source: trunk/ab5.0/ablib/src/Classes/System/Object.ab

Namespace System

    Class Object

    Public

        Sub Object()
        End Sub
        Sub ~Object()
        End Sub

        /*
        @brief 2つのオブジェクトが等しいかどうかを判断する。
        標準の実装はReferenceEqualsを用いて参照の等価を判断基準としている。
        */
        Virtual Function Equals( object As Object ) As Boolean
            Return ReferenceEquals(This, object)
        End Function
        
        Static Function Equals( objectA As Object, objectB As Object ) As Boolean
            If ActiveBasic.IsNothing(objectA) Then
                Return ActiveBasic.IsNothing(objectB)
            Else
                Return objectA.Equals(objectB)
            End If
        End Function

        ' 参照先が等しいか判断する
        Static Function ReferenceEquals(objectA As Object, objectB As Object) As Boolean
            Return ObjPtr(objectA) = ObjPtr(objectB)
        End Function

        ' ハッシュコードを取得する
        Virtual Function GetHashCode() As Long
            Return ObjPtr( This ) As Long
        End Function

        ' オブジェクトに関係する文字列を返す
        Virtual Function ToString() As String
            Return GetType().Name
        End Function

    /*
        Function Operator Downcast() As VoidPtr
        End Function
    */


        '----------------------------------------------------------------
        ' 実行時型情報
        '----------------------------------------------------------------

    Private
        _system_object_member_typeInfo As TypeInfo

    Public
        Sub _System_SetType( typeInfo As TypeInfo )
            If ActiveBasic.Core._System_TypeBase.IsReady() = False Then
                Return
            End If

            This._system_object_member_typeInfo = typeInfo
        End Sub

        Virtual Function GetType() As TypeInfo
            Return _system_object_member_typeInfo
        End Function

    End Class

End Namespace