159 lines
5.6 KiB
Groff
159 lines
5.6 KiB
Groff
|
.\" Copyright (c) 1989, 1991, 1993
|
||
|
|
.\" The Regents of the University of California. All rights reserved.
|
||
|
|
.\"
|
||
|
|
.\" Redistribution and use in source and binary forms, with or without
|
||
|
|
.\" modification, are permitted provided that the following conditions
|
||
|
|
.\" are met:
|
||
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer.
|
||
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
||
|
|
.\" documentation and/or other materials provided with the distribution.
|
||
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
||
|
|
.\" must display the following acknowledgement:
|
||
|
|
.\" This product includes software developed by the University of
|
||
|
|
.\" California, Berkeley and its contributors.
|
||
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
||
|
|
.\" may be used to endorse or promote products derived from this software
|
||
|
|
.\" without specific prior written permission.
|
||
|
|
.\"
|
||
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
.\" SUCH DAMAGE.
|
||
|
|
.\"
|
||
|
|
.\" @(#)vgrindefs.5 8.1 (Berkeley) 6/6/93
|
||
|
|
.\"
|
||
|
|
.Dd June 6, 1993
|
||
|
|
.Dt VGRINDEFS 5
|
||
|
|
.Os BSD 4.2
|
||
|
|
.Sh NAME
|
||
|
|
.Nm vgrindefs
|
||
|
|
.Nd language definition data base for
|
||
|
|
.Xr vgrind 1
|
||
|
|
.Sh SYNOPSIS
|
||
|
|
.Nm vgrindefs
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
The
|
||
|
|
.Nm vgrindefs
|
||
|
|
file
|
||
|
|
contains all language definitions for
|
||
|
|
.Xr vgrind 1 .
|
||
|
|
The data base is
|
||
|
|
very similar to
|
||
|
|
.Xr termcap 5 .
|
||
|
|
.Sh FIELDS
|
||
|
|
The following table names and describes each field.
|
||
|
|
.Pp
|
||
|
|
.Bl -column Namexxx Tpexxx
|
||
|
|
.Sy Name Type Description
|
||
|
|
.It "pb str regular expression for start of a procedure"
|
||
|
|
.It "bb str regular expression for start of a lexical block"
|
||
|
|
.It "be str regular expression for the end of a lexical block"
|
||
|
|
.It "cb str regular expression for the start of a comment"
|
||
|
|
.It "ce str regular expression for the end of a comment"
|
||
|
|
.It "sb str regular expression for the start of a string"
|
||
|
|
.It "se str regular expression for the end of a string"
|
||
|
|
.It "lb str regular expression for the start of a character constant"
|
||
|
|
.It "le str regular expression for the end of a character constant"
|
||
|
|
.It "tl bool present means procedures are only defined at the top lexical level"
|
||
|
|
.It "oc bool present means upper and lower case are equivalent"
|
||
|
|
.It "kw str a list of keywords separated by spaces"
|
||
|
|
.El
|
||
|
|
.Pp
|
||
|
|
.Sh EXAMPLES
|
||
|
|
The following entry, which describes the C language, is
|
||
|
|
typical of a language entry.
|
||
|
|
.Bd -literal
|
||
|
|
C|c:\
|
||
|
|
:pb=^\ed?*?\ed?\ep\ed?\e(\ea?\e):bb={:be=}:cb=/*:ce=*/:sb=":se=\ee":\e
|
||
|
|
:lb=':le=\ee':tl:\e
|
||
|
|
:kw=asm auto break case char continue default do double else enum\e
|
||
|
|
extern float for fortran goto if int long register return short\e
|
||
|
|
sizeof static struct switch typedef union unsigned while #define\e
|
||
|
|
#else #endif #if #ifdef #ifndef #include #undef # define else endif\e
|
||
|
|
if ifdef ifndef include undef:
|
||
|
|
.Ed
|
||
|
|
.Pp
|
||
|
|
Note that the first field is just the language name (and any variants
|
||
|
|
of it). Thus the C language could be specified to
|
||
|
|
.Xr vgrind 1
|
||
|
|
as "c" or "C".
|
||
|
|
.Pp
|
||
|
|
Entries may continue onto multiple lines by giving a \e as the last
|
||
|
|
character of a line.
|
||
|
|
Capabilities in
|
||
|
|
.Nm vgrindefs
|
||
|
|
are of two types:
|
||
|
|
Boolean capabilities which indicate that the language has
|
||
|
|
some particular feature
|
||
|
|
and string
|
||
|
|
capabilities which give a regular expression or
|
||
|
|
keyword list.
|
||
|
|
.Sh REGULAR EXPRESSIONS
|
||
|
|
.Nm Vgrindefs
|
||
|
|
uses regular expression which are very similar to those of
|
||
|
|
.Xr ex 1
|
||
|
|
and
|
||
|
|
.Xr lex 1 .
|
||
|
|
The characters `^', `$', `:' and `\e'
|
||
|
|
are reserved characters and must be
|
||
|
|
"quoted" with a preceding
|
||
|
|
.Ql \e
|
||
|
|
if they
|
||
|
|
are to be included as normal characters.
|
||
|
|
The metasymbols and their meanings are:
|
||
|
|
.Bl -tag -width indent
|
||
|
|
.It $
|
||
|
|
the end of a line
|
||
|
|
.It \&^
|
||
|
|
the beginning of a line
|
||
|
|
.It \ed
|
||
|
|
a delimiter (space, tab, newline, start of line)
|
||
|
|
.It \ea
|
||
|
|
matches any string of symbols (like .* in lex)
|
||
|
|
.It \ep
|
||
|
|
matches any alphanumeric name. In a procedure definition (pb) the string
|
||
|
|
that matches this symbol is used as the procedure name.
|
||
|
|
.It ()
|
||
|
|
grouping
|
||
|
|
.It \&|
|
||
|
|
alternation
|
||
|
|
.It ?
|
||
|
|
last item is optional
|
||
|
|
.It \ee
|
||
|
|
preceding any string means that the string will not match an
|
||
|
|
input string if the input string is preceded by an escape character (\e).
|
||
|
|
This is typically used for languages (like C) which can include the
|
||
|
|
string delimiter in a string by escaping it.
|
||
|
|
.El
|
||
|
|
.Pp
|
||
|
|
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".
|
||
|
|
.Sh 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.
|
||
|
|
.Sh FILES
|
||
|
|
.Bl -tag -width /usr/share/misc/vgrindefs -compact
|
||
|
|
.It Pa /usr/share/misc/vgrindefs
|
||
|
|
File containing terminal descriptions.
|
||
|
|
.El
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr vgrind 1 ,
|
||
|
|
.Xr troff 1
|
||
|
|
.Sh HISTORY
|
||
|
|
The
|
||
|
|
.Nm
|
||
|
|
file format appeared in
|
||
|
|
.Bx 4.2 .
|