[gcc r13-1433] [Ada] Add Ada 2022 Key function to sets containers

[gcc r13-1433] [Ada] Add Ada 2022 Key function to sets containers

[Pierre-Marie de Rodat]

https://gcc.gnu.org/g:eb6e8a7acd1b8ecf36489e01cafad61add528f23

commit r13-1433-geb6e8a7acd1b8ecf36489e01cafad61add528f23
Author: Bob Duff <duff@adacore.com>
Date:   Tue May 24 13:03:21 2022 -0400

    [Ada] Add Ada 2022 Key function to sets containers
    
    This patch adds the new Generic_Keys.Key function to the set children
    of Ada.Containers.
    
    gcc/ada/
    
            * libgnat/a-cbhase.ads, libgnat/a-cborse.ads,
            libgnat/a-cihase.ads, libgnat/a-ciorse.ads,
            libgnat/a-cohase.ads, libgnat/a-coorse.ads (Key): New function
            that takes a Container parameter, implemented as an expression
            function, so it is self explanatory (doesn't need a comment).

Diff:
---
 gcc/ada/libgnat/a-cbhase.ads | 3 +++
 gcc/ada/libgnat/a-cborse.ads | 3 +++
 gcc/ada/libgnat/a-cihase.ads | 3 +++
 gcc/ada/libgnat/a-ciorse.ads | 3 +++
 gcc/ada/libgnat/a-cohase.ads | 3 +++
 gcc/ada/libgnat/a-coorse.ads | 3 +++
 6 files changed, 18 insertions(+)

diff --git a/gcc/ada/libgnat/a-cbhase.ads b/gcc/ada/libgnat/a-cbhase.ads
index 7079c517418..351014d302f 100644
--- a/gcc/ada/libgnat/a-cbhase.ads
+++ b/gcc/ada/libgnat/a-cbhase.ads
@@ -403,6 +403,9 @@ is
       --  Applies generic formal operation Key to the element of the node
       --  designated by Position.
 
+      function Key (Container : Set; Position : Cursor) return Key_Type is
+        (Key (Element (Container, Position)));
+
       function Element (Container : Set; Key : Key_Type) return Element_Type;
       --  Searches (as per the key-based Find) for the node containing Key, and
       --  returns the associated element.
diff --git a/gcc/ada/libgnat/a-cborse.ads b/gcc/ada/libgnat/a-cborse.ads
index be22c250714..53acf355a62 100644
--- a/gcc/ada/libgnat/a-cborse.ads
+++ b/gcc/ada/libgnat/a-cborse.ads
@@ -262,6 +262,9 @@ is
 
       function Key (Position : Cursor) return Key_Type;
 
+      function Key (Container : Set; Position : Cursor) return Key_Type is
+        (Key (Element (Container, Position)));
+
       function Element (Container : Set; Key : Key_Type) return Element_Type;
 
       procedure Replace
diff --git a/gcc/ada/libgnat/a-cihase.ads b/gcc/ada/libgnat/a-cihase.ads
index dcd1d6a86fa..2bb452729fd 100644
--- a/gcc/ada/libgnat/a-cihase.ads
+++ b/gcc/ada/libgnat/a-cihase.ads
@@ -389,6 +389,9 @@ is
       --  Applies generic formal operation Key to the element of the node
       --  designated by Position.
 
+      function Key (Container : Set; Position : Cursor) return Key_Type is
+        (Key (Element (Container, Position)));
+
       function Element (Container : Set; Key : Key_Type) return Element_Type;
       --  Searches (as per the key-based Find) for the node containing Key, and
       --  returns the associated element.
diff --git a/gcc/ada/libgnat/a-ciorse.ads b/gcc/ada/libgnat/a-ciorse.ads
index d053ac72649..51545d62e99 100644
--- a/gcc/ada/libgnat/a-ciorse.ads
+++ b/gcc/ada/libgnat/a-ciorse.ads
@@ -270,6 +270,9 @@ is
 
       function Key (Position : Cursor) return Key_Type;
 
+      function Key (Container : Set; Position : Cursor) return Key_Type is
+        (Key (Element (Container, Position)));
+
       function Element (Container : Set; Key : Key_Type) return Element_Type;
 
       procedure Replace
diff --git a/gcc/ada/libgnat/a-cohase.ads b/gcc/ada/libgnat/a-cohase.ads
index 9f562d899b9..fb7dccaf931 100644
--- a/gcc/ada/libgnat/a-cohase.ads
+++ b/gcc/ada/libgnat/a-cohase.ads
@@ -401,6 +401,9 @@ is
       --  Applies generic formal operation Key to the element of the node
       --  designated by Position.
 
+      function Key (Container : Set; Position : Cursor) return Key_Type is
+        (Key (Element (Container, Position)));
+
       function Element (Container : Set; Key : Key_Type) return Element_Type;
       --  Searches (as per the key-based Find) for the node containing Key, and
       --  returns the associated element.
diff --git a/gcc/ada/libgnat/a-coorse.ads b/gcc/ada/libgnat/a-coorse.ads
index 9619599a5b7..7596ed698f5 100644
--- a/gcc/ada/libgnat/a-coorse.ads
+++ b/gcc/ada/libgnat/a-coorse.ads
@@ -263,6 +263,9 @@ is
 
       function Key (Position : Cursor) return Key_Type;
 
+      function Key (Container : Set; Position : Cursor) return Key_Type is
+        (Key (Element (Container, Position)));
+
       function Element (Container : Set; Key : Key_Type) return Element_Type;
 
       procedure Replace