Added a Shared Version of LocalDateTome

[skilesare]

I want to use this as a stable/shared type in another library and it seems that having the functions keeps it from being stored as stable/returned from functions properly. Some more work can be done to add conversion functions, but for now I'll leave it as is.

[Gekctek]

@skilesare does this change i made work for you?
FixedTimeZone is weird cause its a variant thats annoying to deal with since they all evaluate to seconds
Added a toComponentsWithOffset() to the localdatetime

[skilesare]

I was probably a bit quick with my requests here...basically, it looks like the types are set up well for classes that have a bunch of calculations branched off of them(which was exactly what was asked for). The issue is that you can't put classes in a stable variable and/or you can't send a class down as the response to a function because it is not a shared variable.

I guess what I'm saying is that we need some shared types and some functions like toShared and fromShared that can be used if you want to return a DateTime type as the result of a function(as opposed to dumping it to an Int).

I ended up crafting the types in my other project and they look like this:

public type Year = {
    year : Int;
  };

  public type Month = {
    month : Nat; //1 based
  };

  public type Day = {
    day : Nat; // 1 based
  };

  public type MonthDay = Month and Day;

  public type YearMonth = Month and Year;

  public type DateComponents = Year and Month and Day;

  public type TimeComponents = {
    hour : Nat;
    minute : Nat;
    second : Decimal;
  };

  public type FixedTimeZone = {
    #hours : Int;
    #seconds : Int;
  };

  public type Time = TimeComponents and {
    fixedTimeZone: FixedTimeZone;
  };


  public type DateTime = DateComponents and TimeComponents and {
    fixedTimeZone: FixedTimeZone
  };

I'm basically trying to create stable variables that I can use to store values that are defined in the XSD spec: https://www.w3.org/TR/2012/REC-xmlschema11-2-20120405/datatypes.html#language

[Gekctek]

I guess Im still confused.
What would the signatures of the toShared and fromShared look like
My thought was that DateTime <-> Nanoseconds and LocalDateTime <-> ComponentsWithOffset
like LocalDateTime(componentsWithOffset, #fixed(#seconds(componentsWithOffset.offset));
I can make a helper function for that

[Gekctek]

hmmmm. well my solution only works if you dont modify the LocalDateTime since its fixed