/// <summary>
/// Default function
/// </summary>
/// <para>
/// Swaps the elements at index a and b in a list
/// </para>
/// <param name="list_expr"> the target <see cref="DynamicList"/> (as an <see cref="Expression"/>)</param>
/// <param name="a_expr"> index of the first element</param>
/// <param name="b_expr"> index of the second element</param>
/// <returns> <see cref="NullVar"/> (equivalent of null/void)</returns>
private static NullVar swapFunction(Expression list_expr, Expression a_expr, Expression b_expr)
{
// evaluate every expression
DynamicList list = list_expr.evaluate() as DynamicList;
Integer a = a_expr.evaluate() as Integer;
Integer b = b_expr.evaluate() as Integer;
// check indexes
list.validateIndex(a);
list.validateIndex(b);
// extract both values
Variable var_a = list.atIndex(a);
Variable var_b = list.atIndex(b);
// freeze the context
Context.freeze();
// change a
list.removeValue(a);
list.insertValue(var_b, a);
// change b
list.removeValue(b);
list.insertValue(var_a, b);
// unfreeze the context
Context.unfreeze();
// update manually (void)
if (list.isTraced())
{
list.tracer.update(new Event(
new Alteration("swap", list, list.getRawValue(), new dynamic[] { a.getRawValue(), b.getRawValue() })));
}
return(new NullVar());
}
public void remove(Parser.Integer index)
{
string name = list.atIndex(index).getName();
float time_animation = 3f;
Destroy(list_dict[name], time_animation / 2f);
list.removeValue(index);
GameObject[] obj_list = new GameObject[list.length().getValue() - index.getValue()];
for (int i = index.getValue(), u = 0; i < list.length().getValue(); i++, u++)
{
obj_list[u] = list_dict[list.atIndex(new Parser.Integer(i)).getName()];
}
StartCoroutine(Animation.removeAnimation(obj_list, name, new Vector3(-1, 0, 0), time_animation, 0, this));
}
/// <summary>
/// Delete the nth value of a list
/// </summary>
/// <param name="list_expr"> expression resulting in a <see cref="DynamicList"/> variable</param>
/// <param name="index_expr"> expression resulting in a <see cref="Integer"/> variable</param>
/// <returns> <see cref="NullVar"/> (equivalent of null/void)</returns>
private static NullVar deleteValueAt(Expression list_expr, Expression index_expr)
{
// extract list
Variable list_var = list_expr.evaluate();
Debugging.assert(list_var is DynamicList); // TypeError
DynamicList list = list_var as DynamicList;
// extract index
Variable index_var = index_expr.evaluate();
Debugging.assert(index_var is Integer); // TypeError
Integer index = index_var as Integer;
// delete
list.removeValue(index);
return(new NullVar());
}
