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