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//
// Copyright (c) 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_
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