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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- StmtGraphTraits.h - Graph Traits for the class Stmt ------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file defines a template specialization of llvm::GraphTraits to |
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| 10 | // treat ASTs (Stmt*) as graphs |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |||
| 14 | #ifndef LLVM_CLANG_AST_STMTGRAPHTRAITS_H |
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| 15 | #define LLVM_CLANG_AST_STMTGRAPHTRAITS_H |
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| 16 | |||
| 17 | #include "clang/AST/Stmt.h" |
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| 18 | #include "llvm/ADT/DepthFirstIterator.h" |
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| 19 | #include "llvm/ADT/GraphTraits.h" |
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| 20 | |||
| 21 | namespace llvm { |
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| 22 | |||
| 23 | template <> struct GraphTraits<clang::Stmt *> { |
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| 24 | using NodeRef = clang::Stmt *; |
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| 25 | using ChildIteratorType = clang::Stmt::child_iterator; |
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| 26 | using nodes_iterator = llvm::df_iterator<clang::Stmt *>; |
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| 27 | |||
| 28 | static NodeRef getEntryNode(clang::Stmt *S) { return S; } |
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| 29 | |||
| 30 | static ChildIteratorType child_begin(NodeRef N) { |
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| 31 | if (N) return N->child_begin(); |
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| 32 | else return ChildIteratorType(); |
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| 33 | } |
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| 34 | |||
| 35 | static ChildIteratorType child_end(NodeRef N) { |
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| 36 | if (N) return N->child_end(); |
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| 37 | else return ChildIteratorType(); |
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| 38 | } |
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| 39 | |||
| 40 | static nodes_iterator nodes_begin(clang::Stmt* S) { |
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| 41 | return df_begin(S); |
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| 42 | } |
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| 43 | |||
| 44 | static nodes_iterator nodes_end(clang::Stmt* S) { |
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| 45 | return df_end(S); |
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| 46 | } |
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| 47 | }; |
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| 48 | |||
| 49 | template <> struct GraphTraits<const clang::Stmt *> { |
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| 50 | using NodeRef = const clang::Stmt *; |
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| 51 | using ChildIteratorType = clang::Stmt::const_child_iterator; |
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| 52 | using nodes_iterator = llvm::df_iterator<const clang::Stmt *>; |
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| 53 | |||
| 54 | static NodeRef getEntryNode(const clang::Stmt *S) { return S; } |
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| 55 | |||
| 56 | static ChildIteratorType child_begin(NodeRef N) { |
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| 57 | if (N) return N->child_begin(); |
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| 58 | else return ChildIteratorType(); |
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| 59 | } |
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| 60 | |||
| 61 | static ChildIteratorType child_end(NodeRef N) { |
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| 62 | if (N) return N->child_end(); |
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| 63 | else return ChildIteratorType(); |
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| 64 | } |
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| 65 | |||
| 66 | static nodes_iterator nodes_begin(const clang::Stmt* S) { |
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| 67 | return df_begin(S); |
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| 68 | } |
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| 69 | |||
| 70 | static nodes_iterator nodes_end(const clang::Stmt* S) { |
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| 71 | return df_end(S); |
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| 72 | } |
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| 73 | }; |
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| 74 | |||
| 75 | } // namespace llvm |
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| 76 | |||
| 77 | #endif // LLVM_CLANG_AST_STMTGRAPHTRAITS_H |