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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

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    40 ****************************************************************************/

    41 

    42 #include "qpatternistlocale_p.h"

    43 

    44 #include "qabstractfunctionfactory_p.h"

    45 

    46 QT_BEGIN_NAMESPACE

    47 

    48 using namespace QPatternist;

    49 

    50 Expression::Ptr AbstractFunctionFactory::createFunctionCall(const QXmlName name,

    51                                                             const Expression::List &args,

    52                                                             const StaticContext::Ptr &context,

    53                                                             const SourceLocationReflection *const r)

    54 {

    55     const FunctionSignature::Ptr sign(retrieveFunctionSignature(context->namePool(), name));

    56 

    57     if(!sign) /* The function doesn't exist(at least not in this factory). */

    58         return Expression::Ptr();

    59 

    60     /* May throw. */

    61     verifyArity(sign, context, args.count(), r);

    62 

    63     /* Ok, the function does exist and the arity is correct. */

    64     return retrieveExpression(name, args, sign);

    65 }

    66 

    67 void AbstractFunctionFactory::verifyArity(const FunctionSignature::Ptr &s,

    68                                           const StaticContext::Ptr &context,

    69                                           const xsInteger arity,

    70                                           const SourceLocationReflection *const r) const

    71 {

    72     /* Same code in both branches, but more specific error messages in order

    73      * to improve usability. */

    74     if(s->maximumArguments() != FunctionSignature::UnlimitedArity &&

    75        arity > s->maximumArguments())

    76     {

    77         context->error(QtXmlPatterns::tr("%1 takes at most %n argument(s). "

    78                                          "%2 is therefore invalid.", 0, s->maximumArguments())

    79                           .arg(formatFunction(context->namePool(), s))

    80                           .arg(arity),

    81                        ReportContext::XPST0017,

    82                        r);

    83         return;

    84     }

    85 

    86     if(arity < s->minimumArguments())

    87     {

    88         context->error(QtXmlPatterns::tr("%1 requires at least %n argument(s). "

    89                                          "%2 is therefore invalid.", 0, s->minimumArguments())

    90                           .arg(formatFunction(context->namePool(), s))

    91                           .arg(arity),

    92                        ReportContext::XPST0017,

    93                        r);

    94         return;

    95     }

    96 }

    97 

    98 FunctionSignature::Hash AbstractFunctionFactory::functionSignatures() const

    99 {

   100     return m_signatures;

   101 }

   102 

   103 QT_END_NAMESPACE