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419 | with Ada.Strings.Fixed;
with Ada.Strings.UTF_Encoding.Wide_Wide_Strings;
with Ada.Tags;
with Ada.Unchecked_Deallocation;
-- with GNAT.IO; use GNAT.IO;
package body Yeison_Classwide is
use Ada.Finalization;
use Ada.Strings.Unbounded;
---------------
-- Operators --
---------------
package body Operators is
function "+" (This : Vec) return Vec is
begin
return Result : constant Vec := This;
end "+";
---------
-- "/" --
---------
function "/" (L : Any'Class; R : Any'Class) return Vec is
begin
if not R.Is_Scalar then
raise Constraint_Error with
"Only scalars are intended for indexing in paths built with '/'";
end if;
if L in Vec then
return Result : Vec := Vec (L) do
Result.Append (R);
end return;
elsif L.Is_Scalar then
return Result : Vec do
Result.Append (L);
Result.Append (R);
end return;
else
raise Constraint_Error with
"LHS in '/' is not a vector or scalar";
end if;
end "/";
end Operators;
------------
-- Adjust --
------------
overriding procedure Adjust (V : in out Any) is
begin
if V.Concrete /= null then
V.Concrete := new Any'Class'(V.Concrete.all);
end if;
end Adjust;
----------------
-- As_Integer --
----------------
function As_Integer (This : Any'Class) return Integer is
begin
if This.Concrete /= null then
return This.Concrete.As_Integer;
else
return Ada.Numerics.Big_Numbers.Big_Integers.To_Integer (Int (This).Value);
end if;
end As_Integer;
------------
-- As_Map --
------------
function As_Map (This : Any'Class) return access constant Map'Class
is (if This.Concrete /= null
then raise Program_Error with "inner pointer should never be not null for maps"
else Map'Class (This)'Unchecked_Access);
function As_Map (This : Any'Class; Key : String)
return access constant Any'Class
is (Map'Class (This).Constant_Reference (Key));
---------------
-- As_String --
---------------
function As_String (This : Any'Class) return String
is (if This.Concrete /= null
then To_String (Str (This.Concrete.all).Value)
else To_String (Str (This).Value));
------------
-- As_Vec --
------------
function As_Vec (This : Any'Class) return access constant Vec'Class
is (if This.Concrete /= null
then raise Program_Error with "inner pointer should never be not null for vecs"
else Vec'Class (This)'Unchecked_Access);
function As_Vec (This : Any'Class; Index : Positive)
return access constant Any'Class
is (Vec'Class (This).Constant_Reference (Index));
------------------------
-- Constant_Reference --
------------------------
function Constant_Reference (This : Any'Class; Pos : Positive)
return access constant Any'Class
is (if This.Is_Vec
then This.As_Vec.Value.Constant_Reference (Pos).Element
else raise Constraint_Error with
"Attemp to index into a non-vector, container is " & This.Tag);
function Constant_Reference (This : Any'Class; Key : String)
return access constant Any'Class
is (if This.Is_Map
then This.As_Map.Value.Constant_Reference (Key).Element
else raise Constraint_Error with
"Attemp to select from a non-map, container is " & This.Tag);
function Constant_Reference (This : Any'Class;
Path : Vec'Class)
return not null access constant Any'Class
is
begin
if Path.Value.Is_Empty then
raise Constraint_Error with "Attempt to index with empty vector";
end if;
declare
Remaining_Keys : Vec'Class := Path;
First_Key : constant Any'Class := Path.Value.First_Element;
First : access constant Any'Class;
begin
Remaining_Keys.Value.Delete_First;
if This in Map and then First_Key.Is_Str then
First := Map (This).Constant_Reference (First_Key.As_String);
elsif This in Vec and then First_Key.Is_Int then
First := Vec (This).Constant_Reference (First_Key.As_Integer);
else
raise Constraint_Error with
"Mismatch between container and index: "
& "container is " & This.Tag & "; "
& "index is " & First_Key.Tag;
end if;
if Remaining_Keys.Value.Is_Empty then
return First;
else
return Constant_Reference (First.all, Remaining_Keys);
end if;
end;
end Constant_Reference;
---------
-- Get --
---------
function Get (This : Vec; Indices : Vec'Class)
return not null access constant Any'Class
is (This.Constant_Reference (Indices));
--------------
-- Finalize --
--------------
overriding procedure Finalize (V : in out Any) is
procedure Free is new Ada.Unchecked_Deallocation (Any'Class, Ptr);
begin
Free (V.Concrete);
end Finalize;
-----------
-- Image --
-----------
function Image (V : Any) return String is
begin
if V.Concrete /= null then
return V.Concrete.Image;
else
return "null";
end if;
end Image;
overriding function Image (V : Bool) return String is
begin
if V.Value then
return "True";
else
return "False";
end if;
end Image;
overriding function Image (V : Int) return String is
begin
return Ada.Strings.Fixed.Trim
(Ada.Numerics.Big_Numbers.Big_Integers.To_String (V.Value),
Side => Ada.Strings.Both);
end Image;
overriding function Image (V : Real) return String is
begin
return Ada.Strings.Fixed.Trim
(Ada.Numerics.Big_Numbers.Big_Reals.To_String (V.Value),
Side => Ada.Strings.Both);
end Image;
overriding function Image (V : Str) return String is
begin
return """" & To_String (V.Value) & """";
end Image;
overriding function Image (V : Map) return String is
use Maps;
Result : Unbounded_String := To_Unbounded_String ("(");
begin
for I in V.Value.Iterate loop
Append (Result, """" & Key (I) & """" & " => " & Element (I).Image);
if I /= V.Value.Last then
Append (Result, ", ");
end if;
end loop;
Append (Result, ")");
return To_String (Result);
end Image;
overriding function Image (V : Vec) return String is
use Vectors;
Result : Unbounded_String := To_Unbounded_String ("(");
begin
for I in V.Value.Iterate loop
Append (Result, Element (I).Image);
if I /= V.Value.Last then
Append (Result, ", ");
else
Append (Result, ")");
end if;
end loop;
return To_String (Result);
end Image;
---------------
-- Is_Scalar --
---------------
function Is_Scalar (This : Any'Class) return Boolean is
begin
return
(This.Concrete /= null and then This.Concrete.Is_Scalar)
or else This in Bool | Int | Real | Str;
end Is_Scalar;
------------
-- Length --
------------
function Length (This : Vec) return Positive is (Positive (This.Value.Length));
---------
-- Tag --
---------
function Tag (This : Any'Class) return String
is (Ada.Tags.External_Tag (This'Tag));
------------
-- To_Int --
------------
function To_Int (Img : String) return Any is
begin
return (Controlled with Concrete =>
new Int'(Controlled with
Concrete => null,
Value => Ada.Numerics.Big_Numbers.Big_Integers.From_String (Img)));
end To_Int;
-------------
-- To_Real --
-------------
function To_Real (Img : String) return Any is
begin
return (Controlled with Concrete =>
new Real'(Controlled with
Concrete => null,
Value => Ada.Numerics.Big_Numbers.Big_Reals.From_String (Img)));
end To_Real;
------------
-- To_Str --
------------
function To_Str (Img : Wide_Wide_String) return Any is
begin
return (Controlled with Concrete =>
new Str'(Controlled with
Concrete => null,
Value =>
To_Unbounded_String
(Ada.Strings.UTF_Encoding.Wide_Wide_Strings.Encode (Img))));
end To_Str;
------------
-- To_Int --
------------
overriding function To_Int (S : String) return Int is
begin
return (Controlled with
Concrete => null,
Value => Ada.Numerics.Big_Numbers.Big_Integers.From_String (S));
end To_Int;
-------------
-- To_Real --
-------------
overriding function To_Real (Img : String) return Real is
begin
return (Controlled with
Concrete => null,
Value => Ada.Numerics.Big_Numbers.Big_Reals.From_String (Img));
end To_Real;
------------
-- To_Str --
------------
overriding function To_Str (Img : Wide_Wide_String) return Str is
begin
return (Controlled with
Concrete => null,
Value =>
To_Unbounded_String
(Ada.Strings.UTF_Encoding.Wide_Wide_Strings.Encode (Img)));
end To_Str;
-----------
-- Empty --
-----------
function Empty return Map is
begin
return Map'(Controlled with Concrete => null, Value => Maps.Empty);
end Empty;
------------
-- Insert --
------------
procedure Insert
(This : in out Map; Key : String; Value : Any'Class)
is
begin
This.Value.Insert (Key, Value);
end Insert;
-----------
-- Empty --
-----------
function Empty return Vec is
begin
return Vec'(Controlled with Concrete => null, Value => Vectors.Empty);
end Empty;
------------
-- Append --
------------
procedure Append (This : in out Vec; Value : Any'Class) is
begin
This.Value.Append (Value);
end Append;
------------
-- To_Int --
------------
overriding function To_Int (S : String) return Vec is
begin
return Result : Vec do
Result.Append (Int'(To_Int (S)));
end return;
end To_Int;
overriding function To_Real (Img : String) return Vec is
begin
return Result : Vec do
Result.Append (Real'(To_Real (Img)));
end return;
end To_Real;
------------
-- To_Str --
------------
overriding function To_Str (S : Wide_Wide_String) return Vec is
begin
return Result : Vec do
Result.Append (Str'(To_Str (S)));
end return;
end To_Str;
end Yeison_Classwide;
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