public static ExpressionValue GetValueFromText(IList <Char> chars)
{
if (chars == null)
{
return(null);
}
if (StringHelper.IsString(chars, '\''))
{
var name = StringHelper.ToString2(chars);
return(new ExpressionValue(
name.Substring(1, name.Length - 2).Replace("\\'", "'")));
}
else if (StringHelper.IsInteger(chars))
{
return(new ExpressionValue(
UniConvert.ParseUniInt64(StringHelper.ToString2(StringHelper.Replace2(chars, ',', '.')))));
}
else if (StringHelper.IsNumber(chars))
{
return(new ExpressionValue(
UniConvert.ParseUniDecimal(StringHelper.ToString2(StringHelper.Replace2(chars, ',', '.')))));
}
else if (StringHelper.SequenceEqualInsensitive(chars, OperatorTypeHelper.symbol_null))
{
return(new ExpressionValue(null));
}
else if (StringHelper.SequenceEqualInsensitive(chars, OperatorTypeHelper.symbol_false))
{
return(new ExpressionValue(false));
}
else if (StringHelper.SequenceEqualInsensitive(chars, OperatorTypeHelper.symbol_true))
{
return(new ExpressionValue(true));
}
else if (StringHelper.SequenceEqual(chars, OperatorTypeHelper.symbol_new_line))
{
return(new ExpressionValue("\r\n"));
}
else if (StringHelper.SequenceEqualInsensitive(chars, OperatorTypeHelper.symbol_undefined))
{
return(new ExpressionValue(new Undefined()));
}
return(null);
}