xgns.gno

  1package xgns
  2
  3import (
  4	"chain"
  5	"errors"
  6	"strings"
  7
  8	"gno.land/p/demo/tokens/grc20"
  9	ownable "gno.land/p/nt/ownable/v0"
 10	ufmt "gno.land/p/nt/ufmt/v0"
 11
 12	"gno.land/r/gnoswap/access"
 13	"gno.land/r/gnoswap/halt"
 14
 15	prbac "gno.land/p/gnoswap/rbac"
 16)
 17
 18var (
 19	admin = ownable.NewWithAddress(chain.PackageAddress(prbac.ROLE_GOV_STAKER.String()))
 20
 21	token  *grc20.Token
 22	ledger *grc20.PrivateLedger
 23)
 24
 25func init(cur realm) {
 26	token, ledger = grc20.NewToken(0, cur, "XGNS", "xGNS", 6)
 27}
 28
 29// TotalSupply returns the total supply of xGNS tokens.
 30func TotalSupply() int64 {
 31	return token.TotalSupply()
 32}
 33
 34// BalanceOf returns token balance for address.
 35//
 36// Parameters:
 37//   - owner: address to check balance for
 38//
 39// Returns balance amount.
 40func BalanceOf(owner address) int64 {
 41	return token.BalanceOf(owner)
 42}
 43
 44// Render returns a formatted representation of the token state.
 45func Render(path string) string {
 46	if path == "" {
 47		return token.RenderHome()
 48	}
 49
 50	parts := strings.Split(path, "/")
 51	switch parts[0] {
 52	case "balance":
 53		if len(parts) != 2 {
 54			return "404\n"
 55		}
 56		balance := token.BalanceOf(address(parts[1]))
 57		return ufmt.Sprintf("%d\n", balance)
 58	default:
 59		return "404\n"
 60	}
 61}
 62
 63// Mint mints tokens to address.
 64//
 65// Parameters:
 66//   - to: recipient address
 67//   - amount: amount to mint
 68//
 69// Only callable by governance staker contract.
 70func Mint(cur realm, to address, amount int64) {
 71	halt.AssertIsNotHaltedXGns()
 72
 73	caller := cur.Previous().Address()
 74	access.AssertIsGovStaker(caller)
 75
 76	checkErr(ledger.Mint(to, amount))
 77}
 78
 79// Burn burns tokens from address.
 80//
 81// Parameters:
 82//   - from: address to burn from
 83//   - amount: amount to burn
 84//
 85// Only callable by governance staker contract.
 86func Burn(cur realm, from address, amount int64) {
 87	halt.AssertIsNotHaltedWithdraw()
 88
 89	caller := cur.Previous().Address()
 90	access.AssertIsGovStaker(caller)
 91
 92	checkErr(ledger.Burn(from, amount))
 93}
 94
 95// SupplyInfo returns supply breakdown information.
 96//
 97// Returns:
 98//   - totalIssued: total xGNS tokens issued
 99//   - issuedByDelegate: tokens issued through governance delegation
100//   - issuedByDepositGns: tokens issued through launchpad deposit
101//   - error: error if launchpad address not found
102func SupplyInfo() (totalIssued, issuedByDelegate, issuedByDepositGns int64, err error) {
103	launchpad, ok := access.GetAddress(prbac.ROLE_LAUNCHPAD.String())
104	if !ok {
105		return 0, 0, 0, errors.New("launchpad address not found")
106	}
107
108	totalIssued = token.TotalSupply()
109	issuedByDepositGns = token.BalanceOf(launchpad)
110	issuedByDelegate = totalIssued - issuedByDepositGns
111
112	return totalIssued, issuedByDelegate, issuedByDepositGns, nil
113}
114
115func checkErr(err error) {
116	if err != nil {
117		panic(err)
118	}
119}