public IExpression ParseExpression(IEnumerator <IToken> tokens)
{
var expr = ParseAssignment(tokens.NextNonIgnorable());
if (tokens.Current.Type != TokenType.End)
{
var invalid = ParseInvalid(ErrorCode.InvalidSymbol, tokens);
expr = new BinaryExpression.Multiply(expr, invalid);
}
return(expr);
}
private static void CheckProperStatementEnd(IEnumerator <IToken> tokens, ref IExpression expr)
{
if (tokens.Current.Type == TokenType.SemiColon)
{
tokens.NextNonIgnorable();
}
else if (tokens.Current.Type != TokenType.End)
{
var invalid = ParseInvalid(ErrorCode.InvalidSymbol, tokens);
expr = new BinaryExpression.Multiply(expr, invalid);
}
}
private static void CheckProperlyTerminated(IEnumerator <IToken> tokens, ref IExpression expr)
{
if (tokens.Current.Type == TokenType.SemiColon)
{
tokens.NextNonIgnorable();
}
else
{
var invalid = new InvalidExpression(ErrorCode.TerminatorExpected, tokens.Current);
expr = new BinaryExpression.Multiply(expr, invalid);
}
}
