private bool IsUserCallNodeDelegable(TexlNode node, TexlBinding binding)
{
if ((node is DottedNameNode) &&
(node.AsDottedName().Left is CallNode) &&
(binding.GetInfo(node.AsDottedName().Left.AsCall()).Function is ICustomDelegationFunction customDelFunc) &&
customDelFunc.IsUserCallNodeDelegable())
{
return(true);
}
return(false);
}
internal static DType GetEnumType(IntellisenseData.IntellisenseData intellisenseData, TexlNode node)
{
Contracts.AssertValue(intellisenseData);
Contracts.AssertValue(node);
DottedNameNode dottedNode;
FirstNameNode firstNameNode;
if ((dottedNode = node.AsDottedName()) != null)
{
return(intellisenseData.Binding.GetType(dottedNode.Left));
}
if ((firstNameNode = node.AsFirstName()) != null)
{
FirstNameInfo firstNameInfo = intellisenseData.Binding.GetInfo(firstNameNode).VerifyValue();
DPath parent = firstNameInfo.Path.Parent;
if (!parent.Name.IsValid)
{
return(DType.Unknown);
}
if (intellisenseData.TryGetEnumSymbol(parent.Name, intellisenseData.Binding, out EnumSymbol enumSymbol))
{
return(enumSymbol.EnumType);
}
}
return(DType.Unknown);
}
private bool TryGetValidSortOrder(TexlNode argNode, TexlBinding binding, out string validatedOrder)
{
Contracts.AssertValue(argNode);
Contracts.AssertValue(binding);
validatedOrder = "";
if (binding.ErrorContainer.HasErrors(argNode))
{
return(false);
}
switch (argNode.Kind)
{
case NodeKind.FirstName:
return(TryGetValidSortOrderNode(argNode.AsFirstName(), binding, out validatedOrder));
case NodeKind.DottedName:
return(TryGetValidSortOrderNode(argNode.AsDottedName(), binding, out validatedOrder));
case NodeKind.StrLit:
return(TryGetValidSortOrderNode(argNode.AsStrLit(), out validatedOrder));
default:
TrackingProvider.Instance.AddSuggestionMessage("Invalid sortorder node type", argNode, binding);
return(false);
}
}
public bool TryGetValidValue(TexlNode argNode, TexlBinding binding, out IList <FirstNameNode> dsNodes)
{
Contracts.AssertValue(argNode);
Contracts.AssertValue(binding);
dsNodes = new List <FirstNameNode>();
FirstNameNode dsNode;
switch (argNode.Kind)
{
case NodeKind.FirstName:
if (TryGetDsNode(argNode.AsFirstName(), binding, out dsNode))
{
dsNodes.Add(dsNode);
}
break;
case NodeKind.Call:
return(TryGetDsNodes(argNode.AsCall(), binding, out dsNodes));
case NodeKind.DottedName:
return(TryGetDsNode(argNode.AsDottedName(), binding, out dsNodes));
}
return(dsNodes.Count > 0);
}
protected bool IsValidNode(TexlNode node, TexlBinding binding)
{
Contracts.AssertValue(node);
Contracts.AssertValue(binding);
bool isAsync = binding.IsAsync(node);
bool isPure = binding.IsPure(node);
if (node is DottedNameNode &&
((binding.GetType(node.AsDottedName().Left).Kind == DKind.OptionSet && binding.GetType(node).Kind == DKind.OptionSetValue) ||
(binding.GetType(node.AsDottedName().Left).Kind == DKind.View && binding.GetType(node).Kind == DKind.ViewValue)))
{
// OptionSet and View Access are delegable despite being async
return(true);
}
if (node is CallNode && (binding.IsBlockScopedConstant(node) ||
(binding.GetInfo(node as CallNode).Function is AsTypeFunction)))
{
// AsType is delegable despite being async
return(true);
}
// Async predicates and impure nodes are not supported.
// Let CallNodes for User() be marked as being Valid to allow
// expressions with User() calls to be delegated
if (!(IsUserCallNodeDelegable(node, binding)) && (isAsync || !isPure))
{
var telemetryMessage = string.Format("Kind:{0}, isAsync:{1}, isPure:{2}", node.Kind, isAsync, isPure);
SuggestDelegationHintAndAddTelemetryMessage(node, binding, telemetryMessage);
if (isAsync)
{
TrackingProvider.Instance.SetDelegationTrackerStatus(DelegationStatus.AsyncPredicate, node, binding, _function);
}
if (!isPure)
{
TrackingProvider.Instance.SetDelegationTrackerStatus(DelegationStatus.ImpureNode, node, binding, _function, DelegationTelemetryInfo.CreateImpureNodeTelemetryInfo(node, binding));
}
return(false);
}
return(true);
}
public bool TryGetValidValue(TexlNode argNode, TexlBinding binding, out IExpandInfo entityInfo)
{
Contracts.AssertValue(argNode);
Contracts.AssertValue(binding);
entityInfo = null;
switch (argNode.Kind)
{
case NodeKind.FirstName:
return(TryGetEntityInfo(argNode.AsFirstName(), binding, out entityInfo));
case NodeKind.Call:
return(TryGetEntityInfo(argNode.AsCall(), binding, out entityInfo));
case NodeKind.DottedName:
return(TryGetEntityInfo(argNode.AsDottedName(), binding, out entityInfo));
}
return(false);
}
public bool TryGetValidValue(TexlNode argNode, TexlBinding binding, out IExternalDataSource dsInfo)
{
Contracts.AssertValue(argNode);
Contracts.AssertValue(binding);
dsInfo = null;
switch (argNode.Kind)
{
case NodeKind.FirstName:
return(TryGetDsInfo(argNode.AsFirstName(), binding, out dsInfo));
case NodeKind.Call:
return(TryGetDsInfo(argNode.AsCall(), binding, out dsInfo));
case NodeKind.DottedName:
return(TryGetDsInfo(argNode.AsDottedName(), binding, out dsInfo));
case NodeKind.As:
return(TryGetValidValue(argNode.AsAsNode().Left, binding, out dsInfo));
}
return(false);
}
// Verifies if given kind of node is supported by function delegation.
private bool IsSupportedNode(TexlNode node, OperationCapabilityMetadata metadata, TexlBinding binding, IOpDelegationStrategy opDelStrategy, bool isRHSNode)
{
Contracts.AssertValue(node);
Contracts.AssertValue(metadata);
Contracts.AssertValue(binding);
Contracts.AssertValue(opDelStrategy);
if (!binding.IsRowScope(node))
{
// Check whether this is -
// 1) in operator delegation and
// 2) it is verifying if RHS node is supported and
// 3) it is not an async node and
// 4) it is a single column table and
// 5) metadata belongs to cds datasource that supports delegation of CdsIn
// If this check fails, verify if it is simply a valid node..
// Eg of valid delegation functions -
// Filter(Accounts, 'Account Name' in ["Foo", Bar"]) - Direct table use
// Set(Names, ["Foo", Bar"]); Filter(Accounts, 'Account Name' in Names) - Using variable of type table
// ClearCollect(Names, Accounts); Filter(Accounts, 'Account Name' in Names.'Account Name') - using column from collection.
// This won't be delegated - Filter(Accounts, 'Account Name' in Accounts.'Account Name') as Accounts.'Account Name' is async.
if ((binding.Document.Properties.EnabledFeatures.IsEnhancedDelegationEnabled &&
isRHSNode && (opDelStrategy as BinaryOpDelegationStrategy)?.Op == BinaryOp.In && !binding.IsAsync(node) && binding.GetType(node).IsTable&& binding.GetType(node).IsColumn&&
metadata.IsDelegationSupportedByTable(DelegationCapability.CdsIn)) ||
IsValidNode(node, binding))
{
return(true);
}
}
switch (node.Kind)
{
case NodeKind.DottedName:
{
if (!opDelStrategy.IsOpSupportedByTable(metadata, node, binding))
{
return(false);
}
var dottedNodeValStrategy = _function.GetDottedNameNodeDelegationStrategy();
return(dottedNodeValStrategy.IsValidDottedNameNode(node.AsDottedName(), binding, metadata, opDelStrategy));
}
case NodeKind.Call:
{
if (!opDelStrategy.IsOpSupportedByTable(metadata, node, binding))
{
return(false);
}
var cNodeValStrategy = _function.GetCallNodeDelegationStrategy();
return(cNodeValStrategy.IsValidCallNode(node.AsCall(), binding, metadata));
}
case NodeKind.FirstName:
{
var firstNameNodeValStrategy = _function.GetFirstNameNodeDelegationStrategy();
return(firstNameNodeValStrategy.IsValidFirstNameNode(node.AsFirstName(), binding, opDelStrategy));
}
case NodeKind.UnaryOp:
{
if (!opDelStrategy.IsOpSupportedByTable(metadata, node, binding))
{
return(false);
}
var unaryopNode = node.AsUnaryOpLit();
IOpDelegationStrategy unaryOpNodeDelegationStrategy = _function.GetOpDelegationStrategy(unaryopNode.Op);
return(unaryOpNodeDelegationStrategy.IsSupportedOpNode(unaryopNode, metadata, binding));
}
case NodeKind.BinaryOp:
{
if (!opDelStrategy.IsOpSupportedByTable(metadata, node, binding))
{
return(false);
}
var binaryOpNode = node.AsBinaryOp().VerifyValue();
opDelStrategy = _function.GetOpDelegationStrategy(binaryOpNode.Op, binaryOpNode);
var binaryOpDelStrategy = (opDelStrategy as BinaryOpDelegationStrategy).VerifyValue();
Contracts.Assert(binaryOpNode.Op == binaryOpDelStrategy.Op);
if (!opDelStrategy.IsSupportedOpNode(node, metadata, binding))
{
SuggestDelegationHint(binaryOpNode, binding);
return(false);
}
break;
}
default:
{
var kind = node.Kind;
if (kind != NodeKind.BoolLit && kind != NodeKind.StrLit && kind != NodeKind.NumLit)
{
var telemetryMessage = string.Format("NodeKind {0} unsupported.", kind);
SuggestDelegationHintAndAddTelemetryMessage(node, binding, telemetryMessage);
return(false);
}
break;
}
}
return(true);
}
private bool IsSupportedNode(TexlNode node, OperationCapabilityMetadata metadata, TexlBinding binding, IOpDelegationStrategy opDelStrategy)
{
Contracts.AssertValue(node);
Contracts.AssertValue(metadata);
Contracts.AssertValue(binding);
Contracts.AssertValue(opDelStrategy);
if (!binding.IsRowScope(node))
{
return(true);
}
switch (node.Kind)
{
case NodeKind.DottedName:
{
if (!opDelStrategy.IsOpSupportedByTable(metadata, node, binding))
{
return(false);
}
var dottedNodeValStrategy = _function.GetDottedNameNodeDelegationStrategy();
return(dottedNodeValStrategy.IsValidDottedNameNode(node.AsDottedName(), binding, metadata, opDelStrategy));
}
case NodeKind.Call:
{
if (!opDelStrategy.IsOpSupportedByTable(metadata, node, binding))
{
return(false);
}
var cNodeValStrategy = _function.GetCallNodeDelegationStrategy();
return(cNodeValStrategy.IsValidCallNode(node.AsCall(), binding, metadata));
}
case NodeKind.FirstName:
{
var firstNameNodeValStrategy = _function.GetFirstNameNodeDelegationStrategy();
return(firstNameNodeValStrategy.IsValidFirstNameNode(node.AsFirstName(), binding, opDelStrategy));
}
case NodeKind.UnaryOp:
{
if (!opDelStrategy.IsOpSupportedByTable(metadata, node, binding))
{
return(false);
}
UnaryOpNode unaryOpNode = node.AsUnaryOpLit().VerifyValue();
opDelStrategy = _function.GetOpDelegationStrategy(unaryOpNode.Op).VerifyValue();
var unaryOpDelStrategy = (opDelStrategy as UnaryOpDelegationStrategy).VerifyValue();
Contracts.Assert(unaryOpDelStrategy.Op == unaryOpNode.Op);
if (!opDelStrategy.IsSupportedOpNode(node, metadata, binding))
{
SuggestDelegationHint(node, binding);
return(false);
}
return(true);
}
case NodeKind.BinaryOp:
{
if (!opDelStrategy.IsOpSupportedByTable(metadata, node, binding))
{
return(false);
}
var binaryOpNode = node.AsBinaryOp().VerifyValue();
IOpDelegationStrategy binaryOpNodeDelValidationStrategy = _function.GetOpDelegationStrategy(binaryOpNode.Op, binaryOpNode);
return(binaryOpNodeDelValidationStrategy.IsSupportedOpNode(node.AsBinaryOp(), metadata, binding));
}
}
SuggestDelegationHint(node, binding);
return(false);
}
protected bool IsValidDelegatableFilterPredicateNode(TexlNode dsNode, TexlBinding binding, FilterOpMetadata filterMetadata)
{
Contracts.AssertValue(dsNode);
Contracts.AssertValue(binding);
Contracts.AssertValue(filterMetadata);
var firstNameStrategy = GetFirstNameNodeDelegationStrategy();
var dottedNameStrategy = GetDottedNameNodeDelegationStrategy();
var cNodeStrategy = GetCallNodeDelegationStrategy();
NodeKind kind;
kind = dsNode.Kind;
switch (kind)
{
case NodeKind.BinaryOp:
{
BinaryOpNode opNode = dsNode.AsBinaryOp();
var binaryOpNodeValidationStrategy = GetOpDelegationStrategy(opNode.Op, opNode);
Contracts.AssertValue(opNode);
if (!binaryOpNodeValidationStrategy.IsSupportedOpNode(opNode, filterMetadata, binding))
{
return(false);
}
break;
}
case NodeKind.FirstName:
{
if (!firstNameStrategy.IsValidFirstNameNode(dsNode.AsFirstName(), binding, null))
{
return(false);
}
break;
}
case NodeKind.DottedName:
{
if (!dottedNameStrategy.IsValidDottedNameNode(dsNode.AsDottedName(), binding, filterMetadata, null))
{
return(false);
}
break;
}
case NodeKind.UnaryOp:
{
UnaryOpNode opNode = dsNode.AsUnaryOpLit();
var unaryOpNodeValidationStrategy = GetOpDelegationStrategy(opNode.Op);
Contracts.AssertValue(opNode);
if (!unaryOpNodeValidationStrategy.IsSupportedOpNode(opNode, filterMetadata, binding))
{
SuggestDelegationHint(dsNode, binding);
return(false);
}
break;
}
case NodeKind.Call:
{
if (!cNodeStrategy.IsValidCallNode(dsNode.AsCall(), binding, filterMetadata))
{
return(false);
}
break;
}
default:
{
if (kind != NodeKind.BoolLit)
{
SuggestDelegationHint(dsNode, binding, string.Format("Not supported node {0}.", kind));
return(false);
}
break;
}
}
return(true);
}
