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07efe4a953
In modern C++, static constexpr member variables are automatically inline (aka weak) so the template trick is not needed. This also avoid duplication and reduces the amount of parsed code. No impact on generated binary (actually: smaller debuginfo, close to identical binary). Differential Revision: https://phabricator.services.mozilla.com/D247825
139 lines
4.2 KiB
C++
139 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsIContentSink_h___
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#define nsIContentSink_h___
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/**
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* MODULE NOTES:
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* @update gess 4/1/98
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*
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* This pure virtual interface is used as the "glue" that connects the parsing
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* process to the content model construction process.
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*
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* The icontentsink interface is a very lightweight wrapper that represents the
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* content-sink model building process. There is another one that you may care
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* about more, which is the IHTMLContentSink interface. (See that file for
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* details).
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*/
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#include "nsISupports.h"
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#include "nsString.h"
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#include "mozilla/FlushType.h"
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#include "mozilla/NotNull.h"
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#include "nsIDTD.h"
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class nsParserBase;
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namespace mozilla {
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class Encoding;
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}
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#define NS_ICONTENT_SINK_IID \
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{0xcf9a7cbb, 0xfcbc, 0x4e13, {0x8e, 0xf5, 0x18, 0xef, 0x2d, 0x3d, 0x58, 0x29}}
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class nsIContentSink : public nsISupports {
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protected:
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using Encoding = mozilla::Encoding;
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template <typename T>
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using NotNull = mozilla::NotNull<T>;
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public:
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NS_INLINE_DECL_STATIC_IID(NS_ICONTENT_SINK_IID)
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/**
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* This method is called by the parser when it is entered from
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* the event loop. The content sink wants to know how long the
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* parser has been active since we last processed events on the
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* main event loop and this call calibrates that measurement.
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*/
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NS_IMETHOD WillParse(void) = 0;
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/**
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* This method gets called when the parser begins the process
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* of building the content model via the content sink.
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*
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* Default implementation provided since the sink should have the option of
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* doing nothing in response to this call.
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*
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* @update 5/7/98 gess
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*/
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NS_IMETHOD WillBuildModel(nsDTDMode aDTDMode) { return NS_OK; }
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/**
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* This method gets called when the parser concludes the process
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* of building the content model via the content sink.
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*
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* Default implementation provided since the sink should have the option of
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* doing nothing in response to this call.
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*
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* @update 5/7/98 gess
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*/
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NS_IMETHOD DidBuildModel(bool aTerminated) { return NS_OK; }
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/**
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* This method gets called when the parser gets i/o blocked,
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* and wants to notify the sink that it may be a while before
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* more data is available.
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*
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* @update 5/7/98 gess
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*/
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NS_IMETHOD WillInterrupt(void) = 0;
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/**
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* This method gets called when the parser i/o gets unblocked,
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* and we're about to start dumping content again to the sink.
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*/
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virtual void WillResume() = 0;
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/**
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* This method returns nullptr unless `this` can
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* be cast as nsHtml5TreeOpExecutor.
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*/
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virtual nsIContentSink* AsExecutor() { return nullptr; }
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/**
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* This method gets called by the parser so that the content
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* sink can retain a reference to the parser. The expectation
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* is that the content sink will drop the reference when it
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* gets the DidBuildModel notification i.e. when parsing is done.
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*/
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NS_IMETHOD SetParser(nsParserBase* aParser) = 0;
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/**
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* Flush content so that the content model is in sync with the state
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* of the sink.
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*
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* @param aType the type of flush to perform
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*/
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virtual void FlushPendingNotifications(mozilla::FlushType aType) = 0;
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/**
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* Set the document character set. This should be passed on to the
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* document itself.
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*/
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virtual void SetDocumentCharset(NotNull<const Encoding*> aEncoding) = 0;
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/**
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* Returns the target object (often a document object) into which
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* the content built by this content sink is being added, if any
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* (IOW, may return null).
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*/
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virtual nsISupports* GetTarget() = 0;
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/**
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* Returns true if there's currently script executing that we need to hold
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* parsing for.
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*/
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virtual bool IsScriptExecuting() { return false; }
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virtual void ContinueParsingDocumentAfterCurrentScript() {};
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/**
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* Posts a runnable that continues parsing.
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*/
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virtual void ContinueInterruptedParsingAsync() {}
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virtual void InitialTranslationCompleted() {}
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};
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#endif /* nsIContentSink_h___ */
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