//-----------------------------------------------
// function definition and invocation
//-----------------------------------------------
public XmlQueryType CheckFunction(QilFunction node)
{
CheckClassAndNodeType(node[0], typeof(QilList), QilNodeType.FormalParameterList);
Check(node[2].NodeType == QilNodeType.False || node[2].NodeType == QilNodeType.True, node, "SideEffects must either be True or False");
Check(node.Definition.XmlType.IsSubtypeOf(node.XmlType), node, "Function definition's xml type must be a subtype of the function's return type");
return(node.XmlType);
}
public QilNode GenerateInvoke(QilFunction func, IList<XslNode> actualArgs)
{
_iterStack.Clear();
_formalArgs = func.Arguments;
_invokeArgs = _fac.ActualParameterList();
// curArg is an instance variable used in Clone() method
for (_curArg = 0; _curArg < _formalArgs.Count; _curArg++)
{
// Find actual value for a given formal arg
QilParameter formalArg = (QilParameter)_formalArgs[_curArg];
QilNode invokeArg = FindActualArg(formalArg, actualArgs);
// If actual value was not specified, use the default value and copy its debug comment
if (invokeArg == null)
{
if (_debug)
{
if (formalArg.Name.NamespaceUri == XmlReservedNs.NsXslDebug)
{
Debug.Assert(formalArg.Name.LocalName == "namespaces", "Cur,Pos,Last don't have default values and should be always added to by caller in AddImplicitArgs()");
Debug.Assert(formalArg.DefaultValue != null, "PrecompileProtoTemplatesHeaders() set it");
invokeArg = Clone(formalArg.DefaultValue);
}
else
{
invokeArg = _fac.DefaultValueMarker();
}
}
else
{
Debug.Assert(formalArg.Name.NamespaceUri != XmlReservedNs.NsXslDebug, "Cur,Pos,Last don't have default values and should be always added to by caller in AddImplicitArgs(). We don't have $namespaces in !debug.");
invokeArg = Clone(formalArg.DefaultValue);
}
}
XmlQueryType formalType = formalArg.XmlType;
XmlQueryType invokeType = invokeArg.XmlType;
// Possible arg types: anyType, node-set, string, boolean, and number
_fac.CheckXsltType(formalArg);
_fac.CheckXsltType(invokeArg);
if (!invokeType.IsSubtypeOf(formalType))
{
// This may occur only if inferred type of invokeArg is XslFlags.None
Debug.Assert(invokeType == T.ItemS, "Actual argument type is not a subtype of formal argument type");
invokeArg = _fac.TypeAssert(invokeArg, formalType);
}
_invokeArgs.Add(invokeArg);
}
// Create Invoke node and wrap it with previous parameter declarations
QilNode invoke = _fac.Invoke(func, _invokeArgs);
while (_iterStack.Count != 0)
invoke = _fac.Loop(_iterStack.Pop(), invoke);
return invoke;
}
//-----------------------------------------------
// function definition and invocation
//-----------------------------------------------
public QilFunction Function(QilNode arguments, QilNode definition, QilNode sideEffects, XmlQueryType xmlType)
{
QilFunction n = new QilFunction(QilNodeType.Function, arguments, definition, sideEffects, xmlType);
n.XmlType = this.typeCheck.CheckFunction(n);
TraceNode(n);
return(n);
}
public QilNode Invoke(QilFunction func, QilList args) {
Debug.Assert(args.NodeType == QilNodeType.ActualParameterList);
Debug.Assert(func.Arguments.Count == args.Count);
return f.Invoke(func, args);
}
public QilNode Invoke(QilFunction func, QilList args)
{
Debug.Assert(args.NodeType == QilNodeType.ActualParameterList);
Debug.Assert(func.Arguments.Count == args.Count);
return(_f.Invoke(func, args));
}
//-----------------------------------------------
// function definition and invocation
//-----------------------------------------------
public XmlQueryType CheckFunction(QilFunction node) {
CheckClassAndNodeType(node[0], typeof(QilList), QilNodeType.FormalParameterList);
Check(node[2].NodeType == QilNodeType.False || node[2].NodeType == QilNodeType.True, node, "SideEffects must either be True or False");
Check(node.Definition.XmlType.IsSubtypeOf(node.XmlType), node, "Function definition's xml type must be a subtype of the function's return type");
return node.XmlType;
}
protected virtual QilNode VisitFunctionReference(QilFunction n) { return n; }
protected virtual QilNode VisitFunction(QilFunction n) { return VisitChildren(n); }
/// <summary>
/// Generate code for the specified function.
/// </summary>
private void Function(QilFunction ndFunc)
{
MethodInfo methFunc;
int paramId;
IteratorDescriptor iterInfo;
bool useWriter;
// Annotate each function parameter with a IteratorDescriptor
foreach (QilIterator iter in ndFunc.Arguments)
{
Debug.Assert(iter.NodeType == QilNodeType.Parameter);
// Create an IteratorDescriptor for this parameter
iterInfo = new IteratorDescriptor(_helper);
// Add one to parameter index, as 0th parameter is always "this"
paramId = XmlILAnnotation.Write(iter).ArgumentPosition + 1;
// The ParameterInfo for each argument should be set as its location
iterInfo.Storage = StorageDescriptor.Parameter(paramId, GetItemStorageType(iter), !iter.XmlType.IsSingleton);
// Associate IteratorDescriptor with Let iterator
XmlILAnnotation.Write(iter).CachedIteratorDescriptor = iterInfo;
}
methFunc = XmlILAnnotation.Write(ndFunc).FunctionBinding;
useWriter = (XmlILConstructInfo.Read(ndFunc).ConstructMethod == XmlILConstructMethod.Writer);
// Generate query code from QilExpression tree
_helper.MethodBegin(methFunc, ndFunc.SourceLine, useWriter);
foreach (QilIterator iter in ndFunc.Arguments)
{
// DebugInfo: Sequence point just before generating code for the bound expression
if (_qil.IsDebug && iter.SourceLine != null)
_helper.DebugSequencePoint(iter.SourceLine);
// Calculate default value of this parameter
if (iter.Binding != null)
{
Debug.Assert(iter.XmlType == TypeFactory.ItemS, "IlGen currently only supports default values in parameters of type item*.");
paramId = (iter.Annotation as XmlILAnnotation).ArgumentPosition + 1;
// runtime.MatchesXmlType(param, XmlTypeCode.QName);
Label lblLocalComputed = _helper.DefineLabel();
_helper.LoadQueryRuntime();
_helper.LoadParameter(paramId);
_helper.LoadInteger((int)XmlTypeCode.QName);
_helper.Call(XmlILMethods.SeqMatchesCode);
_helper.Emit(OpCodes.Brfalse, lblLocalComputed);
// Compute default value of this parameter
StartNestedIterator(iter);
NestedVisitEnsureStack(iter.Binding, GetItemStorageType(iter), /*isCached:*/!iter.XmlType.IsSingleton);
EndNestedIterator(iter);
_helper.SetParameter(paramId);
_helper.MarkLabel(lblLocalComputed);
}
}
StartNestedIterator(ndFunc);
// If function did not push results to writer, then function will return value(s) (rather than void)
if (useWriter)
NestedVisit(ndFunc.Definition);
else
NestedVisitEnsureStack(ndFunc.Definition, GetItemStorageType(ndFunc), !ndFunc.XmlType.IsSingleton);
EndNestedIterator(ndFunc);
_helper.MethodEnd();
}
protected override QilNode VisitFunctionReference(QilFunction n) { return NoReplace(n); }
protected override QilNode VisitFunction(QilFunction n)
{
// No need to change function references
return n;
}
protected override QilNode VisitFunctionReference(QilFunction n)
{
return(NoReplace(n));
}
// ----------------- use-attribute-sets, call-templates, apply-templates, apply-imports ----------------------------- //
private QilNode GenerateCall(QilFunction func, XslNode node) {
Debug.Assert(
node.NodeType == XslNodeType.CallTemplate ||
node.NodeType == XslNodeType.UseAttributeSet
);
AddImplicitArgs(node);
return invkGen.GenerateInvoke(func, node.Content);
}
protected override QilNode VisitFunction(QilFunction local0) {
QilNode local1 = local0[0];
QilNode local2 = local0[1];
QilNode local3 = local0[2];
XmlQueryType local4 = (XmlQueryType)((QilFunction)local0).XmlType;
if (( (local0).XmlType .IsSubtypeOf( XmlQueryTypeFactory.NodeS ) ) && (this[XmlILOptimization.AnnotateIndex1])) {
if ((( local1.Count == 2 ) && ( ( (QilNode) (local1)[0] ).XmlType .IsSubtypeOf( XmlQueryTypeFactory.Node ) )) && ( ( ( (QilNode) (local1)[1] ).XmlType ) == ( XmlQueryTypeFactory.StringX ) )) {
if (local2.NodeType == QilNodeType.Filter) {
QilNode local5 = local2[0];
QilNode local7 = local2[1];
if (local5.NodeType == QilNodeType.For) {
QilNode local6 = local5[0];
if (local7.NodeType == QilNodeType.Not) {
QilNode local8 = local7[0];
if (local8.NodeType == QilNodeType.IsEmpty) {
QilNode local9 = local8[0];
if (local9.NodeType == QilNodeType.Filter) {
QilNode local10 = local9[0];
QilNode local12 = local9[1];
if (local10.NodeType == QilNodeType.For) {
QilNode local11 = local10[0];
if (local12.NodeType == QilNodeType.Eq) {
QilNode local13 = local12[0];
QilNode local14 = local12[1];
if (local13 == local10) {
if (local14.NodeType == QilNodeType.Parameter) {
if ( (local14) == ( (QilNode) (local1)[1] ) ) {
if (AllowReplace(XmlILOptimization.AnnotateIndex1, local0)) {
// The following conditions must be true for this pattern to match:
// 1. The function must have exactly two arguments
// 2. The type of the first argument must be a subtype of Node
// 3. The type of the second argument must be String
// 4. The return type must be a subtype of Node*
// 5. Every reference to $args[0] (context document) must be wrapped in an (Root *) function
// 6. $keyParam cannot be used with the $bindingNodes and $bindingKeys expressions
EqualityIndexVisitor visitor = new EqualityIndexVisitor();
if (visitor.Scan(local6, local1[0], local14) && visitor.Scan(local11, local1[0], local14)) {
// All conditions were true, so annotate Filter with the EqualityIndex pattern
OptimizerPatterns patt = OptimizerPatterns.Write(local2);
patt.AddPattern(OptimizerPatternName.EqualityIndex);
patt.AddArgument(OptimizerPatternArgument.IndexedNodes, local5);
patt.AddArgument(OptimizerPatternArgument.KeyExpression, local11);
}
}
}
}
}
}
}
}
}
}
}
}
}
}
if (this[XmlILOptimization.AnnotateIndex2]) {
if ((( local1.Count == 2 ) && ( ( ( (QilNode) (local1)[0] ).XmlType ) == ( XmlQueryTypeFactory.Node ) )) && ( ( ( (QilNode) (local1)[1] ).XmlType ) == ( XmlQueryTypeFactory.StringX ) )) {
if (local2.NodeType == QilNodeType.Filter) {
QilNode local5 = local2[0];
QilNode local7 = local2[1];
if (local5.NodeType == QilNodeType.For) {
QilNode local6 = local5[0];
if (local7.NodeType == QilNodeType.Eq) {
QilNode local8 = local7[0];
QilNode local9 = local7[1];
if (local9.NodeType == QilNodeType.Parameter) {
if ( (local9) == ( (QilNode) (local1)[1] ) ) {
if (AllowReplace(XmlILOptimization.AnnotateIndex2, local0)) {
// Same as EqualityIndex1, except that each nodes has at most one key value
EqualityIndexVisitor visitor = new EqualityIndexVisitor();
if (visitor.Scan(local6, local1[0], local9) && visitor.Scan(local8, local1[0], local9)) {
// All conditions were true, so annotate Filter with the EqualityIndex pattern
OptimizerPatterns patt = OptimizerPatterns.Write(local2);
patt.AddPattern(OptimizerPatternName.EqualityIndex);
patt.AddArgument(OptimizerPatternArgument.IndexedNodes, local5);
patt.AddArgument(OptimizerPatternArgument.KeyExpression, local8);
}
}
}
}
}
}
}
}
}
return NoReplace(local0);
}
//-----------------------------------------------
// function definition and invocation
//-----------------------------------------------
public QilFunction Function(QilNode arguments, QilNode definition, QilNode sideEffects, XmlQueryType xmlType) {
QilFunction n = new QilFunction(QilNodeType.Function, arguments, definition, sideEffects, xmlType);
n.XmlType = this.typeCheck.CheckFunction(n);
TraceNode(n);
return n;
}
protected virtual QilNode VisitFunction(QilFunction n)
{
return(VisitChildren(n));
}
protected virtual QilNode VisitFunctionReference(QilFunction n)
{
return(n);
}
protected override QilNode VisitFunction(QilFunction n) { return NoReplace(n); }