private void AddTerminalToLookupByFirstChar(TerminalLookupTable _lookup, Terminal term, char firstChar)
{
TerminalList currentList;
if (!_lookup.TryGetValue(firstChar, out currentList)) {
//if list does not exist yet, create it
currentList = new TerminalList();
_lookup[firstChar] = currentList;
}
//add terminal to the list
if (!currentList.Contains(term))
currentList.Add(term);
}
private void AddTerminalToLookupByFirstChar(TerminalLookupTable lookup, Terminal term, char firstChar)
{
if (!lookup.TryGetValue(firstChar, out TerminalList currentList))
{
//if list does not exist yet, create it
currentList = new TerminalList();
lookup[firstChar] = currentList;
}
//add terminal to the list
if (!currentList.Contains(term))
{
currentList.Add(term);
}
}
private void AddTerminalToLookup(TerminalLookupTable _lookup, Terminal term, IList<string> firsts)
{
foreach (string prefix in firsts) {
if(string.IsNullOrEmpty(prefix)) {
_language.Errors.Add(GrammarErrorLevel.Error, null, Resources.ErrTerminalHasEmptyPrefix, term.Name);
continue;
}
//Calculate hash key for the prefix
char firstChar = prefix[0];
if(_grammar.CaseSensitive)
AddTerminalToLookupByFirstChar(_lookup, term, firstChar);
else {
AddTerminalToLookupByFirstChar(_lookup, term, char.ToLower(firstChar));
AddTerminalToLookupByFirstChar(_lookup, term, char.ToUpper(firstChar));
}//if
}//foreach prefix
}
} //method
private void AddTerminalToLookup(TerminalLookupTable _lookup, Terminal term, IList <string> firsts)
{
foreach (string prefix in firsts)
{
if (string.IsNullOrEmpty(prefix))
{
_language.Errors.Add(GrammarErrorLevel.Error, null, Resources.ErrTerminalHasEmptyPrefix, term.Name);
continue;
}
//Calculate hash key for the prefix
char firstChar = prefix[0];
if (_grammar.CaseSensitive)
{
AddTerminalToLookupByFirstChar(_lookup, term, firstChar);
}
else
{
AddTerminalToLookupByFirstChar(_lookup, term, char.ToLower(firstChar));
AddTerminalToLookupByFirstChar(_lookup, term, char.ToUpper(firstChar));
} //if
} //foreach prefix
}
