private void Assign(Scope scope, string name, object val, bool isConst, object expected)
{
Expression expr = isConst
? (Expression) new ConstantExpression(val)
: (Expression) new VariableExpression(val.ToString(), scope);
var exp = new AssignmentStatement(name, expr, scope);
exp.Execute();
Assert.AreEqual(expected, scope.Get <object>(name));
}
public void TestAssignmentStatement()
{
ExecutionEnvironment e = new ExecutionEnvironment();
e.RegisterValue("a", 5);
Identifier i = new Identifier();
i.Variable = "a";
AssignmentStatement s = new AssignmentStatement();
s.Left = i;
Literal l = new Literal()
{
Raw = "7"
};
s.Right = l;
var c = s.Execute(e);
Assert.AreEqual(c.ReturnValue, 7);
e.RegisterValue("c", 5);
var dd = new AssignmentStatement()
{
Left = new Identifier()
{
Variable = "c"
}, Right = new BinaryExpression()
{
Left = new Identifier()
{
Variable = "c"
}, Operator = Operator.Add, Right = new Literal()
{
Raw = "2"
}
}
};
var cx = dd.Execute(e);
Assert.AreEqual(cx.ReturnValue, 7);
}