internal override Opcode Eval(ProcessingContext context) { StackFrame topSequenceArg = context.TopSequenceArg; Value[] sequences = context.Sequences; bool sequenceStackInUse = context.SequenceStackInUse; context.PushSequenceFrame(); for (int i = topSequenceArg.basePtr; i <= topSequenceArg.endPtr; i++) { NodeSequence sequence = sequences[i].Sequence; if (sequence.Count == 0) { if (!sequenceStackInUse) { context.PushSequence(NodeSequence.Empty); } } else { NodeSequenceItem[] items = sequence.Items; for (int j = 0; j < sequence.Count; j++) { SeekableXPathNavigator contextNode = items[j].GetNavigator(); NodeSequence destSequence = context.CreateSequence(); destSequence.StartNodeset(); base.criteria.Select(contextNode, destSequence); destSequence.StopNodeset(); context.PushSequence(destSequence); } } } return(base.next); }
internal override void InvokeInternal(ProcessingContext context, int argCount) { int iterationCount = context.IterationCount; context.PushSequenceFrame(); if (iterationCount > 0) { NodeSequence seq = context.CreateSequence(); seq.StartNodeset(); SeekableXPathNavigator contextNode = context.Processor.ContextNode; long currentPosition = contextNode.CurrentPosition; if (XPathMessageFunction.MoveToAddressingHeader(contextNode, "ReplyTo")) { seq.Add(contextNode); } seq.StopNodeset(); context.PushSequence(seq); for (int i = 1; i < iterationCount; i++) { seq.refCount++; context.PushSequence(seq); } contextNode.CurrentPosition = currentPosition; } }
internal override Opcode Eval(ProcessingContext context) { StackFrame topSequenceArg = context.TopSequenceArg; Value[] sequences = context.Sequences; bool sequenceStackInUse = context.SequenceStackInUse; context.PushSequenceFrame(); for (int i = topSequenceArg.basePtr; i <= topSequenceArg.endPtr; i++) { NodeSequence sequence = sequences[i].Sequence; if (sequence.Count == 0) { if (!sequenceStackInUse) { context.PushSequence(NodeSequence.Empty); } } else { NodeSequenceItem[] items = sequence.Items; for (int j = 0; j < sequence.Count; j++) { SeekableXPathNavigator contextNode = items[j].GetNavigator(); NodeSequence destSequence = context.CreateSequence(); destSequence.StartNodeset(); base.criteria.Select(contextNode, destSequence); destSequence.StopNodeset(); context.PushSequence(destSequence); } } } return base.next; }
internal override void InvokeInternal(ProcessingContext context, int argCount) { int iterationCount = context.IterationCount; context.PushSequenceFrame(); if (iterationCount > 0) { NodeSequence seq = context.CreateSequence(); seq.StartNodeset(); SeekableXPathNavigator contextNode = context.Processor.ContextNode; long currentPosition = contextNode.CurrentPosition; if (XPathMessageFunction.MoveToAddressingHeader(contextNode, "RelatesTo")) { seq.Add(contextNode); while (XPathMessageFunction.MoveToAddressingHeaderSibling(contextNode, "RelatesTo")) { seq.Add(contextNode); } } seq.StopNodeset(); context.PushSequence(seq); for (int i = 1; i < iterationCount; i++) { seq.refCount++; context.PushSequence(seq); } contextNode.CurrentPosition = currentPosition; } }
internal override Opcode Eval(ProcessingContext context) { if (!context.LoadVariable(this.expr.Variable)) { context.PushSequenceFrame(); NodeSequence seq = context.CreateSequence(); seq.Add(context.Processor.ContextNode); context.PushSequence(seq); int counterMarker = context.Processor.CounterMarker; try { this.expr.Eval(context); } catch (XPathNavigatorException exception) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(exception.Process(this)); } catch (NavigatorInvalidBodyAccessException exception2) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(exception2.Process(this)); } context.Processor.CounterMarker = counterMarker; context.PopSequenceFrame(); context.PopSequenceFrame(); context.LoadVariable(this.expr.Variable); } return base.next; }
internal static void IterateAndPushSequences(ProcessingContext context) { StackFrame sequences = context.TopSequenceArg; Value[] sequenceBuffer = context.Sequences; context.PushFrame(); while (sequences.basePtr <= sequences.endPtr) { NodeSequence sourceSeq = sequenceBuffer[sequences.basePtr++].Sequence; int count = sourceSeq.Count; if (count == 0) { context.PushSequence(NodeSequence.Empty); } else { for (int item = 0; item < sourceSeq.Count; ++item) { NodeSequence newSequence = context.CreateSequence(); newSequence.StartNodeset(); newSequence.Add(ref sourceSeq.Items[item]); newSequence.StopNodeset(); context.Push(newSequence); } } } }
internal static void IterateAndPushSequences(ProcessingContext context) { StackFrame topSequenceArg = context.TopSequenceArg; Value[] sequences = context.Sequences; context.PushFrame(); while (topSequenceArg.basePtr <= topSequenceArg.endPtr) { NodeSequence sequence = sequences[topSequenceArg.basePtr++].Sequence; if (sequence.Count == 0) { context.PushSequence(NodeSequence.Empty); } else { for (int i = 0; i < sequence.Count; i++) { NodeSequence sequence2 = context.CreateSequence(); sequence2.StartNodeset(); sequence2.Add(ref sequence.Items[i]); sequence2.StopNodeset(); context.Push(sequence2); } } } }
internal override Opcode Eval(ProcessingContext context) { if (!context.LoadVariable(this.expr.Variable)) { context.PushSequenceFrame(); NodeSequence seq = context.CreateSequence(); seq.Add(context.Processor.ContextNode); context.PushSequence(seq); int marker = context.Processor.CounterMarker; try { this.expr.Eval(context); } catch (XPathNavigatorException e) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(e.Process(this)); } catch (NavigatorInvalidBodyAccessException e) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(e.Process(this)); } context.Processor.CounterMarker = marker; context.PopSequenceFrame(); context.PopSequenceFrame(); context.LoadVariable(this.expr.Variable); } return(this.next); }
internal override Opcode Eval(ProcessingContext context) { StackFrame topFrame = context.TopSequenceArg; Value[] sequences = context.Sequences; bool wasInUse = context.SequenceStackInUse; context.PushSequenceFrame(); for (int i = topFrame.basePtr; i <= topFrame.endPtr; ++i) { NodeSequence sourceSeq = sequences[i].Sequence; int count = sourceSeq.Count; if (count == 0) { // Empty sequence. // Since there are no nodes in the sequence, we will track this sequence also // using an empty sequence if (!wasInUse) { context.PushSequence(NodeSequence.Empty); } } else { NodeSequenceItem[] items = sourceSeq.Items; for (int item = 0; item < sourceSeq.Count; ++item) { SeekableXPathNavigator node = items[item].GetNavigator(); Fx.Assert(null != node, ""); NodeSequence newSeq = context.CreateSequence(); newSeq.StartNodeset(); this.criteria.Select(node, newSeq); newSeq.StopNodeset(); context.PushSequence(newSeq); } } } return(this.next); }
internal override Opcode Eval(ProcessingContext context) { context.PushContextSequenceFrame(); NodeSequence seq = context.CreateSequence(); seq.StartNodeset(); seq.Add(context.Processor.ContextNode); seq.StopNodeset(); context.PushSequence(seq); return(base.next); }
internal override Opcode Eval(ProcessingContext context) { context.PushContextSequenceFrame(); NodeSequence seq = context.CreateSequence(); seq.StartNodeset(); seq.Add(context.Processor.ContextNode); seq.StopNodeset(); context.PushSequence(seq); return this.next; }
internal override Opcode Eval(ProcessingContext context) { // The query processor object also serves as the query document root int iterationCount = context.IterationCount; Opcode returnOpcode = this.next; // A root is always an initial step context.PushSequenceFrame(); NodeSequence seq = context.CreateSequence(); if (this.next != null && 0 != (this.next.Flags & OpcodeFlags.CompressableSelect)) { SeekableXPathNavigator node = context.Processor.ContextNode; node.MoveToRoot(); returnOpcode = this.next.Eval(seq, node); while (returnOpcode != null && 0 != (returnOpcode.Flags & OpcodeFlags.CompressableSelect)) { returnOpcode = returnOpcode.Next; } } else { // Roots do not have any qnames.. seq.StartNodeset(); SeekableXPathNavigator node = context.Processor.ContextNode; node.MoveToRoot(); seq.Add(node); seq.StopNodeset(); } if (seq.Count == 0) { context.ReleaseSequence(seq); seq = NodeSequence.Empty; } for (int i = 0; i < iterationCount; ++i) { context.PushSequence(seq); } if (iterationCount > 1) { seq.refCount += iterationCount - 1; } return(returnOpcode); }
internal override Opcode Eval(ProcessingContext context) { StackFrame sequences = context.TopSequenceArg; Value[] values = context.Values; StackFrame resultMask = context.TopArg; Value[] sequenceBuffer = context.Sequences; context.PushSequenceFrame(); for (int seqIndex = sequences.basePtr; seqIndex <= sequences.endPtr; ++seqIndex) { NodeSequence sourceSeq = sequenceBuffer[seqIndex].Sequence; if (sourceSeq.Count > 0) { NodeSequenceItem[] items = sourceSeq.Items; NodeSequence newSeq = null; // Loop over the sequence, selecting those items for which the previous expression returned a result that // matches the test value. Only those items will be processed further // Note that the original position and size information is retained. for (int i = resultMask.basePtr, n = 0; i <= resultMask.endPtr; ++i, ++n) { if (this.test == values[i].Boolean) { if (null == newSeq) { newSeq = context.CreateSequence(); } newSeq.AddCopy(ref items[n], NodeSequence.GetContextSize(sourceSeq, n)); } else { if (items[n].Last && null != newSeq) { newSeq.Items[newSeq.Count - 1].Last = true; // maintain nodeset boundaries... } } } context.PushSequence((null == newSeq) ? NodeSequence.Empty : newSeq); newSeq = null; } } return(this.next); }
internal bool LoadVariable(ProcessingContext context, int var) { if (this.subExprVars[var].seq == null) { return(false); } int iterationCount = context.IterationCount; this.counter.IncreaseBy(iterationCount * this.subExprVars[var].count); NodeSequence seq = this.subExprVars[var].seq; context.PushSequenceFrame(); for (int i = 0; i < iterationCount; i++) { seq.refCount++; context.PushSequence(seq); } return(true); }
internal override Opcode Eval(ProcessingContext context) { int iterationCount = context.IterationCount; Opcode next = base.next; context.PushSequenceFrame(); NodeSequence empty = context.CreateSequence(); if ((base.next != null) && ((base.next.Flags & OpcodeFlags.CompressableSelect) != OpcodeFlags.None)) { SeekableXPathNavigator contextNode = context.Processor.ContextNode; contextNode.MoveToRoot(); next = base.next.Eval(empty, contextNode); while ((next != null) && ((next.Flags & OpcodeFlags.CompressableSelect) != OpcodeFlags.None)) { next = next.Next; } } else { empty.StartNodeset(); SeekableXPathNavigator node = context.Processor.ContextNode; node.MoveToRoot(); empty.Add(node); empty.StopNodeset(); } if (empty.Count == 0) { context.ReleaseSequence(empty); empty = NodeSequence.Empty; } for (int i = 0; i < iterationCount; i++) { context.PushSequence(empty); } if (iterationCount > 1) { empty.refCount += iterationCount - 1; } return(next); }
internal override Opcode Eval(ProcessingContext context) { StackFrame topSequenceArg = context.TopSequenceArg; Value[] values = context.Values; StackFrame topArg = context.TopArg; Value[] sequences = context.Sequences; context.PushSequenceFrame(); for (int i = topSequenceArg.basePtr; i <= topSequenceArg.endPtr; i++) { NodeSequence sequence = sequences[i].Sequence; if (sequence.Count > 0) { NodeSequenceItem[] items = sequence.Items; NodeSequence sequence2 = null; int basePtr = topArg.basePtr; for (int j = 0; basePtr <= topArg.endPtr; j++) { if (this.test == values[basePtr].Boolean) { if (sequence2 == null) { sequence2 = context.CreateSequence(); } sequence2.AddCopy(ref items[j], NodeSequence.GetContextSize(sequence, j)); } else if (items[j].Last && (sequence2 != null)) { sequence2.Items[sequence2.Count - 1].Last = true; } basePtr++; } context.PushSequence((sequence2 == null) ? NodeSequence.Empty : sequence2); sequence2 = null; } } return(base.next); }
internal override Opcode Eval(ProcessingContext context) { int iterationCount = context.IterationCount; Opcode next = base.next; context.PushSequenceFrame(); NodeSequence empty = context.CreateSequence(); if ((base.next != null) && ((base.next.Flags & OpcodeFlags.CompressableSelect) != OpcodeFlags.None)) { SeekableXPathNavigator contextNode = context.Processor.ContextNode; contextNode.MoveToRoot(); next = base.next.Eval(empty, contextNode); while ((next != null) && ((next.Flags & OpcodeFlags.CompressableSelect) != OpcodeFlags.None)) { next = next.Next; } } else { empty.StartNodeset(); SeekableXPathNavigator node = context.Processor.ContextNode; node.MoveToRoot(); empty.Add(node); empty.StopNodeset(); } if (empty.Count == 0) { context.ReleaseSequence(empty); empty = NodeSequence.Empty; } for (int i = 0; i < iterationCount; i++) { context.PushSequence(empty); } if (iterationCount > 1) { empty.refCount += iterationCount - 1; } return next; }
internal override Opcode Eval(ProcessingContext context) { StackFrame topSequenceArg = context.TopSequenceArg; Value[] values = context.Values; StackFrame topArg = context.TopArg; Value[] sequences = context.Sequences; context.PushSequenceFrame(); for (int i = topSequenceArg.basePtr; i <= topSequenceArg.endPtr; i++) { NodeSequence sequence = sequences[i].Sequence; if (sequence.Count > 0) { NodeSequenceItem[] items = sequence.Items; NodeSequence sequence2 = null; int basePtr = topArg.basePtr; for (int j = 0; basePtr <= topArg.endPtr; j++) { if (this.test == values[basePtr].Boolean) { if (sequence2 == null) { sequence2 = context.CreateSequence(); } sequence2.AddCopy(ref items[j], NodeSequence.GetContextSize(sequence, j)); } else if (items[j].Last && (sequence2 != null)) { sequence2.Items[sequence2.Count - 1].Last = true; } basePtr++; } context.PushSequence((sequence2 == null) ? NodeSequence.Empty : sequence2); sequence2 = null; } } return base.next; }
internal override void EvalSpecial(ProcessingContext context) { int counterMarker = context.Processor.CounterMarker; if (!context.LoadVariable(base.var)) { XPathMessageContext.HeaderFun.InvokeInternal(context, 0); context.SaveVariable(base.var, context.Processor.ElapsedCount(counterMarker)); } NodeSequence[] sequenceArray = new NodeSequence[base.children.Count]; NodeSequence sequence = context.Sequences[context.TopSequenceArg.basePtr].Sequence; for (int i = 0; i < base.children.Count; i++) { sequenceArray[i] = context.CreateSequence(); sequenceArray[i].StartNodeset(); } SeekableXPathNavigator node = sequence[0].GetNavigator(); if (node.MoveToFirstChild()) { do { if (node.NodeType == XPathNodeType.Element) { List <SubExpr> list; Dictionary <string, List <SubExpr> > dictionary; string localName = node.LocalName; string namespaceURI = node.NamespaceURI; if (this.nameLookup.TryGetValue(namespaceURI, out dictionary)) { if (dictionary.TryGetValue(localName, out list)) { for (int k = 0; k < list.Count; k++) { sequenceArray[this.indexLookup[list[k]].i].Add(node); } } if (dictionary.TryGetValue(QueryDataModel.Wildcard, out list)) { for (int m = 0; m < list.Count; m++) { sequenceArray[this.indexLookup[list[m]].i].Add(node); } } } if (this.nameLookup.TryGetValue(QueryDataModel.Wildcard, out dictionary) && dictionary.TryGetValue(QueryDataModel.Wildcard, out list)) { for (int n = 0; n < list.Count; n++) { sequenceArray[this.indexLookup[list[n]].i].Add(node); } } } }while (node.MoveToNext()); } int num6 = context.Processor.CounterMarker; for (int j = 0; j < base.children.Count; j++) { if (base.children[j].useSpecial) { sequenceArray[j].StopNodeset(); context.Processor.CounterMarker = num6; context.PushSequenceFrame(); context.PushSequence(sequenceArray[j]); for (Opcode opcode = base.children[j].FirstOp.Next; opcode != null; opcode = opcode.Eval(context)) { } context.SaveVariable(base.children[j].var, context.Processor.ElapsedCount(counterMarker)); context.PopSequenceFrame(); } else { context.ReleaseSequence(sequenceArray[j]); } } context.Processor.CounterMarker = counterMarker; }
internal bool LoadVariable(ProcessingContext context, int var) { if (this.subExprVars[var].seq == null) { return false; } int iterationCount = context.IterationCount; this.counter.IncreaseBy(iterationCount * this.subExprVars[var].count); NodeSequence seq = this.subExprVars[var].seq; context.PushSequenceFrame(); for (int i = 0; i < iterationCount; i++) { seq.refCount++; context.PushSequence(seq); } return true; }
internal override void EvalSpecial(ProcessingContext context) { int marker = context.Processor.CounterMarker; if (!context.LoadVariable(this.var)) { XPathMessageContext.HeaderFun.InvokeInternal(context, 0); context.SaveVariable(this.var, context.Processor.ElapsedCount(marker)); } // WS, Microsoft, see if we can put this array in the processor to save // an allocation. Perhaps we can use the variables slot we're going to fill NodeSequence[] childSequences = new NodeSequence[this.children.Count]; NodeSequence seq = context.Sequences[context.TopSequenceArg.basePtr].Sequence; for (int i = 0; i < this.children.Count; ++i) { childSequences[i] = context.CreateSequence(); childSequences[i].StartNodeset(); } // Perform the index SeekableXPathNavigator nav = seq[0].GetNavigator(); if (nav.MoveToFirstChild()) { do { if (nav.NodeType == XPathNodeType.Element) { List <SubExpr> lst; string name = nav.LocalName; string ns = nav.NamespaceURI; Dictionary <string, List <SubExpr> > nextLookup; if (this.nameLookup.TryGetValue(ns, out nextLookup)) { if (nextLookup.TryGetValue(name, out lst)) { for (int i = 0; i < lst.Count; ++i) { childSequences[this.indexLookup[lst[i]].i].Add(nav); } } if (nextLookup.TryGetValue(QueryDataModel.Wildcard, out lst)) { for (int i = 0; i < lst.Count; ++i) { childSequences[this.indexLookup[lst[i]].i].Add(nav); } } } if (this.nameLookup.TryGetValue(QueryDataModel.Wildcard, out nextLookup)) { if (nextLookup.TryGetValue(QueryDataModel.Wildcard, out lst)) { for (int i = 0; i < lst.Count; ++i) { childSequences[this.indexLookup[lst[i]].i].Add(nav); } } } } } while (nav.MoveToNext()); } int secondMarker = context.Processor.CounterMarker; for (int i = 0; i < this.children.Count; ++i) { if (this.children[i].useSpecial) { childSequences[i].StopNodeset(); context.Processor.CounterMarker = secondMarker; context.PushSequenceFrame(); context.PushSequence(childSequences[i]); Opcode op = this.children[i].FirstOp.Next; while (op != null) { op = op.Eval(context); } context.SaveVariable(this.children[i].var, context.Processor.ElapsedCount(marker)); context.PopSequenceFrame(); } else { context.ReleaseSequence(childSequences[i]); //context.SetVariable(this.children[i].Variable, null, 0); } } context.Processor.CounterMarker = marker; }
internal override void EvalSpecial(ProcessingContext context) { int counterMarker = context.Processor.CounterMarker; if (!context.LoadVariable(base.var)) { XPathMessageContext.HeaderFun.InvokeInternal(context, 0); context.SaveVariable(base.var, context.Processor.ElapsedCount(counterMarker)); } NodeSequence[] sequenceArray = new NodeSequence[base.children.Count]; NodeSequence sequence = context.Sequences[context.TopSequenceArg.basePtr].Sequence; for (int i = 0; i < base.children.Count; i++) { sequenceArray[i] = context.CreateSequence(); sequenceArray[i].StartNodeset(); } SeekableXPathNavigator node = sequence[0].GetNavigator(); if (node.MoveToFirstChild()) { do { if (node.NodeType == XPathNodeType.Element) { List<SubExpr> list; Dictionary<string, List<SubExpr>> dictionary; string localName = node.LocalName; string namespaceURI = node.NamespaceURI; if (this.nameLookup.TryGetValue(namespaceURI, out dictionary)) { if (dictionary.TryGetValue(localName, out list)) { for (int k = 0; k < list.Count; k++) { sequenceArray[this.indexLookup[list[k]].i].Add(node); } } if (dictionary.TryGetValue(QueryDataModel.Wildcard, out list)) { for (int m = 0; m < list.Count; m++) { sequenceArray[this.indexLookup[list[m]].i].Add(node); } } } if (this.nameLookup.TryGetValue(QueryDataModel.Wildcard, out dictionary) && dictionary.TryGetValue(QueryDataModel.Wildcard, out list)) { for (int n = 0; n < list.Count; n++) { sequenceArray[this.indexLookup[list[n]].i].Add(node); } } } } while (node.MoveToNext()); } int num6 = context.Processor.CounterMarker; for (int j = 0; j < base.children.Count; j++) { if (base.children[j].useSpecial) { sequenceArray[j].StopNodeset(); context.Processor.CounterMarker = num6; context.PushSequenceFrame(); context.PushSequence(sequenceArray[j]); for (Opcode opcode = base.children[j].FirstOp.Next; opcode != null; opcode = opcode.Eval(context)) { } context.SaveVariable(base.children[j].var, context.Processor.ElapsedCount(counterMarker)); context.PopSequenceFrame(); } else { context.ReleaseSequence(sequenceArray[j]); } } context.Processor.CounterMarker = counterMarker; }
internal static void IterateAndPushSequences(ProcessingContext context) { StackFrame topSequenceArg = context.TopSequenceArg; Value[] sequences = context.Sequences; context.PushFrame(); while (topSequenceArg.basePtr <= topSequenceArg.endPtr) { NodeSequence sequence = sequences[topSequenceArg.basePtr++].Sequence; if (sequence.Count == 0) { context.PushSequence(NodeSequence.Empty); } else { for (int i = 0; i < sequence.Count; i++) { NodeSequence sequence2 = context.CreateSequence(); sequence2.StartNodeset(); sequence2.Add(ref sequence.Items[i]); sequence2.StopNodeset(); context.Push(sequence2); } } } }
internal override Opcode Eval(ProcessingContext context) { // The query processor object also serves as the query document root int iterationCount = context.IterationCount; Opcode returnOpcode = this.next; // A root is always an initial step context.PushSequenceFrame(); NodeSequence seq = context.CreateSequence(); if (this.next != null && 0 != (this.next.Flags & OpcodeFlags.CompressableSelect)) { SeekableXPathNavigator node = context.Processor.ContextNode; node.MoveToRoot(); returnOpcode = this.next.Eval(seq, node); while (returnOpcode != null && 0 != (returnOpcode.Flags & OpcodeFlags.CompressableSelect)) { returnOpcode = returnOpcode.Next; } } else { // Roots do not have any qnames.. seq.StartNodeset(); SeekableXPathNavigator node = context.Processor.ContextNode; node.MoveToRoot(); seq.Add(node); seq.StopNodeset(); } if (seq.Count == 0) { context.ReleaseSequence(seq); seq = NodeSequence.Empty; } for (int i = 0; i < iterationCount; ++i) { context.PushSequence(seq); } if (iterationCount > 1) seq.refCount += iterationCount - 1; return returnOpcode; }
internal override Opcode Eval(ProcessingContext context) { StackFrame topFrame = context.TopSequenceArg; Value[] sequences = context.Sequences; bool wasInUse = context.SequenceStackInUse; context.PushSequenceFrame(); for (int i = topFrame.basePtr; i <= topFrame.endPtr; ++i) { NodeSequence sourceSeq = sequences[i].Sequence; int count = sourceSeq.Count; if (count == 0) { // Empty sequence. // Since there are no nodes in the sequence, we will track this sequence also // using an empty sequence if (!wasInUse) context.PushSequence(NodeSequence.Empty); } else { NodeSequenceItem[] items = sourceSeq.Items; for (int item = 0; item < sourceSeq.Count; ++item) { SeekableXPathNavigator node = items[item].GetNavigator(); Fx.Assert(null != node, ""); NodeSequence newSeq = context.CreateSequence(); newSeq.StartNodeset(); this.criteria.Select(node, newSeq); newSeq.StopNodeset(); context.PushSequence(newSeq); } } } return this.next; }
internal override void InvokeInternal(ProcessingContext context, int argCount) { int count = context.IterationCount; context.PushSequenceFrame(); if (count > 0) { NodeSequence seq = context.CreateSequence(); seq.StartNodeset(); SeekableXPathNavigator nav = context.Processor.ContextNode; long p = nav.CurrentPosition; if (MoveToBody(nav)) { seq.Add(nav); } nav.CurrentPosition = p; seq.StopNodeset(); context.PushSequence(seq); for (int i = 1; i < count; ++i) { seq.refCount++; context.PushSequence(seq); } } }
internal override void EvalSpecial(ProcessingContext context) { int marker = context.Processor.CounterMarker; if (!context.LoadVariable(this.var)) { XPathMessageContext.HeaderFun.InvokeInternal(context, 0); context.SaveVariable(this.var, context.Processor.ElapsedCount(marker)); } // WS, [....], see if we can put this array in the processor to save // an allocation. Perhaps we can use the variables slot we're going to fill NodeSequence[] childSequences = new NodeSequence[this.children.Count]; NodeSequence seq = context.Sequences[context.TopSequenceArg.basePtr].Sequence; for (int i = 0; i < this.children.Count; ++i) { childSequences[i] = context.CreateSequence(); childSequences[i].StartNodeset(); } // Perform the index SeekableXPathNavigator nav = seq[0].GetNavigator(); if (nav.MoveToFirstChild()) { do { if (nav.NodeType == XPathNodeType.Element) { List<SubExpr> lst; string name = nav.LocalName; string ns = nav.NamespaceURI; Dictionary<string, List<SubExpr>> nextLookup; if (this.nameLookup.TryGetValue(ns, out nextLookup)) { if (nextLookup.TryGetValue(name, out lst)) { for (int i = 0; i < lst.Count; ++i) { childSequences[this.indexLookup[lst[i]].i].Add(nav); } } if (nextLookup.TryGetValue(QueryDataModel.Wildcard, out lst)) { for (int i = 0; i < lst.Count; ++i) { childSequences[this.indexLookup[lst[i]].i].Add(nav); } } } if (this.nameLookup.TryGetValue(QueryDataModel.Wildcard, out nextLookup)) { if (nextLookup.TryGetValue(QueryDataModel.Wildcard, out lst)) { for (int i = 0; i < lst.Count; ++i) { childSequences[this.indexLookup[lst[i]].i].Add(nav); } } } } } while (nav.MoveToNext()); } int secondMarker = context.Processor.CounterMarker; for (int i = 0; i < this.children.Count; ++i) { if (this.children[i].useSpecial) { childSequences[i].StopNodeset(); context.Processor.CounterMarker = secondMarker; context.PushSequenceFrame(); context.PushSequence(childSequences[i]); Opcode op = this.children[i].FirstOp.Next; while (op != null) { op = op.Eval(context); } context.SaveVariable(this.children[i].var, context.Processor.ElapsedCount(marker)); context.PopSequenceFrame(); } else { context.ReleaseSequence(childSequences[i]); //context.SetVariable(this.children[i].Variable, null, 0); } } context.Processor.CounterMarker = marker; }
internal static void IterateAndPushSequences(ProcessingContext context) { StackFrame sequences = context.TopSequenceArg; Value[] sequenceBuffer = context.Sequences; context.PushFrame(); while (sequences.basePtr <= sequences.endPtr) { NodeSequence sourceSeq = sequenceBuffer[sequences.basePtr++].Sequence; int count = sourceSeq.Count; if (count == 0) { context.PushSequence(NodeSequence.Empty); } else { for (int item = 0; item < sourceSeq.Count; ++item) { NodeSequence newSequence = context.CreateSequence(); newSequence.StartNodeset(); newSequence.Add(ref sourceSeq.Items[item]); newSequence.StopNodeset(); context.Push(newSequence); } } } }