private bool MatchLexerRules(char character, IReadOnlyList <ILexerRule> lexerRules, List <ILexeme> lexemes)
{
var anyMatches = false;
for (var i = 0; i < lexerRules.Count; i++)
{
var lexerRule = lexerRules[i];
if (!lexerRule.CanApply(character))
{
continue;
}
var factory = _lexemeFactoryRegistry.Get(lexerRule.LexerRuleType);
var lexeme = factory.Create(lexerRule, Position);
if (!lexeme.Scan(character))
{
FreeLexeme(lexeme);
continue;
}
if (!anyMatches)
{
anyMatches = true;
lexemes.Clear();
}
lexemes.Add(lexeme);
}
return(anyMatches);
}
private bool MatchesNewLexemes(char character)
{
var newLexerRules = ParseEngine.GetExpectedLexerRules();
var anyMatchingLexeme = false;
for (var i = 0; i < newLexerRules.Count; i++)
{
var lexerRule = newLexerRules[i];
var factory = _lexemeFactoryRegistry.Get(lexerRule.LexerRuleType);
var lexeme = factory.Create(lexerRule, Position);
if (!lexeme.Scan(character))
{
factory.Free(lexeme);
continue;
}
anyMatchingLexeme = true;
_existingLexemes.Add(lexeme);
}
SharedPools.Default <List <ILexerRule> >().ClearAndFree(newLexerRules);
return(anyMatchingLexeme);
}