final int parameterCount = parameters.getParameterCount();
if (parameterCount < 2 || parameterCount > 3)
{
throw EvaluationException.getInstance(LibFormulaErrorValue.ERROR_ARGUMENTS_VALUE);
}
final TypeRegistry typeRegistry = context.getTypeRegistry();
final Type searchType = parameters.getType(0);
final Object searchValue = parameters.getValue(0);
final Type textType = parameters.getType(1);
final Object textValue = parameters.getValue(1);
Type indexType = null;
Object indexValue = null;
if (parameterCount == 3)
{
indexType = parameters.getType(2);
indexValue = parameters.getValue(2);
if (indexType == null || indexValue == null)
{
throw EvaluationException.getInstance(LibFormulaErrorValue.ERROR_MISSING_ARGUMENT_VALUE);
}
}
final String search = typeRegistry.convertToText(searchType, searchValue);
final String text = typeRegistry.convertToText(textType, textValue);
if (search == null || text == null)
{
throw EvaluationException.getInstance(LibFormulaErrorValue.ERROR_INVALID_ARGUMENT_VALUE);
}
int indexFrom = 0;
if (indexType != null)
{
final Number n = typeRegistry.convertToNumber(indexType, indexValue);
if (n.intValue() >= 1)
{
indexFrom = n.intValue() - 1;
}
else