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Ada: add seq

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This commit is contained in:
Chris M Moore 2016-03-22 07:40:44 +00:00
parent d2bb60d32e
commit 316d5bbd7c
1 changed files with 50 additions and 0 deletions
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50
ada/core.adb
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@ -942,6 +942,52 @@ package body Core is
end Conj;
function Seq (Rest_Handle : Mal_Handle)
return Types.Mal_Handle is
First_Param, Res : Mal_Handle;
begin
First_Param := Car (Deref_List (Rest_Handle).all);
case Deref (First_Param).Sym_Type is
when Nil => return First_Param;
when List =>
case Deref_List (First_Param).Get_List_Type is
when List_List =>
if Is_Null (Deref_List (First_Param).all) then
return New_Nil_Mal_Type;
else
return First_Param;
end if;
when Vector_List =>
if Vector.Is_Null (Vector.Deref_Vector (First_Param).all) then
return New_Nil_Mal_Type;
else
return Vector.Duplicate (Vector.Deref_Vector (First_Param).all);
end if;
when others => raise Mal_Exception;
end case;
when Str =>
declare
Param_Str : String := Deref_String (First_Param).Get_String;
String_Handle : Mal_Handle;
L_Ptr : List_Ptr;
begin
if Param_Str'Length <= 2 then
return New_Nil_Mal_Type; -- ""
else
Res := New_List_Mal_Type (List_List);
L_Ptr := Deref_List (Res);
for I in Param_Str'First+1 .. Param_Str'Last-1 loop
String_Handle:= New_String_Mal_Type ('"' &Param_Str (I) & '"');
Append (L_Ptr.all, String_Handle);
end loop;
return Res;
end if;
end;
when others => raise Mal_Exception;
end case;
end Seq;
Start_Time : Ada.Calendar.Time := Ada.Calendar.Clock;
function Time_Ms (Rest_Handle : Mal_Handle)
@ -1144,6 +1190,10 @@ package body Core is
"conj",
New_Func_Mal_Type ("conj", Conj'access));
Envs.Set (Repl_Env,
"seq",
New_Func_Mal_Type ("seq", Seq'access));
Envs.Set (Repl_Env,
"time-ms",
New_Func_Mal_Type ("time-ms", Time_Ms'access));