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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
//===-- DiffLog.h - Difference Log Builder and accessories ------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This header defines the interface to the LLVM difference log builder.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_DIFF_DIFFLOG_H
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#define LLVM_TOOLS_LLVM_DIFF_DIFFLOG_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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namespace llvm {
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class Instruction;
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class Value;
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class Consumer;
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/// Trichotomy assumption
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enum DiffChange { DC_match, DC_left, DC_right };
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/// A temporary-object class for building up log messages.
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class LogBuilder {
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Consumer *consumer;
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/// The use of a stored StringRef here is okay because
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/// LogBuilder should be used only as a temporary, and as a
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/// temporary it will be destructed before whatever temporary
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/// might be initializing this format.
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StringRef Format;
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SmallVector<Value*, 4> Arguments;
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public:
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LogBuilder(Consumer &c, StringRef Format) : consumer(&c), Format(Format) {}
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LogBuilder(LogBuilder &&L)
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: consumer(L.consumer), Format(L.Format),
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Arguments(std::move(L.Arguments)) {
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L.consumer = nullptr;
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}
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LogBuilder &operator<<(Value *V) {
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Arguments.push_back(V);
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return *this;
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}
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~LogBuilder();
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StringRef getFormat() const;
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unsigned getNumArguments() const;
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Value *getArgument(unsigned I) const;
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};
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/// A temporary-object class for building up diff messages.
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class DiffLogBuilder {
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typedef std::pair<Instruction*,Instruction*> DiffRecord;
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SmallVector<DiffRecord, 20> Diff;
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Consumer &consumer;
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public:
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DiffLogBuilder(Consumer &c) : consumer(c) {}
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~DiffLogBuilder();
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void addMatch(Instruction *L, Instruction *R);
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// HACK: VS 2010 has a bug in the stdlib that requires this.
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void addLeft(Instruction *L);
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void addRight(Instruction *R);
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unsigned getNumLines() const;
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DiffChange getLineKind(unsigned I) const;
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Instruction *getLeft(unsigned I) const;
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Instruction *getRight(unsigned I) const;
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};
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}
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#endif
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