| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| using System; |
| using System.Text; |
| |
| namespace uno |
| { |
| |
| /** This class can be used as a base class for UNO objects. |
| It implements the capability to be kept weakly |
| (unoidl.com.sun.star.uno.XWeak) and it implements |
| unoidl.com.sun.star.lang.XTypeProvider which is necessary for |
| using the object from StarBasic. |
| */ |
| public struct Any |
| { |
| private object _value; |
| private Type _type; |
| |
| public static Any VOID = new Any(typeof(void), null); |
| |
| private static void checkArgs(Type type, Object value) |
| { |
| //value can only be null if type == void |
| if (type == null |
| || (value == null |
| && type != typeof(void) |
| && type != typeof(object) |
| && type.IsInterface == false)) |
| throw new System.Exception( |
| "uno.Any: Constructor called with illegal arguments!"); |
| //If value is a polymorphic struct then type must be |
| //uno.Polymorphic |
| if (value != null) |
| { |
| TypeParametersAttribute t = (TypeParametersAttribute) Attribute.GetCustomAttribute( |
| value.GetType(), typeof(TypeParametersAttribute)); |
| if (t != null && !(type is PolymorphicType)) |
| throw new System.Exception( |
| "uno.Any: The value has a polymorphic type but the type argument is not " + |
| "uno.PolymorphicType. Please use the constructor Any(Type, object) and " + |
| "supply a uno.PolymorphicType as type argument!"); |
| } |
| } |
| |
| /** constructs an instance. |
| |
| <p>If the arguments ar invalid then an exception is thrown.</p> |
| @exception System.Exception |
| */ |
| public Any(Type type, object value) |
| { |
| checkArgs(type, value); |
| _type = type; |
| _value = value; |
| } |
| |
| /** sets the type and value. |
| <p>If the arguments ar invalid then an exception is thrown.</p> |
| @exception System.Exception |
| */ |
| public void setValue(Type type, object value) |
| { |
| checkArgs(type, value); |
| _type = type; |
| _value = value; |
| } |
| |
| public Type Type |
| { |
| get |
| { |
| if (_type == null) |
| _type = typeof(void); |
| return _type; |
| } |
| } |
| |
| public Object Value |
| { |
| get |
| { |
| return _value; |
| } |
| } |
| |
| public Any(char value): this(typeof(char), value) |
| { |
| } |
| |
| public Any(bool value): this(typeof(bool), value) |
| { |
| } |
| |
| public Any(byte value): this(typeof(byte), value) |
| { |
| } |
| |
| public Any(short value): this(typeof(short), value) |
| { |
| } |
| |
| public Any(ushort value): this(typeof(ushort), value) |
| { |
| } |
| |
| public Any(int value): this(typeof(int), value) |
| { |
| } |
| |
| public Any(uint value): this(typeof(uint), value) |
| { |
| } |
| |
| public Any(long value): this(typeof(long), value) |
| { |
| } |
| |
| public Any(ulong value): this(typeof(ulong), value) |
| { |
| } |
| |
| public Any(float value): this(typeof(float), value) |
| { |
| } |
| |
| public Any(double value): this(typeof(double), value) |
| { |
| } |
| |
| public Any(Type value): this(typeof(Type), value) |
| { |
| } |
| |
| public Any(string value): this(typeof(string), value) |
| { |
| } |
| |
| public override string ToString() |
| { |
| StringBuilder msg = new StringBuilder("uno.Any { Type= "); |
| msg.Append(Type.ToString()); |
| msg.Append(", Value="); |
| msg.Append(Value.ToString()); |
| msg.Append("}"); |
| return msg.ToString(); |
| } |
| |
| public bool hasValue() |
| { |
| if (Type == null || Type == typeof(void)) |
| return false; |
| return true; |
| } |
| |
| public override bool Equals(object obj) |
| { |
| if (obj != null) |
| { |
| try |
| { |
| return Equals((Any) obj); |
| } |
| catch (InvalidCastException) |
| { |
| } |
| } |
| return false; |
| } |
| |
| public bool Equals(Any obj) |
| { |
| return Type.Equals(obj.Type) |
| && (Value == null ? |
| obj.Value == null : |
| Value.Equals(obj.Value)); |
| } |
| |
| public override int GetHashCode() |
| { |
| return Type.GetHashCode() ^ (Value != null ? Value.GetHashCode() : 0); |
| } |
| } |
| |
| } |
| |