Auto merge of #13813 - nox:h5e, r=SimonSapin

Update html5ever to 0.8

<!-- Reviewable:start -->

This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/13813)

<!-- Reviewable:end -->

2 files changed, 54 insertions, 17 deletions

diff --git a/components/script/dom/servoparser/html.rs b/components/script/dom/servoparser/html.rs
index 26db7aa4b0c..91e4277f4c3 100644
--- a/components/script/dom/servoparser/html.rs
+++ b/components/script/dom/servoparser/html.rs
@@ -29,14 +29,14 @@ use html5ever::serialize::{AttrRef, Serializable, Serializer};
 use html5ever::serialize::TraversalScope;
 use html5ever::serialize::TraversalScope::{ChildrenOnly, IncludeNode};
 use html5ever::tendril::StrTendril;
-use html5ever::tokenizer::{Tokenizer as HtmlTokenizer, TokenizerOpts};
+use html5ever::tokenizer::{Tokenizer as H5ETokenizer, TokenizerOpts};
 use html5ever::tree_builder::{NextParserState, NodeOrText, QuirksMode};
 use html5ever::tree_builder::{TreeBuilder, TreeBuilderOpts, TreeSink};
 use msg::constellation_msg::PipelineId;
 use std::borrow::Cow;
 use std::io::{self, Write};
 use string_cache::QualName;
-use super::{LastChunkState, ServoParser, Sink, Tokenizer};
+use super::{HtmlTokenizer, LastChunkState, ServoParser, Sink, Tokenizer};
 use url::Url;
 
 fn insert(parent: &Node, reference_child: Option<&Node>, child: NodeOrText<JS<Node>>) {
@@ -276,10 +276,13 @@ pub fn parse_html(document: &Document,
     let parser = match context {
         ParseContext::Owner(owner) => {
             let tb = TreeBuilder::new(sink, options);
-            let tok = HtmlTokenizer::new(tb, Default::default());
+            let tok = H5ETokenizer::new(tb, Default::default());
 
             ServoParser::new(
-                document, owner, Tokenizer::HTML(tok), LastChunkState::NotReceived)
+                document,
+                owner,
+                Tokenizer::HTML(HtmlTokenizer::new(tok)),
+                LastChunkState::NotReceived)
         },
         ParseContext::Fragment(fc) => {
             let tb = TreeBuilder::new_for_fragment(
@@ -292,10 +295,13 @@ pub fn parse_html(document: &Document,
                 initial_state: Some(tb.tokenizer_state_for_context_elem()),
                 .. Default::default()
             };
-            let tok = HtmlTokenizer::new(tb, tok_options);
+            let tok = H5ETokenizer::new(tb, tok_options);
 
             ServoParser::new(
-                document, None, Tokenizer::HTML(tok), LastChunkState::Received)
+                document,
+                None,
+                Tokenizer::HTML(HtmlTokenizer::new(tok)),
+                LastChunkState::Received)
         }
     };
     parser.parse_chunk(String::from(input));
diff --git a/components/script/dom/servoparser/mod.rs b/components/script/dom/servoparser/mod.rs
index 8c57dffa8e1..b11dd46477c 100644
--- a/components/script/dom/servoparser/mod.rs
+++ b/components/script/dom/servoparser/mod.rs
@@ -20,7 +20,8 @@ use dom::htmlimageelement::HTMLImageElement;
 use dom::node::Node;
 use encoding::all::UTF_8;
 use encoding::types::{DecoderTrap, Encoding};
-use html5ever::tokenizer::Tokenizer as HtmlTokenizer;
+use html5ever::tokenizer::Tokenizer as H5ETokenizer;
+use html5ever::tokenizer::buffer_queue::BufferQueue;
 use html5ever::tree_builder::Tracer as HtmlTracer;
 use html5ever::tree_builder::TreeBuilder as HtmlTreeBuilder;
 use hyper::header::ContentType;
@@ -136,10 +137,6 @@ impl ServoParser {
         self.tokenizer.borrow_mut().set_plaintext_state()
     }
 
-    pub fn end_tokenizer(&self) {
-        self.tokenizer.borrow_mut().end()
-    }
-
     pub fn suspend(&self) {
         assert!(!self.suspended.get());
         self.suspended.set(true);
@@ -220,16 +217,50 @@ impl ServoParser {
 #[derive(HeapSizeOf)]
 #[must_root]
 enum Tokenizer {
-    HTML(
-        #[ignore_heap_size_of = "Defined in html5ever"]
-        HtmlTokenizer<HtmlTreeBuilder<JS<Node>, Sink>>
-    ),
+    HTML(HtmlTokenizer),
     XML(
         #[ignore_heap_size_of = "Defined in xml5ever"]
         XmlTokenizer<XmlTreeBuilder<JS<Node>, Sink>>
     ),
 }
 
+#[derive(HeapSizeOf)]
+#[must_root]
+struct HtmlTokenizer {
+    #[ignore_heap_size_of = "Defined in html5ever"]
+    inner: H5ETokenizer<HtmlTreeBuilder<JS<Node>, Sink>>,
+    #[ignore_heap_size_of = "Defined in html5ever"]
+    input_buffer: BufferQueue,
+}
+
+impl HtmlTokenizer {
+    #[allow(unrooted_must_root)]
+    fn new(inner: H5ETokenizer<HtmlTreeBuilder<JS<Node>, Sink>>) -> Self {
+        HtmlTokenizer {
+            inner: inner,
+            input_buffer: BufferQueue::new(),
+        }
+    }
+
+    fn feed(&mut self, input: String) {
+        self.input_buffer.push_back(input.into());
+        self.run();
+    }
+
+    fn run(&mut self) {
+        self.inner.feed(&mut self.input_buffer);
+    }
+
+    fn end(&mut self) {
+        assert!(self.input_buffer.is_empty());
+        self.inner.end();
+    }
+
+    fn set_plaintext_state(&mut self) {
+        self.inner.set_plaintext_state();
+    }
+}
+
 #[derive(JSTraceable, HeapSizeOf)]
 #[must_root]
 struct Sink {
@@ -240,7 +271,7 @@ struct Sink {
 impl Tokenizer {
     fn feed(&mut self, input: String) {
         match *self {
-            Tokenizer::HTML(ref mut tokenizer) => tokenizer.feed(input.into()),
+            Tokenizer::HTML(ref mut tokenizer) => tokenizer.feed(input),
             Tokenizer::XML(ref mut tokenizer) => tokenizer.feed(input.into()),
         }
     }
@@ -288,7 +319,7 @@ impl JSTraceable for Tokenizer {
                         node.trace(self.0);
                     }
                 }
-                let tree_builder = tokenizer.sink();
+                let tree_builder = tokenizer.inner.sink();
                 tree_builder.trace_handles(&tracer);
                 tree_builder.sink().trace(trc);
             },