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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "txResultRecycler.h"
#include "txExprResult.h"
#include "txNodeSet.h"
txResultRecycler::txResultRecycler()
: mEmptyStringResult(new StringResult(nullptr)),
mTrueResult(new BooleanResult(true)),
mFalseResult(new BooleanResult(false)) {}
txResultRecycler::~txResultRecycler() {
txStackIterator stringIter(&mStringResults);
while (stringIter.hasNext()) {
delete static_cast<StringResult*>(stringIter.next());
}
txStackIterator nodesetIter(&mNodeSetResults);
while (nodesetIter.hasNext()) {
delete static_cast<txNodeSet*>(nodesetIter.next());
}
txStackIterator numberIter(&mNumberResults);
while (numberIter.hasNext()) {
delete static_cast<NumberResult*>(numberIter.next());
}
}
void txResultRecycler::recycle(txAExprResult* aResult) {
NS_ASSERTION(aResult->mRefCnt == 0, "In-use txAExprResult recycled");
RefPtr<txResultRecycler> kungFuDeathGrip;
aResult->mRecycler.swap(kungFuDeathGrip);
switch (aResult->getResultType()) {
case txAExprResult::STRING: {
mStringResults.push(static_cast<StringResult*>(aResult));
return;
}
case txAExprResult::NODESET: {
static_cast<txNodeSet*>(aResult)->clear();
mNodeSetResults.push(static_cast<txNodeSet*>(aResult));
return;
}
case txAExprResult::NUMBER: {
mNumberResults.push(static_cast<NumberResult*>(aResult));
return;
}
default: {
delete aResult;
}
}
}
nsresult txResultRecycler::getStringResult(StringResult** aResult) {
if (mStringResults.isEmpty()) {
*aResult = new StringResult(this);
} else {
*aResult = static_cast<StringResult*>(mStringResults.pop());
(*aResult)->mValue.Truncate();
(*aResult)->mRecycler = this;
}
NS_ADDREF(*aResult);
return NS_OK;
}
nsresult txResultRecycler::getStringResult(const nsAString& aValue,
txAExprResult** aResult) {
if (mStringResults.isEmpty()) {
*aResult = new StringResult(aValue, this);
} else {
StringResult* strRes = static_cast<StringResult*>(mStringResults.pop());
strRes->mValue = aValue;
strRes->mRecycler = this;
*aResult = strRes;
}
NS_ADDREF(*aResult);
return NS_OK;
}
void txResultRecycler::getEmptyStringResult(txAExprResult** aResult) {
*aResult = mEmptyStringResult;
NS_ADDREF(*aResult);
}
nsresult txResultRecycler::getNodeSet(txNodeSet** aResult) {
if (mNodeSetResults.isEmpty()) {
*aResult = new txNodeSet(this);
} else {
*aResult = static_cast<txNodeSet*>(mNodeSetResults.pop());
(*aResult)->mRecycler = this;
}
NS_ADDREF(*aResult);
return NS_OK;
}
nsresult txResultRecycler::getNodeSet(txNodeSet* aNodeSet,
txNodeSet** aResult) {
if (mNodeSetResults.isEmpty()) {
*aResult = new txNodeSet(*aNodeSet, this);
} else {
*aResult = static_cast<txNodeSet*>(mNodeSetResults.pop());
(*aResult)->append(*aNodeSet);
(*aResult)->mRecycler = this;
}
NS_ADDREF(*aResult);
return NS_OK;
}
nsresult txResultRecycler::getNodeSet(const txXPathNode& aNode,
txAExprResult** aResult) {
if (mNodeSetResults.isEmpty()) {
*aResult = new txNodeSet(aNode, this);
} else {
txNodeSet* nodes = static_cast<txNodeSet*>(mNodeSetResults.pop());
nodes->append(aNode);
nodes->mRecycler = this;
*aResult = nodes;
}
NS_ADDREF(*aResult);
return NS_OK;
}
nsresult txResultRecycler::getNumberResult(double aValue,
txAExprResult** aResult) {
if (mNumberResults.isEmpty()) {
*aResult = new NumberResult(aValue, this);
} else {
NumberResult* numRes = static_cast<NumberResult*>(mNumberResults.pop());
numRes->value = aValue;
numRes->mRecycler = this;
*aResult = numRes;
}
NS_ADDREF(*aResult);
return NS_OK;
}
void txResultRecycler::getBoolResult(bool aValue, txAExprResult** aResult) {
*aResult = aValue ? mTrueResult : mFalseResult;
NS_ADDREF(*aResult);
}
nsresult txResultRecycler::getNonSharedNodeSet(txNodeSet* aNodeSet,
txNodeSet** aResult) {
if (aNodeSet->mRefCnt > 1) {
return getNodeSet(aNodeSet, aResult);
}
*aResult = aNodeSet;
NS_ADDREF(*aResult);
return NS_OK;
}
void txAExprResult::Release() {
--mRefCnt;
NS_LOG_RELEASE(this, mRefCnt, "txAExprResult");
if (mRefCnt == 0) {
if (mRecycler) {
mRecycler->recycle(this);
} else {
delete this;
}
}
}