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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
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
//===- StringMatcher.h - Generate a matcher for input strings ---*- 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 file implements the StringMatcher class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TABLEGEN_STRINGMATCHER_H
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#define LLVM_TABLEGEN_STRINGMATCHER_H
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#include "llvm/ADT/StringRef.h"
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#include <string>
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#include <utility>
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#include <vector>
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namespace llvm {
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class raw_ostream;
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/// Given a list of strings and code to execute when they match, output a
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/// simple switch tree to classify the input string.
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///
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/// If a match is found, the code in Matches[i].second is executed; control must
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/// not exit this code fragment. If nothing matches, execution falls through.
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class StringMatcher {
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public:
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using StringPair = std::pair<std::string, std::string>;
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private:
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StringRef StrVariableName;
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const std::vector<StringPair> &Matches;
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raw_ostream &OS;
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public:
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StringMatcher(StringRef strVariableName,
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const std::vector<StringPair> &matches, raw_ostream &os)
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: StrVariableName(strVariableName), Matches(matches), OS(os) {}
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void Emit(unsigned Indent = 0, bool IgnoreDuplicates = false) const;
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private:
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bool EmitStringMatcherForChar(const std::vector<const StringPair *> &Matches,
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unsigned CharNo, unsigned IndentCount,
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bool IgnoreDuplicates) const;
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};
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} // end namespace llvm
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#endif // LLVM_TABLEGEN_STRINGMATCHER_H
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