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9df075595e
? in identifiers turns out to be used in the field even in non-TASM mode. Resolve this by allowing it in an identifier still, but treat '?' by itself the same as we would a keyword, meaning that it needs to be separated from other identifier characters. In other words: a ? b : c ; conditional expression a?b:c ; seg:off expression seg = a?b, off = c Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 1996-2018 The NASM Authors - All Rights Reserved
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* See the file AUTHORS included with the NASM distribution for
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* the specific copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following
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* conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ----------------------------------------------------------------------- */
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#include "nctype.h"
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#include <ctype.h>
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/*
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* Table of tolower() results. This avoids function calls
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* on some platforms.
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*/
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unsigned char nasm_tolower_tab[256];
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static void tolower_tab_init(void)
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{
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int i;
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for (i = 0; i < 256; i++)
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nasm_tolower_tab[i] = tolower(i);
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}
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/*
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* Table of character type flags; some are simply <ctype.h>,
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* some are NASM-specific.
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*/
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uint16_t nasm_ctype_tab[256];
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#if !defined(HAVE_ISCNTRL) && !defined(iscntrl)
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# define iscntrl(x) ((x) < 32)
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#endif
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#if !defined(HAVE_ISASCII) && !defined(isascii)
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# define isascii(x) ((x) < 128)
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#endif
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static void ctype_tab_init(void)
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{
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int i;
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for (i = 0; i < 256; i++) {
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enum nasm_ctype ct = 0;
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if (iscntrl(i))
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ct |= NCT_CTRL;
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if (isascii(i))
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ct |= NCT_ASCII;
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if (isspace(i) && i != '\n')
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ct |= NCT_SPACE;
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if (isalpha(i)) {
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ct |= (nasm_tolower(i) == i) ? NCT_LOWER : NCT_UPPER;
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ct |= NCT_ID|NCT_IDSTART;
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}
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if (isdigit(i))
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ct |= NCT_DIGIT|NCT_ID;
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if (isxdigit(i))
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ct |= NCT_HEX;
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/* Non-ASCII character, but no ctype returned (e.g. Unicode) */
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if (!ct && !ispunct(i))
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ct |= NCT_ID|NCT_IDSTART;
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nasm_ctype_tab[i] = ct;
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}
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nasm_ctype_tab['-'] |= NCT_MINUS;
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nasm_ctype_tab['$'] |= NCT_DOLLAR|NCT_ID;
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nasm_ctype_tab['_'] |= NCT_UNDER|NCT_ID|NCT_IDSTART;
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nasm_ctype_tab['.'] |= NCT_ID|NCT_IDSTART;
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nasm_ctype_tab['@'] |= NCT_ID|NCT_IDSTART;
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nasm_ctype_tab['?'] |= NCT_ID|NCT_IDSTART;
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nasm_ctype_tab['#'] |= NCT_ID;
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nasm_ctype_tab['~'] |= NCT_ID;
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nasm_ctype_tab['\''] |= NCT_QUOTE;
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nasm_ctype_tab['\"'] |= NCT_QUOTE;
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nasm_ctype_tab['`'] |= NCT_QUOTE;
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}
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void nasm_ctype_init(void)
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{
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tolower_tab_init();
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ctype_tab_init();
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}
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