VisitIsType()

override QilNode System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitIsType ( QilTargetType local0 )

inlineprotectedvirtual

Reimplemented from System.Xml.Xsl.Qil.QilVisitor.

Definition at line 2588 of file XmlILOptimizerVisitor.cs.

    {
        QilNode qilNode = local0[0];
        QilNode qilNode2 = local0[1];
        if (this[XmlILOptimization.FoldNone] && (object)qilNode.XmlType == XmlQueryTypeFactory.None && AllowReplace(XmlILOptimization.FoldNone, local0))
        {
            return Replace(XmlILOptimization.FoldNone, local0, VisitNop(f.Nop(qilNode)));
        }
        if (this[XmlILOptimization.EliminateIsType] && !OptimizerPatterns.Read(qilNode).MatchesPattern(OptimizerPatternName.MaybeSideEffects) && qilNode2.NodeType == QilNodeType.LiteralType)
        {
            XmlQueryType baseType = (XmlQueryType)((QilLiteral)qilNode2).Value;
            if (qilNode.XmlType.IsSubtypeOf(baseType) && AllowReplace(XmlILOptimization.EliminateIsType, local0))
            {
                return Replace(XmlILOptimization.EliminateIsType, local0, VisitTrue(f.True()));
            }
        }
        if (this[XmlILOptimization.EliminateIsType] && !OptimizerPatterns.Read(qilNode).MatchesPattern(OptimizerPatternName.MaybeSideEffects) && qilNode2.NodeType == QilNodeType.LiteralType)
        {
            XmlQueryType baseType2 = (XmlQueryType)((QilLiteral)qilNode2).Value;
            if (qilNode.XmlType.NeverSubtypeOf(baseType2) && AllowReplace(XmlILOptimization.EliminateIsType, local0))
            {
                return Replace(XmlILOptimization.EliminateIsType, local0, VisitFalse(f.False()));
            }
        }
        if (this[XmlILOptimization.EliminateIsType] && qilNode2.NodeType == QilNodeType.LiteralType)
        {
            XmlQueryType xmlQueryType = (XmlQueryType)((QilLiteral)qilNode2).Value;
            if (qilNode.XmlType.Prime.NeverSubtypeOf(xmlQueryType.Prime) && AllowReplace(XmlILOptimization.EliminateIsType, local0))
            {
                return Replace(XmlILOptimization.EliminateIsType, local0, VisitIsEmpty(f.IsEmpty(qilNode)));
            }
        }
        if (this[XmlILOptimization.EliminateIsType] && OptimizerPatterns.Read(qilNode).MatchesPattern(OptimizerPatternName.MaybeSideEffects) && qilNode2.NodeType == QilNodeType.LiteralType)
        {
            XmlQueryType baseType3 = (XmlQueryType)((QilLiteral)qilNode2).Value;
            if (qilNode.XmlType.IsSubtypeOf(baseType3) && AllowReplace(XmlILOptimization.EliminateIsType, local0))
            {
                return Replace(XmlILOptimization.EliminateIsType, local0, VisitLoop(f.Loop(VisitLet(f.Let(qilNode)), VisitTrue(f.True()))));
            }
        }
        if (this[XmlILOptimization.EliminateIsType] && OptimizerPatterns.Read(qilNode).MatchesPattern(OptimizerPatternName.MaybeSideEffects) && qilNode2.NodeType == QilNodeType.LiteralType)
        {
            XmlQueryType baseType4 = (XmlQueryType)((QilLiteral)qilNode2).Value;
            if (qilNode.XmlType.NeverSubtypeOf(baseType4) && AllowReplace(XmlILOptimization.EliminateIsType, local0))
            {
                return Replace(XmlILOptimization.EliminateIsType, local0, VisitLoop(f.Loop(VisitLet(f.Let(qilNode)), VisitFalse(f.False()))));
            }
        }
        return NoReplace(local0);
    }

References System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.AllowReplace(), System.Xml.Dictionary, System.Xml.Xsl.Qil.QilReplaceVisitor.f, System.Xml.Xsl.Qil.QilFactory.False(), System.Xml.Xsl.Qil.QilFactory.IsEmpty(), System.Xml.Xsl.Qil.QilFactory.Let(), System.Xml.Xsl.Qil.QilFactory.Loop(), System.Xml.Xsl.XmlQueryTypeFactory.None, System.Xml.Xsl.Qil.QilFactory.Nop(), System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.NoReplace(), System.Xml.Xsl.IlGen.OptimizerPatterns.Read(), System.Xml.Replace, System.Xml.Xsl.Qil.QilFactory.True(), System.Xml.Xsl.Qil.QilPatternVisitor.VisitFalse(), System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitIsEmpty(), System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitLet(), System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitLoop(), System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitNop(), and System.Xml.Xsl.Qil.QilPatternVisitor.VisitTrue().