Contract con_testest_lst001


Contract Code

1 balances = Hash(default_value=0)
2 metadata = Hash()
3
4 @construct
5 def seed():
6 balances[ctx.caller] = 100
7
8 metadata['token_name'] = "TESTEST"
9 metadata['token_symbol'] = "TESTEST"
10 metadata['operator'] = ctx.caller
11
12 @export
13 def change_metadata(key: str, value: Any):
14 assert ctx.caller == metadata['operator'], 'Only operator can set metadata!'
15 metadata[key] = value
16
17 @export
18 def transfer(amount: float, to: str):
19 assert amount > 0, 'Cannot send negative balances!'
20 assert balances[ctx.caller] >= amount, 'Not enough coins to send!'
21
22 balances[ctx.caller] -= amount
23 balances[to] += amount
24
25 @export
26 def approve(amount: float, to: str):
27 assert amount > 0, 'Cannot send negative balances!'
28 balances[ctx.caller, to] += amount
29
30
31 @export
32 def transfer_from(amount: float, to: str, main_account: str):
33 assert amount > 0, 'Cannot send negative balances!'
34 assert balances[main_account, ctx.caller] >= amount, 'Not enough coins approved to send! You have {} and are trying to spend {}'\
35 .format(balances[main_account, ctx.caller], amount)
36 assert balances[main_account] >= amount, 'Not enough coins to send!'
37
38 balances[main_account, ctx.caller] -= amount
39 balances[main_account] -= amount
40 balances[to] += amount

Byte Code

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