Preprocessor.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_PREPROCESSOR_H_

#define COMPILER_PREPROCESSOR_PREPROCESSOR_H_

#include <cstddef>

#include "GLSLANG/ShaderLang.h"

#include "common/angleutils.h"

namespace angle

namespace pp

class Diagnostics;

class DirectiveHandler;

struct PreprocessorImpl;

struct Token;

struct PreprocessorSettings final

    PreprocessorSettings(ShShaderSpec shaderSpec)

        : maxMacroExpansionDepth(1000), shaderSpec(shaderSpec)

{}

    PreprocessorSettings(const PreprocessorSettings &other) = default;

    int maxMacroExpansionDepth;

    ShShaderSpec shaderSpec;

};

class Preprocessor : angle::NonCopyable

  public:

    Preprocessor(Diagnostics *diagnostics,

                 DirectiveHandler *directiveHandler,

                 const PreprocessorSettings &settings);

    ~Preprocessor();

    // count: specifies the number of elements in the string and length arrays.

    // string: specifies an array of pointers to strings.

    // length: specifies an array of string lengths.

    // If length is NULL, each string is assumed to be null terminated.

    // If length is a value other than NULL, it points to an array containing

    // a string length for each of the corresponding elements of string.

    // Each element in the length array may contain the length of the

    // corresponding string or a value less than 0 to indicate that the string

    // is null terminated.

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

    // Adds a pre-defined macro.

    void predefineMacro(const char *name, int value);

    void lex(Token *token);

    // Set maximum preprocessor token size

    void setMaxTokenSize(size_t maxTokenSize);

  private:

    PreprocessorImpl *mImpl;

};

}  // namespace pp

}  // namespace angle

#endif  // COMPILER_PREPROCESSOR_PREPROCESSOR_H_