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Create A01198339 #139

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106 changes: 106 additions & 0 deletions labs/03/A01198339
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/* ANALYZER.L Emily Rosenfeld AO1198339 */

%{
#include "y.tab.h"
%}

%%

"a"|"the" { return ARTICLE; }
"boy"|"girl"|"flower" { return NOUN; }
"touches"|"likes"|"sees" { return VERB; }
"with" { return PREP; }

[ \t] { /* ignorar whitespace */ }

%%

------------------------------------------------------------------------------------------------------------------------

/* ANALYZER.Y Emily Rosenfeld AO1198339 */

%{
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int yylex();
void yyerror(const char *s);

%}

%union {
char *sval;
}

/* Aqui se definen los tokens */
%token <sval> ARTICLE NOUN VERB PREP EOL
%token SENTENCE NOUN_PHRASE VERB_PHRASE PREP_PHRASE CMPLX_NOUN CMPLX_VERB

%%
/* Aqui se definen las reglas */
sentence: noun_phrase verb_phrase { printf("PASS\n"); }
;

noun_phrase: cmplx_noun { }
| cmplx_noun prep_phrase { }
;

verb_phrase: cmplx_verb { }
| cmplx_verb prep_phrase { }
;

prep_phrase: prep cmplx_noun { }
;

cmplx_noun: article noun { }
;

cmplx_verb: verb { }
| verb noun_phrase { }
;

article: ARTICLE { }
;

noun: NOUN { }
;

verb: VERB { }
;

prep: PREP { }
;

%%

void yyerror(const char *s) {
fprintf(stderr, "Error: %s\n", s);
}

/* Imprimir PASS o FAIL */
int main(int argc, char *argv[]) {
FILE *fd;

if (argc == 2) {
if (!(fd = fopen(argv[1], "r"))) {
perror("Error: ");
return -1;
}

yyset_in(fd);
int result = yyparse();
fclose(fd);

if (result == 0) {
printf("PASS\n");
} else {
printf("FAIL\n");
}
} else {
printf("Usage: %s filename\n", argv[0]);
return -1;
}

return 0;
}