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comparison: dom/xslt/xpath/txFunctionCall.cpp
dom/xslt/xpath/txFunctionCall.cpp
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| -1:000000000000 | 0:892c8893baf1 |
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| 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 "nsIAtom.h" | |
| 8 #include "txIXPathContext.h" | |
| 9 #include "txNodeSet.h" | |
| 10 | |
| 11 /** | |
| 12 * This class represents a FunctionCall as defined by the XSL Working Draft | |
| 13 **/ | |
| 14 | |
| 15 //------------------/ | |
| 16 //- Public Methods -/ | |
| 17 //------------------/ | |
| 18 | |
| 19 /* | |
| 20 * Evaluates the given Expression and converts its result to a number. | |
| 21 */ | |
| 22 // static | |
| 23 nsresult | |
| 24 FunctionCall::evaluateToNumber(Expr* aExpr, txIEvalContext* aContext, | |
| 25 double* aResult) | |
| 26 { | |
| 27 NS_ASSERTION(aExpr, "missing expression"); | |
| 28 nsRefPtr<txAExprResult> exprResult; | |
| 29 nsresult rv = aExpr->evaluate(aContext, getter_AddRefs(exprResult)); | |
| 30 NS_ENSURE_SUCCESS(rv, rv); | |
| 31 | |
| 32 *aResult = exprResult->numberValue(); | |
| 33 | |
| 34 return NS_OK; | |
| 35 } | |
| 36 | |
| 37 /* | |
| 38 * Evaluates the given Expression and converts its result to a NodeSet. | |
| 39 * If the result is not a NodeSet nullptr is returned. | |
| 40 */ | |
| 41 nsresult | |
| 42 FunctionCall::evaluateToNodeSet(Expr* aExpr, txIEvalContext* aContext, | |
| 43 txNodeSet** aResult) | |
| 44 { | |
| 45 NS_ASSERTION(aExpr, "Missing expression to evaluate"); | |
| 46 *aResult = nullptr; | |
| 47 | |
| 48 nsRefPtr<txAExprResult> exprRes; | |
| 49 nsresult rv = aExpr->evaluate(aContext, getter_AddRefs(exprRes)); | |
| 50 NS_ENSURE_SUCCESS(rv, rv); | |
| 51 | |
| 52 if (exprRes->getResultType() != txAExprResult::NODESET) { | |
| 53 aContext->receiveError(NS_LITERAL_STRING("NodeSet expected as argument"), NS_ERROR_XSLT_NODESET_EXPECTED); | |
| 54 return NS_ERROR_XSLT_NODESET_EXPECTED; | |
| 55 } | |
| 56 | |
| 57 *aResult = | |
| 58 static_cast<txNodeSet*>(static_cast<txAExprResult*>(exprRes)); | |
| 59 NS_ADDREF(*aResult); | |
| 60 | |
| 61 return NS_OK; | |
| 62 } | |
| 63 | |
| 64 bool FunctionCall::requireParams(int32_t aParamCountMin, | |
| 65 int32_t aParamCountMax, | |
| 66 txIEvalContext* aContext) | |
| 67 { | |
| 68 int32_t argc = mParams.Length(); | |
| 69 if (argc < aParamCountMin || | |
| 70 (aParamCountMax > -1 && argc > aParamCountMax)) { | |
| 71 nsAutoString err(NS_LITERAL_STRING("invalid number of parameters for function")); | |
| 72 #ifdef TX_TO_STRING | |
| 73 err.AppendLiteral(": "); | |
| 74 toString(err); | |
| 75 #endif | |
| 76 aContext->receiveError(err, NS_ERROR_XPATH_INVALID_ARG); | |
| 77 | |
| 78 return false; | |
| 79 } | |
| 80 | |
| 81 return true; | |
| 82 } | |
| 83 | |
| 84 Expr* | |
| 85 FunctionCall::getSubExprAt(uint32_t aPos) | |
| 86 { | |
| 87 return mParams.SafeElementAt(aPos); | |
| 88 } | |
| 89 | |
| 90 void | |
| 91 FunctionCall::setSubExprAt(uint32_t aPos, Expr* aExpr) | |
| 92 { | |
| 93 NS_ASSERTION(aPos < mParams.Length(), | |
| 94 "setting bad subexpression index"); | |
| 95 mParams[aPos] = aExpr; | |
| 96 } | |
| 97 | |
| 98 bool | |
| 99 FunctionCall::argsSensitiveTo(ContextSensitivity aContext) | |
| 100 { | |
| 101 uint32_t i, len = mParams.Length(); | |
| 102 for (i = 0; i < len; ++i) { | |
| 103 if (mParams[i]->isSensitiveTo(aContext)) { | |
| 104 return true; | |
| 105 } | |
| 106 } | |
| 107 | |
| 108 return false; | |
| 109 } | |
| 110 | |
| 111 #ifdef TX_TO_STRING | |
| 112 void | |
| 113 FunctionCall::toString(nsAString& aDest) | |
| 114 { | |
| 115 nsCOMPtr<nsIAtom> functionNameAtom; | |
| 116 if (NS_FAILED(getNameAtom(getter_AddRefs(functionNameAtom)))) { | |
| 117 NS_ERROR("Can't get function name."); | |
| 118 return; | |
| 119 } | |
| 120 | |
| 121 | |
| 122 | |
| 123 aDest.Append(nsDependentAtomString(functionNameAtom) + | |
| 124 NS_LITERAL_STRING("(")); | |
| 125 for (uint32_t i = 0; i < mParams.Length(); ++i) { | |
| 126 if (i != 0) { | |
| 127 aDest.Append(char16_t(',')); | |
| 128 } | |
| 129 mParams[i]->toString(aDest); | |
| 130 } | |
| 131 aDest.Append(char16_t(')')); | |
| 132 } | |
| 133 #endif |
