public LL1AnalysisForm()
{
InitializeComponent();
lblHint.ForeColor = Color.Red;
lblHint1.ForeColor = Color.Red;
LL1Helper.Reset();
}
private void tsbtnLL1Parsing_Click(object sender, EventArgs e)
{
if (!LL1Helper.isChecked)
{
MessageBox.Show("请先执行文法的预处理和检查操作！", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
return;
}
if (LL1Helper.existedLeftRecursion && LL1Helper.existedLeftFactor)
{
MessageBox.Show("当前文法规则存在左递归和左公共因子，需要先消除！", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
return;
}
else if (LL1Helper.existedLeftRecursion)
{
MessageBox.Show("当前文法规则存在左递归，需要先消除！", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
return;
}
else if (LL1Helper.existedLeftFactor)
{
MessageBox.Show("当前文法规则存在左公共因子，需要先消除！", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
return;
}
if (!LL1Helper.isTableGenerated)
{
MessageBox.Show("当前文法规则的LL(1)分析表还未生成，需要先生成该表！", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
return;
}
String sentence = txtSentence.Text;
if (sentence.Equals(""))
{
MessageBox.Show("输入语句不能为空！", "错误", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
}
else
{
LL1Helper.DisplayLL1Parsing(sentence, dgvLL1Parsing);
}
}
private void tsbtnGenerateLL1ParsingTable_Click(object sender, EventArgs e)
{
LL1Helper.GenerateLL1ParsingTable(dgvLL1ParsingTable);
}
private void tsbtnLeftFactoring_Click(object sender, EventArgs e)
{
LL1Helper.LeftFactoring(rtxtLeftFactoring);
}
private void tsbtnLeftRecursionRemoval_Click(object sender, EventArgs e)
{
LL1Helper.LeftRecursionRemoval(rtxtLeftRecursionRemoval);
}
private void tsbtnCheckGrammar_Click(object sender, EventArgs e)
{
LL1Helper.CheckGrammar(rtxtGrammar);
}
