public override ValueToken Evaluate(RetroBASIC.Interpreter interpreter, ValueToken item1, ValueToken item2)
{
StringValueToken string1Token = item1 as StringValueToken;
StringValueToken string2Token = item2 as StringValueToken;
if (string1Token != null && string2Token != null)
{
var newString = string1Token.Value + string2Token.Value;
if (newString.Length >= 256)
{
throw new Exceptions.StringTooLongException();
}
return(interpreter.TokensProvider.CreateStringValueToken(newString));
}
var number1Token = item1 as NumericValueToken;
var number2Token = item2 as NumericValueToken;
if (number1Token == null || number2Token == null)
{
throw new Exceptions.TypeMismatchException();
}
var newNumber = number1Token.RealValue + number2Token.RealValue;
return(interpreter.TokensProvider.CreateRealValueToken(newNumber));
}
public StringLiteralExpression(StringValueToken stringValueToken)
{
this.stringValueToken = stringValueToken;
}
void SetStringArrayVariableValue(VariableNameToken variableNameToken, ValueTokenArray indicies, StringValueToken value)
{
if (stringVariableArray.TryGetValue(variableNameToken.Name, out var stringArray) == false)
{
stringArray = CreateStringArrayVariable(variableNameToken,
ConvertTokensArrayToIntArray(indicies, AdjustDimensionForUndimensionedCreate));
}
stringArray.SetValue(ConvertTokensArrayToIntArray(indicies), value);
}
