Use html5ever for HTML parsing

components/script/dom/servohtmlparser.rs

@@ -0,0 +1,105 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! The bulk of the HTML parser integration is in `script::parse::html`.
+//! This module is mostly about its interaction with DOM memory management.
+
+use dom::bindings::codegen::Bindings::ServoHTMLParserBinding;
+use dom::bindings::global;
+use dom::bindings::trace::JSTraceable;
+use dom::bindings::js::{JS, JSRef, Temporary};
+use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
+use dom::node::TrustedNodeAddress;
+use dom::document::Document;
+use parse::html::JSMessage;
+
+use std::default::Default;
+use std::cell::RefCell;
+use url::Url;
+use js::jsapi::JSTracer;
+use html5ever::tokenizer;
+use html5ever::tree_builder;
+use html5ever::tree_builder::{TreeBuilder, TreeBuilderOpts};
+
+#[must_root]
+#[jstraceable]
+pub struct Sink {
+    pub js_chan: Sender<JSMessage>,
+    pub base_url: Option<Url>,
+    pub document: JS<Document>,
+}
+
+pub type Tokenizer = tokenizer::Tokenizer<TreeBuilder<TrustedNodeAddress, Sink>>;
+
+// NB: JSTraceable is *not* auto-derived.
+// You must edit the impl below if you add fields!
+#[must_root]
+#[privatize]
+pub struct ServoHTMLParser {
+    reflector_: Reflector,
+    tokenizer: RefCell<Tokenizer>,
+}
+
+impl ServoHTMLParser {
+    #[allow(unrooted_must_root)]
+    pub fn new(js_chan: Sender<JSMessage>, base_url: Option<Url>, document: JSRef<Document>)
+            -> Temporary<ServoHTMLParser> {
+        let window = document.window().root();
+        let sink = Sink {
+            js_chan: js_chan,
+            base_url: base_url,
+            document: JS::from_rooted(document),
+        };
+
+        let tb = TreeBuilder::new(sink, TreeBuilderOpts {
+            ignore_missing_rules: true,
+            .. Default::default()
+        });
+
+        let tok = tokenizer::Tokenizer::new(tb, Default::default());
+
+        let parser = ServoHTMLParser {
+            reflector_: Reflector::new(),
+            tokenizer: RefCell::new(tok),
+        };
+
+        reflect_dom_object(box parser, &global::Window(*window), ServoHTMLParserBinding::Wrap)
+    }
+
+    #[inline]
+    pub fn tokenizer<'a>(&'a self) -> &'a RefCell<Tokenizer> {
+        &self.tokenizer
+    }
+}
+
+impl Reflectable for ServoHTMLParser {
+    fn reflector<'a>(&'a self) -> &'a Reflector {
+        &self.reflector_
+    }
+}
+
+struct Tracer {
+    trc: *mut JSTracer,
+}
+
+impl tree_builder::Tracer<TrustedNodeAddress> for Tracer {
+    fn trace_handle(&self, node: TrustedNodeAddress) {
+        node.trace(self.trc);
+    }
+}
+
+impl JSTraceable for ServoHTMLParser {
+    fn trace(&self, trc: *mut JSTracer) {
+        let tracer = Tracer {
+            trc: trc,
+        };
+        let tracer = &tracer as &tree_builder::Tracer<TrustedNodeAddress>;
+
+        self.reflector_.trace(trc);
+        let tokenizer = self.tokenizer.borrow();
+        let tree_builder = tokenizer.sink();
+        tree_builder.trace_handles(tracer);
+        tree_builder.sink().trace(trc);
+    }
+}