dom/xslt/xpath/txFilterExpr.cpp@b8a032363ba2 (annotated)
dom/xslt/xpath/txFilterExpr.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| 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 "txNodeSet.h" |
| michael@0 | 8 | #include "txIXPathContext.h" |
| michael@0 | 9 | |
| michael@0 | 10 | //-- Implementation of FilterExpr --/ |
| michael@0 | 11 | |
| michael@0 | 12 | //-----------------------------/ |
| michael@0 | 13 | //- Virtual methods from Expr -/ |
| michael@0 | 14 | //-----------------------------/ |
| michael@0 | 15 | |
| michael@0 | 16 | /** |
| michael@0 | 17 | * Evaluates this Expr based on the given context node and processor state |
| michael@0 | 18 | * @param context the context node for evaluation of this Expr |
| michael@0 | 19 | * @param ps the ProcessorState containing the stack information needed |
| michael@0 | 20 | * for evaluation |
| michael@0 | 21 | * @return the result of the evaluation |
| michael@0 | 22 | * @see Expr |
| michael@0 | 23 | **/ |
| michael@0 | 24 | nsresult |
| michael@0 | 25 | FilterExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult) |
| michael@0 | 26 | { |
| michael@0 | 27 | *aResult = nullptr; |
| michael@0 | 28 | |
| michael@0 | 29 | nsRefPtr<txAExprResult> exprRes; |
| michael@0 | 30 | nsresult rv = expr->evaluate(aContext, getter_AddRefs(exprRes)); |
| michael@0 | 31 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 32 | |
| michael@0 | 33 | NS_ENSURE_TRUE(exprRes->getResultType() == txAExprResult::NODESET, |
| michael@0 | 34 | NS_ERROR_XSLT_NODESET_EXPECTED); |
| michael@0 | 35 | |
| michael@0 | 36 | nsRefPtr<txNodeSet> nodes = |
| michael@0 | 37 | static_cast<txNodeSet*>(static_cast<txAExprResult*>(exprRes)); |
| michael@0 | 38 | // null out exprRes so that we can test for shared-ness |
| michael@0 | 39 | exprRes = nullptr; |
| michael@0 | 40 | |
| michael@0 | 41 | nsRefPtr<txNodeSet> nonShared; |
| michael@0 | 42 | rv = aContext->recycler()->getNonSharedNodeSet(nodes, |
| michael@0 | 43 | getter_AddRefs(nonShared)); |
| michael@0 | 44 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 45 | |
| michael@0 | 46 | rv = evaluatePredicates(nonShared, aContext); |
| michael@0 | 47 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 48 | |
| michael@0 | 49 | *aResult = nonShared; |
| michael@0 | 50 | NS_ADDREF(*aResult); |
| michael@0 | 51 | |
| michael@0 | 52 | return NS_OK; |
| michael@0 | 53 | } //-- evaluate |
| michael@0 | 54 | |
| michael@0 | 55 | TX_IMPL_EXPR_STUBS_BASE(FilterExpr, NODESET_RESULT) |
| michael@0 | 56 | |
| michael@0 | 57 | Expr* |
| michael@0 | 58 | FilterExpr::getSubExprAt(uint32_t aPos) |
| michael@0 | 59 | { |
| michael@0 | 60 | if (aPos == 0) { |
| michael@0 | 61 | return expr; |
| michael@0 | 62 | } |
| michael@0 | 63 | return PredicateList::getSubExprAt(aPos - 1); |
| michael@0 | 64 | } |
| michael@0 | 65 | |
| michael@0 | 66 | void |
| michael@0 | 67 | FilterExpr::setSubExprAt(uint32_t aPos, Expr* aExpr) |
| michael@0 | 68 | { |
| michael@0 | 69 | if (aPos == 0) { |
| michael@0 | 70 | expr.forget(); |
| michael@0 | 71 | expr = aExpr; |
| michael@0 | 72 | } |
| michael@0 | 73 | else { |
| michael@0 | 74 | PredicateList::setSubExprAt(aPos - 1, aExpr); |
| michael@0 | 75 | } |
| michael@0 | 76 | } |
| michael@0 | 77 | |
| michael@0 | 78 | bool |
| michael@0 | 79 | FilterExpr::isSensitiveTo(ContextSensitivity aContext) |
| michael@0 | 80 | { |
| michael@0 | 81 | return expr->isSensitiveTo(aContext) || |
| michael@0 | 82 | PredicateList::isSensitiveTo(aContext); |
| michael@0 | 83 | } |
| michael@0 | 84 | |
| michael@0 | 85 | #ifdef TX_TO_STRING |
| michael@0 | 86 | void |
| michael@0 | 87 | FilterExpr::toString(nsAString& str) |
| michael@0 | 88 | { |
| michael@0 | 89 | if ( expr ) expr->toString(str); |
| michael@0 | 90 | else str.AppendLiteral("null"); |
| michael@0 | 91 | PredicateList::toString(str); |
| michael@0 | 92 | } |
| michael@0 | 93 | #endif |
| michael@0 | 94 |
