public bool TryEvaluate(string exp, out int value)
{
if (m_RPN.Parse(exp))
{
object result = m_RPN.Evaluate();
if (result != null && int.TryParse(result.ToString(), out value))
{
return(true);
}
}
Debug.LogError("解析表达式 " + exp + " 失败");
value = 0;
return(false);
}
static void Main(string[] args)
{
var rootCommand = new RootCommand
{
new Argument <string>("expression", "RPN expression to be evaluated"),
new Option <List <string> >(new string[] { "-p", "--parameters" }, description: "List of parameters (primitive or json)"),
new Option <List <FileInfo> >(new string[] { "-f", "--files" }, description: "Files to be appended to parameters list"),
};
rootCommand.Description = "RPN Evaluator based on RPN.Net";
rootCommand.Handler = CommandHandler.Create <string, List <string>, List <FileInfo> >((expression, parameters, files) =>
{
List <object> parsedParameters = ParseParameters(parameters, files);
try
{
var val = (RPN.Evaluate(new RPNExpression(expression, parsedParameters.ToArray())).ToString());
Console.WriteLine(val);
Environment.Exit(0);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Environment.Exit(1);
}
});
rootCommand.InvokeAsync(args);
}
static bool EvaluateFunction(RPNContext context)
{
if (context.Current.StartsWith("@@"))
{
var blockExpression = context.Blocks[context.Current];
var value = RPN.Evaluate(blockExpression);
context.Stack.Push(value);
return(true);
}
else if (context.Current.StartsWith("@"))
{
var label = context.Current;
var list = new List <string>();
context.MoveNext();
while (context.Current != label)
{
list.Add(context.Current);
context.MoveNext();
}
context.Blocks.Add("@" + label, new RPNExpression(String.Join(" ", list), context.Data.ToArray()));
return(true);
}
return(false);
}
public static void Run()
{
Tokeniser tokeniser = new Tokeniser(Console.ReadLine());
List <Token> tokens = tokeniser.Tokenise().ToList();
TreeNode bin1 = TreeBuilder.BuildAST(tokens); // e.g "5 * 2 + 1" -> "5 2 * 1 +"
// Using TreeNode type, not BinOp (Binary Operator) as we cannot guarantee the root node of the abstract syntax tree will be an operator.
Console.WriteLine("To postfix:");
foreach (TreeNode node in Traversal.postOrder(bin1))
{
Console.Write(node.value + " ");
}
Console.WriteLine("\nTo infix:");
foreach (TreeNode node in Traversal.inOrder(bin1))
{
Console.Write(node.value + " ");
}
Console.WriteLine("\nTo prefix:");
foreach (TreeNode node in Traversal.preOrder(bin1))
{
Console.Write(node.value + " ");
}
Console.WriteLine();
// Now using reverse polish notation, calculate what the result is. This takes in a postfix-ordered list of TreeNodes.
Console.WriteLine("Answer: " + RPN.Evaluate(Traversal.postOrder(bin1)));
}
static void Test(string name, string exp, dynamic expected, params object[] objects)
{
_total++;
string strVal = "";
bool status = false;
try
{
var val = RPN.Evaluate(exp, objects);
strVal = val.ToString();
status = expected == val;
if (status)
{
_success++;
}
Console.WriteLine($"{name} => RPN: {exp} :: Expected: {expected} :: Value: {strVal} :: Test: {(status ? "PASS" : "FAIL")}");
}
catch (Exception e)
{
Console.WriteLine($"{name} => RPN: {exp} :: Expected: {expected} :: Value: EXCEPTION :: Test: FAIL");
Console.WriteLine($" {e.Message}");
}
}
/// <summary>
/// 计算具体的费用
/// </summary>
/// <param name="costFormularKey"></param>
/// <param name="salarySummary"></param>
/// <returns></returns>
private static decimal CalculateCostDetails(Guid costFormularKey, SalarySummaryEntity salarySummary)
{
decimal result = 0M;
CostFormularEntity formularEntity = CostFormularBLL.Instance.Get(costFormularKey);
if (formularEntity == null)
{
return(0M);
}
string formularValue = formularEntity.CostFormularValue;
if (string.IsNullOrWhiteSpace(formularValue) == false)
{
List <string> costElementList = StringHelper.GetPlaceHolderList(formularValue, "{", "}");
foreach (string costElement in costElementList)
{
string placeHolderContent = string.Empty;
switch (costElement)
{
case "NeedPaySalary":
placeHolderContent = salarySummary.SalaryNeedPayBeforeCost.ToString();
break;
case "RealPaySalary":
placeHolderContent = salarySummary.SalaryNeedPayToLabor.ToString();
break;
default:
{
BasicSettingEntity basicSettingEntity = CostList.Find(w => w.SettingKey == costElement);
if (basicSettingEntity != null)
{
placeHolderContent = basicSettingEntity.SettingValue;
}
break;
}
}
string placeHolder = "{" + costElement + "}";
formularValue = formularValue.Replace(placeHolder, placeHolderContent);
}
try
{
RPN rpn = new RPN();
if (rpn.Parse(formularValue))
{
result = Convert.ToDecimal(rpn.Evaluate());
}
}
catch
{
result = 0;
}
}
return(result);
}
static void Summary()
{
var rate = RPN.Evaluate("$0 $1 perc", _total, _success);
var summary = $"Summary: Total: {_total}, Success: {_success}, Failures: {_total - _success}, Success Rate: {rate}%";
Console.WriteLine("".PadLeft(80, '*'));
Console.WriteLine(summary);
}
protected void Button1_Click(object sender, EventArgs e)
{
RPN rpn = new RPN();
string inputData = this.TextBox1.Text;
if (rpn.Parse(inputData) == true)
{
this.Button1.Text = rpn.Evaluate().ToString();
}
}
public override void ActionExcute()
{
String strText = actionCalculateData.strExpression;
bool IsVar = false;
String item = String.Empty;
String tmpExp = String.Empty;
if (actionCalculateData.strExpression == String.Empty)
{
return;
}
foreach (char ch in strText)
{
Regex regex = new Regex(@"[~]{1}");
if (IsVar && regex.IsMatch(item))
{
Regex rg = new Regex(@"^[0-9]*[+,\-,\*,\/,&,|,=,>,<,(,),.,;]*$");
if (rg.IsMatch(ch.ToString()))
{
IsVar = false;
String strValue = GetValue(item);
tmpExp += strValue;
item = String.Empty;
}
}
if (ch != '#' && !IsVar)
{
if (ch != ';')
{
tmpExp += ch.ToString();
}
}
else
{
IsVar = true;
if (ch != '#')
{
item += ch.ToString();
}
}
}
RPN rpn = new RPN();
if (rpn.Parse(tmpExp))
{
doubleValue = (double)rpn.Evaluate();
}
}
public string SolveFormula(string expression)
{
if (expression == "")
{
return("");
}
if (expression.Substring(0, 1) == "'")
{
return(expression.Replace("'", ""));
}
RPN rpn = new RPN();
if (rpn.Parse(expression))
{
Stack <object> operandProcessed = new Stack <object>();
object[] tokens = rpn.Tokens.ToArray();
for (int i = tokens.Length - 1; i >= 0; i--)
{
object item = (object)tokens[i];
if (item is Operator @operator)
{
operandProcessed.Push(@operator);
}
else
{
Operand operand = (Operand)item;
if (operand.Type == OperandType.STRING)
{
object tag = operand.Value;
if (IsSystemVariable((string)tag))
{
tag = CalculateSystemVariable((string)tag);
}
else
{
tag = GetTagsValue((string)tag);
}
operand.Value = tag;
operand.Type = OperandType.NUMBER;
}
operandProcessed.Push((object)operand);
}
}
rpn.Tokens = operandProcessed;
}
return(rpn.Evaluate().ToString());
}
public void Test(string name, string exp, dynamic expected, params object[] objects)
{
string strVal;
bool status;
try
{
var val = RPN.Evaluate(new RPNExpression(exp, objects));
strVal = val.ToString();
status = expected == val;
Assert.AreEqual(expected, val);
}
catch
{
throw;
}
Console.WriteLine($"{name} => RPN: {exp} :: Expected: {expected} :: Value: {strVal} :: Test: {(status ? "PASS" : "FAIL")}");
}
static void Main(string[] args)
{
//var loggerFactory = LoggerFactory.Create(builder =>
//{
// builder.AddConsole().SetMinimumLevel(LogLevel.Debug);
//});
//ILogger logger = loggerFactory.CreateLogger<Program>();
//logger.LogError("This is log message.");
//Thread.Sleep(1000);
//return;
if (args.Length == 0)
{
ShowExamples();
return;
}
var expression = string.Join(' ', args);
Console.WriteLine(RPN.Evaluate(expression, null));
}
/// <summary>
/// 画range
/// </summary>
/// <param name="range"></param>
private void PaintRange(Range range, ReoGridControl grid, ref RPN rpn)
{
var sheet = grid.CurrentWorksheet;
//合并单元格
string _posString = range.Postion.TopLeft + ":" + range.Postion.BottomRight;
var _Gridrange = sheet.Ranges[_posString];
_Gridrange.Merge();
//设置range边框
sheet.SetRangeBorders(_Gridrange, BorderPositions.Outside, new RangeBorderStyle
{
Color = unvell.ReoGrid.Graphics.SolidColor.Black,
Style = BorderLineStyle.Solid,
});
//填充数据
switch (range.RangeType)
{
case RANGETYPE.Text: _Gridrange.Data = range.FormulaOrText;
//_Gridrange.Style.HorizontalAlign = ReoGridHorAlign.Center;
//_Gridrange.Style.VerticalAlign = ReoGridVerAlign.Middle;
break;
case RANGETYPE.Calc:
object value = rpn.Evaluate(range.FormulaOrText);
_Gridrange.Data = value;
sheet.SetRangeDataFormat(_Gridrange, CellDataFormatFlag.Number, range.NumberFormatArgs);
break;
default:
_Gridrange.Data = range.FormulaOrText;
break;
}
_Gridrange.Style.HorizontalAlign = range.HAlign;
_Gridrange.Style.VerticalAlign = range.VAlign;
_Gridrange.Style.FontName = range.Font;
_Gridrange.Style.FontSize = range.FontSize;
}
public int RPN_Test(string expr)
{
var res = RPN.Evaluate(expr);
return(res);
}
public Token ResolveExpression(List <Token> expr) // TODO
{
Token toReturn = new Token("", "");
// First, replace variable name references with their values.
expr = VariablesToValues(expr);
// Now check tokens are all the same type in the expression (except grammar tokens)
string exprResultType = CheckTypes(expr); // This func will throw error if they aren't
// exprResultType now stores the final expected type for when expression is resolved to one token
// e.g 1 + 1 => resolves to 'number'
// e.g "1" + "1" => resolves to 'string'
if (exprResultType.Equals("string"))
// Indicates that we are dealing with a string expression
{
// The only operation that can be done to strings in an expression is '+' for concat
if (expr.Count == 1)
{
toReturn = new Token("string", expr[0].Value());
}
// If there is only one token in the whole expression, it must just be a string
// Therefore we can just return the string as it's 1 token
else
{
// We must be dealing with concatenation
if (!expr[0].Type().Equals("string"))
{
throw new SyntaxError();
}
// Concatenation expressions MUST start with a string
// e.g string x = + "Hello World"; will cause ERROR as expr starts with '+'
string finalResult = expr[0].Value(); // First string in expression
int index = 1;
while (index < expr.Count)
{
if (expr[index].Type().Equals("operator"))
{
if (expr[index].Value().Equals("+") && index < expr.Count - 1)
{
finalResult += expr[index + 1].Value(); // Add NEXT string to final result
}
else
{
throw new TypeMatchError(); // Cannot do any other operation than '+' on strings
}
}
index++;
}
toReturn = new Token("string", finalResult);
}
}
else if (exprResultType.Equals("number"))
// Indicates we are dealing with a mathematical expression
{
TreeNode root = TreeBuilder.BuildAST(expr); // Create abstract syntax tree of mathematical expression
int result = RPN.Evaluate(Traversal.postOrder(root)); // Calculate result of RPN algorithm calculation
toReturn = new Token("number", result.ToString());
}
else
{
throw new SyntaxError(); // invalid expression type has somehow made it through, we cannot evaluate it so throw error.
}
return(toReturn);
}