static DynValue()
{
Nil = new DynValue()
{
m_Type = DataType.Nil
}.AsReadOnly();
Void = new DynValue()
{
m_Type = DataType.Void
}.AsReadOnly();
True = DynValue.NewBoolean(true).AsReadOnly();
False = DynValue.NewBoolean(false).AsReadOnly();
}
/// <summary>
/// Checks the type of this value corresponds to the desired type. A propert ScriptRuntimeException is thrown
/// if the value is not of the specified type or - considering the TypeValidationFlags - is not convertible
/// to the specified type.
/// </summary>
/// <param name="funcName">Name of the function requesting the value, for error message purposes.</param>
/// <param name="desiredType">The desired data type.</param>
/// <param name="argNum">The argument number, for error message purposes.</param>
/// <param name="flags">The TypeValidationFlags.</param>
/// <returns></returns>
/// <exception cref="ScriptRuntimeException">Thrown
/// if the value is not of the specified type or - considering the TypeValidationFlags - is not convertible
/// to the specified type.</exception>
public DynValue CheckType(string funcName, DataType desiredType, int argNum = -1, TypeValidationFlags flags = TypeValidationFlags.Default)
{
if (this.Type == desiredType)
{
return(this);
}
bool allowNil = ((int)(flags & TypeValidationFlags.AllowNil) != 0);
if (allowNil && this.IsNil())
{
return(this);
}
bool autoConvert = ((int)(flags & TypeValidationFlags.AutoConvert) != 0);
if (autoConvert)
{
if (desiredType == DataType.Boolean)
{
return(DynValue.NewBoolean(this.CastToBool()));
}
if (desiredType == DataType.Number)
{
double?v = this.CastToNumber();
if (v.HasValue)
{
return(DynValue.NewNumber(v.Value));
}
}
if (desiredType == DataType.String)
{
string v = this.CastToString();
if (v != null)
{
return(DynValue.NewString(v));
}
}
}
if (this.IsVoid())
{
throw ScriptRuntimeException.BadArgumentNoValue(argNum, funcName, desiredType);
}
throw ScriptRuntimeException.BadArgument(argNum, funcName, desiredType, this.Type, allowNil);
}
