public static CodegenExpression Codegen(
EnumTakeForge forge,
EnumForgeCodegenParams args,
CodegenMethodScope codegenMethodScope,
CodegenClassScope codegenClassScope)
{
var scope = new ExprForgeCodegenSymbol(false, null);
var returnType = typeof(FlexCollection);
var paramTypes = EnumForgeCodegenNames.PARAMS;
var methodNode = codegenMethodScope.MakeChildWithScope(
typeof(FlexCollection),
typeof(EnumTakeForgeEval),
scope,
codegenClassScope)
.AddParam(paramTypes);
var sizeType = forge.SizeEval.EvaluationType;
var block = methodNode.Block
.DebugStack()
.DeclareVar(
sizeType,
"size",
forge.SizeEval.EvaluateCodegen(sizeType, methodNode, scope, codegenClassScope));
if (sizeType.CanBeNull()) {
block.IfRefNullReturnNull("size");
}
block.MethodReturn(
StaticMethod(
typeof(EnumTakeForgeEval),
"EvaluateEnumTakeMethod",
EnumForgeCodegenNames.REF_ENUMCOLL,
SimpleNumberCoercerFactory.CoercerInt.CodegenInt(Ref("size"), sizeType)));
return LocalMethod(methodNode, args.Eps, args.Enumcoll, args.IsNewData, args.ExprCtx);
}
public EnumForgeDesc MakeEnumForgeDesc(
IList<ExprDotEvalParam> bodiesAndParameters,
int streamCountIncoming,
StatementCompileTimeServices services)
{
ExprForge sizeEval = bodiesAndParameters[0].BodyForge;
EnumForge forge;
if (_enumMethod == EnumMethodEnum.TAKE) {
forge = new EnumTakeForge(sizeEval, streamCountIncoming, _isScalar);
}
else {
forge = new EnumTakeLastForge(sizeEval, streamCountIncoming, _isScalar);
}
return new EnumForgeDesc(_type, forge);
}