// 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);
}
public override bool IsRowScopedServerDelegatable(CallNode callNode, TexlBinding binding, OperationCapabilityMetadata metadata)
{
Contracts.AssertValue(callNode);
Contracts.AssertValue(binding);
Contracts.AssertValue(metadata);
if (binding.ErrorContainer.HasErrors(callNode) ||
!CheckArgsCount(callNode, binding) ||
!binding.IsRowScope(callNode))
{
return(false);
}
TexlNode[] args = callNode.Args.Children.VerifyValue();
NodeKind argKind = args[0].VerifyValue().Kind;
var opStrategy = GetOpDelegationStrategy(UnaryOp.Not);
var firstNameStrategy = GetFirstNameNodeDelegationStrategy();
var dottedStrategy = GetDottedNameNodeDelegationStrategy();
var cNodeStrategy = GetCallNodeDelegationStrategy();
switch (argKind)
{
case NodeKind.FirstName:
return(firstNameStrategy.IsValidFirstNameNode(args[0].AsFirstName(), binding, opStrategy));
case NodeKind.Call:
{
if (!opStrategy.IsOpSupportedByTable(metadata, callNode, binding))
{
return(false);
}
return(cNodeStrategy.IsValidCallNode(args[0].AsCall(), binding, metadata));
}
case NodeKind.BinaryOp:
{
if (!opStrategy.IsOpSupportedByTable(metadata, callNode, binding))
{
return(false);
}
BinaryOpNode opNode = args[0].AsBinaryOp();
IOpDelegationStrategy binaryOpNodeValidationStrategy = GetOpDelegationStrategy(opNode.Op, opNode);
return(binaryOpNodeValidationStrategy.IsSupportedOpNode(opNode, metadata, binding));
}
case NodeKind.UnaryOp:
{
if (!opStrategy.IsOpSupportedByTable(metadata, callNode, binding))
{
return(false);
}
UnaryOpNode opNode = args[0].AsUnaryOpLit();
var unaryOpNodeValidationStrategy = GetOpDelegationStrategy(opNode.Op);
return(unaryOpNodeValidationStrategy.IsSupportedOpNode(opNode, metadata, binding));
}
case NodeKind.DottedName:
return(dottedStrategy.IsValidDottedNameNode(args[0].AsDottedName(), binding, metadata, opStrategy));
default:
return(argKind == NodeKind.BoolLit);
}
}
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);
}