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BTCAmt: add 'from_unit' to constructor. ETHAmt: add denominations

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The MMGen Project 2018-05-30 08:46:25 +00:00
commit 422c37f4f6
Signed by: mmgen
GPG key ID: 3F8B1861E32B7DA2
1 changed files with 29 additions and 25 deletions
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54
mmgen/obj.py
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@ -308,16 +308,25 @@ class BTCAmt(Decimal,Hilite,InitErrors):
color = 'yellow'
max_prec = 8
max_amt = 21000000
min_coin_unit = Decimal('0.00000001') # satoshi
satoshi = Decimal('0.00000001')
min_coin_unit = satoshi
amt_fs = '4.8'
units = ('satoshi',)
forbidden_types = (float,long)
def __new__(cls,num,on_fail='die'):
def __new__(cls,num,from_unit=None,on_fail='die'):
if type(num) == cls: return num
cls.arg_chk(cls,on_fail)
try:
assert type(num) is not float,'number is floating-point'
assert type(num) is not long,'number is a long integer'
me = Decimal.__new__(cls,str(num))
if from_unit:
assert from_unit in cls.units,(
"'{}': unrecognized denomination for {}".format(from_unit,cls.__name__))
assert type(num) in (int,long),'value is not an integer or long integer'
me = Decimal.__new__(cls,num * getattr(cls,from_unit))
else:
for t in cls.forbidden_types:
assert type(num) is not t,"number is of forbidden type '{}'".format(t.__name__)
me = Decimal.__new__(cls,str(num))
assert me.normalize().as_tuple()[-1] >= -cls.max_prec,'too many decimal places in coin amount'
assert me <= cls.max_amt,'coin amount too large (>{})'.format(cls.max_amt)
assert me >= 0,'coin amount cannot be negative'
@ -326,6 +335,8 @@ class BTCAmt(Decimal,Hilite,InitErrors):
m = "{!r}: value cannot be converted to {} ({})"
return cls.init_fail(m.format(num,cls.__name__,e[0]),on_fail)
def toSatoshi(self): return int(Decimal(self) / self.satoshi)
@classmethod
def fmtc(cls):
raise NotImplementedError
@ -380,29 +391,22 @@ class LTCAmt(BTCAmt): max_amt = 84000000
class ETHAmt(BTCAmt):
max_prec = 18
max_amt = 999999999 # TODO
wei = Decimal('0.000000000000000001')
szabo = Decimal('0.000000000001')
wei = Decimal('0.000000000000000001')
Kwei = Decimal('0.000000000000001')
Mwei = Decimal('0.000000000001')
Gwei = Decimal('0.000000001')
szabo = Decimal('0.000001')
finney = Decimal('0.001')
min_coin_unit = wei
units = ('wei','Kwei','Mwei','Gwei','szabo','finney')
amt_fs = '4.18'
def __new__(cls,num,from_unit=None,on_fail='die'):
if type(num) == cls: return num
cls.arg_chk(cls,on_fail)
try:
if from_unit:
assert from_unit in ('wei','szabo'),"'{}': unrecognized ETH denomination".format(from_unit)
assert type(num) in (int,long),'value is not an integer or long integer'
return super(cls,cls).__new__(cls,num * getattr(cls,from_unit),on_fail=on_fail)
return super(cls,cls).__new__(cls,num,on_fail=on_fail)
except Exception as e:
m = "{!r}: value cannot be converted to {} ({})"
return cls.init_fail(m.format(num,cls.__name__,e[0]),on_fail)
def toWei(self):
return int(Decimal(self) / self.wei)
def toSzabo(self):
return int(Decimal(self) / self.szabo)
def toWei(self): return int(Decimal(self) / self.wei)
def toKwei(self): return int(Decimal(self) / self.Kwei)
def toMwei(self): return int(Decimal(self) / self.Mwei)
def toGwei(self): return int(Decimal(self) / self.Gwei)
def toSzabo(self): return int(Decimal(self) / self.szabo)
def toFinney(self): return int(Decimal(self) / self.finney)
class CoinAddr(str,Hilite,InitErrors,MMGenObject):
color = 'cyan'