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174 | ------------------------------------------------------------------------------
-- --
-- Matreshka Project --
-- --
-- Web Framework --
-- --
-- Tools Component --
-- --
------------------------------------------------------------------------------
-- --
-- Copyright © 2015, Vadim Godunko <vgodunko@gmail.com> --
-- All rights reserved. --
-- --
-- Redistribution and use in source and binary forms, with or without --
-- modification, are permitted provided that the following conditions --
-- are met: --
-- --
-- * Redistributions of source code must retain the above copyright --
-- notice, this list of conditions and the following disclaimer. --
-- --
-- * Redistributions in binary form must reproduce the above copyright --
-- notice, this list of conditions and the following disclaimer in the --
-- documentation and/or other materials provided with the distribution. --
-- --
-- * Neither the name of the Vadim Godunko, IE nor the names of its --
-- contributors may be used to endorse or promote products derived from --
-- this software without specific prior written permission. --
-- --
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS --
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT --
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR --
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT --
-- HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, --
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED --
-- TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR --
-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF --
-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING --
-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS --
-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --
-- --
------------------------------------------------------------------------------
-- $Revision: 5498 $ $Date: 2015-10-20 18:17:05 +0300 (Вт, 20 окт 2015) $
------------------------------------------------------------------------------
with Ada.Wide_Text_IO;
with Asis.Elements;
package body Engines.Generic_Engines is
---------
-- "=" --
---------
overriding function "=" (Left, Right : Property_Key) return Boolean is
begin
return Asis.Elements.Is_Identical (Left.Element, Right.Element) and then
Left.Name = Right.Name;
end "=";
------------------
-- Get_Property --
------------------
function Get_Property
(Self : access Engine;
Element : Asis.Element;
Name : Propert_Name)
return Property_Type
is
Key : constant Property_Key := (Element, Name);
Pos : constant Property_Maps.Cursor := Self.Property_Cache.Find (Key);
Value : Property_Type;
Action : Action_Callback;
begin
if Property_Maps.Has_Element (Pos) then
Value := Property_Maps.Element (Pos);
else
declare
Kind : constant Asis.Extensions.Flat_Kinds.Flat_Element_Kinds :=
Asis.Extensions.Flat_Kinds.Flat_Element_Kind (Element);
begin
Action := Self.Actions.Element ((Kind, Name));
exception
when Constraint_Error =>
Ada.Wide_Text_IO.Put
(Asis.Extensions.Flat_Kinds.Flat_Element_Kinds'Wide_Image
(Kind));
Ada.Wide_Text_IO.Put (" ");
Ada.Wide_Text_IO.Put_Line (Propert_Name'Wide_Image (Name));
Ada.Wide_Text_IO.Put_Line (Asis.Elements.Debug_Image (Element));
raise;
end;
Value := Action (Self.Context, Element, Name);
Self.Property_Cache.Insert (Key, Value);
end if;
return Value;
end Get_Property;
------------------
-- Get_Property --
------------------
function Get_Property
(Self : access Engine;
List : Asis.Element_List;
Name : Propert_Name;
Empty : Property_Type;
Sum : access
function (Left, Right : Property_Type) return Property_Type)
return Property_Type
is
Result : Property_Type := Empty;
begin
for J in List'Range loop
declare
Next : constant Property_Type :=
Self.Get_Property (List (J), Name);
begin
Result := Sum (Result, Next);
end;
end loop;
return Result;
end Get_Property;
----------
-- Hash --
----------
function Hash (Value : Property_Key) return Ada.Containers.Hash_Type is
use type Ada.Containers.Hash_Type;
Element_Hash : constant Asis.ASIS_Integer :=
Asis.Elements.Hash (Value.Element);
Name_Hash : constant Ada.Containers.Hash_Type :=
Propert_Name'Pos (Value.Name);
begin
return Name_Hash + Ada.Containers.Hash_Type (abs Element_Hash);
end Hash;
----------
-- Hash --
----------
function Hash (Value : Action_Key) return Ada.Containers.Hash_Type is
use type Ada.Containers.Hash_Type;
Kind_Hash : constant Ada.Containers.Hash_Type :=
Asis.Extensions.Flat_Kinds.Flat_Element_Kinds'Pos (Value.Kind);
Name_Hash : constant Ada.Containers.Hash_Type :=
Propert_Name'Pos (Value.Name);
begin
return Name_Hash + Kind_Hash;
end Hash;
-------------------------
-- Register_Calculator --
-------------------------
procedure Register_Calculator
(Self : in out Engine;
Kind : Asis.Extensions.Flat_Kinds.Flat_Element_Kinds;
Name : Propert_Name;
Action : access function
(Engine : access Abstract_Context;
Element : Asis.Element;
Name : Propert_Name) return Property_Type) is
begin
Self.Actions.Insert ((Kind, Name), Action);
end Register_Calculator;
end Engines.Generic_Engines;
|