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2021 | -----------------------------------------------------------------------
-- util-beans-objects -- Generic Typed Data Representation
-- Copyright (C) 2009, 2010, 2011, 2013, 2016, 2017, 2018, 2020, 2022 Stephane Carrez
-- Written by Stephane Carrez (Stephane.Carrez@gmail.com)
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-----------------------------------------------------------------------
with Ada.Characters.Conversions;
with Ada.Tags;
with Ada.Strings.UTF_Encoding.Wide_Wide_Strings;
with Util.Beans.Basic;
package body Util.Beans.Objects is
use Util.Concurrent.Counters;
use Ada.Characters.Conversions;
function UTF8_Decode (S : in String) return Wide_Wide_String
renames Ada.Strings.UTF_Encoding.Wide_Wide_Strings.Decode;
-- Find the data type to be used for an arithmetic operation between two objects.
function Get_Arithmetic_Type (Left, Right : Object) return Data_Type;
-- Find the data type to be used for a composition operation between two objects.
function Get_Compose_Type (Left, Right : Object) return Data_Type;
-- Find the best type to be used to compare two operands.
function Get_Compare_Type (Left, Right : Object) return Data_Type;
Integer_Type : aliased constant Int_Type := Int_Type '(null record);
Bool_Type : aliased constant Boolean_Type := Boolean_Type '(null record);
Str_Type : aliased constant String_Type := String_Type '(null record);
WString_Type : aliased constant Wide_String_Type := Wide_String_Type '(null record);
Flt_Type : aliased constant Float_Type := Float_Type '(null record);
Duration_Type : aliased constant Duration_Type_Def := Duration_Type_Def '(null record);
Bn_Type : aliased constant Bean_Type := Bean_Type '(null record);
Ar_Type : aliased constant Array_Type := Array_Type '(null record);
Blob_Def : aliased constant Blob_Type := Blob_Type '(null record);
-- ------------------------------
-- Convert the value into a wide string.
-- ------------------------------
overriding
function To_Wide_Wide_String (Type_Def : in Basic_Type;
Value : in Object_Value) return Wide_Wide_String is
begin
return UTF8_Decode (Object_Type'Class (Type_Def).To_String (Value));
end To_Wide_Wide_String;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in Basic_Type;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def, Value);
begin
return 0.0;
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in Basic_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def, Value);
begin
return False;
end To_Boolean;
-- ------------------------------
-- Convert the value into a duration.
-- ------------------------------
overriding
function To_Duration (Type_Def : in Basic_Type;
Value : in Object_Value) return Duration is
pragma Unreferenced (Type_Def, Value);
begin
return 0.0;
end To_Duration;
-- ------------------------------
-- Returns False
-- ------------------------------
overriding
function Is_Empty (Type_Def : in Basic_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def, Value);
begin
return False;
end Is_Empty;
-- ------------------------------
-- Null Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : Null_Type) return String is
pragma Unreferenced (Type_Def);
begin
return "Null";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : Null_Type) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_NULL;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in Null_Type;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def, Value);
begin
return "null";
end To_String;
-- ------------------------------
-- Returns True
-- ------------------------------
overriding
function Is_Empty (Type_Def : in Null_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def, Value);
begin
return True;
end Is_Empty;
-- ------------------------------
-- Integer Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : Int_Type) return String is
pragma Unreferenced (Type_Def);
begin
return "Integer";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : Int_Type) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_INTEGER;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in Int_Type;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def);
S : constant String := Long_Long_Integer'Image (Value.Int_Value);
begin
if Value.Int_Value >= 0 then
return S (S'First + 1 .. S'Last);
else
return S;
end if;
end To_String;
-- ------------------------------
-- Convert the value into an integer.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in Int_Type;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def);
begin
return Value.Int_Value;
end To_Long_Long;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in Int_Type;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def);
begin
return Long_Long_Float (Value.Int_Value);
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in Int_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
begin
return Value.Int_Value /= 0;
end To_Boolean;
-- ------------------------------
-- Convert the value into a duration.
-- ------------------------------
overriding
function To_Duration (Type_Def : in Int_Type;
Value : in Object_Value) return Duration is
pragma Unreferenced (Type_Def);
begin
return Duration (Value.Int_Value);
end To_Duration;
-- ------------------------------
-- Float Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : in Float_Type) return String is
pragma Unreferenced (Type_Def);
begin
return "Float";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : in Float_Type) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_FLOAT;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in Float_Type;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def);
begin
return Long_Long_Float'Image (Value.Float_Value);
end To_String;
-- ------------------------------
-- Convert the value into an integer.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in Float_Type;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def);
begin
return Long_Long_Integer (Value.Float_Value);
end To_Long_Long;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in Float_Type;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def);
begin
return Value.Float_Value;
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in Float_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
begin
return Value.Float_Value /= 0.0;
end To_Boolean;
-- ------------------------------
-- Convert the value into a duration.
-- ------------------------------
overriding
function To_Duration (Type_Def : in Float_Type;
Value : in Object_Value) return Duration is
pragma Unreferenced (Type_Def);
begin
return Duration (Value.Float_Value);
end To_Duration;
-- ------------------------------
-- String Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : in String_Type) return String is
pragma Unreferenced (Type_Def);
begin
return "String";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : in String_Type) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_STRING;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in String_Type;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def);
Proxy : constant String_Proxy_Access := Value.String_Proxy;
begin
if Proxy = null then
return "null";
else
return Proxy.Value;
end if;
end To_String;
-- ------------------------------
-- Convert the value into an integer.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in String_Type;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def);
Proxy : constant String_Proxy_Access := Value.String_Proxy;
begin
if Proxy = null then
return 0;
else
return Long_Long_Integer'Value (Proxy.Value);
end if;
end To_Long_Long;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in String_Type;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def);
Proxy : constant String_Proxy_Access := Value.String_Proxy;
begin
if Proxy = null then
return 0.0;
else
return Long_Long_Float'Value (Proxy.Value);
end if;
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in String_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
Proxy : constant String_Proxy_Access := Value.String_Proxy;
begin
return Proxy /= null
and then (Proxy.Value = "true"
or else Proxy.Value = "TRUE"
or else Proxy.Value = "1");
end To_Boolean;
-- ------------------------------
-- Returns True if the value is empty.
-- ------------------------------
overriding
function Is_Empty (Type_Def : in String_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
Proxy : constant String_Proxy_Access := Value.String_Proxy;
begin
return Proxy = null or else Proxy.Value = "";
end Is_Empty;
-- ------------------------------
-- Convert the value into a duration.
-- ------------------------------
overriding
function To_Duration (Type_Def : in String_Type;
Value : in Object_Value) return Duration is
pragma Unreferenced (Type_Def);
Proxy : constant String_Proxy_Access := Value.String_Proxy;
begin
if Proxy = null then
return 0.0;
else
return Duration'Value (Proxy.Value);
end if;
end To_Duration;
-- ------------------------------
-- Wide String Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : in Wide_String_Type) return String is
pragma Unreferenced (Type_Def);
begin
return "WideString";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : in Wide_String_Type) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_WIDE_STRING;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in Wide_String_Type;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def);
Proxy : constant Wide_String_Proxy_Access := Value.Wide_Proxy;
begin
if Proxy = null then
return "null";
else
return To_String (Proxy.Value);
end if;
end To_String;
-- ------------------------------
-- Convert the value into a wide string.
-- ------------------------------
overriding
function To_Wide_Wide_String (Type_Def : in Wide_String_Type;
Value : in Object_Value) return Wide_Wide_String is
pragma Unreferenced (Type_Def);
Proxy : constant Wide_String_Proxy_Access := Value.Wide_Proxy;
begin
if Proxy = null then
return "null";
else
return Proxy.Value;
end if;
end To_Wide_Wide_String;
-- ------------------------------
-- Convert the value into an integer.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in Wide_String_Type;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def);
Proxy : constant Wide_String_Proxy_Access := Value.Wide_Proxy;
begin
if Proxy = null then
return 0;
else
return Long_Long_Integer'Value (To_String (Proxy.Value));
end if;
end To_Long_Long;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in Wide_String_Type;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def);
Proxy : constant Wide_String_Proxy_Access := Value.Wide_Proxy;
begin
if Proxy = null then
return 0.0;
else
return Long_Long_Float'Value (To_String (Proxy.Value));
end if;
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in Wide_String_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
Proxy : constant Wide_String_Proxy_Access := Value.Wide_Proxy;
begin
return Proxy /= null
and then (Proxy.Value = "true"
or else Proxy.Value = "TRUE"
or else Proxy.Value = "1");
end To_Boolean;
-- ------------------------------
-- Convert the value into a duration.
-- ------------------------------
overriding
function To_Duration (Type_Def : in Wide_String_Type;
Value : in Object_Value) return Duration is
pragma Unreferenced (Type_Def);
Proxy : constant Wide_String_Proxy_Access := Value.Wide_Proxy;
begin
if Proxy = null then
return 0.0;
else
return Duration'Value (To_String (Proxy.Value));
end if;
end To_Duration;
-- ------------------------------
-- Returns True if the value is empty.
-- ------------------------------
overriding
function Is_Empty (Type_Def : in Wide_String_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
Proxy : constant Wide_String_Proxy_Access := Value.Wide_Proxy;
begin
return Proxy = null or else Proxy.Value = "";
end Is_Empty;
-- ------------------------------
-- Boolean Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : in Boolean_Type) return String is
pragma Unreferenced (Type_Def);
begin
return "Boolean";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : in Boolean_Type) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_BOOLEAN;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in Boolean_Type;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def);
begin
if Value.Bool_Value then
return "TRUE";
else
return "FALSE";
end if;
end To_String;
-- ------------------------------
-- Convert the value into an integer.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in Boolean_Type;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def);
begin
if Value.Bool_Value then
return 1;
else
return 0;
end if;
end To_Long_Long;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in Boolean_Type;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def);
begin
if Value.Bool_Value then
return 1.0;
else
return 0.0;
end if;
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in Boolean_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
begin
return Value.Bool_Value;
end To_Boolean;
-- ------------------------------
-- Duration Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : in Duration_Type_Def) return String is
pragma Unreferenced (Type_Def);
begin
return "Duration";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : in Duration_Type_Def) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_TIME;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in Duration_Type_Def;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def);
begin
return Duration'Image (Value.Time_Value);
end To_String;
-- ------------------------------
-- Convert the value into an integer.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in Duration_Type_Def;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def);
begin
return Long_Long_Integer (Value.Time_Value);
end To_Long_Long;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in Duration_Type_Def;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def);
begin
return Long_Long_Float (Value.Time_Value);
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in Duration_Type_Def;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
begin
return Value.Time_Value > 0.0;
end To_Boolean;
-- ------------------------------
-- Convert the value into a duration.
-- ------------------------------
overriding
function To_Duration (Type_Def : in Duration_Type_Def;
Value : in Object_Value) return Duration is
pragma Unreferenced (Type_Def);
begin
return Value.Time_Value;
end To_Duration;
-- ------------------------------
-- Bean Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : in Bean_Type) return String is
pragma Unreferenced (Type_Def);
begin
return "Bean";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : in Bean_Type) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_BEAN;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in Bean_Type;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def);
begin
if Value.Proxy = null or else Value.Proxy.Bean = null then
return "<null bean>";
else
return "<" & Ada.Tags.Expanded_Name (Value.Proxy.Bean'Tag) & ">";
end if;
end To_String;
-- ------------------------------
-- Convert the value into an integer.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in Bean_Type;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def, Value);
begin
return 0;
end To_Long_Long;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in Bean_Type;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def, Value);
begin
return 0.0;
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in Bean_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
Proxy : constant Bean_Proxy_Access := Value.Proxy;
begin
return Proxy /= null;
end To_Boolean;
-- ------------------------------
-- Returns True if the value is empty.
-- ------------------------------
overriding
function Is_Empty (Type_Def : in Bean_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
Proxy : constant Bean_Proxy_Access := Value.Proxy;
begin
if Proxy = null then
return True;
end if;
if not (Proxy.all in Bean_Proxy'Class) then
return False;
end if;
if not (Proxy.Bean.all in Util.Beans.Basic.List_Bean'Class) then
return False;
end if;
declare
L : constant Util.Beans.Basic.List_Bean_Access :=
Beans.Basic.List_Bean'Class (Proxy.Bean.all)'Unchecked_Access;
begin
return L.Get_Count = 0;
end;
end Is_Empty;
-- ------------------------------
-- Blob Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : in Blob_Type) return String is
pragma Unreferenced (Type_Def);
begin
return "Blob";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : in Blob_Type) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_BLOB;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in Blob_Type;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def);
begin
if Value.Blob_Proxy = null then
return "<null array>";
else
return "<array>";
end if;
end To_String;
-- ------------------------------
-- Convert the value into an integer.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in Blob_Type;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def, Value);
begin
return 0;
end To_Long_Long;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in Blob_Type;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def, Value);
begin
return 0.0;
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in Blob_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
Proxy : constant Blob_Proxy_Access := Value.Blob_Proxy;
begin
return Proxy /= null;
end To_Boolean;
-- ------------------------------
-- Returns True if the value is empty.
-- ------------------------------
overriding
function Is_Empty (Type_Def : in Blob_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
begin
if Value.Blob_Proxy = null then
return True;
else
return Value.Blob_Proxy.Blob.Is_Null;
end if;
end Is_Empty;
-- ------------------------------
-- Array Type
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
overriding
function Get_Name (Type_Def : in Array_Type) return String is
pragma Unreferenced (Type_Def);
begin
return "Array";
end Get_Name;
-- ------------------------------
-- Get the base data type.
-- ------------------------------
overriding
function Get_Data_Type (Type_Def : in Array_Type) return Data_Type is
pragma Unreferenced (Type_Def);
begin
return TYPE_ARRAY;
end Get_Data_Type;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_String (Type_Def : in Array_Type;
Value : in Object_Value) return String is
pragma Unreferenced (Type_Def);
begin
if Value.Array_Proxy = null then
return "<null array>";
else
return "<array>";
end if;
end To_String;
-- ------------------------------
-- Convert the value into an integer.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in Array_Type;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def, Value);
begin
return 0;
end To_Long_Long;
-- ------------------------------
-- Convert the value into a float.
-- ------------------------------
overriding
function To_Long_Float (Type_Def : in Array_Type;
Value : in Object_Value) return Long_Long_Float is
pragma Unreferenced (Type_Def, Value);
begin
return 0.0;
end To_Long_Float;
-- ------------------------------
-- Convert the value into a boolean.
-- ------------------------------
overriding
function To_Boolean (Type_Def : in Array_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
Proxy : constant Array_Proxy_Access := Value.Array_Proxy;
begin
return Proxy /= null;
end To_Boolean;
-- ------------------------------
-- Returns True if the value is empty.
-- ------------------------------
overriding
function Is_Empty (Type_Def : in Array_Type;
Value : in Object_Value) return Boolean is
pragma Unreferenced (Type_Def);
begin
if Value.Array_Proxy = null then
return True;
else
return Value.Array_Proxy.Len = 0;
end if;
end Is_Empty;
-- ------------------------------
-- Convert the value into a string.
-- ------------------------------
overriding
function To_Long_Long (Type_Def : in Basic_Type;
Value : in Object_Value) return Long_Long_Integer is
pragma Unreferenced (Type_Def, Value);
begin
return 0;
end To_Long_Long;
-- ------------------------------
-- Check whether the object contains a value.
-- Returns true if the object does not contain a value.
-- ------------------------------
function Is_Null (Value : in Object) return Boolean is
begin
return Value.V.Of_Type = TYPE_NULL;
end Is_Null;
-- ------------------------------
-- Check whether the object is empty.
-- If the object is null, returns true.
-- If the object is the empty string, returns true.
-- If the object is a list bean whose Get_Count is 0, returns true.
-- Otherwise returns false.
-- ------------------------------
function Is_Empty (Value : in Object) return Boolean is
begin
return Value.Type_Def.Is_Empty (Value.V);
end Is_Empty;
function Get_Array_Bean (Value : in Object) return access Util.Beans.Basic.Array_Bean'Class is
Bean : constant access Util.Beans.Basic.Readonly_Bean'Class := To_Bean (Value);
begin
if Bean = null or else not (Bean.all in Util.Beans.Basic.Array_Bean'Class) then
return null;
else
return Util.Beans.Basic.Array_Bean'Class (Bean.all)'Unchecked_Access;
end if;
end Get_Array_Bean;
-- ------------------------------
-- Returns True if the object is an array.
-- ------------------------------
function Is_Array (Value : in Object) return Boolean is
begin
if Value.V.Of_Type = TYPE_ARRAY then
return True;
elsif Value.V.Of_Type /= TYPE_BEAN then
return False;
else
return Get_Array_Bean (Value) /= null;
end if;
end Is_Array;
-- ------------------------------
-- Generic Object holding a value
-- ------------------------------
-- ------------------------------
-- Get the type name
-- ------------------------------
function Get_Type_Name (Value : in Object) return String is
begin
return Value.Type_Def.Get_Name;
end Get_Type_Name;
-- ------------------------------
-- Get a type identification for the object value.
-- ------------------------------
function Get_Type (Value : in Object) return Data_Type is
begin
return Value.V.Of_Type;
end Get_Type;
-- ------------------------------
-- Get the type definition of the object value.
-- ------------------------------
function Get_Type (Value : Object) return Object_Type_Access is
begin
return Value.Type_Def;
end Get_Type;
-- ------------------------------
-- Get the value identified by the name in the bean object.
-- If the value object is not a bean, returns the null object.
-- ------------------------------
function Get_Value (Value : in Object;
Name : in String) return Object is
Bean : constant access Util.Beans.Basic.Readonly_Bean'Class := To_Bean (Value);
begin
if Bean = null then
return Null_Object;
else
return Bean.Get_Value (Name);
end if;
end Get_Value;
-- ------------------------------
-- Set into the target object a value identified by the name.
-- The target object must be a <tt>Bean</tt> instance that implements the <tt>Set_Value</tt>
-- procedure. The operation does nothing if this is not the case.
-- ------------------------------
procedure Set_Value (Into : in Object;
Name : in String;
Value : in Object) is
Bean : constant access Util.Beans.Basic.Readonly_Bean'Class := To_Bean (Into);
begin
if Bean /= null and then Bean.all in Util.Beans.Basic.Bean'Class then
Util.Beans.Basic.Bean'Class (Bean.all).Set_Value (Name, Value);
end if;
end Set_Value;
-- ------------------------------
-- Get the number of elements in the array object.
-- Returns 0 if the object is not an array.
-- ------------------------------
function Get_Count (From : in Object) return Natural is
use type Util.Beans.Basic.Array_Bean_Access;
Bean : Util.Beans.Basic.Array_Bean_Access;
begin
if From.V.Of_Type = TYPE_ARRAY then
return From.V.Array_Proxy.Len;
elsif From.V.Of_Type /= TYPE_BEAN or else From.V.Proxy = null then
return 0;
else
Bean := Get_Array_Bean (From);
if Bean = null then
return 0;
else
return Bean.Get_Count;
end if;
end if;
end Get_Count;
-- ------------------------------
-- Get the array element at the given position.
-- ------------------------------
function Get_Value (From : in Object;
Position : in Positive) return Object is
use type Util.Beans.Basic.Array_Bean_Access;
Bean : Util.Beans.Basic.Array_Bean_Access;
begin
if From.V.Of_Type = TYPE_BEAN then
Bean := Get_Array_Bean (From);
if Bean /= null then
return Bean.Get_Row (Position);
else
return Null_Object;
end if;
elsif From.V.Of_Type /= TYPE_ARRAY then
return Null_Object;
elsif From.V.Array_Proxy.Len < Position then
return Null_Object;
else
return From.V.Array_Proxy.Values (Position);
end if;
end Get_Value;
-- ------------------------------
-- Convert the object to the corresponding type.
-- ------------------------------
function To_String (Value : Object) return String is
begin
return Value.Type_Def.To_String (Value.V);
end To_String;
-- ------------------------------
-- Convert the object to a wide string.
-- ------------------------------
function To_Wide_Wide_String (Value : Object) return Wide_Wide_String is
begin
return Value.Type_Def.To_Wide_Wide_String (Value.V);
end To_Wide_Wide_String;
-- ------------------------------
-- Convert the object to an unbounded string.
-- ------------------------------
function To_Unbounded_String (Value : Object) return Unbounded_String is
begin
case Value.V.Of_Type is
when TYPE_STRING =>
if Value.V.String_Proxy = null then
return To_Unbounded_String ("null");
end if;
return To_Unbounded_String (Value.V.String_Proxy.Value);
when others =>
return To_Unbounded_String (To_String (Value));
end case;
end To_Unbounded_String;
-- ------------------------------
-- Convert the object to an unbounded wide string.
-- ------------------------------
function To_Unbounded_Wide_Wide_String (Value : Object) return Unbounded_Wide_Wide_String is
begin
case Value.V.Of_Type is
when TYPE_WIDE_STRING =>
if Value.V.Wide_Proxy = null then
return To_Unbounded_Wide_Wide_String ("null");
end if;
return To_Unbounded_Wide_Wide_String (Value.V.Wide_Proxy.Value);
when TYPE_STRING =>
if Value.V.String_Proxy = null then
return To_Unbounded_Wide_Wide_String ("null");
end if;
return To_Unbounded_Wide_Wide_String
(UTF8_Decode (Value.V.String_Proxy.Value));
when others =>
return To_Unbounded_Wide_Wide_String (To_Wide_Wide_String (To_String (Value)));
end case;
end To_Unbounded_Wide_Wide_String;
-- ------------------------------
-- Convert the object to an integer.
-- ------------------------------
function To_Integer (Value : Object) return Integer is
begin
return Integer (Value.Type_Def.To_Long_Long (Value.V));
end To_Integer;
-- ------------------------------
-- Convert the object to an integer.
-- ------------------------------
function To_Long_Integer (Value : Object) return Long_Integer is
begin
return Long_Integer (Value.Type_Def.To_Long_Long (Value.V));
end To_Long_Integer;
-- ------------------------------
-- Convert the object to a long integer.
-- ------------------------------
function To_Long_Long_Integer (Value : Object) return Long_Long_Integer is
begin
return Value.Type_Def.To_Long_Long (Value.V);
end To_Long_Long_Integer;
-- ------------------------------
-- Convert the object to a duration.
-- ------------------------------
function To_Duration (Value : in Object) return Duration is
begin
return Value.Type_Def.To_Duration (Value.V);
end To_Duration;
function To_Bean (Value : in Object) return access Util.Beans.Basic.Readonly_Bean'Class is
begin
if Value.V.Of_Type = TYPE_BEAN and then Value.V.Proxy /= null then
return Value.V.Proxy.Bean;
else
return null;
end if;
end To_Bean;
-- ------------------------------
-- Convert the object to a boolean.
-- ------------------------------
function To_Boolean (Value : Object) return Boolean is
begin
return Value.Type_Def.To_Boolean (Value.V);
end To_Boolean;
-- ------------------------------
-- Convert the object to a float.
-- ------------------------------
function To_Float (Value : Object) return Float is
begin
return Float (Value.Type_Def.To_Long_Float (Value.V));
end To_Float;
-- ------------------------------
-- Convert the object to a long float.
-- ------------------------------
function To_Long_Float (Value : Object) return Long_Float is
begin
return Long_Float (Value.Type_Def.To_Long_Float (Value.V));
end To_Long_Float;
-- ------------------------------
-- Convert the object to a long float.
-- ------------------------------
function To_Long_Long_Float (Value : Object) return Long_Long_Float is
begin
return Value.Type_Def.To_Long_Float (Value.V);
end To_Long_Long_Float;
-- ------------------------------
-- Convert the object to a long float.
-- ------------------------------
function To_Blob (Value : Object) return Util.Blobs.Blob_Ref is
begin
if Value.V.Of_Type = TYPE_BLOB and then Value.V.Blob_Proxy /= null then
return Value.V.Blob_Proxy.Blob;
else
return Util.Blobs.Null_Blob;
end if;
end To_Blob;
-- ------------------------------
-- Convert an integer into a generic typed object.
-- ------------------------------
function To_Object (Value : Integer) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_INTEGER,
Int_Value => Long_Long_Integer (Value)),
Type_Def => Integer_Type'Access);
end To_Object;
-- ------------------------------
-- Convert an integer into a generic typed object.
-- ------------------------------
function To_Object (Value : Long_Integer) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_INTEGER,
Int_Value => Long_Long_Integer (Value)),
Type_Def => Integer_Type'Access);
end To_Object;
-- ------------------------------
-- Convert an integer into a generic typed object.
-- ------------------------------
function To_Object (Value : Long_Long_Integer) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_INTEGER,
Int_Value => Value),
Type_Def => Integer_Type'Access);
end To_Object;
-- ------------------------------
-- Convert a boolean into a generic typed object.
-- ------------------------------
function To_Object (Value : Boolean) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_BOOLEAN,
Bool_Value => Value),
Type_Def => Bool_Type'Access);
end To_Object;
-- ------------------------------
-- Convert a float into a generic typed object.
-- ------------------------------
function To_Object (Value : Float) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_FLOAT,
Float_Value => Long_Long_Float (Value)),
Type_Def => Flt_Type'Access);
end To_Object;
-- ------------------------------
-- Convert a long float into a generic typed object.
-- ------------------------------
function To_Object (Value : Long_Float) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_FLOAT,
Float_Value => Long_Long_Float (Value)),
Type_Def => Flt_Type'Access);
end To_Object;
-- ------------------------------
-- Convert a long long float into a generic typed object.
-- ------------------------------
function To_Object (Value : Long_Long_Float) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_FLOAT,
Float_Value => Value),
Type_Def => Flt_Type'Access);
end To_Object;
-- ------------------------------
-- Convert a duration into a generic typed object.
-- ------------------------------
function To_Object (Value : in Duration) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_TIME,
Time_Value => Value),
Type_Def => Duration_Type'Access);
end To_Object;
-- ------------------------------
-- Convert a string into a generic typed object.
-- ------------------------------
function To_Object (Value : String) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_STRING,
String_Proxy => new String_Proxy '(Ref_Counter => ONE,
Len => Value'Length,
Value => Value)),
Type_Def => Str_Type'Access);
end To_Object;
-- ------------------------------
-- Convert a wide string into a generic typed object.
-- ------------------------------
function To_Object (Value : Wide_Wide_String) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_WIDE_STRING,
Wide_Proxy => new Wide_String_Proxy
'(Ref_Counter => ONE,
Len => Value'Length,
Value => Value)),
Type_Def => WString_Type'Access);
end To_Object;
-- ------------------------------
-- Convert an unbounded string into a generic typed object.
-- ------------------------------
function To_Object (Value : Unbounded_String) return Object is
Len : constant Natural := Length (Value);
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_STRING,
String_Proxy => new String_Proxy
'(Ref_Counter => ONE,
Len => Len,
Value => To_String (Value))),
Type_Def => Str_Type'Access);
end To_Object;
-- ------------------------------
-- Convert a unbounded wide string into a generic typed object.
-- ------------------------------
function To_Object (Value : Unbounded_Wide_Wide_String) return Object is
Len : constant Natural := Length (Value);
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_WIDE_STRING,
Wide_Proxy => new Wide_String_Proxy
'(Ref_Counter => ONE,
Len => Len,
Value => To_Wide_Wide_String (Value))),
Type_Def => WString_Type'Access);
end To_Object;
function To_Object (Value : access Util.Beans.Basic.Readonly_Bean'Class;
Storage : in Storage_Type := DYNAMIC) return Object is
begin
if Value = null then
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_BEAN,
Proxy => null),
Type_Def => Bn_Type'Access);
else
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_BEAN,
Proxy => new Bean_Proxy '(Ref_Counter => ONE,
Bean => Value,
Storage => Storage)),
Type_Def => Bn_Type'Access);
end if;
end To_Object;
function To_Object (Value : in Object_Array) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_ARRAY,
Array_Proxy =>
new Array_Proxy '(Ref_Counter => ONE,
Len => Value'Length,
Count => Value'Length,
Values => Value)),
Type_Def => Ar_Type'Access);
end To_Object;
function To_Object (Value : in Util.Blobs.Blob_Ref) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_BLOB,
Blob_Proxy =>
new Blob_Proxy '(Ref_Counter => ONE,
Blob => Value)),
Type_Def => Blob_Def'Access);
end To_Object;
-- ------------------------------
-- Convert the object to an object of another time.
-- Force the object to be an integer.
-- ------------------------------
function Cast_Integer (Value : Object) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_INTEGER,
Int_Value => Value.Type_Def.To_Long_Long (Value.V)),
Type_Def => Integer_Type'Access);
end Cast_Integer;
-- ------------------------------
-- Force the object to be a float.
-- ------------------------------
function Cast_Float (Value : Object) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_FLOAT,
Float_Value => Value.Type_Def.To_Long_Float (Value.V)),
Type_Def => Flt_Type'Access);
end Cast_Float;
-- ------------------------------
-- Convert the object to an object of another time.
-- Force the object to be a duration.
-- ------------------------------
function Cast_Duration (Value : Object) return Object is
begin
return Object '(Controlled with
V => Object_Value '(Of_Type => TYPE_TIME,
Time_Value => Value.Type_Def.To_Duration (Value.V)),
Type_Def => Duration_Type'Access);
end Cast_Duration;
-- ------------------------------
-- Force the object to be a string.
-- ------------------------------
function Cast_String (Value : Object) return Object is
begin
if Value.V.Of_Type = TYPE_STRING or else Value.V.Of_Type = TYPE_WIDE_STRING then
return Value;
else
return To_Object (To_Wide_Wide_String (Value));
end if;
end Cast_String;
-- ------------------------------
-- Find the best type to be used to compare two operands.
--
-- ------------------------------
function Get_Compare_Type (Left, Right : Object) return Data_Type is
begin
-- Operands are of the same type.
if Left.V.Of_Type = Right.V.Of_Type then
return Left.V.Of_Type;
end if;
-- 12 >= "23"
-- if Left.Of_Type = TYPE_STRING or
case Left.V.Of_Type is
when TYPE_BOOLEAN =>
case Right.V.Of_Type is
when TYPE_INTEGER | TYPE_BOOLEAN | TYPE_TIME =>
return TYPE_INTEGER;
when TYPE_FLOAT | TYPE_STRING | TYPE_WIDE_STRING =>
return Right.V.Of_Type;
when others =>
null;
end case;
when TYPE_INTEGER =>
case Right.V.Of_Type is
when TYPE_BOOLEAN | TYPE_TIME =>
return TYPE_INTEGER;
when TYPE_FLOAT =>
return TYPE_FLOAT;
when others =>
null;
end case;
when TYPE_TIME =>
case Right.V.Of_Type is
when TYPE_INTEGER | TYPE_BOOLEAN | TYPE_FLOAT =>
return TYPE_INTEGER;
when others =>
null;
end case;
when TYPE_FLOAT =>
case Right.V.Of_Type is
when TYPE_INTEGER | TYPE_BOOLEAN =>
return TYPE_FLOAT;
when TYPE_TIME =>
return TYPE_INTEGER;
when others =>
null;
end case;
when others =>
null;
end case;
return TYPE_STRING;
end Get_Compare_Type;
-- ------------------------------
-- Find the data type to be used for an arithmetic operation between two objects.
-- ------------------------------
function Get_Arithmetic_Type (Left, Right : Object) return Data_Type is
begin
if Left.V.Of_Type = TYPE_FLOAT or else Right.V.Of_Type = TYPE_FLOAT then
return TYPE_FLOAT;
end if;
if Left.V.Of_Type = TYPE_INTEGER or else Right.V.Of_Type = TYPE_INTEGER then
return TYPE_INTEGER;
end if;
if Left.V.Of_Type = TYPE_BOOLEAN and then Right.V.Of_Type = TYPE_BOOLEAN then
return TYPE_BOOLEAN;
end if;
return TYPE_FLOAT;
end Get_Arithmetic_Type;
-- ------------------------------
-- Find the data type to be used for a composition operation between two objects.
-- ------------------------------
function Get_Compose_Type (Left, Right : Object) return Data_Type is
begin
if Left.V.Of_Type = Right.V.Of_Type then
return Left.V.Of_Type;
end if;
if Left.V.Of_Type = TYPE_FLOAT or else Right.V.Of_Type = TYPE_FLOAT then
return TYPE_FLOAT;
end if;
if Left.V.Of_Type = TYPE_INTEGER or else Right.V.Of_Type = TYPE_INTEGER then
return TYPE_INTEGER;
end if;
if Left.V.Of_Type = TYPE_TIME or else Right.V.Of_Type = TYPE_TIME then
return TYPE_TIME;
end if;
if Left.V.Of_Type = TYPE_BOOLEAN and then Right.V.Of_Type = TYPE_BOOLEAN then
return TYPE_BOOLEAN;
end if;
return TYPE_FLOAT;
end Get_Compose_Type;
-- ------------------------------
-- Comparison of objects
-- ------------------------------
generic
with function Int_Comparator (Left, Right : Long_Long_Integer) return Boolean;
with function Time_Comparator (Left, Right : Duration) return Boolean;
with function Boolean_Comparator (Left, Right : Boolean) return Boolean;
with function Float_Comparator (Left, Right : Long_Long_Float) return Boolean;
with function String_Comparator (Left, Right : String) return Boolean;
with function Wide_String_Comparator (Left, Right : Wide_Wide_String)
return Boolean;
function Compare (Left, Right : Object) return Boolean;
-- ------------------------------
-- Comparison of objects
-- ------------------------------
function Compare (Left, Right : Object) return Boolean is
T : constant Data_Type := Get_Compare_Type (Left, Right);
begin
case T is
when TYPE_BOOLEAN =>
return Boolean_Comparator (Left.Type_Def.To_Boolean (Left.V),
Right.Type_Def.To_Boolean (Right.V));
when TYPE_INTEGER =>
return Int_Comparator (Left.Type_Def.To_Long_Long (Left.V),
Right.Type_Def.To_Long_Long (Right.V));
when TYPE_TIME =>
return Time_Comparator (Left.Type_Def.To_Duration (Left.V),
Right.Type_Def.To_Duration (Right.V));
when TYPE_FLOAT =>
return Float_Comparator (Left.Type_Def.To_Long_Float (Left.V),
Right.Type_Def.To_Long_Float (Right.V));
when TYPE_STRING =>
return String_Comparator (To_String (Left), To_String (Right));
when TYPE_WIDE_STRING =>
return Wide_String_Comparator (To_Wide_Wide_String (Left),
To_Wide_Wide_String (Right));
when others =>
return False;
end case;
end Compare;
function ">" (Left, Right : Object) return Boolean is
function Cmp is new Compare (Int_Comparator => ">",
Time_Comparator => ">",
Boolean_Comparator => ">",
Float_Comparator => ">",
String_Comparator => ">",
Wide_String_Comparator => ">");
begin
return Cmp (Left, Right);
end ">";
function "<" (Left, Right : Object) return Boolean is
function Cmp is new Compare (Int_Comparator => "<",
Time_Comparator => "<",
Boolean_Comparator => "<",
Float_Comparator => "<",
String_Comparator => "<",
Wide_String_Comparator => "<");
begin
return Cmp (Left, Right);
end "<";
function "<=" (Left, Right : Object) return Boolean is
function Cmp is new Compare (Int_Comparator => "<=",
Time_Comparator => "<=",
Boolean_Comparator => "<=",
Float_Comparator => "<=",
String_Comparator => "<=",
Wide_String_Comparator => "<=");
begin
return Cmp (Left, Right);
end "<=";
function ">=" (Left, Right : Object) return Boolean is
function Cmp is new Compare (Int_Comparator => ">=",
Time_Comparator => ">=",
Boolean_Comparator => ">=",
Float_Comparator => ">=",
String_Comparator => ">=",
Wide_String_Comparator => ">=");
begin
return Cmp (Left, Right);
end ">=";
overriding
function "=" (Left, Right : Object) return Boolean is
function Cmp is new Compare (Int_Comparator => "=",
Time_Comparator => "=",
Boolean_Comparator => "=",
Float_Comparator => "=",
String_Comparator => "=",
Wide_String_Comparator => "=");
begin
return Cmp (Left, Right);
end "=";
-- ------------------------------
-- Arithmetic operations of objects
-- ------------------------------
generic
with function Int_Operation (Left, Right : Long_Long_Integer)
return Long_Long_Integer;
with function Duration_Operation (Left, Right : Duration)
return Duration;
with function Float_Operation (Left, Right : Long_Long_Float)
return Long_Long_Float;
function Arith (Left, Right : Object) return Object;
-- Comparison of objects
function Arith (Left, Right : Object) return Object is
begin
-- If we have a time object, keep the time definition.
if Left.V.Of_Type = TYPE_TIME then
return Result : Object do
Result.Type_Def := Left.Type_Def;
Result.V := Object_Value
'(Of_Type => TYPE_TIME,
Time_Value => Duration_Operation
(Left.Type_Def.To_Duration (Left.V),
Right.Type_Def.To_Duration (Right.V)));
end return;
end if;
if Right.V.Of_Type = TYPE_TIME then
return Result : Object do
Result.Type_Def := Right.Type_Def;
Result.V := Object_Value
'(Of_Type => TYPE_TIME,
Time_Value => Duration_Operation (Left.Type_Def.To_Duration (Left.V),
Right.Type_Def.To_Duration (Right.V)));
end return;
end if;
declare
T : constant Data_Type := Get_Arithmetic_Type (Left, Right);
begin
case T is
when TYPE_INTEGER =>
return To_Object (Int_Operation (Left.Type_Def.To_Long_Long (Left.V),
Right.Type_Def.To_Long_Long (Right.V)));
when TYPE_FLOAT =>
return To_Object (Float_Operation (Left.Type_Def.To_Long_Float (Left.V),
Right.Type_Def.To_Long_Float (Right.V)));
when others =>
return Left;
end case;
end;
end Arith;
-- Arithmetic operations on objects
function "+" (Left, Right : Object) return Object is
function Operation is new Arith (Int_Operation => "+",
Duration_Operation => "+",
Float_Operation => "+");
begin
return Operation (Left, Right);
end "+";
function "-" (Left, Right : Object) return Object is
function Operation is new Arith (Int_Operation => "-",
Duration_Operation => "-",
Float_Operation => "-");
begin
return Operation (Left, Right);
end "-";
function "-" (Left : Object) return Object is
begin
case Left.V.Of_Type is
when TYPE_INTEGER =>
return To_Object (-Left.Type_Def.To_Long_Long (Left.V));
when TYPE_TIME =>
return To_Object (-Left.Type_Def.To_Duration (Left.V));
when TYPE_FLOAT =>
return To_Object (-(Left.Type_Def.To_Long_Float (Left.V)));
when others =>
return Left;
end case;
end "-";
function "*" (Left, Right : Object) return Object is
function Operation is new Arith (Int_Operation => "*",
Duration_Operation => "+",
Float_Operation => "*");
begin
return Operation (Left, Right);
end "*";
function "/" (Left, Right : Object) return Object is
function Operation is new Arith (Int_Operation => "/",
Duration_Operation => "-",
Float_Operation => "/");
begin
return Operation (Left, Right);
end "/";
function "mod" (Left, Right : Object) return Object is
function "mod" (Left, Right : Long_Long_Float) return Long_Long_Float;
function "mod" (Left, Right : Long_Long_Float) return Long_Long_Float is
L : constant Long_Long_Integer := Long_Long_Integer (Left);
R : constant Long_Long_Integer := Long_Long_Integer (Right);
begin
return Long_Long_Float (L mod R);
end "mod";
function Operation is new Arith (Int_Operation => "mod",
Duration_Operation => "-",
Float_Operation => "mod");
begin
return Operation (Left, Right);
end "mod";
function "&" (Left, Right : Object) return Object is
T : constant Data_Type := Get_Compose_Type (Left, Right);
begin
case T is
when TYPE_BOOLEAN =>
return To_Object (To_Boolean (Left) and then To_Boolean (Right));
when others =>
return To_Object (To_String (Left) & To_String (Right));
end case;
end "&";
overriding
procedure Adjust (Obj : in out Object) is
begin
case Obj.V.Of_Type is
when TYPE_BEAN =>
if Obj.V.Proxy /= null then
Util.Concurrent.Counters.Increment (Obj.V.Proxy.Ref_Counter);
end if;
when TYPE_ARRAY =>
if Obj.V.Array_Proxy /= null then
Util.Concurrent.Counters.Increment (Obj.V.Array_Proxy.Ref_Counter);
end if;
when TYPE_STRING =>
if Obj.V.String_Proxy /= null then
Util.Concurrent.Counters.Increment (Obj.V.String_Proxy.Ref_Counter);
end if;
when TYPE_WIDE_STRING =>
if Obj.V.Wide_Proxy /= null then
Util.Concurrent.Counters.Increment (Obj.V.Wide_Proxy.Ref_Counter);
end if;
when TYPE_BLOB =>
if Obj.V.Blob_Proxy /= null then
Util.Concurrent.Counters.Increment (Obj.V.Blob_Proxy.Ref_Counter);
end if;
when others =>
null;
end case;
end Adjust;
procedure Free is
new Ada.Unchecked_Deallocation (Object => Basic.Readonly_Bean'Class,
Name => Basic.Readonly_Bean_Access);
procedure Free is
new Ada.Unchecked_Deallocation (Object => Array_Proxy,
Name => Array_Proxy_Access);
procedure Free is
new Ada.Unchecked_Deallocation (Object => String_Proxy,
Name => String_Proxy_Access);
procedure Free is
new Ada.Unchecked_Deallocation (Object => Wide_String_Proxy,
Name => Wide_String_Proxy_Access);
procedure Free is
new Ada.Unchecked_Deallocation (Object => Blob_Proxy,
Name => Blob_Proxy_Access);
overriding
procedure Finalize (Obj : in out Object) is
Release : Boolean;
begin
case Obj.V.Of_Type is
when TYPE_STRING =>
if Obj.V.String_Proxy /= null then
Util.Concurrent.Counters.Decrement (Obj.V.String_Proxy.Ref_Counter, Release);
if Release then
Free (Obj.V.String_Proxy);
else
Obj.V.String_Proxy := null;
end if;
end if;
when TYPE_WIDE_STRING =>
if Obj.V.Wide_Proxy /= null then
Util.Concurrent.Counters.Decrement (Obj.V.Wide_Proxy.Ref_Counter, Release);
if Release then
Free (Obj.V.Wide_Proxy);
else
Obj.V.Wide_Proxy := null;
end if;
end if;
when TYPE_BEAN =>
if Obj.V.Proxy /= null then
Util.Concurrent.Counters.Decrement (Obj.V.Proxy.Ref_Counter, Release);
if Release then
Obj.V.Proxy.all.Release;
Free (Obj.V.Proxy);
else
Obj.V.Proxy := null;
end if;
end if;
when TYPE_ARRAY =>
if Obj.V.Array_Proxy /= null then
Util.Concurrent.Counters.Decrement (Obj.V.Array_Proxy.Ref_Counter, Release);
if Release then
Free (Obj.V.Array_Proxy);
else
Obj.V.Array_Proxy := null;
end if;
end if;
when TYPE_BLOB =>
if Obj.V.Blob_Proxy /= null then
Util.Concurrent.Counters.Decrement (Obj.V.Blob_Proxy.Ref_Counter, Release);
if Release then
Free (Obj.V.Blob_Proxy);
else
Obj.V.Blob_Proxy := null;
end if;
end if;
when others =>
null;
end case;
end Finalize;
-- ------------------------------
-- Release the object pointed to by the proxy (if necessary).
-- ------------------------------
overriding
procedure Release (P : in out Bean_Proxy) is
begin
if P.Storage = DYNAMIC and then P.Bean /= null then
declare
Bean : Basic.Readonly_Bean_Access := P.Bean.all'Access;
begin
P.Bean := null;
Free (Bean);
end;
end if;
end Release;
overriding
procedure Finalize (Proxy : in out Proxy_Iterator) is
Release : Boolean;
begin
if Proxy.Proxy /= null then
Util.Concurrent.Counters.Decrement (Proxy.Proxy.Ref_Counter, Release);
if Release then
Free (Proxy.Proxy);
else
Proxy.Proxy := null;
end if;
end if;
end Finalize;
end Util.Beans.Objects;
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