/// <summary>
/// Visits an invocation expression and adds an entry to the set of Reactive
/// entities if it is an invocation of an unbound parameter with a Reactive
/// entity type.
/// </summary>
/// <param name="node">The invocation expression to visit.</param>
/// <returns>The result of visiting the invocation expression.</returns>
protected override ExpressionSlim VisitInvocation(InvocationExpressionSlim node)
{
// If the expression is an invocation of an unbound parameter...
if (node.Expression is ParameterExpressionSlim target && !TryLookup(target, out _))
{
var reactiveEntityType = ReactiveEntityTypeExtensions.FromTypeSlim(target.Type);
reactiveEntityType &= ~ReactiveEntityType.Func;
AddToReactiveEntities(reactiveEntityType, target, node.Arguments);
}
return(base.VisitInvocation(node));
}
/// <summary>
/// Visits a parameter expression and adds an entry to the entities list if
/// the parameter type is a Reactive entity type.
/// </summary>
/// <param name="node">The parameter expression.</param>
/// <returns>The result of visiting the parameter expression.</returns>
protected override ExpressionSlim VisitParameter(ParameterExpressionSlim node)
{
// If the expression is an unbound parameter...
if (!TryLookup(node, out _))
{
var reactiveEntityType = ReactiveEntityTypeExtensions.FromTypeSlim(node.Type);
// ... that is not a parameterized Reactive entity type...
if ((reactiveEntityType & ReactiveEntityType.Func) != ReactiveEntityType.Func)
{
AddToReactiveEntities(reactiveEntityType, node, Array.Empty <ExpressionSlim>());
}
}
return(base.VisitParameter(node));
}
