1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
11 -- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- As a special exception, if other files instantiate generics from this --
25 -- unit, or you link this unit with other files to produce an executable, --
26 -- this unit does not by itself cause the resulting executable to be --
27 -- covered by the GNU General Public License. This exception does not --
28 -- however invalidate any other reasons why the executable file might be --
29 -- covered by the GNU Public License. --
31 -- GNAT was originally developed by the GNAT team at New York University. --
32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
34 ------------------------------------------------------------------------------
36 with Csets; use Csets;
37 with Namet; use Namet;
39 with Types; use Types;
40 with Widechar; use Widechar;
42 package body Casing is
44 ----------------------
45 -- Determine_Casing --
46 ----------------------
48 function Determine_Casing (Ident : Text_Buffer) return Casing_Type is
50 All_Lower : Boolean := True;
51 -- Set False if upper case letter found
53 All_Upper : Boolean := True;
54 -- Set False if lower case letter found
56 Mixed : Boolean := True;
57 -- Set False if exception to mixed case rule found (lower case letter
58 -- at start or after underline, or upper case letter elsewhere).
60 Decisive : Boolean := False;
61 -- Set True if at least one instance of letter not after underline
63 After_Und : Boolean := True;
64 -- True at start of string, and after an underline character
67 for S in Ident'Range loop
68 if Ident (S) = '_' or else Ident (S) = '.' then
71 elsif Is_Lower_Case_Letter (Ident (S)) then
81 elsif Is_Upper_Case_Letter (Ident (S)) then
93 -- Now we can figure out the result from the flags we set in that loop
96 return All_Lower_Case;
98 elsif not Decisive then
102 return All_Upper_Case;
110 end Determine_Casing;
112 ------------------------
113 -- Set_All_Upper_Case --
114 ------------------------
116 procedure Set_All_Upper_Case is
118 Set_Casing (All_Upper_Case);
119 end Set_All_Upper_Case;
125 procedure Set_Casing (C : Casing_Type; D : Casing_Type := Mixed_Case) is
128 Actual_Casing : Casing_Type;
129 -- Set from C or D as appropriate
131 After_Und : Boolean := True;
132 -- True at start of string, and after an underline character or after
133 -- any other special character that is not a normal identifier char).
144 while Ptr <= Name_Len loop
145 if Name_Buffer (Ptr) = ASCII.ESC
146 or else Name_Buffer (Ptr) = '['
147 or else (Upper_Half_Encoding
148 and then Name_Buffer (Ptr) in Upper_Half_Character)
150 Skip_Wide (Name_Buffer, Ptr);
153 elsif Name_Buffer (Ptr) = '_'
154 or else not Identifier_Char (Name_Buffer (Ptr))
159 elsif Is_Lower_Case_Letter (Name_Buffer (Ptr)) then
160 if Actual_Casing = All_Upper_Case
161 or else (After_Und and then Actual_Casing = Mixed_Case)
163 Name_Buffer (Ptr) := Fold_Upper (Name_Buffer (Ptr));
169 elsif Is_Upper_Case_Letter (Name_Buffer (Ptr)) then
170 if Actual_Casing = All_Lower_Case
171 or else (not After_Und and then Actual_Casing = Mixed_Case)
173 Name_Buffer (Ptr) := Fold_Lower (Name_Buffer (Ptr));
179 else -- all other characters