void showExp2(Exp2 e2)
{
switch(e2->flag)
{
case PScons_Soma : printf("(+)");
showExp(e2->u.d1.s1);
break;
case PScons_Sub : printf("(-)");
showExp(e2->u.d2.s1);
break;
case PScons_NIL : break;
}
}
int main(int argc, char ** argv)
{
FILE *input;
Exp parse_tree;
if (argc > 1)
{
input = fopen(argv[1], "r");
if (!input)
{
fprintf(stderr, "Error opening input file.\n");
exit(1);
}
}
else input = stdin;
/* The default entry point is used. For other options see Parser.h */
parse_tree = pExp(input);
if (parse_tree)
{
printf("\nParse Succesful!\n");
printf("\n[Abstract Syntax]\n");
printf("%s\n\n", showExp(parse_tree));
printf("[Linearized Tree]\n");
printf("%s\n\n", printExp(parse_tree));
return 0;
}
return 1;
}
