diff options
Diffstat (limited to 'components/util/str.rs')
| -rw-r--r-- | components/util/str.rs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/components/util/str.rs b/components/util/str.rs index 9978464ee0d..f00dd8e3ea7 100644 --- a/components/util/str.rs +++ b/components/util/str.rs @@ -4,6 +4,7 @@ use app_units::Au; use cssparser::{self, Color, RGBA}; +use euclid::num::Zero; use js::conversions::{FromJSValConvertible, ToJSValConvertible, latin1_to_string}; use js::jsapi::{JSContext, JSString, HandleValue, MutableHandleValue}; use js::jsapi::{JS_GetTwoByteStringCharsAndLength, JS_StringHasLatin1Chars}; @@ -372,6 +373,17 @@ pub fn parse_length(mut value: &str) -> LengthOrPercentageOrAuto { } } +/// HTML5 § 2.4.4.5. +/// +/// https://html.spec.whatwg.org/multipage/#rules-for-parsing-non-zero-dimension-values +pub fn parse_nonzero_length(value: &str) -> LengthOrPercentageOrAuto { + match parse_length(value) { + LengthOrPercentageOrAuto::Length(x) if x == Au::zero() => LengthOrPercentageOrAuto::Auto, + LengthOrPercentageOrAuto::Percentage(0.) => LengthOrPercentageOrAuto::Auto, + x => x, + } +} + /// https://html.spec.whatwg.org/multipage/#rules-for-parsing-a-legacy-font-size pub fn parse_legacy_font_size(mut input: &str) -> Option<&'static str> { // Steps 1 & 2 are not relevant |