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Document why the consumed attributes (consumable, callable_when, et al) are not exposed with a C2x spelling. NFC. 

llvm-svn: 326054
This commit is contained in:
Aaron Ballman 2018-02-25 14:54:25 +00:00
parent 99bfe26a1e
commit d15a39b469
1 changed files with 24 additions and 0 deletions
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24
clang/include/clang/Basic/Attr.td
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@ -2390,6 +2390,9 @@ def LocksExcluded : InheritableAttr {
// C/C++ consumed attributes.
def Consumable : InheritableAttr {
// This attribute does not have a C [[]] spelling because it only appertains
// to C++ struct/class/union.
// FIXME: should this attribute have a CPlusPlus language option?
let Spellings = [Clang<"consumable">];
let Subjects = SubjectList<[CXXRecord]>;
let Args = [EnumArgument<"DefaultState", "ConsumedState",
@ -2399,18 +2402,27 @@ def Consumable : InheritableAttr {
}
def ConsumableAutoCast : InheritableAttr {
// This attribute does not have a C [[]] spelling because it only appertains
// to C++ struct/class/union.
// FIXME: should this attribute have a CPlusPlus language option?
let Spellings = [Clang<"consumable_auto_cast_state">];
let Subjects = SubjectList<[CXXRecord]>;
let Documentation = [Undocumented];
}
def ConsumableSetOnRead : InheritableAttr {
// This attribute does not have a C [[]] spelling because it only appertains
// to C++ struct/class/union.
// FIXME: should this attribute have a CPlusPlus language option?
let Spellings = [Clang<"consumable_set_state_on_read">];
let Subjects = SubjectList<[CXXRecord]>;
let Documentation = [Undocumented];
}
def CallableWhen : InheritableAttr {
// This attribute does not have a C [[]] spelling because it only appertains
// to C++ function (but doesn't require it to be a member function).
// FIXME: should this attribute have a CPlusPlus language option?
let Spellings = [Clang<"callable_when">];
let Subjects = SubjectList<[CXXMethod]>;
let Args = [VariadicEnumArgument<"CallableStates", "ConsumedState",
@ -2420,6 +2432,9 @@ def CallableWhen : InheritableAttr {
}
def ParamTypestate : InheritableAttr {
// This attribute does not have a C [[]] spelling because it only appertains
// to a parameter whose type is a consumable C++ class.
// FIXME: should this attribute have a CPlusPlus language option?
let Spellings = [Clang<"param_typestate">];
let Subjects = SubjectList<[ParmVar]>;
let Args = [EnumArgument<"ParamState", "ConsumedState",
@ -2429,6 +2444,9 @@ def ParamTypestate : InheritableAttr {
}
def ReturnTypestate : InheritableAttr {
// This attribute does not have a C [[]] spelling because it only appertains
// to a parameter or function return type that is a consumable C++ class.
// FIXME: should this attribute have a CPlusPlus language option?
let Spellings = [Clang<"return_typestate">];
let Subjects = SubjectList<[Function, ParmVar]>;
let Args = [EnumArgument<"State", "ConsumedState",
@ -2438,6 +2456,9 @@ def ReturnTypestate : InheritableAttr {
}
def SetTypestate : InheritableAttr {
// This attribute does not have a C [[]] spelling because it only appertains
// to C++ function (but doesn't require it to be a member function).
// FIXME: should this attribute have a CPlusPlus language option?
let Spellings = [Clang<"set_typestate">];
let Subjects = SubjectList<[CXXMethod]>;
let Args = [EnumArgument<"NewState", "ConsumedState",
@ -2447,6 +2468,9 @@ def SetTypestate : InheritableAttr {
}
def TestTypestate : InheritableAttr {
// This attribute does not have a C [[]] spelling because it only appertains
// to C++ function (but doesn't require it to be a member function).
// FIXME: should this attribute have a CPlusPlus language option?
let Spellings = [Clang<"test_typestate">];
let Subjects = SubjectList<[CXXMethod]>;
let Args = [EnumArgument<"TestState", "ConsumedState",