public void EqualsSameObjectTest()
{
var token = new FunctionToken(Functions.Sine, 1);
Assert.True(token.Equals(token));
Assert.Equal(token, token);
}
public void EqualsNullTest()
{
var token = new FunctionToken(Functions.Sine, 1);
Assert.False(token.Equals(null));
Assert.NotEqual(null, token);
}
public void EqualsDiffTypeTest()
{
var token = new FunctionToken(Functions.Sine, 1);
Assert.False(token.Equals(1));
Assert.NotEqual((object)1, token);
}
public void EqualsDiffFuncTest()
{
var token1 = new FunctionToken(Functions.Sine, 1);
var token2 = new FunctionToken(Functions.Cosine, 1);
Assert.False(token1.Equals(token2));
Assert.NotEqual(token1, token2);
}
private int _CountParams(List<IToken> tokens, int index)
{
var func = (FunctionToken)tokens[index];
int countOfParams = 0;
int brackets = 1;
bool hasBraces = false;
bool oneParam = true;
int i = index + 2;
for (; i < tokens.Count;)
{
var token = tokens[i];
if (token is SymbolToken)
{
var symbol = token as SymbolToken;
if (symbol.Symbol == Symbols.OpenBrace)
hasBraces = true;
if (symbol.Symbol == Symbols.CloseBracket || symbol.Symbol == Symbols.CloseBrace)
{
brackets--;
if (brackets == 0)
break;
}
else if (symbol.Symbol == Symbols.OpenBracket || symbol.Symbol == Symbols.OpenBrace)
{
brackets++;
if (oneParam)
{
countOfParams++;
oneParam = false;
}
}
else if (symbol.Symbol == Symbols.Comma)
{
oneParam = true;
}
i++;
}
else if (token is FunctionToken)
{
if (oneParam)
{
countOfParams++;
oneParam = false;
}
var f = (FunctionToken)token;
if (f.Function == Functions.Matrix || f.Function == Functions.Vector)
hasBraces = true;
i = _CountParams(tokens, i) + 1;
}
else
{
if (oneParam)
{
countOfParams++;
oneParam = false;
}
i++;
}
}
if (func.Function == Functions.Vector && hasBraces)
tokens[index] = new FunctionToken(Functions.Matrix, countOfParams);
else
func.CountOfParams = countOfParams;
return i;
}
public void ToStringTest()
{
var token = new FunctionToken(Functions.Sine, 1);
Assert.Equal("Function: Sine (1)", token.ToString());
}
/// <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)
{
switch (token.Function)
{
case Functions.Absolute:
return new Abs();
case Functions.Sine:
return new Sin();
case Functions.Cosine:
return new Cos();
case Functions.Tangent:
return new Tan();
case Functions.Cotangent:
return new Cot();
case Functions.Secant:
return new Sec();
case Functions.Cosecant:
return new Csc();
case Functions.Arcsine:
return new Arcsin();
case Functions.Arccosine:
return new Arccos();
case Functions.Arctangent:
return new Arctan();
case Functions.Arccotangent:
return new Arccot();
case Functions.Arcsecant:
return new Arcsec();
case Functions.Arccosecant:
return new Arccsc();
case Functions.Sqrt:
return new Sqrt();
case Functions.Root:
return new Root();
case Functions.Ln:
return new Ln();
case Functions.Lg:
return new Lg();
case Functions.Log:
return new Log();
case Functions.Sineh:
return new Sinh();
case Functions.Cosineh:
return new Cosh();
case Functions.Tangenth:
return new Tanh();
case Functions.Cotangenth:
return new Coth();
case Functions.Secanth:
return new Sech();
case Functions.Cosecanth:
return new Csch();
case Functions.Arsineh:
return new Arsinh();
case Functions.Arcosineh:
return new Arcosh();
case Functions.Artangenth:
return new Artanh();
case Functions.Arcotangenth:
return new Arcoth();
case Functions.Arsecanth:
return new Arsech();
case Functions.Arcosecanth:
return new Arcsch();
case Functions.Exp:
return new Exp();
case Functions.GCD:
return new GCD();
case Functions.LCM:
return new LCM();
case Functions.Factorial:
return new Fact();
case Functions.Sum:
return new Sum();
case Functions.Product:
return new Product();
case Functions.Round:
return new Round();
case Functions.Floor:
return new Floor();
case Functions.Ceil:
return new Ceil();
case Functions.Derivative:
return new Derivative();
case Functions.Simplify:
return new Simplify();
case Functions.Define:
return new Define();
case Functions.Vector:
return new Vector();
case Functions.Matrix:
return new Matrix();
case Functions.Transpose:
return new Transpose();
case Functions.Determinant:
return new Determinant();
case Functions.Inverse:
return new Inverse();
case Functions.If:
return new If();
case Functions.For:
return new For();
case Functions.While:
return new While();
case Functions.Undefine:
return new Undefine();
default:
return null;
}
}
/// <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;
}
