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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /parser/html/nsHtml5DocumentBuilder.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'parser/html/nsHtml5DocumentBuilder.h')
-rw-r--r-- | parser/html/nsHtml5DocumentBuilder.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/parser/html/nsHtml5DocumentBuilder.h b/parser/html/nsHtml5DocumentBuilder.h new file mode 100644 index 0000000000..16d7d7238b --- /dev/null +++ b/parser/html/nsHtml5DocumentBuilder.h @@ -0,0 +1,129 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=2 sw=2 et tw=78: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef nsHtml5DocumentBuilder_h +#define nsHtml5DocumentBuilder_h + +#include "mozilla/dom/Document.h" +#include "nsContentSink.h" +#include "nsHtml5DocumentMode.h" +#include "nsIContent.h" + +namespace mozilla::dom { +class Document; +} + +typedef nsIContent* nsIContentPtr; + +enum eHtml5FlushState { + eNotFlushing = 0, // not flushing + eInFlush = 1, // the Flush() method is on the call stack + eInDocUpdate = 2, // inside an update batch on the document +}; + +class nsHtml5DocumentBuilder : public nsContentSink { + using Encoding = mozilla::Encoding; + template <typename T> + using NotNull = mozilla::NotNull<T>; + + public: + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(nsHtml5DocumentBuilder, + nsContentSink) + + NS_DECL_ISUPPORTS_INHERITED + + inline void HoldElement(already_AddRefed<nsIContent> aContent) { + *(mOwnedElements.AppendElement()) = aContent; + } + + nsresult Init(Document* aDoc, nsIURI* aURI, nsISupports* aContainer, + nsIChannel* aChannel); + + // Getters and setters for fields from nsContentSink + Document* GetDocument() { return mDocument; } + + nsNodeInfoManager* GetNodeInfoManager() { return mNodeInfoManager; } + + /** + * Marks this parser as broken and tells the stream parser (if any) to + * terminate. + * + * @return aReason for convenience + */ + virtual nsresult MarkAsBroken(nsresult aReason); + + /** + * Checks if this parser is broken. Returns a non-NS_OK (i.e. non-0) + * value if broken. + */ + inline nsresult IsBroken() { return mBroken; } + + inline bool IsComplete() { return !mParser; } + + inline void BeginDocUpdate() { + MOZ_RELEASE_ASSERT(IsInFlush(), "Tried to double-open doc update."); + MOZ_RELEASE_ASSERT(mParser, "Started doc update without parser."); + mFlushState = eInDocUpdate; + mDocument->BeginUpdate(); + } + + inline void EndDocUpdate() { + MOZ_RELEASE_ASSERT(IsInDocUpdate(), + "Tried to end doc update without one open."); + mFlushState = eInFlush; + mDocument->EndUpdate(); + } + + inline void BeginFlush() { + MOZ_RELEASE_ASSERT(mFlushState == eNotFlushing, + "Tried to start a flush when already flushing."); + MOZ_RELEASE_ASSERT(mParser, "Started a flush without parser."); + mFlushState = eInFlush; + } + + inline void EndFlush() { + MOZ_RELEASE_ASSERT(IsInFlush(), "Tried to end flush when not flushing."); + mFlushState = eNotFlushing; + } + + inline bool IsInDocUpdate() { return mFlushState == eInDocUpdate; } + + inline bool IsInFlush() { return mFlushState == eInFlush; } + + /** + * Sets up style sheet load / parse + */ + void UpdateStyleSheet(nsIContent* aElement); + + void SetDocumentMode(nsHtml5DocumentMode m); + + void SetNodeInfoManager(nsNodeInfoManager* aManager) { + mNodeInfoManager = aManager; + } + + // nsContentSink methods + virtual void UpdateChildCounts() override; + virtual nsresult FlushTags() override; + + protected: + explicit nsHtml5DocumentBuilder(bool aRunsToCompletion); + virtual ~nsHtml5DocumentBuilder(); + + protected: + AutoTArray<nsCOMPtr<nsIContent>, 32> mOwnedElements; + /** + * Non-NS_OK if this parser should refuse to process any more input. + * For example, the parser needs to be marked as broken if it drops some + * input due to a memory allocation failure. In such a case, the whole + * parser needs to be marked as broken, because some input has been lost + * and parsing more input could lead to a DOM where pieces of HTML source + * that weren't supposed to become scripts become scripts. + */ + nsresult mBroken; + eHtml5FlushState mFlushState; +}; + +#endif // nsHtml5DocumentBuilder_h |