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135 lines
3.8 KiB
C++
135 lines
3.8 KiB
C++
//===--- Attr.cpp - Swift Language Attr 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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://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 routines relating to declaration attributes.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/AST/Attr.h"
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#include "swift/AST/ASTContext.h"
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#include "swift/AST/ASTPrinter.h"
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#include "swift/AST/Decl.h"
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#include "swift/AST/Module.h"
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#include "swift/AST/Types.h"
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using namespace swift;
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// Only allow allocation of attributes using the allocator in ASTContext.
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void *AttributeBase::operator new(size_t Bytes, 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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/// A statically-allocated empty set of attributes.
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const DeclAttributes Decl::EmptyAttrs;
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DeclAttributes &Decl::getMutableAttrs() {
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// If we don't have mutable attribute storage yet, allocate some.
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if (&getAttrs() == &EmptyAttrs)
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AttrsAndIsObjC = {getASTContext().Allocate<DeclAttributes>(),
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AttrsAndIsObjC.getInt()};
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return *const_cast<DeclAttributes*>(&getAttrs());
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}
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void DeclAttributes::print(llvm::raw_ostream &OS) const {
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StreamPrinter P(OS);
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print(P);
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}
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void DeclAttributes::print(ASTPrinter &Printer) const {
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if (NumAttrsSet == 0)
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return;
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if (isAssignment())
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Printer << "@assignment ";
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if (isConversion())
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Printer << "@conversion ";
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if (isTransparent())
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Printer << "@transparent ";
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if (isInfix())
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Printer << "@infix ";
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switch (getResilienceKind()) {
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case Resilience::Default: break;
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case Resilience::Fragile: Printer << "@fragile "; break;
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case Resilience::InherentlyFragile: Printer << "@born_fragile "; break;
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case Resilience::Resilient: Printer << "@resilient "; break;
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}
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if (isNoReturn())
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Printer << "@noreturn ";
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if (isPostfix())
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Printer << "@postfix ";
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if (isObjC())
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Printer << "@objc ";
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if (requiresStoredPropertyInits())
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Printer << "@requires_stored_property_inits ";
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if (isIBOutlet())
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Printer << "@IBOutlet ";
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if (isIBAction())
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Printer << "@IBAction ";
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if (isClassProtocol())
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Printer << "@class_protocol ";
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if (isExported())
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Printer << "@exported ";
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if (isOptional())
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Printer << "@optional ";
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Optional<bool> MutatingAttr = getMutating();
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if (MutatingAttr && MutatingAttr.getValue())
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Printer << "@mutating ";
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if (MutatingAttr && !MutatingAttr.getValue())
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Printer << "@!mutating ";
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if (isRequired())
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Printer << "@required ";
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if (isOverride())
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Printer << "@override ";
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for (auto DA : *this)
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DA->print(Printer);
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}
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void DeclAttribute::print(ASTPrinter &Printer) const {
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switch (getKind()) {
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case DAK_asmname:
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Printer << "@asmname(\"" << cast<AsmnameAttr>(this)->Name << "\")";
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break;
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case DAK_unavailable: {
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Printer << "@unavailable";
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auto Attr = cast<UnavailableAttr>(this);
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if (!Attr->Message.empty()) {
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Printer << "(\"" << Attr->Message << "\")";
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}
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break;
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}
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case DAK_Count:
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llvm_unreachable("exceed declaration attribute kinds");
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}
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Printer << ' ';
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}
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void DeclAttribute::print(llvm::raw_ostream &OS) const {
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StreamPrinter P(OS);
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print(P);
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}
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unsigned DeclAttribute::canAppear() const {
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switch (getKind()) {
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case DAK_Count:
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llvm_unreachable("canAppear needs a valid attribute");
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break;
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#define DECL_ATTR(NAME, OPTIONS)\
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case DAK_##NAME: return OPTIONS;
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#include "swift/AST/Attr.def"
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}
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return 0;
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}
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