27 lines
740 B
Text
27 lines
740 B
Text
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%{
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#include <types.h>
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#include <stdbool.h>
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#include "addrexp.h"
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static bool success = false;
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void yyerror(word_t *result, const char *err);
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word_t reg_str2val(const char *name, bool*);
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%}
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%option noyywrap
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%%
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0[xX][0-9a-fA-F]+ { yylval = strtoul(yytext, NULL, 16); return HEX_NUMBER; }
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[0-9]+ { yylval = strtoul(yytext, NULL, 10); return NUMBER; }
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$[asgprt$][0-9pa][0-9]? {
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yylval = reg_str2val(yytext + 1, &success);
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if(!success) {
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yyerror(NULL, "Failed to convert reg to value");
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return YYerror;
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}
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return REGISTER;
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}
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[+\-*/<=()] { return *yytext; }
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[ \t] { }
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. { printf("Unexpected character: %s\n", yytext); return YYerror; }
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%%
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