"Compiling" version

1 files changed, 134 insertions, 0 deletions

diff --git a/Python/structmember.c b/Python/structmember.c
new file mode 100644
index 0000000..42c563e
--- /dev/null
+++ b/Python/structmember.c
@@ -0,0 +1,134 @@
+/* Map C struct members to Python object attributes */
+
+#include "allobjects.h"
+
+#include "structmember.h"
+
+object *
+getmember(addr, mlist, name)
+	char *addr;
+	struct memberlist *mlist;
+	char *name;
+{
+	struct memberlist *l;
+	
+	for (l = mlist; l->name != NULL; l++) {
+		if (strcmp(l->name, name) == 0) {
+			object *v;
+			addr += l->offset;
+			switch (l->type) {
+			case T_SHORT:
+				v = newintobject((long) *(short*)addr);
+				break;
+			case T_INT:
+				v = newintobject((long) *(int*)addr);
+				break;
+			case T_LONG:
+				v = newintobject(*(long*)addr);
+				break;
+			case T_FLOAT:
+				v = newfloatobject((double)*(float*)addr);
+				break;
+			case T_DOUBLE:
+				v = newfloatobject(*(double*)addr);
+				break;
+			case T_STRING:
+				if (*(char**)addr == NULL) {
+					INCREF(None);
+					v = None;
+				}
+				else
+					v = newstringobject(*(char**)addr);
+				break;
+			case T_OBJECT:
+				v = *(object **)addr;
+				if (v == NULL)
+					v = None;
+				INCREF(v);
+				break;
+			default:
+				err_setstr(SystemError, "bad memberlist type");
+				v = NULL;
+			}
+			return v;
+		}
+	}
+	
+	err_setstr(NameError, name);
+	return NULL;
+}
+
+int
+setmember(addr, mlist, name, v)
+	char *addr;
+	struct memberlist *mlist;
+	char *name;
+	object *v;
+{
+	struct memberlist *l;
+	
+	for (l = mlist; l->name != NULL; l++) {
+		if (strcmp(l->name, name) == 0) {
+			if (l->readonly || l->type == T_STRING) {
+				err_setstr(RuntimeError, "readonly attribute");
+				return -1;
+			}
+			addr += l->offset;
+			switch (l->type) {
+			case T_SHORT:
+				if (!is_intobject(v)) {
+					err_badarg();
+					return -1;
+				}
+				*(short*)addr = getintvalue(v);
+				break;
+			case T_INT:
+				if (!is_intobject(v)) {
+					err_badarg();
+					return -1;
+				}
+				*(int*)addr = getintvalue(v);
+				break;
+			case T_LONG:
+				if (!is_intobject(v)) {
+					err_badarg();
+					return -1;
+				}
+				*(long*)addr = getintvalue(v);
+				break;
+			case T_FLOAT:
+				if (is_intobject(v))
+					*(float*)addr = getintvalue(v);
+				else if (is_floatobject(v))
+					*(float*)addr = getfloatvalue(v);
+				else {
+					err_badarg();
+					return -1;
+				}
+				break;
+			case T_DOUBLE:
+				if (is_intobject(v))
+					*(double*)addr = getintvalue(v);
+				else if (is_floatobject(v))
+					*(double*)addr = getfloatvalue(v);
+				else {
+					err_badarg();
+					return -1;
+				}
+				break;
+			case T_OBJECT:
+				XDECREF(*(object **)addr);
+				XINCREF(v);
+				*(object **)addr = v;
+				break;
+			default:
+				err_setstr(SystemError, "bad memberlist type");
+				return -1;
+			}
+			return 0;
+		}
+	}
+	
+	err_setstr(NameError, name);
+	return NULL;
+}