1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
| //===- ExternalASTSource.cpp - Abstract External AST Interface ------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file provides the default implementation of the ExternalASTSource
// interface, which enables construction of AST nodes from some external
// source.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/ExternalASTSource.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclarationName.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/Module.h"
#include "llvm/ADT/None.h"
#include "llvm/Support/ErrorHandling.h"
#include <cstdint>
using namespace clang;
ExternalASTSource::~ExternalASTSource() = default;
llvm::Optional<ExternalASTSource::ASTSourceDescriptor>
ExternalASTSource::getSourceDescriptor(unsigned ID) {
return None;
}
ExternalASTSource::ExtKind
ExternalASTSource::hasExternalDefinitions(const Decl *D) {
return EK_ReplyHazy;
}
ExternalASTSource::ASTSourceDescriptor::ASTSourceDescriptor(const Module &M)
: Signature(M.Signature), ClangModule(&M) {
if (M.Directory)
Path = M.Directory->getName();
if (auto *File = M.getASTFile())
ASTFile = File->getName();
}
std::string ExternalASTSource::ASTSourceDescriptor::getModuleName() const {
if (ClangModule)
return ClangModule->Name;
else
return PCHModuleName;
}
void ExternalASTSource::FindFileRegionDecls(FileID File, unsigned Offset,
unsigned Length,
SmallVectorImpl<Decl *> &Decls) {}
void ExternalASTSource::CompleteRedeclChain(const Decl *D) {}
void ExternalASTSource::CompleteType(TagDecl *Tag) {}
void ExternalASTSource::CompleteType(ObjCInterfaceDecl *Class) {}
void ExternalASTSource::ReadComments() {}
void ExternalASTSource::StartedDeserializing() {}
void ExternalASTSource::FinishedDeserializing() {}
void ExternalASTSource::StartTranslationUnit(ASTConsumer *Consumer) {}
void ExternalASTSource::PrintStats() {}
bool ExternalASTSource::layoutRecordType(
const RecordDecl *Record, uint64_t &Size, uint64_t &Alignment,
llvm::DenseMap<const FieldDecl *, uint64_t> &FieldOffsets,
llvm::DenseMap<const CXXRecordDecl *, CharUnits> &BaseOffsets,
llvm::DenseMap<const CXXRecordDecl *, CharUnits> &VirtualBaseOffsets) {
return false;
}
Decl *ExternalASTSource::GetExternalDecl(uint32_t ID) {
return nullptr;
}
Selector ExternalASTSource::GetExternalSelector(uint32_t ID) {
return Selector();
}
uint32_t ExternalASTSource::GetNumExternalSelectors() {
return 0;
}
Stmt *ExternalASTSource::GetExternalDeclStmt(uint64_t Offset) {
return nullptr;
}
CXXCtorInitializer **
ExternalASTSource::GetExternalCXXCtorInitializers(uint64_t Offset) {
return nullptr;
}
CXXBaseSpecifier *
ExternalASTSource::GetExternalCXXBaseSpecifiers(uint64_t Offset) {
return nullptr;
}
bool
ExternalASTSource::FindExternalVisibleDeclsByName(const DeclContext *DC,
DeclarationName Name) {
return false;
}
void ExternalASTSource::completeVisibleDeclsMap(const DeclContext *DC) {}
void ExternalASTSource::FindExternalLexicalDecls(
const DeclContext *DC, llvm::function_ref<bool(Decl::Kind)> IsKindWeWant,
SmallVectorImpl<Decl *> &Result) {}
void ExternalASTSource::getMemoryBufferSizes(MemoryBufferSizes &sizes) const {}
uint32_t ExternalASTSource::incrementGeneration(ASTContext &C) {
uint32_t OldGeneration = CurrentGeneration;
// Make sure the generation of the topmost external source for the context is
// incremented. That might not be us.
auto *P = C.getExternalSource();
if (P && P != this)
CurrentGeneration = P->incrementGeneration(C);
else {
// FIXME: Only bump the generation counter if the current generation number
// has been observed?
if (!++CurrentGeneration)
llvm::report_fatal_error("generation counter overflowed", false);
}
return OldGeneration;
}
|