public XPathPredicateEnvironment(IXPathEnvironment baseEnvironment)
{
_baseEnvironment = baseEnvironment;
_f = baseEnvironment.Factory;
_fixupCurrent = _f.Unknown(T.NodeNotRtf);
_fixupPosition = _f.Unknown(T.DoubleX);
_fixupLast = _f.Unknown(T.DoubleX);
this.fixupVisitor = new XPathBuilder.FixupVisitor(_f, _fixupCurrent, _fixupPosition, _fixupLast);
}
// ----------------------------------------------------------------------------
public XPathBuilder(IXPathEnvironment environment)
{
_environment = environment;
_f = _environment.Factory;
this.fixupCurrent = _f.Unknown(T.NodeNotRtf);
this.fixupPosition = _f.Unknown(T.DoubleX);
this.fixupLast = _f.Unknown(T.DoubleX);
_fixupVisitor = new FixupVisitor(_f, fixupCurrent, fixupPosition, fixupLast);
}
public XPathPatternBuilder(IXPathEnvironment environment) {
Debug.Assert(environment != null);
this.environment = environment;
this.f = environment.Factory;
this.predicateEnvironment = new XPathPredicateEnvironment(environment);
this.predicateBuilder = new XPathBuilder(predicateEnvironment);
this.fixupNode = f.Unknown(T.NodeNotRtfS);
}
public XPathPatternBuilder(IXPathEnvironment environment)
{
Debug.Assert(environment != null);
_environment = environment;
_f = environment.Factory;
_predicateEnvironment = new XPathPredicateEnvironment(environment);
_predicateBuilder = new XPathBuilder(_predicateEnvironment);
_fixupNode = _f.Unknown(T.NodeNotRtfS);
}
public QilNode Fixup(QilNode inExpr, IXPathEnvironment environment)
{
Debug.Assert(environment != null);
this.justCount = false;
this.current = null;
this.environment = environment;
numCurrent = numPosition = numLast = 0;
inExpr = VisitAssumeReference(inExpr);
#if StopMaskOptimisation
// Don't need
//SetStopVisitMark(inExpr, /*stop*/true);
#endif
return(inExpr);
}
public QilNode Fixup(QilNode inExpr, QilIterator current, QilNode last)
{
this.current = current;
this.last = last;
Debug.Assert(current != null);
this.justCount = false;
this.environment = null;
numCurrent = numPosition = numLast = 0;
inExpr = VisitAssumeReference(inExpr);
#if StopMaskOptimisation
SetStopVisitMark(inExpr, /*stop*/ true);
#endif
return(inExpr);
}
public KeyMatchBuilder(IXPathEnvironment env) : base(env)
{
convertor = new PathConvertor(env.Factory);
}
//also used by XPathPatternBuilder
public static QilNode PredicateToBoolean(QilNode predicate, XPathQilFactory f, IXPathEnvironment env)
{
// Prepocess predicate: if (predicate is number) then predicate := (position() == predicate)
if (!f.IsAnyType(predicate))
{
if (predicate.XmlType.TypeCode == XmlTypeCode.Double)
{
predicate = f.Eq(env.GetPosition(), predicate);
}
else
{
predicate = f.ConvertToBoolean(predicate);
}
}
else
{
QilIterator i;
predicate = f.Loop(i = f.Let(predicate),
f.Conditional(f.IsType(i, T.Double),
f.Eq(env.GetPosition(), f.TypeAssert(i, T.DoubleX)),
f.ConvertToBoolean(i)
)
);
}
return(predicate);
}
public KeyMatchBuilder(IXPathEnvironment env) : base(env) {
convertor = new PathConvertor(env.Factory);
}
public XPathPredicateEnvironment(IXPathEnvironment baseEnvironment) {
this.baseEnvironment = baseEnvironment;
this.f = baseEnvironment.Factory;
cloner = new Cloner(f.BaseFactory);
}
public XPathPredicateEnvironment(IXPathEnvironment baseEnvironment)
{
this.baseEnvironment = baseEnvironment;
this.f = baseEnvironment.Factory;
cloner = new Cloner(f.BaseFactory);
}
