clang  6.0.0svn
ParentMap.h
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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_AST_PARENTMAP_H
15 #define LLVM_CLANG_AST_PARENTMAP_H
16 
17 namespace clang {
18 class Stmt;
19 class Expr;
20 
21 class ParentMap {
22  void* Impl;
23 public:
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  /// Manually sets the parent of \p S to \p Parent.
33  ///
34  /// If \p S is already in the map, this method will update the mapping.
35  void setParent(const Stmt *S, const Stmt *Parent);
36 
37  Stmt *getParent(Stmt*) const;
41  Stmt *getOuterParenParent(Stmt *) const;
42 
43  const Stmt *getParent(const Stmt* S) const {
44  return getParent(const_cast<Stmt*>(S));
45  }
46 
47  const Stmt *getParentIgnoreParens(const Stmt *S) const {
48  return getParentIgnoreParens(const_cast<Stmt*>(S));
49  }
50 
51  const Stmt *getParentIgnoreParenCasts(const Stmt *S) const {
52  return getParentIgnoreParenCasts(const_cast<Stmt*>(S));
53  }
54 
55  bool hasParent(Stmt* S) const {
56  return getParent(S) != nullptr;
57  }
58 
59  bool isConsumedExpr(Expr *E) const;
60 
61  bool isConsumedExpr(const Expr *E) const {
62  return isConsumedExpr(const_cast<Expr*>(E));
63  }
64 };
65 
66 } // end clang namespace
67 #endif
Stmt - This represents one statement.
Definition: Stmt.h:60
Stmt * getParent(Stmt *) const
Definition: ParentMap.cpp:122
bool isConsumedExpr(Expr *E) const
Definition: ParentMap.cpp:159
const Stmt * getParentIgnoreParens(const Stmt *S) const
Definition: ParentMap.h:47
void addStmt(Stmt *S)
Adds and/or updates the parent/child-relations of the complete stmt tree of S.
Definition: ParentMap.cpp:109
void setParent(const Stmt *S, const Stmt *Parent)
Manually sets the parent of S to Parent.
Definition: ParentMap.cpp:115
NodeId Parent
Definition: ASTDiff.cpp:192
const Stmt * getParentIgnoreParenCasts(const Stmt *S) const
Definition: ParentMap.h:51
Expr - This represents one expression.
Definition: Expr.h:106
bool hasParent(Stmt *S) const
Definition: ParentMap.h:55
const Stmt * getParent(const Stmt *S) const
Definition: ParentMap.h:43
Stmt * getParentIgnoreParens(Stmt *) const
Definition: ParentMap.cpp:128
bool isConsumedExpr(const Expr *E) const
Definition: ParentMap.h:61
Dataflow Directional Tag Classes.
ParentMap(Stmt *ASTRoot)
Definition: ParentMap.cpp:97
Stmt * getParentIgnoreParenImpCasts(Stmt *) const
Definition: ParentMap.cpp:142
Stmt * getParentIgnoreParenCasts(Stmt *) const
Definition: ParentMap.cpp:133
Stmt * getOuterParenParent(Stmt *) const
Definition: ParentMap.cpp:150