| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- C S E T S -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2013, 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 3, 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. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- You should have received a copy of the GNU General Public License and -- |
| -- a copy of the GCC Runtime Library Exception along with this program; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| package Csets is |
| pragma Elaborate_Body; |
| |
| -- This package contains character tables for the various character |
| -- sets that are supported for source representation. Character and |
| -- string literals are not affected, only identifiers. For each set, |
| -- the table in this package gives the mapping of letters to their |
| -- upper case equivalent. Each table thus provides the information |
| -- for building the table used to fold lower case to upper case, and |
| -- also the table of flags showing which characters are allowed in |
| -- identifiers. |
| |
| type Translate_Table is array (Character) of Character; |
| -- Type used to describe translate tables |
| |
| type Char_Array_Flags is array (Character) of Boolean; |
| -- Type used for character attribute arrays. Note that we deliberately |
| -- do NOT pack this table, since we don't want the extra overhead of |
| -- accessing a packed bit string. |
| |
| ---------------------------------------------- |
| -- Character Tables For Current Compilation -- |
| ---------------------------------------------- |
| |
| procedure Initialize; |
| -- Routine to initialize following character tables, whose content depends |
| -- on the character code being used to represent the source program. In |
| -- particular, the use of the upper half of the 8-bit code set varies. |
| -- The character set in use is specified by the value stored in |
| -- Opt.Identifier_Character_Set, which has the following settings: |
| |
| -- '1' Latin-1 (ISO-8859-1) |
| -- '2' Latin-2 (ISO-8859-2) |
| -- '3' Latin-3 (ISO-8859-3) |
| -- '4' Latin-4 (ISO-8859-4) |
| -- '5' Cyrillic (ISO-8859-5) |
| -- 'p' IBM PC (code page 437) |
| -- '8' IBM PC (code page 850) |
| -- '9' Latin-9 (ISO-8859-15) |
| -- 'f' Full upper set (all distinct) |
| -- 'n' No upper characters (Ada/83 rules) |
| -- 'w' Latin-1 plus wide characters also allowed |
| |
| function Is_Upper_Case_Letter (C : Character) return Boolean; |
| pragma Inline (Is_Upper_Case_Letter); |
| -- Determine if character is upper case letter |
| |
| function Is_Lower_Case_Letter (C : Character) return Boolean; |
| pragma Inline (Is_Lower_Case_Letter); |
| -- Determine if character is lower case letter |
| |
| Fold_Upper : Translate_Table; |
| -- Table to fold lower case identifier letters to upper case |
| |
| Fold_Lower : Translate_Table; |
| -- Table to fold upper case identifier letters to lower case |
| |
| Identifier_Char : Char_Array_Flags; |
| -- This table has True entries for all characters that can legally appear |
| -- in identifiers, including digits, the underline character, all letters |
| -- including upper and lower case and extended letters (as controlled by |
| -- the setting of Opt.Identifier_Character_Set), left bracket for brackets |
| -- notation wide characters and also ESC if wide characters are permitted |
| -- in identifiers using escape sequences starting with ESC. |
| |
| end Csets; |
