1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/parser/html/nsHtml5TreeOpExecutor.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,270 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef nsHtml5TreeOpExecutor_h
1.9 +#define nsHtml5TreeOpExecutor_h
1.10 +
1.11 +#include "nsIAtom.h"
1.12 +#include "nsIContent.h"
1.13 +#include "nsIDocument.h"
1.14 +#include "nsTraceRefcnt.h"
1.15 +#include "nsHtml5TreeOperation.h"
1.16 +#include "nsHtml5SpeculativeLoad.h"
1.17 +#include "nsTArray.h"
1.18 +#include "nsContentSink.h"
1.19 +#include "nsNodeInfoManager.h"
1.20 +#include "nsHtml5DocumentMode.h"
1.21 +#include "nsIScriptElement.h"
1.22 +#include "nsIParser.h"
1.23 +#include "nsAHtml5TreeOpSink.h"
1.24 +#include "nsHtml5TreeOpStage.h"
1.25 +#include "nsIURI.h"
1.26 +#include "nsTHashtable.h"
1.27 +#include "nsHashKeys.h"
1.28 +#include "mozilla/LinkedList.h"
1.29 +#include "nsHtml5DocumentBuilder.h"
1.30 +
1.31 +class nsHtml5Parser;
1.32 +class nsHtml5TreeBuilder;
1.33 +class nsHtml5Tokenizer;
1.34 +class nsHtml5StreamParser;
1.35 +
1.36 +class nsHtml5TreeOpExecutor : public nsHtml5DocumentBuilder,
1.37 + public nsIContentSink,
1.38 + public nsAHtml5TreeOpSink,
1.39 + public mozilla::LinkedListElement<nsHtml5TreeOpExecutor>
1.40 +{
1.41 + friend class nsHtml5FlushLoopGuard;
1.42 +
1.43 + public:
1.44 + NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
1.45 + NS_DECL_ISUPPORTS_INHERITED
1.46 +
1.47 + private:
1.48 + static bool sExternalViewSource;
1.49 +#ifdef DEBUG_NS_HTML5_TREE_OP_EXECUTOR_FLUSH
1.50 + static uint32_t sAppendBatchMaxSize;
1.51 + static uint32_t sAppendBatchSlotsExamined;
1.52 + static uint32_t sAppendBatchExaminations;
1.53 + static uint32_t sLongestTimeOffTheEventLoop;
1.54 + static uint32_t sTimesFlushLoopInterrupted;
1.55 +#endif
1.56 +
1.57 + /**
1.58 + * Whether EOF needs to be suppressed
1.59 + */
1.60 + bool mSuppressEOF;
1.61 +
1.62 + bool mReadingFromStage;
1.63 + nsTArray<nsHtml5TreeOperation> mOpQueue;
1.64 + nsHtml5StreamParser* mStreamParser;
1.65 +
1.66 + /**
1.67 + * URLs already preloaded/preloading.
1.68 + */
1.69 + nsTHashtable<nsCStringHashKey> mPreloadedURLs;
1.70 +
1.71 + nsCOMPtr<nsIURI> mSpeculationBaseURI;
1.72 +
1.73 + nsCOMPtr<nsIURI> mViewSourceBaseURI;
1.74 +
1.75 + /**
1.76 + * Whether the parser has started
1.77 + */
1.78 + bool mStarted;
1.79 +
1.80 + nsHtml5TreeOpStage mStage;
1.81 +
1.82 + bool mRunFlushLoopOnStack;
1.83 +
1.84 + bool mCallContinueInterruptedParsingIfEnabled;
1.85 +
1.86 + /**
1.87 + * Whether this executor has already complained about matters related
1.88 + * to character encoding declarations.
1.89 + */
1.90 + bool mAlreadyComplainedAboutCharset;
1.91 +
1.92 + public:
1.93 +
1.94 + nsHtml5TreeOpExecutor();
1.95 + virtual ~nsHtml5TreeOpExecutor();
1.96 +
1.97 + // nsIContentSink
1.98 +
1.99 + /**
1.100 + * Unimplemented. For interface compat only.
1.101 + */
1.102 + NS_IMETHOD WillParse();
1.103 +
1.104 + /**
1.105 + *
1.106 + */
1.107 + NS_IMETHOD WillBuildModel(nsDTDMode aDTDMode);
1.108 +
1.109 + /**
1.110 + * Emits EOF.
1.111 + */
1.112 + NS_IMETHOD DidBuildModel(bool aTerminated);
1.113 +
1.114 + /**
1.115 + * Forwards to nsContentSink
1.116 + */
1.117 + NS_IMETHOD WillInterrupt();
1.118 +
1.119 + /**
1.120 + * Unimplemented. For interface compat only.
1.121 + */
1.122 + NS_IMETHOD WillResume();
1.123 +
1.124 + /**
1.125 + * Sets the parser.
1.126 + */
1.127 + NS_IMETHOD SetParser(nsParserBase* aParser);
1.128 +
1.129 + /**
1.130 + * No-op for backwards compat.
1.131 + */
1.132 + virtual void FlushPendingNotifications(mozFlushType aType);
1.133 +
1.134 + /**
1.135 + * Don't call. For interface compat only.
1.136 + */
1.137 + NS_IMETHOD SetDocumentCharset(nsACString& aCharset) {
1.138 + NS_NOTREACHED("No one should call this.");
1.139 + return NS_ERROR_NOT_IMPLEMENTED;
1.140 + }
1.141 +
1.142 + /**
1.143 + * Returns the document.
1.144 + */
1.145 + virtual nsISupports *GetTarget();
1.146 +
1.147 + virtual void ContinueInterruptedParsingAsync();
1.148 +
1.149 + // XXX Does anyone need this?
1.150 + nsIDocShell* GetDocShell()
1.151 + {
1.152 + return mDocShell;
1.153 + }
1.154 +
1.155 + bool IsScriptExecuting()
1.156 + {
1.157 + return IsScriptExecutingImpl();
1.158 + }
1.159 +
1.160 + // Not from interface
1.161 +
1.162 + void SetStreamParser(nsHtml5StreamParser* aStreamParser)
1.163 + {
1.164 + mStreamParser = aStreamParser;
1.165 + }
1.166 +
1.167 + void InitializeDocWriteParserState(nsAHtml5TreeBuilderState* aState, int32_t aLine);
1.168 +
1.169 + bool IsScriptEnabled();
1.170 +
1.171 + virtual nsresult MarkAsBroken(nsresult aReason);
1.172 +
1.173 + void StartLayout();
1.174 +
1.175 + void FlushSpeculativeLoads();
1.176 +
1.177 + void RunFlushLoop();
1.178 +
1.179 + nsresult FlushDocumentWrite();
1.180 +
1.181 + void MaybeSuspend();
1.182 +
1.183 + void Start();
1.184 +
1.185 + void NeedsCharsetSwitchTo(const char* aEncoding,
1.186 + int32_t aSource,
1.187 + uint32_t aLineNumber);
1.188 +
1.189 + void MaybeComplainAboutCharset(const char* aMsgId,
1.190 + bool aError,
1.191 + uint32_t aLineNumber);
1.192 +
1.193 + void ComplainAboutBogusProtocolCharset(nsIDocument* aDoc);
1.194 +
1.195 + bool IsComplete()
1.196 + {
1.197 + return !mParser;
1.198 + }
1.199 +
1.200 + bool HasStarted()
1.201 + {
1.202 + return mStarted;
1.203 + }
1.204 +
1.205 + bool IsFlushing()
1.206 + {
1.207 + return mFlushState >= eInFlush;
1.208 + }
1.209 +
1.210 +#ifdef DEBUG
1.211 + bool IsInFlushLoop()
1.212 + {
1.213 + return mRunFlushLoopOnStack;
1.214 + }
1.215 +#endif
1.216 +
1.217 + void RunScript(nsIContent* aScriptElement);
1.218 +
1.219 + /**
1.220 + * Flush the operations from the tree operations from the argument
1.221 + * queue unconditionally. (This is for the main thread case.)
1.222 + */
1.223 + virtual void MoveOpsFrom(nsTArray<nsHtml5TreeOperation>& aOpQueue);
1.224 +
1.225 + nsHtml5TreeOpStage* GetStage()
1.226 + {
1.227 + return &mStage;
1.228 + }
1.229 +
1.230 + void StartReadingFromStage()
1.231 + {
1.232 + mReadingFromStage = true;
1.233 + }
1.234 +
1.235 + void StreamEnded();
1.236 +
1.237 +#ifdef DEBUG
1.238 + void AssertStageEmpty()
1.239 + {
1.240 + mStage.AssertEmpty();
1.241 + }
1.242 +#endif
1.243 +
1.244 + nsIURI* GetViewSourceBaseURI();
1.245 +
1.246 + void PreloadScript(const nsAString& aURL,
1.247 + const nsAString& aCharset,
1.248 + const nsAString& aType,
1.249 + const nsAString& aCrossOrigin,
1.250 + bool aScriptFromHead);
1.251 +
1.252 + void PreloadStyle(const nsAString& aURL, const nsAString& aCharset,
1.253 + const nsAString& aCrossOrigin);
1.254 +
1.255 + void PreloadImage(const nsAString& aURL, const nsAString& aCrossOrigin);
1.256 +
1.257 + void SetSpeculationBase(const nsAString& aURL);
1.258 +
1.259 + static void InitializeStatics();
1.260 +
1.261 + private:
1.262 + nsHtml5Parser* GetParser();
1.263 +
1.264 + bool IsExternalViewSource();
1.265 +
1.266 + /**
1.267 + * Get a nsIURI for an nsString if the URL hasn't been preloaded yet.
1.268 + */
1.269 + already_AddRefed<nsIURI> ConvertIfNotPreloadedYet(const nsAString& aURL);
1.270 +
1.271 +};
1.272 +
1.273 +#endif // nsHtml5TreeOpExecutor_h
