148 lines
5.1 KiB
Plaintext
Executable File
148 lines
5.1 KiB
Plaintext
Executable File
#
|
|
# Copyright (c) 1991, 1993
|
|
# The Regents of the University of California. All rights reserved.
|
|
#
|
|
# This code is derived from software contributed to Berkeley by
|
|
# Kenneth Almquist.
|
|
#
|
|
# 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.
|
|
# 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.
|
|
#
|
|
# @(#)nodetypes 8.2 (Berkeley) 5/4/95
|
|
# $FreeBSD: src/bin/sh/nodetypes,v 1.9 2004/04/06 20:06:51 markm Exp $
|
|
|
|
# This file describes the nodes used in parse trees. Unindented lines
|
|
# contain a node type followed by a structure tag. Subsequent indented
|
|
# lines specify the fields of the structure. Several node types can share
|
|
# the same structure, in which case the fields of the structure should be
|
|
# specified only once.
|
|
#
|
|
# A field of a structure is described by the name of the field followed
|
|
# by a type. The currently implemented types are:
|
|
# nodeptr - a pointer to a node
|
|
# nodelist - a pointer to a list of nodes
|
|
# string - a pointer to a nul terminated string
|
|
# int - an integer
|
|
# other - any type that can be copied by assignment
|
|
# temp - a field that doesn't have to be copied when the node is copied
|
|
# The last two types should be followed by the text of a C declaration for
|
|
# the field.
|
|
|
|
NSEMI nbinary # two commands separated by a semicolon
|
|
type int
|
|
ch1 nodeptr # the first child
|
|
ch2 nodeptr # the second child
|
|
|
|
NCMD ncmd # a simple command
|
|
type int
|
|
backgnd int # set to run command in background
|
|
args nodeptr # the arguments
|
|
redirect nodeptr # list of file redirections
|
|
|
|
NPIPE npipe # a pipeline
|
|
type int
|
|
backgnd int # set to run pipeline in background
|
|
cmdlist nodelist # the commands in the pipeline
|
|
|
|
NREDIR nredir # redirection (of a compex command)
|
|
type int
|
|
n nodeptr # the command
|
|
redirect nodeptr # list of file redirections
|
|
|
|
NBACKGND nredir # run command in background
|
|
NSUBSHELL nredir # run command in a subshell
|
|
|
|
NAND nbinary # the && operator
|
|
NOR nbinary # the || operator
|
|
|
|
NIF nif # the if statement. Elif clauses are handled
|
|
type int # using multiple if nodes.
|
|
test nodeptr # if test
|
|
ifpart nodeptr # then ifpart
|
|
elsepart nodeptr # else elsepart
|
|
|
|
NWHILE nbinary # the while statement. First child is the test
|
|
NUNTIL nbinary # the until statement
|
|
|
|
NFOR nfor # the for statement
|
|
type int
|
|
args nodeptr # for var in args
|
|
body nodeptr # do body; done
|
|
var string # the for variable
|
|
|
|
NCASE ncase # a case statement
|
|
type int
|
|
expr nodeptr # the word to switch on
|
|
cases nodeptr # the list of cases (NCLIST nodes)
|
|
|
|
NCLIST nclist # a case
|
|
type int
|
|
next nodeptr # the next case in list
|
|
pattern nodeptr # list of patterns for this case
|
|
body nodeptr # code to execute for this case
|
|
|
|
|
|
NDEFUN narg # define a function. The "next" field contains
|
|
# the body of the function.
|
|
|
|
NARG narg # represents a word
|
|
type int
|
|
next nodeptr # next word in list
|
|
text string # the text of the word
|
|
backquote nodelist # list of commands in back quotes
|
|
|
|
NTO nfile # fd> fname
|
|
NFROM nfile # fd< fname
|
|
NFROMTO nfile # fd<> fname
|
|
NAPPEND nfile # fd>> fname
|
|
NCLOBBER nfile # fd>| fname
|
|
type int
|
|
next nodeptr # next redirection in list
|
|
fd int # file descriptor being redirected
|
|
fname nodeptr # file name, in a NARG node
|
|
expfname temp char *expfname # actual file name
|
|
|
|
NTOFD ndup # fd<&dupfd
|
|
NFROMFD ndup # fd>&dupfd
|
|
type int
|
|
next nodeptr # next redirection in list
|
|
fd int # file descriptor being redirected
|
|
dupfd int # file descriptor to duplicate
|
|
vname nodeptr # file name if fd>&$var
|
|
|
|
|
|
NHERE nhere # fd<<\!
|
|
NXHERE nhere # fd<<!
|
|
type int
|
|
next nodeptr # next redirection in list
|
|
fd int # file descriptor being redirected
|
|
doc nodeptr # input to command (NARG node)
|
|
|
|
NNOT nnot # ! command (actually pipeline)
|
|
type int
|
|
com nodeptr
|
|
|
|
#
|
|
# $PchId: nodetypes,v 1.3 2006/03/29 15:43:35 philip Exp $
|