git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 70482933 RK |
1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT COMPILER COMPONENTS -- | |
| 4 | -- -- | |
| 5 | -- C S E T S -- | |
| 6 | -- -- | |
| 7 | -- S p e c -- | |
| 8 | -- -- | |
| 9de61fcb | 9 | -- Copyright (C) 1992-2005, Free Software Foundation, Inc. -- |
| 70482933 RK |
10 | -- -- |
| 11 | -- GNAT is free software; you can redistribute it and/or modify it under -- | |
| 12 | -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 13 | -- ware Foundation; either version 2, or (at your option) any later ver- -- | |
| 14 | -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
| 15 | -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
| 16 | -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- | |
| 17 | -- for more details. You should have received a copy of the GNU General -- | |
| 18 | -- Public License distributed with GNAT; see file COPYING. If not, write -- | |
| cb5fee25 KC |
19 | -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- |
| 20 | -- Boston, MA 02110-1301, USA. -- | |
| 70482933 RK |
21 | -- -- |
| 22 | -- As a special exception, if other files instantiate generics from this -- | |
| 23 | -- unit, or you link this unit with other files to produce an executable, -- | |
| 24 | -- this unit does not by itself cause the resulting executable to be -- | |
| 25 | -- covered by the GNU General Public License. This exception does not -- | |
| 26 | -- however invalidate any other reasons why the executable file might be -- | |
| 27 | -- covered by the GNU Public License. -- | |
| 28 | -- -- | |
| 29 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 71ff80dc | 30 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| 70482933 RK |
31 | -- -- |
| 32 | ------------------------------------------------------------------------------ | |
| 33 | ||
| 34 | package Csets is | |
| 009186e0 | 35 | pragma Elaborate_Body; |
| 70482933 RK |
36 | |
| 37 | -- This package contains character tables for the various character | |
| 38 | -- sets that are supported for source representation. Character and | |
| 39 | -- string literals are not affected, only identifiers. For each set, | |
| 40 | -- the table in this package gives the mapping of letters to their | |
| 41 | -- upper case equivalent. Each table thus provides the information | |
| 42 | -- for building the table used to fold lower case to upper case, and | |
| 43 | -- also the table of flags showing which characters are allowed in | |
| 44 | -- identifiers. | |
| 45 | ||
| 46 | type Translate_Table is array (Character) of Character; | |
| 47 | -- Type used to describe translate tables | |
| 48 | ||
| 49 | type Char_Array_Flags is array (Character) of Boolean; | |
| 50 | -- Type used for character attribute arrays. Note that we deliberately | |
| 51 | -- do NOT pack this table, since we don't want the extra overhead of | |
| 52 | -- accessing a packed bit string. | |
| 53 | ||
| 15ce9ca2 AC |
54 | ---------------------------------------------- |
| 55 | -- Character Tables For Current Compilation -- | |
| 56 | ---------------------------------------------- | |
| 70482933 RK |
57 | |
| 58 | procedure Initialize; | |
| 59 | -- Routine to initialize following character tables, whose content depends | |
| 60 | -- on the character code being used to represent the source program. In | |
| 61 | -- particular, the use of the upper half of the 8-bit code set varies. | |
| 62 | -- The character set in use is specified by the value stored in | |
| 63 | -- Opt.Identifier_Character_Set, which has the following settings: | |
| 64 | ||
| 07fc65c4 GB |
65 | -- '1' Latin-1 (ISO-8859-1) |
| 66 | -- '2' Latin-2 (ISO-8859-2) | |
| 67 | -- '3' Latin-3 (ISO-8859-3) | |
| 68 | -- '4' Latin-4 (ISO-8859-4) | |
| 69 | -- '5' Latin-5 (ISO-8859-5, Cyrillic) | |
| 70 | -- 'p' IBM PC (code page 437) | |
| 71 | -- '8' IBM PC (code page 850) | |
| 72 | -- '9' Latin-9 (ISO-9959-9) | |
| 70482933 RK |
73 | -- 'f' Full upper set (all distinct) |
| 74 | -- 'n' No upper characters (Ada/83 rules) | |
| 75 | -- 'w' Latin-1 plus wide characters also allowed | |
| 76 | ||
| 77 | function Is_Upper_Case_Letter (C : Character) return Boolean; | |
| 78 | pragma Inline (Is_Upper_Case_Letter); | |
| 79 | -- Determine if character is upper case letter | |
| 80 | ||
| 81 | function Is_Lower_Case_Letter (C : Character) return Boolean; | |
| 82 | pragma Inline (Is_Lower_Case_Letter); | |
| 83 | -- Determine if character is lower case letter | |
| 84 | ||
| 85 | Fold_Upper : Translate_Table; | |
| 86 | -- Table to fold lower case identifier letters to upper case | |
| 87 | ||
| 88 | Fold_Lower : Translate_Table; | |
| 89 | -- Table to fold upper case identifier letters to lower case | |
| 90 | ||
| 91 | Identifier_Char : Char_Array_Flags; | |
| 92 | -- This table has True entries for all characters that can legally appear | |
| 93 | -- in identifiers, including digits, the underline character, all letters | |
| 94 | -- including upper and lower case and extended letters (as controlled by | |
| 95 | -- the setting of Opt.Identifier_Character_Set, left bracket for brackets | |
| 96 | -- notation wide characters and also ESC if wide characters are permitted | |
| 97 | -- in identifiers using escape sequences starting with ESC. | |
| 98 | ||
| 99 | end Csets; |