VGRINDEFS(5)        UNIX Programmer's Manual         VGRINDEFS(5)

NAME
     vgrindefs - vgrind's language definition data base

SYNOPSIS
     /usr/lib/vgrindefs

DESCRIPTION
     _V_g_r_i_n_d_e_f_s contains all language definitions for vgrind.  The
     data base is very similar to _t_e_r_m_c_a_p(_5).

FIELDS
     The following table names and describes each field.

     Name   Type  Description
     pb     str   regular expression for start of a procedure
     bb     str   regular expression for start of a lexical block
     be     str   regular expression for the end of a lexical block
     cb     str   regular expression for the start of a comment
     ce     str   regular expression for the end of a comment
     sb     str   regular expression for the start of a string
     se     str   regular expression for the end of a string
     lb     str   regular expression for the start of a character constant
     le     str   regular expression for the end of a character constant
     tl     bool  present means procedures only defined at top lexical level
     oc     bool  present means upper and lower case are equivalent
     kw     str   a list of keywords separated by commas

     A Sample Entry

     The following entry, which describes the C language, is typ-
     ical of a language entry.

     C|c:   :pb=^\d?*?\d?\p\d??):bb={:be=}:cb=/*:ce=*/:sb=":se=\e":\
            :lb=':le=\e':tl:\
            :kw=asm auto break case char continue default do double else enum\
            extern float for fortran goto if int long register return short\
            sizeof static struct switch typedef union unsigned while #define\
            #else #endif #if #ifdef #ifndef #include #undef # define else endif\
            if ifdef ifndef include undef:

     Note that the first field is just the language name (and any
     variants of it).  Thus the C language could be specified to
     _v_g_r_i_n_d(1) as "c" of "C".

     Entries may continue onto multiple lines by giving a \ as
     the last character of a line, and that empty fields may be
     included for readability (here between the last field on a
     line and the first field on the next).  Capabilities in
     _v_g_r_i_n_d_e_f_s are of two types: Boolean capabilities which indi-
     cate that the language has some particular feature and
     string capabilities, which give a regular expression or key-
     word list.

Printed 5/17/83                                                 1

VGRINDEFS(5)        UNIX Programmer's Manual         VGRINDEFS(5)

     REGULAR EXPRESSIONS

     _V_g_r_i_n_d_e_f_s uses a regular expression which is very similar to
     those of _e_x(1) and _l_e_x(1).  The metasymbols and their mean-
     ings are:

     $    the end of a line

     ^    the beginning of a line

     \d   a delimiter (space, tab, newline, start of line)

     \a   matches any string of symbols (like .* in lex)

     \p   matches any alphanumeric name.  Used to match the pro-
          cedure name in the regular expression which defines the
          start of a procedure.

     ()   grouping

     |    alternation

     ?    last item is optional

     Unlike other regular expressions in the system,  these match
     words and not characters.  Hence something like
     "(tramp|steamer)flies?" would match "tramp", "steamer",
     "trampflies", or "steamerflies".

     KEYWORD LIST

     The keyword list is just a list of keywords in the language
     separated by spaces.  If the "oc" boolean is specified,
     indicating that upper and lower case are equivalent, then
     all the keywords should be specified in lower case.

FILES
     /usr/lib/vgrindefs  file containing terminal descriptions

SEE ALSO
     troff(1), vgrind(1)

AUTHOR
     Dave Presotto

Printed 5/17/83                                                 2