Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- Strings.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 LLD_STRINGS_H

#define LLD_STRINGS_H

#include "llvm/ADT/ArrayRef.h"

#include "llvm/ADT/SmallVector.h"

#include "llvm/ADT/StringRef.h"

#include "llvm/Support/GlobPattern.h"

#include <string>

#include <vector>

namespace lld {

llvm::SmallVector<uint8_t, 0> parseHex(llvm::StringRef s);

bool isValidCIdentifier(llvm::StringRef s);

// Write the contents of the a buffer to a file

void saveBuffer(llvm::StringRef buffer, const llvm::Twine &path);

// A single pattern to match against. A pattern can either be double-quoted

// text that should be matched exactly after removing the quoting marks or a

// glob pattern in the sense of GlobPattern.

class SingleStringMatcher {

public:

  // Create a StringPattern from Pattern to be matched exactly regardless

  // of globbing characters if ExactMatch is true.

  SingleStringMatcher(llvm::StringRef Pattern);

  // Match s against this pattern, exactly if ExactMatch is true.

  bool match(llvm::StringRef s) const;

  // Returns true for pattern "*" which will match all inputs.

  bool isTrivialMatchAll() const {

    return !ExactMatch && GlobPatternMatcher.isTrivialMatchAll();

  }

private:

  // Whether to do an exact match regardless of wildcard characters.

  bool ExactMatch;

  // GlobPattern object if not doing an exact match.

  llvm::GlobPattern GlobPatternMatcher;

  // StringRef to match exactly if doing an exact match.

  llvm::StringRef ExactPattern;

};

// This class represents multiple patterns to match against. A pattern can

// either be a double-quoted text that should be matched exactly after removing

// the quoted marks or a glob pattern.

class StringMatcher {

private:

  // Patterns to match against.

  std::vector<SingleStringMatcher> patterns;

public:

  StringMatcher() = default;

  // Matcher for a single pattern.

  StringMatcher(llvm::StringRef Pattern)

      : patterns({SingleStringMatcher(Pattern)}) {}

  // Add a new pattern to the existing ones to match against.

  void addPattern(SingleStringMatcher Matcher) { patterns.push_back(Matcher); }

  bool empty() const { return patterns.empty(); }

  // Match s against the patterns.

  bool match(llvm::StringRef s) const;

};

} // namespace lld

#endif