Contract currency_2
| Created On | NaN secs ago - Invalid Date UTC+0 |
Contract Code
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import currency
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__balances = Hash(default_value=0, contract='currency_2', name='balances')
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__tau_ratio = Variable(contract='currency_2', name='tau_ratio')
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__total_supply = Variable(contract='currency_2', name='total_supply')
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__tau_refund_amount = Variable(contract='currency_2', name='tau_refund_amount')
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__operator = Variable(contract='currency_2', name='operator')
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def ____():
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__balances[ctx.signer] = 100
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__operator.set(ctx.signer)
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__total_supply.set(100)
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__tau_refund_amount.set(0)
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__tau_ratio.set(1)
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@__export('currency_2')
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def transfer(amount: float, to: str):
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assert amount > 0, 'Cannot send negative balances!'
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amount = amount / __tau_ratio.get()
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sender = ctx.caller
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if ctx.signer == ctx.caller and __tau_refund_amount.get() > 0:
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currency.transfer(__tau_refund_amount.get(), ctx.caller)
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assert __balances[sender] >= amount, 'Not enough coins to send!'
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__balances[sender] -= amount
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__balances[to] += amount
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@__export('currency_2')
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def balance_of(account: str):
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return __balances[account] * __tau_ratio.get()
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@__export('currency_2')
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def allowance(owner: str, spender: str):
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return __balances[owner, spender] * __tau_ratio.get()
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@__export('currency_2')
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def approve(amount: float, to: str):
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assert amount > 0, 'Cannot send negative balances!'
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amount = amount / __tau_ratio.get()
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sender = ctx.caller
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__balances[sender, to] += amount
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return __balances[sender, to] * __tau_ratio.get()
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@__export('currency_2')
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def transfer_from(amount: float, to: str, main_account: str):
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assert amount > 0, 'Cannot send negative balances!'
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amount = amount / __tau_ratio.get()
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sender = ctx.caller
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assert __balances[main_account, sender
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] >= amount, 'Not enough coins approved to send! You have {} and are trying to spend {}'.format(
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__balances[main_account, sender], amount)
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assert __balances[main_account] >= amount, 'Not enough coins to send!'
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__balances[main_account, sender] -= amount
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__balances[main_account] -= amount
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__balances[to] += amount
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@__export('currency_2')
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def determine_ratio():
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ratio = currency.balance_of(ctx.this) / __total_supply.get()
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__tau_ratio.set(ratio)
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return ratio
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@__export('currency_2')
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def legacy_transfer(amount: float, to: str):
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assert amount > 0, 'Cannot send negative balances!'
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total = __total_supply.get()
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ratio = currency.balance_of(ctx.this) / total
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amount2 = amount / ratio
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sender = ctx.caller
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assert __balances[sender] >= amount2, 'Not enough coins to send!'
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__balances[sender] -= amount2
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__tau_ratio.set(ratio)
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__total_supply.set(total - amount2)
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currency.transfer(amount, to)
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@__export('currency_2')
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def redeem(amount: float):
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legacy_transfer(amount, ctx.caller)
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@__export('currency_2')
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def mint(amount_in_tau: float):
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assert amount_in_tau > 0, 'Cannot mint negative balances!'
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sender = ctx.caller
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ratio = currency.balance_of(ctx.this) / __total_supply.get()
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__tau_ratio.set(ratio)
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currency.transfer_from(amount_in_tau, ctx.this, ctx.caller)
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amount = amount_in_tau / ratio
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__balances[sender] += amount
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__total_supply.set(__total_supply.get() + amount)
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@__export('currency_2')
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def set_cashback_amount(amount: float):
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assert amount < 1, 'Too much!'
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assert ctx.caller == __operator.get()
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__tau_refund_amount.set(amount)
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