294 lines
5.4 KiB
C
294 lines
5.4 KiB
C
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
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/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF */
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/* UNIX System Laboratories, Inc. */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)ksh:include/shnodes.h 1.2.4.2"
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#ifndef _SHNODES_H
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#define _SHNODES_H 1
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/*
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* UNIX shell
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* Written by David Korn
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*
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*/
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#include "stak.h"
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#include "io.h"
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#include "brkincr.h"
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/* command tree for tretyp */
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#define COMBITS 4
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#define COMMSK ((1<<COMBITS)-1)
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#define COMSCAN (01<<COMBITS)
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#define FPRS (01<<COMBITS)
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#define FINT (02<<COMBITS)
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#define FAMP (04<<COMBITS)
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#define FTMP (010<<COMBITS)
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#define FPIN (020<<COMBITS)
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#define FPOU (040<<COMBITS)
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#define FPCL (0100<<COMBITS)
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#define FCOMSUB (0200<<COMBITS)
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#define FCOOP (0400<<COMBITS)
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#define TNEGATE (01<<COMBITS)
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#define TBINARY (02<<COMBITS)
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#define TUNARY (04<<COMBITS)
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#define TPAREN (010<<COMBITS)
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#define TTEST (020<<COMBITS)
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#define TSHIFT (COMBITS+5)
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#define TCOM 0
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#define TPAR 1
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#define TFIL 2
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#define TLST 3
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#define TIF 4
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#define TWH 5
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#define TUN (TWH|COMSCAN)
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#define TTST 6
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#define TSW 7
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#define TAND 8
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#define TORF 9
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#define TFORK 10
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#define TFOR 11
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#define TSELECT (TFOR|COMSCAN)
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#define TARITH 12
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#define TTIME 13
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#define TSETIO 14
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#define TPROC 15
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struct slnod /* struct for link list of stacks */
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{
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struct slnod *slnext;
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struct slnod *slchild;
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Stak_t *slptr;
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};
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/* this node is a proforma for those that follow */
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struct trenod
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{
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int tretyp;
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struct ionod *treio;
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};
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struct dolnod
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{
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struct dolnod *dolnxt;
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int doluse;
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char *dolarg[1];
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};
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struct forknod
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{
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int forktyp;
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struct ionod *forkio;
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union anynode *forktre;
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int forkline;
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};
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struct comnod
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{
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int comtyp;
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struct ionod *comio;
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struct argnod *comarg;
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struct argnod *comset;
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struct namnod *comnamp;
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int comline;
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};
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struct ifnod
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{
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int iftyp;
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union anynode *iftre;
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union anynode *thtre;
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union anynode *eltre;
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};
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struct whnod
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{
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int whtyp;
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union anynode *whtre;
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union anynode *dotre;
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};
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struct fornod
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{
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int fortyp;
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union anynode *fortre;
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char *fornam;
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struct comnod *forlst;
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};
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struct swnod
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{
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int swtyp;
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struct argnod *swarg;
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struct regnod *swlst;
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};
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struct regnod
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{
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struct argnod *regptr;
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union anynode *regcom;
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struct regnod *regnxt;
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char regflag;
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};
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struct parnod
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{
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int partyp;
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union anynode *partre;
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};
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struct lstnod
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{
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int lsttyp;
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union anynode *lstlef;
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union anynode *lstrit;
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};
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struct procnod
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{
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int proctyp;
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int procline;
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union anynode *proctre;
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char *procnam;
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off_t procloc;
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struct slnod *procstak;
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};
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struct ionod
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{
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int iofile;
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char *ioname;
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char *iolink;
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struct ionod *ionxt;
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struct ionod *iolst;
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char *iodelim;
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};
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struct argnod
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{
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union
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{
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struct argnod *ap;
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char *cp;
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} argnxt;
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struct argnod *argchn;
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char argflag;
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char argval[4];
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};
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struct arithnod
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{
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int artyp;
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int arline;
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struct argnod *arexpr;
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};
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/* The following should evaluate to the offset of argval in argnod */
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#define ARGVAL ((unsigned)(((struct argnod*)(&sh))->argval-(char*)(&sh)))
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/* mark for peek-ahead characters */
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#define MARK 0200000
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/* legal argument flags */
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#define A_RAW 0x1 /* string needs no processing */
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#define A_MAKE 0x2 /* bit set during argument expansion */
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#define A_MAC 0x4 /* string needs macro expansion */
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#define A_EXP 0x8 /* string needs file expansion */
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#define A_SPLIT 0x10 /* string needs word splitting */
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#define A_ALIAS 0x20 /* formal alias argument */
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#define A_JOIN 0x40 /* join with next argument */
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#ifdef sgi
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/* types of ionodes */
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#define IOUFD 0x3fffff /* mask back to index in file descriptor */
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/* #if IOUFD < (nfile-1)
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* this is a failure
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* #endif
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*/
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#define IOPUT 0x400000
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#define IOAPP 0x800000
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#define IOMOV 0x1000000
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#define IODOC 0x2000000
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#define IOSTRIP 0x4000000
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#define IOCLOB 0x8000000
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#define IORDW 0x10000000
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#define IORAW 0x20000000
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#define IOSTRG 0x40000000
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#else
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/* types of ionodes */
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#define IOUFD 0x7f /* mask back to index in file descriptor */
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#if IOUFD != (NFILE-1)
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this is a failure; abort here
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#endif
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#define IOPUT 0x80
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#define IOAPP 0x100
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#define IOMOV 0x200
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#define IODOC 0x400
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#define IOSTRIP 0x800
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#define IOCLOB 0x1000
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#define IORDW 0x2000
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#define IORAW 0x4000
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#define IOSTRG 0x8000
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#endif /* sgi */
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union anynode
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{
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struct argnod arg;
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struct ionod io;
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struct whnod wh;
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struct swnod sw;
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struct ifnod if_;
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struct dolnod dol;
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struct comnod com;
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struct trenod tre;
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struct forknod fork;
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struct fornod for_;
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struct regnod reg;
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struct parnod par;
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struct lstnod lst;
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struct procnod proc;
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struct arithnod ar;
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};
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#ifdef PROTO
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extern union anynode *sh_mkfork(int,union anynode*);
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extern union anynode *sh_parse(int,int);
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extern int sh_lex(void);
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extern void sh_freeup(void);
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extern void sh_funstaks(struct slnod*,int);
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extern void sh_eval(char*);
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extern void sh_prompt(int);
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extern void sh_syntax(void);
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extern int sh_trace(char**,int);
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extern int sh_exec(union anynode*,int);
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#else
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extern union anynode *sh_mkfork();
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extern union anynode *sh_parse();
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extern int sh_lex();
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extern void sh_freeup();
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extern void sh_funstaks();
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extern void sh_eval();
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extern void sh_prompt();
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extern void sh_syntax();
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extern int sh_trace();
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extern int sh_exec();
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#endif /* PROTO */
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#endif /* _SHNODES_H */
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