%{
#include <stdio.h>

extern FILE * yyin;

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

int yywrap()
{
    return 1;
}

int main(int argc, char * argv[])
{
    if (argc > 0)
    {
        yyin = fopen(argv[1], "r");
    }
    yyparse();
}

%}

%token ASSIGN;
%token EQUAL;
%token LEQ;
%token GEQ;

%token LSHIFT;
%token RSHIFT;

%token AND;
%token OR;
%token NOT;
%token BIT_AND;
%token BIT_OR;
%token BIT_XOR;
%token BIT_NEG;

%token INCREMENT;
%token DECREMENT;

%token PLUS;
%token MINUS;
%token TIMES;
%token DIVIDE;
%token MOD;

%token SEMICOLON;
%token COLON;
%token QUESTION;
%token DOLLAR;
%token DOT;
%token DQUOTE;
%token SQUOTE;

%token LCURLY;
%token RCURLY;
%token LBRACKET;
%token RBRACKET;
%token LPAREN;
%token RPAREN;

%token BIN_NUMBER;
%token HEX_NUMBER;
%token OCT_NUMBER;
%token DEC_NUMBER;

%token ALIAS;
%token MODULE;
%token RETURN;
%token USE;

%token ID;

%%

program: /* empty */
       | number program { printf("Saw a number\n"); }
       | assignment program { printf("Saw an assignment\n"); }

number: BIN_NUMBER
      | OCT_NUMBER
      | DEC_NUMBER
      | HEX_NUMBER
      ;

assignment: ID ASSIGN number
          ;