def copy_ir(ir, *instances):
"""
Args:
ir (Operation)
local_variables_instances(dict(str -> LocalVariable))
state_variables_instances(dict(str -> StateVariable))
temporary_variables_instances(dict(int -> Variable))
reference_variables_instances(dict(int -> Variable))
Note: temporary and reference can be indexed by int, as they dont need phi functions
"""
if isinstance(ir, Assignment):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
rvalue = get_variable(ir, lambda x: x.rvalue, *instances)
variable_return_type = ir.variable_return_type
return Assignment(lvalue, rvalue, variable_return_type)
if isinstance(ir, Balance):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
value = get_variable(ir, lambda x: x.value, *instances)
return Balance(value, lvalue)
if isinstance(ir, Binary):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
variable_left = get_variable(ir, lambda x: x.variable_left, *instances)
variable_right = get_variable(ir, lambda x: x.variable_right, *instances)
operation_type = ir.type
return Binary(lvalue, variable_left, variable_right, operation_type)
if isinstance(ir, CodeSize):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
value = get_variable(ir, lambda x: x.value, *instances)
return CodeSize(value, lvalue)
if isinstance(ir, Condition):
val = get_variable(ir, lambda x: x.value, *instances)
return Condition(val)
if isinstance(ir, Delete):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
variable = get_variable(ir, lambda x: x.variable, *instances)
return Delete(lvalue, variable)
if isinstance(ir, EventCall):
name = ir.name
return EventCall(name)
if isinstance(ir, HighLevelCall): # include LibraryCall
destination = get_variable(ir, lambda x: x.destination, *instances)
function_name = ir.function_name
nbr_arguments = ir.nbr_arguments
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
type_call = ir.type_call
if isinstance(ir, LibraryCall):
new_ir = LibraryCall(destination, function_name, nbr_arguments, lvalue, type_call)
else:
new_ir = HighLevelCall(destination, function_name, nbr_arguments, lvalue, type_call)
new_ir.call_id = ir.call_id
new_ir.call_value = get_variable(ir, lambda x: x.call_value, *instances)
new_ir.call_gas = get_variable(ir, lambda x: x.call_gas, *instances)
new_ir.arguments = get_arguments(ir, *instances)
new_ir.function = ir.function
return new_ir
if isinstance(ir, Index):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
variable_left = get_variable(ir, lambda x: x.variable_left, *instances)
variable_right = get_variable(ir, lambda x: x.variable_right, *instances)
index_type = ir.index_type
return Index(lvalue, variable_left, variable_right, index_type)
if isinstance(ir, InitArray):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
init_values = get_rec_values(ir, lambda x: x.init_values, *instances)
return InitArray(init_values, lvalue)
if isinstance(ir, InternalCall):
function = ir.function
nbr_arguments = ir.nbr_arguments
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
type_call = ir.type_call
new_ir = InternalCall(function, nbr_arguments, lvalue, type_call)
new_ir.arguments = get_arguments(ir, *instances)
return new_ir
if isinstance(ir, InternalDynamicCall):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
function = get_variable(ir, lambda x: x.function, *instances)
function_type = ir.function_type
new_ir = InternalDynamicCall(lvalue, function, function_type)
new_ir.arguments = get_arguments(ir, *instances)
return new_ir
if isinstance(ir, LowLevelCall):
destination = get_variable(ir, lambda x: x.destination, *instances)
function_name = ir.function_name
nbr_arguments = ir.nbr_arguments
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
type_call = ir.type_call
new_ir = LowLevelCall(destination, function_name, nbr_arguments, lvalue, type_call)
new_ir.call_id = ir.call_id
new_ir.call_value = get_variable(ir, lambda x: x.call_value, *instances)
new_ir.call_gas = get_variable(ir, lambda x: x.call_gas, *instances)
new_ir.arguments = get_arguments(ir, *instances)
return new_ir
if isinstance(ir, Member):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
variable_left = get_variable(ir, lambda x: x.variable_left, *instances)
variable_right = get_variable(ir, lambda x: x.variable_right, *instances)
return Member(variable_left, variable_right, lvalue)
if isinstance(ir, NewArray):
depth = ir.depth
array_type = ir.array_type
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
new_ir = NewArray(depth, array_type, lvalue)
new_ir.arguments = get_rec_values(ir, lambda x: x.arguments, *instances)
return new_ir
if isinstance(ir, NewElementaryType):
new_type = ir.type
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
new_ir = NewElementaryType(new_type, lvalue)
new_ir.arguments = get_arguments(ir, *instances)
return new_ir
if isinstance(ir, NewContract):
contract_name = ir.contract_name
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
new_ir = NewContract(contract_name, lvalue)
new_ir.arguments = get_arguments(ir, *instances)
new_ir.call_value = get_variable(ir, lambda x: x.call_value, *instances)
new_ir.call_salt = get_variable(ir, lambda x: x.call_salt, *instances)
return new_ir
if isinstance(ir, NewStructure):
structure = ir.structure
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
new_ir = NewStructure(structure, lvalue)
new_ir.arguments = get_arguments(ir, *instances)
return new_ir
if isinstance(ir, Nop):
return Nop()
if isinstance(ir, Push):
array = get_variable(ir, lambda x: x.array, *instances)
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
return Push(array, lvalue)
if isinstance(ir, Return):
values = get_rec_values(ir, lambda x: x.values, *instances)
return Return(values)
if isinstance(ir, Send):
destination = get_variable(ir, lambda x: x.destination, *instances)
value = get_variable(ir, lambda x: x.call_value, *instances)
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
return Send(destination, value, lvalue)
if isinstance(ir, SolidityCall):
function = ir.function
nbr_arguments = ir.nbr_arguments
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
type_call = ir.type_call
new_ir = SolidityCall(function, nbr_arguments, lvalue, type_call)
new_ir.arguments = get_arguments(ir, *instances)
return new_ir
if isinstance(ir, Transfer):
destination = get_variable(ir, lambda x: x.destination, *instances)
value = get_variable(ir, lambda x: x.call_value, *instances)
return Transfer(destination, value)
if isinstance(ir, TypeConversion):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
variable = get_variable(ir, lambda x: x.variable, *instances)
variable_type = ir.type
return TypeConversion(lvalue, variable, variable_type)
if isinstance(ir, Unary):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
rvalue = get_variable(ir, lambda x: x.rvalue, *instances)
operation_type = ir.type
return Unary(lvalue, rvalue, operation_type)
if isinstance(ir, Unpack):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
tuple_var = get_variable(ir, lambda x: x.tuple, *instances)
idx = ir.index
return Unpack(lvalue, tuple_var, idx)
if isinstance(ir, Length):
lvalue = get_variable(ir, lambda x: x.lvalue, *instances)
value = get_variable(ir, lambda x: x.value, *instances)
return Length(value, lvalue)
raise SlithIRError("Impossible ir copy on {} ({})".format(ir, type(ir)))
def extract_tmp_call(ins, contract):
assert isinstance(ins, TmpCall)
if isinstance(ins.called, Variable) and isinstance(ins.called.type, FunctionType):
call = InternalDynamicCall(ins.lvalue, ins.called, ins.called.type)
call.set_expression(ins.expression)
call.call_id = ins.call_id
return call
if isinstance(ins.ori, Member):
# If there is a call on an inherited contract, it is an internal call or an event
if ins.ori.variable_left in contract.inheritance + [contract]:
if str(ins.ori.variable_right) in [f.name for f in contract.functions]:
internalcall = InternalCall((ins.ori.variable_right, ins.ori.variable_left.name), ins.nbr_arguments,
ins.lvalue, ins.type_call)
internalcall.set_expression(ins.expression)
internalcall.call_id = ins.call_id
return internalcall
if str(ins.ori.variable_right) in [f.name for f in contract.events]:
eventcall = EventCall(ins.ori.variable_right)
eventcall.set_expression(ins.expression)
eventcall.call_id = ins.call_id
return eventcall
if isinstance(ins.ori.variable_left, Contract):
st = ins.ori.variable_left.get_structure_from_name(ins.ori.variable_right)
if st:
op = NewStructure(st, ins.lvalue)
op.set_expression(ins.expression)
op.call_id = ins.call_id
return op
libcall = LibraryCall(ins.ori.variable_left, ins.ori.variable_right, ins.nbr_arguments, ins.lvalue,
ins.type_call)
libcall.set_expression(ins.expression)
libcall.call_id = ins.call_id
return libcall
msgcall = HighLevelCall(ins.ori.variable_left, ins.ori.variable_right, ins.nbr_arguments, ins.lvalue,
ins.type_call)
msgcall.call_id = ins.call_id
if ins.call_gas:
msgcall.call_gas = ins.call_gas
if ins.call_value:
msgcall.call_value = ins.call_value
msgcall.set_expression(ins.expression)
return msgcall
if isinstance(ins.ori, TmpCall):
r = extract_tmp_call(ins.ori, contract)
r.set_node(ins.node)
return r
if isinstance(ins.called, SolidityVariableComposed):
if str(ins.called) == 'block.blockhash':
ins.called = SolidityFunction('blockhash(uint256)')
elif str(ins.called) == 'this.balance':
s = SolidityCall(SolidityFunction('this.balance()'), ins.nbr_arguments, ins.lvalue, ins.type_call)
s.set_expression(ins.expression)
return s
if isinstance(ins.called, SolidityFunction):
s = SolidityCall(ins.called, ins.nbr_arguments, ins.lvalue, ins.type_call)
s.set_expression(ins.expression)
return s
if isinstance(ins.ori, TmpNewElementaryType):
n = NewElementaryType(ins.ori.type, ins.lvalue)
n.set_expression(ins.expression)
return n
if isinstance(ins.ori, TmpNewContract):
op = NewContract(Constant(ins.ori.contract_name), ins.lvalue)
op.set_expression(ins.expression)
op.call_id = ins.call_id
return op
if isinstance(ins.ori, TmpNewArray):
n = NewArray(ins.ori.depth, ins.ori.array_type, ins.lvalue)
n.set_expression(ins.expression)
return n
if isinstance(ins.called, Structure):
op = NewStructure(ins.called, ins.lvalue)
op.set_expression(ins.expression)
op.call_id = ins.call_id
op.set_expression(ins.expression)
return op
if isinstance(ins.called, Event):
e = EventCall(ins.called.name)
e.set_expression(ins.expression)
return e
if isinstance(ins.called, Contract):
# Called a base constructor, where there is no constructor
if ins.called.constructor is None:
return Nop()
# Case where:
# contract A{ constructor(uint) }
# contract B is A {}
# contract C is B{ constructor() A(10) B() {}
# C calls B(), which does not exist
# Ideally we should compare here for the parameters types too
if len(ins.called.constructor.parameters) != ins.nbr_arguments:
return Nop()
internalcall = InternalCall(ins.called.constructor, ins.nbr_arguments, ins.lvalue,
ins.type_call)
internalcall.call_id = ins.call_id
internalcall.set_expression(ins.expression)
return internalcall
raise Exception('Not extracted {} {}'.format(type(ins.called), ins))
def extract_tmp_call(ins, contract):
assert isinstance(ins, TmpCall)
if isinstance(ins.called, Variable) and isinstance(ins.called.type, FunctionType):
call = InternalDynamicCall(ins.lvalue, ins.called, ins.called.type)
call.call_id = ins.call_id
return call
if isinstance(ins.ori, Member):
# If there is a call on an inherited contract, it is an internal call or an event
if ins.ori.variable_left in contract.inheritance + [contract]:
if str(ins.ori.variable_right) in [f.name for f in contract.functions]:
internalcall = InternalCall((ins.ori.variable_right, ins.ori.variable_left.name), ins.nbr_arguments, ins.lvalue, ins.type_call)
internalcall.call_id = ins.call_id
return internalcall
if str(ins.ori.variable_right) in [f.name for f in contract.events]:
eventcall = EventCall(ins.ori.variable_right)
eventcall.call_id = ins.call_id
return eventcall
if isinstance(ins.ori.variable_left, Contract):
st = ins.ori.variable_left.get_structure_from_name(ins.ori.variable_right)
if st:
op = NewStructure(st, ins.lvalue)
op.call_id = ins.call_id
return op
libcall = LibraryCall(ins.ori.variable_left, ins.ori.variable_right, ins.nbr_arguments, ins.lvalue, ins.type_call)
libcall.call_id = ins.call_id
return libcall
msgcall = HighLevelCall(ins.ori.variable_left, ins.ori.variable_right, ins.nbr_arguments, ins.lvalue, ins.type_call)
msgcall.call_id = ins.call_id
return msgcall
if isinstance(ins.ori, TmpCall):
r = extract_tmp_call(ins.ori, contract)
return r
if isinstance(ins.called, SolidityVariableComposed):
if str(ins.called) == 'block.blockhash':
ins.called = SolidityFunction('blockhash(uint256)')
elif str(ins.called) == 'this.balance':
return SolidityCall(SolidityFunction('this.balance()'), ins.nbr_arguments, ins.lvalue, ins.type_call)
if isinstance(ins.called, SolidityFunction):
return SolidityCall(ins.called, ins.nbr_arguments, ins.lvalue, ins.type_call)
if isinstance(ins.ori, TmpNewElementaryType):
return NewElementaryType(ins.ori.type, ins.lvalue)
if isinstance(ins.ori, TmpNewContract):
op = NewContract(Constant(ins.ori.contract_name), ins.lvalue)
op.call_id = ins.call_id
return op
if isinstance(ins.ori, TmpNewArray):
return NewArray(ins.ori.depth, ins.ori.array_type, ins.lvalue)
if isinstance(ins.called, Structure):
op = NewStructure(ins.called, ins.lvalue)
op.call_id = ins.call_id
return op
if isinstance(ins.called, Event):
return EventCall(ins.called.name)
if isinstance(ins.called, Contract):
# Called a base constructor, where there is no constructor
if ins.called.constructor is None:
return Nop()
internalcall = InternalCall(ins.called.constructor, ins.nbr_arguments, ins.lvalue,
ins.type_call)
internalcall.call_id = ins.call_id
return internalcall
raise Exception('Not extracted {} {}'.format(type(ins.called), ins))