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Diffstat (limited to 'FlexLexer.h')
-rw-r--r-- | FlexLexer.h | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/FlexLexer.h b/FlexLexer.h deleted file mode 100644 index bad4ce0..0000000 --- a/FlexLexer.h +++ /dev/null @@ -1,206 +0,0 @@ -// -*-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 // FLEXLEXER_H - -#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 manual. -#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(); - - virtual int yylex(); - virtual void switch_streams( FLEX_STD istream* new_in, FLEX_STD ostream* new_out = 0 ); - virtual int yywrap(); - -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 // yyFlexLexer || ! yyFlexLexerOnce - |