forked from OSchip/llvm-project
110 lines
2.9 KiB
C++
110 lines
2.9 KiB
C++
//===--- ASTVisitor.h - Visitor for an ASTContext ---------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the ASTVisitor interface.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_INDEX_ASTVISITOR_H
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#define LLVM_CLANG_INDEX_ASTVISITOR_H
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#include "clang/AST/DeclVisitor.h"
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#include "clang/AST/StmtVisitor.h"
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namespace clang {
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namespace idx {
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/// \brief Traverses the full AST, both Decls and Stmts.
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template<typename ImplClass>
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class ASTVisitor : public DeclVisitor<ImplClass>,
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public StmtVisitor<ImplClass> {
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public:
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ASTVisitor() : CurrentDecl(0) { }
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Decl *CurrentDecl;
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typedef ASTVisitor<ImplClass> Base;
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typedef DeclVisitor<ImplClass> BaseDeclVisitor;
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typedef StmtVisitor<ImplClass> BaseStmtVisitor;
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using BaseStmtVisitor::Visit;
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//===--------------------------------------------------------------------===//
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// DeclVisitor
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//===--------------------------------------------------------------------===//
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void Visit(Decl *D) {
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Decl *PrevDecl = CurrentDecl;
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CurrentDecl = D;
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BaseDeclVisitor::Visit(D);
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CurrentDecl = PrevDecl;
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}
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void VisitFunctionDecl(FunctionDecl *D) {
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BaseDeclVisitor::VisitValueDecl(D);
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if (D->isThisDeclarationADefinition())
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Visit(D->getBody());
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}
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void VisitObjCMethodDecl(ObjCMethodDecl *D) {
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BaseDeclVisitor::VisitNamedDecl(D);
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if (D->getBody())
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Visit(D->getBody());
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}
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void VisitBlockDecl(BlockDecl *D) {
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BaseDeclVisitor::VisitDecl(D);
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Visit(D->getBody());
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}
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void VisitVarDecl(VarDecl *D) {
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BaseDeclVisitor::VisitValueDecl(D);
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if (Expr *Init = D->getInit())
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Visit(Init);
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}
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void VisitDecl(Decl *D) {
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if (isa<FunctionDecl>(D) || isa<ObjCMethodDecl>(D) || isa<BlockDecl>(D))
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return;
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if (DeclContext *DC = dyn_cast<DeclContext>(D))
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static_cast<ImplClass*>(this)->VisitDeclContext(DC);
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}
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void VisitDeclContext(DeclContext *DC) {
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for (DeclContext::decl_iterator
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I = DC->decls_begin(), E = DC->decls_end(); I != E; ++I)
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Visit(*I);
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}
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//===--------------------------------------------------------------------===//
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// StmtVisitor
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//===--------------------------------------------------------------------===//
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void VisitDeclStmt(DeclStmt *Node) {
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for (DeclStmt::decl_iterator
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I = Node->decl_begin(), E = Node->decl_end(); I != E; ++I)
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Visit(*I);
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}
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void VisitStmt(Stmt *Node) {
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for (Stmt::child_iterator
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I = Node->child_begin(), E = Node->child_end(); I != E; ++I)
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if (*I)
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Visit(*I);
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}
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};
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} // namespace idx
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} // namespace clang
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#endif
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