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/* |
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* Ascend Character Types |
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* Shortcut character recognition |
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* by Tom Epperly |
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* Version: $Revision: 1.6 $ |
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* Version control file: $RCSfile: actype.h,v $ |
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* Date last modified: $Date: 1997/07/18 12:27:46 $ |
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* Last modified by: $Author: mthomas $ |
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* |
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* This file is part of the Ascend Language Interpreter. |
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* |
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* Copyright (C) 1990, 1993, 1994 Thomas Guthrie Epperly |
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* |
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* The Ascend Language Interpreter is free software; you can redistribute |
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* it and/or modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of the |
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* License, or (at your option) any later version. |
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* |
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* The Ascend Language Interpreter is distributed in hope that it will be |
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with the program; if not, write to the Free Software Foundation, |
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* Inc., 675 Mass Ave, Cambridge, MA 02139 USA. Check the file named |
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* COPYING. |
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*/ |
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|
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/** @file |
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* Ascend character types and shortcut character recognition. |
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* <pre> |
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* When #including actype.h, make sure these files are #included first: |
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* #include "utilities/ascConfig.h" |
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* #include "compiler.h" |
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* </pre> |
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*/ |
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|
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#ifndef __ACTYPE_H_SEEN__ |
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#define __ACTYPE_H_SEEN__ |
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|
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extern CONST unsigned char ascend_char_t[]; |
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/**< |
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* Array of type codes for ASCII characters. |
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* Valid array indices are 0-255, corresponding to the valid ASCII values. |
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* The type of a given character can be tested using the bit masks UNIT_CHAR, |
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* ID_CHAR, DIGIT_CHAR, SPACE_CHAR, and ALPHA_CHAR. |
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*/ |
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|
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#define UNIT_CHAR 1 |
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/**< Bit mask for character valid inside unit delimiters. */ |
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#define ID_CHAR 2 |
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/**< Bit mask for character valid in an identifier. */ |
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#define DIGIT_CHAR 4 |
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/**< Bit mask for a digit character. */ |
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#define SPACE_CHAR 8 |
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/**< Bit mask for a whitespace character. */ |
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#define ALPHA_CHAR 16 |
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/**< Bit mask for an alpha character. */ |
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|
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#define isunit(c) ((ascend_char_t[(unsigned char)c])&UNIT_CHAR) |
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/**< |
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* Test whether c is a character than can appear inside unit delimeters. |
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* @param c char to test |
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* @return Evaluates to TRUE if c is a valid unit character |
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*/ |
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|
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#define isidchar(c) ((ascend_char_t[(unsigned char)c])&ID_CHAR) |
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/**< |
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* Test whether c is a character that can appear in an identifier. |
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* @param c char to test |
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* @return Evaluates to TRUE if c is a valid identifier character |
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*/ |
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|
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#endif /* __ACTYPE_H_SEEN__ */ |
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