gcc/testsuite/obj-c++.dg/property/dotsyntax-17.mm

   1 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
   2 /* { dg-do compile } */
   3
   4 /* Test errors with the dot-syntax with pre/post increment and decrement.  */
   5
   6 #include <stdlib.h>
   7 #include <objc/objc.h>
   8 #include <objc/runtime.h>
   9
  10 @interface MyRootClass
  11 {
  12   Class isa;
  13   int count;
  14   int a;
  15 }
  16 + (id) initialize;
  17 + (id) alloc;
  18 - (id) init;
  19 @property (assign, readonly) int count;
  20 - (void) setWriteOnlyCount: (int)value;
  21 @end
  22
  23 @implementation MyRootClass
  24 + (id) initialize { return self; }
  25 + (id) alloc { return class_createInstance (self, 0); }
  26 - (id) init { return self; }
  27 @synthesize count;
  28 - (void) setWriteOnlyCount: (int)value
  29 {
  30   a = value;
  31 }
  32 @end
  33
  34 int main (void)
  35 {
  36   MyRootClass *object = [[MyRootClass alloc] init];
  37
  38   object.count = 10; /* { dg-error "readonly property cannot be set" } */
  39   if (object.count != 10) /* Ok */
  40     abort ();
  41
  42   /* Test errors when trying to change a readonly property using
  43      pre/post increment/decrement operators.  */
  44   object.count++; /* { dg-error "readonly property cannot be set" } */
  45
  46   ++object.count; /* { dg-error "readonly property cannot be set" } */
  47
  48   object.count--; /* { dg-error "readonly property cannot be set" } */
  49
  50   --object.count; /* { dg-error "readonly property cannot be set" } */
  51
  52   /* Test errors when trying to change something using Objective-C 2.0
  53      dot-syntax but there is a setter but no getter.  */
  54   object.writeOnlyCount = 10; /* Ok */
  55
  56   object.writeOnlyCount++; /* { dg-error "no .writeOnlyCount. getter found" } */
  57
  58   ++object.writeOnlyCount; /* { dg-error "no .writeOnlyCount. getter found" } */
  59
  60   object.writeOnlyCount--; /* { dg-error "no .writeOnlyCount. getter found" } */
  61
  62   --object.writeOnlyCount; /* { dg-error "no .writeOnlyCount. getter found" } */
  63
  64   return 0;
  65 }
  66
  67