def generate_fcall_tail_call(self, opts):
if opts["numbers"]:
numbers = []
for i in range(4):
gen = self.rng.choice(opts["numbers"])
gen.set_rng(self.rng)
numbers.append(gen())
else:
numbers = ["1", "2", "3", "4"]
func = self.create_function(["acc", "rest"])
# generate an arith_integer function
gen = pgen.ArithIntegerGenerator(
self.module,
self.stats,
self.opts,
self.rng)
c = gen.generate(self.opts["arith_integer"], 2)
self.module.content.insert(0, c)
args = self.rng.sample(["acc", "rest"] + numbers, 2)
result = self.next_variable()
call = Assignment(result, '=', [CallStatement(c, args)])
func.content.append(call)
end = IfStatement("acc == 0",
["return %s" % (result,)],
[Assignment(
"result", "=", [CallStatement(func, ["acc - 1", result])]),
"return result"])
func.content.append(end)
return func
def generate_duck(self, literals):
"""Generate a duck typing callsite."""
c, m = self.make_class_function()
c_super, m_super = self.make_class_function()
m_super.name = m.name
self.make_fill(m)
self.make_fill(m_super)
class_var = self.next_variable()
clause = self.rng.choice(
list(
literals)) + " < " + self.rng.choice(
list(
literals))
i = IfStatement(clause,
[Assignment(class_var, '=', [CallStatement(c, [])])],
[Assignment(
class_var,
'=',
[CallStatement(c_super,
[])])]
)
result = [i]
l = self.make_loop(literals, class_var, m)
result.append(l)
return result
def generate_closure_tail_call(self, opts):
if opts["numbers"]:
numbers = []
for i in range(4):
gen = self.rng.choice(opts["numbers"])
gen.set_rng(self.rng)
numbers.append(gen())
else:
numbers = ["1", "2", "3", "4"]
func = self.create_function(["acc", "rest"])
exp = ArithGen(
5,
self.rng).generate(["closure[0]",
"acc",
"rest"] + numbers)
var = self.next_variable()
func.content.append(Assignment(var, '=', [exp]))
func.content.append(Assignment("closure[0]", '+=', [var]))
end = IfStatement("acc == 0",
["return %s" % (var,)],
[Assignment(
"result", "=", [CallStatement(func, ["acc - 1", var])]),
"return result"])
func.content.append(end)
return func
def generate(self, args_num, pliterals):
"""Returns a CallStatement."""
args = self.generate_arguments(args_num)
f = self.create_function(args)
self.module.content.insert(0, f)
literals = list(args) + [
n.set_rng(self.rng)
for n in [gen_max_int_gen(),
IntegerGen(-1000, 1000)]
]
if self.stats.prog_size > 0:
self.generate_child(f, literals)
for i in range(10):
result = self.next_variable()
exp = ArithGen(2, self.rng).generate(literals)
literals.append(result)
f.content.append(Assignment(result, '=', [exp]))
f.content.append("yield %s" % (result, ))
pargs = self.rng.sample(pliterals, args_num)
return CallStatement(f, pargs)
def generate_child(self, func, literals):
"""Insert a function call to calculate some numbers."""
gen = pgen.ArithIntegerGenerator(self.module, self.stats, self.opts,
self.rng)
c = gen.generate(self.opts["arith_integer"], 2)
self.module.content.insert(0, c)
args = self.rng.sample(literals, 2)
result = self.next_variable()
call = Assignment(result, '=', [CallStatement(c, args)])
func.content.append(call)
func.content.append("yield %s" % (result, ))
def generate(self, opts, args_num, globals=[]):
"""Insert a new arithmetic function using only integers."""
args = self.generate_arguments(args_num)
closure = self.create_function(args)
gen = self.create_function([])
if opts['numbers']:
number_gen = self.rng.choice(opts['numbers'])
number_gen.set_rng(self.rng)
number = number_gen()
else:
number = 0
gen.content.extend([
'closure = [%s]' % (number, ),
closure,
Assignment('func', '=', [closure.name]),
'return func',
])
c_var = self.next_variable()
self.module.content.insert(0, gen)
self.module.content.insert(
1, Assignment(c_var, '=', [CallStatement(gen, [])]))
gen_ai = ArithIntegerGenerator(self.module, self.stats, self.opts,
self.rng)
f = gen_ai.generate(self.opts['arith_integer'], args_num, [])
self.module.content.insert(0, f)
closure.content.append(
Assignment('closure[0]', '+=', [CallStatement(f, args)]))
closure.content.append('return closure[0]')
return c_var
def generate_monomorphic(self, literals):
"""Generates a monomorphic callsite."""
c, m = self.make_class_function()
self.make_fill(m)
result = []
class_var = self.next_variable()
result.append(Assignment(class_var, '=', [CallStatement(c, [])]))
l = self.make_loop(literals, class_var, m)
result.append(l)
return result
def generate(self, opts, args_num, globals):
fon = self.generate_globalon(opts)
foff = self.generate_globaloff(opts)
self.module.content.insert(0, fon)
self.module.content.insert(0, foff)
from . import iterables
iter_gen = iterables.IterableGenerator(
self.module,
self.stats,
self.opts,
self.rng)
if opts["numbers"]:
numbers = []
for i in range(4):
gen = self.rng.choice(opts["numbers"])
gen.set_rng(self.rng)
numbers.append(gen())
else:
numbers = ["1", "2", "3", "4"]
iter = iter_gen.get_iterable(numbers)
f = self.create_function([])
f.content.extend(
[
CallStatement(fon, []),
Assignment("result", '=', [CallStatement("len", iter)]),
CallStatement(foff, []),
"return result"
]
)
return f
def generate(self):
"""Instantiates a new module and fills it randomly."""
self.module = Module(main=True)
self.func_number = 1
self.arg_number = 1
lopts = self.opts["module"]
self.prog_size = lopts["prog_size"]
self.module_size = lopts["module_size"] - self.prog_size
while self.module_size > 0 or self.prog_size > 0:
main = []
loop = ForLoop('i', ['range(%d)' % (lopts["mainloop"], )], main)
if "children" in lopts:
branch = eval_branches(self.rng, lopts["children"])
if branch == "arith_integer":
main.append(Assignment('x', '=', ['5']))
f = self.arith_integer(self.opts[branch], 2)
main.append(
Assignment('x', '=', [CallStatement(f, ['x', 'i'])]))
main.append("print(x, end='')")
self.module.content.insert(0, f)
if branch == "arith_float":
main.append(Assignment('x', '=', ['5.0']))
main.append("print(x, end='')")
self.module.main_body.append(
"print('prog_size: %d')" %
(lopts["prog_size"] - self.prog_size, ))
self.module.main_body.append("print('func_number: %d')" %
(self.func_number, ))
self.module.main_body.append("print('arg_number: %d')" %
(self.arg_number, ))
self.module.main_body.append(loop)
created_size = lopts["prog_size"] - self.prog_size
refill = min(created_size, self.module_size)
self.module_size -= refill
self.prog_size += refill
self.module.content.insert(0, 'from __future__ import print_function')
return self.module
def make_loop(self, literals, class_var, m):
loop_var = self.next_variable()
iter = self.get_iterable(literals)
l = ForLoop(loop_var, iter)
loop_literals = list(literals) + [loop_var]
args = [self.rng.choice(loop_literals) for i in m.args]
if self.rng.random() < 0.5:
func = class_var + '.' + m.name
else: # Sometimes copy the function into a variable
func = self.next_variable()
l.content.append(Assignment(func, '=', [class_var + '.' + m.name]))
l.content.append(CallStatement(func, args))
return l
def generate(self, opts, args_num, globals):
args = self.generate_arguments(args_num)
func = self.create_function(args)
branch = eval_branches(self.rng, opts["type"])
if branch == "standard":
rec = self.generate_standard_tail_call(opts)
elif branch == "closure":
func.content.append(Assignment("closure", "=", ["[0]"]))
rec = self.generate_closure_tail_call(opts)
else:
rec = self.generate_fcall_tail_call(opts)
func.content.append(rec)
func.content.extend(
[Assignment("result", "=", [CallStatement(rec, ["10", "0"])]),
"return result"])
self.module.content.append(func)
return func
def generate_child(self, opts, f, literals):
branch = eval_branches(self.rng, opts['children'])
if branch == 'arith_integer':
gen = ArithIntegerGenerator(self.module, self.stats, self.opts,
self.rng)
c = gen.generate(opts, 2)
self.module.content.insert(0, c)
args = self.rng.sample(list(literals), 2)
result = self.next_variable()
call = Assignment(result, '=', [CallStatement(c, args)])
f.content.append(call)
literals.add(result)
if branch == ('arith_integer', 'local'):
gen = ArithIntegerGenerator(self.module, self.stats, self.opts,
self.rng)
c = gen.generate(opts, 2, list(literals))
f.content.append(c)
args = self.rng.sample(list(literals), 2)
result = self.next_variable()
call = Assignment(result, '=', [CallStatement(c, args)])
f.content.append(call)
literals.add(result)
if branch == 'loop_integer':
gen = LoopIntegerGenerator(self.module, self.stats, self.opts,
self.rng)
c = gen.generate(self.opts['loop_integer'], 2, [])
self.module.content.insert(0, c)
args = self.rng.sample(list(literals), 2)
result = self.next_variable()
call = Assignment(result, '=', [CallStatement(c, args)])
f.content.append(call)
literals.add(result)
if branch == 'change_global':
gen = ChangeGlobalGenerator(self.module, self.stats, self.opts,
self.rng)
c = gen.generate(self.opts['change_global'], 0, [])
self.module.content.insert(0, c)
result = self.next_variable()
call = Assignment(result, '=', [CallStatement(c, [])])
f.content.append(call)
literals.add(result)
if branch == 'integer_closure':
gen = IntegerClosureGenerator(self.module, self.stats, self.opts,
self.rng)
func = gen.generate(self.opts['integer_closure'], 2, [])
args = self.rng.sample(list(literals), 2)
result = self.next_variable()
call = Assignment(result, '=', [CallStatement(func, args)])
f.content.append(call)
literals.add(result)
if branch == 'tail_recursion':
gen = TailRecursionGenerator(self.module, self.stats, self.opts,
self.rng)
func = gen.generate(self.opts['tail_recursion'], 2, [])
args = self.rng.sample(list(literals), 2)
result = self.next_variable()
call = Assignment(result, '=', [CallStatement(func, args)])
f.content.append(call)
literals.add(result)
if branch == 'classes':
from . import classes
gen = classes.ClassGenerator(self.module, self.stats, self.opts,
self.rng)
result = gen.generate_inline(literals)
f.content.extend(result)
