boo-lang /src/Boo.Lang.Compiler/TypeSystem/InternalField.cs

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#region license
// Copyright (c) 2004, Rodrigo B. de Oliveira (rbo@acm.org)
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
// 
//     * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//     * Neither the name of Rodrigo B. de Oliveira nor the names of its
//     contributors may be used to endorse or promote products derived from this
//     software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion

namespace Boo.Lang.Compiler.TypeSystem
{
	using Boo.Lang.Compiler.Ast;

	public class InternalField : InternalEntity<Field>, IField
	{
		private object _staticValue;
		
		public InternalField(Field field) : base(field)
		{
		}
		
		override public EntityType EntityType
		{
			get { return EntityType.Field; }
		}
		
		public IType Type
		{
			get
			{
				return null != _node.Type 
					? TypeSystemServices.GetType(_node.Type)
					: Unknown.Default;
			}
		}
		
		public bool IsLiteral
		{
			get
			{
				//return IsStatic && IsInitOnly && TypeSystemServices.IsPrimitiveTypeOrString(Type);
				return null != _staticValue;
			}
		}
		
		public bool IsInitOnly
		{
			get
			{
				return _node.IsFinal;
			}
		}
		
		public object StaticValue
		{
			get
			{
				return _staticValue;
			}
			
			set
			{
				_staticValue = value;
			}
		}
		
		public Field Field
		{
			get
			{
				return _node;
			}
		}
		
		override public string ToString()
		{
			return FullName;
		}

		public bool IsDuckTyped
		{
			get { return false; }
		}
	}
}
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