The Tor Browser / file comparison
comparison: dom/xslt/xpath/txFilterExpr.cpp
dom/xslt/xpath/txFilterExpr.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:bf4d3ffde5fe |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "txExpr.h" | |
| 7 #include "txNodeSet.h" | |
| 8 #include "txIXPathContext.h" | |
| 9 | |
| 10 //-- Implementation of FilterExpr --/ | |
| 11 | |
| 12 //-----------------------------/ | |
| 13 //- Virtual methods from Expr -/ | |
| 14 //-----------------------------/ | |
| 15 | |
| 16 /** | |
| 17 * Evaluates this Expr based on the given context node and processor state | |
| 18 * @param context the context node for evaluation of this Expr | |
| 19 * @param ps the ProcessorState containing the stack information needed | |
| 20 * for evaluation | |
| 21 * @return the result of the evaluation | |
| 22 * @see Expr | |
| 23 **/ | |
| 24 nsresult | |
| 25 FilterExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult) | |
| 26 { | |
| 27 *aResult = nullptr; | |
| 28 | |
| 29 nsRefPtr<txAExprResult> exprRes; | |
| 30 nsresult rv = expr->evaluate(aContext, getter_AddRefs(exprRes)); | |
| 31 NS_ENSURE_SUCCESS(rv, rv); | |
| 32 | |
| 33 NS_ENSURE_TRUE(exprRes->getResultType() == txAExprResult::NODESET, | |
| 34 NS_ERROR_XSLT_NODESET_EXPECTED); | |
| 35 | |
| 36 nsRefPtr<txNodeSet> nodes = | |
| 37 static_cast<txNodeSet*>(static_cast<txAExprResult*>(exprRes)); | |
| 38 // null out exprRes so that we can test for shared-ness | |
| 39 exprRes = nullptr; | |
| 40 | |
| 41 nsRefPtr<txNodeSet> nonShared; | |
| 42 rv = aContext->recycler()->getNonSharedNodeSet(nodes, | |
| 43 getter_AddRefs(nonShared)); | |
| 44 NS_ENSURE_SUCCESS(rv, rv); | |
| 45 | |
| 46 rv = evaluatePredicates(nonShared, aContext); | |
| 47 NS_ENSURE_SUCCESS(rv, rv); | |
| 48 | |
| 49 *aResult = nonShared; | |
| 50 NS_ADDREF(*aResult); | |
| 51 | |
| 52 return NS_OK; | |
| 53 } //-- evaluate | |
| 54 | |
| 55 TX_IMPL_EXPR_STUBS_BASE(FilterExpr, NODESET_RESULT) | |
| 56 | |
| 57 Expr* | |
| 58 FilterExpr::getSubExprAt(uint32_t aPos) | |
| 59 { | |
| 60 if (aPos == 0) { | |
| 61 return expr; | |
| 62 } | |
| 63 return PredicateList::getSubExprAt(aPos - 1); | |
| 64 } | |
| 65 | |
| 66 void | |
| 67 FilterExpr::setSubExprAt(uint32_t aPos, Expr* aExpr) | |
| 68 { | |
| 69 if (aPos == 0) { | |
| 70 expr.forget(); | |
| 71 expr = aExpr; | |
| 72 } | |
| 73 else { | |
| 74 PredicateList::setSubExprAt(aPos - 1, aExpr); | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 bool | |
| 79 FilterExpr::isSensitiveTo(ContextSensitivity aContext) | |
| 80 { | |
| 81 return expr->isSensitiveTo(aContext) || | |
| 82 PredicateList::isSensitiveTo(aContext); | |
| 83 } | |
| 84 | |
| 85 #ifdef TX_TO_STRING | |
| 86 void | |
| 87 FilterExpr::toString(nsAString& str) | |
| 88 { | |
| 89 if ( expr ) expr->toString(str); | |
| 90 else str.AppendLiteral("null"); | |
| 91 PredicateList::toString(str); | |
| 92 } | |
| 93 #endif | |
| 94 |
