VisitUnion()

override QilNode System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitUnion ( QilBinary local0 )

inlineprotectedvirtual

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

Definition at line 618 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.FoldNone] && (object)qilNode2.XmlType == XmlQueryTypeFactory.None && AllowReplace(XmlILOptimization.FoldNone, local0))
        {
            return Replace(XmlILOptimization.FoldNone, local0, VisitNop(f.Nop(qilNode2)));
        }
        if (this[XmlILOptimization.EliminateUnion] && qilNode2 == qilNode && AllowReplace(XmlILOptimization.EliminateUnion, local0))
        {
            return Replace(XmlILOptimization.EliminateUnion, local0, VisitDocOrderDistinct(f.DocOrderDistinct(qilNode)));
        }
        if (this[XmlILOptimization.EliminateUnion] && qilNode.NodeType == QilNodeType.Sequence && qilNode.Count == 0 && AllowReplace(XmlILOptimization.EliminateUnion, local0))
        {
            return Replace(XmlILOptimization.EliminateUnion, local0, VisitDocOrderDistinct(f.DocOrderDistinct(qilNode2)));
        }
        if (this[XmlILOptimization.EliminateUnion] && qilNode2.NodeType == QilNodeType.Sequence && qilNode2.Count == 0 && AllowReplace(XmlILOptimization.EliminateUnion, local0))
        {
            return Replace(XmlILOptimization.EliminateUnion, local0, VisitDocOrderDistinct(f.DocOrderDistinct(qilNode)));
        }
        if (this[XmlILOptimization.EliminateUnion] && qilNode.NodeType == QilNodeType.XmlContext && qilNode2.NodeType == QilNodeType.XmlContext && AllowReplace(XmlILOptimization.EliminateUnion, local0))
        {
            return Replace(XmlILOptimization.EliminateUnion, local0, qilNode);
        }
        if (this[XmlILOptimization.NormalizeUnion] && (!IsDocOrderDistinct(qilNode) || !IsDocOrderDistinct(qilNode2)) && AllowReplace(XmlILOptimization.NormalizeUnion, local0))
        {
            return Replace(XmlILOptimization.NormalizeUnion, local0, VisitUnion(f.Union(VisitDocOrderDistinct(f.DocOrderDistinct(qilNode)), VisitDocOrderDistinct(f.DocOrderDistinct(qilNode2)))));
        }
        if (this[XmlILOptimization.AnnotateUnion] && AllowReplace(XmlILOptimization.AnnotateUnion, local0))
        {
            OptimizerPatterns.Write(local0).AddPattern(OptimizerPatternName.IsDocOrderDistinct);
        }
        if (this[XmlILOptimization.AnnotateUnionContent] && (IsStepPattern(qilNode, QilNodeType.Content) || IsStepPattern(qilNode, QilNodeType.Union)) && (IsStepPattern(qilNode2, QilNodeType.Content) || IsStepPattern(qilNode2, QilNodeType.Union)) && OptimizerPatterns.Read(qilNode).GetArgument(OptimizerPatternArgument.StepInput) == OptimizerPatterns.Read(qilNode2).GetArgument(OptimizerPatternArgument.StepInput) && AllowReplace(XmlILOptimization.AnnotateUnionContent, local0))
        {
            AddStepPattern(local0, (QilNode)OptimizerPatterns.Read(qilNode).GetArgument(OptimizerPatternArgument.StepInput));
            OptimizerPatterns.Write(local0).AddPattern(OptimizerPatternName.SameDepth);
        }
        return NoReplace(local0);
    }

References System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.AddStepPattern(), System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.AllowReplace(), System.Collections.Generic.Dictionary< TKey, TValue >.Count, System.Xml.Xsl.Qil.QilFactory.DocOrderDistinct(), System.Xml.Xsl.Qil.QilReplaceVisitor.f, System.Xml.Xsl.IlGen.IsDocOrderDistinct, System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.IsStepPattern(), 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.Union(), System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitDocOrderDistinct(), System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitNop(), System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitUnion(), and System.Xml.Xsl.IlGen.OptimizerPatterns.Write().

Referenced by System.Xml.Xsl.IlGen.XmlILOptimizerVisitor.VisitUnion().