/* public void clearData()
* {
*
* }*/
public static MyHashTable GetInstance()
{
if (instance == null)
{
instance = new MyHashTable();
}
return(instance);
}
public static double Evaluate(string expression, ref MyHashTable myTable)
{
var lexer = new CalculatorGrammarLexer(new AntlrInputStream(expression));
lexer.RemoveErrorListeners();
lexer.AddErrorListener(new ThrowExceptionErrorListener());
var tokens = new CommonTokenStream(lexer);
var parser = new CalculatorGrammarParser(tokens);
var tree = parser.compileUnit();
var visitor = new CalculatorVisitor(ref myTable);
return(visitor.Visit(tree));
}
public CalculatorVisitor(ref MyHashTable myTable)
{
this.myTable = myTable;
}
public Form1()
{
InitializeComponent();
InitializeDataGridView(row, colom);
myTable = MyHashTable.GetInstance();
}
