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Update parser state only after rule is successfully parsed

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This commit is contained in:
Xidorn Quan 2017-08-18 15:27:39 +10:00
parent c1b196b7cb
commit c15ae3b6b4
5 changed files with 4 additions and 16 deletions
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8
components/style/stylesheets/rule_parser.rs
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@ -169,7 +169,6 @@ impl<'a, 'i> AtRuleParser<'i> for TopLevelRuleParser<'a> {
return Err(StyleParseError::UnexpectedImportRule.into())
}
self.state = State::Imports;
let url_string = input.expect_url_or_string()?.as_ref().to_owned();
let specified_url = SpecifiedUrl::parse_from_string(url_string, &self.context)?;
@ -187,6 +186,7 @@ impl<'a, 'i> AtRuleParser<'i> for TopLevelRuleParser<'a> {
media,
);
self.state = State::Imports;
return Ok(AtRuleType::WithoutBlock(CssRule::Import(import_rule)))
},
"namespace" => {
@ -195,7 +195,6 @@ impl<'a, 'i> AtRuleParser<'i> for TopLevelRuleParser<'a> {
self.had_hierarchy_error = true;
return Err(StyleParseError::UnexpectedNamespaceRule.into())
}
self.state = State::Namespaces;
let prefix_result = input.try(|i| i.expect_ident_cloned());
let maybe_namespace = match input.expect_url_or_string() {
@ -220,6 +219,7 @@ impl<'a, 'i> AtRuleParser<'i> for TopLevelRuleParser<'a> {
None
};
self.state = State::Namespaces;
return Ok(AtRuleType::WithoutBlock(CssRule::Namespace(Arc::new(
self.shared_lock.wrap(NamespaceRule {
prefix: opt_prefix,
@ -236,7 +236,6 @@ impl<'a, 'i> AtRuleParser<'i> for TopLevelRuleParser<'a> {
}
_ => {}
}
self.state = State::Body;
AtRuleParser::parse_prelude(&mut self.nested(), name, input)
}
@ -248,6 +247,7 @@ impl<'a, 'i> AtRuleParser<'i> for TopLevelRuleParser<'a> {
input: &mut Parser<'i, 't>
) -> Result<CssRule, ParseError<'i>> {
AtRuleParser::parse_block(&mut self.nested(), prelude, input)
.map(|rule| { self.state = State::Body; rule })
}
}
@ -266,7 +266,6 @@ impl<'a, 'i> QualifiedRuleParser<'i> for TopLevelRuleParser<'a> {
&mut self,
input: &mut Parser<'i, 't>,
) -> Result<QualifiedRuleParserPrelude, ParseError<'i>> {
self.state = State::Body;
QualifiedRuleParser::parse_prelude(&mut self.nested(), input)
}
@ -277,6 +276,7 @@ impl<'a, 'i> QualifiedRuleParser<'i> for TopLevelRuleParser<'a> {
input: &mut Parser<'i, 't>
) -> Result<CssRule, ParseError<'i>> {
QualifiedRuleParser::parse_block(&mut self.nested(), prelude, input)
.map(|result| { self.state = State::Body; result })
}
}