| //===- ASTDiffInternal.h --------------------------------------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_TOOLING_ASTDIFF_ASTDIFFINTERNAL_H |
| #define LLVM_CLANG_TOOLING_ASTDIFF_ASTDIFFINTERNAL_H |
| |
| #include "clang/AST/ASTTypeTraits.h" |
| |
| namespace clang { |
| namespace diff { |
| |
| using DynTypedNode = DynTypedNode; |
| |
| class SyntaxTree; |
| class SyntaxTreeImpl; |
| struct ComparisonOptions; |
| |
| /// Within a tree, this identifies a node by its preorder offset. |
| struct NodeId { |
| private: |
| static constexpr int InvalidNodeId = -1; |
| |
| public: |
| int Id; |
| |
| NodeId() : Id(InvalidNodeId) {} |
| NodeId(int Id) : Id(Id) {} |
| |
| operator int() const { return Id; } |
| NodeId &operator++() { return ++Id, *this; } |
| NodeId &operator--() { return --Id, *this; } |
| // Support defining iterators on NodeId. |
| NodeId &operator*() { return *this; } |
| |
| bool isValid() const { return Id != InvalidNodeId; } |
| bool isInvalid() const { return Id == InvalidNodeId; } |
| }; |
| |
| } // end namespace diff |
| } // end namespace clang |
| #endif |