Logo Search packages:      
Sourcecode: ksh version File versions  Download package

lexstates.h

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1982-2007 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                  David Korn <dgk@research.att.com>                   *
*                                                                      *
***********************************************************************/
#pragma prototyped
#ifndef S_BREAK
#define S_BREAK   1     /* end of token */
#define S_EOF     2     /* end of buffer */
#define S_NL      3     /* new-line when not a token */
#define S_RES     4     /* first character of reserved word */
#define S_NAME    5     /* other identifier characters */
#define S_REG     6     /* non-special characters */
#define S_TILDE   7     /* first char is tilde */
#define S_PUSH    8
#define S_POP     9
#define S_BRACT   10
#define S_LIT     11    /* literal quote character */
#define S_NLTOK   12    /* new-line token */
#define S_OP      13    /* operator character */
#define S_PAT     14    /* pattern characters * and ? */
#define S_EPAT    15    /* pattern char when followed by ( */
#define S_EQ      16    /* assignment character */
#define S_COM     17    /* comment character */
#define S_MOD1    18    /* ${...} modifier character - old quoting */
#define S_MOD2    19    /* ${...} modifier character - new quoting */
#define S_ERR     20    /* invalid character in ${...} */
#define S_SPC1    21    /* special prefix characters after $ */
#define S_SPC2    22    /* special characters after $ */
#define S_DIG     23    /* digit character after $*/
#define S_ALP     24    /* alpahbetic character after $ */
#define S_LBRA    25    /* left brace after $ */
#define S_RBRA    26    /* right brace after $ */
#define S_PAR     27    /* set for $( */
#define S_ENDCH   28    /* macro expansion terminator */
#define S_SLASH   29    /* / character terminates ~ expansion  */
#define S_COLON   30    /* for character : */
#define S_LABEL   31    /* for goto label */
#define S_EDOL    32    /* ends $identifier */
#define S_BRACE   33    /* left brace */
#define S_DOT     34    /* . char */
#define S_META    35    /* | & ; < > inside ${...} reserved for future use */
#define S_SPACE   S_BREAK     /* IFS space characters */
#define S_DELIM   S_RES /* IFS delimter characters */
#define S_MBYTE S_NAME  /* IFS first byte of multi-byte char */
#define S_BLNK    36    /* space or tab */
/* The following must be the highest numbered states */
#define S_QUOTE   37    /* double quote character */
#define S_GRAVE   38    /* old comsub character */
#define S_ESC     39    /* escape character */
#define S_DOL     40    /* $ subsitution character */
#define S_ESC2    41    /* escape character inside '...' */

/* These are the lexical state table names */
#define ST_BEGIN  0
#define ST_NAME         1
#define ST_NORM         2
#define ST_LIT          3
#define ST_QUOTE  4
#define ST_NESTED 5
#define ST_DOL          6
#define ST_BRACE  7
#define ST_DOLNAME      8
#define ST_MACRO  9
#define ST_QNEST  10
#define ST_NONE         11

#include "FEATURE/locale"

#if _hdr_wchar
#   include <wchar.h>
#   if _hdr_wctype
#       include <wctype.h>
#       undef  isalpha
#       define isalpha(x)      iswalpha(x)
#       if defined(iswblank) || _lib_iswblank
#           undef  isblank
#           define isblank(x)      iswblank(x)
#       else
#           if _lib_wctype && _lib_iswctype
#               define _lib_iswblank      -1
#               undef  isblank
#             define isblank(x)     local_iswblank(x)
              extern int            local_iswblank(wchar_t);
#           endif
#       endif
#   endif
#endif
#ifndef isblank
#   define isblank(x)      ((x)==' '||(x)=='\t')
#endif

#undef LEN
#if SHOPT_MULTIBYTE
    static int NXT, LEN;
#   define isaname(c)   ((c)>0xff?isalpha(c): sh_lexstates[ST_NAME][(c)]==0)
#   define isaletter(c) ((c)>0xff?isalpha(c): sh_lexstates[ST_DOL][(c)]==S_ALP && (c)!='.')
#else
#   undef mbwide
#   define mbwide()     (0)
#   define LEN          1
#   define isaname(c)   (sh_lexstates[ST_NAME][c]==0)
#   define isaletter(c) (sh_lexstates[ST_DOL][c]==S_ALP && (c)!='.')
#endif
#define STATE(s,c)      (mbwide()?(c=fcmbstate(s,&NXT,&LEN),NXT):s[c=fcget()])
#define isadigit(c)     (sh_lexstates[ST_DOL][c]==S_DIG)
#define isastchar(c)    ((c)=='@' || (c)=='*')
#define isexp(c)  (sh_lexstates[ST_MACRO][c]==S_PAT||(c)=='$'||(c)=='`')
#define ismeta(c) (sh_lexstates[ST_NAME][c]==S_BREAK)

extern char *sh_lexstates[ST_NONE];
extern const char *sh_lexrstates[ST_NONE];
extern const char e_lexversion[];
extern const char e_lexspace[];
extern const char e_lexslash[];
extern const char e_lexlabignore[];
extern const char e_lexlabunknown[];
extern const char e_lexsyntax1[];
extern const char e_lexsyntax2[];
extern const char e_lexsyntax3[];
extern const char e_lexobsolete1[];
extern const char e_lexobsolete2[];
extern const char e_lexobsolete3[];
extern const char e_lexobsolete4[];
extern const char e_lexobsolete5[];
extern const char e_lexobsolete6[];
extern const char e_lexusebrace[];
extern const char e_lexusequote[];
extern const char e_lexescape[];
extern const char e_lexquote[];
extern const char e_lexnested[];
extern const char e_lexbadchar[];
extern const char e_lexlongquote[];
extern const char e_lexfuture[];
extern const char e_lexzerobyte[];
extern const char e_lexemptyfor[];
#endif

Generated by  Doxygen 1.6.0   Back to index