// ************************* //
private Token match(Token.TokenType expectedTokenType)
{
Token matchedToken = lookAhead(1);
if(lookAheadType(1) == expectedTokenType) {
ConsumeCurrentToken();
}
else {
throw new GrimmException(
"The code word \"" + lookAhead(1).getTokenString() + "\"" +
" doesn't match the expected (" + expectedTokenType + ")." +
" at line " +
lookAhead(1).LineNr +
" and position " +
lookAhead(1).LinePosition +
" in conversation '" +
_conversationName + "'"
);
}
return matchedToken;
}
private WaitDialogueNode VisitWaitDialogueNode(DialogueNode pPrevious)
{
#if DEBUG_WRITE
Console.WriteLine("WaitDialogueNode()");
#endif
match(Token.TokenType.WAIT);
WaitDialogueNode n = _dialogueRunner.Create <WaitDialogueNode>(_conversationName, _language, (_nodeCounter++) + " (start commando)");
List <ExpressionDialogueNode> expressionNodes = new List <ExpressionDialogueNode>();
bool hasEventListener = false;
while (true)
{
if (lookAheadType(1) == Token.TokenType.NAME)
{
string expressionName = "";
string[] args = VisitFunctionCall(out expressionName);
ExpressionDialogueNode expressionNode = _dialogueRunner.Create <ExpressionDialogueNode>(_conversationName, _language, (_nodeCounter++) + " (expression)");
expressionNode.expression = expressionName;
expressionNode.args = args;
expressionNodes.Add(expressionNode);
}
else if (lookAheadType(1) == Token.TokenType.AND)
{
ConsumeCurrentToken();
}
else if (lookAheadType(1) == Token.TokenType.LISTEN)
{
if (hasEventListener)
{
throw new GrimmException(_conversationName + " already has a event listener attached to the wait statement on line " + lookAhead(1).LineNr);
}
ConsumeCurrentToken();
n.eventName = match(Token.TokenType.NAME).getTokenString();
hasEventListener = true;
#if DEBUG_WRITE
Console.WriteLine("This WaitDialogueNode has an event called " + n.eventName);
#endif
}
else
{
break;
}
}
n.expressions = expressionNodes.ToArray();
string handleName = "";
if (lookAheadType(1) == Token.TokenType.BRACKET_LEFT)
{
match(Token.TokenType.BRACKET_LEFT);
Token handleToken = match(Token.TokenType.NAME);
handleName = handleToken.getTokenString();
match(Token.TokenType.BRACKET_RIGHT);
}
n.handle = handleName;
if (_loopStack.Count > 0)
{
// Add this listening dialogue node to the scope of the loop so that it is automatically removed when the loop ends
n.scopeNode = _loopStack.Peek().name;
}
#if DEBUG_WRITE
Console.WriteLine("Added WaitDialogueNode() with name '" + n.name + "'");
#endif
//if(!_dialogueRunner.HasExpression(expressionName)) {
//throw new GrimmException("There is no '" + expressionName + "' expression registered in the dialogue runner");
//}
SilentDialogueNode silentEndNode = _dialogueRunner.Create <SilentDialogueNode>(_conversationName, _language, (_nodeCounter++).ToString() + "(silent stop node)");
AllowLineBreak();
if (lookAheadType(1) == Token.TokenType.BLOCK_BEGIN)
{
_loopStack.Push(n);
ImmediateNode eventBranchStartNode = _dialogueRunner.Create <ImmediateNode>(_conversationName, _language, (_nodeCounter++).ToString() + "(waitBranchStartNode)");
n.branchNode = eventBranchStartNode.name;
n.hasBranch = true;
match(Token.TokenType.BLOCK_BEGIN);
Nodes(eventBranchStartNode, silentEndNode);
match(Token.TokenType.BLOCK_END);
_loopStack.Pop();
}
else
{
#if DEBUG_WRITE
Console.WriteLine("this wait dialogue node had no body");
#endif
}
AddLinkFromPreviousNode(pPrevious, n);
return(n);
}
private void ConsumeCurrentToken()
{
Token nextToken;
if (_nextTokenIndex < _tokens.Count) {
nextToken = _tokens[_nextTokenIndex];
_nextTokenIndex++;
}
else {
nextToken = new Token(Token.TokenType.EOF, "<EOF>");
}
_lookahead[_lookaheadIndex] = nextToken;
_lookaheadIndex = (_lookaheadIndex + 1) % k;
}
DialogueNode VisitListeningDialogueNode(DialogueNode pPrevious)
{
#if DEBUG_WRITE
Console.WriteLine("VisitListeningDialogueNode()");
#endif
match(Token.TokenType.LISTEN);
string eventName = GetAStringFromNextToken(false, false);
string handleName = "";
if (lookAheadType(1) == Token.TokenType.BRACKET_LEFT)
{
match(Token.TokenType.BRACKET_LEFT);
Token handleToken = match(Token.TokenType.NAME);
handleName = handleToken.getTokenString();
match(Token.TokenType.BRACKET_RIGHT);
}
else if (
(lookAheadType(1) != Token.TokenType.EOF) &&
(lookAheadType(1) != Token.TokenType.NEW_LINE) &&
(lookAheadType(1) != Token.TokenType.BLOCK_BEGIN))
{
throw new GrimmException("Can't follow LISTEN statement with token of type " + lookAheadType(1) + " at line " + lookAhead(1).LineNr + " and position " + lookAhead(1).LinePosition + " in " + _conversationName);
}
ListeningDialogueNode n = _dialogueRunner.Create <ListeningDialogueNode>(_conversationName, _language, (_nodeCounter++).ToString() + "(event listener)");
n.eventName = eventName;
n.handle = handleName;
if (_loopStack.Count > 0)
{
// Add this listening dialogue node to the scope of the loop so that it is automatically removed as a listener when the loop ends
n.scopeNode = _loopStack.Peek().name;
}
SilentDialogueNode silentNode = _dialogueRunner.Create <SilentDialogueNode>(_conversationName, _language, (_nodeCounter++).ToString() + "(silent stop node)");
AllowLineBreak();
if (lookAheadType(1) == Token.TokenType.BLOCK_BEGIN)
{
_loopStack.Push(n);
ImmediateNode eventBranchStartNode = _dialogueRunner.Create <ImmediateNode>(_conversationName, _language, (_nodeCounter++).ToString() + "(eventBranchStartNode)");
n.branchNode = eventBranchStartNode.name;
n.hasBranch = true;
match(Token.TokenType.BLOCK_BEGIN);
Nodes(eventBranchStartNode, silentNode);
match(Token.TokenType.BLOCK_END);
_loopStack.Pop();
}
else
{
#if DEBUG_WRITE
Console.WriteLine("this listening dialogue node had no body");
#endif
}
AddLinkFromPreviousNode(pPrevious, n);
return(n);
}