1------------------------------------------------------------------------------
2--                                                                          --
3--                            Matreshka Project                             --
4--                                                                          --
5--                          Ada Modeling Framework                          --
6--                                                                          --
7--                        Runtime Library Component                         --
8--                                                                          --
9------------------------------------------------------------------------------
10--                                                                          --
11-- Copyright © 2011, Vadim Godunko <vgodunko@gmail.com>                     --
12-- All rights reserved.                                                     --
13--                                                                          --
14-- Redistribution and use in source and binary forms, with or without       --
15-- modification, are permitted provided that the following conditions       --
16-- are met:                                                                 --
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18--  * Redistributions of source code must retain the above copyright        --
19--    notice, this list of conditions and the following disclaimer.         --
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21--  * Redistributions in binary form must reproduce the above copyright     --
22--    notice, this list of conditions and the following disclaimer in the   --
23--    documentation and/or other materials provided with the distribution.  --
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25--  * Neither the name of the Vadim Godunko, IE nor the names of its        --
26--    contributors may be used to endorse or promote products derived from  --
27--    this software without specific prior written permission.              --
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40--                                                                          --
41------------------------------------------------------------------------------
42--  $Revision: 2868 $ $Date: 2012-04-14 11:38:20 +0400 (Sat, 14 Apr 2012) $
43------------------------------------------------------------------------------
44with AMF.Internals.UML_Packageable_Elements;
45with AMF.UML.Value_Specifications;
46
47package AMF.Internals.UML_Value_Specifications is
48
49   type UML_Value_Specification_Proxy is
50     abstract limited new AMF.Internals.UML_Packageable_Elements.UML_Packageable_Element_Proxy
51       and AMF.UML.Value_Specifications.UML_Value_Specification with null record;
52
53   overriding function Boolean_Value
54    (Self : not null access constant UML_Value_Specification_Proxy)
55       return AMF.Optional_Boolean;
56   --  Operation ValueSpecification::booleanValue.
57   --
58   --  The query booleanValue() gives a single Boolean value when one can be
59   --  computed.
60
61   overriding function Integer_Value
62    (Self : not null access constant UML_Value_Specification_Proxy)
63       return AMF.Optional_Integer;
64   --  Operation ValueSpecification::integerValue.
65   --
66   --  The query integerValue() gives a single Integer value when one can be
67   --  computed.
68
69   overriding function Is_Computable
70    (Self : not null access constant UML_Value_Specification_Proxy)
71       return Boolean;
72   --  Operation ValueSpecification::isComputable.
73   --
74   --  The query isComputable() determines whether a value specification can
75   --  be computed in a model. This operation cannot be fully defined in OCL.
76   --  A conforming implementation is expected to deliver true for this
77   --  operation for all value specifications that it can compute, and to
78   --  compute all of those for which the operation is true. A conforming
79   --  implementation is expected to be able to compute the value of all
80   --  literals.
81
82   overriding function Is_Null
83    (Self : not null access constant UML_Value_Specification_Proxy)
84       return Boolean;
85   --  Operation ValueSpecification::isNull.
86   --
87   --  The query isNull() returns true when it can be computed that the value
88   --  is null.
89
90   overriding function Real_Value
91    (Self : not null access constant UML_Value_Specification_Proxy)
92       return AMF.Optional_Real;
93   --  Operation ValueSpecification::realValue.
94   --
95   --  The query realValue() gives a single Real value when one can be
96   --  computed.
97
98   overriding function String_Value
99    (Self : not null access constant UML_Value_Specification_Proxy)
100       return AMF.Optional_String;
101   --  Operation ValueSpecification::stringValue.
102   --
103   --  The query stringValue() gives a single String value when one can be
104   --  computed.
105
106   overriding function Unlimited_Value
107    (Self : not null access constant UML_Value_Specification_Proxy)
108       return AMF.Optional_Unlimited_Natural;
109   --  Operation ValueSpecification::unlimitedValue.
110   --
111   --  The query unlimitedValue() gives a single UnlimitedNatural value when
112   --  one can be computed.
113
114end AMF.Internals.UML_Value_Specifications;
115