public void OverrideConstTest()
{
IExpression exp = new Define(new Variable("π"), new Number(1));
ParameterCollection parameters = new ParameterCollection();
var answer = exp.Calculate(parameters);
Assert.AreEqual(1.0, parameters["π"]);
}
public void SimpDefineTest()
{
IExpression exp = new Define(new Variable("x"), new Number(1));
ParameterCollection parameters = new ParameterCollection();
var answer = exp.Calculate(parameters);
Assert.AreEqual(1.0, parameters["x"]);
Assert.AreEqual(double.NaN, answer);
}
public void DefineExpTest()
{
var exp = new Define(new Variable("x"), new Mul(new Number(4), new Add(new Number(8), new Number(1))));
var parameters = new ExpressionParameters();
var answer = exp.Execute(parameters);
Assert.Equal(36.0, parameters.Variables["x"]);
Assert.Equal("The value '4 * (8 + 1)' was assigned to the variable 'x'.", answer);
}
public void DefineExpTest()
{
IExpression exp = new Define(new Variable("x"), new Mul(new Number(4), new Add(new Number(8), new Number(1))));
ParameterCollection parameters = new ParameterCollection();
var answer = exp.Calculate(parameters);
Assert.AreEqual(36, parameters["x"]);
Assert.AreEqual(double.NaN, answer);
}
public void DefineWithFuncTest()
{
IExpression exp = new Define(new Variable("x"), new Sin(new Number(1)));
ParameterCollection parameters = new ParameterCollection();
ExpressionParameters expParams = new ExpressionParameters(AngleMeasurement.Radian, parameters);
var answer = exp.Calculate(expParams);
Assert.AreEqual(Math.Sin(1), parameters["x"]);
Assert.AreEqual(double.NaN, answer);
}
public void DefineWithFuncTest()
{
var exp = new Define(new Variable("x"), new Sin(new Number(1)));
var parameters = new ParameterCollection();
var expParams = new ExpressionParameters(AngleMeasurement.Radian, parameters);
var answer = exp.Execute(expParams);
Assert.Equal(Math.Sin(1), parameters["x"]);
Assert.Equal("The value 'sin(1)' was assigned to the variable 'x'.", answer);
}
public void DefineFuncWithParamsTest()
{
var uf = new UserFunction("s", 1);
var func = new Sin(new Variable("x"));
var exp = new Define(uf, func);
var parameters = new ExpressionParameters();
var result = exp.Execute(parameters);
Assert.Equal(func, parameters.Functions[uf]);
Assert.Equal("The expression 'sin(x)' was assigned to the function 's(x1)'.", result);
}
public void DefineFuncTest()
{
var uf = new UserFunction("s", new IExpression[0], 0);
var func = new Sin(new Number(1));
var exp = new Define(uf, func);
var parameters = new ExpressionParameters();
var result = exp.Execute(parameters);
Assert.Equal(func, parameters.Functions[uf]);
Assert.Equal("The expression 'sin(1)' was assigned to the function 's()'.", result);
}
public void CalculateWhileTest()
{
var parameters = new ExpressionParameters();
parameters.Variables.Add(new Parameter("x", 0));
var body = new Define(new Variable("x"), new Add(new Variable("x"), new Number(2)));
var cond = new LessThan(new Variable("x"), new Number(10));
var @while = new While(body, cond);
@while.Execute(parameters);
Assert.Equal(10.0, parameters.Variables["x"]);
}
public void CalculateForTest()
{
var parameters = new ExpressionParameters();
var init = new Define(new Variable("i"), new Number(0));
var cond = new LessThan(new Variable("i"), new Number(10));
var iter = new Define(new Variable("i"), new Add(new Variable("i"), new Number(1)));
var @for = new For(new Variable("i"), init, cond, iter);
@for.Execute(parameters);
Assert.Equal(10.0, parameters.Variables["i"]);
}
public void Define()
{
var define = new Define(new Variable("x"), new Add(new Number(2), new Number(2)));
var expected = new Define(new Variable("x"), new Number(4));
SimpleTest(define, expected);
}
public void SolveStringTest()
{
var lexer = new Mock<ILexer>();
var parser = new Mock<IParser>();
var simplifier = new Mock<ISimplifier>();
var strExp = "x := 1";
var exp = new Define(new Variable("x"), new Number(1));
var tokens = new List<IToken>
{
new FunctionToken(Functions.Define, 2),
new SymbolToken(Symbols.OpenBracket),
new VariableToken("x"),
new SymbolToken(Symbols.Comma),
new NumberToken(1),
new SymbolToken(Symbols.CloseBracket)
};
lexer.Setup(l => l.Tokenize(strExp)).Returns(() => tokens);
parser.Setup(p => p.Parse(tokens)).Returns(() => exp);
simplifier.Setup(s => s.Analyze(It.IsAny<Define>())).Returns<Define>(e => e);
var processor = new Processor(lexer.Object, parser.Object, simplifier.Object, null);
var result = processor.Solve<StringResult>(strExp);
lexer.Verify(l => l.Tokenize(It.IsAny<string>()), Times.Once());
parser.Verify(p => p.Parse(It.IsAny<IEnumerable<IToken>>()), Times.Once());
Assert.Equal("The value '1' was assigned to the variable 'x'.", result.Result);
}
public void OverrideConstTest()
{
var exp = new Define(new Variable("π"), new Number(1));
var parameters = new ExpressionParameters();
exp.Execute(parameters);
Assert.Equal(1.0, parameters.Variables["π"]);
}
public void SimpDefineTest()
{
var exp = new Define(new Variable("x"), new Number(1));
var parameters = new ExpressionParameters();
var answer = exp.Execute(parameters);
Assert.Equal(1.0, parameters.Variables["x"]);
Assert.Equal("The value '1' was assigned to the variable 'x'.", answer);
}
/// <summary>
/// Creates an expression object from <see cref="FunctionToken"/>.
/// </summary>
/// <param name="token">The function token.</param>
/// <returns>An expression.</returns>
protected virtual IExpression CreateFunction(FunctionToken token)
{
IExpression exp;
switch (token.Function)
{
case Functions.Add:
exp = new Add(); break;
case Functions.Sub:
exp = new Sub(); break;
case Functions.Mul:
exp = new Mul(); break;
case Functions.Div:
exp = new Div(); break;
case Functions.Pow:
exp = new Pow(); break;
case Functions.Absolute:
exp = new Abs(); break;
case Functions.Sine:
exp = new Sin(); break;
case Functions.Cosine:
exp = new Cos(); break;
case Functions.Tangent:
exp = new Tan(); break;
case Functions.Cotangent:
exp = new Cot(); break;
case Functions.Secant:
exp = new Sec(); break;
case Functions.Cosecant:
exp = new Csc(); break;
case Functions.Arcsine:
exp = new Arcsin(); break;
case Functions.Arccosine:
exp = new Arccos(); break;
case Functions.Arctangent:
exp = new Arctan(); break;
case Functions.Arccotangent:
exp = new Arccot(); break;
case Functions.Arcsecant:
exp = new Arcsec(); break;
case Functions.Arccosecant:
exp = new Arccsc(); break;
case Functions.Sqrt:
exp = new Sqrt(); break;
case Functions.Root:
exp = new Root(); break;
case Functions.Ln:
exp = new Ln(); break;
case Functions.Lg:
exp = new Lg(); break;
case Functions.Lb:
exp = new Lb(); break;
case Functions.Log:
exp = new Log(); break;
case Functions.Sineh:
exp = new Sinh(); break;
case Functions.Cosineh:
exp = new Cosh(); break;
case Functions.Tangenth:
exp = new Tanh(); break;
case Functions.Cotangenth:
exp = new Coth(); break;
case Functions.Secanth:
exp = new Sech(); break;
case Functions.Cosecanth:
exp = new Csch(); break;
case Functions.Arsineh:
exp = new Arsinh(); break;
case Functions.Arcosineh:
exp = new Arcosh(); break;
case Functions.Artangenth:
exp = new Artanh(); break;
case Functions.Arcotangenth:
exp = new Arcoth(); break;
case Functions.Arsecanth:
exp = new Arsech(); break;
case Functions.Arcosecanth:
exp = new Arcsch(); break;
case Functions.Exp:
exp = new Exp(); break;
case Functions.GCD:
exp = new GCD(); break;
case Functions.LCM:
exp = new LCM(); break;
case Functions.Factorial:
exp = new Fact(); break;
case Functions.Sum:
exp = new Sum(); break;
case Functions.Product:
exp = new Product(); break;
case Functions.Round:
exp = new Round(); break;
case Functions.Floor:
exp = new Floor(); break;
case Functions.Ceil:
exp = new Ceil(); break;
case Functions.Derivative:
exp = new Derivative(); break;
case Functions.Simplify:
exp = new Simplify(); break;
case Functions.Del:
exp = new Del(); break;
case Functions.Define:
exp = new Define(); break;
case Functions.Vector:
exp = new Vector(); break;
case Functions.Matrix:
exp = new Matrix(); break;
case Functions.Transpose:
exp = new Transpose(); break;
case Functions.Determinant:
exp = new Determinant(); break;
case Functions.Inverse:
exp = new Inverse(); break;
case Functions.If:
exp = new If(); break;
case Functions.For:
exp = new For(); break;
case Functions.While:
exp = new While(); break;
case Functions.Undefine:
exp = new Undefine(); break;
case Functions.Im:
exp = new Im(); break;
case Functions.Re:
exp = new Re(); break;
case Functions.Phase:
exp = new Phase(); break;
case Functions.Conjugate:
exp = new Conjugate(); break;
case Functions.Reciprocal:
exp = new Reciprocal(); break;
case Functions.Min:
exp = new Min(); break;
case Functions.Max:
exp = new Max(); break;
case Functions.Avg:
exp = new Avg(); break;
case Functions.Count:
exp = new Count(); break;
case Functions.Var:
exp = new Var(); break;
case Functions.Varp:
exp = new Varp(); break;
case Functions.Stdev:
exp = new Stdev(); break;
case Functions.Stdevp:
exp = new Stdevp(); break;
default:
exp = null; break;
}
var diff = exp as DifferentParametersExpression;
if (diff != null)
diff.ParametersCount = token.CountOfParams;
return exp;
}
