diff options
Diffstat (limited to 'contrib/libcxxrt/typeinfo.h')
| -rw-r--r-- | contrib/libcxxrt/typeinfo.h | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/contrib/libcxxrt/typeinfo.h b/contrib/libcxxrt/typeinfo.h new file mode 100644 index 0000000..1ee1fe5 --- /dev/null +++ b/contrib/libcxxrt/typeinfo.h @@ -0,0 +1,200 @@ +#include <stddef.h> +#include "abi_namespace.h" +#include "typeinfo" + +namespace ABI_NAMESPACE +{ + /** + * Primitive type info, for intrinsic types. + */ + struct __fundamental_type_info : public std::type_info + { + virtual ~__fundamental_type_info(); + }; + /** + * Type info for arrays. + */ + struct __array_type_info : public std::type_info + { + virtual ~__array_type_info(); + }; + /** + * Type info for functions. + */ + struct __function_type_info : public std::type_info + { + virtual ~__function_type_info(); + }; + /** + * Type info for enums. + */ + struct __enum_type_info : public std::type_info + { + virtual ~__enum_type_info(); + }; + + /** + * Base class for class type info. Used only for tentative definitions. + */ + struct __class_type_info : public std::type_info + { + virtual ~__class_type_info(); + /** + * Function implementing dynamic casts. + */ + virtual void *cast_to(void *obj, + const struct __class_type_info *other) const; + /** + * Function returning whether a cast from this type to another type is + * possible. + */ + virtual bool can_cast_to(const struct __class_type_info *other) const; + }; + + /** + * Single-inheritance class type info. This is used for classes containing + * a single non-virtual base class at offset 0. + */ + struct __si_class_type_info : public __class_type_info + { + virtual ~__si_class_type_info(); + const __class_type_info *__base_type; + virtual void *cast_to(void *obj, const struct __class_type_info *other) const; + virtual bool can_cast_to(const struct __class_type_info *other) const; + }; + + /** + * Type info for base classes. Classes with multiple bases store an array + * of these, one for each superclass. + */ + struct __base_class_type_info + { + const __class_type_info *__base_type; + private: + /** + * The high __offset_shift bits of this store the (signed) offset + * of the base class. The low bits store flags from + * __offset_flags_masks. + */ + long __offset_flags; + /** + * Flags used in the low bits of __offset_flags. + */ + enum __offset_flags_masks + { + /** This base class is virtual. */ + __virtual_mask = 0x1, + /** This base class is public. */ + __public_mask = 0x2, + /** The number of bits reserved for flags. */ + __offset_shift = 8 + }; + public: + /** + * Returns the offset of the base class. + */ + long offset() const + { + return __offset_flags >> __offset_shift; + } + /** + * Returns the flags. + */ + long flags() const + { + return __offset_flags & ((1 << __offset_shift) - 1); + } + /** + * Returns whether this is a public base class. + */ + bool isPublic() const { return flags() & __public_mask; } + /** + * Returns whether this is a virtual base class. + */ + bool isVirtual() const { return flags() & __virtual_mask; } + }; + + /** + * Type info for classes with virtual bases or multiple superclasses. + */ + struct __vmi_class_type_info : public __class_type_info + { + virtual ~__vmi_class_type_info(); + /** Flags describing this class. Contains values from __flags_masks. */ + unsigned int __flags; + /** The number of base classes. */ + unsigned int __base_count; + /** + * Array of base classes - this actually has __base_count elements, not + * 1. + */ + __base_class_type_info __base_info[1]; + + /** + * Flags used in the __flags field. + */ + enum __flags_masks + { + /** The class has non-diamond repeated inheritance. */ + __non_diamond_repeat_mask = 0x1, + /** The class is diamond shaped. */ + __diamond_shaped_mask = 0x2 + }; + virtual void *cast_to(void *obj, const struct __class_type_info *other) const; + virtual bool can_cast_to(const struct __class_type_info *other) const; + }; + + /** + * Base class used for both pointer and pointer-to-member type info. + */ + struct __pbase_type_info : public std::type_info + { + virtual ~__pbase_type_info(); + /** + * Flags. Values from __masks. + */ + unsigned int __flags; + /** + * The type info for the pointee. + */ + const std::type_info *__pointee; + + /** + * Masks used for qualifiers on the pointer. + */ + enum __masks + { + /** Pointer has const qualifier. */ + __const_mask = 0x1, + /** Pointer has volatile qualifier. */ + __volatile_mask = 0x2, + /** Pointer has restrict qualifier. */ + __restrict_mask = 0x4, + /** Pointer points to an incomplete type. */ + __incomplete_mask = 0x8, + /** Pointer is a pointer to a member of an incomplete class. */ + __incomplete_class_mask = 0x10 + }; + }; + + /** + * Pointer type info. + */ + struct __pointer_type_info : public __pbase_type_info + { + virtual ~__pointer_type_info(); + }; + + /** + * Pointer to member type info. + */ + struct __pointer_to_member_type_info : public __pbase_type_info + { + virtual ~__pointer_to_member_type_info(); + /** + * Pointer to the class containing this member. + */ + const __class_type_info *__context; + }; + +} |
