public void Visit(UnaryOperator @operator)
{
var nodeVisitor = new DoubleVisitor();
@operator.DependentNode.Accept(nodeVisitor);
Result = nodeVisitor.Result * -1;
}
private static int Main(string[] args)
{
var inputProcessor = new InputProcessor(Console.In);
var treeBuilder = new TreeBuilder();
var tree = new Tree(null);
Commands command;
while ((command = inputProcessor.GetAllSubExpressions()) != Commands.End)
{
switch (command)
{
case Commands.EmptyLine:
break;
case Commands.Error:
ErrorHandler.PrintError(Errors.Format);
break;
case Commands.Expression:
tree.Clear();
treeBuilder.Clear();
var processingFailed = false;
for (var index = inputProcessor.GetSubExpressionCount(); index > 0; index--)
{
var subExpression = inputProcessor.GetSubExpression(index);
if (treeBuilder.Process(subExpression))
{
continue;
}
processingFailed = true;
break;
}
var root = treeBuilder.GetRoot();
if (root == null || processingFailed)
{
ErrorHandler.PrintError(Errors.Format);
break;
}
tree = new Tree(root);
break;
case Commands.Integer:
if (tree.Root == null)
{
Program.Writer.WriteLine("Expression Missing");
break;
}
var intVisitor = new IntegerVisitor();
tree.Root.Accept(intVisitor);
if (intVisitor.Result == null)
{
break;
}
Program.Writer.WriteLine(intVisitor.Result);
break;
case Commands.Double:
if (tree.Root == null)
{
Program.Writer.WriteLine("Expression Missing");
break;
}
var doubleVisitor = new DoubleVisitor();
tree.Root.Accept(doubleVisitor);
Program.Writer.WriteLine(doubleVisitor.Result.ToString("f05"));
break;
case Commands.FullParentheses:
if (tree.Root == null)
{
Program.Writer.WriteLine("Expression Missing");
break;
}
var fullParenthesesVisitor = new FullParenthesesVisitor();
tree.Root.Accept(fullParenthesesVisitor);
Program.Writer.WriteLine(fullParenthesesVisitor.ParenthesizedExpression.ToString());
break;
case Commands.MinParentheses:
if (tree.Root == null)
{
Program.Writer.WriteLine("Expression Missing");
break;
}
var minParenthesesVisitor = new MinParenthesesVisitor();
tree.Root.Accept(minParenthesesVisitor);
Program.Writer.WriteLine(minParenthesesVisitor.ParenthesizedExpression.ToString());
break;
}
}
return(0);
}