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6890b35c2b
The difference between the PRCList and LinkedList is that the end of a LinkedList is represented by nullptr, so we don't need to worry about getting the first element when we iterate pass the last element. The majority of the changes is due to this difference. Also, simplify do-while loops by using for-loops in nsCounterManager and nsQuoteList. MozReview-Commit-ID: CZQxqNm2Ksm --HG-- extra : rebase_source : 1a27aa5effa43a46a5d24172085c6d3502cb8c47
93 lines
2.8 KiB
C++
93 lines
2.8 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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/* implementation of quotes for the CSS 'content' property */
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#ifndef nsQuoteList_h___
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#define nsQuoteList_h___
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#include "mozilla/Attributes.h"
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#include "nsGenConList.h"
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struct nsQuoteNode : public nsGenConNode {
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// open-quote, close-quote, no-open-quote, or no-close-quote
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const nsStyleContentType mType;
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// Quote depth before this quote, which is always non-negative.
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int32_t mDepthBefore;
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nsQuoteNode(nsStyleContentType& aType, uint32_t aContentIndex)
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: nsGenConNode(aContentIndex)
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, mType(aType)
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, mDepthBefore(0)
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{
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NS_ASSERTION(aType == eStyleContentType_OpenQuote ||
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aType == eStyleContentType_CloseQuote ||
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aType == eStyleContentType_NoOpenQuote ||
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aType == eStyleContentType_NoCloseQuote,
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"incorrect type");
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NS_ASSERTION(aContentIndex <= INT32_MAX, "out of range");
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}
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virtual bool InitTextFrame(nsGenConList* aList,
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nsIFrame* aPseudoFrame, nsIFrame* aTextFrame) override;
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// is this 'open-quote' or 'no-open-quote'?
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bool IsOpenQuote() {
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return mType == eStyleContentType_OpenQuote ||
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mType == eStyleContentType_NoOpenQuote;
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}
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// is this 'close-quote' or 'no-close-quote'?
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bool IsCloseQuote() {
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return !IsOpenQuote();
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}
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// is this 'open-quote' or 'close-quote'?
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bool IsRealQuote() {
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return mType == eStyleContentType_OpenQuote ||
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mType == eStyleContentType_CloseQuote;
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}
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// Depth of the quote for *this* node. Either non-negative or -1.
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// -1 means this is a closing quote that tried to decrement the
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// counter below zero (which means no quote should be rendered).
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int32_t Depth() {
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return IsOpenQuote() ? mDepthBefore : mDepthBefore - 1;
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}
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// always non-negative
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int32_t DepthAfter() {
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return IsOpenQuote() ? mDepthBefore + 1
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: (mDepthBefore == 0 ? 0 : mDepthBefore - 1);
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}
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// The text that should be displayed for this quote.
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const nsString* Text();
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};
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class nsQuoteList : public nsGenConList {
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private:
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nsQuoteNode* FirstNode() { return static_cast<nsQuoteNode*>(mList.getFirst()); }
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public:
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// assign the correct |mDepthBefore| value to a node that has been inserted
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// Should be called immediately after calling |Insert|.
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void Calc(nsQuoteNode* aNode);
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nsQuoteNode* Next(nsQuoteNode* aNode) {
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return static_cast<nsQuoteNode*>(nsGenConList::Next(aNode));
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}
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nsQuoteNode* Prev(nsQuoteNode* aNode) {
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return static_cast<nsQuoteNode*>(nsGenConList::Prev(aNode));
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}
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void RecalcAll();
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#ifdef DEBUG
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void PrintChain();
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#endif
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};
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#endif /* nsQuoteList_h___ */
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