| 1 |
mmeineke |
10 |
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| 2 |
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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} |
| 8 |
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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> |
| 25 |
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#include <string.h> |
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#include "BASS_parse.h" |
| 27 |
chuckv |
131 |
#ifdef IS_MPI |
| 28 |
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#define __is_lex__ |
| 29 |
chuckv |
138 |
#include "../headers/mpiBASS.h" |
| 30 |
chuckv |
118 |
#endif |
| 31 |
mmeineke |
10 |
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| 32 |
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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{ |
| 42 |
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char my_name[300]; |
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struct filename_list* next; |
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}; |
| 45 |
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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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| 50 |
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// the following is a check against the define buffer length |
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| 52 |
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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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| 56 |
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int escape_stack_ptr = 0; //keeps track of the escape stack |
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| 58 |
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| 59 |
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%} |
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%option yylineno |
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%% |
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| 65 |
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{signedNat} { |
| 66 |
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yylval.i_val = atoi( yytext ); |
| 67 |
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return INTEGER; |
| 68 |
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} |
| 69 |
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{number} { |
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yylval.d_val = atof( yytext ); |
| 72 |
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return DOUBLE; |
| 73 |
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} |
| 74 |
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| 75 |
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{identifier} { |
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int token; |
| 77 |
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token = res_word( yytext ); |
| 78 |
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| 79 |
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if( token == DEFINED ){ |
| 80 |
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| 81 |
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if( buffer_stack_ptr >= MAX_BUFFER_DEPTH ){ |
| 82 |
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fprintf( stderr, |
| 83 |
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"Maximum buffer depth exceeded for %s.\n", |
| 84 |
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yytext ); |
| 85 |
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exit(1); |
| 86 |
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} |
| 87 |
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| 88 |
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buffer_stack[buffer_stack_ptr] = YY_CURRENT_BUFFER; |
| 89 |
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buffer_stack_ptr++; |
| 90 |
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| 91 |
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yy_scan_string( get_definition( yytext ) ); |
| 92 |
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} |
| 93 |
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else if( token ){ |
| 94 |
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return token; |
| 95 |
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} |
| 96 |
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else{ |
| 97 |
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yylval.s_ptr = strdup( yytext ); |
| 98 |
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return IDENTIFIER; |
| 99 |
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} |
| 100 |
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} |
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\".*\" { |
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/* little routine to strip off the quotes */ |
| 104 |
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u_short i; |
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i = 0; // index |
| 107 |
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while( yytext[i+1] != '\"' ){ |
| 108 |
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| 109 |
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yytext[i] = yytext[i+1]; |
| 110 |
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i++; |
| 111 |
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} |
| 112 |
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yytext[i] = '\0'; |
| 113 |
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yylval.s_ptr = strdup( yytext ); |
| 114 |
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return QUOTED_STRING; |
| 115 |
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} |
| 116 |
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| 117 |
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\[{natural}\] { |
| 118 |
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int index; |
| 119 |
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sscanf(yytext, "[%d]", &index); |
| 120 |
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yylval.i_val = index; |
| 121 |
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return ARRAY_INDEX; |
| 122 |
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} |
| 123 |
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| 124 |
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[ \t\n]+ /* ignore whitespace */; |
| 125 |
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| 126 |
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"/*" { |
| 127 |
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/* ignore comments */ |
| 128 |
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u_short done; |
| 129 |
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char c; |
| 130 |
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| 131 |
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done = 0; |
| 132 |
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while( !done ){ |
| 133 |
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| 134 |
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c = input(); |
| 135 |
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while( c != '*' ){ |
| 136 |
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| 137 |
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c = input(); |
| 138 |
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} |
| 139 |
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while( c == '*' ){ |
| 140 |
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| 141 |
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c = input(); |
| 142 |
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} |
| 143 |
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if( c == '/' ) done = 1; |
| 144 |
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} |
| 145 |
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} |
| 146 |
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| 147 |
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"//".*\n /* ignore comments */; |
| 148 |
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| 149 |
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"#" BEGIN(PRE_P); |
| 150 |
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| 151 |
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. { |
| 152 |
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// pass everything else to yacc |
| 153 |
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return yytext[0]; |
| 154 |
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} |
| 155 |
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| 156 |
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<PRE_P>"include" BEGIN(INCL); |
| 157 |
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<PRE_P>"define" BEGIN(DEF); |
| 158 |
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<PRE_P>"ifdef" BEGIN(IFDEF); |
| 159 |
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<PRE_P>"ifndef" BEGIN(IFNDEF); |
| 160 |
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<PRE_P>"endif" /* do nothing */; |
| 161 |
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<PRE_P>\n BEGIN(INITIAL); |
| 162 |
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| 163 |
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<INCL>[ \t]* /* eat white space */ |
| 164 |
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<INCL>\".*\" { |
| 165 |
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char foo_name[300]; |
| 166 |
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| 167 |
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// little routine to strip off the quotes |
| 168 |
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| 169 |
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u_short i; |
| 170 |
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i = 0; // index |
| 171 |
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while( yytext[i+1] != '\"' ){ |
| 172 |
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| 173 |
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yytext[i] = yytext[i+1]; |
| 174 |
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i++; |
| 175 |
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} |
| 176 |
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| 177 |
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yytext[i] = '\0'; |
| 178 |
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strcpy( foo_name, yytext ); |
| 179 |
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| 180 |
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// now we have the include file name |
| 181 |
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| 182 |
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if( buffer_stack_ptr >= MAX_BUFFER_DEPTH ){ |
| 183 |
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| 184 |
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fprintf( stderr, "Includes nested too deeply\n" ); |
| 185 |
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exit(1); |
| 186 |
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} |
| 187 |
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| 188 |
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buffer_stack[buffer_stack_ptr] = YY_CURRENT_BUFFER; |
| 189 |
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yylineno_stack[buffer_stack_ptr] = yylineno; |
| 190 |
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buffer_stack_ptr++; |
| 191 |
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| 192 |
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yyin = fopen( yytext, "r" ); |
| 193 |
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if( yyin == NULL ){ |
| 194 |
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fprintf( stderr, "Unable to include file %s\n", yytext ); |
| 195 |
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exit(1); |
| 196 |
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} |
| 197 |
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| 198 |
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yy_switch_to_buffer( yy_create_buffer( yyin, YY_BUF_SIZE ) ); |
| 199 |
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yylineno = 0; |
| 200 |
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| 201 |
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temp_yyfile_name = (struct filename_list* )malloc( sizeof( struct filename_list ) ); |
| 202 |
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temp_yyfile_name->next = yyfile_name; |
| 203 |
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yyfile_name = temp_yyfile_name; |
| 204 |
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strcpy( yyfile_name->my_name, foo_name ); |
| 205 |
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| 206 |
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| 207 |
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BEGIN(INITIAL); |
| 208 |
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} |
| 209 |
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<INCL>\n BEGIN(INITIAL); |
| 210 |
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<INCL>. /* ignore everything else */ |
| 211 |
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| 212 |
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<DEF>[ \t]* /* eat white space */; |
| 213 |
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<DEF>{identifier} { |
| 214 |
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char c; |
| 215 |
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char definition[ DEFINED_BUFFER_SIZE ]; |
| 216 |
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short int done; |
| 217 |
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short int c_done; // a done marker for the comments |
| 218 |
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int def_ptr; |
| 219 |
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| 220 |
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// initialize the definition buffer |
| 221 |
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| 222 |
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for( def_ptr = 0; def_ptr < DEFINED_BUFFER_SIZE; def_ptr++ ){ |
| 223 |
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definition[def_ptr] = '\0'; |
| 224 |
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} |
| 225 |
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| 226 |
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def_ptr =0; |
| 227 |
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done = 0; |
| 228 |
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c_done = 0; |
| 229 |
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| 230 |
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while( !done ){ |
| 231 |
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| 232 |
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c = input(); |
| 233 |
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if( c == '\"' ){ |
| 234 |
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| 235 |
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// shove the whole quoted string into the macro |
| 236 |
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| 237 |
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definition[def_ptr] = c; |
| 238 |
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fprintf( stderr, "%c", c ); |
| 239 |
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def_ptr++; |
| 240 |
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check_def_buff( yytext, def_ptr ); |
| 241 |
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| 242 |
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c = input(); |
| 243 |
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while( c != '\"' ){ |
| 244 |
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| 245 |
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definition[def_ptr] = c; |
| 246 |
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fprintf( stderr, "%c", c ); |
| 247 |
|
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def_ptr++; |
| 248 |
|
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check_def_buff( yytext, def_ptr ); |
| 249 |
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| 250 |
|
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c = input(); |
| 251 |
|
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} |
| 252 |
|
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definition[def_ptr] = c; |
| 253 |
|
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fprintf( stderr, "%c", c ); |
| 254 |
|
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def_ptr++; |
| 255 |
|
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check_def_buff( yytext, def_ptr ); |
| 256 |
|
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c = input(); |
| 257 |
|
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} |
| 258 |
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| 259 |
|
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// handle comments |
| 260 |
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|
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| 261 |
|
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if( c == '/' ){ |
| 262 |
|
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c = input(); |
| 263 |
|
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switch( c ){ |
| 264 |
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|
| 265 |
|
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case '/': |
| 266 |
|
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while( c != '\n' && c != '\\' ){ |
| 267 |
|
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c = input(); |
| 268 |
|
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} |
| 269 |
|
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break; |
| 270 |
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| 271 |
|
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case '*': |
| 272 |
|
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c_done = 0; |
| 273 |
|
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while( !c_done ){ |
| 274 |
|
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c = input(); |
| 275 |
|
|
while( c != '*' ){ |
| 276 |
|
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c = input(); |
| 277 |
|
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} |
| 278 |
|
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while( c == '*' ){ |
| 279 |
|
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c = input(); |
| 280 |
|
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} |
| 281 |
|
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if( c == '/' ) c_done = 1; |
| 282 |
|
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} |
| 283 |
|
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c = input(); |
| 284 |
|
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break; |
| 285 |
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| 286 |
|
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default: |
| 287 |
|
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// the '/' char was a normal symbol |
| 288 |
|
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definition[def_ptr] = '/'; |
| 289 |
|
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fprintf( stderr, "%c", c ); |
| 290 |
|
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def_ptr++; |
| 291 |
|
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check_def_buff( yytext, def_ptr ); |
| 292 |
|
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break; |
| 293 |
|
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} |
| 294 |
|
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} |
| 295 |
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|
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| 296 |
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|
|
| 297 |
|
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if( c == '\n' ){ |
| 298 |
|
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done = 1; |
| 299 |
|
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} |
| 300 |
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| 301 |
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else{ |
| 302 |
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| 303 |
|
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// check for the line wrap character '\' |
| 304 |
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| 305 |
|
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if( c == '\\' ){ |
| 306 |
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| 307 |
|
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// skip the rest of the line until the line return |
| 308 |
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| 309 |
|
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c = input(); |
| 310 |
|
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while( c != '\n' ){ |
| 311 |
|
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c = input(); |
| 312 |
|
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} |
| 313 |
|
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} |
| 314 |
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| 315 |
|
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else{ |
| 316 |
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| 317 |
|
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// we now know the character is a good one |
| 318 |
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| 319 |
|
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definition[def_ptr] = c; |
| 320 |
|
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fprintf( stderr, "%c", c ); |
| 321 |
|
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def_ptr++; |
| 322 |
|
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check_def_buff( yytext, def_ptr ); |
| 323 |
|
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} |
| 324 |
|
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} |
| 325 |
|
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} |
| 326 |
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|
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| 327 |
|
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insert_define( yytext, definition ); |
| 328 |
|
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BEGIN(INITIAL); |
| 329 |
|
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} |
| 330 |
|
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<DEF>\n BEGIN(INITIAL); |
| 331 |
|
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<DEF>. /* ignore everything else */; |
| 332 |
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| 333 |
|
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<IFDEF>[ \t]* /* eat white space */; |
| 334 |
|
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<IFDEF>{identifier} { |
| 335 |
|
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if( !is_defined( yytext ) ){ |
| 336 |
|
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escape_stack_ptr++; |
| 337 |
|
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BEGIN(ESCAPE); |
| 338 |
|
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} |
| 339 |
|
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} |
| 340 |
|
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<IFDEF>\n BEGIN(INITIAL); |
| 341 |
|
|
<IFDEF>. /* ignore everything else */; |
| 342 |
|
|
|
| 343 |
|
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<IFNDEF>[ \t]* /* eat the white space */; |
| 344 |
|
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<IFNDEF>{identifier} { |
| 345 |
|
|
if( is_defined( yytext ) ){ |
| 346 |
|
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escape_stack_ptr++; |
| 347 |
|
|
BEGIN(ESCAPE); |
| 348 |
|
|
} |
| 349 |
|
|
} |
| 350 |
|
|
<IFNDEF>\n BEGIN(INITIAL); |
| 351 |
|
|
<IFNDEF>. /* ignore everything else */; |
| 352 |
|
|
|
| 353 |
|
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<ESCAPE>\".*\" /* do nothing */; |
| 354 |
|
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<ESCAPE>"//".*\n /* ignore comments */; |
| 355 |
|
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<ESCAPE>"/*" { |
| 356 |
|
|
/* ignore comments */ |
| 357 |
|
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u_short done; |
| 358 |
|
|
char c; |
| 359 |
|
|
|
| 360 |
|
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done = 0; |
| 361 |
|
|
while( !done ){ |
| 362 |
|
|
|
| 363 |
|
|
c = input(); |
| 364 |
|
|
while( c != '*' ){ |
| 365 |
|
|
|
| 366 |
|
|
c = input(); |
| 367 |
|
|
} |
| 368 |
|
|
|
| 369 |
|
|
while( c == '*' ){ |
| 370 |
|
|
|
| 371 |
|
|
c = input(); |
| 372 |
|
|
} |
| 373 |
|
|
|
| 374 |
|
|
if( c == '/' ) done = 1; |
| 375 |
|
|
} |
| 376 |
|
|
} |
| 377 |
|
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<ESCAPE>"#" BEGIN(CHECK_ESCAPE); |
| 378 |
|
|
<ESCAPE>. /* ignore everything else */; |
| 379 |
|
|
|
| 380 |
|
|
<CHECK_ESCAPE>[ \t] /* ignore whitespace */; |
| 381 |
|
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<CHECK_ESCAPE>"ifdef" { escape_stack_ptr++; BEGIN(ESCAPE); } |
| 382 |
|
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<CHECK_ESCAPE>"ifndef" { escape_stack_ptr++; BEGIN(ESCAPE); } |
| 383 |
|
|
<CHECK_ESCAPE>"endif" { |
| 384 |
|
|
escape_stack_ptr--; |
| 385 |
|
|
if( escape_stack_ptr <= 0){ |
| 386 |
|
|
escape_stack_ptr = 0; // just in case something flubbed |
| 387 |
|
|
BEGIN(INITIAL); |
| 388 |
|
|
} |
| 389 |
|
|
} |
| 390 |
|
|
<CHECK_ESCAPE>\n BEGIN(ESCAPE); |
| 391 |
|
|
<CHECK_ESCAPE>. /* ignore everything else */; |
| 392 |
|
|
|
| 393 |
|
|
<<EOF>> { |
| 394 |
|
|
buffer_stack_ptr--; |
| 395 |
|
|
if( buffer_stack_ptr < 0 ){ |
| 396 |
|
|
|
| 397 |
|
|
yyterminate(); |
| 398 |
|
|
} |
| 399 |
|
|
|
| 400 |
|
|
else{ |
| 401 |
|
|
|
| 402 |
|
|
yy_delete_buffer( YY_CURRENT_BUFFER ); |
| 403 |
|
|
yy_switch_to_buffer( buffer_stack[buffer_stack_ptr] ); |
| 404 |
|
|
yylineno = yylineno_stack[buffer_stack_ptr]; |
| 405 |
|
|
|
| 406 |
|
|
temp_yyfile_name = yyfile_name; |
| 407 |
|
|
yyfile_name = temp_yyfile_name->next; |
| 408 |
|
|
free( temp_yyfile_name ); |
| 409 |
|
|
} |
| 410 |
|
|
} |
| 411 |
|
|
|
| 412 |
|
|
%% |
| 413 |
|
|
|
| 414 |
|
|
void check_def_buff( char* defined, int index ){ |
| 415 |
|
|
|
| 416 |
|
|
if( index >= DEFINED_BUFFER_SIZE ){ |
| 417 |
|
|
|
| 418 |
|
|
fprintf( stderr, "Define buffer size exceeded for %s\n", defined ); |
| 419 |
chuckv |
131 |
#ifdef IS_MPI |
| 420 |
chuckv |
118 |
mpiInterfaceExit(); |
| 421 |
|
|
#endif |
| 422 |
mmeineke |
10 |
exit(1); |
| 423 |
|
|
} |
| 424 |
|
|
} |
| 425 |
|
|
|
| 426 |
|
|
int yywrap(void){ |
| 427 |
|
|
return 1; |
| 428 |
|
|
} |
| 429 |
|
|
|
| 430 |
|
|
void change_in_file( FILE* in_file ){ |
| 431 |
|
|
|
| 432 |
|
|
yyin = in_file; |
| 433 |
|
|
} |
