зеркало из https://github.com/mozilla/gecko-dev.git
151 строка
4.0 KiB
C++
151 строка
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1999 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsCSSKeywords.h"
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#include "nsString.h"
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#include "nsAVLTree.h"
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// define an array of all CSS keywords
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#define CSS_KEY(_key) #_key,
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const char* kCSSRawKeywords[] = {
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#include "nsCSSKeywordList.h"
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};
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#undef CSS_KEY
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struct KeywordNode {
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KeywordNode(void)
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: mStr(),
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mEnum(eCSSKeyword_UNKNOWN)
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{}
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KeywordNode(const nsStr& aStringValue, nsCSSKeyword aEnumValue)
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: mStr(),
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mEnum(aEnumValue)
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{ // point to the incomming buffer
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// note that the incomming buffer may really be 2 byte
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nsStr::Initialize(mStr, aStringValue.mStr, aStringValue.mCapacity,
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aStringValue.mLength, aStringValue.mCharSize, PR_FALSE);
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}
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nsCAutoString mStr;
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nsCSSKeyword mEnum;
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};
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class KeywordComparitor: public nsAVLNodeComparitor {
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public:
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virtual ~KeywordComparitor(void) {}
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virtual PRInt32 operator()(void* anItem1,void* anItem2) {
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KeywordNode* one = (KeywordNode*)anItem1;
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KeywordNode* two = (KeywordNode*)anItem2;
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return one->mStr.CompareWithConversion(two->mStr, PR_TRUE);
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}
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};
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static PRInt32 gTableRefCount;
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static KeywordNode* gKeywordArray;
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static nsAVLTree* gKeywordTree;
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static KeywordComparitor* gComparitor;
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static nsCString* kNullStr;
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void
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nsCSSKeywords::AddRefTable(void)
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{
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if (0 == gTableRefCount++) {
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if (! gKeywordArray) {
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gKeywordArray = new KeywordNode[eCSSKeyword_COUNT];
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gComparitor = new KeywordComparitor();
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if (gComparitor) {
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gKeywordTree = new nsAVLTree(*gComparitor, nsnull);
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}
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if (gKeywordArray && gKeywordTree) {
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PRInt32 index = -1;
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while (++index < PRInt32(eCSSKeyword_COUNT)) {
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gKeywordArray[index].mStr = kCSSRawKeywords[index];
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gKeywordArray[index].mStr.ReplaceChar('_', '-');
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gKeywordArray[index].mEnum = nsCSSKeyword(index);
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gKeywordTree->AddItem(&(gKeywordArray[index]));
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}
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}
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}
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kNullStr = new nsCString();
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}
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}
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void
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nsCSSKeywords::ReleaseTable(void)
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{
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if (0 == --gTableRefCount) {
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if (gKeywordArray) {
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delete [] gKeywordArray;
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gKeywordArray = nsnull;
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}
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if (gKeywordTree) {
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delete gKeywordTree;
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gKeywordTree = nsnull;
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}
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if (gComparitor) {
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delete gComparitor;
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gComparitor = nsnull;
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}
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delete kNullStr;
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}
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}
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nsCSSKeyword
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nsCSSKeywords::LookupKeyword(const nsCString& aKeyword)
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{
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NS_ASSERTION(gKeywordTree, "no lookup table, needs addref");
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if (gKeywordTree) {
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KeywordNode node(aKeyword, eCSSKeyword_UNKNOWN);
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KeywordNode* found = (KeywordNode*)gKeywordTree->FindItem(&node);
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if (found) {
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NS_ASSERTION(found->mStr.EqualsIgnoreCase(aKeyword), "bad tree");
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return found->mEnum;
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}
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}
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return eCSSKeyword_UNKNOWN;
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}
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nsCSSKeyword
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nsCSSKeywords::LookupKeyword(const nsString& aKeyword) {
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nsCAutoString theKeyword; theKeyword.AssignWithConversion(aKeyword);
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return LookupKeyword(theKeyword);
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}
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const nsCString&
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nsCSSKeywords::GetStringValue(nsCSSKeyword aKeyword)
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{
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NS_ASSERTION(gKeywordArray, "no lookup table, needs addref");
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if ((eCSSKeyword_UNKNOWN < aKeyword) &&
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(aKeyword < eCSSKeyword_COUNT) && gKeywordArray) {
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return gKeywordArray[aKeyword].mStr;
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}
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else {
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return *kNullStr;
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}
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}
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