IndexDecl.cpp revision e7bbab91f5cc899104d0a1dee6059d8413c70eeb 
1//===- CIndexHigh.cpp - Higher level API functions ------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "IndexingContext.h"
11
12#include "clang/AST/DeclVisitor.h"
13
14using namespace clang;
15using namespace cxindex;
16
17namespace {
18
19class IndexingDeclVisitor : public DeclVisitor<IndexingDeclVisitor, bool> {
20  IndexingContext &IndexCtx;
21
22public:
23  explicit IndexingDeclVisitor(IndexingContext &indexCtx)
24    : IndexCtx(indexCtx) { }
25
26  bool VisitFunctionDecl(FunctionDecl *D) {
27    IndexCtx.handleFunction(D);
28    IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), D);
29    if (D->isThisDeclarationADefinition()) {
30      const Stmt *Body = D->getBody();
31      if (Body) {
32        IndexCtx.indexBody(Body, D);
33      }
34    }
35    return true;
36  }
37
38  bool VisitVarDecl(VarDecl *D) {
39    IndexCtx.handleVar(D);
40    IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), D);
41    return true;
42  }
43
44  bool VisitFieldDecl(FieldDecl *D) {
45    IndexCtx.handleField(D);
46    IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), D);
47    return true;
48  }
49
50  bool VisitEnumConstantDecl(EnumConstantDecl *D) {
51    IndexCtx.handleEnumerator(D);
52    return true;
53  }
54
55  bool VisitTypedefDecl(TypedefDecl *D) {
56    IndexCtx.handleTypedef(D);
57    IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), D);
58    return true;
59  }
60
61  bool VisitTagDecl(TagDecl *D) {
62    // Non-free standing tags are handled in indexTypeSourceInfo.
63    if (D->isFreeStanding())
64      IndexCtx.indexTagDecl(D);
65    return true;
66  }
67
68  bool VisitObjCClassDecl(ObjCClassDecl *D) {
69    IndexCtx.handleObjCClass(D);
70    return true;
71  }
72
73  bool VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
74    ObjCForwardProtocolDecl::protocol_loc_iterator LI = D->protocol_loc_begin();
75    for (ObjCForwardProtocolDecl::protocol_iterator
76           I = D->protocol_begin(), E = D->protocol_end(); I != E; ++I, ++LI) {
77      SourceLocation Loc = *LI;
78      ObjCProtocolDecl *PD = *I;
79
80      bool isRedeclaration = PD->getLocation() != Loc;
81      IndexCtx.handleObjCForwardProtocol(PD, Loc, isRedeclaration);
82    }
83    return true;
84  }
85
86  bool VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
87    // Forward decls are handled at VisitObjCClassDecl.
88    if (D->isForwardDecl())
89      return true;
90
91    IndexCtx.handleObjCInterface(D);
92
93    IndexCtx.indexTUDeclsInObjCContainer();
94    IndexCtx.indexDeclContext(D);
95    return true;
96  }
97
98  bool VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
99    // Forward decls are handled at VisitObjCForwardProtocolDecl.
100    if (D->isForwardDecl())
101      return true;
102
103    IndexCtx.handleObjCProtocol(D);
104
105    IndexCtx.indexTUDeclsInObjCContainer();
106    IndexCtx.indexDeclContext(D);
107    return true;
108  }
109
110  bool VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
111    const ObjCInterfaceDecl *Class = D->getClassInterface();
112    if (Class->isImplicitInterfaceDecl())
113      IndexCtx.handleObjCInterface(Class);
114
115    IndexCtx.handleObjCImplementation(D);
116
117    IndexCtx.indexTUDeclsInObjCContainer();
118    IndexCtx.indexDeclContext(D);
119    return true;
120  }
121
122  bool VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
123    IndexCtx.handleObjCCategory(D);
124
125    IndexCtx.indexTUDeclsInObjCContainer();
126    IndexCtx.indexDeclContext(D);
127    return true;
128  }
129
130  bool VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
131    if (D->getCategoryDecl()->getLocation().isInvalid())
132      return true;
133
134    IndexCtx.handleObjCCategoryImpl(D);
135
136    IndexCtx.indexTUDeclsInObjCContainer();
137    IndexCtx.indexDeclContext(D);
138    return true;
139  }
140
141  bool VisitObjCMethodDecl(ObjCMethodDecl *D) {
142    IndexCtx.handleObjCMethod(D);
143    IndexCtx.indexTypeSourceInfo(D->getResultTypeSourceInfo(), D);
144    for (ObjCMethodDecl::param_iterator
145           I = D->param_begin(), E = D->param_end(); I != E; ++I)
146      IndexCtx.indexTypeSourceInfo((*I)->getTypeSourceInfo(), D);
147
148    if (D->isThisDeclarationADefinition()) {
149      const Stmt *Body = D->getBody();
150      if (Body) {
151        IndexCtx.indexBody(Body, D);
152      }
153    }
154    return true;
155  }
156
157  bool VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
158    IndexCtx.handleObjCProperty(D);
159    IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), D);
160    return true;
161  }
162};
163
164} // anonymous namespace
165
166void IndexingContext::indexDecl(const Decl *D) {
167  bool Handled = IndexingDeclVisitor(*this).Visit(const_cast<Decl*>(D));
168  if (!Handled && isa<DeclContext>(D))
169    indexDeclContext(cast<DeclContext>(D));
170}
171
172void IndexingContext::indexDeclContext(const DeclContext *DC) {
173  for (DeclContext::decl_iterator
174         I = DC->decls_begin(), E = DC->decls_end(); I != E; ++I) {
175    indexDecl(*I);
176  }
177}
178
179void IndexingContext::indexTopLevelDecl(Decl *D) {
180  if (isNotFromSourceFile(D->getLocation()))
181    return;
182
183  if (isa<ObjCMethodDecl>(D))
184    return; // Wait for the objc container.
185
186  indexDecl(D);
187}
188
189void IndexingContext::indexDeclGroupRef(DeclGroupRef DG) {
190  for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I)
191    indexTopLevelDecl(*I);
192}
193
194void IndexingContext::indexTUDeclsInObjCContainer() {
195  for (unsigned i = 0, e = TUDeclsInObjCContainer.size(); i != e; ++i)
196    indexDeclGroupRef(TUDeclsInObjCContainer[i]);
197  TUDeclsInObjCContainer.clear();
198}
199