===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/parse/eval.c,v
retrieving revision 1.18
retrieving revision 1.24
diff -u -p -r1.18 -r1.24
--- OpenXM_contrib2/asir2000/parse/eval.c	2001/12/25 02:39:06	1.18
+++ OpenXM_contrib2/asir2000/parse/eval.c	2003/05/16 07:56:16	1.24
@@ -45,7 +45,7 @@
  * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
  * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
  *
- * $OpenXM: OpenXM_contrib2/asir2000/parse/eval.c,v 1.17 2001/12/21 08:23:15 noro Exp $ 
+ * $OpenXM: OpenXM_contrib2/asir2000/parse/eval.c,v 1.23 2003/05/14 09:18:38 noro Exp $ 
 */
 #include <ctype.h>
 #include "ca.h"
@@ -54,7 +54,7 @@
 #include "parse.h"
 #include <sys/types.h>
 #include <sys/stat.h>
-#if PARI
+#if defined(PARI)
 #include "genpari.h"
 #endif
 
@@ -63,6 +63,7 @@ extern JMP_BUF timer_env;
 int f_break,f_return,f_continue;
 int evalstatline;
 int recv_intr;
+int show_crossref;
 
 pointer eval(FNODE f)
 {
@@ -73,7 +74,8 @@ pointer eval(FNODE f)
 	NODE tn,ind;
 	R u;
 	DP dp;
-	int pv,c;
+	unsigned int pv;
+	int c;
 	FNODE f1;
 	UP2 up2;
 	UP up;
@@ -195,7 +197,7 @@ pointer eval(FNODE f)
 		case I_PRESELF:
 			f1 = (FNODE)FA1(f);
 			if ( ID(f1) == I_PVAR ) {
-				pv = (int)FA0(f1); ind = (NODE)FA1(f1); GETPV(pv,a); 
+				pv = (unsigned 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 ) {
@@ -208,7 +210,7 @@ pointer eval(FNODE f)
 		case I_POSTSELF:
 			f1 = (FNODE)FA1(f);
 			if ( ID(f1) == I_PVAR ) {
-				pv = (int)FA0(f1); ind = (NODE)FA1(f1); GETPV(pv,val); 
+				pv = (unsigned 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 ) {
@@ -220,7 +222,7 @@ pointer eval(FNODE f)
 				error("-- : not implemented yet");
 			break;
 		case I_PVAR:
-			pv = (int)FA0(f); ind = (NODE)FA1(f); GETPV(pv,a); 
+			pv = (unsigned int)FA0(f); ind = (NODE)FA1(f); GETPV(pv,a); 
 			if ( !ind )
 				val = a;
 			else {
@@ -230,7 +232,7 @@ pointer eval(FNODE f)
 		case I_ASSPVAR:
 			f1 = (FNODE)FA0(f);
 			if ( ID(f1) == I_PVAR ) {
-				pv = (int)FA0(f1); ind = (NODE)FA1(f1);
+				pv = (unsigned int)FA0(f1); ind = (NODE)FA1(f1);
 				if ( !ind ) {
 					val = eval((FNODE)FA1(f)); ASSPV(pv,val);
 				} else {
@@ -350,13 +352,13 @@ pointer evalstat(SNODE f)
 		case S_BP:
 			if ( !nextbp && (!FA1(f) || eval((FNODE)FA1(f))) ) {
 				if ( (FNODE)FA2(f) ) {
-#if PARI
+#if defined(PARI)
 					pari_outfile = stderr;
 #endif
 					asir_out = stderr;
 					printexpr(CO,eval((FNODE)FA2(f)));
 					putc('\n',asir_out); fflush(asir_out);
-#if PARI
+#if defined(PARI)
 					pari_outfile = stdout;
 #endif
 					asir_out = stdout;
@@ -454,9 +456,9 @@ pointer evalf(FUNC f,FNODE a,FNODE opt)
 	pointer val;
 	int i,n,level;
 	NODE tn,sn,opts,opt1;
-    VS pvs;
+    VS pvs,prev_mpvs;
 	char errbuf[BUFSIZ];
-	static int stack_size;
+	static unsigned int stack_size;
 	static void *stack_base;
 
 	if ( f->id == A_UNDEF ) {
@@ -537,7 +539,13 @@ pointer evalf(FUNC f,FNODE a,FNODE opt)
 			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)); 
+			if ( f->f.usrf->module ) {
+				prev_mpvs = MPVS;
+				MPVS = f->f.usrf->module->pvs;
+				val = evalstat((SNODE)BDY(f->f.usrf)); 
+				MPVS = prev_mpvs;
+			} else
+				val = evalstat((SNODE)BDY(f->f.usrf)); 
 			f_return = f_break = f_continue = 0; poppvs(); 
 			break;
 		case A_PURE:
@@ -784,19 +792,93 @@ void evalnodebody(NODE sn,NODE *dnp)
 	NEXT(n) = 0; *dnp = n0;
 }
 
+MODULE searchmodule(char *name)
+{
+	MODULE mod;
+	NODE m;
+
+	for ( m = MODULE_LIST; m; m = NEXT(m) ) {
+		mod = (MODULE)BDY(m);
+		if ( !strcmp(mod->name,name) )
+			return mod;
+	}
+	return 0;
+}
+/*
+ * xxx.yyy() is searched in the flist 
+ * of the module xxx.
+ * yyy() is searched in the global flist.
+ */
+
+void searchuf(char *name,FUNC *r)
+{
+	MODULE mod;
+	char *name0,*dot;
+
+	if ( dot = strchr(name,'.') ) {
+		name0 = (char *)ALLOCA(strlen(name)+1);
+		strcpy(name0,name);
+		dot = strchr(name0,'.');
+		*dot = 0;
+		mod = searchmodule(name0);
+		if ( mod )
+			searchf(mod->usrf_list,dot+1,r);
+	} else
+		searchf(usrf,name,r);
+}
+
+/*
+ * xxx.yyy() is searched in the flist 
+ * of the module xxx.
+ * yyy() is searched in the current flist
+ * and proto list.
+ */
+
+void searchuf_proto(char *name,FUNC *r)
+{
+	MODULE mod;
+	char *name0,*dot;
+
+	if ( dot = strchr(name,'.') ) {
+		name0 = (char *)ALLOCA(strlen(name)+1);
+		strcpy(name0,name);
+		dot = strchr(name0,'.');
+		*dot = 0;
+		mod = searchmodule(name0);
+		if ( mod )
+			searchf(mod->usrf_list,dot+1,r);
+	} else if ( CUR_MODULE )
+		searchf(CUR_MODULE->proto_list,name,r);
+}
+
 void gen_searchf(char *name,FUNC *r)
 {
-	FUNC val;
+	FUNC val = 0;
 
-	searchf(sysf,name,&val);
-	if ( !val )
-		searchf(ubinf,name,&val);
-	if ( !val )
-		searchpf(name,&val);
-	if ( !val )
-		searchf(usrf,name,&val);
-	if ( !val )
-		appenduf(name,&val);
+	if ( CUR_MODULE ) {
+		searchf(CUR_MODULE->usrf_list,name,&val);
+		if ( !val )
+			searchf(sysf,name,&val);
+		if ( !val )
+			searchf(ubinf,name,&val);
+		if ( !val )
+			searchpf(name,&val);
+		if ( !val )
+			searchuf_proto(name,&val);
+		if ( !val )
+			appenduf(name,&val);
+	} else {
+		if ( !val )
+			searchf(sysf,name,&val);
+		if ( !val )
+			searchf(ubinf,name,&val);
+		if ( !val )
+			searchpf(name,&val);
+		if ( !val )
+			searchuf(name,&val);
+		if ( !val )
+			appenduf(name,&val);
+	}
 	*r = val;
 }
 
@@ -813,13 +895,47 @@ void searchf(NODE fn,char *name,FUNC *r)
 	*r = 0;
 }
 
+MODULE mkmodule(char *);
+
 void appenduf(char *name,FUNC *r)
 {
 	NODE tn;
 	FUNC f;
+	int len;
+	MODULE mod;
+	char *modname,*fname,*dot;
 
 	f=(FUNC)MALLOC(sizeof(struct oFUNC)); 
-	f->name = name; f->id = A_UNDEF; f->argc = 0; f->f.binf = 0;
+	f->id = A_UNDEF; f->argc = 0; f->f.binf = 0;
+	if ( dot = strchr(name,'.') ) {
+		/* undefined function in undefined module */
+		len = dot-name;
+		modname = (char *)MALLOC_ATOMIC(len+1);
+		strncpy(modname,name,len); modname[len] = 0;
+		mod = mkmodule(modname);
+		fname = (char *)MALLOC_ATOMIC(strlen(name)-len+1);
+		strcpy(fname,dot+1);
+		f->name = fname;
+		MKNODE(mod->usrf_list,f,0);
+	} else {
+		f->name = name; 
+		if ( CUR_MODULE ) {
+			MKNODE(tn,f,CUR_MODULE->usrf_list); CUR_MODULE->usrf_list = tn;
+		} else {
+			MKNODE(tn,f,usrf); usrf = tn;
+		}
+	}
+	*r = f;
+}
+
+void appenduf_global(char *name,FUNC *r)
+{
+	NODE tn;
+	FUNC f;
+
+	f=(FUNC)MALLOC(sizeof(struct oFUNC)); 
+	f->id = A_UNDEF; f->argc = 0; f->f.binf = 0;
+	f->name = name; 
 	MKNODE(tn,f,usrf); usrf = tn;
 	*r = f;
 }
@@ -832,18 +948,21 @@ void mkparif(char *name,FUNC *r)
 	f->name = name; f->id = A_PARI; f->argc = 0; f->f.binf = 0;
 }
 
-void mkuf(char *name,char *fname,NODE args,SNODE body,int startl,int endl,char *desc)
+void mkuf(char *name,char *fname,NODE args,SNODE body,int startl,int endl,char *desc,MODULE module)
 {
 	FUNC f;
 	USRF t;
-	NODE sn,tn;
+	NODE usrf_list,sn,tn;
 	FNODE fn;
+	char *longname;
 	int argc;
 
-	searchf(sysf,name,&f);
-	if ( f ) {
-		fprintf(stderr,"def : builtin function %s() cannot be redefined.\n",name);
-		CPVS = GPVS; return;
+	if ( !module ) {
+		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);
@@ -852,24 +971,32 @@ void mkuf(char *name,char *fname,NODE args,SNODE body,
 			CPVS = GPVS; return;
 		}
 	}
-	for ( sn = usrf; sn && strcmp(NAME((FUNC)BDY(sn)),name); sn = NEXT(sn) );
+	usrf_list = module ? module->usrf_list : usrf;
+	for ( sn = usrf_list; 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;
+		MKNODE(tn,f,usrf_list); usrf_list = tn;
+		if ( module )
+			module->usrf_list = usrf_list;
+		else
+			usrf = usrf_list;
 	}
-	if ( Verbose && f->id != A_UNDEF )
-		fprintf(stderr,"Warning : %s() redefined.\n",name);
-/*	else
-		fprintf(stderr,"%s() defined.\n",name); */
+	if ( Verbose && f->id != A_UNDEF ) {
+		if ( module )
+			fprintf(stderr,"Warning : %s.%s() redefined.\n",module->name,name);
+		else
+			fprintf(stderr,"Warning : %s() redefined.\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->startl = startl; t->endl = endl; t->module = module;
 	t->desc = desc;
 	f->id = A_USR; f->argc = argc; f->f.usrf = t;
 	CPVS = GPVS;
+	CUR_FUNC = 0;
 	clearbp(f);
 }
 
@@ -899,4 +1026,76 @@ Obj getopt_from_cpvs(char *key)
 		return VOIDobj;
 	}
 
+}
+
+MODULE mkmodule(char *name)
+{
+	MODULE mod;
+	NODE m;
+	int len;
+	VS mpvs;
+
+	for ( m = MODULE_LIST; m; m = NEXT(m) ) {
+		mod = (MODULE)m->body;
+		if ( !strcmp(mod->name,name) )
+			break;
+	}
+	if ( m )
+		return mod;
+	else {
+		mod = (MODULE)MALLOC(sizeof(struct oMODULE));
+		len = strlen(name);
+		mod->name = (char *)MALLOC_ATOMIC(len+1);
+		strcpy(mod->name,name);
+		mod->pvs = mpvs = (VS)MALLOC(sizeof(struct oVS));
+		reallocarray((char **)&mpvs->va,(int *)&mpvs->asize,
+			(int *)&mpvs->n,(int)sizeof(struct oPV));
+		mod->usrf_list = 0;
+		MKNODE(m,mod,MODULE_LIST);
+		MODULE_LIST = m;
+		return mod;
+	}
+}
+
+/* register function names to the proto list of a module */
+
+void register_proto(NODE n)
+{
+	NODE tn,flist;
+	char *name;
+	FUNC val;
+
+	if ( !CUR_MODULE )
+		error("globalf : must be declared in a module.");
+	for ( tn = n; tn; tn = NEXT(tn) ) {
+		name = (char *)BDY(tn);
+		searchf(sysf,name,&val);
+		if ( val ) {
+			fprintf(stderr,"globalf : `%s' is a builtin function.",name);
+			error("");
+		}
+		searchf(ubinf,name,&val);
+		if ( val ) {
+			fprintf(stderr,
+				"globalf : `%s' is a user-defined builtin function.",name);
+			error("");
+		}
+		searchpf(name,&val);
+		if ( val ) {
+			fprintf(stderr,"globalf : `%s' is a pure function.",name);
+			error("");
+		}
+		searchf(usrf,name,&val);
+		if ( !val )
+			appenduf_global(name,&val);
+		MKNODE(flist,val,CUR_MODULE->proto_list);
+		CUR_MODULE->proto_list = flist;
+	}
+}
+
+void print_crossref(FUNC f)
+{
+	if ( show_crossref && CUR_FUNC )
+		fprintf(asir_out,"%s() at line %d in %s()\n",
+			f->name, asir_infile->ln, CUR_FUNC);
 }