Remove remaining HTML elements

sky/engine/core/html/parser/HTMLTreeBuilder.cpp

-/*
- * Copyright (C) 2010 Google, Inc. All Rights Reserved.
- * Copyright (C) 2011, 2014 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "sky/engine/core/html/parser/HTMLTreeBuilder.h"
-
-#include "gen/sky/core/HTMLNames.h"
-#include "sky/engine/bindings/exception_state_placeholder.h"
-#include "sky/engine/core/dom/DocumentFragment.h"
-#include "sky/engine/core/html/HTMLTemplateElement.h"
-#include "sky/engine/core/html/parser/AtomicHTMLToken.h"
-#include "sky/engine/core/html/parser/HTMLDocumentParser.h"
-#include "sky/engine/core/html/parser/HTMLParserIdioms.h"
-#include "sky/engine/core/html/parser/HTMLToken.h"
-#include "sky/engine/core/html/parser/HTMLTokenizer.h"
-
-namespace blink {
-
-static TextPosition uninitializedPositionValue1()
-{
-    return TextPosition(OrdinalNumber::fromOneBasedInt(-1), OrdinalNumber::first());
-}
-
-HTMLTreeBuilder::HTMLTreeBuilder(HTMLDocumentParser* parser, Document* document, bool)
-    :
-#if ENABLE(ASSERT)
-      m_isAttached(true),
-#endif
-      m_tree(document)
-    , m_insertionMode(HTMLMode)
-    , m_originalInsertionMode(HTMLMode)
-    , m_parser(parser)
-    , m_scriptToProcessStartPosition(uninitializedPositionValue1())
-{
-    m_tree.openElements()->pushRootNode(document);
-}
-
-HTMLTreeBuilder::~HTMLTreeBuilder()
-{
-}
-
-void HTMLTreeBuilder::detach()
-{
-#if ENABLE(ASSERT)
-    // This call makes little sense in fragment mode, but for consistency
-    // DocumentParser expects detach() to always be called before it's destroyed.
-    m_isAttached = false;
-#endif
-    // HTMLConstructionSite might be on the callstack when detach() is called
-    // otherwise we'd just call m_tree.clear() here instead.
-    m_tree.detach();
-}
-
-HTMLTreeBuilder::FragmentParsingContext::FragmentParsingContext()
-    : m_fragment(nullptr)
-{
-}
-
-HTMLTreeBuilder::FragmentParsingContext::FragmentParsingContext(DocumentFragment* fragment, Element* contextElement)
-    : m_fragment(fragment)
-{
-    ASSERT(!fragment->hasChildren());
-}
-
-HTMLTreeBuilder::FragmentParsingContext::~FragmentParsingContext()
-{
-}
-
-PassRefPtr<Element> HTMLTreeBuilder::takeScriptToProcess(TextPosition& scriptStartPosition)
-{
-    ASSERT(m_scriptToProcess);
-    ASSERT(!m_tree.hasPendingTasks());
-    // Unpause ourselves, callers may pause us again when processing the script.
-    // The HTML5 spec is written as though scripts are executed inside the tree
-    // builder.  We pause the parser to exit the tree builder, and then resume
-    // before running scripts.
-    scriptStartPosition = m_scriptToProcessStartPosition;
-    m_scriptToProcessStartPosition = uninitializedPositionValue1();
-    return m_scriptToProcess.release();
-}
-
-void HTMLTreeBuilder::constructTree(AtomicHTMLToken* token)
-{
-    const HTMLToken::Type type = token->type();
-
-    if (type == HTMLToken::Character) {
-        processCharacter(token);
-        return;
-    }
-
-    // Any non-character token needs to cause us to flush any pending text immediately.
-    // NOTE: flush() can cause any queued tasks to execute, possibly re-entering the parser.
-    m_tree.flush();
-
-    if (type == HTMLToken::StartTag) {
-        processStartTag(token);
-    } else if (type == HTMLToken::EndTag) {
-        processEndTag(token);
-    } else if (type == HTMLToken::EndOfFile) {
-        processEndOfFile(token);
-    } else {
-        ASSERT_NOT_REACHED();
-    }
-
-    m_tree.executeQueuedTasks();
-    // We might be detached now.
-}
-
-void HTMLTreeBuilder::processStartTag(AtomicHTMLToken* token)
-{
-    ASSERT(token->type() == HTMLToken::StartTag);
-    const AtomicString& name = token->name();
-
-    if (name == HTMLNames::styleTag) {
-        processGenericRawTextStartTag(token);
-    } else if (name == HTMLNames::scriptTag) {
-        processScriptStartTag(token);
-    } else if (token->selfClosing()) {
-        m_tree.insertSelfClosingHTMLElement(token);
-    } else {
-        m_tree.insertHTMLElement(token);
-    }
-}
-
-void HTMLTreeBuilder::processEndTag(AtomicHTMLToken* token)
-{
-    ASSERT(token->type() == HTMLToken::EndTag);
-
-    const InsertionMode mode = insertionMode();
-    if (mode == HTMLMode) {
-        HTMLElementStack::ElementRecord* record = m_tree.openElements()->topRecord();
-        while (record->next()) {
-            RefPtr<Element> element = record->element();
-            if (element->hasLocalName(token->name())) {
-                m_tree.openElements()->popUntilPopped(element.get());
-                ASSERT(m_tree.openElements()->topNode());
-                return;
-            }
-            record = record->next();
-        }
-        return;
-    }
-
-    ASSERT(mode == TextMode);
-    if (token->name() == HTMLNames::scriptTag) {
-        // Pause ourselves so that parsing stops until the script can be processed by the caller.
-        ASSERT(m_tree.currentElement()->hasLocalName(HTMLNames::scriptTag.localName()));
-        m_scriptToProcess = m_tree.currentElement();
-        m_tree.openElements()->pop();
-        setInsertionMode(m_originalInsertionMode);
-        return;
-    }
-    m_tree.openElements()->pop();
-    setInsertionMode(m_originalInsertionMode);
-}
-
-void HTMLTreeBuilder::processCharacter(AtomicHTMLToken* token)
-{
-    ASSERT(token->type() == HTMLToken::Character);
-    m_tree.insertTextNode(token->characters());
-}
-
-void HTMLTreeBuilder::processEndOfFile(AtomicHTMLToken* token)
-{
-    ASSERT(token->type() == HTMLToken::EndOfFile);
-    m_tree.processEndOfFile();
-}
-
-void HTMLTreeBuilder::processGenericRawTextStartTag(AtomicHTMLToken* token)
-{
-    ASSERT(token->type() == HTMLToken::StartTag);
-    m_tree.insertHTMLElement(token);
-    m_originalInsertionMode = m_insertionMode;
-    setInsertionMode(TextMode);
-}
-
-void HTMLTreeBuilder::processScriptStartTag(AtomicHTMLToken* token)
-{
-    ASSERT(token->type() == HTMLToken::StartTag);
-    m_tree.insertScriptElement(token);
-    m_originalInsertionMode = m_insertionMode;
-    TextPosition position = m_parser->textPosition();
-    m_scriptToProcessStartPosition = position;
-    setInsertionMode(TextMode);
-}
-
-void HTMLTreeBuilder::finished()
-{
-    if (isParsingFragment())
-        return;
-    ASSERT(m_isAttached);
-    // Warning, this may detach the parser. Do not do anything else after this.
-    m_tree.finishedParsing();
-}
-
-} // namespace blink