1 ------------------------------------------------------------------------------
3 -- GNAT RUNTIME COMPONENTS --
5 -- A D A . T E X T _ I O . E N U M E R A T I O N _ A U X --
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 Ada.Text_IO.Generic_Aux; use Ada.Text_IO.Generic_Aux;
36 with Ada.Characters.Handling; use Ada.Characters.Handling;
37 with Interfaces.C_Streams; use Interfaces.C_Streams;
39 -- Note: this package does not yet deal properly with wide characters ???
41 package body Ada.Text_IO.Enumeration_Aux is
43 -----------------------
44 -- Local Subprograms --
45 -----------------------
47 -- These definitions replace the ones in Ada.Characters.Handling, which
48 -- do not seem to work for some strange not understood reason ??? at
49 -- least in the OS/2 version.
51 function To_Lower (C : Character) return Character;
52 function To_Upper (C : Character) return Character;
58 procedure Get_Enum_Lit
70 C := Character'Val (ch);
72 -- Character literal case. If the initial character is a quote, then
73 -- we read as far as we can without backup (see ACVC test CE3905L)
76 Store_Char (File, ch, Buf, Buflen);
80 if ch in 16#20# .. 16#7E# or else ch >= 16#80# then
81 Store_Char (File, ch, Buf, Buflen);
85 if ch = Character'Pos (''') then
86 Store_Char (File, ch, Buf, Buflen);
95 -- Similarly for identifiers, read as far as we can, in particular,
96 -- do read a trailing underscore (again see ACVC test CE3905L to
97 -- understand why we do this, although it seems somewhat peculiar).
100 -- Identifier must start with a letter
102 if not Is_Letter (C) then
107 -- If we do have a letter, loop through the characters quitting on
108 -- the first non-identifier character (note that this includes the
109 -- cases of hitting a line mark or page mark).
112 C := Character'Val (ch);
113 Store_Char (File, Character'Pos (To_Upper (C)), Buf, Buflen);
117 C := Character'Val (ch);
119 exit when not Is_Letter (C)
120 and then not Is_Digit (C)
124 and then Buf (Buflen) = '_';
141 Actual_Width : constant Count := Count'Max (Count (Width), Item'Length);
144 if Set = Lower_Case and then Item (1) /= ''' then
146 Iteml : String (Item'First .. Item'Last);
149 for J in Item'Range loop
150 Iteml (J) := To_Lower (Item (J));
153 Put_Item (File, Iteml);
157 Put_Item (File, Item);
160 for J in 1 .. Actual_Width - Item'Length loop
177 if Item'Length > To'Length then
182 for J in Item'Range loop
183 if Set = Lower_Case and then Item (1) /= ''' then
184 To (Ptr) := To_Lower (Item (J));
186 To (Ptr) := Item (J);
192 while Ptr <= To'Last loop
203 procedure Scan_Enum_Lit
210 -- Processing for Scan_Enum_Lit
213 String_Skip (From, Start);
215 -- Character literal case. If the initial character is a quote, then
216 -- we read as far as we can without backup (see ACVC test CE3905L
217 -- which is for the analogous case for reading from a file).
219 if From (Start) = ''' then
222 if Stop = From'Last then
228 if From (Stop) in ' ' .. '~'
229 or else From (Stop) >= Character'Val (16#80#)
231 if Stop = From'Last then
236 if From (Stop) = ''' then
245 -- Similarly for identifiers, read as far as we can, in particular,
246 -- do read a trailing underscore (again see ACVC test CE3905L to
247 -- understand why we do this, although it seems somewhat peculiar).
250 -- Identifier must start with a letter
252 if not Is_Letter (From (Start)) then
256 -- If we do have a letter, loop through the characters quitting on
257 -- the first non-identifier character (note that this includes the
258 -- cases of hitting a line mark or page mark).
261 while Stop < From'Last loop
262 C := From (Stop + 1);
264 exit when not Is_Letter (C)
265 and then not Is_Digit (C)
269 and then From (Stop) = '_';
281 function To_Lower (C : Character) return Character is
283 if C in 'A' .. 'Z' then
284 return Character'Val (Character'Pos (C) + 32);
290 function To_Upper (C : Character) return Character is
292 if C in 'a' .. 'z' then
293 return Character'Val (Character'Pos (C) - 32);
299 end Ada.Text_IO.Enumeration_Aux;