0,0 → 1,147 |
# $NetBSD: nodetypes,v 1.9 1999/02/04 16:17:39 christos Exp $ |
# 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. |
# 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. |
# |
# @(#)nodetypes 8.2 (Berkeley) 5/4/95 |
|
# 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 |
NTOOV 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 |