So we have a tutorial on flex,bison before we start our complation techniques course at university.
The following test should be split into lines and newlines
testtest test data
second line in the data
another line without a trailing newline
This is what my parser should output:
Line: testtest test data
NL
Line: second line in the data
NL
Line: another line without a trailing newline
When im running following
cat test.txt | ./parser
This returns:
LINE: testtest test data
It's a bad: syntax error
This is in my .y file:
%{
#include<stdio.h>
int yylex(); /* Supress C99 warning on OSX */
extern char *yytext; /* Correct for Flex */
unsigned int total;
%}
%token LINE
%token NL
%%
line : LINE {printf("LINE: %s\n", yytext);}
;
newline : NL {printf("NL\n");}
;
And this is in my binary.flex file:
%top{
#define YYSTYPE int
#include "binary.tab.h" /* Token values generated by bison */
}
%option noyywrap
%%
[^\n\r/]+ return LINE;
\n return NL;
%%
So, any ideas to solve this problem ?
PS: This is my .c file
#include<stdio.h>
#include "binary.tab.h"
extern unsigned int total;
int yyerror(char *c)
{
printf("It's a bad: %s\n", c);
return 0;
}
int main(int argc, char **argv)
{
if(!yyparse())
printf("It's a mario time: %d\n",total);
return 0;
}
