getter_utils.gno

 1package staker
 2
 3import (
 4	sr "gno.land/r/gnoswap/staker"
 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// cloneExternalIncentiveEntry is the transformation for a pool's incentive
12// tree. ExternalIncentive is mutable and its setters are declared in
13// /r/gnoswap/staker, so an external holder of the stored pointer could write
14// realm state through it.
15func cloneExternalIncentiveEntry(value any) any {
16	incentive, ok := value.(*sr.ExternalIncentive)
17	if !ok {
18		return nil
19	}
20
21	return incentive.Clone()
22}
23
24// rewardCacheEntry, accumulationEntry, and historicalTickEntry are the
25// transformations for the UintTree-backed views. Their values are immutable
26// scalars, so nothing needs copying; they type-check instead, which keeps the
27// filtering the replaced slice getters did when an entry failed its cast.
28func rewardCacheEntry(value any) any {
29	reward, ok := value.(int64)
30	if !ok {
31		return nil
32	}
33
34	return reward
35}
36
37func accumulationEntry(value any) any {
38	accumulation, ok := value.(string)
39	if !ok {
40		return nil
41	}
42
43	return accumulation
44}
45
46func historicalTickEntry(value any) any {
47	tick, ok := value.(int32)
48	if !ok {
49		return nil
50	}
51
52	return tick
53}