Created
February 21, 2017 19:01
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| use nom::{double}; | |
| named! (pub comma, | |
| tag! (b",")); | |
| // Parse a viewBox attribute | |
| // https://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute | |
| // | |
| // viewBox: double [,] double [,] double [,] double [,] | |
| // | |
| // x, y, w, h | |
| // | |
| // Where w and h must be nonnegative. | |
| named! (pub view_box<(f64, f64, f64, f64)>, | |
| verify! (ws! (do_parse! (x: double >> | |
| opt! (comma) >> | |
| y: double >> | |
| opt! (comma) >> | |
| w: double >> | |
| opt! (comma) >> | |
| h: double >> | |
| (x, y, w, h))), | |
| |(x, y, w, h)| w >= 0.0 && h >= 0.0)); | |
| #[test] | |
| fn parses_view_box () { | |
| assert_eq! (view_box (b"1 2 3 4"), IResult::Done (&b""[..], (1f64, 2f64, 3f64, 4f64))); | |
| } | |
| gives me | |
| ---- parsers::tests::parses_view_box stdout ---- | |
| thread 'parsers::tests::parses_view_box' panicked at 'assertion failed: `(left == right)` (left: `Error(Position(Alt, [49, 32, 50, 32, 51, 32, 52]))`, right: `Done([], (1, 2, 3, 4))`)', parsers.rs:95 |
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