public EnumMinMaxByEventsForgeEval(
EnumMinMaxByEventsForge forge,
ExprEvaluator innerExpression)
{
_forge = forge;
_innerExpression = innerExpression;
}
public static CodegenExpression Codegen(
EnumMinMaxByEventsForge forge,
EnumForgeCodegenParams args,
CodegenMethodScope codegenMethodScope,
CodegenClassScope codegenClassScope)
{
var innerType = forge.InnerExpression.EvaluationType;
var innerTypeBoxed = Boxing.GetBoxedType(innerType);
var paramTypes = EnumForgeCodegenNames.PARAMS;
var scope = new ExprForgeCodegenSymbol(false, null);
var methodNode = codegenMethodScope
.MakeChildWithScope(typeof(EventBean), typeof(EnumMinMaxByEventsForgeEval), scope, codegenClassScope)
.AddParam(paramTypes);
var block = methodNode.Block
.DeclareVar(innerTypeBoxed, "minKey", ConstantNull())
.DeclareVar<EventBean>("result", ConstantNull());
var forEach = block.ForEach(typeof(EventBean), "next", EnumForgeCodegenNames.REF_ENUMCOLL)
.AssignArrayElement(EnumForgeCodegenNames.REF_EPS, Constant(forge.StreamNumLambda), Ref("next"))
.DeclareVar(
innerTypeBoxed,
"value",
forge.InnerExpression.EvaluateCodegen(innerTypeBoxed, methodNode, scope, codegenClassScope))
.IfRefNull("value")
.BlockContinue();
forEach.IfCondition(EqualsNull(Ref("minKey")))
.AssignRef("minKey", Ref("value"))
.AssignRef("result", Ref("next"))
.IfElse()
.IfCondition(
Relational(
ExprDotMethod(Unbox(Ref("minKey"), innerTypeBoxed), "CompareTo", Ref("value")),
forge.max ? LT : GT,
Constant(0)))
.AssignRef("minKey", Ref("value"))
.AssignRef("result", Ref("next"));
block.MethodReturn(Ref("result"));
return LocalMethod(methodNode, args.Eps, args.Enumcoll, args.IsNewData, args.ExprCtx);
}
