|
150
|
1 //===- ExternalASTSource.cpp - Abstract External AST Interface ------------===//
|
|
|
2 //
|
|
|
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
|
4 // See https://llvm.org/LICENSE.txt for license information.
|
|
|
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
|
6 //
|
|
|
7 //===----------------------------------------------------------------------===//
|
|
|
8 //
|
|
|
9 // This file provides the default implementation of the ExternalASTSource
|
|
|
10 // interface, which enables construction of AST nodes from some external
|
|
|
11 // source.
|
|
|
12 //
|
|
|
13 //===----------------------------------------------------------------------===//
|
|
|
14
|
|
|
15 #include "clang/AST/ExternalASTSource.h"
|
|
|
16 #include "clang/AST/ASTContext.h"
|
|
|
17 #include "clang/AST/DeclarationName.h"
|
|
173
|
18 #include "clang/Basic/FileManager.h"
|
|
150
|
19 #include "clang/Basic/IdentifierTable.h"
|
|
|
20 #include "clang/Basic/LLVM.h"
|
|
|
21 #include "clang/Basic/Module.h"
|
|
173
|
22 #include "clang/Basic/SourceManager.h"
|
|
150
|
23 #include "llvm/ADT/None.h"
|
|
|
24 #include "llvm/Support/ErrorHandling.h"
|
|
|
25 #include <cstdint>
|
|
|
26
|
|
|
27 using namespace clang;
|
|
|
28
|
|
|
29 char ExternalASTSource::ID;
|
|
|
30
|
|
|
31 ExternalASTSource::~ExternalASTSource() = default;
|
|
|
32
|
|
173
|
33 llvm::Optional<ASTSourceDescriptor>
|
|
150
|
34 ExternalASTSource::getSourceDescriptor(unsigned ID) {
|
|
|
35 return None;
|
|
|
36 }
|
|
|
37
|
|
|
38 ExternalASTSource::ExtKind
|
|
|
39 ExternalASTSource::hasExternalDefinitions(const Decl *D) {
|
|
|
40 return EK_ReplyHazy;
|
|
|
41 }
|
|
|
42
|
|
|
43 void ExternalASTSource::FindFileRegionDecls(FileID File, unsigned Offset,
|
|
|
44 unsigned Length,
|
|
|
45 SmallVectorImpl<Decl *> &Decls) {}
|
|
|
46
|
|
|
47 void ExternalASTSource::CompleteRedeclChain(const Decl *D) {}
|
|
|
48
|
|
|
49 void ExternalASTSource::CompleteType(TagDecl *Tag) {}
|
|
|
50
|
|
|
51 void ExternalASTSource::CompleteType(ObjCInterfaceDecl *Class) {}
|
|
|
52
|
|
|
53 void ExternalASTSource::ReadComments() {}
|
|
|
54
|
|
|
55 void ExternalASTSource::StartedDeserializing() {}
|
|
|
56
|
|
|
57 void ExternalASTSource::FinishedDeserializing() {}
|
|
|
58
|
|
|
59 void ExternalASTSource::StartTranslationUnit(ASTConsumer *Consumer) {}
|
|
|
60
|
|
|
61 void ExternalASTSource::PrintStats() {}
|
|
|
62
|
|
|
63 bool ExternalASTSource::layoutRecordType(
|
|
|
64 const RecordDecl *Record, uint64_t &Size, uint64_t &Alignment,
|
|
|
65 llvm::DenseMap<const FieldDecl *, uint64_t> &FieldOffsets,
|
|
|
66 llvm::DenseMap<const CXXRecordDecl *, CharUnits> &BaseOffsets,
|
|
|
67 llvm::DenseMap<const CXXRecordDecl *, CharUnits> &VirtualBaseOffsets) {
|
|
|
68 return false;
|
|
|
69 }
|
|
|
70
|
|
|
71 Decl *ExternalASTSource::GetExternalDecl(uint32_t ID) {
|
|
|
72 return nullptr;
|
|
|
73 }
|
|
|
74
|
|
|
75 Selector ExternalASTSource::GetExternalSelector(uint32_t ID) {
|
|
|
76 return Selector();
|
|
|
77 }
|
|
|
78
|
|
|
79 uint32_t ExternalASTSource::GetNumExternalSelectors() {
|
|
|
80 return 0;
|
|
|
81 }
|
|
|
82
|
|
|
83 Stmt *ExternalASTSource::GetExternalDeclStmt(uint64_t Offset) {
|
|
|
84 return nullptr;
|
|
|
85 }
|
|
|
86
|
|
|
87 CXXCtorInitializer **
|
|
|
88 ExternalASTSource::GetExternalCXXCtorInitializers(uint64_t Offset) {
|
|
|
89 return nullptr;
|
|
|
90 }
|
|
|
91
|
|
|
92 CXXBaseSpecifier *
|
|
|
93 ExternalASTSource::GetExternalCXXBaseSpecifiers(uint64_t Offset) {
|
|
|
94 return nullptr;
|
|
|
95 }
|
|
|
96
|
|
|
97 bool
|
|
|
98 ExternalASTSource::FindExternalVisibleDeclsByName(const DeclContext *DC,
|
|
|
99 DeclarationName Name) {
|
|
|
100 return false;
|
|
|
101 }
|
|
|
102
|
|
|
103 void ExternalASTSource::completeVisibleDeclsMap(const DeclContext *DC) {}
|
|
|
104
|
|
|
105 void ExternalASTSource::FindExternalLexicalDecls(
|
|
|
106 const DeclContext *DC, llvm::function_ref<bool(Decl::Kind)> IsKindWeWant,
|
|
|
107 SmallVectorImpl<Decl *> &Result) {}
|
|
|
108
|
|
|
109 void ExternalASTSource::getMemoryBufferSizes(MemoryBufferSizes &sizes) const {}
|
|
|
110
|
|
|
111 uint32_t ExternalASTSource::incrementGeneration(ASTContext &C) {
|
|
|
112 uint32_t OldGeneration = CurrentGeneration;
|
|
|
113
|
|
|
114 // Make sure the generation of the topmost external source for the context is
|
|
|
115 // incremented. That might not be us.
|
|
|
116 auto *P = C.getExternalSource();
|
|
|
117 if (P && P != this)
|
|
|
118 CurrentGeneration = P->incrementGeneration(C);
|
|
|
119 else {
|
|
|
120 // FIXME: Only bump the generation counter if the current generation number
|
|
|
121 // has been observed?
|
|
|
122 if (!++CurrentGeneration)
|
|
|
123 llvm::report_fatal_error("generation counter overflowed", false);
|
|
|
124 }
|
|
|
125
|
|
|
126 return OldGeneration;
|
|
|
127 }
|
