mirror of
https://github.com/python/cpython.git
synced 2024-12-01 03:01:36 +01:00
1ae940a587
err_fetch/err_restore and so on). But... NOTE: import.c has been rewritten and all the DL stuff is now in the new file importdl.c.
463 lines
9.0 KiB
C
463 lines
9.0 KiB
C
/***********************************************************
|
|
Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
|
|
Amsterdam, The Netherlands.
|
|
|
|
All Rights Reserved
|
|
|
|
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 copyright notice and this permission notice appear in
|
|
supporting documentation, and that the names of Stichting Mathematisch
|
|
Centrum or CWI not be used in advertising or publicity pertaining to
|
|
distribution of the software without specific, written prior permission.
|
|
|
|
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
|
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM 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.
|
|
|
|
******************************************************************/
|
|
|
|
/* Module support implementation */
|
|
|
|
#include "allobjects.h"
|
|
#include "import.h"
|
|
|
|
#ifdef MPW /* MPW pushes 'extended' for float and double types with varargs */
|
|
typedef extended va_double;
|
|
#else
|
|
typedef double va_double;
|
|
#endif
|
|
|
|
|
|
/* initmodule2() has an additional parameter, 'passthrough', which is
|
|
passed as 'self' to functions defined in the module. This is used
|
|
e.g. by dynamically loaded modules on the Mac. */
|
|
|
|
object *
|
|
initmodule2(name, methods, passthrough)
|
|
char *name;
|
|
struct methodlist *methods;
|
|
object *passthrough;
|
|
{
|
|
object *m, *d, *v;
|
|
struct methodlist *ml;
|
|
char *namebuf;
|
|
if ((m = add_module(name)) == NULL) {
|
|
fprintf(stderr, "initializing module: %s\n", name);
|
|
fatal("can't create a module");
|
|
}
|
|
d = getmoduledict(m);
|
|
for (ml = methods; ml->ml_name != NULL; ml++) {
|
|
namebuf = NEW(char, strlen(name) + strlen(ml->ml_name) + 2);
|
|
if (namebuf == NULL)
|
|
fatal("out of mem for method name");
|
|
sprintf(namebuf, "%s.%s", name, ml->ml_name);
|
|
v = newmethodobject(namebuf, ml->ml_meth,
|
|
(object *)passthrough, ml->ml_varargs);
|
|
/* XXX The malloc'ed memory in namebuf is never freed */
|
|
if (v == NULL || dictinsert(d, ml->ml_name, v) != 0) {
|
|
fprintf(stderr, "initializing module: %s\n", name);
|
|
fatal("can't initialize module");
|
|
}
|
|
DECREF(v);
|
|
}
|
|
return m;
|
|
}
|
|
|
|
/* The standard initmodule() passes NULL for 'self' */
|
|
|
|
object *
|
|
initmodule(name, methods)
|
|
char *name;
|
|
struct methodlist *methods;
|
|
{
|
|
return initmodule2(name, methods, (object *)NULL);
|
|
}
|
|
|
|
|
|
/* Helper for mkvalue() to scan the length of a format */
|
|
|
|
static int countformat PROTO((char *format, int endchar));
|
|
static int countformat(format, endchar)
|
|
char *format;
|
|
int endchar;
|
|
{
|
|
int count = 0;
|
|
int level = 0;
|
|
while (level > 0 || *format != endchar) {
|
|
switch (*format) {
|
|
case '\0':
|
|
/* Premature end */
|
|
err_setstr(SystemError, "unmatched paren in format");
|
|
return -1;
|
|
case '(':
|
|
case '[':
|
|
case '{':
|
|
if (level == 0)
|
|
count++;
|
|
level++;
|
|
break;
|
|
case ')':
|
|
case ']':
|
|
case '}':
|
|
level--;
|
|
break;
|
|
case '#':
|
|
case ',':
|
|
case ':':
|
|
case ' ':
|
|
case '\t':
|
|
break;
|
|
default:
|
|
if (level == 0)
|
|
count++;
|
|
}
|
|
format++;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
|
|
/* Generic function to create a value -- the inverse of getargs() */
|
|
/* After an original idea and first implementation by Steven Miale */
|
|
|
|
static object *do_mktuple PROTO((char**, va_list *, int, int));
|
|
static object *do_mklist PROTO((char**, va_list *, int, int));
|
|
static object *do_mkdict PROTO((char**, va_list *, int, int));
|
|
static object *do_mkvalue PROTO((char**, va_list *));
|
|
|
|
|
|
static object *
|
|
do_mkdict(p_format, p_va, endchar, n)
|
|
char **p_format;
|
|
va_list *p_va;
|
|
int endchar;
|
|
int n;
|
|
{
|
|
object *d;
|
|
int i;
|
|
if (n < 0)
|
|
return NULL;
|
|
if ((d = newdictobject()) == NULL)
|
|
return NULL;
|
|
for (i = 0; i < n; i+= 2) {
|
|
object *k, *v;
|
|
k = do_mkvalue(p_format, p_va);
|
|
if (k == NULL) {
|
|
DECREF(d);
|
|
return NULL;
|
|
}
|
|
v = do_mkvalue(p_format, p_va);
|
|
if (v == NULL) {
|
|
DECREF(k);
|
|
DECREF(d);
|
|
return NULL;
|
|
}
|
|
if (dict2insert(d, k, v) < 0) {
|
|
DECREF(k);
|
|
DECREF(v);
|
|
DECREF(d);
|
|
return NULL;
|
|
}
|
|
}
|
|
if (d != NULL && **p_format != endchar) {
|
|
DECREF(d);
|
|
d = NULL;
|
|
err_setstr(SystemError, "Unmatched paren in format");
|
|
}
|
|
else if (endchar)
|
|
++*p_format;
|
|
return d;
|
|
}
|
|
|
|
static object *
|
|
do_mklist(p_format, p_va, endchar, n)
|
|
char **p_format;
|
|
va_list *p_va;
|
|
int endchar;
|
|
int n;
|
|
{
|
|
object *v;
|
|
int i;
|
|
if (n < 0)
|
|
return NULL;
|
|
if ((v = newlistobject(n)) == NULL)
|
|
return NULL;
|
|
for (i = 0; i < n; i++) {
|
|
object *w = do_mkvalue(p_format, p_va);
|
|
if (w == NULL) {
|
|
DECREF(v);
|
|
return NULL;
|
|
}
|
|
setlistitem(v, i, w);
|
|
}
|
|
if (v != NULL && **p_format != endchar) {
|
|
DECREF(v);
|
|
v = NULL;
|
|
err_setstr(SystemError, "Unmatched paren in format");
|
|
}
|
|
else if (endchar)
|
|
++*p_format;
|
|
return v;
|
|
}
|
|
|
|
static object *
|
|
do_mktuple(p_format, p_va, endchar, n)
|
|
char **p_format;
|
|
va_list *p_va;
|
|
int endchar;
|
|
int n;
|
|
{
|
|
object *v;
|
|
int i;
|
|
if (n < 0)
|
|
return NULL;
|
|
if ((v = newtupleobject(n)) == NULL)
|
|
return NULL;
|
|
for (i = 0; i < n; i++) {
|
|
object *w = do_mkvalue(p_format, p_va);
|
|
if (w == NULL) {
|
|
DECREF(v);
|
|
return NULL;
|
|
}
|
|
settupleitem(v, i, w);
|
|
}
|
|
if (v != NULL && **p_format != endchar) {
|
|
DECREF(v);
|
|
v = NULL;
|
|
err_setstr(SystemError, "Unmatched paren in format");
|
|
}
|
|
else if (endchar)
|
|
++*p_format;
|
|
return v;
|
|
}
|
|
|
|
static object *
|
|
do_mkvalue(p_format, p_va)
|
|
char **p_format;
|
|
va_list *p_va;
|
|
{
|
|
for (;;) {
|
|
switch (*(*p_format)++) {
|
|
case '(':
|
|
return do_mktuple(p_format, p_va, ')',
|
|
countformat(*p_format, ')'));
|
|
|
|
case '[':
|
|
return do_mklist(p_format, p_va, ']',
|
|
countformat(*p_format, ']'));
|
|
|
|
case '{':
|
|
return do_mkdict(p_format, p_va, '}',
|
|
countformat(*p_format, '}'));
|
|
|
|
case 'b':
|
|
case 'h':
|
|
case 'i':
|
|
return newintobject((long)va_arg(*p_va, int));
|
|
|
|
case 'l':
|
|
return newintobject((long)va_arg(*p_va, long));
|
|
|
|
case 'f':
|
|
case 'd':
|
|
return newfloatobject((double)va_arg(*p_va, double));
|
|
|
|
case 'c':
|
|
{
|
|
char p[1];
|
|
p[0] = va_arg(*p_va, int);
|
|
return newsizedstringobject(p, 1);
|
|
}
|
|
|
|
case 's':
|
|
case 'z':
|
|
{
|
|
object *v;
|
|
char *str = va_arg(*p_va, char *);
|
|
int n;
|
|
if (**p_format == '#') {
|
|
++*p_format;
|
|
n = va_arg(*p_va, int);
|
|
}
|
|
else
|
|
n = -1;
|
|
if (str == NULL) {
|
|
v = None;
|
|
INCREF(v);
|
|
}
|
|
else {
|
|
if (n < 0)
|
|
n = strlen(str);
|
|
v = newsizedstringobject(str, n);
|
|
}
|
|
return v;
|
|
}
|
|
|
|
case 'S':
|
|
case 'O':
|
|
{
|
|
object *v;
|
|
v = va_arg(*p_va, object *);
|
|
if (v != NULL)
|
|
INCREF(v);
|
|
else if (!err_occurred())
|
|
/* If a NULL was passed
|
|
* because a call that should
|
|
* have constructed a value
|
|
* failed, that's OK, and we
|
|
* pass the error on; but if
|
|
* no error occurred it's not
|
|
* clear that the caller knew
|
|
* what she was doing. */
|
|
err_setstr(SystemError,
|
|
"NULL object passed to mkvalue");
|
|
return v;
|
|
}
|
|
|
|
case ':':
|
|
case ',':
|
|
case ' ':
|
|
case '\t':
|
|
break;
|
|
|
|
default:
|
|
err_setstr(SystemError,
|
|
"bad format char passed to mkvalue");
|
|
return NULL;
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
#ifdef HAVE_STDARG_PROTOTYPES
|
|
/* VARARGS 2 */
|
|
object *mkvalue(char *format, ...)
|
|
#else
|
|
/* VARARGS */
|
|
object *mkvalue(va_alist) va_dcl
|
|
#endif
|
|
{
|
|
va_list va;
|
|
object* retval;
|
|
#ifdef HAVE_STDARG_PROTOTYPES
|
|
va_start(va, format);
|
|
#else
|
|
char *format;
|
|
va_start(va);
|
|
format = va_arg(va, char *);
|
|
#endif
|
|
retval = vmkvalue(format, va);
|
|
va_end(va);
|
|
return retval;
|
|
}
|
|
|
|
object *
|
|
vmkvalue(format, va)
|
|
char *format;
|
|
va_list va;
|
|
{
|
|
char *f = format;
|
|
int n = countformat(f, '\0');
|
|
va_list lva;
|
|
|
|
#ifdef VA_LIST_IS_ARRAY
|
|
memcpy(lva, va, sizeof(va_list));
|
|
#else
|
|
lva = va;
|
|
#endif
|
|
|
|
if (n < 0)
|
|
return NULL;
|
|
if (n == 0) {
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
if (n == 1)
|
|
return do_mkvalue(&f, &lva);
|
|
return do_mktuple(&f, &lva, '\0', n);
|
|
}
|
|
|
|
|
|
#ifdef HAVE_STDARG_PROTOTYPES
|
|
object *
|
|
PyEval_CallFunction(object *obj, char *format, ...)
|
|
#else
|
|
object *
|
|
PyEval_CallFunction(obj, format, va_alist)
|
|
object *obj;
|
|
char *format;
|
|
va_dcl
|
|
#endif
|
|
{
|
|
va_list vargs;
|
|
object *args;
|
|
object *res;
|
|
|
|
#ifdef HAVE_STDARG_PROTOTYPES
|
|
va_start(vargs, format);
|
|
#else
|
|
va_start(vargs);
|
|
#endif
|
|
|
|
args = vmkvalue(format, vargs);
|
|
va_end(vargs);
|
|
|
|
if (args == NULL)
|
|
return NULL;
|
|
|
|
res = call_object(obj, args);
|
|
DECREF(args);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
#ifdef HAVE_STDARG_PROTOTYPES
|
|
object *
|
|
PyEval_CallMethod(object *obj, char *method, char *format, ...)
|
|
#else
|
|
object *
|
|
PyEval_CallMethod(obj, method, format, va_alist)
|
|
object *obj;
|
|
char *method;
|
|
char *format;
|
|
va_dcl
|
|
#endif
|
|
{
|
|
va_list vargs;
|
|
object *meth;
|
|
object *args;
|
|
object *res;
|
|
|
|
meth = getattr(obj, method);
|
|
if (meth == NULL)
|
|
return NULL;
|
|
|
|
#ifdef HAVE_STDARG_PROTOTYPES
|
|
va_start(vargs, format);
|
|
#else
|
|
va_start(vargs);
|
|
#endif
|
|
|
|
args = vmkvalue(format, vargs);
|
|
va_end(vargs);
|
|
|
|
if (args == NULL) {
|
|
DECREF(meth);
|
|
return NULL;
|
|
}
|
|
|
|
res = call_object(meth, args);
|
|
DECREF(meth);
|
|
DECREF(args);
|
|
|
|
return res;
|
|
}
|