File indexing completed on 2024-04-28 04:36:05

 
 // -*-C++-*-
 // 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, with or without
 //  modification, are permitted provided that the following conditions
 //  are met:
 
 //  1. Redistributions of source code must retain the above copyright
 //  notice, this list of conditions and the following disclaimer.
 //  2. Redistributions in binary form must reproduce the above copyright
 //  notice, this list of conditions and the following disclaimer in the
 //  documentation and/or other materials provided with the distribution.
 
 //  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 yyFlexLexer,
 // which defines a particular lexer class.
 //
 // If you want to create multiple lexer classes, you use the -P flag
 // to rename each yyFlexLexer to some other xxFlexLexer.  You then
 // include <FlexLexer.h> in your other sources once per lexer class:
 //
 //  #undef yyFlexLexer
 //  #define yyFlexLexer xxFlexLexer
 //  #include <FlexLexer.h>
 //
 //  #undef yyFlexLexer
 //  #define yyFlexLexer zzFlexLexer
 //  #include <FlexLexer.h>
 //  ...
 
 #ifndef __FLEX_LEXER_H
 // Never included before - need to define base class.
 #define __FLEX_LEXER_H
 
 #include <iostream>
 #  ifndef FLEX_STD
 #    define FLEX_STD std::
 #  endif
 
 extern "C++" {
 
 struct yy_buffer_state;
 typedef int yy_state_type;
 
 class FlexLexer {
 public:
     virtual ~FlexLexer()    { }
 
     const char* YYText() const  { return yytext; }
     int YYLeng()    const   { return yyleng; }
 
     virtual void
         yy_switch_to_buffer( struct yy_buffer_state* new_buffer ) = 0;
     virtual struct yy_buffer_state*
         yy_create_buffer( FLEX_STD istream* s, int size ) = 0;
     virtual void yy_delete_buffer( struct yy_buffer_state* b ) = 0;
     virtual void yyrestart( FLEX_STD istream* s ) = 0;
 
     virtual int yylex() = 0;
 
     // Call yylex with new input/output sources.
     int yylex( FLEX_STD istream* new_in, FLEX_STD ostream* new_out = 0 )
         {
         switch_streams( new_in, new_out );
         return yylex();
         }
 
     // Switch to new input/output streams.  A nil stream pointer
     // indicates "keep the current one".
     virtual void switch_streams( FLEX_STD istream* new_in = 0,
                     FLEX_STD ostream* new_out = 0 ) = 0;
 
     int lineno() const      { return yylineno; }
 
     int debug() const       { return yy_flex_debug; }
     void set_debug( int flag )  { yy_flex_debug = flag; }
 
 protected:
     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(yyFlexLexer) || ! defined(yyFlexLexerOnce)
 // Either this is the first time through (yyFlexLexerOnce not defined),
 // or this is a repeated include to define a different flavor of
 // yyFlexLexer, as discussed in the flex man page.
 #define yyFlexLexerOnce
 
 extern "C++" {
 
 class yyFlexLexer : public FlexLexer {
 public:
     // arg_yyin and arg_yyout default to the cin and cout, but we
     // only make that assignment when initializing in yylex().
     yyFlexLexer( FLEX_STD istream* arg_yyin = 0, FLEX_STD ostream* arg_yyout = 0 );
 
     virtual ~yyFlexLexer();
 
     void yy_switch_to_buffer( struct yy_buffer_state* new_buffer );
     struct yy_buffer_state* yy_create_buffer( FLEX_STD istream* s, int size );
     void yy_delete_buffer( struct yy_buffer_state* b );
     void yyrestart( FLEX_STD istream* s );
 
     void yypush_buffer_state( struct yy_buffer_state* new_buffer );
     void yypop_buffer_state(void);
 
 #ifndef yywrap
     int yywrap();
 #endif
     virtual int yylex();
     virtual void switch_streams( FLEX_STD istream* new_in, FLEX_STD ostream* new_out );
 
 protected:
     virtual int LexerInput( char* buf, int max_size );
     virtual void LexerOutput( const char* buf, int size );
     virtual void LexerError( const char* msg );
 
     void yyunput( int c, char* buf_ptr );
     int yyinput();
 
     void yy_load_buffer_state();
     void yy_init_buffer( struct yy_buffer_state* b, FLEX_STD istream* s );
     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();
 
     FLEX_STD istream* yyin; // input source for default LexerInput
     FLEX_STD ostream* yyout;    // output sink for default LexerOutput
 
     // yy_hold_char holds the character lost when yytext is formed.
     char yy_hold_char;
 
     // Number of characters read into yy_ch_buf.
     int yy_n_chars;
 
     // Points to current character in buffer.
     char* yy_c_buf_p;
 
     int yy_init;        // whether we need to initialize
     int yy_start;       // start state number
 
     // 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;
 
 
     size_t yy_buffer_stack_top; /**< index of top of stack. */
     size_t yy_buffer_stack_max; /**< capacity of stack. */
     struct yy_buffer_state ** yy_buffer_stack; /**< Stack as an array. */
     void yyensure_buffer_stack(void);
 
     // 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;
     char* yy_last_accepting_cpos;
 
     yy_state_type* yy_state_buf;
     yy_state_type* yy_state_ptr;
 
     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;
 };
 
 }
 
 #endif