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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/objc.dg/foreach-4.m
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diff --git a/gcc/testsuite/objc.dg/foreach-4.m b/gcc/testsuite/objc.dg/foreach-4.m
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+/* Test basic Objective-C foreach syntax. This tests iterations, with
+ the declaration syntax 'for (id object in array) statements'
+*/
+/* { dg-do run } */
+/* { dg-skip-if "No NeXT fast enum. pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
+/* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+/* { dg-options "-mno-constant-cfstrings" { target *-*-darwin* } } */
+/* { dg-additional-sources "../objc-obj-c++-shared/Object1.m ../objc-obj-c++-shared/nsconstantstring-class-impl.m" } */
+
+#import "../objc-obj-c++-shared/Object1.h"
+#import "../objc-obj-c++-shared/next-mapping.h"
+#ifndef __NEXT_RUNTIME__
+#include <objc/NXConstStr.h>
+#else
+#include "../objc-obj-c++-shared/nsconstantstring-class.h"
+#endif
+
+extern int printf (const char *, ...);
+#include <stdlib.h>
+
+/*
+struct __objcFastEnumerationState
+{
+ unsigned long state;
+ id *itemsPtr;
+ unsigned long *mutationsPtr;
+ unsigned long extra[5];
+};
+*/
+
+ /* A mini-array implementation that can be used to test fast
+ enumeration. You create the array with some objects; you can
+ mutate the array, and you can fast-enumerate it.
+ */
+@interface MyArray : Object
+{
+ unsigned int length;
+ id *objects;
+ unsigned long mutated;
+}
+- (id) initWithLength: (unsigned int)l objects: (id *)o;
+- (void) mutate;
+- (unsigned long)countByEnumeratingWithState: (struct __objcFastEnumerationState *)state
+ objects:(id *)stackbuf
+ count:(unsigned long)len;
+@end
+
+@implementation MyArray : Object
+- (id) initWithLength: (unsigned int)l
+ objects: (id *)o
+{
+ length = l;
+ objects = o;
+ mutated = 0;
+ return self;
+}
+- (void) mutate
+{
+ mutated = 1;
+}
+- (unsigned long)countByEnumeratingWithState: (struct __objcFastEnumerationState*)state
+ objects: (id*)stackbuf
+ count: (unsigned long)len
+{
+ unsigned long i, batch_size;
+
+ /* We keep how many objects we served in the state->state counter. So the next batch
+ will contain up to length - state->state objects. */
+ batch_size = length - state->state;
+
+ /* Make obvious adjustments. */
+ if (batch_size < 0)
+ batch_size = 0;
+
+ if (batch_size > len)
+ batch_size = len;
+
+ /* Copy the objects. */
+ for (i = 0; i < batch_size; i++)
+ stackbuf[i] = objects[i];
+
+ state->state += batch_size;
+ state->itemsPtr = stackbuf;
+ state->mutationsPtr = &mutated;
+
+ return batch_size;
+}
+@end
+
+int main (void)
+{
+ MyArray *array;
+ int test_variable, counter, i;
+ id *objects;
+
+ array = [[MyArray alloc] initWithLength: 0
+ objects: NULL];
+
+ /* Test that an empty array does nothing. */
+ for (id object in array)
+ abort ();
+
+ /* Test iterating over 1 object. */
+ objects = malloc (sizeof (id) * 1);
+ objects[0] = @"One Object";
+
+ array = [[MyArray alloc] initWithLength: 1
+ objects: objects];
+
+ for (id object in array)
+ printf ("%p\n", object);
+
+ /* Test iterating over 20 objects. */
+ objects = malloc (sizeof (id) * 20);
+ for (i = 0; i < 20; i++)
+ objects[i] = @"object";
+
+ array = [[MyArray alloc] initWithLength: 20
+ objects: objects];
+
+ for (id object in array)
+ printf ("%p\n", object);
+
+ /* Test iterating over 200 objects. */
+ objects = malloc (sizeof (id) * 200);
+ for (i = 0; i < 200; i++)
+ objects[i] = @"object";
+
+ array = [[MyArray alloc] initWithLength: 200
+ objects: objects];
+
+ counter = 0;
+ for (id object in array)
+ {
+ if (object != nil)
+ counter++;
+ }
+
+ if (counter != 200)
+ abort ();
+
+ printf ("Counter was %d (should be 200)\n", counter);
+
+ /* Test iterating again over the same array. */
+ counter = 0;
+ for (id object in array)
+ {
+ if (object != nil)
+ counter++;
+ }
+
+ if (counter != 200)
+ abort ();
+
+ printf ("Counter was %d (should be 200)\n", counter);
+
+ /* Test nested iterations. */
+ objects = malloc (sizeof (id) * 20);
+ for (i = 0; i < 20; i++)
+ objects[i] = @"object";
+
+ array = [[MyArray alloc] initWithLength: 20
+ objects: objects];
+ counter = 0;
+ for (id object in array)
+ {
+ for (id another_object in array)
+ if (another_object != nil)
+ counter++;
+ }
+
+ printf ("Counter was %d (should be 400)\n", counter);
+
+ if (counter != 400)
+ abort ();
+
+ /* Test 'continue'. */
+ objects = malloc (sizeof (id) * 20);
+ for (i = 0; i < 20; i++)
+ objects[i] = @"object";
+
+ array = [[MyArray alloc] initWithLength: 20
+ objects: objects];
+ counter = 0;
+ for (id object in array)
+ {
+ if (counter == 15)
+ continue;
+
+ counter++;
+ }
+
+ printf ("Counter was %d (should be 15)\n", counter);
+
+ if (counter != 15)
+ abort ();
+
+ /* Test 'break'. */
+ objects = malloc (sizeof (id) * 20);
+ for (i = 0; i < 20; i++)
+ objects[i] = @"object";
+
+ array = [[MyArray alloc] initWithLength: 20
+ objects: objects];
+ counter = 0;
+ for (id object in array)
+ {
+ counter++;
+
+ if (counter == 15)
+ break;
+ }
+
+ printf ("Counter was %d (should be 15)\n", counter);
+
+ if (counter != 15)
+ abort ();
+
+ /* Test 'break' and 'continue' in nested iterations. */
+ objects = malloc (sizeof (id) * 20);
+ for (i = 0; i < 20; i++)
+ objects[i] = @"object";
+
+ array = [[MyArray alloc] initWithLength: 20
+ objects: objects];
+ counter = 0;
+ for (id object in array)
+ {
+ int local_counter = 0;
+
+ /* Each internal loop should increase counter by 24. */
+ for (id another_object in array)
+ {
+ local_counter++;
+
+ if (local_counter == 10)
+ {
+ counter = counter + 20;
+ break;
+ }
+
+ if (local_counter >= 5)
+ continue;
+
+ counter++;
+ }
+
+ /* Exit after 4 iterations. */
+ if (counter == 96)
+ break;
+ }
+
+ printf ("Counter was %d (should be 96)\n", counter);
+
+ if (counter != 96)
+ abort ();
+
+ /* Test that C for loops still work. */
+ test_variable = 0;
+
+ for (counter = 0; counter < 4; counter++)
+ test_variable++;
+
+ if (test_variable != 4)
+ abort ();
+
+ return 0;
+}