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Add dropwhile.__reduce__ by dvermd · Pull Request #4201 · RustPython/RustPython · GitHub

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Add dropwhile.__reduce__ #4201

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Merged
youknowone merged 1 commit into from
Oct 5, 2022
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Add dropwhile.__reduce__ #4201

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12 changes: 12 additions & 0 deletions extra_tests/snippets/stdlib_itertools.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

from testutils import assert_raises

import pickle

# itertools.chain tests
chain = itertools.chain
Expand Down Expand Up @@ -279,6 +280,17 @@ def assert_matches_seq(it, seq):
with assert_raises(StopIteration):
next(it)

def underten(x):
return x<10

it = itertools.dropwhile(underten, [1, 3, 5, 20, 2, 4, 6, 8])
assert pickle.dumps(it, 0) == b'citertools\ndropwhile\np0\n(c__main__\nunderten\np1\nc__builtin__\niter\np2\n((lp3\nI1\naI3\naI5\naI20\naI2\naI4\naI6\naI8\natp4\nRp5\nI0\nbtp6\nRp7\nI0\nb.'
assert pickle.dumps(it, 1) == b'citertools\ndropwhile\nq\x00(c__main__\nunderten\nq\x01c__builtin__\niter\nq\x02(]q\x03(K\x01K\x03K\x05K\x14K\x02K\x04K\x06K\x08etq\x04Rq\x05K\x00btq\x06Rq\x07K\x00b.'
assert pickle.dumps(it, 2) == b'\x80\x02citertools\ndropwhile\nq\x00c__main__\nunderten\nq\x01c__builtin__\niter\nq\x02]q\x03(K\x01K\x03K\x05K\x14K\x02K\x04K\x06K\x08e\x85q\x04Rq\x05K\x00b\x86q\x06Rq\x07K\x00b.'
assert pickle.dumps(it, 3) == b'\x80\x03citertools\ndropwhile\nq\x00c__main__\nunderten\nq\x01cbuiltins\niter\nq\x02]q\x03(K\x01K\x03K\x05K\x14K\x02K\x04K\x06K\x08e\x85q\x04Rq\x05K\x00b\x86q\x06Rq\x07K\x00b.'
assert pickle.dumps(it, 4) == b'\x80\x04\x95i\x00\x00\x00\x00\x00\x00\x00\x8c\titertools\x94\x8c\tdropwhile\x94\x93\x94\x8c\x08__main__\x94\x8c\x08underten\x94\x93\x94\x8c\x08builtins\x94\x8c\x04iter\x94\x93\x94]\x94(K\x01K\x03K\x05K\x14K\x02K\x04K\x06K\x08e\x85\x94R\x94K\x00b\x86\x94R\x94K\x00b.'
assert pickle.dumps(it, 5) == b'\x80\x05\x95i\x00\x00\x00\x00\x00\x00\x00\x8c\titertools\x94\x8c\tdropwhile\x94\x93\x94\x8c\x08__main__\x94\x8c\x08underten\x94\x93\x94\x8c\x08builtins\x94\x8c\x04iter\x94\x93\x94]\x94(K\x01K\x03K\x05K\x14K\x02K\x04K\x06K\x08e\x85\x94R\x94K\x00b\x86\x94R\x94K\x00b.'


# itertools.accumulate
it = itertools.accumulate([6, 3, 7, 1, 0, 9, 8, 8])
Expand Down
32 changes: 25 additions & 7 deletions vm/src/stdlib/itertools.rs
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Expand Up @@ -2,21 +2,23 @@ pub(crate) use decl::make_module;

#[pymodule(name = "itertools")]
mod decl {
use crate::common::{
lock::{PyMutex, PyRwLock, PyRwLockWriteGuard},
rc::PyRc,
};
use crate::{
builtins::{int, PyGenericAlias, PyInt, PyIntRef, PyList, PyTuple, PyTupleRef, PyTypeRef},
common::{
lock::{PyMutex, PyRwLock, PyRwLockWriteGuard},
rc::PyRc,
},
convert::ToPyObject,
function::{ArgCallable, FuncArgs, OptionalArg, OptionalOption, PosArgs},
function::{ArgCallable, ArgIntoBool, FuncArgs, OptionalArg, OptionalOption, PosArgs},
identifier,
protocol::{PyIter, PyIterReturn, PyNumber},
stdlib::sys,
types::{Constructor, IterNext, IterNextIterable},
AsObject, Py, PyObjectRef, PyPayload, PyRef, PyResult, PyWeakRef, VirtualMachine,
AsObject, Py, PyObjectRef, PyPayload, PyRef, PyResult, PyWeakRef, TryFromObject,
VirtualMachine,
};
use crossbeam_utils::atomic::AtomicCell;
use num_bigint::BigInt;
use num_traits::{Signed, ToPrimitive};
use std::fmt;

Expand Down Expand Up @@ -540,7 +542,23 @@ mod decl {
}

#[pyclass(with(IterNext, Constructor), flags(BASETYPE))]
impl PyItertoolsDropwhile {}
impl PyItertoolsDropwhile {
#[pymethod(magic)]
fn reduce(zelf: PyRef<Self>) -> (PyTypeRef, (PyObjectRef, PyIter), BigInt) {
(
zelf.class().clone(),
(zelf.predicate.clone().into(), zelf.iterable.clone()),
(if zelf.start_flag.load() { 1 } else { 0 }).into(),
)
}
#[pymethod(magic)]
fn setstate(zelf: PyRef<Self>, state: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
if let Ok(obj) = ArgIntoBool::try_from_object(vm, state) {
zelf.start_flag.store(*obj);
}
Ok(())
}
}
impl IterNextIterable for PyItertoolsDropwhile {}
impl IterNext for PyItertoolsDropwhile {
fn next(zelf: &Py<Self>, vm: &VirtualMachine) -> PyResult<PyIterReturn> {
Expand Down
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