Add m-esr52 at 52.6.0

1 files changed, 362 insertions, 0 deletions

diff --git a/parser/html/nsHtml5Parser.h b/parser/html/nsHtml5Parser.h
new file mode 100644
index 000000000..9d88adb29
--- /dev/null
+++ b/parser/html/nsHtml5Parser.h
@@ -0,0 +1,362 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 NS_HTML5_PARSER
+#define NS_HTML5_PARSER
+
+#include "nsAutoPtr.h"
+#include "nsIParser.h"
+#include "nsDeque.h"
+#include "nsIURL.h"
+#include "nsParserCIID.h"
+#include "nsITokenizer.h"
+#include "nsIContentSink.h"
+#include "nsIRequest.h"
+#include "nsIChannel.h"
+#include "nsCOMArray.h"
+#include "nsContentSink.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsIInputStream.h"
+#include "nsDetectionConfident.h"
+#include "nsHtml5OwningUTF16Buffer.h"
+#include "nsHtml5TreeOpExecutor.h"
+#include "nsHtml5StreamParser.h"
+#include "nsHtml5AtomTable.h"
+#include "nsWeakReference.h"
+#include "nsHtml5StreamListener.h"
+
+class nsHtml5Parser final : public nsIParser,
+                            public nsSupportsWeakReference
+{
+  public:
+    NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
+    NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+
+    NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsHtml5Parser, nsIParser)
+
+    nsHtml5Parser();
+
+    /* Start nsIParser */
+    /**
+     * No-op for backwards compat.
+     */
+    NS_IMETHOD_(void) SetContentSink(nsIContentSink* aSink) override;
+
+    /**
+     * Returns the tree op executor for backwards compat.
+     */
+    NS_IMETHOD_(nsIContentSink*) GetContentSink() override;
+
+    /**
+     * Always returns "view" for backwards compat.
+     */
+    NS_IMETHOD_(void) GetCommand(nsCString& aCommand) override;
+
+    /**
+     * No-op for backwards compat.
+     */
+    NS_IMETHOD_(void) SetCommand(const char* aCommand) override;
+
+    /**
+     * No-op for backwards compat.
+     */
+    NS_IMETHOD_(void) SetCommand(eParserCommands aParserCommand) override;
+
+    /**
+     *  Call this method once you've created a parser, and want to instruct it
+     *  about what charset to load
+     *
+     *  @param   aCharset the charset of a document
+     *  @param   aCharsetSource the source of the charset
+     */
+    NS_IMETHOD_(void) SetDocumentCharset(const nsACString& aCharset, int32_t aSource) override;
+
+    /**
+     * Don't call. For interface compat only.
+     */
+    NS_IMETHOD_(void) GetDocumentCharset(nsACString& aCharset, int32_t& aSource) override
+    {
+      NS_NOTREACHED("No one should call this.");
+    }
+
+    /**
+     * Get the channel associated with this parser
+     * @param aChannel out param that will contain the result
+     * @return NS_OK if successful or NS_NOT_AVAILABLE if not
+     */
+    NS_IMETHOD GetChannel(nsIChannel** aChannel) override;
+
+    /**
+     * Return |this| for backwards compat.
+     */
+    NS_IMETHOD GetDTD(nsIDTD** aDTD) override;
+
+    /**
+     * Get the stream parser for this parser
+     */
+    virtual nsIStreamListener* GetStreamListener() override;
+
+    /**
+     * Don't call. For interface compat only.
+     */
+    NS_IMETHOD ContinueInterruptedParsing() override;
+
+    /**
+     * Blocks the parser.
+     */
+    NS_IMETHOD_(void) BlockParser() override;
+
+    /**
+     * Unblocks the parser.
+     */
+    NS_IMETHOD_(void) UnblockParser() override;
+
+    /**
+     * Asynchronously continues parsing.
+     */
+    NS_IMETHOD_(void) ContinueInterruptedParsingAsync() override;
+
+    /**
+     * Query whether the parser is enabled (i.e. not blocked) or not.
+     */
+    NS_IMETHOD_(bool) IsParserEnabled() override;
+
+    /**
+     * Query whether the parser thinks it's done with parsing.
+     */
+    NS_IMETHOD_(bool) IsComplete() override;
+
+    /**
+     * Set up request observer.
+     *
+     * @param   aURL used for View Source title
+     * @param   aListener a listener to forward notifications to
+     * @param   aKey the root context key (used for document.write)
+     * @param   aMode ignored (for interface compat only)
+     */
+    NS_IMETHOD Parse(nsIURI* aURL,
+                     nsIRequestObserver* aListener = nullptr,
+                     void* aKey = 0,
+                     nsDTDMode aMode = eDTDMode_autodetect) override;
+
+    /**
+     * document.write and document.close
+     *
+     * @param   aSourceBuffer the argument of document.write (empty for .close())
+     * @param   aKey a key unique to the script element that caused this call
+     * @param   aContentType "text/html" for HTML mode, else text/plain mode
+     * @param   aLastCall true if .close() false if .write()
+     * @param   aMode ignored (for interface compat only)
+     */
+    nsresult Parse(const nsAString& aSourceBuffer,
+                   void* aKey,
+                   const nsACString& aContentType,
+                   bool aLastCall,
+                   nsDTDMode aMode = eDTDMode_autodetect);
+
+    /**
+     * Stops the parser prematurely
+     */
+    NS_IMETHOD Terminate() override;
+
+    /**
+     * Don't call. For interface backwards compat only.
+     */
+    NS_IMETHOD ParseFragment(const nsAString& aSourceBuffer,
+                             nsTArray<nsString>& aTagStack) override;
+
+    /**
+     * Don't call. For interface compat only.
+     */
+    NS_IMETHOD BuildModel() override;
+
+    /**
+     * Don't call. For interface compat only.
+     */
+    NS_IMETHOD CancelParsingEvents() override;
+
+    /**
+     * Don't call. For interface compat only.
+     */
+    virtual void Reset() override;
+
+    /**
+     * True if the insertion point (per HTML5) is defined.
+     */
+    virtual bool IsInsertionPointDefined() override;
+
+    /**
+     * Call immediately before starting to evaluate a parser-inserted script or
+     * in general when the spec says to define an insertion point.
+     */
+    virtual void PushDefinedInsertionPoint() override;
+
+    /**
+     * Call immediately after having evaluated a parser-inserted script or
+     * generally want to restore to the state before the last
+     * PushDefinedInsertionPoint call.
+     */
+    virtual void PopDefinedInsertionPoint() override;
+
+    /**
+     * Marks the HTML5 parser as not a script-created parser: Prepares the 
+     * parser to be able to read a stream.
+     *
+     * @param aCommand the parser command (Yeah, this is bad API design. Let's
+     * make this better when retiring nsIParser)
+     */
+    virtual void MarkAsNotScriptCreated(const char* aCommand) override;
+
+    /**
+     * True if this is a script-created HTML5 parser.
+     */
+    virtual bool IsScriptCreated() override;
+
+    /* End nsIParser  */
+
+    // Not from an external interface
+    // Non-inherited methods
+
+  public:
+
+    /**
+     * Initializes the parser to load from a channel.
+     */
+    virtual nsresult Initialize(nsIDocument* aDoc,
+                        nsIURI* aURI,
+                        nsISupports* aContainer,
+                        nsIChannel* aChannel);
+
+    inline nsHtml5Tokenizer* GetTokenizer() {
+      return mTokenizer;
+    }
+
+    void InitializeDocWriteParserState(nsAHtml5TreeBuilderState* aState, int32_t aLine);
+
+    void DropStreamParser()
+    {
+      if (GetStreamParser()) {
+        GetStreamParser()->DropTimer();
+        mStreamListener->DropDelegate();
+        mStreamListener = nullptr;
+      }
+    }
+    
+    void StartTokenizer(bool aScriptingEnabled);
+    
+    void ContinueAfterFailedCharsetSwitch();
+
+    nsHtml5StreamParser* GetStreamParser()
+    {
+      if (!mStreamListener) {
+        return nullptr;
+      }
+      return mStreamListener->GetDelegate();
+    }
+
+    /**
+     * Parse until pending data is exhausted or a script blocks the parser
+     */
+    nsresult ParseUntilBlocked();
+
+  private:
+
+    virtual ~nsHtml5Parser();
+
+    // State variables
+
+    /**
+     * Whether the last character tokenized was a carriage return (for CRLF)
+     */
+    bool                          mLastWasCR;
+
+    /**
+     * Whether the last character tokenized was a carriage return (for CRLF)
+     * when preparsing document.write.
+     */
+    bool                          mDocWriteSpeculativeLastWasCR;
+
+    /**
+     * The parser is blocking on a script
+     */
+    bool                          mBlocked;
+
+    /**
+     * Whether the document.write() speculator is already active.
+     */
+    bool                          mDocWriteSpeculatorActive;
+    
+    /**
+     * The number of PushDefinedInsertionPoint calls we've seen without a
+     * matching PopDefinedInsertionPoint.
+     */
+    int32_t                       mInsertionPointPushLevel;
+
+    /**
+     * True if document.close() has been called.
+     */
+    bool                          mDocumentClosed;
+
+    bool                          mInDocumentWrite;
+
+    // Portable parser objects
+    /**
+     * The first buffer in the pending UTF-16 buffer queue
+     */
+    RefPtr<nsHtml5OwningUTF16Buffer>  mFirstBuffer;
+
+    /**
+     * The last buffer in the pending UTF-16 buffer queue. Always points
+     * to a sentinel object with nullptr as its parser key.
+     */
+    nsHtml5OwningUTF16Buffer* mLastBuffer; // weak ref;
+
+    /**
+     * The tree operation executor
+     */
+    RefPtr<nsHtml5TreeOpExecutor>     mExecutor;
+
+    /**
+     * The HTML5 tree builder
+     */
+    const nsAutoPtr<nsHtml5TreeBuilder> mTreeBuilder;
+
+    /**
+     * The HTML5 tokenizer
+     */
+    const nsAutoPtr<nsHtml5Tokenizer>   mTokenizer;
+
+    /**
+     * Another HTML5 tree builder for preloading document.written content.
+     */
+    nsAutoPtr<nsHtml5TreeBuilder> mDocWriteSpeculativeTreeBuilder;
+
+    /**
+     * Another HTML5 tokenizer for preloading document.written content.
+     */
+    nsAutoPtr<nsHtml5Tokenizer>   mDocWriteSpeculativeTokenizer;
+
+    /**
+     * The stream listener holding the stream parser.
+     */
+    RefPtr<nsHtml5StreamListener>     mStreamListener;
+
+    /**
+     *
+     */
+    int32_t                             mRootContextLineNumber;
+    
+    /**
+     * Whether it's OK to transfer parsing back to the stream parser
+     */
+    bool                                mReturnToStreamParserPermitted;
+
+    /**
+     * The scoped atom table
+     */
+    nsHtml5AtomTable                    mAtomTable;
+
+};
+#endif