1 files changed, 381 insertions, 0 deletions
diff --git a/src/modsupport.c b/src/modsupport.c
new file mode 100644
index 0000000..1044268
--- /dev/null
+++ b/src/modsupport.c
@@ -0,0 +1,381 @@
+/***********************************************************
+Copyright 1991 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 "modsupport.h"
+#include "import.h"
+
+
+object *
+initmodule(name, methods)
+ char *name;
+ struct methodlist *methods;
+{
+ object *m, *d, *v;
+ struct methodlist *ml;
+ char namebuf[256];
+ 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++) {
+ sprintf(namebuf, "%s.%s", name, ml->ml_name);
+ v = newmethodobject(strdup(namebuf), ml->ml_meth,
+ (object *)NULL);
+ /* XXX The strdup'ed memory 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;
+}
+
+
+/* Argument list handling tools.
+ All return 1 for success, or call err_set*() and return 0 for failure */
+
+int
+getnoarg(v)
+ object *v;
+{
+ if (v != NULL) {
+ return err_badarg();
+ }
+ return 1;
+}
+
+int
+getintarg(v, a)
+ object *v;
+ int *a;
+{
+ if (v == NULL || !is_intobject(v)) {
+ return err_badarg();
+ }
+ *a = getintvalue(v);
+ return 1;
+}
+
+int
+getintintarg(v, a, b)
+ object *v;
+ int *a;
+ int *b;
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getintarg(gettupleitem(v, 0), a) &&
+ getintarg(gettupleitem(v, 1), b);
+}
+
+int
+getlongarg(v, a)
+ object *v;
+ long *a;
+{
+ if (v == NULL || !is_intobject(v)) {
+ return err_badarg();
+ }
+ *a = getintvalue(v);
+ return 1;
+}
+
+int
+getlonglongargs(v, a, b)
+ object *v;
+ long *a, *b;
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getlongarg(gettupleitem(v, 0), a) &&
+ getlongarg(gettupleitem(v, 1), b);
+}
+
+int
+getlonglongobjectargs(v, a, b, c)
+ object *v;
+ long *a, *b;
+ object **c;
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 3) {
+ return err_badarg();
+ }
+ if (getlongarg(gettupleitem(v, 0), a) &&
+ getlongarg(gettupleitem(v, 1), b)) {
+ *c = gettupleitem(v, 2);
+ return 1;
+ }
+ else {
+ return err_badarg();
+ }
+}
+
+int
+getstrarg(v, a)
+ object *v;
+ object **a;
+{
+ if (v == NULL || !is_stringobject(v)) {
+ return err_badarg();
+ }
+ *a = v;
+ return 1;
+}
+
+int
+getstrstrarg(v, a, b)
+ object *v;
+ object **a;
+ object **b;
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getstrarg(gettupleitem(v, 0), a) &&
+ getstrarg(gettupleitem(v, 1), b);
+}
+
+int
+getstrstrintarg(v, a, b, c)
+ object *v;
+ object **a;
+ object **b;
+ int *c;
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 3) {
+ return err_badarg();
+ }
+ return getstrarg(gettupleitem(v, 0), a) &&
+ getstrarg(gettupleitem(v, 1), b) &&
+ getintarg(gettupleitem(v, 2), c);
+}
+
+int
+getstrintarg(v, a, b)
+ object *v;
+ object **a;
+ int *b;
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getstrarg(gettupleitem(v, 0), a) &&
+ getintarg(gettupleitem(v, 1), b);
+}
+
+int
+getintstrarg(v, a, b)
+ object *v;
+ int *a;
+ object **b;
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getintarg(gettupleitem(v, 0), a) &&
+ getstrarg(gettupleitem(v, 1), b);
+}
+
+int
+getpointarg(v, a)
+ object *v;
+ int *a; /* [2] */
+{
+ return getintintarg(v, a, a+1);
+}
+
+int
+get3pointarg(v, a)
+ object *v;
+ int *a; /* [6] */
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 3) {
+ return err_badarg();
+ }
+ return getpointarg(gettupleitem(v, 0), a) &&
+ getpointarg(gettupleitem(v, 1), a+2) &&
+ getpointarg(gettupleitem(v, 2), a+4);
+}
+
+int
+getrectarg(v, a)
+ object *v;
+ int *a; /* [2+2] */
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getpointarg(gettupleitem(v, 0), a) &&
+ getpointarg(gettupleitem(v, 1), a+2);
+}
+
+int
+getrectintarg(v, a)
+ object *v;
+ int *a; /* [4+1] */
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getrectarg(gettupleitem(v, 0), a) &&
+ getintarg(gettupleitem(v, 1), a+4);
+}
+
+int
+getpointintarg(v, a)
+ object *v;
+ int *a; /* [2+1] */
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getpointarg(gettupleitem(v, 0), a) &&
+ getintarg(gettupleitem(v, 1), a+2);
+}
+
+int
+getpointstrarg(v, a, b)
+ object *v;
+ int *a; /* [2] */
+ object **b;
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getpointarg(gettupleitem(v, 0), a) &&
+ getstrarg(gettupleitem(v, 1), b);
+}
+
+int
+getstrintintarg(v, a, b, c)
+ object *v;
+ object *a;
+ int *b, *c;
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 3) {
+ return err_badarg();
+ }
+ return getstrarg(gettupleitem(v, 0), a) &&
+ getintarg(gettupleitem(v, 1), b) &&
+ getintarg(gettupleitem(v, 2), c);
+}
+
+int
+getrectpointarg(v, a)
+ object *v;
+ int *a; /* [4+2] */
+{
+ if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) {
+ return err_badarg();
+ }
+ return getrectarg(gettupleitem(v, 0), a) &&
+ getpointarg(gettupleitem(v, 1), a+4);
+}
+
+int
+getlongtuplearg(args, a, n)
+ object *args;
+ long *a; /* [n] */
+ int n;
+{
+ int i;
+ if (!is_tupleobject(args) || gettuplesize(args) != n) {
+ return err_badarg();
+ }
+ for (i = 0; i < n; i++) {
+ object *v = gettupleitem(args, i);
+ if (!is_intobject(v)) {
+ return err_badarg();
+ }
+ a[i] = getintvalue(v);
+ }
+ return 1;
+}
+
+int
+getshorttuplearg(args, a, n)
+ object *args;
+ short *a; /* [n] */
+ int n;
+{
+ int i;
+ if (!is_tupleobject(args) || gettuplesize(args) != n) {
+ return err_badarg();
+ }
+ for (i = 0; i < n; i++) {
+ object *v = gettupleitem(args, i);
+ if (!is_intobject(v)) {
+ return err_badarg();
+ }
+ a[i] = getintvalue(v);
+ }
+ return 1;
+}
+
+int
+getlonglistarg(args, a, n)
+ object *args;
+ long *a; /* [n] */
+ int n;
+{
+ int i;
+ if (!is_listobject(args) || getlistsize(args) != n) {
+ return err_badarg();
+ }
+ for (i = 0; i < n; i++) {
+ object *v = getlistitem(args, i);
+ if (!is_intobject(v)) {
+ return err_badarg();
+ }
+ a[i] = getintvalue(v);
+ }
+ return 1;
+}
+
+int
+getshortlistarg(args, a, n)
+ object *args;
+ short *a; /* [n] */
+ int n;
+{
+ int i;
+ if (!is_listobject(args) || getlistsize(args) != n) {
+ return err_badarg();
+ }
+ for (i = 0; i < n; i++) {
+ object *v = getlistitem(args, i);
+ if (!is_intobject(v)) {
+ return err_badarg();
+ }
+ a[i] = getintvalue(v);
+ }
+ return 1;
+}