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SVG length parsing mode

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SVG allows non-zero lengths to be accepted and assumes they are in px.  This
adds this length parsing mode to Servo.

MozReview-Commit-ID: Kxd3x64r9Ye
This commit is contained in:
J. Ryan Stinnett 2017-04-12 17:40:48 +08:00
parent 0936dd24d0
commit 6069e44f02
18 changed files with 130 additions and 53 deletions
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20
tests/unit/style/parsing/length.rs
View file

@ -5,9 +5,9 @@
use cssparser::Parser;
use media_queries::CSSErrorReporterTest;
use parsing::parse;
use style::parser::{Parse, ParserContext};
use style::parser::{LengthParsingMode, Parse, ParserContext};
use style::stylesheets::{CssRuleType, Origin};
use style::values::specified::length::Length;
use style::values::specified::length::{AbsoluteLength, Length, NoCalcLength};
use style_traits::ToCss;
#[test]
@ -28,3 +28,19 @@ fn test_length_literals() {
assert_roundtrip_with_context!(Length::parse, "0.33pt", "0.33pt");
assert_roundtrip_with_context!(Length::parse, "0.33pc", "0.33pc");
}
#[test]
fn test_length_parsing_modes() {
// In default length mode, non-zero lengths must have a unit.
assert!(parse(Length::parse, "1").is_err());
// In SVG length mode, non-zero lengths are assumed to be px.
let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
let reporter = CSSErrorReporterTest;
let context = ParserContext::new(Origin::Author, &url, &reporter,
Some(CssRuleType::Style), LengthParsingMode::SVG);
let mut parser = Parser::new("1");
let result = Length::parse(&context, &mut parser);
assert!(result.is_ok());
assert_eq!(result.unwrap(), Length::NoCalc(NoCalcLength::Absolute(AbsoluteLength::Px(1.))));
}

5
tests/unit/style/parsing/mod.rs
View file

@ -6,13 +6,14 @@
use cssparser::Parser;
use media_queries::CSSErrorReporterTest;
use style::parser::ParserContext;
use style::parser::{LengthParsingMode, ParserContext};
use style::stylesheets::{CssRuleType, Origin};
fn parse<T, F: Fn(&ParserContext, &mut Parser) -> Result<T, ()>>(f: F, s: &str) -> Result<T, ()> {
let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
let reporter = CSSErrorReporterTest;
let context = ParserContext::new(Origin::Author, &url, &reporter, Some(CssRuleType::Style));
let context = ParserContext::new(Origin::Author, &url, &reporter, Some(CssRuleType::Style),
LengthParsingMode::Default);
let mut parser = Parser::new(s);
f(&context, &mut parser)
}

5
tests/unit/style/properties/mod.rs
View file

@ -4,13 +4,14 @@
use cssparser::Parser;
use media_queries::CSSErrorReporterTest;
use style::parser::ParserContext;
use style::parser::{LengthParsingMode, ParserContext};
use style::stylesheets::{CssRuleType, Origin};
fn parse<T, F: Fn(&ParserContext, &mut Parser) -> Result<T, ()>>(f: F, s: &str) -> Result<T, ()> {
let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
let reporter = CSSErrorReporterTest;
let context = ParserContext::new(Origin::Author, &url, &reporter, Some(CssRuleType::Style));
let context = ParserContext::new(Origin::Author, &url, &reporter, Some(CssRuleType::Style),
LengthParsingMode::Default);
let mut parser = Parser::new(s);
f(&context, &mut parser)
}

5
tests/unit/style/viewport.rs
View file

@ -9,7 +9,7 @@ use servo_config::prefs::{PREFS, PrefValue};
use servo_url::ServoUrl;
use std::sync::Arc;
use style::media_queries::{Device, MediaList, MediaType};
use style::parser::{Parse, ParserContext};
use style::parser::{LengthParsingMode, Parse, ParserContext};
use style::shared_lock::SharedRwLock;
use style::stylesheets::{CssRuleType, Stylesheet, Origin};
use style::values::specified::LengthOrPercentageOrAuto::{self, Auto};
@ -292,7 +292,8 @@ fn multiple_stylesheets_cascading() {
fn constrain_viewport() {
let url = ServoUrl::parse("http://localhost").unwrap();
let reporter = CSSErrorReporterTest;
let context = ParserContext::new(Origin::Author, &url, &reporter, Some(CssRuleType::Viewport));
let context = ParserContext::new(Origin::Author, &url, &reporter, Some(CssRuleType::Viewport),
LengthParsingMode::Default);
macro_rules! from_css {
($css:expr) => {