public void Visit(Statement s)
{
string statementtypename = s.GetType().Name;
string funcname = "Visit" + statementtypename;
MethodInfo mi = this.GetType().GetMethod(funcname, new [] { s.GetType() });
if (mi != null)
{
try
{
mi.Invoke(this, new[] { s });
}
catch (TargetInvocationException e)
{
throw e.InnerException;
}
}
}
public FSM(FSMFile _file)
{
file = _file;
InitTokensDictionary( _file.config );
StreamReader stream = new StreamReader(file.SourceFile);
try
{
while (!stream.EndOfStream)
{
currentLine++;
rawtokens = new Queue<string>(stream.ReadLine().Split(null));
if (IsComment(rawtokens.Peek()))
continue;
while (rawtokens.Count > 0)
{
string token = rawtokens.Dequeue();
if (token == "")
continue;
if (!IsToken(token))
throw new MalformedFSMException("Unexpected identifier " + token + ", expected keyword.", currentLine);
Type statementtype = Tokens[token];
Statement statement = (Statement)Activator.CreateInstance(statementtype);
statement.owner = this;
statement.line = currentLine;
System.Diagnostics.Debug.Assert(statement != null);
statement.Consume(rawtokens);
if (statement.ShouldPush())
{
//we need to add it to the current state, if it exists.
//it may not exist if this is the first statement (Global)
if (statements.Count > 0)
statements.Peek().Statements().Add(statement);
statements.Push(statement);
}
else if (statement.ShouldPop())
{
lastpopped = statements.Pop();
if (statements.Count > 0)
statements.Peek().Statements().Add(statement);
}
else //add to current statement
{
statements.Peek().Statements().Add(statement);
}
}
}
}
catch (Exception)
{
throw;
}
finally
{
stream.Close();
}
if (statements.Count > 0) //we have terminated without closing the FSM.
{
throw new MalformedFSMException("Unexpected EOF: Did you forget an endstate/endfsm?", currentLine);
}
}