private void TestAssignment(AssignmentOperationKind kind)
{
string text = "$a " + Operation.GetText(kind) + " 42";
var expr = NSScript.ParseExpression(text) as AssignmentExpression;
Assert.NotNull(expr);
Assert.Equal(SyntaxNodeKind.AssignmentExpression, expr.Kind);
Assert.Equal(kind, expr.OperationKind);
var target = expr.Target as Variable;
Assert.NotNull(target);
Assert.Equal("$a", target.Name.FullName);
var value = expr.Value as Literal;
Assert.NotNull(value);
Assert.Equal(42, value.Value.RawValue);
}
public static string GetText(AssignmentOperationKind assignmentOperationKind)
{
switch (assignmentOperationKind)
{
case AssignmentOperationKind.SimpleAssignment:
return("=");
case AssignmentOperationKind.AddAssignment:
return("+=");
case AssignmentOperationKind.SubtractAssignment:
return("-=");
case AssignmentOperationKind.MultiplyAssignment:
return("*=");
case AssignmentOperationKind.DivideAssignment:
return("/=");
default:
return(string.Empty);
}
}
public static AssignmentExpression Assignment(Variable target, AssignmentOperationKind operationKind, Expression value) => new AssignmentExpression(target, operationKind, value);
internal AssignmentExpression(Variable target, AssignmentOperationKind operationKind, Expression value)
{
Target = target;
OperationKind = operationKind;
Value = value;
}
private static Precedence GetOperationPrecedence(AssignmentOperationKind operationKind) => Precedence.Assignment;
