File: [local] / OpenXM_contrib2 / asir2000 / parse / eval.c (download)
Revision 1.3, Thu Jul 13 05:09:03 2000 UTC (24 years, 2 months ago) by noro
Branch: MAIN
Changes since 1.2: +5 -1
lines
I'm sorry. I have to commit too many modifications at once.
Major modifications are for optimization of modular groebner base computation.
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/* $OpenXM: OpenXM_contrib2/asir2000/parse/eval.c,v 1.3 2000/07/13 05:09:03 noro Exp $ */
#include <ctype.h>
#include "ca.h"
#include "al.h"
#include "base.h"
#include "parse.h"
#if !defined(THINK_C)
#include <sys/types.h>
#include <sys/stat.h>
#endif
#if PARI
#include "genpari.h"
#endif
extern jmp_buf timer_env;
int f_break,f_return,f_continue;
int evalstatline;
int recv_intr;
pointer bevalf(), evalmapf(), evall();
Obj getopt_from_cpvs();
pointer eval(f)
FNODE f;
{
LIST t;
STRING str;
pointer val = 0;
pointer a,a1,a2;
NODE tn,ind;
R u;
DP dp;
int pv,c;
FNODE f1;
UP2 up2;
UP up;
GF2N gf2n;
GFPN gfpn;
#if defined(VISUAL)
if ( recv_intr ) {
#include <signal.h>
if ( recv_intr == 1 ) {
recv_intr = 0;
int_handler(SIGINT);
} else {
recv_intr = 0;
ox_usr1_handler(0);
}
}
#endif
if ( !f )
return ( 0 );
switch ( f->id ) {
case I_BOP:
a1 = eval((FNODE)FA1(f)); a2 = eval((FNODE)FA2(f));
(*((ARF)FA0(f))->fp)(CO,a1,a2,&val);
break;
case I_COP:
a1 = eval((FNODE)FA1(f)); a2 = eval((FNODE)FA2(f));
c = arf_comp(CO,a1,a2);
switch ( (cid)FA0(f) ) {
case C_EQ:
c = (c == 0); break;
case C_NE:
c = (c != 0); break;
case C_GT:
c = (c > 0); break;
case C_LT:
c = (c < 0); break;
case C_GE:
c = (c >= 0); break;
case C_LE:
c = (c <= 0); break;
default:
c = 0; break;
}
if ( c )
val = (pointer)ONE;
break;
case I_AND:
if ( eval((FNODE)FA0(f)) && eval((FNODE)FA1(f)) )
val = (pointer)ONE;
break;
case I_OR:
if ( eval((FNODE)FA0(f)) || eval((FNODE)FA1(f)) )
val = (pointer)ONE;
break;
case I_NOT:
if ( eval((FNODE)FA0(f)) )
val = 0;
else
val = (pointer)ONE;
break;
case I_LOP:
a1 = eval((FNODE)FA1(f)); a2 = eval((FNODE)FA2(f));
val = evall((lid)FA0(f),a1,a2);
break;
case I_CE:
if ( eval((FNODE)FA0(f)) )
val = eval((FNODE)FA1(f));
else
val = eval((FNODE)FA2(f));
break;
case I_EV:
evalnodebody((NODE)FA0(f),&tn); nodetod(tn,&dp); val = (pointer)dp;
break;
case I_FUNC:
val = evalf((FUNC)FA0(f),(FNODE)FA1(f),0); break;
case I_FUNC_OPT:
val = evalf((FUNC)FA0(f),(FNODE)FA1(f),(FNODE)FA2(f)); break;
case I_PFDERIV:
error("eval : not implemented yet");
break;
case I_MAP:
val = evalmapf((FUNC)FA0(f),(FNODE)FA1(f)); break;
case I_IFUNC:
val = evalif((FNODE)FA0(f),(FNODE)FA1(f)); break;
#if !defined(VISUAL)
case I_TIMER:
{
int interval;
Obj expired;
interval = QTOS((Q)eval((FNODE)FA0(f)));
expired = (Obj)eval((FNODE)FA2(f));
set_timer(interval);
savepvs();
if ( !setjmp(timer_env) )
val = eval((FNODE)FA1(f));
else {
val = (pointer)expired;
restorepvs();
}
reset_timer();
}
break;
#endif
#if 0
case I_PRESELF: case I_POSTSELF:
val = evalpv(f->id,FA1(f),FA0(f)); break;
case I_PVAR:
val = evalpv(f->id,FA0(f),0); break;
case I_ASSPVAR:
val = evalpv(f->id,FA0(f),FA1(f)); break;
#endif
#if 1
case I_PRESELF:
f1 = (FNODE)FA1(f);
if ( ID(f1) == I_PVAR ) {
pv = (int)FA0(f1); ind = (NODE)FA1(f1); GETPV(pv,a);
if ( !ind ) {
(*((ARF)FA0(f))->fp)(CO,a,ONE,&val); ASSPV(pv,val);
} else if ( a ) {
evalnodebody(ind,&tn); getarray(a,tn,(pointer *)&u);
(*((ARF)FA0(f))->fp)(CO,u,ONE,&val); putarray(a,tn,val);
}
} else
val = evalpv(f->id,(FNODE)FA1(f),FA0(f));
break;
case I_POSTSELF:
f1 = (FNODE)FA1(f);
if ( ID(f1) == I_PVAR ) {
pv = (int)FA0(f1); ind = (NODE)FA1(f1); GETPV(pv,val);
if ( !ind ) {
(*((ARF)FA0(f))->fp)(CO,val,ONE,&u); ASSPV(pv,u);
} else if ( val ) {
evalnodebody(ind,&tn); getarray(val,tn,&a);
(*((ARF)FA0(f))->fp)(CO,a,ONE,&u); putarray(val,tn,(pointer)u);
val = a;
}
} else
val = evalpv(f->id,(FNODE)FA1(f),FA0(f));
break;
case I_CAST:
getmember((FNODE)f,(Obj *)&val); break;
case I_PVAR:
pv = (int)FA0(f); ind = (NODE)FA1(f); GETPV(pv,a);
if ( !ind )
val = a;
else {
evalnodebody(ind,&tn); getarray(a,tn,&val);
}
break;
case I_ASSPVAR:
f1 = (FNODE)FA0(f);
if ( ID(f1) == I_PVAR ) {
pv = (int)FA0(f1); ind = (NODE)FA1(f1);
if ( !ind ) {
val = eval((FNODE)FA1(f)); ASSPV(pv,val);
} else {
GETPV(pv,a);
evalnodebody(ind,&tn);
putarray(a,tn,val = eval((FNODE)FA1(f)));
}
} else
val = evalpv(ID(f),(FNODE)FA0(f),FA1(f));
break;
#endif
case I_ANS:
if ( (pv =(int)FA0(f)) < (int)APVS->n )
val = APVS->va[pv].priv;
break;
case I_GF2NGEN:
NEWUP2(up2,1);
up2->w=1;
up2->b[0] = 2; /* @ */
MKGF2N(up2,gf2n);
val = (pointer)gf2n;
break;
case I_GFPNGEN:
up = UPALLOC(1);
up->d=1;
up->c[0] = 0;
up->c[1] = (Num)ONELM;
MKGFPN(up,gfpn);
val = (pointer)gfpn;
break;
case I_STR:
MKSTR(str,FA0(f)); val = (pointer)str; break;
case I_FORMULA:
val = FA0(f); break;
case I_LIST:
evalnodebody((NODE)FA0(f),&tn); MKLIST(t,tn); val = (pointer)t; break;
case I_NEWCOMP:
newstruct((int)FA0(f),(struct oCOMP **)&val); break;
case I_CAR:
if ( !(a = eval((FNODE)FA0(f))) || (OID(a) != O_LIST) )
val = 0;
else if ( !BDY((LIST)a) )
val = a;
else
val = (pointer)BDY(BDY((LIST)a));
break;
case I_CDR:
if ( !(a = eval((FNODE)FA0(f))) || (OID(a) != O_LIST) )
val = 0;
else if ( !BDY((LIST)a) )
val = a;
else {
MKLIST(t,NEXT(BDY((LIST)a))); val = (pointer)t;
}
break;
case I_PROC:
val = (pointer)FA0(f); break;
case I_INDEX:
a = eval((FNODE)FA0(f)); ind = (NODE)FA1(f);
evalnodebody(ind,&tn); getarray(a,tn,&val);
break;
case I_OPT:
MKSTR(str,(char *)FA0(f));
a = (pointer)eval(FA1(f));
tn = mknode(2,str,a);
MKLIST(t,tn); val = (pointer)t;
break;
case I_GETOPT:
val = (pointer)getopt_from_cpvs((char *)FA0(f));
break;
default:
error("eval : unknown id");
break;
}
return ( val );
}
pointer evalstat(f)
SNODE f;
{
pointer val = 0,t,s,s1;
P u;
NODE tn;
int i,ac;
V *a;
char *buf;
if ( !f )
return ( 0 );
if ( nextbp && nextbplevel <= 0 && f->id != S_CPLX ) {
nextbp = 0;
bp(f);
}
evalstatline = f->ln;
switch ( f->id ) {
case S_BP:
if ( !nextbp && (!FA1(f) || eval((FNODE)FA1(f))) ) {
if ( (FNODE)FA2(f) ) {
#if PARI
pari_outfile = stderr;
#endif
asir_out = stderr;
printexpr(CO,eval((FNODE)FA2(f)));
putc('\n',asir_out); fflush(asir_out);
#if PARI
pari_outfile = stdout;
#endif
asir_out = stdout;
} else {
nextbp = 1; nextbplevel = 0;
}
}
val = evalstat((SNODE)FA0(f));
break;
case S_PFDEF:
ac = argc(FA1(f)); a = (V *)MALLOC(ac*sizeof(V));
s = eval((FNODE)FA2(f));
buf = (char *)ALLOCA(BUFSIZ);
for ( i = 0, tn = (NODE)FA1(f); tn; tn = NEXT(tn), i++ ) {
t = eval((FNODE)tn->body); sprintf(buf,"_%s",NAME(VR((P)t)));
makevar(buf,&u); a[i] = VR(u);
substr(CO,0,(Obj)s,VR((P)t),(Obj)u,(Obj *)&s1); s = s1;
}
mkpf((char *)FA0(f),(Obj)s,ac,a,0,0,0,(PF *)&val); val = 0; break;
case S_SINGLE:
val = eval((FNODE)FA0(f)); break;
case S_CPLX:
for ( tn = (NODE)FA0(f); tn; tn = NEXT(tn) ) {
if ( BDY(tn) )
val = evalstat((SNODE)BDY(tn));
if ( f_break || f_return || f_continue )
break;
}
break;
case S_BREAK:
if ( GPVS != CPVS )
f_break = 1;
break;
case S_CONTINUE:
if ( GPVS != CPVS )
f_continue = 1;
break;
case S_RETURN:
if ( GPVS != CPVS ) {
val = eval((FNODE)FA0(f)); f_return = 1;
}
break;
case S_IFELSE:
if ( evalnode((NODE)FA1(f)) )
val = evalstat((SNODE)FA2(f));
else if ( FA3(f) )
val = evalstat((SNODE)FA3(f));
break;
case S_FOR:
evalnode((NODE)FA1(f));
while ( 1 ) {
if ( !evalnode((NODE)FA2(f)) )
break;
val = evalstat((SNODE)FA4(f));
if ( f_break || f_return )
break;
f_continue = 0;
evalnode((NODE)FA3(f));
}
f_break = 0; break;
case S_DO:
while ( 1 ) {
val = evalstat((SNODE)FA1(f));
if ( f_break || f_return )
break;
f_continue = 0;
if ( !evalnode((NODE)FA2(f)) )
break;
}
f_break = 0; break;
default:
error("evalstat : unknown id");
break;
}
return ( val );
}
pointer evalnode(node)
NODE node;
{
NODE tn;
pointer val;
for ( tn = node, val = 0; tn; tn = NEXT(tn) )
if ( BDY(tn) )
val = eval((FNODE)BDY(tn));
return ( val );
}
extern FUNC cur_binf;
extern NODE PVSS;
pointer evalf(f,a,opt)
FUNC f;
FNODE a;
FNODE opt;
{
LIST args;
pointer val;
int i,n,level;
NODE tn,sn,opts;
VS pvs;
char errbuf[BUFSIZ];
if ( f->id == A_UNDEF ) {
sprintf(errbuf,"evalf : %s undefined",NAME(f));
error(errbuf);
}
if ( f->id != A_PARI ) {
for ( i = 0, tn = a?(NODE)FA0(a):0; tn; i++, tn = NEXT(tn) );
if ( ((n = f->argc)>= 0 && i != n) || (n < 0 && i > -n) ) {
sprintf(errbuf,"evalf : argument mismatch in %s()",NAME(f));
error(errbuf);
}
}
switch ( f->id ) {
case A_BIN:
if ( !n ) {
cur_binf = f;
(*f->f.binf)(&val);
} else {
args = (LIST)eval(a);
cur_binf = f;
(*f->f.binf)(args?BDY(args):0,&val);
}
cur_binf = 0;
break;
case A_PARI:
args = (LIST)eval(a);
cur_binf = f;
val = evalparif(f,args?BDY(args):0);
cur_binf = 0;
break;
case A_USR:
args = (LIST)eval(a);
if ( opt )
opts = BDY((LIST)eval(opt));
else
opts = 0;
pvs = f->f.usrf->pvs;
if ( PVSS ) {
((VS)BDY(PVSS))->at = evalstatline;
level = ((VS)BDY(PVSS))->level+1;
} else
level = 1;
MKNODE(tn,pvs,PVSS); PVSS = tn;
CPVS = (VS)ALLOCA(sizeof(struct oVS)); BDY(PVSS) = (pointer)CPVS;
CPVS->usrf = f; CPVS->n = CPVS->asize = pvs->n;
CPVS->level = level;
CPVS->opt = opts;
if ( CPVS->n ) {
CPVS->va = (struct oPV *)ALLOCA(CPVS->n*sizeof(struct oPV));
bcopy((char *)pvs->va,(char *)CPVS->va,
(int)(pvs->n*sizeof(struct oPV)));
}
if ( nextbp )
nextbplevel++;
for ( tn = f->f.usrf->args, sn = BDY(args);
sn; tn = NEXT(tn), sn = NEXT(sn) )
ASSPV((int)FA0((FNODE)BDY(tn)),BDY(sn));
val = evalstat((SNODE)BDY(f->f.usrf));
f_return = f_break = f_continue = 0; poppvs();
break;
case A_PURE:
args = (LIST)eval(a);
val = evalpf(f->f.puref,args?BDY(args):0);
break;
default:
sprintf(errbuf,"evalf : %s undefined",NAME(f));
error(errbuf);
break;
}
return val;
}
pointer evalmapf(f,a)
FUNC f;
FNODE a;
{
LIST args;
NODE node,rest,t,n,r,r0;
Obj head;
VECT v,rv;
MAT m,rm;
LIST rl;
int len,row,col,i,j;
pointer val;
args = (LIST)eval(a);
node = BDY(args); head = (Obj)BDY(node); rest = NEXT(node);
if ( !head ) {
val = bevalf(f,node);
return val;
}
switch ( OID(head) ) {
case O_VECT:
v = (VECT)head; len = v->len; MKVECT(rv,len);
for ( i = 0; i < len; i++ ) {
MKNODE(t,BDY(v)[i],rest); BDY(rv)[i] = bevalf(f,t);
}
val = (pointer)rv;
break;
case O_MAT:
m = (MAT)head; row = m->row; col = m->col; MKMAT(rm,row,col);
for ( i = 0; i < row; i++ )
for ( j = 0; j < col; j++ ) {
MKNODE(t,BDY(m)[i][j],rest); BDY(rm)[i][j] = bevalf(f,t);
}
val = (pointer)rm;
break;
case O_LIST:
n = BDY((LIST)head);
for ( r0 = r = 0; n; n = NEXT(n) ) {
NEXTNODE(r0,r); MKNODE(t,BDY(n),rest); BDY(r) = bevalf(f,t);
}
if ( r0 )
NEXT(r) = 0;
MKLIST(rl,r0);
val = (pointer)rl;
break;
default:
val = bevalf(f,node);
break;
}
return val;
}
pointer bevalf(f,a)
FUNC f;
NODE a;
{
pointer val;
int i,n;
NODE tn,sn;
VS pvs;
struct oLIST list;
struct oFNODE fnode;
char errbuf[BUFSIZ];
if ( f->id == A_UNDEF ) {
sprintf(errbuf,"bevalf : %s undefined",NAME(f));
error(errbuf);
}
if ( f->id != A_PARI ) {
for ( i = 0, tn = a; tn; i++, tn = NEXT(tn) );
if ( ((n = f->argc)>= 0 && i != n) || (n < 0 && i > -n) ) {
sprintf(errbuf,"bevalf : argument mismatch in %s()",NAME(f));
error(errbuf);
}
}
switch ( f->id ) {
case A_BIN:
if ( !n ) {
cur_binf = f;
(*f->f.binf)(&val);
} else {
cur_binf = f;
(*f->f.binf)(a,&val);
}
cur_binf = 0;
break;
case A_PARI:
cur_binf = f;
val = evalparif(f,a);
cur_binf = 0;
break;
case A_USR:
pvs = f->f.usrf->pvs;
if ( PVSS )
((VS)BDY(PVSS))->at = evalstatline;
MKNODE(tn,pvs,PVSS); PVSS = tn;
CPVS = (VS)ALLOCA(sizeof(struct oVS)); BDY(PVSS) = (pointer)CPVS;
CPVS->usrf = f; CPVS->n = CPVS->asize = pvs->n;
CPVS->opt = 0;
if ( CPVS->n ) {
CPVS->va = (struct oPV *)ALLOCA(CPVS->n*sizeof(struct oPV));
bcopy((char *)pvs->va,(char *)CPVS->va,
(int)(pvs->n*sizeof(struct oPV)));
}
if ( nextbp )
nextbplevel++;
for ( tn = f->f.usrf->args, sn = a;
sn; tn = NEXT(tn), sn = NEXT(sn) )
ASSPV((int)FA0((FNODE)BDY(tn)),BDY(sn));
val = evalstat((SNODE)BDY(f->f.usrf));
f_return = f_break = f_continue = 0; poppvs();
break;
case A_PURE:
val = evalpf(f->f.puref,a);
break;
default:
sprintf(errbuf,"bevalf : %s undefined",NAME(f));
error(errbuf);
break;
}
return val;
}
pointer evalif(f,a)
FNODE f,a;
{
Obj g;
g = (Obj)eval(f);
if ( g && (OID(g) == O_P) && (VR((P)g)->attr == (pointer)V_SR) )
return evalf((FUNC)VR((P)g)->priv,a,0);
else {
error("invalid function pointer");
}
}
pointer evalpf(pf,args)
PF pf;
NODE args;
{
Obj s,s1;
int i;
NODE node;
PFINS ins;
PFAD ad;
char errbuf[BUFSIZ];
if ( !pf->body ) {
ins = (PFINS)CALLOC(1,sizeof(PF)+pf->argc*sizeof(struct oPFAD));
ins->pf = pf;
for ( i = 0, node = args, ad = ins->ad;
node; node = NEXT(node), i++ ) {
ad[i].d = 0; ad[i].arg = (Obj)node->body;
}
simplify_ins(ins,&s);
} else {
for ( i = 0, s = pf->body, node = args;
node; node = NEXT(node), i++ ) {
substr(CO,0,s,pf->args[i],(Obj)node->body,&s1); s = s1;
}
}
return (pointer)s;
}
void evalnodebody(sn,dnp)
NODE sn;
NODE *dnp;
{
NODE n,n0,tn;
int line;
if ( !sn ) {
*dnp = 0;
return;
}
line = evalstatline;
for ( tn = sn, n0 = 0; tn; tn = NEXT(tn) ) {
NEXTNODE(n0,n);
BDY(n) = eval((FNODE)BDY(tn));
evalstatline = line;
}
NEXT(n) = 0; *dnp = n0;
}
void searchf(fn,name,r)
NODE fn;
char *name;
FUNC *r;
{
NODE tn;
for ( tn = fn;
tn && strcmp(NAME((FUNC)BDY(tn)),name); tn = NEXT(tn) );
if ( tn ) {
*r = (FUNC)BDY(tn);
return;
}
*r = 0;
}
void appenduf(name,r)
char *name;
FUNC *r;
{
NODE tn;
FUNC f;
f=(FUNC)MALLOC(sizeof(struct oFUNC));
f->name = name; f->id = A_UNDEF; f->argc = 0; f->f.binf = 0;
MKNODE(tn,f,usrf); usrf = tn;
*r = f;
}
void mkparif(name,r)
char *name;
FUNC *r;
{
FUNC f;
*r = f =(FUNC)MALLOC(sizeof(struct oFUNC));
f->name = name; f->id = A_PARI; f->argc = 0; f->f.binf = 0;
}
void mkuf(name,fname,args,body,startl,endl,desc)
char *name,*fname;
NODE args;
SNODE body;
int startl,endl;
char *desc;
{
FUNC f;
USRF t;
NODE sn,tn;
FNODE fn;
int argc;
searchf(sysf,name,&f);
if ( f ) {
fprintf(stderr,"def : builtin function %s() cannot be redefined.\n",name);
CPVS = GPVS; return;
}
for ( argc = 0, sn = args; sn; argc++, sn = NEXT(sn) ) {
fn = (FNODE)BDY(sn);
if ( !fn || ID(fn) != I_PVAR ) {
fprintf(stderr,"illegal argument in %s()\n",name);
CPVS = GPVS; return;
}
}
for ( sn = usrf; sn && strcmp(NAME((FUNC)BDY(sn)),name); sn = NEXT(sn) );
if ( sn )
f = (FUNC)BDY(sn);
else {
f=(FUNC)MALLOC(sizeof(struct oFUNC));
f->name = name;
MKNODE(tn,f,usrf); usrf = tn;
}
if ( Verbose && f->id != A_UNDEF )
fprintf(stderr,"Warning : %s() redefined.\n",name);
/* else
fprintf(stderr,"%s() defined.\n",name); */
t=(USRF)MALLOC(sizeof(struct oUSRF));
t->args=args; BDY(t)=body; t->pvs = CPVS; t->fname = fname;
t->startl = startl; t->endl = endl; t->vol = asir_infile->vol;
t->desc = desc;
f->id = A_USR; f->argc = argc; f->f.usrf = t;
CPVS = GPVS;
clearbp(f);
}
/*
retrieve value of an option whose key matches 'key'
CVS->opt is a list(node) of key-value pair (list)
CVS->opt = BDY([[key,value],[key,value],...])
*/
Obj getopt_from_cpvs(key)
char *key;
{
NODE opts,opt;
Obj value;
extern Obj VOIDobj;
opts = CPVS->opt;
for ( ; opts; opts = NEXT(opts) ) {
opt = BDY((LIST)BDY(opts));
if ( !strcmp(key,BDY((STRING)BDY(opt))) )
return (Obj)BDY(NEXT(opt));
}
return VOIDobj;
}