File: inline.bs

package info (click to toggle)
storm-lang 0.7.4-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 52,004 kB
  • sloc: ansic: 261,462; cpp: 140,405; sh: 14,891; perl: 9,846; python: 2,525; lisp: 2,504; asm: 860; makefile: 678; pascal: 70; java: 52; xml: 37; awk: 12
file content (28 lines) | stat: -rw-r--r-- 417 bytes parent folder | download | duplicates (3) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
 
use test;
use parser;

Str check(Result<Int> r) {
	if (x = r.value) {
		x.toS;
	} else {
		"Error at ${r.end}, ${r.error}";
	}
}

inlineParser : parser(recursive descent) {
	start = Start;
	delimiter = Delim;

	Int Start();
	Start => +(a, b) : Num a, "\+", Num b;

	Int Num();
	Num => toInt(x) : "[0-9]+" x;

	void Delim();
	Delim : "[ \n\r\t]*";
}

test InlineGrammar {
	check check(inlineParser("1 + 3")) == "4";
}