LCOV - app.info - content/base/src/nsMappedAttributes.cpp

LCOV - code coverage report
| Current view: | directory - content/base/src - nsMappedAttributes.cpp (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 112 | 0 | 0.0 %
| Date: | 2012-04-21 | Functions: | 19 | 0 | 0.0 %

           1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
           2                 : /* ***** BEGIN LICENSE BLOCK *****
           3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           4                 :  *
           5                 :  * The contents of this file are subject to the Mozilla Public License Version
           6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           7                 :  * the License. You may obtain a copy of the License at
           8                 :  * http://www.mozilla.org/MPL/
           9                 :  *
          10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          12                 :  * for the specific language governing rights and limitations under the
          13                 :  * License.
          14                 :  *
          15                 :  * The Original Code is mozilla.org code.
          16                 :  *
          17                 :  * The Initial Developer of the Original Code is
          18                 :  * IBM Corporation.
          19                 :  * Portions created by the Initial Developer are Copyright (C) 2004
          20                 :  * IBM Corporation. All Rights Reserved.
          21                 :  *
          22                 :  * Contributor(s):
          23                 :  *   IBM Corporation
          24                 :  *
          25                 :  * Alternatively, the contents of this file may be used under the terms of
          26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
          27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          29                 :  * of those above. If you wish to allow use of your version of this file only
          30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          31                 :  * use your version of this file under the terms of the MPL, indicate your
          32                 :  * decision by deleting the provisions above and replace them with the notice
          33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          34                 :  * the provisions above, a recipient may use your version of this file under
          35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          36                 :  *
          37                 :  * ***** END LICENSE BLOCK ***** */
          38                 :
          39                 : /*
          40                 :  * A unique per-element set of attributes that is used as an
          41                 :  * nsIStyleRule; used to implement presentational attributes.
          42                 :  */
          43                 :
          44                 : #include "nsMappedAttributes.h"
          45                 : #include "nsHTMLStyleSheet.h"
          46                 : #include "nsRuleWalker.h"
          47                 : #include "prmem.h"
          48                 : #include "mozilla/HashFunctions.h"
          49                 :
          50                 : using namespace mozilla;
          51                 :
          52               0 : nsMappedAttributes::nsMappedAttributes(nsHTMLStyleSheet* aSheet,
          53                 :                                        nsMapRuleToAttributesFunc aMapRuleFunc)
          54                 :   : mAttrCount(0),
          55                 :     mSheet(aSheet),
          56               0 :     mRuleMapper(aMapRuleFunc)
          57                 : {
          58               0 : }
          59                 :
          60               0 : nsMappedAttributes::nsMappedAttributes(const nsMappedAttributes& aCopy)
          61                 :   : mAttrCount(aCopy.mAttrCount),
          62                 :     mSheet(aCopy.mSheet),
          63               0 :     mRuleMapper(aCopy.mRuleMapper)
          64                 : {
          65               0 :   NS_ASSERTION(mBufferSize >= aCopy.mAttrCount, "can't fit attributes");
          66                 :
          67                 :   PRUint32 i;
          68               0 :   for (i = 0; i < mAttrCount; ++i) {
          69               0 :     new (&Attrs()[i]) InternalAttr(aCopy.Attrs()[i]);
          70                 :   }
          71               0 : }
          72                 :
          73               0 : nsMappedAttributes::~nsMappedAttributes()
          74                 : {
          75               0 :   if (mSheet) {
          76               0 :     mSheet->DropMappedAttributes(this);
          77                 :   }
          78                 :
          79                 :   PRUint32 i;
          80               0 :   for (i = 0; i < mAttrCount; ++i) {
          81               0 :     Attrs()[i].~InternalAttr();
          82                 :   }
          83               0 : }
          84                 :
          85                 :
          86                 : nsMappedAttributes*
          87               0 : nsMappedAttributes::Clone(bool aWillAddAttr)
          88                 : {
          89               0 :   PRUint32 extra = aWillAddAttr ? 1 : 0;
          90                 :
          91                 :   // This will call the overridden operator new
          92               0 :   return new (mAttrCount + extra) nsMappedAttributes(*this);
          93                 : }
          94                 :
          95               0 : void* nsMappedAttributes::operator new(size_t aSize, PRUint32 aAttrCount) CPP_THROW_NEW
          96                 : {
          97               0 :   NS_ASSERTION(aAttrCount > 0, "zero-attribute nsMappedAttributes requested");
          98                 :
          99                 :   // aSize will include the mAttrs buffer so subtract that.
         100                 :   void* newAttrs = ::operator new(aSize - sizeof(void*[1]) +
         101               0 :                                   aAttrCount * sizeof(InternalAttr));
         102                 :
         103                 : #ifdef DEBUG
         104               0 :   if (newAttrs) {
         105               0 :     static_cast<nsMappedAttributes*>(newAttrs)->mBufferSize = aAttrCount;
         106                 :   }
         107                 : #endif
         108                 :
         109               0 :   return newAttrs;
         110                 : }
         111                 :
         112               0 : NS_IMPL_ISUPPORTS1(nsMappedAttributes,
         113                 :                    nsIStyleRule)
         114                 :
         115                 : nsresult
         116               0 : nsMappedAttributes::SetAndTakeAttr(nsIAtom* aAttrName, nsAttrValue& aValue)
         117                 : {
         118               0 :   NS_PRECONDITION(aAttrName, "null name");
         119                 :
         120                 :   PRUint32 i;
         121               0 :   for (i = 0; i < mAttrCount && !Attrs()[i].mName.IsSmaller(aAttrName); ++i) {
         122               0 :     if (Attrs()[i].mName.Equals(aAttrName)) {
         123               0 :       Attrs()[i].mValue.Reset();
         124               0 :       Attrs()[i].mValue.SwapValueWith(aValue);
         125                 :
         126               0 :       return NS_OK;
         127                 :     }
         128                 :   }
         129                 :
         130               0 :   NS_ASSERTION(mBufferSize >= mAttrCount + 1, "can't fit attributes");
         131                 :
         132               0 :   if (mAttrCount != i) {
         133               0 :     memmove(&Attrs()[i + 1], &Attrs()[i], (mAttrCount - i) * sizeof(InternalAttr));
         134                 :   }
         135                 :
         136               0 :   new (&Attrs()[i].mName) nsAttrName(aAttrName);
         137               0 :   new (&Attrs()[i].mValue) nsAttrValue();
         138               0 :   Attrs()[i].mValue.SwapValueWith(aValue);
         139               0 :   ++mAttrCount;
         140                 :
         141               0 :   return NS_OK;
         142                 : }
         143                 :
         144                 : const nsAttrValue*
         145               0 : nsMappedAttributes::GetAttr(nsIAtom* aAttrName) const
         146                 : {
         147               0 :   NS_PRECONDITION(aAttrName, "null name");
         148                 :
         149               0 :   PRInt32 i = IndexOfAttr(aAttrName, kNameSpaceID_None);
         150               0 :   if (i >= 0) {
         151               0 :     return &Attrs()[i].mValue;
         152                 :   }
         153                 :
         154               0 :   return nsnull;
         155                 : }
         156                 :
         157                 : bool
         158               0 : nsMappedAttributes::Equals(const nsMappedAttributes* aOther) const
         159                 : {
         160               0 :   if (this == aOther) {
         161               0 :     return true;
         162                 :   }
         163                 :
         164               0 :   if (mRuleMapper != aOther->mRuleMapper || mAttrCount != aOther->mAttrCount) {
         165               0 :     return false;
         166                 :   }
         167                 :
         168                 :   PRUint32 i;
         169               0 :   for (i = 0; i < mAttrCount; ++i) {
         170               0 :     if (!Attrs()[i].mName.Equals(aOther->Attrs()[i].mName) ||
         171               0 :         !Attrs()[i].mValue.Equals(aOther->Attrs()[i].mValue)) {
         172               0 :       return false;
         173                 :     }
         174                 :   }
         175                 :
         176               0 :   return true;
         177                 : }
         178                 :
         179                 : PRUint32
         180               0 : nsMappedAttributes::HashValue() const
         181                 : {
         182               0 :   PRUint32 hash = HashGeneric(mRuleMapper);
         183                 :
         184                 :   PRUint32 i;
         185               0 :   for (i = 0; i < mAttrCount; ++i) {
         186                 :     hash = AddToHash(hash,
         187               0 :                      Attrs()[i].mName.HashValue(),
         188               0 :                      Attrs()[i].mValue.HashValue());
         189                 :   }
         190                 :
         191               0 :   return hash;
         192                 : }
         193                 :
         194                 : void
         195               0 : nsMappedAttributes::SetStyleSheet(nsHTMLStyleSheet* aSheet)
         196                 : {
         197               0 :   if (mSheet) {
         198               0 :     mSheet->DropMappedAttributes(this);
         199                 :   }
         200               0 :   mSheet = aSheet;  // not ref counted
         201               0 : }
         202                 :
         203                 : /* virtual */ void
         204               0 : nsMappedAttributes::MapRuleInfoInto(nsRuleData* aRuleData)
         205                 : {
         206               0 :   if (mRuleMapper) {
         207               0 :     (*mRuleMapper)(this, aRuleData);
         208                 :   }
         209               0 : }
         210                 :
         211                 : #ifdef DEBUG
         212                 : /* virtual */ void
         213               0 : nsMappedAttributes::List(FILE* out, PRInt32 aIndent) const
         214                 : {
         215               0 :   nsAutoString buffer;
         216                 :   PRUint32 i;
         217                 :
         218               0 :   for (i = 0; i < mAttrCount; ++i) {
         219                 :     PRInt32 indent;
         220               0 :     for (indent = aIndent; indent > 0; --indent)
         221               0 :       fputs("  ", out);
         222                 :
         223               0 :     Attrs()[i].mName.GetQualifiedName(buffer);
         224               0 :     fputs(NS_LossyConvertUTF16toASCII(buffer).get(), out);
         225                 :
         226               0 :     Attrs()[i].mValue.ToString(buffer);
         227               0 :     fputs(NS_LossyConvertUTF16toASCII(buffer).get(), out);
         228               0 :     fputs("\n", out);
         229                 :   }
         230               0 : }
         231                 : #endif
         232                 :
         233                 : void
         234               0 : nsMappedAttributes::RemoveAttrAt(PRUint32 aPos, nsAttrValue& aValue)
         235                 : {
         236               0 :   Attrs()[aPos].mValue.SwapValueWith(aValue);
         237               0 :   Attrs()[aPos].~InternalAttr();
         238               0 :   memmove(&Attrs()[aPos], &Attrs()[aPos + 1],
         239               0 :           (mAttrCount - aPos - 1) * sizeof(InternalAttr));
         240               0 :   mAttrCount--;
         241               0 : }
         242                 :
         243                 : const nsAttrName*
         244               0 : nsMappedAttributes::GetExistingAttrNameFromQName(const nsAString& aName) const
         245                 : {
         246                 :   PRUint32 i;
         247               0 :   for (i = 0; i < mAttrCount; ++i) {
         248               0 :     if (Attrs()[i].mName.IsAtom()) {
         249               0 :       if (Attrs()[i].mName.Atom()->Equals(aName)) {
         250               0 :         return &Attrs()[i].mName;
         251                 :       }
         252                 :     }
         253                 :     else {
         254               0 :       if (Attrs()[i].mName.NodeInfo()->QualifiedNameEquals(aName)) {
         255               0 :         return &Attrs()[i].mName;
         256                 :       }
         257                 :     }
         258                 :   }
         259                 :
         260               0 :   return nsnull;
         261                 : }
         262                 :
         263                 : PRInt32
         264               0 : nsMappedAttributes::IndexOfAttr(nsIAtom* aLocalName, PRInt32 aNamespaceID) const
         265                 : {
         266                 :   PRUint32 i;
         267               0 :   if (aNamespaceID == kNameSpaceID_None) {
         268                 :     // This should be the common case so lets make an optimized loop
         269               0 :     for (i = 0; i < mAttrCount; ++i) {
         270               0 :       if (Attrs()[i].mName.Equals(aLocalName)) {
         271               0 :         return i;
         272                 :       }
         273                 :     }
         274                 :   }
         275                 :   else {
         276               0 :     for (i = 0; i < mAttrCount; ++i) {
         277               0 :       if (Attrs()[i].mName.Equals(aLocalName, aNamespaceID)) {
         278               0 :         return i;
         279                 :       }
         280                 :     }
         281                 :   }
         282                 :
         283               0 :   return -1;
         284                 : }
         285                 :
         286                 : size_t
         287               0 : nsMappedAttributes::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
         288                 : {
         289               0 :   NS_ASSERTION(mAttrCount == mBufferSize,
         290                 :                "mBufferSize and mAttrCount are expected to be the same.");
         291                 :
         292               0 :   size_t n = aMallocSizeOf(this);
         293               0 :   for (PRUint16 i = 0; i < mAttrCount; ++i) {
         294               0 :     n += Attrs()[i].mValue.SizeOfExcludingThis(aMallocSizeOf);
         295                 :   }
         296               0 :   return n;
         297                 : }
         298                 :

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