private Token PeekToken2() {
if (_lookahead2.Token == null) {
_lookahead2 = new TokenWithSpan(_tokenizer.GetNextToken(), _tokenizer.TokenSpan);
_lookahead2WhiteSpace = _tokenizer.PreceedingWhiteSpace;
}
return _lookahead2.Token;
}
private void FetchLookahead() {
if (_lookahead2.Token != null) {
_lookahead = _lookahead2;
_lookaheadWhiteSpace = _lookahead2WhiteSpace;
_lookahead2 = TokenWithSpan.Empty;
_lookahead2WhiteSpace = null;
} else {
_lookahead = new TokenWithSpan(_tokenizer.GetNextToken(), _tokenizer.TokenSpan);
_lookaheadWhiteSpace = _tokenizer.PreceedingWhiteSpace;
}
}
private Token NextToken() {
_token = _lookahead;
_tokenWhiteSpace = _lookaheadWhiteSpace;
FetchLookahead();
return _token.Token;
}
private void ReportSyntaxError(TokenWithSpan t, int errorCode) {
ReportSyntaxError(t.Token, t.Span, errorCode, true);
}
private void CheckSuiteEofError(TokenWithSpan cur) {
if (MaybeEatEof()) {
// for interactive parsing we allow the user to continue in this case
ReportSyntaxError(_lookahead.Token, cur.Span, ErrorCodes.SyntaxError, true);
}
}
private void ReportSyntaxError(TokenWithSpan t) {
ReportSyntaxError(t, ErrorCodes.SyntaxError);
}
public void Reset(FutureOptions languageFeatures) {
_languageFeatures = languageFeatures;
_token = new TokenWithSpan();
_lookahead = new TokenWithSpan();
_fromFutureAllowed = true;
_classDepth = 0;
_functions = null;
_privatePrefix = null;
_parsingStarted = false;
_errorCode = 0;
}