def as_wei_value(expr, args, kwargs, context):
# Denominations
if args[1] == b"wei":
denomination = 1
elif args[1] in (b"kwei", b"ada", b"lovelace"):
denomination = 10**3
elif args[1] == b"babbage":
denomination = 10**6
elif args[1] in (b"shannon", b"gwei"):
denomination = 10**9
elif args[1] == b"szabo":
denomination = 10**12
elif args[1] == b"finney":
denomination = 10**15
elif args[1] == b"ether":
denomination = 10**18
else:
raise InvalidLiteralException("Invalid denomination: %s" % args[1],
expr.args[1])
# Compute the amount of wei and return that value
if isinstance(args[0], (int, float)):
numstring, num, den = get_number_as_fraction(expr.args[0], context)
if denomination % den:
raise InvalidLiteralException(
"Too many decimal places: %s" % numstring, expr.args[0])
sub = num * denomination // den
elif args[0].typ.typ == 'num':
sub = ['mul', args[0], denomination]
else:
sub = ['div', ['mul', args[0], denomination], DECIMAL_DIVISOR]
return LLLnode.from_list(sub,
typ=BaseType('num', {'wei': 1}),
location=None,
pos=getpos(expr))
def as_wei_value(expr, args, kwargs, context):
# Denominations
names_denom = {
(b"wei", ): 1,
(b"femtoether", b"kwei", b"babbage"): 10**3,
(b"picoether", b"mwei", b"lovelace"): 10**6,
(b"nanoether", b"gwei", b"shannon"): 10**9,
(b"microether", b"szabo", ): 10**12,
(b"milliether", b"finney", ): 10**15,
(b"ether", ): 10**18,
(b"kether", b"grand"): 10**21,
}
for names, denom in names_denom.items():
if args[1] in names:
denomination = denom
break
else:
raise InvalidLiteralException("Invalid denomination: %s" % args[1], expr.args[1])
# Compute the amount of wei and return that value
if isinstance(args[0], (int, float)):
numstring, num, den = get_number_as_fraction(expr.args[0], context)
if denomination % den:
raise InvalidLiteralException("Too many decimal places: %s" % numstring, expr.args[0])
sub = num * denomination // den
elif args[0].typ.is_literal:
if args[0].value <= 0:
raise InvalidLiteralException("Negative wei value not allowed", expr)
sub = ['mul', args[0].value, denomination]
elif args[0].typ.typ == 'uint256':
sub = ['mul', args[0], denomination]
else:
sub = ['div', ['mul', args[0], denomination], DECIMAL_DIVISOR]
return LLLnode.from_list(sub, typ=BaseType('uint256', {'wei': 1}), location=None, pos=getpos(expr))
def as_wei_value(expr, args, kwargs, context):
# Denominations
wei_denominations = {
("wei", ): 1,
("femtoether", "kwei", "babbage"): 10**3,
("picoether", "mwei", "lovelace"): 10**6,
("nanoether", "gwei", "shannon"): 10**9,
(
"microether",
"szabo",
): 10**12,
(
"milliether",
"finney",
): 10**15,
("ether", ): 10**18,
("kether", "grand"): 10**21,
}
value, denom_name = args[0], args[1].decode()
denom_divisor = next(
(v for k, v in wei_denominations.items() if denom_name in k), False)
if not denom_divisor:
raise InvalidLiteralException(
f"Invalid denomination: {denom_name}, valid denominations are: "
f"{','.join(x[0] for x in wei_denominations)}", expr.args[1])
# Compute the amount of wei and return that value
if isinstance(value, (int, float)):
expr_args_0 = expr.args[0]
# On constant reference fetch value node of constant assignment.
if context.constants.ast_is_constant(expr.args[0]):
expr_args_0 = context.constants._constants_ast[expr.args[0].id]
numstring, num, den = get_number_as_fraction(expr_args_0, context)
if denom_divisor % den:
max_len = len(str(denom_divisor)) - 1
raise InvalidLiteralException(
f"Wei value of denomination '{denom_name}' has maximum {max_len} decimal places",
expr.args[0])
sub = num * denom_divisor // den
elif value.typ.is_literal:
if value.value <= 0:
raise InvalidLiteralException("Negative wei value not allowed",
expr)
sub = ['mul', value.value, denom_divisor]
elif value.typ.typ == 'uint256':
sub = ['mul', value, denom_divisor]
else:
sub = ['div', ['mul', value, denom_divisor], DECIMAL_DIVISOR]
return LLLnode.from_list(
sub,
typ=BaseType('uint256', {'wei': 1}),
location=None,
pos=getpos(expr),
)
def parse_Decimal(self):
numstring, num, den = get_number_as_fraction(self.expr, self.context)
if not (SizeLimits.MINNUM * den <= num <= SizeLimits.MAXNUM * den):
return
if DECIMAL_DIVISOR % den:
return
return LLLnode.from_list(
num * DECIMAL_DIVISOR // den,
typ=BaseType("decimal", is_literal=True),
pos=getpos(self.expr),
)
def number(self):
orignum = get_original_if_0_prefixed(self.expr, self.context)
if orignum is None and isinstance(self.expr.n, int):
# Literal (mostly likely) becomes int128
if SizeLimits.in_bounds('int128', self.expr.n) or self.expr.n < 0:
return LLLnode.from_list(self.expr.n, typ=BaseType('int128', unit=None, is_literal=True), pos=getpos(self.expr))
# Literal is large enough (mostly likely) becomes uint256.
else:
return LLLnode.from_list(self.expr.n, typ=BaseType('uint256', unit=None, is_literal=True), pos=getpos(self.expr))
elif isinstance(self.expr.n, float):
numstring, num, den = get_number_as_fraction(self.expr, self.context)
# if not SizeLimits.in_bounds('decimal', num // den):
# if not SizeLimits.MINDECIMAL * den <= num <= SizeLimits.MAXDECIMAL * den:
if not (SizeLimits.MINNUM * den < num < SizeLimits.MAXNUM * den):
raise InvalidLiteralException("Number out of range: " + numstring, self.expr)
if DECIMAL_DIVISOR % den:
raise InvalidLiteralException("Too many decimal places: " + numstring, self.expr)
return LLLnode.from_list(num * DECIMAL_DIVISOR // den, typ=BaseType('decimal', unit=None), pos=getpos(self.expr))
# Binary literal.
elif orignum[:2] == '0b':
str_val = orignum[2:]
total_bits = len(orignum[2:])
total_bits = total_bits if total_bits % 8 == 0 else total_bits + 8 - (total_bits % 8) # ceil8 to get byte length.
if len(orignum[2:]) != total_bits: # Support only full formed bit definitions.
raise InvalidLiteralException("Bit notation requires a multiple of 8 bits / 1 byte. {} bit(s) are missing.".format(total_bits - len(orignum[2:])), self.expr)
byte_len = int(total_bits / 8)
placeholder = self.context.new_placeholder(ByteArrayType(byte_len))
seq = []
seq.append(['mstore', placeholder, byte_len])
for i in range(0, total_bits, 256):
section = str_val[i:i + 256]
int_val = int(section, 2) << (256 - len(section)) # bytes are right padded.
seq.append(
['mstore', ['add', placeholder, i + 32], int_val])
return LLLnode.from_list(['seq'] + seq + [placeholder],
typ=ByteArrayType(byte_len), location='memory', pos=getpos(self.expr), annotation='Create ByteArray (Binary literal): %s' % str_val)
elif len(orignum) == 42:
if checksum_encode(orignum) != orignum:
raise InvalidLiteralException("Address checksum mismatch. If you are sure this is the "
"right address, the correct checksummed form is: " +
checksum_encode(orignum), self.expr)
return LLLnode.from_list(self.expr.n, typ=BaseType('address', is_literal=True), pos=getpos(self.expr))
elif len(orignum) == 66:
return LLLnode.from_list(self.expr.n, typ=BaseType('bytes32', is_literal=True), pos=getpos(self.expr))
else:
raise InvalidLiteralException("Cannot read 0x value with length %d. Expecting 42 (address incl 0x) or 66 (bytes32 incl 0x)"
% len(orignum), self.expr)
def decimal(self):
numstring, num, den = get_number_as_fraction(self.expr, self.context)
# if not SizeLimits.in_bounds('decimal', num // den):
# if not SizeLimits.MINDECIMAL * den <= num <= SizeLimits.MAXDECIMAL * den:
if not (SizeLimits.MINNUM * den <= num <= SizeLimits.MAXNUM * den):
raise InvalidLiteral("Number out of range: " + numstring,
self.expr)
if DECIMAL_DIVISOR % den:
raise InvalidLiteral(
"Type 'decimal' has maximum 10 decimal places", self.expr)
return LLLnode.from_list(
num * DECIMAL_DIVISOR // den,
typ=BaseType('decimal', is_literal=True),
pos=getpos(self.expr),
)
def as_wei_value(expr, args, kwargs, context):
# Denominations
names_denom = {
(b"wei", ): 1,
(b"femtoether", b"kwei", b"babbage"): 10**3,
(b"picoether", b"mwei", b"lovelace"): 10**6,
(b"nanoether", b"gwei", b"shannon"): 10**9,
(b"microether", b"szabo", ): 10**12,
(b"milliether", b"finney", ): 10**15,
(b"ether", ): 10**18,
(b"kether", b"grand"): 10**21,
}
for names, denom in names_denom.items():
if args[1] in names:
denomination = denom
break
else:
raise InvalidLiteralException(
f"Invalid denomination: {args[1]}, valid denominations are: "
f"{','.join(x[0].decode() for x in names_denom)}",
expr.args[1]
)
# Compute the amount of wei and return that value
if isinstance(args[0], (int, float)):
expr_args_0 = expr.args[0]
# On constant reference fetch value node of constant assignment.
if context.constants.ast_is_constant(expr.args[0]):
expr_args_0 = context.constants._constants_ast[expr.args[0].id]
numstring, num, den = get_number_as_fraction(expr_args_0, context)
if denomination % den:
raise InvalidLiteralException(f"Too many decimal places: {numstring}", expr.args[0])
sub = num * denomination // den
elif args[0].typ.is_literal:
if args[0].value <= 0:
raise InvalidLiteralException("Negative wei value not allowed", expr)
sub = ['mul', args[0].value, denomination]
elif args[0].typ.typ == 'uint256':
sub = ['mul', args[0], denomination]
else:
sub = ['div', ['mul', args[0], denomination], DECIMAL_DIVISOR]
return LLLnode.from_list(
sub,
typ=BaseType('uint256', {'wei': 1}),
location=None,
pos=getpos(expr),
)
def build_LLL(self, expr, args, kwargs, context):
value, denom_name = args[0], args[1].decode()
denom_divisor = next(
(v for k, v in self.wei_denoms.items() if denom_name in k), False)
if not denom_divisor:
raise InvalidLiteral(
f"Invalid denomination: {denom_name}, valid denominations are: "
f"{','.join(x[0] for x in self.wei_denoms)}", expr.args[1])
# Compute the amount of wei and return that value
if isinstance(value, (int, Decimal)):
expr_args_0 = expr.args[0]
# On constant reference fetch value node of constant assignment.
if context.constants.ast_is_constant(expr.args[0]):
expr_args_0 = context.constants._constants_ast[expr.args[0].id]
numstring, num, den = get_number_as_fraction(expr_args_0, context)
if denom_divisor % den:
max_len = len(str(denom_divisor)) - 1
raise InvalidLiteral(
f"Wei value of denomination '{denom_name}' has max {max_len} decimal places",
expr.args[0])
sub = num * denom_divisor // den
elif value.typ.is_literal:
if value.value <= 0:
raise InvalidLiteral("Negative wei value not allowed", expr)
sub = ['mul', value.value, denom_divisor]
elif value.typ.typ == 'uint256':
sub = ['mul', value, denom_divisor]
else:
sub = ['div', ['mul', value, denom_divisor], DECIMAL_DIVISOR]
return LLLnode.from_list(
sub,
typ=BaseType('uint256'),
location=None,
pos=getpos(expr),
)