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149 lines
3.3 KiB
C
149 lines
3.3 KiB
C
/***********************************************************
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Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
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Netherlands.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the names of Stichting Mathematisch
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Centrum or CWI not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior permission.
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STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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******************************************************************/
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/* Method object implementation */
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#include "allobjects.h"
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#include "token.h"
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typedef struct {
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OB_HEAD
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char *m_name;
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method m_meth;
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object *m_self;
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} methodobject;
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object *
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newmethodobject(name, meth, self)
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char *name; /* static string */
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method meth;
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object *self;
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{
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methodobject *op = NEWOBJ(methodobject, &Methodtype);
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if (op != NULL) {
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op->m_name = name;
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op->m_meth = meth;
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if (self != NULL)
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INCREF(self);
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op->m_self = self;
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}
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return (object *)op;
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}
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method
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getmethod(op)
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object *op;
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{
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if (!is_methodobject(op)) {
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err_badcall();
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return NULL;
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}
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return ((methodobject *)op) -> m_meth;
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}
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object *
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getself(op)
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object *op;
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{
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if (!is_methodobject(op)) {
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err_badcall();
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return NULL;
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}
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return ((methodobject *)op) -> m_self;
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}
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/* Methods (the standard built-in methods, that is) */
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static void
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meth_dealloc(m)
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methodobject *m;
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{
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if (m->m_self != NULL)
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DECREF(m->m_self);
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free((char *)m);
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}
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static int
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meth_print(m, fp, flags)
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methodobject *m;
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FILE *fp;
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int flags;
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{
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if (m->m_self == NULL)
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fprintf(fp, "<built-in function '%s'>", m->m_name);
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else
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fprintf(fp, "<built-in method '%s' of some %s object>",
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m->m_name, m->m_self->ob_type->tp_name);
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return 0;
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}
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static object *
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meth_repr(m)
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methodobject *m;
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{
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char buf[200];
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if (m->m_self == NULL)
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sprintf(buf, "<built-in function '%.80s'>", m->m_name);
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else
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sprintf(buf,
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"<built-in method '%.80s' of some %.80s object>",
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m->m_name, m->m_self->ob_type->tp_name);
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return newstringobject(buf);
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}
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typeobject Methodtype = {
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OB_HEAD_INIT(&Typetype)
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0,
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"method",
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sizeof(methodobject),
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0,
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meth_dealloc, /*tp_dealloc*/
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meth_print, /*tp_print*/
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0, /*tp_getattr*/
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0, /*tp_setattr*/
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0, /*tp_compare*/
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meth_repr, /*tp_repr*/
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0, /*tp_as_number*/
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0, /*tp_as_sequence*/
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0, /*tp_as_mapping*/
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};
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/* Find a method in a module's method table.
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Usually called from an object's getattr method. */
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object *
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findmethod(ml, op, name)
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struct methodlist *ml;
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object *op;
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char *name;
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{
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for (; ml->ml_name != NULL; ml++) {
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if (strcmp(name, ml->ml_name) == 0)
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return newmethodobject(ml->ml_name, ml->ml_meth, op);
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}
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err_setstr(NameError, name);
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return NULL;
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}
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