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>
127 lines
3.7 KiB
C
127 lines
3.7 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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/*
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* ctype-like functions specific to NASM
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*/
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#ifndef NASM_NCTYPE_H
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#define NASM_NCTYPE_H
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#include "compiler.h"
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void nasm_ctype_init(void);
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extern unsigned char nasm_tolower_tab[256];
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static inline char nasm_tolower(char x)
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{
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return nasm_tolower_tab[(unsigned char)x];
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}
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/*
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* NASM ctype table
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*/
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enum nasm_ctype {
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NCT_CTRL = 0x0001,
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NCT_SPACE = 0x0002,
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NCT_ASCII = 0x0004,
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NCT_LOWER = 0x0008, /* isalpha(x) && tolower(x) == x */
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NCT_UPPER = 0x0010, /* isalpha(x) && tolower(x) != x */
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NCT_DIGIT = 0x0020,
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NCT_HEX = 0x0040,
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NCT_ID = 0x0080,
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NCT_IDSTART = 0x0100,
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NCT_MINUS = 0x0200, /* - */
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NCT_DOLLAR = 0x0400, /* $ */
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NCT_UNDER = 0x0800, /* _ */
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NCT_QUOTE = 0x1000 /* " ' ` */
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};
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extern uint16_t nasm_ctype_tab[256];
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static inline bool nasm_ctype(unsigned char x, enum nasm_ctype mask)
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{
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return (nasm_ctype_tab[x] & mask) != 0;
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}
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static inline bool nasm_isspace(char x)
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{
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return nasm_ctype(x, NCT_SPACE);
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}
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static inline bool nasm_isalpha(char x)
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{
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return nasm_ctype(x, NCT_LOWER|NCT_UPPER);
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}
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static inline bool nasm_isdigit(char x)
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{
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return nasm_ctype(x, NCT_DIGIT);
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}
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static inline bool nasm_isalnum(char x)
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{
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return nasm_ctype(x, NCT_LOWER|NCT_UPPER|NCT_DIGIT);
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}
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static inline bool nasm_isxdigit(char x)
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{
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return nasm_ctype(x, NCT_HEX);
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}
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static inline bool nasm_isidstart(char x)
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{
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return nasm_ctype(x, NCT_IDSTART);
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}
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static inline bool nasm_isidchar(char x)
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{
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return nasm_ctype(x, NCT_ID);
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}
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static inline bool nasm_isbrcchar(char x)
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{
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return nasm_ctype(x, NCT_ID|NCT_MINUS);
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}
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static inline bool nasm_isnumstart(char x)
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{
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return nasm_ctype(x, NCT_DIGIT|NCT_DOLLAR);
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}
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static inline bool nasm_isnumchar(char x)
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{
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return nasm_ctype(x, NCT_DIGIT|NCT_LOWER|NCT_UPPER|NCT_UNDER);
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}
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static inline bool nasm_isquote(char x)
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{
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return nasm_ctype(x, NCT_QUOTE);
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}
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static inline void nasm_ctype_tasm_mode(void)
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{
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/* No differences at the present moment */
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}
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#endif /* NASM_NCTYPE_H */
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