//%LICENSE////////////////////////////////////////////////////////////////
// 
// Licensed to The Open Group (TOG) under one or more contributor license
// agreements.  Refer to the OpenPegasusNOTICE.txt file distributed with
// this work for additional information regarding copyright ownership.
// Each contributor licenses this file to you under the OpenPegasus Open
// Source License; you may not use this file except in compliance with the
// 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
// in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// 
//////////////////////////////////////////////////////////////////////////
//
// Author: Mike Brasher (mbrasher@bmc.com)
//
// Modified By:
//
//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_WQLParserState_h
#define Pegasus_WQLParserState_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/ArrayInternal.h>
#include <Pegasus/WQL/WQLSelectStatement.h>

PEGASUS_NAMESPACE_BEGIN

/** This is an internal structure used for holding parser state information
    during parsing (while inside the WQLParser::parse() method). Instances
    of this class are created and destroyed by WQLParser::parse().
*/
struct WQLParserState
{
    //
    // Text containing SELECT statement (must be null-terminated).
    //

    const char* text;

    //
    // Size in bytes (including null terminator) of the text.
    //

    Uint32 textSize;

    //
    // Offset to current parser position in the above text.
    //

    Uint32 offset;

    //
    // The output object being initialized during parsing. This object is
    // set to point to the statement argument passed to the WQLParser::parse()
    // method.
    //

    WQLSelectStatement* statement;

    //
    // Set to true when there is an error (set by WQL_error()).
    //

    Boolean error;

    //
    // Error message if any (set by WQL_error()).
    //

    String errorMessage;

    //
    // A list of strings created by lexer. These are deleted by the
    // WQLParser when cleaning up in the parse() method. It is not possible
    // to reliably clean them up anywhere else due to potential parse errors
    // which prevent YACC actions (which might attempt to free them) from
    // being reached. These strings are outstanding in the sense that they
    // need to be cleaned up (not in the sense that they are excellent examples
    // of strings).
    //

    Array<char*> outstandingStrings;
};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_WQLParserState_h */