public void MinusValueAtStart(string input, MathToken token)
{
var calulatorNodes = sut.Parse(input);
Assert.That(calulatorNodes[0].Index, Is.EqualTo(0));
Assert.That(((CalulatorValueNode)calulatorNodes[0]).Value, Is.EqualTo(-1m));
}
protected MathOperator(MathToken token, int precedence, ICalculatorProxy proxy, CalculatorProxy.SingleBinaryOperation operation)
: base(token.Token, token.Index)
{
this.Precedence = precedence;
this.proxy = proxy;
this.operation = operation;
}
protected MathOperator(MathToken token, int precedence, ICalculatorProxy proxy, CalculatorProxy.SingleBinaryOperation operation)
: base(token.Token, token.Index)
{
this.Precedence = precedence;
this.proxy = proxy;
this.operation = operation;
}
public void GetMaxPrecedence()
{
List <MathToken> tokens = _lexer.GetTokens("3 + 3 * 2");
MathToken token = _precedence.GetMaxPrecedence(tokens);
MathOperator op = OperatorFactory.Create(token.Token);
Assert.AreEqual(op.Token, "*");
}
public void MathSymbols(string input, MathToken token)
{
var calulatorNodes = sut.Parse(input);
Assert.That(calulatorNodes[0].Index, Is.EqualTo(0));
Assert.That(((CalulatorValueNode)calulatorNodes[0]).Value, Is.EqualTo(1m));
Assert.That(calulatorNodes[1].Index, Is.EqualTo(1));
Assert.That(((CalculatorOperationNode)calulatorNodes[1]).Token, Is.EqualTo(token));
Assert.That(calulatorNodes[2].Index, Is.EqualTo(2));
Assert.That(((CalulatorValueNode)calulatorNodes[2]).Value, Is.EqualTo(1m));
}
public void IsOperator()
{
var add = new MathToken("+", 0);
var substract = new MathToken("-", 0);
var multiply = new MathToken("-", 0);
var divide = new MathToken("/", 0);
Assert.IsTrue(add.IsOperator());
Assert.IsTrue(substract.IsOperator());
Assert.IsTrue(multiply.IsOperator());
Assert.IsTrue(divide.IsOperator());
}
public void IsOperator()
{
var add = new MathToken("+", 0);
var substract = new MathToken("-", 0);
var multiply = new MathToken("-", 0);
var divide = new MathToken("/", 0);
Assert.IsTrue(add.IsOperator());
Assert.IsTrue(substract.IsOperator());
Assert.IsTrue(multiply.IsOperator());
Assert.IsTrue(divide.IsOperator());
}
private List <int> GetIndexs(List <ICalulatorNode> calculatorOperationNodes, MathToken token)
{
var indexsOfElement = new List <int>();
while (calculatorOperationNodes.OfType <CalculatorOperationNode>().Any(e => e.Token == token))
{
var index = calculatorOperationNodes.OfType <CalculatorOperationNode>().First(el => el.Token == token)
.Index;
indexsOfElement.Add(index);
((CalculatorOperationNode)calculatorOperationNodes[index]).Token = MathToken.Blank;
}
return(indexsOfElement);
}
public MathOperator Create(MathToken token)
{
switch (token.Token)
{
case "+":
return new AddOperator(token, this.proxy, this.calculator);
case "-":
return new SubstractOperator(token, this.proxy, this.calculator);
case "*":
return new MultiplyOperator(token, this.proxy, this.calculator);
case "/":
return new DivideOperator(token, this.proxy, this.calculator);
default:
throw new ArgumentException("Not recognized operator");
}
}
private decimal PerformOperation(decimal result, MathToken operation, decimal operationValue)
{
switch (operation)
{
case MathToken.Add:
result = math.Add(result, operationValue);
break;
case MathToken.Subtract:
result = math.Sub(result, operationValue);
break;
case MathToken.Multiply:
result = math.Multiply(result, operationValue);
break;
case MathToken.Divide:
result = math.Divide(result, operationValue);
break;
}
return(result);
}
public List <ICalulatorNode> Parse(string input)
{
var calulatorNodes = new List <ICalulatorNode>();
//macthes both : and / as divide symbol
string Pattern = @"[\d]+|[\*\+\(\)\-\/\:]";
Regex rex = new Regex(Pattern,
RegexOptions.Compiled | RegexOptions.IgnoreCase);
MatchCollection matches = rex.Matches(input);
int index = 0;
foreach (Match match in matches)
{
int parsedresult;
var tryParse = int.TryParse(match.Value, out parsedresult);
if (tryParse)
{
if (CheckIFMinus(calulatorNodes))
{
calulatorNodes[index - 1] = new CalulatorValueNode(-parsedresult, index - 1);
}
else
{
calulatorNodes.Add(new CalulatorValueNode(parsedresult, index));
index++;
}
}
else
{
MathToken token = ParseToken(match.Value);
calulatorNodes.Add(new CalculatorOperationNode(token, index));
index++;
}
}
return(calulatorNodes);
}
public void IntValue()
{
var token = new MathToken("7", 0);
Assert.AreEqual(7, token.IntValue);
}
public MultiplyOperator(MathToken token, ICalculatorProxy proxy, ICalculator calculator) : base(token, 2, proxy, calculator.Multiply)
{
}
public ICalculatorBuilder AddSymbol(MathToken token)
{
_calculatorNodes.Add(new CalculatorOperationNode(token, _calculatorNodes.Count));
return(this);
}
public SubstractOperator(MathToken token, ICalculatorProxy proxy, ICalculator calculator)
: base(token, 1, proxy, calculator.Substract)
{
}
public int Resolve(MathToken n1, MathToken n2)
{
var result = this.proxy.BinaryOperation(this.operation, n1.IntValue, n2.IntValue);
return result;
}
public void NumberIsNotOperator()
{
var token = new MathToken("33", 0);
Assert.IsFalse(token.IsOperator());
}
public MultiplyOperator(MathToken token, ICalculatorProxy proxy, ICalculator calculator)
: base(token, 2, proxy, calculator.Multiply)
{
}
public AddOperator(MathToken token, ICalculatorProxy proxy, ICalculator calculator) : base(token, 1, proxy, calculator.Add)
{
}
public DivideOperator(MathToken token, ICalculatorProxy proxy, ICalculator calculator) : base(token, 2, proxy, calculator.Divide)
{
}
public int Resolve(MathToken n1, MathToken n2)
{
var result = this.proxy.BinaryOperation(this.operation, n1.IntValue, n2.IntValue);
return(result);
}
public SubstractOperator(MathToken token, ICalculatorProxy proxy, ICalculator calculator) : base(token, 1, proxy, calculator.Substract)
{
}
public void IntValue()
{
var token = new MathToken("7", 0);
Assert.AreEqual(7, token.IntValue);
}
public void NumberIsNotOperator()
{
var token = new MathToken("33", 0);
Assert.IsFalse(token.IsOperator());
}
public AddOperator(MathToken token, ICalculatorProxy proxy, ICalculator calculator)
: base(token, 1, proxy, calculator.Add)
{
}
public DivideOperator(MathToken token, ICalculatorProxy proxy, ICalculator calculator)
: base(token, 2, proxy, calculator.Divide)
{
}
public CalculatorOperationNode(MathToken token, int index)
{
Token = token;
Index = index;
}