Objective-C/C++ : Handle parsing @property 'class' attribute.

This attribute states that a property is one manipulated by class
methods (it requires a static variable and the setter and getter
must be provided explicitly, they cannot be @synthesized).

gcc/c-family/ChangeLog:

	* c-common.h (OBJC_IS_PATTR_KEYWORD): Add class to the list
	of keywords accepted in @property attribute contexts.
	* c-objc.h (enum objc_property_attribute_group): Add
	OBJC_PROPATTR_GROUP_CLASS.
	(enum objc_property_attribute_kind): Add
	OBJC_PROPERTY_ATTR_CLASS.

gcc/cp/ChangeLog:

	* parser.c (cp_parser_objc_at_property_declaration): Handle
	class keywords in @property attribute context.

gcc/objc/ChangeLog:

	* objc-act.c (objc_prop_attr_kind_for_rid): Handle class
	attribute.
	(objc_add_property_declaration): Likewise.
	* objc-act.h (PROPERTY_CLASS): Record class attribute state.

gcc/testsuite/ChangeLog:

	* obj-c++.dg/property/at-property-4.mm: Test handling class
	attributes.
	* objc.dg/property/at-property-4.m: Likewise.

1 files changed, 2 insertions, 0 deletions

diff --git a/gcc/c-family/c-objc.h b/gcc/c-family/c-objc.h
index a2ca112..6e96731 100644
--- a/gcc/c-family/c-objc.h
+++ b/gcc/c-family/c-objc.h
@@ -44,6 +44,7 @@ enum objc_property_attribute_group
   OBJC_PROPATTR_GROUP_READWRITE,
   OBJC_PROPATTR_GROUP_ASSIGN,
   OBJC_PROPATTR_GROUP_ATOMIC,
+  OBJC_PROPATTR_GROUP_CLASS,
   OBJC_PROPATTR_GROUP_MAX
 };
 
@@ -59,6 +60,7 @@ enum objc_property_attribute_kind
   OBJC_PROPERTY_ATTR_COPY =		( 7 << 8)|OBJC_PROPATTR_GROUP_ASSIGN,
   OBJC_PROPERTY_ATTR_ATOMIC =		( 8 << 8)|OBJC_PROPATTR_GROUP_ATOMIC,
   OBJC_PROPERTY_ATTR_NONATOMIC =	( 9 << 8)|OBJC_PROPATTR_GROUP_ATOMIC,
+  OBJC_PROPERTY_ATTR_CLASS =		(16 << 8)|OBJC_PROPATTR_GROUP_CLASS,
   OBJC_PROPERTY_ATTR_MAX =		(255 << 8|OBJC_PROPATTR_GROUP_MAX)
 };