LCOV - code coverage report
Current view: directory - content/xslt/src/xpath - txFunctionCall.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 51 0 0.0 %
Date: 2012-06-02 Functions: 7 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is TransforMiiX XSLT processor code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * The MITRE Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1999
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Keith Visco <kvisco@ziplink.net> (Original Author)
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "txExpr.h"
      40                 : #include "nsIAtom.h"
      41                 : #include "txIXPathContext.h"
      42                 : #include "txNodeSet.h"
      43                 : 
      44                 : /**
      45                 :  * This class represents a FunctionCall as defined by the XSL Working Draft
      46                 : **/
      47                 : 
      48                 :   //------------------/
      49                 :  //- Public Methods -/
      50                 : //------------------/
      51                 : 
      52                 : /*
      53                 :  * Evaluates the given Expression and converts its result to a number.
      54                 :  */
      55                 : // static
      56                 : nsresult
      57               0 : FunctionCall::evaluateToNumber(Expr* aExpr, txIEvalContext* aContext,
      58                 :                                double* aResult)
      59                 : {
      60               0 :     NS_ASSERTION(aExpr, "missing expression");
      61               0 :     nsRefPtr<txAExprResult> exprResult;
      62               0 :     nsresult rv = aExpr->evaluate(aContext, getter_AddRefs(exprResult));
      63               0 :     NS_ENSURE_SUCCESS(rv, rv);
      64                 : 
      65               0 :     *aResult = exprResult->numberValue();
      66                 : 
      67               0 :     return NS_OK;
      68                 : }
      69                 : 
      70                 : /*
      71                 :  * Evaluates the given Expression and converts its result to a NodeSet.
      72                 :  * If the result is not a NodeSet NULL is returned.
      73                 :  */
      74                 : nsresult
      75               0 : FunctionCall::evaluateToNodeSet(Expr* aExpr, txIEvalContext* aContext,
      76                 :                                 txNodeSet** aResult)
      77                 : {
      78               0 :     NS_ASSERTION(aExpr, "Missing expression to evaluate");
      79               0 :     *aResult = nsnull;
      80                 : 
      81               0 :     nsRefPtr<txAExprResult> exprRes;
      82               0 :     nsresult rv = aExpr->evaluate(aContext, getter_AddRefs(exprRes));
      83               0 :     NS_ENSURE_SUCCESS(rv, rv);
      84                 : 
      85               0 :     if (exprRes->getResultType() != txAExprResult::NODESET) {
      86               0 :         aContext->receiveError(NS_LITERAL_STRING("NodeSet expected as argument"), NS_ERROR_XSLT_NODESET_EXPECTED);
      87               0 :         return NS_ERROR_XSLT_NODESET_EXPECTED;
      88                 :     }
      89                 : 
      90                 :     *aResult =
      91               0 :         static_cast<txNodeSet*>(static_cast<txAExprResult*>(exprRes));
      92               0 :     NS_ADDREF(*aResult);
      93                 : 
      94               0 :     return NS_OK;
      95                 : }
      96                 : 
      97               0 : bool FunctionCall::requireParams(PRInt32 aParamCountMin,
      98                 :                                    PRInt32 aParamCountMax,
      99                 :                                    txIEvalContext* aContext)
     100                 : {
     101               0 :     PRInt32 argc = mParams.Length();
     102               0 :     if (argc < aParamCountMin ||
     103                 :         (aParamCountMax > -1 && argc > aParamCountMax)) {
     104               0 :         nsAutoString err(NS_LITERAL_STRING("invalid number of parameters for function"));
     105                 : #ifdef TX_TO_STRING
     106               0 :         err.AppendLiteral(": ");
     107               0 :         toString(err);
     108                 : #endif
     109               0 :         aContext->receiveError(err, NS_ERROR_XPATH_INVALID_ARG);
     110                 : 
     111               0 :         return false;
     112                 :     }
     113                 : 
     114               0 :     return true;
     115                 : }
     116                 : 
     117                 : Expr*
     118               0 : FunctionCall::getSubExprAt(PRUint32 aPos)
     119                 : {
     120               0 :     return mParams.SafeElementAt(aPos);
     121                 : }
     122                 : 
     123                 : void
     124               0 : FunctionCall::setSubExprAt(PRUint32 aPos, Expr* aExpr)
     125                 : {
     126               0 :     NS_ASSERTION(aPos < mParams.Length(),
     127                 :                  "setting bad subexpression index");
     128               0 :     mParams[aPos] = aExpr;
     129               0 : }
     130                 : 
     131                 : bool
     132               0 : FunctionCall::argsSensitiveTo(ContextSensitivity aContext)
     133                 : {
     134               0 :     PRUint32 i, len = mParams.Length();
     135               0 :     for (i = 0; i < len; ++i) {
     136               0 :         if (mParams[i]->isSensitiveTo(aContext)) {
     137               0 :             return true;
     138                 :         }
     139                 :     }
     140                 : 
     141               0 :     return false;
     142                 : }
     143                 : 
     144                 : #ifdef TX_TO_STRING
     145                 : void
     146               0 : FunctionCall::toString(nsAString& aDest)
     147                 : {
     148               0 :     nsCOMPtr<nsIAtom> functionNameAtom;
     149               0 :     if (NS_FAILED(getNameAtom(getter_AddRefs(functionNameAtom)))) {
     150               0 :         NS_ERROR("Can't get function name.");
     151                 :         return;
     152                 :     }
     153                 : 
     154                 : 
     155                 : 
     156               0 :     aDest.Append(nsDependentAtomString(functionNameAtom) +
     157               0 :                  NS_LITERAL_STRING("("));
     158               0 :     for (PRUint32 i = 0; i < mParams.Length(); ++i) {
     159               0 :         if (i != 0) {
     160               0 :             aDest.Append(PRUnichar(','));
     161                 :         }
     162               0 :         mParams[i]->toString(aDest);
     163                 :     }
     164               0 :     aDest.Append(PRUnichar(')'));
     165                 : }
     166                 : #endif

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