ack/lang/fortran/comp/data.c

/****************************************************************
Copyright 1990 by AT&T Bell Laboratories and Bellcore.

Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the names of AT&T Bell Laboratories or
Bellcore or any of their entities not be used in advertising or
publicity pertaining to distribution of the software without
specific, written prior permission.

AT&T and Bellcore disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness.  In no event shall AT&T or Bellcore be liable for
any special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
****************************************************************/

#include "defs.h"

/* ROUTINES CALLED DURING DATA AND PARAMETER STATEMENT PROCESSING */

static char datafmt[] = "%s\t%09ld\t%d";
static char *cur_varname;

/* another initializer, called from parser */
dataval(repp, valp)
register expptr repp, valp;
{
	int i, nrep;
	ftnint elen;
	register Addrp p;
	Addrp nextdata();

	if (parstate < INDATA) {
		frexpr(repp);
		goto ret;
		}
	if(repp == NULL)
		nrep = 1;
	else if (ISICON(repp) && repp->constblock.Const.ci >= 0)
		nrep = repp->constblock.Const.ci;
	else
	{
		err("invalid repetition count in DATA statement");
		frexpr(repp);
		goto ret;
	}
	frexpr(repp);

	if( ! ISCONST(valp) )
	{
		err("non-constant initializer");
		goto ret;
	}

	if(toomanyinit) goto ret;
	for(i = 0 ; i < nrep ; ++i)
	{
		p = nextdata(&elen);
		if(p == NULL)
		{
			err("too many initializers");
			toomanyinit = YES;
			goto ret;
		}
		setdata((Addrp)p, (Constp)valp, elen);
		frexpr((expptr)p);
	}

ret:
	frexpr(valp);
}


Addrp nextdata(elenp)
ftnint *elenp;
{
	register struct Impldoblock *ip;
	struct Primblock *pp;
	register Namep np;
	register struct Rplblock *rp;
	tagptr p;
	expptr neltp;
	register expptr q;
	int skip;
	ftnint off, vlen;

	while(curdtp)
	{
		p = (tagptr)curdtp->datap;
		if(p->tag == TIMPLDO)
		{
			ip = &(p->impldoblock);
			if(ip->implb==NULL || ip->impub==NULL || ip->varnp==NULL)
				fatali("bad impldoblock 0%o", (int) ip);
			if(ip->isactive)
				ip->varvp->Const.ci += ip->impdiff;
			else
			{
				q = fixtype(cpexpr(ip->implb));
				if( ! ISICON(q) )
					goto doerr;
				ip->varvp = (Constp) q;

				if(ip->impstep)
				{
					q = fixtype(cpexpr(ip->impstep));
					if( ! ISICON(q) )
						goto doerr;
					ip->impdiff = q->constblock.Const.ci;
					frexpr(q);
				}
				else
					ip->impdiff = 1;

				q = fixtype(cpexpr(ip->impub));
				if(! ISICON(q))
					goto doerr;
				ip->implim = q->constblock.Const.ci;
				frexpr(q);

				ip->isactive = YES;
				rp = ALLOC(Rplblock);
				rp->rplnextp = rpllist;
				rpllist = rp;
				rp->rplnp = ip->varnp;
				rp->rplvp = (expptr) (ip->varvp);
				rp->rpltag = TCONST;
			}

			if( (ip->impdiff>0 && (ip->varvp->Const.ci <= ip->implim))
			    || (ip->impdiff<0 && (ip->varvp->Const.ci >= ip->implim)) )
			{ /* start new loop */
				curdtp = ip->datalist;
				goto next;
			}

			/* clean up loop */

			if(rpllist)
			{
				rp = rpllist;
				rpllist = rpllist->rplnextp;
				free( (charptr) rp);
			}
			else
				Fatal("rpllist empty");

			frexpr((expptr)ip->varvp);
			ip->isactive = NO;
			curdtp = curdtp->nextp;
			goto next;
		}

		pp = (struct Primblock *) p;
		np = pp->namep;
		cur_varname = np->fvarname;
		skip = YES;

		if(p->primblock.argsp==NULL && np->vdim!=NULL)
		{   /* array initialization */
			q = (expptr) mkaddr(np);
			off = typesize[np->vtype] * curdtelt;
			if(np->vtype == TYCHAR)
				off *= np->vleng->constblock.Const.ci;
			q->addrblock.memoffset =
			    mkexpr(OPPLUS, q->addrblock.memoffset, mkintcon(off) );
			if( (neltp = np->vdim->nelt) && ISCONST(neltp))
			{
				if(++curdtelt < neltp->constblock.Const.ci)
					skip = NO;
			}
			else
				err("attempt to initialize adjustable array");
		}
		else
			q = mklhs( (struct Primblock *)cpexpr((expptr)pp) );
		if(skip)
		{
			curdtp = curdtp->nextp;
			curdtelt = 0;
		}
		if(q->headblock.vtype == TYCHAR)
			if(ISICON(q->headblock.vleng))
				*elenp = q->headblock.vleng->constblock.Const.ci;
			else	{
				err("initialization of string of nonconstant length");
				continue;
			}
		else	*elenp = typesize[q->headblock.vtype];

		if (np->vstg == STGBSS) {
			vlen = np->vtype==TYCHAR
				? np->vleng->constblock.Const.ci
				: typesize[np->vtype];
			if(vlen > 0)
				np->vstg = STGINIT;
			}
		return( (Addrp) q );

doerr:
		err("nonconstant implied DO parameter");
		frexpr(q);
		curdtp = curdtp->nextp;

next:
		curdtelt = 0;
	}

	return(NULL);
}



LOCAL FILEP dfile;


setdata(varp, valp, elen)
register Addrp varp;
ftnint elen;
register Constp valp;
{
	struct Constblock con;
	register int type;
	int i, k, valtype;
	ftnint offset;
	char *dataname(), *varname;
	static Addrp badvar;
	register unsigned char *s;
	static int last_lineno;
	static char *last_varname;

	if (varp->vstg == STGCOMMON) {
		if (!(dfile = blkdfile))
			dfile = blkdfile = opf(blkdfname, textwrite);
		}
	else {
		if (procclass == CLBLOCK) {
			if (varp != badvar) {
				badvar = varp;
				warn1("%s is not in a COMMON block",
					varp->uname_tag == UNAM_NAME
					? varp->user.name->fvarname
					: "???");
				}
			return;
			}
		if (!(dfile = initfile))
			dfile = initfile = opf(initfname, textwrite);
		}
	varname = dataname(varp->vstg, varp->memno);
	offset = varp->memoffset->constblock.Const.ci;
	type = varp->vtype;
	valtype = valp->vtype;
	if(type!=TYCHAR && valtype==TYCHAR)
	{
		if(! ftn66flag
		&& (last_varname != cur_varname || last_lineno != lineno)) {
			/* prevent multiple warnings */
			last_lineno = lineno;
			warn1(
	"non-character datum %.42s initialized with character string",
				last_varname = cur_varname);
			}
		varp->vleng = ICON(typesize[type]);
		varp->vtype = type = TYCHAR;
	}
	else if( (type==TYCHAR && valtype!=TYCHAR) ||
	    (cktype(OPASSIGN,type,valtype) == TYERROR) )
	{
		err("incompatible types in initialization");
		return;
	}
	if(type == TYADDR)
		con.Const.ci = valp->Const.ci;
	else if(type != TYCHAR)
	{
		if(valtype == TYUNKNOWN)
			con.Const.ci = valp->Const.ci;
		else	consconv(type, &con, valp);
	}

	k = 1;

	switch(type)
	{
	case TYLOGICAL:
		if (tylogical != TYLONG)
			type = tylogical;
	case TYSHORT:
	case TYLONG:
		dataline(varname, offset, type);
		prconi(dfile, con.Const.ci);
		break;

	case TYADDR:
		dataline(varname, offset, type);
		prcona(dfile, con.Const.ci);
		break;

	case TYCOMPLEX:
	case TYDCOMPLEX:
		k = 2;
	case TYREAL:
	case TYDREAL:
		dataline(varname, offset, type);
		prconr(dfile, &con, k);
		break;

	case TYCHAR:
		k = valp -> vleng -> constblock.Const.ci;
		if (elen < k)
			k = elen;
		s = (unsigned char *)valp->Const.ccp;
		for(i = 0 ; i < k ; ++i) {
			dataline(varname, offset++, TYCHAR);
			fprintf(dfile, "\t%d\n", *s++);
			}
		k = elen - valp->vleng->constblock.Const.ci;
		if(k > 0) {
			dataline(varname, offset, TYBLANK);
			fprintf(dfile, "\t%d\n", k);
			}
		break;

	default:
		badtype("setdata", type);
	}

}



/*
   output form of name is padded with blanks and preceded
   with a storage class digit
*/
char *dataname(stg,memno)
 int stg;
 long memno;
{
	static char varname[64];
	register char *s, *t;
	char buf[16], *memname();

	if (stg == STGCOMMON) {
		varname[0] = '2';
		sprintf(s = buf, "Q.%ld", memno);
		}
	else {
		varname[0] = stg==STGEQUIV ? '1' : '0';
		s = memname(stg, memno);
		}
	t = varname + 1;
	while(*t++ = *s++);
	*t = 0;
	return(varname);
}





frdata(p0)
chainp p0;
{
	register struct Chain *p;
	register tagptr q;

	for(p = p0 ; p ; p = p->nextp)
	{
		q = (tagptr)p->datap;
		if(q->tag == TIMPLDO)
		{
			if(q->impldoblock.isbusy)
				return;	/* circular chain completed */
			q->impldoblock.isbusy = YES;
			frdata(q->impldoblock.datalist);
			free( (charptr) q);
		}
		else
			frexpr(q);
	}

	frchain( &p0);
}



dataline(varname, offset, type)
char *varname;
ftnint offset;
int type;
{
	fprintf(dfile, datafmt, varname, offset, type);
}

 void
make_param(p, e)
 register struct Paramblock *p;
 expptr e;
{
	register expptr q;

	p->vclass = CLPARAM;
	impldcl((Namep)p);
	p->paramval = q = mkconv(p->vtype, e);
	if (p->vtype == TYCHAR) {
		if (q->tag == TEXPR)
			p->paramval = q = fixexpr(q);
		if (!ISCONST(q) || q->constblock.vtype != TYCHAR) {
			errstr("invalid value for character parameter %s",
				p->fvarname);
			return;
			}
		if (!(e = p->vleng))
			p->vleng = ICON(q->constblock.vleng->constblock.Const.ci
					+ q->constblock.Const.ccp1.blanks);
		else if (q->constblock.vleng->constblock.Const.ci
				> e->constblock.Const.ci) {
			q->constblock.vleng->constblock.Const.ci
				= e->constblock.Const.ci;
			q->constblock.Const.ccp1.blanks = 0;
			}
		else
			q->constblock.Const.ccp1.blanks
				= e->constblock.Const.ci
				- q->constblock.vleng->constblock.Const.ci;
		}
	}