private void AddSymbolsToProduction(Production prod, List <string> list)
{
// Version 1.3.1 sends even empty lists to this method.
// Furthermore, version 1.3.1 no longer explicitly calls
// FixInternalReduction(). It is easier to adopt a consistent
// approach and let AddXxxToProd check for a trailing action
// prior to adding symbols or a new action.
//
if (list != null)
{
if (prod.semanticAction != null || prod.precSpan != null)
{
FixInternalReduction(prod);
}
foreach (string str in list)
{
Symbol symbol = null;
switch (TokenOf(str))
{
case Token.litchar: // This is a character literal symbol
if (GPCG.ImportedTokens && Terminal.BumpsMax(str))
{
handler.ListError(this.CurrentLocationSpan, 82, str, '\0');
}
symbol = grammar.LookupTerminal(Token.litchar, str);
break;
case Token.litstring: // This is a uned occurrence of a terminal alias.
String s = CharacterUtilities.CanonicalizeAlias(str);
if (!grammar.aliasTerms.ContainsKey(s))
{
handler.ListError(this.CurrentLocationSpan, 83, str, '\0');
}
else
{
symbol = grammar.aliasTerms[s];
if (symbol == Terminal.Ambiguous) // Use of an ambiguous alias.
{
handler.ListError(this.CurrentLocationSpan, 84, str, '\0');
}
}
break;
case Token.ident: // This is a used occurrence of a terminal name.
if (grammar.terminals.ContainsKey(str))
{
symbol = grammar.terminals[str];
}
else
{
symbol = grammar.LookupNonTerminal(str);
}
break;
}
prod.rhs.Add(symbol);
}
}
}