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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
using System.Diagnostics.Contracts;
namespace ICSharpCode.NRefactory.TypeSystem
{
/// <summary>
/// Represents a variable (name/type pair).
/// </summary>
#if WITH_CONTRACTS
[ContractClass(typeof(IVariableContract))]
#endif
public interface IVariable
{
/// <summary>
/// Gets the name of the variable.
/// </summary>
string Name { get; }
/// <summary>
/// Gets the declaration region of the variable.
/// </summary>
DomRegion Region { get; }
/// <summary>
/// Gets the type of the variable.
/// </summary>
IType Type { get; }
/// <summary>
/// Gets whether this variable is a constant (C#-like const).
/// </summary>
bool IsConst { get; }
/// <summary>
/// If this field is a constant, retrieves the value.
/// For parameters, this is the default value.
/// </summary>
object ConstantValue { get; }
}
#if WITH_CONTRACTS
[ContractClassFor(typeof(IVariable))]
abstract class IVariableContract : IVariable
{
string IVariable.Name {
get {
Contract.Ensures(Contract.Result<string>() != null);
return null;
}
}
ITypeReference IVariable.Type {
get {
Contract.Ensures(Contract.Result<ITypeReference>() != null);
return null;
}
}
bool IVariable.IsConst {
get {
IVariable @this = this;
Contract.Ensures(Contract.Result<bool>() == (@this.ConstantValue != null));
return false;
}
}
object IVariable.ConstantValue {
get { return null; }
}
}
#endif
}
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