mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
fc41826da9
This patch softly updates the spelling of actors from `actor class` to
`actor`. We still accept using `actor` as a modifying attribute of
class, but emit a warning and fix-it to make the change.
One of the challenges that makes this messier is that the modifier list
can be in any order. e.g, `public actor class Foo {}` is the same as
`actor public class Foo {}`.
Classes have been updated to include whether they were explicitly
declared as an actor. This change updates the swiftmodule serialization
version number to 0.591. The additional bit only gets set of the class
declaration was declared as an actor, not if the actor was applied as an
attribute. This allows us to correctly emit `actor class` vs `actor`
emitting the code back out.
8222 lines
274 KiB
C++
8222 lines
274 KiB
C++
//===--- Decl.cpp - Swift Language Decl ASTs ------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Decl class and subclasses.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/AST/Decl.h"
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#include "swift/AST/AccessRequests.h"
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#include "swift/AST/AccessScope.h"
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#include "swift/AST/ASTContext.h"
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#include "swift/AST/ASTWalker.h"
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#include "swift/AST/ASTMangler.h"
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#include "swift/AST/DiagnosticEngine.h"
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#include "swift/AST/DiagnosticsSema.h"
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#include "swift/AST/ExistentialLayout.h"
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#include "swift/AST/Expr.h"
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#include "swift/AST/ForeignAsyncConvention.h"
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#include "swift/AST/ForeignErrorConvention.h"
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#include "swift/AST/GenericEnvironment.h"
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#include "swift/AST/GenericSignature.h"
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#include "swift/AST/Initializer.h"
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#include "swift/AST/LazyResolver.h"
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#include "swift/AST/ASTMangler.h"
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#include "swift/AST/Module.h"
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#include "swift/AST/NameLookup.h"
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#include "swift/AST/NameLookupRequests.h"
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#include "swift/AST/ParameterList.h"
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#include "swift/AST/ParseRequests.h"
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#include "swift/AST/Pattern.h"
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#include "swift/AST/PropertyWrappers.h"
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#include "swift/AST/ProtocolConformance.h"
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#include "swift/AST/ResilienceExpansion.h"
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#include "swift/AST/SourceFile.h"
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#include "swift/AST/Stmt.h"
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#include "swift/AST/TypeCheckRequests.h"
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#include "swift/AST/TypeLoc.h"
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#include "swift/AST/SwiftNameTranslation.h"
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#include "swift/Basic/Defer.h"
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#include "swift/Parse/Lexer.h" // FIXME: Bad dependency
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#include "clang/Lex/MacroInfo.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallSet.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/raw_ostream.h"
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#include "swift/Basic/Range.h"
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#include "swift/Basic/StringExtras.h"
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#include "swift/Basic/Statistic.h"
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#include "swift/Basic/TypeID.h"
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#include "swift/Demangling/ManglingMacros.h"
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#include "clang/Basic/CharInfo.h"
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#include "clang/Basic/Module.h"
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#include "clang/AST/Attr.h"
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#include "clang/AST/DeclObjC.h"
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#include "InlinableText.h"
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#include <algorithm>
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using namespace swift;
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#define DEBUG_TYPE "Serialization"
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STATISTIC(NumLazyRequirementSignatures,
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"# of lazily-deserialized requirement signatures known");
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#undef DEBUG_TYPE
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#define DECL(Id, _) \
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static_assert((DeclKind::Id == DeclKind::Module) ^ \
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IsTriviallyDestructible<Id##Decl>::value, \
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"Decls are BumpPtrAllocated; the destructor is never called");
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#include "swift/AST/DeclNodes.def"
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static_assert(IsTriviallyDestructible<ParameterList>::value,
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"ParameterLists are BumpPtrAllocated; the d'tor is never called");
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static_assert(IsTriviallyDestructible<GenericParamList>::value,
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"GenericParamLists are BumpPtrAllocated; the d'tor isn't called");
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const clang::MacroInfo *ClangNode::getAsMacro() const {
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if (auto MM = getAsModuleMacro())
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return MM->getMacroInfo();
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return getAsMacroInfo();
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}
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clang::SourceLocation ClangNode::getLocation() const {
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if (auto D = getAsDecl())
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return D->getLocation();
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if (auto M = getAsMacro())
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return M->getDefinitionLoc();
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return clang::SourceLocation();
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}
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clang::SourceRange ClangNode::getSourceRange() const {
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if (auto D = getAsDecl())
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return D->getSourceRange();
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if (auto M = getAsMacro())
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return clang::SourceRange(M->getDefinitionLoc(), M->getDefinitionEndLoc());
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return clang::SourceLocation();
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}
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const clang::Module *ClangNode::getClangModule() const {
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if (auto *M = getAsModule())
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return M;
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if (auto *ID = dyn_cast_or_null<clang::ImportDecl>(getAsDecl()))
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return ID->getImportedModule();
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return nullptr;
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}
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void ClangNode::dump() const {
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#if SWIFT_BUILD_ONLY_SYNTAXPARSERLIB
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return; // not needed for the parser library.
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#endif
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if (auto D = getAsDecl())
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D->dump();
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else if (auto M = getAsMacro())
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M->dump();
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else if (auto M = getAsModule())
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M->dump();
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else
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llvm::errs() << "ClangNode contains nullptr\n";
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}
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// Only allow allocation of Decls using the allocator in ASTContext.
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void *Decl::operator new(size_t Bytes, const ASTContext &C,
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unsigned Alignment) {
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return C.Allocate(Bytes, Alignment);
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}
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// Only allow allocation of Modules using the allocator in ASTContext.
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void *ModuleDecl::operator new(size_t Bytes, const ASTContext &C,
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unsigned Alignment) {
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return C.Allocate(Bytes, Alignment);
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}
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StringRef Decl::getKindName(DeclKind K) {
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switch (K) {
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#define DECL(Id, Parent) case DeclKind::Id: return #Id;
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#include "swift/AST/DeclNodes.def"
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}
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llvm_unreachable("bad DeclKind");
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}
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DescriptiveDeclKind Decl::getDescriptiveKind() const {
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#define TRIVIAL_KIND(Kind) \
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case DeclKind::Kind: \
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return DescriptiveDeclKind::Kind
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switch (getKind()) {
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TRIVIAL_KIND(Import);
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TRIVIAL_KIND(Extension);
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TRIVIAL_KIND(EnumCase);
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TRIVIAL_KIND(TopLevelCode);
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TRIVIAL_KIND(IfConfig);
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TRIVIAL_KIND(PoundDiagnostic);
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TRIVIAL_KIND(PatternBinding);
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TRIVIAL_KIND(PrecedenceGroup);
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TRIVIAL_KIND(InfixOperator);
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TRIVIAL_KIND(PrefixOperator);
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TRIVIAL_KIND(PostfixOperator);
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TRIVIAL_KIND(TypeAlias);
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TRIVIAL_KIND(GenericTypeParam);
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TRIVIAL_KIND(AssociatedType);
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TRIVIAL_KIND(Protocol);
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TRIVIAL_KIND(Constructor);
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TRIVIAL_KIND(Destructor);
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TRIVIAL_KIND(EnumElement);
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TRIVIAL_KIND(Param);
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TRIVIAL_KIND(Module);
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TRIVIAL_KIND(MissingMember);
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case DeclKind::Enum:
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return cast<EnumDecl>(this)->getGenericParams()
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? DescriptiveDeclKind::GenericEnum
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: DescriptiveDeclKind::Enum;
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case DeclKind::Struct:
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return cast<StructDecl>(this)->getGenericParams()
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? DescriptiveDeclKind::GenericStruct
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: DescriptiveDeclKind::Struct;
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case DeclKind::Class:
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return cast<ClassDecl>(this)->getGenericParams()
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? DescriptiveDeclKind::GenericClass
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: DescriptiveDeclKind::Class;
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case DeclKind::Var: {
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auto var = cast<VarDecl>(this);
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switch (var->getCorrectStaticSpelling()) {
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case StaticSpellingKind::None:
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if (var->getDeclContext()->isTypeContext())
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return DescriptiveDeclKind::Property;
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return var->isLet() ? DescriptiveDeclKind::Let
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: DescriptiveDeclKind::Var;
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case StaticSpellingKind::KeywordStatic:
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return DescriptiveDeclKind::StaticProperty;
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case StaticSpellingKind::KeywordClass:
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return DescriptiveDeclKind::ClassProperty;
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}
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}
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case DeclKind::Subscript: {
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auto subscript = cast<SubscriptDecl>(this);
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switch (subscript->getCorrectStaticSpelling()) {
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case StaticSpellingKind::None:
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return DescriptiveDeclKind::Subscript;
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case StaticSpellingKind::KeywordStatic:
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return DescriptiveDeclKind::StaticSubscript;
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case StaticSpellingKind::KeywordClass:
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return DescriptiveDeclKind::ClassSubscript;
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}
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}
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case DeclKind::Accessor: {
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auto accessor = cast<AccessorDecl>(this);
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switch (accessor->getAccessorKind()) {
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case AccessorKind::Get:
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return DescriptiveDeclKind::Getter;
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case AccessorKind::Set:
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return DescriptiveDeclKind::Setter;
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case AccessorKind::WillSet:
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return DescriptiveDeclKind::WillSet;
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case AccessorKind::DidSet:
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return DescriptiveDeclKind::DidSet;
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case AccessorKind::Address:
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return DescriptiveDeclKind::Addressor;
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case AccessorKind::MutableAddress:
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return DescriptiveDeclKind::MutableAddressor;
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case AccessorKind::Read:
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return DescriptiveDeclKind::ReadAccessor;
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case AccessorKind::Modify:
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return DescriptiveDeclKind::ModifyAccessor;
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}
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llvm_unreachable("bad accessor kind");
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}
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case DeclKind::Func: {
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auto func = cast<FuncDecl>(this);
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if (func->isOperator())
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return DescriptiveDeclKind::OperatorFunction;
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if (func->getDeclContext()->isLocalContext())
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return DescriptiveDeclKind::LocalFunction;
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if (func->getDeclContext()->isModuleScopeContext())
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return DescriptiveDeclKind::GlobalFunction;
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// We have a method.
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switch (func->getCorrectStaticSpelling()) {
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case StaticSpellingKind::None:
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return DescriptiveDeclKind::Method;
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case StaticSpellingKind::KeywordStatic:
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return DescriptiveDeclKind::StaticMethod;
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case StaticSpellingKind::KeywordClass:
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return DescriptiveDeclKind::ClassMethod;
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}
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}
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case DeclKind::OpaqueType: {
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auto *opaqueTypeDecl = cast<OpaqueTypeDecl>(this);
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if (dyn_cast_or_null<VarDecl>(opaqueTypeDecl->getNamingDecl()))
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return DescriptiveDeclKind::OpaqueVarType;
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return DescriptiveDeclKind::OpaqueResultType;
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}
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}
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#undef TRIVIAL_KIND
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llvm_unreachable("bad DescriptiveDeclKind");
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}
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StringRef Decl::getDescriptiveKindName(DescriptiveDeclKind K) {
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#define ENTRY(Kind, String) case DescriptiveDeclKind::Kind: return String
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switch (K) {
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ENTRY(Import, "import");
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ENTRY(Extension, "extension");
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ENTRY(EnumCase, "case");
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ENTRY(TopLevelCode, "top-level code");
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ENTRY(IfConfig, "conditional block");
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ENTRY(PoundDiagnostic, "diagnostic");
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ENTRY(PatternBinding, "pattern binding");
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ENTRY(Var, "var");
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ENTRY(Param, "parameter");
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ENTRY(Let, "let");
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ENTRY(Property, "property");
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ENTRY(StaticProperty, "static property");
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ENTRY(ClassProperty, "class property");
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ENTRY(PrecedenceGroup, "precedence group");
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ENTRY(InfixOperator, "infix operator");
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ENTRY(PrefixOperator, "prefix operator");
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ENTRY(PostfixOperator, "postfix operator");
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ENTRY(TypeAlias, "type alias");
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ENTRY(GenericTypeParam, "generic parameter");
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ENTRY(AssociatedType, "associated type");
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ENTRY(Type, "type");
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ENTRY(Enum, "enum");
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ENTRY(Struct, "struct");
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ENTRY(Class, "class");
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ENTRY(Protocol, "protocol");
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ENTRY(GenericEnum, "generic enum");
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ENTRY(GenericStruct, "generic struct");
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ENTRY(GenericClass, "generic class");
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ENTRY(GenericType, "generic type");
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ENTRY(Subscript, "subscript");
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ENTRY(StaticSubscript, "static subscript");
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ENTRY(ClassSubscript, "class subscript");
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ENTRY(Constructor, "initializer");
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ENTRY(Destructor, "deinitializer");
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ENTRY(LocalFunction, "local function");
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ENTRY(GlobalFunction, "global function");
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ENTRY(OperatorFunction, "operator function");
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ENTRY(Method, "instance method");
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ENTRY(StaticMethod, "static method");
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ENTRY(ClassMethod, "class method");
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ENTRY(Getter, "getter");
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ENTRY(Setter, "setter");
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ENTRY(WillSet, "willSet observer");
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ENTRY(DidSet, "didSet observer");
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ENTRY(Addressor, "address accessor");
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ENTRY(MutableAddressor, "mutableAddress accessor");
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ENTRY(ReadAccessor, "_read accessor");
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ENTRY(ModifyAccessor, "_modify accessor");
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ENTRY(EnumElement, "enum case");
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ENTRY(Module, "module");
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ENTRY(MissingMember, "missing member placeholder");
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ENTRY(Requirement, "requirement");
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ENTRY(OpaqueResultType, "result");
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ENTRY(OpaqueVarType, "type");
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}
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#undef ENTRY
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llvm_unreachable("bad DescriptiveDeclKind");
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}
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Optional<llvm::VersionTuple>
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Decl::getIntroducedOSVersion(PlatformKind Kind) const {
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for (auto *attr: getAttrs()) {
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if (auto *ava = dyn_cast<AvailableAttr>(attr)) {
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if (ava->Platform == Kind && ava->Introduced) {
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return ava->Introduced;
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}
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}
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}
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return None;
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}
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llvm::raw_ostream &swift::operator<<(llvm::raw_ostream &OS,
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StaticSpellingKind SSK) {
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switch (SSK) {
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case StaticSpellingKind::None:
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return OS << "<none>";
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case StaticSpellingKind::KeywordStatic:
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return OS << "'static'";
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case StaticSpellingKind::KeywordClass:
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return OS << "'class'";
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}
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llvm_unreachable("bad StaticSpellingKind");
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}
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llvm::raw_ostream &swift::operator<<(llvm::raw_ostream &OS,
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ReferenceOwnership RO) {
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if (RO == ReferenceOwnership::Strong)
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return OS << "'strong'";
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return OS << "'" << keywordOf(RO) << "'";
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}
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llvm::raw_ostream &swift::operator<<(llvm::raw_ostream &OS,
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SelfAccessKind SAK) {
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switch (SAK) {
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case SelfAccessKind::NonMutating: return OS << "'nonmutating'";
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case SelfAccessKind::Mutating: return OS << "'mutating'";
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case SelfAccessKind::Consuming: return OS << "'__consuming'";
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}
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llvm_unreachable("Unknown SelfAccessKind");
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}
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DeclContext *Decl::getInnermostDeclContext() const {
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if (auto func = dyn_cast<AbstractFunctionDecl>(this))
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return const_cast<AbstractFunctionDecl*>(func);
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if (auto subscript = dyn_cast<SubscriptDecl>(this))
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return const_cast<SubscriptDecl*>(subscript);
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if (auto type = dyn_cast<GenericTypeDecl>(this))
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return const_cast<GenericTypeDecl*>(type);
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if (auto ext = dyn_cast<ExtensionDecl>(this))
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return const_cast<ExtensionDecl*>(ext);
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if (auto topLevel = dyn_cast<TopLevelCodeDecl>(this))
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return const_cast<TopLevelCodeDecl*>(topLevel);
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|
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return getDeclContext();
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}
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bool Decl::isInvalid() const {
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switch (getKind()) {
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#define VALUE_DECL(ID, PARENT)
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#define DECL(ID, PARENT) \
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case DeclKind::ID:
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#include "swift/AST/DeclNodes.def"
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return Bits.Decl.Invalid;
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case DeclKind::Param: {
|
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// Parameters are special because closure parameters may not have type
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// annotations. In which case, the interface type request returns
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// ErrorType. Therefore, consider parameters with implicit types to always
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// be valid.
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auto *PD = cast<ParamDecl>(this);
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if (!PD->getTypeRepr() && !PD->hasInterfaceType())
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return false;
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}
|
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LLVM_FALLTHROUGH;
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case DeclKind::Enum:
|
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case DeclKind::Struct:
|
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case DeclKind::Class:
|
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case DeclKind::Protocol:
|
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case DeclKind::OpaqueType:
|
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case DeclKind::TypeAlias:
|
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case DeclKind::GenericTypeParam:
|
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case DeclKind::AssociatedType:
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case DeclKind::Module:
|
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case DeclKind::Var:
|
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case DeclKind::Subscript:
|
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case DeclKind::Constructor:
|
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case DeclKind::Destructor:
|
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case DeclKind::Func:
|
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case DeclKind::EnumElement:
|
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return cast<ValueDecl>(this)->getInterfaceType()->hasError();
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|
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case DeclKind::Accessor: {
|
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auto *AD = cast<AccessorDecl>(this);
|
|
if (AD->hasInterfaceType() && AD->getInterfaceType()->hasError())
|
|
return true;
|
|
return AD->getStorage()->isInvalid();
|
|
}
|
|
}
|
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|
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llvm_unreachable("Unknown decl kind");
|
|
}
|
|
|
|
void Decl::setInvalid() {
|
|
switch (getKind()) {
|
|
#define VALUE_DECL(ID, PARENT)
|
|
#define DECL(ID, PARENT) \
|
|
case DeclKind::ID:
|
|
#include "swift/AST/DeclNodes.def"
|
|
Bits.Decl.Invalid = true;
|
|
return;
|
|
case DeclKind::Enum:
|
|
case DeclKind::Struct:
|
|
case DeclKind::Class:
|
|
case DeclKind::Protocol:
|
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case DeclKind::OpaqueType:
|
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case DeclKind::TypeAlias:
|
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case DeclKind::GenericTypeParam:
|
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case DeclKind::AssociatedType:
|
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case DeclKind::Module:
|
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case DeclKind::Var:
|
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case DeclKind::Param:
|
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case DeclKind::Subscript:
|
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case DeclKind::Constructor:
|
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case DeclKind::Destructor:
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case DeclKind::Func:
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case DeclKind::Accessor:
|
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case DeclKind::EnumElement:
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cast<ValueDecl>(this)->setInterfaceType(ErrorType::get(getASTContext()));
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|
return;
|
|
}
|
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|
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llvm_unreachable("Unknown decl kind");
|
|
}
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|
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void Decl::setDeclContext(DeclContext *DC) {
|
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Context = DC;
|
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}
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|
|
bool Decl::isUserAccessible() const {
|
|
if (auto VD = dyn_cast<ValueDecl>(this)) {
|
|
return VD->isUserAccessible();
|
|
}
|
|
return true;
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|
}
|
|
|
|
bool Decl::canHaveComment() const {
|
|
return !this->hasClangNode() &&
|
|
(isa<ValueDecl>(this) || isa<ExtensionDecl>(this)) &&
|
|
!isa<ParamDecl>(this) &&
|
|
(!isa<AbstractTypeParamDecl>(this) || isa<AssociatedTypeDecl>(this));
|
|
}
|
|
|
|
ModuleDecl *Decl::getModuleContext() const {
|
|
return getDeclContext()->getParentModule();
|
|
}
|
|
|
|
/// Retrieve the diagnostic engine for diagnostics emission.
|
|
DiagnosticEngine &Decl::getDiags() const {
|
|
return getASTContext().Diags;
|
|
}
|
|
|
|
// Helper functions to verify statically whether source-location
|
|
// functions have been overridden.
|
|
typedef const char (&TwoChars)[2];
|
|
template<typename Class>
|
|
inline char checkSourceLocType(SourceLoc (Class::*)() const);
|
|
inline TwoChars checkSourceLocType(SourceLoc (Decl::*)() const);
|
|
|
|
template<typename Class>
|
|
inline char checkSourceLocType(SourceLoc (Class::*)(bool) const);
|
|
inline TwoChars checkSourceLocType(SourceLoc (Decl::*)(bool) const);
|
|
|
|
template<typename Class>
|
|
inline char checkSourceRangeType(SourceRange (Class::*)() const);
|
|
inline TwoChars checkSourceRangeType(SourceRange (Decl::*)() const);
|
|
|
|
SourceRange Decl::getSourceRange() const {
|
|
switch (getKind()) {
|
|
#define DECL(ID, PARENT) \
|
|
static_assert(sizeof(checkSourceRangeType(&ID##Decl::getSourceRange)) == 1, \
|
|
#ID "Decl is missing getSourceRange()"); \
|
|
case DeclKind::ID: return cast<ID##Decl>(this)->getSourceRange();
|
|
#include "swift/AST/DeclNodes.def"
|
|
}
|
|
|
|
llvm_unreachable("Unknown decl kind");
|
|
}
|
|
|
|
SourceRange Decl::getSourceRangeIncludingAttrs() const {
|
|
auto Range = getSourceRange();
|
|
|
|
// Attributes on AccessorDecl may syntactically belong to PatternBindingDecl.
|
|
// e.g. 'override'.
|
|
if (auto *AD = dyn_cast<AccessorDecl>(this)) {
|
|
// If this is implicit getter, accessor range should not include attributes.
|
|
if (AD->isImplicitGetter())
|
|
return Range;
|
|
|
|
// Otherwise, include attributes directly attached to the accessor.
|
|
SourceLoc VarLoc = AD->getStorage()->getStartLoc();
|
|
for (auto Attr : getAttrs()) {
|
|
if (!Attr->getRange().isValid())
|
|
continue;
|
|
|
|
SourceLoc AttrStartLoc = Attr->getRangeWithAt().Start;
|
|
if (getASTContext().SourceMgr.isBeforeInBuffer(VarLoc, AttrStartLoc))
|
|
Range.widen(AttrStartLoc);
|
|
}
|
|
return Range;
|
|
}
|
|
|
|
// Attributes on VarDecl syntactically belong to PatternBindingDecl.
|
|
if (isa<VarDecl>(this) && !isa<ParamDecl>(this))
|
|
return Range;
|
|
|
|
// Attributes on PatternBindingDecls are attached to VarDecls in AST.
|
|
if (auto *PBD = dyn_cast<PatternBindingDecl>(this)) {
|
|
for (auto i : range(PBD->getNumPatternEntries()))
|
|
PBD->getPattern(i)->forEachVariable([&](VarDecl *VD) {
|
|
for (auto Attr : VD->getAttrs())
|
|
if (Attr->getRange().isValid())
|
|
Range.widen(Attr->getRangeWithAt());
|
|
});
|
|
}
|
|
|
|
for (auto Attr : getAttrs()) {
|
|
if (Attr->getRange().isValid())
|
|
Range.widen(Attr->getRangeWithAt());
|
|
}
|
|
return Range;
|
|
}
|
|
|
|
SourceLoc Decl::getLocFromSource() const {
|
|
switch (getKind()) {
|
|
#define DECL(ID, X) \
|
|
static_assert(sizeof(checkSourceLocType(&ID##Decl::getLocFromSource)) == 1, \
|
|
#ID "Decl is missing getLocFromSource()"); \
|
|
case DeclKind::ID: return cast<ID##Decl>(this)->getLocFromSource();
|
|
#include "swift/AST/DeclNodes.def"
|
|
}
|
|
|
|
llvm_unreachable("Unknown decl kind");
|
|
}
|
|
|
|
const Decl::CachedExternalSourceLocs *Decl::getSerializedLocs() const {
|
|
if (CachedSerializedLocs) {
|
|
return CachedSerializedLocs;
|
|
}
|
|
auto *File = cast<FileUnit>(getDeclContext()->getModuleScopeContext());
|
|
auto Locs = File->getBasicLocsForDecl(this);
|
|
if (!Locs.hasValue()) {
|
|
static const Decl::CachedExternalSourceLocs NullLocs{};
|
|
return &NullLocs;
|
|
}
|
|
auto *Result = getASTContext().Allocate<Decl::CachedExternalSourceLocs>();
|
|
auto &SM = getASTContext().SourceMgr;
|
|
#define CASE(X) \
|
|
Result->X = SM.getLocFromExternalSource(Locs->SourceFilePath, Locs->X.Line, \
|
|
Locs->X.Column);
|
|
CASE(Loc)
|
|
CASE(StartLoc)
|
|
CASE(EndLoc)
|
|
#undef CASE
|
|
|
|
for (const auto &LineColumnAndLength : Locs->DocRanges) {
|
|
auto Start = SM.getLocFromExternalSource(Locs->SourceFilePath,
|
|
LineColumnAndLength.first.Line,
|
|
LineColumnAndLength.first.Column);
|
|
Result->DocRanges.push_back({ Start, LineColumnAndLength.second });
|
|
}
|
|
|
|
return Result;
|
|
}
|
|
|
|
StringRef Decl::getAlternateModuleName() const {
|
|
for (auto *Att: Attrs) {
|
|
if (auto *OD = dyn_cast<OriginallyDefinedInAttr>(Att)) {
|
|
if (OD->isActivePlatform(getASTContext())) {
|
|
return OD->OriginalModuleName;
|
|
}
|
|
}
|
|
}
|
|
for (auto *DC = getDeclContext(); DC; DC = DC->getParent()) {
|
|
if (auto decl = DC->getAsDecl()) {
|
|
if (decl == this)
|
|
continue;
|
|
auto AM = decl->getAlternateModuleName();
|
|
if (!AM.empty())
|
|
return AM;
|
|
}
|
|
}
|
|
return StringRef();
|
|
}
|
|
|
|
SourceLoc Decl::getLoc(bool SerializedOK) const {
|
|
#define DECL(ID, X) \
|
|
static_assert(sizeof(checkSourceLocType(&ID##Decl::getLoc)) == 2, \
|
|
#ID "Decl is re-defining getLoc()");
|
|
#include "swift/AST/DeclNodes.def"
|
|
if (isa<ModuleDecl>(this))
|
|
return SourceLoc();
|
|
// When the decl is context-free, we should get loc from source buffer.
|
|
if (!getDeclContext())
|
|
return getLocFromSource();
|
|
FileUnit *File = dyn_cast<FileUnit>(getDeclContext()->getModuleScopeContext());
|
|
if (!File)
|
|
return getLocFromSource();
|
|
switch(File->getKind()) {
|
|
case FileUnitKind::Source:
|
|
return getLocFromSource();
|
|
case FileUnitKind::SerializedAST: {
|
|
if (!SerializedOK)
|
|
return SourceLoc();
|
|
return getSerializedLocs()->Loc;
|
|
}
|
|
case FileUnitKind::Builtin:
|
|
case FileUnitKind::Synthesized:
|
|
case FileUnitKind::ClangModule:
|
|
case FileUnitKind::DWARFModule:
|
|
return SourceLoc();
|
|
}
|
|
llvm_unreachable("invalid file kind");
|
|
}
|
|
|
|
Optional<CustomAttrNominalPair> Decl::getGlobalActorAttr() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<Decl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
GlobalActorAttributeRequest{mutableThis},
|
|
None);
|
|
}
|
|
|
|
Expr *AbstractFunctionDecl::getSingleExpressionBody() const {
|
|
assert(hasSingleExpressionBody() && "Not a single-expression body");
|
|
auto braceStmt = getBody();
|
|
assert(braceStmt != nullptr && "No body currently available.");
|
|
auto body = getBody()->getLastElement();
|
|
if (auto *stmt = body.dyn_cast<Stmt *>()) {
|
|
if (auto *returnStmt = dyn_cast<ReturnStmt>(stmt)) {
|
|
return returnStmt->getResult();
|
|
} else if (isa<FailStmt>(stmt)) {
|
|
// We can only get to this point if we're a type-checked ConstructorDecl
|
|
// which was originally spelled init?(...) { nil }.
|
|
//
|
|
// There no longer is a single-expression to return, so ignore null.
|
|
return nullptr;
|
|
}
|
|
}
|
|
return body.get<Expr *>();
|
|
}
|
|
|
|
void AbstractFunctionDecl::setSingleExpressionBody(Expr *NewBody) {
|
|
assert(hasSingleExpressionBody() && "Not a single-expression body");
|
|
auto body = getBody()->getLastElement();
|
|
if (auto *stmt = body.dyn_cast<Stmt *>()) {
|
|
if (auto *returnStmt = dyn_cast<ReturnStmt>(stmt)) {
|
|
returnStmt->setResult(NewBody);
|
|
return;
|
|
} else if (isa<FailStmt>(stmt)) {
|
|
// We can only get to this point if we're a type-checked ConstructorDecl
|
|
// which was originally spelled init?(...) { nil }.
|
|
//
|
|
// We can no longer write the single-expression which is being set on us
|
|
// into anything because a FailStmt does not have such a child. As a
|
|
// result we need to demand that the NewBody is null.
|
|
assert(NewBody == nullptr);
|
|
return;
|
|
}
|
|
}
|
|
getBody()->setLastElement(NewBody);
|
|
}
|
|
|
|
bool AbstractStorageDecl::isTransparent() const {
|
|
return getAttrs().hasAttribute<TransparentAttr>();
|
|
}
|
|
|
|
bool AbstractFunctionDecl::isTransparent() const {
|
|
// Check if the declaration had the attribute.
|
|
if (getAttrs().hasAttribute<TransparentAttr>())
|
|
return true;
|
|
|
|
// If this is an accessor, the computation is a bit more involved, so we
|
|
// kick off a request.
|
|
if (const auto *AD = dyn_cast<AccessorDecl>(this)) {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
IsAccessorTransparentRequest{const_cast<AccessorDecl *>(AD)},
|
|
false);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ParameterList::hasInternalParameter(StringRef Prefix) const {
|
|
for (auto param : *this) {
|
|
if (param->hasName() && param->getNameStr().startswith(Prefix))
|
|
return true;
|
|
auto argName = param->getArgumentName();
|
|
if (!argName.empty() && argName.str().startswith(Prefix))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool Decl::hasUnderscoredNaming() const {
|
|
const Decl *D = this;
|
|
|
|
// If it's a function or subscript with a parameter with leading
|
|
// underscore, it's a private function or subscript.
|
|
if (isa<AbstractFunctionDecl>(D) || isa<SubscriptDecl>(D)) {
|
|
const auto VD = cast<ValueDecl>(D);
|
|
if (getParameterList(const_cast<ValueDecl *>(VD))
|
|
->hasInternalParameter("_")) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (const auto PD = dyn_cast<ProtocolDecl>(D)) {
|
|
StringRef NameStr = PD->getNameStr();
|
|
if (NameStr.startswith("_Builtin")) {
|
|
return true;
|
|
}
|
|
if (NameStr.startswith("_ExpressibleBy")) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (const auto ImportD = dyn_cast<ImportDecl>(D)) {
|
|
if (const auto *Mod = ImportD->getModule()) {
|
|
if (Mod->isSwiftShimsModule()) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
const auto VD = dyn_cast<ValueDecl>(D);
|
|
if (!VD || !VD->hasName()) {
|
|
return false;
|
|
}
|
|
|
|
if (!VD->getBaseName().isSpecial() &&
|
|
VD->getBaseIdentifier().str().startswith("_")) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Decl::isPrivateStdlibDecl(bool treatNonBuiltinProtocolsAsPublic) const {
|
|
const Decl *D = this;
|
|
if (auto ExtD = dyn_cast<ExtensionDecl>(D)) {
|
|
Type extTy = ExtD->getExtendedType();
|
|
return extTy.isPrivateStdlibType(treatNonBuiltinProtocolsAsPublic);
|
|
}
|
|
|
|
DeclContext *DC = D->getDeclContext()->getModuleScopeContext();
|
|
if (DC->getParentModule()->isBuiltinModule() ||
|
|
DC->getParentModule()->isSwiftShimsModule())
|
|
return true;
|
|
if (!DC->getParentModule()->isSystemModule())
|
|
return false;
|
|
auto FU = dyn_cast<FileUnit>(DC);
|
|
if (!FU)
|
|
return false;
|
|
// Check for Swift module and overlays.
|
|
if (!DC->getParentModule()->isStdlibModule() &&
|
|
FU->getKind() != FileUnitKind::SerializedAST)
|
|
return false;
|
|
|
|
if (isa<ProtocolDecl>(D)) {
|
|
if (treatNonBuiltinProtocolsAsPublic)
|
|
return false;
|
|
}
|
|
|
|
if (D->getAttrs().hasAttribute<ShowInInterfaceAttr>()) {
|
|
return false;
|
|
}
|
|
|
|
return hasUnderscoredNaming();
|
|
}
|
|
|
|
bool Decl::isStdlibDecl() const {
|
|
DeclContext *DC = getDeclContext();
|
|
return DC->isModuleScopeContext() &&
|
|
DC->getParentModule()->isStdlibModule();
|
|
}
|
|
|
|
AvailabilityContext Decl::getAvailabilityForLinkage() const {
|
|
auto containingContext =
|
|
AvailabilityInference::annotatedAvailableRange(this, getASTContext());
|
|
if (containingContext.hasValue())
|
|
return *containingContext;
|
|
|
|
if (auto *accessor = dyn_cast<AccessorDecl>(this))
|
|
return accessor->getStorage()->getAvailabilityForLinkage();
|
|
|
|
if (auto *ext = dyn_cast<ExtensionDecl>(this))
|
|
if (auto *nominal = ext->getExtendedNominal())
|
|
return nominal->getAvailabilityForLinkage();
|
|
|
|
auto *dc = getDeclContext();
|
|
if (auto *ext = dyn_cast<ExtensionDecl>(dc))
|
|
return ext->getAvailabilityForLinkage();
|
|
else if (auto *nominal = dyn_cast<NominalTypeDecl>(dc))
|
|
return nominal->getAvailabilityForLinkage();
|
|
|
|
return AvailabilityContext::alwaysAvailable();
|
|
}
|
|
|
|
bool Decl::isAlwaysWeakImported() const {
|
|
// For a Clang declaration, trust Clang.
|
|
if (auto clangDecl = getClangDecl()) {
|
|
return clangDecl->isWeakImported();
|
|
}
|
|
|
|
if (getAttrs().hasAttribute<WeakLinkedAttr>())
|
|
return true;
|
|
|
|
if (auto *accessor = dyn_cast<AccessorDecl>(this))
|
|
return accessor->getStorage()->isAlwaysWeakImported();
|
|
|
|
if (auto *ext = dyn_cast<ExtensionDecl>(this))
|
|
if (auto *nominal = ext->getExtendedNominal())
|
|
return nominal->isAlwaysWeakImported();
|
|
|
|
auto *dc = getDeclContext();
|
|
if (auto *ext = dyn_cast<ExtensionDecl>(dc))
|
|
return ext->isAlwaysWeakImported();
|
|
if (auto *nominal = dyn_cast<NominalTypeDecl>(dc))
|
|
return nominal->isAlwaysWeakImported();
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Decl::isWeakImported(ModuleDecl *fromModule) const {
|
|
if (fromModule == nullptr) {
|
|
return (isAlwaysWeakImported() ||
|
|
!getAvailabilityForLinkage().isAlwaysAvailable());
|
|
}
|
|
|
|
if (getModuleContext() == fromModule)
|
|
return false;
|
|
|
|
if (isAlwaysWeakImported())
|
|
return true;
|
|
|
|
auto containingContext = getAvailabilityForLinkage();
|
|
if (containingContext.isAlwaysAvailable())
|
|
return false;
|
|
|
|
auto fromContext = AvailabilityContext::forDeploymentTarget(
|
|
fromModule->getASTContext());
|
|
return !fromContext.isContainedIn(containingContext);
|
|
}
|
|
|
|
GenericContext::GenericContext(DeclContextKind Kind, DeclContext *Parent,
|
|
GenericParamList *Params)
|
|
: _GenericContext(), DeclContext(Kind, Parent) {
|
|
if (Params) {
|
|
Params->setDeclContext(this);
|
|
GenericParamsAndBit.setPointerAndInt(Params, false);
|
|
}
|
|
}
|
|
|
|
TypeArrayView<GenericTypeParamType>
|
|
GenericContext::getInnermostGenericParamTypes() const {
|
|
if (auto sig = getGenericSignature())
|
|
return sig->getInnermostGenericParams();
|
|
else
|
|
return { };
|
|
}
|
|
|
|
/// Retrieve the generic requirements.
|
|
ArrayRef<Requirement> GenericContext::getGenericRequirements() const {
|
|
if (auto sig = getGenericSignature())
|
|
return sig->getRequirements();
|
|
else
|
|
return { };
|
|
}
|
|
|
|
GenericParamList *GenericContext::getGenericParams() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
GenericParamListRequest{
|
|
const_cast<GenericContext *>(this)}, nullptr);
|
|
}
|
|
|
|
GenericParamList *GenericContext::getParsedGenericParams() const {
|
|
if (GenericParamsAndBit.getInt())
|
|
return nullptr;
|
|
return GenericParamsAndBit.getPointer();
|
|
}
|
|
|
|
bool GenericContext::hasComputedGenericSignature() const {
|
|
return GenericSigAndBit.getInt();
|
|
}
|
|
|
|
bool GenericContext::isComputingGenericSignature() const {
|
|
return getASTContext().evaluator.hasActiveRequest(
|
|
GenericSignatureRequest{const_cast<GenericContext*>(this)});
|
|
}
|
|
|
|
GenericSignature GenericContext::getGenericSignature() const {
|
|
return evaluateOrDefault(
|
|
getASTContext().evaluator,
|
|
GenericSignatureRequest{const_cast<GenericContext *>(this)}, nullptr);
|
|
}
|
|
|
|
GenericEnvironment *GenericContext::getGenericEnvironment() const {
|
|
if (auto genericSig = getGenericSignature())
|
|
return genericSig->getGenericEnvironment();
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void GenericContext::setGenericSignature(GenericSignature genericSig) {
|
|
assert(!GenericSigAndBit.getPointer() && "Generic signature cannot be changed");
|
|
getASTContext().evaluator.cacheOutput(GenericSignatureRequest{this},
|
|
std::move(genericSig));
|
|
}
|
|
|
|
SourceRange GenericContext::getGenericTrailingWhereClauseSourceRange() const {
|
|
if (const auto *where = getTrailingWhereClause())
|
|
return where->getSourceRange();
|
|
|
|
return SourceRange();
|
|
}
|
|
|
|
ImportDecl *ImportDecl::create(ASTContext &Ctx, DeclContext *DC,
|
|
SourceLoc ImportLoc, ImportKind Kind,
|
|
SourceLoc KindLoc,
|
|
ImportPath Path,
|
|
ClangNode ClangN) {
|
|
assert(!Path.empty());
|
|
assert(Kind == ImportKind::Module || Path.size() > 1);
|
|
assert(ClangN.isNull() || ClangN.getAsModule() ||
|
|
isa<clang::ImportDecl>(ClangN.getAsDecl()));
|
|
size_t Size = totalSizeToAlloc<ImportPath::Element>(Path.size());
|
|
void *ptr = allocateMemoryForDecl<ImportDecl>(Ctx, Size, !ClangN.isNull());
|
|
auto D = new (ptr) ImportDecl(DC, ImportLoc, Kind, KindLoc, Path);
|
|
if (ClangN)
|
|
D->setClangNode(ClangN);
|
|
return D;
|
|
}
|
|
|
|
ImportDecl::ImportDecl(DeclContext *DC, SourceLoc ImportLoc, ImportKind K,
|
|
SourceLoc KindLoc, ImportPath Path)
|
|
: Decl(DeclKind::Import, DC), ImportLoc(ImportLoc), KindLoc(KindLoc) {
|
|
Bits.ImportDecl.NumPathElements = Path.size();
|
|
assert(Bits.ImportDecl.NumPathElements == Path.size() && "Truncation error");
|
|
Bits.ImportDecl.ImportKind = static_cast<unsigned>(K);
|
|
assert(getImportKind() == K && "not enough bits for ImportKind");
|
|
std::uninitialized_copy(Path.begin(), Path.end(),
|
|
getTrailingObjects<ImportPath::Element>());
|
|
}
|
|
|
|
ImportKind ImportDecl::getBestImportKind(const ValueDecl *VD) {
|
|
switch (VD->getKind()) {
|
|
case DeclKind::Import:
|
|
case DeclKind::Extension:
|
|
case DeclKind::PatternBinding:
|
|
case DeclKind::TopLevelCode:
|
|
case DeclKind::InfixOperator:
|
|
case DeclKind::PrefixOperator:
|
|
case DeclKind::PostfixOperator:
|
|
case DeclKind::EnumCase:
|
|
case DeclKind::IfConfig:
|
|
case DeclKind::PoundDiagnostic:
|
|
case DeclKind::PrecedenceGroup:
|
|
case DeclKind::MissingMember:
|
|
llvm_unreachable("not a ValueDecl");
|
|
|
|
case DeclKind::AssociatedType:
|
|
case DeclKind::Constructor:
|
|
case DeclKind::Destructor:
|
|
case DeclKind::GenericTypeParam:
|
|
case DeclKind::Subscript:
|
|
case DeclKind::EnumElement:
|
|
case DeclKind::Param:
|
|
llvm_unreachable("not a top-level ValueDecl");
|
|
|
|
case DeclKind::Protocol:
|
|
return ImportKind::Protocol;
|
|
|
|
case DeclKind::Class:
|
|
return ImportKind::Class;
|
|
case DeclKind::Enum:
|
|
return ImportKind::Enum;
|
|
case DeclKind::Struct:
|
|
return ImportKind::Struct;
|
|
|
|
case DeclKind::OpaqueType:
|
|
return ImportKind::Type;
|
|
|
|
case DeclKind::TypeAlias: {
|
|
Type type = cast<TypeAliasDecl>(VD)->getDeclaredInterfaceType();
|
|
auto *nominal = type->getAnyNominal();
|
|
if (!nominal)
|
|
return ImportKind::Type;
|
|
return getBestImportKind(nominal);
|
|
}
|
|
|
|
case DeclKind::Accessor:
|
|
case DeclKind::Func:
|
|
return ImportKind::Func;
|
|
|
|
case DeclKind::Var:
|
|
return ImportKind::Var;
|
|
|
|
case DeclKind::Module:
|
|
return ImportKind::Module;
|
|
}
|
|
llvm_unreachable("bad DeclKind");
|
|
}
|
|
|
|
Optional<ImportKind>
|
|
ImportDecl::findBestImportKind(ArrayRef<ValueDecl *> Decls) {
|
|
assert(!Decls.empty());
|
|
ImportKind FirstKind = ImportDecl::getBestImportKind(Decls.front());
|
|
|
|
// FIXME: Only functions can be overloaded.
|
|
if (Decls.size() == 1)
|
|
return FirstKind;
|
|
if (FirstKind != ImportKind::Func)
|
|
return None;
|
|
|
|
for (auto NextDecl : Decls.slice(1)) {
|
|
if (ImportDecl::getBestImportKind(NextDecl) != FirstKind)
|
|
return None;
|
|
}
|
|
|
|
return FirstKind;
|
|
}
|
|
|
|
ArrayRef<ValueDecl *> ImportDecl::getDecls() const {
|
|
// If this isn't a scoped import, there's nothing to do.
|
|
if (getImportKind() == ImportKind::Module)
|
|
return {};
|
|
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<ImportDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
ScopedImportLookupRequest{mutableThis}, {});
|
|
}
|
|
|
|
void NominalTypeDecl::setConformanceLoader(LazyMemberLoader *lazyLoader,
|
|
uint64_t contextData) {
|
|
assert(!Bits.NominalTypeDecl.HasLazyConformances &&
|
|
"Already have lazy conformances");
|
|
Bits.NominalTypeDecl.HasLazyConformances = true;
|
|
|
|
ASTContext &ctx = getASTContext();
|
|
auto contextInfo = ctx.getOrCreateLazyIterableContextData(this, lazyLoader);
|
|
contextInfo->allConformancesData = contextData;
|
|
}
|
|
|
|
std::pair<LazyMemberLoader *, uint64_t>
|
|
NominalTypeDecl::takeConformanceLoaderSlow() {
|
|
assert(Bits.NominalTypeDecl.HasLazyConformances && "not lazy conformances");
|
|
Bits.NominalTypeDecl.HasLazyConformances = false;
|
|
auto contextInfo =
|
|
getASTContext().getOrCreateLazyIterableContextData(this, nullptr);
|
|
return { contextInfo->loader, contextInfo->allConformancesData };
|
|
}
|
|
|
|
ExtensionDecl::ExtensionDecl(SourceLoc extensionLoc,
|
|
TypeRepr *extendedType,
|
|
ArrayRef<TypeLoc> inherited,
|
|
DeclContext *parent,
|
|
TrailingWhereClause *trailingWhereClause)
|
|
: GenericContext(DeclContextKind::ExtensionDecl, parent, nullptr),
|
|
Decl(DeclKind::Extension, parent),
|
|
IterableDeclContext(IterableDeclContextKind::ExtensionDecl),
|
|
ExtensionLoc(extensionLoc),
|
|
ExtendedTypeRepr(extendedType),
|
|
Inherited(inherited)
|
|
{
|
|
Bits.ExtensionDecl.DefaultAndMaxAccessLevel = 0;
|
|
Bits.ExtensionDecl.HasLazyConformances = false;
|
|
setTrailingWhereClause(trailingWhereClause);
|
|
}
|
|
|
|
ExtensionDecl *ExtensionDecl::create(ASTContext &ctx, SourceLoc extensionLoc,
|
|
TypeRepr *extendedType,
|
|
ArrayRef<TypeLoc> inherited,
|
|
DeclContext *parent,
|
|
TrailingWhereClause *trailingWhereClause,
|
|
ClangNode clangNode) {
|
|
unsigned size = sizeof(ExtensionDecl);
|
|
|
|
void *declPtr = allocateMemoryForDecl<ExtensionDecl>(ctx, size,
|
|
!clangNode.isNull());
|
|
|
|
// Construct the extension.
|
|
auto result = ::new (declPtr) ExtensionDecl(extensionLoc, extendedType,
|
|
inherited, parent,
|
|
trailingWhereClause);
|
|
if (clangNode)
|
|
result->setClangNode(clangNode);
|
|
|
|
return result;
|
|
}
|
|
|
|
void ExtensionDecl::setConformanceLoader(LazyMemberLoader *lazyLoader,
|
|
uint64_t contextData) {
|
|
assert(!Bits.ExtensionDecl.HasLazyConformances &&
|
|
"Already have lazy conformances");
|
|
Bits.ExtensionDecl.HasLazyConformances = true;
|
|
|
|
ASTContext &ctx = getASTContext();
|
|
auto contextInfo = ctx.getOrCreateLazyIterableContextData(this, lazyLoader);
|
|
contextInfo->allConformancesData = contextData;
|
|
}
|
|
|
|
std::pair<LazyMemberLoader *, uint64_t>
|
|
ExtensionDecl::takeConformanceLoaderSlow() {
|
|
assert(Bits.ExtensionDecl.HasLazyConformances && "no conformance loader?");
|
|
Bits.ExtensionDecl.HasLazyConformances = false;
|
|
|
|
auto contextInfo =
|
|
getASTContext().getOrCreateLazyIterableContextData(this, nullptr);
|
|
return { contextInfo->loader, contextInfo->allConformancesData };
|
|
}
|
|
|
|
NominalTypeDecl *ExtensionDecl::getExtendedNominal() const {
|
|
assert((hasBeenBound() || canNeverBeBound()) &&
|
|
"Extension must have already been bound (by bindExtensions)");
|
|
return ExtendedNominal.getPointer();
|
|
}
|
|
|
|
NominalTypeDecl *ExtensionDecl::computeExtendedNominal() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, ExtendedNominalRequest{const_cast<ExtensionDecl *>(this)},
|
|
nullptr);
|
|
}
|
|
|
|
bool ExtensionDecl::canNeverBeBound() const {
|
|
// \c bindExtensions() only looks at valid parents for extensions.
|
|
return !hasValidParent();
|
|
}
|
|
|
|
bool ExtensionDecl::hasValidParent() const {
|
|
return getDeclContext()->canBeParentOfExtension();
|
|
}
|
|
|
|
bool ExtensionDecl::isConstrainedExtension() const {
|
|
auto nominal = getExtendedNominal();
|
|
if (!nominal)
|
|
return false;
|
|
|
|
auto typeSig = nominal->getGenericSignature();
|
|
if (!typeSig)
|
|
return false;
|
|
|
|
auto extSig = getGenericSignature();
|
|
if (!extSig)
|
|
return false;
|
|
|
|
// If the generic signature differs from that of the nominal type, it's a
|
|
// constrained extension.
|
|
return !typeSig->isEqual(extSig);
|
|
}
|
|
|
|
bool ExtensionDecl::isEquivalentToExtendedContext() const {
|
|
auto decl = getExtendedNominal();
|
|
bool extendDeclFromSameModule = false;
|
|
auto extensionAlterName = getAlternateModuleName();
|
|
auto typeAlterName = decl->getAlternateModuleName();
|
|
|
|
if (!extensionAlterName.empty()) {
|
|
if (!typeAlterName.empty()) {
|
|
// Case I: type and extension are both moved from somewhere else
|
|
extendDeclFromSameModule = typeAlterName == extensionAlterName;
|
|
} else {
|
|
// Case II: extension alone was moved from somewhere else
|
|
extendDeclFromSameModule = extensionAlterName ==
|
|
decl->getParentModule()->getNameStr();
|
|
}
|
|
} else {
|
|
if (!typeAlterName.empty()) {
|
|
// Case III: extended type alone was moved from somewhere else
|
|
extendDeclFromSameModule = typeAlterName == getParentModule()->getNameStr();
|
|
} else {
|
|
// Case IV: neither of type and extension was moved from somewhere else
|
|
extendDeclFromSameModule = getParentModule() == decl->getParentModule();
|
|
}
|
|
}
|
|
|
|
return extendDeclFromSameModule
|
|
&& !isConstrainedExtension()
|
|
&& !getDeclaredInterfaceType()->isExistentialType();
|
|
}
|
|
|
|
AccessLevel ExtensionDecl::getDefaultAccessLevel() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
DefaultAndMaxAccessLevelRequest{const_cast<ExtensionDecl *>(this)},
|
|
{AccessLevel::Private, AccessLevel::Private}).first;
|
|
}
|
|
|
|
AccessLevel ExtensionDecl::getMaxAccessLevel() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
DefaultAndMaxAccessLevelRequest{const_cast<ExtensionDecl *>(this)},
|
|
{AccessLevel::Private, AccessLevel::Private}).second;
|
|
}
|
|
|
|
Type ExtensionDecl::getExtendedType() const {
|
|
ASTContext &ctx = getASTContext();
|
|
if (auto type = evaluateOrDefault(ctx.evaluator,
|
|
ExtendedTypeRequest{const_cast<ExtensionDecl *>(this)},
|
|
Type()))
|
|
return type;
|
|
return ErrorType::get(ctx);
|
|
}
|
|
|
|
PatternBindingDecl::PatternBindingDecl(SourceLoc StaticLoc,
|
|
StaticSpellingKind StaticSpelling,
|
|
SourceLoc VarLoc,
|
|
unsigned NumPatternEntries,
|
|
DeclContext *Parent)
|
|
: Decl(DeclKind::PatternBinding, Parent),
|
|
StaticLoc(StaticLoc), VarLoc(VarLoc) {
|
|
Bits.PatternBindingDecl.IsStatic = StaticLoc.isValid();
|
|
Bits.PatternBindingDecl.StaticSpelling =
|
|
static_cast<unsigned>(StaticSpelling);
|
|
Bits.PatternBindingDecl.NumPatternEntries = NumPatternEntries;
|
|
}
|
|
|
|
PatternBindingDecl *
|
|
PatternBindingDecl::create(ASTContext &Ctx, SourceLoc StaticLoc,
|
|
StaticSpellingKind StaticSpelling, SourceLoc VarLoc,
|
|
Pattern *Pat, SourceLoc EqualLoc, Expr *E,
|
|
DeclContext *Parent) {
|
|
DeclContext *BindingInitContext = nullptr;
|
|
if (!Parent->isLocalContext())
|
|
BindingInitContext = new (Ctx) PatternBindingInitializer(Parent);
|
|
|
|
auto PBE = PatternBindingEntry(Pat, EqualLoc, E, BindingInitContext);
|
|
auto *Result = create(Ctx, StaticLoc, StaticSpelling, VarLoc, PBE, Parent);
|
|
|
|
if (BindingInitContext)
|
|
cast<PatternBindingInitializer>(BindingInitContext)->setBinding(Result, 0);
|
|
|
|
return Result;
|
|
}
|
|
|
|
PatternBindingDecl *PatternBindingDecl::createImplicit(
|
|
ASTContext &Ctx, StaticSpellingKind StaticSpelling, Pattern *Pat, Expr *E,
|
|
DeclContext *Parent, SourceLoc VarLoc) {
|
|
auto *Result = create(Ctx, /*StaticLoc*/ SourceLoc(), StaticSpelling, VarLoc,
|
|
Pat, /*EqualLoc*/ SourceLoc(), nullptr, Parent);
|
|
Result->setImplicit();
|
|
Result->setInit(0, E);
|
|
return Result;
|
|
}
|
|
|
|
PatternBindingDecl *
|
|
PatternBindingDecl::create(ASTContext &Ctx, SourceLoc StaticLoc,
|
|
StaticSpellingKind StaticSpelling,
|
|
SourceLoc VarLoc,
|
|
ArrayRef<PatternBindingEntry> PatternList,
|
|
DeclContext *Parent) {
|
|
size_t Size = totalSizeToAlloc<PatternBindingEntry>(PatternList.size());
|
|
void *D = allocateMemoryForDecl<PatternBindingDecl>(Ctx, Size,
|
|
/*ClangNode*/false);
|
|
auto PBD = ::new (D) PatternBindingDecl(StaticLoc, StaticSpelling, VarLoc,
|
|
PatternList.size(), Parent);
|
|
|
|
// Set up the patterns.
|
|
auto entries = PBD->getMutablePatternList();
|
|
unsigned elt = 0U-1;
|
|
for (auto pe : PatternList) {
|
|
++elt;
|
|
auto &newEntry = entries[elt];
|
|
newEntry = pe; // This should take care of initializer with flags
|
|
DeclContext *initContext = pe.getInitContext();
|
|
if (!initContext && !Parent->isLocalContext()) {
|
|
auto pbi = new (Ctx) PatternBindingInitializer(Parent);
|
|
pbi->setBinding(PBD, elt);
|
|
initContext = pbi;
|
|
}
|
|
|
|
PBD->setPattern(elt, pe.getPattern(), initContext);
|
|
}
|
|
return PBD;
|
|
}
|
|
|
|
PatternBindingDecl *PatternBindingDecl::createDeserialized(
|
|
ASTContext &Ctx, SourceLoc StaticLoc,
|
|
StaticSpellingKind StaticSpelling,
|
|
SourceLoc VarLoc,
|
|
unsigned NumPatternEntries,
|
|
DeclContext *Parent) {
|
|
size_t Size = totalSizeToAlloc<PatternBindingEntry>(NumPatternEntries);
|
|
void *D = allocateMemoryForDecl<PatternBindingDecl>(Ctx, Size,
|
|
/*ClangNode*/false);
|
|
auto PBD = ::new (D) PatternBindingDecl(StaticLoc, StaticSpelling, VarLoc,
|
|
NumPatternEntries, Parent);
|
|
for (auto &entry : PBD->getMutablePatternList()) {
|
|
entry = PatternBindingEntry(/*Pattern*/ nullptr, /*EqualLoc*/ SourceLoc(),
|
|
/*Init*/ nullptr, /*InitContext*/ nullptr);
|
|
}
|
|
return PBD;
|
|
}
|
|
|
|
ParamDecl *PatternBindingInitializer::getImplicitSelfDecl() const {
|
|
if (SelfParam)
|
|
return SelfParam;
|
|
|
|
if (auto singleVar = getInitializedLazyVar()) {
|
|
auto DC = singleVar->getDeclContext();
|
|
if (DC->isTypeContext()) {
|
|
auto specifier = (DC->getDeclaredInterfaceType()->hasReferenceSemantics()
|
|
? ParamSpecifier::Default
|
|
: ParamSpecifier::InOut);
|
|
|
|
ASTContext &C = DC->getASTContext();
|
|
auto *mutableThis = const_cast<PatternBindingInitializer *>(this);
|
|
auto *LazySelfParam = new (C) ParamDecl(SourceLoc(), SourceLoc(),
|
|
Identifier(), singleVar->getLoc(),
|
|
C.Id_self, mutableThis);
|
|
LazySelfParam->setImplicit();
|
|
LazySelfParam->setSpecifier(specifier);
|
|
LazySelfParam->setInterfaceType(DC->getSelfInterfaceType());
|
|
mutableThis->SelfParam = LazySelfParam;
|
|
}
|
|
}
|
|
|
|
return SelfParam;
|
|
}
|
|
|
|
VarDecl *PatternBindingInitializer::getInitializedLazyVar() const {
|
|
if (auto binding = getBinding()) {
|
|
if (auto var = binding->getSingleVar()) {
|
|
if (var->getAttrs().hasAttribute<LazyAttr>())
|
|
return var;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
unsigned PatternBindingDecl::getPatternEntryIndexForVarDecl(const VarDecl *VD) const {
|
|
assert(VD && "Cannot find a null VarDecl");
|
|
|
|
auto List = getPatternList();
|
|
if (List.size() == 1) {
|
|
assert(List[0].getPattern()->containsVarDecl(VD) &&
|
|
"Single entry PatternBindingDecl is set up wrong");
|
|
return 0;
|
|
}
|
|
|
|
unsigned Result = 0;
|
|
for (auto entry : List) {
|
|
if (entry.getPattern()->containsVarDecl(VD))
|
|
return Result;
|
|
++Result;
|
|
}
|
|
|
|
assert(0 && "PatternBindingDecl doesn't bind the specified VarDecl!");
|
|
return ~0U;
|
|
}
|
|
|
|
Expr *PatternBindingEntry::getOriginalInit() const {
|
|
return InitContextAndFlags.getInt().contains(PatternFlags::IsText)
|
|
? nullptr
|
|
: InitExpr.originalInit;
|
|
}
|
|
|
|
SourceRange PatternBindingEntry::getOriginalInitRange() const {
|
|
if (auto *i = getOriginalInit())
|
|
return i->getSourceRange();
|
|
return SourceRange();
|
|
}
|
|
|
|
void PatternBindingEntry::setOriginalInit(Expr *E) {
|
|
InitExpr.originalInit = E;
|
|
InitContextAndFlags.setInt(InitContextAndFlags.getInt() -
|
|
PatternFlags::IsText);
|
|
}
|
|
|
|
bool PatternBindingEntry::isInitialized(bool onlyExplicit) const {
|
|
// Directly initialized.
|
|
if (getInit() && (!onlyExplicit || getEqualLoc().isValid()))
|
|
return true;
|
|
|
|
// Initialized via a property wrapper.
|
|
if (auto var = getPattern()->getSingleVar()) {
|
|
auto customAttrs = var->getAttachedPropertyWrappers();
|
|
if (customAttrs.size() > 0 && customAttrs[0]->getArg() != nullptr)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void PatternBindingEntry::setInit(Expr *E) {
|
|
auto F = PatternAndFlags.getInt();
|
|
if (E) {
|
|
PatternAndFlags.setInt(F - Flags::Removed);
|
|
} else {
|
|
PatternAndFlags.setInt(F | Flags::Removed);
|
|
}
|
|
InitExpr.initAfterSynthesis = E;
|
|
InitContextAndFlags.setInt(InitContextAndFlags.getInt() -
|
|
PatternFlags::IsText);
|
|
}
|
|
|
|
VarDecl *PatternBindingEntry::getAnchoringVarDecl() const {
|
|
SmallVector<VarDecl *, 8> variables;
|
|
getPattern()->collectVariables(variables);
|
|
if (variables.empty())
|
|
return nullptr;
|
|
return variables[0];
|
|
}
|
|
|
|
SourceLoc PatternBindingEntry::getLastAccessorEndLoc() const {
|
|
SourceLoc lastAccessorEnd;
|
|
getPattern()->forEachVariable([&](VarDecl *var) {
|
|
auto accessorsEndLoc = var->getBracesRange().End;
|
|
if (accessorsEndLoc.isValid())
|
|
lastAccessorEnd = accessorsEndLoc;
|
|
});
|
|
return lastAccessorEnd;
|
|
}
|
|
|
|
SourceLoc PatternBindingEntry::getStartLoc() const {
|
|
return getPattern()->getStartLoc();
|
|
}
|
|
|
|
SourceLoc PatternBindingEntry::getEndLoc(bool omitAccessors) const {
|
|
// Accessors are last
|
|
if (!omitAccessors) {
|
|
const auto lastAccessorEnd = getLastAccessorEndLoc();
|
|
if (lastAccessorEnd.isValid())
|
|
return lastAccessorEnd;
|
|
}
|
|
const auto initEnd = getOriginalInitRange().End;
|
|
if (initEnd.isValid())
|
|
return initEnd;
|
|
|
|
return getPattern()->getEndLoc();
|
|
}
|
|
|
|
SourceRange PatternBindingEntry::getSourceRange(bool omitAccessors) const {
|
|
const SourceLoc startLoc = getStartLoc();
|
|
if (startLoc.isInvalid())
|
|
return SourceRange();
|
|
const SourceLoc endLoc = getEndLoc(omitAccessors);
|
|
if (endLoc.isInvalid())
|
|
return SourceRange();
|
|
return SourceRange(startLoc, endLoc);
|
|
}
|
|
|
|
bool PatternBindingEntry::hasInitStringRepresentation() const {
|
|
if (InitContextAndFlags.getInt().contains(PatternFlags::IsText))
|
|
return !InitStringRepresentation.empty();
|
|
return getInit() && getInit()->getSourceRange().isValid();
|
|
}
|
|
|
|
StringRef PatternBindingEntry::getInitStringRepresentation(
|
|
SmallVectorImpl<char> &scratch) const {
|
|
|
|
assert(hasInitStringRepresentation() &&
|
|
"must check if pattern has string representation");
|
|
|
|
if (InitContextAndFlags.getInt().contains(PatternFlags::IsText) &&
|
|
!InitStringRepresentation.empty())
|
|
return InitStringRepresentation;
|
|
auto &sourceMgr = getAnchoringVarDecl()->getASTContext().SourceMgr;
|
|
auto init = getOriginalInit();
|
|
return extractInlinableText(sourceMgr, init, scratch);
|
|
}
|
|
|
|
SourceRange PatternBindingDecl::getSourceRange() const {
|
|
SourceLoc startLoc = getStartLoc();
|
|
SourceLoc endLoc = getPatternList().back().getSourceRange().End;
|
|
if (startLoc.isValid() != endLoc.isValid()) return SourceRange();
|
|
return { startLoc, endLoc };
|
|
}
|
|
|
|
static StaticSpellingKind getCorrectStaticSpellingForDecl(const Decl *D) {
|
|
if (!D->getDeclContext()->getSelfClassDecl())
|
|
return StaticSpellingKind::KeywordStatic;
|
|
|
|
return StaticSpellingKind::KeywordClass;
|
|
}
|
|
|
|
StaticSpellingKind PatternBindingDecl::getCorrectStaticSpelling() const {
|
|
if (!isStatic())
|
|
return StaticSpellingKind::None;
|
|
if (getStaticSpelling() != StaticSpellingKind::None)
|
|
return getStaticSpelling();
|
|
|
|
return getCorrectStaticSpellingForDecl(this);
|
|
}
|
|
|
|
bool PatternBindingDecl::isAsyncLet() const {
|
|
if (auto var = getAnchoringVarDecl(0))
|
|
return var->isAsyncLet();
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
bool PatternBindingDecl::hasStorage() const {
|
|
// Walk the pattern, to check to see if any of the VarDecls included in it
|
|
// have storage.
|
|
for (auto entry : getPatternList())
|
|
if (entry.getPattern()->hasStorage())
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
void PatternBindingDecl::setPattern(unsigned i, Pattern *P,
|
|
DeclContext *InitContext) {
|
|
auto PatternList = getMutablePatternList();
|
|
PatternList[i].setPattern(P);
|
|
PatternList[i].setInitContext(InitContext);
|
|
|
|
// Make sure that any VarDecl's contained within the pattern know about this
|
|
// PatternBindingDecl as their parent.
|
|
if (P)
|
|
P->forEachVariable([&](VarDecl *VD) {
|
|
if (!VD->isCaptureList())
|
|
VD->setParentPatternBinding(this);
|
|
});
|
|
}
|
|
|
|
|
|
VarDecl *PatternBindingDecl::getSingleVar() const {
|
|
if (getNumPatternEntries() == 1)
|
|
return getPatternList()[0].getPattern()->getSingleVar();
|
|
return nullptr;
|
|
}
|
|
|
|
VarDecl *PatternBindingDecl::getAnchoringVarDecl(unsigned i) const {
|
|
return getPatternList()[i].getAnchoringVarDecl();
|
|
}
|
|
|
|
bool VarDecl::isInitExposedToClients() const {
|
|
// 'lazy' initializers are emitted inside the getter, which is never
|
|
// @inlinable.
|
|
if (getAttrs().hasAttribute<LazyAttr>())
|
|
return false;
|
|
|
|
return hasInitialValue() && isLayoutExposedToClients();
|
|
}
|
|
|
|
bool VarDecl::isLayoutExposedToClients() const {
|
|
auto parent = dyn_cast<NominalTypeDecl>(getDeclContext());
|
|
if (!parent) return false;
|
|
if (isStatic()) return false;
|
|
|
|
if (!hasStorage() &&
|
|
!getAttrs().hasAttribute<LazyAttr>() &&
|
|
!hasAttachedPropertyWrapper()) {
|
|
return false;
|
|
}
|
|
|
|
auto nominalAccess =
|
|
parent->getFormalAccessScope(/*useDC=*/nullptr,
|
|
/*treatUsableFromInlineAsPublic=*/true);
|
|
if (!nominalAccess.isPublic()) return false;
|
|
|
|
return (parent->getAttrs().hasAttribute<FrozenAttr>() ||
|
|
parent->getAttrs().hasAttribute<FixedLayoutAttr>());
|
|
}
|
|
|
|
/// Check whether the given type representation will be
|
|
/// default-initializable.
|
|
static bool isDefaultInitializable(const TypeRepr *typeRepr, ASTContext &ctx) {
|
|
// Look through most attributes.
|
|
if (const auto attributed = dyn_cast<AttributedTypeRepr>(typeRepr)) {
|
|
// Ownership kinds have optionalness requirements.
|
|
if (optionalityOf(attributed->getAttrs().getOwnership()) ==
|
|
ReferenceOwnershipOptionality::Required)
|
|
return true;
|
|
|
|
return isDefaultInitializable(attributed->getTypeRepr(), ctx);
|
|
}
|
|
|
|
// Optional types are default-initializable.
|
|
if (isa<OptionalTypeRepr>(typeRepr) ||
|
|
isa<ImplicitlyUnwrappedOptionalTypeRepr>(typeRepr))
|
|
return true;
|
|
|
|
// Also support the desugared 'Optional<T>' spelling.
|
|
if (!ctx.isSwiftVersionAtLeast(5)) {
|
|
if (auto *identRepr = dyn_cast<SimpleIdentTypeRepr>(typeRepr)) {
|
|
if (identRepr->getNameRef().getBaseIdentifier() == ctx.Id_Void)
|
|
return true;
|
|
}
|
|
|
|
if (auto *identRepr = dyn_cast<GenericIdentTypeRepr>(typeRepr)) {
|
|
if (identRepr->getNameRef().getBaseIdentifier() == ctx.Id_Optional &&
|
|
identRepr->getNumGenericArgs() == 1)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Tuple types are default-initializable if all of their element
|
|
// types are.
|
|
if (const auto tuple = dyn_cast<TupleTypeRepr>(typeRepr)) {
|
|
// ... but not variadic ones.
|
|
if (tuple->hasEllipsis())
|
|
return false;
|
|
|
|
for (const auto &elt : tuple->getElements()) {
|
|
if (!isDefaultInitializable(elt.Type, ctx))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// Not default initializable.
|
|
return false;
|
|
}
|
|
|
|
// @NSManaged properties never get default initialized, nor do debugger
|
|
// variables and immutable properties.
|
|
bool Pattern::isNeverDefaultInitializable() const {
|
|
bool result = false;
|
|
|
|
forEachVariable([&](const VarDecl *var) {
|
|
if (var->getAttrs().hasAttribute<NSManagedAttr>())
|
|
return;
|
|
|
|
if (var->isDebuggerVar() ||
|
|
var->isLet())
|
|
result = true;
|
|
});
|
|
|
|
return result;
|
|
}
|
|
|
|
bool PatternBindingDecl::isDefaultInitializableViaPropertyWrapper(unsigned i) const {
|
|
if (auto singleVar = getSingleVar()) {
|
|
if (auto wrapperInfo = singleVar->getAttachedPropertyWrapperTypeInfo(0)) {
|
|
if (wrapperInfo.defaultInit)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool PatternBindingDecl::isDefaultInitializable(unsigned i) const {
|
|
const auto entry = getPatternList()[i];
|
|
|
|
// If it has an initializer expression, this is trivially true.
|
|
if (entry.isInitialized())
|
|
return true;
|
|
|
|
// If the outermost attached property wrapper vends an `init()`, use that
|
|
// for default initialization.
|
|
if (isDefaultInitializableViaPropertyWrapper(i))
|
|
return true;
|
|
|
|
// If one of the attached wrappers is missing a wrappedValue
|
|
// initializer, cannot default-initialize.
|
|
if (auto singleVar = getSingleVar()) {
|
|
if (auto wrapperInfo = singleVar->getAttachedPropertyWrapperTypeInfo(0)) {
|
|
if (!singleVar->allAttachedPropertyWrappersHaveWrappedValueInit())
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (entry.getPattern()->isNeverDefaultInitializable())
|
|
return false;
|
|
|
|
auto &ctx = getASTContext();
|
|
|
|
// If the pattern is typed as optional (or tuples thereof), it is
|
|
// default initializable.
|
|
if (const auto typedPattern = dyn_cast<TypedPattern>(entry.getPattern())) {
|
|
if (const auto typeRepr = typedPattern->getTypeRepr()) {
|
|
if (::isDefaultInitializable(typeRepr, ctx))
|
|
return true;
|
|
} else if (typedPattern->isImplicit()) {
|
|
// Lazy vars have implicit storage assigned to back them. Because the
|
|
// storage is implicit, the pattern is typed and has a TypeLoc, but not a
|
|
// TypeRepr.
|
|
//
|
|
// All lazy storage is implicitly default initializable, though, because
|
|
// lazy backing storage is optional.
|
|
if (const auto *varDecl = typedPattern->getSingleVar()) {
|
|
// Lazy storage is never user accessible.
|
|
if (!varDecl->isUserAccessible()) {
|
|
if (typedPattern->hasType() &&
|
|
typedPattern->getType()->getOptionalObjectType()) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Otherwise, we can't default initialize this binding.
|
|
return false;
|
|
}
|
|
|
|
|
|
bool PatternBindingDecl::isComputingPatternBindingEntry(
|
|
const VarDecl *vd) const {
|
|
unsigned i = getPatternEntryIndexForVarDecl(vd);
|
|
return getASTContext().evaluator.hasActiveRequest(
|
|
PatternBindingEntryRequest{const_cast<PatternBindingDecl *>(this), i});
|
|
}
|
|
|
|
bool PatternBindingDecl::isExplicitlyInitialized(unsigned i) const {
|
|
const auto &entry = getPatternList()[i];
|
|
return entry.isInitialized(/*onlyExplicit=*/true);
|
|
}
|
|
|
|
SourceLoc PatternBindingDecl::getEqualLoc(unsigned i) const {
|
|
const auto &entry = getPatternList()[i];
|
|
return entry.getEqualLoc();
|
|
}
|
|
|
|
SourceLoc TopLevelCodeDecl::getStartLoc() const {
|
|
return Body->getStartLoc();
|
|
}
|
|
|
|
SourceRange TopLevelCodeDecl::getSourceRange() const {
|
|
return Body->getSourceRange();
|
|
}
|
|
|
|
SourceRange IfConfigDecl::getSourceRange() const {
|
|
return SourceRange(getLoc(), EndLoc);
|
|
}
|
|
|
|
static bool isPolymorphic(const AbstractStorageDecl *storage) {
|
|
if (storage->shouldUseObjCDispatch())
|
|
return true;
|
|
|
|
|
|
// Imported declarations behave like they are dynamic, even if they're
|
|
// not marked as such explicitly.
|
|
if (storage->isObjC() && storage->hasClangNode())
|
|
return true;
|
|
|
|
if (auto *classDecl = dyn_cast<ClassDecl>(storage->getDeclContext())) {
|
|
if (storage->isFinal() || classDecl->isFinal())
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
if (isa<ProtocolDecl>(storage->getDeclContext()))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool isDirectToStorageAccess(const DeclContext *UseDC,
|
|
const VarDecl *var, bool isAccessOnSelf) {
|
|
if (!var->hasStorage())
|
|
return false;
|
|
|
|
auto *AFD = dyn_cast<AbstractFunctionDecl>(UseDC);
|
|
if (AFD == nullptr)
|
|
return false;
|
|
|
|
// The property reference is for immediate class, not a derived class.
|
|
if (AFD->getParent()->getSelfNominalTypeDecl() !=
|
|
var->getDeclContext()->getSelfNominalTypeDecl())
|
|
return false;
|
|
|
|
// If the storage is resilient, we cannot access it directly at all.
|
|
if (var->isResilient(UseDC->getParentModule(),
|
|
UseDC->getResilienceExpansion()))
|
|
return false;
|
|
|
|
if (isa<ConstructorDecl>(AFD) || isa<DestructorDecl>(AFD)) {
|
|
// The access must also be a member access on 'self' in all language modes.
|
|
if (!isAccessOnSelf)
|
|
return false;
|
|
|
|
return true;
|
|
} else if (auto *accessor = dyn_cast<AccessorDecl>(AFD)) {
|
|
// The accessor must be for the variable itself.
|
|
if (accessor->getStorage() != var)
|
|
return false;
|
|
|
|
// In Swift 5 and later, the access must also be a member access on 'self'.
|
|
if (!isAccessOnSelf &&
|
|
var->getDeclContext()->isTypeContext() &&
|
|
var->getASTContext().isSwiftVersionAtLeast(5))
|
|
return false;
|
|
|
|
// As a special case, 'read' and 'modify' coroutines with forced static
|
|
// dispatch must use ordinary semantics, so that the 'modify' coroutine for a
|
|
// 'dynamic' property uses Objective-C message sends and not direct access to
|
|
// storage.
|
|
if (accessor->hasForcedStaticDispatch())
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// Determines the access semantics to use in a DeclRefExpr or
|
|
/// MemberRefExpr use of this value in the specified context.
|
|
AccessSemantics
|
|
ValueDecl::getAccessSemanticsFromContext(const DeclContext *UseDC,
|
|
bool isAccessOnSelf) const {
|
|
if (auto *var = dyn_cast<VarDecl>(this))
|
|
if (isDirectToStorageAccess(UseDC, var, isAccessOnSelf))
|
|
return AccessSemantics::DirectToStorage;
|
|
|
|
// Otherwise, it's a semantically normal access. The client should be
|
|
// able to figure out the most efficient way to do this access.
|
|
return AccessSemantics::Ordinary;
|
|
}
|
|
|
|
static AccessStrategy
|
|
getDirectReadAccessStrategy(const AbstractStorageDecl *storage) {
|
|
switch (storage->getReadImpl()) {
|
|
case ReadImplKind::Stored:
|
|
return AccessStrategy::getStorage();
|
|
case ReadImplKind::Inherited:
|
|
// TODO: maybe add a specific strategy for this?
|
|
return AccessStrategy::getAccessor(AccessorKind::Get,
|
|
/*dispatch*/ false);
|
|
case ReadImplKind::Get:
|
|
return AccessStrategy::getAccessor(AccessorKind::Get,
|
|
/*dispatch*/ false);
|
|
case ReadImplKind::Address:
|
|
return AccessStrategy::getAccessor(AccessorKind::Address,
|
|
/*dispatch*/ false);
|
|
case ReadImplKind::Read:
|
|
return AccessStrategy::getAccessor(AccessorKind::Read,
|
|
/*dispatch*/ false);
|
|
}
|
|
llvm_unreachable("bad impl kind");
|
|
}
|
|
|
|
static AccessStrategy
|
|
getDirectWriteAccessStrategy(const AbstractStorageDecl *storage) {
|
|
switch (storage->getWriteImpl()) {
|
|
case WriteImplKind::Immutable:
|
|
assert(isa<VarDecl>(storage) && cast<VarDecl>(storage)->isLet() &&
|
|
"mutation of a immutable variable that isn't a let");
|
|
return AccessStrategy::getStorage();
|
|
case WriteImplKind::Stored:
|
|
return AccessStrategy::getStorage();
|
|
case WriteImplKind::StoredWithObservers:
|
|
// TODO: maybe add a specific strategy for this?
|
|
return AccessStrategy::getAccessor(AccessorKind::Set,
|
|
/*dispatch*/ false);
|
|
case WriteImplKind::InheritedWithObservers:
|
|
// TODO: maybe add a specific strategy for this?
|
|
return AccessStrategy::getAccessor(AccessorKind::Set,
|
|
/*dispatch*/ false);
|
|
case WriteImplKind::Set:
|
|
return AccessStrategy::getAccessor(AccessorKind::Set,
|
|
/*dispatch*/ false);
|
|
case WriteImplKind::MutableAddress:
|
|
return AccessStrategy::getAccessor(AccessorKind::MutableAddress,
|
|
/*dispatch*/ false);
|
|
case WriteImplKind::Modify:
|
|
return AccessStrategy::getAccessor(AccessorKind::Modify,
|
|
/*dispatch*/ false);
|
|
}
|
|
llvm_unreachable("bad impl kind");
|
|
}
|
|
|
|
static AccessStrategy
|
|
getOpaqueReadAccessStrategy(const AbstractStorageDecl *storage, bool dispatch);
|
|
static AccessStrategy
|
|
getOpaqueWriteAccessStrategy(const AbstractStorageDecl *storage, bool dispatch);
|
|
|
|
static AccessStrategy
|
|
getDirectReadWriteAccessStrategy(const AbstractStorageDecl *storage) {
|
|
switch (storage->getReadWriteImpl()) {
|
|
case ReadWriteImplKind::Immutable:
|
|
assert(isa<VarDecl>(storage) && cast<VarDecl>(storage)->isLet() &&
|
|
"mutation of a immutable variable that isn't a let");
|
|
return AccessStrategy::getStorage();
|
|
case ReadWriteImplKind::Stored: {
|
|
// If the storage isDynamic (and not @objc) use the accessors.
|
|
if (storage->shouldUseNativeDynamicDispatch())
|
|
return AccessStrategy::getMaterializeToTemporary(
|
|
getOpaqueReadAccessStrategy(storage, false),
|
|
getOpaqueWriteAccessStrategy(storage, false));
|
|
return AccessStrategy::getStorage();
|
|
}
|
|
case ReadWriteImplKind::MutableAddress:
|
|
return AccessStrategy::getAccessor(AccessorKind::MutableAddress,
|
|
/*dispatch*/ false);
|
|
case ReadWriteImplKind::Modify:
|
|
return AccessStrategy::getAccessor(AccessorKind::Modify,
|
|
/*dispatch*/ false);
|
|
case ReadWriteImplKind::StoredWithDidSet:
|
|
case ReadWriteImplKind::InheritedWithDidSet:
|
|
if (storage->requiresOpaqueModifyCoroutine() &&
|
|
storage->getParsedAccessor(AccessorKind::DidSet)->isSimpleDidSet()) {
|
|
return AccessStrategy::getAccessor(AccessorKind::Modify,
|
|
/*dispatch*/ false);
|
|
} else {
|
|
return AccessStrategy::getMaterializeToTemporary(
|
|
getDirectReadAccessStrategy(storage),
|
|
getDirectWriteAccessStrategy(storage));
|
|
}
|
|
case ReadWriteImplKind::MaterializeToTemporary:
|
|
return AccessStrategy::getMaterializeToTemporary(
|
|
getDirectReadAccessStrategy(storage),
|
|
getDirectWriteAccessStrategy(storage));
|
|
}
|
|
llvm_unreachable("bad impl kind");
|
|
}
|
|
|
|
static AccessStrategy
|
|
getOpaqueReadAccessStrategy(const AbstractStorageDecl *storage, bool dispatch) {
|
|
if (storage->requiresOpaqueReadCoroutine())
|
|
return AccessStrategy::getAccessor(AccessorKind::Read, dispatch);
|
|
return AccessStrategy::getAccessor(AccessorKind::Get, dispatch);
|
|
}
|
|
|
|
static AccessStrategy
|
|
getOpaqueWriteAccessStrategy(const AbstractStorageDecl *storage, bool dispatch){
|
|
return AccessStrategy::getAccessor(AccessorKind::Set, dispatch);
|
|
}
|
|
|
|
static AccessStrategy
|
|
getOpaqueReadWriteAccessStrategy(const AbstractStorageDecl *storage,
|
|
bool dispatch) {
|
|
if (storage->requiresOpaqueModifyCoroutine())
|
|
return AccessStrategy::getAccessor(AccessorKind::Modify, dispatch);
|
|
return AccessStrategy::getMaterializeToTemporary(
|
|
getOpaqueReadAccessStrategy(storage, dispatch),
|
|
getOpaqueWriteAccessStrategy(storage, dispatch));
|
|
}
|
|
|
|
static AccessStrategy
|
|
getOpaqueAccessStrategy(const AbstractStorageDecl *storage,
|
|
AccessKind accessKind, bool dispatch) {
|
|
switch (accessKind) {
|
|
case AccessKind::Read:
|
|
return getOpaqueReadAccessStrategy(storage, dispatch);
|
|
case AccessKind::Write:
|
|
return getOpaqueWriteAccessStrategy(storage, dispatch);
|
|
case AccessKind::ReadWrite:
|
|
return getOpaqueReadWriteAccessStrategy(storage, dispatch);
|
|
}
|
|
llvm_unreachable("bad access kind");
|
|
}
|
|
|
|
AccessStrategy
|
|
AbstractStorageDecl::getAccessStrategy(AccessSemantics semantics,
|
|
AccessKind accessKind,
|
|
ModuleDecl *module,
|
|
ResilienceExpansion expansion) const {
|
|
switch (semantics) {
|
|
case AccessSemantics::DirectToStorage:
|
|
assert(hasStorage());
|
|
return AccessStrategy::getStorage();
|
|
|
|
case AccessSemantics::Ordinary:
|
|
// Skip these checks for local variables, both because they're unnecessary
|
|
// and because we won't necessarily have computed access.
|
|
if (!getDeclContext()->isLocalContext()) {
|
|
// If the property is defined in a non-final class or a protocol, the
|
|
// accessors are dynamically dispatched, and we cannot do direct access.
|
|
if (isPolymorphic(this))
|
|
return getOpaqueAccessStrategy(this, accessKind, /*dispatch*/ true);
|
|
|
|
if (shouldUseNativeDynamicDispatch())
|
|
return getOpaqueAccessStrategy(this, accessKind, /*dispatch*/ false);
|
|
|
|
// If the storage is resilient from the given module and resilience
|
|
// expansion, we cannot use direct access.
|
|
//
|
|
// If we end up here with a stored property of a type that's resilient
|
|
// from some resilience domain, we cannot do direct access.
|
|
//
|
|
// As an optimization, we do want to perform direct accesses of stored
|
|
// properties declared inside the same resilience domain as the access
|
|
// context.
|
|
//
|
|
// This is done by using DirectToStorage semantics above, with the
|
|
// understanding that the access semantics are with respect to the
|
|
// resilience domain of the accessor's caller.
|
|
bool resilient;
|
|
if (module)
|
|
resilient = isResilient(module, expansion);
|
|
else
|
|
resilient = isResilient();
|
|
|
|
if (resilient)
|
|
return getOpaqueAccessStrategy(this, accessKind, /*dispatch*/ false);
|
|
}
|
|
|
|
LLVM_FALLTHROUGH;
|
|
|
|
case AccessSemantics::DirectToImplementation:
|
|
switch (accessKind) {
|
|
case AccessKind::Read:
|
|
return getDirectReadAccessStrategy(this);
|
|
case AccessKind::Write:
|
|
return getDirectWriteAccessStrategy(this);
|
|
case AccessKind::ReadWrite:
|
|
return getDirectReadWriteAccessStrategy(this);
|
|
}
|
|
llvm_unreachable("bad access kind");
|
|
|
|
}
|
|
llvm_unreachable("bad access semantics");
|
|
}
|
|
|
|
bool AbstractStorageDecl::requiresOpaqueAccessors() const {
|
|
// Subscripts always require opaque accessors, so don't even kick off
|
|
// a request.
|
|
auto *var = dyn_cast<VarDecl>(this);
|
|
if (var == nullptr)
|
|
return true;
|
|
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
RequiresOpaqueAccessorsRequest{const_cast<VarDecl *>(var)},
|
|
false);
|
|
}
|
|
|
|
bool AbstractStorageDecl::requiresOpaqueAccessor(AccessorKind kind) const {
|
|
switch (kind) {
|
|
case AccessorKind::Get:
|
|
return requiresOpaqueGetter();
|
|
case AccessorKind::Set:
|
|
return requiresOpaqueSetter();
|
|
case AccessorKind::Read:
|
|
return requiresOpaqueReadCoroutine();
|
|
case AccessorKind::Modify:
|
|
return requiresOpaqueModifyCoroutine();
|
|
|
|
// Other accessors are never part of the opaque-accessors set.
|
|
#define OPAQUE_ACCESSOR(ID, KEYWORD)
|
|
#define ACCESSOR(ID) \
|
|
case AccessorKind::ID:
|
|
#include "swift/AST/AccessorKinds.def"
|
|
return false;
|
|
}
|
|
llvm_unreachable("bad accessor kind");
|
|
}
|
|
|
|
bool AbstractStorageDecl::requiresOpaqueModifyCoroutine() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
RequiresOpaqueModifyCoroutineRequest{const_cast<AbstractStorageDecl *>(this)},
|
|
false);
|
|
}
|
|
|
|
AccessorDecl *AbstractStorageDecl::getSynthesizedAccessor(AccessorKind kind) const {
|
|
if (auto *accessor = getAccessor(kind))
|
|
return accessor;
|
|
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
SynthesizeAccessorRequest{const_cast<AbstractStorageDecl *>(this), kind},
|
|
nullptr);
|
|
}
|
|
|
|
AccessorDecl *AbstractStorageDecl::getOpaqueAccessor(AccessorKind kind) const {
|
|
auto *accessor = getAccessor(kind);
|
|
if (accessor && !accessor->isImplicit())
|
|
return accessor;
|
|
|
|
if (!requiresOpaqueAccessors())
|
|
return nullptr;
|
|
|
|
if (!requiresOpaqueAccessor(kind))
|
|
return nullptr;
|
|
|
|
return getSynthesizedAccessor(kind);
|
|
}
|
|
|
|
ArrayRef<AccessorDecl*> AbstractStorageDecl::getOpaqueAccessors(
|
|
llvm::SmallVectorImpl<AccessorDecl*> &scratch) const {
|
|
visitOpaqueAccessors([&](AccessorDecl *D) { scratch.push_back(D); });
|
|
return scratch;
|
|
}
|
|
|
|
bool AbstractStorageDecl::hasParsedAccessors() const {
|
|
for (auto *accessor : getAllAccessors())
|
|
if (!accessor->isImplicit())
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
AccessorDecl *AbstractStorageDecl::getParsedAccessor(AccessorKind kind) const {
|
|
auto *accessor = getAccessor(kind);
|
|
if (accessor && !accessor->isImplicit())
|
|
return accessor;
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void AbstractStorageDecl::visitParsedAccessors(
|
|
llvm::function_ref<void (AccessorDecl*)> visit) const {
|
|
for (auto *accessor : getAllAccessors())
|
|
if (!accessor->isImplicit())
|
|
visit(accessor);
|
|
}
|
|
|
|
void AbstractStorageDecl::visitEmittedAccessors(
|
|
llvm::function_ref<void (AccessorDecl*)> visit) const {
|
|
visitParsedAccessors(visit);
|
|
visitOpaqueAccessors([&](AccessorDecl *accessor) {
|
|
if (accessor->isImplicit())
|
|
visit(accessor);
|
|
});
|
|
}
|
|
|
|
void AbstractStorageDecl::visitExpectedOpaqueAccessors(
|
|
llvm::function_ref<void (AccessorKind)> visit) const {
|
|
if (!requiresOpaqueAccessors())
|
|
return;
|
|
|
|
if (requiresOpaqueGetter())
|
|
visit(AccessorKind::Get);
|
|
|
|
if (requiresOpaqueReadCoroutine())
|
|
visit(AccessorKind::Read);
|
|
|
|
// All mutable storage should have a setter.
|
|
if (requiresOpaqueSetter())
|
|
visit(AccessorKind::Set);
|
|
|
|
// Include the modify coroutine if it's required.
|
|
if (requiresOpaqueModifyCoroutine())
|
|
visit(AccessorKind::Modify);
|
|
}
|
|
|
|
void AbstractStorageDecl::visitOpaqueAccessors(
|
|
llvm::function_ref<void (AccessorDecl*)> visit) const {
|
|
visitExpectedOpaqueAccessors([&](AccessorKind kind) {
|
|
auto accessor = getSynthesizedAccessor(kind);
|
|
assert(!accessor->hasForcedStaticDispatch() &&
|
|
"opaque accessor with forced static dispatch?");
|
|
visit(accessor);
|
|
});
|
|
}
|
|
|
|
static bool hasPrivateOrFilePrivateFormalAccess(const ValueDecl *D) {
|
|
return D->getFormalAccess() <= AccessLevel::FilePrivate;
|
|
}
|
|
|
|
/// Returns true if one of the ancestor DeclContexts of this ValueDecl is either
|
|
/// marked private or fileprivate or is a local context.
|
|
static bool isInPrivateOrLocalContext(const ValueDecl *D) {
|
|
const DeclContext *DC = D->getDeclContext();
|
|
if (!DC->isTypeContext()) {
|
|
assert((DC->isModuleScopeContext() || DC->isLocalContext()) &&
|
|
"unexpected context kind");
|
|
return DC->isLocalContext();
|
|
}
|
|
|
|
auto *nominal = DC->getSelfNominalTypeDecl();
|
|
if (nominal == nullptr)
|
|
return false;
|
|
|
|
if (hasPrivateOrFilePrivateFormalAccess(nominal))
|
|
return true;
|
|
return isInPrivateOrLocalContext(nominal);
|
|
}
|
|
|
|
bool ValueDecl::isOutermostPrivateOrFilePrivateScope() const {
|
|
return hasPrivateOrFilePrivateFormalAccess(this) &&
|
|
!isInPrivateOrLocalContext(this);
|
|
}
|
|
|
|
bool AbstractStorageDecl::isFormallyResilient() const {
|
|
// Check for an explicit @_fixed_layout attribute.
|
|
if (getAttrs().hasAttribute<FixedLayoutAttr>())
|
|
return false;
|
|
|
|
// If we're an instance property of a nominal type, query the type.
|
|
auto *dc = getDeclContext();
|
|
if (!isStatic())
|
|
if (auto *nominalDecl = dc->getSelfNominalTypeDecl())
|
|
return nominalDecl->isResilient();
|
|
|
|
// Non-public global and static variables always have a
|
|
// fixed layout.
|
|
if (!getFormalAccessScope(/*useDC=*/nullptr,
|
|
/*treatUsableFromInlineAsPublic=*/true).isPublic())
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool AbstractStorageDecl::isResilient() const {
|
|
if (!isFormallyResilient())
|
|
return false;
|
|
|
|
return getModuleContext()->isResilient();
|
|
}
|
|
|
|
bool AbstractStorageDecl::isResilient(ModuleDecl *M,
|
|
ResilienceExpansion expansion) const {
|
|
switch (expansion) {
|
|
case ResilienceExpansion::Minimal:
|
|
return isResilient();
|
|
case ResilienceExpansion::Maximal:
|
|
return M != getModuleContext() && isResilient();
|
|
}
|
|
llvm_unreachable("bad resilience expansion");
|
|
}
|
|
|
|
bool AbstractStorageDecl::isValidKeyPathComponent() const {
|
|
// Check whether we're an ABI compatible override of another property. If we
|
|
// are, then the key path should refer to the base decl instead.
|
|
auto &ctx = getASTContext();
|
|
auto isABICompatibleOverride = evaluateOrDefault(
|
|
ctx.evaluator,
|
|
IsABICompatibleOverrideRequest{const_cast<AbstractStorageDecl *>(this)},
|
|
false);
|
|
return !isABICompatibleOverride;
|
|
}
|
|
|
|
bool AbstractStorageDecl::isGetterMutating() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
IsGetterMutatingRequest{const_cast<AbstractStorageDecl *>(this)}, {});
|
|
}
|
|
|
|
bool AbstractStorageDecl::isSetterMutating() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
IsSetterMutatingRequest{const_cast<AbstractStorageDecl *>(this)}, {});
|
|
}
|
|
|
|
OpaqueReadOwnership AbstractStorageDecl::getOpaqueReadOwnership() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
OpaqueReadOwnershipRequest{const_cast<AbstractStorageDecl *>(this)}, {});
|
|
}
|
|
|
|
bool ValueDecl::isInstanceMember() const {
|
|
DeclContext *DC = getDeclContext();
|
|
if (!DC->isTypeContext())
|
|
return false;
|
|
|
|
switch (getKind()) {
|
|
case DeclKind::Import:
|
|
case DeclKind::Extension:
|
|
case DeclKind::PatternBinding:
|
|
case DeclKind::EnumCase:
|
|
case DeclKind::TopLevelCode:
|
|
case DeclKind::InfixOperator:
|
|
case DeclKind::PrefixOperator:
|
|
case DeclKind::PostfixOperator:
|
|
case DeclKind::IfConfig:
|
|
case DeclKind::PoundDiagnostic:
|
|
case DeclKind::PrecedenceGroup:
|
|
case DeclKind::MissingMember:
|
|
llvm_unreachable("Not a ValueDecl");
|
|
|
|
case DeclKind::Class:
|
|
case DeclKind::Enum:
|
|
case DeclKind::Protocol:
|
|
case DeclKind::Struct:
|
|
case DeclKind::TypeAlias:
|
|
case DeclKind::GenericTypeParam:
|
|
case DeclKind::AssociatedType:
|
|
case DeclKind::OpaqueType:
|
|
// Types are not instance members.
|
|
return false;
|
|
|
|
case DeclKind::Constructor:
|
|
// Constructors are not instance members.
|
|
return false;
|
|
|
|
case DeclKind::Destructor:
|
|
// Destructors are technically instance members, although they
|
|
// can't actually be referenced as such.
|
|
return true;
|
|
|
|
case DeclKind::Func:
|
|
case DeclKind::Accessor:
|
|
// Non-static methods are instance members.
|
|
return !cast<FuncDecl>(this)->isStatic();
|
|
|
|
case DeclKind::EnumElement:
|
|
case DeclKind::Param:
|
|
// enum elements and function parameters are not instance members.
|
|
return false;
|
|
|
|
case DeclKind::Subscript:
|
|
case DeclKind::Var:
|
|
// Non-static variables and subscripts are instance members.
|
|
return !cast<AbstractStorageDecl>(this)->isStatic();
|
|
|
|
case DeclKind::Module:
|
|
// Modules are never instance members.
|
|
return false;
|
|
}
|
|
llvm_unreachable("bad DeclKind");
|
|
}
|
|
|
|
unsigned ValueDecl::getLocalDiscriminator() const {
|
|
return LocalDiscriminator;
|
|
}
|
|
|
|
void ValueDecl::setLocalDiscriminator(unsigned index) {
|
|
assert(getDeclContext()->isLocalContext());
|
|
assert(LocalDiscriminator == 0 && "LocalDiscriminator is set multiple times");
|
|
LocalDiscriminator = index;
|
|
}
|
|
|
|
ValueDecl *ValueDecl::getOverriddenDecl() const {
|
|
auto overridden = getOverriddenDecls();
|
|
if (overridden.empty()) return nullptr;
|
|
|
|
// FIXME: Arbitrarily pick the first overridden declaration.
|
|
return overridden.front();
|
|
}
|
|
|
|
bool ValueDecl::overriddenDeclsComputed() const {
|
|
return LazySemanticInfo.hasOverriddenComputed;
|
|
}
|
|
|
|
bool swift::conflicting(const OverloadSignature& sig1,
|
|
const OverloadSignature& sig2,
|
|
bool skipProtocolExtensionCheck) {
|
|
// A member of a protocol extension never conflicts with a member of a
|
|
// protocol.
|
|
if (!skipProtocolExtensionCheck &&
|
|
sig1.InProtocolExtension != sig2.InProtocolExtension)
|
|
return false;
|
|
|
|
// If the base names are different, they can't conflict.
|
|
if (sig1.Name.getBaseName() != sig2.Name.getBaseName())
|
|
return false;
|
|
|
|
// If one is an operator and the other is not, they can't conflict.
|
|
if (sig1.UnaryOperator != sig2.UnaryOperator)
|
|
return false;
|
|
|
|
// If one is an instance and the other is not, they can't conflict.
|
|
if (sig1.IsInstanceMember != sig2.IsInstanceMember)
|
|
return false;
|
|
|
|
// If one is a compound name and the other is not, they do not conflict
|
|
// if one is a property and the other is a non-nullary function.
|
|
if (sig1.Name.isCompoundName() != sig2.Name.isCompoundName()) {
|
|
return !((sig1.IsVariable && !sig2.Name.getArgumentNames().empty()) ||
|
|
(sig2.IsVariable && !sig1.Name.getArgumentNames().empty()));
|
|
}
|
|
|
|
// Note that we intentionally ignore the HasOpaqueReturnType bit here.
|
|
// For declarations that can't be overloaded by type, we want them to be
|
|
// considered conflicting independent of their type.
|
|
|
|
return sig1.Name == sig2.Name;
|
|
}
|
|
|
|
bool swift::conflicting(ASTContext &ctx,
|
|
const OverloadSignature& sig1, CanType sig1Type,
|
|
const OverloadSignature& sig2, CanType sig2Type,
|
|
bool *wouldConflictInSwift5,
|
|
bool skipProtocolExtensionCheck) {
|
|
// If the signatures don't conflict to begin with, we're done.
|
|
if (!conflicting(sig1, sig2, skipProtocolExtensionCheck))
|
|
return false;
|
|
|
|
// Functions and enum elements do not conflict with each other if their types
|
|
// are different.
|
|
if (((sig1.IsFunction && sig2.IsEnumElement) ||
|
|
(sig1.IsEnumElement && sig2.IsFunction)) &&
|
|
sig1Type != sig2Type) {
|
|
return false;
|
|
}
|
|
|
|
// Nominal types and enum elements always conflict with each other.
|
|
if ((sig1.IsNominal && sig2.IsEnumElement) ||
|
|
(sig1.IsEnumElement && sig2.IsNominal)) {
|
|
return true;
|
|
}
|
|
|
|
// Typealiases and enum elements always conflict with each other.
|
|
if ((sig1.IsTypeAlias && sig2.IsEnumElement) ||
|
|
(sig1.IsEnumElement && sig2.IsTypeAlias)) {
|
|
return true;
|
|
}
|
|
|
|
// Enum elements always conflict with each other. At this point, they
|
|
// have the same base name but different types.
|
|
if (sig1.IsEnumElement && sig2.IsEnumElement) {
|
|
return true;
|
|
}
|
|
|
|
// Functions always conflict with non-functions with the same signature.
|
|
// In practice, this only applies for zero argument functions.
|
|
if (sig1.IsFunction != sig2.IsFunction)
|
|
return true;
|
|
|
|
// Variables always conflict with non-variables with the same signature.
|
|
// (e.g variables with zero argument functions, variables with type
|
|
// declarations)
|
|
if (sig1.IsVariable != sig2.IsVariable) {
|
|
// Prior to Swift 5, we permitted redeclarations of variables as different
|
|
// declarations if the variable was declared in an extension of a generic
|
|
// type. Make sure we maintain this behaviour in versions < 5.
|
|
if (!ctx.isSwiftVersionAtLeast(5)) {
|
|
if ((sig1.IsVariable && sig1.InExtensionOfGenericType) ||
|
|
(sig2.IsVariable && sig2.InExtensionOfGenericType)) {
|
|
if (wouldConflictInSwift5)
|
|
*wouldConflictInSwift5 = true;
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// Otherwise, the declarations conflict if the overload types are the same.
|
|
if (sig1.HasOpaqueReturnType != sig2.HasOpaqueReturnType)
|
|
return false;
|
|
|
|
if (sig1Type != sig2Type)
|
|
return false;
|
|
|
|
// The Swift 5 overload types are the same, but similar to the above, prior to
|
|
// Swift 5, a variable not in an extension of a generic type got a null
|
|
// overload type instead of a function type as it does now, so we really
|
|
// follow that behaviour and warn if there's going to be a conflict in future.
|
|
if (!ctx.isSwiftVersionAtLeast(5)) {
|
|
auto swift4Sig1Type = sig1.IsVariable && !sig1.InExtensionOfGenericType
|
|
? CanType()
|
|
: sig1Type;
|
|
auto swift4Sig2Type = sig1.IsVariable && !sig2.InExtensionOfGenericType
|
|
? CanType()
|
|
: sig1Type;
|
|
if (swift4Sig1Type != swift4Sig2Type) {
|
|
// Old was different to the new behaviour!
|
|
if (wouldConflictInSwift5)
|
|
*wouldConflictInSwift5 = true;
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static Type mapSignatureFunctionType(ASTContext &ctx, Type type,
|
|
bool topLevelFunction,
|
|
bool isMethod,
|
|
bool isInitializer,
|
|
unsigned curryLevels);
|
|
|
|
/// Map a type within the signature of a declaration.
|
|
static Type mapSignatureType(ASTContext &ctx, Type type) {
|
|
return type.transform([&](Type type) -> Type {
|
|
if (type->is<FunctionType>()) {
|
|
return mapSignatureFunctionType(ctx, type, false, false, false, 1);
|
|
}
|
|
|
|
return type;
|
|
});
|
|
}
|
|
|
|
/// Map a signature type for a parameter.
|
|
static Type mapSignatureParamType(ASTContext &ctx, Type type) {
|
|
return mapSignatureType(ctx, type);
|
|
}
|
|
|
|
/// Map an ExtInfo for a function type.
|
|
///
|
|
/// When checking if two signatures should be equivalent for overloading,
|
|
/// we may need to compare the extended information.
|
|
///
|
|
/// In the type of the function declaration, none of the extended information
|
|
/// is relevant. We cannot overload purely on 'throws' or the calling
|
|
/// convention of the declaration itself.
|
|
///
|
|
/// For function parameter types, we do want to be able to overload on
|
|
/// 'throws', since that is part of the mangled symbol name, but not
|
|
/// @noescape.
|
|
static AnyFunctionType::ExtInfo
|
|
mapSignatureExtInfo(AnyFunctionType::ExtInfo info,
|
|
bool topLevelFunction) {
|
|
if (topLevelFunction)
|
|
return AnyFunctionType::ExtInfo();
|
|
return AnyFunctionType::ExtInfoBuilder()
|
|
.withRepresentation(info.getRepresentation())
|
|
.withConcurrent(info.isConcurrent())
|
|
.withAsync(info.isAsync())
|
|
.withThrows(info.isThrowing())
|
|
.withClangFunctionType(info.getClangTypeInfo().getType())
|
|
.build();
|
|
}
|
|
|
|
/// Map a function's type to the type used for computing signatures,
|
|
/// which involves stripping some attributes, stripping default arguments,
|
|
/// transforming implicitly unwrapped optionals into strict optionals,
|
|
/// stripping 'inout' on the 'self' parameter etc.
|
|
static Type mapSignatureFunctionType(ASTContext &ctx, Type type,
|
|
bool topLevelFunction,
|
|
bool isMethod,
|
|
bool isInitializer,
|
|
unsigned curryLevels) {
|
|
if (type->hasError()) {
|
|
return type;
|
|
}
|
|
|
|
if (curryLevels == 0) {
|
|
// In an initializer, ignore optionality.
|
|
if (isInitializer) {
|
|
if (auto objectType = type->getOptionalObjectType()) {
|
|
type = objectType;
|
|
}
|
|
}
|
|
|
|
// Functions and subscripts cannot overload differing only in opaque return
|
|
// types. Replace the opaque type with `Any`.
|
|
if (type->is<OpaqueTypeArchetypeType>()) {
|
|
type = ProtocolCompositionType::get(ctx, {}, /*hasAnyObject*/ false);
|
|
}
|
|
|
|
return mapSignatureParamType(ctx, type);
|
|
}
|
|
|
|
auto funcTy = type->castTo<AnyFunctionType>();
|
|
SmallVector<AnyFunctionType::Param, 4> newParams;
|
|
for (const auto ¶m : funcTy->getParams()) {
|
|
auto newParamType = mapSignatureParamType(ctx, param.getPlainType());
|
|
|
|
// Don't allow overloading by @_nonEphemeral.
|
|
auto newFlags = param.getParameterFlags().withNonEphemeral(false);
|
|
|
|
// For the 'self' of a method, strip off 'inout'.
|
|
if (isMethod) {
|
|
newFlags = newFlags.withInOut(false);
|
|
}
|
|
|
|
AnyFunctionType::Param newParam(newParamType, param.getLabel(), newFlags);
|
|
newParams.push_back(newParam);
|
|
}
|
|
|
|
// Map the result type.
|
|
auto resultTy = mapSignatureFunctionType(
|
|
ctx, funcTy->getResult(), topLevelFunction, false, isInitializer,
|
|
curryLevels - 1);
|
|
|
|
// Map various attributes differently depending on if we're looking at
|
|
// the declaration, or a function parameter type.
|
|
AnyFunctionType::ExtInfo info = mapSignatureExtInfo(
|
|
funcTy->getExtInfo(), topLevelFunction);
|
|
|
|
// Rebuild the resulting function type.
|
|
if (auto genericFuncTy = dyn_cast<GenericFunctionType>(funcTy))
|
|
return GenericFunctionType::get(genericFuncTy->getGenericSignature(),
|
|
newParams, resultTy, info);
|
|
|
|
return FunctionType::get(newParams, resultTy, info);
|
|
}
|
|
|
|
OverloadSignature ValueDecl::getOverloadSignature() const {
|
|
OverloadSignature signature;
|
|
|
|
signature.Name = getName();
|
|
signature.InProtocolExtension
|
|
= static_cast<bool>(getDeclContext()->getExtendedProtocolDecl());
|
|
signature.IsInstanceMember = isInstanceMember();
|
|
signature.IsVariable = isa<VarDecl>(this);
|
|
signature.IsFunction = isa<AbstractFunctionDecl>(this);
|
|
signature.IsEnumElement = isa<EnumElementDecl>(this);
|
|
signature.IsNominal = isa<NominalTypeDecl>(this);
|
|
signature.IsTypeAlias = isa<TypeAliasDecl>(this);
|
|
signature.HasOpaqueReturnType =
|
|
!signature.IsVariable && (bool)getOpaqueResultTypeDecl();
|
|
|
|
// Unary operators also include prefix/postfix.
|
|
if (auto func = dyn_cast<FuncDecl>(this)) {
|
|
if (func->isUnaryOperator()) {
|
|
signature.UnaryOperator = func->getAttrs().getUnaryOperatorKind();
|
|
}
|
|
}
|
|
|
|
if (auto *extension = dyn_cast<ExtensionDecl>(getDeclContext()))
|
|
if (extension->isGeneric())
|
|
signature.InExtensionOfGenericType = true;
|
|
|
|
return signature;
|
|
}
|
|
|
|
CanType ValueDecl::getOverloadSignatureType() const {
|
|
if (auto *afd = dyn_cast<AbstractFunctionDecl>(this)) {
|
|
bool isMethod = afd->hasImplicitSelfDecl();
|
|
return mapSignatureFunctionType(
|
|
getASTContext(), getInterfaceType(),
|
|
/*topLevelFunction=*/true,
|
|
isMethod,
|
|
/*isInitializer=*/isa<ConstructorDecl>(afd),
|
|
getNumCurryLevels())->getCanonicalType();
|
|
}
|
|
|
|
if (isa<AbstractStorageDecl>(this)) {
|
|
// First, get the default overload signature type for the decl. For vars,
|
|
// this is the empty tuple type, as variables cannot be overloaded directly
|
|
// by type. For subscripts, it's their interface type.
|
|
CanType defaultSignatureType;
|
|
if (isa<VarDecl>(this)) {
|
|
defaultSignatureType = TupleType::getEmpty(getASTContext());
|
|
} else {
|
|
defaultSignatureType = mapSignatureFunctionType(
|
|
getASTContext(), getInterfaceType(),
|
|
/*topLevelFunction=*/true,
|
|
/*isMethod=*/false,
|
|
/*isInitializer=*/false,
|
|
getNumCurryLevels())->getCanonicalType();
|
|
}
|
|
|
|
// We want to curry the default signature type with the 'self' type of the
|
|
// given context (if any) in order to ensure the overload signature type
|
|
// is unique across different contexts, such as between a protocol extension
|
|
// and struct decl.
|
|
return defaultSignatureType->addCurriedSelfType(getDeclContext())
|
|
->getCanonicalType();
|
|
}
|
|
|
|
if (isa<EnumElementDecl>(this)) {
|
|
auto mappedType = mapSignatureFunctionType(
|
|
getASTContext(), getInterfaceType(), /*topLevelFunction=*/false,
|
|
/*isMethod=*/false, /*isInitializer=*/false, getNumCurryLevels());
|
|
return mappedType->getCanonicalType();
|
|
}
|
|
|
|
// Note: If you add more cases to this function, you should update the
|
|
// implementation of the swift::conflicting overload that deals with
|
|
// overload types, in order to account for cases where the overload types
|
|
// don't match, but the decls differ and therefore always conflict.
|
|
assert(isa<TypeDecl>(this));
|
|
return CanType();
|
|
}
|
|
|
|
llvm::TinyPtrVector<ValueDecl *> ValueDecl::getOverriddenDecls() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
OverriddenDeclsRequest{const_cast<ValueDecl *>(this)}, {});
|
|
}
|
|
|
|
void ValueDecl::setOverriddenDecls(ArrayRef<ValueDecl *> overridden) {
|
|
llvm::TinyPtrVector<ValueDecl *> overriddenVec(overridden);
|
|
OverriddenDeclsRequest request{const_cast<ValueDecl *>(this)};
|
|
request.cacheResult(overriddenVec);
|
|
}
|
|
|
|
OpaqueReturnTypeRepr *ValueDecl::getOpaqueResultTypeRepr() const {
|
|
TypeRepr *returnRepr = nullptr;
|
|
if (auto *VD = dyn_cast<VarDecl>(this)) {
|
|
if (auto *P = VD->getParentPattern()) {
|
|
while (auto *PP = dyn_cast<ParenPattern>(P))
|
|
P = PP->getSubPattern();
|
|
|
|
if (auto *TP = dyn_cast<TypedPattern>(P)) {
|
|
P = P->getSemanticsProvidingPattern();
|
|
if (auto *NP = dyn_cast<NamedPattern>(P)) {
|
|
assert(NP->getDecl() == VD);
|
|
(void) NP;
|
|
|
|
returnRepr = TP->getTypeRepr();
|
|
}
|
|
}
|
|
} else {
|
|
returnRepr = VD->getTypeReprOrParentPatternTypeRepr();
|
|
}
|
|
} else if (auto *FD = dyn_cast<FuncDecl>(this)) {
|
|
returnRepr = FD->getResultTypeRepr();
|
|
} else if (auto *SD = dyn_cast<SubscriptDecl>(this)) {
|
|
returnRepr = SD->getElementTypeRepr();
|
|
}
|
|
|
|
return dyn_cast_or_null<OpaqueReturnTypeRepr>(returnRepr);
|
|
}
|
|
|
|
OpaqueTypeDecl *ValueDecl::getOpaqueResultTypeDecl() const {
|
|
if (getOpaqueResultTypeRepr() == nullptr) {
|
|
if (isa<ModuleDecl>(this))
|
|
return nullptr;
|
|
auto file = cast<FileUnit>(getDeclContext()->getModuleScopeContext());
|
|
// Don't look up when the decl is from source, otherwise a cycle will happen.
|
|
if (file->getKind() == FileUnitKind::SerializedAST) {
|
|
Mangle::ASTMangler mangler;
|
|
auto name = mangler.mangleOpaqueTypeDecl(this);
|
|
return file->lookupOpaqueResultType(name);
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
OpaqueResultTypeRequest{const_cast<ValueDecl *>(this)},
|
|
nullptr);
|
|
}
|
|
|
|
bool ValueDecl::isObjC() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
IsObjCRequest{const_cast<ValueDecl *>(this)},
|
|
getAttrs().hasAttribute<ObjCAttr>());
|
|
}
|
|
|
|
void ValueDecl::setIsObjC(bool value) {
|
|
assert(!LazySemanticInfo.isObjCComputed || LazySemanticInfo.isObjC == value);
|
|
|
|
if (LazySemanticInfo.isObjCComputed) {
|
|
assert(LazySemanticInfo.isObjC == value);
|
|
return;
|
|
}
|
|
|
|
LazySemanticInfo.isObjCComputed = true;
|
|
LazySemanticInfo.isObjC = value;
|
|
}
|
|
|
|
bool ValueDecl::isFinal() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
IsFinalRequest { const_cast<ValueDecl *>(this) },
|
|
getAttrs().hasAttribute<FinalAttr>());
|
|
}
|
|
|
|
bool ValueDecl::isDynamic() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
IsDynamicRequest{const_cast<ValueDecl *>(this)},
|
|
getAttrs().hasAttribute<DynamicAttr>());
|
|
}
|
|
|
|
bool ValueDecl::isObjCDynamicInGenericClass() const {
|
|
if (!isObjCDynamic())
|
|
return false;
|
|
|
|
auto *DC = this->getDeclContext();
|
|
auto *classDecl = DC->getSelfClassDecl();
|
|
if (!classDecl)
|
|
return false;
|
|
|
|
return classDecl->isGenericContext() && !classDecl->usesObjCGenericsModel();
|
|
}
|
|
|
|
bool ValueDecl::shouldUseObjCMethodReplacement() const {
|
|
if (isNativeDynamic())
|
|
return false;
|
|
|
|
if (getModuleContext()->isImplicitDynamicEnabled() &&
|
|
isObjCDynamicInGenericClass())
|
|
return false;
|
|
|
|
return isObjCDynamic();
|
|
}
|
|
|
|
bool ValueDecl::shouldUseNativeMethodReplacement() const {
|
|
if (isNativeDynamic())
|
|
return true;
|
|
|
|
if (!isObjCDynamicInGenericClass())
|
|
return false;
|
|
|
|
auto *replacedDecl = getDynamicallyReplacedDecl();
|
|
if (replacedDecl)
|
|
return false;
|
|
|
|
return getModuleContext()->isImplicitDynamicEnabled();
|
|
}
|
|
|
|
bool ValueDecl::isNativeMethodReplacement() const {
|
|
// Is this a @_dynamicReplacement(for:) that use the native dynamic function
|
|
// replacement mechanism.
|
|
auto *replacedDecl = getDynamicallyReplacedDecl();
|
|
if (!replacedDecl)
|
|
return false;
|
|
|
|
if (isNativeDynamic())
|
|
return true;
|
|
|
|
if (isObjCDynamicInGenericClass())
|
|
return replacedDecl->getModuleContext()->isImplicitDynamicEnabled();
|
|
|
|
return false;
|
|
}
|
|
|
|
void ValueDecl::setIsDynamic(bool value) {
|
|
assert(!LazySemanticInfo.isDynamicComputed ||
|
|
LazySemanticInfo.isDynamic == value);
|
|
|
|
if (LazySemanticInfo.isDynamicComputed) {
|
|
assert(LazySemanticInfo.isDynamic == value);
|
|
return;
|
|
}
|
|
|
|
LazySemanticInfo.isDynamicComputed = true;
|
|
LazySemanticInfo.isDynamic = value;
|
|
}
|
|
|
|
ValueDecl *ValueDecl::getDynamicallyReplacedDecl() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
DynamicallyReplacedDeclRequest{
|
|
const_cast<ValueDecl *>(this)},
|
|
nullptr);
|
|
}
|
|
|
|
bool ValueDecl::canBeAccessedByDynamicLookup() const {
|
|
if (!hasName())
|
|
return false;
|
|
|
|
auto *dc = getDeclContext();
|
|
if (!dc->mayContainMembersAccessedByDynamicLookup())
|
|
return false;
|
|
|
|
// Dynamic lookup can find functions, variables, and subscripts.
|
|
if (!isa<FuncDecl>(this) && !isa<VarDecl>(this) && !isa<SubscriptDecl>(this))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ValueDecl::isImplicitlyUnwrappedOptional() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
IsImplicitlyUnwrappedOptionalRequest{const_cast<ValueDecl *>(this)},
|
|
false);
|
|
}
|
|
|
|
bool ValueDecl::isLocalCapture() const {
|
|
auto *dc = getDeclContext();
|
|
|
|
if (auto *fd = dyn_cast<FuncDecl>(this))
|
|
if (isa<SourceFile>(dc))
|
|
return fd->hasTopLevelLocalContextCaptures();
|
|
|
|
return dc->isLocalContext();
|
|
}
|
|
|
|
ArrayRef<ValueDecl *>
|
|
ValueDecl::getSatisfiedProtocolRequirements(bool Sorted) const {
|
|
// Dig out the nominal type.
|
|
NominalTypeDecl *NTD = getDeclContext()->getSelfNominalTypeDecl();
|
|
if (!NTD || isa<ProtocolDecl>(NTD))
|
|
return {};
|
|
|
|
return NTD->getSatisfiedProtocolRequirementsForMember(this, Sorted);
|
|
}
|
|
|
|
bool ValueDecl::isProtocolRequirement() const {
|
|
assert(isa<ProtocolDecl>(getDeclContext()));
|
|
|
|
if (isa<AccessorDecl>(this) ||
|
|
isa<TypeAliasDecl>(this) ||
|
|
isa<NominalTypeDecl>(this))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool ValueDecl::hasInterfaceType() const {
|
|
return !TypeAndAccess.getPointer().isNull();
|
|
}
|
|
|
|
static bool isComputingInterfaceType(const ValueDecl *VD) {
|
|
return VD->getASTContext().evaluator.hasActiveRequest(
|
|
InterfaceTypeRequest{const_cast<ValueDecl *>(VD)});
|
|
}
|
|
|
|
bool ValueDecl::isRecursiveValidation() const {
|
|
if (isComputingInterfaceType(this) && !hasInterfaceType())
|
|
return true;
|
|
|
|
if (auto *vd = dyn_cast<VarDecl>(this))
|
|
if (auto *pbd = vd->getParentPatternBinding())
|
|
if (pbd->isComputingPatternBindingEntry(vd))
|
|
return true;
|
|
|
|
auto *dc = getDeclContext();
|
|
while (isa<NominalTypeDecl>(dc))
|
|
dc = dc->getParent();
|
|
|
|
if (auto *ext = dyn_cast<ExtensionDecl>(dc)) {
|
|
if (ext->isComputingGenericSignature())
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
Type ValueDecl::getInterfaceType() const {
|
|
auto &ctx = getASTContext();
|
|
if (auto type =
|
|
evaluateOrDefault(ctx.evaluator,
|
|
InterfaceTypeRequest{const_cast<ValueDecl *>(this)},
|
|
Type()))
|
|
return type;
|
|
return ErrorType::get(ctx);
|
|
}
|
|
|
|
void ValueDecl::setInterfaceType(Type type) {
|
|
assert(!type.isNull() && "Resetting the interface type to null is forbidden");
|
|
getASTContext().evaluator.cacheOutput(InterfaceTypeRequest{this},
|
|
std::move(type));
|
|
}
|
|
|
|
Optional<ObjCSelector> ValueDecl::getObjCRuntimeName(
|
|
bool skipIsObjCResolution) const {
|
|
if (auto func = dyn_cast<AbstractFunctionDecl>(this))
|
|
return func->getObjCSelector(DeclName(), skipIsObjCResolution);
|
|
|
|
ASTContext &ctx = getASTContext();
|
|
auto makeSelector = [&](Identifier name) -> ObjCSelector {
|
|
return ObjCSelector(ctx, 0, { name });
|
|
};
|
|
|
|
if (auto classDecl = dyn_cast<ClassDecl>(this)) {
|
|
SmallString<32> scratch;
|
|
return makeSelector(
|
|
ctx.getIdentifier(classDecl->getObjCRuntimeName(scratch)));
|
|
}
|
|
|
|
if (auto protocol = dyn_cast<ProtocolDecl>(this)) {
|
|
SmallString<32> scratch;
|
|
return makeSelector(
|
|
ctx.getIdentifier(protocol->getObjCRuntimeName(scratch)));
|
|
}
|
|
|
|
if (auto var = dyn_cast<VarDecl>(this))
|
|
return makeSelector(var->getObjCPropertyName());
|
|
|
|
return None;
|
|
}
|
|
|
|
bool ValueDecl::canInferObjCFromRequirement(ValueDecl *requirement) {
|
|
// Only makes sense for a requirement of an @objc protocol.
|
|
auto proto = cast<ProtocolDecl>(requirement->getDeclContext());
|
|
if (!proto->isObjC()) return false;
|
|
|
|
// Only makes sense when this declaration is within a nominal type
|
|
// or extension thereof.
|
|
auto nominal = getDeclContext()->getSelfNominalTypeDecl();
|
|
if (!nominal) return false;
|
|
|
|
// If there is already an @objc attribute with an explicit name, we
|
|
// can't infer a name (it's already there).
|
|
if (auto objcAttr = getAttrs().getAttribute<ObjCAttr>()) {
|
|
if (objcAttr->hasName() && !objcAttr->isNameImplicit())
|
|
return false;
|
|
}
|
|
|
|
// If the nominal type doesn't conform to the protocol at all, we
|
|
// cannot infer @objc no matter what we do.
|
|
SmallVector<ProtocolConformance *, 1> conformances;
|
|
if (!nominal->lookupConformance(getModuleContext(), proto, conformances))
|
|
return false;
|
|
|
|
// If any of the conformances is attributed to the context in which
|
|
// this declaration resides, we can infer @objc or the Objective-C
|
|
// name.
|
|
auto dc = getDeclContext();
|
|
for (auto conformance : conformances) {
|
|
if (conformance->getDeclContext() == dc)
|
|
return true;
|
|
}
|
|
|
|
// Nothing to infer from.
|
|
return false;
|
|
}
|
|
|
|
SourceLoc ValueDecl::getAttributeInsertionLoc(bool forModifier) const {
|
|
if (isImplicit())
|
|
return SourceLoc();
|
|
|
|
if (auto var = dyn_cast<VarDecl>(this)) {
|
|
// [attrs] var ...
|
|
// The attributes are part of the VarDecl, but the 'var' is part of the PBD.
|
|
SourceLoc resultLoc = var->getAttrs().getStartLoc(forModifier);
|
|
if (resultLoc.isValid()) {
|
|
return resultLoc;
|
|
} else if (auto pbd = var->getParentPatternBinding()) {
|
|
return pbd->getStartLoc();
|
|
} else {
|
|
return var->getStartLoc();
|
|
}
|
|
}
|
|
|
|
SourceLoc resultLoc = getAttrs().getStartLoc(forModifier);
|
|
return resultLoc.isValid() ? resultLoc : getStartLoc();
|
|
}
|
|
|
|
/// Returns true if \p VD needs to be treated as publicly-accessible
|
|
/// at the SIL, LLVM, and machine levels due to being @usableFromInline.
|
|
bool ValueDecl::isUsableFromInline() const {
|
|
assert(getFormalAccess() <= AccessLevel::Internal);
|
|
|
|
if (getAttrs().hasAttribute<UsableFromInlineAttr>() ||
|
|
getAttrs().hasAttribute<AlwaysEmitIntoClientAttr>() ||
|
|
getAttrs().hasAttribute<InlinableAttr>())
|
|
return true;
|
|
|
|
if (auto *accessor = dyn_cast<AccessorDecl>(this)) {
|
|
auto *storage = accessor->getStorage();
|
|
if (storage->getAttrs().hasAttribute<UsableFromInlineAttr>() ||
|
|
storage->getAttrs().hasAttribute<AlwaysEmitIntoClientAttr>() ||
|
|
storage->getAttrs().hasAttribute<InlinableAttr>())
|
|
return true;
|
|
}
|
|
|
|
if (auto *EED = dyn_cast<EnumElementDecl>(this))
|
|
if (EED->getParentEnum()->getAttrs().hasAttribute<UsableFromInlineAttr>())
|
|
return true;
|
|
|
|
if (auto *containingProto = dyn_cast<ProtocolDecl>(getDeclContext())) {
|
|
if (containingProto->getAttrs().hasAttribute<UsableFromInlineAttr>())
|
|
return true;
|
|
}
|
|
|
|
if (auto *DD = dyn_cast<DestructorDecl>(this))
|
|
if (auto *CD = dyn_cast<ClassDecl>(DD->getDeclContext()))
|
|
if (CD->getAttrs().hasAttribute<UsableFromInlineAttr>())
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ValueDecl::shouldHideFromEditor() const {
|
|
// Hide private stdlib declarations.
|
|
if (isPrivateStdlibDecl(/*treatNonBuiltinProtocolsAsPublic*/ false) ||
|
|
// ShowInInterfaceAttr is for decls to show in interface as exception but
|
|
// they are not intended to be used directly.
|
|
getAttrs().hasAttribute<ShowInInterfaceAttr>())
|
|
return true;
|
|
|
|
if (AvailableAttr::isUnavailable(this))
|
|
return true;
|
|
|
|
if (auto *ClangD = getClangDecl()) {
|
|
if (ClangD->hasAttr<clang::SwiftPrivateAttr>())
|
|
return true;
|
|
}
|
|
|
|
if (!isUserAccessible())
|
|
return true;
|
|
|
|
// Hide editor placeholders.
|
|
if (getBaseName().isEditorPlaceholder())
|
|
return true;
|
|
|
|
// '$__' names are reserved by compiler internal.
|
|
if (!getBaseName().isSpecial() &&
|
|
getBaseIdentifier().str().startswith("$__"))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// Return maximally open access level which could be associated with the
|
|
/// given declaration accounting for @testable importers.
|
|
static AccessLevel getMaximallyOpenAccessFor(const ValueDecl *decl) {
|
|
// Non-final classes are considered open to @testable importers.
|
|
if (auto cls = dyn_cast<ClassDecl>(decl)) {
|
|
if (!cls->isFinal())
|
|
return AccessLevel::Open;
|
|
|
|
// Non-final overridable class members are considered open to
|
|
// @testable importers.
|
|
} else if (decl->isPotentiallyOverridable()) {
|
|
if (!cast<ValueDecl>(decl)->isFinal())
|
|
return AccessLevel::Open;
|
|
}
|
|
|
|
// Everything else is considered public.
|
|
return AccessLevel::Public;
|
|
}
|
|
|
|
/// Adjust \p access based on whether \p VD is \@usableFromInline, has been
|
|
/// testably imported from \p useDC or \p VD is an imported SPI.
|
|
///
|
|
/// \p access isn't always just `VD->getFormalAccess()` because this adjustment
|
|
/// may be for a write, in which case the setter's access might be used instead.
|
|
static AccessLevel getAdjustedFormalAccess(const ValueDecl *VD,
|
|
AccessLevel access,
|
|
const DeclContext *useDC,
|
|
bool treatUsableFromInlineAsPublic) {
|
|
// If access control is disabled in the current context, adjust
|
|
// access level of the current declaration to be as open as possible.
|
|
if (useDC && VD->getASTContext().isAccessControlDisabled())
|
|
return getMaximallyOpenAccessFor(VD);
|
|
|
|
if (treatUsableFromInlineAsPublic &&
|
|
access <= AccessLevel::Internal &&
|
|
VD->isUsableFromInline()) {
|
|
return AccessLevel::Public;
|
|
}
|
|
|
|
if (useDC) {
|
|
// Check whether we need to modify the access level based on
|
|
// @testable/@_private import attributes.
|
|
auto *useSF = dyn_cast<SourceFile>(useDC->getModuleScopeContext());
|
|
if (!useSF) return access;
|
|
if (useSF->hasTestableOrPrivateImport(access, VD))
|
|
return getMaximallyOpenAccessFor(VD);
|
|
}
|
|
|
|
return access;
|
|
}
|
|
|
|
/// Convenience overload that uses `VD->getFormalAccess()` as the access to
|
|
/// adjust.
|
|
static AccessLevel
|
|
getAdjustedFormalAccess(const ValueDecl *VD, const DeclContext *useDC,
|
|
bool treatUsableFromInlineAsPublic) {
|
|
return getAdjustedFormalAccess(VD, VD->getFormalAccess(), useDC,
|
|
treatUsableFromInlineAsPublic);
|
|
}
|
|
|
|
AccessLevel ValueDecl::getEffectiveAccess() const {
|
|
auto effectiveAccess =
|
|
getAdjustedFormalAccess(this, /*useDC=*/nullptr,
|
|
/*treatUsableFromInlineAsPublic=*/true);
|
|
|
|
// Handle @testable/@_private(sourceFile:)
|
|
switch (effectiveAccess) {
|
|
case AccessLevel::Open:
|
|
break;
|
|
case AccessLevel::Public:
|
|
case AccessLevel::Internal:
|
|
if (getModuleContext()->isTestingEnabled() ||
|
|
getModuleContext()->arePrivateImportsEnabled())
|
|
effectiveAccess = getMaximallyOpenAccessFor(this);
|
|
break;
|
|
case AccessLevel::FilePrivate:
|
|
if (getModuleContext()->arePrivateImportsEnabled())
|
|
effectiveAccess = getMaximallyOpenAccessFor(this);
|
|
break;
|
|
case AccessLevel::Private:
|
|
effectiveAccess = AccessLevel::FilePrivate;
|
|
if (getModuleContext()->arePrivateImportsEnabled())
|
|
effectiveAccess = getMaximallyOpenAccessFor(this);
|
|
break;
|
|
}
|
|
|
|
auto restrictToEnclosing = [this](AccessLevel effectiveAccess,
|
|
AccessLevel enclosingAccess) -> AccessLevel{
|
|
if (effectiveAccess == AccessLevel::Open &&
|
|
enclosingAccess == AccessLevel::Public &&
|
|
isa<NominalTypeDecl>(this)) {
|
|
// Special case: an open class may be contained in a public
|
|
// class/struct/enum. Leave effectiveAccess as is.
|
|
return effectiveAccess;
|
|
}
|
|
return std::min(effectiveAccess, enclosingAccess);
|
|
};
|
|
|
|
if (auto enclosingNominal = dyn_cast<NominalTypeDecl>(getDeclContext())) {
|
|
effectiveAccess =
|
|
restrictToEnclosing(effectiveAccess,
|
|
enclosingNominal->getEffectiveAccess());
|
|
|
|
} else if (auto enclosingExt = dyn_cast<ExtensionDecl>(getDeclContext())) {
|
|
// Just check the base type. If it's a constrained extension, Sema should
|
|
// have already enforced access more strictly.
|
|
if (auto nominal = enclosingExt->getExtendedNominal()) {
|
|
effectiveAccess =
|
|
restrictToEnclosing(effectiveAccess, nominal->getEffectiveAccess());
|
|
}
|
|
|
|
} else if (getDeclContext()->isLocalContext()) {
|
|
effectiveAccess = AccessLevel::FilePrivate;
|
|
}
|
|
|
|
return effectiveAccess;
|
|
}
|
|
|
|
AccessLevel ValueDecl::getFormalAccess() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
AccessLevelRequest{const_cast<ValueDecl *>(this)}, AccessLevel::Private);
|
|
}
|
|
|
|
bool ValueDecl::hasOpenAccess(const DeclContext *useDC) const {
|
|
assert(isa<ClassDecl>(this) || isa<ConstructorDecl>(this) ||
|
|
isPotentiallyOverridable());
|
|
|
|
AccessLevel access =
|
|
getAdjustedFormalAccess(this, useDC,
|
|
/*treatUsableFromInlineAsPublic*/false);
|
|
return access == AccessLevel::Open;
|
|
}
|
|
|
|
/// Given the formal access level for using \p VD, compute the scope where
|
|
/// \p VD may be accessed, taking \@usableFromInline, \@testable imports,
|
|
/// \@_spi imports, and enclosing access levels into account.
|
|
///
|
|
/// \p access isn't always just `VD->getFormalAccess()` because this adjustment
|
|
/// may be for a write, in which case the setter's access might be used instead.
|
|
static AccessScope
|
|
getAccessScopeForFormalAccess(const ValueDecl *VD,
|
|
AccessLevel formalAccess,
|
|
const DeclContext *useDC,
|
|
bool treatUsableFromInlineAsPublic) {
|
|
AccessLevel access = getAdjustedFormalAccess(VD, formalAccess, useDC,
|
|
treatUsableFromInlineAsPublic);
|
|
const DeclContext *resultDC = VD->getDeclContext();
|
|
|
|
while (!resultDC->isModuleScopeContext()) {
|
|
if (isa<TopLevelCodeDecl>(resultDC)) {
|
|
return AccessScope(resultDC->getModuleScopeContext(),
|
|
access == AccessLevel::Private);
|
|
}
|
|
|
|
if (resultDC->isLocalContext() || access == AccessLevel::Private)
|
|
return AccessScope(resultDC, /*private*/true);
|
|
|
|
if (auto enclosingNominal = dyn_cast<GenericTypeDecl>(resultDC)) {
|
|
auto enclosingAccess =
|
|
getAdjustedFormalAccess(enclosingNominal, useDC,
|
|
treatUsableFromInlineAsPublic);
|
|
access = std::min(access, enclosingAccess);
|
|
|
|
} else if (auto enclosingExt = dyn_cast<ExtensionDecl>(resultDC)) {
|
|
// Just check the base type. If it's a constrained extension, Sema should
|
|
// have already enforced access more strictly.
|
|
if (auto nominal = enclosingExt->getExtendedNominal()) {
|
|
if (nominal->getParentModule() == enclosingExt->getParentModule()) {
|
|
auto nominalAccess =
|
|
getAdjustedFormalAccess(nominal, useDC,
|
|
treatUsableFromInlineAsPublic);
|
|
access = std::min(access, nominalAccess);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
llvm_unreachable("unknown DeclContext kind");
|
|
}
|
|
|
|
resultDC = resultDC->getParent();
|
|
}
|
|
|
|
switch (access) {
|
|
case AccessLevel::Private:
|
|
case AccessLevel::FilePrivate:
|
|
assert(resultDC->isModuleScopeContext());
|
|
return AccessScope(resultDC, access == AccessLevel::Private);
|
|
case AccessLevel::Internal:
|
|
return AccessScope(resultDC->getParentModule());
|
|
case AccessLevel::Public:
|
|
case AccessLevel::Open:
|
|
return AccessScope::getPublic();
|
|
}
|
|
|
|
llvm_unreachable("unknown access level");
|
|
}
|
|
|
|
AccessScope
|
|
ValueDecl::getFormalAccessScope(const DeclContext *useDC,
|
|
bool treatUsableFromInlineAsPublic) const {
|
|
return getAccessScopeForFormalAccess(this, getFormalAccess(), useDC,
|
|
treatUsableFromInlineAsPublic);
|
|
}
|
|
|
|
/// Checks if \p VD may be used from \p useDC, taking \@testable imports into
|
|
/// account.
|
|
///
|
|
/// Whenever the enclosing context of \p VD is usable from \p useDC, this
|
|
/// should compute the same result as checkAccess, below, but more slowly.
|
|
///
|
|
/// See ValueDecl::isAccessibleFrom for a description of \p forConformance.
|
|
static bool checkAccessUsingAccessScopes(const DeclContext *useDC,
|
|
const ValueDecl *VD,
|
|
AccessLevel access,
|
|
bool includeInlineable) {
|
|
if (VD->getASTContext().isAccessControlDisabled())
|
|
return true;
|
|
|
|
AccessScope accessScope = getAccessScopeForFormalAccess(
|
|
VD, access, useDC,
|
|
/*treatUsableFromInlineAsPublic*/ includeInlineable);
|
|
if (accessScope.getDeclContext() == useDC) return true;
|
|
if (!AccessScope(useDC).isChildOf(accessScope)) return false;
|
|
|
|
// Check SPI access
|
|
if (!useDC || !VD->isSPI()) return true;
|
|
auto useSF = dyn_cast<SourceFile>(useDC->getModuleScopeContext());
|
|
return !useSF || useSF->isImportedAsSPI(VD) ||
|
|
VD->getDeclContext()->getParentModule() == useDC->getParentModule();
|
|
}
|
|
|
|
/// Checks if \p VD may be used from \p useDC, taking \@testable and \@_spi
|
|
/// imports into account.
|
|
///
|
|
/// When \p access is the same as `VD->getFormalAccess()` and the enclosing
|
|
/// context of \p VD is usable from \p useDC, this ought to be the same as
|
|
/// getting the AccessScope for `VD` and checking if \p useDC is within it.
|
|
/// However, there's a source compatibility hack around protocol extensions
|
|
/// that makes it not quite the same.
|
|
///
|
|
/// See ValueDecl::isAccessibleFrom for a description of \p forConformance.
|
|
static bool checkAccess(const DeclContext *useDC, const ValueDecl *VD,
|
|
bool forConformance,
|
|
bool includeInlineable,
|
|
llvm::function_ref<AccessLevel()> getAccessLevel) {
|
|
if (VD->getASTContext().isAccessControlDisabled())
|
|
return true;
|
|
|
|
auto access = getAccessLevel();
|
|
auto *sourceDC = VD->getDeclContext();
|
|
|
|
// Preserve "fast path" behavior for everything inside
|
|
// protocol extensions and operators, otherwise allow access
|
|
// check declarations inside inaccessible members via slower
|
|
// access scope based check, which is helpful for diagnostics.
|
|
if (!(sourceDC->getSelfProtocolDecl() || VD->isOperator()))
|
|
return checkAccessUsingAccessScopes(useDC, VD, access, includeInlineable);
|
|
|
|
if (!forConformance) {
|
|
if (auto *proto = sourceDC->getSelfProtocolDecl()) {
|
|
// FIXME: Swift 4.1 allowed accessing protocol extension methods that were
|
|
// marked 'public' if the protocol was '@_versioned' (now
|
|
// '@usableFromInline'). Which works at the ABI level, so let's keep
|
|
// supporting that here by explicitly checking for it.
|
|
if (access == AccessLevel::Public &&
|
|
proto->getFormalAccess() == AccessLevel::Internal &&
|
|
proto->isUsableFromInline()) {
|
|
return true;
|
|
}
|
|
|
|
// Skip the fast path below and just compare access scopes.
|
|
return checkAccessUsingAccessScopes(useDC, VD, access, includeInlineable);
|
|
}
|
|
}
|
|
|
|
// Fast path: assume that the client context already has access to our parent
|
|
// DeclContext, and only check what might be different about this declaration.
|
|
if (!useDC)
|
|
return access >= AccessLevel::Public;
|
|
|
|
switch (access) {
|
|
case AccessLevel::Private:
|
|
if (useDC != sourceDC) {
|
|
auto *useSF = dyn_cast<SourceFile>(useDC->getModuleScopeContext());
|
|
if (useSF && useSF->hasTestableOrPrivateImport(access, VD))
|
|
return true;
|
|
}
|
|
return (useDC == sourceDC ||
|
|
AccessScope::allowsPrivateAccess(useDC, sourceDC));
|
|
case AccessLevel::FilePrivate:
|
|
if (useDC->getModuleScopeContext() != sourceDC->getModuleScopeContext()) {
|
|
auto *useSF = dyn_cast<SourceFile>(useDC->getModuleScopeContext());
|
|
return useSF && useSF->hasTestableOrPrivateImport(access, VD);
|
|
}
|
|
return true;
|
|
case AccessLevel::Internal: {
|
|
const ModuleDecl *sourceModule = sourceDC->getParentModule();
|
|
const DeclContext *useFile = useDC->getModuleScopeContext();
|
|
if (useFile->getParentModule() == sourceModule)
|
|
return true;
|
|
auto *useSF = dyn_cast<SourceFile>(useFile);
|
|
return useSF && useSF->hasTestableOrPrivateImport(access, sourceModule);
|
|
}
|
|
case AccessLevel::Public:
|
|
case AccessLevel::Open:
|
|
return true;
|
|
}
|
|
llvm_unreachable("bad access level");
|
|
}
|
|
|
|
bool ValueDecl::isAccessibleFrom(const DeclContext *useDC,
|
|
bool forConformance,
|
|
bool allowUsableFromInline) const {
|
|
return checkAccess(useDC, this, forConformance, allowUsableFromInline,
|
|
[&]() { return getFormalAccess(); });
|
|
}
|
|
|
|
bool AbstractStorageDecl::isSetterAccessibleFrom(const DeclContext *DC,
|
|
bool forConformance) const {
|
|
assert(isSettable(DC));
|
|
|
|
// If a stored property does not have a setter, it is still settable from the
|
|
// designated initializer constructor. In this case, don't check setter
|
|
// access; it is not set.
|
|
if (hasStorage() && !isSettable(nullptr))
|
|
return true;
|
|
|
|
if (isa<ParamDecl>(this))
|
|
return true;
|
|
|
|
return checkAccess(DC, this, forConformance, /*includeInlineable*/ false,
|
|
[&]() { return getSetterFormalAccess(); });
|
|
}
|
|
|
|
void ValueDecl::copyFormalAccessFrom(const ValueDecl *source,
|
|
bool sourceIsParentContext) {
|
|
assert(!hasAccess());
|
|
|
|
AccessLevel access = source->getFormalAccess();
|
|
|
|
// To make something have the same access as a 'private' parent, it has to
|
|
// be 'fileprivate' or greater.
|
|
if (sourceIsParentContext && access == AccessLevel::Private)
|
|
access = AccessLevel::FilePrivate;
|
|
|
|
// Only certain declarations can be 'open'.
|
|
if (access == AccessLevel::Open && !isPotentiallyOverridable()) {
|
|
assert(!isa<ClassDecl>(this) &&
|
|
"copying 'open' onto a class has complications");
|
|
access = AccessLevel::Public;
|
|
}
|
|
|
|
setAccess(access);
|
|
|
|
// Inherit the @usableFromInline attribute.
|
|
if (source->getAttrs().hasAttribute<UsableFromInlineAttr>() &&
|
|
!getAttrs().hasAttribute<UsableFromInlineAttr>() &&
|
|
!getAttrs().hasAttribute<InlinableAttr>() &&
|
|
DeclAttribute::canAttributeAppearOnDecl(DAK_UsableFromInline, this)) {
|
|
auto &ctx = getASTContext();
|
|
auto *clonedAttr = new (ctx) UsableFromInlineAttr(/*implicit=*/true);
|
|
getAttrs().add(clonedAttr);
|
|
}
|
|
}
|
|
|
|
Type TypeDecl::getDeclaredInterfaceType() const {
|
|
if (auto *NTD = dyn_cast<NominalTypeDecl>(this))
|
|
return NTD->getDeclaredInterfaceType();
|
|
|
|
if (auto *ATD = dyn_cast<AssociatedTypeDecl>(this)) {
|
|
auto &ctx = getASTContext();
|
|
auto selfTy = getDeclContext()->getSelfInterfaceType();
|
|
if (!selfTy)
|
|
return ErrorType::get(ctx);
|
|
return DependentMemberType::get(
|
|
selfTy, const_cast<AssociatedTypeDecl *>(ATD));
|
|
}
|
|
|
|
return getInterfaceType()->getMetatypeInstanceType();
|
|
}
|
|
|
|
int TypeDecl::compare(const TypeDecl *type1, const TypeDecl *type2) {
|
|
// Order based on the enclosing declaration.
|
|
auto dc1 = type1->getDeclContext();
|
|
auto dc2 = type2->getDeclContext();
|
|
|
|
// Prefer lower depths.
|
|
auto depth1 = dc1->getSemanticDepth();
|
|
auto depth2 = dc2->getSemanticDepth();
|
|
if (depth1 != depth2)
|
|
return depth1 < depth2 ? -1 : +1;
|
|
|
|
// Prefer module names earlier in the alphabet.
|
|
if (dc1->isModuleScopeContext() && dc2->isModuleScopeContext()) {
|
|
auto module1 = dc1->getParentModule();
|
|
auto module2 = dc2->getParentModule();
|
|
if (int result = module1->getName().str().compare(module2->getName().str()))
|
|
return result;
|
|
}
|
|
|
|
auto nominal1 = dc1->getSelfNominalTypeDecl();
|
|
auto nominal2 = dc2->getSelfNominalTypeDecl();
|
|
if (static_cast<bool>(nominal1) != static_cast<bool>(nominal2)) {
|
|
return static_cast<bool>(nominal1) ? -1 : +1;
|
|
}
|
|
if (nominal1 && nominal2) {
|
|
if (int result = compare(nominal1, nominal2))
|
|
return result;
|
|
}
|
|
|
|
if (int result = type1->getBaseIdentifier().str().compare(
|
|
type2->getBaseIdentifier().str()))
|
|
return result;
|
|
|
|
// Error case: two type declarations that cannot be distinguished.
|
|
if (type1 < type2)
|
|
return -1;
|
|
if (type1 > type2)
|
|
return +1;
|
|
return 0;
|
|
}
|
|
|
|
bool NominalTypeDecl::isFormallyResilient() const {
|
|
// Private and (unversioned) internal types always have a
|
|
// fixed layout.
|
|
if (!getFormalAccessScope(/*useDC=*/nullptr,
|
|
/*treatUsableFromInlineAsPublic=*/true).isPublic())
|
|
return false;
|
|
|
|
// Check for an explicit @_fixed_layout or @frozen attribute.
|
|
if (getAttrs().hasAttribute<FixedLayoutAttr>() ||
|
|
getAttrs().hasAttribute<FrozenAttr>()) {
|
|
return false;
|
|
}
|
|
|
|
// Structs and enums imported from C *always* have a fixed layout.
|
|
// We know their size, and pass them as values in SIL and IRGen.
|
|
if (hasClangNode())
|
|
return false;
|
|
|
|
// @objc enums and protocols always have a fixed layout.
|
|
if ((isa<EnumDecl>(this) || isa<ProtocolDecl>(this)) && isObjC())
|
|
return false;
|
|
|
|
// Otherwise, the declaration behaves as if it was accessed via indirect
|
|
// "resilient" interfaces, even if the module is not built with resilience.
|
|
return true;
|
|
}
|
|
|
|
bool NominalTypeDecl::isResilient() const {
|
|
if (!isFormallyResilient())
|
|
return false;
|
|
|
|
return getModuleContext()->isResilient();
|
|
}
|
|
|
|
static bool isOriginallyDefinedIn(const Decl *D, const ModuleDecl* MD) {
|
|
if (!MD)
|
|
return false;
|
|
if (D->getAlternateModuleName().empty())
|
|
return false;
|
|
return D->getAlternateModuleName() == MD->getName().str();
|
|
}
|
|
|
|
bool NominalTypeDecl::isResilient(ModuleDecl *M,
|
|
ResilienceExpansion expansion) const {
|
|
switch (expansion) {
|
|
case ResilienceExpansion::Minimal:
|
|
return isResilient();
|
|
case ResilienceExpansion::Maximal:
|
|
// We consider this decl belongs to the module either it's currently
|
|
// defined in this module or it's originally defined in this module, which
|
|
// is specified by @_originallyDefinedIn
|
|
return M != getModuleContext() && !isOriginallyDefinedIn(this, M) &&
|
|
isResilient();
|
|
}
|
|
llvm_unreachable("bad resilience expansion");
|
|
}
|
|
|
|
enum class DeclTypeKind : unsigned {
|
|
DeclaredType,
|
|
DeclaredInterfaceType
|
|
};
|
|
|
|
static Type computeNominalType(NominalTypeDecl *decl, DeclTypeKind kind) {
|
|
ASTContext &ctx = decl->getASTContext();
|
|
|
|
// If `decl` is a nested type, find the parent type.
|
|
Type ParentTy;
|
|
DeclContext *dc = decl->getDeclContext();
|
|
if (!isa<ProtocolDecl>(decl) && dc->isTypeContext()) {
|
|
switch (kind) {
|
|
case DeclTypeKind::DeclaredType: {
|
|
if (auto *nominal = dc->getSelfNominalTypeDecl())
|
|
ParentTy = nominal->getDeclaredType();
|
|
break;
|
|
}
|
|
case DeclTypeKind::DeclaredInterfaceType:
|
|
ParentTy = dc->getDeclaredInterfaceType();
|
|
if (ParentTy->is<ErrorType>())
|
|
ParentTy = Type();
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!isa<ProtocolDecl>(decl) && decl->getGenericParams()) {
|
|
switch (kind) {
|
|
case DeclTypeKind::DeclaredType:
|
|
return UnboundGenericType::get(decl, ParentTy, ctx);
|
|
case DeclTypeKind::DeclaredInterfaceType: {
|
|
// Note that here, we need to be able to produce a type
|
|
// before the decl has been validated, so we rely on
|
|
// the generic parameter list directly instead of looking
|
|
// at the signature.
|
|
SmallVector<Type, 4> args;
|
|
for (auto param : decl->getGenericParams()->getParams())
|
|
args.push_back(param->getDeclaredInterfaceType());
|
|
|
|
return BoundGenericType::get(decl, ParentTy, args);
|
|
}
|
|
}
|
|
|
|
llvm_unreachable("Unhandled DeclTypeKind in switch.");
|
|
} else {
|
|
return NominalType::get(decl, ParentTy, ctx);
|
|
}
|
|
}
|
|
|
|
Type NominalTypeDecl::getDeclaredType() const {
|
|
if (DeclaredTy)
|
|
return DeclaredTy;
|
|
|
|
auto *decl = const_cast<NominalTypeDecl *>(this);
|
|
decl->DeclaredTy = computeNominalType(decl, DeclTypeKind::DeclaredType);
|
|
return DeclaredTy;
|
|
}
|
|
|
|
Type NominalTypeDecl::getDeclaredInterfaceType() const {
|
|
if (DeclaredInterfaceTy)
|
|
return DeclaredInterfaceTy;
|
|
|
|
auto *decl = const_cast<NominalTypeDecl *>(this);
|
|
decl->DeclaredInterfaceTy = computeNominalType(decl,
|
|
DeclTypeKind::DeclaredInterfaceType);
|
|
return DeclaredInterfaceTy;
|
|
}
|
|
|
|
void NominalTypeDecl::prepareExtensions() {
|
|
// Types in local contexts can't have extensions
|
|
if (getLocalContext() != nullptr) {
|
|
return;
|
|
}
|
|
|
|
auto &context = Decl::getASTContext();
|
|
|
|
// If our list of extensions is out of date, update it now.
|
|
if (context.getCurrentGeneration() > ExtensionGeneration) {
|
|
unsigned previousGeneration = ExtensionGeneration;
|
|
ExtensionGeneration = context.getCurrentGeneration();
|
|
context.loadExtensions(this, previousGeneration);
|
|
}
|
|
}
|
|
|
|
ExtensionRange NominalTypeDecl::getExtensions() {
|
|
prepareExtensions();
|
|
return ExtensionRange(ExtensionIterator(FirstExtension), ExtensionIterator());
|
|
}
|
|
|
|
void NominalTypeDecl::addExtension(ExtensionDecl *extension) {
|
|
assert(!extension->alreadyBoundToNominal() && "Already added extension");
|
|
extension->NextExtension.setInt(true);
|
|
|
|
// First extension; set both first and last.
|
|
if (!FirstExtension) {
|
|
FirstExtension = extension;
|
|
LastExtension = extension;
|
|
|
|
addedExtension(extension);
|
|
return;
|
|
}
|
|
|
|
// Add to the end of the list.
|
|
LastExtension->NextExtension.setPointer(extension);
|
|
LastExtension = extension;
|
|
|
|
addedExtension(extension);
|
|
}
|
|
|
|
ArrayRef<VarDecl *> NominalTypeDecl::getStoredProperties() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<NominalTypeDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator,
|
|
StoredPropertiesRequest{mutableThis},
|
|
{});
|
|
}
|
|
|
|
ArrayRef<Decl *>
|
|
NominalTypeDecl::getStoredPropertiesAndMissingMemberPlaceholders() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<NominalTypeDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator,
|
|
StoredPropertiesAndMissingMembersRequest{mutableThis},
|
|
{});
|
|
}
|
|
|
|
bool NominalTypeDecl::isOptionalDecl() const {
|
|
return this == getASTContext().getOptionalDecl();
|
|
}
|
|
|
|
Optional<KeyPathTypeKind> NominalTypeDecl::getKeyPathTypeKind() const {
|
|
auto &ctx = getASTContext();
|
|
#define CASE(NAME) if (this == ctx.get##NAME##Decl()) return KPTK_##NAME;
|
|
CASE(KeyPath)
|
|
CASE(WritableKeyPath)
|
|
CASE(ReferenceWritableKeyPath)
|
|
CASE(AnyKeyPath)
|
|
CASE(PartialKeyPath)
|
|
#undef CASE
|
|
return None;
|
|
}
|
|
|
|
PropertyWrapperTypeInfo NominalTypeDecl::getPropertyWrapperTypeInfo() const {
|
|
ASTContext &ctx = getASTContext();
|
|
auto mutableThis = const_cast<NominalTypeDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
PropertyWrapperTypeInfoRequest{mutableThis},
|
|
PropertyWrapperTypeInfo());
|
|
}
|
|
|
|
GenericTypeDecl::GenericTypeDecl(DeclKind K, DeclContext *DC,
|
|
Identifier name, SourceLoc nameLoc,
|
|
ArrayRef<TypeLoc> inherited,
|
|
GenericParamList *GenericParams) :
|
|
GenericContext(DeclContextKind::GenericTypeDecl, DC, GenericParams),
|
|
TypeDecl(K, DC, name, nameLoc, inherited) {}
|
|
|
|
TypeAliasDecl::TypeAliasDecl(SourceLoc TypeAliasLoc, SourceLoc EqualLoc,
|
|
Identifier Name, SourceLoc NameLoc,
|
|
GenericParamList *GenericParams, DeclContext *DC)
|
|
: GenericTypeDecl(DeclKind::TypeAlias, DC, Name, NameLoc, {}, GenericParams),
|
|
TypeAliasLoc(TypeAliasLoc), EqualLoc(EqualLoc) {
|
|
Bits.TypeAliasDecl.IsCompatibilityAlias = false;
|
|
Bits.TypeAliasDecl.IsDebuggerAlias = false;
|
|
}
|
|
|
|
SourceRange TypeAliasDecl::getSourceRange() const {
|
|
auto TrailingWhereClauseSourceRange = getGenericTrailingWhereClauseSourceRange();
|
|
if (TrailingWhereClauseSourceRange.isValid())
|
|
return { TypeAliasLoc, TrailingWhereClauseSourceRange.End };
|
|
if (UnderlyingTy.hasLocation())
|
|
return { TypeAliasLoc, UnderlyingTy.getSourceRange().End };
|
|
if (TypeEndLoc.isValid())
|
|
return { TypeAliasLoc, TypeEndLoc };
|
|
return { TypeAliasLoc, getNameLoc() };
|
|
}
|
|
|
|
Type TypeAliasDecl::getUnderlyingType() const {
|
|
auto &ctx = getASTContext();
|
|
if (auto type = evaluateOrDefault(ctx.evaluator,
|
|
UnderlyingTypeRequest{const_cast<TypeAliasDecl *>(this)},
|
|
Type()))
|
|
return type;
|
|
return ErrorType::get(ctx);
|
|
}
|
|
|
|
void TypeAliasDecl::setUnderlyingType(Type underlying) {
|
|
// lldb creates global typealiases containing archetypes
|
|
// sometimes...
|
|
if (underlying->hasArchetype() && isGenericContext())
|
|
underlying = underlying->mapTypeOutOfContext();
|
|
getASTContext().evaluator.cacheOutput(
|
|
StructuralTypeRequest{const_cast<TypeAliasDecl *>(this)},
|
|
std::move(underlying));
|
|
getASTContext().evaluator.cacheOutput(
|
|
UnderlyingTypeRequest{const_cast<TypeAliasDecl *>(this)},
|
|
std::move(underlying));
|
|
}
|
|
|
|
UnboundGenericType *TypeAliasDecl::getUnboundGenericType() const {
|
|
assert(getGenericParams());
|
|
|
|
Type parentTy;
|
|
auto parentDC = getDeclContext();
|
|
if (auto nominal = parentDC->getSelfNominalTypeDecl())
|
|
parentTy = nominal->getDeclaredType();
|
|
|
|
return UnboundGenericType::get(
|
|
const_cast<TypeAliasDecl *>(this),
|
|
parentTy, getASTContext());
|
|
}
|
|
|
|
Type TypeAliasDecl::getStructuralType() const {
|
|
auto &ctx = getASTContext();
|
|
if (auto type = evaluateOrDefault(
|
|
ctx.evaluator,
|
|
StructuralTypeRequest{const_cast<TypeAliasDecl *>(this)},
|
|
Type()))
|
|
return type;
|
|
return ErrorType::get(ctx);
|
|
}
|
|
|
|
Type AbstractTypeParamDecl::getSuperclass() const {
|
|
auto *genericEnv = getDeclContext()->getGenericEnvironmentOfContext();
|
|
assert(genericEnv != nullptr && "Too much circularity");
|
|
|
|
auto contextTy = genericEnv->mapTypeIntoContext(getDeclaredInterfaceType());
|
|
if (auto *archetype = contextTy->getAs<ArchetypeType>())
|
|
return archetype->getSuperclass();
|
|
|
|
// FIXME: Assert that this is never queried.
|
|
return nullptr;
|
|
}
|
|
|
|
ArrayRef<ProtocolDecl *>
|
|
AbstractTypeParamDecl::getConformingProtocols() const {
|
|
auto *genericEnv = getDeclContext()->getGenericEnvironmentOfContext();
|
|
assert(genericEnv != nullptr && "Too much circularity");
|
|
|
|
auto contextTy = genericEnv->mapTypeIntoContext(getDeclaredInterfaceType());
|
|
if (auto *archetype = contextTy->getAs<ArchetypeType>())
|
|
return archetype->getConformsTo();
|
|
|
|
// FIXME: Assert that this is never queried.
|
|
return { };
|
|
}
|
|
|
|
GenericTypeParamDecl::GenericTypeParamDecl(DeclContext *dc, Identifier name,
|
|
SourceLoc nameLoc,
|
|
unsigned depth, unsigned index)
|
|
: AbstractTypeParamDecl(DeclKind::GenericTypeParam, dc, name, nameLoc) {
|
|
Bits.GenericTypeParamDecl.Depth = depth;
|
|
assert(Bits.GenericTypeParamDecl.Depth == depth && "Truncation");
|
|
Bits.GenericTypeParamDecl.Index = index;
|
|
assert(Bits.GenericTypeParamDecl.Index == index && "Truncation");
|
|
auto &ctx = dc->getASTContext();
|
|
auto type = new (ctx, AllocationArena::Permanent) GenericTypeParamType(this);
|
|
setInterfaceType(MetatypeType::get(type, ctx));
|
|
}
|
|
|
|
SourceRange GenericTypeParamDecl::getSourceRange() const {
|
|
SourceLoc endLoc = getNameLoc();
|
|
|
|
if (!getInherited().empty()) {
|
|
endLoc = getInherited().back().getSourceRange().End;
|
|
}
|
|
return SourceRange(getNameLoc(), endLoc);
|
|
}
|
|
|
|
AssociatedTypeDecl::AssociatedTypeDecl(DeclContext *dc, SourceLoc keywordLoc,
|
|
Identifier name, SourceLoc nameLoc,
|
|
TypeRepr *defaultDefinition,
|
|
TrailingWhereClause *trailingWhere)
|
|
: AbstractTypeParamDecl(DeclKind::AssociatedType, dc, name, nameLoc),
|
|
KeywordLoc(keywordLoc), DefaultDefinition(defaultDefinition),
|
|
TrailingWhere(trailingWhere) {
|
|
}
|
|
|
|
AssociatedTypeDecl::AssociatedTypeDecl(DeclContext *dc, SourceLoc keywordLoc,
|
|
Identifier name, SourceLoc nameLoc,
|
|
TrailingWhereClause *trailingWhere,
|
|
LazyMemberLoader *definitionResolver,
|
|
uint64_t resolverData)
|
|
: AbstractTypeParamDecl(DeclKind::AssociatedType, dc, name, nameLoc),
|
|
KeywordLoc(keywordLoc), DefaultDefinition(nullptr),
|
|
TrailingWhere(trailingWhere), Resolver(definitionResolver),
|
|
ResolverContextData(resolverData) {
|
|
assert(Resolver && "missing resolver");
|
|
}
|
|
|
|
Type AssociatedTypeDecl::getDefaultDefinitionType() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
DefaultDefinitionTypeRequest{const_cast<AssociatedTypeDecl *>(this)},
|
|
Type());
|
|
}
|
|
|
|
SourceRange AssociatedTypeDecl::getSourceRange() const {
|
|
SourceLoc endLoc;
|
|
if (auto TWC = getTrailingWhereClause()) {
|
|
endLoc = TWC->getSourceRange().End;
|
|
} else if (auto defaultDefinition = getDefaultDefinitionTypeRepr()) {
|
|
endLoc = defaultDefinition->getEndLoc();
|
|
} else if (!getInherited().empty()) {
|
|
endLoc = getInherited().back().getSourceRange().End;
|
|
} else {
|
|
endLoc = getNameLoc();
|
|
}
|
|
return SourceRange(KeywordLoc, endLoc);
|
|
}
|
|
|
|
llvm::TinyPtrVector<AssociatedTypeDecl *>
|
|
AssociatedTypeDecl::getOverriddenDecls() const {
|
|
// FIXME: Performance hack because we end up looking at the overridden
|
|
// declarations of an associated type a *lot*.
|
|
OverriddenDeclsRequest request{const_cast<AssociatedTypeDecl *>(this)};
|
|
llvm::TinyPtrVector<ValueDecl *> overridden;
|
|
if (auto cached = request.getCachedResult())
|
|
overridden = std::move(*cached);
|
|
else
|
|
overridden = AbstractTypeParamDecl::getOverriddenDecls();
|
|
|
|
llvm::TinyPtrVector<AssociatedTypeDecl *> assocTypes;
|
|
for (auto decl : overridden) {
|
|
assocTypes.push_back(cast<AssociatedTypeDecl>(decl));
|
|
}
|
|
return assocTypes;
|
|
}
|
|
|
|
namespace {
|
|
static AssociatedTypeDecl *getAssociatedTypeAnchor(
|
|
const AssociatedTypeDecl *ATD,
|
|
llvm::SmallSet<const AssociatedTypeDecl *, 8> &searched) {
|
|
auto overridden = ATD->getOverriddenDecls();
|
|
|
|
// If this declaration does not override any other declarations, it's
|
|
// the anchor.
|
|
if (overridden.empty()) return const_cast<AssociatedTypeDecl *>(ATD);
|
|
|
|
// Find the best anchor among the anchors of the overridden decls and avoid
|
|
// reentrancy when erroneous cyclic protocols exist.
|
|
AssociatedTypeDecl *bestAnchor = nullptr;
|
|
for (auto assocType : overridden) {
|
|
if (!searched.insert(assocType).second)
|
|
continue;
|
|
auto anchor = getAssociatedTypeAnchor(assocType, searched);
|
|
if (!anchor)
|
|
continue;
|
|
if (!bestAnchor || AbstractTypeParamDecl::compare(anchor, bestAnchor) < 0)
|
|
bestAnchor = anchor;
|
|
}
|
|
|
|
return bestAnchor;
|
|
}
|
|
};
|
|
|
|
AssociatedTypeDecl *AssociatedTypeDecl::getAssociatedTypeAnchor() const {
|
|
llvm::SmallSet<const AssociatedTypeDecl *, 8> searched;
|
|
return ::getAssociatedTypeAnchor(this, searched);
|
|
}
|
|
|
|
EnumDecl::EnumDecl(SourceLoc EnumLoc,
|
|
Identifier Name, SourceLoc NameLoc,
|
|
ArrayRef<TypeLoc> Inherited,
|
|
GenericParamList *GenericParams, DeclContext *Parent)
|
|
: NominalTypeDecl(DeclKind::Enum, Parent, Name, NameLoc, Inherited,
|
|
GenericParams),
|
|
EnumLoc(EnumLoc)
|
|
{
|
|
Bits.EnumDecl.HasAssociatedValues
|
|
= static_cast<unsigned>(AssociatedValueCheck::Unchecked);
|
|
Bits.EnumDecl.HasAnyUnavailableValues
|
|
= false;
|
|
}
|
|
|
|
Type EnumDecl::getRawType() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, EnumRawTypeRequest{const_cast<EnumDecl *>(this)}, Type());
|
|
}
|
|
|
|
void EnumDecl::setRawType(Type rawType) {
|
|
getASTContext().evaluator.cacheOutput(EnumRawTypeRequest{this},
|
|
std::move(rawType));
|
|
}
|
|
|
|
StructDecl::StructDecl(SourceLoc StructLoc, Identifier Name, SourceLoc NameLoc,
|
|
ArrayRef<TypeLoc> Inherited,
|
|
GenericParamList *GenericParams, DeclContext *Parent)
|
|
: NominalTypeDecl(DeclKind::Struct, Parent, Name, NameLoc, Inherited,
|
|
GenericParams),
|
|
StructLoc(StructLoc)
|
|
{
|
|
Bits.StructDecl.HasUnreferenceableStorage = false;
|
|
Bits.StructDecl.IsCxxNonTrivial = false;
|
|
}
|
|
|
|
bool NominalTypeDecl::hasMemberwiseInitializer() const {
|
|
// Currently only structs can have memberwise initializers.
|
|
auto *sd = dyn_cast<StructDecl>(this);
|
|
if (!sd)
|
|
return false;
|
|
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<StructDecl *>(sd);
|
|
return evaluateOrDefault(ctx.evaluator, HasMemberwiseInitRequest{mutableThis},
|
|
false);
|
|
}
|
|
|
|
ConstructorDecl *NominalTypeDecl::getMemberwiseInitializer() const {
|
|
if (!hasMemberwiseInitializer())
|
|
return nullptr;
|
|
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<NominalTypeDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, SynthesizeMemberwiseInitRequest{mutableThis}, nullptr);
|
|
}
|
|
|
|
ConstructorDecl *NominalTypeDecl::getEffectiveMemberwiseInitializer() {
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<NominalTypeDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
ResolveEffectiveMemberwiseInitRequest{mutableThis},
|
|
nullptr);
|
|
}
|
|
|
|
bool NominalTypeDecl::hasDefaultInitializer() const {
|
|
// Currently only structs and classes can have default initializers.
|
|
if (!isa<StructDecl>(this) && !isa<ClassDecl>(this))
|
|
return false;
|
|
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<NominalTypeDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator, HasDefaultInitRequest{mutableThis},
|
|
false);
|
|
}
|
|
|
|
bool NominalTypeDecl::isTypeErasedGenericClass() const {
|
|
// ObjC classes are type erased.
|
|
// TODO: Unless they have magic methods...
|
|
if (auto clas = dyn_cast<ClassDecl>(this))
|
|
return clas->hasClangNode() && clas->isGenericContext();
|
|
return false;
|
|
}
|
|
|
|
ConstructorDecl *NominalTypeDecl::getDefaultInitializer() const {
|
|
if (!hasDefaultInitializer())
|
|
return nullptr;
|
|
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<NominalTypeDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
SynthesizeDefaultInitRequest{mutableThis}, nullptr);
|
|
}
|
|
|
|
void NominalTypeDecl::synthesizeSemanticMembersIfNeeded(DeclName member) {
|
|
// Silently break cycles here because we can't be sure when and where a
|
|
// request to synthesize will come from yet.
|
|
// FIXME: rdar://56844567
|
|
if (Bits.NominalTypeDecl.IsComputingSemanticMembers)
|
|
return;
|
|
|
|
Bits.NominalTypeDecl.IsComputingSemanticMembers = true;
|
|
SWIFT_DEFER { Bits.NominalTypeDecl.IsComputingSemanticMembers = false; };
|
|
|
|
auto baseName = member.getBaseName();
|
|
auto &Context = getASTContext();
|
|
Optional<ImplicitMemberAction> action = None;
|
|
if (baseName == DeclBaseName::createConstructor())
|
|
action.emplace(ImplicitMemberAction::ResolveImplicitInit);
|
|
|
|
if (member.isSimpleName() && !baseName.isSpecial()) {
|
|
if (baseName.getIdentifier() == getASTContext().Id_CodingKeys) {
|
|
action.emplace(ImplicitMemberAction::ResolveCodingKeys);
|
|
}
|
|
} else {
|
|
auto argumentNames = member.getArgumentNames();
|
|
if (!member.isCompoundName() || argumentNames.size() == 1) {
|
|
if (baseName == DeclBaseName::createConstructor() &&
|
|
(member.isSimpleName() || argumentNames.front() == Context.Id_from)) {
|
|
action.emplace(ImplicitMemberAction::ResolveDecodable);
|
|
} else if (!baseName.isSpecial() &&
|
|
baseName.getIdentifier() == Context.Id_encode &&
|
|
(member.isSimpleName() ||
|
|
argumentNames.front() == Context.Id_to)) {
|
|
action.emplace(ImplicitMemberAction::ResolveEncodable);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (auto actionToTake = action) {
|
|
(void)evaluateOrDefault(Context.evaluator,
|
|
ResolveImplicitMemberRequest{this, actionToTake.getValue()}, {});
|
|
}
|
|
}
|
|
|
|
VarDecl *NominalTypeDecl::getGlobalActorInstance() const {
|
|
auto mutableThis = const_cast<NominalTypeDecl *>(this);
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
GlobalActorInstanceRequest{mutableThis},
|
|
nullptr);
|
|
}
|
|
|
|
ClassDecl::ClassDecl(SourceLoc ClassLoc, Identifier Name, SourceLoc NameLoc,
|
|
ArrayRef<TypeLoc> Inherited,
|
|
GenericParamList *GenericParams, DeclContext *Parent,
|
|
bool isActor)
|
|
: NominalTypeDecl(DeclKind::Class, Parent, Name, NameLoc, Inherited,
|
|
GenericParams),
|
|
ClassLoc(ClassLoc) {
|
|
Bits.ClassDecl.InheritsSuperclassInits = 0;
|
|
Bits.ClassDecl.ComputedInheritsSuperclassInits = 0;
|
|
Bits.ClassDecl.RawForeignKind = 0;
|
|
Bits.ClassDecl.HasMissingDesignatedInitializers = 0;
|
|
Bits.ClassDecl.ComputedHasMissingDesignatedInitializers = 0;
|
|
Bits.ClassDecl.HasMissingVTableEntries = 0;
|
|
Bits.ClassDecl.ComputedHasMissingVTableEntries = 0;
|
|
Bits.ClassDecl.IsIncompatibleWithWeakReferences = 0;
|
|
Bits.ClassDecl.IsActor = isActor;
|
|
}
|
|
|
|
bool ClassDecl::hasResilientMetadata() const {
|
|
// Imported classes don't have a vtable, etc, at all.
|
|
if (hasClangNode())
|
|
return false;
|
|
|
|
// If the module is not resilient, neither is the class metadata.
|
|
if (!getModuleContext()->isResilient())
|
|
return false;
|
|
|
|
// If the class is not public, we can't use it outside the module at all.
|
|
if (!getFormalAccessScope(/*useDC=*/nullptr,
|
|
/*treatUsableFromInlineAsPublic=*/true).isPublic())
|
|
return false;
|
|
|
|
// Otherwise we access metadata members, such as vtable entries, resiliently.
|
|
return true;
|
|
}
|
|
|
|
bool ClassDecl::hasResilientMetadata(ModuleDecl *M,
|
|
ResilienceExpansion expansion) const {
|
|
switch (expansion) {
|
|
case ResilienceExpansion::Minimal:
|
|
return hasResilientMetadata();
|
|
case ResilienceExpansion::Maximal:
|
|
return M != getModuleContext() && hasResilientMetadata();
|
|
}
|
|
llvm_unreachable("bad resilience expansion");
|
|
}
|
|
|
|
DestructorDecl *ClassDecl::getDestructor() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
GetDestructorRequest{const_cast<ClassDecl *>(this)},
|
|
nullptr);
|
|
}
|
|
|
|
/// Synthesizer callback for an empty implicit function body.
|
|
static std::pair<BraceStmt *, bool>
|
|
synthesizeEmptyFunctionBody(AbstractFunctionDecl *afd, void *context) {
|
|
ASTContext &ctx = afd->getASTContext();
|
|
return { BraceStmt::create(ctx, afd->getLoc(), { }, afd->getLoc(), true),
|
|
/*isTypeChecked=*/true };
|
|
}
|
|
|
|
DestructorDecl *
|
|
GetDestructorRequest::evaluate(Evaluator &evaluator, ClassDecl *CD) const {
|
|
auto &ctx = CD->getASTContext();
|
|
auto *DD = new (ctx) DestructorDecl(CD->getLoc(), CD);
|
|
|
|
DD->setImplicit();
|
|
|
|
// Synthesize an empty body for the destructor as needed.
|
|
DD->setBodySynthesizer(synthesizeEmptyFunctionBody);
|
|
|
|
// Propagate access control and versioned-ness.
|
|
DD->copyFormalAccessFrom(CD, /*sourceIsParentContext*/true);
|
|
|
|
// Mark DD as ObjC, as all dtors are.
|
|
DD->setIsObjC(ctx.LangOpts.EnableObjCInterop);
|
|
if (ctx.LangOpts.EnableObjCInterop)
|
|
CD->recordObjCMethod(DD, DD->getObjCSelector());
|
|
|
|
// Mark it as synthesized to make its location in getEmittedMembers()
|
|
// deterministic.
|
|
DD->setSynthesized(true);
|
|
|
|
return DD;
|
|
}
|
|
|
|
bool ClassDecl::isActor() const {
|
|
auto mutableThis = const_cast<ClassDecl *>(this);
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
IsActorRequest{mutableThis},
|
|
false);
|
|
}
|
|
|
|
bool ClassDecl::isDefaultActor() const {
|
|
auto mutableThis = const_cast<ClassDecl *>(this);
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
IsDefaultActorRequest{mutableThis},
|
|
false);
|
|
}
|
|
|
|
bool ClassDecl::hasMissingDesignatedInitializers() const {
|
|
return evaluateOrDefault(
|
|
getASTContext().evaluator,
|
|
HasMissingDesignatedInitializersRequest{const_cast<ClassDecl *>(this)},
|
|
false);
|
|
}
|
|
|
|
bool ClassDecl::hasMissingVTableEntries() const {
|
|
if (!Bits.ClassDecl.ComputedHasMissingVTableEntries) {
|
|
auto *mutableThis = const_cast<ClassDecl *>(this);
|
|
mutableThis->Bits.ClassDecl.ComputedHasMissingVTableEntries = 1;
|
|
mutableThis->loadAllMembers();
|
|
}
|
|
|
|
return Bits.ClassDecl.HasMissingVTableEntries;
|
|
}
|
|
|
|
bool ClassDecl::isIncompatibleWithWeakReferences() const {
|
|
if (Bits.ClassDecl.IsIncompatibleWithWeakReferences) {
|
|
return true;
|
|
}
|
|
if (auto superclass = getSuperclassDecl()) {
|
|
return superclass->isIncompatibleWithWeakReferences();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool ClassDecl::inheritsSuperclassInitializers() const {
|
|
// If there's no superclass, there's nothing to inherit.
|
|
if (!getSuperclassDecl())
|
|
return false;
|
|
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<ClassDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, InheritsSuperclassInitializersRequest{mutableThis}, false);
|
|
}
|
|
|
|
AncestryOptions ClassDecl::checkAncestry() const {
|
|
return AncestryOptions(evaluateOrDefault(getASTContext().evaluator,
|
|
ClassAncestryFlagsRequest{const_cast<ClassDecl *>(this)},
|
|
AncestryFlags()));
|
|
}
|
|
|
|
AncestryFlags
|
|
ClassAncestryFlagsRequest::evaluate(Evaluator &evaluator,
|
|
ClassDecl *value) const {
|
|
AncestryOptions result;
|
|
const ClassDecl *CD = value;
|
|
const ClassDecl *PreviousCD = nullptr;
|
|
auto *M = value->getParentModule();
|
|
|
|
do {
|
|
if (CD->isGenericContext())
|
|
result |= AncestryFlags::Generic;
|
|
|
|
// Note: it's OK to check for @objc explicitly instead of calling isObjC()
|
|
// to infer it since we're going to visit every superclass.
|
|
if (CD->getAttrs().hasAttribute<ObjCAttr>())
|
|
result |= AncestryFlags::ObjC;
|
|
|
|
if (CD->getAttrs().hasAttribute<ObjCMembersAttr>())
|
|
result |= AncestryFlags::ObjCMembers;
|
|
|
|
if (CD->hasClangNode()) {
|
|
result |= AncestryFlags::ClangImported;
|
|
|
|
// Inheriting from an ObjC-defined class generally forces the use
|
|
// of the ObjC object model, but certain classes that directly
|
|
// inherit from NSObject can change that.
|
|
if (!PreviousCD ||
|
|
!(CD->isNSObject() && PreviousCD->isNativeNSObjectSubclass()))
|
|
result |= AncestryFlags::ObjCObjectModel;
|
|
}
|
|
|
|
if (CD->hasResilientMetadata())
|
|
result |= AncestryFlags::Resilient;
|
|
|
|
if (CD->hasResilientMetadata(M, ResilienceExpansion::Maximal))
|
|
result |= AncestryFlags::ResilientOther;
|
|
|
|
if (CD->getAttrs().hasAttribute<RequiresStoredPropertyInitsAttr>())
|
|
result |= AncestryFlags::RequiresStoredPropertyInits;
|
|
|
|
PreviousCD = CD;
|
|
CD = CD->getSuperclassDecl();
|
|
} while (CD != nullptr);
|
|
|
|
return AncestryFlags(result.toRaw());
|
|
}
|
|
|
|
void swift::simple_display(llvm::raw_ostream &out, AncestryFlags value) {
|
|
AncestryOptions opts(value);
|
|
out << "{ ";
|
|
// If we have more than one bit set, we need to print the separator.
|
|
bool wantsSeparator = false;
|
|
auto printBit = [&wantsSeparator, &out](bool val, StringRef name) {
|
|
if (wantsSeparator) {
|
|
out << ", ";
|
|
}
|
|
|
|
if (!wantsSeparator) {
|
|
wantsSeparator = true;
|
|
}
|
|
|
|
out << name;
|
|
if (val) {
|
|
out << " = true";
|
|
} else {
|
|
out << " = false";
|
|
}
|
|
};
|
|
printBit(opts.contains(AncestryFlags::ObjC), "ObjC");
|
|
printBit(opts.contains(AncestryFlags::ObjCMembers), "ObjCMembers");
|
|
printBit(opts.contains(AncestryFlags::Generic), "Generic");
|
|
printBit(opts.contains(AncestryFlags::Resilient), "Resilient");
|
|
printBit(opts.contains(AncestryFlags::ResilientOther), "ResilientOther");
|
|
printBit(opts.contains(AncestryFlags::ClangImported), "ClangImported");
|
|
printBit(opts.contains(AncestryFlags::RequiresStoredPropertyInits),
|
|
"RequiresStoredPropertyInits");
|
|
out << " }";
|
|
}
|
|
|
|
bool ClassDecl::isSuperclassOf(ClassDecl *other) const {
|
|
llvm::SmallPtrSet<const ClassDecl *, 8> visited;
|
|
|
|
do {
|
|
if (!visited.insert(other).second)
|
|
break;
|
|
|
|
if (this == other)
|
|
return true;
|
|
|
|
other = other->getSuperclassDecl();
|
|
} while (other != nullptr);
|
|
|
|
return false;
|
|
}
|
|
|
|
ClassDecl::MetaclassKind ClassDecl::getMetaclassKind() const {
|
|
assert(getASTContext().LangOpts.EnableObjCInterop &&
|
|
"querying metaclass kind without objc interop");
|
|
auto objc = checkAncestry(AncestryFlags::ObjC);
|
|
return objc ? MetaclassKind::ObjC : MetaclassKind::SwiftStub;
|
|
}
|
|
|
|
/// Mangle the name of a protocol or class for use in the Objective-C
|
|
/// runtime.
|
|
static StringRef mangleObjCRuntimeName(const NominalTypeDecl *nominal,
|
|
llvm::SmallVectorImpl<char> &buffer) {
|
|
{
|
|
Mangle::ASTMangler Mangler;
|
|
std::string MangledName = Mangler.mangleObjCRuntimeName(nominal);
|
|
|
|
buffer.clear();
|
|
llvm::raw_svector_ostream os(buffer);
|
|
os << MangledName;
|
|
}
|
|
|
|
assert(buffer.size() && "Invalid buffer size");
|
|
return StringRef(buffer.data(), buffer.size());
|
|
}
|
|
|
|
StringRef ClassDecl::getObjCRuntimeName(
|
|
llvm::SmallVectorImpl<char> &buffer) const {
|
|
// If there is a Clang declaration, use it's runtime name.
|
|
if (auto objcClass
|
|
= dyn_cast_or_null<clang::ObjCInterfaceDecl>(getClangDecl()))
|
|
return objcClass->getObjCRuntimeNameAsString();
|
|
|
|
// If there is an 'objc' attribute with a name, use that name.
|
|
if (auto attr = getAttrs().getAttribute<ObjCRuntimeNameAttr>())
|
|
return attr->Name;
|
|
if (auto objc = getAttrs().getAttribute<ObjCAttr>()) {
|
|
if (auto name = objc->getName())
|
|
return name->getString(buffer);
|
|
}
|
|
|
|
// Produce the mangled name for this class.
|
|
return mangleObjCRuntimeName(this, buffer);
|
|
}
|
|
|
|
ArtificialMainKind Decl::getArtificialMainKind() const {
|
|
if (getAttrs().hasAttribute<UIApplicationMainAttr>())
|
|
return ArtificialMainKind::UIApplicationMain;
|
|
if (getAttrs().hasAttribute<NSApplicationMainAttr>())
|
|
return ArtificialMainKind::NSApplicationMain;
|
|
if (isa<FuncDecl>(this))
|
|
return ArtificialMainKind::TypeMain;
|
|
llvm_unreachable("type has no @Main attr?!");
|
|
}
|
|
|
|
static bool isOverridingDecl(const ValueDecl *Derived,
|
|
const ValueDecl *Base) {
|
|
while (Derived) {
|
|
if (Derived == Base)
|
|
return true;
|
|
Derived = Derived->getOverriddenDecl();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static ValueDecl *findOverridingDecl(const ClassDecl *C,
|
|
const ValueDecl *Base) {
|
|
// FIXME: This is extremely inefficient. The SILOptimizer should build a
|
|
// reverse lookup table to answer these types of queries.
|
|
for (auto M : C->getMembers()) {
|
|
if (auto *Derived = dyn_cast<ValueDecl>(M))
|
|
if (::isOverridingDecl(Derived, Base))
|
|
return Derived;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
AbstractFunctionDecl *
|
|
ClassDecl::findOverridingDecl(const AbstractFunctionDecl *Method) const {
|
|
if (auto *Accessor = dyn_cast<AccessorDecl>(Method)) {
|
|
auto *Storage = Accessor->getStorage();
|
|
if (auto *Derived = ::findOverridingDecl(this, Storage)) {
|
|
auto *DerivedStorage = cast<AbstractStorageDecl>(Derived);
|
|
return DerivedStorage->getOpaqueAccessor(Accessor->getAccessorKind());
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
return cast_or_null<AbstractFunctionDecl>(::findOverridingDecl(this, Method));
|
|
}
|
|
|
|
AbstractFunctionDecl *
|
|
ClassDecl::findImplementingMethod(const AbstractFunctionDecl *Method) const {
|
|
// FIXME: This is extremely inefficient. The SILOptimizer should build a
|
|
// reverse lookup table to answer these types of queries.
|
|
const ClassDecl *C = this;
|
|
while (C) {
|
|
if (C == Method->getDeclContext())
|
|
return const_cast<AbstractFunctionDecl *>(Method);
|
|
|
|
if (auto *Derived = C->findOverridingDecl(Method))
|
|
return Derived;
|
|
|
|
// Check the superclass
|
|
C = C->getSuperclassDecl();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool ClassDecl::walkSuperclasses(
|
|
llvm::function_ref<TypeWalker::Action(ClassDecl *)> fn) const {
|
|
|
|
auto *cls = const_cast<ClassDecl *>(this);
|
|
|
|
while (cls) {
|
|
switch (fn(cls)) {
|
|
case TypeWalker::Action::Stop:
|
|
return true;
|
|
case TypeWalker::Action::SkipChildren:
|
|
return false;
|
|
case TypeWalker::Action::Continue:
|
|
cls = cls->getSuperclassDecl();
|
|
continue;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
EnumCaseDecl *EnumCaseDecl::create(SourceLoc CaseLoc,
|
|
ArrayRef<EnumElementDecl *> Elements,
|
|
DeclContext *DC) {
|
|
size_t bytes = totalSizeToAlloc<EnumElementDecl *>(Elements.size());
|
|
void *buf = DC->getASTContext().Allocate(bytes, alignof(EnumCaseDecl));
|
|
return ::new (buf) EnumCaseDecl(CaseLoc, Elements, DC);
|
|
}
|
|
|
|
bool EnumDecl::hasPotentiallyUnavailableCaseValue() const {
|
|
switch (static_cast<AssociatedValueCheck>(Bits.EnumDecl.HasAssociatedValues)) {
|
|
case AssociatedValueCheck::Unchecked:
|
|
// Compute below
|
|
this->hasOnlyCasesWithoutAssociatedValues();
|
|
LLVM_FALLTHROUGH;
|
|
default:
|
|
return static_cast<bool>(Bits.EnumDecl.HasAnyUnavailableValues);
|
|
}
|
|
}
|
|
|
|
bool EnumDecl::hasOnlyCasesWithoutAssociatedValues() const {
|
|
// Check whether we already have a cached answer.
|
|
switch (static_cast<AssociatedValueCheck>(
|
|
Bits.EnumDecl.HasAssociatedValues)) {
|
|
case AssociatedValueCheck::Unchecked:
|
|
// Compute below.
|
|
break;
|
|
|
|
case AssociatedValueCheck::NoAssociatedValues:
|
|
return true;
|
|
|
|
case AssociatedValueCheck::HasAssociatedValues:
|
|
return false;
|
|
}
|
|
for (auto elt : getAllElements()) {
|
|
for (auto Attr : elt->getAttrs()) {
|
|
if (auto AvAttr = dyn_cast<AvailableAttr>(Attr)) {
|
|
if (!AvAttr->isInvalid()) {
|
|
const_cast<EnumDecl*>(this)->Bits.EnumDecl.HasAnyUnavailableValues
|
|
= true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (elt->hasAssociatedValues()) {
|
|
const_cast<EnumDecl*>(this)->Bits.EnumDecl.HasAssociatedValues
|
|
= static_cast<unsigned>(AssociatedValueCheck::HasAssociatedValues);
|
|
return false;
|
|
}
|
|
}
|
|
const_cast<EnumDecl*>(this)->Bits.EnumDecl.HasAssociatedValues
|
|
= static_cast<unsigned>(AssociatedValueCheck::NoAssociatedValues);
|
|
return true;
|
|
}
|
|
|
|
bool EnumDecl::isFormallyExhaustive(const DeclContext *useDC) const {
|
|
// Enums explicitly marked frozen are exhaustive.
|
|
if (getAttrs().hasAttribute<FrozenAttr>())
|
|
return true;
|
|
|
|
// Objective-C enums /not/ marked frozen are /not/ exhaustive.
|
|
// Note: This implicitly holds @objc enums defined in Swift to a higher
|
|
// standard!
|
|
if (hasClangNode())
|
|
return false;
|
|
|
|
// Non-imported enums in non-resilient modules are exhaustive.
|
|
const ModuleDecl *containingModule = getModuleContext();
|
|
if (!containingModule->isResilient())
|
|
return true;
|
|
|
|
// Non-public, non-versioned enums are always exhaustive.
|
|
AccessScope accessScope = getFormalAccessScope(/*useDC*/nullptr,
|
|
/*respectVersioned*/true);
|
|
if (!accessScope.isPublic())
|
|
return true;
|
|
|
|
// All other checks are use-site specific; with no further information, the
|
|
// enum must be treated non-exhaustively.
|
|
if (!useDC)
|
|
return false;
|
|
|
|
// Enums in the same module as the use site are exhaustive /unless/ the use
|
|
// site is inlinable.
|
|
if (useDC->getParentModule() == containingModule)
|
|
if (useDC->getResilienceExpansion() == ResilienceExpansion::Maximal)
|
|
return true;
|
|
|
|
// Testably imported enums are exhaustive, on the grounds that only the author
|
|
// of the original library can import it testably.
|
|
if (auto *useSF = dyn_cast<SourceFile>(useDC->getModuleScopeContext()))
|
|
if (useSF->hasTestableOrPrivateImport(AccessLevel::Internal,
|
|
containingModule))
|
|
return true;
|
|
|
|
// Otherwise, the enum is non-exhaustive.
|
|
return false;
|
|
}
|
|
|
|
bool EnumDecl::isEffectivelyExhaustive(ModuleDecl *M,
|
|
ResilienceExpansion expansion) const {
|
|
// Generated Swift code commits to handling garbage values of @objc enums,
|
|
// whether imported or not, to deal with C's loose rules around enums.
|
|
// This covers both frozen and non-frozen @objc enums.
|
|
if (isObjC())
|
|
return false;
|
|
|
|
// Otherwise, the only non-exhaustive cases are those that don't have a fixed
|
|
// layout.
|
|
assert(isFormallyExhaustive(M) == !isResilient(M,ResilienceExpansion::Maximal)
|
|
&& "ignoring the effects of @inlinable, @testable, and @objc, "
|
|
"these should match up");
|
|
return !isResilient(M, expansion);
|
|
}
|
|
|
|
void EnumDecl::setHasFixedRawValues() {
|
|
SemanticFlags |= OptionSet<EnumDecl::SemanticInfoFlags>{EnumDecl::HasFixedRawValues};
|
|
}
|
|
|
|
bool EnumDecl::hasCircularRawValue() const {
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<EnumDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
HasCircularRawValueRequest{mutableThis}, true);
|
|
}
|
|
|
|
ProtocolDecl::ProtocolDecl(DeclContext *DC, SourceLoc ProtocolLoc,
|
|
SourceLoc NameLoc, Identifier Name,
|
|
ArrayRef<TypeLoc> Inherited,
|
|
TrailingWhereClause *TrailingWhere)
|
|
: NominalTypeDecl(DeclKind::Protocol, DC, Name, NameLoc, Inherited,
|
|
nullptr),
|
|
ProtocolLoc(ProtocolLoc) {
|
|
Bits.ProtocolDecl.RequiresClassValid = false;
|
|
Bits.ProtocolDecl.RequiresClass = false;
|
|
Bits.ProtocolDecl.ExistentialConformsToSelfValid = false;
|
|
Bits.ProtocolDecl.ExistentialConformsToSelf = false;
|
|
Bits.ProtocolDecl.InheritedProtocolsValid = 0;
|
|
Bits.ProtocolDecl.NumRequirementsInSignature = 0;
|
|
Bits.ProtocolDecl.HasMissingRequirements = false;
|
|
Bits.ProtocolDecl.KnownProtocol = 0;
|
|
setTrailingWhereClause(TrailingWhere);
|
|
}
|
|
|
|
bool ProtocolDecl::isMarkerProtocol() const {
|
|
return getAttrs().hasAttribute<MarkerAttr>();
|
|
}
|
|
|
|
ArrayRef<ProtocolDecl *> ProtocolDecl::getInheritedProtocols() const {
|
|
auto *mutThis = const_cast<ProtocolDecl *>(this);
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
InheritedProtocolsRequest{mutThis},
|
|
{});
|
|
}
|
|
|
|
llvm::TinyPtrVector<AssociatedTypeDecl *>
|
|
ProtocolDecl::getAssociatedTypeMembers() const {
|
|
llvm::TinyPtrVector<AssociatedTypeDecl *> result;
|
|
|
|
// Clang-imported protocols never have associated types.
|
|
if (hasClangNode())
|
|
return result;
|
|
|
|
// Deserialized @objc protocols never have associated types.
|
|
if (!getParentSourceFile() && isObjC())
|
|
return result;
|
|
|
|
// Find the associated type declarations.
|
|
for (auto member : getMembers()) {
|
|
if (auto ATD = dyn_cast<AssociatedTypeDecl>(member)) {
|
|
result.push_back(ATD);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
ValueDecl *ProtocolDecl::getSingleRequirement(DeclName name) const {
|
|
auto results = const_cast<ProtocolDecl *>(this)->lookupDirect(name);
|
|
ValueDecl *result = nullptr;
|
|
for (auto candidate : results) {
|
|
if (candidate->getDeclContext() != this ||
|
|
!candidate->isProtocolRequirement())
|
|
continue;
|
|
if (result) {
|
|
// Multiple results.
|
|
return nullptr;
|
|
}
|
|
result = candidate;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
AssociatedTypeDecl *ProtocolDecl::getAssociatedType(Identifier name) const {
|
|
const auto flags = NominalTypeDecl::LookupDirectFlags::IgnoreNewExtensions;
|
|
auto results = const_cast<ProtocolDecl *>(this)->lookupDirect(name, flags);
|
|
for (auto candidate : results) {
|
|
if (candidate->getDeclContext() == this &&
|
|
isa<AssociatedTypeDecl>(candidate)) {
|
|
return cast<AssociatedTypeDecl>(candidate);
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
Type ProtocolDecl::getSuperclass() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
SuperclassTypeRequest{const_cast<ProtocolDecl *>(this),
|
|
TypeResolutionStage::Interface},
|
|
Type());
|
|
}
|
|
|
|
ClassDecl *ProtocolDecl::getSuperclassDecl() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
SuperclassDeclRequest{const_cast<ProtocolDecl *>(this)}, nullptr);
|
|
}
|
|
|
|
void ProtocolDecl::setSuperclass(Type superclass) {
|
|
assert((!superclass || !superclass->hasArchetype())
|
|
&& "superclass must be interface type");
|
|
LazySemanticInfo.SuperclassType.setPointerAndInt(superclass, true);
|
|
LazySemanticInfo.SuperclassDecl.setPointerAndInt(
|
|
superclass ? superclass->getClassOrBoundGenericClass() : nullptr,
|
|
true);
|
|
}
|
|
|
|
bool ProtocolDecl::walkInheritedProtocols(
|
|
llvm::function_ref<TypeWalker::Action(ProtocolDecl *)> fn) const {
|
|
auto self = const_cast<ProtocolDecl *>(this);
|
|
|
|
// Visit all of the inherited protocols.
|
|
SmallPtrSet<ProtocolDecl *, 8> visited;
|
|
SmallVector<ProtocolDecl *, 4> stack;
|
|
stack.push_back(self);
|
|
visited.insert(self);
|
|
while (!stack.empty()) {
|
|
// Pull the next protocol off the stack.
|
|
auto proto = stack.back();
|
|
stack.pop_back();
|
|
|
|
switch (fn(proto)) {
|
|
case TypeWalker::Action::Stop:
|
|
return true;
|
|
|
|
case TypeWalker::Action::Continue:
|
|
// Add inherited protocols to the stack.
|
|
for (auto inherited : proto->getInheritedProtocols()) {
|
|
if (visited.insert(inherited).second)
|
|
stack.push_back(inherited);
|
|
}
|
|
break;
|
|
|
|
case TypeWalker::Action::SkipChildren:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
bool ProtocolDecl::inheritsFrom(const ProtocolDecl *super) const {
|
|
if (this == super)
|
|
return false;
|
|
|
|
return walkInheritedProtocols([super](ProtocolDecl *inherited) {
|
|
if (inherited == super)
|
|
return TypeWalker::Action::Stop;
|
|
|
|
return TypeWalker::Action::Continue;
|
|
});
|
|
}
|
|
|
|
bool ProtocolDecl::requiresClass() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
ProtocolRequiresClassRequest{const_cast<ProtocolDecl *>(this)}, false);
|
|
}
|
|
|
|
bool ProtocolDecl::requiresSelfConformanceWitnessTable() const {
|
|
return isSpecificProtocol(KnownProtocolKind::Error);
|
|
}
|
|
|
|
bool ProtocolDecl::existentialConformsToSelf() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
ExistentialConformsToSelfRequest{const_cast<ProtocolDecl *>(this)}, true);
|
|
}
|
|
|
|
/// Classify usages of Self in the given type.
|
|
///
|
|
/// \param position The position we are currently at, in terms of variance.
|
|
static SelfReferenceInfo
|
|
findProtocolSelfReferences(const ProtocolDecl *proto, Type type,
|
|
SelfReferencePosition position) {
|
|
// If there are no type parameters, we're done.
|
|
if (!type->hasTypeParameter())
|
|
return SelfReferenceInfo();
|
|
|
|
// Tuples preserve variance.
|
|
if (auto tuple = type->getAs<TupleType>()) {
|
|
auto info = SelfReferenceInfo();
|
|
for (auto &elt : tuple->getElements()) {
|
|
info |= findProtocolSelfReferences(proto, elt.getType(), position);
|
|
}
|
|
|
|
// A covariant Self result inside a tuple will not be bona fide.
|
|
info.hasCovariantSelfResult = false;
|
|
|
|
return info;
|
|
}
|
|
|
|
// Function preserve variance in the result type, and flip variance in
|
|
// the parameter type.
|
|
if (auto funcTy = type->getAs<AnyFunctionType>()) {
|
|
auto inputInfo = SelfReferenceInfo();
|
|
for (auto param : funcTy->getParams()) {
|
|
// inout parameters are invariant.
|
|
if (param.isInOut()) {
|
|
inputInfo |= findProtocolSelfReferences(
|
|
proto, param.getPlainType(), SelfReferencePosition::Invariant);
|
|
continue;
|
|
}
|
|
inputInfo |= findProtocolSelfReferences(proto, param.getParameterType(),
|
|
position.flipped());
|
|
}
|
|
|
|
// A covariant Self result inside a parameter will not be bona fide.
|
|
inputInfo.hasCovariantSelfResult = false;
|
|
|
|
auto resultInfo =
|
|
findProtocolSelfReferences(proto, funcTy->getResult(), position);
|
|
if (resultInfo.selfRef == SelfReferencePosition::Covariant) {
|
|
resultInfo.hasCovariantSelfResult = true;
|
|
}
|
|
return inputInfo |= resultInfo;
|
|
}
|
|
|
|
// Metatypes preserve variance.
|
|
if (auto metaTy = type->getAs<MetatypeType>()) {
|
|
return findProtocolSelfReferences(proto, metaTy->getInstanceType(),
|
|
position);
|
|
}
|
|
|
|
// Optionals preserve variance.
|
|
if (auto optType = type->getOptionalObjectType()) {
|
|
return findProtocolSelfReferences(proto, optType, position);
|
|
}
|
|
|
|
// DynamicSelfType preserves variance.
|
|
// FIXME: This shouldn't ever appear in protocol requirement
|
|
// signatures.
|
|
if (auto selfType = type->getAs<DynamicSelfType>()) {
|
|
return findProtocolSelfReferences(proto, selfType->getSelfType(), position);
|
|
}
|
|
|
|
// Bound generic types are invariant.
|
|
if (auto boundGenericType = type->getAs<BoundGenericType>()) {
|
|
auto info = SelfReferenceInfo();
|
|
for (auto paramType : boundGenericType->getGenericArgs()) {
|
|
info |= findProtocolSelfReferences(proto, paramType,
|
|
SelfReferencePosition::Invariant);
|
|
}
|
|
|
|
return info;
|
|
}
|
|
|
|
// Opaque result types of protocol extension members contain an invariant
|
|
// reference to 'Self'.
|
|
if (type->is<OpaqueTypeArchetypeType>())
|
|
return SelfReferenceInfo::forSelfRef(SelfReferencePosition::Invariant);
|
|
|
|
// A direct reference to 'Self'.
|
|
if (proto->getSelfInterfaceType()->isEqual(type))
|
|
return SelfReferenceInfo::forSelfRef(position);
|
|
|
|
// A reference to an associated type rooted on 'Self'.
|
|
if (type->is<DependentMemberType>()) {
|
|
type = type->getRootGenericParam();
|
|
if (proto->getSelfInterfaceType()->isEqual(type))
|
|
return SelfReferenceInfo::forAssocTypeRef(position);
|
|
}
|
|
|
|
return SelfReferenceInfo();
|
|
}
|
|
|
|
/// Find Self references within the given requirement.
|
|
SelfReferenceInfo ProtocolDecl::findProtocolSelfReferences(
|
|
const ValueDecl *value, bool treatNonResultCovariantSelfAsInvariant) const {
|
|
// Types never refer to 'Self'.
|
|
if (isa<TypeDecl>(value))
|
|
return SelfReferenceInfo();
|
|
|
|
auto type = value->getInterfaceType();
|
|
|
|
// Skip invalid declarations.
|
|
if (type->hasError())
|
|
return SelfReferenceInfo();
|
|
|
|
if (isa<AbstractFunctionDecl>(value) || isa<SubscriptDecl>(value)) {
|
|
// For a method, skip the 'self' parameter.
|
|
if (isa<AbstractFunctionDecl>(value))
|
|
type = type->castTo<AnyFunctionType>()->getResult();
|
|
|
|
auto inputInfo = SelfReferenceInfo();
|
|
for (auto param : type->castTo<AnyFunctionType>()->getParams()) {
|
|
// inout parameters are invariant.
|
|
if (param.isInOut()) {
|
|
inputInfo |= ::findProtocolSelfReferences(
|
|
this, param.getPlainType(), SelfReferencePosition::Invariant);
|
|
continue;
|
|
}
|
|
inputInfo |= ::findProtocolSelfReferences(
|
|
this, param.getParameterType(), SelfReferencePosition::Contravariant);
|
|
}
|
|
|
|
// A covariant Self result inside a parameter will not be bona fide.
|
|
inputInfo.hasCovariantSelfResult = false;
|
|
|
|
// FIXME: Rather than having a special flag for the is-inheritable check,
|
|
// ensure non-result covariant Self is always diagnosed during type
|
|
// resolution.
|
|
//
|
|
// Methods of non-final classes can only contain a covariant 'Self'
|
|
// as their result type.
|
|
if (treatNonResultCovariantSelfAsInvariant &&
|
|
inputInfo.selfRef == SelfReferencePosition::Covariant) {
|
|
inputInfo.selfRef = SelfReferencePosition::Invariant;
|
|
}
|
|
|
|
auto resultInfo = ::findProtocolSelfReferences(
|
|
this, type->castTo<AnyFunctionType>()->getResult(),
|
|
SelfReferencePosition::Covariant);
|
|
if (resultInfo.selfRef == SelfReferencePosition::Covariant) {
|
|
resultInfo.hasCovariantSelfResult = true;
|
|
}
|
|
|
|
return inputInfo |= resultInfo;
|
|
} else {
|
|
assert(isa<VarDecl>(value));
|
|
|
|
auto info = ::findProtocolSelfReferences(this, type,
|
|
SelfReferencePosition::Covariant);
|
|
if (info.selfRef == SelfReferencePosition::Covariant) {
|
|
info.hasCovariantSelfResult = true;
|
|
}
|
|
|
|
return info;
|
|
}
|
|
|
|
return SelfReferenceInfo();
|
|
}
|
|
|
|
bool ProtocolDecl::isAvailableInExistential(const ValueDecl *decl) const {
|
|
// If the member type references 'Self' in non-covariant position, or an
|
|
// associated type in any position, we cannot use the existential type.
|
|
const auto info = findProtocolSelfReferences(
|
|
decl, /*treatNonResultCovariantSelfAsInvariant=*/false);
|
|
if (info.selfRef > SelfReferencePosition::Covariant || info.assocTypeRef) {
|
|
return false;
|
|
}
|
|
|
|
// FIXME: Appropriately diagnose assignments instead.
|
|
if (auto *const storageDecl = dyn_cast<AbstractStorageDecl>(decl)) {
|
|
if (info.hasCovariantSelfResult && storageDecl->supportsMutation())
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ProtocolDecl::existentialTypeSupported() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
ExistentialTypeSupportedRequest{const_cast<ProtocolDecl *>(this)}, true);
|
|
}
|
|
|
|
StringRef ProtocolDecl::getObjCRuntimeName(
|
|
llvm::SmallVectorImpl<char> &buffer) const {
|
|
// If there is an 'objc' attribute with a name, use that name.
|
|
if (auto objc = getAttrs().getAttribute<ObjCAttr>()) {
|
|
if (auto name = objc->getName())
|
|
return name->getString(buffer);
|
|
}
|
|
|
|
// Produce the mangled name for this protocol.
|
|
return mangleObjCRuntimeName(this, buffer);
|
|
}
|
|
|
|
ArrayRef<Requirement> ProtocolDecl::getRequirementSignature() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
RequirementSignatureRequest { const_cast<ProtocolDecl *>(this) },
|
|
None);
|
|
}
|
|
|
|
bool ProtocolDecl::isComputingRequirementSignature() const {
|
|
return getASTContext().evaluator.hasActiveRequest(
|
|
RequirementSignatureRequest{const_cast<ProtocolDecl*>(this)});
|
|
}
|
|
|
|
void ProtocolDecl::setRequirementSignature(ArrayRef<Requirement> requirements) {
|
|
assert(!RequirementSignature && "requirement signature already set");
|
|
if (requirements.empty()) {
|
|
RequirementSignature = reinterpret_cast<Requirement *>(this + 1);
|
|
Bits.ProtocolDecl.NumRequirementsInSignature = 0;
|
|
} else {
|
|
RequirementSignature = requirements.data();
|
|
Bits.ProtocolDecl.NumRequirementsInSignature = requirements.size();
|
|
}
|
|
}
|
|
|
|
void
|
|
ProtocolDecl::setLazyRequirementSignature(LazyMemberLoader *lazyLoader,
|
|
uint64_t requirementSignatureData) {
|
|
assert(!RequirementSignature && "requirement signature already set");
|
|
|
|
auto contextData = static_cast<LazyProtocolData *>(
|
|
getASTContext().getOrCreateLazyContextData(this, lazyLoader));
|
|
contextData->requirementSignatureData = requirementSignatureData;
|
|
Bits.ProtocolDecl.HasLazyRequirementSignature = true;
|
|
|
|
++NumLazyRequirementSignatures;
|
|
// FIXME: (transitional) increment the redundant "always-on" counter.
|
|
if (auto *Stats = getASTContext().Stats)
|
|
++Stats->getFrontendCounters().NumLazyRequirementSignatures;
|
|
}
|
|
|
|
ArrayRef<Requirement> ProtocolDecl::getCachedRequirementSignature() const {
|
|
assert(RequirementSignature &&
|
|
"getting requirement signature before computing it");
|
|
return llvm::makeArrayRef(RequirementSignature,
|
|
Bits.ProtocolDecl.NumRequirementsInSignature);
|
|
}
|
|
|
|
void ProtocolDecl::computeKnownProtocolKind() const {
|
|
auto module = getModuleContext();
|
|
if (module != module->getASTContext().getStdlibModule() &&
|
|
!module->getName().is("Foundation") &&
|
|
!module->getName().is("_Differentiation") &&
|
|
!module->getName().is("_Concurrency")) {
|
|
const_cast<ProtocolDecl *>(this)->Bits.ProtocolDecl.KnownProtocol = 1;
|
|
return;
|
|
}
|
|
|
|
unsigned value =
|
|
llvm::StringSwitch<unsigned>(getBaseName().userFacingName())
|
|
#define PROTOCOL_WITH_NAME(Id, Name) \
|
|
.Case(Name, static_cast<unsigned>(KnownProtocolKind::Id) + 2)
|
|
#include "swift/AST/KnownProtocols.def"
|
|
.Default(1);
|
|
|
|
const_cast<ProtocolDecl *>(this)->Bits.ProtocolDecl.KnownProtocol = value;
|
|
}
|
|
|
|
Optional<KnownDerivableProtocolKind>
|
|
ProtocolDecl::getKnownDerivableProtocolKind() const {
|
|
const auto knownKind = getKnownProtocolKind();
|
|
if (!knownKind)
|
|
return None;
|
|
|
|
switch (*knownKind) {
|
|
case KnownProtocolKind::RawRepresentable:
|
|
return KnownDerivableProtocolKind::RawRepresentable;
|
|
case KnownProtocolKind::OptionSet:
|
|
return KnownDerivableProtocolKind::OptionSet;
|
|
case KnownProtocolKind::CaseIterable:
|
|
return KnownDerivableProtocolKind::CaseIterable;
|
|
case KnownProtocolKind::Comparable:
|
|
return KnownDerivableProtocolKind::Comparable;
|
|
case KnownProtocolKind::Equatable:
|
|
return KnownDerivableProtocolKind::Equatable;
|
|
case KnownProtocolKind::Hashable:
|
|
return KnownDerivableProtocolKind::Hashable;
|
|
case KnownProtocolKind::BridgedNSError:
|
|
return KnownDerivableProtocolKind::BridgedNSError;
|
|
case KnownProtocolKind::CodingKey:
|
|
return KnownDerivableProtocolKind::CodingKey;
|
|
case KnownProtocolKind::Encodable:
|
|
return KnownDerivableProtocolKind::Encodable;
|
|
case KnownProtocolKind::Decodable:
|
|
return KnownDerivableProtocolKind::Decodable;
|
|
case KnownProtocolKind::AdditiveArithmetic:
|
|
return KnownDerivableProtocolKind::AdditiveArithmetic;
|
|
case KnownProtocolKind::Differentiable:
|
|
return KnownDerivableProtocolKind::Differentiable;
|
|
case KnownProtocolKind::Actor:
|
|
return KnownDerivableProtocolKind::Actor;
|
|
default: return None;
|
|
}
|
|
}
|
|
|
|
bool ProtocolDecl::hasCircularInheritedProtocols() const {
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<ProtocolDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, HasCircularInheritedProtocolsRequest{mutableThis}, true);
|
|
}
|
|
|
|
StorageImplInfo AbstractStorageDecl::getImplInfo() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
StorageImplInfoRequest{const_cast<AbstractStorageDecl *>(this)},
|
|
StorageImplInfo::getSimpleStored(StorageIsMutable));
|
|
}
|
|
|
|
bool AbstractStorageDecl::hasPrivateAccessor() const {
|
|
for (auto accessor : getAllAccessors()) {
|
|
if (hasPrivateOrFilePrivateFormalAccess(accessor))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool AbstractStorageDecl::hasDidSetOrWillSetDynamicReplacement() const {
|
|
if (auto *func = getParsedAccessor(AccessorKind::DidSet))
|
|
return (bool)func->getDynamicallyReplacedDecl();
|
|
if (auto *func = getParsedAccessor(AccessorKind::WillSet))
|
|
return (bool)func->getDynamicallyReplacedDecl();
|
|
return false;
|
|
}
|
|
|
|
bool AbstractStorageDecl::hasAnyNativeDynamicAccessors() const {
|
|
for (auto accessor : getAllAccessors()) {
|
|
if (accessor->shouldUseNativeDynamicDispatch())
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void AbstractStorageDecl::setAccessors(SourceLoc lbraceLoc,
|
|
ArrayRef<AccessorDecl *> accessors,
|
|
SourceLoc rbraceLoc) {
|
|
// This method is called after we've already recorded an accessors clause
|
|
// only on recovery paths and only when that clause was empty.
|
|
auto record = Accessors.getPointer();
|
|
if (record) {
|
|
assert(record->getAllAccessors().empty());
|
|
for (auto accessor : accessors) {
|
|
(void) record->addOpaqueAccessor(accessor);
|
|
}
|
|
} else {
|
|
record = AccessorRecord::create(getASTContext(),
|
|
SourceRange(lbraceLoc, rbraceLoc),
|
|
accessors);
|
|
Accessors.setPointer(record);
|
|
}
|
|
}
|
|
|
|
// Compute the number of opaque accessors.
|
|
const size_t NumOpaqueAccessors =
|
|
0
|
|
#define ACCESSOR(ID)
|
|
#define OPAQUE_ACCESSOR(ID, KEYWORD) \
|
|
+ 1
|
|
#include "swift/AST/AccessorKinds.def"
|
|
;
|
|
|
|
AbstractStorageDecl::AccessorRecord *
|
|
AbstractStorageDecl::AccessorRecord::create(ASTContext &ctx,
|
|
SourceRange braces,
|
|
ArrayRef<AccessorDecl*> accessors) {
|
|
// Silently cap the number of accessors we store at a number that should
|
|
// be easily sufficient for all the valid cases, including space for adding
|
|
// implicit opaque accessors later.
|
|
//
|
|
// We should have already emitted a diagnostic in the parser if we have
|
|
// this many accessors, because most of them will necessarily be redundant.
|
|
if (accessors.size() + NumOpaqueAccessors > MaxNumAccessors) {
|
|
accessors = accessors.slice(0, MaxNumAccessors - NumOpaqueAccessors);
|
|
}
|
|
|
|
// Make sure that we have enough space to add implicit opaque accessors later.
|
|
size_t numMissingOpaque = NumOpaqueAccessors;
|
|
{
|
|
#define ACCESSOR(ID)
|
|
#define OPAQUE_ACCESSOR(ID, KEYWORD) \
|
|
bool has##ID = false;
|
|
#include "swift/AST/AccessorKinds.def"
|
|
for (auto accessor : accessors) {
|
|
switch (accessor->getAccessorKind()) {
|
|
#define ACCESSOR(ID) \
|
|
case AccessorKind::ID: \
|
|
continue;
|
|
#define OPAQUE_ACCESSOR(ID, KEYWORD) \
|
|
case AccessorKind::ID: \
|
|
if (!has##ID) { \
|
|
has##ID = true; \
|
|
--numMissingOpaque; \
|
|
} \
|
|
continue;
|
|
#include "swift/AST/AccessorKinds.def"
|
|
}
|
|
llvm_unreachable("bad accessor kind");
|
|
}
|
|
}
|
|
|
|
auto accessorsCapacity = AccessorIndex(accessors.size() + numMissingOpaque);
|
|
void *mem = ctx.Allocate(totalSizeToAlloc<AccessorDecl*>(accessorsCapacity),
|
|
alignof(AccessorRecord));
|
|
return new (mem) AccessorRecord(braces, accessors, accessorsCapacity);
|
|
}
|
|
|
|
AbstractStorageDecl::AccessorRecord::AccessorRecord(SourceRange braces,
|
|
ArrayRef<AccessorDecl *> accessors,
|
|
AccessorIndex accessorsCapacity)
|
|
: Braces(braces), NumAccessors(accessors.size()),
|
|
AccessorsCapacity(accessorsCapacity), AccessorIndices{} {
|
|
|
|
// Copy the complete accessors list into place.
|
|
memcpy(getAccessorsBuffer().data(), accessors.data(),
|
|
accessors.size() * sizeof(AccessorDecl*));
|
|
|
|
// Register all the accessors.
|
|
for (auto index : indices(accessors)) {
|
|
(void) registerAccessor(accessors[index], index);
|
|
}
|
|
}
|
|
|
|
void AbstractStorageDecl::AccessorRecord::addOpaqueAccessor(AccessorDecl *decl){
|
|
assert(decl);
|
|
|
|
// Add the accessor to the array.
|
|
assert(NumAccessors < AccessorsCapacity);
|
|
AccessorIndex index = NumAccessors++;
|
|
getAccessorsBuffer()[index] = decl;
|
|
|
|
// Register it.
|
|
bool isUnique = registerAccessor(decl, index);
|
|
assert(isUnique && "adding opaque accessor that's already present");
|
|
(void) isUnique;
|
|
}
|
|
|
|
/// Register that we have an accessor of the given kind.
|
|
bool AbstractStorageDecl::AccessorRecord::registerAccessor(AccessorDecl *decl,
|
|
AccessorIndex index){
|
|
// Remember that we have at least one accessor of this kind.
|
|
auto &indexSlot = AccessorIndices[unsigned(decl->getAccessorKind())];
|
|
if (indexSlot) {
|
|
return false;
|
|
} else {
|
|
indexSlot = index + 1;
|
|
|
|
assert(getAccessor(decl->getAccessorKind()) == decl);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
AccessLevel
|
|
AbstractStorageDecl::getSetterFormalAccess() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
SetterAccessLevelRequest{const_cast<AbstractStorageDecl *>(this)},
|
|
AccessLevel::Private);
|
|
}
|
|
|
|
AccessScope
|
|
AbstractStorageDecl::getSetterFormalAccessScope(const DeclContext *useDC,
|
|
bool treatUsableFromInlineAsPublic) const {
|
|
return getAccessScopeForFormalAccess(this, getSetterFormalAccess(), useDC,
|
|
treatUsableFromInlineAsPublic);
|
|
}
|
|
|
|
void AbstractStorageDecl::setComputedSetter(AccessorDecl *setter) {
|
|
assert(getImplInfo().getReadImpl() == ReadImplKind::Get);
|
|
assert(!getImplInfo().supportsMutation());
|
|
assert(getAccessor(AccessorKind::Get) && "invariant check: missing getter");
|
|
assert(!getAccessor(AccessorKind::Set) && "already has a setter");
|
|
assert(hasClangNode() && "should only be used for ObjC properties");
|
|
assert(setter && "should not be called for readonly properties");
|
|
assert(setter->getAccessorKind() == AccessorKind::Set);
|
|
|
|
setImplInfo(StorageImplInfo::getMutableComputed());
|
|
Accessors.getPointer()->addOpaqueAccessor(setter);
|
|
}
|
|
|
|
void
|
|
AbstractStorageDecl::setSynthesizedAccessor(AccessorKind kind,
|
|
AccessorDecl *accessor) {
|
|
assert(!getAccessor(kind) && "accessor already exists");
|
|
assert(accessor->getAccessorKind() == kind);
|
|
|
|
auto accessors = Accessors.getPointer();
|
|
if (!accessors) {
|
|
accessors = AccessorRecord::create(getASTContext(), SourceRange(), {});
|
|
Accessors.setPointer(accessors);
|
|
}
|
|
|
|
accessors->addOpaqueAccessor(accessor);
|
|
}
|
|
|
|
static Optional<ObjCSelector>
|
|
getNameFromObjcAttribute(const ObjCAttr *attr, DeclName preferredName) {
|
|
if (!attr)
|
|
return None;
|
|
if (auto name = attr->getName()) {
|
|
if (attr->isNameImplicit()) {
|
|
// preferredName > implicit name, because implicit name is just cached
|
|
// actual name.
|
|
if (!preferredName)
|
|
return *name;
|
|
} else {
|
|
// explicit name > preferred name.
|
|
return *name;
|
|
}
|
|
}
|
|
return None;
|
|
}
|
|
|
|
ObjCSelector
|
|
AbstractStorageDecl::getObjCGetterSelector(Identifier preferredName) const {
|
|
// If the getter has an @objc attribute with a name, use that.
|
|
if (auto getter = getOpaqueAccessor(AccessorKind::Get)) {
|
|
if (auto name = getNameFromObjcAttribute(getter->getAttrs().
|
|
getAttribute<ObjCAttr>(), preferredName))
|
|
return *name;
|
|
}
|
|
|
|
// Subscripts use a specific selector.
|
|
auto &ctx = getASTContext();
|
|
if (auto *SD = dyn_cast<SubscriptDecl>(this)) {
|
|
switch (SD->getObjCSubscriptKind()) {
|
|
case ObjCSubscriptKind::Indexed:
|
|
return ObjCSelector(ctx, 1, ctx.Id_objectAtIndexedSubscript);
|
|
case ObjCSubscriptKind::Keyed:
|
|
return ObjCSelector(ctx, 1, ctx.Id_objectForKeyedSubscript);
|
|
}
|
|
}
|
|
|
|
// The getter selector is the property name itself.
|
|
auto var = cast<VarDecl>(this);
|
|
auto name = var->getObjCPropertyName();
|
|
|
|
// Use preferred name is specified.
|
|
if (!preferredName.empty())
|
|
name = preferredName;
|
|
return VarDecl::getDefaultObjCGetterSelector(ctx, name);
|
|
}
|
|
|
|
ObjCSelector
|
|
AbstractStorageDecl::getObjCSetterSelector(Identifier preferredName) const {
|
|
// If the setter has an @objc attribute with a name, use that.
|
|
auto setter = getOpaqueAccessor(AccessorKind::Set);
|
|
auto objcAttr = setter ? setter->getAttrs().getAttribute<ObjCAttr>()
|
|
: nullptr;
|
|
if (auto name = getNameFromObjcAttribute(objcAttr, DeclName(preferredName))) {
|
|
return *name;
|
|
}
|
|
|
|
// Subscripts use a specific selector.
|
|
auto &ctx = getASTContext();
|
|
if (auto *SD = dyn_cast<SubscriptDecl>(this)) {
|
|
switch (SD->getObjCSubscriptKind()) {
|
|
case ObjCSubscriptKind::Indexed:
|
|
return ObjCSelector(ctx, 2,
|
|
{ ctx.Id_setObject, ctx.Id_atIndexedSubscript });
|
|
case ObjCSubscriptKind::Keyed:
|
|
return ObjCSelector(ctx, 2,
|
|
{ ctx.Id_setObject, ctx.Id_forKeyedSubscript });
|
|
}
|
|
}
|
|
|
|
|
|
// The setter selector for, e.g., 'fooBar' is 'setFooBar:', with the
|
|
// property name capitalized and preceded by 'set'.
|
|
auto var = cast<VarDecl>(this);
|
|
Identifier Name = var->getObjCPropertyName();
|
|
if (!preferredName.empty())
|
|
Name = preferredName;
|
|
auto result = VarDecl::getDefaultObjCSetterSelector(ctx, Name);
|
|
|
|
// Cache the result, so we don't perform string manipulation again.
|
|
if (objcAttr && preferredName.empty())
|
|
const_cast<ObjCAttr *>(objcAttr)->setName(result, /*implicit=*/true);
|
|
|
|
return result;
|
|
}
|
|
|
|
SourceLoc AbstractStorageDecl::getOverrideLoc() const {
|
|
if (auto *Override = getAttrs().getAttribute<OverrideAttr>())
|
|
return Override->getLocation();
|
|
return SourceLoc();
|
|
}
|
|
|
|
Type AbstractStorageDecl::getValueInterfaceType() const {
|
|
if (auto var = dyn_cast<VarDecl>(this))
|
|
return var->getInterfaceType()->getReferenceStorageReferent();
|
|
return cast<SubscriptDecl>(this)->getElementInterfaceType();
|
|
}
|
|
|
|
VarDecl::VarDecl(DeclKind kind, bool isStatic, VarDecl::Introducer introducer,
|
|
SourceLoc nameLoc, Identifier name,
|
|
DeclContext *dc, StorageIsMutable_t supportsMutation)
|
|
: AbstractStorageDecl(kind, isStatic, dc, name, nameLoc, supportsMutation)
|
|
{
|
|
Bits.VarDecl.Introducer = unsigned(introducer);
|
|
Bits.VarDecl.IsSelfParamCapture = false;
|
|
Bits.VarDecl.IsDebuggerVar = false;
|
|
Bits.VarDecl.IsLazyStorageProperty = false;
|
|
Bits.VarDecl.IsPropertyWrapperBackingProperty = false;
|
|
Bits.VarDecl.IsTopLevelGlobal = false;
|
|
}
|
|
|
|
Type VarDecl::getType() const {
|
|
return getDeclContext()->mapTypeIntoContext(getInterfaceType());
|
|
}
|
|
|
|
/// Returns whether the var is settable in the specified context: this
|
|
/// is either because it is a stored var, because it has a custom setter, or
|
|
/// is a let member in an initializer.
|
|
bool VarDecl::isSettable(const DeclContext *UseDC,
|
|
const DeclRefExpr *base) const {
|
|
// Only inout parameters are settable.
|
|
if (auto *PD = dyn_cast<ParamDecl>(this))
|
|
return PD->isInOut();
|
|
|
|
// If this is a 'var' decl, then we're settable if we have storage or a
|
|
// setter.
|
|
if (!isLet())
|
|
return supportsMutation();
|
|
|
|
//
|
|
// All the remaining logic handles the special cases where you can
|
|
// assign a 'let'.
|
|
//
|
|
|
|
// Debugger expression 'let's are initialized through a side-channel.
|
|
if (isDebuggerVar())
|
|
return false;
|
|
|
|
// 'let's are only ever settable from a specific DeclContext.
|
|
if (UseDC == nullptr)
|
|
return false;
|
|
|
|
// 'let' properties in structs/classes are only ever settable in their
|
|
// designated initializer(s).
|
|
if (isInstanceMember()) {
|
|
auto *CD = dyn_cast<ConstructorDecl>(UseDC);
|
|
if (!CD) return false;
|
|
|
|
auto *CDC = CD->getDeclContext();
|
|
|
|
// 'let' properties are not valid inside protocols.
|
|
if (CDC->getExtendedProtocolDecl())
|
|
return false;
|
|
|
|
// If this init is defined inside of the same type (or in an extension
|
|
// thereof) as the let property, then it is mutable.
|
|
if (CDC->getSelfNominalTypeDecl() !=
|
|
getDeclContext()->getSelfNominalTypeDecl())
|
|
return false;
|
|
|
|
if (base && CD->getImplicitSelfDecl() != base->getDecl())
|
|
return false;
|
|
|
|
// If this is a convenience initializer (i.e. one that calls
|
|
// self.init), then let properties are never mutable in it. They are
|
|
// only mutable in designated initializers.
|
|
auto initKindAndExpr = CD->getDelegatingOrChainedInitKind();
|
|
if (initKindAndExpr.initKind == BodyInitKind::Delegating)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
// If the 'let' has a value bound to it but has no PBD, then it is
|
|
// already initializedand not settable.
|
|
if (getParentPatternBinding() == nullptr)
|
|
return false;
|
|
|
|
// If the 'let' has an explicitly written initializer with a pattern binding,
|
|
// then it isn't settable.
|
|
if (isParentInitialized())
|
|
return false;
|
|
|
|
// Normal lets (e.g. globals) are only mutable in the context of the
|
|
// declaration. To handle top-level code properly, we look through
|
|
// the TopLevelCode decl on the use (if present) since the vardecl may be
|
|
// one level up.
|
|
if (getDeclContext() == UseDC)
|
|
return true;
|
|
|
|
if (isa<TopLevelCodeDecl>(UseDC) &&
|
|
getDeclContext() == UseDC->getParent())
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool VarDecl::isLazilyInitializedGlobal() const {
|
|
assert(!getDeclContext()->isLocalContext() &&
|
|
"not a global variable!");
|
|
assert(hasStorage() && "not a stored global variable!");
|
|
|
|
// Imports from C are never lazily initialized.
|
|
if (hasClangNode())
|
|
return false;
|
|
|
|
if (isDebuggerVar())
|
|
return false;
|
|
|
|
// Top-level global variables in the main source file and in the REPL are not
|
|
// lazily initialized.
|
|
return !isTopLevelGlobal();
|
|
}
|
|
|
|
SourceRange VarDecl::getSourceRange() const {
|
|
if (auto Param = dyn_cast<ParamDecl>(this))
|
|
return Param->getSourceRange();
|
|
return getNameLoc();
|
|
}
|
|
|
|
SourceRange VarDecl::getTypeSourceRangeForDiagnostics() const {
|
|
// For a parameter, map back to its parameter to get the TypeLoc.
|
|
if (auto *PD = dyn_cast<ParamDecl>(this)) {
|
|
if (auto typeRepr = PD->getTypeRepr())
|
|
return typeRepr->getSourceRange();
|
|
}
|
|
|
|
Pattern *Pat = getParentPattern();
|
|
if (!Pat || Pat->isImplicit())
|
|
return SourceRange();
|
|
|
|
if (auto *VP = dyn_cast<BindingPattern>(Pat))
|
|
Pat = VP->getSubPattern();
|
|
if (auto *TP = dyn_cast<TypedPattern>(Pat))
|
|
if (auto typeRepr = TP->getTypeRepr())
|
|
return typeRepr->getSourceRange();
|
|
|
|
return SourceRange();
|
|
}
|
|
|
|
static Optional<std::pair<CaseStmt *, Pattern *>>
|
|
findParentPatternCaseStmtAndPattern(const VarDecl *inputVD) {
|
|
auto getMatchingPattern = [&](CaseStmt *cs) -> Pattern * {
|
|
// Check if inputVD is in our case body var decls if we have any. If we do,
|
|
// treat its pattern as our first case label item pattern.
|
|
for (auto *vd : cs->getCaseBodyVariablesOrEmptyArray()) {
|
|
if (vd == inputVD) {
|
|
return cs->getMutableCaseLabelItems().front().getPattern();
|
|
}
|
|
}
|
|
|
|
// Then check the rest of our case label items.
|
|
for (auto &item : cs->getMutableCaseLabelItems()) {
|
|
if (item.getPattern()->containsVarDecl(inputVD)) {
|
|
return item.getPattern();
|
|
}
|
|
}
|
|
|
|
// Otherwise return false if we do not find anything.
|
|
return nullptr;
|
|
};
|
|
|
|
// First find our canonical var decl. This is the VarDecl corresponding to the
|
|
// first case label item of the first case block in the fallthrough chain that
|
|
// our case block is within. Grab the case stmt associated with that var decl
|
|
// and start traveling down the fallthrough chain looking for the case
|
|
// statement that the input VD belongs to by using getMatchingPattern().
|
|
auto *canonicalVD = inputVD->getCanonicalVarDecl();
|
|
auto *caseStmt =
|
|
dyn_cast_or_null<CaseStmt>(canonicalVD->getParentPatternStmt());
|
|
if (!caseStmt)
|
|
return None;
|
|
|
|
if (auto *p = getMatchingPattern(caseStmt))
|
|
return std::make_pair(caseStmt, p);
|
|
|
|
while ((caseStmt = caseStmt->getFallthroughDest().getPtrOrNull())) {
|
|
if (auto *p = getMatchingPattern(caseStmt))
|
|
return std::make_pair(caseStmt, p);
|
|
}
|
|
|
|
return None;
|
|
}
|
|
|
|
VarDecl *VarDecl::getCanonicalVarDecl() const {
|
|
// Any var decl without a parent var decl is canonical. This means that before
|
|
// type checking, all var decls are canonical.
|
|
auto *cur = const_cast<VarDecl *>(this);
|
|
auto *vd = cur->getParentVarDecl();
|
|
if (!vd)
|
|
return cur;
|
|
|
|
#ifndef NDEBUG
|
|
// Make sure that we don't get into an infinite loop.
|
|
SmallPtrSet<VarDecl *, 8> visitedDecls;
|
|
visitedDecls.insert(vd);
|
|
visitedDecls.insert(cur);
|
|
#endif
|
|
while (vd) {
|
|
cur = vd;
|
|
vd = vd->getParentVarDecl();
|
|
assert((!vd || visitedDecls.insert(vd).second) && "Infinite loop ?!");
|
|
}
|
|
|
|
return cur;
|
|
}
|
|
|
|
Stmt *VarDecl::getRecursiveParentPatternStmt() const {
|
|
// If our parent is already a pattern stmt, just return that.
|
|
if (auto *stmt = getParentPatternStmt())
|
|
return stmt;
|
|
|
|
// Otherwise, see if we have a parent var decl. If we do not, then return
|
|
// nullptr. Otherwise, return the case stmt that we found.
|
|
auto result = findParentPatternCaseStmtAndPattern(this);
|
|
if (!result.hasValue())
|
|
return nullptr;
|
|
return result->first;
|
|
}
|
|
|
|
/// Return the Pattern involved in initializing this VarDecl. Recall that the
|
|
/// Pattern may be involved in initializing more than just this one vardecl
|
|
/// though. For example, if this is a VarDecl for "x", the pattern may be
|
|
/// "(x, y)" and the initializer on the PatternBindingDecl may be "(1,2)" or
|
|
/// "foo()".
|
|
///
|
|
/// If this has no parent pattern binding decl or statement associated, it
|
|
/// returns null.
|
|
///
|
|
Pattern *VarDecl::getParentPattern() const {
|
|
// If this has a PatternBindingDecl parent, use its pattern.
|
|
if (auto *PBD = getParentPatternBinding()) {
|
|
const auto i = PBD->getPatternEntryIndexForVarDecl(this);
|
|
return PBD->getPattern(i);
|
|
}
|
|
|
|
// If this is a statement parent, dig the pattern out of it.
|
|
if (auto *stmt = getParentPatternStmt()) {
|
|
if (auto *FES = dyn_cast<ForEachStmt>(stmt))
|
|
return FES->getPattern();
|
|
|
|
if (auto *cs = dyn_cast<CaseStmt>(stmt)) {
|
|
// In a case statement, search for the pattern that contains it. This is
|
|
// a bit silly, because you can't have something like "case x, y:" anyway.
|
|
for (auto items : cs->getCaseLabelItems()) {
|
|
if (items.getPattern()->containsVarDecl(this))
|
|
return items.getPattern();
|
|
}
|
|
}
|
|
|
|
if (auto *LCS = dyn_cast<LabeledConditionalStmt>(stmt)) {
|
|
for (auto &elt : LCS->getCond())
|
|
if (auto pat = elt.getPatternOrNull())
|
|
if (pat->containsVarDecl(this))
|
|
return pat;
|
|
}
|
|
}
|
|
|
|
// Otherwise, check if we have to walk our case stmt's var decl list to find
|
|
// the pattern.
|
|
if (auto caseStmtPatternPair = findParentPatternCaseStmtAndPattern(this)) {
|
|
return caseStmtPatternPair->second;
|
|
}
|
|
|
|
// Otherwise, this is a case we do not know or understand. Return nullptr to
|
|
// signal we do not have any information.
|
|
return nullptr;
|
|
}
|
|
|
|
NamedPattern *VarDecl::getNamingPattern() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
NamingPatternRequest{const_cast<VarDecl *>(this)},
|
|
nullptr);
|
|
}
|
|
|
|
void VarDecl::setNamingPattern(NamedPattern *Pat) {
|
|
getASTContext().evaluator.cacheOutput(NamingPatternRequest{this},
|
|
std::move(Pat));
|
|
}
|
|
|
|
TypeRepr *VarDecl::getTypeReprOrParentPatternTypeRepr() const {
|
|
if (auto *param = dyn_cast<ParamDecl>(this))
|
|
return param->getTypeRepr();
|
|
|
|
if (auto *parentPattern = dyn_cast_or_null<TypedPattern>(getParentPattern()))
|
|
return parentPattern->getTypeRepr();
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
NullablePtr<VarDecl>
|
|
VarDecl::getCorrespondingFirstCaseLabelItemVarDecl() const {
|
|
if (!hasName())
|
|
return nullptr;
|
|
|
|
auto *caseStmt = dyn_cast_or_null<CaseStmt>(getRecursiveParentPatternStmt());
|
|
if (!caseStmt)
|
|
return nullptr;
|
|
|
|
auto *pattern = caseStmt->getCaseLabelItems().front().getPattern();
|
|
SmallVector<VarDecl *, 8> vars;
|
|
pattern->collectVariables(vars);
|
|
for (auto *vd : vars) {
|
|
if (vd->hasName() && vd->getName() == getName())
|
|
return vd;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool VarDecl::isCaseBodyVariable() const {
|
|
auto *caseStmt = dyn_cast_or_null<CaseStmt>(getRecursiveParentPatternStmt());
|
|
if (!caseStmt)
|
|
return false;
|
|
return llvm::any_of(caseStmt->getCaseBodyVariablesOrEmptyArray(),
|
|
[&](VarDecl *vd) { return vd == this; });
|
|
}
|
|
|
|
NullablePtr<VarDecl> VarDecl::getCorrespondingCaseBodyVariable() const {
|
|
// Only var decls associated with case statements can have child var decls.
|
|
auto *caseStmt = dyn_cast_or_null<CaseStmt>(getRecursiveParentPatternStmt());
|
|
if (!caseStmt)
|
|
return nullptr;
|
|
|
|
// If this var decl doesn't have a name, it can not have a corresponding case
|
|
// body variable.
|
|
if (!hasName())
|
|
return nullptr;
|
|
|
|
auto name = getName();
|
|
|
|
// A var decl associated with a case stmt implies that the case stmt has body
|
|
// var decls. So we can access the optional value here without worry.
|
|
auto caseBodyVars = caseStmt->getCaseBodyVariables();
|
|
auto result = llvm::find_if(caseBodyVars, [&](VarDecl *caseBodyVar) {
|
|
return caseBodyVar->getName() == name;
|
|
});
|
|
return (result != caseBodyVars.end()) ? *result : nullptr;
|
|
}
|
|
|
|
bool VarDecl::isSelfParameter() const {
|
|
if (isa<ParamDecl>(this)) {
|
|
if (auto *AFD = dyn_cast<AbstractFunctionDecl>(getDeclContext()))
|
|
return AFD->getImplicitSelfDecl(/*createIfNeeded=*/false) == this;
|
|
if (auto *PBI = dyn_cast<PatternBindingInitializer>(getDeclContext()))
|
|
return PBI->getImplicitSelfDecl() == this;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// Whether the given variable is the backing storage property for
|
|
/// a declared property that is either `lazy` or has an attached
|
|
/// property wrapper.
|
|
static bool isBackingStorageForDeclaredProperty(const VarDecl *var) {
|
|
if (var->isLazyStorageProperty())
|
|
return true;
|
|
|
|
if (var->getOriginalWrappedProperty())
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// Whether the given variable is a delcared property that has separate backing storage.
|
|
static bool isDeclaredPropertyWithBackingStorage(const VarDecl *var) {
|
|
if (var->getAttrs().hasAttribute<LazyAttr>())
|
|
return true;
|
|
|
|
if (var->hasAttachedPropertyWrapper())
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool VarDecl::isMemberwiseInitialized(bool preferDeclaredProperties) const {
|
|
// Only non-static properties in type context can be part of a memberwise
|
|
// initializer.
|
|
if (!getDeclContext()->isTypeContext() || isStatic())
|
|
return false;
|
|
|
|
// If this is a stored property, and not a backing property in a case where
|
|
// we only want to see the declared properties, it can be memberwise
|
|
// initialized.
|
|
if (hasStorage() && preferDeclaredProperties &&
|
|
isBackingStorageForDeclaredProperty(this))
|
|
return false;
|
|
|
|
// If this is a computed property, it's not memberwise initialized unless
|
|
// the caller has asked for the declared properties and it is either a
|
|
// `lazy` property or a property with an attached wrapper.
|
|
if (!hasStorage() &&
|
|
!(preferDeclaredProperties &&
|
|
isDeclaredPropertyWithBackingStorage(this)))
|
|
return false;
|
|
|
|
// Initialized 'let' properties have storage, but don't get an argument
|
|
// to the memberwise initializer since they already have an initial
|
|
// value that cannot be overridden.
|
|
if (isLet() && isParentInitialized())
|
|
return false;
|
|
|
|
// Properties with attached wrappers that have an access level < internal
|
|
// but do have an initializer don't participate in the memberwise
|
|
// initializer, because they would arbitrarily lower the access of the
|
|
// memberwise initializer.
|
|
auto origVar = this;
|
|
if (auto origWrapped = getOriginalWrappedProperty())
|
|
origVar = origWrapped;
|
|
if (origVar->getFormalAccess() < AccessLevel::Internal &&
|
|
origVar->hasAttachedPropertyWrapper() &&
|
|
(origVar->isParentInitialized() ||
|
|
(origVar->getParentPatternBinding() &&
|
|
origVar->getParentPatternBinding()->isDefaultInitializable())))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool VarDecl::isAsyncLet() const {
|
|
return getAttrs().hasAttribute<AsyncAttr>();
|
|
}
|
|
|
|
void ParamDecl::setSpecifier(Specifier specifier) {
|
|
// FIXME: Revisit this; in particular shouldn't __owned parameters be
|
|
// ::Let also?
|
|
setIntroducer(specifier == ParamSpecifier::Default
|
|
? VarDecl::Introducer::Let
|
|
: VarDecl::Introducer::Var);
|
|
Bits.ParamDecl.Specifier = static_cast<unsigned>(specifier);
|
|
Bits.ParamDecl.SpecifierComputed = true;
|
|
}
|
|
|
|
bool ParamDecl::isAnonClosureParam() const {
|
|
auto name = getName();
|
|
if (name.empty())
|
|
return false;
|
|
|
|
auto nameStr = name.str();
|
|
if (nameStr.empty())
|
|
return false;
|
|
|
|
return nameStr[0] == '$';
|
|
}
|
|
|
|
ParamDecl::Specifier ParamDecl::getSpecifier() const {
|
|
auto &ctx = getASTContext();
|
|
|
|
auto mutableThis = const_cast<ParamDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
ParamSpecifierRequest{mutableThis},
|
|
ParamDecl::Specifier::Default);
|
|
}
|
|
|
|
StaticSpellingKind AbstractStorageDecl::getCorrectStaticSpelling() const {
|
|
if (!isStatic())
|
|
return StaticSpellingKind::None;
|
|
if (auto *VD = dyn_cast<VarDecl>(this)) {
|
|
if (auto *PBD = VD->getParentPatternBinding()) {
|
|
if (PBD->getStaticSpelling() != StaticSpellingKind::None)
|
|
return PBD->getStaticSpelling();
|
|
}
|
|
} else if (auto *SD = dyn_cast<SubscriptDecl>(this)) {
|
|
return SD->getStaticSpelling();
|
|
}
|
|
|
|
return getCorrectStaticSpellingForDecl(this);
|
|
}
|
|
|
|
llvm::TinyPtrVector<CustomAttr *> VarDecl::getAttachedPropertyWrappers() const {
|
|
auto mutableThis = const_cast<VarDecl *>(this);
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
AttachedPropertyWrappersRequest{mutableThis},
|
|
{ });
|
|
}
|
|
|
|
/// Whether this property has any attached property wrappers.
|
|
bool VarDecl::hasAttachedPropertyWrapper() const {
|
|
return !getAttachedPropertyWrappers().empty();
|
|
}
|
|
|
|
/// Whether all of the attached property wrappers have an init(wrappedValue:)
|
|
/// initializer.
|
|
bool VarDecl::allAttachedPropertyWrappersHaveWrappedValueInit() const {
|
|
for (unsigned i : indices(getAttachedPropertyWrappers())) {
|
|
if (!getAttachedPropertyWrapperTypeInfo(i).wrappedValueInit)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
PropertyWrapperTypeInfo
|
|
VarDecl::getAttachedPropertyWrapperTypeInfo(unsigned i) const {
|
|
auto attrs = getAttachedPropertyWrappers();
|
|
if (i >= attrs.size())
|
|
return PropertyWrapperTypeInfo();
|
|
|
|
auto attr = attrs[i];
|
|
auto dc = getDeclContext();
|
|
ASTContext &ctx = getASTContext();
|
|
auto nominal = evaluateOrDefault(
|
|
ctx.evaluator, CustomAttrNominalRequest{attr, dc}, nullptr);
|
|
if (!nominal)
|
|
return PropertyWrapperTypeInfo();
|
|
|
|
return nominal->getPropertyWrapperTypeInfo();
|
|
}
|
|
|
|
Type VarDecl::getAttachedPropertyWrapperType(unsigned index) const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<VarDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator,
|
|
AttachedPropertyWrapperTypeRequest{mutableThis, index},
|
|
Type());
|
|
}
|
|
|
|
Type VarDecl::getPropertyWrapperBackingPropertyType() const {
|
|
ASTContext &ctx = getASTContext();
|
|
auto mutableThis = const_cast<VarDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, PropertyWrapperBackingPropertyTypeRequest{mutableThis},
|
|
Type());
|
|
}
|
|
|
|
PropertyWrapperBackingPropertyInfo
|
|
VarDecl::getPropertyWrapperBackingPropertyInfo() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<VarDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator,
|
|
PropertyWrapperBackingPropertyInfoRequest{mutableThis},
|
|
PropertyWrapperBackingPropertyInfo());
|
|
}
|
|
|
|
Optional<PropertyWrapperMutability>
|
|
VarDecl::getPropertyWrapperMutability() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<VarDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator,
|
|
PropertyWrapperMutabilityRequest{mutableThis},
|
|
None);
|
|
}
|
|
|
|
Optional<PropertyWrapperSynthesizedPropertyKind>
|
|
VarDecl::getPropertyWrapperSynthesizedPropertyKind() const {
|
|
if (getOriginalWrappedProperty(
|
|
PropertyWrapperSynthesizedPropertyKind::Backing))
|
|
return PropertyWrapperSynthesizedPropertyKind::Backing;
|
|
if (getOriginalWrappedProperty(
|
|
PropertyWrapperSynthesizedPropertyKind::Projection))
|
|
return PropertyWrapperSynthesizedPropertyKind::Projection;
|
|
return None;
|
|
}
|
|
|
|
VarDecl *VarDecl::getPropertyWrapperBackingProperty() const {
|
|
return getPropertyWrapperBackingPropertyInfo().backingVar;
|
|
}
|
|
|
|
VarDecl *VarDecl::getPropertyWrapperProjectionVar() const {
|
|
return getPropertyWrapperBackingPropertyInfo().projectionVar;
|
|
}
|
|
|
|
void VarDecl::visitAuxiliaryDecls(llvm::function_ref<void(VarDecl *)> visit) const {
|
|
if (getDeclContext()->isTypeContext())
|
|
return;
|
|
|
|
if (getAttrs().hasAttribute<LazyAttr>()) {
|
|
if (auto *backingVar = getLazyStorageProperty())
|
|
visit(backingVar);
|
|
}
|
|
|
|
if (getAttrs().hasAttribute<CustomAttr>()) {
|
|
if (auto *backingVar = getPropertyWrapperBackingProperty())
|
|
visit(backingVar);
|
|
|
|
if (auto *projectionVar = getPropertyWrapperProjectionVar())
|
|
visit(projectionVar);
|
|
}
|
|
}
|
|
|
|
VarDecl *VarDecl::getLazyStorageProperty() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<VarDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator,
|
|
LazyStoragePropertyRequest{mutableThis},
|
|
{});
|
|
}
|
|
|
|
bool VarDecl::isPropertyMemberwiseInitializedWithWrappedType() const {
|
|
auto customAttrs = getAttachedPropertyWrappers();
|
|
if (customAttrs.empty())
|
|
return false;
|
|
|
|
auto *PBD = getParentPatternBinding();
|
|
if (!PBD)
|
|
return false;
|
|
|
|
// If there was an initializer on the original property, initialize
|
|
// via the initial value.
|
|
if (PBD->getEqualLoc(0).isValid())
|
|
return true;
|
|
|
|
// If there was an initializer on the outermost wrapper, initialize
|
|
// via the full wrapper.
|
|
if (customAttrs[0]->getArg() != nullptr)
|
|
return false;
|
|
|
|
// Default initialization does not use a value.
|
|
if (getAttachedPropertyWrapperTypeInfo(0).defaultInit)
|
|
return false;
|
|
|
|
// If all property wrappers have a wrappedValue initializer, the property
|
|
// wrapper will be initialized that way.
|
|
return allAttachedPropertyWrappersHaveWrappedValueInit();
|
|
}
|
|
|
|
Type VarDecl::getPropertyWrapperInitValueInterfaceType() const {
|
|
auto wrapperInfo = getPropertyWrapperBackingPropertyInfo();
|
|
if (!wrapperInfo || !wrapperInfo.wrappedValuePlaceholder)
|
|
return Type();
|
|
|
|
Type valueInterfaceTy = wrapperInfo.wrappedValuePlaceholder->getType();
|
|
if (valueInterfaceTy->hasArchetype())
|
|
valueInterfaceTy = valueInterfaceTy->mapTypeOutOfContext();
|
|
|
|
return valueInterfaceTy;
|
|
}
|
|
|
|
Identifier VarDecl::getObjCPropertyName() const {
|
|
if (auto attr = getAttrs().getAttribute<ObjCAttr>()) {
|
|
if (auto name = attr->getName())
|
|
return name->getSelectorPieces()[0];
|
|
}
|
|
|
|
return getName();
|
|
}
|
|
|
|
ObjCSelector VarDecl::getDefaultObjCGetterSelector(ASTContext &ctx,
|
|
Identifier propertyName) {
|
|
return ObjCSelector(ctx, 0, propertyName);
|
|
}
|
|
|
|
|
|
ObjCSelector VarDecl::getDefaultObjCSetterSelector(ASTContext &ctx,
|
|
Identifier propertyName) {
|
|
llvm::SmallString<16> scratch;
|
|
scratch += "set";
|
|
camel_case::appendSentenceCase(scratch, propertyName.str());
|
|
|
|
return ObjCSelector(ctx, 1, ctx.getIdentifier(scratch));
|
|
}
|
|
|
|
/// If this is a simple 'let' constant, emit a note with a fixit indicating
|
|
/// that it can be rewritten to a 'var'. This is used in situations where the
|
|
/// compiler detects obvious attempts to mutate a constant.
|
|
void VarDecl::emitLetToVarNoteIfSimple(DeclContext *UseDC) const {
|
|
// If it isn't a 'let', don't touch it.
|
|
if (!isLet()) return;
|
|
|
|
// If this is the 'self' argument of a non-mutating method in a value type,
|
|
// suggest adding 'mutating' to the method.
|
|
if (isSelfParameter() && UseDC) {
|
|
// If the problematic decl is 'self', then we might be trying to mutate
|
|
// a property in a non-mutating method.
|
|
auto FD = dyn_cast_or_null<FuncDecl>(UseDC->getInnermostMethodContext());
|
|
|
|
if (FD && !FD->isMutating() && !FD->isImplicit() && FD->isInstanceMember()&&
|
|
!FD->getDeclContext()->getDeclaredInterfaceType()
|
|
->hasReferenceSemantics()) {
|
|
// Do not suggest the fix-it in implicit getters
|
|
if (auto AD = dyn_cast<AccessorDecl>(FD)) {
|
|
if (AD->isImplicitGetter())
|
|
return;
|
|
}
|
|
|
|
auto &d = getASTContext().Diags;
|
|
auto diags = d.diagnose(FD->getFuncLoc(), diag::change_to_mutating,
|
|
isa<AccessorDecl>(FD));
|
|
if (auto nonmutatingAttr =
|
|
FD->getAttrs().getAttribute<NonMutatingAttr>()) {
|
|
diags.fixItReplace(nonmutatingAttr->getLocation(), "mutating");
|
|
} else {
|
|
diags.fixItInsert(FD->getFuncLoc(), "mutating ");
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Besides self, don't suggest mutability for explicit function parameters.
|
|
if (isa<ParamDecl>(this)) return;
|
|
|
|
// Don't suggest any fixes for capture list elements.
|
|
if (isCaptureList()) return;
|
|
|
|
// If this is a normal variable definition, then we can change 'let' to 'var'.
|
|
// We even are willing to suggest this for multi-variable binding, like
|
|
// "let (a,b) = "
|
|
// since the user has to choose to apply this anyway.
|
|
if (auto *PBD = getParentPatternBinding()) {
|
|
// Don't touch generated or invalid code.
|
|
if (PBD->getLoc().isInvalid() || PBD->isImplicit())
|
|
return;
|
|
|
|
auto &d = getASTContext().Diags;
|
|
d.diagnose(PBD->getLoc(), diag::convert_let_to_var)
|
|
.fixItReplace(PBD->getLoc(), "var");
|
|
return;
|
|
}
|
|
}
|
|
|
|
ParamDecl::ParamDecl(SourceLoc specifierLoc,
|
|
SourceLoc argumentNameLoc, Identifier argumentName,
|
|
SourceLoc parameterNameLoc, Identifier parameterName,
|
|
DeclContext *dc)
|
|
: VarDecl(DeclKind::Param,
|
|
/*IsStatic*/ false,
|
|
VarDecl::Introducer::Let, parameterNameLoc, parameterName, dc,
|
|
StorageIsNotMutable),
|
|
ArgumentNameAndDestructured(argumentName, false),
|
|
ParameterNameLoc(parameterNameLoc),
|
|
ArgumentNameLoc(argumentNameLoc), SpecifierLoc(specifierLoc) {
|
|
Bits.ParamDecl.SpecifierComputed = false;
|
|
Bits.ParamDecl.defaultArgumentKind =
|
|
static_cast<unsigned>(DefaultArgumentKind::None);
|
|
}
|
|
|
|
ParamDecl *ParamDecl::cloneWithoutType(const ASTContext &Ctx, ParamDecl *PD) {
|
|
auto *Clone = new (Ctx) ParamDecl(
|
|
SourceLoc(), SourceLoc(), PD->getArgumentName(),
|
|
SourceLoc(), PD->getParameterName(), PD->getDeclContext());
|
|
Clone->DefaultValueAndFlags.setPointerAndInt(
|
|
nullptr, PD->DefaultValueAndFlags.getInt());
|
|
Clone->Bits.ParamDecl.defaultArgumentKind =
|
|
PD->Bits.ParamDecl.defaultArgumentKind;
|
|
|
|
Clone->setSpecifier(PD->getSpecifier());
|
|
Clone->setImplicitlyUnwrappedOptional(PD->isImplicitlyUnwrappedOptional());
|
|
return Clone;
|
|
}
|
|
|
|
/// Retrieve the type of 'self' for the given context.
|
|
Type DeclContext::getSelfTypeInContext() const {
|
|
assert(isTypeContext());
|
|
|
|
// For a protocol or extension thereof, the type is 'Self'.
|
|
if (getSelfProtocolDecl()) {
|
|
auto selfType = getProtocolSelfType();
|
|
if (!selfType)
|
|
return ErrorType::get(getASTContext());
|
|
return mapTypeIntoContext(selfType);
|
|
}
|
|
return getDeclaredTypeInContext();
|
|
}
|
|
|
|
/// Retrieve the interface type of 'self' for the given context.
|
|
Type DeclContext::getSelfInterfaceType() const {
|
|
assert(isTypeContext());
|
|
|
|
// For a protocol or extension thereof, the type is 'Self'.
|
|
if (getSelfProtocolDecl()) {
|
|
auto selfType = getProtocolSelfType();
|
|
if (!selfType)
|
|
return ErrorType::get(getASTContext());
|
|
return selfType;
|
|
}
|
|
return getDeclaredInterfaceType();
|
|
}
|
|
|
|
/// Return the full source range of this parameter.
|
|
SourceRange ParamDecl::getSourceRange() const {
|
|
SourceLoc APINameLoc = getArgumentNameLoc();
|
|
SourceLoc nameLoc = getNameLoc();
|
|
|
|
SourceLoc startLoc;
|
|
if (APINameLoc.isValid())
|
|
startLoc = APINameLoc;
|
|
else if (nameLoc.isValid())
|
|
startLoc = nameLoc;
|
|
else if (auto *repr = getTypeRepr())
|
|
startLoc = repr->getStartLoc();
|
|
|
|
if (startLoc.isInvalid())
|
|
return SourceRange();
|
|
|
|
// It would be nice to extend the front of the range to show where inout is,
|
|
// but we don't have that location info. Extend the back of the range to the
|
|
// location of the default argument, or the typeloc if they are valid.
|
|
if (auto expr = getStructuralDefaultExpr()) {
|
|
auto endLoc = expr->getEndLoc();
|
|
if (endLoc.isValid())
|
|
return SourceRange(startLoc, endLoc);
|
|
}
|
|
|
|
// If the typeloc has a valid location, use it to end the range.
|
|
if (auto typeRepr = getTypeRepr()) {
|
|
auto endLoc = typeRepr->getEndLoc();
|
|
if (endLoc.isValid())
|
|
return SourceRange(startLoc, endLoc);
|
|
}
|
|
|
|
// The name has a location we can use.
|
|
if (nameLoc.isValid())
|
|
return SourceRange(startLoc, nameLoc);
|
|
|
|
return startLoc;
|
|
}
|
|
|
|
bool ParamDecl::isNonEphemeral() const {
|
|
if (getAttrs().hasAttribute<NonEphemeralAttr>())
|
|
return true;
|
|
|
|
// Only enum element parameters are non-ephemeral without '@_nonEphemeral'.
|
|
auto *parentDecl = getDeclContext()->getAsDecl();
|
|
if (!parentDecl || !isa<EnumElementDecl>(parentDecl))
|
|
return false;
|
|
|
|
// Only pointer parameters can be non-ephemeral.
|
|
auto ty = getInterfaceType();
|
|
if (!ty->lookThroughSingleOptionalType()->getAnyPointerElementType())
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
void ParamDecl::setNonEphemeralIfPossible() {
|
|
assert(hasInterfaceType() && "Must be pre-typechecked.");
|
|
// Don't apply the attribute if this isn't a pointer param.
|
|
auto type = getInterfaceType();
|
|
if (!type->lookThroughSingleOptionalType()->getAnyPointerElementType())
|
|
return;
|
|
|
|
if (!getAttrs().hasAttribute<NonEphemeralAttr>()) {
|
|
auto &ctx = getASTContext();
|
|
getAttrs().add(new (ctx) NonEphemeralAttr(/*IsImplicit*/ true));
|
|
}
|
|
}
|
|
|
|
Type ParamDecl::getVarargBaseTy(Type VarArgT) {
|
|
TypeBase *T = VarArgT.getPointer();
|
|
if (auto *AT = dyn_cast<ArraySliceType>(T))
|
|
return AT->getBaseType();
|
|
if (auto *BGT = dyn_cast<BoundGenericType>(T)) {
|
|
// It's the stdlib Array<T>.
|
|
return BGT->getGenericArgs()[0];
|
|
}
|
|
return T;
|
|
}
|
|
|
|
AnyFunctionType::Param ParamDecl::toFunctionParam(Type type) const {
|
|
if (!type)
|
|
type = getInterfaceType();
|
|
|
|
if (isVariadic())
|
|
type = ParamDecl::getVarargBaseTy(type);
|
|
|
|
auto label = getArgumentName();
|
|
auto flags = ParameterTypeFlags::fromParameterType(
|
|
type, isVariadic(), isAutoClosure(), isNonEphemeral(),
|
|
getValueOwnership(),
|
|
/*isNoDerivative*/ false);
|
|
return AnyFunctionType::Param(type, label, flags);
|
|
}
|
|
|
|
Optional<Initializer *> ParamDecl::getCachedDefaultArgumentInitContext() const {
|
|
if (auto *defaultInfo = DefaultValueAndFlags.getPointer())
|
|
if (auto *init = defaultInfo->InitContextAndIsTypeChecked.getPointer())
|
|
return init;
|
|
|
|
return None;
|
|
}
|
|
|
|
Initializer *ParamDecl::getDefaultArgumentInitContext() const {
|
|
// If this param doesn't need a context, don't bother kicking off a request.
|
|
if (!hasDefaultExpr() && !getStoredProperty())
|
|
return nullptr;
|
|
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<ParamDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, DefaultArgumentInitContextRequest{mutableThis}, nullptr);
|
|
}
|
|
|
|
bool ParamDecl::hasDefaultExpr() const {
|
|
switch (getDefaultArgumentKind()) {
|
|
case DefaultArgumentKind::None:
|
|
case DefaultArgumentKind::Inherited:
|
|
case DefaultArgumentKind::StoredProperty:
|
|
return false;
|
|
case DefaultArgumentKind::Normal:
|
|
#define MAGIC_IDENTIFIER(NAME, STRING, SYNTAX_KIND) \
|
|
case DefaultArgumentKind::NAME:
|
|
#include "swift/AST/MagicIdentifierKinds.def"
|
|
case DefaultArgumentKind::NilLiteral:
|
|
case DefaultArgumentKind::EmptyArray:
|
|
case DefaultArgumentKind::EmptyDictionary:
|
|
// Check if we have a structural default expr. This ensures we return false
|
|
// for deserialized decls.
|
|
return getStructuralDefaultExpr();
|
|
}
|
|
llvm_unreachable("Unhandled case in switch");
|
|
}
|
|
|
|
bool ParamDecl::hasCallerSideDefaultExpr() const {
|
|
switch (getDefaultArgumentKind()) {
|
|
case DefaultArgumentKind::None:
|
|
case DefaultArgumentKind::Inherited:
|
|
case DefaultArgumentKind::StoredProperty:
|
|
case DefaultArgumentKind::Normal:
|
|
return false;
|
|
#define MAGIC_IDENTIFIER(NAME, STRING, SYNTAX_KIND) \
|
|
case DefaultArgumentKind::NAME:
|
|
#include "swift/AST/MagicIdentifierKinds.def"
|
|
case DefaultArgumentKind::NilLiteral:
|
|
case DefaultArgumentKind::EmptyArray:
|
|
case DefaultArgumentKind::EmptyDictionary:
|
|
return true;
|
|
}
|
|
llvm_unreachable("invalid default argument kind");
|
|
}
|
|
|
|
Expr *ParamDecl::getTypeCheckedDefaultExpr() const {
|
|
// Don't kick off a request if we know there's no default expr. The only
|
|
// exception is for inherited default args which we need to perform a couple
|
|
// of semantic checks for.
|
|
if (!hasDefaultExpr() &&
|
|
getDefaultArgumentKind() != DefaultArgumentKind::Inherited) {
|
|
return nullptr;
|
|
}
|
|
|
|
auto &ctx = getASTContext();
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, DefaultArgumentExprRequest{const_cast<ParamDecl *>(this)},
|
|
new (ctx) ErrorExpr(getSourceRange(), ErrorType::get(ctx)));
|
|
}
|
|
|
|
void ParamDecl::setDefaultExpr(Expr *E, bool isTypeChecked) {
|
|
if (!DefaultValueAndFlags.getPointer()) {
|
|
if (!E) return;
|
|
|
|
DefaultValueAndFlags.setPointer(
|
|
getASTContext().Allocate<StoredDefaultArgument>());
|
|
}
|
|
|
|
auto *defaultInfo = DefaultValueAndFlags.getPointer();
|
|
assert(defaultInfo->DefaultArg.isNull() ||
|
|
defaultInfo->DefaultArg.is<Expr *>());
|
|
|
|
if (!isTypeChecked) {
|
|
assert(!defaultInfo->InitContextAndIsTypeChecked.getInt() &&
|
|
"Can't overwrite type-checked default with un-type-checked default");
|
|
}
|
|
defaultInfo->DefaultArg = E;
|
|
defaultInfo->InitContextAndIsTypeChecked.setInt(isTypeChecked);
|
|
}
|
|
|
|
void ParamDecl::setStoredProperty(VarDecl *var) {
|
|
if (!DefaultValueAndFlags.getPointer()) {
|
|
if (!var) return;
|
|
|
|
DefaultValueAndFlags.setPointer(
|
|
getASTContext().Allocate<StoredDefaultArgument>());
|
|
}
|
|
|
|
auto *defaultInfo = DefaultValueAndFlags.getPointer();
|
|
assert(defaultInfo->DefaultArg.isNull() ||
|
|
defaultInfo->DefaultArg.is<VarDecl *>());
|
|
defaultInfo->DefaultArg = var;
|
|
}
|
|
|
|
Type ValueDecl::getResultBuilderType() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<ValueDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
ResultBuilderTypeRequest{mutableThis},
|
|
Type());
|
|
}
|
|
|
|
CustomAttr *ValueDecl::getAttachedResultBuilder() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<ValueDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
AttachedResultBuilderRequest{mutableThis},
|
|
nullptr);
|
|
}
|
|
|
|
void ParamDecl::setDefaultArgumentInitContext(Initializer *initContext) {
|
|
auto oldContext = getCachedDefaultArgumentInitContext();
|
|
assert((!oldContext || oldContext == initContext) &&
|
|
"Cannot change init context after setting");
|
|
|
|
auto *defaultInfo = DefaultValueAndFlags.getPointer();
|
|
assert(defaultInfo);
|
|
defaultInfo->InitContextAndIsTypeChecked.setPointer(initContext);
|
|
}
|
|
|
|
void ParamDecl::setDefaultArgumentCaptureInfo(CaptureInfo captures) {
|
|
assert(DefaultValueAndFlags.getPointer());
|
|
DefaultValueAndFlags.getPointer()->Captures = captures;
|
|
}
|
|
|
|
PropertyWrapperValuePlaceholderExpr *
|
|
swift::findWrappedValuePlaceholder(Expr *init) {
|
|
class Walker : public ASTWalker {
|
|
public:
|
|
PropertyWrapperValuePlaceholderExpr *placeholder = nullptr;
|
|
|
|
virtual std::pair<bool, Expr *> walkToExprPre(Expr *E) override {
|
|
if (placeholder)
|
|
return { false, E };
|
|
|
|
if (auto *value = dyn_cast<PropertyWrapperValuePlaceholderExpr>(E)) {
|
|
placeholder = value;
|
|
return { false, value };
|
|
}
|
|
|
|
return { true, E };
|
|
}
|
|
} walker;
|
|
init->walk(walker);
|
|
|
|
return walker.placeholder;
|
|
}
|
|
|
|
/// Writes a tuple expression where each element is either `nil` or another such
|
|
/// tuple of nils.
|
|
/// This comes up when printing default arguments for memberwise initializers
|
|
/// that were created implicitly.
|
|
/// For example, this var:
|
|
/// ```
|
|
/// var x: (Int?, (Int?, Int?, ()))
|
|
/// ```
|
|
/// will produce `(nil, (nil, nil, ()))`
|
|
static void writeTupleOfNils(TupleType *type, llvm::raw_ostream &os) {
|
|
os << '(';
|
|
for (unsigned i = 0; i < type->getNumElements(); ++i) {
|
|
auto &elt = type->getElement(i);
|
|
if (elt.hasName()) {
|
|
os << elt.getName().str() << ": ";
|
|
}
|
|
|
|
if (elt.getType()->getOptionalObjectType()) {
|
|
os << "nil";
|
|
} else {
|
|
writeTupleOfNils(elt.getType()->castTo<TupleType>(), os);
|
|
}
|
|
if (i < type->getNumElements() - 1) {
|
|
os << ", ";
|
|
}
|
|
}
|
|
os << ')';
|
|
}
|
|
|
|
/// Determines if the given type is a potentially nested tuple of optional
|
|
/// types.
|
|
static bool isTupleOfOptionals(Type type) {
|
|
auto tuple = type->getAs<TupleType>();
|
|
if (!tuple) return false;
|
|
for (auto elt : tuple->getElementTypes())
|
|
if (!elt->getOptionalObjectType() && !isTupleOfOptionals(elt))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
StringRef
|
|
ParamDecl::getDefaultValueStringRepresentation(
|
|
SmallVectorImpl<char> &scratch) const {
|
|
switch (getDefaultArgumentKind()) {
|
|
case DefaultArgumentKind::None:
|
|
llvm_unreachable("called on a ParamDecl with no default value");
|
|
case DefaultArgumentKind::Normal: {
|
|
assert(DefaultValueAndFlags.getPointer() &&
|
|
"default value not provided yet");
|
|
auto existing = DefaultValueAndFlags.getPointer()->StringRepresentation;
|
|
if (!existing.empty())
|
|
return existing;
|
|
|
|
assert(hasDefaultExpr()
|
|
&& "Normal default argument with no default expression?!");
|
|
return extractInlinableText(getASTContext().SourceMgr,
|
|
getStructuralDefaultExpr(), scratch);
|
|
}
|
|
case DefaultArgumentKind::StoredProperty: {
|
|
assert(DefaultValueAndFlags.getPointer() &&
|
|
"default value not provided yet");
|
|
auto existing = DefaultValueAndFlags.getPointer()->StringRepresentation;
|
|
if (!existing.empty())
|
|
return existing;
|
|
auto var = getStoredProperty();
|
|
|
|
if (auto original = var->getOriginalWrappedProperty()) {
|
|
auto wrapperAttrs = original->getAttachedPropertyWrappers();
|
|
if (wrapperAttrs.size() > 0) {
|
|
auto attr = wrapperAttrs.front();
|
|
if (auto arg = attr->getArg()) {
|
|
SourceRange fullRange(attr->getTypeRepr()->getSourceRange().Start,
|
|
arg->getEndLoc());
|
|
auto charRange = Lexer::getCharSourceRangeFromSourceRange(
|
|
getASTContext().SourceMgr, fullRange);
|
|
return getASTContext().SourceMgr.extractText(charRange);
|
|
}
|
|
|
|
// If there is no initial wrapped value, we used the default initializer.
|
|
Expr *wrappedValue = nullptr;
|
|
if (auto *parentInit = original->getParentInitializer())
|
|
if (auto *placeholder = findWrappedValuePlaceholder(parentInit))
|
|
wrappedValue = placeholder->getOriginalWrappedValue();
|
|
|
|
if (!wrappedValue) {
|
|
if (auto type = original->getPropertyWrapperBackingPropertyType()) {
|
|
if (auto nominal = type->getAnyNominal()) {
|
|
scratch.clear();
|
|
auto typeName = nominal->getName().str();
|
|
scratch.append(typeName.begin(), typeName.end());
|
|
scratch.push_back('(');
|
|
scratch.push_back(')');
|
|
return {scratch.data(), scratch.size()};
|
|
}
|
|
}
|
|
|
|
return ".init()";
|
|
}
|
|
|
|
auto &sourceMgr = getASTContext().SourceMgr;
|
|
return extractInlinableText(sourceMgr, wrappedValue, scratch);
|
|
}
|
|
}
|
|
|
|
auto init = var->getParentInitializer();
|
|
if (!init || !init->getSourceRange().isValid()) {
|
|
// Special case: There are two possible times where we will synthesize a
|
|
// default initial value for a stored property: if the type
|
|
// is Optional, or if it's a (potentially nested) tuple of
|
|
// all Optional elements. If it's Optional, we'll set
|
|
// the DefaultArgumentKind to NilLiteral, but if we're still
|
|
// handling a StoredProperty, then we know it's a tuple.
|
|
if (isTupleOfOptionals(getInterfaceType())) {
|
|
llvm::raw_svector_ostream os(scratch);
|
|
writeTupleOfNils(getInterfaceType()->castTo<TupleType>(), os);
|
|
return os.str();
|
|
}
|
|
return "<<empty>>";
|
|
}
|
|
|
|
return extractInlinableText(getASTContext().SourceMgr,
|
|
init,
|
|
scratch);
|
|
}
|
|
case DefaultArgumentKind::Inherited: return "super";
|
|
#define MAGIC_IDENTIFIER(NAME, STRING, SYNTAX_KIND) \
|
|
case DefaultArgumentKind::NAME: return STRING;
|
|
#include "swift/AST/MagicIdentifierKinds.def"
|
|
case DefaultArgumentKind::NilLiteral: return "nil";
|
|
case DefaultArgumentKind::EmptyArray: return "[]";
|
|
case DefaultArgumentKind::EmptyDictionary: return "[:]";
|
|
}
|
|
llvm_unreachable("unhandled kind");
|
|
}
|
|
|
|
void
|
|
ParamDecl::setDefaultValueStringRepresentation(StringRef stringRepresentation) {
|
|
assert(getDefaultArgumentKind() == DefaultArgumentKind::Normal ||
|
|
getDefaultArgumentKind() == DefaultArgumentKind::StoredProperty);
|
|
assert(!stringRepresentation.empty());
|
|
|
|
if (!DefaultValueAndFlags.getPointer()) {
|
|
DefaultValueAndFlags.setPointer(
|
|
getASTContext().Allocate<StoredDefaultArgument>());
|
|
}
|
|
|
|
DefaultValueAndFlags.getPointer()->StringRepresentation =
|
|
stringRepresentation;
|
|
}
|
|
|
|
void DefaultArgumentInitializer::changeFunction(
|
|
DeclContext *parent, ParameterList *paramList) {
|
|
if (parent->isLocalContext()) {
|
|
setParent(parent);
|
|
}
|
|
|
|
auto param = paramList->get(getIndex());
|
|
if (param->hasDefaultExpr() || param->getStoredProperty())
|
|
param->setDefaultArgumentInitContext(this);
|
|
}
|
|
|
|
/// Determine whether the given Swift type is an integral type, i.e.,
|
|
/// a type that wraps a builtin integer.
|
|
static bool isIntegralType(Type type) {
|
|
// Consider structs in the standard library module that wrap a builtin
|
|
// integer type to be integral types.
|
|
if (auto structTy = type->getAs<StructType>()) {
|
|
auto structDecl = structTy->getDecl();
|
|
const DeclContext *DC = structDecl->getDeclContext();
|
|
if (!DC->isModuleScopeContext() || !DC->getParentModule()->isStdlibModule())
|
|
return false;
|
|
|
|
// Find the single ivar.
|
|
VarDecl *singleVar = nullptr;
|
|
for (auto member : structDecl->getStoredProperties()) {
|
|
if (singleVar)
|
|
return false;
|
|
singleVar = member;
|
|
}
|
|
|
|
if (!singleVar)
|
|
return false;
|
|
|
|
// Check whether it has integer type.
|
|
return singleVar->getInterfaceType()->is<BuiltinIntegerType>();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void SubscriptDecl::setIndices(ParameterList *p) {
|
|
Indices = p;
|
|
|
|
if (Indices)
|
|
Indices->setDeclContextOfParamDecls(this);
|
|
}
|
|
|
|
Type SubscriptDecl::getElementInterfaceType() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<SubscriptDecl *>(this);
|
|
if (auto type = evaluateOrDefault(ctx.evaluator,
|
|
ResultTypeRequest{mutableThis},
|
|
Type()))
|
|
return type;
|
|
return ErrorType::get(ctx);
|
|
}
|
|
|
|
ObjCSubscriptKind SubscriptDecl::getObjCSubscriptKind() const {
|
|
// If the index type is an integral type, we have an indexed
|
|
// subscript.
|
|
if (auto funcTy = getInterfaceType()->getAs<AnyFunctionType>()) {
|
|
auto params = funcTy->getParams();
|
|
if (params.size() == 1)
|
|
if (isIntegralType(params[0].getPlainType()))
|
|
return ObjCSubscriptKind::Indexed;
|
|
}
|
|
|
|
// If the index type is an object type in Objective-C, we have a
|
|
// keyed subscript.
|
|
return ObjCSubscriptKind::Keyed;
|
|
}
|
|
|
|
void SubscriptDecl::setElementInterfaceType(Type type) {
|
|
getASTContext().evaluator.cacheOutput(ResultTypeRequest{this},
|
|
std::move(type));
|
|
}
|
|
|
|
SubscriptDecl *
|
|
SubscriptDecl::createDeserialized(ASTContext &Context, DeclName Name,
|
|
StaticSpellingKind StaticSpelling,
|
|
Type ElementTy, DeclContext *Parent,
|
|
GenericParamList *GenericParams) {
|
|
assert(ElementTy && "Deserialized element type must not be null");
|
|
auto *const SD = new (Context)
|
|
SubscriptDecl(Name, SourceLoc(), StaticSpelling, SourceLoc(), nullptr,
|
|
SourceLoc(), /*ElementTyR=*/nullptr, Parent, GenericParams);
|
|
SD->setElementInterfaceType(ElementTy);
|
|
return SD;
|
|
}
|
|
|
|
SubscriptDecl *SubscriptDecl::create(ASTContext &Context, DeclName Name,
|
|
SourceLoc StaticLoc,
|
|
StaticSpellingKind StaticSpelling,
|
|
SourceLoc SubscriptLoc,
|
|
ParameterList *Indices, SourceLoc ArrowLoc,
|
|
TypeRepr *ElementTyR, DeclContext *Parent,
|
|
GenericParamList *GenericParams) {
|
|
assert(ElementTyR);
|
|
auto *const SD = new (Context)
|
|
SubscriptDecl(Name, StaticLoc, StaticSpelling, SubscriptLoc, Indices,
|
|
ArrowLoc, ElementTyR, Parent, GenericParams);
|
|
return SD;
|
|
}
|
|
|
|
SubscriptDecl *SubscriptDecl::createImported(ASTContext &Context, DeclName Name,
|
|
SourceLoc SubscriptLoc,
|
|
ParameterList *Indices,
|
|
SourceLoc ArrowLoc, Type ElementTy,
|
|
DeclContext *Parent,
|
|
ClangNode ClangN) {
|
|
assert(ClangN && ElementTy);
|
|
auto *DeclPtr = allocateMemoryForDecl<SubscriptDecl>(
|
|
Context, sizeof(SubscriptDecl), /*includeSpaceForClangNode=*/true);
|
|
|
|
auto *const SD = ::new (DeclPtr)
|
|
SubscriptDecl(Name, SourceLoc(), StaticSpellingKind::None, SubscriptLoc,
|
|
Indices, ArrowLoc, /*ElementTyR=*/nullptr, Parent,
|
|
/*GenericParams=*/nullptr);
|
|
SD->setElementInterfaceType(ElementTy);
|
|
SD->setClangNode(ClangN);
|
|
return SD;
|
|
}
|
|
|
|
SourceRange SubscriptDecl::getSourceRange() const {
|
|
return {getSubscriptLoc(), getEndLoc()};
|
|
}
|
|
|
|
SourceRange SubscriptDecl::getSignatureSourceRange() const {
|
|
if (isImplicit())
|
|
return SourceRange();
|
|
if (auto Indices = getIndices()) {
|
|
auto End = Indices->getEndLoc();
|
|
if (End.isValid()) {
|
|
return SourceRange(getSubscriptLoc(), End);
|
|
}
|
|
}
|
|
return getSubscriptLoc();
|
|
}
|
|
|
|
DeclName AbstractFunctionDecl::getEffectiveFullName() const {
|
|
if (getName())
|
|
return getName();
|
|
|
|
if (auto accessor = dyn_cast<AccessorDecl>(this)) {
|
|
auto &ctx = getASTContext();
|
|
auto storage = accessor->getStorage();
|
|
auto subscript = dyn_cast<SubscriptDecl>(storage);
|
|
switch (accessor->getAccessorKind()) {
|
|
// These don't have any extra implicit parameters.
|
|
case AccessorKind::Address:
|
|
case AccessorKind::MutableAddress:
|
|
case AccessorKind::Get:
|
|
case AccessorKind::Read:
|
|
case AccessorKind::Modify:
|
|
return subscript ? subscript->getName()
|
|
: DeclName(ctx, storage->getBaseName(),
|
|
ArrayRef<Identifier>());
|
|
|
|
case AccessorKind::Set:
|
|
case AccessorKind::DidSet:
|
|
case AccessorKind::WillSet: {
|
|
SmallVector<Identifier, 4> argNames;
|
|
// The implicit value/buffer parameter.
|
|
argNames.push_back(Identifier());
|
|
// The subscript index parameters.
|
|
if (subscript) {
|
|
argNames.append(subscript->getName().getArgumentNames().begin(),
|
|
subscript->getName().getArgumentNames().end());
|
|
}
|
|
return DeclName(ctx, storage->getBaseName(), argNames);
|
|
}
|
|
}
|
|
llvm_unreachable("bad accessor kind");
|
|
}
|
|
|
|
return DeclName();
|
|
}
|
|
|
|
ParameterList *swift::getParameterList(ValueDecl *source) {
|
|
if (auto *AFD = dyn_cast<AbstractFunctionDecl>(source)) {
|
|
return AFD->getParameters();
|
|
} else if (auto *EED = dyn_cast<EnumElementDecl>(source)) {
|
|
return EED->getParameterList();
|
|
} else if (auto *SD = dyn_cast<SubscriptDecl>(source)) {
|
|
return SD->getIndices();
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
const ParamDecl *swift::getParameterAt(const ValueDecl *source,
|
|
unsigned index) {
|
|
if (auto *params = getParameterList(const_cast<ValueDecl *>(source))) {
|
|
return params->get(index);
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
Type AbstractFunctionDecl::getMethodInterfaceType() const {
|
|
assert(getDeclContext()->isTypeContext());
|
|
auto Ty = getInterfaceType();
|
|
if (Ty->hasError())
|
|
return ErrorType::get(getASTContext());
|
|
return Ty->castTo<AnyFunctionType>()->getResult();
|
|
}
|
|
|
|
bool AbstractFunctionDecl::hasDynamicSelfResult() const {
|
|
if (auto *funcDecl = dyn_cast<FuncDecl>(this))
|
|
return funcDecl->getResultInterfaceType()->hasDynamicSelfType();
|
|
return isa<ConstructorDecl>(this);
|
|
}
|
|
|
|
bool AbstractFunctionDecl::argumentNameIsAPIByDefault() const {
|
|
// Initializers have argument labels.
|
|
if (isa<ConstructorDecl>(this))
|
|
return true;
|
|
|
|
if (auto func = dyn_cast<FuncDecl>(this)) {
|
|
// Operators do not have argument labels.
|
|
if (func->isOperator())
|
|
return false;
|
|
|
|
// Other functions have argument labels for all arguments
|
|
return true;
|
|
}
|
|
|
|
assert(isa<DestructorDecl>(this));
|
|
return false;
|
|
}
|
|
|
|
bool AbstractFunctionDecl::isConcurrent() const {
|
|
return getAttrs().hasAttribute<ConcurrentAttr>();
|
|
}
|
|
|
|
bool AbstractFunctionDecl::isAsyncHandler() const {
|
|
auto func = dyn_cast<FuncDecl>(this);
|
|
if (!func)
|
|
return false;
|
|
|
|
auto mutableFunc = const_cast<FuncDecl *>(func);
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
IsAsyncHandlerRequest{mutableFunc},
|
|
false);
|
|
}
|
|
|
|
bool AbstractFunctionDecl::canBeAsyncHandler() const {
|
|
auto func = dyn_cast<FuncDecl>(this);
|
|
if (!func)
|
|
return false;
|
|
|
|
auto mutableFunc = const_cast<FuncDecl *>(func);
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
CanBeAsyncHandlerRequest{mutableFunc},
|
|
false);
|
|
}
|
|
|
|
BraceStmt *AbstractFunctionDecl::getBody(bool canSynthesize) const {
|
|
if ((getBodyKind() == BodyKind::Synthesize ||
|
|
getBodyKind() == BodyKind::Unparsed) &&
|
|
!canSynthesize)
|
|
return nullptr;
|
|
|
|
ASTContext &ctx = getASTContext();
|
|
|
|
// Don't allow getBody() to trigger parsing of an unparsed body containing the
|
|
// code completion location.
|
|
if (getBodyKind() == BodyKind::Unparsed &&
|
|
ctx.SourceMgr.rangeContainsCodeCompletionLoc(getBodySourceRange())) {
|
|
return nullptr;
|
|
}
|
|
|
|
auto mutableThis = const_cast<AbstractFunctionDecl *>(this);
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
ParseAbstractFunctionBodyRequest{mutableThis},
|
|
nullptr);
|
|
}
|
|
|
|
BraceStmt *AbstractFunctionDecl::getTypecheckedBody() const {
|
|
auto &ctx = getASTContext();
|
|
auto *mutableThis = const_cast<AbstractFunctionDecl *>(this);
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, TypeCheckFunctionBodyRequest{mutableThis}, nullptr);
|
|
}
|
|
|
|
void AbstractFunctionDecl::setBody(BraceStmt *S, BodyKind NewBodyKind) {
|
|
assert(getBodyKind() != BodyKind::Skipped &&
|
|
"cannot set a body if it was skipped");
|
|
|
|
Body = S;
|
|
setBodyKind(NewBodyKind);
|
|
|
|
// Need to recompute init body kind.
|
|
if (NewBodyKind < BodyKind::TypeChecked) {
|
|
if (auto *ctor = dyn_cast<ConstructorDecl>(this))
|
|
ctor->clearCachedDelegatingOrChainedInitKind();
|
|
}
|
|
}
|
|
|
|
void AbstractFunctionDecl::setBodyToBeReparsed(SourceRange bodyRange) {
|
|
assert(bodyRange.isValid());
|
|
assert(getBodyKind() == BodyKind::Unparsed ||
|
|
getBodyKind() == BodyKind::Parsed ||
|
|
getBodyKind() == BodyKind::TypeChecked);
|
|
assert(getASTContext().SourceMgr.rangeContainsTokenLoc(
|
|
bodyRange, getASTContext().SourceMgr.getCodeCompletionLoc()) &&
|
|
"This function is only intended to be used for code completion");
|
|
|
|
keepOriginalBodySourceRange();
|
|
BodyRange = bodyRange;
|
|
setBodyKind(BodyKind::Unparsed);
|
|
}
|
|
|
|
SourceRange AbstractFunctionDecl::getBodySourceRange() const {
|
|
switch (getBodyKind()) {
|
|
case BodyKind::None:
|
|
case BodyKind::MemberwiseInitializer:
|
|
case BodyKind::Deserialized:
|
|
case BodyKind::Synthesize:
|
|
return SourceRange();
|
|
|
|
case BodyKind::Parsed:
|
|
case BodyKind::TypeChecked:
|
|
if (auto body = getBody(/*canSynthesize=*/false))
|
|
return body->getSourceRange();
|
|
|
|
return SourceRange();
|
|
|
|
case BodyKind::Skipped:
|
|
case BodyKind::Unparsed:
|
|
return BodyRange;
|
|
}
|
|
llvm_unreachable("bad BodyKind");
|
|
}
|
|
|
|
SourceRange AbstractFunctionDecl::getSignatureSourceRange() const {
|
|
if (isImplicit())
|
|
return SourceRange();
|
|
|
|
auto paramList = getParameters();
|
|
|
|
auto endLoc = paramList->getSourceRange().End;
|
|
if (endLoc.isValid())
|
|
return SourceRange(getNameLoc(), endLoc);
|
|
|
|
return getNameLoc();
|
|
}
|
|
|
|
ObjCSelector
|
|
AbstractFunctionDecl::getObjCSelector(DeclName preferredName,
|
|
bool skipIsObjCResolution) const {
|
|
// FIXME: Forces computation of the Objective-C selector.
|
|
if (!skipIsObjCResolution)
|
|
(void)isObjC();
|
|
|
|
// If there is an @objc attribute with a name, use that name.
|
|
auto *objc = getAttrs().getAttribute<ObjCAttr>();
|
|
if (auto name = getNameFromObjcAttribute(objc, preferredName)) {
|
|
return *name;
|
|
}
|
|
|
|
auto &ctx = getASTContext();
|
|
|
|
StringRef baseNameStr;
|
|
if (auto destructor = dyn_cast<DestructorDecl>(this)) {
|
|
return destructor->getObjCSelector();
|
|
} else if (auto func = dyn_cast<FuncDecl>(this)) {
|
|
// Otherwise cast this to be able to access getName()
|
|
baseNameStr = func->getBaseIdentifier().str();
|
|
} else if (isa<ConstructorDecl>(this)) {
|
|
baseNameStr = "init";
|
|
} else {
|
|
llvm_unreachable("Unknown subclass of AbstractFunctionDecl");
|
|
}
|
|
|
|
auto argNames = getName().getArgumentNames();
|
|
|
|
// Use the preferred name if specified
|
|
if (preferredName) {
|
|
// Return invalid selector if argument count doesn't match.
|
|
if (argNames.size() != preferredName.getArgumentNames().size()) {
|
|
return ObjCSelector();
|
|
}
|
|
baseNameStr = preferredName.getBaseName().userFacingName();
|
|
argNames = preferredName.getArgumentNames();
|
|
}
|
|
|
|
auto baseName = ctx.getIdentifier(baseNameStr);
|
|
|
|
if (auto accessor = dyn_cast<AccessorDecl>(this)) {
|
|
// For a getter or setter, go through the variable or subscript decl.
|
|
auto asd = accessor->getStorage();
|
|
if (accessor->isGetter())
|
|
return asd->getObjCGetterSelector(baseName);
|
|
if (accessor->isSetter())
|
|
return asd->getObjCSetterSelector(baseName);
|
|
}
|
|
|
|
// If this is a zero-parameter initializer with a long selector
|
|
// name, form that selector.
|
|
auto ctor = dyn_cast<ConstructorDecl>(this);
|
|
if (ctor && ctor->isObjCZeroParameterWithLongSelector()) {
|
|
Identifier firstName = argNames[0];
|
|
llvm::SmallString<16> scratch;
|
|
scratch += "init";
|
|
|
|
// If the first argument name doesn't start with a preposition, add "with".
|
|
if (!isPreposition(camel_case::getFirstWord(firstName.str()))) {
|
|
camel_case::appendSentenceCase(scratch, "With");
|
|
}
|
|
|
|
camel_case::appendSentenceCase(scratch, firstName.str());
|
|
return ObjCSelector(ctx, 0, ctx.getIdentifier(scratch));
|
|
}
|
|
|
|
// The number of selector pieces we'll have.
|
|
Optional<ForeignAsyncConvention> asyncConvention
|
|
= getForeignAsyncConvention();
|
|
Optional<ForeignErrorConvention> errorConvention
|
|
= getForeignErrorConvention();
|
|
unsigned numSelectorPieces
|
|
= argNames.size() + (asyncConvention.hasValue() ? 1 : 0)
|
|
+ (errorConvention.hasValue() ? 1 : 0);
|
|
|
|
// If we have no arguments, it's a nullary selector.
|
|
if (numSelectorPieces == 0) {
|
|
return ObjCSelector(ctx, 0, baseName);
|
|
}
|
|
|
|
// If it's a unary selector with no name for the first argument, we're done.
|
|
if (numSelectorPieces == 1 && argNames.size() == 1 && argNames[0].empty()) {
|
|
return ObjCSelector(ctx, 1, baseName);
|
|
}
|
|
|
|
/// Collect the selector pieces.
|
|
SmallVector<Identifier, 4> selectorPieces;
|
|
selectorPieces.reserve(numSelectorPieces);
|
|
bool didStringManipulation = false;
|
|
unsigned argIndex = 0;
|
|
for (unsigned piece = 0; piece != numSelectorPieces; ++piece) {
|
|
if (piece > 0) {
|
|
// If we have an async convention that inserts a completion handler
|
|
// parameter here, add "completionHandler".
|
|
if (asyncConvention &&
|
|
piece == asyncConvention->completionHandlerParamIndex()) {
|
|
selectorPieces.push_back(ctx.getIdentifier("completionHandler"));
|
|
continue;
|
|
}
|
|
|
|
// If we have an error convention that inserts an error parameter
|
|
// here, add "error".
|
|
if (errorConvention &&
|
|
piece == errorConvention->getErrorParameterIndex()) {
|
|
selectorPieces.push_back(ctx.Id_error);
|
|
continue;
|
|
}
|
|
|
|
// Selector pieces beyond the first are simple.
|
|
selectorPieces.push_back(argNames[argIndex++]);
|
|
continue;
|
|
}
|
|
|
|
// For the first selector piece, attach either the first parameter,
|
|
// "withCompletionHandler", or "AndReturnError" to the base name,
|
|
// if appropriate.
|
|
auto firstPiece = baseName;
|
|
llvm::SmallString<32> scratch;
|
|
scratch += firstPiece.str();
|
|
if (asyncConvention &&
|
|
piece == asyncConvention->completionHandlerParamIndex()) {
|
|
// The completion handler is first; append "WithCompletionHandler".
|
|
camel_case::appendSentenceCase(scratch, "WithCompletionHandler");
|
|
|
|
firstPiece = ctx.getIdentifier(scratch);
|
|
didStringManipulation = true;
|
|
} else if (errorConvention &&
|
|
piece == errorConvention->getErrorParameterIndex()) {
|
|
// The error is first; append "AndReturnError".
|
|
camel_case::appendSentenceCase(scratch, "AndReturnError");
|
|
|
|
firstPiece = ctx.getIdentifier(scratch);
|
|
didStringManipulation = true;
|
|
} else if (!argNames[argIndex].empty()) {
|
|
// If the first argument name doesn't start with a preposition, and the
|
|
// method name doesn't end with a preposition, add "with".
|
|
auto firstName = argNames[argIndex++];
|
|
if (!isPreposition(camel_case::getFirstWord(firstName.str())) &&
|
|
!isPreposition(camel_case::getLastWord(firstPiece.str()))) {
|
|
camel_case::appendSentenceCase(scratch, "With");
|
|
}
|
|
|
|
camel_case::appendSentenceCase(scratch, firstName.str());
|
|
firstPiece = ctx.getIdentifier(scratch);
|
|
didStringManipulation = true;
|
|
} else {
|
|
++argIndex;
|
|
}
|
|
|
|
selectorPieces.push_back(firstPiece);
|
|
}
|
|
assert(argIndex == argNames.size());
|
|
|
|
// Form the result.
|
|
auto result = ObjCSelector(ctx, selectorPieces.size(), selectorPieces);
|
|
|
|
// If we did any string manipulation, cache the result. We don't want to
|
|
// do that again.
|
|
if (didStringManipulation && objc && !preferredName)
|
|
const_cast<ObjCAttr *>(objc)->setName(result, /*implicit=*/true);
|
|
|
|
return result;
|
|
}
|
|
|
|
bool AbstractFunctionDecl::isObjCInstanceMethod() const {
|
|
return isInstanceMember() || isa<ConstructorDecl>(this);
|
|
}
|
|
|
|
bool AbstractFunctionDecl::needsNewVTableEntry() const {
|
|
auto &ctx = getASTContext();
|
|
return evaluateOrDefault(
|
|
ctx.evaluator,
|
|
NeedsNewVTableEntryRequest{const_cast<AbstractFunctionDecl *>(this)},
|
|
false);
|
|
}
|
|
|
|
ParamDecl *AbstractFunctionDecl::getImplicitSelfDecl(bool createIfNeeded) {
|
|
auto **selfDecl = getImplicitSelfDeclStorage();
|
|
|
|
// If this is not a method, return nullptr.
|
|
if (selfDecl == nullptr)
|
|
return nullptr;
|
|
|
|
// If we've already created a 'self' parameter, just return it.
|
|
if (*selfDecl != nullptr)
|
|
return *selfDecl;
|
|
|
|
// If we're not allowed to create one, return nullptr.
|
|
if (!createIfNeeded)
|
|
return nullptr;
|
|
|
|
// Create and save our 'self' parameter.
|
|
auto &ctx = getASTContext();
|
|
*selfDecl = new (ctx) ParamDecl(SourceLoc(), SourceLoc(), Identifier(),
|
|
getLoc(), ctx.Id_self, this);
|
|
(*selfDecl)->setImplicit();
|
|
|
|
return *selfDecl;
|
|
}
|
|
|
|
void AbstractFunctionDecl::setParameters(ParameterList *BodyParams) {
|
|
#ifndef NDEBUG
|
|
const auto Name = getName();
|
|
if (!isa<DestructorDecl>(this))
|
|
assert((!Name || !Name.isSimpleName()) && "Must have a compound name");
|
|
assert(!Name || (Name.getArgumentNames().size() == BodyParams->size()));
|
|
#endif
|
|
|
|
Params = BodyParams;
|
|
BodyParams->setDeclContextOfParamDecls(this);
|
|
}
|
|
|
|
OpaqueTypeDecl::OpaqueTypeDecl(ValueDecl *NamingDecl,
|
|
GenericParamList *GenericParams,
|
|
DeclContext *DC,
|
|
GenericSignature OpaqueInterfaceGenericSignature,
|
|
GenericTypeParamType *UnderlyingInterfaceType)
|
|
: GenericTypeDecl(DeclKind::OpaqueType, DC, Identifier(), SourceLoc(), {},
|
|
GenericParams),
|
|
NamingDecl(NamingDecl),
|
|
OpaqueInterfaceGenericSignature(OpaqueInterfaceGenericSignature),
|
|
UnderlyingInterfaceType(UnderlyingInterfaceType)
|
|
{
|
|
// Always implicit.
|
|
setImplicit();
|
|
}
|
|
|
|
bool OpaqueTypeDecl::isOpaqueReturnTypeOfFunction(
|
|
const AbstractFunctionDecl *func) const {
|
|
// Either the function is declared with its own opaque return type...
|
|
if (getNamingDecl() == func)
|
|
return true;
|
|
|
|
// ...or the function is a getter for a property or subscript with an
|
|
// opaque return type.
|
|
if (auto accessor = dyn_cast<AccessorDecl>(func)) {
|
|
return accessor->isGetter() && getNamingDecl() == accessor->getStorage();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
Identifier OpaqueTypeDecl::getOpaqueReturnTypeIdentifier() const {
|
|
assert(getNamingDecl() && "not an opaque return type");
|
|
if (!OpaqueReturnTypeIdentifier.empty())
|
|
return OpaqueReturnTypeIdentifier;
|
|
|
|
SmallString<64> mangleBuf;
|
|
{
|
|
llvm::raw_svector_ostream os(mangleBuf);
|
|
Mangle::ASTMangler mangler;
|
|
os << mangler.mangleOpaqueTypeDecl(this);
|
|
}
|
|
|
|
OpaqueReturnTypeIdentifier = getASTContext().getIdentifier(mangleBuf);
|
|
return OpaqueReturnTypeIdentifier;
|
|
}
|
|
|
|
bool AbstractFunctionDecl::hasInlinableBodyText() const {
|
|
switch (getBodyKind()) {
|
|
case BodyKind::Deserialized:
|
|
return true;
|
|
|
|
case BodyKind::Unparsed:
|
|
case BodyKind::Parsed:
|
|
case BodyKind::TypeChecked:
|
|
if (auto body = getBody())
|
|
return !body->isImplicit();
|
|
return false;
|
|
|
|
case BodyKind::None:
|
|
case BodyKind::Synthesize:
|
|
case BodyKind::Skipped:
|
|
case BodyKind::MemberwiseInitializer:
|
|
return false;
|
|
}
|
|
llvm_unreachable("covered switch");
|
|
}
|
|
|
|
StringRef AbstractFunctionDecl::getInlinableBodyText(
|
|
SmallVectorImpl<char> &scratch) const {
|
|
assert(hasInlinableBodyText() &&
|
|
"can't get string representation of function with no text");
|
|
|
|
if (getBodyKind() == BodyKind::Deserialized)
|
|
return BodyStringRepresentation;
|
|
|
|
auto body = getBody();
|
|
return extractInlinableText(getASTContext().SourceMgr, body, scratch);
|
|
}
|
|
|
|
/// A uniqued list of derivative function configurations.
|
|
struct AbstractFunctionDecl::DerivativeFunctionConfigurationList
|
|
: public llvm::SetVector<AutoDiffConfig> {
|
|
// Necessary for `ASTContext` allocation.
|
|
void *operator new(
|
|
size_t bytes, ASTContext &ctx,
|
|
unsigned alignment = alignof(DerivativeFunctionConfigurationList)) {
|
|
return ctx.Allocate(bytes, alignment);
|
|
}
|
|
};
|
|
|
|
void AbstractFunctionDecl::prepareDerivativeFunctionConfigurations() {
|
|
if (DerivativeFunctionConfigs)
|
|
return;
|
|
auto &ctx = getASTContext();
|
|
DerivativeFunctionConfigs = new (ctx) DerivativeFunctionConfigurationList();
|
|
// Register an `ASTContext` cleanup calling the list destructor.
|
|
ctx.addCleanup([this]() {
|
|
this->DerivativeFunctionConfigs->~DerivativeFunctionConfigurationList();
|
|
});
|
|
}
|
|
|
|
ArrayRef<AutoDiffConfig>
|
|
AbstractFunctionDecl::getDerivativeFunctionConfigurations() {
|
|
prepareDerivativeFunctionConfigurations();
|
|
|
|
// Resolve derivative function configurations from `@differentiable`
|
|
// attributes by type-checking them.
|
|
for (auto *diffAttr : getAttrs().getAttributes<DifferentiableAttr>())
|
|
(void)diffAttr->getParameterIndices();
|
|
// For accessors: resolve derivative function configurations from storage
|
|
// `@differentiable` attributes by type-checking them.
|
|
if (auto *accessor = dyn_cast<AccessorDecl>(this)) {
|
|
auto *storage = accessor->getStorage();
|
|
for (auto *diffAttr : storage->getAttrs().getAttributes<DifferentiableAttr>())
|
|
(void)diffAttr->getParameterIndices();
|
|
}
|
|
|
|
// Load derivative configurations from imported modules.
|
|
auto &ctx = getASTContext();
|
|
if (ctx.getCurrentGeneration() > DerivativeFunctionConfigGeneration) {
|
|
unsigned previousGeneration = DerivativeFunctionConfigGeneration;
|
|
DerivativeFunctionConfigGeneration = ctx.getCurrentGeneration();
|
|
ctx.loadDerivativeFunctionConfigurations(this, previousGeneration,
|
|
*DerivativeFunctionConfigs);
|
|
}
|
|
return DerivativeFunctionConfigs->getArrayRef();
|
|
}
|
|
|
|
void AbstractFunctionDecl::addDerivativeFunctionConfiguration(
|
|
AutoDiffConfig config) {
|
|
prepareDerivativeFunctionConfigurations();
|
|
DerivativeFunctionConfigs->insert(config);
|
|
}
|
|
|
|
void FuncDecl::setResultInterfaceType(Type type) {
|
|
getASTContext().evaluator.cacheOutput(ResultTypeRequest{this},
|
|
std::move(type));
|
|
}
|
|
|
|
FuncDecl *FuncDecl::createImpl(ASTContext &Context,
|
|
SourceLoc StaticLoc,
|
|
StaticSpellingKind StaticSpelling,
|
|
SourceLoc FuncLoc,
|
|
DeclName Name, SourceLoc NameLoc,
|
|
bool Async, SourceLoc AsyncLoc,
|
|
bool Throws, SourceLoc ThrowsLoc,
|
|
GenericParamList *GenericParams,
|
|
DeclContext *Parent,
|
|
ClangNode ClangN) {
|
|
bool HasImplicitSelfDecl = Parent->isTypeContext();
|
|
size_t Size = sizeof(FuncDecl) + (HasImplicitSelfDecl
|
|
? sizeof(ParamDecl *)
|
|
: 0);
|
|
void *DeclPtr = allocateMemoryForDecl<FuncDecl>(Context, Size,
|
|
!ClangN.isNull());
|
|
auto D = ::new (DeclPtr)
|
|
FuncDecl(DeclKind::Func, StaticLoc, StaticSpelling, FuncLoc,
|
|
Name, NameLoc, Async, AsyncLoc, Throws, ThrowsLoc,
|
|
HasImplicitSelfDecl, GenericParams, Parent);
|
|
if (ClangN)
|
|
D->setClangNode(ClangN);
|
|
if (HasImplicitSelfDecl)
|
|
*D->getImplicitSelfDeclStorage() = nullptr;
|
|
|
|
return D;
|
|
}
|
|
|
|
FuncDecl *FuncDecl::createDeserialized(ASTContext &Context,
|
|
StaticSpellingKind StaticSpelling,
|
|
DeclName Name, bool Async, bool Throws,
|
|
GenericParamList *GenericParams,
|
|
Type FnRetType, DeclContext *Parent) {
|
|
assert(FnRetType && "Deserialized result type must not be null");
|
|
auto *const FD =
|
|
FuncDecl::createImpl(Context, SourceLoc(), StaticSpelling, SourceLoc(),
|
|
Name, SourceLoc(), Async, SourceLoc(), Throws,
|
|
SourceLoc(), GenericParams, Parent, ClangNode());
|
|
FD->setResultInterfaceType(FnRetType);
|
|
return FD;
|
|
}
|
|
|
|
FuncDecl *FuncDecl::create(ASTContext &Context, SourceLoc StaticLoc,
|
|
StaticSpellingKind StaticSpelling, SourceLoc FuncLoc,
|
|
DeclName Name, SourceLoc NameLoc, bool Async,
|
|
SourceLoc AsyncLoc, bool Throws, SourceLoc ThrowsLoc,
|
|
GenericParamList *GenericParams,
|
|
ParameterList *BodyParams, TypeRepr *ResultTyR,
|
|
DeclContext *Parent) {
|
|
auto *const FD = FuncDecl::createImpl(
|
|
Context, StaticLoc, StaticSpelling, FuncLoc, Name, NameLoc, Async,
|
|
AsyncLoc, Throws, ThrowsLoc, GenericParams, Parent, ClangNode());
|
|
FD->setParameters(BodyParams);
|
|
FD->FnRetType = TypeLoc(ResultTyR);
|
|
return FD;
|
|
}
|
|
|
|
FuncDecl *FuncDecl::createImplicit(ASTContext &Context,
|
|
StaticSpellingKind StaticSpelling,
|
|
DeclName Name, SourceLoc NameLoc, bool Async,
|
|
bool Throws, GenericParamList *GenericParams,
|
|
ParameterList *BodyParams, Type FnRetType,
|
|
DeclContext *Parent) {
|
|
assert(FnRetType);
|
|
auto *const FD = FuncDecl::createImpl(
|
|
Context, SourceLoc(), StaticSpelling, SourceLoc(), Name, NameLoc, Async,
|
|
SourceLoc(), Throws, SourceLoc(), GenericParams, Parent, ClangNode());
|
|
FD->setImplicit();
|
|
FD->setParameters(BodyParams);
|
|
FD->setResultInterfaceType(FnRetType);
|
|
return FD;
|
|
}
|
|
|
|
FuncDecl *FuncDecl::createImported(ASTContext &Context, SourceLoc FuncLoc,
|
|
DeclName Name, SourceLoc NameLoc, bool Async,
|
|
bool Throws, ParameterList *BodyParams,
|
|
Type FnRetType,
|
|
GenericParamList *GenericParams,
|
|
DeclContext *Parent, ClangNode ClangN) {
|
|
assert(ClangN && FnRetType);
|
|
auto *const FD = FuncDecl::createImpl(
|
|
Context, SourceLoc(), StaticSpellingKind::None, FuncLoc, Name, NameLoc,
|
|
Async, SourceLoc(), Throws, SourceLoc(), GenericParams, Parent, ClangN);
|
|
FD->setParameters(BodyParams);
|
|
FD->setResultInterfaceType(FnRetType);
|
|
return FD;
|
|
}
|
|
|
|
OperatorDecl *FuncDecl::getOperatorDecl() const {
|
|
// Fast-path: Most functions are not operators.
|
|
if (!isOperator()) {
|
|
return nullptr;
|
|
}
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
FunctionOperatorRequest{
|
|
const_cast<FuncDecl *>(this)
|
|
},
|
|
nullptr);
|
|
}
|
|
|
|
bool FuncDecl::isStatic() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
IsStaticRequest{const_cast<FuncDecl *>(this)},
|
|
false);
|
|
}
|
|
|
|
AccessorDecl *AccessorDecl::createImpl(ASTContext &ctx,
|
|
SourceLoc declLoc,
|
|
SourceLoc accessorKeywordLoc,
|
|
AccessorKind accessorKind,
|
|
AbstractStorageDecl *storage,
|
|
SourceLoc staticLoc,
|
|
StaticSpellingKind staticSpelling,
|
|
bool throws, SourceLoc throwsLoc,
|
|
GenericParamList *genericParams,
|
|
DeclContext *parent,
|
|
ClangNode clangNode) {
|
|
bool hasImplicitSelfDecl = parent->isTypeContext();
|
|
size_t size = sizeof(AccessorDecl) + (hasImplicitSelfDecl
|
|
? sizeof(ParamDecl *)
|
|
: 0);
|
|
void *buffer = allocateMemoryForDecl<AccessorDecl>(ctx, size,
|
|
!clangNode.isNull());
|
|
auto D = ::new (buffer)
|
|
AccessorDecl(declLoc, accessorKeywordLoc, accessorKind,
|
|
storage, staticLoc, staticSpelling, throws, throwsLoc,
|
|
hasImplicitSelfDecl, genericParams, parent);
|
|
if (clangNode)
|
|
D->setClangNode(clangNode);
|
|
if (hasImplicitSelfDecl)
|
|
*D->getImplicitSelfDeclStorage() = nullptr;
|
|
|
|
return D;
|
|
}
|
|
|
|
AccessorDecl *
|
|
AccessorDecl::createDeserialized(ASTContext &ctx, AccessorKind accessorKind,
|
|
AbstractStorageDecl *storage,
|
|
StaticSpellingKind staticSpelling,
|
|
bool throws, GenericParamList *genericParams,
|
|
Type fnRetType, DeclContext *parent) {
|
|
assert(fnRetType && "Deserialized result type must not be null");
|
|
auto *const D = AccessorDecl::createImpl(
|
|
ctx, SourceLoc(), SourceLoc(), accessorKind, storage, SourceLoc(),
|
|
staticSpelling, throws, SourceLoc(), genericParams, parent, ClangNode());
|
|
D->setResultInterfaceType(fnRetType);
|
|
return D;
|
|
}
|
|
|
|
AccessorDecl *AccessorDecl::create(ASTContext &ctx,
|
|
SourceLoc declLoc,
|
|
SourceLoc accessorKeywordLoc,
|
|
AccessorKind accessorKind,
|
|
AbstractStorageDecl *storage,
|
|
SourceLoc staticLoc,
|
|
StaticSpellingKind staticSpelling,
|
|
bool throws, SourceLoc throwsLoc,
|
|
GenericParamList *genericParams,
|
|
ParameterList * bodyParams,
|
|
Type fnRetType,
|
|
DeclContext *parent,
|
|
ClangNode clangNode) {
|
|
auto *D = AccessorDecl::createImpl(
|
|
ctx, declLoc, accessorKeywordLoc, accessorKind, storage,
|
|
staticLoc, staticSpelling, throws, throwsLoc,
|
|
genericParams, parent, clangNode);
|
|
D->setParameters(bodyParams);
|
|
D->setResultInterfaceType(fnRetType);
|
|
return D;
|
|
}
|
|
|
|
bool AccessorDecl::isAssumedNonMutating() const {
|
|
switch (getAccessorKind()) {
|
|
case AccessorKind::Get:
|
|
case AccessorKind::Address:
|
|
case AccessorKind::Read:
|
|
return true;
|
|
|
|
case AccessorKind::Set:
|
|
case AccessorKind::WillSet:
|
|
case AccessorKind::DidSet:
|
|
case AccessorKind::MutableAddress:
|
|
case AccessorKind::Modify:
|
|
return false;
|
|
}
|
|
llvm_unreachable("bad accessor kind");
|
|
}
|
|
|
|
bool AccessorDecl::isExplicitNonMutating() const {
|
|
return !isMutating() &&
|
|
!isAssumedNonMutating() &&
|
|
isInstanceMember() &&
|
|
!getDeclContext()->getDeclaredInterfaceType()->hasReferenceSemantics();
|
|
}
|
|
|
|
bool AccessorDecl::isSimpleDidSet() const {
|
|
auto mutableThis = const_cast<AccessorDecl *>(this);
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
SimpleDidSetRequest{mutableThis}, false);
|
|
}
|
|
|
|
StaticSpellingKind FuncDecl::getCorrectStaticSpelling() const {
|
|
assert(getDeclContext()->isTypeContext());
|
|
if (!isStatic())
|
|
return StaticSpellingKind::None;
|
|
if (getStaticSpelling() != StaticSpellingKind::None)
|
|
return getStaticSpelling();
|
|
|
|
return getCorrectStaticSpellingForDecl(this);
|
|
}
|
|
|
|
Type FuncDecl::getResultInterfaceType() const {
|
|
auto &ctx = getASTContext();
|
|
auto mutableThis = const_cast<FuncDecl *>(this);
|
|
if (auto type = evaluateOrDefault(ctx.evaluator,
|
|
ResultTypeRequest{mutableThis},
|
|
Type()))
|
|
return type;
|
|
return ErrorType::get(ctx);
|
|
}
|
|
|
|
bool FuncDecl::isUnaryOperator() const {
|
|
if (!isOperator())
|
|
return false;
|
|
|
|
auto *params = getParameters();
|
|
return params->size() == 1 && !params->get(0)->isVariadic();
|
|
}
|
|
|
|
bool FuncDecl::isBinaryOperator() const {
|
|
if (!isOperator())
|
|
return false;
|
|
|
|
auto *params = getParameters();
|
|
return params->size() == 2 &&
|
|
!params->get(0)->isVariadic() &&
|
|
!params->get(1)->isVariadic();
|
|
}
|
|
|
|
SelfAccessKind FuncDecl::getSelfAccessKind() const {
|
|
auto &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
SelfAccessKindRequest{const_cast<FuncDecl *>(this)},
|
|
SelfAccessKind::NonMutating);
|
|
}
|
|
|
|
bool FuncDecl::isCallAsFunctionMethod() const {
|
|
return getBaseIdentifier() == getASTContext().Id_callAsFunction &&
|
|
isInstanceMember();
|
|
}
|
|
|
|
bool FuncDecl::isMainTypeMainMethod() const {
|
|
return (getBaseIdentifier() == getASTContext().Id_main) &&
|
|
!isInstanceMember() && getResultInterfaceType()->isVoid() &&
|
|
getParameters()->size() == 0;
|
|
}
|
|
|
|
bool FuncDecl::isEnqueuePartialTaskName(ASTContext &ctx, DeclName name) {
|
|
if (name.isCompoundName() && name.getBaseName() == ctx.Id_enqueue) {
|
|
auto argumentNames = name.getArgumentNames();
|
|
return argumentNames.size() == 1 && argumentNames[0] == ctx.Id_partialTask;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool FuncDecl::isActorEnqueuePartialTaskWitness() const {
|
|
if (!isEnqueuePartialTaskName(getASTContext(), getName()))
|
|
return false;
|
|
|
|
auto classDecl = getDeclContext()->getSelfClassDecl();
|
|
if (!classDecl)
|
|
return false;
|
|
|
|
if (!classDecl->isActor())
|
|
return false;
|
|
|
|
ASTContext &ctx = getASTContext();
|
|
auto actorProto = ctx.getProtocol(KnownProtocolKind::Actor);
|
|
if (!actorProto)
|
|
return false;
|
|
|
|
FuncDecl *requirement = nullptr;
|
|
for (auto protoMember : actorProto->getParsedMembers()) {
|
|
if (auto protoFunc = dyn_cast<FuncDecl>(protoMember)) {
|
|
if (isEnqueuePartialTaskName(ctx, protoFunc->getName())) {
|
|
requirement = protoFunc;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!requirement)
|
|
return false;
|
|
|
|
SmallVector<ProtocolConformance *, 1> conformances;
|
|
classDecl->lookupConformance(
|
|
classDecl->getModuleContext(), actorProto, conformances);
|
|
for (auto conformance : conformances) {
|
|
auto witness = conformance->getWitnessDecl(requirement);
|
|
if (witness == this)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
ConstructorDecl::ConstructorDecl(DeclName Name, SourceLoc ConstructorLoc,
|
|
bool Failable, SourceLoc FailabilityLoc,
|
|
bool Throws,
|
|
SourceLoc ThrowsLoc,
|
|
ParameterList *BodyParams,
|
|
GenericParamList *GenericParams,
|
|
DeclContext *Parent)
|
|
: AbstractFunctionDecl(DeclKind::Constructor, Parent, Name, ConstructorLoc,
|
|
/*Async=*/false, SourceLoc(), Throws, ThrowsLoc,
|
|
/*HasImplicitSelfDecl=*/true,
|
|
GenericParams),
|
|
FailabilityLoc(FailabilityLoc),
|
|
SelfDecl(nullptr)
|
|
{
|
|
if (BodyParams)
|
|
setParameters(BodyParams);
|
|
|
|
Bits.ConstructorDecl.HasStubImplementation = 0;
|
|
Bits.ConstructorDecl.Failable = Failable;
|
|
|
|
assert(Name.getBaseName() == DeclBaseName::createConstructor());
|
|
}
|
|
|
|
ConstructorDecl *ConstructorDecl::createImported(
|
|
ASTContext &ctx, ClangNode clangNode, DeclName name,
|
|
SourceLoc constructorLoc, bool failable, SourceLoc failabilityLoc,
|
|
bool throws, SourceLoc throwsLoc, ParameterList *bodyParams,
|
|
GenericParamList *genericParams, DeclContext *parent) {
|
|
void *declPtr = allocateMemoryForDecl<ConstructorDecl>(
|
|
ctx, sizeof(ConstructorDecl), true);
|
|
auto ctor = ::new (declPtr)
|
|
ConstructorDecl(name, constructorLoc, failable, failabilityLoc, throws,
|
|
throwsLoc, bodyParams, genericParams, parent);
|
|
ctor->setClangNode(clangNode);
|
|
return ctor;
|
|
}
|
|
|
|
bool ConstructorDecl::isObjCZeroParameterWithLongSelector() const {
|
|
// The initializer must have a single, non-empty argument name.
|
|
if (getName().getArgumentNames().size() != 1 ||
|
|
getName().getArgumentNames()[0].empty())
|
|
return false;
|
|
|
|
auto *params = getParameters();
|
|
if (params->size() != 1)
|
|
return false;
|
|
|
|
return params->get(0)->getInterfaceType()->isVoid();
|
|
}
|
|
|
|
DestructorDecl::DestructorDecl(SourceLoc DestructorLoc, DeclContext *Parent)
|
|
: AbstractFunctionDecl(DeclKind::Destructor, Parent,
|
|
DeclBaseName::createDestructor(), DestructorLoc,
|
|
/*Async=*/false, /*AsyncLoc=*/SourceLoc(),
|
|
/*Throws=*/false, /*ThrowsLoc=*/SourceLoc(),
|
|
/*HasImplicitSelfDecl=*/true,
|
|
/*GenericParams=*/nullptr),
|
|
SelfDecl(nullptr) {
|
|
setParameters(ParameterList::createEmpty(Parent->getASTContext()));
|
|
}
|
|
|
|
ObjCSelector DestructorDecl::getObjCSelector() const {
|
|
// Deinitializers are always called "dealloc".
|
|
auto &ctx = getASTContext();
|
|
return ObjCSelector(ctx, 0, ctx.Id_dealloc);
|
|
}
|
|
|
|
SourceRange FuncDecl::getSourceRange() const {
|
|
SourceLoc StartLoc = getStartLoc();
|
|
|
|
if (StartLoc.isInvalid())
|
|
return SourceRange();
|
|
|
|
if (getBodyKind() == BodyKind::Unparsed ||
|
|
getBodyKind() == BodyKind::Skipped)
|
|
return { StartLoc, BodyRange.End };
|
|
|
|
SourceLoc RBraceLoc = getOriginalBodySourceRange().End;
|
|
if (RBraceLoc.isValid()) {
|
|
return { StartLoc, RBraceLoc };
|
|
}
|
|
|
|
if (isa<AccessorDecl>(this))
|
|
return StartLoc;
|
|
|
|
if (getBodyKind() == BodyKind::Synthesize)
|
|
return SourceRange();
|
|
|
|
auto TrailingWhereClauseSourceRange = getGenericTrailingWhereClauseSourceRange();
|
|
if (TrailingWhereClauseSourceRange.isValid())
|
|
return { StartLoc, TrailingWhereClauseSourceRange.End };
|
|
|
|
const auto ResultTyEndLoc = getResultTypeSourceRange().End;
|
|
if (ResultTyEndLoc.isValid())
|
|
return { StartLoc, ResultTyEndLoc };
|
|
|
|
if (hasThrows())
|
|
return { StartLoc, getThrowsLoc() };
|
|
|
|
if (hasAsync())
|
|
return { StartLoc, getAsyncLoc() };
|
|
|
|
auto LastParamListEndLoc = getParameters()->getSourceRange().End;
|
|
if (LastParamListEndLoc.isValid())
|
|
return { StartLoc, LastParamListEndLoc };
|
|
return StartLoc;
|
|
}
|
|
|
|
EnumElementDecl::EnumElementDecl(SourceLoc IdentifierLoc, DeclName Name,
|
|
ParameterList *Params,
|
|
SourceLoc EqualsLoc,
|
|
LiteralExpr *RawValueExpr,
|
|
DeclContext *DC)
|
|
: DeclContext(DeclContextKind::EnumElementDecl, DC),
|
|
ValueDecl(DeclKind::EnumElement, DC, Name, IdentifierLoc),
|
|
EqualsLoc(EqualsLoc),
|
|
RawValueExpr(RawValueExpr) {
|
|
setParameterList(Params);
|
|
}
|
|
|
|
SourceRange EnumElementDecl::getSourceRange() const {
|
|
if (RawValueExpr && !RawValueExpr->isImplicit())
|
|
return {getStartLoc(), RawValueExpr->getEndLoc()};
|
|
if (auto *PL = getParameterList())
|
|
return {getStartLoc(), PL->getSourceRange().End};
|
|
return {getStartLoc(), getNameLoc()};
|
|
}
|
|
|
|
Type EnumElementDecl::getArgumentInterfaceType() const {
|
|
if (!hasAssociatedValues())
|
|
return nullptr;
|
|
|
|
auto interfaceType = getInterfaceType();
|
|
if (interfaceType->is<ErrorType>()) {
|
|
return interfaceType;
|
|
}
|
|
|
|
auto funcTy = interfaceType->castTo<AnyFunctionType>();
|
|
funcTy = funcTy->getResult()->castTo<FunctionType>();
|
|
|
|
auto &ctx = getASTContext();
|
|
SmallVector<TupleTypeElt, 4> elements;
|
|
for (const auto ¶m : funcTy->getParams()) {
|
|
Type eltType = param.getParameterType(/*canonicalVararg=*/false, &ctx);
|
|
elements.emplace_back(eltType, param.getLabel());
|
|
}
|
|
return TupleType::get(elements, ctx);
|
|
}
|
|
|
|
void EnumElementDecl::setParameterList(ParameterList *params) {
|
|
Params = params;
|
|
|
|
if (params)
|
|
params->setDeclContextOfParamDecls(this);
|
|
}
|
|
|
|
EnumCaseDecl *EnumElementDecl::getParentCase() const {
|
|
for (EnumCaseDecl *EC : getParentEnum()->getAllCases()) {
|
|
ArrayRef<EnumElementDecl *> CaseElements = EC->getElements();
|
|
if (std::find(CaseElements.begin(), CaseElements.end(), this) !=
|
|
CaseElements.end()) {
|
|
return EC;
|
|
}
|
|
}
|
|
|
|
llvm_unreachable("enum element not in case of parent enum");
|
|
}
|
|
|
|
LiteralExpr *EnumElementDecl::getRawValueExpr() const {
|
|
// The return value of this request is irrelevant - it exists as
|
|
// a cache-warmer.
|
|
(void)evaluateOrDefault(
|
|
getASTContext().evaluator,
|
|
EnumRawValuesRequest{getParentEnum(), TypeResolutionStage::Interface},
|
|
{});
|
|
return RawValueExpr;
|
|
}
|
|
|
|
LiteralExpr *EnumElementDecl::getStructuralRawValueExpr() const {
|
|
// The return value of this request is irrelevant - it exists as
|
|
// a cache-warmer.
|
|
(void)evaluateOrDefault(
|
|
getASTContext().evaluator,
|
|
EnumRawValuesRequest{getParentEnum(), TypeResolutionStage::Structural},
|
|
{});
|
|
return RawValueExpr;
|
|
}
|
|
|
|
void EnumElementDecl::setRawValueExpr(LiteralExpr *e) {
|
|
assert((!RawValueExpr || e == RawValueExpr || e->getType()) &&
|
|
"Illegal mutation of raw value expr");
|
|
RawValueExpr = e;
|
|
}
|
|
|
|
SourceRange ConstructorDecl::getSourceRange() const {
|
|
if (isImplicit())
|
|
return getConstructorLoc();
|
|
|
|
SourceLoc End = getOriginalBodySourceRange().End;
|
|
if (End.isInvalid())
|
|
End = getGenericTrailingWhereClauseSourceRange().End;
|
|
if (End.isInvalid())
|
|
End = getThrowsLoc();
|
|
if (End.isInvalid())
|
|
End = getSignatureSourceRange().End;
|
|
|
|
return { getConstructorLoc(), End };
|
|
}
|
|
|
|
Type ConstructorDecl::getResultInterfaceType() const {
|
|
Type resultTy;
|
|
|
|
auto *dc = getDeclContext();
|
|
if (!dc->isTypeContext())
|
|
resultTy = ErrorType::get(getASTContext());
|
|
else
|
|
resultTy = dc->getSelfInterfaceType();
|
|
|
|
// Adjust result type for failability.
|
|
if (isFailable())
|
|
return OptionalType::get(resultTy);
|
|
|
|
return resultTy;
|
|
}
|
|
|
|
Type ConstructorDecl::getInitializerInterfaceType() {
|
|
if (InitializerInterfaceType)
|
|
return InitializerInterfaceType;
|
|
|
|
// Lazily calculate initializer type.
|
|
auto allocatorTy = getInterfaceType();
|
|
if (!allocatorTy->is<AnyFunctionType>()) {
|
|
InitializerInterfaceType = ErrorType::get(getASTContext());
|
|
return InitializerInterfaceType;
|
|
}
|
|
|
|
auto funcTy = allocatorTy->castTo<AnyFunctionType>()->getResult();
|
|
assert(funcTy->is<FunctionType>());
|
|
|
|
// Constructors have an initializer type that takes an instance
|
|
// instead of a metatype.
|
|
auto initSelfParam = computeSelfParam(this, /*isInitializingCtor=*/true);
|
|
Type initFuncTy;
|
|
if (auto sig = getGenericSignature())
|
|
initFuncTy = GenericFunctionType::get(sig, {initSelfParam}, funcTy);
|
|
else
|
|
initFuncTy = FunctionType::get({initSelfParam}, funcTy);
|
|
InitializerInterfaceType = initFuncTy;
|
|
|
|
return InitializerInterfaceType;
|
|
}
|
|
|
|
CtorInitializerKind ConstructorDecl::getInitKind() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
InitKindRequest{const_cast<ConstructorDecl *>(this)},
|
|
CtorInitializerKind::Designated);
|
|
}
|
|
|
|
BodyInitKindAndExpr
|
|
ConstructorDecl::getDelegatingOrChainedInitKind() const {
|
|
return evaluateOrDefault(getASTContext().evaluator,
|
|
BodyInitKindRequest{const_cast<ConstructorDecl *>(this)},
|
|
BodyInitKindAndExpr());
|
|
assert(hasBody() && "Constructor does not have a definition");
|
|
}
|
|
|
|
void ConstructorDecl::clearCachedDelegatingOrChainedInitKind() {
|
|
getASTContext().evaluator.clearCachedOutput(
|
|
BodyInitKindRequest{const_cast<ConstructorDecl *>(this)});
|
|
}
|
|
|
|
SourceRange DestructorDecl::getSourceRange() const {
|
|
SourceLoc End = getOriginalBodySourceRange().End;
|
|
if (End.isInvalid()) {
|
|
End = getDestructorLoc();
|
|
}
|
|
|
|
return { getDestructorLoc(), End };
|
|
}
|
|
|
|
StringRef swift::getAssociativitySpelling(Associativity value) {
|
|
switch (value) {
|
|
case Associativity::None: return "none";
|
|
case Associativity::Left: return "left";
|
|
case Associativity::Right: return "right";
|
|
}
|
|
llvm_unreachable("Unhandled Associativity in switch.");
|
|
}
|
|
|
|
PrecedenceGroupDecl *
|
|
PrecedenceGroupDecl::create(DeclContext *dc,
|
|
SourceLoc precedenceGroupLoc,
|
|
SourceLoc nameLoc,
|
|
Identifier name,
|
|
SourceLoc lbraceLoc,
|
|
SourceLoc associativityKeywordLoc,
|
|
SourceLoc associativityValueLoc,
|
|
Associativity associativity,
|
|
SourceLoc assignmentKeywordLoc,
|
|
SourceLoc assignmentValueLoc,
|
|
bool isAssignment,
|
|
SourceLoc higherThanLoc,
|
|
ArrayRef<Relation> higherThan,
|
|
SourceLoc lowerThanLoc,
|
|
ArrayRef<Relation> lowerThan,
|
|
SourceLoc rbraceLoc) {
|
|
void *memory = dc->getASTContext().Allocate(sizeof(PrecedenceGroupDecl) +
|
|
(higherThan.size() + lowerThan.size()) * sizeof(Relation),
|
|
alignof(PrecedenceGroupDecl));
|
|
return new (memory) PrecedenceGroupDecl(dc, precedenceGroupLoc, nameLoc, name,
|
|
lbraceLoc, associativityKeywordLoc,
|
|
associativityValueLoc, associativity,
|
|
assignmentKeywordLoc,
|
|
assignmentValueLoc, isAssignment,
|
|
higherThanLoc, higherThan,
|
|
lowerThanLoc, lowerThan, rbraceLoc);
|
|
}
|
|
|
|
PrecedenceGroupDecl::PrecedenceGroupDecl(DeclContext *dc,
|
|
SourceLoc precedenceGroupLoc,
|
|
SourceLoc nameLoc,
|
|
Identifier name,
|
|
SourceLoc lbraceLoc,
|
|
SourceLoc associativityKeywordLoc,
|
|
SourceLoc associativityValueLoc,
|
|
Associativity associativity,
|
|
SourceLoc assignmentKeywordLoc,
|
|
SourceLoc assignmentValueLoc,
|
|
bool isAssignment,
|
|
SourceLoc higherThanLoc,
|
|
ArrayRef<Relation> higherThan,
|
|
SourceLoc lowerThanLoc,
|
|
ArrayRef<Relation> lowerThan,
|
|
SourceLoc rbraceLoc)
|
|
: Decl(DeclKind::PrecedenceGroup, dc),
|
|
PrecedenceGroupLoc(precedenceGroupLoc), NameLoc(nameLoc),
|
|
LBraceLoc(lbraceLoc), RBraceLoc(rbraceLoc),
|
|
AssociativityKeywordLoc(associativityKeywordLoc),
|
|
AssociativityValueLoc(associativityValueLoc),
|
|
AssignmentKeywordLoc(assignmentKeywordLoc),
|
|
AssignmentValueLoc(assignmentValueLoc),
|
|
HigherThanLoc(higherThanLoc), LowerThanLoc(lowerThanLoc), Name(name),
|
|
NumHigherThan(higherThan.size()), NumLowerThan(lowerThan.size()) {
|
|
Bits.PrecedenceGroupDecl.Associativity = unsigned(associativity);
|
|
Bits.PrecedenceGroupDecl.IsAssignment = isAssignment;
|
|
memcpy(getHigherThanBuffer(), higherThan.data(),
|
|
higherThan.size() * sizeof(Relation));
|
|
memcpy(getLowerThanBuffer(), lowerThan.data(),
|
|
lowerThan.size() * sizeof(Relation));
|
|
}
|
|
|
|
PrecedenceGroupDecl *InfixOperatorDecl::getPrecedenceGroup() const {
|
|
return evaluateOrDefault(
|
|
getASTContext().evaluator,
|
|
OperatorPrecedenceGroupRequest{const_cast<InfixOperatorDecl *>(this)},
|
|
nullptr);
|
|
}
|
|
|
|
bool FuncDecl::isDeferBody() const {
|
|
return getBaseIdentifier() == getASTContext().getIdentifier("$defer");
|
|
}
|
|
|
|
bool FuncDecl::isPotentialIBActionTarget() const {
|
|
return isInstanceMember() &&
|
|
getDeclContext()->getSelfClassDecl() &&
|
|
!isa<AccessorDecl>(this);
|
|
}
|
|
|
|
void FuncDecl::setHasTopLevelLocalContextCaptures(bool hasCaptures) {
|
|
assert(!hasCaptures || isa<SourceFile>(getDeclContext()));
|
|
|
|
Bits.FuncDecl.HasTopLevelLocalContextCaptures = hasCaptures;
|
|
}
|
|
|
|
Type TypeBase::getSwiftNewtypeUnderlyingType() {
|
|
auto structDecl = getStructOrBoundGenericStruct();
|
|
if (!structDecl)
|
|
return {};
|
|
|
|
// Make sure the clang node has swift_newtype attribute
|
|
auto clangNode = structDecl->getClangDecl();
|
|
if (!clangNode || !clangNode->hasAttr<clang::SwiftNewTypeAttr>())
|
|
return {};
|
|
|
|
// Underlying type is the type of rawValue
|
|
for (auto member : structDecl->getMembers())
|
|
if (auto varDecl = dyn_cast<VarDecl>(member))
|
|
if (varDecl->getName() == getASTContext().Id_rawValue)
|
|
return varDecl->getType();
|
|
|
|
return {};
|
|
}
|
|
|
|
bool ClassDecl::hasExplicitCustomActorMethods() const {
|
|
auto &ctx = getASTContext();
|
|
for (auto member: getMembers()) {
|
|
if (member->isImplicit()) continue;
|
|
|
|
// Methods called enqueue(partialTask:)
|
|
if (auto func = dyn_cast<FuncDecl>(member)) {
|
|
if (FuncDecl::isEnqueuePartialTaskName(ctx, func->getName()))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ClassDecl::isRootDefaultActor() const {
|
|
if (!isDefaultActor()) return false;
|
|
auto superclass = getSuperclassDecl();
|
|
return (!superclass || superclass->isNSObject());
|
|
}
|
|
|
|
bool ClassDecl::isNativeNSObjectSubclass() const {
|
|
// Only if we inherit from NSObject.
|
|
auto superclass = getSuperclassDecl();
|
|
if (!superclass || !superclass->isNSObject())
|
|
return false;
|
|
|
|
// For now, only actors (regardless of whether they're default actors).
|
|
// Eventually we should roll this out to more classes, but we have to
|
|
// do it with ABI compatibility.
|
|
return isActor();
|
|
}
|
|
|
|
bool ClassDecl::isNSObject() const {
|
|
if (!getName().is("NSObject")) return false;
|
|
ASTContext &ctx = getASTContext();
|
|
return (getModuleContext()->getName() == ctx.Id_Foundation ||
|
|
getModuleContext()->getName() == ctx.Id_ObjectiveC);
|
|
}
|
|
|
|
Type ClassDecl::getSuperclass() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
SuperclassTypeRequest{const_cast<ClassDecl *>(this),
|
|
TypeResolutionStage::Interface},
|
|
Type());
|
|
}
|
|
|
|
ClassDecl *ClassDecl::getSuperclassDecl() const {
|
|
ASTContext &ctx = getASTContext();
|
|
return evaluateOrDefault(ctx.evaluator,
|
|
SuperclassDeclRequest{const_cast<ClassDecl *>(this)}, nullptr);
|
|
}
|
|
|
|
void ClassDecl::setSuperclass(Type superclass) {
|
|
assert((!superclass || !superclass->hasArchetype())
|
|
&& "superclass must be interface type");
|
|
LazySemanticInfo.SuperclassType.setPointerAndInt(superclass, true);
|
|
LazySemanticInfo.SuperclassDecl.setPointerAndInt(
|
|
superclass ? superclass->getClassOrBoundGenericClass() : nullptr,
|
|
true);
|
|
}
|
|
|
|
ActorIsolation swift::getActorIsolation(ValueDecl *value) {
|
|
auto &ctx = value->getASTContext();
|
|
return evaluateOrDefault(
|
|
ctx.evaluator, ActorIsolationRequest{value},
|
|
ActorIsolation::forUnspecified());
|
|
}
|
|
|
|
ActorIsolation swift::getActorIsolationOfContext(DeclContext *dc) {
|
|
if (auto *vd = dyn_cast_or_null<ValueDecl>(dc->getAsDecl()))
|
|
return getActorIsolation(vd);
|
|
|
|
if (auto *init = dyn_cast<PatternBindingInitializer>(dc)) {
|
|
if (auto *var = init->getBinding()->getAnchoringVarDecl(
|
|
init->getBindingIndex()))
|
|
return getActorIsolation(var);
|
|
}
|
|
|
|
if (auto *closure = dyn_cast<AbstractClosureExpr>(dc)) {
|
|
switch (auto isolation = closure->getActorIsolation()) {
|
|
case ClosureActorIsolation::Independent:
|
|
return ActorIsolation::forIndependent(ActorIndependentKind::Safe);
|
|
|
|
case ClosureActorIsolation::GlobalActor: {
|
|
return ActorIsolation::forGlobalActor(isolation.getGlobalActor());
|
|
}
|
|
|
|
case ClosureActorIsolation::ActorInstance: {
|
|
auto selfDecl = isolation.getActorInstance();
|
|
auto actorClass = selfDecl->getType()->getRValueType()
|
|
->getClassOrBoundGenericClass();
|
|
assert(actorClass && "Bad closure actor isolation?");
|
|
return ActorIsolation::forActorInstance(actorClass);
|
|
}
|
|
}
|
|
}
|
|
|
|
return ActorIsolation::forUnspecified();
|
|
}
|
|
|
|
ClangNode Decl::getClangNodeImpl() const {
|
|
assert(Bits.Decl.FromClang);
|
|
void * const *ptr = nullptr;
|
|
switch (getKind()) {
|
|
#define DECL(Id, Parent) \
|
|
case DeclKind::Id: \
|
|
ptr = reinterpret_cast<void * const*>(static_cast<const Id##Decl*>(this)); \
|
|
break;
|
|
#include "swift/AST/DeclNodes.def"
|
|
}
|
|
return ClangNode::getFromOpaqueValue(*(ptr - 1));
|
|
}
|
|
|
|
void Decl::setClangNode(ClangNode Node) {
|
|
Bits.Decl.FromClang = true;
|
|
// The extra/preface memory is allocated by the importer.
|
|
void **ptr = nullptr;
|
|
switch (getKind()) {
|
|
#define DECL(Id, Parent) \
|
|
case DeclKind::Id: \
|
|
ptr = reinterpret_cast<void **>(static_cast<Id##Decl*>(this)); \
|
|
break;
|
|
#include "swift/AST/DeclNodes.def"
|
|
}
|
|
*(ptr - 1) = Node.getOpaqueValue();
|
|
}
|
|
|
|
// See swift/Basic/Statistic.h for declaration: this enables tracing Decls, is
|
|
// defined here to avoid too much layering violation / circular linkage
|
|
// dependency.
|
|
|
|
struct DeclTraceFormatter : public UnifiedStatsReporter::TraceFormatter {
|
|
void traceName(const void *Entity, raw_ostream &OS) const override {
|
|
if (!Entity)
|
|
return;
|
|
const Decl *D = static_cast<const Decl *>(Entity);
|
|
if (auto const *VD = dyn_cast<const ValueDecl>(D)) {
|
|
VD->getName().print(OS, false);
|
|
} else {
|
|
OS << "<"
|
|
<< Decl::getDescriptiveKindName(D->getDescriptiveKind())
|
|
<< ">";
|
|
}
|
|
}
|
|
void traceLoc(const void *Entity, SourceManager *SM,
|
|
clang::SourceManager *CSM, raw_ostream &OS) const override {
|
|
if (!Entity)
|
|
return;
|
|
const Decl *D = static_cast<const Decl *>(Entity);
|
|
D->getSourceRange().print(OS, *SM, false);
|
|
}
|
|
};
|
|
|
|
static DeclTraceFormatter TF;
|
|
|
|
template<>
|
|
const UnifiedStatsReporter::TraceFormatter*
|
|
FrontendStatsTracer::getTraceFormatter<const Decl *>() {
|
|
return &TF;
|
|
}
|
|
|
|
TypeOrExtensionDecl::TypeOrExtensionDecl(NominalTypeDecl *D) : Decl(D) {}
|
|
TypeOrExtensionDecl::TypeOrExtensionDecl(ExtensionDecl *D) : Decl(D) {}
|
|
|
|
Decl *TypeOrExtensionDecl::getAsDecl() const {
|
|
if (auto NTD = Decl.dyn_cast<NominalTypeDecl *>())
|
|
return NTD;
|
|
|
|
return Decl.get<ExtensionDecl *>();
|
|
}
|
|
DeclContext *TypeOrExtensionDecl::getAsDeclContext() const {
|
|
return getAsDecl()->getInnermostDeclContext();
|
|
}
|
|
NominalTypeDecl *TypeOrExtensionDecl::getBaseNominal() const {
|
|
return getAsDeclContext()->getSelfNominalTypeDecl();
|
|
}
|
|
bool TypeOrExtensionDecl::isNull() const { return Decl.isNull(); }
|
|
|
|
void swift::simple_display(llvm::raw_ostream &out, const Decl *decl) {
|
|
if (!decl) {
|
|
out << "(null)";
|
|
return;
|
|
}
|
|
|
|
if (auto value = dyn_cast<ValueDecl>(decl)) {
|
|
simple_display(out, value);
|
|
} else if (auto ext = dyn_cast<ExtensionDecl>(decl)) {
|
|
out << "extension of ";
|
|
if (auto typeRepr = ext->getExtendedTypeRepr())
|
|
typeRepr->print(out);
|
|
else
|
|
ext->getSelfNominalTypeDecl()->dumpRef(out);
|
|
} else {
|
|
out << "(unknown decl)";
|
|
}
|
|
}
|
|
|
|
void swift::simple_display(llvm::raw_ostream &out,
|
|
OptionSet<NominalTypeDecl::LookupDirectFlags> opts) {
|
|
out << "{ ";
|
|
using LookupFlags = NominalTypeDecl::LookupDirectFlags;
|
|
if (opts.contains(LookupFlags::IncludeAttrImplements))
|
|
out << "IncludeAttrImplements";
|
|
out << " }";
|
|
}
|
|
|
|
void swift::simple_display(llvm::raw_ostream &out, const ValueDecl *decl) {
|
|
if (decl) decl->dumpRef(out);
|
|
else out << "(null)";
|
|
}
|
|
|
|
void swift::simple_display(llvm::raw_ostream &out, const GenericParamList *GPL) {
|
|
if (GPL) GPL->print(out);
|
|
else out << "(null)";
|
|
}
|
|
|
|
StringRef swift::getAccessorLabel(AccessorKind kind) {
|
|
switch (kind) {
|
|
#define SINGLETON_ACCESSOR(ID, KEYWORD) \
|
|
case AccessorKind::ID: return #KEYWORD;
|
|
#define ACCESSOR(ID)
|
|
#include "swift/AST/AccessorKinds.def"
|
|
}
|
|
llvm_unreachable("bad accessor kind");
|
|
}
|
|
|
|
void swift::simple_display(llvm::raw_ostream &out, AccessorKind kind) {
|
|
out << getAccessorLabel(kind);
|
|
}
|
|
|
|
SourceLoc swift::extractNearestSourceLoc(const Decl *decl) {
|
|
auto loc = decl->getLoc();
|
|
if (loc.isValid())
|
|
return loc;
|
|
|
|
return extractNearestSourceLoc(decl->getDeclContext());
|
|
}
|
|
|
|
Optional<BraceStmt *>
|
|
ParseAbstractFunctionBodyRequest::getCachedResult() const {
|
|
using BodyKind = AbstractFunctionDecl::BodyKind;
|
|
auto afd = std::get<0>(getStorage());
|
|
switch (afd->getBodyKind()) {
|
|
case BodyKind::Deserialized:
|
|
case BodyKind::MemberwiseInitializer:
|
|
case BodyKind::None:
|
|
case BodyKind::Skipped:
|
|
return nullptr;
|
|
|
|
case BodyKind::TypeChecked:
|
|
case BodyKind::Parsed:
|
|
return afd->Body;
|
|
|
|
case BodyKind::Synthesize:
|
|
case BodyKind::Unparsed:
|
|
return None;
|
|
}
|
|
llvm_unreachable("Unhandled BodyKing in switch");
|
|
}
|
|
|
|
void ParseAbstractFunctionBodyRequest::cacheResult(BraceStmt *value) const {
|
|
using BodyKind = AbstractFunctionDecl::BodyKind;
|
|
auto afd = std::get<0>(getStorage());
|
|
switch (afd->getBodyKind()) {
|
|
case BodyKind::Deserialized:
|
|
case BodyKind::MemberwiseInitializer:
|
|
case BodyKind::None:
|
|
case BodyKind::Skipped:
|
|
// The body is always empty, so don't cache anything.
|
|
assert(value == nullptr);
|
|
return;
|
|
|
|
case BodyKind::Parsed:
|
|
case BodyKind::TypeChecked:
|
|
afd->Body = value;
|
|
return;
|
|
|
|
case BodyKind::Synthesize:
|
|
case BodyKind::Unparsed:
|
|
llvm_unreachable("evaluate() did not set the body kind");
|
|
return;
|
|
}
|
|
|
|
}
|
|
|
|
void swift::simple_display(llvm::raw_ostream &out, AnyFunctionRef fn) {
|
|
if (auto func = fn.getAbstractFunctionDecl())
|
|
simple_display(out, func);
|
|
else
|
|
out << "closure";
|
|
}
|