protected override bool EmitInternal(LambdaExpression node, EmittingContext context, GroboIL.Label returnDefaultValueLabel, ResultType whatReturn, bool extend, out Type resultType)
{
var parameterTypes = node.Parameters.Select(parameter => parameter.Type).ToArray();
Type[] constantTypes;
var compiledLambda = CompileAndLoadConstants(node, context, out constantTypes);
var il = context.Il;
Type rawSubLambdaType;
if (!Extensions.IsMono)
{
context.LoadCompiledLambdaPointer(compiledLambda);
rawSubLambdaType = typeof(IntPtr);
}
else
{
rawSubLambdaType = Extensions.GetDelegateType(constantTypes.Concat(parameterTypes).ToArray(), node.ReturnType);
context.LoadCompiledLambda(compiledLambda);
il.Castclass(rawSubLambdaType);
}
resultType = Extensions.GetDelegateType(parameterTypes, node.ReturnType);
var types = constantTypes.Concat(new[] { rawSubLambdaType }).ToArray();
var module = (ModuleBuilder)(context.TypeBuilder == null ? null : context.TypeBuilder.Module);
var subLambdaInvoker = DynamicMethodInvokerBuilder.BuildDynamicMethodInvoker(module, constantTypes, node.ReturnType, parameterTypes);
il.Newobj(subLambdaInvoker.GetConstructor(types));
il.Ldftn(subLambdaInvoker.GetMethod("Invoke"));
il.Newobj(resultType.GetConstructor(new[] { typeof(object), typeof(IntPtr) }));
return(false);
}