1 |
mmeineke |
377 |
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2 |
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/* define some search patterns */ |
3 |
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4 |
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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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mmeineke |
842 |
#include <stdlib.h> |
25 |
mmeineke |
377 |
#include <stdio.h> |
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#include <string.h> |
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mmeineke |
854 |
#include "BASSyacc.h" |
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#include "BASS_parse.h" |
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#include "simError.h" |
31 |
mmeineke |
377 |
#ifdef IS_MPI |
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#define __is_lex__ |
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mmeineke |
854 |
#include "mpiBASS.h" |
34 |
mmeineke |
377 |
#endif |
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typedef unsigned short int r_short; |
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mmeineke |
842 |
typedef unsigned short my_short; |
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mmeineke |
377 |
|
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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 |
56 |
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57 |
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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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66 |
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%option yylineno |
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%% |
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{signedNat} { |
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yylval.i_val = atoi( yytext ); |
72 |
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return INTEGER; |
73 |
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} |
74 |
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75 |
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{number} { |
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yylval.d_val = atof( yytext ); |
77 |
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return DOUBLE; |
78 |
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} |
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80 |
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{identifier} { |
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int token; |
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token = res_word( yytext ); |
83 |
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84 |
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if( token == DEFINED ){ |
85 |
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86 |
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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", |
89 |
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yytext ); |
90 |
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exit(1); |
91 |
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} |
92 |
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93 |
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buffer_stack[buffer_stack_ptr] = YY_CURRENT_BUFFER; |
94 |
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buffer_stack_ptr++; |
95 |
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96 |
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yy_scan_string( get_definition( yytext ) ); |
97 |
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} |
98 |
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else if( token ){ |
99 |
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return token; |
100 |
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} |
101 |
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else{ |
102 |
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yylval.s_ptr = strdup( yytext ); |
103 |
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return IDENTIFIER; |
104 |
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} |
105 |
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} |
106 |
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107 |
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\".*\" { |
108 |
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/* little routine to strip off the quotes */ |
109 |
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110 |
mmeineke |
842 |
my_short i; |
111 |
mmeineke |
377 |
i = 0; // index |
112 |
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while( yytext[i+1] != '\"' ){ |
113 |
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114 |
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yytext[i] = yytext[i+1]; |
115 |
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i++; |
116 |
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} |
117 |
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yytext[i] = '\0'; |
118 |
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yylval.s_ptr = strdup( yytext ); |
119 |
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return QUOTED_STRING; |
120 |
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} |
121 |
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122 |
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\[{natural}\] { |
123 |
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int index; |
124 |
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sscanf(yytext, "[%d]", &index); |
125 |
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yylval.i_val = index; |
126 |
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return ARRAY_INDEX; |
127 |
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} |
128 |
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129 |
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[ \t\n]+ /* ignore whitespace */; |
130 |
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131 |
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"/*" { |
132 |
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/* ignore comments */ |
133 |
mmeineke |
842 |
my_short done; |
134 |
mmeineke |
377 |
char c; |
135 |
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136 |
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done = 0; |
137 |
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while( !done ){ |
138 |
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139 |
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c = input(); |
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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while( c == '*' ){ |
145 |
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146 |
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c = input(); |
147 |
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} |
148 |
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if( c == '/' ) done = 1; |
149 |
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} |
150 |
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} |
151 |
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152 |
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"//".*\n /* ignore comments */; |
153 |
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154 |
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"#" BEGIN(PRE_P); |
155 |
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156 |
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. { |
157 |
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// pass everything else to yacc |
158 |
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return yytext[0]; |
159 |
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} |
160 |
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161 |
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<PRE_P>"include" BEGIN(INCL); |
162 |
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<PRE_P>"define" BEGIN(DEF); |
163 |
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<PRE_P>"ifdef" BEGIN(IFDEF); |
164 |
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<PRE_P>"ifndef" BEGIN(IFNDEF); |
165 |
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<PRE_P>"endif" /* do nothing */; |
166 |
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<PRE_P>\n BEGIN(INITIAL); |
167 |
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168 |
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<INCL>[ \t]* /* eat white space */ |
169 |
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<INCL>\".*\" { |
170 |
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char foo_name[300]; |
171 |
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172 |
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// little routine to strip off the quotes |
173 |
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174 |
mmeineke |
842 |
my_short i; |
175 |
mmeineke |
377 |
i = 0; // index |
176 |
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while( yytext[i+1] != '\"' ){ |
177 |
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178 |
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yytext[i] = yytext[i+1]; |
179 |
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i++; |
180 |
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} |
181 |
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182 |
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yytext[i] = '\0'; |
183 |
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strcpy( foo_name, yytext ); |
184 |
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185 |
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// now we have the include file name |
186 |
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187 |
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if( buffer_stack_ptr >= MAX_BUFFER_DEPTH ){ |
188 |
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189 |
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fprintf( stderr, "Includes nested too deeply\n" ); |
190 |
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exit(1); |
191 |
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} |
192 |
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193 |
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buffer_stack[buffer_stack_ptr] = YY_CURRENT_BUFFER; |
194 |
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yylineno_stack[buffer_stack_ptr] = yylineno; |
195 |
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buffer_stack_ptr++; |
196 |
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197 |
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yyin = fopen( yytext, "r" ); |
198 |
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if( yyin == NULL ){ |
199 |
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fprintf( stderr, "Unable to include file %s\n", yytext ); |
200 |
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exit(1); |
201 |
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} |
202 |
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203 |
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yy_switch_to_buffer( yy_create_buffer( yyin, YY_BUF_SIZE ) ); |
204 |
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yylineno = 0; |
205 |
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206 |
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temp_yyfile_name = (struct filename_list* )malloc( sizeof( struct filename_list ) ); |
207 |
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temp_yyfile_name->next = yyfile_name; |
208 |
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yyfile_name = temp_yyfile_name; |
209 |
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strcpy( yyfile_name->my_name, foo_name ); |
210 |
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211 |
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212 |
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BEGIN(INITIAL); |
213 |
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} |
214 |
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<INCL>\n BEGIN(INITIAL); |
215 |
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<INCL>. /* ignore everything else */ |
216 |
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217 |
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<DEF>[ \t]* /* eat white space */; |
218 |
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<DEF>{identifier} { |
219 |
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char c; |
220 |
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char definition[ DEFINED_BUFFER_SIZE ]; |
221 |
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short int done; |
222 |
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short int c_done; // a done marker for the comments |
223 |
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int def_ptr; |
224 |
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225 |
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// initialize the definition buffer |
226 |
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227 |
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for( def_ptr = 0; def_ptr < DEFINED_BUFFER_SIZE; def_ptr++ ){ |
228 |
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definition[def_ptr] = '\0'; |
229 |
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} |
230 |
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231 |
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def_ptr =0; |
232 |
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done = 0; |
233 |
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c_done = 0; |
234 |
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235 |
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while( !done ){ |
236 |
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237 |
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c = input(); |
238 |
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if( c == '\"' ){ |
239 |
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240 |
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// shove the whole quoted string into the macro |
241 |
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242 |
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definition[def_ptr] = c; |
243 |
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//fprintf( stderr, "%c", c ); |
244 |
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def_ptr++; |
245 |
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check_def_buff( yytext, def_ptr ); |
246 |
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247 |
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c = input(); |
248 |
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while( c != '\"' ){ |
249 |
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250 |
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definition[def_ptr] = c; |
251 |
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//fprintf( stderr, "%c", c ); |
252 |
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def_ptr++; |
253 |
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check_def_buff( yytext, def_ptr ); |
254 |
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255 |
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c = input(); |
256 |
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} |
257 |
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definition[def_ptr] = c; |
258 |
|
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//fprintf( stderr, "%c", c ); |
259 |
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def_ptr++; |
260 |
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check_def_buff( yytext, def_ptr ); |
261 |
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c = input(); |
262 |
|
|
} |
263 |
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264 |
|
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// handle comments |
265 |
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266 |
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if( c == '/' ){ |
267 |
|
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c = input(); |
268 |
|
|
switch( c ){ |
269 |
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|
270 |
|
|
case '/': |
271 |
|
|
while( c != '\n' && c != '\\' ){ |
272 |
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c = input(); |
273 |
|
|
} |
274 |
|
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break; |
275 |
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276 |
|
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case '*': |
277 |
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c_done = 0; |
278 |
|
|
while( !c_done ){ |
279 |
|
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c = input(); |
280 |
|
|
while( c != '*' ){ |
281 |
|
|
c = input(); |
282 |
|
|
} |
283 |
|
|
while( c == '*' ){ |
284 |
|
|
c = input(); |
285 |
|
|
} |
286 |
|
|
if( c == '/' ) c_done = 1; |
287 |
|
|
} |
288 |
|
|
c = input(); |
289 |
|
|
break; |
290 |
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|
291 |
|
|
default: |
292 |
|
|
// the '/' char was a normal symbol |
293 |
|
|
definition[def_ptr] = '/'; |
294 |
|
|
//fprintf( stderr, "%c", c ); |
295 |
|
|
def_ptr++; |
296 |
|
|
check_def_buff( yytext, def_ptr ); |
297 |
|
|
break; |
298 |
|
|
} |
299 |
|
|
} |
300 |
|
|
|
301 |
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|
302 |
|
|
if( c == '\n' ){ |
303 |
|
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done = 1; |
304 |
|
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} |
305 |
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|
306 |
|
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else{ |
307 |
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|
308 |
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|
// check for the line wrap character '\' |
309 |
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|
310 |
|
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if( c == '\\' ){ |
311 |
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|
312 |
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// skip the rest of the line until the line return |
313 |
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|
314 |
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c = input(); |
315 |
|
|
while( c != '\n' ){ |
316 |
|
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c = input(); |
317 |
|
|
} |
318 |
|
|
} |
319 |
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|
320 |
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else{ |
321 |
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|
322 |
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// we now know the character is a good one |
323 |
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|
324 |
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definition[def_ptr] = c; |
325 |
|
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//fprintf( stderr, "%c", c ); |
326 |
|
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def_ptr++; |
327 |
|
|
check_def_buff( yytext, def_ptr ); |
328 |
|
|
} |
329 |
|
|
} |
330 |
|
|
} |
331 |
|
|
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332 |
|
|
insert_define( yytext, definition ); |
333 |
|
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BEGIN(INITIAL); |
334 |
|
|
} |
335 |
|
|
<DEF>\n BEGIN(INITIAL); |
336 |
|
|
<DEF>. /* ignore everything else */; |
337 |
|
|
|
338 |
|
|
<IFDEF>[ \t]* /* eat white space */; |
339 |
|
|
<IFDEF>{identifier} { |
340 |
|
|
if( !is_defined( yytext ) ){ |
341 |
|
|
escape_stack_ptr++; |
342 |
|
|
BEGIN(ESCAPE); |
343 |
|
|
} |
344 |
|
|
} |
345 |
|
|
<IFDEF>\n BEGIN(INITIAL); |
346 |
|
|
<IFDEF>. /* ignore everything else */; |
347 |
|
|
|
348 |
|
|
<IFNDEF>[ \t]* /* eat the white space */; |
349 |
|
|
<IFNDEF>{identifier} { |
350 |
|
|
if( is_defined( yytext ) ){ |
351 |
|
|
escape_stack_ptr++; |
352 |
|
|
BEGIN(ESCAPE); |
353 |
|
|
} |
354 |
|
|
} |
355 |
|
|
<IFNDEF>\n BEGIN(INITIAL); |
356 |
|
|
<IFNDEF>. /* ignore everything else */; |
357 |
|
|
|
358 |
|
|
<ESCAPE>\".*\" /* do nothing */; |
359 |
|
|
<ESCAPE>"//".*\n /* ignore comments */; |
360 |
|
|
<ESCAPE>"/*" { |
361 |
|
|
/* ignore comments */ |
362 |
mmeineke |
842 |
my_short done; |
363 |
mmeineke |
377 |
char c; |
364 |
|
|
|
365 |
|
|
done = 0; |
366 |
|
|
while( !done ){ |
367 |
|
|
|
368 |
|
|
c = input(); |
369 |
|
|
while( c != '*' ){ |
370 |
|
|
|
371 |
|
|
c = input(); |
372 |
|
|
} |
373 |
|
|
|
374 |
|
|
while( c == '*' ){ |
375 |
|
|
|
376 |
|
|
c = input(); |
377 |
|
|
} |
378 |
|
|
|
379 |
|
|
if( c == '/' ) done = 1; |
380 |
|
|
} |
381 |
|
|
} |
382 |
|
|
<ESCAPE>"#" BEGIN(CHECK_ESCAPE); |
383 |
|
|
<ESCAPE>. /* ignore everything else */; |
384 |
|
|
|
385 |
|
|
<CHECK_ESCAPE>[ \t] /* ignore whitespace */; |
386 |
|
|
<CHECK_ESCAPE>"ifdef" { escape_stack_ptr++; BEGIN(ESCAPE); } |
387 |
|
|
<CHECK_ESCAPE>"ifndef" { escape_stack_ptr++; BEGIN(ESCAPE); } |
388 |
|
|
<CHECK_ESCAPE>"endif" { |
389 |
|
|
escape_stack_ptr--; |
390 |
|
|
if( escape_stack_ptr <= 0){ |
391 |
|
|
escape_stack_ptr = 0; // just in case something flubbed |
392 |
|
|
BEGIN(INITIAL); |
393 |
|
|
} |
394 |
|
|
} |
395 |
|
|
<CHECK_ESCAPE>\n BEGIN(ESCAPE); |
396 |
|
|
<CHECK_ESCAPE>. /* ignore everything else */; |
397 |
|
|
|
398 |
|
|
<<EOF>> { |
399 |
|
|
buffer_stack_ptr--; |
400 |
|
|
if( buffer_stack_ptr < 0 ){ |
401 |
|
|
|
402 |
|
|
yyterminate(); |
403 |
|
|
} |
404 |
|
|
|
405 |
|
|
else{ |
406 |
|
|
|
407 |
|
|
yy_delete_buffer( YY_CURRENT_BUFFER ); |
408 |
|
|
yy_switch_to_buffer( buffer_stack[buffer_stack_ptr] ); |
409 |
|
|
yylineno = yylineno_stack[buffer_stack_ptr]; |
410 |
|
|
|
411 |
|
|
temp_yyfile_name = yyfile_name; |
412 |
|
|
yyfile_name = temp_yyfile_name->next; |
413 |
|
|
free( temp_yyfile_name ); |
414 |
|
|
} |
415 |
|
|
} |
416 |
|
|
|
417 |
|
|
%% |
418 |
|
|
|
419 |
|
|
void check_def_buff( char* defined, int index ){ |
420 |
|
|
|
421 |
|
|
if( index >= DEFINED_BUFFER_SIZE ){ |
422 |
|
|
|
423 |
|
|
sprintf( painCave.errMsg, "Define buffer size exceeded for %s\n", defined ); |
424 |
|
|
painCave.isFatal = 1; |
425 |
|
|
simError(); |
426 |
|
|
} |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
int yywrap(void){ |
430 |
|
|
return 1; |
431 |
|
|
} |
432 |
|
|
|
433 |
|
|
void change_in_file( FILE* in_file ){ |
434 |
|
|
|
435 |
|
|
yyin = in_file; |
436 |
|
|
} |