1 |
mmeineke |
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/* define some search patterns */ |
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digit [0-9] |
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letter [A-Za-z] |
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natural {digit}+ |
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signedNat ("+"|"-")?{natural} |
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number {signedNat}("."{natural})?([Ee]{signedNat})? |
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identifier ("_"|{letter})({letter}|{digit}|"-"|"_")* |
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/* define start states */ |
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%x PRE_P |
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%x INCL |
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%x DEF |
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%x IFDEF |
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%x IFNDEF |
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%x ESCAPE |
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%x CHECK_ESCAPE |
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/* what to put at the top of the lex code */ |
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%{ |
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#include <stdio.h> |
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#include <string.h> |
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#include "BASS_parse.h" |
27 |
mmeineke |
157 |
#include "../headers/simError.h" |
28 |
chuckv |
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#ifdef IS_MPI |
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#define __is_lex__ |
30 |
chuckv |
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#include "../headers/mpiBASS.h" |
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chuckv |
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#endif |
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mmeineke |
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typedef unsigned short int r_short; |
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extern void change_in_file( FILE* in_file ); |
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// the following is used by the include start state |
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#define MAX_BUFFER_DEPTH 10 |
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YY_BUFFER_STATE buffer_stack[MAX_BUFFER_DEPTH]; // a stack of the include buffers |
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int buffer_stack_ptr = 0; |
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struct filename_list{ |
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char my_name[300]; |
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struct filename_list* next; |
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}; |
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struct filename_list* yyfile_name; |
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struct filename_list* temp_yyfile_name; |
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int yylineno_stack[MAX_BUFFER_DEPTH]; |
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// the following is a check against the define buffer length |
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void check_def_buff( char* defined, int index ); |
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//these are used by the ifdef and ifndef statements |
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int escape_stack_ptr = 0; //keeps track of the escape stack |
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%} |
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%option yylineno |
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%% |
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{signedNat} { |
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yylval.i_val = atoi( yytext ); |
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return INTEGER; |
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} |
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{number} { |
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yylval.d_val = atof( yytext ); |
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return DOUBLE; |
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} |
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{identifier} { |
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int token; |
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token = res_word( yytext ); |
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if( token == DEFINED ){ |
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if( buffer_stack_ptr >= MAX_BUFFER_DEPTH ){ |
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fprintf( stderr, |
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"Maximum buffer depth exceeded for %s.\n", |
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yytext ); |
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exit(1); |
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} |
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buffer_stack[buffer_stack_ptr] = YY_CURRENT_BUFFER; |
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buffer_stack_ptr++; |
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92 |
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yy_scan_string( get_definition( yytext ) ); |
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} |
94 |
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else if( token ){ |
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return token; |
96 |
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} |
97 |
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else{ |
98 |
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yylval.s_ptr = strdup( yytext ); |
99 |
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return IDENTIFIER; |
100 |
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} |
101 |
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} |
102 |
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103 |
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\".*\" { |
104 |
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/* little routine to strip off the quotes */ |
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u_short i; |
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i = 0; // index |
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while( yytext[i+1] != '\"' ){ |
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110 |
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yytext[i] = yytext[i+1]; |
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i++; |
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} |
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yytext[i] = '\0'; |
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yylval.s_ptr = strdup( yytext ); |
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return QUOTED_STRING; |
116 |
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} |
117 |
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118 |
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\[{natural}\] { |
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int index; |
120 |
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sscanf(yytext, "[%d]", &index); |
121 |
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yylval.i_val = index; |
122 |
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return ARRAY_INDEX; |
123 |
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} |
124 |
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125 |
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[ \t\n]+ /* ignore whitespace */; |
126 |
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127 |
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"/*" { |
128 |
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/* ignore comments */ |
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u_short done; |
130 |
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char c; |
131 |
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132 |
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done = 0; |
133 |
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while( !done ){ |
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135 |
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c = input(); |
136 |
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while( c != '*' ){ |
137 |
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138 |
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c = input(); |
139 |
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} |
140 |
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while( c == '*' ){ |
141 |
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142 |
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c = input(); |
143 |
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} |
144 |
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if( c == '/' ) done = 1; |
145 |
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} |
146 |
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} |
147 |
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148 |
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"//".*\n /* ignore comments */; |
149 |
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150 |
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"#" BEGIN(PRE_P); |
151 |
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152 |
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. { |
153 |
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// pass everything else to yacc |
154 |
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return yytext[0]; |
155 |
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} |
156 |
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157 |
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<PRE_P>"include" BEGIN(INCL); |
158 |
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<PRE_P>"define" BEGIN(DEF); |
159 |
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<PRE_P>"ifdef" BEGIN(IFDEF); |
160 |
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<PRE_P>"ifndef" BEGIN(IFNDEF); |
161 |
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<PRE_P>"endif" /* do nothing */; |
162 |
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<PRE_P>\n BEGIN(INITIAL); |
163 |
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164 |
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<INCL>[ \t]* /* eat white space */ |
165 |
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<INCL>\".*\" { |
166 |
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char foo_name[300]; |
167 |
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168 |
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// little routine to strip off the quotes |
169 |
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170 |
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u_short i; |
171 |
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i = 0; // index |
172 |
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while( yytext[i+1] != '\"' ){ |
173 |
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174 |
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yytext[i] = yytext[i+1]; |
175 |
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i++; |
176 |
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} |
177 |
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178 |
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yytext[i] = '\0'; |
179 |
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strcpy( foo_name, yytext ); |
180 |
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181 |
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// now we have the include file name |
182 |
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183 |
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if( buffer_stack_ptr >= MAX_BUFFER_DEPTH ){ |
184 |
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185 |
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fprintf( stderr, "Includes nested too deeply\n" ); |
186 |
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exit(1); |
187 |
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} |
188 |
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189 |
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buffer_stack[buffer_stack_ptr] = YY_CURRENT_BUFFER; |
190 |
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yylineno_stack[buffer_stack_ptr] = yylineno; |
191 |
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buffer_stack_ptr++; |
192 |
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193 |
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yyin = fopen( yytext, "r" ); |
194 |
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if( yyin == NULL ){ |
195 |
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fprintf( stderr, "Unable to include file %s\n", yytext ); |
196 |
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exit(1); |
197 |
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} |
198 |
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199 |
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yy_switch_to_buffer( yy_create_buffer( yyin, YY_BUF_SIZE ) ); |
200 |
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yylineno = 0; |
201 |
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202 |
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temp_yyfile_name = (struct filename_list* )malloc( sizeof( struct filename_list ) ); |
203 |
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temp_yyfile_name->next = yyfile_name; |
204 |
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yyfile_name = temp_yyfile_name; |
205 |
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strcpy( yyfile_name->my_name, foo_name ); |
206 |
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207 |
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208 |
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BEGIN(INITIAL); |
209 |
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} |
210 |
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<INCL>\n BEGIN(INITIAL); |
211 |
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<INCL>. /* ignore everything else */ |
212 |
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213 |
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<DEF>[ \t]* /* eat white space */; |
214 |
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<DEF>{identifier} { |
215 |
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char c; |
216 |
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char definition[ DEFINED_BUFFER_SIZE ]; |
217 |
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short int done; |
218 |
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short int c_done; // a done marker for the comments |
219 |
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int def_ptr; |
220 |
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221 |
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// initialize the definition buffer |
222 |
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223 |
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for( def_ptr = 0; def_ptr < DEFINED_BUFFER_SIZE; def_ptr++ ){ |
224 |
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definition[def_ptr] = '\0'; |
225 |
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} |
226 |
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227 |
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def_ptr =0; |
228 |
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done = 0; |
229 |
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c_done = 0; |
230 |
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231 |
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while( !done ){ |
232 |
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233 |
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c = input(); |
234 |
|
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if( c == '\"' ){ |
235 |
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236 |
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// shove the whole quoted string into the macro |
237 |
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238 |
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definition[def_ptr] = c; |
239 |
mmeineke |
157 |
//fprintf( stderr, "%c", c ); |
240 |
mmeineke |
10 |
def_ptr++; |
241 |
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check_def_buff( yytext, def_ptr ); |
242 |
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243 |
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c = input(); |
244 |
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while( c != '\"' ){ |
245 |
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246 |
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definition[def_ptr] = c; |
247 |
mmeineke |
157 |
//fprintf( stderr, "%c", c ); |
248 |
mmeineke |
10 |
def_ptr++; |
249 |
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check_def_buff( yytext, def_ptr ); |
250 |
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251 |
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c = input(); |
252 |
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} |
253 |
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definition[def_ptr] = c; |
254 |
mmeineke |
157 |
//fprintf( stderr, "%c", c ); |
255 |
mmeineke |
10 |
def_ptr++; |
256 |
|
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check_def_buff( yytext, def_ptr ); |
257 |
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c = input(); |
258 |
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} |
259 |
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260 |
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// handle comments |
261 |
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|
262 |
|
|
if( c == '/' ){ |
263 |
|
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c = input(); |
264 |
|
|
switch( c ){ |
265 |
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|
266 |
|
|
case '/': |
267 |
|
|
while( c != '\n' && c != '\\' ){ |
268 |
|
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c = input(); |
269 |
|
|
} |
270 |
|
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break; |
271 |
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272 |
|
|
case '*': |
273 |
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c_done = 0; |
274 |
|
|
while( !c_done ){ |
275 |
|
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c = input(); |
276 |
|
|
while( c != '*' ){ |
277 |
|
|
c = input(); |
278 |
|
|
} |
279 |
|
|
while( c == '*' ){ |
280 |
|
|
c = input(); |
281 |
|
|
} |
282 |
|
|
if( c == '/' ) c_done = 1; |
283 |
|
|
} |
284 |
|
|
c = input(); |
285 |
|
|
break; |
286 |
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|
|
287 |
|
|
default: |
288 |
|
|
// the '/' char was a normal symbol |
289 |
|
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definition[def_ptr] = '/'; |
290 |
mmeineke |
157 |
//fprintf( stderr, "%c", c ); |
291 |
mmeineke |
10 |
def_ptr++; |
292 |
|
|
check_def_buff( yytext, def_ptr ); |
293 |
|
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break; |
294 |
|
|
} |
295 |
|
|
} |
296 |
|
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|
297 |
|
|
|
298 |
|
|
if( c == '\n' ){ |
299 |
|
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done = 1; |
300 |
|
|
} |
301 |
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302 |
|
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else{ |
303 |
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|
304 |
|
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// check for the line wrap character '\' |
305 |
|
|
|
306 |
|
|
if( c == '\\' ){ |
307 |
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|
308 |
|
|
// skip the rest of the line until the line return |
309 |
|
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|
310 |
|
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c = input(); |
311 |
|
|
while( c != '\n' ){ |
312 |
|
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c = input(); |
313 |
|
|
} |
314 |
|
|
} |
315 |
|
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|
316 |
|
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else{ |
317 |
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|
318 |
|
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// we now know the character is a good one |
319 |
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|
320 |
|
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definition[def_ptr] = c; |
321 |
mmeineke |
157 |
//fprintf( stderr, "%c", c ); |
322 |
mmeineke |
10 |
def_ptr++; |
323 |
|
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check_def_buff( yytext, def_ptr ); |
324 |
|
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} |
325 |
|
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} |
326 |
|
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} |
327 |
|
|
|
328 |
|
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insert_define( yytext, definition ); |
329 |
|
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BEGIN(INITIAL); |
330 |
|
|
} |
331 |
|
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<DEF>\n BEGIN(INITIAL); |
332 |
|
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<DEF>. /* ignore everything else */; |
333 |
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|
334 |
|
|
<IFDEF>[ \t]* /* eat white space */; |
335 |
|
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<IFDEF>{identifier} { |
336 |
|
|
if( !is_defined( yytext ) ){ |
337 |
|
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escape_stack_ptr++; |
338 |
|
|
BEGIN(ESCAPE); |
339 |
|
|
} |
340 |
|
|
} |
341 |
|
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<IFDEF>\n BEGIN(INITIAL); |
342 |
|
|
<IFDEF>. /* ignore everything else */; |
343 |
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|
|
344 |
|
|
<IFNDEF>[ \t]* /* eat the white space */; |
345 |
|
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<IFNDEF>{identifier} { |
346 |
|
|
if( is_defined( yytext ) ){ |
347 |
|
|
escape_stack_ptr++; |
348 |
|
|
BEGIN(ESCAPE); |
349 |
|
|
} |
350 |
|
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} |
351 |
|
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<IFNDEF>\n BEGIN(INITIAL); |
352 |
|
|
<IFNDEF>. /* ignore everything else */; |
353 |
|
|
|
354 |
|
|
<ESCAPE>\".*\" /* do nothing */; |
355 |
|
|
<ESCAPE>"//".*\n /* ignore comments */; |
356 |
|
|
<ESCAPE>"/*" { |
357 |
|
|
/* ignore comments */ |
358 |
|
|
u_short done; |
359 |
|
|
char c; |
360 |
|
|
|
361 |
|
|
done = 0; |
362 |
|
|
while( !done ){ |
363 |
|
|
|
364 |
|
|
c = input(); |
365 |
|
|
while( c != '*' ){ |
366 |
|
|
|
367 |
|
|
c = input(); |
368 |
|
|
} |
369 |
|
|
|
370 |
|
|
while( c == '*' ){ |
371 |
|
|
|
372 |
|
|
c = input(); |
373 |
|
|
} |
374 |
|
|
|
375 |
|
|
if( c == '/' ) done = 1; |
376 |
|
|
} |
377 |
|
|
} |
378 |
|
|
<ESCAPE>"#" BEGIN(CHECK_ESCAPE); |
379 |
|
|
<ESCAPE>. /* ignore everything else */; |
380 |
|
|
|
381 |
|
|
<CHECK_ESCAPE>[ \t] /* ignore whitespace */; |
382 |
|
|
<CHECK_ESCAPE>"ifdef" { escape_stack_ptr++; BEGIN(ESCAPE); } |
383 |
|
|
<CHECK_ESCAPE>"ifndef" { escape_stack_ptr++; BEGIN(ESCAPE); } |
384 |
|
|
<CHECK_ESCAPE>"endif" { |
385 |
|
|
escape_stack_ptr--; |
386 |
|
|
if( escape_stack_ptr <= 0){ |
387 |
|
|
escape_stack_ptr = 0; // just in case something flubbed |
388 |
|
|
BEGIN(INITIAL); |
389 |
|
|
} |
390 |
|
|
} |
391 |
|
|
<CHECK_ESCAPE>\n BEGIN(ESCAPE); |
392 |
|
|
<CHECK_ESCAPE>. /* ignore everything else */; |
393 |
|
|
|
394 |
|
|
<<EOF>> { |
395 |
|
|
buffer_stack_ptr--; |
396 |
|
|
if( buffer_stack_ptr < 0 ){ |
397 |
|
|
|
398 |
|
|
yyterminate(); |
399 |
|
|
} |
400 |
|
|
|
401 |
|
|
else{ |
402 |
|
|
|
403 |
|
|
yy_delete_buffer( YY_CURRENT_BUFFER ); |
404 |
|
|
yy_switch_to_buffer( buffer_stack[buffer_stack_ptr] ); |
405 |
|
|
yylineno = yylineno_stack[buffer_stack_ptr]; |
406 |
|
|
|
407 |
|
|
temp_yyfile_name = yyfile_name; |
408 |
|
|
yyfile_name = temp_yyfile_name->next; |
409 |
|
|
free( temp_yyfile_name ); |
410 |
|
|
} |
411 |
|
|
} |
412 |
|
|
|
413 |
|
|
%% |
414 |
|
|
|
415 |
|
|
void check_def_buff( char* defined, int index ){ |
416 |
|
|
|
417 |
|
|
if( index >= DEFINED_BUFFER_SIZE ){ |
418 |
|
|
|
419 |
mmeineke |
157 |
sprintf( painCave.errMsg, "Define buffer size exceeded for %s\n", defined ); |
420 |
|
|
painCave.isFatal = 1; |
421 |
|
|
simError(); |
422 |
mmeineke |
10 |
} |
423 |
|
|
} |
424 |
|
|
|
425 |
|
|
int yywrap(void){ |
426 |
|
|
return 1; |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
void change_in_file( FILE* in_file ){ |
430 |
|
|
|
431 |
|
|
yyin = in_file; |
432 |
|
|
} |