getter_utils.gno

 1package pool
 2
 3import (
 4	pl "gno.land/r/gnoswap/pool"
 5)
 6
 7// The functions below are makeEntrySafeFn transformations handed to
 8// rotree.Wrap. They run on every read through a read-only view, so each one
 9// returns a value the caller may hold without reaching realm-owned state.
10
11// clonePoolEntry is the transformation for the pool tree. Pool is mutable and
12// its setters are declared in /r/gnoswap/pool, so an external holder of the
13// stored pointer could write realm state through it.
14//
15// Pool.Clone leaves the pool's collections nil; see it for which lookups read
16// them instead.
17func clonePoolEntry(value any) any {
18	pool, ok := value.(*pl.Pool)
19	if !ok {
20		return nil
21	}
22
23	return pool.Clone()
24}