Auto merge of #8829 - jdm:xmlparser2, r=jdm

M1503 : Integrate XML Parser : First 2 of 4 Subsequent Steps

Rebase of #8746. Introduce and use an XML parser for text/xml network responses when loading web pages.

1 files changed, 97 insertions, 5 deletions

diff --git a/components/script/parse/xml.rs b/components/script/parse/xml.rs
index 907c1600f0c..30cd5138348 100644
--- a/components/script/parse/xml.rs
+++ b/components/script/parse/xml.rs
@@ -4,17 +4,109 @@
 
 #![allow(unrooted_must_root)]
 
+use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
+use dom::bindings::inheritance::Castable;
+use dom::bindings::js::{JS, Root, RootedReference};
+use dom::comment::Comment;
 use dom::document::Document;
+use dom::documenttype::DocumentType;
+use dom::element::{Element, ElementCreator};
+use dom::node::Node;
+use dom::processinginstruction::ProcessingInstruction;
+use dom::servoxmlparser;
+use dom::servoxmlparser::ServoXMLParser;
+use dom::text::Text;
+use msg::constellation_msg::PipelineId;
+use parse::Parser;
+use std::borrow::Cow;
+use string_cache::QualName;
+use tendril::StrTendril;
 use url::Url;
 use util::str::DOMString;
+use xml5ever::tokenizer::Attribute;
+use xml5ever::tree_builder::{NodeOrText, TreeSink};
+
+impl<'a> TreeSink for servoxmlparser::Sink {
+    type Handle = JS<Node>;
+
+    fn parse_error(&mut self, msg: Cow<'static, str>) {
+        debug!("Parse error: {}", msg);
+    }
+
+    fn get_document(&mut self) -> JS<Node> {
+        JS::from_ref(self.document.upcast())
+    }
+
+    fn elem_name(&self, target: &JS<Node>) -> QualName {
+        let elem = target.downcast::<Element>()
+            .expect("tried to get name of non-Element in XML parsing");
+        QualName {
+            ns: elem.namespace().clone(),
+            local: elem.local_name().clone(),
+        }
+    }
+
+    fn create_element(&mut self, name: QualName, attrs: Vec<Attribute>)
+            -> JS<Node> {
+        let elem = Element::create(name, None, &*self.document,
+                                   ElementCreator::ParserCreated);
+
+        for attr in attrs {
+            elem.set_attribute_from_parser(attr.name, DOMString::from(String::from(attr.value)), None);
+        }
+
+        JS::from_ref(elem.upcast())
+    }
+
+    fn create_comment(&mut self, text: StrTendril) -> JS<Node> {
+        let comment = Comment::new(DOMString::from(String::from(text)), &*self.document);
+        JS::from_ref(comment.upcast())
+    }
+
+    fn append(&mut self, parent: JS<Node>, child: NodeOrText<JS<Node>>) {
+        let child = match child {
+            NodeOrText::AppendNode(n) => Root::from_ref(&*n),
+            NodeOrText::AppendText(t) => {
+                let s: String = t.into();
+                let text = Text::new(DOMString::from(s), &self.document);
+                Root::upcast(text)
+            }
+        };
+        assert!(parent.AppendChild(child.r()).is_ok());
+    }
+
+    fn append_doctype_to_document(&mut self, name: StrTendril, public_id: StrTendril,
+                                  system_id: StrTendril) {
+        let doc = &*self.document;
+        let doctype = DocumentType::new(
+            DOMString::from(String::from(name)), Some(DOMString::from(String::from(public_id))),
+            Some(DOMString::from(String::from(system_id))), doc);
+        doc.upcast::<Node>().AppendChild(doctype.upcast()).expect("Appending failed");
+    }
+
+    fn create_pi(&mut self, target: StrTendril,  data: StrTendril) -> JS<Node> {
+        let doc = &*self.document;
+        let pi = ProcessingInstruction::new(
+            DOMString::from(String::from(target)), DOMString::from(String::from(data)),
+            doc);
+        JS::from_ref(pi.upcast())
+    }
+}
+
 
 pub enum ParseContext {
-    Owner(Option<i32>)
+    Owner(Option<PipelineId>)
 }
 
 
-pub fn parse_xml(_document: &Document,
-                 _input: DOMString,
-                 _url: Url,
-                 _context: ParseContext) {
+pub fn parse_xml(document: &Document,
+                 input: DOMString,
+                 url: Url,
+                 context: ParseContext) {
+    let parser = match context {
+        ParseContext::Owner(owner) =>
+            ServoXMLParser::new(Some(url), document, owner),
+    };
+    parser.parse_chunk(String::from(input));
 }
+