xgns.gno

  1package xgns
  2
  3import (
  4	"chain"
  5	"chain/runtime"
  6	"errors"
  7	"strings"
  8
  9	"gno.land/p/demo/tokens/grc20"
 10	"gno.land/p/nt/ownable"
 11	"gno.land/p/nt/ufmt"
 12
 13	"gno.land/r/gnoswap/access"
 14	"gno.land/r/gnoswap/halt"
 15
 16	prbac "gno.land/p/gnoswap/rbac"
 17)
 18
 19var (
 20	admin         = ownable.NewWithAddress(chain.PackageAddress(prbac.ROLE_GOV_STAKER.String()))
 21	token, ledger = grc20.NewToken("XGNS", "xGNS", 6)
 22)
 23
 24// TotalSupply returns the total supply of xGNS tokens.
 25func TotalSupply() int64 {
 26	return token.TotalSupply()
 27}
 28
 29// BalanceOf returns token balance for address.
 30//
 31// Parameters:
 32//   - owner: address to check balance for
 33//
 34// Returns balance amount.
 35func BalanceOf(owner address) int64 {
 36	return token.BalanceOf(owner)
 37}
 38
 39// Render returns a formatted representation of the token state.
 40func Render(path string) string {
 41	if path == "" {
 42		return token.RenderHome()
 43	}
 44
 45	parts := strings.Split(path, "/")
 46	switch parts[0] {
 47	case "balance":
 48		if len(parts) != 2 {
 49			return "404\n"
 50		}
 51		balance := token.BalanceOf(address(parts[1]))
 52		return ufmt.Sprintf("%d\n", balance)
 53	default:
 54		return "404\n"
 55	}
 56}
 57
 58// Mint mints tokens to address.
 59//
 60// Parameters:
 61//   - to: recipient address
 62//   - amount: amount to mint
 63//
 64// Only callable by governance staker contract.
 65func Mint(cur realm, to address, amount int64) {
 66	halt.AssertIsNotHaltedXGns()
 67
 68	caller := runtime.PreviousRealm().Address()
 69	access.AssertIsGovStaker(caller)
 70
 71	checkErr(ledger.Mint(to, amount))
 72}
 73
 74// Burn burns tokens from address.
 75//
 76// Parameters:
 77//   - from: address to burn from
 78//   - amount: amount to burn
 79//
 80// Only callable by governance staker contract.
 81func Burn(cur realm, from address, amount int64) {
 82	halt.AssertIsNotHaltedXGns()
 83
 84	caller := runtime.PreviousRealm().Address()
 85	access.AssertIsGovStaker(caller)
 86
 87	checkErr(ledger.Burn(from, amount))
 88}
 89
 90// SupplyInfo returns supply breakdown information.
 91//
 92// Returns:
 93//   - totalIssued: total xGNS tokens issued
 94//   - issuedByDelegate: tokens issued through governance delegation
 95//   - issuedByDepositGns: tokens issued through launchpad deposit
 96//   - error: error if launchpad address not found
 97func SupplyInfo() (totalIssued, issuedByDelegate, issuedByDepositGns int64, err error) {
 98	launchpad, ok := access.GetAddress(prbac.ROLE_LAUNCHPAD.String())
 99	if !ok {
100		return 0, 0, 0, errors.New("launchpad address not found")
101	}
102
103	totalIssued = token.TotalSupply()
104	issuedByDepositGns = token.BalanceOf(launchpad)
105	issuedByDelegate = totalIssued - issuedByDepositGns
106
107	return totalIssued, issuedByDelegate, issuedByDepositGns, nil
108}
109
110func checkErr(err error) {
111	if err != nil {
112		panic(err)
113	}
114}