MsgPack.Serialization.EmittingSerializers.SerializerEmitter.DefineMethod C# (CSharp) Method

		private ILMethodConctext DefineMethod( string methodName, bool isOverride, bool isStatic, Type returnType, Type[] parameterTypes )
		{
			if ( this._methodTable.ContainsKey( methodName ) )
			{
				throw new InvalidOperationException( String.Format( CultureInfo.CurrentCulture, "Method {0} is already defined.", methodName ) );
			}

#if DEBUG
			Contract.Assert( this._typeBuilder.BaseType != null, "this._typeBuilder.BaseType != null" );
#endif // DEBUG
			MethodBuilder builder;
			if ( isOverride )
			{
				var baseMethod =
					this._typeBuilder.BaseType.GetRuntimeMethod(
						methodName
					);
				builder =
					this._typeBuilder.DefineMethod(
						baseMethod.Name,
						( baseMethod.Attributes | MethodAttributes.Final ) & ( ~MethodAttributes.Abstract ),
						baseMethod.CallingConvention,
						baseMethod.ReturnType,
						baseMethod.GetParameterTypes()
					);
				this._typeBuilder.DefineMethodOverride(
					builder,
					baseMethod
				);
			}
			else
			{
				builder =
					this._typeBuilder.DefineMethod(
						methodName,
						MethodAttributes.Private | MethodAttributes.HideBySig | ( isStatic ? MethodAttributes.Static : 0 ),
						isStatic ? CallingConventions.Standard : CallingConventions.HasThis,
						returnType,
						parameterTypes
					);
			}

			this._methodTable[ methodName ] = builder;

			return
				new ILMethodConctext(
					this.GetILGenerator( builder, parameterTypes ),
					builder,
					parameterTypes
				);
		}