mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
e7f5f3da01
Previously, we were creating the type corresponding to class/struct/union declarations as part of creating the declaration node, which happens at parse time. The main problem with this (at the moment) occurs with nested nominal types, where we'd end up with the wrong "parent" type when the type was nested inside an extension (because the extension hadn't been resolved at the time we accessed the parent's type). Amusingly, only code completion observed this, because the canonical type system hid the problem. The churn in the code-completion tests come from the fact that we now have the proper declared type for class/struct/union declarations within extensions. Take a step toward order-independent type checking by setting the type of a class/struct/union declaration in type checking when we either find the declaration (e.g., due to name lookup) or walk to the declaration (in our walk of the whole translation unit to type-check it), extending the existing TypeChecker::validateTypeDecl() entry point and adding a few more callers. The removeShadowedDecls() hack is awful; this needs to move out to the callers, which should be abstracted better in the type checker anyway. Incremental, non-obvious step toward fixing the representation of polymorphic function types. This yak has a *lot* of hair. Swift SVN r7444
2025 lines
66 KiB
C++
2025 lines
66 KiB
C++
//===--- Deserialization.cpp - Loading a serialized AST ---------*- c++ -*-===//
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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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#include "ModuleFile.h"
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#include "ModuleFormat.h"
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#include "swift/AST/AST.h"
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#include "swift/Serialization/BCReadingExtras.h"
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using namespace swift;
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using namespace swift::serialization;
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using ConformancePair = std::pair<ProtocolDecl *, ProtocolConformance *>;
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/// Translate from the serialization DefaultArgumentKind enumerators, which are
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/// guaranteed to be stable, to the AST ones.
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static Optional<swift::DefaultArgumentKind>
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getActualDefaultArgKind(uint8_t raw) {
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switch (static_cast<serialization::DefaultArgumentKind>(raw)) {
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case serialization::DefaultArgumentKind::None:
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return swift::DefaultArgumentKind::None;
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case serialization::DefaultArgumentKind::Normal:
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return swift::DefaultArgumentKind::Normal;
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case serialization::DefaultArgumentKind::Column:
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return swift::DefaultArgumentKind::Column;
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case serialization::DefaultArgumentKind::File:
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return swift::DefaultArgumentKind::File;
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case serialization::DefaultArgumentKind::Line:
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return swift::DefaultArgumentKind::Line;
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}
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return Nothing;
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}
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Pattern *ModuleFile::maybeReadPattern() {
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using namespace decls_block;
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SmallVector<uint64_t, 8> scratch;
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auto next = DeclTypeCursor.advance(AF_DontPopBlockAtEnd);
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if (next.Kind != llvm::BitstreamEntry::Record)
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return nullptr;
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unsigned kind = DeclTypeCursor.readRecord(next.ID, scratch);
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switch (kind) {
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case decls_block::PAREN_PATTERN: {
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bool isImplicit;
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ParenPatternLayout::readRecord(scratch, isImplicit);
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Pattern *subPattern = maybeReadPattern();
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assert(subPattern);
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auto result = new (ModuleContext->Ctx) ParenPattern(SourceLoc(),
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subPattern,
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SourceLoc(),
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isImplicit);
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result->setType(subPattern->getType());
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return result;
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}
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case decls_block::TUPLE_PATTERN: {
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TypeID tupleTypeID;
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unsigned count;
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bool hasVararg;
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bool isImplicit;
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TuplePatternLayout::readRecord(scratch, tupleTypeID, count, hasVararg,
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isImplicit);
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SmallVector<TuplePatternElt, 8> elements;
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for ( ; count > 0; --count) {
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scratch.clear();
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next = DeclTypeCursor.advance();
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assert(next.Kind == llvm::BitstreamEntry::Record);
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kind = DeclTypeCursor.readRecord(next.ID, scratch);
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assert(kind == decls_block::TUPLE_PATTERN_ELT);
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// FIXME: Add something for this record or remove it.
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uint8_t rawDefaultArg;
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TuplePatternEltLayout::readRecord(scratch, rawDefaultArg);
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Pattern *subPattern = maybeReadPattern();
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assert(subPattern);
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// Decode the default argument kind.
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// FIXME: Default argument expression, if available.
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swift::DefaultArgumentKind defaultArgKind
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= swift::DefaultArgumentKind::None;
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if (auto defaultArg = getActualDefaultArgKind(rawDefaultArg))
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defaultArgKind = *defaultArg;
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elements.push_back(TuplePatternElt(subPattern, nullptr,
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defaultArgKind));
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}
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auto result = TuplePattern::create(ModuleContext->Ctx, SourceLoc(),
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elements, SourceLoc(), hasVararg,
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SourceLoc(), isImplicit);
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result->setType(getType(tupleTypeID));
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return result;
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}
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case decls_block::NAMED_PATTERN: {
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DeclID varID;
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bool isImplicit;
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NamedPatternLayout::readRecord(scratch, varID, isImplicit);
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auto var = cast<VarDecl>(getDecl(varID));
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auto result = new (ModuleContext->Ctx) NamedPattern(var, isImplicit);
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if (var->hasType())
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result->setType(var->getType());
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return result;
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}
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case decls_block::ANY_PATTERN: {
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TypeID typeID;
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bool isImplicit;
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AnyPatternLayout::readRecord(scratch, typeID, isImplicit);
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auto result = new (ModuleContext->Ctx) AnyPattern(SourceLoc(), isImplicit);
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result->setType(getType(typeID));
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return result;
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}
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case decls_block::TYPED_PATTERN: {
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TypeID typeID;
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bool isImplicit;
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TypedPatternLayout::readRecord(scratch, typeID, isImplicit);
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Pattern *subPattern = maybeReadPattern();
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assert(subPattern);
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TypeLoc typeInfo = TypeLoc::withoutLoc(getType(typeID));
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auto result = new (ModuleContext->Ctx) TypedPattern(subPattern, typeInfo,
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isImplicit);
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result->setType(typeInfo.getType());
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return result;
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}
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default:
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return nullptr;
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}
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}
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ProtocolConformance *
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ModuleFile::readUnderlyingConformance(ProtocolDecl *proto,
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DeclID typeID,
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IdentifierID moduleID) {
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if (!moduleID) {
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// The underlying conformance is in the following record.
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return maybeReadConformance(getType(typeID))->second;
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}
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// Dig out the protocol conformance within the nominal declaration.
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auto nominal = cast<NominalTypeDecl>(getDecl(typeID));
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Module *owningModule;
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if (moduleID == 1)
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owningModule = ModuleContext;
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else
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owningModule = getModule(getIdentifier(moduleID-2));
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(void)owningModule; // FIXME: Currently only used for checking.
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// Search protocols
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for (unsigned i = 0, n = nominal->getProtocols().size(); i != n; ++i) {
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if (nominal->getProtocols()[i] == proto) {
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// FIXME: Eventually, filter by owning module.
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assert(nominal->getModuleContext() == owningModule);
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return nominal->getConformances()[i];
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}
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}
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// Search extensions.
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for (auto ext : nominal->getExtensions()) {
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for (unsigned i = 0, n = ext->getProtocols().size(); i != n; ++i) {
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if (ext->getProtocols()[i] == proto) {
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// FIXME: Eventually, filter by owning module.
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assert(ext->getModuleContext() == owningModule);
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return ext->getConformances()[i];
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}
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}
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}
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llvm_unreachable("Unable to find underlying conformance");
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}
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Optional<ConformancePair> ModuleFile::maybeReadConformance(Type conformingType){
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using namespace decls_block;
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BCOffsetRAII lastRecordOffset(DeclTypeCursor);
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SmallVector<uint64_t, 16> scratch;
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auto next = DeclTypeCursor.advance(AF_DontPopBlockAtEnd);
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if (next.Kind != llvm::BitstreamEntry::Record)
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return Nothing;
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unsigned kind = DeclTypeCursor.readRecord(next.ID, scratch);
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switch (kind) {
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case NO_CONFORMANCE: {
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lastRecordOffset.reset();
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DeclID protoID;
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NoConformanceLayout::readRecord(scratch, protoID);
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return std::make_pair(cast<ProtocolDecl>(getDecl(protoID)), nullptr);
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}
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case NORMAL_PROTOCOL_CONFORMANCE:
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// Handled below.
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break;
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case SPECIALIZED_PROTOCOL_CONFORMANCE: {
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DeclID protoID;
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DeclID typeID;
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IdentifierID moduleID;
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unsigned numTypeWitnesses;
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unsigned numSubstitutions;
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ArrayRef<uint64_t> rawIDs;
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SpecializedProtocolConformanceLayout::readRecord(scratch, protoID,
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typeID,
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moduleID,
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numTypeWitnesses,
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numSubstitutions,
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rawIDs);
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ASTContext &ctx = ModuleContext->Ctx;
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auto proto = cast<ProtocolDecl>(getDecl(protoID));
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// Read the substitutions.
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SmallVector<Substitution, 4> substitutions;
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while (numSubstitutions--) {
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auto sub = maybeReadSubstitution();
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assert(sub.hasValue() && "Missing substitution?");
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substitutions.push_back(*sub);
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}
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// Read the type witnesses.
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ArrayRef<uint64_t>::iterator rawIDIter = rawIDs.begin();
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TypeWitnessMap typeWitnesses;
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while (numTypeWitnesses--) {
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// FIXME: We don't actually want to allocate an archetype here; we just
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// want to get an access path within the protocol.
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auto first = cast<AssociatedTypeDecl>(getDecl(*rawIDIter++));
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auto second = maybeReadSubstitution();
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assert(second.hasValue());
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typeWitnesses[first] = *second;
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}
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assert(rawIDIter <= rawIDs.end() && "read too much");
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ProtocolConformance *genericConformance
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= readUnderlyingConformance(proto, typeID, moduleID);
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// Reset the offset RAII to the end of the trailing records.
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lastRecordOffset.reset();
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assert(genericConformance && "Missing generic conformance?");
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return { proto,
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ctx.getSpecializedConformance(conformingType,
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genericConformance,
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substitutions,
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std::move(typeWitnesses)) };
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}
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case INHERITED_PROTOCOL_CONFORMANCE: {
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DeclID protoID;
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DeclID typeID;
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IdentifierID moduleID;
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InheritedProtocolConformanceLayout::readRecord(scratch, protoID,
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typeID,
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moduleID);
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ASTContext &ctx = ModuleContext->Ctx;
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auto proto = cast<ProtocolDecl>(getDecl(protoID));
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ProtocolConformance *inheritedConformance
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= readUnderlyingConformance(proto, typeID, moduleID);
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// Reset the offset RAII to the end of the trailing records.
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lastRecordOffset.reset();
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assert(inheritedConformance && "Missing generic conformance?");
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return { proto,
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ctx.getInheritedConformance(conformingType,
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inheritedConformance) };
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}
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// Not a protocol conformance.
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default:
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return Nothing;
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}
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lastRecordOffset.reset();
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DeclID protoID;
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unsigned valueCount, typeCount, inheritedCount, defaultedCount;
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ArrayRef<uint64_t> rawIDs;
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NormalProtocolConformanceLayout::readRecord(scratch, protoID,
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valueCount, typeCount,
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inheritedCount, defaultedCount,
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rawIDs);
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InheritedConformanceMap inheritedConformances;
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while (inheritedCount--) {
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auto inherited = maybeReadConformance(conformingType);
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assert(inherited.hasValue());
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inheritedConformances.insert(inherited.getValue());
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}
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ASTContext &ctx = ModuleContext->Ctx;
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auto proto = cast<ProtocolDecl>(getDecl(protoID));
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WitnessMap witnesses;
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ArrayRef<uint64_t>::iterator rawIDIter = rawIDs.begin();
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while (valueCount--) {
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auto first = cast<ValueDecl>(getDecl(*rawIDIter++));
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auto second = cast<ValueDecl>(getDecl(*rawIDIter++));
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unsigned substitutionCount = *rawIDIter++;
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SmallVector<Substitution, 8> substitutions;
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while (substitutionCount--) {
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auto sub = maybeReadSubstitution();
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assert(sub.hasValue());
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substitutions.push_back(sub.getValue());
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}
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ProtocolConformanceWitness witness{second, ctx.AllocateCopy(substitutions)};
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witnesses.insert(std::make_pair(first, witness));
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}
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assert(rawIDIter <= rawIDs.end() && "read too much");
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TypeWitnessMap typeWitnesses;
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while (typeCount--) {
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// FIXME: We don't actually want to allocate an archetype here; we just
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// want to get an access path within the protocol.
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auto first = cast<AssociatedTypeDecl>(getDecl(*rawIDIter++));
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auto second = maybeReadSubstitution();
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assert(second.hasValue());
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typeWitnesses[first] = *second;
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}
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assert(rawIDIter <= rawIDs.end() && "read too much");
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SmallVector<ValueDecl *, 4> defaultedDefinitions;
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while (defaultedCount--) {
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auto decl = cast<ValueDecl>(getDecl(*rawIDIter++));
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defaultedDefinitions.push_back(decl);
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}
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assert(rawIDIter <= rawIDs.end() && "read too much");
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// Reset the offset RAII to the end of the trailing records.
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lastRecordOffset.reset();
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return { proto,
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ctx.getConformance(conformingType, proto, ModuleContext,
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std::move(witnesses),
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std::move(typeWitnesses),
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std::move(inheritedConformances),
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defaultedDefinitions) };
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}
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/// Applies protocol conformances to a decl.
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template <typename T>
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void processConformances(ASTContext &ctx, T *decl,
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ArrayRef<ConformancePair> conformances) {
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SmallVector<ProtocolDecl *, 16> protoBuf;
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SmallVector<ProtocolConformance *, 16> conformanceBuf;
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for (auto conformancePair : conformances) {
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auto proto = conformancePair.first;
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auto conformance = conformancePair.second;
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protoBuf.push_back(proto);
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conformanceBuf.push_back(conformance);
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}
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decl->setProtocols(ctx.AllocateCopy(protoBuf));
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decl->setConformances(ctx.AllocateCopy(conformanceBuf));
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}
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Optional<Substitution> ModuleFile::maybeReadSubstitution() {
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BCOffsetRAII lastRecordOffset(DeclTypeCursor);
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auto entry = DeclTypeCursor.advance(AF_DontPopBlockAtEnd);
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if (entry.Kind != llvm::BitstreamEntry::Record)
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return Nothing;
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StringRef blobData;
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SmallVector<uint64_t, 2> scratch;
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unsigned recordID = DeclTypeCursor.readRecord(entry.ID, scratch,
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&blobData);
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if (recordID != decls_block::BOUND_GENERIC_SUBSTITUTION)
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return Nothing;
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TypeID archetypeID, replacementID;
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unsigned numConformances;
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decls_block::BoundGenericSubstitutionLayout::readRecord(scratch,
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archetypeID,
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replacementID,
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numConformances);
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auto archetypeTy = getType(archetypeID)->castTo<ArchetypeType>();
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auto replacementTy = getType(replacementID);
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ASTContext &ctx = ModuleContext->Ctx;
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SmallVector<ProtocolConformance *, 16> conformanceBuf;
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while (numConformances--) {
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auto conformancePair = maybeReadConformance(replacementTy);
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assert(conformancePair.hasValue() && "Missing conformance");
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conformanceBuf.push_back(conformancePair->second);
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}
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lastRecordOffset.reset();
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return Substitution{archetypeTy, replacementTy,
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ctx.AllocateCopy(conformanceBuf)};
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}
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GenericParamList *ModuleFile::maybeReadGenericParams(DeclContext *DC) {
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using namespace decls_block;
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assert(DC && "need a context for the decls in the list");
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BCOffsetRAII lastRecordOffset(DeclTypeCursor);
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SmallVector<uint64_t, 8> scratch;
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StringRef blobData;
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auto next = DeclTypeCursor.advance(AF_DontPopBlockAtEnd);
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if (next.Kind != llvm::BitstreamEntry::Record)
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return nullptr;
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unsigned kind = DeclTypeCursor.readRecord(next.ID, scratch, &blobData);
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if (kind != GENERIC_PARAM_LIST)
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return nullptr;
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ArrayRef<uint64_t> rawArchetypeIDs;
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GenericParamListLayout::readRecord(scratch, rawArchetypeIDs);
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SmallVector<ArchetypeType *, 8> archetypes;
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for (TypeID next : rawArchetypeIDs)
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archetypes.push_back(getType(next)->castTo<ArchetypeType>());
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SmallVector<GenericParam, 8> params;
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SmallVector<Requirement, 8> requirements;
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while (true) {
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lastRecordOffset.reset();
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bool shouldContinue = true;
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auto entry = DeclTypeCursor.advance(AF_DontPopBlockAtEnd);
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if (entry.Kind != llvm::BitstreamEntry::Record)
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break;
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scratch.clear();
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unsigned recordID = DeclTypeCursor.readRecord(entry.ID, scratch,
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&blobData);
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switch (recordID) {
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case GENERIC_PARAM: {
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DeclID paramDeclID;
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GenericParamLayout::readRecord(scratch, paramDeclID);
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auto genericParam = cast<GenericTypeParamDecl>(getDecl(paramDeclID, DC));
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params.push_back(GenericParam(genericParam));
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break;
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}
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case GENERIC_REQUIREMENT: {
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uint8_t rawKind;
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ArrayRef<uint64_t> rawTypeIDs;
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GenericRequirementLayout::readRecord(scratch, rawKind, rawTypeIDs);
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switch (rawKind) {
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case GenericRequirementKind::Conformance: {
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assert(rawTypeIDs.size() == 2);
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auto subject = TypeLoc::withoutLoc(getType(rawTypeIDs[0]));
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auto constraint = TypeLoc::withoutLoc(getType(rawTypeIDs[1]));
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requirements.push_back(Requirement::getConformance(subject,
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SourceLoc(),
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constraint));
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break;
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}
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case GenericRequirementKind::SameType: {
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assert(rawTypeIDs.size() == 2);
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auto first = TypeLoc::withoutLoc(getType(rawTypeIDs[0]));
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auto second = TypeLoc::withoutLoc(getType(rawTypeIDs[1]));
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requirements.push_back(Requirement::getSameType(first,
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SourceLoc(),
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second));
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break;
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}
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default:
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// Unknown requirement kind. Drop the requirement and continue, but log
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// an error so that we don't actually try to generate code.
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error();
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}
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break;
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}
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default:
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// This record is not part of the GenericParamList.
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shouldContinue = false;
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break;
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}
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if (!shouldContinue)
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break;
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}
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|
|
auto paramList = GenericParamList::create(ModuleContext->Ctx, SourceLoc(),
|
|
params, SourceLoc(), requirements,
|
|
SourceLoc());
|
|
paramList->setAllArchetypes(ModuleContext->Ctx.AllocateCopy(archetypes));
|
|
paramList->setOuterParameters(DC->getGenericParamsOfContext());
|
|
|
|
return paramList;
|
|
}
|
|
|
|
Optional<MutableArrayRef<Decl *>> ModuleFile::readMembers() {
|
|
using namespace decls_block;
|
|
|
|
auto entry = DeclTypeCursor.advance();
|
|
if (entry.Kind != llvm::BitstreamEntry::Record)
|
|
return Nothing;
|
|
|
|
SmallVector<uint64_t, 16> memberIDBuffer;
|
|
|
|
unsigned kind = DeclTypeCursor.readRecord(entry.ID, memberIDBuffer);
|
|
assert(kind == DECL_CONTEXT);
|
|
(void)kind;
|
|
|
|
ArrayRef<uint64_t> rawMemberIDs;
|
|
decls_block::DeclContextLayout::readRecord(memberIDBuffer, rawMemberIDs);
|
|
|
|
if (rawMemberIDs.empty())
|
|
return MutableArrayRef<Decl *>();
|
|
|
|
ASTContext &ctx = ModuleContext->Ctx;
|
|
MutableArrayRef<Decl *> members(ctx.Allocate<Decl *>(rawMemberIDs.size()),
|
|
rawMemberIDs.size());
|
|
auto nextMember = members.begin();
|
|
for (DeclID rawID : rawMemberIDs) {
|
|
*nextMember = getDecl(rawID);
|
|
assert(*nextMember && "unable to deserialize next member");
|
|
++nextMember;
|
|
}
|
|
|
|
return members;
|
|
}
|
|
|
|
Identifier ModuleFile::getIdentifier(IdentifierID IID) {
|
|
if (IID == 0)
|
|
return Identifier();
|
|
|
|
assert(IID <= Identifiers.size() && "invalid identifier ID");
|
|
auto identRecord = Identifiers[IID-1];
|
|
|
|
if (identRecord.Offset == 0)
|
|
return identRecord.Ident;
|
|
|
|
assert(!IdentifierData.empty() && "no identifier data in module");
|
|
|
|
StringRef rawStrPtr = IdentifierData.substr(identRecord.Offset);
|
|
size_t terminatorOffset = rawStrPtr.find('\0');
|
|
assert(terminatorOffset != StringRef::npos &&
|
|
"unterminated identifier string data");
|
|
|
|
return ModuleContext->Ctx.getIdentifier(rawStrPtr.slice(0, terminatorOffset));
|
|
}
|
|
|
|
DeclContext *ModuleFile::getDeclContext(DeclID DID) {
|
|
if (DID == 0)
|
|
return ModuleContext;
|
|
|
|
Decl *D = getDecl(DID);
|
|
|
|
if (auto ND = dyn_cast<NominalTypeDecl>(D))
|
|
return ND;
|
|
if (auto ED = dyn_cast<ExtensionDecl>(D))
|
|
return ED;
|
|
if (auto CD = dyn_cast<ConstructorDecl>(D))
|
|
return CD;
|
|
if (auto DD = dyn_cast<DestructorDecl>(D))
|
|
return DD;
|
|
if (auto FD = dyn_cast<FuncDecl>(D))
|
|
return FD->getBody();
|
|
|
|
llvm_unreachable("unknown DeclContext kind");
|
|
}
|
|
|
|
Module *ModuleFile::getModule(Identifier name) {
|
|
if (name.empty())
|
|
return ModuleContext->Ctx.TheBuiltinModule;
|
|
|
|
// FIXME: duplicated from NameBinder::getModule
|
|
// FIXME: provide a real source location.
|
|
if (name == ModuleContext->Name) {
|
|
if (!ShadowedModule) {
|
|
auto importer = ModuleContext->Ctx.getClangModuleLoader();
|
|
assert(importer && "no way to import shadowed module (recursive xref?)");
|
|
ShadowedModule = importer->loadModule(SourceLoc(),
|
|
std::make_pair(name, SourceLoc()));
|
|
assert(ShadowedModule && "missing shadowed module");
|
|
}
|
|
|
|
return ShadowedModule;
|
|
}
|
|
|
|
// FIXME: provide a real source location.
|
|
return ModuleContext->Ctx.getModule(std::make_pair(name, SourceLoc()));
|
|
}
|
|
|
|
|
|
/// Translate from the Serialization assocativity enum values to the AST
|
|
/// strongly-typed enum.
|
|
///
|
|
/// The former is guaranteed to be stable, but may not reflect this version of
|
|
/// the AST.
|
|
static Optional<swift::Associativity> getActualAssociativity(uint8_t assoc) {
|
|
switch (assoc) {
|
|
case serialization::Associativity::LeftAssociative:
|
|
return swift::Associativity::Left;
|
|
case serialization::Associativity::RightAssociative:
|
|
return swift::Associativity::Right;
|
|
case serialization::Associativity::NonAssociative:
|
|
return swift::Associativity::None;
|
|
default:
|
|
return Nothing;
|
|
}
|
|
}
|
|
|
|
Decl *ModuleFile::getDecl(DeclID DID, Optional<DeclContext *> ForcedContext,
|
|
Optional<std::function<void(Decl*)>> DidRecord) {
|
|
if (DID == 0)
|
|
return nullptr;
|
|
|
|
assert(DID <= Decls.size() && "invalid decl ID");
|
|
auto &declOrOffset = Decls[DID-1];
|
|
|
|
if (declOrOffset.isComplete()) {
|
|
if (DidRecord)
|
|
(*DidRecord)(declOrOffset);
|
|
return declOrOffset;
|
|
}
|
|
|
|
BCOffsetRAII restoreOffset(DeclTypeCursor);
|
|
DeclTypeCursor.JumpToBit(declOrOffset);
|
|
auto entry = DeclTypeCursor.advance();
|
|
|
|
if (entry.Kind != llvm::BitstreamEntry::Record) {
|
|
// We don't know how to serialize decls represented by sub-blocks.
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
ASTContext &ctx = ModuleContext->Ctx;
|
|
|
|
SmallVector<uint64_t, 64> scratch;
|
|
StringRef blobData;
|
|
unsigned recordID = DeclTypeCursor.readRecord(entry.ID, scratch, &blobData);
|
|
|
|
switch (recordID) {
|
|
case decls_block::TYPE_ALIAS_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
TypeID underlyingTypeID;
|
|
bool isImplicit;
|
|
|
|
decls_block::TypeAliasLayout::readRecord(scratch, nameID, contextID,
|
|
underlyingTypeID, isImplicit);
|
|
|
|
auto DC = ForcedContext ? *ForcedContext : getDeclContext(contextID);
|
|
auto underlyingType = TypeLoc::withoutLoc(getType(underlyingTypeID));
|
|
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto alias = new (ctx) TypeAliasDecl(SourceLoc(), getIdentifier(nameID),
|
|
SourceLoc(), underlyingType,
|
|
DC, { });
|
|
declOrOffset = alias;
|
|
|
|
if (isImplicit)
|
|
alias->setImplicit();
|
|
|
|
SmallVector<ConformancePair, 16> conformances;
|
|
while (auto conformance = maybeReadConformance(underlyingType.getType()))
|
|
conformances.push_back(*conformance);
|
|
processConformances(ctx, alias, conformances);
|
|
alias->setCheckedInheritanceClause();
|
|
break;
|
|
}
|
|
|
|
case decls_block::GENERIC_TYPE_PARAM_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
unsigned depth;
|
|
unsigned index;
|
|
TypeID superclassID;
|
|
TypeID archetypeID;
|
|
|
|
decls_block::GenericTypeParamDeclLayout::readRecord(scratch, nameID,
|
|
contextID,
|
|
depth,
|
|
index,
|
|
superclassID,
|
|
archetypeID);
|
|
|
|
auto DC = ForcedContext ? *ForcedContext : getDeclContext(contextID);
|
|
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto genericParam = new (ctx) GenericTypeParamDecl(DC,
|
|
getIdentifier(nameID),
|
|
SourceLoc(),
|
|
depth,
|
|
index);
|
|
declOrOffset = genericParam;
|
|
|
|
genericParam->setSuperclass(getType(superclassID));
|
|
genericParam->setArchetype(getType(archetypeID)->castTo<ArchetypeType>());
|
|
|
|
SmallVector<ConformancePair, 16> conformances;
|
|
while (auto conformance
|
|
= maybeReadConformance(genericParam->getDeclaredType()))
|
|
conformances.push_back(*conformance);
|
|
processConformances(ctx, genericParam, conformances);
|
|
genericParam->setCheckedInheritanceClause();
|
|
break;
|
|
}
|
|
|
|
case decls_block::ASSOCIATED_TYPE_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
TypeID superclassID;
|
|
TypeID archetypeID;
|
|
bool isImplicit;
|
|
|
|
decls_block::AssociatedTypeDeclLayout::readRecord(scratch, nameID,
|
|
contextID,
|
|
superclassID,
|
|
archetypeID,
|
|
isImplicit);
|
|
|
|
auto DC = ForcedContext ? *ForcedContext : getDeclContext(contextID);
|
|
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto assocType = new (ctx) AssociatedTypeDecl(DC, SourceLoc(),
|
|
getIdentifier(nameID),
|
|
SourceLoc());
|
|
declOrOffset = assocType;
|
|
|
|
assocType->setSuperclass(getType(superclassID));
|
|
assocType->setArchetype(getType(archetypeID)->castTo<ArchetypeType>());
|
|
if (isImplicit)
|
|
assocType->setImplicit();
|
|
|
|
SmallVector<ConformancePair, 16> conformances;
|
|
while (auto conformance
|
|
= maybeReadConformance(assocType->getDeclaredType()))
|
|
conformances.push_back(*conformance);
|
|
processConformances(ctx, assocType, conformances);
|
|
assocType->setCheckedInheritanceClause();
|
|
break;
|
|
}
|
|
|
|
case decls_block::STRUCT_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
TypeID declaredTypeID;
|
|
bool isImplicit;
|
|
|
|
decls_block::StructLayout::readRecord(scratch, nameID, contextID,
|
|
declaredTypeID, isImplicit);
|
|
|
|
auto DC = getDeclContext(contextID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto genericParams = maybeReadGenericParams(DC);
|
|
|
|
auto theStruct = new (ctx) StructDecl(SourceLoc(), getIdentifier(nameID),
|
|
SourceLoc(), { }, genericParams, DC);
|
|
declOrOffset = theStruct;
|
|
if (DidRecord) {
|
|
(*DidRecord)(theStruct);
|
|
DidRecord.reset();
|
|
}
|
|
|
|
// Set up the type of the struct.
|
|
auto declaredType = getType(declaredTypeID);
|
|
if (!declaredType) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
theStruct->setDeclaredType(declaredType);
|
|
theStruct->setType(MetaTypeType::get(declaredType, ctx));
|
|
|
|
if (isImplicit)
|
|
theStruct->setImplicit();
|
|
if (genericParams)
|
|
for (auto &genericParam : *theStruct->getGenericParams())
|
|
genericParam.getAsTypeParam()->setDeclContext(theStruct);
|
|
|
|
CanType canTy = theStruct->getDeclaredTypeInContext()->getCanonicalType();
|
|
|
|
SmallVector<ConformancePair, 16> conformances;
|
|
while (auto conformance = maybeReadConformance(canTy))
|
|
conformances.push_back(*conformance);
|
|
processConformances(ctx, theStruct, conformances);
|
|
|
|
auto members = readMembers();
|
|
assert(members.hasValue() && "could not read struct members");
|
|
theStruct->setMembers(members.getValue(), SourceRange());
|
|
theStruct->setCheckedInheritanceClause();
|
|
break;
|
|
}
|
|
|
|
case decls_block::CONSTRUCTOR_DECL: {
|
|
DeclID parentID;
|
|
bool isImplicit, isObjC;
|
|
TypeID signatureID;
|
|
DeclID implicitThisID;
|
|
|
|
decls_block::ConstructorLayout::readRecord(scratch, parentID, isImplicit,
|
|
isObjC, signatureID,
|
|
implicitThisID);
|
|
auto parent = getDeclContext(parentID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto thisDecl = cast<VarDecl>(getDecl(implicitThisID, nullptr));
|
|
auto genericParams = maybeReadGenericParams(parent);
|
|
|
|
auto ctor = new (ctx) ConstructorDecl(ctx.getIdentifier("constructor"),
|
|
SourceLoc(), /*args=*/nullptr,
|
|
thisDecl, genericParams, parent);
|
|
declOrOffset = ctor;
|
|
thisDecl->setDeclContext(ctor);
|
|
|
|
Pattern *args = maybeReadPattern();
|
|
assert(args && "missing arguments for constructor");
|
|
ctor->setArguments(args);
|
|
|
|
// This must be set after recording the constructor in the map.
|
|
// A polymorphic constructor type needs to refer to the constructor to get
|
|
// its generic parameters.
|
|
ctor->setType(getType(signatureID));
|
|
|
|
if (isImplicit)
|
|
ctor->setImplicit();
|
|
ctor->setIsObjC(isObjC);
|
|
|
|
if (genericParams)
|
|
for (auto &genericParam : *ctor->getGenericParams())
|
|
genericParam.getAsTypeParam()->setDeclContext(ctor);
|
|
|
|
break;
|
|
}
|
|
|
|
case decls_block::VAR_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
bool isImplicit, isObjC, isIBOutlet;
|
|
TypeID typeID;
|
|
DeclID getterID, setterID;
|
|
DeclID overriddenID;
|
|
|
|
decls_block::VarLayout::readRecord(scratch, nameID, contextID, isImplicit,
|
|
isObjC, isIBOutlet, typeID,
|
|
getterID, setterID, overriddenID);
|
|
|
|
auto DC = ForcedContext ? *ForcedContext : getDeclContext(contextID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto var = new (ctx) VarDecl(SourceLoc(), getIdentifier(nameID),
|
|
getType(typeID), DC);
|
|
|
|
declOrOffset = var;
|
|
|
|
if (getterID || setterID) {
|
|
var->setProperty(ctx, SourceLoc(),
|
|
cast_or_null<FuncDecl>(getDecl(getterID)),
|
|
cast_or_null<FuncDecl>(getDecl(setterID)),
|
|
SourceLoc());
|
|
}
|
|
|
|
if (isImplicit)
|
|
var->setImplicit();
|
|
var->setIsObjC(isObjC);
|
|
if (isIBOutlet)
|
|
var->getMutableAttrs().IBOutlet = true;
|
|
|
|
var->setOverriddenDecl(cast_or_null<VarDecl>(getDecl(overriddenID)));
|
|
break;
|
|
}
|
|
|
|
case decls_block::FUNC_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
bool isImplicit;
|
|
bool isClassMethod;
|
|
bool isAssignmentOrConversion;
|
|
bool isObjC, isIBAction;
|
|
TypeID signatureID;
|
|
DeclID associatedDeclID;
|
|
DeclID overriddenID;
|
|
|
|
decls_block::FuncLayout::readRecord(scratch, nameID, contextID, isImplicit,
|
|
isClassMethod, isAssignmentOrConversion,
|
|
isObjC, isIBAction, signatureID,
|
|
associatedDeclID, overriddenID);
|
|
|
|
auto DC = getDeclContext(contextID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
// Read generic params before reading the type, because the type may
|
|
// reference generic parameters, and we want them to have a dummy
|
|
// DeclContext for now.
|
|
GenericParamList *genericParams = maybeReadGenericParams(DC);
|
|
|
|
auto fn = new (ctx) FuncDecl(SourceLoc(), SourceLoc(),
|
|
getIdentifier(nameID), SourceLoc(),
|
|
genericParams, /*type=*/nullptr,
|
|
/*body=*/nullptr, DC);
|
|
declOrOffset = fn;
|
|
|
|
// This must be set after recording the constructor in the map.
|
|
// A polymorphic constructor type needs to refer to the constructor to get
|
|
// its generic parameters.
|
|
auto signature = getType(signatureID)->castTo<AnyFunctionType>();
|
|
fn->setType(signature);
|
|
|
|
SmallVector<Pattern *, 16> patternBuf;
|
|
while (Pattern *pattern = maybeReadPattern())
|
|
patternBuf.push_back(pattern);
|
|
|
|
assert(!patternBuf.empty());
|
|
size_t patternCount = patternBuf.size() / 2;
|
|
assert(patternCount * 2 == patternBuf.size() &&
|
|
"two sets of patterns don't match up");
|
|
|
|
ArrayRef<Pattern *> patterns(patternBuf);
|
|
ArrayRef<Pattern *> argPatterns = patterns.slice(0, patternCount);
|
|
ArrayRef<Pattern *> bodyPatterns = patterns.slice(patternCount);
|
|
|
|
auto body = FuncExpr::create(ctx, SourceLoc(),
|
|
argPatterns, bodyPatterns,
|
|
TypeLoc::withoutLoc(signature->getResult()),
|
|
DC);
|
|
body->setType(signature);
|
|
fn->setBody(body);
|
|
|
|
if (genericParams)
|
|
for (auto &genericParam : *fn->getGenericParams())
|
|
genericParam.getAsTypeParam()->setDeclContext(body);
|
|
|
|
fn->setOverriddenDecl(cast_or_null<FuncDecl>(getDecl(overriddenID)));
|
|
|
|
fn->setStatic(isClassMethod);
|
|
if (isImplicit)
|
|
fn->setImplicit();
|
|
if (!blobData.empty())
|
|
fn->getMutableAttrs().AsmName = ctx.AllocateCopy(blobData);
|
|
if (isAssignmentOrConversion) {
|
|
if (fn->isOperator())
|
|
fn->getMutableAttrs().Assignment = true;
|
|
else
|
|
fn->getMutableAttrs().Conversion = true;
|
|
}
|
|
fn->setIsObjC(isObjC);
|
|
if (isIBAction)
|
|
fn->getMutableAttrs().IBAction = true;
|
|
|
|
if (Decl *associated = getDecl(associatedDeclID)) {
|
|
if (auto op = dyn_cast<OperatorDecl>(associated)) {
|
|
fn->setOperatorDecl(op);
|
|
|
|
if (isa<PrefixOperatorDecl>(op))
|
|
fn->getMutableAttrs().ExplicitPrefix = true;
|
|
else if (isa<PostfixOperatorDecl>(op))
|
|
fn->getMutableAttrs().ExplicitPostfix = true;
|
|
// Note that an explicit [infix] is not required.
|
|
}
|
|
// Otherwise, unknown associated decl kind.
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case decls_block::PATTERN_BINDING_DECL: {
|
|
DeclID contextID;
|
|
bool isImplicit;
|
|
|
|
decls_block::PatternBindingLayout::readRecord(scratch, contextID,
|
|
isImplicit);
|
|
Pattern *pattern = maybeReadPattern();
|
|
assert(pattern);
|
|
|
|
auto binding = new (ctx) PatternBindingDecl(SourceLoc(), pattern,
|
|
/*init=*/nullptr,
|
|
getDeclContext(contextID));
|
|
declOrOffset = binding;
|
|
|
|
if (isImplicit)
|
|
binding->setImplicit();
|
|
|
|
break;
|
|
}
|
|
|
|
case decls_block::PROTOCOL_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
bool isImplicit, isClassProtocol, isObjC;
|
|
ArrayRef<uint64_t> protocolIDs;
|
|
|
|
decls_block::ProtocolLayout::readRecord(scratch, nameID, contextID,
|
|
isImplicit, isClassProtocol, isObjC,
|
|
protocolIDs);
|
|
|
|
auto DC = getDeclContext(contextID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto proto = new (ctx) ProtocolDecl(DC, SourceLoc(), SourceLoc(),
|
|
getIdentifier(nameID), { });
|
|
declOrOffset = proto;
|
|
if (DidRecord) {
|
|
(*DidRecord)(proto);
|
|
DidRecord.reset();
|
|
}
|
|
|
|
if (isImplicit)
|
|
proto->setImplicit();
|
|
if (isClassProtocol)
|
|
proto->getMutableAttrs().ClassProtocol = true;
|
|
proto->setIsObjC(isObjC);
|
|
|
|
// Deserialize the list of protocols.
|
|
SmallVector<ProtocolDecl *, 4> protocols;
|
|
for (auto protoID : protocolIDs) {
|
|
protocols.push_back(cast<ProtocolDecl>(getDecl(protoID)));
|
|
}
|
|
proto->setProtocols(ctx.AllocateCopy(protocols));
|
|
|
|
auto members = readMembers();
|
|
assert(members.hasValue() && "could not read struct members");
|
|
proto->setMembers(members.getValue(), SourceRange());
|
|
proto->setCheckedInheritanceClause();
|
|
proto->setCircularityCheck(CircularityCheck::Checked);
|
|
break;
|
|
}
|
|
|
|
case decls_block::PREFIX_OPERATOR_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
|
|
decls_block::PrefixOperatorLayout::readRecord(scratch, nameID, contextID);
|
|
declOrOffset = new (ctx) PrefixOperatorDecl(getDeclContext(contextID),
|
|
SourceLoc(), SourceLoc(),
|
|
getIdentifier(nameID),
|
|
SourceLoc(), SourceLoc(),
|
|
SourceLoc());
|
|
break;
|
|
}
|
|
|
|
case decls_block::POSTFIX_OPERATOR_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
|
|
decls_block::PostfixOperatorLayout::readRecord(scratch, nameID, contextID);
|
|
declOrOffset = new (ctx) PostfixOperatorDecl(getDeclContext(contextID),
|
|
SourceLoc(), SourceLoc(),
|
|
getIdentifier(nameID),
|
|
SourceLoc(), SourceLoc(),
|
|
SourceLoc());
|
|
break;
|
|
}
|
|
|
|
case decls_block::INFIX_OPERATOR_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
uint8_t rawAssociativity;
|
|
unsigned precedence;
|
|
|
|
decls_block::InfixOperatorLayout::readRecord(scratch, nameID, contextID,
|
|
rawAssociativity, precedence);
|
|
|
|
auto associativity = getActualAssociativity(rawAssociativity);
|
|
if (!associativity.hasValue()) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
InfixData infixData(precedence, associativity.getValue());
|
|
|
|
declOrOffset = new (ctx) InfixOperatorDecl(getDeclContext(contextID),
|
|
SourceLoc(), SourceLoc(),
|
|
getIdentifier(nameID),
|
|
SourceLoc(), SourceLoc(),
|
|
SourceLoc(), SourceLoc(),
|
|
SourceLoc(), SourceLoc(),
|
|
SourceLoc(), infixData);
|
|
break;
|
|
}
|
|
|
|
case decls_block::CLASS_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
TypeID declaredTypeID;
|
|
bool isImplicit, isObjC;
|
|
TypeID superclassID;
|
|
decls_block::ClassLayout::readRecord(scratch, nameID, contextID,
|
|
declaredTypeID, isImplicit, isObjC,
|
|
superclassID);
|
|
|
|
auto DC = getDeclContext(contextID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto genericParams = maybeReadGenericParams(DC);
|
|
|
|
auto theClass = new (ctx) ClassDecl(SourceLoc(), getIdentifier(nameID),
|
|
SourceLoc(), { }, genericParams, DC);
|
|
declOrOffset = theClass;
|
|
if (DidRecord) {
|
|
(*DidRecord)(theClass);
|
|
DidRecord.reset();
|
|
}
|
|
|
|
// Set up the type of the union.
|
|
auto declaredType = getType(declaredTypeID);
|
|
if (!declaredType) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
theClass->setDeclaredType(declaredType);
|
|
theClass->setType(MetaTypeType::get(declaredType, ctx));
|
|
|
|
if (isImplicit)
|
|
theClass->setImplicit();
|
|
if (superclassID)
|
|
theClass->setSuperclass(getType(superclassID));
|
|
if (genericParams)
|
|
for (auto &genericParam : *theClass->getGenericParams())
|
|
genericParam.getAsTypeParam()->setDeclContext(theClass);
|
|
theClass->setIsObjC(isObjC);
|
|
|
|
CanType canTy = theClass->getDeclaredTypeInContext()->getCanonicalType();
|
|
|
|
SmallVector<ConformancePair, 16> conformances;
|
|
while (auto conformance = maybeReadConformance(canTy))
|
|
conformances.push_back(*conformance);
|
|
processConformances(ctx, theClass, conformances);
|
|
|
|
auto members = readMembers();
|
|
assert(members.hasValue() && "could not read class members");
|
|
theClass->setMembers(members.getValue(), SourceRange());
|
|
theClass->setCheckedInheritanceClause();
|
|
theClass->setCircularityCheck(CircularityCheck::Checked);
|
|
break;
|
|
}
|
|
|
|
case decls_block::UNION_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
TypeID declaredTypeID;
|
|
bool isImplicit;
|
|
|
|
decls_block::UnionLayout::readRecord(scratch, nameID, contextID,
|
|
declaredTypeID, isImplicit);
|
|
|
|
auto DC = getDeclContext(contextID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto genericParams = maybeReadGenericParams(DC);
|
|
|
|
// FIXME Preserve the isEnum bit.
|
|
auto theUnion = new (ctx) UnionDecl(SourceLoc(),
|
|
/*isEnum*/ false,
|
|
getIdentifier(nameID),
|
|
SourceLoc(), { },
|
|
genericParams, DC);
|
|
|
|
declOrOffset = theUnion;
|
|
if (DidRecord) {
|
|
(*DidRecord)(theUnion);
|
|
DidRecord.reset();
|
|
}
|
|
|
|
// Set up the type of the union.
|
|
auto declaredType = getType(declaredTypeID);
|
|
if (!declaredType) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
theUnion->setDeclaredType(declaredType);
|
|
theUnion->setType(MetaTypeType::get(declaredType, ctx));
|
|
|
|
if (isImplicit)
|
|
theUnion->setImplicit();
|
|
if (genericParams)
|
|
for (auto &genericParam : *theUnion->getGenericParams())
|
|
genericParam.getAsTypeParam()->setDeclContext(theUnion);
|
|
|
|
CanType canTy = theUnion->getDeclaredTypeInContext()->getCanonicalType();
|
|
|
|
SmallVector<ConformancePair, 16> conformances;
|
|
while (auto conformance = maybeReadConformance(canTy))
|
|
conformances.push_back(*conformance);
|
|
processConformances(ctx, theUnion, conformances);
|
|
|
|
auto members = readMembers();
|
|
assert(members.hasValue() && "could not read union members");
|
|
theUnion->setMembers(members.getValue(), SourceRange());
|
|
theUnion->setCheckedInheritanceClause();
|
|
break;
|
|
}
|
|
|
|
case decls_block::UNION_ELEMENT_DECL: {
|
|
IdentifierID nameID;
|
|
DeclID contextID;
|
|
TypeID argTypeID, resTypeID, ctorTypeID;
|
|
bool isImplicit;
|
|
|
|
decls_block::UnionElementLayout::readRecord(scratch, nameID, contextID,
|
|
argTypeID, resTypeID,
|
|
ctorTypeID,
|
|
isImplicit);
|
|
|
|
DeclContext *DC = getDeclContext(contextID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto argTy = getType(argTypeID);
|
|
auto resTy = getType(resTypeID);
|
|
auto elem = new (ctx) UnionElementDecl(SourceLoc(),
|
|
SourceLoc(),
|
|
getIdentifier(nameID),
|
|
TypeLoc::withoutLoc(argTy),
|
|
SourceLoc(),
|
|
TypeLoc::withoutLoc(resTy),
|
|
DC);
|
|
declOrOffset = elem;
|
|
|
|
elem->setType(getType(ctorTypeID));
|
|
if (isImplicit)
|
|
elem->setImplicit();
|
|
|
|
break;
|
|
}
|
|
|
|
case decls_block::SUBSCRIPT_DECL: {
|
|
DeclID contextID;
|
|
bool isImplicit, isObjC;
|
|
TypeID declTypeID, elemTypeID;
|
|
DeclID getterID, setterID;
|
|
DeclID overriddenID;
|
|
|
|
decls_block::SubscriptLayout::readRecord(scratch, contextID, isImplicit,
|
|
isObjC, declTypeID, elemTypeID,
|
|
getterID, setterID,
|
|
overriddenID);
|
|
|
|
auto DC = getDeclContext(contextID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
Pattern *indices = maybeReadPattern();
|
|
assert(indices);
|
|
|
|
auto elemTy = TypeLoc::withoutLoc(getType(elemTypeID));
|
|
auto getter = cast_or_null<FuncDecl>(getDecl(getterID));
|
|
auto setter = cast_or_null<FuncDecl>(getDecl(setterID));
|
|
|
|
auto subscript = new (ctx) SubscriptDecl(ctx.getIdentifier("__subscript"),
|
|
SourceLoc(), indices, SourceLoc(),
|
|
elemTy, SourceRange(),
|
|
getter, setter, DC);
|
|
declOrOffset = subscript;
|
|
|
|
subscript->setType(getType(declTypeID));
|
|
if (isImplicit)
|
|
subscript->setImplicit();
|
|
subscript->setIsObjC(isObjC);
|
|
|
|
auto overriddenDecl = cast_or_null<SubscriptDecl>(getDecl(overriddenID));
|
|
subscript->setOverriddenDecl(overriddenDecl);
|
|
|
|
if (getter)
|
|
getter->makeGetter(subscript);
|
|
if (setter)
|
|
setter->makeSetter(subscript);
|
|
break;
|
|
}
|
|
|
|
case decls_block::EXTENSION_DECL: {
|
|
TypeID baseID;
|
|
DeclID contextID;
|
|
bool isImplicit;
|
|
|
|
decls_block::ExtensionLayout::readRecord(scratch, baseID, contextID,
|
|
isImplicit);
|
|
|
|
auto DC = getDeclContext(contextID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto baseTy = TypeLoc::withoutLoc(getType(baseID));
|
|
|
|
auto extension = new (ctx) ExtensionDecl(SourceLoc(), baseTy, { }, DC);
|
|
declOrOffset = extension;
|
|
|
|
if (isImplicit)
|
|
extension->setImplicit();
|
|
|
|
CanType canBaseTy = baseTy.getType()->getCanonicalType();
|
|
|
|
SmallVector<ConformancePair, 16> conformances;
|
|
while (auto conformance = maybeReadConformance(canBaseTy))
|
|
conformances.push_back(*conformance);
|
|
processConformances(ctx, extension, conformances);
|
|
|
|
auto members = readMembers();
|
|
assert(members.hasValue() && "could not read extension members");
|
|
extension->setMembers(members.getValue(), SourceRange());
|
|
|
|
baseTy.getType()->getAnyNominal()->addExtension(extension);
|
|
extension->setCheckedInheritanceClause();
|
|
break;
|
|
}
|
|
|
|
case decls_block::DESTRUCTOR_DECL: {
|
|
DeclID parentID;
|
|
bool isImplicit, isObjC;
|
|
TypeID signatureID;
|
|
DeclID implicitThisID;
|
|
|
|
decls_block::DestructorLayout::readRecord(scratch, parentID, isImplicit,
|
|
isObjC, signatureID,
|
|
implicitThisID);
|
|
|
|
DeclContext *parent = getDeclContext(parentID);
|
|
if (declOrOffset.isComplete())
|
|
break;
|
|
|
|
auto thisDecl = cast<VarDecl>(getDecl(implicitThisID, nullptr));
|
|
|
|
auto dtor = new (ctx) DestructorDecl(ctx.getIdentifier("destructor"),
|
|
SourceLoc(), thisDecl, parent);
|
|
declOrOffset = dtor;
|
|
thisDecl->setDeclContext(dtor);
|
|
|
|
dtor->setType(getType(signatureID));
|
|
if (isImplicit)
|
|
dtor->setImplicit();
|
|
dtor->setIsObjC(isObjC);
|
|
|
|
break;
|
|
}
|
|
|
|
case decls_block::XREF: {
|
|
uint8_t kind;
|
|
TypeID expectedTypeID;
|
|
bool isWithinExtension;
|
|
ArrayRef<uint64_t> rawAccessPath;
|
|
|
|
decls_block::XRefLayout::readRecord(scratch, kind, expectedTypeID,
|
|
isWithinExtension, rawAccessPath);
|
|
|
|
// First, find the module this reference is referring to.
|
|
Module *M = getModule(getIdentifier(rawAccessPath.front()));
|
|
assert(M && "missing dependency");
|
|
rawAccessPath = rawAccessPath.slice(1);
|
|
|
|
switch (kind) {
|
|
case XRefKind::SwiftValue:
|
|
case XRefKind::SwiftGenericParameter: {
|
|
// Start by looking up the top-level decl in the module.
|
|
Module *baseModule = M;
|
|
if (isWithinExtension) {
|
|
baseModule = getModule(getIdentifier(rawAccessPath.front()));
|
|
assert(baseModule && "missing dependency");
|
|
rawAccessPath = rawAccessPath.slice(1);
|
|
}
|
|
|
|
SmallVector<ValueDecl *, 8> values;
|
|
baseModule->lookupValue(Module::AccessPathTy(),
|
|
getIdentifier(rawAccessPath.front()),
|
|
NLKind::QualifiedLookup,
|
|
values);
|
|
// FIXME: Yuck. The concept of a shadowed module needs to be moved up
|
|
// higher, and it needs to be clear whether they are always reexported.
|
|
if (auto loadedModule = dyn_cast<SerializedModule>(baseModule)) {
|
|
if (loadedModule->File && loadedModule->File->ShadowedModule) {
|
|
Module *shadowed = loadedModule->File->ShadowedModule;
|
|
shadowed->lookupValue(Module::AccessPathTy(),
|
|
getIdentifier(rawAccessPath.front()),
|
|
NLKind::QualifiedLookup, values);
|
|
}
|
|
}
|
|
rawAccessPath = rawAccessPath.slice(1);
|
|
|
|
// Then, follow the chain of nested ValueDecls until we run out of
|
|
// identifiers in the access path.
|
|
SmallVector<ValueDecl *, 8> baseValues;
|
|
for (IdentifierID nextID : rawAccessPath) {
|
|
baseValues.swap(values);
|
|
values.clear();
|
|
for (auto base : baseValues) {
|
|
if (auto nominal = dyn_cast<NominalTypeDecl>(base)) {
|
|
Identifier memberName = getIdentifier(nextID);
|
|
auto members = nominal->lookupDirect(memberName);
|
|
values.append(members.begin(), members.end());
|
|
}
|
|
}
|
|
}
|
|
|
|
// If we have a type to validate against, filter out any ValueDecls that
|
|
// don't match that type.
|
|
CanType expectedTy;
|
|
if (kind == XRefKind::SwiftValue)
|
|
if (Type maybeExpectedTy = getType(expectedTypeID))
|
|
expectedTy = maybeExpectedTy->getCanonicalType();
|
|
|
|
ValueDecl *result = nullptr;
|
|
for (auto value : values) {
|
|
if (!value->hasClangNode() && value->getModuleContext() != M)
|
|
continue;
|
|
if (expectedTy && value->getType()->getCanonicalType() != expectedTy)
|
|
continue;
|
|
|
|
if (!result || result == value) {
|
|
result = value;
|
|
continue;
|
|
}
|
|
|
|
// It's an error if more than one value has the same type.
|
|
// FIXME: Functions and constructors can overload based on parameter
|
|
// names.
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
// It's an error if lookup doesn't actually find anything -- that means
|
|
// the module's out of date.
|
|
if (!result) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
if (kind == XRefKind::SwiftGenericParameter) {
|
|
GenericParamList *paramList = nullptr;
|
|
|
|
if (auto nominal = dyn_cast<NominalTypeDecl>(result))
|
|
paramList = nominal->getGenericParams();
|
|
else if (auto fn = dyn_cast<FuncDecl>(result))
|
|
paramList = fn->getGenericParams();
|
|
else if (auto ctor = dyn_cast<ConstructorDecl>(result))
|
|
paramList = ctor->getGenericParams();
|
|
|
|
if (!paramList) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
if (expectedTypeID >= paramList->size()) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
result = paramList->getParams()[expectedTypeID].getDecl();
|
|
assert(result);
|
|
}
|
|
|
|
declOrOffset = result;
|
|
break;
|
|
}
|
|
case XRefKind::SwiftOperator: {
|
|
assert(rawAccessPath.size() == 1 &&
|
|
"can't import operators not at module scope");
|
|
Identifier opName = getIdentifier(rawAccessPath.back());
|
|
|
|
switch (expectedTypeID) {
|
|
case OperatorKind::Infix: {
|
|
auto op = M->lookupInfixOperator(opName);
|
|
declOrOffset = op.hasValue() ? op.getValue() : nullptr;
|
|
break;
|
|
}
|
|
case OperatorKind::Prefix: {
|
|
auto op = M->lookupPrefixOperator(opName);
|
|
declOrOffset = op.hasValue() ? op.getValue() : nullptr;
|
|
break;
|
|
}
|
|
case OperatorKind::Postfix: {
|
|
auto op = M->lookupPostfixOperator(opName);
|
|
declOrOffset = op.hasValue() ? op.getValue() : nullptr;
|
|
break;
|
|
}
|
|
default:
|
|
// Unknown operator kind.
|
|
error();
|
|
return nullptr;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
// Unknown cross-reference kind.
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
// We don't know how to deserialize this kind of decl.
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
if (DidRecord)
|
|
(*DidRecord)(declOrOffset);
|
|
return declOrOffset;
|
|
}
|
|
|
|
/// Translate from the Serialization calling convention enum values to the AST
|
|
/// strongly-typed enum.
|
|
///
|
|
/// The former is guaranteed to be stable, but may not reflect this version of
|
|
/// the AST.
|
|
static Optional<swift::AbstractCC> getActualCC(uint8_t cc) {
|
|
switch (cc) {
|
|
#define CASE(THE_CC) \
|
|
case serialization::AbstractCC::THE_CC: \
|
|
return swift::AbstractCC::THE_CC;
|
|
CASE(C)
|
|
CASE(ObjCMethod)
|
|
CASE(Freestanding)
|
|
CASE(Method)
|
|
#undef CASE
|
|
default:
|
|
return Nothing;
|
|
}
|
|
}
|
|
|
|
/// Translate from the serialization Ownership enumerators, which are
|
|
/// guaranteed to be stable, to the AST ones.
|
|
static
|
|
Optional<swift::Ownership> getActualOwnership(serialization::Ownership raw) {
|
|
switch (raw) {
|
|
case serialization::Ownership::Strong: return swift::Ownership::Strong;
|
|
case serialization::Ownership::Unowned: return swift::Ownership::Unowned;
|
|
case serialization::Ownership::Weak: return swift::Ownership::Weak;
|
|
}
|
|
return Nothing;
|
|
}
|
|
|
|
Type ModuleFile::getType(TypeID TID) {
|
|
if (TID == 0)
|
|
return Type();
|
|
|
|
assert(TID <= Types.size() && "invalid decl ID");
|
|
auto &typeOrOffset = Types[TID-1];
|
|
|
|
if (typeOrOffset.isComplete())
|
|
return typeOrOffset;
|
|
|
|
BCOffsetRAII restoreOffset(DeclTypeCursor);
|
|
DeclTypeCursor.JumpToBit(typeOrOffset);
|
|
auto entry = DeclTypeCursor.advance();
|
|
|
|
if (entry.Kind != llvm::BitstreamEntry::Record) {
|
|
// We don't know how to serialize types represented by sub-blocks.
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
ASTContext &ctx = ModuleContext->Ctx;
|
|
|
|
SmallVector<uint64_t, 64> scratch;
|
|
StringRef blobData;
|
|
unsigned recordID = DeclTypeCursor.readRecord(entry.ID, scratch, &blobData);
|
|
|
|
switch (recordID) {
|
|
case decls_block::NAME_ALIAS_TYPE: {
|
|
DeclID underlyingID;
|
|
decls_block::NameAliasTypeLayout::readRecord(scratch, underlyingID);
|
|
auto alias = dyn_cast_or_null<TypeAliasDecl>(getDecl(underlyingID));
|
|
if (!alias) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
typeOrOffset = alias->getDeclaredType();
|
|
break;
|
|
}
|
|
|
|
case decls_block::NOMINAL_TYPE: {
|
|
DeclID declID;
|
|
TypeID parentID;
|
|
decls_block::NominalTypeLayout::readRecord(scratch, declID, parentID);
|
|
|
|
Type parentTy = getType(parentID);
|
|
|
|
// Record the type as soon as possible. Members of a nominal type often
|
|
// try to refer back to the type.
|
|
getDecl(declID, Nothing, makeStackLambda([&](Decl *D) {
|
|
// FIXME: Hack for "typedef struct CGRect CGRect". In the long run we need
|
|
// something less brittle that would also handle pointer typedefs and
|
|
// typedefs that just /happen/ to match a tagged name but don't actually
|
|
// point to the tagged type.
|
|
if (auto alias = dyn_cast<TypeAliasDecl>(D))
|
|
D = alias->getUnderlyingType()->getAnyNominal();
|
|
auto nominal = cast<NominalTypeDecl>(D);
|
|
typeOrOffset = NominalType::get(nominal, parentTy, ctx);
|
|
}));
|
|
|
|
assert(typeOrOffset.isComplete());
|
|
break;
|
|
}
|
|
|
|
case decls_block::PAREN_TYPE: {
|
|
TypeID underlyingID;
|
|
decls_block::ParenTypeLayout::readRecord(scratch, underlyingID);
|
|
typeOrOffset = ParenType::get(ctx, getType(underlyingID));
|
|
break;
|
|
}
|
|
|
|
case decls_block::TUPLE_TYPE: {
|
|
// The tuple record itself is empty. Read all trailing elements.
|
|
SmallVector<TupleTypeElt, 8> elements;
|
|
while (true) {
|
|
auto entry = DeclTypeCursor.advance(AF_DontPopBlockAtEnd);
|
|
if (entry.Kind != llvm::BitstreamEntry::Record)
|
|
break;
|
|
|
|
scratch.clear();
|
|
unsigned recordID = DeclTypeCursor.readRecord(entry.ID, scratch,
|
|
&blobData);
|
|
if (recordID != decls_block::TUPLE_TYPE_ELT)
|
|
break;
|
|
|
|
IdentifierID nameID;
|
|
TypeID typeID;
|
|
uint8_t rawDefArg;
|
|
bool isVararg;
|
|
decls_block::TupleTypeEltLayout::readRecord(scratch, nameID, typeID,
|
|
rawDefArg, isVararg);
|
|
|
|
DefaultArgumentKind defArg = DefaultArgumentKind::None;
|
|
if (auto actualDefArg = getActualDefaultArgKind(rawDefArg))
|
|
defArg = *actualDefArg;
|
|
elements.push_back({getType(typeID), getIdentifier(nameID), defArg,
|
|
isVararg});
|
|
}
|
|
|
|
typeOrOffset = TupleType::get(elements, ctx);
|
|
break;
|
|
}
|
|
|
|
case decls_block::FUNCTION_TYPE: {
|
|
TypeID inputID;
|
|
TypeID resultID;
|
|
uint8_t rawCallingConvention;
|
|
bool autoClosure;
|
|
bool thin;
|
|
bool noreturn;
|
|
bool blockCompatible;
|
|
|
|
decls_block::FunctionTypeLayout::readRecord(scratch, inputID, resultID,
|
|
rawCallingConvention,
|
|
autoClosure, thin,
|
|
noreturn,
|
|
blockCompatible);
|
|
auto callingConvention = getActualCC(rawCallingConvention);
|
|
if (!callingConvention.hasValue()) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
auto Info = FunctionType::ExtInfo(callingConvention.getValue(),
|
|
thin,
|
|
noreturn,
|
|
autoClosure,
|
|
blockCompatible);
|
|
|
|
typeOrOffset = FunctionType::get(getType(inputID), getType(resultID),
|
|
Info, ctx);
|
|
break;
|
|
}
|
|
|
|
case decls_block::METATYPE_TYPE: {
|
|
TypeID instanceID;
|
|
decls_block::MetaTypeTypeLayout::readRecord(scratch, instanceID);
|
|
typeOrOffset = MetaTypeType::get(getType(instanceID), ctx);
|
|
break;
|
|
}
|
|
|
|
case decls_block::LVALUE_TYPE: {
|
|
TypeID objectTypeID;
|
|
bool isImplicit, isNonSettable;
|
|
decls_block::LValueTypeLayout::readRecord(scratch, objectTypeID,
|
|
isImplicit, isNonSettable);
|
|
LValueType::Qual quals;
|
|
if (isImplicit)
|
|
quals |= LValueType::Qual::Implicit;
|
|
if (isNonSettable)
|
|
quals |= LValueType::Qual::NonSettable;
|
|
|
|
typeOrOffset = LValueType::get(getType(objectTypeID), quals, ctx);
|
|
break;
|
|
}
|
|
|
|
case decls_block::REFERENCE_STORAGE_TYPE: {
|
|
uint8_t rawOwnership;
|
|
TypeID referentTypeID;
|
|
decls_block::ReferenceStorageTypeLayout::readRecord(scratch, rawOwnership,
|
|
referentTypeID);
|
|
|
|
auto ownership =
|
|
getActualOwnership((serialization::Ownership) rawOwnership);
|
|
if (!ownership.hasValue()) {
|
|
error();
|
|
break;
|
|
}
|
|
|
|
typeOrOffset = ReferenceStorageType::get(getType(referentTypeID),
|
|
ownership.getValue(), ctx);
|
|
break;
|
|
}
|
|
|
|
case decls_block::ARCHETYPE_TYPE: {
|
|
IdentifierID nameID;
|
|
bool isPrimary;
|
|
TypeID parentOrIndex;
|
|
TypeID superclassID;
|
|
ArrayRef<uint64_t> rawConformanceIDs;
|
|
|
|
decls_block::ArchetypeTypeLayout::readRecord(scratch, nameID, isPrimary,
|
|
parentOrIndex, superclassID,
|
|
rawConformanceIDs);
|
|
|
|
ArchetypeType *parent = nullptr;
|
|
Type superclass;
|
|
Optional<unsigned> index;
|
|
SmallVector<ProtocolDecl *, 4> conformances;
|
|
|
|
if (isPrimary)
|
|
index = parentOrIndex;
|
|
else
|
|
parent = getType(parentOrIndex)->castTo<ArchetypeType>();
|
|
|
|
superclass = getType(superclassID);
|
|
|
|
for (DeclID protoID : rawConformanceIDs)
|
|
conformances.push_back(cast<ProtocolDecl>(getDecl(protoID)));
|
|
|
|
// See if we triggered deserialization through our conformances.
|
|
if (typeOrOffset.isComplete())
|
|
break;
|
|
|
|
auto archetype = ArchetypeType::getNew(ctx, parent, getIdentifier(nameID),
|
|
conformances, superclass, index);
|
|
typeOrOffset = archetype;
|
|
|
|
auto entry = DeclTypeCursor.advance();
|
|
if (entry.Kind != llvm::BitstreamEntry::Record) {
|
|
error();
|
|
break;
|
|
}
|
|
|
|
scratch.clear();
|
|
unsigned kind = DeclTypeCursor.readRecord(entry.ID, scratch);
|
|
if (kind != decls_block::ARCHETYPE_NESTED_TYPE_NAMES) {
|
|
error();
|
|
break;
|
|
}
|
|
|
|
ArrayRef<uint64_t> rawNameIDs;
|
|
decls_block::ArchetypeNestedTypeNamesLayout::readRecord(scratch,
|
|
rawNameIDs);
|
|
|
|
entry = DeclTypeCursor.advance();
|
|
if (entry.Kind != llvm::BitstreamEntry::Record) {
|
|
error();
|
|
break;
|
|
}
|
|
|
|
SmallVector<uint64_t, 16> scratch2;
|
|
kind = DeclTypeCursor.readRecord(entry.ID, scratch2);
|
|
if (kind != decls_block::ARCHETYPE_NESTED_TYPES) {
|
|
error();
|
|
break;
|
|
}
|
|
|
|
ArrayRef<uint64_t> rawTypeIDs;
|
|
decls_block::ArchetypeNestedTypesLayout::readRecord(scratch2, rawTypeIDs);
|
|
|
|
SmallVector<std::pair<Identifier, ArchetypeType *>, 4> nestedTypes;
|
|
for_each(rawNameIDs, rawTypeIDs, [&](IdentifierID nameID, TypeID nestedID) {
|
|
auto nestedTy = getType(nestedID)->castTo<ArchetypeType>();
|
|
nestedTypes.push_back(std::make_pair(getIdentifier(nameID), nestedTy));
|
|
});
|
|
archetype->setNestedTypes(ctx, nestedTypes);
|
|
|
|
break;
|
|
}
|
|
|
|
case decls_block::GENERIC_TYPE_PARAM_TYPE: {
|
|
DeclID declID;
|
|
|
|
decls_block::GenericTypeParamTypeLayout::readRecord(scratch, declID);
|
|
|
|
auto genericParam = dyn_cast_or_null<GenericTypeParamDecl>(getDecl(declID));
|
|
if (!genericParam) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
// See if we triggered deserialization through our conformances.
|
|
if (typeOrOffset.isComplete())
|
|
break;
|
|
|
|
typeOrOffset = genericParam->getDeclaredType();
|
|
break;
|
|
}
|
|
|
|
case decls_block::ASSOCIATED_TYPE_TYPE: {
|
|
DeclID declID;
|
|
|
|
decls_block::AssociatedTypeTypeLayout::readRecord(scratch, declID);
|
|
|
|
auto assocType = dyn_cast_or_null<AssociatedTypeDecl>(getDecl(declID));
|
|
if (!assocType) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
// See if we triggered deserialization through our conformances.
|
|
if (typeOrOffset.isComplete())
|
|
break;
|
|
|
|
typeOrOffset = assocType->getDeclaredType();
|
|
break;
|
|
}
|
|
|
|
case decls_block::PROTOCOL_COMPOSITION_TYPE: {
|
|
ArrayRef<uint64_t> rawProtocolIDs;
|
|
|
|
decls_block::ProtocolCompositionTypeLayout::readRecord(scratch,
|
|
rawProtocolIDs);
|
|
SmallVector<Type, 4> protocols;
|
|
for (TypeID protoID : rawProtocolIDs)
|
|
protocols.push_back(getType(protoID));
|
|
|
|
typeOrOffset = ProtocolCompositionType::get(ctx, protocols);
|
|
break;
|
|
}
|
|
|
|
case decls_block::SUBSTITUTED_TYPE: {
|
|
TypeID originalID, replacementID;
|
|
|
|
decls_block::SubstitutedTypeLayout::readRecord(scratch, originalID,
|
|
replacementID);
|
|
typeOrOffset = SubstitutedType::get(getType(originalID),
|
|
getType(replacementID),
|
|
ctx);
|
|
break;
|
|
}
|
|
|
|
case decls_block::BOUND_GENERIC_TYPE: {
|
|
DeclID declID;
|
|
TypeID parentID;
|
|
unsigned numSubstitutions;
|
|
ArrayRef<uint64_t> rawArgumentIDs;
|
|
|
|
decls_block::BoundGenericTypeLayout::readRecord(scratch, declID, parentID,
|
|
numSubstitutions,
|
|
rawArgumentIDs);
|
|
SmallVector<Type, 8> genericArgs;
|
|
for (TypeID type : rawArgumentIDs)
|
|
genericArgs.push_back(getType(type));
|
|
|
|
auto nominal = cast<NominalTypeDecl>(getDecl(declID));
|
|
auto parentTy = getType(parentID);
|
|
|
|
auto boundTy = BoundGenericType::get(nominal, parentTy, genericArgs);
|
|
typeOrOffset = boundTy;
|
|
|
|
// BoundGenericTypes get uniqued in the ASTContext, so it's possible this
|
|
// type already has its substitutions. In that case, ignore the module's.
|
|
if (boundTy->hasSubstitutions())
|
|
break;
|
|
|
|
SmallVector<Substitution, 8> substitutions;
|
|
while (numSubstitutions--) {
|
|
substitutions.push_back(*maybeReadSubstitution());
|
|
}
|
|
boundTy->setSubstitutions(ctx.AllocateCopy(substitutions));
|
|
break;
|
|
}
|
|
|
|
case decls_block::POLYMORPHIC_FUNCTION_TYPE: {
|
|
TypeID inputID;
|
|
TypeID resultID;
|
|
DeclID genericContextID;
|
|
uint8_t rawCallingConvention;
|
|
bool thin;
|
|
bool noreturn = false;
|
|
|
|
//todo add noreturn serialization.
|
|
decls_block::PolymorphicFunctionTypeLayout::readRecord(scratch,
|
|
inputID,
|
|
resultID,
|
|
genericContextID,
|
|
rawCallingConvention,
|
|
thin,
|
|
noreturn);
|
|
auto callingConvention = getActualCC(rawCallingConvention);
|
|
if (!callingConvention.hasValue()) {
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
Decl *genericContext = getDecl(genericContextID);
|
|
assert(genericContext && "loading PolymorphicFunctionType before its decl");
|
|
|
|
GenericParamList *paramList = nullptr;
|
|
switch (genericContext->getKind()) {
|
|
case DeclKind::Constructor:
|
|
paramList = cast<ConstructorDecl>(genericContext)->getGenericParams();
|
|
break;
|
|
case DeclKind::Func:
|
|
paramList = cast<FuncDecl>(genericContext)->getGenericParams();
|
|
break;
|
|
case DeclKind::Class:
|
|
case DeclKind::Struct:
|
|
case DeclKind::Union:
|
|
paramList = cast<NominalTypeDecl>(genericContext)->getGenericParams();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
assert(paramList && "missing generic params for polymorphic function");
|
|
|
|
auto Info = PolymorphicFunctionType::ExtInfo(callingConvention.getValue(),
|
|
thin,
|
|
noreturn);
|
|
|
|
typeOrOffset = PolymorphicFunctionType::get(getType(inputID),
|
|
getType(resultID),
|
|
paramList,
|
|
Info,
|
|
ctx);
|
|
break;
|
|
}
|
|
|
|
case decls_block::ARRAY_SLICE_TYPE: {
|
|
TypeID baseID, implID;
|
|
decls_block::ArraySliceTypeLayout::readRecord(scratch, baseID, implID);
|
|
|
|
auto sliceTy = ArraySliceType::get(getType(baseID), ctx);
|
|
typeOrOffset = sliceTy;
|
|
|
|
// Slice types are uniqued by the ASTContext, so they may already have
|
|
// type information. If so, ignore the information in the module.
|
|
if (!sliceTy->hasImplementationType())
|
|
sliceTy->setImplementationType(getType(implID));
|
|
break;
|
|
}
|
|
|
|
case decls_block::OPTIONAL_TYPE: {
|
|
TypeID baseID, implID;
|
|
decls_block::OptionalTypeLayout::readRecord(scratch, baseID, implID);
|
|
|
|
auto optionalTy = OptionalType::get(getType(baseID), ctx);
|
|
typeOrOffset = optionalTy;
|
|
|
|
// Optional types are uniqued by the ASTContext, so they may already have
|
|
// type information. If so, ignore the information in the module.
|
|
if (!optionalTy->hasImplementationType())
|
|
optionalTy->setImplementationType(getType(implID));
|
|
break;
|
|
}
|
|
|
|
case decls_block::ARRAY_TYPE: {
|
|
TypeID baseID;
|
|
uint64_t size;
|
|
decls_block::ArrayTypeLayout::readRecord(scratch, baseID, size);
|
|
|
|
typeOrOffset = ArrayType::get(getType(baseID), size, ctx);
|
|
break;
|
|
}
|
|
|
|
case decls_block::UNBOUND_GENERIC_TYPE: {
|
|
DeclID genericID;
|
|
TypeID parentID;
|
|
decls_block::UnboundGenericTypeLayout::readRecord(scratch,
|
|
genericID, parentID);
|
|
|
|
auto genericDecl = cast<NominalTypeDecl>(getDecl(genericID));
|
|
typeOrOffset = UnboundGenericType::get(genericDecl, getType(parentID), ctx);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
// We don't know how to deserialize this kind of type.
|
|
error();
|
|
return nullptr;
|
|
}
|
|
|
|
return typeOrOffset;
|
|
}
|