Contract con_luck_lst001


Contract Code


  
1 __balances = Hash(default_value=0, contract='con_luck_lst001', name='balances')
2 __metadata = Hash(contract='con_luck_lst001', name='metadata')
3
4
5 def ____():
6 __balances[ctx.caller] = 1000000
7 __metadata['token_name'] = 'Luckies'
8 __metadata['token_symbol'] = 'LUCK'
9 __metadata['operator'] = ctx.caller
10
11
12 @__export('con_luck_lst001')
13 def change_metadata(key: str, value: Any):
14 assert ctx.caller == __metadata['operator'
15 ], 'Only operator can set metadata!'
16 __metadata[key] = value
17
18
19 @__export('con_luck_lst001')
20 def transfer(amount: float, to: str):
21 assert amount > 0, 'Cannot send negative balances!'
22 assert __balances[ctx.caller] >= amount, 'Not enough coins to send!'
23 __balances[ctx.caller] -= amount
24 __balances[to] += amount
25
26
27 @__export('con_luck_lst001')
28 def approve(amount: float, to: str):
29 assert amount > 0, 'Cannot send negative balances!'
30 __balances[ctx.caller, to] += amount
31
32
33 @__export('con_luck_lst001')
34 def transfer_from(amount: float, to: str, main_account: str):
35 assert amount > 0, 'Cannot send negative balances!'
36 assert __balances[main_account, ctx.caller
37 ] >= amount, 'Not enough coins approved to send! You have {} and are trying to spend {}'.format(
38 __balances[main_account, ctx.caller], amount)
39 assert __balances[main_account] >= amount, 'Not enough coins to send!'
40 __balances[main_account, ctx.caller] -= amount
41 __balances[main_account] -= amount
42 __balances[to] += amount
43

Byte Code

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