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-- Programmed by Jedidiah Barber
-- Licensed under the Sunset License v1.0
-- See license.txt for further details
with
Ada.Characters.Latin_1,
Ada.Strings.Fixed;
package body Kompsos.Pretty_Print is
package Latin renames Ada.Characters.Latin_1;
package Str renames Ada.Strings;
function Image
(Item : in Integer)
return String is
begin
return Str.Fixed.Trim (Integer'Image (Item), Str.Left);
end Image;
function Image
(Item : in ID_Number)
return String is
begin
return Str.Fixed.Trim (ID_Number'Image (Item), Str.Left);
end Image;
function Image
(Item : in Variable)
return String is
begin
return "Vargen#" & Image (ID_Number (Item.Ident)) &
(if SU.Length (Item.Name) /= 0
then "/" & SU.To_String (Item.Name)
else "");
end Image;
function Image
(Item : in Term)
return String
is
function Bare
(Item : in Term)
return String is
begin
case Item.Kind is
when Null_Term =>
return "()";
when Atom_Term =>
return Element_Image (Item.Atom);
when Var_Term =>
return Image (Item.Var);
when Pair_Term =>
if Item.Right.Kind = Null_Term then
return Image (Item.Left);
elsif Item.Right.Kind /= Pair_Term then
return Image (Item.Left) & " . " & Bare (Item.Right);
else
return Image (Item.Left) & " " & Bare (Item.Right);
end if;
end case;
end Bare;
begin
if Item.Kind = Pair_Term then
return "(" & Bare (Item) & ")";
else
return Bare (Item);
end if;
end Image;
function Image
(Item : in State)
return String
is
Result : SU.Unbounded_String;
begin
SU.Append (Result, Latin.HT & "Generation:");
if Item.Ident.Is_Empty then
SU.Append (Result, " N/A" & Latin.LF);
else
SU.Append (Result, Latin.LF);
for Iter in Item.Ident.Iterate loop
SU.Append (Result, Latin.HT & Latin.HT & "Vargen#" &
Image (ID_Number (ID_Number_Maps.Key (Iter))) & " => " &
Image (ID_Number (ID_Number_Maps.Element (Iter))) & Latin.LF);
end loop;
end if;
SU.Append (Result, Latin.HT & "Variables:");
if Item.LVars.Is_Empty then
SU.Append (Result, " N/A" & Latin.LF);
else
SU.Append (Result, Latin.LF);
for Index in Item.LVars.First_Index .. Item.LVars.Last_Index loop
SU.Append (Result, Latin.HT & Latin.HT &
"Var#" & Image (ID_Number (Index)) &
(if SU.Length (Item.LVars (Index)) /= 0
then "/" & SU.To_String (Item.LVars (Index))
else "") & Latin.LF);
end loop;
end if;
SU.Append (Result, Latin.HT & "Substitution:");
if Item.Subst.Is_Empty then
SU.Append (Result, " N/A" & Latin.LF);
else
SU.Append (Result, Latin.LF);
for Iter in Item.Subst.Iterate loop
SU.Append (Result, Latin.HT & Latin.HT &
Image (ID_Number (Binding_Maps.Key (Iter))) & " => " &
Image (Binding_Maps.Element (Iter)) & Latin.LF);
end loop;
end if;
return -Result;
end Image;
function Image
(Item : in out World)
return String
is
Result : SU.Unbounded_String;
Counter : Positive := 1;
begin
if not Item.Has_State (Counter) then
return "States: N/A" & Latin.LF;
end if;
loop
SU.Append (Result, "State#" & Image (Counter) & ":" & Latin.LF);
SU.Append (Result, Image (Item.Possibles.Constant_Reference (Counter)));
Counter := Counter + 1;
exit when not Item.Has_State (Counter);
end loop;
return SU.Slice (Result, 1, SU.Length (Result) - 1);
end Image;
function Image_Constant
(Item : in World)
return String
is
Scratch : World := Item;
begin
return Image (Scratch);
end Image_Constant;
end Kompsos.Pretty_Print;
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