dom/xslt/xpath/txUnionExpr.cpp@97036ab72558 (annotated)
dom/xslt/xpath/txUnionExpr.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "txExpr.h" |
| michael@0 | 7 | #include "txIXPathContext.h" |
| michael@0 | 8 | #include "txNodeSet.h" |
| michael@0 | 9 | |
| michael@0 | 10 | //-------------/ |
| michael@0 | 11 | //- UnionExpr -/ |
| michael@0 | 12 | //-------------/ |
| michael@0 | 13 | |
| michael@0 | 14 | //-----------------------------/ |
| michael@0 | 15 | //- Virtual methods from Expr -/ |
| michael@0 | 16 | //-----------------------------/ |
| michael@0 | 17 | |
| michael@0 | 18 | /** |
| michael@0 | 19 | * Evaluates this Expr based on the given context node and processor state |
| michael@0 | 20 | * @param context the context node for evaluation of this Expr |
| michael@0 | 21 | * @param ps the ContextState containing the stack information needed |
| michael@0 | 22 | * for evaluation |
| michael@0 | 23 | * @return the result of the evaluation |
| michael@0 | 24 | **/ |
| michael@0 | 25 | nsresult |
| michael@0 | 26 | UnionExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult) |
| michael@0 | 27 | { |
| michael@0 | 28 | *aResult = nullptr; |
| michael@0 | 29 | nsRefPtr<txNodeSet> nodes; |
| michael@0 | 30 | nsresult rv = aContext->recycler()->getNodeSet(getter_AddRefs(nodes)); |
| michael@0 | 31 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 32 | |
| michael@0 | 33 | uint32_t i, len = mExpressions.Length(); |
| michael@0 | 34 | for (i = 0; i < len; ++i) { |
| michael@0 | 35 | nsRefPtr<txAExprResult> exprResult; |
| michael@0 | 36 | rv = mExpressions[i]->evaluate(aContext, getter_AddRefs(exprResult)); |
| michael@0 | 37 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 38 | |
| michael@0 | 39 | if (exprResult->getResultType() != txAExprResult::NODESET) { |
| michael@0 | 40 | //XXX ErrorReport: report nonnodeset error |
| michael@0 | 41 | return NS_ERROR_XSLT_NODESET_EXPECTED; |
| michael@0 | 42 | } |
| michael@0 | 43 | |
| michael@0 | 44 | nsRefPtr<txNodeSet> resultSet, ownedSet; |
| michael@0 | 45 | resultSet = static_cast<txNodeSet*> |
| michael@0 | 46 | (static_cast<txAExprResult*>(exprResult)); |
| michael@0 | 47 | exprResult = nullptr; |
| michael@0 | 48 | rv = aContext->recycler()-> |
| michael@0 | 49 | getNonSharedNodeSet(resultSet, getter_AddRefs(ownedSet)); |
| michael@0 | 50 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 51 | |
| michael@0 | 52 | rv = nodes->addAndTransfer(ownedSet); |
| michael@0 | 53 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 54 | } |
| michael@0 | 55 | |
| michael@0 | 56 | *aResult = nodes; |
| michael@0 | 57 | NS_ADDREF(*aResult); |
| michael@0 | 58 | |
| michael@0 | 59 | return NS_OK; |
| michael@0 | 60 | } //-- evaluate |
| michael@0 | 61 | |
| michael@0 | 62 | Expr::ExprType |
| michael@0 | 63 | UnionExpr::getType() |
| michael@0 | 64 | { |
| michael@0 | 65 | return UNION_EXPR; |
| michael@0 | 66 | } |
| michael@0 | 67 | |
| michael@0 | 68 | TX_IMPL_EXPR_STUBS_LIST(UnionExpr, NODESET_RESULT, mExpressions) |
| michael@0 | 69 | |
| michael@0 | 70 | bool |
| michael@0 | 71 | UnionExpr::isSensitiveTo(ContextSensitivity aContext) |
| michael@0 | 72 | { |
| michael@0 | 73 | uint32_t i, len = mExpressions.Length(); |
| michael@0 | 74 | for (i = 0; i < len; ++i) { |
| michael@0 | 75 | if (mExpressions[i]->isSensitiveTo(aContext)) { |
| michael@0 | 76 | return true; |
| michael@0 | 77 | } |
| michael@0 | 78 | } |
| michael@0 | 79 | |
| michael@0 | 80 | return false; |
| michael@0 | 81 | } |
| michael@0 | 82 | |
| michael@0 | 83 | #ifdef TX_TO_STRING |
| michael@0 | 84 | void |
| michael@0 | 85 | UnionExpr::toString(nsAString& dest) |
| michael@0 | 86 | { |
| michael@0 | 87 | uint32_t i; |
| michael@0 | 88 | for (i = 0; i < mExpressions.Length(); ++i) { |
| michael@0 | 89 | if (i > 0) |
| michael@0 | 90 | dest.AppendLiteral(" | "); |
| michael@0 | 91 | mExpressions[i]->toString(dest); |
| michael@0 | 92 | } |
| michael@0 | 93 | } |
| michael@0 | 94 | #endif |
