mirror of
https://github.com/mozilla/gecko-dev.git
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0d2808c511
Moved nsFileSpec and related classes into this obsolete library. Moved nsRegistry and related libreg functionality into the obsolete library. Updated many callers using the obsolete nsFile spec to use nsIFile and Necko to do file IO. Combined the following DLLs (source -> dest) uriloader -> docshell shistory -> docshell jsurl -> jsdom gkview -> gklayout Moved nsAdapterEnumerator out of xpcom/ds and into mailnews, since they're the only consumer Modifed the xpt_link tool so that you can specify a �only include� cid list that can mask CID�s that you are not interested in. Added build options: Prevent the building of xpinstall (--disable-xpinstall) Prevent the building js component loader (--disable-jsloader) A build option to only build a single profile (--enable-single-profile) A build flag to only built the required xpfe components (--disable-xpfe-components). Removal or hiding of unused functions and classes including nsEscape*, nsDequeIterator, nsRecyclingAllocatorImpl, nsDiscriminatedUnion, nsOpaqueKey, nsCRT::strlen, NS_NewCommandLineService Bug 194240, r/sr = darin, alec.
305 lines
8.5 KiB
C++
305 lines
8.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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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 class is defines the basic notion of a token
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* within our system. All other tokens are derived from
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* this one. It offers a few basic interfaces, but the
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* most important is consume(). The consume() method gets
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* called during the tokenization process when an instance
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* of that particular token type gets detected in the
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* input stream.
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*
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* CToken objects that are allocated from the heap _must_ be allocated
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* using the nsTokenAllocator: the nsTokenAllocator object uses an
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* arena to manage the tokens.
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*
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* The nsTokenAllocator object's arena implementation requires
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* object size at destruction time to properly recycle the object;
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* therefore, CToken::operator delete() is not public. Instead,
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* heap-allocated tokens should be destroyed using the static
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* Destroy() method, which accepts a token and the arena from which
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* the token was allocated.
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*
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* Leaf classes (that are actually instantiated from the heap) must
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* implement the SizeOf() method, which Destroy() uses to determine
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* the size of the token in order to properly recycle it.
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*/
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#ifndef CTOKEN__
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#define CTOKEN__
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#include "prtypes.h"
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#include "nsString.h"
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#include "nsError.h"
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#include "nsFixedSizeAllocator.h"
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#define NS_HTMLTOKENS_NOT_AN_ENTITY \
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NS_ERROR_GENERATE_SUCCESS(NS_ERROR_MODULE_HTMLPARSER,2000)
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class nsScanner;
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class nsTokenAllocator;
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enum eContainerInfo {
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eWellFormed,
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eMalformed,
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eFormUnknown
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};
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/**
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* Implement the SizeOf() method; leaf classes derived from CToken
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* must declare this.
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*/
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#define CTOKEN_IMPL_SIZEOF \
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protected: \
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virtual size_t SizeOf() const { return sizeof(*this); } \
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public:
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/**
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* Token objects represent sequences of characters as they
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* are consumed from the input stream (URL). While they're
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* pretty general in nature, we use subclasses (found in
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* nsHTMLTokens.h) to define <start>, </end>, <text>,
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* <comment>, <&entity>, <newline>, and <whitespace> tokens.
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*
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* @update gess 3/25/98
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*/
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class CToken {
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public:
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enum eTokenOrigin {eSource,eResidualStyle};
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protected:
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// nsTokenAllocator should be the only class that tries to
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// allocate tokens from the heap.
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friend class nsTokenAllocator;
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/**
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*
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* @update harishd 08/01/00
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* @param aSize -
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* @param aArena - Allocate memory from this pool.
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*/
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static void * operator new (size_t aSize,nsFixedSizeAllocator& anArena) CPP_THROW_NEW
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{
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return anArena.Alloc(aSize);
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}
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/**
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* Hide operator delete; clients should use Destroy() instead.
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*/
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static void operator delete (void*,size_t) {}
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public:
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/**
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* destructor
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* @update gess5/11/98
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*/
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virtual ~CToken();
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/**
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* Destroy a token.
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*/
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static void Destroy(CToken* aToken,nsFixedSizeAllocator& aArenaPool)
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{
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size_t sz = aToken->SizeOf();
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aToken->~CToken();
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aArenaPool.Free(aToken, sz);
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}
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/**
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* Make a note on number of times you have been referenced
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* @update harishd 08/02/00
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*/
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void AddRef() { ++mUseCount; }
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/**
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* Free yourself if no one is holding you.
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* @update harishd 08/02/00
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*/
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void Release(nsFixedSizeAllocator& aArenaPool) {
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if(--mUseCount==0)
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Destroy(this, aArenaPool);
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}
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/**
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* Default constructor
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* @update gess7/21/98
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*/
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CToken(PRInt32 aTag=0);
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/**
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* Retrieve string value of the token
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* @update gess5/11/98
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* @return reference to string containing string value
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*/
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virtual const nsAString& GetStringValue(void) = 0;
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/**
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* Get string of full contents, suitable for debug dump.
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* It should look exactly like the input source.
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* @update gess5/11/98
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* @return reference to string containing string value
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*/
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virtual void GetSource(nsString& anOutputString);
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/** @update harishd 03/23/00
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* @return reference to string containing string value
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*/
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virtual void AppendSourceTo(nsAString& anOutputString);
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/**
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* Sets the ordinal value of this token (not currently used)
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* @update gess5/11/98
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* @param value is the new ord value for this token
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*/
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virtual void SetTypeID(PRInt32 aValue);
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/**
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* Getter which retrieves the current ordinal value for this token
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* @update gess5/11/98
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* @return current ordinal value
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*/
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virtual PRInt32 GetTypeID(void);
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/**
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* Getter which retrieves the current attribute count for this token
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* @update gess5/11/98
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* @return current attribute count
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*/
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virtual PRInt16 GetAttributeCount(void);
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/**
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* Causes token to consume data from given scanner.
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* Note that behavior varies wildly between CToken subclasses.
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* @update gess5/11/98
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* @param aChar -- most recent char consumed
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* @param aScanner -- input source where token should get data
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* @return error code (0 means ok)
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*/
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virtual nsresult Consume(PRUnichar aChar,nsScanner& aScanner,PRInt32 aMode);
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/**
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* Getter which retrieves type of token
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* @update gess5/11/98
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* @return int containing token type
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*/
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virtual PRInt32 GetTokenType(void);
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/**
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* Getter which retrieves the class name for this token
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* This method is only used for debug purposes.
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* @update gess5/11/98
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* @return const char* containing class name
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*/
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virtual const char* GetClassName(void);
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/**
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* For tokens who care, this can tell us whether the token is
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* well formed or not.
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*
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* @update gess 8/30/00
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* @return PR_FALSE; subclasses MUST override if they care.
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*/
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virtual PRBool IsWellFormed(void) const {return PR_FALSE;}
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virtual PRBool IsEmpty(void) { return PR_FALSE; }
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/**
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* If aValue is TRUE then the token represents a short-hand tag
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*/
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virtual void SetEmpty(PRBool aValue) { return ; }
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PRInt32 GetNewlineCount()
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{
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return mNewlineCount;
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}
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void SetNewlineCount(PRInt32 aCount)
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{
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mNewlineCount = aCount;
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}
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PRInt32 GetLineNumber()
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{
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return mLineNumber;
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}
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void SetLineNumber(PRInt32 aLineNumber)
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{
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mLineNumber = mLineNumber == 0 ? aLineNumber : mLineNumber;
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}
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void SetAttributeCount(PRInt16 aValue) { mAttrCount = aValue; }
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/**
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* perform self test.
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* @update gess5/11/98
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*/
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virtual void SelfTest(void);
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static int GetTokenCount();
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protected:
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/**
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* Returns the size of the token object.
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*/
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virtual size_t SizeOf() const = 0;
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PRInt32 mTypeID;
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PRInt32 mUseCount;
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PRInt32 mNewlineCount;
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PRInt32 mLineNumber;
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PRInt16 mAttrCount;
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};
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#endif
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