windows-server-2003/inetsrv/query/sqltext/flexcpp.h

// $Header: /Monarch/src/msidxtr/flexcpp.h 10    8/01/97 2:17p A-charca $

// FlexLexer.h -- define interfaces for lexical analyzer classes generated
//        by flex

// Copyright (c) 1993 The Regents of the University of California.
// All rights reserved.
//
// This code is derived from software contributed to Berkeley by
// Kent Williams and Tom Epperly.
//
// Redistribution and use in source and binary forms are permitted provided
// that: (1) source distributions retain this entire copyright notice and
// comment, and (2) distributions including binaries display the following
// acknowledgement:  ``This product includes software developed by the
// University of California, Berkeley and its contributors'' in the
// documentation or other materials provided with the distribution and in
// all advertising materials mentioning features or use of this software.
// Neither the name of the University nor the names of its contributors may
// be used to endorse or promote products derived from this software without
// specific prior written permission.
// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

// This file defines FlexLexer, an abstract class which specifies the
// external interface provided to flex C++ lexer objects, and YYLEXER,
// which defines a particular lexer class.
//
// If you want to create multiple lexer classes, you use the -P flag
// to rename each YYLEXER to some other xxFlexLexer.  You then
// include <FlexLexer.h> in your other sources once per lexer class:
//
//  #undef YYLEXER
//  #define YYLEXER xxFlexLexer
//  #include <FlexLexer.h>
//
//  #undef YYLEXER
//  #define YYLEXER zzFlexLexer
//  #include <FlexLexer.h>
//  ...

#ifndef __FLEX_LEXER_H
// Never included before - need to define base class.
#define __FLEX_LEXER_H

#ifndef YY_CHAR
#define YY_CHAR TCHAR
#endif

#ifdef UNICODE
# define strdup _wcsdup
# define strlen wcslen
# define atol   _wtol
inline double strtof(wchar_t *s) { char tmp[255]; wcstombs(tmp, s, 255); return atof(tmp); }
#else
# define strdup _strdup
# define strlen strlen
# define atol   atol
# define strtof atof
#endif


// extern "C++" {

struct yy_buffer_state;
typedef int yy_state_type;

class FlexLexer {
public:
//  virtual ~FlexLexer() = 0;

    const YY_CHAR* YYText() { return yytext; }
    int YYLeng()        { return yyleng; }

    virtual void
        yy_switch_to_buffer( struct yy_buffer_state* new_buffer ) = 0;
    virtual struct yy_buffer_state*
        yy_create_buffer( int size ) = 0;
    virtual void yy_delete_buffer( struct yy_buffer_state* b ) = 0;
    virtual void yyrestart( ) = 0;

    virtual int yylex(YYSTYPE *yylval) = 0;

    int lineno() const      { return yylineno; }

    int debug() const       { return yy_flex_debug; }
    void set_debug( int flag )  { yy_flex_debug = flag; }

protected:
    YY_CHAR* yytext;
    int yyleng;
    int yylineno;       // only maintained if you use %option yylineno
    int yy_flex_debug;  // only has effect with -d or "%option debug"
};

// }
#endif

#if defined(YYLEXER) || ! defined(yyFlexLexerOnce)
// Either this is the first time through (yyFlexLexerOnce not defined),
// or this is a repeated include to define a different flavor of
// YYLEXER, as discussed in the flex man page.
#define yyFlexLexerOnce

class YYPARSER; // forward declaration

class YYLEXER : public FlexLexer {
public:
    YYLEXER();
    virtual ~YYLEXER();

    void yy_switch_to_buffer( struct yy_buffer_state* new_buffer );
    struct yy_buffer_state* yy_create_buffer( int size );
    void yy_delete_buffer( struct yy_buffer_state* b );
    void yyrestart( );

    int yylex(YYSTYPE *yylval);

    void yyprimebuffer(YY_CHAR *pszBuffer);
    int yybufferinput(YY_CHAR *pszBuffer, int cMax);

    void yyprimelexer(int eToken);

protected:
    virtual int LexerInput( YY_CHAR* buf, int max_size );
    virtual void LexerOutput( const YY_CHAR* buf, int size );
    virtual void LexerError( const YY_CHAR* msg );
#ifdef DEBUG
    virtual void LexerTrace(const YY_CHAR* buf, int size, int tknNum);
#endif

    void yyunput( int c, YY_CHAR* buf_ptr );
    int yyinput();

    void ResetLexer();
    void CreateTknValue(YYSTYPE *ppqt, short tknNum, YY_CHAR wch = L'\0', BOOL fQuote = FALSE);
    void yy_load_buffer_state();
    void yy_init_buffer( struct yy_buffer_state* b );
    void yy_flush_buffer( struct yy_buffer_state* b );

    int yy_start_stack_ptr;
    int yy_start_stack_depth;
    int* yy_start_stack;

    void yy_push_state( int new_state );
    void yy_pop_state();
    int yy_top_state();

    yy_state_type yy_get_previous_state();
    yy_state_type yy_try_NUL_trans( yy_state_type current_state );
    int yy_get_next_buffer();

    struct yy_buffer_state* yy_current_buffer;

    // yy_hold_char holds the character lost when yytext is formed.
    YY_CHAR yy_hold_char;

    // Number of characters read into yy_ch_buf.
    int yy_n_chars;

    // Points to current character in buffer.
    YY_CHAR* yy_c_buf_p;
    YY_CHAR *pCurBuffer, *pszInputBuffer;
    int cInputBuffer;

    int yy_init;        // whether we need to initialize
    int yy_start;       // start state number
    int yyprimetoken;   // priming token

    // Flag which is used to allow yywrap()'s to do buffer switches
    // instead of setting up a fresh yyin.  A bit of a hack ...
    int yy_did_buffer_switch_on_eof;

    // The following are not always needed, but may be depending
    // on use of certain flex features (like REJECT or yymore()).

    yy_state_type yy_last_accepting_state;
    YY_CHAR* yy_last_accepting_cpos;

    yy_state_type* yy_state_buf;
    yy_state_type* yy_state_ptr;

    YY_CHAR* yy_full_match;
    int* yy_full_state;
    int yy_full_lp;

    int yy_lp;
    int yy_looking_for_trail_begin;

    int yy_more_flag;
    int yy_more_len;
    int yy_more_offset;
    int yy_prev_more_offset;
#ifdef DEBUG
    int tkndebug;
#endif
};

#endif