private void edExpression_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Return)
{
string res;
try
{
res = fCalc.Calc(edExpression.Text).ToString();
if (chkPutToClipboard.Checked)
{
Clipboard.SetDataObject(res);
}
}
catch (Exception)
{
res = "[ ??? ]";
}
lbOutput.Items.Add("> " + edExpression.Text);
lbOutput.Items.Add("= " + res);
lbOutput.SelectedIndex = lbOutput.Items.Count - 1;
edCalcResult.Text = res;
}
}
public void Test_Common()
{
ExpCalculator calc = new ExpCalculator();
Assert.IsNotNull(calc);
calc.CaseSensitive = false;
Assert.AreEqual(false, calc.CaseSensitive);
calc.OnGetVar += GetVarEventHandler;
Assert.Throws(typeof(CalculateException), () => { calc.Calc("12+"); }); // syntax error
Assert.Throws(typeof(CalculateException), () => { calc.Calc("(12+"); }); // syntax error
Assert.Throws(typeof(FormatException), () => { calc.Calc("5 + 0x"); }); // syntax error
Assert.Throws(typeof(CalculateException), () => { calc.Calc(")"); }); // syntax error
double val = calc.Calc("2 + 7.703 - 3");
Assert.AreEqual(Math.Round(val, 3), 6.703);
val = calc.Calc("2**3");
Assert.AreEqual(val, 8.0);
val = calc.Calc("2 * 3");
Assert.AreEqual(val, 6.0);
val = calc.Calc("3 / 2");
Assert.AreEqual(val, 1.5);
val = calc.Calc("3 % 2");
Assert.AreEqual(val, 1.0);
val = calc.Calc("3 %% 2");
Assert.AreEqual(val, 150.0);
Assert.AreEqual(-2.0005, calc.Calc("-2.0005"));
Assert.AreEqual(-2.0e+1, calc.Calc("-2.0e+1"));
Assert.AreEqual(-2.0e-1, calc.Calc("-2.0e-1"));
Assert.AreEqual(-2.0e0, calc.Calc("-2.0e0"));
Assert.AreEqual(525.0d, calc.Calc("5.25e+2"));
// variables
calc.ClearVars();
calc.SetVar("a", 10);
Assert.AreEqual(10, calc.GetVar("a"));
calc.SetVar("b", 2);
Assert.AreEqual(2, calc.GetVar("b"));
calc.SetVar("c", 0.75);
Assert.AreEqual(0.75, calc.GetVar("c"));
val = calc.Calc("a+b+c");
Assert.AreEqual(12.75, val);
val = calc.Calc("15 / ((a+b)-c)");
Assert.AreEqual(1.333, Math.Round(val, 3));
calc.SetVar("a", 20);
Assert.AreEqual(20, calc.GetVar("a"));
val = calc.Calc("a+b+c");
Assert.AreEqual(22.75, val);
val = calc.Calc("d=a+b+c");
Assert.AreEqual(22.75, calc.GetVar("d"));
val = calc.Calc("d = a + b + c; e = d * 2");
Assert.AreEqual(22.75, calc.GetVar("d"));
Assert.AreEqual(45.5, calc.GetVar("e"));
// functions
val = calc.Calc("round(12.378)");
Assert.AreEqual(12.0, val);
val = calc.Calc("round(12.578)");
Assert.AreEqual(13.0, val);
val = calc.Calc("trunc(12.578)");
Assert.AreEqual(12.0, val);
val = calc.Calc("int(12.578)");
Assert.AreEqual(12.0, val);
val = calc.Calc("frac(12.578)");
Assert.AreEqual(0.578, Math.Round(val, 3));
val = calc.Calc("sin(2)");
Assert.AreEqual(0.909, Math.Round(val, 3));
val = calc.Calc("cos(2)");
Assert.AreEqual(-0.416, Math.Round(val, 3));
val = calc.Calc("tan(2)");
Assert.AreEqual(-2.185, Math.Round(val, 3));
val = calc.Calc("atan(2)");
Assert.AreEqual(1.107, Math.Round(val, 3));
val = calc.Calc("exp(5)");
Assert.AreEqual(148.413, Math.Round(val, 3));
val = calc.Calc("ln(117)");
Assert.AreEqual(4.762, Math.Round(val, 3));
val = calc.Calc("sign(-15)");
Assert.AreEqual(-1, Math.Round(val, 3));
val = calc.Calc("sign(2)");
Assert.AreEqual(+1, Math.Round(val, 3));
val = calc.Calc("pi * 2");
Assert.AreEqual(6.283, Math.Round(val, 3));
val = calc.Calc("e");
Assert.AreEqual(2.718, Math.Round(val, 3));
// logic
val = calc.Calc("2 < 3");
Assert.AreEqual(1, Math.Round(val, 0));
val = calc.Calc("2 > 3");
Assert.AreEqual(0, Math.Round(val, 0));
val = calc.Calc("3 <= 3");
Assert.AreEqual(1, Math.Round(val, 0));
val = calc.Calc("2 >= 3");
Assert.AreEqual(0, Math.Round(val, 0));
val = calc.Calc("3 == 3");
Assert.AreEqual(1, Math.Round(val, 0));
val = calc.Calc("2 != 3");
Assert.AreEqual(1, Math.Round(val, 0));
// misc
val = calc.Calc("2 ^ 3"); // xor
Assert.AreEqual(1, Math.Round(val, 0));
val = calc.Calc("5 | 2"); // or
Assert.AreEqual(7, Math.Round(val, 0));
val = calc.Calc("9 & 5"); // and
Assert.AreEqual(1, Math.Round(val, 0));
val = calc.Calc("~15"); // inv
Assert.AreEqual(-16, Math.Round(val, 0));
val = calc.Calc("!-15"); // not
Assert.AreEqual(1, Math.Round(val, 0));
// vars
val = calc.Calc("15 - alpha");
Assert.AreEqual(0, Math.Round(val, 0));
Assert.Throws(typeof(CalculateException), () => { calc.Calc("15 - beta"); });
Assert.Throws(typeof(CalculateException), () => { calc.Calc("15\\"); });
Assert.Throws(typeof(CalculateException), () => { calc.Calc("15\"srfgsdf\""); });
Assert.Throws(typeof(CalculateException), () => { calc.Calc("abr(15)"); });
calc.OnGetVar -= GetVarEventHandler;
// numbers
val = calc.Calc("1537");
Assert.AreEqual(1537, Math.Round(val, 0));
val = calc.Calc("0b11000000001");
Assert.AreEqual(1537, Math.Round(val, 0));
val = calc.Calc("0x601");
Assert.AreEqual(1537, Math.Round(val, 0));
//val = calc.Calc("1`"); // 1` = 0,01745 rad
//Assert.AreEqual(0.01745, Math.Round(val, 5));
Assert.Throws(typeof(CalculateException), () => { calc.Calc("0x15j"); });
Assert.Throws(typeof(FormatException), () => { calc.Calc("0b015"); });
val = calc.Calc("if(3 == 3; 2; 3)");
Assert.AreEqual(2, Math.Round(val, 0));
val = calc.Calc("if(2 == 3; 2; 3)");
Assert.AreEqual(3, Math.Round(val, 0));
Assert.Throws(typeof(CalculateException), () => { calc.Calc("if(2 == 3)"); }); // syntax error
}