35 lines
733 B
Plaintext
35 lines
733 B
Plaintext
%{
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#include <stdio.h>
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#include <string.h>
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#include "xapp.tab.h"
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%}
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DEC [0-9]+(\.[0-9]+)?
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HEX \$[0-9A-Fa-f]+(\.[0-9A-Fa-f]+)?
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OCT &[0-7]+(\.[0-7]+)?
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BIN %[01]+(\.[01]+)?
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%%
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[A-Za-z_][A-Za-z0-9_]* { strncpy(yylval.sval, yytext, sizeof(yylval.sval)); return IDENTIFIER; }
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{DEC}|{HEX}|{OCT}|{BIN} { strncpy(yylval.sval, yytext, sizeof(yylval.sval)); return CONSTANT; }
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"<<" return LEFT_OP;
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">>" return RIGHT_OP;
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(<=)|(=<) return LE_OP;
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(>=)|(=>) return GE_OP;
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(<>)|(><) return NE_OP;
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"&&" return AND_OP;
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"||" return OR_OP;
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[ \t\r\n]+ ; /* Ignore whitespace */
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[-()<>+~!*/%=&^|] return yytext[0];
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. { fprintf(stderr, "SET (invalid character '%s')\n", yytext); exit(1); }
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%%
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int yywrap(void) {
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return 1;
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}
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