diff options
| -rw-r--r-- | gcc/ada/mutably_tagged.ads | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/gcc/ada/mutably_tagged.ads b/gcc/ada/mutably_tagged.ads index b1e393f..6b3b10d 100644 --- a/gcc/ada/mutably_tagged.ads +++ b/gcc/ada/mutably_tagged.ads @@ -6,7 +6,7 @@ -- -- -- S p e c -- -- -- --- Copyright (C) 2024-2024, Free Software Foundation, Inc. -- +-- Copyright (C) 2024, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- @@ -36,8 +36,8 @@ package Mutably_Tagged is -- This package implements mutably tagged types via the Size'class aspect -- which enables the creation of class-wide types with a specific maximum -- size. This allows such types to be used directly in record components, - -- in object declarations without an initial expression, and to be - -- assigned a value from any type in a mutably tagged type's hierarchy. + -- in object declarations without an initial expression, and to be assigned + -- a value from any type in a mutably tagged type's hierarchy. -- For example, this structure allows Base_Type and its derivatives to be -- treated as components with a predictable size: @@ -49,17 +49,16 @@ package Mutably_Tagged is -- Component : Base_Type'Class; -- end record; - -- The core of thier implementation involve creating an "equivalent" type + -- The core of their implementation involves creating an "equivalent" type -- for each class-wide type that adheres to the Size'Class constraint. This - -- is achieved using the function Make_CW_Equivalent_Type, which - -- generates a type that is compatible in size and structure with any + -- is achieved by using the function Make_CW_Equivalent_Type from Exp_Util, + -- which generates a type that is compatible in size and structure with any -- derived type of the base class-wide type. - -- Once the class-wide equivalent type is generated, all references to - -- mutably tagged typed object declarations get rewritten to be - -- declarations of said equivalent type. References to these objects also - -- then get wrapped in unchecked conversions to the proper mutably tagged - -- class-wide type. + -- Once the class-wide equivalent type is generated, all declarations of + -- mutably tagged typed objects get rewritten as declarations of objects + -- with the equivalent type. References to these objects also then get + -- wrapped in unchecked conversions to the mutably tagged class-wide type. function Corresponding_Mutably_Tagged_Type (CW_Equiv_Typ : Entity_Id) return Entity_Id; |