/// <summary>
/// Creates an XML grammar which uses the base XML file passed in, and adds a rule for the list indicated.
/// </summary>
/// <param name="baseXmlFilePath">Absolute file path to the XML file tat we should use as the base.</param>
/// <param name="ruleName">The name of the rule we are creating from the list.</param>
/// <param name="list">List of values that the new rule may be. This list may be empty.</param>
/// <returns>XmlGrammar instance which can be used to describe a grammar with the given base and the list of values in a rule.</returns>
public static XmlGrammar CreateGrammarFromList(String baseXmlFilePath, String ruleName, List <String> list)
{
List <XmlElement> remoteElements = new List <XmlElement>();
if (!list.Any())
{
// If the list is empty, the grammar file becomes invalid.
// Therefore, I will add a nonsensical string that will never be detect
// to prevent the grammar from erroring.
// A better solution should be found for this, but it's not too important
// right now.
list.Add("XYZ123");
}
XmlDocument mainDoc = new XmlDocument();
mainDoc.Load(baseXmlFilePath);
XmlElement oneof = GrammarUtility.CreateListOfPossibleStrings(mainDoc, list);
XmlElement rule = GrammarUtility.CreateElement(mainDoc, "rule", new Dictionary <string, string>
{
{ "id", ruleName },
{ "scope", "public" },
});
rule.AppendChild(oneof);
mainDoc.LastChild.AppendChild(rule);
return(new XmlGrammar(mainDoc));
}
