Deleted Added
sdiff udiff text old ( 2258 ) new ( 16514 )
full compact
FlexLexer.h (2258) FlexLexer.h (16514)
1// $Header: FlexLexer.h,v 1.2 94/01/04 14:57:26 vern Exp $
1// $Header: /home/daffy/u0/vern/flex/RCS/FlexLexer.h,v 1.19 96/05/25 20:43:02 vern Exp $
2
2
3// FlexLexer.h -- define classes for lexical analyzers generated by flex
3// FlexLexer.h -- define interfaces for lexical analyzer classes generated
4// by flex
4
5// Copyright (c) 1993 The Regents of the University of California.
6// All rights reserved.
7//
8// This code is derived from software contributed to Berkeley by
9// Kent Williams and Tom Epperly.
10//
11// Redistribution and use in source and binary forms are permitted provided

--- 5 unchanged lines hidden (view full) ---

17// all advertising materials mentioning features or use of this software.
18// Neither the name of the University nor the names of its contributors may
19// be used to endorse or promote products derived from this software without
20// specific prior written permission.
21// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
22// WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
23// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
24
5
6// Copyright (c) 1993 The Regents of the University of California.
7// All rights reserved.
8//
9// This code is derived from software contributed to Berkeley by
10// Kent Williams and Tom Epperly.
11//
12// Redistribution and use in source and binary forms are permitted provided

--- 5 unchanged lines hidden (view full) ---

18// all advertising materials mentioning features or use of this software.
19// Neither the name of the University nor the names of its contributors may
20// be used to endorse or promote products derived from this software without
21// specific prior written permission.
22// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
23// WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
24// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
25
25#ifndef __FLEX_LEXER_H
26#define __FLEX_LEXER_H
27
28
29// This file defines two classes. The first, FlexLexer, is an abstract
30// class which specifies the external interface provided to flex C++
31// lexer objects. The second, yyFlexLexer, fills out most of the meat
32// of the lexer class; its internals may vary from lexer to lexer
33// depending on things like whether REJECT is used.
26// This file defines FlexLexer, an abstract class which specifies the
27// external interface provided to flex C++ lexer objects, and yyFlexLexer,
28// which defines a particular lexer class.
34//
35// If you want to create multiple lexer classes, you use the -P flag
29//
30// If you want to create multiple lexer classes, you use the -P flag
36// to rename each yyFlexLexer to some other xxFlexLexer.
31// to rename each yyFlexLexer to some other xxFlexLexer. You then
32// include <FlexLexer.h> in your other sources once per lexer class:
33//
34// #undef yyFlexLexer
35// #define yyFlexLexer xxFlexLexer
36// #include <FlexLexer.h>
37//
38// #undef yyFlexLexer
39// #define yyFlexLexer zzFlexLexer
40// #include <FlexLexer.h>
41// ...
37
42
43#ifndef __FLEX_LEXER_H
44// Never included before - need to define base class.
45#define __FLEX_LEXER_H
38#include <iostream.h>
39
40extern "C++" {
41
42struct yy_buffer_state;
43typedef int yy_state_type;
44
45class FlexLexer {

--- 7 unchanged lines hidden (view full) ---

53 yy_switch_to_buffer( struct yy_buffer_state* new_buffer ) = 0;
54 virtual struct yy_buffer_state*
55 yy_create_buffer( istream* s, int size ) = 0;
56 virtual void yy_delete_buffer( struct yy_buffer_state* b ) = 0;
57 virtual void yyrestart( istream* s ) = 0;
58
59 virtual int yylex() = 0;
60
46#include <iostream.h>
47
48extern "C++" {
49
50struct yy_buffer_state;
51typedef int yy_state_type;
52
53class FlexLexer {

--- 7 unchanged lines hidden (view full) ---

61 yy_switch_to_buffer( struct yy_buffer_state* new_buffer ) = 0;
62 virtual struct yy_buffer_state*
63 yy_create_buffer( istream* s, int size ) = 0;
64 virtual void yy_delete_buffer( struct yy_buffer_state* b ) = 0;
65 virtual void yyrestart( istream* s ) = 0;
66
67 virtual int yylex() = 0;
68
69 // Call yylex with new input/output sources.
70 int yylex( istream* new_in, ostream* new_out = 0 )
71 {
72 switch_streams( new_in, new_out );
73 return yylex();
74 }
75
76 // Switch to new input/output streams. A nil stream pointer
77 // indicates "keep the current one".
78 virtual void switch_streams( istream* new_in = 0,
79 ostream* new_out = 0 ) = 0;
80
81 int lineno() const { return yylineno; }
82
83 int debug() const { return yy_flex_debug; }
84 void set_debug( int flag ) { yy_flex_debug = flag; }
85
61protected:
62 char* yytext;
63 int yyleng;
86protected:
87 char* yytext;
88 int yyleng;
89 int yylineno; // only maintained if you use %option yylineno
90 int yy_flex_debug; // only has effect with -d or "%option debug"
64};
65
91};
92
93}
94#endif
66
95
96#if defined(yyFlexLexer) || ! defined(yyFlexLexerOnce)
97// Either this is the first time through (yyFlexLexerOnce not defined),
98// or this is a repeated include to define a different flavor of
99// yyFlexLexer, as discussed in the flex man page.
100#define yyFlexLexerOnce
101
67class yyFlexLexer : public FlexLexer {
68public:
69 // arg_yyin and arg_yyout default to the cin and cout, but we
70 // only make that assignment when initializing in yylex().
102class yyFlexLexer : public FlexLexer {
103public:
104 // arg_yyin and arg_yyout default to the cin and cout, but we
105 // only make that assignment when initializing in yylex().
71 yyFlexLexer( istream* arg_yyin = 0, ostream* arg_yyout = 0 )
72 {
73 yyin = arg_yyin;
74 yyout = arg_yyout;
75 yy_c_buf_p = 0;
76 yy_init = 1;
77 yy_start = 0;
106 yyFlexLexer( istream* arg_yyin = 0, ostream* arg_yyout = 0 );
78
107
79 yy_did_buffer_switch_on_eof = 0;
108 virtual ~yyFlexLexer();
80
109
81 yy_looking_for_trail_begin = 0;
82 yy_more_flag = 0;
83 yy_more_len = 0;
84
85 yy_start_stack_ptr = yy_start_stack_depth = 0;
86 yy_start_stack = 0;
87
88 yy_current_buffer = 0;
89
90#ifdef YY_USES_REJECT
91 yy_state_buf = new yy_state_type[YY_BUF_SIZE + 2];
92#else
93 yy_state_buf = 0;
94#endif
95 }
96
97 virtual ~yyFlexLexer()
98 {
99 delete yy_state_buf;
100 }
101
102 void yy_switch_to_buffer( struct yy_buffer_state* new_buffer );
103 struct yy_buffer_state* yy_create_buffer( istream* s, int size );
104 void yy_delete_buffer( struct yy_buffer_state* b );
105 void yyrestart( istream* s );
106
107 virtual int yylex();
110 void yy_switch_to_buffer( struct yy_buffer_state* new_buffer );
111 struct yy_buffer_state* yy_create_buffer( istream* s, int size );
112 void yy_delete_buffer( struct yy_buffer_state* b );
113 void yyrestart( istream* s );
114
115 virtual int yylex();
116 virtual void switch_streams( istream* new_in, ostream* new_out );
108
109protected:
110 virtual int LexerInput( char* buf, int max_size );
111 virtual void LexerOutput( const char* buf, int size );
112 virtual void LexerError( const char* msg );
113
114 void yyunput( int c, char* buf_ptr );
115 int yyinput();
116
117 void yy_load_buffer_state();
118 void yy_init_buffer( struct yy_buffer_state* b, istream* s );
117
118protected:
119 virtual int LexerInput( char* buf, int max_size );
120 virtual void LexerOutput( const char* buf, int size );
121 virtual void LexerError( const char* msg );
122
123 void yyunput( int c, char* buf_ptr );
124 int yyinput();
125
126 void yy_load_buffer_state();
127 void yy_init_buffer( struct yy_buffer_state* b, istream* s );
128 void yy_flush_buffer( struct yy_buffer_state* b );
119
120 int yy_start_stack_ptr;
121 int yy_start_stack_depth;
122 int* yy_start_stack;
123
124 void yy_push_state( int new_state );
125 void yy_pop_state();
126 int yy_top_state();

--- 36 unchanged lines hidden (view full) ---

163 int* yy_full_state;
164 int yy_full_lp;
165
166 int yy_lp;
167 int yy_looking_for_trail_begin;
168
169 int yy_more_flag;
170 int yy_more_len;
129
130 int yy_start_stack_ptr;
131 int yy_start_stack_depth;
132 int* yy_start_stack;
133
134 void yy_push_state( int new_state );
135 void yy_pop_state();
136 int yy_top_state();

--- 36 unchanged lines hidden (view full) ---

173 int* yy_full_state;
174 int yy_full_lp;
175
176 int yy_lp;
177 int yy_looking_for_trail_begin;
178
179 int yy_more_flag;
180 int yy_more_len;
181 int yy_more_offset;
182 int yy_prev_more_offset;
171};
172
183};
184
173}
174
175#endif
185#endif