Input.h - mozsearch

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//

// Copyright 2011 The ANGLE Project Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

//

#ifndef COMPILER_PREPROCESSOR_INPUT_H_

#define COMPILER_PREPROCESSOR_INPUT_H_

#include <cstddef>

#include <vector>

namespace angle

namespace pp

// Holds and reads input for Lexer.

class Input

  public:

    Input();

    ~Input();

    Input(size_t count, const char *const string[], const int length[]);

    size_t count() const { return mCount; }

    const char *string(size_t index) const { return mString[index]; }

    size_t length(size_t index) const { return mLength[index]; }

    size_t read(char *buf, size_t maxSize, int *lineNo);

    struct Location

        size_t sIndex;  // String index;

        size_t cIndex;  // Char index.

        Location() : sIndex(0), cIndex(0) {}

};

    const Location &readLoc() const { return mReadLoc; }

  private:

    // Skip a character and return the next character after the one that was skipped.

    // Return nullptr if data runs out.

    const char *skipChar();

    // Input.

    size_t mCount;

    const char *const *mString;

    std::vector<size_t> mLength;

    Location mReadLoc;

};

}  // namespace pp

}  // namespace angle

#endif  // COMPILER_PREPROCESSOR_INPUT_H_