| //===-- DiffLog.h - Difference Log Builder and accessories ------*- 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 header defines the interface to the LLVM difference log builder. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_TOOLS_LLVM_DIFF_DIFFLOG_H |
| #define LLVM_TOOLS_LLVM_DIFF_DIFFLOG_H |
| |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/ADT/StringRef.h" |
| |
| namespace llvm { |
| class Instruction; |
| class Value; |
| class Consumer; |
| |
| /// Trichotomy assumption |
| enum DiffChange { DC_match, DC_left, DC_right }; |
| |
| /// A temporary-object class for building up log messages. |
| class LogBuilder { |
| Consumer *consumer; |
| |
| /// The use of a stored StringRef here is okay because |
| /// LogBuilder should be used only as a temporary, and as a |
| /// temporary it will be destructed before whatever temporary |
| /// might be initializing this format. |
| StringRef Format; |
| |
| SmallVector<Value*, 4> Arguments; |
| |
| public: |
| LogBuilder(Consumer &c, StringRef Format) : consumer(&c), Format(Format) {} |
| LogBuilder(LogBuilder &&L) |
| : consumer(L.consumer), Format(L.Format), |
| Arguments(std::move(L.Arguments)) { |
| L.consumer = nullptr; |
| } |
| |
| LogBuilder &operator<<(Value *V) { |
| Arguments.push_back(V); |
| return *this; |
| } |
| |
| ~LogBuilder(); |
| |
| StringRef getFormat() const; |
| unsigned getNumArguments() const; |
| Value *getArgument(unsigned I) const; |
| }; |
| |
| /// A temporary-object class for building up diff messages. |
| class DiffLogBuilder { |
| typedef std::pair<Instruction*,Instruction*> DiffRecord; |
| SmallVector<DiffRecord, 20> Diff; |
| |
| Consumer &consumer; |
| |
| public: |
| DiffLogBuilder(Consumer &c) : consumer(c) {} |
| ~DiffLogBuilder(); |
| |
| void addMatch(Instruction *L, Instruction *R); |
| // HACK: VS 2010 has a bug in the stdlib that requires this. |
| void addLeft(Instruction *L); |
| void addRight(Instruction *R); |
| |
| unsigned getNumLines() const; |
| DiffChange getLineKind(unsigned I) const; |
| Instruction *getLeft(unsigned I) const; |
| Instruction *getRight(unsigned I) const; |
| }; |
| |
| } |
| |
| #endif |