BracketExp parseBracket()
{
BracketExp bracket = new BracketExp();
bracket.LeftBracketToken = CurrentToken; MoveNext();
if (!isBracketEnd(CurrentKind))
{
while (true)
{
Exp expr = parseExp();
if (expr != null)
{
bracket.InneExps.Add(expr);
}
if (isBracketEnd(CurrentKind))
{
break;
}
if (CurrentKind != TokenKind.Comma)
{
error("多余的表达式元素");
MoveNext();
while (!(isBracketEnd(CurrentKind)) && CurrentKind != TokenKind.Comma)
{
MoveNext();
}
}
if (CurrentKind == TokenKind.Comma)
{
MoveNext();
}
}
}
if (CurrentKind == TokenKind.RBS)
{
bracket.RightBracketToken = CurrentToken;
MoveNext();
}
else
{
error("括号不匹配");
}
return(bracket);
}
void Test(string str, bool result)
{
Assert.AreEqual(result, BracketExp.Check(str));
}
