//
// Author:
//   Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2015 Jb Evain
// Copyright (c) 2008 - 2011 Novell, Inc.
//
// Licensed under the MIT/X11 license.
//

using System;
using System.Collections.Generic;
using System.Linq;

namespace Mono.Cecil.Rocks {

#if INSIDE_ROCKS
	public
#endif
	static class TypeDefinitionRocks {

		public static IEnumerable<MethodDefinition> GetConstructors (this TypeDefinition self)
		{
			if (self == null)
				throw new ArgumentNullException ("self");

			if (!self.HasMethods)
				return Empty<MethodDefinition>.Array;

			return self.Methods.Where (method => method.IsConstructor);
		}

		public static MethodDefinition GetStaticConstructor (this TypeDefinition self)
		{
			if (self == null)
				throw new ArgumentNullException ("self");

			if (!self.HasMethods)
				return null;

			return self.GetConstructors ().FirstOrDefault (ctor => ctor.IsStatic);
		}

		public static IEnumerable<MethodDefinition> GetMethods (this TypeDefinition self)
		{
			if (self == null)
				throw new ArgumentNullException ("self");

			if (!self.HasMethods)
				return Empty<MethodDefinition>.Array;

			return self.Methods.Where (method => !method.IsConstructor);
		}

		public static TypeReference GetEnumUnderlyingType (this TypeDefinition self)
		{
			if (self == null)
				throw new ArgumentNullException ("self");
			if (!self.IsEnum)
				throw new ArgumentException ();

			return Mixin.GetEnumUnderlyingType (self);
		}
	}
}