Contract con_doom
| Creator | 4a035ff604ffb0a44e5235e2fed8f69666b6df6ff11cbfa347d154d1a5453bba |
| Creation Hash | a6da7c97860fef9a2c8f829da4266963cece15383734377e3377f133ffb4ee96 |
| Created On | 1302 days ago - 10/21/2020, 11:05:10 PM UTC+0 |
Contract Code
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import submission
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def ____():
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contract = """import currency
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#All transactions are pegged to TAU. If you send 1 TAU, and the conversion ratio is 1:1.1, the actual amount sent will be 0.91 sTAU.
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balances = Hash(default_value=0)
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tau_ratio = Variable()
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total_supply = Variable()
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tau_refund_amount = Variable()
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operator = Variable()
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@construct
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def seed():
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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
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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
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def balance_of(account: str):
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return balances[account] * tau_ratio.get()
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@export
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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
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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
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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] >= amount, 'Not enough coins approved to send! You have {} and are trying to spend {}' .format(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
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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
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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
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def redeem(amount: float):
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legacy_transfer(amount, ctx.caller)
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@export
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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
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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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"""
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submission.submit_contract('currency_2', contract)
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@__export('con_doom')
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def a():
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pass
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Byte Code
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