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//===- StmtGraphTraits.h - Graph Traits for the class Stmt ------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines a template specialization of llvm::GraphTraits to
// treat ASTs (Stmt*) as graphs
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_STMTGRAPHTRAITS_H
#define LLVM_CLANG_AST_STMTGRAPHTRAITS_H
#include "clang/AST/Stmt.h"
#include "llvm/ADT/DepthFirstIterator.h"
#include "llvm/ADT/GraphTraits.h"
namespace llvm {
template <> struct GraphTraits<clang::Stmt *> {
using NodeRef = clang::Stmt *;
using ChildIteratorType = clang::Stmt::child_iterator;
using nodes_iterator = llvm::df_iterator<clang::Stmt *>;
static NodeRef getEntryNode(clang::Stmt *S) { return S; }
static ChildIteratorType child_begin(NodeRef N) {
if (N) return N->child_begin();
else return ChildIteratorType();
}
static ChildIteratorType child_end(NodeRef N) {
if (N) return N->child_end();
else return ChildIteratorType();
}
static nodes_iterator nodes_begin(clang::Stmt* S) {
return df_begin(S);
}
static nodes_iterator nodes_end(clang::Stmt* S) {
return df_end(S);
}
};
template <> struct GraphTraits<const clang::Stmt *> {
using NodeRef = const clang::Stmt *;
using ChildIteratorType = clang::Stmt::const_child_iterator;
using nodes_iterator = llvm::df_iterator<const clang::Stmt *>;
static NodeRef getEntryNode(const clang::Stmt *S) { return S; }
static ChildIteratorType child_begin(NodeRef N) {
if (N) return N->child_begin();
else return ChildIteratorType();
}
static ChildIteratorType child_end(NodeRef N) {
if (N) return N->child_end();
else return ChildIteratorType();
}
static nodes_iterator nodes_begin(const clang::Stmt* S) {
return df_begin(S);
}
static nodes_iterator nodes_end(const clang::Stmt* S) {
return df_end(S);
}
};
} // namespace llvm
#endif // LLVM_CLANG_AST_STMTGRAPHTRAITS_H
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