1 ------------------------------------------------------------------------------
3 -- GNAT LIBRARY COMPONENTS --
5 -- ADA.CONTAINERS.FUNCTIONAL_MAPS --
9 -- Copyright (C) 2016-2020, Free Software Foundation, Inc. --
11 -- This specification is derived from the Ada Reference Manual for use with --
12 -- GNAT. The copyright notice above, and the license provisions that follow --
13 -- apply solely to the contents of the part following the private keyword. --
15 -- GNAT is free software; you can redistribute it and/or modify it under --
16 -- terms of the GNU General Public License as published by the Free Soft- --
17 -- ware Foundation; either version 3, or (at your option) any later ver- --
18 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
19 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
20 -- or FITNESS FOR A PARTICULAR PURPOSE. --
22 -- As a special exception under Section 7 of GPL version 3, you are granted --
23 -- additional permissions described in the GCC Runtime Library Exception, --
24 -- version 3.1, as published by the Free Software Foundation. --
26 -- You should have received a copy of the GNU General Public License and --
27 -- a copy of the GCC Runtime Library Exception along with this program; --
28 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
29 -- <http://www.gnu.org/licenses/>. --
30 ------------------------------------------------------------------------------
33 package body Ada.Containers.Functional_Maps with SPARK_Mode => Off is
35 use Element_Containers;
41 function "=" (Left : Map; Right : Map) return Boolean is
42 (Left.Keys <= Right.Keys and Right <= Left);
48 function "<=" (Left : Map; Right : Map) return Boolean is
52 for I1 in 1 .. Length (Left.Keys) loop
53 I2 := Find (Right.Keys, Get (Left.Keys, I1));
55 or else Get (Right.Elements, I2) /= Get (Left.Elements, I1)
70 New_Item : Element_Type) return Map
75 Add (Container.Keys, Length (Container.Keys) + 1, New_Key),
78 (Container.Elements, Length (Container.Elements) + 1, New_Item));
81 ---------------------------
82 -- Elements_Equal_Except --
83 ---------------------------
85 function Elements_Equal_Except
88 New_Key : Key_Type) return Boolean
91 for J in 1 .. Length (Left.Keys) loop
93 K : constant Key_Type := Get (Left.Keys, J);
95 if not Equivalent_Keys (K, New_Key)
97 (Find (Right.Keys, K) = 0
98 or else Get (Right.Elements, Find (Right.Keys, K)) /=
99 Get (Left.Elements, J))
106 end Elements_Equal_Except;
108 function Elements_Equal_Except
112 Y : Key_Type) return Boolean
115 for J in 1 .. Length (Left.Keys) loop
117 K : constant Key_Type := Get (Left.Keys, J);
119 if not Equivalent_Keys (K, X)
120 and then not Equivalent_Keys (K, Y)
122 (Find (Right.Keys, K) = 0
123 or else Get (Right.Elements, Find (Right.Keys, K)) /=
124 Get (Left.Elements, J))
131 end Elements_Equal_Except;
137 function Get (Container : Map; Key : Key_Type) return Element_Type is
139 return Get (Container.Elements, Find (Container.Keys, Key));
146 function Has_Key (Container : Map; Key : Key_Type) return Boolean is
148 return Find (Container.Keys, Key) > 0;
157 Witness : Count_Type) return Boolean
159 (Witness in 1 .. Length (Container.Keys));
165 function Is_Empty (Container : Map) return Boolean is
167 return Length (Container.Keys) = 0;
174 function Keys_Included (Left : Map; Right : Map) return Boolean is
176 for J in 1 .. Length (Left.Keys) loop
178 K : constant Key_Type := Get (Left.Keys, J);
180 if Find (Right.Keys, K) = 0 then
189 --------------------------
190 -- Keys_Included_Except --
191 --------------------------
193 function Keys_Included_Except
196 New_Key : Key_Type) return Boolean
199 for J in 1 .. Length (Left.Keys) loop
201 K : constant Key_Type := Get (Left.Keys, J);
203 if not Equivalent_Keys (K, New_Key)
204 and then Find (Right.Keys, K) = 0
212 end Keys_Included_Except;
214 function Keys_Included_Except
218 Y : Key_Type) return Boolean
221 for J in 1 .. Length (Left.Keys) loop
223 K : constant Key_Type := Get (Left.Keys, J);
225 if not Equivalent_Keys (K, X)
226 and then not Equivalent_Keys (K, Y)
227 and then Find (Right.Keys, K) = 0
235 end Keys_Included_Except;
241 function Length (Container : Map) return Count_Type is
243 return Length (Container.Elements);
250 function Remove (Container : Map; Key : Key_Type) return Map is
251 J : constant Extended_Index := Find (Container.Keys, Key);
254 (Keys => Remove (Container.Keys, J),
255 Elements => Remove (Container.Elements, J));
262 function Same_Keys (Left : Map; Right : Map) return Boolean is
263 (Keys_Included (Left, Right)
264 and Keys_Included (Left => Right, Right => Left));
273 New_Item : Element_Type) return Map
275 (Keys => Container.Keys,
277 Set (Container.Elements, Find (Container.Keys, Key), New_Item));
285 Witness : Count_Type) return Element_Type
287 (Get (Container.Elements, Witness));
293 function Witness (Container : Map; Key : Key_Type) return Count_Type is
294 (Find (Container.Keys, Key));
296 end Ada.Containers.Functional_Maps;