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** This file is part of the QtXmlPatterns module of the Qt Toolkit. | |
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#include "qpatternistlocale_p.h" | |
#include "qabstractfunctionfactory_p.h" | |
QT_BEGIN_NAMESPACE | |
using namespace QPatternist; | |
Expression::Ptr AbstractFunctionFactory::createFunctionCall(const QXmlName name, | |
const Expression::List &args, | |
const StaticContext::Ptr &context, | |
const SourceLocationReflection *const r) | |
{ | |
const FunctionSignature::Ptr sign(retrieveFunctionSignature(context->namePool(), name)); | |
if(!sign) /* The function doesn't exist(at least not in this factory). */ | |
return Expression::Ptr(); | |
/* May throw. */ | |
verifyArity(sign, context, args.count(), r); | |
/* Ok, the function does exist and the arity is correct. */ | |
return retrieveExpression(name, args, sign); | |
} | |
void AbstractFunctionFactory::verifyArity(const FunctionSignature::Ptr &s, | |
const StaticContext::Ptr &context, | |
const xsInteger arity, | |
const SourceLocationReflection *const r) const | |
{ | |
/* Same code in both branches, but more specific error messages in order | |
* to improve usability. */ | |
if(s->maximumArguments() != FunctionSignature::UnlimitedArity && | |
arity > s->maximumArguments()) | |
{ | |
context->error(QtXmlPatterns::tr("%1 takes at most %n argument(s). " | |
"%2 is therefore invalid.", 0, s->maximumArguments()) | |
.arg(formatFunction(context->namePool(), s)) | |
.arg(arity), | |
ReportContext::XPST0017, | |
r); | |
return; | |
} | |
if(arity < s->minimumArguments()) | |
{ | |
context->error(QtXmlPatterns::tr("%1 requires at least %n argument(s). " | |
"%2 is therefore invalid.", 0, s->minimumArguments()) | |
.arg(formatFunction(context->namePool(), s)) | |
.arg(arity), | |
ReportContext::XPST0017, | |
r); | |
return; | |
} | |
} | |
FunctionSignature::Hash AbstractFunctionFactory::functionSignatures() const | |
{ | |
return m_signatures; | |
} | |
QT_END_NAMESPACE |