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when ']' =>
Snailfish_Number.Append (Closing_Bracket);
when '0' .. '9' =>
Ada.Integer_Text_IO.Get (Char & "", Value, Last);
Snailfish_Number.Append (Value);
when others =>
null;
end case;
File_Is_Empty := False;
end loop;
Input.Append (Snailfish_Number);
Function Definition: procedure Main is
Function Body: use Ada.Execution_Time,
Ada.Real_Time,
Ada.Text_IO;
use Utils;
Opening_Bracket : constant := -2;
Closing_Bracket : constant := -1;
subtype Snailfish_Values is Integer range Opening_Bracket .. Integer'Last;
package Snailfish_Math_List is new Ada.Containers.Doubly_Linked_Lists (Element_Type => Snailfish_Values,
"=" => "=");
use Snailfish_Math_List;
function "+" (Left, Right : List) return List;
function "+" (Left, Right : List) return List is
Result : List := Copy (Left);
begin
Result.Prepend (New_Item => Opening_Bracket,
Count => 1);
for Elt of Right loop
Result.Append (Elt);
end loop;
Result.Append (Closing_Bracket);
return Result;
end "+";
function "+" (Left : Snailfish_Math_List.Cursor; Right : Positive) return Snailfish_Math_List.Cursor;
function "+" (Left : Snailfish_Math_List.Cursor; Right : Positive) return Snailfish_Math_List.Cursor is
Result : Snailfish_Math_List.Cursor := Left;
begin
for Index in 1 .. Right loop
Result := Next (Result);
end loop;
return Result;
end "+";
function "-" (Left : Snailfish_Math_List.Cursor; Right : Positive) return Snailfish_Math_List.Cursor;
function "-" (Left : Snailfish_Math_List.Cursor; Right : Positive) return Snailfish_Math_List.Cursor is
Result : Snailfish_Math_List.Cursor := Left;
begin
for Index in 1 .. Right loop
Result := Previous (Result);
end loop;
return Result;
end "-";
procedure Put (Snailfish_Number : List);
procedure Put (Snailfish_Number : List) is
Curs : Snailfish_Math_List.Cursor := Snailfish_Number.First;
begin
while Has_Element (Curs) loop
case Element (Curs) is
when Opening_Bracket =>
Put ("[");
when Closing_Bracket =>
Put ("]");
if Has_Element (Curs + 1) and then Element (Curs + 1) = Opening_Bracket then
Put (", ");
end if;
when others =>
if Element (Curs - 1) > Closing_Bracket then
Put (", ");
end if;
Ada.Integer_Text_IO.Put (Item => Element (Curs), Width => 0);
end case;
Curs := Curs + 1;
end loop;
end Put;
package Snailfish_Math_Vectors is new Ada.Containers.Vectors (Index_Type => Natural,
Element_Type => List,
"=" => "=");
use Snailfish_Math_Vectors;
function Pop (Vec : in out Vector) return List;
function Pop (Vec : in out Vector) return List is
Result : List;
begin
if Vec.Is_Empty then
raise Constraint_Error with "Container is empty";