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+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- C A S I N G --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 1992-2000 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- --
+-- ware Foundation; either version 2, or (at your option) any later ver- --
+-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
+-- for more details. You should have received a copy of the GNU General --
+-- Public License distributed with GNAT; see file COPYING. If not, write --
+-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, USA. --
+-- --
+-- As a special exception, if other files instantiate generics from this --
+-- unit, or you link this unit with other files to produce an executable, --
+-- this unit does not by itself cause the resulting executable to be --
+-- covered by the GNU General Public License. This exception does not --
+-- however invalidate any other reasons why the executable file might be --
+-- covered by the GNU Public License. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+with Types; use Types;
+
+package Casing is
+
+ -- This package contains data and subprograms to support the feature that
+ -- recognizes the letter case styles used in the source program being
+ -- compiled, and uses this information for error message formatting, and
+ -- for recognizing reserved words that are misused as identifiers.
+
+ -------------------------------
+ -- Case Control Declarations --
+ -------------------------------
+
+ -- Declaration of type for describing casing convention
+
+ type Casing_Type is (
+
+ All_Upper_Case,
+ -- All letters are upper case
+
+ All_Lower_Case,
+ -- All letters are lower case
+
+ Mixed_Case,
+ -- The initial letter, and any letters after underlines are upper case.
+ -- All other letters are lower case
+
+ Unknown
+ -- Used if an identifier does not distinguish between the above cases,
+ -- (e.g. X, Y_3, M4, A_B, or if it is inconsistent ABC_def).
+ );
+
+ ------------------------------
+ -- Case Control Subprograms --
+ ------------------------------
+
+ procedure Set_Casing (C : Casing_Type; D : Casing_Type := Mixed_Case);
+ -- Takes the name stored in the first Name_Len positions of Name_Buffer
+ -- and modifies it to be consistent with the casing given by C, or if
+ -- C = Unknown, then with the casing given by D. The name is basically
+ -- treated as an identifier, except that special separator characters
+ -- other than underline are permitted and treated like underlines (this
+ -- handles cases like minus and period in unit names, apostrophes in error
+ -- messages, angle brackets in names like <any_type>, etc).
+
+ procedure Set_All_Upper_Case;
+ pragma Inline (Set_All_Upper_Case);
+ -- This procedure is called with an identifier name stored in Name_Buffer.
+ -- On return, the identifier is converted to all upper case. The call is
+ -- equivalent to Set_Casing (All_Upper_Case).
+
+ function Determine_Casing (Ident : Text_Buffer) return Casing_Type;
+ -- Determines the casing of the identifier/keyword string Ident
+
+end Casing;