public static bool IsMatch(string expression)
{
try
{
_compiler.SetFunction(expression);
_compiler.Compile();
return(true);
}
catch (Exception)
{
return(false);
}
}
public void Sign()
{
var compiler = new EquationCompiler("4 + -3");
Assert.AreEqual(4 + -3, compiler.Calculate());
compiler.SetFunction("4+-3");
Assert.AreEqual(4 + -3, compiler.Calculate());
compiler.SetFunction("4 - -3");
Assert.AreEqual(4 - -3, compiler.Calculate());
compiler.SetFunction("4--3");
Assert.AreEqual(4 - -3, compiler.Calculate());
}
public void MultipleFunctionsPerObject()
{
var compiler = new EquationCompiler("abs(-4)");
Assert.AreEqual(Math.Abs(-4), compiler.Calculate());
compiler.SetFunction("acos(10)");
Assert.AreEqual(Math.Acos(10), compiler.Calculate());
}
public void NotEqual(double a, double b)
{
var compiler = new EquationCompiler("a!=b");
compiler.SetVariable("a", a);
compiler.SetVariable("b", b);
Assert.AreEqual(a != b, Convert.ToBoolean(compiler.Calculate()));
compiler.SetFunction("a<>b");
Assert.AreEqual(a != b, Convert.ToBoolean(compiler.Calculate()));
}
public void IfWithEquation(string condition, bool result, double a, double b, double c)
{
var compiler = new EquationCompiler(string.Format("if({0},(a+b),c)", condition));
compiler.SetVariable("a", a);
compiler.SetVariable("b", b);
compiler.SetVariable("c", c);
Assert.AreEqual((result ? a + b : c), compiler.Calculate());
compiler.SetFunction(string.Format("if({0},a,(b+c))", condition));
Assert.AreEqual((result ? a : b + c), compiler.Calculate());
}