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);
}
// Gets the inner most function and the current arg index from the current node, if any.
// If there is no inner most function, current arg index will be -1
// and argument count will be -1.
internal static bool TryGetInnerMostFunction(TexlNode nodeCur, TexlBinding bind, out TexlFunction funcCur, out int iarg, out int carg)
{
Contracts.AssertValue(nodeCur);
Contracts.AssertValue(bind);
TexlNode nodeParent = nodeCur.Parent;
TexlNode nodeCallArg = nodeCur;
CallNode callNode = null;
while (nodeParent != null)
{
if (nodeParent.Kind == NodeKind.Call)
{
callNode = nodeParent.AsCall();
break;
}
// The last node before a call's list node is the call arg.
if (nodeParent.Kind != NodeKind.List)
{
nodeCallArg = nodeParent;
}
nodeParent = nodeParent.Parent;
}
if (callNode == null)
{
iarg = -1;
carg = -1;
funcCur = null;
return(false);
}
Contracts.AssertValue(nodeCallArg);
CallInfo info = bind.GetInfo(callNode);
if (info.Function != null)
{
carg = callNode.Args.Count;
for (iarg = 0; iarg < carg; iarg++)
{
if (callNode.Args.Children[iarg] == nodeCallArg)
{
break;
}
}
Contracts.Assert(iarg < carg);
funcCur = (TexlFunction)info.Function;
return(true);
}
iarg = -1;
carg = -1;
funcCur = null;
return(false);
}
public static DelegationTelemetryInfo CreateImpureNodeTelemetryInfo(TexlNode node, TexlBinding binding = null)
{
Contracts.AssertValue(node);
Contracts.AssertValueOrNull(binding);
switch (node.Kind)
{
case NodeKind.Call:
var callNode = node.AsCall();
var funcName = binding?.GetInfo(callNode)?.Function?.Name ?? string.Empty;
return(new DelegationTelemetryInfo(funcName));
default:
return(new DelegationTelemetryInfo(node.ToString()));
}
}
private static CallNode GetNearestCallNode(TexlNode node)
{
Contracts.AssertValue(node);
TexlNode parent = node;
while (parent != null)
{
CallNode callNode;
if ((callNode = parent.AsCall()) != null)
{
return(callNode);
}
parent = parent.Parent;
}
return(null);
}
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);
}