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39
40#include "qpatternistlocale_p.h"
41
42#include "qabstractfunctionfactory_p.h"
43
44QT_BEGIN_NAMESPACE
45
46using namespace QPatternist;
47
48Expression::Ptr AbstractFunctionFactory::createFunctionCall(const QXmlName name,
49 const Expression::List &args,
50 const StaticContext::Ptr &context,
51 const SourceLocationReflection *const r)
52{
53 const FunctionSignature::Ptr sign(retrieveFunctionSignature(np: context->namePool(), name));
54
55 if(!sign) /* The function doesn't exist(at least not in this factory). */
56 return Expression::Ptr();
57
58 /* May throw. */
59 verifyArity(sign, context, arity: args.count(), r);
60
61 /* Ok, the function does exist and the arity is correct. */
62 return retrieveExpression(name, args, sign);
63}
64
65void AbstractFunctionFactory::verifyArity(const FunctionSignature::Ptr &s,
66 const StaticContext::Ptr &context,
67 const xsInteger arity,
68 const SourceLocationReflection *const r) const
69{
70 /* Same code in both branches, but more specific error messages in order
71 * to improve usability. */
72 if(s->maximumArguments() != FunctionSignature::UnlimitedArity &&
73 arity > s->maximumArguments())
74 {
75 context->error(message: QtXmlPatterns::tr(sourceText: "%1 takes at most %n argument(s). "
76 "%2 is therefore invalid.", disambiguation: 0, n: s->maximumArguments())
77 .arg(a: formatFunction(np: context->namePool(), func: s))
78 .arg(a: arity),
79 errorCode: ReportContext::XPST0017,
80 reflection: r);
81 return;
82 }
83
84 if(arity < s->minimumArguments())
85 {
86 context->error(message: QtXmlPatterns::tr(sourceText: "%1 requires at least %n argument(s). "
87 "%2 is therefore invalid.", disambiguation: 0, n: s->minimumArguments())
88 .arg(a: formatFunction(np: context->namePool(), func: s))
89 .arg(a: arity),
90 errorCode: ReportContext::XPST0017,
91 reflection: r);
92 return;
93 }
94}
95
96FunctionSignature::Hash AbstractFunctionFactory::functionSignatures() const
97{
98 return m_signatures;
99}
100
101QT_END_NAMESPACE
102

source code of qtxmlpatterns/src/xmlpatterns/functions/qabstractfunctionfactory.cpp