Function result_memoizable

compiler/src/modules/vm/cache.rs:232–236

Memoize only immediates (int/float/bool/None) and immutable heap objects; fresh mutable containers or tuples/sets wrapping them must stay per-call to avoid aliasing and falsifying `is`. */

(result: Val, heap: &super::types::HeapPool)

/* Memoize only immediates (int/float/bool/None) and immutable heap objects; fresh mutable containers or tuples/sets wrapping them must stay per-call to avoid aliasing and falsifying `is`. */
fn result_memoizable(result: Val, heap: &super::types::HeapPool) -> bool {
    use super::types::HeapObj;
    if !result.is_heap() { return true; }
    matches!(heap.try_get(result), Some(HeapObj::Str(_) | HeapObj::Bytes(_) | HeapObj::LongInt(_)))
}

// Indexed by dense `fi`; Vec gives O(1) lookup with no HashMap monomorphization.
pub struct Templates { slots: Vec<Vec<TplEntry>> }