Method mro_of

compiler/src/modules/vm/handlers/methods.rs:32–37

The cached C3 linearization of `cls`, or `[cls]` when uncached (native classes, or an inconsistent hierarchy that `c3_merge` declined to cache).

(&self, c: Val)

impl<'a> VM<'a> {
    // The cached C3 linearization of `cls`, or `[cls]` when uncached (native classes, or an inconsistent hierarchy that `c3_merge` declined to cache).
    fn mro_of(&self, c: Val) -> alloc::vec::Vec<Val> {
        match self.mro_cache.get(&c.0) {
            Some(r) => (**r).clone(),
            None => alloc::vec![c],
        }
    }

    /* C3 merge of the bases' linearizations plus the bases list itself, the tail of `L[cls] = cls :: merge(...)`. `cls` is prepended by the caller (it isn't allocated yet at validation time). Errs on an inconsistent hierarchy, matching CPython's `TypeError` at class creation. */
    pub(crate) fn c3_merge(&self, bases: &[Val]) -> Result<alloc::vec::Vec<Val>, VmErr> {