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/* Copyright (C) 1990, 1995, 1996 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: scanchar.h,v 1.4 2002/02/21 22:24:53 giles Exp $ */
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/* Definitions for token scanner character type table */
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/* Requires scommon.h */
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#ifndef scanchar_INCLUDED
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# define scanchar_INCLUDED
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/*
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* An array for fast scanning of names, numbers, and hex strings.
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* Indexed by character code (including exceptions), it contains:
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* 0 - max_radix-1 for valid digits,
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* ctype_name for other characters valid in names,
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* ctype_btoken for characters introducing binary tokens
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* (if the binary token feature is enabled),
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* ctype_space for whitespace characters,
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* ctype_exception for exceptions (see scommon.h), and
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* ctype_other for everything else.
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* Exceptions are negative values; we bias the table origin accordingly.
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*
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* NOTE: This table is defined in iscantab.c and used in a variety of places.
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* If any of the values below change, you must edit the table.
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*/
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extern const byte scan_char_array[max_stream_exception + 256];
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#define scan_char_decoder (&scan_char_array[max_stream_exception])
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#define min_radix 2
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#define max_radix 36
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#define ctype_name 100
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#define ctype_btoken 101
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#define ctype_space 102
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#define ctype_other 103
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#define ctype_exception 104
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/* Special characters with no \xxx representation */
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#define char_NULL 0
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#define char_EOT 004 /* ^D, job delimiter */
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#define char_VT 013 /* ^K, vertical tab */
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#define char_DOS_EOF 032 /* ^Z */
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/*
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* Most systems define '\n' as 0x0a and '\r' as 0x0d; however, OS-9
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* has '\n' = '\r' = 0x0d and '\l' = 0x0a. To deal with this,
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* we introduce abstract characters char_CR and char_EOL such that
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* any of [char_CR], [char_CR char_EOL], or [char_EOL] is recognized
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* as an end-of-line sequence.
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*/
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#define char_CR '\r'
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#if '\r' == '\n'
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# define char_EOL 0x0a /* non-OS-9 compilers complain about '\l' */
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#else
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# define char_EOL '\n'
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#endif
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#endif /* scanchar_INCLUDED */
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