public bool ISIllegal(string Expression, bool ismess)
{
if (Expression.ToCharArray().Length >= 400)
{
MessageBox.Show("表达式太长");
return(false);
}
string ExpressionTemp = Expression + "#";
WordAnalyse MyWords = new WordAnalyse(ExpressionTemp);
MyWords.GetResult();
SyntaxAnalyse MySyntax = new SyntaxAnalyse();
if (!MySyntax.Analyse(MyWords) && ismess)
{
MessageBox.Show("语法错误");
return(false);
}
return(true);
}
public bool Analyse(WordAnalyse pWords)
{
if (pWords.GetResult() == false)
{
return(false);
}
E(pWords);
if (WordIndex < pWords.GetWordNum() - 1)
{
if (pWords.GetWord(WordIndex).CompareTo(')') == 0)
{
MessageBox.Show("第" + (RoundBracketsL + 1) + "个右括号缺少左括号", "缺少左括号");
}
bResult = true;
WordIndex = 0;
return(false);
}
bool tem = bResult;
bResult = true;
WordIndex = 0;
return(tem);
}