objc4-437.tar.gz

[apple/objc4.git] / test / layout.m

diff --git a/test/layout.m b/test/layout.m
new file mode 100644 (file)
index 0000000..181e47d
--- /dev/null
+++ b/test/layout.m
@@ -0,0 +1,94 @@
+#include "test.h"
+#include <string.h>
+#include <objc/objc-runtime.h>
+
+@class NSObject;
+
+void printlayout(const char *name, const char *layout)
+{
+    testprintf("%s: ", name);
+
+    if (!layout) { 
+        testprintf("NULL\n");
+        return;
+    }
+
+    const char *c;
+    for (c = layout; *c; c++) {
+        testprintf("%02x ", *c);
+    }
+
+    testprintf("00\n");
+}
+
+
+@interface Super { id isa; } @end
+@implementation Super @end
+
+
+// strong: 0c 00  (0a00 without structs)
+// weak: NULL
+@interface AllScanned : Super { 
+    id id1;
+    NSObject *o1;
+    __strong void *v1;
+    __strong intptr_t i1;
+    __strong long l1;
+    /* fixme
+    struct {
+        id id1;
+        id id2;
+    } str;
+    */
+    id arr1[4];
+} 
+@end
+@implementation AllScanned @end
+
+// strong: 00
+// weak: 1b 00 (18 00 without structs)
+@interface AllWeak : Super {
+    __weak id id1;
+    __weak NSObject *o1;
+    __weak void *v1;
+    __weak intptr_t i1;
+    __weak long l1;
+    /* fixme
+    struct {
+        __weak id id1;
+        __weak id id2;
+    } str; 
+    */
+    __weak id arr1[4];
+}
+@end
+@implementation AllWeak @end
+
+// strong: ""
+// weak: NULL
+@interface NoScanned { long i;  } @end
+@implementation NoScanned @end
+
+int main() 
+{
+    const char *layout;
+
+    layout = class_getIvarLayout(objc_getClass("AllScanned"));
+    printlayout("AllScanned", layout);
+    layout = class_getWeakIvarLayout(objc_getClass("AllScanned"));
+    printlayout("AllScanned weak", layout);
+    // testassert(0 == strcmp(layout, "\x0a"));
+
+    layout = class_getIvarLayout(objc_getClass("AllWeak"));
+    printlayout("AllWeak", layout);
+    layout = class_getWeakIvarLayout(objc_getClass("AllWeak"));
+    printlayout("AllWeak weak", layout);
+    // testassert(0 == strcmp(layout, ""));
+
+    layout = class_getIvarLayout(objc_getClass("NoScanned"));
+    printlayout("NoScanned", layout);
+    // testassert(0 == strcmp(layout, ""));
+
+    succeed(__FILE__);
+    return 0;
+}