{"functions": ["token_mint_free", "token_mint", "token_accept", "token_burn", "token_mint_once", "token_create", "token_send", "token_transfer"], "snippet": "def token_create(info, args):\n    assert args['f'] == 'token_create'\n\n    sender = info['sender']\n    addr = handle_lookup(sender)\n    owner, _ = get('asset', 'owner', None, tick)\n    assert owner == addr\n\n    tick = args['a'][0]\n    assert type(tick) is str\n    assert len(tick) > 0 and len(tick) < 42\n    assert tick[0] in string.ascii_uppercase\n    assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n    name = args['a'][1]\n    assert type(name) is str\n    decimal = int(args['a'][2])\n    assert type(decimal) is int\n    assert decimal >= 0 and decimal <= 18\n\n    functions = ['token_transfer', 'token_mint_once', 'asset_update_ownership', 'asset_update_functions']\n    if len(args['a']) == 4:\n        functions = args['a'][3]\n        assert type(functions) is list\n\n    put(addr, tick, 'name', name)\n    put(addr, tick, 'decimal', decimal)\n    put(addr, 'asset', 'functions', functions, tick)\n    event('TokenCreated', [tick, name, decimal, functions])\n\n\ndef token_mint_once(info, args):\n    tick = args['a'][0]\n    assert type(tick) is str\n    assert len(tick) > 0 and len(tick) < 42\n    assert tick[0] in string.ascii_uppercase\n    assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n    assert args['f'] == 'token_mint_once'\n    functions, _ = get('asset', 'functions', [], tick)\n    assert args['f'] in functions\n\n    sender = info['sender']\n    addr = handle_lookup(sender)\n    owner, _ = get('asset', 'owner', None, tick)\n    assert owner == addr\n\n    value = int(args['a'][1])\n    assert value > 0\n\n    total, _ = get(tick, 'total', None)\n    assert total is None, \"Token already minted\"\n    put(addr, tick, 'total', value)\n\n    balance, _ = get(tick, 'balance', 0, addr)\n    balance += value\n    put(addr, tick, 'balance', balance, addr)\n    event('TokenMintedOnce', [tick, total])\n\n\ndef token_mint(info, args):\n    tick = args['a'][0]\n    assert type(tick) is str\n    assert len(tick) > 0 and len(tick) < 42\n    assert tick[0] in string.ascii_uppercase\n    assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n    assert args['f'] == 'token_mint'\n    functions, _ = get('asset', 'functions', [], tick)\n    assert args['f'] in functions\n\n    sender = info['sender']\n    addr = handle_lookup(sender)\n    owner, _ = get('asset', 'owner', None, tick)\n    assert owner == addr\n\n    value = int(args['a'][1])\n    assert value > 0\n\n    balance, _ = get(tick, 'balance', 0, addr)\n    balance += value\n    put(addr, tick, 'balance', balance, addr)\n\n    total, _ = get(tick, 'total', 0)\n    total += value\n    put(addr, tick, 'total', total)\n    event('TokenMinted', [tick, value, total])\n\n\ndef token_burn(info, args):\n    tick = args['a'][0]\n    assert type(tick) is str\n    assert len(tick) > 0 and len(tick) < 42\n    assert tick[0] in string.ascii_uppercase\n    assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n    assert args['f'] == 'token_burn'\n    functions, _ = get('asset', 'functions', [], tick)\n    assert args['f'] in functions\n\n    sender = info['sender']\n    addr = handle_lookup(sender)\n    owner, _ = get('asset', 'owner', None, tick)\n    assert owner == addr\n\n    value = int(args['a'][1])\n    assert value > 0\n\n    balance, _ = get(tick, 'balance', 0, addr)\n    balance -= value\n    assert balance >= 0\n\n    total, _ = get(tick, 'total', 0, addr)\n    total -= value\n    assert total >= 0\n\n    put(addr, tick, 'balance', balance, addr)\n    put(addr, tick, 'total', total)\n    event('TokenBurned', [tick, value, total])\n\n\ndef token_transfer(info, args):\n    tick = args['a'][0]\n    assert type(tick) is str\n    assert len(tick) > 0 and len(tick) < 42\n    assert tick[0] in string.ascii_uppercase\n    assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n    assert args['f'] == 'token_transfer'\n    functions, _ = get('asset', 'functions', [], tick)\n    assert args['f'] in functions\n\n    receiver = args['a'][1].lower()\n    assert len(receiver) <= 42\n    assert type(receiver) is str\n    if len(receiver) == 42:\n        assert receiver.startswith('0x')\n        assert set(receiver[2:]) <= set(string.digits+'abcdef')\n    else:\n        assert len(receiver) > 4\n\n    sender = info['sender']\n    addr = handle_lookup(sender)\n\n    value = int(args['a'][2])\n    assert value > 0\n\n    sender_balance, _ = get(tick, 'balance', 0, addr)\n    assert sender_balance >= value\n    sender_balance -= value\n    put(addr, tick, 'balance', sender_balance, addr)\n    receiver_balance, _ = get(tick, 'balance', 0, receiver)\n    receiver_balance += value\n    put(receiver, tick, 'balance', receiver_balance, receiver)\n    event('TokenTransfer', [tick, addr, receiver, value])\n\n\ndef token_send(info, args):\n    tick = args['a'][0]\n    assert type(tick) is str\n    assert len(tick) > 0 and len(tick) < 42\n    assert tick[0] in string.ascii_uppercase\n    assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n    assert args['f'] == 'token_send'\n    functions, _ = get('asset', 'functions', [], tick)\n    assert args['f'] in functions\n\n    sender = info['sender']\n    addr = handle_lookup(sender)\n\n    spender = args['a'][1].lower()  # the address allowed to spend\n    assert len(spender) <= 42\n    assert type(spender) is str\n    if len(spender) == 42:\n        assert spender.startswith('0x')\n        assert set(spender[2:]) <= set(string.digits+'abcdef')\n    else:\n        assert len(spender) > 4\n\n    value = int(args['a'][2])\n    assert value >= 0\n\n    put(addr, tick, 'allowance', value, f'{addr},{spender}')\n    event('TokenSendApproval', [tick, addr, spender, value])\n\n\ndef token_accept(info, args):\n    tick = args['a'][0]\n    assert type(tick) is str\n    assert len(tick) > 0 and len(tick) < 42\n    assert tick[0] in string.ascii_uppercase\n    assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n    assert args['f'] == 'token_accept'\n    functions, _ = get('asset', 'functions', [], tick)\n    assert args['f'] in functions\n\n    from_addr = args['a'][1].lower()  # the address from which tokens are withdrawn\n    assert len(from_addr) <= 42\n    assert type(from_addr) is str\n    if len(from_addr) == 42:\n        assert from_addr.startswith('0x')\n        assert set(from_addr[2:]) <= set(string.digits+'abcdef')\n    else:\n        assert len(from_addr) > 4\n\n    to_addr = info['sender']\n    to_addr = handle_lookup(to_addr)\n    value = int(args['a'][2])\n    assert value > 0\n\n    allowance, _ = get(tick, 'allowance', 0, f'{from_addr},{to_addr}')\n    from_balance, _ = get(tick, 'balance', 0, from_addr)\n    allowance -= value\n    assert allowance >= 0\n    from_balance -= value\n    assert from_balance >= 0\n    put(from_addr, tick, 'allowance', allowance, f'{from_addr},{to_addr}')\n    put(from_addr, tick, 'balance', from_balance, from_addr)\n\n    to_balance, _ = get(tick, 'balance', 0, to_addr)\n    to_balance += value\n    put(to_addr, tick, 'balance', to_balance, to_addr)\n\n    event('TokenSent', [tick, from_addr, to_addr, value])\n\n"}