Module zamm_yin::graph::value_wrappers

Wrappers around values associated with nodes in the KB. This differs from the other wrappers package because this abstraction only wraps the values associated with nodes, while the other one wraps the nodes themselves.

Due to Rust restrictions around upcasting to Any, it appears necessary to create an extra wrapper.

Structs

StrongValue	KBValue for owned data.
WeakValue	KBValue for weak references to data.

Traits

KBValue

Wrapper for KB values, because Rust doesn't support upcasting at the moment, and the KB should support referring to external data structures that it doesn't own itself.

Functions

unwrap_closure	Returns the value held by a closure StrongValue. We need a RefCell here because somehow closures are mutable when called, and the Rc that wraps a KBValue prevents mutability.
unwrap_strong	Similar to unwrap_weak, returns the value held by a String-valued StrongValue.
unwrap_weak	Helper function for unwrapping values contained inside a WeakValue.

Type Definitions

KBClosure

Closure stored inside the KB.