delete tree_builder, driver and serialize

1 files changed, 0 insertions, 1681 deletions

diff --git a/src/tree_builder/mod.rs b/src/tree_builder/mod.rs
deleted file mode 100644
index a6fa8bf..0000000
--- a/src/tree_builder/mod.rs
+++ /dev/null
@@ -1,1681 +0,0 @@
-// Copyright 2014-2017 The html5ever Project Developers. See the
-// COPYRIGHT file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![allow(warnings)]
-
-//! The HTML5 tree builder.
-
-pub use crate::interface::{create_element, ElementFlags, NextParserState, Tracer, TreeSink};
-pub use crate::interface::{AppendNode, AppendText, Attribute, NodeOrText};
-pub use crate::interface::{LimitedQuirks, NoQuirks, Quirks, QuirksMode};
-
-use self::types::*;
-
-use crate::tendril::StrTendril;
-use crate::{ExpandedName, LocalName, Namespace, QualName};
-
-use crate::tokenizer;
-use crate::tokenizer::states as tok_state;
-use crate::tokenizer::{Doctype, EndTag, StartTag, Tag, TokenSink, TokenSinkResult};
-
-use crate::util::str::is_ascii_whitespace;
-
-use std::borrow::Cow::Borrowed;
-use std::collections::VecDeque;
-use std::default::Default;
-use std::iter::{Enumerate, Rev};
-use std::mem::replace;
-use std::{fmt, slice};
-
-use crate::tokenizer::states::{RawData, RawKind};
-use crate::tree_builder::tag_sets::*;
-use crate::tree_builder::types::*;
-use crate::util::str::to_escaped_string;
-use log::{debug, log_enabled, warn, Level};
-use mac::{_tt_as_expr_hack, format_if, matches};
-
-pub use self::PushFlag::*;
-
-#[macro_use]
-mod tag_sets;
-
-mod data;
-mod types;
-
-include!(concat!(env!("OUT_DIR"), "/rules.rs"));
-
-/// Tree builder options, with an impl for Default.
-#[derive(Copy, Clone)]
-pub struct TreeBuilderOpts {
-    /// Report all parse errors described in the spec, at some
-    /// performance penalty?  Default: false
-    pub exact_errors: bool,
-
-    /// Is scripting enabled?
-    pub scripting_enabled: bool,
-
-    /// Is this an `iframe srcdoc` document?
-    pub iframe_srcdoc: bool,
-
-    /// Should we drop the DOCTYPE (if any) from the tree?
-    pub drop_doctype: bool,
-
-    /// Obsolete, ignored.
-    pub ignore_missing_rules: bool,
-
-    /// Initial TreeBuilder quirks mode. Default: NoQuirks
-    pub quirks_mode: QuirksMode,
-}
-
-impl Default for TreeBuilderOpts {
-    fn default() -> TreeBuilderOpts {
-        TreeBuilderOpts {
-            exact_errors: false,
-            scripting_enabled: true,
-            iframe_srcdoc: false,
-            drop_doctype: false,
-            ignore_missing_rules: false,
-            quirks_mode: NoQuirks,
-        }
-    }
-}
-
-/// The HTML tree builder.
-pub struct TreeBuilder<Handle, Sink> {
-    /// Options controlling the behavior of the tree builder.
-    opts: TreeBuilderOpts,
-
-    /// Consumer of tree modifications.
-    pub sink: Sink,
-
-    /// Insertion mode.
-    mode: InsertionMode,
-
-    /// Original insertion mode, used by Text and InTableText modes.
-    orig_mode: Option<InsertionMode>,
-
-    /// Stack of template insertion modes.
-    template_modes: Vec<InsertionMode>,
-
-    /// Pending table character tokens.
-    pending_table_text: Vec<(SplitStatus, StrTendril)>,
-
-    /// Quirks mode as set by the parser.
-    /// FIXME: can scripts etc. change this?
-    quirks_mode: QuirksMode,
-
-    /// The document node, which is created by the sink.
-    doc_handle: Handle,
-
-    /// Stack of open elements, most recently added at end.
-    open_elems: Vec<Handle>,
-
-    /// List of active formatting elements.
-    active_formatting: Vec<FormatEntry<Handle>>,
-
-    //§ the-element-pointers
-    /// Head element pointer.
-    head_elem: Option<Handle>,
-
-    /// Form element pointer.
-    form_elem: Option<Handle>,
-    //§ END
-    /// Frameset-ok flag.
-    frameset_ok: bool,
-
-    /// Ignore a following U+000A LINE FEED?
-    ignore_lf: bool,
-
-    /// Is foster parenting enabled?
-    foster_parenting: bool,
-
-    /// The context element for the fragment parsing algorithm.
-    context_elem: Option<Handle>,
-
-    /// Track current line
-    current_line: u64,
-    // WARNING: If you add new fields that contain Handles, you
-    // must add them to trace_handles() below to preserve memory
-    // safety!
-    //
-    // FIXME: Auto-generate the trace hooks like Servo does.
-}
-
-impl<Handle, Sink> TreeBuilder<Handle, Sink>
-where
-    Handle: Clone,
-    Sink: TreeSink<Handle = Handle>,
-{
-    /// Create a new tree builder which sends tree modifications to a particular `TreeSink`.
-    ///
-    /// The tree builder is also a `TokenSink`.
-    pub fn new(mut sink: Sink, opts: TreeBuilderOpts) -> TreeBuilder<Handle, Sink> {
-        let doc_handle = sink.get_document();
-        TreeBuilder {
-            opts: opts,
-            sink: sink,
-            mode: Initial,
-            orig_mode: None,
-            template_modes: vec![],
-            pending_table_text: vec![],
-            quirks_mode: opts.quirks_mode,
-            doc_handle: doc_handle,
-            open_elems: vec![],
-            active_formatting: vec![],
-            head_elem: None,
-            form_elem: None,
-            frameset_ok: true,
-            ignore_lf: false,
-            foster_parenting: false,
-            context_elem: None,
-            current_line: 1,
-        }
-    }
-
-    /// Create a new tree builder which sends tree modifications to a particular `TreeSink`.
-    /// This is for parsing fragments.
-    ///
-    /// The tree builder is also a `TokenSink`.
-    pub fn new_for_fragment(
-        mut sink: Sink,
-        context_elem: Handle,
-        form_elem: Option<Handle>,
-        opts: TreeBuilderOpts,
-    ) -> TreeBuilder<Handle, Sink> {
-        let doc_handle = sink.get_document();
-        let context_is_template = sink.elem_name(&context_elem) == expanded_name!(html "template");
-        let mut tb = TreeBuilder {
-            opts: opts,
-            sink: sink,
-            mode: Initial,
-            orig_mode: None,
-            template_modes: if context_is_template {
-                vec![InTemplate]
-            } else {
-                vec![]
-            },
-            pending_table_text: vec![],
-            quirks_mode: opts.quirks_mode,
-            doc_handle: doc_handle,
-            open_elems: vec![],
-            active_formatting: vec![],
-            head_elem: None,
-            form_elem: form_elem,
-            frameset_ok: true,
-            ignore_lf: false,
-            foster_parenting: false,
-            context_elem: Some(context_elem),
-            current_line: 1,
-        };
-
-        // https://html.spec.whatwg.org/multipage/#parsing-html-fragments
-        // 5. Let root be a new html element with no attributes.
-        // 6. Append the element root to the Document node created above.
-        // 7. Set up the parser's stack of open elements so that it contains just the single element root.
-        tb.create_root(vec![]);
-        // 10. Reset the parser's insertion mode appropriately.
-        tb.mode = tb.reset_insertion_mode();
-
-        tb
-    }
-
-    // https://html.spec.whatwg.org/multipage/#concept-frag-parse-context
-    // Step 4. Set the state of the HTML parser's tokenization stage as follows:
-    pub fn tokenizer_state_for_context_elem(&self) -> tok_state::State {
-        let elem = self.context_elem.as_ref().expect("no context element");
-        let name = match self.sink.elem_name(elem) {
-            ExpandedName {
-                ns: &ns!(html),
-                local,
-            } => local,
-            _ => return tok_state::Data,
-        };
-        match *name {
-            local_name!("title") | local_name!("textarea") => tok_state::RawData(tok_state::Rcdata),
-
-            local_name!("style") |
-            local_name!("xmp") |
-            local_name!("iframe") |
-            local_name!("noembed") |
-            local_name!("noframes") => tok_state::RawData(tok_state::Rawtext),
-
-            local_name!("script") => tok_state::RawData(tok_state::ScriptData),
-
-            local_name!("noscript") => {
-                if self.opts.scripting_enabled {
-                    tok_state::RawData(tok_state::Rawtext)
-                } else {
-                    tok_state::Data
-                }
-            },
-
-            local_name!("plaintext") => tok_state::Plaintext,
-
-            _ => tok_state::Data,
-        }
-    }
-
-    /// Call the `Tracer`'s `trace_handle` method on every `Handle` in the tree builder's
-    /// internal state.  This is intended to support garbage-collected DOMs.
-    pub fn trace_handles(&self, tracer: &Tracer<Handle = Handle>) {
-        tracer.trace_handle(&self.doc_handle);
-        for e in &self.open_elems {
-            tracer.trace_handle(e);
-        }
-        for e in &self.active_formatting {
-            match e {
-                &Element(ref h, _) => tracer.trace_handle(h),
-                _ => (),
-            }
-        }
-        self.head_elem.as_ref().map(|h| tracer.trace_handle(h));
-        self.form_elem.as_ref().map(|h| tracer.trace_handle(h));
-        self.context_elem.as_ref().map(|h| tracer.trace_handle(h));
-    }
-
-    #[allow(dead_code)]
-    fn dump_state(&self, label: String) {
-        println!("dump_state on {}", label);
-        print!("    open_elems:");
-        for node in self.open_elems.iter() {
-            let name = self.sink.elem_name(node);
-            match *name.ns {
-                ns!(html) => print!(" {}", name.local),
-                _ => panic!(),
-            }
-        }
-        println!("");
-        print!("    active_formatting:");
-        for entry in self.active_formatting.iter() {
-            match entry {
-                &Marker => print!(" Marker"),
-                &Element(ref h, _) => {
-                    let name = self.sink.elem_name(h);
-                    match *name.ns {
-                        ns!(html) => print!(" {}", name.local),
-                        _ => panic!(),
-                    }
-                },
-            }
-        }
-        println!("");
-    }
-
-    fn debug_step(&self, mode: InsertionMode, token: &Token) {
-        if log_enabled!(Level::Debug) {
-            debug!(
-                "processing {} in insertion mode {:?}",
-                to_escaped_string(token),
-                mode
-            );
-        }
-    }
-
-    fn process_to_completion(&mut self, mut token: Token) -> TokenSinkResult<Handle> {
-        // Queue of additional tokens yet to be processed.
-        // This stays empty in the common case where we don't split whitespace.
-        let mut more_tokens = VecDeque::new();
-
-        loop {
-            let should_have_acknowledged_self_closing_flag = matches!(
-                token,
-                TagToken(Tag {
-                    self_closing: true,
-                    kind: StartTag,
-                    ..
-                })
-            );
-            let result = if self.is_foreign(&token) {
-                self.step_foreign(token)
-            } else {
-                let mode = self.mode;
-                self.step(mode, token)
-            };
-            match result {
-                Done => {
-                    if should_have_acknowledged_self_closing_flag {
-                        self.sink
-                            .parse_error(Borrowed("Unacknowledged self-closing tag"));
-                    }
-                    token = unwrap_or_return!(
-                        more_tokens.pop_front(),
-                        tokenizer::TokenSinkResult::Continue
-                    );
-                },
-                DoneAckSelfClosing => {
-                    token = unwrap_or_return!(
-                        more_tokens.pop_front(),
-                        tokenizer::TokenSinkResult::Continue
-                    );
-                },
-                Reprocess(m, t) => {
-                    self.mode = m;
-                    token = t;
-                },
-                ReprocessForeign(t) => {
-                    token = t;
-                },
-                SplitWhitespace(mut buf) => {
-                    let p = buf.pop_front_char_run(is_ascii_whitespace);
-                    let (first, is_ws) = unwrap_or_return!(p, tokenizer::TokenSinkResult::Continue);
-                    let status = if is_ws { Whitespace } else { NotWhitespace };
-                    token = CharacterTokens(status, first);
-
-                    if buf.len32() > 0 {
-                        more_tokens.push_back(CharacterTokens(NotSplit, buf));
-                    }
-                },
-                Script(node) => {
-                    assert!(more_tokens.is_empty());
-                    return tokenizer::TokenSinkResult::Script(node);
-                },
-                ToPlaintext => {
-                    assert!(more_tokens.is_empty());
-                    return tokenizer::TokenSinkResult::Plaintext;
-                },
-                ToRawData(k) => {
-                    assert!(more_tokens.is_empty());
-                    return tokenizer::TokenSinkResult::RawData(k);
-                },
-            }
-        }
-    }
-
-    /// Are we parsing a HTML fragment?
-    pub fn is_fragment(&self) -> bool {
-        self.context_elem.is_some()
-    }
-
-    /// https://html.spec.whatwg.org/multipage/#appropriate-place-for-inserting-a-node
-    fn appropriate_place_for_insertion(
-        &mut self,
-        override_target: Option<Handle>,
-    ) -> InsertionPoint<Handle> {
-        use self::tag_sets::*;
-
-        declare_tag_set!(foster_target = "table" "tbody" "tfoot" "thead" "tr");
-        let target = override_target.unwrap_or_else(|| self.current_node().clone());
-        if !(self.foster_parenting && self.elem_in(&target, foster_target)) {
-            if self.html_elem_named(&target, local_name!("template")) {
-                // No foster parenting (inside template).
-                let contents = self.sink.get_template_contents(&target);
-                return LastChild(contents);
-            } else {
-                // No foster parenting (the common case).
-                return LastChild(target);
-            }
-        }
-
-        // Foster parenting
-        let mut iter = self.open_elems.iter().rev().peekable();
-        while let Some(elem) = iter.next() {
-            if self.html_elem_named(&elem, local_name!("template")) {
-                let contents = self.sink.get_template_contents(&elem);
-                return LastChild(contents);
-            } else if self.html_elem_named(&elem, local_name!("table")) {
-                return TableFosterParenting {
-                    element: elem.clone(),
-                    prev_element: (*iter.peek().unwrap()).clone(),
-                };
-            }
-        }
-        let html_elem = self.html_elem();
-        LastChild(html_elem.clone())
-    }
-
-    fn insert_at(&mut self, insertion_point: InsertionPoint<Handle>, child: NodeOrText<Handle>) {
-        match insertion_point {
-            LastChild(parent) => self.sink.append(&parent, child),
-            BeforeSibling(sibling) => self.sink.append_before_sibling(&sibling, child),
-            TableFosterParenting {
-                element,
-                prev_element,
-            } => self
-                .sink
-                .append_based_on_parent_node(&element, &prev_element, child),
-        }
-    }
-}
-
-impl<Handle, Sink> TokenSink for TreeBuilder<Handle, Sink>
-where
-    Handle: Clone,
-    Sink: TreeSink<Handle = Handle>,
-{
-    type Handle = Handle;
-
-    fn process_token(
-        &mut self,
-        token: tokenizer::Token,
-        line_number: u64,
-    ) -> TokenSinkResult<Handle> {
-        if line_number != self.current_line {
-            self.sink.set_current_line(line_number);
-        }
-        let ignore_lf = replace(&mut self.ignore_lf, false);
-
-        // Handle `ParseError` and `DoctypeToken`; convert everything else to the local `Token` type.
-        let token = match token {
-            tokenizer::ParseError(e) => {
-                self.sink.parse_error(e);
-                return tokenizer::TokenSinkResult::Continue;
-            },
-
-            tokenizer::DoctypeToken(dt) => {
-                if self.mode == Initial {
-                    let (err, quirk) = data::doctype_error_and_quirks(&dt, self.opts.iframe_srcdoc);
-                    if err {
-                        self.sink.parse_error(format_if!(
-                            self.opts.exact_errors,
-                            "Bad DOCTYPE",
-                            "Bad DOCTYPE: {:?}",
-                            dt
-                        ));
-                    }
-                    let Doctype {
-                        name,
-                        public_id,
-                        system_id,
-                        force_quirks: _,
-                    } = dt;
-                    if !self.opts.drop_doctype {
-                        self.sink.append_doctype_to_document(
-                            name.unwrap_or(StrTendril::new()),
-                            public_id.unwrap_or(StrTendril::new()),
-                            system_id.unwrap_or(StrTendril::new()),
-                        );
-                    }
-                    self.set_quirks_mode(quirk);
-
-                    self.mode = BeforeHtml;
-                    return tokenizer::TokenSinkResult::Continue;
-                } else {
-                    self.sink.parse_error(format_if!(
-                        self.opts.exact_errors,
-                        "DOCTYPE in body",
-                        "DOCTYPE in insertion mode {:?}",
-                        self.mode
-                    ));
-                    return tokenizer::TokenSinkResult::Continue;
-                }
-            },
-
-            tokenizer::TagToken(x) => TagToken(x),
-            tokenizer::CommentToken(x) => CommentToken(x),
-            tokenizer::NullCharacterToken => NullCharacterToken,
-            tokenizer::EOFToken => EOFToken,
-
-            tokenizer::CharacterTokens(mut x) => {
-                if ignore_lf && x.starts_with("\n") {
-                    x.pop_front(1);
-                }
-                if x.is_empty() {
-                    return tokenizer::TokenSinkResult::Continue;
-                }
-                CharacterTokens(NotSplit, x)
-            },
-        };
-
-        self.process_to_completion(token)
-    }
-
-    fn end(&mut self) {
-        for elem in self.open_elems.drain(..).rev() {
-            self.sink.pop(&elem);
-        }
-    }
-
-    fn adjusted_current_node_present_but_not_in_html_namespace(&self) -> bool {
-        !self.open_elems.is_empty() &&
-            self.sink.elem_name(self.adjusted_current_node()).ns != &ns!(html)
-    }
-}
-
-pub fn html_elem<Handle>(open_elems: &[Handle]) -> &Handle {
-    &open_elems[0]
-}
-
-pub struct ActiveFormattingIter<'a, Handle: 'a> {
-    iter: Rev<Enumerate<slice::Iter<'a, FormatEntry<Handle>>>>,
-}
-
-impl<'a, Handle> Iterator for ActiveFormattingIter<'a, Handle> {
-    type Item = (usize, &'a Handle, &'a Tag);
-    fn next(&mut self) -> Option<(usize, &'a Handle, &'a Tag)> {
-        match self.iter.next() {
-            None | Some((_, &Marker)) => None,
-            Some((i, &Element(ref h, ref t))) => Some((i, h, t)),
-        }
-    }
-}
-
-pub enum PushFlag {
-    Push,
-    NoPush,
-}
-
-enum Bookmark<Handle> {
-    Replace(Handle),
-    InsertAfter(Handle),
-}
-
-macro_rules! qualname {
-    ("", $local:tt) => {
-        QualName {
-            prefix: None,
-            ns: ns!(),
-            local: local_name!($local),
-        }
-    };
-    ($prefix: tt $ns:tt $local:tt) => {
-        QualName {
-            prefix: Some(namespace_prefix!($prefix)),
-            ns: ns!($ns),
-            local: local_name!($local),
-        }
-    };
-}
-
-#[doc(hidden)]
-impl<Handle, Sink> TreeBuilder<Handle, Sink>
-where
-    Handle: Clone,
-    Sink: TreeSink<Handle = Handle>,
-{
-    fn unexpected<T: fmt::Debug>(&mut self, _thing: &T) -> ProcessResult<Handle> {
-        self.sink.parse_error(format_if!(
-            self.opts.exact_errors,
-            "Unexpected token",
-            "Unexpected token {} in insertion mode {:?}",
-            to_escaped_string(_thing),
-            self.mode
-        ));
-        Done
-    }
-
-    fn assert_named(&mut self, node: &Handle, name: LocalName) {
-        assert!(self.html_elem_named(&node, name));
-    }
-
-    /// Iterate over the active formatting elements (with index in the list) from the end
-    /// to the last marker, or the beginning if there are no markers.
-    fn active_formatting_end_to_marker<'a>(&'a self) -> ActiveFormattingIter<'a, Handle> {
-        ActiveFormattingIter {
-            iter: self.active_formatting.iter().enumerate().rev(),
-        }
-    }
-
-    fn position_in_active_formatting(&self, element: &Handle) -> Option<usize> {
-        self.active_formatting.iter().position(|n| match n {
-            &Marker => false,
-            &Element(ref handle, _) => self.sink.same_node(handle, element),
-        })
-    }
-
-    fn set_quirks_mode(&mut self, mode: QuirksMode) {
-        self.quirks_mode = mode;
-        self.sink.set_quirks_mode(mode);
-    }
-
-    fn stop_parsing(&mut self) -> ProcessResult<Handle> {
-        Done
-    }
-
-    //§ parsing-elements-that-contain-only-text
-    // Switch to `Text` insertion mode, save the old mode, and
-    // switch the tokenizer to a raw-data state.
-    // The latter only takes effect after the current / next
-    // `process_token` of a start tag returns!
-    fn to_raw_text_mode(&mut self, k: RawKind) -> ProcessResult<Handle> {
-        self.orig_mode = Some(self.mode);
-        self.mode = Text;
-        ToRawData(k)
-    }
-
-    // The generic raw text / RCDATA parsing algorithm.
-    fn parse_raw_data(&mut self, tag: Tag, k: RawKind) -> ProcessResult<Handle> {
-        self.insert_element_for(tag);
-        self.to_raw_text_mode(k)
-    }
-    //§ END
-
-    fn current_node(&self) -> &Handle {
-        self.open_elems.last().expect("no current element")
-    }
-
-    fn adjusted_current_node(&self) -> &Handle {
-        if self.open_elems.len() == 1 {
-            if let Some(ctx) = self.context_elem.as_ref() {
-                return ctx;
-            }
-        }
-        self.current_node()
-    }
-
-    fn current_node_in<TagSet>(&self, set: TagSet) -> bool
-    where
-        TagSet: Fn(ExpandedName) -> bool,
-    {
-        set(self.sink.elem_name(self.current_node()))
-    }
-
-    // Insert at the "appropriate place for inserting a node".
-    fn insert_appropriately(&mut self, child: NodeOrText<Handle>, override_target: Option<Handle>) {
-        let insertion_point = self.appropriate_place_for_insertion(override_target);
-        self.insert_at(insertion_point, child);
-    }
-
-    fn adoption_agency(&mut self, subject: LocalName) {
-        // 1.
-        if self.current_node_named(subject.clone()) {
-            if self
-                .position_in_active_formatting(self.current_node())
-                .is_none()
-            {
-                self.pop();
-                return;
-            }
-        }
-
-        // 2. 3. 4.
-        for _ in 0..8 {
-            // 5.
-            let (fmt_elem_index, fmt_elem, fmt_elem_tag) = unwrap_or_return!(
-                // We clone the Handle and Tag so they don't cause an immutable borrow of self.
-                self.active_formatting_end_to_marker()
-                    .filter(|&(_, _, tag)| tag.name == subject)
-                    .next()
-                    .map(|(i, h, t)| (i, h.clone(), t.clone())),
-                {
-                    self.process_end_tag_in_body(Tag {
-                        kind: EndTag,
-                        name: subject,
-                        self_closing: false,
-                        attrs: vec![],
-                    });
-                }
-            );
-
-            let fmt_elem_stack_index = unwrap_or_return!(
-                self.open_elems
-                    .iter()
-                    .rposition(|n| self.sink.same_node(n, &fmt_elem)),
-                {
-                    self.sink
-                        .parse_error(Borrowed("Formatting element not open"));
-                    self.active_formatting.remove(fmt_elem_index);
-                }
-            );
-
-            // 7.
-            if !self.in_scope(default_scope, |n| self.sink.same_node(&n, &fmt_elem)) {
-                self.sink
-                    .parse_error(Borrowed("Formatting element not in scope"));
-                return;
-            }
-
-            // 8.
-            if !self.sink.same_node(self.current_node(), &fmt_elem) {
-                self.sink
-                    .parse_error(Borrowed("Formatting element not current node"));
-            }
-
-            // 9.
-            let (furthest_block_index, furthest_block) = unwrap_or_return!(
-                self.open_elems
-                    .iter()
-                    .enumerate()
-                    .skip(fmt_elem_stack_index)
-                    .filter(|&(_, open_element)| self.elem_in(open_element, special_tag))
-                    .next()
-                    .map(|(i, h)| (i, h.clone())),
-                // 10.
-                {
-                    self.open_elems.truncate(fmt_elem_stack_index);
-                    self.active_formatting.remove(fmt_elem_index);
-                }
-            );
-
-            // 11.
-            let common_ancestor = self.open_elems[fmt_elem_stack_index - 1].clone();
-
-            // 12.
-            let mut bookmark = Bookmark::Replace(fmt_elem.clone());
-
-            // 13.
-            let mut node;
-            let mut node_index = furthest_block_index;
-            let mut last_node = furthest_block.clone();
-
-            // 13.1.
-            let mut inner_counter = 0;
-            loop {
-                // 13.2.
-                inner_counter += 1;
-
-                // 13.3.
-                node_index -= 1;
-                node = self.open_elems[node_index].clone();
-
-                // 13.4.
-                if self.sink.same_node(&node, &fmt_elem) {
-                    break;
-                }
-
-                // 13.5.
-                if inner_counter > 3 {
-                    self.position_in_active_formatting(&node)
-                        .map(|position| self.active_formatting.remove(position));
-                    self.open_elems.remove(node_index);
-                    continue;
-                }
-
-                let node_formatting_index = unwrap_or_else!(
-                    self.position_in_active_formatting(&node),
-                    // 13.6.
-                    {
-                        self.open_elems.remove(node_index);
-                        continue;
-                    }
-                );
-
-                // 13.7.
-                let tag = match self.active_formatting[node_formatting_index] {
-                    Element(ref h, ref t) => {
-                        assert!(self.sink.same_node(h, &node));
-                        t.clone()
-                    },
-                    Marker => panic!("Found marker during adoption agency"),
-                };
-                // FIXME: Is there a way to avoid cloning the attributes twice here (once on their
-                // own, once as part of t.clone() above)?
-                let new_element = create_element(
-                    &mut self.sink,
-                    QualName::new(None, ns!(html), tag.name.clone()),
-                    tag.attrs.clone(),
-                );
-                self.open_elems[node_index] = new_element.clone();
-                self.active_formatting[node_formatting_index] = Element(new_element.clone(), tag);
-                node = new_element;
-
-                // 13.8.
-                if self.sink.same_node(&last_node, &furthest_block) {
-                    bookmark = Bookmark::InsertAfter(node.clone());
-                }
-
-                // 13.9.
-                self.sink.remove_from_parent(&last_node);
-                self.sink.append(&node, AppendNode(last_node.clone()));
-
-                // 13.10.
-                last_node = node.clone();
-
-                // 13.11.
-            }
-
-            // 14.
-            self.sink.remove_from_parent(&last_node);
-            self.insert_appropriately(AppendNode(last_node.clone()), Some(common_ancestor));
-
-            // 15.
-            // FIXME: Is there a way to avoid cloning the attributes twice here (once on their own,
-            // once as part of t.clone() above)?
-            let new_element = create_element(
-                &mut self.sink,
-                QualName::new(None, ns!(html), fmt_elem_tag.name.clone()),
-                fmt_elem_tag.attrs.clone(),
-            );
-            let new_entry = Element(new_element.clone(), fmt_elem_tag);
-
-            // 16.
-            self.sink.reparent_children(&furthest_block, &new_element);
-
-            // 17.
-            self.sink
-                .append(&furthest_block, AppendNode(new_element.clone()));
-
-            // 18.
-            // FIXME: We could probably get rid of the position_in_active_formatting() calls here
-            // if we had a more clever Bookmark representation.
-            match bookmark {
-                Bookmark::Replace(to_replace) => {
-                    let index = self
-                        .position_in_active_formatting(&to_replace)
-                        .expect("bookmark not found in active formatting elements");
-                    self.active_formatting[index] = new_entry;
-                },
-                Bookmark::InsertAfter(previous) => {
-                    let index = self
-                        .position_in_active_formatting(&previous)
-                        .expect("bookmark not found in active formatting elements") +
-                        1;
-                    self.active_formatting.insert(index, new_entry);
-                    let old_index = self
-                        .position_in_active_formatting(&fmt_elem)
-                        .expect("formatting element not found in active formatting elements");
-                    self.active_formatting.remove(old_index);
-                },
-            }
-
-            // 19.
-            self.remove_from_stack(&fmt_elem);
-            let new_furthest_block_index = self
-                .open_elems
-                .iter()
-                .position(|n| self.sink.same_node(n, &furthest_block))
-                .expect("furthest block missing from open element stack");
-            self.open_elems
-                .insert(new_furthest_block_index + 1, new_element);
-
-            // 20.
-        }
-    }
-
-    fn push(&mut self, elem: &Handle) {
-        self.open_elems.push(elem.clone());
-    }
-
-    fn pop(&mut self) -> Handle {
-        let elem = self.open_elems.pop().expect("no current element");
-        self.sink.pop(&elem);
-        elem
-    }
-
-    fn remove_from_stack(&mut self, elem: &Handle) {
-        let sink = &mut self.sink;
-        let position = self
-            .open_elems
-            .iter()
-            .rposition(|x| sink.same_node(elem, &x));
-        if let Some(position) = position {
-            self.open_elems.remove(position);
-            sink.pop(elem);
-        }
-    }
-
-    fn is_marker_or_open(&self, entry: &FormatEntry<Handle>) -> bool {
-        match *entry {
-            Marker => true,
-            Element(ref node, _) => self
-                .open_elems
-                .iter()
-                .rev()
-                .any(|n| self.sink.same_node(&n, &node)),
-        }
-    }
-
-    /// Reconstruct the active formatting elements.
-    fn reconstruct_formatting(&mut self) {
-        {
-            let last = unwrap_or_return!(self.active_formatting.last(), ());
-            if self.is_marker_or_open(last) {
-                return;
-            }
-        }
-
-        let mut entry_index = self.active_formatting.len() - 1;
-        loop {
-            if entry_index == 0 {
-                break;
-            }
-            entry_index -= 1;
-            if self.is_marker_or_open(&self.active_formatting[entry_index]) {
-                entry_index += 1;
-                break;
-            }
-        }
-
-        loop {
-            let tag = match self.active_formatting[entry_index] {
-                Element(_, ref t) => t.clone(),
-                Marker => panic!("Found marker during formatting element reconstruction"),
-            };
-
-            // FIXME: Is there a way to avoid cloning the attributes twice here (once on their own,
-            // once as part of t.clone() above)?
-            let new_element =
-                self.insert_element(Push, ns!(html), tag.name.clone(), tag.attrs.clone());
-            self.active_formatting[entry_index] = Element(new_element, tag);
-            if entry_index == self.active_formatting.len() - 1 {
-                break;
-            }
-            entry_index += 1;
-        }
-    }
-
-    /// Get the first element on the stack, which will be the <html> element.
-    fn html_elem(&self) -> &Handle {
-        &self.open_elems[0]
-    }
-
-    /// Get the second element on the stack, if it's a HTML body element.
-    fn body_elem(&self) -> Option<&Handle> {
-        if self.open_elems.len() <= 1 {
-            return None;
-        }
-
-        let node = &self.open_elems[1];
-        if self.html_elem_named(node, local_name!("body")) {
-            Some(node)
-        } else {
-            None
-        }
-    }
-
-    /// Signal an error depending on the state of the stack of open elements at
-    /// the end of the body.
-    fn check_body_end(&mut self) {
-        declare_tag_set!(body_end_ok =
-            "dd" "dt" "li" "optgroup" "option" "p" "rp" "rt" "tbody" "td" "tfoot" "th"
-            "thead" "tr" "body" "html");
-
-        for elem in self.open_elems.iter() {
-            let error;
-            {
-                let name = self.sink.elem_name(elem);
-                if body_end_ok(name) {
-                    continue;
-                }
-                error = format_if!(
-                    self.opts.exact_errors,
-                    "Unexpected open tag at end of body",
-                    "Unexpected open tag {:?} at end of body",
-                    name
-                );
-            }
-            self.sink.parse_error(error);
-            // FIXME: Do we keep checking after finding one bad tag?
-            // The spec suggests not.
-            return;
-        }
-    }
-
-    fn in_scope<TagSet, Pred>(&self, scope: TagSet, pred: Pred) -> bool
-    where
-        TagSet: Fn(ExpandedName) -> bool,
-        Pred: Fn(Handle) -> bool,
-    {
-        for node in self.open_elems.iter().rev() {
-            if pred(node.clone()) {
-                return true;
-            }
-            if scope(self.sink.elem_name(node)) {
-                return false;
-            }
-        }
-
-        // supposed to be impossible, because <html> is always in scope
-
-        false
-    }
-
-    fn elem_in<TagSet>(&self, elem: &Handle, set: TagSet) -> bool
-    where
-        TagSet: Fn(ExpandedName) -> bool,
-    {
-        set(self.sink.elem_name(elem))
-    }
-
-    fn html_elem_named(&self, elem: &Handle, name: LocalName) -> bool {
-        let expanded = self.sink.elem_name(elem);
-        *expanded.ns == ns!(html) && *expanded.local == name
-    }
-
-    fn in_html_elem_named(&self, name: LocalName) -> bool {
-        self.open_elems
-            .iter()
-            .any(|elem| self.html_elem_named(elem, name.clone()))
-    }
-
-    fn current_node_named(&self, name: LocalName) -> bool {
-        self.html_elem_named(self.current_node(), name)
-    }
-
-    fn in_scope_named<TagSet>(&self, scope: TagSet, name: LocalName) -> bool
-    where
-        TagSet: Fn(ExpandedName) -> bool,
-    {
-        self.in_scope(scope, |elem| self.html_elem_named(&elem, name.clone()))
-    }
-
-    //§ closing-elements-that-have-implied-end-tags
-    fn generate_implied_end<TagSet>(&mut self, set: TagSet)
-    where
-        TagSet: Fn(ExpandedName) -> bool,
-    {
-        loop {
-            {
-                let elem = unwrap_or_return!(self.open_elems.last(), ());
-                let nsname = self.sink.elem_name(elem);
-                if !set(nsname) {
-                    return;
-                }
-            }
-            self.pop();
-        }
-    }
-
-    fn generate_implied_end_except(&mut self, except: LocalName) {
-        self.generate_implied_end(|p| {
-            if *p.ns == ns!(html) && *p.local == except {
-                false
-            } else {
-                cursory_implied_end(p)
-            }
-        });
-    }
-    //§ END
-
-    // Pop elements until the current element is in the set.
-    fn pop_until_current<TagSet>(&mut self, pred: TagSet)
-    where
-        TagSet: Fn(ExpandedName) -> bool,
-    {
-        loop {
-            if self.current_node_in(|x| pred(x)) {
-                break;
-            }
-            self.open_elems.pop();
-        }
-    }
-
-    // Pop elements until an element from the set has been popped.  Returns the
-    // number of elements popped.
-    fn pop_until<P>(&mut self, pred: P) -> usize
-    where
-        P: Fn(ExpandedName) -> bool,
-    {
-        let mut n = 0;
-        loop {
-            n += 1;
-            match self.open_elems.pop() {
-                None => break,
-                Some(elem) => {
-                    if pred(self.sink.elem_name(&elem)) {
-                        break;
-                    }
-                },
-            }
-        }
-        n
-    }
-
-    fn pop_until_named(&mut self, name: LocalName) -> usize {
-        self.pop_until(|p| *p.ns == ns!(html) && *p.local == name)
-    }
-
-    // Pop elements until one with the specified name has been popped.
-    // Signal an error if it was not the first one.
-    fn expect_to_close(&mut self, name: LocalName) {
-        if self.pop_until_named(name.clone()) != 1 {
-            self.sink.parse_error(format_if!(
-                self.opts.exact_errors,
-                "Unexpected open element",
-                "Unexpected open element while closing {:?}",
-                name
-            ));
-        }
-    }
-
-    fn close_p_element(&mut self) {
-        declare_tag_set!(implied = [cursory_implied_end] - "p");
-        self.generate_implied_end(implied);
-        self.expect_to_close(local_name!("p"));
-    }
-
-    fn close_p_element_in_button_scope(&mut self) {
-        if self.in_scope_named(button_scope, local_name!("p")) {
-            self.close_p_element();
-        }
-    }
-
-    // Check <input> tags for type=hidden
-    fn is_type_hidden(&self, tag: &Tag) -> bool {
-        match tag
-            .attrs
-            .iter()
-            .find(|&at| at.name.expanded() == expanded_name!("", "type"))
-        {
-            None => false,
-            Some(at) => (&*at.value).eq_ignore_ascii_case("hidden"),
-        }
-    }
-
-    fn foster_parent_in_body(&mut self, token: Token) -> ProcessResult<Handle> {
-        warn!("foster parenting not implemented");
-        self.foster_parenting = true;
-        let res = self.step(InBody, token);
-        // FIXME: what if res is Reprocess?
-        self.foster_parenting = false;
-        res
-    }
-
-    fn process_chars_in_table(&mut self, token: Token) -> ProcessResult<Handle> {
-        declare_tag_set!(table_outer = "table" "tbody" "tfoot" "thead" "tr");
-        if self.current_node_in(table_outer) {
-            assert!(self.pending_table_text.is_empty());
-            self.orig_mode = Some(self.mode);
-            Reprocess(InTableText, token)
-        } else {
-            self.sink.parse_error(format_if!(
-                self.opts.exact_errors,
-                "Unexpected characters in table",
-                "Unexpected characters {} in table",
-                to_escaped_string(&token)
-            ));
-            self.foster_parent_in_body(token)
-        }
-    }
-
-    // https://html.spec.whatwg.org/multipage/#reset-the-insertion-mode-appropriately
-    fn reset_insertion_mode(&mut self) -> InsertionMode {
-        for (i, mut node) in self.open_elems.iter().enumerate().rev() {
-            let last = i == 0usize;
-            if let (true, Some(ctx)) = (last, self.context_elem.as_ref()) {
-                node = ctx;
-            }
-            let name = match self.sink.elem_name(node) {
-                ExpandedName {
-                    ns: &ns!(html),
-                    local,
-                } => local,
-                _ => continue,
-            };
-            match *name {
-                local_name!("select") => {
-                    for ancestor in self.open_elems[0..i].iter().rev() {
-                        if self.html_elem_named(ancestor, local_name!("template")) {
-                            return InSelect;
-                        } else if self.html_elem_named(ancestor, local_name!("table")) {
-                            return InSelectInTable;
-                        }
-                    }
-                    return InSelect;
-                },
-                local_name!("td") | local_name!("th") => {
-                    if !last {
-                        return InCell;
-                    }
-                },
-                local_name!("tr") => return InRow,
-                local_name!("tbody") | local_name!("thead") | local_name!("tfoot") => {
-                    return InTableBody;
-                },
-                local_name!("caption") => return InCaption,
-                local_name!("colgroup") => return InColumnGroup,
-                local_name!("table") => return InTable,
-                local_name!("template") => return *self.template_modes.last().unwrap(),
-                local_name!("head") => {
-                    if !last {
-                        return InHead;
-                    }
-                },
-                local_name!("body") => return InBody,
-                local_name!("frameset") => return InFrameset,
-                local_name!("html") => match self.head_elem {
-                    None => return BeforeHead,
-                    Some(_) => return AfterHead,
-                },
-
-                _ => (),
-            }
-        }
-        InBody
-    }
-
-    fn close_the_cell(&mut self) {
-        self.generate_implied_end(cursory_implied_end);
-        if self.pop_until(td_th) != 1 {
-            self.sink
-                .parse_error(Borrowed("expected to close <td> or <th> with cell"));
-        }
-        self.clear_active_formatting_to_marker();
-    }
-
-    fn append_text(&mut self, text: StrTendril) -> ProcessResult<Handle> {
-        self.insert_appropriately(AppendText(text), None);
-        Done
-    }
-
-    fn append_comment(&mut self, text: StrTendril) -> ProcessResult<Handle> {
-        let comment = self.sink.create_comment(text);
-        self.insert_appropriately(AppendNode(comment), None);
-        Done
-    }
-
-    fn append_comment_to_doc(&mut self, text: StrTendril) -> ProcessResult<Handle> {
-        let comment = self.sink.create_comment(text);
-        self.sink.append(&self.doc_handle, AppendNode(comment));
-        Done
-    }
-
-    fn append_comment_to_html(&mut self, text: StrTendril) -> ProcessResult<Handle> {
-        let target = html_elem(&self.open_elems);
-        let comment = self.sink.create_comment(text);
-        self.sink.append(target, AppendNode(comment));
-        Done
-    }
-
-    //§ creating-and-inserting-nodes
-    fn create_root(&mut self, attrs: Vec<Attribute>) {
-        let elem = create_element(
-            &mut self.sink,
-            QualName::new(None, ns!(html), local_name!("html")),
-            attrs,
-        );
-        self.push(&elem);
-        self.sink.append(&self.doc_handle, AppendNode(elem));
-        // FIXME: application cache selection algorithm
-    }
-
-    // https://html.spec.whatwg.org/multipage/#create-an-element-for-the-token
-    fn insert_element(
-        &mut self,
-        push: PushFlag,
-        ns: Namespace,
-        name: LocalName,
-        attrs: Vec<Attribute>,
-    ) -> Handle {
-        declare_tag_set!(form_associatable =
-            "button" "fieldset" "input" "object"
-            "output" "select" "textarea" "img");
-
-        declare_tag_set!(listed = [form_associatable] - "img");
-
-        // Step 7.
-        let qname = QualName::new(None, ns, name);
-        let elem = create_element(&mut self.sink, qname.clone(), attrs.clone());
-
-        let insertion_point = self.appropriate_place_for_insertion(None);
-        let (node1, node2) = match insertion_point {
-            LastChild(ref p) | BeforeSibling(ref p) => (p.clone(), None),
-            TableFosterParenting {
-                ref element,
-                ref prev_element,
-            } => (element.clone(), Some(prev_element.clone())),
-        };
-
-        // Step 12.
-        if form_associatable(qname.expanded()) &&
-            self.form_elem.is_some() &&
-            !self.in_html_elem_named(local_name!("template")) &&
-            !(listed(qname.expanded()) &&
-                attrs
-                    .iter()
-                    .any(|a| a.name.expanded() == expanded_name!("", "form")))
-        {
-            let form = self.form_elem.as_ref().unwrap().clone();
-            let node2 = match node2 {
-                Some(ref n) => Some(n),
-                None => None,
-            };
-            self.sink.associate_with_form(&elem, &form, (&node1, node2));
-        }
-
-        self.insert_at(insertion_point, AppendNode(elem.clone()));
-
-        match push {
-            Push => self.push(&elem),
-            NoPush => (),
-        }
-        // FIXME: Remove from the stack if we can't append?
-        elem
-    }
-
-    fn insert_element_for(&mut self, tag: Tag) -> Handle {
-        self.insert_element(Push, ns!(html), tag.name, tag.attrs)
-    }
-
-    fn insert_and_pop_element_for(&mut self, tag: Tag) -> Handle {
-        self.insert_element(NoPush, ns!(html), tag.name, tag.attrs)
-    }
-
-    fn insert_phantom(&mut self, name: LocalName) -> Handle {
-        self.insert_element(Push, ns!(html), name, vec![])
-    }
-    //§ END
-
-    fn create_formatting_element_for(&mut self, tag: Tag) -> Handle {
-        // FIXME: This really wants unit tests.
-        let mut first_match = None;
-        let mut matches = 0usize;
-        for (i, _, old_tag) in self.active_formatting_end_to_marker() {
-            if tag.equiv_modulo_attr_order(old_tag) {
-                first_match = Some(i);
-                matches += 1;
-            }
-        }
-
-        if matches >= 3 {
-            self.active_formatting
-                .remove(first_match.expect("matches with no index"));
-        }
-
-        let elem = self.insert_element(Push, ns!(html), tag.name.clone(), tag.attrs.clone());
-        self.active_formatting.push(Element(elem.clone(), tag));
-        elem
-    }
-
-    fn clear_active_formatting_to_marker(&mut self) {
-        loop {
-            match self.active_formatting.pop() {
-                None | Some(Marker) => break,
-                _ => (),
-            }
-        }
-    }
-
-    fn process_end_tag_in_body(&mut self, tag: Tag) {
-        // Look back for a matching open element.
-        let mut match_idx = None;
-        for (i, elem) in self.open_elems.iter().enumerate().rev() {
-            if self.html_elem_named(elem, tag.name.clone()) {
-                match_idx = Some(i);
-                break;
-            }
-
-            if self.elem_in(elem, special_tag) {
-                self.sink
-                    .parse_error(Borrowed("Found special tag while closing generic tag"));
-                return;
-            }
-        }
-
-        // Can't use unwrap_or_return!() due to rust-lang/rust#16617.
-        let match_idx = match match_idx {
-            None => {
-                // I believe this is impossible, because the root
-                // <html> element is in special_tag.
-                self.unexpected(&tag);
-                return;
-            },
-            Some(x) => x,
-        };
-
-        self.generate_implied_end_except(tag.name.clone());
-
-        if match_idx != self.open_elems.len() - 1 {
-            // mis-nested tags
-            self.unexpected(&tag);
-        }
-        self.open_elems.truncate(match_idx);
-    }
-
-    fn handle_misnested_a_tags(&mut self, tag: &Tag) {
-        let node = unwrap_or_return!(
-            self.active_formatting_end_to_marker()
-                .filter(|&(_, n, _)| self.html_elem_named(n, local_name!("a")))
-                .next()
-                .map(|(_, n, _)| n.clone()),
-            ()
-        );
-
-        self.unexpected(tag);
-        self.adoption_agency(local_name!("a"));
-        self.position_in_active_formatting(&node)
-            .map(|index| self.active_formatting.remove(index));
-        self.remove_from_stack(&node);
-    }
-
-    //§ tree-construction
-    fn is_foreign(&mut self, token: &Token) -> bool {
-        if let EOFToken = *token {
-            return false;
-        }
-
-        if self.open_elems.is_empty() {
-            return false;
-        }
-
-        let name = self.sink.elem_name(self.adjusted_current_node());
-        if let ns!(html) = *name.ns {
-            return false;
-        }
-
-        if mathml_text_integration_point(name) {
-            match *token {
-                CharacterTokens(..) | NullCharacterToken => return false,
-                TagToken(Tag {
-                    kind: StartTag,
-                    ref name,
-                    ..
-                }) if !matches!(*name, local_name!("mglyph") | local_name!("malignmark")) => {
-                    return false;
-                },
-                _ => (),
-            }
-        }
-
-        if svg_html_integration_point(name) {
-            match *token {
-                CharacterTokens(..) | NullCharacterToken => return false,
-                TagToken(Tag { kind: StartTag, .. }) => return false,
-                _ => (),
-            }
-        }
-
-        if let expanded_name!(mathml "annotation-xml") = name {
-            match *token {
-                TagToken(Tag {
-                    kind: StartTag,
-                    name: local_name!("svg"),
-                    ..
-                }) => return false,
-                CharacterTokens(..) | NullCharacterToken | TagToken(Tag { kind: StartTag, .. }) => {
-                    return !self
-                        .sink
-                        .is_mathml_annotation_xml_integration_point(self.adjusted_current_node());
-                },
-                _ => {},
-            };
-        }
-
-        true
-    }
-    //§ END
-
-    fn enter_foreign(&mut self, mut tag: Tag, ns: Namespace) -> ProcessResult<Handle> {
-        match ns {
-            ns!(mathml) => self.adjust_mathml_attributes(&mut tag),
-            ns!(svg) => self.adjust_svg_attributes(&mut tag),
-            _ => (),
-        }
-        self.adjust_foreign_attributes(&mut tag);
-
-        if tag.self_closing {
-            self.insert_element(NoPush, ns, tag.name, tag.attrs);
-            DoneAckSelfClosing
-        } else {
-            self.insert_element(Push, ns, tag.name, tag.attrs);
-            Done
-        }
-    }
-
-    fn adjust_svg_tag_name(&mut self, tag: &mut Tag) {
-        let Tag { ref mut name, .. } = *tag;
-        match *name {
-            local_name!("altglyph") => *name = local_name!("altGlyph"),
-            local_name!("altglyphdef") => *name = local_name!("altGlyphDef"),
-            local_name!("altglyphitem") => *name = local_name!("altGlyphItem"),
-            local_name!("animatecolor") => *name = local_name!("animateColor"),
-            local_name!("animatemotion") => *name = local_name!("animateMotion"),
-            local_name!("animatetransform") => *name = local_name!("animateTransform"),
-            local_name!("clippath") => *name = local_name!("clipPath"),
-            local_name!("feblend") => *name = local_name!("feBlend"),
-            local_name!("fecolormatrix") => *name = local_name!("feColorMatrix"),
-            local_name!("fecomponenttransfer") => *name = local_name!("feComponentTransfer"),
-            local_name!("fecomposite") => *name = local_name!("feComposite"),
-            local_name!("feconvolvematrix") => *name = local_name!("feConvolveMatrix"),
-            local_name!("fediffuselighting") => *name = local_name!("feDiffuseLighting"),
-            local_name!("fedisplacementmap") => *name = local_name!("feDisplacementMap"),
-            local_name!("fedistantlight") => *name = local_name!("feDistantLight"),
-            local_name!("fedropshadow") => *name = local_name!("feDropShadow"),
-            local_name!("feflood") => *name = local_name!("feFlood"),
-            local_name!("fefunca") => *name = local_name!("feFuncA"),
-            local_name!("fefuncb") => *name = local_name!("feFuncB"),
-            local_name!("fefuncg") => *name = local_name!("feFuncG"),
-            local_name!("fefuncr") => *name = local_name!("feFuncR"),
-            local_name!("fegaussianblur") => *name = local_name!("feGaussianBlur"),
-            local_name!("feimage") => *name = local_name!("feImage"),
-            local_name!("femerge") => *name = local_name!("feMerge"),
-            local_name!("femergenode") => *name = local_name!("feMergeNode"),
-            local_name!("femorphology") => *name = local_name!("feMorphology"),
-            local_name!("feoffset") => *name = local_name!("feOffset"),
-            local_name!("fepointlight") => *name = local_name!("fePointLight"),
-            local_name!("fespecularlighting") => *name = local_name!("feSpecularLighting"),
-            local_name!("fespotlight") => *name = local_name!("feSpotLight"),
-            local_name!("fetile") => *name = local_name!("feTile"),
-            local_name!("feturbulence") => *name = local_name!("feTurbulence"),
-            local_name!("foreignobject") => *name = local_name!("foreignObject"),
-            local_name!("glyphref") => *name = local_name!("glyphRef"),
-            local_name!("lineargradient") => *name = local_name!("linearGradient"),
-            local_name!("radialgradient") => *name = local_name!("radialGradient"),
-            local_name!("textpath") => *name = local_name!("textPath"),
-            _ => (),
-        }
-    }
-
-    fn adjust_attributes<F>(&mut self, tag: &mut Tag, mut map: F)
-    where
-        F: FnMut(LocalName) -> Option<QualName>,
-    {
-        for &mut Attribute { ref mut name, .. } in &mut tag.attrs {
-            if let Some(replacement) = map(name.local.clone()) {
-                *name = replacement;
-            }
-        }
-    }
-
-    fn adjust_svg_attributes(&mut self, tag: &mut Tag) {
-        self.adjust_attributes(tag, |k| match k {
-            local_name!("attributename") => Some(qualname!("", "attributeName")),
-            local_name!("attributetype") => Some(qualname!("", "attributeType")),
-            local_name!("basefrequency") => Some(qualname!("", "baseFrequency")),
-            local_name!("baseprofile") => Some(qualname!("", "baseProfile")),
-            local_name!("calcmode") => Some(qualname!("", "calcMode")),
-            local_name!("clippathunits") => Some(qualname!("", "clipPathUnits")),
-            local_name!("diffuseconstant") => Some(qualname!("", "diffuseConstant")),
-            local_name!("edgemode") => Some(qualname!("", "edgeMode")),
-            local_name!("filterunits") => Some(qualname!("", "filterUnits")),
-            local_name!("glyphref") => Some(qualname!("", "glyphRef")),
-            local_name!("gradienttransform") => Some(qualname!("", "gradientTransform")),
-            local_name!("gradientunits") => Some(qualname!("", "gradientUnits")),
-            local_name!("kernelmatrix") => Some(qualname!("", "kernelMatrix")),
-            local_name!("kernelunitlength") => Some(qualname!("", "kernelUnitLength")),
-            local_name!("keypoints") => Some(qualname!("", "keyPoints")),
-            local_name!("keysplines") => Some(qualname!("", "keySplines")),
-            local_name!("keytimes") => Some(qualname!("", "keyTimes")),
-            local_name!("lengthadjust") => Some(qualname!("", "lengthAdjust")),
-            local_name!("limitingconeangle") => Some(qualname!("", "limitingConeAngle")),
-            local_name!("markerheight") => Some(qualname!("", "markerHeight")),
-            local_name!("markerunits") => Some(qualname!("", "markerUnits")),
-            local_name!("markerwidth") => Some(qualname!("", "markerWidth")),
-            local_name!("maskcontentunits") => Some(qualname!("", "maskContentUnits")),
-            local_name!("maskunits") => Some(qualname!("", "maskUnits")),
-            local_name!("numoctaves") => Some(qualname!("", "numOctaves")),
-            local_name!("pathlength") => Some(qualname!("", "pathLength")),
-            local_name!("patterncontentunits") => Some(qualname!("", "patternContentUnits")),
-            local_name!("patterntransform") => Some(qualname!("", "patternTransform")),
-            local_name!("patternunits") => Some(qualname!("", "patternUnits")),
-            local_name!("pointsatx") => Some(qualname!("", "pointsAtX")),
-            local_name!("pointsaty") => Some(qualname!("", "pointsAtY")),
-            local_name!("pointsatz") => Some(qualname!("", "pointsAtZ")),
-            local_name!("preservealpha") => Some(qualname!("", "preserveAlpha")),
-            local_name!("preserveaspectratio") => Some(qualname!("", "preserveAspectRatio")),
-            local_name!("primitiveunits") => Some(qualname!("", "primitiveUnits")),
-            local_name!("refx") => Some(qualname!("", "refX")),
-            local_name!("refy") => Some(qualname!("", "refY")),
-            local_name!("repeatcount") => Some(qualname!("", "repeatCount")),
-            local_name!("repeatdur") => Some(qualname!("", "repeatDur")),
-            local_name!("requiredextensions") => Some(qualname!("", "requiredExtensions")),
-            local_name!("requiredfeatures") => Some(qualname!("", "requiredFeatures")),
-            local_name!("specularconstant") => Some(qualname!("", "specularConstant")),
-            local_name!("specularexponent") => Some(qualname!("", "specularExponent")),
-            local_name!("spreadmethod") => Some(qualname!("", "spreadMethod")),
-            local_name!("startoffset") => Some(qualname!("", "startOffset")),
-            local_name!("stddeviation") => Some(qualname!("", "stdDeviation")),
-            local_name!("stitchtiles") => Some(qualname!("", "stitchTiles")),
-            local_name!("surfacescale") => Some(qualname!("", "surfaceScale")),
-            local_name!("systemlanguage") => Some(qualname!("", "systemLanguage")),
-            local_name!("tablevalues") => Some(qualname!("", "tableValues")),
-            local_name!("targetx") => Some(qualname!("", "targetX")),
-            local_name!("targety") => Some(qualname!("", "targetY")),
-            local_name!("textlength") => Some(qualname!("", "textLength")),
-            local_name!("viewbox") => Some(qualname!("", "viewBox")),
-            local_name!("viewtarget") => Some(qualname!("", "viewTarget")),
-            local_name!("xchannelselector") => Some(qualname!("", "xChannelSelector")),
-            local_name!("ychannelselector") => Some(qualname!("", "yChannelSelector")),
-            local_name!("zoomandpan") => Some(qualname!("", "zoomAndPan")),
-            _ => None,
-        });
-    }
-
-    fn adjust_mathml_attributes(&mut self, tag: &mut Tag) {
-        self.adjust_attributes(tag, |k| match k {
-            local_name!("definitionurl") => Some(qualname!("", "definitionURL")),
-            _ => None,
-        });
-    }
-
-    fn adjust_foreign_attributes(&mut self, tag: &mut Tag) {
-        self.adjust_attributes(tag, |k| match k {
-            local_name!("xlink:actuate") => Some(qualname!("xlink" xlink "actuate")),
-            local_name!("xlink:arcrole") => Some(qualname!("xlink" xlink "arcrole")),
-            local_name!("xlink:href") => Some(qualname!("xlink" xlink "href")),
-            local_name!("xlink:role") => Some(qualname!("xlink" xlink "role")),
-            local_name!("xlink:show") => Some(qualname!("xlink" xlink "show")),
-            local_name!("xlink:title") => Some(qualname!("xlink" xlink "title")),
-            local_name!("xlink:type") => Some(qualname!("xlink" xlink "type")),
-            local_name!("xml:base") => Some(qualname!("xml" xml "base")),
-            local_name!("xml:lang") => Some(qualname!("xml" xml "lang")),
-            local_name!("xml:space") => Some(qualname!("xml" xml "space")),
-            local_name!("xmlns") => Some(qualname!("" xmlns "xmlns")),
-            local_name!("xmlns:xlink") => Some(qualname!("xmlns" xmlns "xlink")),
-            _ => None,
-        });
-    }
-
-    fn foreign_start_tag(&mut self, mut tag: Tag) -> ProcessResult<Handle> {
-        let current_ns = self.sink.elem_name(self.adjusted_current_node()).ns.clone();
-        match current_ns {
-            ns!(mathml) => self.adjust_mathml_attributes(&mut tag),
-            ns!(svg) => {
-                self.adjust_svg_tag_name(&mut tag);
-                self.adjust_svg_attributes(&mut tag);
-            },
-            _ => (),
-        }
-        self.adjust_foreign_attributes(&mut tag);
-        if tag.self_closing {
-            // FIXME(#118): <script /> in SVG
-            self.insert_element(NoPush, current_ns, tag.name, tag.attrs);
-            DoneAckSelfClosing
-        } else {
-            self.insert_element(Push, current_ns, tag.name, tag.attrs);
-            Done
-        }
-    }
-
-    fn unexpected_start_tag_in_foreign_content(&mut self, tag: Tag) -> ProcessResult<Handle> {
-        self.unexpected(&tag);
-        if self.is_fragment() {
-            self.foreign_start_tag(tag)
-        } else {
-            self.pop();
-            while !self.current_node_in(|n| {
-                *n.ns == ns!(html) ||
-                    mathml_text_integration_point(n) ||
-                    svg_html_integration_point(n)
-            }) {
-                self.pop();
-            }
-            ReprocessForeign(TagToken(tag))
-        }
-    }
-}