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42 #include "qforclause_p.h"
43 #include "qfunctionfactory_p.h"
44 #include "qrangevariablereference_p.h"
46 #include "qdocumentfn_p.h"
50 using namespace QPatternist;
52 Expression::Ptr DocumentFN::typeCheck(const StaticContext::Ptr &context,
53 const SequenceType::Ptr &reqType)
55 /* See the class documentation for the rewrite that we're doing here. */
57 /* Generate type checking code for our operands such that they match. */
58 typeCheckOperands(context);
60 const QSourceLocation myLocation(context->locationFor(this));
61 const FunctionFactory::Ptr functions(context->functionSignatures());
63 Expression::Ptr uriSource;
66 Expression::List distinctValuesArgs;
67 distinctValuesArgs.append(m_operands.first());
69 uriSource = functions->createFunctionCall(QXmlName(StandardNamespaces::fn, StandardLocalNames::distinct_values),
73 context->addLocation(uriSource.data(), myLocation);
76 const VariableSlotID rangeSlot = context->allocateRangeSlot();
77 const Expression::Ptr uriReference(new RangeVariableReference(uriSource, rangeSlot));
78 context->addLocation(uriReference.data(), myLocation);
80 Expression::List docArgs;
82 if(m_operands.count() == 2)
84 Expression::List baseUriArgs;
85 baseUriArgs.append(uriReference);
86 baseUriArgs.append(m_operands.at(1));
88 const Expression::Ptr fnBaseUri(functions->createFunctionCall(QXmlName(StandardNamespaces::fn, StandardLocalNames::resolve_uri),
92 context->addLocation(fnBaseUri.data(), myLocation);
93 docArgs.append(fnBaseUri);
96 docArgs.append(uriReference);
98 const Expression::Ptr fnDoc(functions->createFunctionCall(QXmlName(StandardNamespaces::fn, StandardLocalNames::doc),
102 context->addLocation(fnDoc.data(), myLocation);
105 Expression::Ptr newMe(new ForClause(rangeSlot,
108 -1 /* We have no position variable. */));
110 Expression::Ptr oldMe(this);
111 rewrite(oldMe, newMe, context);
112 return newMe->typeCheck(context, reqType);