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324 | with Ada.Characters.Conversions;
with Ada.Strings.Wide_Wide_Fixed;
package body Cashe.Money_Handling is
function Same_Currency
(This : Money; Item : Money)
return Boolean is
use Currency_Handling;
begin
return This.Cur = Item.Cur;
end Same_Currency;
function Is_Custom_Currency (This : Money) return Boolean is
use Currency_Handling;
begin
return This.Cur.Which_Currency_Type = Type_Custom_Currency;
end Is_Custom_Currency;
function Get_Currency
(This : Money) return Currency_Handling.Currency_Data is
(This.Cur);
function Currency_Name (This : Money) return Wide_Wide_String is
use Currency_Handling;
use Ada.Characters.Conversions;
begin
case This.Cur.Which_Currency_Type is
when Type_Custom_Currency =>
return This.Cur.Custom_Code.Name;
when Type_ISO_Currency =>
return To_Wide_Wide_String (This.Cur.ISO_Code.Name);
end case;
end Currency_Name;
function Currency_Code (This : Money) return Wide_Wide_String is
use Currency_Handling;
use Ada.Characters.Conversions;
begin
case This.Cur.Which_Currency_Type is
when Type_Custom_Currency =>
return This.Cur.Custom_Code.Code;
when Type_ISO_Currency =>
return To_Wide_Wide_String (This.Cur.ISO_Code.Code);
end case;
end Currency_Code;
function Currency_Symbol (This : Money) return Wide_Wide_String is
use Currency_Handling;
begin
case This.Cur.Which_Currency_Type is
when Type_Custom_Currency => return This.Cur.Custom_Code.Symbol;
when Type_ISO_Currency => return This.Cur.ISO_Code.Symbol;
end case;
end Currency_Symbol;
function Currency_Unit (This : Money) return Natural is
use Currency_Handling;
begin
case This.Cur.Which_Currency_Type is
when Type_Custom_Currency => return This.Cur.Custom_Code.Unit;
when Type_ISO_Currency => return This.Cur.ISO_Code.Unit;
end case;
end Currency_Unit;
function Is_Zero (This : Money) return Boolean is (This.Amount = 0.0);
function Is_Positive (This : Money) return Boolean is (This.Amount > 0.0);
function Is_Negative (This : Money) return Boolean is (This.Amount < 0.0);
function Round
(This : Money;
By : Natural;
Method : Round_Method := Half_Even)
return Money
is ((Amount => Round (This.Amount, By, Method), Cur => This.Cur));
function Round (This : Money; Method : Round_Method := Half_Even)
return Money is
(This.Round (By => This.Currency_Unit, Method => Method));
function Full_Precision (This : Money) return Decimal is (This.Amount);
function As_Major (This : Money) return Decimal is (This.Round.Amount);
function As_Minor (This : Money) return Decimal_Minor
is
use Currency_Handling;
Multiplier : constant Long_Long_Float := 10.0 **
(case This.Cur.Which_Currency_Type is
when Type_Custom_Currency => This.Cur.Custom_Code.Unit,
when Type_ISO_Currency => This.Cur.ISO_Code.Unit);
begin
return Decimal_Minor
(Decimal'Round
(Long_Long_Float (This.Round.Amount) * Multiplier));
end As_Minor;
-- Operator overloading
function "+" (Left, Right : Money) return Money is
(if Left.Same_Currency (Right) then
(Amount => Left.Amount + Right.Amount, Cur => Left.Cur)
else raise Currency_Mismatch);
function "+" (Left : Money; Right : Decimal) return Money is
((Amount => Left.Amount + Right, Cur => Left.Cur));
function "+" (Left : Money; Right : Decimal_Minor) return Money is
(Left + Decimal (Right));
function "-" (Left : Money) return Money is
((Amount => -(Left.Amount), Cur => Left.Cur));
function "-" (Left, Right : Money) return Money is
(if Left.Same_Currency (Right) then
(Amount => Left.Amount - Right.Amount, Cur => Left.Cur)
else raise Currency_Mismatch);
function "-" (Left : Money; Right : Decimal) return Money is
((Amount => Left.Amount - Right, Cur => Left.Cur));
function "-" (Left : Money; Right : Decimal_Minor) return Money is
(Left - Decimal (Right));
function "*" (Left, Right : Money) return Money is
(if Left.Same_Currency (Right) then
(Amount => Left.Amount * Right.Amount, Cur => Left.Cur)
else raise Currency_Mismatch);
function "*" (Left : Money; Right : Decimal) return Money is
((Amount => Left.Amount * Right, Cur => Left.Cur));
function "*" (Left : Money; Right : Decimal_Minor) return Money is
(Left * Decimal (Right));
function "/" (Left, Right : Money) return Money is
(if Left.Same_Currency (Right) then
(if not Right.Is_Zero then
(Amount => Left.Amount / Right.Amount, Cur => Left.Cur)
else raise Division_By_Zero)
else raise Currency_Mismatch);
function "/" (Left : Money; Right : Decimal) return Money is
((Amount => Left.Amount / Right, Cur => Left.Cur));
function "/" (Left : Money; Right : Decimal_Minor) return Money is
(Left / Decimal (Right));
function "abs" (Left : Money) return Money is
((Amount => abs Left.Amount, Cur => Left.Cur));
-- Logical stuff.
function "<" (Left, Right : Money) return Boolean is
(if Left.Same_Currency (Right) then
(Left.Amount < Right.Amount) or else
raise Currency_Mismatch);
function ">" (Left, Right : Money) return Boolean is
(if Left.Same_Currency (Right) then
(Left.Amount > Right.Amount) or else
raise Currency_Mismatch);
function "<=" (Left, Right : Money) return Boolean is
(if Left.Same_Currency (Right) then
(Left.Amount <= Right.Amount) or else
raise Currency_Mismatch);
function ">=" (Left, Right : Money) return Boolean is
(if Left.Same_Currency (Right) then
(Left.Amount >= Right.Amount) or else
raise Currency_Mismatch);
overriding function "=" (Left : Money; Right : Money) return Boolean is
begin
return Left.Same_Currency (Right) and then
Left.Round.Amount = Right.Round.Amount;
end "=";
function "<" (Left : Money; Right : Decimal) return Boolean is
(Left.Amount < Right);
function ">" (Left : Money; Right : Decimal) return Boolean is
(Left.Amount > Right);
function "<=" (Left : Money; Right : Decimal) return Boolean is
(Left.Amount <= Right);
function ">=" (Left : Money; Right : Decimal) return Boolean is
(Left.Amount >= Right);
function "=" (Left : Money; Right : Decimal) return Boolean is
(Left.Round.Amount = Right);
function "<" (Left : Money; Right : Decimal_Major) return Boolean is
(Left.Amount < Decimal (Right));
function ">" (Left : Money; Right : Decimal_Major) return Boolean is
(Left.Amount > Decimal (Right));
function "<=" (Left : Money; Right : Decimal_Major) return Boolean is
(Left.Amount <= Decimal (Right));
function ">=" (Left : Money; Right : Decimal_Major) return Boolean is
(Left.Amount >= Decimal (Right));
function "=" (Left : Money; Right : Decimal_Major) return Boolean is
(Left.Round.Amount = Decimal (Right));
-- Creation functions
-- Major Decimals
function From_Major
(Amount : Decimal;
Currency_Used : Currency_Handling.Currency_Data)
return Money is
(((Amount => Amount,
Cur => Currency_Used)));
function From_Major
(Amount : Decimal;
Currency_Used : Currency_Handling.Custom_Currency)
return Money is
use Currency_Handling;
CC : constant Currency_Data := (Type_Custom_Currency, Currency_Used);
begin
return From_Major (Amount, CC);
end From_Major;
function From_Major
(Amount : Decimal;
Currency_Used : ISO.Currencies.Currency)
return Money is
use Currency_Handling;
CC : constant Currency_Data := (Type_ISO_Currency, Currency_Used);
begin
return From_Major (Amount, CC);
end From_Major;
function From_Major
(Amount : Decimal;
Currency_Used : ISO.Currencies.Alphabetic_Code)
return Money is
(From_Major (Amount, ISO.Currencies.From_Code (Currency_Used)));
-- Major Long_Long_Ints
function From_Major
(Amount : Decimal_Major;
Currency_Used : Currency_Handling.Currency_Data)
return Money is (From_Major (Decimal (Amount), Currency_Used));
function From_Major
(Amount : Decimal_Major;
Currency_Used : Currency_Handling.Custom_Currency)
return Money is (From_Major (Decimal (Amount), Currency_Used));
function From_Major
(Amount : Decimal_Major;
Currency_Used : ISO.Currencies.Currency)
return Money is (From_Major (Decimal (Amount), Currency_Used));
function From_Major
(Amount : Decimal_Major;
Currency_Used : ISO.Currencies.Alphabetic_Code)
return Money is (From_Major (Decimal (Amount), Currency_Used));
-- Major - Strings
function From_Major
(Amount : String;
Currency_Used : Currency_Handling.Currency_Data)
return Money is (From_Major (Decimal'Value (Amount), Currency_Used));
function From_Major
(Amount : String;
Currency_Used : Currency_Handling.Custom_Currency)
return Money is (From_Major (Decimal'Value (Amount), Currency_Used));
function From_Major
(Amount : String;
Currency_Used : ISO.Currencies.Currency)
return Money is (From_Major (Decimal'Value (Amount), Currency_Used));
function From_Major
(Amount : String;
Currency_Used : ISO.Currencies.Alphabetic_Code)
return Money is (From_Major (Decimal'Value (Amount), Currency_Used));
-- Minor - Decimals
function From_Minor
(Amount : Decimal_Minor;
Currency_Used : Currency_Handling.Currency_Data)
return Money
is
use Currency_Handling;
Unit : constant Natural :=
(case Currency_Used.Which_Currency_Type is
when Type_Custom_Currency =>
Currency_Used.Custom_Code.Unit,
when Type_ISO_Currency =>
Currency_Used.ISO_Code.Unit);
Amount_Width : constant Natural := Integer_Width (Amount);
True_Amount : constant Decimal :=
(if Amount_Width - Max_Integer_Len <= Unit then
To_Decimal (Amount, Unit)
else raise Minor_Unit_Too_Large);
begin
return From_Major (True_Amount, Currency_Used);
end From_Minor;
function From_Minor
(Amount : Decimal_Minor;
Currency_Used : Currency_Handling.Custom_Currency)
return Money
is
use Currency_Handling;
CC : constant Currency_Data := (Type_Custom_Currency, Currency_Used);
begin
return From_Minor (Amount, CC);
end From_Minor;
function From_Minor
(Amount : Decimal_Minor;
Currency_Used : ISO.Currencies.Currency)
return Money
is
use Currency_Handling;
CC : constant Currency_Data := (Type_ISO_Currency, Currency_Used);
begin
return From_Minor (Amount, CC);
end From_Minor;
function From_Minor
(Amount : Decimal_Minor;
Currency_Used : ISO.Currencies.Alphabetic_Code)
return Money is
(From_Minor (Amount, ISO.Currencies.From_Code (Currency_Used)));
-- Minor - String
function From_Minor
(Amount : String;
Currency_Used : Currency_Handling.Currency_Data)
return Money is (From_Minor (Decimal_Minor'Value (Amount), Currency_Used));
function From_Minor
(Amount : String;
Currency_Used : Currency_Handling.Custom_Currency)
return Money is (From_Minor (Decimal_Minor'Value (Amount), Currency_Used));
function From_Minor
(Amount : String;
Currency_Used : ISO.Currencies.Currency)
return Money is (From_Minor (Decimal_Minor'Value (Amount), Currency_Used));
function From_Minor
(Amount : String;
Currency_Used : ISO.Currencies.Alphabetic_Code)
return Money is (From_Minor (Decimal_Minor'Value (Amount), Currency_Used));
procedure Print_Money
(Buffer : in out Ada.Strings.Text_Buffers.Root_Buffer_Type'Class;
Value : Money)
is
use ISO.Currencies;
use Currency_Handling;
use Ada.Strings.Wide_Wide_Fixed;
Unit : constant Natural :=
(case Value.Cur.Which_Currency_Type is
when Type_Custom_Currency => Value.Cur.Custom_Code.Unit,
when Type_ISO_Currency => Value.Cur.ISO_Code.Unit);
Amt : constant Wide_Wide_String :=
Value.Round.Amount'Wide_Wide_Image;
Point : constant Natural := Index (Amt, ".");
begin
Buffer.Wide_Wide_Put
(Value.Currency_Symbol & Amt (Amt'First .. Point - 1));
if Unit > 0 then
Buffer.Wide_Wide_Put (Amt (Point .. Point + Unit));
end if;
end Print_Money;
end Cashe.Money_Handling;
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