protected virtual MethodCallExpression Visit(ExecuteFilterExp execExp)
{
AccessInfo info = new AccessInfo();
var stack = new Stack <Tuple <string, Type> >();
Visit(execExp.GetfieldExp, stack, info);
var accessFieldExp = info.exp;
if (info.FieldType != stack.Peek().Item2)
{
throw new Exception();
}
if (!info.FieldType.IsGenericType || !(info.FieldType.GetGenericTypeDefinition() == typeof(List <>)))
{
throw new Exception();
}
var method = Visit(execExp.FilterExp, info.FieldType.GetGenericArguments()[0]);
var thisLoopMethodInfo = loopMethodInfo.MakeGenericMethod(info.FieldType.GetGenericArguments()[0]);
var exp = Expression.Call(thisLoopMethodInfo, accessFieldExp, Expression.Constant(method));
var tempDelegate = Expression.Lambda(exp, rootParam.Peek()).Compile();
var methodwar = typeof(Template).GetMethod(nameof(Template.F));
var realMethodWar = methodwar.MakeGenericMethod(rootParam.Peek().Type);
return(Expression.Call(realMethodWar, rootParam.Peek(), Expression.Constant(tempDelegate)));
}
protected virtual void Visit(ExecuteFilterExp execExp)
{
Visit(execExp.GetfieldExp);
Visit(execExp.FilterExp);
}
