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Report unexpected attribute selector tokens (bug 1384216).

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This commit is contained in:
Josh Matthews 2017-08-28 17:20:17 -07:00
parent 8e20a6a110
commit 73e903ad3c
2 changed files with 28 additions and 36 deletions
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59
components/selectors/parser.rs
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@ -55,7 +55,7 @@ pub enum SelectorParseError<'i, T> {
NegationSelectorComponentNotLocalName,
EmptySelector,
NonSimpleSelectorInNegation,
UnexpectedTokenInAttributeSelector,
UnexpectedTokenInAttributeSelector(Token<'i>),
PseudoElementExpectedColon,
PseudoElementExpectedIdent,
UnsupportedPseudoClassOrElement(CowRcStr<'i>),
@ -1292,10 +1292,7 @@ fn parse_attribute_selector<'i, 't, P, E, Impl>(parser: &P, input: &mut CssParse
}
}
let operator;
let value;
let never_matches;
match input.next() {
let operator = match input.next() {
// [foo]
Err(_) => {
let local_name_lower = to_ascii_lowercase(&local_name).as_ref().into();
@ -1317,43 +1314,33 @@ fn parse_attribute_selector<'i, 't, P, E, Impl>(parser: &P, input: &mut CssParse
}
// [foo=bar]
Ok(&Token::Delim('=')) => {
value = input.expect_ident_or_string()?.clone();
never_matches = false;
operator = AttrSelectorOperator::Equal;
}
Ok(&Token::Delim('=')) => AttrSelectorOperator::Equal,
// [foo~=bar]
Ok(&Token::IncludeMatch) => {
value = input.expect_ident_or_string()?.clone();
never_matches = value.is_empty() || value.contains(SELECTOR_WHITESPACE);
operator = AttrSelectorOperator::Includes;
}
Ok(&Token::IncludeMatch) => AttrSelectorOperator::Includes,
// [foo|=bar]
Ok(&Token::DashMatch) => {
value = input.expect_ident_or_string()?.clone();
never_matches = false;
operator = AttrSelectorOperator::DashMatch;
}
Ok(&Token::DashMatch) => AttrSelectorOperator::DashMatch,
// [foo^=bar]
Ok(&Token::PrefixMatch) => {
value = input.expect_ident_or_string()?.clone();
never_matches = value.is_empty();
operator = AttrSelectorOperator::Prefix;
}
Ok(&Token::PrefixMatch) => AttrSelectorOperator::Prefix,
// [foo*=bar]
Ok(&Token::SubstringMatch) => {
value = input.expect_ident_or_string()?.clone();
never_matches = value.is_empty();
operator = AttrSelectorOperator::Substring;
}
Ok(&Token::SubstringMatch) => AttrSelectorOperator::Substring,
// [foo$=bar]
Ok(&Token::SuffixMatch) => {
value = input.expect_ident_or_string()?.clone();
never_matches = value.is_empty();
operator = AttrSelectorOperator::Suffix;
Ok(&Token::SuffixMatch) => AttrSelectorOperator::Suffix,
Ok(t) => return Err(SelectorParseError::UnexpectedTokenInAttributeSelector(t.clone()).into())
};
let value = input.expect_ident_or_string()?.clone();
let never_matches = match operator {
AttrSelectorOperator::Equal |
AttrSelectorOperator::DashMatch => false,
AttrSelectorOperator::Includes => {
value.is_empty() || value.contains(SELECTOR_WHITESPACE)
}
_ => return Err(SelectorParseError::UnexpectedTokenInAttributeSelector.into())
}
AttrSelectorOperator::Prefix |
AttrSelectorOperator::Substring |
AttrSelectorOperator::Suffix => value.is_empty()
};
let mut case_sensitivity = parse_attribute_flags(input)?;