usr/src/lib/libshell/common/include/lexstates.h

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1982-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                  David Korn <dgk@research.att.com>                   *
  18 *                                                                      *
  19 ***********************************************************************/
  20 #pragma prototyped
  21 #ifndef S_BREAK
  22 #define S_BREAK 1       /* end of token */
  23 #define S_EOF   2       /* end of buffer */
  24 #define S_NL    3       /* new-line when not a token */
  25 #define S_RES   4       /* first character of reserved word */
  26 #define S_NAME  5       /* other identifier characters */
  27 #define S_REG   6       /* non-special characters */
  28 #define S_TILDE 7       /* first char is tilde */
  29 #define S_PUSH  8
  30 #define S_POP   9
  31 #define S_BRACT 10
  32 #define S_LIT   11      /* literal quote character */
  33 #define S_NLTOK 12      /* new-line token */
  34 #define S_OP    13      /* operator character */
  35 #define S_PAT   14      /* pattern characters * and ? */
  36 #define S_EPAT  15      /* pattern char when followed by ( */
  37 #define S_EQ    16      /* assignment character */
  38 #define S_COM   17      /* comment character */
  39 #define S_MOD1  18      /* ${...} modifier character - old quoting */
  40 #define S_MOD2  19      /* ${...} modifier character - new quoting */
  41 #define S_ERR   20      /* invalid character in ${...} */
  42 #define S_SPC1  21      /* special prefix characters after $ */
  43 #define S_SPC2  22      /* special characters after $ */
  44 #define S_DIG   23      /* digit character after $*/
  45 #define S_ALP   24      /* alpahbetic character after $ */
  46 #define S_LBRA  25      /* left brace after $ */
  47 #define S_RBRA  26      /* right brace after $ */
  48 #define S_PAR   27      /* set for $( */
  49 #define S_ENDCH 28      /* macro expansion terminator */
  50 #define S_SLASH 29      /* / character terminates ~ expansion  */
  51 #define S_COLON 30      /* for character : */
  52 #define S_LABEL 31      /* for goto label */
  53 #define S_EDOL  32      /* ends $identifier */
  54 #define S_BRACE 33      /* left brace */
  55 #define S_DOT   34      /* . char */
  56 #define S_META  35      /* | & ; < > inside ${...} reserved for future use */
  57 #define S_SPACE S_BREAK /* IFS space characters */
  58 #define S_DELIM S_RES   /* IFS delimter characters */
  59 #define S_MBYTE S_NAME  /* IFS first byte of multi-byte char */
  60 #define S_BLNK  36      /* space or tab */
  61 /* The following must be the highest numbered states */
  62 #define S_QUOTE 37      /* double quote character */
  63 #define S_GRAVE 38      /* old comsub character */
  64 #define S_ESC   39      /* escape character */
  65 #define S_DOL   40      /* $ subsitution character */
  66 #define S_ESC2  41      /* escape character inside '...' */
  67
  68 /* These are the lexical state table names */
  69 #define ST_BEGIN        0
  70 #define ST_NAME         1
  71 #define ST_NORM         2
  72 #define ST_LIT          3
  73 #define ST_QUOTE        4
  74 #define ST_NESTED       5
  75 #define ST_DOL          6
  76 #define ST_BRACE        7
  77 #define ST_DOLNAME      8
  78 #define ST_MACRO        9
  79 #define ST_QNEST        10
  80 #define ST_NONE         11
  81
  82 #include "FEATURE/locale"
  83
  84 #if _hdr_wchar
  85 #   include <wchar.h>
  86 #   if _hdr_wctype
  87 #       include <wctype.h>
  88 #       undef  isalpha
  89 #       define isalpha(x)      iswalpha(x)
  90 #       if defined(iswblank) || _lib_iswblank
  91 #           undef  isblank
  92 #           define isblank(x)      iswblank(x)
  93 #       else
  94 #           if _lib_wctype && _lib_iswctype
  95 #               define _lib_iswblank    -1
  96 #               undef  isblank
  97 #               define isblank(x)       local_iswblank(x)
  98                 extern int              local_iswblank(wchar_t);
  99 #           endif
 100 #       endif
 101 #   endif
 102 #endif
 103 #ifndef isblank
 104 #   define isblank(x)      ((x)==' '||(x)=='\t')
 105 #endif
 106
 107 #undef LEN
 108 #if SHOPT_MULTIBYTE
 109     static int NXT, LEN;
 110 #   define isaname(c)   ((c)>0xff?isalpha(c): sh_lexstates[ST_NAME][(c)]==0)
 111 #   define isaletter(c) ((c)>0xff?isalpha(c): sh_lexstates[ST_DOL][(c)]==S_ALP && (c)!='.')
 112 #else
 113 #   undef mbwide
 114 #   define mbwide()     (0)
 115 #   define LEN          1
 116 #   define isaname(c)   (sh_lexstates[ST_NAME][c]==0)
 117 #   define isaletter(c) (sh_lexstates[ST_DOL][c]==S_ALP && (c)!='.')
 118 #endif
 119 #define STATE(s,c)      (mbwide()?(c=fcmbstate(s,&NXT,&LEN),NXT):s[c=fcget()])
 120 #define isadigit(c)     (sh_lexstates[ST_DOL][c]==S_DIG)
 121 #define isastchar(c)    ((c)=='@' || (c)=='*')
 122 #define isexp(c)        (sh_lexstates[ST_MACRO][c]==S_PAT||(c)=='$'||(c)=='`')
 123 #define ismeta(c)       (sh_lexstates[ST_NAME][c]==S_BREAK)
 124
 125 extern char *sh_lexstates[ST_NONE];
 126 extern const char *sh_lexrstates[ST_NONE];
 127 extern const char e_lexversion[];
 128 extern const char e_lexspace[];
 129 extern const char e_lexslash[];
 130 extern const char e_lexlabignore[];
 131 extern const char e_lexlabunknown[];
 132 extern const char e_lexsyntax1[];
 133 extern const char e_lexsyntax2[];
 134 extern const char e_lexsyntax3[];
 135 extern const char e_lexobsolete1[];
 136 extern const char e_lexobsolete2[];
 137 extern const char e_lexobsolete3[];
 138 extern const char e_lexobsolete4[];
 139 extern const char e_lexobsolete5[];
 140 extern const char e_lexobsolete6[];
 141 extern const char e_lexnonstandard[];
 142 extern const char e_lexusebrace[];
 143 extern const char e_lexusequote[];
 144 extern const char e_lexescape[];
 145 extern const char e_lexquote[];
 146 extern const char e_lexnested[];
 147 extern const char e_lexbadchar[];
 148 extern const char e_lexlongquote[];
 149 extern const char e_lexfuture[];
 150 extern const char e_lexzerobyte[];
 151 extern const char e_lexemptyfor[];
 152 extern const char e_lextypeset[];
 153 #endif