1//===--- ParentMap.h - Mappings from Stmts to their Parents -----*- C++ -*-===//
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//  This file defines the ParentMap class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_CLANG_PARENTMAP_H
15#define LLVM_CLANG_PARENTMAP_H
16
17namespace clang {
18class Stmt;
19class Expr;
20
21class ParentMap {
22  void* Impl;
23public:
24  ParentMap(Stmt* ASTRoot);
25  ~ParentMap();
26
27  /// \brief Adds and/or updates the parent/child-relations of the complete
28  /// stmt tree of S. All children of S including indirect descendants are
29  /// visited and updated or inserted but not the parents of S.
30  void addStmt(Stmt* S);
31
32  Stmt *getParent(Stmt*) const;
33  Stmt *getParentIgnoreParens(Stmt *) const;
34  Stmt *getParentIgnoreParenCasts(Stmt *) const;
35  Stmt *getParentIgnoreParenImpCasts(Stmt *) const;
36  Stmt *getOuterParenParent(Stmt *) const;
37
38  const Stmt *getParent(const Stmt* S) const {
39    return getParent(const_cast<Stmt*>(S));
40  }
41
42  const Stmt *getParentIgnoreParens(const Stmt *S) const {
43    return getParentIgnoreParens(const_cast<Stmt*>(S));
44  }
45
46  const Stmt *getParentIgnoreParenCasts(const Stmt *S) const {
47    return getParentIgnoreParenCasts(const_cast<Stmt*>(S));
48  }
49
50  bool hasParent(Stmt* S) const {
51    return getParent(S) != 0;
52  }
53
54  bool isConsumedExpr(Expr *E) const;
55
56  bool isConsumedExpr(const Expr *E) const {
57    return isConsumedExpr(const_cast<Expr*>(E));
58  }
59};
60
61} // end clang namespace
62#endif
63