Server.Commands.Properties.ConstructFromString C# (CSharp) Méthode

ConstructFromString() public static méthode

public static ConstructFromString ( Type type, object obj, string value, object &constructed ) : string
type System.Type
obj object
value string
constructed object
Résultat string
		public static string ConstructFromString( Type type, object obj, string value, ref object constructed )
		{
			object toSet;
			bool isSerial = IsSerial( type );

			if ( isSerial ) // mutate into int32
				type = m_NumericTypes[4];

			if ( value == "(-null-)" && !type.IsValueType )
				value = null;

			if ( IsEnum( type ) )
			{
				try
				{
					toSet = Enum.Parse( type, value, true );
				}
				catch
				{
					return "That is not a valid enumeration member.";
				}
			}
			else if ( IsType( type ) )
			{
				try
				{
					toSet = ScriptCompiler.FindTypeByName( value );

					if ( toSet == null )
						return "No type with that name was found.";
				}
				catch
				{
					return "No type with that name was found.";
				}
			}
			else if ( IsParsable( type ) )
			{
				try
				{
					toSet = Parse( obj, type, value );
				}
				catch
				{
					return "That is not properly formatted.";
				}
			}
			else if ( value == null )
			{
				toSet = null;
			}
			else if ( value.StartsWith( "0x" ) && IsNumeric( type ) )
			{
				try
				{
					toSet = Convert.ChangeType( Convert.ToUInt64( value.Substring( 2 ), 16 ), type );
				}
				catch
				{
					return "That is not properly formatted.";
				}
			}
			else
			{
				try
				{
					toSet = Convert.ChangeType( value, type );
				}
				catch
				{
					return "That is not properly formatted.";
				}
			}

			if ( isSerial ) // mutate back
				toSet = (Serial)((Int32)toSet);

			constructed = toSet;
			return null;
		}

Usage Example

        public PropertyCondition(Mobile from, Type type, PropertyInfo[] props, string prop, string oper, string arg, bool logicalNot)
        {
            m_From       = from;
            m_LogicalNot = logicalNot;

            string failReason = "";

            m_PropertyInfoChain = Properties.GetPropertyInfoChain(from, type, prop, true, ref failReason);

            if (m_PropertyInfoChain == null)
            {
                throw new Exception(failReason);
            }

            /*for ( int i = 0; i < props.Length; ++i )
             * {
             *      PropertyInfo check = props[i];
             *
             *      if ( !Insensitive.Equals( check.Name, prop ) )
             *              continue;
             *
             *      m_Property = check;
             *      break;
             * }
             *
             * if ( m_Property == null )
             *      throw new Exception( String.Format( "No property with the name ({0}) was found on type ({1}).", prop, type.Name ) );
             *
             * CPA attr = Properties.GetCPA( m_Property );
             *
             * if ( attr == null )
             *      throw new Exception( String.Format( "No property with the name ({0}) was found on type ({1}).", prop, type.Name ) );
             *
             * if ( from.AccessLevel < attr.ReadLevel )
             *      throw new Exception( String.Format( "Getting this property ({0}) requires at least {1} access level.", prop, Mobile.GetAccessLevelName( attr.ReadLevel ) ) );*/

            string error = Properties.ConstructFromString(m_PropertyInfoChain[m_PropertyInfoChain.Length - 1].PropertyType, null, arg, ref m_Argument);

            if (error != null)
            {
                throw new Exception(error);
            }

            switch (oper)
            {
            case "=":
            case "==":
            case "is": m_Operator = ConditionOperator.Equality; break;

            case "!=": m_Operator = ConditionOperator.Inequality; break;

            case ">": m_Operator = ConditionOperator.Greater; break;

            case "<": m_Operator = ConditionOperator.Lesser; break;

            case ">=": m_Operator = ConditionOperator.GreaterEqual; break;

            case "<=": m_Operator = ConditionOperator.LesserEqual; break;

            case "==~":
            case "~==":
            case "=~":
            case "~=":
            case "is~":
            case "~is": m_Operator = ConditionOperator.EqualityInsensitive; break;

            case "!=~":
            case "~!=": m_Operator = ConditionOperator.InequalityInsensitive; break;

            case "starts": m_Operator = ConditionOperator.StartsWith; break;

            case "starts~":
            case "~starts": m_Operator = ConditionOperator.StartsWithInsensitive; break;

            case "ends": m_Operator = ConditionOperator.EndsWith; break;

            case "ends~":
            case "~ends": m_Operator = ConditionOperator.EndsWithInsensitive; break;

            case "contains": m_Operator = ConditionOperator.Contains; break;

            case "contains~":
            case "~contains": m_Operator = ConditionOperator.ContainsInsensitive; break;
            }

            if (m_Operator != ConditionOperator.Equality && m_Operator != ConditionOperator.Inequality)
            {
                if (m_Argument != null && !(m_Argument is IComparable))
                {
                    throw new Exception(String.Format("This property ({0}) is not comparable.", prop));
                }
            }
        }