Contract con_lusd_lst001


Contract Code

1 # LST001
2 balances = Hash(default_value=0)
3
4 # LST002
5 metadata = Hash()
6
7 @construct
8 def seed():
9 # LST002
10 metadata['operator'] = ctx.caller
11 # operator needs to be the clearinghouse contract
12 metadata['owner'] = "con_lamden_link_bsc_v1"
13
14 # LST002
15 @export
16 def change_metadata(key: str, value: Any):
17 assert ctx.caller == metadata['operator'], 'Only operator can set metadata!'
18 metadata[key] = value
19
20 @export
21 def mint(amount: float, to: str):
22 owner = metadata['owner']
23 assert ctx.caller == owner, f'Only owner can mint! Current owner is {owner}, Caller is {ctx.caller}'
24 assert amount > 0, 'Cannot mint negative balances!'
25 balances[to] += amount
26
27 # LST001
28 @export
29 def transfer(amount: float, to: str):
30 assert amount > 0, 'Cannot send negative balances!'
31 assert balances[ctx.caller] >= amount, 'Not enough coins to send!'
32
33 balances[ctx.caller] -= amount
34 balances[to] += amount
35
36 # LST001
37 @export
38 def approve(amount: float, to: str):
39 assert amount > 0, 'Cannot send negative balances!'
40 balances[ctx.caller, to] += amount
41
42 # LST001
43 @export
44 def transfer_from(amount: float, to: str, main_account: str):
45 assert amount > 0, 'Cannot send negative balances!'
46 assert balances[main_account, ctx.caller] >= amount, 'Not enough coins approved to send! You have {} and are trying to spend {}'\
47 .format(balances[main_account, ctx.caller], amount)
48 assert balances[main_account] >= amount, 'Not enough coins to send!'
49
50 balances[main_account, ctx.caller] -= amount
51 balances[main_account] -= amount
52 balances[to] += amount
53
54

Byte Code

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