utils.gno

 1package gns
 2
 3import (
 4	gnsmath "gno.land/p/gnoswap/gnsmath/v1"
 5	ufmt "gno.land/p/nt/ufmt/v0"
 6)
 7
 8// validYear validates that year is within halving period range (1-12).
 9// Returns error if year is outside the valid range.
10func validYear(year int64) error {
11	if year < HALVING_START_YEAR || year > HALVING_END_YEAR {
12		return makeErrorWithDetails(errInvalidYear, ufmt.Sprintf("year: %d", year))
13	}
14
15	return nil
16}
17
18// validEmissionAmount validates that the emission amount does not exceed maximum.
19// Returns error if minting the amount would exceed MAX_EMISSION_AMOUNT.
20func validEmissionAmount(amount int64) error {
21	if amount < 0 {
22		return makeErrorWithDetails(errInvalidEmissionAmount, ufmt.Sprintf("emission amount cannot be negative: %d", amount))
23	}
24
25	if gnsmath.SafeAddInt64(amount, MintedEmissionAmount()) > MAX_EMISSION_AMOUNT {
26		return makeErrorWithDetails(errTooManyEmission, ufmt.Sprintf("too many emission amount: %d", amount))
27	}
28
29	return nil
30}
31
32// i64Min returns the smaller of two int64 values.
33func i64Min(x, y int64) int64 {
34	if x < y {
35		return x
36	}
37	return y
38}