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wrksp.c
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wrksp.c
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/*
* wrksp.c logo workspace management module dvb
*
* Copyright (C) 1993 by the Regents of the University of California
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <ctype.h>
#ifdef WIN32
#include <windows.h>
#else
#include <sys/wait.h>
#endif
#define WANT_EVAL_REGS 1
#include "logo.h"
#include "globals.h"
#ifdef HAVE_WX
int wxEditFile(char *);
long wxLaunchExternalEditor(char *, char *);
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef ibm
#include "process.h"
#endif
#ifdef HAVE_TERMIO_H
#ifdef HAVE_WX
#include <termios.h>
#else
#include <termio.h>
#endif
#else
#ifdef HAVE_SGTTY_H
#include <sgtty.h>
#endif
#endif
#ifdef HAVE_WX
#define fgets wx_fgets
#endif
#ifdef OBJECTS
extern NODE* get_var(NODE*, NODE*);
extern NODE* get_proc(NODE*, NODE*);
extern NODE* set_proc(NODE*, NODE*, NODE*);
#endif
char *editor, *editorname, *tempdir;
int to_pending = 0;
int bck(int);
NODE *make_procnode(NODE *lst, NODE *wrds, int min, int df, int max) {
return(cons_list(0, lst, wrds, make_intnode((FIXNUM)min),
make_intnode((FIXNUM)df), make_intnode((FIXNUM)max),
END_OF_LIST));
}
NODE *get_bodywords(NODE *pproc, NODE *name) {
NODE *val = bodywords__procnode(pproc);
NODE *head = NIL, *tail = NIL;
if (val != NIL) return(val);
name = intern(name);
head = cons_list(0, (is_macro(name) ? theName(Name_macro) : theName(Name_to)),
name, END_OF_LIST);
tail = cdr(head);
val = formals__procnode(pproc);
while (val != NIL) {
if (is_list(car(val)))
setcdr(tail, cons(cons(make_colon(caar(val)), cdar(val)), NIL));
else if (nodetype(car(val)) == INT)
setcdr(tail, cons(car(val),NIL));
else
setcdr(tail, cons(make_colon(car(val)),NIL));
tail = cdr(tail);
val = cdr(val);
}
head = cons(head, NIL);
tail = head;
val = bodylist__procnode(pproc);
while (val != NIL) {
setcdr(tail, cons(runparse(car(val)), NIL));
tail = cdr(tail);
val = cdr(val);
}
setcdr(tail, cons(cons(theName(Name_end), NIL), NIL));
/* setbodywords__procnode(pproc,head); */ /* confuses copydef */
return(head);
}
NODE *name_arg(NODE *args) {
while (aggregate(car(args)) && NOT_THROWING)
setcar(args, err_logo(BAD_DATA, car(args)));
return car(args);
}
NODE *proc_name_arg(NODE *args) {
while ((aggregate(car(args)) || numberp(car(args))) && NOT_THROWING)
setcar(args, err_logo(BAD_DATA, car(args)));
return car(args);
}
NODE *ltext(NODE *args) {
NODE *name, *val = UNBOUND;
name = proc_name_arg(args);
if (NOT_THROWING) {
name=intern(name);
check_library(name);
val = procnode__caseobj(name);
if (val == UNDEFINED) {
err_logo(DK_HOW_UNREC,name);
return UNBOUND;
} else if (is_prim(val)) {
err_logo(IS_PRIM,name);
return UNBOUND;
} else {
untreeify_proc(val);
return text__procnode(val);
}
}
return UNBOUND;
}
NODE *lfulltext(NODE *args) {
NODE *name, *val = UNBOUND;
name = proc_name_arg(args);
if (NOT_THROWING) {
name=intern(name);
check_library(name);
val = procnode__caseobj(name);
if (val == UNDEFINED) {
err_logo(DK_HOW_UNREC,name);
return UNBOUND;
} else if (is_prim(val)) {
err_logo(IS_PRIM,name);
return UNBOUND;
} else
return get_bodywords(val,name);
}
return UNBOUND;
}
BOOLEAN all_lists(NODE *val) {
if (val == NIL) return TRUE;
if (!is_list(car(val))) return FALSE;
return all_lists(cdr(val));
}
#ifdef OBJECTS
BOOLEAN proc_exists(NODE *name) {
return get_proc(name, current_object) != UNDEFINED;
// if (current_object == logo_object)
// return procnode__caseobj(name) != UNDEFINED;
// else
// return assoc(name, getprocs(current_object)) != NIL;
}
BOOLEAN prim_exists(NODE *name) {
NODE *proc_node = get_proc(name, current_object);
return (proc_node == UNDEFINED ? FALSE : is_prim(proc_node));
// if (current_object == logo_object)
// return is_prim(procnode__caseobj(name));
// else
// binding = assoc(name, getprocs(current_object));
// return (binding==NIL ? FALSE : is_prim(getobject(binding)));
}
int find_old_default(NODE *name) {
NODE *p;
if (flag__caseobj(name, MIXED_ARITY)) return -2;
p = procValue(name);
if (p == UNDEFINED) return -1;
return (is_prim(p) ? getprimdflt(p) : getint(dfltargs__procnode(p)));
}
#endif /* OBJECTS */
NODE *define_helper(NODE *args, BOOLEAN macro_flag) {
/* macro_flag is -1 for anonymous function */
NODE *name = NIL, *val = NIL, *arg = NIL;
int minimum = 0, deflt = 0, maximum = 0, old_default = -1;
int redef = (varTrue(Redefp));
if (macro_flag >= 0) {
name = proc_name_arg(args);
if (NOT_THROWING) {
name = intern(name);
val = procnode__caseobj(name);
if (!redef && is_prim(val)) {
err_logo(IS_PRIM,name);
return UNBOUND;
} else if (val != UNDEFINED) {
old_default = (is_prim(val) ? getprimdflt(val) :
getint(dfltargs__procnode(val)));
}
}
if (NOT_THROWING) {
val = cadr(args);
while ((val == NIL || !is_list(val) || !all_lists(val)) &&
NOT_THROWING) {
setcar(cdr(args), err_logo(BAD_DATA, val));
val = cadr(args);
}
if (NOT_THROWING) val = deep_copy(val);
/* 5.4 fixes bug about defined procedures sharing tree form */
}
} else { /* lambda */
val = args;
}
if (NOT_THROWING) {
args = car(val);
if (args != NIL) {
make_runparse(args);
args = parsed__runparse(args);
}
setcar(val, args);
while (args != NIL) {
arg = car(args);
if (arg != NIL && is_list(arg) && maximum != -1) {
make_runparse(arg);
arg = parsed__runparse(arg);
setcar(args, arg);
setcar(arg, intern(car(arg))); /* fixes crash for # as arg */
maximum++;
if (arg == NIL || !is_word(car(arg))) {
err_logo(BAD_DATA_UNREC, arg);
break;
}
if (cdr(arg) == NIL)
maximum = -1;
} else if (nodetype(arg) == INT) {
if ((unsigned)getint(arg) <= (unsigned) maximum &&
getint(arg) >= minimum) {
deflt = getint(arg);
} else {
err_logo(BAD_DATA_UNREC, arg);
break;
}
} else if (is_word(arg) && maximum == minimum) {
minimum++;
maximum++;
deflt++;
} else {
err_logo(BAD_DATA_UNREC, arg);
break;
}
args = cdr(args);
if (check_throwing) break;
}
}
if (macro_flag < 0) {
return make_procnode(val, NIL, minimum, deflt, maximum);
} else if (NOT_THROWING) {
setprocnode__caseobj(name,
make_procnode(val, NIL, minimum, deflt, maximum));
if (macro_flag)
setflag__caseobj(name, PROC_MACRO);
else
clearflag__caseobj(name, PROC_MACRO);
if (deflt != old_default && old_default >= 0) {
the_generation = cons(NIL, NIL);
}
need_save = 1;
}
return(UNBOUND);
}
NODE *ldefine(NODE *args) {
return define_helper(args, FALSE);
}
NODE *ldefmacro(NODE *args) {
return define_helper(args, TRUE);
}
NODE *anonymous_function(NODE *text) {
return define_helper(text, -1);
}
char *strncasestr(char *big, char *little, FIXNUM len) {
char *p, *q, pc, qc;
FIXNUM i;
while (*big != '\0') {
while ((pc = *big++) != '\0' && tolower(pc) != tolower(*little)) ;
if (pc == '\0') return NULL;
p = big; q = little+1; i = len;
while (--i > 0 && (qc = *q++) != '\0') {
if ((pc = *p++) == '\0') return NULL;
if (pc == '~') {
while ((pc = *p++) != '\0' && pc != '\n') ;
if (pc == '\0') return NULL;
pc = *p++;
}
if (tolower(pc) != tolower(qc)) break;
}
if (i == 0) return big-1;
}
return NULL; /* not reached, I think */
}
NODE *find_to(NODE *line) {
char *lp = getstrptr(line);
NODE *funn = cnv_node_to_strnode(fun);
char *fp = getstrptr(funn);
FIXNUM len = getstrlen(funn);
char *p, c;
p = lp;
while (p != NULL) {
p = strncasestr(p, fp, len);
if (p == NULL) return(line); /* punt */
if ((c = *(p+len)) == ' ' || c == '\t' || c == '\n') {
if (p == lp ||
((c = *(p-1)) == ' ' || c == '\t' || c == '\n'))
return make_strnode(p, getstrhead(line),
getstrlen(line)-(p-lp),
nodetype(line), strcpy);
if (c == '[')
return make_strnode(p, getstrhead(line),
strchr(p, ']')-p,
nodetype(line), strcpy);
}
p++;
}
return line;
}
NODE *to_helper(NODE *args, BOOLEAN macro_flag) {
NODE *arg = NIL, *tnode = NIL, *proc_name, *forms = NIL, *lastnode = NIL,
*body_words, *lastnode2, *body_list;
int minimum = 0, deflt = 0, maximum = 0, old_default = -1;
if (ufun != NIL && loadstream == stdin) {
err_logo(NOT_INSIDE,NIL);
return(UNBOUND);
}
if (args == NIL) {
err_logo(NOT_ENOUGH,NIL);
return(UNBOUND);
}
deepend_proc_name = proc_name = car(args);
args = cdr(args);
if (nodetype(proc_name) != CASEOBJ)
err_logo(BAD_DATA_UNREC, proc_name);
#ifdef OBJECTS
else if ((proc_exists(proc_name) && loadstream == stdin)
|| prim_exists(proc_name))
#else /* OBJECTS */
else if ((procnode__caseobj(proc_name) != UNDEFINED && loadstream == stdin)
|| is_prim(procnode__caseobj(proc_name)))
#endif /* OBJECTS */
err_logo(ALREADY_DEFINED, proc_name);
else {
#ifdef OBJECTS
old_default = find_old_default(proc_name);
#else /* OBJECTS */
NODE *old_proc = procnode__caseobj(proc_name);
if (old_proc != UNDEFINED) {
old_default = (is_prim(old_proc) ? getprimdflt(old_proc) :
getint(dfltargs__procnode(old_proc)));
}
#endif /* OBJECTS */
while (args != NIL) {
arg = car(args);
args = cdr(args);
if (nodetype(arg) == CONS && maximum != -1) {
make_runparse(arg);
arg = parsed__runparse(arg);
maximum++;
if (arg == NIL || !is_word(car(arg))) {
err_logo(BAD_DATA_UNREC, arg);
break;
}
if (nodetype(car(arg)) == COLON)
setcar(arg, node__colon(car(arg)));
if (nodetype(car(arg)) == QUOTE)
setcar(arg, node__quote(car(arg)));
if (cdr(arg) == NIL)
maximum = -1;
} else if (nodetype(arg) == INT) {
if ((unsigned)getint(arg) <= (unsigned) maximum &&
getint(arg) >= minimum) {
deflt = getint(arg);
} else {
err_logo(BAD_DATA_UNREC, arg);
break;
}
} else if (is_word(arg) && maximum == minimum) {
if (nodetype(arg) == COLON)
arg = node__colon(arg);
if (nodetype(arg) == QUOTE)
arg = node__quote(arg);
minimum++;
maximum++;
deflt++;
} else {
err_logo(BAD_DATA_UNREC, arg);
break;
}
tnode = cons(arg, NIL);
if (forms == NIL) forms = tnode;
else setcdr(lastnode, tnode);
lastnode = tnode;
}
}
if (NOT_THROWING) {
body_words = cons(find_to(current_line), NIL);
lastnode2 = body_words;
body_list = cons(forms, NIL);
lastnode = body_list;
to_pending++; /* for int or quit signal */
while (NOT_THROWING && to_pending && (!feof(loadstream))) {
tnode = cons(reader(loadstream, "> "), NIL);
if ((feof(loadstream))) {
tnode = cons(theName(Name_end), NIL);
}
setcdr(lastnode2, tnode);
lastnode2 = tnode;
tnode = cons(parser(car(tnode), TRUE), NIL);
if (car(tnode) != NIL && isName(caar(tnode), Name_end)){
break;
} else if (car(tnode) != NIL) {
setcdr(lastnode, tnode);
lastnode = tnode;
}
}
if (to_pending && NOT_THROWING) {
#ifdef OBJECT
// proc is a hash-table entry
NODE* proc_obj;
proc_obj = set_proc(proc_name,
make_procnode(body_list,
body_words,
minimum,
deflt, maximum),
current_object);
if (macro_flag)
setflag__object(proc_obj, PROC_MACRO);
else
clearflag__object(proc_obj, PROC_MACRO);
if (deflt != old_default && old_default >= 0) {
the_generation = cons(NIL, NIL);
}
if (loadstream == stdin || varTrue(LoadNoisily)) {
ndprintf(stdout, message_texts[LOAD_DEF], proc_name);
}
if (loadstream != stdin && varTrue(UnburyOnEdit)) {
clearflag__object(proc_obj, PROC_BURIED);
}
/*if (current_object != logo_object) {
setprocs(current_object,
cons(proc_name, getprocs(current_object)));
setobject(getprocs(current_object),
make_procnode(body_list,
body_words,
minimum,
deflt, maximum));
}else{
setprocnode__caseobj(proc_name,
make_procnode(body_list, body_words, minimum,
deflt, maximum));
}*/
#else
setprocnode__caseobj(proc_name,
make_procnode(body_list, body_words, minimum,
deflt, maximum));
if (macro_flag)
setflag__caseobj(proc_name, PROC_MACRO);
else
clearflag__caseobj(proc_name, PROC_MACRO);
if (deflt != old_default && old_default >= 0) {
the_generation = cons(NIL, NIL);
}
if (loadstream == stdin || varTrue(LoadNoisily)) {
ndprintf(stdout, message_texts[LOAD_DEF], proc_name);
}
if (loadstream != stdin && varTrue(UnburyOnEdit)) {
clearflag__caseobj(proc_name, PROC_BURIED);
}
#endif
}
to_pending = 0;
need_save = 1;
}
deepend_proc_name = NIL;
return(UNBOUND);
}
NODE *lto(NODE *args) {
return to_helper(args, FALSE);
}
NODE *lmacro(NODE *args) {
return to_helper(args, TRUE);
}
#ifdef OBJECTS
/* If binding found in object hierarchy and as local, flag error, same
as varValue. If binding found only in object hierarchy, set it.
Otherwise (including if no binding found at all) set valnode in
symbol table. Need to distinguish var local to --this-- procedure from var
inherited from caller. Former is allowed to conflict with object variable.
*/
NODE *lmake(NODE *args) {
NODE *what, *object, *bindings, *binding;
what = name_arg(args);
if (NOT_THROWING) {
what = intern(what);
if (varInObjectHierarchy(what, FALSE) != (NODE *)(-1)) {
if (flag__caseobj(what, IS_LOCAL_VALUE)) {
err_logo(LOCAL_AND_OBJ, what);
return UNBOUND;
} else {
need_save = 1;
object = varInThisObject(what, FALSE);
// assertion, object should never = NIL at this point
binding = get_var(what, object);
/* for (bindings = getvars(object); bindings != NIL;
bindings = cdr(bindings)) {
if (car(bindings) == what) {
setobject(bindings, cadr(args));
break;
}
}*/
}
} else {
binding = object__caseobj(what);
//setvalnode__caseobj(what, cadr(args));
if (!flag__caseobj(what, IS_LOCAL_VALUE)) {
setflag__caseobj(what, HAS_GLOBAL_VALUE);
need_save = 1;
}
}
// at this piont we should have a hash table entry
// in the binding variable
setvalnode__object(binding, cadr(args));
if (flag__object(binding, VAL_TRACED)) {
NODE *tvar = maybe_quote(cadr(args));
ndprintf(writestream, message_texts[TRACE_MAKE],
make_quote(what), tvar);
if (ufun != NIL) {
ndprintf(writestream,message_texts[ERROR_IN],ufun,this_line);
}
new_line(writestream);
}
}
return(UNBOUND);
}
#else /* OBJECTS */
NODE *lmake(NODE *args) {
NODE *what;
what = name_arg(args);
if (NOT_THROWING) {
what = intern(what);
setvalnode__caseobj(what, cadr(args));
if (!flag__caseobj(what, IS_LOCAL_VALUE)) {
setflag__caseobj(what, HAS_GLOBAL_VALUE);
need_save = 1;
}
if (flag__caseobj(what, VAL_TRACED)) {
NODE *tvar = maybe_quote(cadr(args));
ndprintf(writestream, message_texts[TRACE_MAKE],
make_quote(what), tvar);
if (ufun != NIL) {
ndprintf(writestream,message_texts[ERROR_IN],ufun,this_line);
}
new_line(writestream);
}
}
return(UNBOUND);
}
#endif /* OBJECTS */
NODE *llocal(NODE *args) {
NODE *arg = NIL;
if (tailcall != 0) return UNBOUND;
if (args==NIL) return UNBOUND;
while (is_list(car(args)) && cdr(args) != NIL && NOT_THROWING)
setcar(args, err_logo(BAD_DATA, car(args)));
if (is_list(car(args)))
args = car(args);
while (args != NIL && NOT_THROWING) {
arg = car(args);
while (!is_word(arg) && NOT_THROWING) {
arg = err_logo(BAD_DATA, arg);
setcar(args, arg); /* prevent crash in lapply */
}
if (NOT_THROWING) {
arg = intern(arg);
setcar(args, arg); /* local [a b] faster next time */
if (not_local(arg,var_stack)) {
push(arg, var_stack);
if (flag__caseobj(arg, IS_LOCAL_VALUE))
settype(var_stack, LOCALSAVE);
setobject(var_stack, valnode__caseobj(arg));
setflag__caseobj(arg, IS_LOCAL_VALUE);
}
setvalnode__caseobj(arg, UNBOUND);
tell_shadow(arg);
args = cdr(args);
}
if (check_throwing) break;
}
return(UNBOUND);
}
NODE *lglobal(NODE *args) {
NODE *arg = NIL;
if (args==NIL) return UNBOUND;
while (is_list(car(args)) && cdr(args) != NIL && NOT_THROWING)
setcar(args, err_logo(BAD_DATA, car(args)));
if (is_list(car(args)))
args = car(args);
while (args != NIL && NOT_THROWING) {
arg = car(args);
while (!is_word(arg) && NOT_THROWING) {
arg = err_logo(BAD_DATA, arg);
setcar(args, arg); /* prevent crash in lapply */
}
if (NOT_THROWING) {
arg = intern(arg);
setcar(args, arg); /* local [a b] faster next time */
setflag__caseobj(arg, HAS_GLOBAL_VALUE);
args = cdr(args);
}
if (check_throwing) break;
}
return(UNBOUND);
}
NODE *cnt_list = NIL;
NODE *cnt_last = NIL;
int want_buried = 0;
typedef enum {c_PROCS, c_VARS, c_PLISTS, c_PRIMS, c_PROCSnPRIMS} CNTLSTTYP;
CNTLSTTYP contents_list_type;
#ifdef OBJECTS //OBJECTS4
/* For ancestry lists */
typedef enum {NORMAL, ANCESTRY} LSTFORM;
/* For type of list wanted */
typedef enum {ACCESSIBLE, OWNED, INHERITED} LSTTYP;
void contents_map(NODE *sym);
NODE *mergesrt(NODE *nd);
void putname(NODE *name, NODE *obj, LSTFORM format);
void special_contents_map(NODE *sym, LSTFORM format);
/* Depending on the current contents_list_type, this returns the variables
or procedures of the current object. Signals error if plists */
NODE *contentsListType(NODE *obj) {
switch (contents_list_type) {
case c_VARS:
return getvars(obj);
case c_PROCS:
return getprocs(obj);
case c_PLISTS:
case c_PRIMS:
case c_PROCSnPRIMS:
err_logo(BAD_DATA, make_static_strnode("objects don't have plists!"));
}
return NIL;
}
void normal_special_contents_map(NODE *sym) {
special_contents_map(sym, NORMAL);
}
void ancestry_special_contents_map(NODE *sym) {
special_contents_map(sym, ANCESTRY);
}
void fmt_map_oblist(LSTFORM format) {
if (format == NORMAL)
map_oblist(normal_special_contents_map);
else
map_oblist(ancestry_special_contents_map);
}
/** new things **/
/* get_contents with special format and normal format */
NODE *get_special_contents(LSTTYP type, LSTFORM format) {
cnt_list = NIL;
cnt_last = NIL;
if (current_object == logo_object)
fmt_map_oblist(format);
else {
/* for accessible, owned, or inherited, the current object's
vars/procs have to be in cnt_list */
NODE *mylist = contentsListType(current_object); /* contains vars or procs of current object */
while (mylist != NIL) {
putname(caar(mylist), current_object, format);
mylist = cdr(mylist);
}
/* do not need to add parents' vars/procs for owned, but do for
accessible and inherited */
if (type == ACCESSIBLE || type == INHERITED) {
/* add your parents */
NODE *parlst = parent_list(current_object);
while (parlst != NIL) {
if (car(parlst) == logo_object) {
fmt_map_oblist(format);
} else {
mylist = contentsListType(car(parlst));
while (mylist != NIL) {
putname(caar(mylist), car(parlst), format);
/* put name of var or proc, associated with parent object */
mylist = cdr(mylist);
}
}
parlst = cdr(parlst);
}
/* if accessible, then remove the shadowed vars/procs */
if (type == ACCESSIBLE) {
// TODO: Find removeShadowed
//cnt_list = removeShadowed(cnt_list);
}
}
}
return(cnt_list);
}
/* used for getting the normal plist contents */
NODE *get_plistcontents() {
cnt_list = NIL;
cnt_last = NIL;
map_oblist(contents_map);
cnt_list = mergesrt(cnt_list);
return(cnt_list);
}
/* puts name or name with object into cnt_list */
void putname(NODE *name, NODE *obj, LSTFORM format) {
NODE *newNode;
if (format == NORMAL)
newNode = name;
else
newNode = cons(name, cons(obj, NIL));
if (cnt_list == NIL) {
cnt_list = cons(newNode, NIL);
cnt_last = cnt_list;
} else {
setcdr(cnt_last, newNode);
cnt_last = cdr(cnt_last);
}
}
/* contents_map for special format */
void special_contents_map(NODE *sym, LSTFORM format) {
int flag_check = PROC_BURIED;
if (want_buried) flag_check = want_buried;
switch(contents_list_type) {
case c_PROCS:
check_library(sym);
if (procnode__object(sym) == UNDEFINED ||
is_prim(procnode__object(sym)))
return;
if (bck(flag__object(sym,flag_check)))
return;
break;
case c_VARS:
flag_check <<= 1;
if (valnode__object(sym) == UNBOUND) return;
if (bck(flag__object(sym,flag_check))) return;
break;
case c_PLISTS:
case c_PRIMS:
case c_PROCSnPRIMS:
err_logo(BAD_DATA, UNBOUND); //contents_list_type
}
putname(canonical__object(sym), logo_object, format);
}
/* checks if the car of the item is equal to the car of something in
alist */
BOOLEAN carequal(NODE *item, NODE *alist) {
while (alist != NIL) {
if (car(item) == caar(alist))
return TRUE;
alist = cdr(alist);
}
return FALSE;
}
#endif
int bck(int flag) {
return (want_buried ? !flag : flag);
}
void contents_map(NODE *sym) {
int flag_check = PROC_BURIED;
if (want_buried) flag_check = want_buried;
switch(contents_list_type) {
case c_PROCS:
check_library(sym);
if (procnode__object(sym) == UNDEFINED ||
is_prim(procnode__object(sym)))
return;
if (bck(flag__object(sym,flag_check))) return;
break;
case c_PRIMS:
if (procnode__object(sym) == UNDEFINED ||
!is_prim(procnode__object(sym)))
return;
break;
case c_PROCSnPRIMS:
check_library(sym);
if (procnode__object(sym) == UNDEFINED)
return;
if (bck(flag__object(sym,flag_check))) return;
break;
case c_VARS:
flag_check <<= 1;
if (valnode__object(sym) == UNBOUND) return;
if (bck(flag__object(sym,flag_check))) return;
break;
case c_PLISTS:
flag_check <<= 2;
if (plist__object(sym) == NIL) return;
if (bck(flag__object(sym,flag_check))) return;
break;
}
if (cnt_list == NIL) {
cnt_list = cons(canonical__object(sym), NIL);
cnt_last = cnt_list;
} else {
setcdr(cnt_last, cons(canonical__object(sym), NIL));
cnt_last = cdr(cnt_last);
}
}
void ms_listlist(NODE *nd) {
while (nd != NIL) {
setcar(nd, cons(car(nd), NIL));
nd = cdr(nd);
}
}
NODE *merge(NODE *a, NODE *b) {
NODE *ret, *tail;
if (a == NIL) return(b);
if (b == NIL) return(a);
if (compare_node(car(a),car(b),FALSE) < 0) {
ret = a;
tail = a;
a = cdr(a);
} else {
ret = b;
tail = b;
b = cdr(b);
}
while (a != NIL && b != NIL) {
if (compare_node(car(a),car(b),FALSE) < 0) {
setcdr(tail, a);
a = cdr(a);
} else {
setcdr(tail, b);
b = cdr(b);
}
tail = cdr(tail);
}
if (b == NIL) setcdr(tail, a);
else setcdr(tail, b);
return ret;
}
void mergepairs(NODE *nd) {
while (nd != NIL && cdr(nd) != NIL) {
setcar(nd, merge(car(nd), cadr(nd)));
setcdr(nd, cddr(nd));
nd = cdr(nd);
}
}
NODE *mergesrt(NODE *nd) { /* spelled funny to avoid library conflict */
if (nd == NIL) return(NIL);
if (cdr(nd) == NIL) return(nd);
ms_listlist(nd);
while (cdr(nd) != NIL)
mergepairs(nd);
return car(nd);
}
NODE *get_contents() {
cnt_list = NIL;
cnt_last = NIL;
map_oblist(contents_map);
cnt_list = mergesrt(cnt_list);
return(cnt_list);
}
#ifdef OBJECTS //OBJECTS4
/* calls to new special_contents */
NODE *lcontents(NODE *args) {
NODE *ret;
want_buried = 0;
contents_list_type = c_PLISTS;
ret = cons(get_plistcontents(), NIL);
contents_list_type = c_VARS;
push(get_special_contents(ACCESSIBLE, NORMAL), ret);
contents_list_type = c_PROCS;
push(get_special_contents(ACCESSIBLE, NORMAL), ret);
cnt_list = NIL;
return(ret);
}
NODE *lburied(NODE *args) {
NODE *ret;
want_buried = PROC_BURIED;
contents_list_type = c_PLISTS;
ret = cons(get_plistcontents(), NIL);
contents_list_type = c_VARS;
push(get_special_contents(INHERITED, ANCESTRY), ret);
contents_list_type = c_PROCS;
push(get_special_contents(INHERITED, ANCESTRY), ret);
cnt_list = NIL;