fatgnot.gno

 1package fatgnot
 2
 3var (
 4	owner       string = "g1pd2jqrgc0hwsx3evqk8lakvz7y89zkx4nc78g0"
 5	name        string = "Fat Gno.Land"
 6	symbol      string = "FATGNOT"
 7	decimals    uint8  = 6
 8	totalSupply uint64 = 1000000000000
 9	balances           = make(map[string]uint64)
10	allowances         = make(map[string]map[string]uint64)
11)
12
13func init() {
14	balances[owner] = totalSupply
15}
16
17func Name() string { return name }
18func Symbol() string { return symbol }
19func Decimals() uint8 { return decimals }
20func TotalSupply() uint64 { return totalSupply }
21func BalanceOf(account string) uint64 { return balances[account] }
22
23func Allowance(ownerAddr, spender string) uint64 {
24	if allocs, ok := allowances[ownerAddr]; ok {
25		return allocs[spender]
26	}
27	return 0
28}
29
30func Transfer(caller, to string, amount uint64) string {
31	if balances[caller] < amount {
32		panic("insufficient balance")
33	}
34	balances[caller] -= amount
35	balances[to] += amount
36	return "Transfer successful"
37}
38
39func Approve(caller, spender string, amount uint64) string {
40	if allowances[caller] == nil {
41		allowances[caller] = make(map[string]uint64)
42	}
43	allowances[caller][spender] = amount
44	return "Approve successful"
45}
46
47func TransferFrom(caller, from, to string, amount uint64) string {
48	if allowances[from][caller] < amount {
49		panic("insufficient allowance")
50	}
51	if balances[from] < amount {
52		panic("insufficient balance")
53	}
54	allowances[from][caller] -= amount
55	balances[from] -= amount
56	balances[to] += amount
57	return "TransferFrom successful"
58}