public static CodegenExpression EvaluateCodegen(
ExprEventIdentityEqualsNodeForge forge,
CodegenMethodScope parent,
ExprForgeCodegenSymbol symbols,
CodegenClassScope classScope)
{
var method = parent.MakeChild(typeof(bool?), typeof(ExprEventIdentityEqualsNodeEval), classScope);
method.Block
.DeclareVar<EventBean>("left", ArrayAtIndex(symbols.GetAddEPS(method), Constant(forge.UndLeft.StreamId)))
.DeclareVar<EventBean>("right", ArrayAtIndex(symbols.GetAddEPS(method), Constant(forge.UndRight.StreamId)))
.IfCondition(Or(EqualsNull(Ref("left")), EqualsNull(Ref("right"))))
.BlockReturn(ConstantNull())
.MethodReturn(StaticMethod<object>("Equals", Ref("left"), Ref("right")));
return LocalMethod(method);
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
if (this.ChildNodes.Length != 2)
{
throw new ExprValidationException(NAME + "requires two parameters");
}
ExprStreamUnderlyingNode undOne = CheckStreamUnd(this.ChildNodes[0]);
ExprStreamUnderlyingNode undTwo = CheckStreamUnd(this.ChildNodes[1]);
if (undOne.EventType != undTwo.EventType)
{
throw new ExprValidationException(
NAME +
" received two different event types as parameter, type '" +
undOne.EventType.Name +
"' is not the same as type '" +
undTwo.EventType.Name +
"'");
}
forge = new ExprEventIdentityEqualsNodeForge(this, undOne, undTwo);
return(null);
}
