//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_CLANG_AST_OPERATION_KINDS_H
-#define LLVM_CLANG_AST_OPERATION_KINDS_H
+#ifndef LLVM_CLANG_AST_OPERATIONKINDS_H
+#define LLVM_CLANG_AST_OPERATIONKINDS_H
namespace clang {
/// to be reinterpreted as a bit pattern of another type. Generally
/// the operands must have equivalent size and unrelated types.
///
- /// The pointer conversion char* -> int* is a bitcast. Many other
- /// pointer conversions which are "physically" bitcasts are given
- /// special cast kinds.
+ /// The pointer conversion char* -> int* is a bitcast. A conversion
+ /// from any pointer type to a C pointer type is a bitcast unless
+ /// it's actually BaseToDerived or DerivedToBase. A conversion to a
+ /// block pointer or ObjC pointer type is a bitcast only if the
+ /// operand has the same type kind; otherwise, it's one of the
+ /// specialized casts below.
///
/// Vector coercions are bitcasts.
CK_BitCast,
/// reinterpret_casts of l-value expressions to reference types.
/// bool b; reinterpret_cast<char&>(b) = 'a';
CK_LValueBitCast,
-
+
+ /// CK_LValueToRValue - A conversion which causes the extraction of
+ /// an r-value from the operand gl-value. The result of an r-value
+ /// conversion is always unqualified.
+ CK_LValueToRValue,
+
/// CK_NoOp - A conversion which does not affect the type other than
/// (possibly) adding qualifiers.
/// int -> int
/// against the null member pointer.
CK_MemberPointerToBoolean,
+ /// CK_ReinterpretMemberPointer - Reinterpret a member pointer as a
+ /// different kind of member pointer. C++ forbids this from
+ /// crossing between function and object types, but otherwise does
+ /// not restrict it. However, the only operation that is permitted
+ /// on a "punned" member pointer is casting it back to the original
+ /// type, which is required to be a lossless operation (although
+ /// many ABIs do not guarantee this on all possible intermediate types).
+ CK_ReinterpretMemberPointer,
+
/// CK_UserDefinedConversion - Conversion using a user defined type
/// conversion function.
/// struct A { operator int(); }; int i = int(A());
/// (float) ld
CK_FloatingCast,
- /// CK_AnyPointerToObjCPointerCast - Casting any other pointer kind
- /// to an Objective-C pointer.
- CK_AnyPointerToObjCPointerCast,
+ /// CK_CPointerToObjCPointerCast - Casting a C pointer kind to an
+ /// Objective-C pointer.
+ CK_CPointerToObjCPointerCast,
+
+ /// CK_BlockPointerToObjCPointerCast - Casting a block pointer to an
+ /// ObjC pointer.
+ CK_BlockPointerToObjCPointerCast,
- /// CK_AnyPointerToBlockPointerCast - Casting any other pointer kind
- /// to a block pointer.
+ /// CK_AnyPointerToBlockPointerCast - Casting any non-block pointer
+ /// to a block pointer. Block-to-block casts are bitcasts.
CK_AnyPointerToBlockPointerCast,
/// \brief Converting between two Objective-C object types, which
/// \brief Converts from an integral complex to a floating complex.
/// _Complex unsigned -> _Complex float
- CK_IntegralComplexToFloatingComplex
+ CK_IntegralComplexToFloatingComplex,
+
+ /// \brief [ARC] Produces a retainable object pointer so that it may
+ /// be consumed, e.g. by being passed to a consuming parameter.
+ /// Calls objc_retain.
+ CK_ARCProduceObject,
+
+ /// \brief [ARC] Consumes a retainable object pointer that has just
+ /// been produced, e.g. as the return value of a retaining call.
+ /// Enters a cleanup to call objc_release at some indefinite time.
+ CK_ARCConsumeObject,
+
+ /// \brief [ARC] Reclaim a retainable object pointer object that may
+ /// have been produced and autoreleased as part of a function return
+ /// sequence.
+ CK_ARCReclaimReturnedObject,
+
+ /// \brief [ARC] Causes a value of block type to be copied to the
+ /// heap, if it is not already there. A number of other operations
+ /// in ARC cause blocks to be copied; this is for cases where that
+ /// would not otherwise be guaranteed, such as when casting to a
+ /// non-block pointer type.
+ CK_ARCExtendBlockObject,
+
+ /// \brief Converts from _Atomic(T) to T.
+ CK_AtomicToNonAtomic,
+ /// \brief Converts from T to _Atomic(T).
+ CK_NonAtomicToAtomic,
+
+ /// \brief Causes a block literal to by copied to the heap and then
+ /// autoreleased.
+ ///
+ /// This particular cast kind is used for the conversion from a C++11
+ /// lambda expression to a block pointer.
+ CK_CopyAndAutoreleaseBlockObject,
+
+ // Convert a builtin function to a function pointer; only allowed in the
+ // callee of a call expression.
+ CK_BuiltinFnToFnPtr,
+
+ // Convert a zero value for OpenCL event_t initialization.
+ CK_ZeroToOCLEvent,
+
+ // Convert a pointer to a different address space.
+ CK_AddressSpaceConversion
};
-#define CK_Invalid ((CastKind) -1)
+static const CastKind CK_Invalid = static_cast<CastKind>(-1);
enum BinaryOperatorKind {
// Operators listed in order of precedence.
UO_Extension // __extension__ marker.
};
+/// \brief The kind of bridging performed by the Objective-C bridge cast.
+enum ObjCBridgeCastKind {
+ /// \brief Bridging via __bridge, which does nothing but reinterpret
+ /// the bits.
+ OBC_Bridge,
+ /// \brief Bridging via __bridge_transfer, which transfers ownership of an
+ /// Objective-C pointer into ARC.
+ OBC_BridgeTransfer,
+ /// \brief Bridging via __bridge_retain, which makes an ARC object available
+ /// as a +1 C pointer.
+ OBC_BridgeRetained
+};
+
}
#endif
projects / clang / blobdiff