public void visit(TerminalD terminalD)
{
if (symbolType == SymbolType.Terminal)
{
if (terminalD.Name.Equals(name))
found = true;
}
}
public void visit(TerminalD terminalD)
{
// set current, ready for parent
TerminalV terminalV = new TerminalV(terminalD, level + 1);
terminalD.References.Add(terminalV);
current = terminalV;
}
public void visit(TerminalD terminalD)
{
String value = terminalD.Name;
Run run = new Run();
if (terminalD.IsSelected)
run.FontWeight = FontWeights.Bold;
run.Text = terminalEncapsulation + value + terminalEncapsulation;
representation.Inlines.Add(run);
}
private static Lexeme Reverse(TerminalD terminal)
{
return new Lexeme(LexemeType.Terminal, terminal.Name, -1);
}
/// <summary>
/// Returns the rule structure, without the ChoiceLineD
/// </summary>
/// <param name="productionRuleLexemes"></param>
/// <returns></returns>
private void CreateRuleDataStructure(List<Lexeme> productionRuleLexemes, ChoiceLineD choiceLineD)
{
//GrammarNodeD returnVal;
OperationD current = choiceLineD; // points to which level we are at
//returnVal = current;
// Split by Choice as this has the highest precedence
List<Lexeme> choiceLexemes = new List<Lexeme>();
ArrayList choices = new ArrayList();
foreach (Lexeme lexeme in productionRuleLexemes)
{
if (lexeme.Type == LexemeType.Choice)
{
choices.Add(choiceLexemes);
choiceLexemes = new List<Lexeme>();
}
else
{
choiceLexemes.Add(lexeme);
}
}
// add last choice list
choices.Add(choiceLexemes);
// put in a choiceD
ChoiceD choiceD = new ChoiceD(current);
current.appendChild(choiceD);
current = choiceD; // move down a level
// add the concatenated items for each Choice
foreach (List<Lexeme> concatLexemes in choices)
{
ConcatenationD concatenation = new ConcatenationD(current);
foreach (Lexeme lexeme in concatLexemes)
{
if (lexeme.Type == LexemeType.Nonterminal)
{
// create nonterminal tail from the nonterminalhead
NonterminalHeadD nontHead = getNonterminalHead(lexeme.Value);
if (nontHead == null)
throw new Exception("Could not find a defined rule for the Nonterminal: " + lexeme.Value);
NonterminalTailD nontTail = new NonterminalTailD(nontHead, concatenation);
// add the tail to current children
concatenation.appendChild(nontTail);
}
else if (lexeme.Type == LexemeType.Terminal)
{
TerminalD terminalD = new TerminalD(lexeme.Value, concatenation);
concatenation.appendChild(terminalD);
}
else if (lexeme.Type == LexemeType.Undefined)
{
UndefinedD undefinedD = new UndefinedD(concatenation);
concatenation.appendChild(undefinedD);
}
else if (lexeme.Type != LexemeType.Concatenation)
{
// Lexes should only be of type Nont, T and Concat. Error
throw new Exception("Lexeme was not of type Nonterminal, Terminal or Concatenation");
}
}
current.appendChild(concatenation);
}
}
public void visit(TerminalD terminalD)
{
}
public GrammarNodeD Replace(GrammarNodeD itemToReplace, VADG.Global.SymbolType symbolType, string name)
{
OperationD parent = itemToReplace.Parent as OperationD;
if (parent == null)
throw new Exception("The item to replace does not have an operation D as a parent, fail.");
// the rule we are editing
NonterminalHeadD rule = itemToReplace.getMyRule();
if (rule == null)
throw new Exception("The item to replace could not find a nonterminalhead D associated with it.");
// remove old item
int index = parent.Children.IndexOf(itemToReplace);
parent.Children.Remove(itemToReplace);
itemToReplace.Dispose();
// create new item to add
GrammarNodeD newItem;
if (symbolType == VADG.Global.SymbolType.Terminal)
{
// create new Terminal
newItem = new TerminalD(name, parent);
}
else
{
// If the nont head doesn't exist, create and add to grammar
NonterminalHeadD nontHead = model.DefinitiveGrammar.getNonterminal(name);
if (nontHead == null)
nontHead = CreateNewNonterminal(name);
newItem = nontHead.CreateNonterminalTailD(parent);
}
// insert new item into parent
parent.insertChild(index, newItem);
return newItem;
}
private void Init(TerminalD refIn, int levelIn)
{
reference = refIn;
level = levelIn;
}
public TerminalV(TerminalD refIn, int levelIn)
{
Init(refIn, levelIn);
}
public void visit(TerminalD terminalD)
{
String value = terminalD.Name;
representation += terminalEncapsulation + value + terminalEncapsulation;
}
public void visit(TerminalD terminalD)
{
terminalD.IsSelected = false;
}
