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//! Wrappers around graph nodes that provide extended functionality at every level.


mod base_node;
mod final_node;
mod inheritance_node;

pub use base_node::{BaseNode, BaseNodeTrait};
pub use final_node::FinalNode;
pub use inheritance_node::{InheritanceNode, InheritanceNodeTrait};
use std::fmt::{Formatter, Result};
use std::rc::Rc;

/// All wrappers around a graph node will have these functions available.

pub trait CommonNodeTrait {
    /// The unique integer that's associated with this concept.

    fn id(&self) -> usize;

    /// Associate this concept with an internal name. The name does not need to be unique.

    fn set_internal_name(&mut self, name: String);

    /// The internal name that's associated with this concept, if one exists.

    fn internal_name(&self) -> Option<Rc<String>>;
}

/// Helper function for implementing the Debug trait for a node wrapper.

pub fn debug_wrapper(
    wrapper_type: &str,
    node: Box<&dyn CommonNodeTrait>,
    f: &mut Formatter,
) -> Result {
    match node.internal_name() {
        Some(name) => f.write_fmt(format_args!("{}({},{})", wrapper_type, node.id(), name)),
        None => f.write_fmt(format_args!("{}({})", wrapper_type, node.id())),
    }
}