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Ensure parsers initiated from DOMParser always complete. (#33056)

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* Ensure parsers initiated from DOMParser always complete.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Add test for parseFromString with async parser.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Add expected failure.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Josh Matthews 2024-08-15 19:45:00 -04:00 • committed by GitHub
parent 3cc91e655f
commit 69185c4af1
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GPG key ID: B5690EEEBB952194
5 changed files with 36 additions and 34 deletions
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43
components/script/dom/servoparser/mod.rs
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@ -128,12 +128,6 @@ pub struct ServoParser {
prefetch_input: DomRefCell<BufferQueue>,
}
#[derive(PartialEq)]
enum LastChunkState {
Received,
NotReceived,
}
pub struct ElementAttribute {
name: QualName,
value: DOMString,
@ -161,7 +155,6 @@ impl ServoParser {
ServoParser::new(
document,
Tokenizer::AsyncHtml(self::async_html::Tokenizer::new(document, url, None)),
LastChunkState::NotReceived,
ParserKind::Normal,
)
} else {
@ -173,14 +166,13 @@ impl ServoParser {
None,
ParsingAlgorithm::Normal,
)),
LastChunkState::NotReceived,
ParserKind::Normal,
)
};
// Set as the document's current parser and initialize with `input`, if given.
if let Some(input) = input {
parser.parse_string_chunk(String::from(input));
parser.parse_complete_string_chunk(String::from(input));
} else {
parser.document.set_current_parser(Some(&parser));
}
@ -239,10 +231,9 @@ impl ServoParser {
Some(fragment_context),
ParsingAlgorithm::Fragment,
)),
LastChunkState::Received,
ParserKind::Normal,
);
parser.parse_string_chunk(String::from(input));
parser.parse_complete_string_chunk(String::from(input));
// Step 14.
let root_element = document.GetDocumentElement().expect("no document element");
@ -260,7 +251,6 @@ impl ServoParser {
None,
ParsingAlgorithm::Normal,
)),
LastChunkState::NotReceived,
ParserKind::ScriptCreated,
);
*parser.bom_sniff.borrow_mut() = None;
@ -271,13 +261,12 @@ impl ServoParser {
let parser = ServoParser::new(
document,
Tokenizer::Xml(self::xml::Tokenizer::new(document, url)),
LastChunkState::NotReceived,
ParserKind::Normal,
);
// Set as the document's current parser and initialize with `input`, if given.
if let Some(input) = input {
parser.parse_string_chunk(String::from(input));
parser.parse_complete_string_chunk(String::from(input));
} else {
parser.document.set_current_parser(Some(&parser));
}
@ -421,12 +410,7 @@ impl ServoParser {
}
#[allow(crown::unrooted_must_root)]
fn new_inherited(
document: &Document,
tokenizer: Tokenizer,
last_chunk_state: LastChunkState,
kind: ParserKind,
) -> Self {
fn new_inherited(document: &Document, tokenizer: Tokenizer, kind: ParserKind) -> Self {
ServoParser {
reflector: Reflector::new(),
document: Dom::from_ref(document),
@ -435,7 +419,7 @@ impl ServoParser {
network_input: DomRefCell::new(BufferQueue::default()),
script_input: DomRefCell::new(BufferQueue::default()),
tokenizer: DomRefCell::new(tokenizer),
last_chunk_received: Cell::new(last_chunk_state == LastChunkState::Received),
last_chunk_received: Cell::new(false),
suspended: Default::default(),
script_nesting_level: Default::default(),
aborted: Default::default(),
@ -446,19 +430,9 @@ impl ServoParser {
}
#[allow(crown::unrooted_must_root)]
fn new(
document: &Document,
tokenizer: Tokenizer,
last_chunk_state: LastChunkState,
kind: ParserKind,
) -> DomRoot<Self> {
fn new(document: &Document, tokenizer: Tokenizer, kind: ParserKind) -> DomRoot<Self> {
reflect_dom_object(
Box::new(ServoParser::new_inherited(
document,
tokenizer,
last_chunk_state,
kind,
)),
Box::new(ServoParser::new_inherited(document, tokenizer, kind)),
document.window(),
)
}
@ -579,9 +553,10 @@ impl ServoParser {
}
}
fn parse_string_chunk(&self, input: String) {
fn parse_complete_string_chunk(&self, input: String) {
self.document.set_current_parser(Some(self));
self.push_string_input_chunk(input);
self.last_chunk_received.set(true);
if !self.suspended.get() {
self.parse_sync();
}