GLSLPreExpandBuffer.hxx

//--------------------------------------------------------------
//
// Microsoft Edge Implementation
// Copyright(c) Microsoft Corporation
// All rights reserved.
//
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files(the ""Software""),
// to deal in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell copies
// of the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions :
//
// The above copyright notice and this permission notice shall be included
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//
// THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//--------------------------------------------------------------

#pragma once

#include "pre.tab.h"

class CGLSLPreParser;
class CGLSLPreMacroDefinition;
class CGLSLPreParamList;

//+-----------------------------------------------------------------------------
//
//  Class:      CGLSLPreExpandBuffer
//
//  Synopsis:   Class that encapsulates a buffer used to store an expanded
//              macro.
//
//------------------------------------------------------------------------------
class CGLSLPreExpandBuffer : public IUnknown
{
public:
    CGLSLPreExpandBuffer();

    const char* GetBufferString() { return _stringBuffer; }

    HRESULT WriteString(__in_z const char *pszString);

protected:
    HRESULT Initialize(
        __in YYLTYPE* pLocation,                    // Location of macro being expanded
        __in CGLSLPreMacroDefinition* pDefinition,  // The definition of the macro being expanded
        __in_opt CGLSLPreParamList *pParamList      // The parameter list to use for expansion
        );

private:
    CMutableString<char> _stringBuffer;             // The buffer we expand into
};