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1 /* | 1 /* |
2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. | 2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. |
3 * Copyright (C) 2011 Apple Inc. All rights reserved. | 3 * Copyright (C) 2011 Apple Inc. All rights reserved. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
7 * are met: | 7 * are met: |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
11 * notice, this list of conditions and the following disclaimer in the | 11 * notice, this list of conditions and the following disclaimer in the |
12 * documentation and/or other materials provided with the distribution. | 12 * documentation and/or other materials provided with the distribution. |
13 * | 13 * |
14 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY | 14 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY |
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR | 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR |
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 */ | 25 */ |
26 | 26 |
27 #include "core/html/parser/HTMLConstructionSite.h" | 27 #include "core/html/parser/HTMLConstructionSite.h" |
28 | 28 |
29 #include "bindings/core/v8/Microtask.h" | |
30 #include "bindings/core/v8/V8PerIsolateData.h" | |
29 #include "core/HTMLElementFactory.h" | 31 #include "core/HTMLElementFactory.h" |
30 #include "core/HTMLNames.h" | 32 #include "core/HTMLNames.h" |
31 #include "core/dom/Comment.h" | 33 #include "core/dom/Comment.h" |
32 #include "core/dom/DocumentFragment.h" | 34 #include "core/dom/DocumentFragment.h" |
33 #include "core/dom/DocumentType.h" | 35 #include "core/dom/DocumentType.h" |
34 #include "core/dom/Element.h" | 36 #include "core/dom/Element.h" |
35 #include "core/dom/ElementTraversal.h" | 37 #include "core/dom/ElementTraversal.h" |
38 #include "core/dom/IgnoreDestructiveWriteCountIncrementer.h" | |
36 #include "core/dom/ScriptLoader.h" | 39 #include "core/dom/ScriptLoader.h" |
37 #include "core/dom/TemplateContentDocumentFragment.h" | 40 #include "core/dom/TemplateContentDocumentFragment.h" |
38 #include "core/dom/Text.h" | 41 #include "core/dom/Text.h" |
42 #include "core/dom/custom/CEReactionsScope.h" | |
43 #include "core/dom/custom/CustomElementDefinition.h" | |
44 #include "core/dom/custom/CustomElementDescriptor.h" | |
45 #include "core/dom/custom/CustomElementsRegistry.h" | |
46 #include "core/frame/LocalDOMWindow.h" | |
39 #include "core/frame/LocalFrame.h" | 47 #include "core/frame/LocalFrame.h" |
40 #include "core/html/HTMLFormElement.h" | 48 #include "core/html/HTMLFormElement.h" |
41 #include "core/html/HTMLHtmlElement.h" | 49 #include "core/html/HTMLHtmlElement.h" |
42 #include "core/html/HTMLPlugInElement.h" | 50 #include "core/html/HTMLPlugInElement.h" |
43 #include "core/html/HTMLScriptElement.h" | 51 #include "core/html/HTMLScriptElement.h" |
44 #include "core/html/HTMLTemplateElement.h" | 52 #include "core/html/HTMLTemplateElement.h" |
45 #include "core/html/parser/AtomicHTMLToken.h" | 53 #include "core/html/parser/AtomicHTMLToken.h" |
46 #include "core/html/parser/HTMLParserIdioms.h" | 54 #include "core/html/parser/HTMLParserIdioms.h" |
55 #include "core/html/parser/HTMLParserReentryPermit.h" | |
47 #include "core/html/parser/HTMLStackItem.h" | 56 #include "core/html/parser/HTMLStackItem.h" |
48 #include "core/html/parser/HTMLToken.h" | 57 #include "core/html/parser/HTMLToken.h" |
49 #include "core/loader/FrameLoader.h" | 58 #include "core/loader/FrameLoader.h" |
50 #include "core/loader/FrameLoaderClient.h" | 59 #include "core/loader/FrameLoaderClient.h" |
51 #include "core/svg/SVGScriptElement.h" | 60 #include "core/svg/SVGScriptElement.h" |
52 #include "platform/text/TextBreakIterator.h" | 61 #include "platform/text/TextBreakIterator.h" |
53 #include <limits> | 62 #include <limits> |
54 | 63 |
55 namespace blink { | 64 namespace blink { |
56 | 65 |
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307 // re-enters the parser. | 316 // re-enters the parser. |
308 TaskQueue queue; | 317 TaskQueue queue; |
309 queue.swap(m_taskQueue); | 318 queue.swap(m_taskQueue); |
310 | 319 |
311 for (size_t i = 0; i < size; ++i) | 320 for (size_t i = 0; i < size; ++i) |
312 executeTask(queue[i]); | 321 executeTask(queue[i]); |
313 | 322 |
314 // We might be detached now. | 323 // We might be detached now. |
315 } | 324 } |
316 | 325 |
317 HTMLConstructionSite::HTMLConstructionSite(Document& document, ParserContentPoli cy parserContentPolicy) | 326 HTMLConstructionSite::HTMLConstructionSite(HTMLParserReentryPermit* reentryPermi t, Document& document, ParserContentPolicy parserContentPolicy) |
318 : m_document(&document) | 327 : m_reentryPermit(reentryPermit) |
328 , m_document(&document) | |
319 , m_attachmentRoot(document) | 329 , m_attachmentRoot(document) |
320 , m_parserContentPolicy(parserContentPolicy) | 330 , m_parserContentPolicy(parserContentPolicy) |
321 , m_isParsingFragment(false) | 331 , m_isParsingFragment(false) |
322 , m_redirectAttachToFosterParent(false) | 332 , m_redirectAttachToFosterParent(false) |
323 , m_inQuirksMode(document.inQuirksMode()) | 333 , m_inQuirksMode(document.inQuirksMode()) |
324 { | 334 { |
325 ASSERT(m_document->isHTMLDocument() || m_document->isXHTMLDocument()); | 335 ASSERT(m_document->isHTMLDocument() || m_document->isXHTMLDocument()); |
326 } | 336 } |
327 | 337 |
328 void HTMLConstructionSite::initFragmentParsing(DocumentFragment* fragment, Eleme nt* contextElement) | 338 void HTMLConstructionSite::initFragmentParsing(DocumentFragment* fragment, Eleme nt* contextElement) |
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345 // Depending on why we're being destroyed it might be OK | 355 // Depending on why we're being destroyed it might be OK |
346 // to forget queued tasks, but currently we don't expect to. | 356 // to forget queued tasks, but currently we don't expect to. |
347 ASSERT(m_taskQueue.isEmpty()); | 357 ASSERT(m_taskQueue.isEmpty()); |
348 // Currently we assume that text will never be the last token in the | 358 // Currently we assume that text will never be the last token in the |
349 // document and that we'll always queue some additional task to cause it to flush. | 359 // document and that we'll always queue some additional task to cause it to flush. |
350 ASSERT(m_pendingText.isEmpty()); | 360 ASSERT(m_pendingText.isEmpty()); |
351 } | 361 } |
352 | 362 |
353 DEFINE_TRACE(HTMLConstructionSite) | 363 DEFINE_TRACE(HTMLConstructionSite) |
354 { | 364 { |
365 visitor->trace(m_reentryPermit); | |
355 visitor->trace(m_document); | 366 visitor->trace(m_document); |
356 visitor->trace(m_attachmentRoot); | 367 visitor->trace(m_attachmentRoot); |
357 visitor->trace(m_head); | 368 visitor->trace(m_head); |
358 visitor->trace(m_form); | 369 visitor->trace(m_form); |
359 visitor->trace(m_openElements); | 370 visitor->trace(m_openElements); |
360 visitor->trace(m_activeFormattingElements); | 371 visitor->trace(m_activeFormattingElements); |
361 visitor->trace(m_taskQueue); | 372 visitor->trace(m_taskQueue); |
362 visitor->trace(m_pendingText); | 373 visitor->trace(m_pendingText); |
363 } | 374 } |
364 | 375 |
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740 return element; | 751 return element; |
741 } | 752 } |
742 | 753 |
743 inline Document& HTMLConstructionSite::ownerDocumentForCurrentNode() | 754 inline Document& HTMLConstructionSite::ownerDocumentForCurrentNode() |
744 { | 755 { |
745 if (isHTMLTemplateElement(*currentNode())) | 756 if (isHTMLTemplateElement(*currentNode())) |
746 return toHTMLTemplateElement(currentElement())->content()->document(); | 757 return toHTMLTemplateElement(currentElement())->content()->document(); |
747 return currentNode()->document(); | 758 return currentNode()->document(); |
748 } | 759 } |
749 | 760 |
761 // "look up a custom element definition" for a token | |
762 // https://html.spec.whatwg.org/#look-up-a-custom-element-definition | |
763 CustomElementDefinition* HTMLConstructionSite::lookUpCustomElementDefinition(Doc ument& document, AtomicHTMLToken* token) | |
764 { | |
765 // TODO(dominicc): Add a namespace parameter and check when foreign | |
766 // and HTML element creation is unified. | |
kouhei (in TOK)
2016/08/15 02:10:31
mention in a TODO about step 1?
| |
767 | |
768 // "2. If document does not have a browsing context, return null." | |
769 LocalDOMWindow* window = document.domWindow(); | |
770 if (!window) | |
771 return nullptr; | |
772 | |
773 // "3. Let registry be document's browsing context's Window's | |
774 // CustomElementsRegistry object." | |
775 CustomElementsRegistry* registry = window->maybeCustomElements(); | |
776 if (!registry) | |
777 return nullptr; | |
778 | |
779 const AtomicString& localName = token->name(); | |
780 const Attribute* isAttribute = token->getAttributeItem(HTMLNames::isAttr); | |
781 const AtomicString& name = isAttribute ? isAttribute->value() : localName; | |
782 CustomElementDescriptor descriptor(name, localName); | |
783 | |
784 // 4.-6. | |
785 return registry->definitionFor(descriptor); | |
786 } | |
787 | |
788 // "create an element for a token" | |
789 // https://html.spec.whatwg.org/#create-an-element-for-the-token | |
790 // TODO(dominicc): When form association is separate from creation, unify | |
791 // this with foreign element creation. | |
750 HTMLElement* HTMLConstructionSite::createHTMLElement(AtomicHTMLToken* token) | 792 HTMLElement* HTMLConstructionSite::createHTMLElement(AtomicHTMLToken* token) |
751 { | 793 { |
794 // "1. Let document be intended parent's node document." | |
752 Document& document = ownerDocumentForCurrentNode(); | 795 Document& document = ownerDocumentForCurrentNode(); |
796 | |
753 // Only associate the element with the current form if we're creating the ne w element | 797 // Only associate the element with the current form if we're creating the ne w element |
754 // in a document with a browsing context (rather than in <template> contents ). | 798 // in a document with a browsing context (rather than in <template> contents ). |
799 // TODO(dominicc): Change form to happen after element creation when | |
800 // implementing customized built-in elements. | |
755 HTMLFormElement* form = document.frame() ? m_form.get() : nullptr; | 801 HTMLFormElement* form = document.frame() ? m_form.get() : nullptr; |
756 // FIXME: This can't use HTMLConstructionSite::createElement because we | 802 |
757 // have to pass the current form element. We should rework form association | 803 // "2. Let local name be the tag name of the token." |
758 // to occur after construction to allow better code sharing here. | 804 // "3. Let is be the value of the "is" attribute in the giev token ..." etc. |
759 HTMLElement* element = HTMLElementFactory::createHTMLElement(token->name(), document, form, getCreateElementFlags()); | 805 // "4. Let definition be the result of looking up a custom element ..." etc. |
760 setAttributes(element, token, m_parserContentPolicy); | 806 CustomElementDefinition* definition = m_isParsingFragment ? nullptr : lookUp CustomElementDefinition(document, token); |
807 // "5. If definition is non-null and the parser was not originally created | |
808 // for the HTML fragment parsing algorithm, then let will execute script | |
809 // be true." | |
810 bool willExecuteScript = definition && !m_isParsingFragment; | |
811 | |
812 HTMLElement* element; | |
813 | |
814 if (willExecuteScript) { | |
815 // "6.1 Increment the parser's script nesting level." | |
816 HTMLParserReentryPermit::ScriptNestingLevelIncrementer incrementScriptNe stingLevel = m_reentryPermit->incrementScriptNestingLevel(); | |
817 | |
818 // "6.2 Set the parser pause flag to true." | |
819 m_reentryPermit->pause(); | |
820 | |
821 // TODO(dominicc): Change this once resolved: | |
822 // https://github.com/whatwg/html/issues/1630 | |
823 IgnoreDestructiveWriteCountIncrementer ignoreDestructiveWrites( | |
824 &document); | |
825 | |
826 // "6.3 If the JavaScript execution context stack is empty, | |
827 // then perform a microtask checkpoint." | |
828 | |
829 // TODO(dominicc): This is the way the Blink HTML parser | |
830 // performs checkpoints, but note the spec is different--it | |
831 // talks about the JavaScript stack, not the script nesting | |
832 // level. | |
833 if (1u == m_reentryPermit->scriptNestingLevel()) | |
834 Microtask::performCheckpoint(V8PerIsolateData::mainThreadIsolate()); | |
835 | |
836 // "6.4 Push a new element queue onto the custom element | |
837 // reactions stack." | |
838 CEReactionsScope reactions; | |
839 | |
840 // 7. | |
841 QualifiedName elementQName(nullAtom, token->name(), HTMLNames::xhtmlName spaceURI); | |
842 element = definition->createElementSync(document, elementQName); | |
843 | |
844 // "8. Append each attribute in the given token to element." | |
845 // We don't use setAttributes here because the custom element | |
846 // constructor may have manipulated attributes. | |
847 for (const auto& attribute : token->attributes()) { | |
848 element->setAttribute(attribute.name(), attribute.value()); | |
849 } | |
850 | |
851 // "9. If will execute script is true, then ..." etc. The | |
852 // CEReactionsScope and ScriptNestingLevelIncrementer | |
853 // destructors implement steps 9.1-4. | |
854 } else { | |
855 // FIXME: This can't use | |
856 // HTMLConstructionSite::createElement because we have to | |
857 // pass the current form element. We should rework form | |
858 // association to occur after construction to allow better | |
859 // code sharing here. | |
860 element = HTMLElementFactory::createHTMLElement(token->name(), document, form, getCreateElementFlags()); | |
861 | |
862 // "8. Append each attribute in the given token to element." | |
863 setAttributes(element, token, m_parserContentPolicy); | |
864 } | |
865 | |
866 // TODO(dominicc): Implement steps 10-12 when customized built-in | |
867 // elements are implemented. | |
868 | |
761 return element; | 869 return element; |
762 } | 870 } |
763 | 871 |
764 HTMLStackItem* HTMLConstructionSite::createElementFromSavedToken(HTMLStackItem* item) | 872 HTMLStackItem* HTMLConstructionSite::createElementFromSavedToken(HTMLStackItem* item) |
765 { | 873 { |
766 Element* element; | 874 Element* element; |
767 // NOTE: Moving from item -> token -> item copies the Attribute vector twice ! | 875 // NOTE: Moving from item -> token -> item copies the Attribute vector twice ! |
768 AtomicHTMLToken fakeToken(HTMLToken::StartTag, item->localName(), item->attr ibutes()); | 876 AtomicHTMLToken fakeToken(HTMLToken::StartTag, item->localName(), item->attr ibutes()); |
769 if (item->namespaceURI() == HTMLNames::xhtmlNamespaceURI) | 877 if (item->namespaceURI() == HTMLNames::xhtmlNamespaceURI) |
770 element = createHTMLElement(&fakeToken); | 878 element = createHTMLElement(&fakeToken); |
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875 queueTask(task); | 983 queueTask(task); |
876 } | 984 } |
877 | 985 |
878 DEFINE_TRACE(HTMLConstructionSite::PendingText) | 986 DEFINE_TRACE(HTMLConstructionSite::PendingText) |
879 { | 987 { |
880 visitor->trace(parent); | 988 visitor->trace(parent); |
881 visitor->trace(nextChild); | 989 visitor->trace(nextChild); |
882 } | 990 } |
883 | 991 |
884 } // namespace blink | 992 } // namespace blink |
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