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* [gcc r11-4825] Objective-C/C++ : Handle parsing @property 'class' attribute.
@ 2020-11-08 11:30 Iain D Sandoe
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From: Iain D Sandoe @ 2020-11-08 11:30 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:b642fca1c31b2e2175e0860daf32b4ee0d918085
commit r11-4825-gb642fca1c31b2e2175e0860daf32b4ee0d918085
Author: Iain Sandoe <iain@sandoe.co.uk>
Date: Wed Nov 4 23:52:12 2020 +0000
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.
Diff:
---
gcc/c-family/c-common.h | 6 +++--
gcc/c-family/c-objc.h | 2 ++
gcc/cp/parser.c | 4 ++++
gcc/objc/objc-act.c | 10 ++++++++
gcc/objc/objc-act.h | 4 ++++
gcc/testsuite/obj-c++.dg/property/at-property-4.mm | 27 +++++++++++++---------
gcc/testsuite/objc.dg/property/at-property-4.m | 21 ++++++++++-------
7 files changed, 53 insertions(+), 21 deletions(-)
diff --git a/gcc/c-family/c-common.h b/gcc/c-family/c-common.h
index 7e2cd5342aa..bfcc279609c 100644
--- a/gcc/c-family/c-common.h
+++ b/gcc/c-family/c-common.h
@@ -275,9 +275,11 @@ enum rid
((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
(unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
+/* Keywords permitted in an @property attribute context. */
#define OBJC_IS_PATTR_KEYWORD(rid) \
- ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
- (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)
+ ((((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
+ (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)) \
+ || rid == RID_CLASS)
/* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as
'class') which are shared in a subtle way between Objective-C and
diff --git a/gcc/c-family/c-objc.h b/gcc/c-family/c-objc.h
index a2ca112dcc6..6e96731882b 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)
};
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index c4c672efa09..323d7424a83 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -34052,6 +34052,10 @@ cp_parser_objc_at_property_declaration (cp_parser *parser)
enum rid keyword;
if (token->type == CPP_NAME)
keyword = C_RID_CODE (token->u.value);
+ else if (token->type == CPP_KEYWORD
+ && token->keyword == RID_CLASS)
+ /* Account for accepting the 'class' keyword in this context. */
+ keyword = RID_CLASS;
else
keyword = RID_MAX; /* By definition, an unknown property. */
cp_lexer_consume_token (parser->lexer);
diff --git a/gcc/objc/objc-act.c b/gcc/objc/objc-act.c
index 2dad46aa77e..b9ed32d51d0 100644
--- a/gcc/objc/objc-act.c
+++ b/gcc/objc/objc-act.c
@@ -825,6 +825,7 @@ objc_prop_attr_kind_for_rid (enum rid prop_rid)
case RID_PROPATOMIC: return OBJC_PROPERTY_ATTR_ATOMIC;
case RID_NONATOMIC: return OBJC_PROPERTY_ATTR_NONATOMIC;
+ case RID_CLASS: return OBJC_PROPERTY_ATTR_CLASS;
}
}
@@ -986,6 +987,14 @@ objc_add_property_declaration (location_t location, tree decl,
gcc_unreachable ();
}
+ /* An attribute that indicates this property manipulates a class variable.
+ In this case, both the variable and the getter/setter must be provided
+ by the user. */
+ bool property_class = false;
+ if (attrs[OBJC_PROPATTR_GROUP_CLASS])
+ property_nonatomic = attrs[OBJC_PROPATTR_GROUP_CLASS]->prop_kind
+ == OBJC_PROPERTY_ATTR_CLASS;
+
/* TODO: Check that the property type is an Objective-C object or a
"POD". */
@@ -1273,6 +1282,7 @@ objc_add_property_declaration (location_t location, tree decl,
PROPERTY_SETTER_NAME (property_decl) = property_setter_ident;
PROPERTY_READONLY (property_decl) = property_readonly;
PROPERTY_NONATOMIC (property_decl) = property_nonatomic;
+ PROPERTY_CLASS (property_decl) = property_class;
PROPERTY_ASSIGN_SEMANTICS (property_decl) = property_assign_semantics;
PROPERTY_IVAR_NAME (property_decl) = NULL_TREE;
PROPERTY_DYNAMIC (property_decl) = 0;
diff --git a/gcc/objc/objc-act.h b/gcc/objc/objc-act.h
index db71b6a265e..5b0433ff0ee 100644
--- a/gcc/objc/objc-act.h
+++ b/gcc/objc/objc-act.h
@@ -137,6 +137,10 @@ enum objc_property_assign_semantics {
#define PROPERTY_OPTIONAL(DECL) \
DECL_LANG_FLAG_5 (PROPERTY_DECL_CHECK (DECL))
+/* PROPERTY_CLASS can be 0 or 1. */
+#define PROPERTY_CLASS(DECL) \
+ DECL_LANG_FLAG_6 (PROPERTY_DECL_CHECK (DECL))
+
/* PROPERTY_REF. A PROPERTY_REF represents an 'object.property'
expression. It is normally used for property access, but when
the Objective-C 2.0 "dot-syntax" (object.component) is used
diff --git a/gcc/testsuite/obj-c++.dg/property/at-property-4.mm b/gcc/testsuite/obj-c++.dg/property/at-property-4.mm
index 31f2eb4336a..f73d70639b6 100644
--- a/gcc/testsuite/obj-c++.dg/property/at-property-4.mm
+++ b/gcc/testsuite/obj-c++.dg/property/at-property-4.mm
@@ -14,17 +14,22 @@
- (void) mySetter2: (int)property;
/* Test that all the new property attributes can be parsed. */
-@property (assign) id property_a;
-@property (copy) id property_b;
-@property (atomic) int property_ca;
-@property (nonatomic) int property_c;
-@property (readonly) int property_d;
-@property (readwrite) int property_e;
-@property (retain) id property_f;
-@property (release) int property_g; /* { dg-error "unknown property attribute" } */
-
-@property (getter=myGetter) int property_h;
-@property (setter=mySetter:) int property_i;
+@property (assign) id property_as_1;
+@property (copy) id property_as_2;
+@property (retain) id property_as_3;
+
+@property (atomic) int property_at_1;
+@property (nonatomic) int property_at_2;
+
+@property (readonly) int property_rw_1;
+@property (readwrite) int property_rw_2;
+
+@property (class) int property_cl_1;
+
+@property (release) int property_err_1; /* { dg-error "unknown property attribute" } */
+
+@property (getter=myGetter) int property_g0;
+@property (setter=mySetter:) int property_s0;
/* Now test various problems. */
diff --git a/gcc/testsuite/objc.dg/property/at-property-4.m b/gcc/testsuite/objc.dg/property/at-property-4.m
index 31f2eb4336a..0e905db0eb4 100644
--- a/gcc/testsuite/objc.dg/property/at-property-4.m
+++ b/gcc/testsuite/objc.dg/property/at-property-4.m
@@ -14,14 +14,19 @@
- (void) mySetter2: (int)property;
/* Test that all the new property attributes can be parsed. */
-@property (assign) id property_a;
-@property (copy) id property_b;
-@property (atomic) int property_ca;
-@property (nonatomic) int property_c;
-@property (readonly) int property_d;
-@property (readwrite) int property_e;
-@property (retain) id property_f;
-@property (release) int property_g; /* { dg-error "unknown property attribute" } */
+@property (assign) id property_as_1;
+@property (copy) id property_as_2;
+@property (retain) id property_as_3;
+
+@property (atomic) int property_at_1;
+@property (nonatomic) int property_at_2;
+
+@property (readonly) int property_rw_1;
+@property (readwrite) int property_rw_2;
+
+@property (class) int property_cl_1;
+
+@property (release) int property_err_1; /* { dg-error "unknown property attribute" } */
@property (getter=myGetter) int property_h;
@property (setter=mySetter:) int property_i;
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2020-11-08 11:30 [gcc r11-4825] Objective-C/C++ : Handle parsing @property 'class' attribute Iain D Sandoe
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