public void ParseInvalidUnexpectedCharacterString()
{
NonTerminal S, T, F;
LR0 parser = new SLR1(LR0Test.ConstructTestGrammar(out S, out T, out F));
parser.Parse("((x)*t)**");
}
public void ParseInvalidEarlyTerminatingString()
{
NonTerminal S, T, F;
LR0 parser = new SLR1(LR0Test.ConstructTestGrammar(out S, out T, out F));
parser.Parse("((x)*t)*");
}
public void ParseValidString()
{
NonTerminal S, T, F;
LRParserBase parser = new SLR1(LR0Test.ConstructTestGrammar(out S, out T, out F));
ParseTree tree = parser.Parse("((x) * t) * foo");
Assert.IsNotNull(tree);
Assert.IsNotNull(tree.Root);
Assert.AreEqual(3, tree.Root.Children.Count);
Assert.IsNotNull(tree.Root.Children[0].NonTerminal);
Assert.AreEqual("*", tree.Root.Children[1].Token.Value);
Assert.IsNotNull(tree.Root.Children[2].NonTerminal);
Assert.AreEqual("foo", tree.Root.Children[2].Children[0].Token.Value);
}
private void OpenFile_Click(object sender, EventArgs e)
{
OpenFileDialog fileName = new OpenFileDialog();
fileName.InitialDirectory = Application.StartupPath;
fileName.Filter = "txt files (*.txt)|*.txt";
fileName.FilterIndex = 1;
fileName.RestoreDirectory = true;
if (fileName.ShowDialog() == DialogResult.OK)
{
//MessageBox.Show("OK");
string path = fileName.FileName.ToString();
backEnd = new SLR1(path);
Dictionary <string, List <string> > rule = backEnd.GetRuleSet();
RuleDisplay.Clear();
if (rule == null)
{
MessageBox.Show("SLR1运行失败，输入的规则式有问题");
}
else
{
foreach (string key in rule.Keys)
{
foreach (string showRule in rule[key])
{
RuleDisplay.AppendText(key + "->" + showRule + "\r\n");
}
}
backEnd.SolveFirstSet();
backEnd.SolveFollowSet();
backEnd.BuildLR0ForView();
isSyntaxValid = backEnd.BuildTable();
MessageBox.Show("输入的规则式合法");
GetLR0.Enabled = true;
}
}
}
public void SLR1InvalidGrammar()
{
LRParserBase parser = new SLR1(new CPointerHandling());
parser.Parse("x = y");
}
public void InputAlorithm(SLR1 al)
{
alogrithm = al;
}
