view tests/agcl/parsifal/iaparams.syn @ 20:bb115deb6fb2

Improve agfiles rule. (1) It didn't depend on $(AGCL) and it absolutely should have. (2) allow AGFORCE=1 to make it rebuild whether or not it looks out of date. (3) Document this.
author David A. Holland
date Mon, 13 Jun 2022 00:02:15 -0400
parents 13d2b8934445
children
line wrap: on
line source

{
/* immed.syn */
#include <stdio.h>
}

[
 ~allow macros
//  header file name = "#.hs"   // Output header name
//  parser file name = "#.cs"   // Output c file
]

grammar
 -> whole number..., 'x'

(int)whole number
 -> number: n, ' ' = n;

(long) number
 -> = 0;
 -> number: n, !printf("(%ld)", n);, digit: i, !printf("(%d)", i); = i + 10*n;
/* The printf on the preceding line complains that i is undefined */

(int)digit
 -> '0' = 0;
 -> '1' = 1;
 -> '2' = 2;
 -> '3' = 3;
 -> '4' = 4;
 -> '5' = 5;
 -> '6' = 6;
 -> '7' = 7;
 -> '8' = 8;
 -> '9' = 9;

{ void main() { iaparams(); } }