1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
10 -- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 2, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNAT; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
21 -- MA 02111-1307, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNAT was originally developed by the GNAT team at New York University. --
31 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
33 ------------------------------------------------------------------------------
35 with Csets; use Csets;
36 with Namet; use Namet;
38 with Types; use Types;
39 with Widechar; use Widechar;
41 package body Casing is
43 ----------------------
44 -- Determine_Casing --
45 ----------------------
47 function Determine_Casing (Ident : Text_Buffer) return Casing_Type is
49 All_Lower : Boolean := True;
50 -- Set False if upper case letter found
52 All_Upper : Boolean := True;
53 -- Set False if lower case letter found
55 Mixed : Boolean := True;
56 -- Set False if exception to mixed case rule found (lower case letter
57 -- at start or after underline, or upper case letter elsewhere).
59 Decisive : Boolean := False;
60 -- Set True if at least one instance of letter not after underline
62 After_Und : Boolean := True;
63 -- True at start of string, and after an underline character
66 for S in Ident'Range loop
67 if Ident (S) = '_' or else Ident (S) = '.' then
70 elsif Is_Lower_Case_Letter (Ident (S)) then
80 elsif Is_Upper_Case_Letter (Ident (S)) then
92 -- Now we can figure out the result from the flags we set in that loop
95 return All_Lower_Case;
97 elsif not Decisive then
101 return All_Upper_Case;
109 end Determine_Casing;
111 ------------------------
112 -- Set_All_Upper_Case --
113 ------------------------
115 procedure Set_All_Upper_Case is
117 Set_Casing (All_Upper_Case);
118 end Set_All_Upper_Case;
124 procedure Set_Casing (C : Casing_Type; D : Casing_Type := Mixed_Case) is
127 Actual_Casing : Casing_Type;
128 -- Set from C or D as appropriate
130 After_Und : Boolean := True;
131 -- True at start of string, and after an underline character or after
132 -- any other special character that is not a normal identifier char).
143 while Ptr <= Name_Len loop
144 if Name_Buffer (Ptr) = ASCII.ESC
145 or else Name_Buffer (Ptr) = '['
146 or else (Upper_Half_Encoding
147 and then Name_Buffer (Ptr) in Upper_Half_Character)
149 Skip_Wide (Name_Buffer, Ptr);
152 elsif Name_Buffer (Ptr) = '_'
153 or else not Identifier_Char (Name_Buffer (Ptr))
158 elsif Is_Lower_Case_Letter (Name_Buffer (Ptr)) then
159 if Actual_Casing = All_Upper_Case
160 or else (After_Und and then Actual_Casing = Mixed_Case)
162 Name_Buffer (Ptr) := Fold_Upper (Name_Buffer (Ptr));
168 elsif Is_Upper_Case_Letter (Name_Buffer (Ptr)) then
169 if Actual_Casing = All_Lower_Case
170 or else (not After_Und and then Actual_Casing = Mixed_Case)
172 Name_Buffer (Ptr) := Fold_Lower (Name_Buffer (Ptr));
178 else -- all other characters