Contract con_mint
| Creator | 4a035ff604ffb0a44e5235e2fed8f69666b6df6ff11cbfa347d154d1a5453bba |
| Creation Hash | 63a99640f90447c7c5547e9e489c87771ae5107a3848327243bb9dc7a45d7c33 |
| Created On | 1308 days ago - 9/25/2020, 1:01:20 PM UTC+0 |
Contract Code
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tokenName = 'mintedTAU'
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import currency
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__S = Hash(default_value=0, contract='con_mint', name='S')
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__approved = Hash(default_value=0, contract='con_mint', name='approved')
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__liquidityTokenBalance = Hash(default_value=0, contract='con_mint', name=
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'liquidityTokenBalance')
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__lastBlockMined = Hash(default_value=0, contract='con_mint', name=
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'lastBlockMined')
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totalMined = block_num
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totalLiquidityTokens = 100
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@__export('con_mint')
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def mine():
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assert block_num > __lastBlockMined + 100
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miner = ctx.caller
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amount = (block_num - totalMined) / 100
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totalMined += amount
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__S[miner] += amount
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@__export('con_mint')
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def approve(amount: float, to: str):
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assert amount > 0, 'Cannot approve negative balance'
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sender = ctx.caller
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__approved[sender, to] += amount
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@__export('con_mint')
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def transfer_from(amount: float, to: str, fromAddress: str):
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assert amount > 0, 'Cannot send negative balance'
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sender = ctx.caller
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assert __approved[fromAddress, sender
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] >= amount, 'Transfer amount exceeds approved balance'
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assert __S[fromAddress
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] >= amount, 'Transfer amount exceeds available balance'
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__approved[fromAddress, sender] -= amount
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__S[fromAddress] -= amount
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__S[to] += amount
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@__export('con_mint')
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def transfer(amount: int, receiver: str):
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assert amount > 0, 'Cannot send negative balance'
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sender = ctx.caller
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balance = __S[sender]
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assert balance >= amount, 'Transfer amount exceeds available balance'
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__S[sender] -= amount
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__S[receiver] += amount
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@__export('con_mint')
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def tradeTAUForToken(amount: int, fromAddress: str):
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assert amount > 0, 'Cannot send negative balance'
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currency.transfer_from(amount, ctx.this, fromAddress)
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inputReserve = currency.balance_of(ctx.this)
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outputReserve = __S[ctx.this]
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assert input_reserve > 0 and output_reserve > 0
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numerator = amount * outputReserve
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denominator = inputReserve * 1000 + amount
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amount = numerator / denominator
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__S[ctx.this] -= amount
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__S[fromAddress] += amount
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@__export('con_mint')
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def tradeTokenForTAU(amount: int, fromAddress: str):
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assert amount > 0, 'Cannot send negative balance'
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assert __S[fromAddress] >= amount
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inputReserve = __S[ctx.this]
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outputReserve = currency.balance_of(ctx.this)
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assert input_reserve > 0 and output_reserve > 0
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numerator = amount * outputReserve
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denominator = inputReserve * 1000 + amount
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amount = numerator / denominator
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__S[fromAddress] -= amount
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__S[ctx.this] += amount
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currency.transfer(amount, fromAddress)
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@__export('con_mint')
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def addLiquidity(amountInTAU: int):
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assert amountInTAU > 0, 'Cannot add negative liquidity'
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assert __S[ctx.caller] >= amountInTau * __S[ctx.this
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] / currency.balance_of(ctx.this)
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tokenReserve = __S[ctx.this]
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TAUReserve = currency.balance_of(ctx.this)
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currency.transfer_from(amountInTau, ctx.this, ctx.caller)
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__S[ctx.caller] -= amountInTau * __S[ctx.this] / currency.balance_of(ctx
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.this)
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assert __S[ctx.caller] >= 0
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tokenWorthInTAU = TAUReserve / totalLiquidityTokens
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tokenAmount = amountInTAU / tokenWorthInTAU
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__liquidityTokenBalance[ctx.caller] += tokenAmount
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totalLiquidityTokens += tokenAmount
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return tokenAmount
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@__export('con_mint')
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def removeLiquidity(amount: int):
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assert amountInTAU > 0, 'Cannot add negative liquidity'
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assert totalLiquidityTokens > 0
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assert __liquidityTokenBalance > 0
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__liquidityTokenBalance[ctx.caller] -= amount
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totalLiquidityTokens -= amount
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send(msg.sender, eth_amount)
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percentOfPool = amount / totalLiquidityTokens
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tokenPayout = __S[ctx.this] * percentOfPool
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TAUPayout = currency.balance_of(ctx.this) * percentOfPool
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currency.transfer(TAUPayout, ctx.caller)
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__S[ctx.this] -= tokenPayout
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__S[ctx.caller] += tokenPayout
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return TAUPayout, tokenPayout
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@__export('con_mint')
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def transferLiquidityToken(amount: int, receiver: str):
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assert amount > 0, 'Cannot send negative balance'
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sender = ctx.caller
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balance = __liquidityTokenBalance[sender]
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assert balance >= amount, 'Transfer amount exceeds available balance'
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__liquidityTokenBalance[sender] -= amount
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__liquidityTokenBalance[receiver] += amount
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@__export('con_mint')
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def allowance(owner: str, spender: str):
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return __approved[owner, spender]
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@__export('con_mint')
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def liquidityRatio():
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tokenReserve = __S[ctx.this]
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TAUReserve = currency.balance_of(ctx.this)
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return TAUReserve / tokenReserve
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Byte Code
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