public static BaseGraphCommand Parse(string inputCommand)
{
List <BaseGraphTokenMatch> lineTokens = new List <BaseGraphTokenMatch>();
string startLine = inputCommand;
BaseGraphToken firstToken = BaseGraphToken.Undefined;
bool first = true;
while (!String.IsNullOrEmpty(inputCommand))
{
var match = MatchTokens(inputCommand, firstToken);
if (match == null)
{
throw new InvalidOperationException("Invalid token at line \"" + inputCommand + "\"");
}
inputCommand = match.remainingText;
if (first)
{
firstToken = match.token;
}
lineTokens.Add(match);
first = false;
}
if (lineTokens.Count == 0)
{
throw new InvalidOperationException("Invalid empty command: " + inputCommand);
}
return(BuildCommand(lineTokens, startLine));
}
//returns all possible token matches
static BaseGraphTokenMatch MatchTokens(string line, BaseGraphToken firstToken)
{
foreach (var tokenDef in GetTokenDefinitionsForStartToken(firstToken))
{
BaseGraphTokenMatch ret = tokenDef.Match(line.Trim());
if (ret != null)
{
if (debug)
{
Debug.Log("Token " + ret.token + " maches value: |" + ret.value + "|, remainingText: |" + ret.remainingText + "|");
}
return(ret);
}
}
if (debug)
{
Debug.Log("No token maches found with line: " + line);
}
return(null);
}
public BaseGraphTokenDefinition(BaseGraphToken graphToken, string regexString)
{
this.token = graphToken;
this.regex = new Regex(regexString);
}
static IEnumerable <BaseGraphTokenDefinition> GetTokenDefinitionsForStartToken(BaseGraphToken firstToken)
{
if (firstToken == BaseGraphToken.Undefined)
{
foreach (var tokenDef in tokenDefinitions)
{
yield return(tokenDef);
}
yield break;
}
var seq = BaseGraphValidCommandTokenSequence.validSequences.FirstOrDefault(s => s.requiredTokens.First() == firstToken);
List <BaseGraphToken> tokens = new List <BaseGraphToken>();
foreach (var token in seq.requiredTokens)
{
tokens.Add(token);
}
if (seq.options != null)
{
foreach (var token in seq.options)
{
tokens.Add(token);
}
}
foreach (var tokenDef in tokenDefinitions)
{
if (tokens.Contains(tokenDef.token))
{
yield return(tokenDef);
}
}
}
