/// <summary>
/// Receive LexerResult and Parse asynchronously, order of Index will be checked.
/// </summary>
/// <param name="lexerResult">The Result of Lexer</param>
public async Task ParseLexUnitAsync(LexerResult lexerResult)
{
//check the order
if (lexerResult.Index != index)
{
throw new ParseIndexException(index, lexerResult.Index,
"Index Error: Index should be " + index + " instead of " + lexerResult.Index);
}
//transfer to parse unit
ParseUnit parseUnit = new ParseUnit(lexerResult.Name, null, lexerResult.Position, lexerResult.Value, null);
//to parse it
index++;// move to next for sync
await JoinParse(parseUnit, lexerResult.Index);
}
/// <summary>
/// Receive LexerResult and Parse synchronously, order of Index will be check.
/// </summary>
/// <param name="lexerResult">The Result of Lexer</param>
public void ParseLexUnit(LexerResult lexerResult)
{
//check the order
if (lexerResult.Index != index)
{
throw new ParseIndexException(index, lexerResult.Index,
"Index Error: Index should be " + index + " instead of " + lexerResult.Index);
}
//transfer to parse unit
ParseUnit parseUnit = new ParseUnit(lexerResult.Name, null, lexerResult.Position, lexerResult.Value, null);
//to parse it
index++; // move to next for sync
door.GetIn(); // move to next for async, but no use in here.
Parse(parseUnit);
}
protected Task JoinParse(ParseUnit parseUnit, long index)
{
Task task = new Task(new Action <object>(x => Parse((ParseUnit)x)), parseUnit);
while (door.Index < index)
{
}
if (door.Index == index)
{
lock (door)
{
door.GetIn(); // move to next for async
task.RunSynchronously(); // run it exclusively
}
}
else
{
throw new AsyncIndexException(index, door.Index,
"Async Index Error: Async Index should be " + index + " instead of " + door.Index + ". Check your code please.");
}
return(task);
}
/// <summary>
/// parsing entrance methods
/// </summary>
/// <param name="parseUnit">parse unit</param>
protected virtual void Parse(ParseUnit parseUnit)
{
}
protected override void Parse(ParseUnit parseUnit)
{
}