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Port to the new cssparser.
https://github.com/servo/rust-cssparser/pull/68
This commit is contained in:
Simon Sapin
parent
ad328fda65
commit
d034a6c6bc
20 changed files with 2018 additions and 2388 deletions
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@ -2,24 +2,23 @@
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use cssparser::ast::*;
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use cssparser::ast::ComponentValue::*;
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use cssparser::parse_declaration_list;
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use errors::{ErrorLoggerIterator, log_css_error};
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use cssparser::{Token, Parser, DeclarationListParser, AtRuleParser, DeclarationParser};
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use std::ascii::AsciiExt;
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use parsing_utils::{BufferedIter, ParserIter, parse_slice_comma_separated};
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use properties::longhands::font_family::parse_one_family;
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use properties::computed_values::font_family::FontFamily::FamilyName;
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use stylesheets::CSSRule;
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use properties::longhands::font_family::parse_one_family;
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use properties::computed_values::font_family::FontFamily;
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use media_queries::Device;
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use url::{Url, UrlParser};
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use parser::ParserContext;
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pub fn iter_font_face_rules_inner(rules: &[CSSRule], device: &Device,
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callback: |family: &str, source: &Source|) {
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for rule in rules.iter() {
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match *rule {
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CSSRule::Style(_) => {},
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CSSRule::Style(..) |
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CSSRule::Charset(..) |
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CSSRule::Namespace(..) => {},
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CSSRule::Media(ref rule) => if rule.media_queries.evaluate(device) {
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iter_font_face_rules_inner(rule.rules.as_slice(), device, |f, s| callback(f, s))
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},
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@ -32,102 +31,94 @@ pub fn iter_font_face_rules_inner(rules: &[CSSRule], device: &Device,
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}
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}
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#[deriving(Clone)]
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#[deriving(Clone, Show, PartialEq, Eq)]
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pub enum Source {
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Url(UrlSource),
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Local(String),
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}
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#[deriving(Clone)]
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#[deriving(Clone, Show, PartialEq, Eq)]
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pub struct UrlSource {
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pub url: Url,
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pub format_hints: Vec<String>,
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}
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#[deriving(Show, PartialEq, Eq)]
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pub struct FontFaceRule {
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pub family: String,
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pub sources: Vec<Source>,
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}
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pub fn parse_font_face_rule(rule: AtRule, parent_rules: &mut Vec<CSSRule>, base_url: &Url) {
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if rule.prelude.as_slice().skip_whitespace().next().is_some() {
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log_css_error(rule.location, "@font-face prelude contains unexpected characters");
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return;
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}
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let block = match rule.block {
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Some(block) => block,
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None => {
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log_css_error(rule.location, "Invalid @font-face rule");
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return
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}
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pub fn parse_font_face_block(context: &ParserContext, input: &mut Parser)
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-> Result<FontFaceRule, ()> {
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let parser = FontFaceRuleParser {
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context: context,
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family: None,
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src: None,
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};
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let mut maybe_family = None;
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let mut maybe_sources = None;
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for item in ErrorLoggerIterator(parse_declaration_list(block.into_iter())) {
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match item {
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DeclarationListItem::AtRule(rule) => log_css_error(
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rule.location, format!("Unsupported at-rule in declaration list: @{}", rule.name).as_slice()),
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DeclarationListItem::Declaration(Declaration{ location, name, value, important }) => {
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if important {
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log_css_error(location, "!important is not allowed on @font-face descriptors");
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continue
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}
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let name_lower = name.as_slice().to_ascii_lower();
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match name_lower.as_slice() {
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"font-family" => {
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let iter = &mut BufferedIter::new(value.as_slice().skip_whitespace());
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match parse_one_family(iter) {
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Ok(FamilyName(name)) => {
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maybe_family = Some(name);
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},
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// This also includes generic family names:
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_ => log_css_error(location, "Invalid font-family in @font-face"),
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}
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},
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"src" => {
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match parse_slice_comma_separated(
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value.as_slice(), |iter| parse_one_src(iter, base_url)) {
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Ok(sources) => maybe_sources = Some(sources),
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Err(()) => log_css_error(location, "Invalid src in @font-face"),
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};
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},
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_ => {
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log_css_error(location, format!("Unsupported declaration {}", name).as_slice());
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}
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}
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}
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match DeclarationListParser::new(input, parser).run() {
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FontFaceRuleParser { family: Some(family), src: Some(src), .. } => {
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Ok(FontFaceRule {
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family: family,
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sources: src,
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})
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}
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}
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match (maybe_family, maybe_sources) {
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(Some(family), Some(sources)) => parent_rules.push(CSSRule::FontFace(FontFaceRule {
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family: family,
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sources: sources,
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})),
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(None, _) => log_css_error(rule.location, "@font-face without a font-family descriptor"),
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_ => log_css_error(rule.location, "@font-face without an src descriptor"),
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_ => Err(())
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}
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}
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fn parse_one_src(iter: ParserIter, base_url: &Url) -> Result<Source, ()> {
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let url = match iter.next() {
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struct FontFaceRuleParser<'a, 'b: 'a> {
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context: &'a ParserContext<'b>,
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family: Option<String>,
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src: Option<Vec<Source>>,
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}
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/// Default methods reject all at rules.
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impl<'a, 'b> AtRuleParser<(), ()> for FontFaceRuleParser<'a, 'b> {}
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impl<'a, 'b> DeclarationParser<()> for FontFaceRuleParser<'a, 'b> {
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fn parse_value(&mut self, name: &str, input: &mut Parser) -> Result<(), ()> {
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match_ignore_ascii_case! { name:
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"font-family" => {
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self.family = Some(try!(parse_one_non_generic_family_name(input)));
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Ok(())
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},
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"src" => {
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self.src = Some(try!(input.parse_comma_separated(|input| {
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parse_one_src(self.context, input)
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})));
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Ok(())
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}
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_ => Err(())
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}
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}
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}
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fn parse_one_non_generic_family_name(input: &mut Parser) -> Result<String, ()> {
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match parse_one_family(input) {
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Ok(FontFamily::FamilyName(name)) => Ok(name),
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_ => Err(())
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}
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}
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fn parse_one_src(context: &ParserContext, input: &mut Parser) -> Result<Source, ()> {
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let url = match input.next() {
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// Parsing url()
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Some(&URL(ref url)) => {
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UrlParser::new().base_url(base_url).parse(url.as_slice()).unwrap_or_else(
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Ok(Token::Url(url)) => {
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UrlParser::new().base_url(context.base_url).parse(url.as_slice()).unwrap_or_else(
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|_error| Url::parse("about:invalid").unwrap())
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},
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// Parsing local() with early return()
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Some(&Function(ref name, ref arguments)) => {
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if name.as_slice().eq_ignore_ascii_case("local") {
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let iter = &mut BufferedIter::new(arguments.as_slice().skip_whitespace());
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match parse_one_family(iter) {
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Ok(FamilyName(name)) => return Ok(Source::Local(name)),
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_ => return Err(())
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}
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// Parsing local() with early return
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Ok(Token::Function(name)) => {
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if name.eq_ignore_ascii_case("local") {
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return Ok(Source::Local(try!(input.parse_nested_block(|input| {
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parse_one_non_generic_family_name(input)
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}))))
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}
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return Err(())
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},
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@ -135,18 +126,14 @@ fn parse_one_src(iter: ParserIter, base_url: &Url) -> Result<Source, ()> {
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};
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// Parsing optional format()
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let format_hints = match iter.next() {
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Some(&Function(ref name, ref arguments)) => {
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if !name.as_slice().eq_ignore_ascii_case("format") {
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return Err(())
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}
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try!(parse_slice_comma_separated(arguments.as_slice(), parse_one_format))
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}
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Some(component_value) => {
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iter.push_back(component_value);
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vec![]
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}
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None => vec![],
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let format_hints = if input.try(|input| input.expect_function_matching("format")).is_ok() {
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try!(input.parse_nested_block(|input| {
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input.parse_comma_separated(|input| {
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Ok((try!(input.expect_string())).into_owned())
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})
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}))
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} else {
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vec![]
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};
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Ok(Source::Url(UrlSource {
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@ -154,17 +141,3 @@ fn parse_one_src(iter: ParserIter, base_url: &Url) -> Result<Source, ()> {
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format_hints: format_hints,
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}))
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}
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fn parse_one_format(iter: ParserIter) -> Result<String, ()> {
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match iter.next() {
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Some(&QuotedString(ref value)) => {
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if iter.next().is_none() {
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Ok(value.clone())
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} else {
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Err(())
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}
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}
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_ => Err(())
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}
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}
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