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sysmodule.rs
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use num_traits::ToPrimitive;
use std::{env, mem, path};
use crate::builtins::{PyStr, PyStrRef, PyTypeRef};
use crate::common::hash::{PyHash, PyUHash};
use crate::frame::FrameRef;
use crate::function::{Args, FuncArgs, OptionalArg};
use crate::pyobject::{
ItemProtocol, PyClassImpl, PyContext, PyObjectRef, PyRefExact, PyResult, PyStructSequence,
};
use crate::vm::{PySettings, VirtualMachine};
use crate::{builtins, exceptions, py_io, version};
/*
* The magic sys module.
*/
const MAXSIZE: usize = std::isize::MAX as usize;
const MAXUNICODE: u32 = std::char::MAX as u32;
fn argv(vm: &VirtualMachine) -> PyObjectRef {
vm.ctx.new_list(
vm.state
.settings
.argv
.iter()
.map(|arg| vm.ctx.new_str(arg))
.collect(),
)
}
fn executable(ctx: &PyContext) -> PyObjectRef {
if let Some(exec_path) = env::args().next() {
let path = path::Path::new(&exec_path);
if !path.exists() {
return ctx.new_str("");
}
if path.is_absolute() {
return ctx.new_str(exec_path);
}
if let Ok(dir) = env::current_dir() {
if let Ok(dir) = dir.into_os_string().into_string() {
return ctx.new_str(format!(
"{}/{}",
dir,
exec_path.strip_prefix("./").unwrap_or(&exec_path)
));
}
}
}
ctx.none()
}
fn _base_executable(ctx: &PyContext) -> PyObjectRef {
if let Ok(var) = env::var("__PYVENV_LAUNCHER__") {
ctx.new_str(var)
} else {
executable(ctx)
}
}
#[allow(non_snake_case)] // it's the function sys._getframe -> sys__getframe
fn sys__getframe(offset: OptionalArg<usize>, vm: &VirtualMachine) -> PyResult<FrameRef> {
let offset = offset.into_option().unwrap_or(0);
if offset > vm.frames.borrow().len() - 1 {
return Err(vm.new_value_error("call stack is not deep enough".to_owned()));
}
let idx = vm.frames.borrow().len() - offset - 1;
let frame = &vm.frames.borrow()[idx];
Ok(frame.clone())
}
/// sys.flags
///
/// Flags provided through command line arguments or environment vars.
#[pyclass(name = "flags", module = "sys")]
#[derive(Debug, PyStructSequence)]
struct SysFlags {
/// -d
debug: u8,
/// -i
inspect: u8,
/// -i
interactive: u8,
/// -O or -OO
optimize: u8,
/// -B
dont_write_bytecode: u8,
/// -s
no_user_site: u8,
/// -S
no_site: u8,
/// -E
ignore_environment: u8,
/// -v
verbose: u8,
/// -b
bytes_warning: u64,
/// -q
quiet: u8,
/// -R
hash_randomization: u8,
/// -I
isolated: u8,
/// -X dev
dev_mode: bool,
/// -X utf8
utf8_mode: u8,
}
#[pyimpl(with(PyStructSequence))]
impl SysFlags {
fn from_settings(settings: &PySettings) -> Self {
SysFlags {
debug: settings.debug as u8,
inspect: settings.inspect as u8,
interactive: settings.interactive as u8,
optimize: settings.optimize,
dont_write_bytecode: settings.dont_write_bytecode as u8,
no_user_site: settings.no_user_site as u8,
no_site: settings.no_site as u8,
ignore_environment: settings.ignore_environment as u8,
verbose: settings.verbose,
bytes_warning: settings.bytes_warning,
quiet: settings.quiet as u8,
hash_randomization: settings.hash_seed.is_none() as u8,
isolated: settings.isolated as u8,
dev_mode: settings.dev_mode,
utf8_mode: 0,
}
}
#[pyslot]
fn tp_new(_cls: PyTypeRef, _args: FuncArgs, vm: &VirtualMachine) -> PyResult {
Err(vm.new_type_error("cannot create 'sys.flags' instances".to_owned()))
}
}
fn sys_getrefcount(obj: PyObjectRef) -> usize {
PyObjectRef::strong_count(&obj)
}
fn sys_getsizeof(obj: PyObjectRef) -> usize {
// TODO: implement default optional argument.
mem::size_of_val(&obj)
}
fn sys_getfilesystemencoding(_vm: &VirtualMachine) -> String {
// TODO: implement non-utf-8 mode.
"utf-8".to_owned()
}
fn sys_getdefaultencoding(_vm: &VirtualMachine) -> String {
"utf-8".to_owned()
}
#[cfg(not(windows))]
fn sys_getfilesystemencodeerrors(_vm: &VirtualMachine) -> String {
"surrogateescape".to_owned()
}
#[cfg(windows)]
fn sys_getfilesystemencodeerrors(_vm: &VirtualMachine) -> String {
"surrogatepass".to_owned()
}
fn sys_getprofile(vm: &VirtualMachine) -> PyObjectRef {
vm.profile_func.borrow().clone()
}
fn sys_setprofile(profilefunc: PyObjectRef, vm: &VirtualMachine) {
vm.profile_func.replace(profilefunc);
update_use_tracing(vm);
}
fn sys_gettrace(vm: &VirtualMachine) -> PyObjectRef {
vm.trace_func.borrow().clone()
}
fn sys_settrace(tracefunc: PyObjectRef, vm: &VirtualMachine) {
vm.trace_func.replace(tracefunc);
update_use_tracing(vm);
}
fn update_use_tracing(vm: &VirtualMachine) {
let trace_is_none = vm.is_none(&vm.trace_func.borrow());
let profile_is_none = vm.is_none(&vm.profile_func.borrow());
let tracing = !(trace_is_none && profile_is_none);
vm.use_tracing.set(tracing);
}
fn sys_getrecursionlimit(vm: &VirtualMachine) -> usize {
vm.recursion_limit.get()
}
fn sys_setrecursionlimit(recursion_limit: i32, vm: &VirtualMachine) -> PyResult<()> {
let recursion_limit = recursion_limit
.to_usize()
.filter(|&u| u >= 1)
.ok_or_else(|| {
vm.new_value_error("recursion limit must be greater than or equal to one".to_owned())
})?;
let recursion_depth = vm.frames.borrow().len();
if recursion_limit > recursion_depth + 1 {
vm.recursion_limit.set(recursion_limit);
Ok(())
} else {
Err(vm.new_recursion_error(format!(
"cannot set the recursion limit to {} at the recursion depth {}: the limit is too low",
recursion_limit, recursion_depth
)))
}
}
fn sys_intern(s: PyRefExact<PyStr>, vm: &VirtualMachine) -> PyStrRef {
vm.intern_string(s)
}
fn sys_exc_info(vm: &VirtualMachine) -> (PyObjectRef, PyObjectRef, PyObjectRef) {
match vm.current_exception() {
Some(exception) => exceptions::split(exception, vm),
None => (vm.ctx.none(), vm.ctx.none(), vm.ctx.none()),
}
}
fn sys_git_info(vm: &VirtualMachine) -> PyObjectRef {
vm.ctx.new_tuple(vec![
vm.ctx.new_str("RustPython"),
vm.ctx.new_str(version::get_git_identifier()),
vm.ctx.new_str(version::get_git_revision()),
])
}
fn sys_exit(code: OptionalArg<PyObjectRef>, vm: &VirtualMachine) -> PyResult {
let code = code.unwrap_or_none(vm);
Err(vm.new_exception(vm.ctx.exceptions.system_exit.clone(), vec![code]))
}
fn sys_audit(_args: FuncArgs) {
// TODO: sys.audit implementation
}
fn sys_displayhook(obj: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
// Save non-None values as "_"
if vm.is_none(&obj) {
return Ok(());
}
// set to none to avoid recursion while printing
vm.set_attr(&vm.builtins, "_", vm.ctx.none())?;
// TODO: catch encoding errors
let repr = vm.to_repr(&obj)?.into_object();
builtins::print(Args::new(vec![repr]), Default::default(), vm)?;
vm.set_attr(&vm.builtins, "_", obj)?;
Ok(())
}
#[pyclass(module = "sys", name = "getwindowsversion")]
#[derive(Default, Debug, PyStructSequence)]
#[cfg(windows)]
struct WindowsVersion {
major: u32,
minor: u32,
build: u32,
platform: u32,
service_pack: String,
service_pack_major: u16,
service_pack_minor: u16,
suite_mask: u16,
product_type: u8,
platform_version: (u32, u32, u32),
}
#[cfg(windows)]
#[pyimpl(with(PyStructSequence))]
impl WindowsVersion {}
#[cfg(windows)]
fn sys_getwindowsversion(vm: &VirtualMachine) -> PyResult<crate::builtins::tuple::PyTupleRef> {
use std::ffi::OsString;
use std::os::windows::ffi::OsStringExt;
use winapi::um::{
sysinfoapi::GetVersionExW,
winnt::{LPOSVERSIONINFOEXW, LPOSVERSIONINFOW, OSVERSIONINFOEXW},
};
let mut version = OSVERSIONINFOEXW::default();
version.dwOSVersionInfoSize = std::mem::size_of::<OSVERSIONINFOEXW>() as u32;
let result = unsafe {
let osvi = &mut version as LPOSVERSIONINFOEXW as LPOSVERSIONINFOW;
// SAFETY: GetVersionExW accepts a pointer of OSVERSIONINFOW, but winapi crate's type currently doesn't allow to do so.
// https://docs.microsoft.com/en-us/windows/win32/api/sysinfoapi/nf-sysinfoapi-getversionexw#parameters
GetVersionExW(osvi)
};
if result == 0 {
return Err(vm.new_os_error("failed to get windows version".to_owned()));
}
let service_pack = {
let (last, _) = version
.szCSDVersion
.iter()
.take_while(|&x| x != &0)
.enumerate()
.last()
.unwrap_or((0, &0));
let sp = OsString::from_wide(&version.szCSDVersion[..last]);
sp.into_string()
.map_err(|_| vm.new_os_error("service pack is not ASCII".to_owned()))?
};
WindowsVersion {
major: version.dwMajorVersion,
minor: version.dwMinorVersion,
build: version.dwBuildNumber,
platform: version.dwPlatformId,
service_pack,
service_pack_major: version.wServicePackMajor,
service_pack_minor: version.wServicePackMinor,
suite_mask: version.wSuiteMask,
product_type: version.wProductType,
platform_version: (
version.dwMajorVersion,
version.dwMinorVersion,
version.dwBuildNumber,
), // TODO Provide accurate version, like CPython impl
}
.into_struct_sequence(vm)
}
pub fn get_stdin(vm: &VirtualMachine) -> PyResult {
vm.get_attribute(vm.sys_module.clone(), "stdin")
.map_err(|_| vm.new_runtime_error("lost sys.stdin".to_owned()))
}
pub fn get_stdout(vm: &VirtualMachine) -> PyResult {
vm.get_attribute(vm.sys_module.clone(), "stdout")
.map_err(|_| vm.new_runtime_error("lost sys.stdout".to_owned()))
}
pub fn get_stderr(vm: &VirtualMachine) -> PyResult {
vm.get_attribute(vm.sys_module.clone(), "stderr")
.map_err(|_| vm.new_runtime_error("lost sys.stderr".to_owned()))
}
/// Similar to PySys_WriteStderr in CPython.
///
/// # Usage
///
/// ```rust,ignore
/// writeln!(sysmodule::PyStderr(vm), "foo bar baz :)");
/// ```
///
/// Unlike writing to a `std::io::Write` with the `write[ln]!()` macro, there's no error condition here;
/// this is intended to be a replacement for the `eprint[ln]!()` macro, so `write!()`-ing to PyStderr just
/// returns `()`.
pub struct PyStderr<'vm>(pub &'vm VirtualMachine);
impl PyStderr<'_> {
pub fn write_fmt(&self, args: std::fmt::Arguments<'_>) {
use py_io::Write;
let vm = self.0;
if let Ok(stderr) = get_stderr(vm) {
let mut stderr = py_io::PyWriter(stderr, vm);
if let Ok(()) = stderr.write_fmt(args) {
return;
}
}
eprint!("{}", args)
}
}
fn sys_excepthook(
exc_type: PyObjectRef,
exc_val: PyObjectRef,
exc_tb: PyObjectRef,
vm: &VirtualMachine,
) -> PyResult<()> {
let exc = exceptions::normalize(exc_type, exc_val, exc_tb, vm)?;
let stderr = get_stderr(vm)?;
exceptions::write_exception(&mut py_io::PyWriter(stderr, vm), vm, &exc)
}
const PLATFORM: &str = {
cfg_if::cfg_if! {
if #[cfg(any(target_os = "linux", target_os = "android"))] {
// Android is linux as well. see https://bugs.python.org/issue32637
"linux"
} else if #[cfg(target_os = "macos")] {
"darwin"
} else if #[cfg(windows)] {
"win32"
} else {
"unknown"
}
}
};
const ABIFLAGS: &str = "";
// not the same as CPython (e.g. rust's x86_x64-unknown-linux-gnu is just x86_64-linux-gnu)
// but hopefully that's just an implementation detail? TODO: copy CPython's multiarch exactly,
// https://github.com/python/cpython/blob/3.8/configure.ac#L725
const MULTIARCH: &str = env!("RUSTPYTHON_TARGET_TRIPLE");
pub(crate) fn sysconfigdata_name() -> String {
format!("_sysconfigdata_{}_{}_{}", ABIFLAGS, PLATFORM, MULTIARCH)
}
#[pyclass(module = "sys", name = "hash_info")]
#[derive(PyStructSequence)]
struct PyHashInfo {
width: usize,
modulus: PyUHash,
inf: PyHash,
nan: PyHash,
imag: PyHash,
algorithm: &'static str,
hash_bits: usize,
seed_bits: usize,
cutoff: usize,
}
#[pyimpl(with(PyStructSequence))]
impl PyHashInfo {
const INFO: Self = {
use rustpython_common::hash::*;
PyHashInfo {
width: std::mem::size_of::<PyHash>() * 8,
modulus: MODULUS,
inf: INF,
nan: NAN,
imag: IMAG,
algorithm: ALGO,
hash_bits: HASH_BITS,
seed_bits: SEED_BITS,
cutoff: 0, // no small string optimizations
}
};
}
#[pyclass(module = "sys", name = "float_info")]
#[derive(PyStructSequence)]
struct PyFloatInfo {
max: f64,
max_exp: i32,
max_10_exp: i32,
min: f64,
min_exp: i32,
min_10_exp: i32,
dig: u32,
mant_dig: u32,
epsilon: f64,
radix: u32,
rounds: i32,
}
#[pyimpl(with(PyStructSequence))]
impl PyFloatInfo {
const INFO: Self = PyFloatInfo {
max: f64::MAX,
max_exp: f64::MAX_EXP,
max_10_exp: f64::MAX_10_EXP,
min: f64::MIN_POSITIVE,
min_exp: f64::MIN_EXP,
min_10_exp: f64::MIN_10_EXP,
dig: f64::DIGITS,
mant_dig: f64::MANTISSA_DIGITS,
epsilon: f64::EPSILON,
radix: f64::RADIX,
rounds: 1, // FE_TONEAREST
};
}
#[pyclass(module = "sys", name = "int_info")]
#[derive(PyStructSequence)]
struct PyIntInfo {
bits_per_digit: usize,
sizeof_digit: usize,
}
#[pyimpl(with(PyStructSequence))]
impl PyIntInfo {
const INFO: Self = PyIntInfo {
bits_per_digit: 30, //?
sizeof_digit: std::mem::size_of::<u32>(),
};
}
pub(crate) fn make_module(vm: &VirtualMachine, module: PyObjectRef, builtins: PyObjectRef) {
let ctx = &vm.ctx;
let _flags_type = SysFlags::make_class(ctx);
let flags = SysFlags::from_settings(&vm.state.settings)
.into_struct_sequence(vm)
.unwrap();
let _version_info_type = version::VersionInfo::make_class(ctx);
let version_info = version::VersionInfo::VERSION
.into_struct_sequence(vm)
.unwrap();
let _hash_info_type = PyHashInfo::make_class(ctx);
let hash_info = PyHashInfo::INFO.into_struct_sequence(vm).unwrap();
let _float_info_type = PyFloatInfo::make_class(ctx);
let float_info = PyFloatInfo::INFO.into_struct_sequence(vm).unwrap();
let _int_info_type = PyIntInfo::make_class(ctx);
let int_info = PyIntInfo::INFO.into_struct_sequence(vm).unwrap();
// TODO Add crate version to this namespace
let implementation = py_namespace!(vm, {
"name" => ctx.new_str("rustpython"),
"cache_tag" => ctx.new_str("rustpython-01"),
"_multiarch" => ctx.new_str(MULTIARCH.to_owned()),
"version" => version_info.clone(),
"hexversion" => ctx.new_int(version::VERSION_HEX),
});
let path = ctx.new_list(
vm.state
.settings
.path_list
.iter()
.map(|path| ctx.new_str(path.clone()))
.collect(),
);
let framework = "".to_owned();
let xopts = ctx.new_dict();
for (key, value) in &vm.state.settings.xopts {
let value = value
.as_ref()
.map_or_else(|| ctx.new_bool(true), |s| ctx.new_str(s.clone()));
xopts.set_item(&**key, value, vm).unwrap();
}
let warnopts = ctx.new_list(
vm.state
.settings
.warnopts
.iter()
.map(|s| ctx.new_str(s.clone()))
.collect(),
);
// https://doc.rust-lang.org/reference/conditional-compilation.html#target_endian
let bytorder = if cfg!(target_endian = "little") {
"little".to_owned()
} else if cfg!(target_endian = "big") {
"big".to_owned()
} else {
"unknown".to_owned()
};
let copyright = "Copyright (c) 2019 RustPython Team";
let sys_doc = "This module provides access to some objects used or maintained by the
interpreter and to functions that interact strongly with the interpreter.
Dynamic objects:
argv -- command line arguments; argv[0] is the script pathname if known
path -- module search path; path[0] is the script directory, else ''
modules -- dictionary of loaded modules
displayhook -- called to show results in an interactive session
excepthook -- called to handle any uncaught exception other than SystemExit
To customize printing in an interactive session or to install a custom
top-level exception handler, assign other functions to replace these.
stdin -- standard input file object; used by input()
stdout -- standard output file object; used by print()
stderr -- standard error object; used for error messages
By assigning other file objects (or objects that behave like files)
to these, it is possible to redirect all of the interpreter's I/O.
last_type -- type of last uncaught exception
last_value -- value of last uncaught exception
last_traceback -- traceback of last uncaught exception
These three are only available in an interactive session after a
traceback has been printed.
Static objects:
builtin_module_names -- tuple of module names built into this interpreter
copyright -- copyright notice pertaining to this interpreter
exec_prefix -- prefix used to find the machine-specific Python library
executable -- absolute path of the executable binary of the Python interpreter
float_info -- a struct sequence with information about the float implementation.
float_repr_style -- string indicating the style of repr() output for floats
hash_info -- a struct sequence with information about the hash algorithm.
hexversion -- version information encoded as a single integer
implementation -- Python implementation information.
int_info -- a struct sequence with information about the int implementation.
maxsize -- the largest supported length of containers.
maxunicode -- the value of the largest Unicode code point
platform -- platform identifier
prefix -- prefix used to find the Python library
thread_info -- a struct sequence with information about the thread implementation.
version -- the version of this interpreter as a string
version_info -- version information as a named tuple
_base_executable -- __PYVENV_LAUNCHER__ enviroment variable if defined, else sys.executable.
__stdin__ -- the original stdin; don't touch!
__stdout__ -- the original stdout; don't touch!
__stderr__ -- the original stderr; don't touch!
__displayhook__ -- the original displayhook; don't touch!
__excepthook__ -- the original excepthook; don't touch!
Functions:
displayhook() -- print an object to the screen, and save it in builtins._
excepthook() -- print an exception and its traceback to sys.stderr
exc_info() -- return thread-safe information about the current exception
exit() -- exit the interpreter by raising SystemExit
getdlopenflags() -- returns flags to be used for dlopen() calls
getprofile() -- get the global profiling function
getrefcount() -- return the reference count for an object (plus one :-)
getrecursionlimit() -- return the max recursion depth for the interpreter
getsizeof() -- return the size of an object in bytes
gettrace() -- get the global debug tracing function
setcheckinterval() -- control how often the interpreter checks for events
setdlopenflags() -- set the flags to be used for dlopen() calls
setprofile() -- set the global profiling function
setrecursionlimit() -- set the max recursion depth for the interpreter
settrace() -- set the global debug tracing function
";
let mut module_names: Vec<String> = vm.state.stdlib_inits.keys().cloned().collect();
module_names.push("sys".to_owned());
module_names.push("builtins".to_owned());
module_names.sort();
let builtin_module_names =
ctx.new_tuple(module_names.into_iter().map(|n| ctx.new_str(n)).collect());
let modules = ctx.new_dict();
let prefix = option_env!("RUSTPYTHON_PREFIX").unwrap_or("/usr/local");
let base_prefix = option_env!("RUSTPYTHON_BASEPREFIX").unwrap_or(prefix);
let exec_prefix = option_env!("RUSTPYTHON_EXECPREFIX").unwrap_or(prefix);
let base_exec_prefix = option_env!("RUSTPYTHON_BASEEXECPREFIX").unwrap_or(exec_prefix);
extend_module!(vm, module, {
"__name__" => ctx.new_str(String::from("sys")),
"argv" => argv(vm),
"builtin_module_names" => builtin_module_names,
"byteorder" => ctx.new_str(bytorder),
"copyright" => ctx.new_str(copyright),
"_base_executable" => _base_executable(ctx),
"executable" => executable(ctx),
"flags" => flags,
"getrefcount" => named_function!(ctx, sys, getrefcount),
"getrecursionlimit" => named_function!(ctx, sys, getrecursionlimit),
"getsizeof" => named_function!(ctx, sys, getsizeof),
"implementation" => implementation,
"getfilesystemencoding" => named_function!(ctx, sys, getfilesystemencoding),
"getfilesystemencodeerrors" => named_function!(ctx, sys, getfilesystemencodeerrors),
"getdefaultencoding" => named_function!(ctx, sys, getdefaultencoding),
"getprofile" => named_function!(ctx, sys, getprofile),
"gettrace" => named_function!(ctx, sys, gettrace),
"hash_info" => hash_info,
"intern" => named_function!(ctx, sys, intern),
"maxunicode" => ctx.new_int(MAXUNICODE),
"maxsize" => ctx.new_int(MAXSIZE),
"path" => path,
"ps1" => ctx.new_str(">>>>> "),
"ps2" => ctx.new_str("..... "),
"__doc__" => ctx.new_str(sys_doc),
"_getframe" => named_function!(ctx, sys, _getframe),
"modules" => modules.clone(),
"warnoptions" => ctx.new_list(vec![]),
"platform" => ctx.new_str(PLATFORM.to_owned()),
"_framework" => ctx.new_str(framework),
"meta_path" => ctx.new_list(vec![]),
"path_hooks" => ctx.new_list(vec![]),
"path_importer_cache" => ctx.new_dict(),
"pycache_prefix" => vm.ctx.none(),
"dont_write_bytecode" => vm.ctx.new_bool(vm.state.settings.dont_write_bytecode),
"setprofile" => named_function!(ctx, sys, setprofile),
"setrecursionlimit" => named_function!(ctx, sys, setrecursionlimit),
"settrace" =
4D23
> named_function!(ctx, sys, settrace),
"version" => vm.ctx.new_str(version::get_version()),
"version_info" => version_info,
"_git" => sys_git_info(vm),
"exc_info" => named_function!(ctx, sys, exc_info),
"prefix" => ctx.new_str(prefix),
"base_prefix" => ctx.new_str(base_prefix),
"exec_prefix" => ctx.new_str(exec_prefix),
"base_exec_prefix" => ctx.new_str(base_exec_prefix),
"exit" => named_function!(ctx, sys, exit),
"abiflags" => ctx.new_str(ABIFLAGS.to_owned()),
"audit" => named_function!(ctx, sys, audit),
"displayhook" => named_function!(ctx, sys, displayhook),
"__displayhook__" => named_function!(ctx, sys, displayhook),
"excepthook" => named_function!(ctx, sys, excepthook),
"__excepthook__" => named_function!(ctx, sys, excepthook),
"hexversion" => ctx.new_int(version::VERSION_HEX),
"api_version" => ctx.new_int(0x0), // what C api?
"float_info" => float_info,
"int_info" => int_info,
"float_repr_style" => ctx.new_str("short"),
"_xoptions" => xopts,
"warnoptions" => warnopts,
});
#[cfg(windows)]
{
WindowsVersion::make_class(ctx);
extend_module!(vm, module, {
"getwindowsversion" => named_function!(ctx, sys, getwindowsversion),
})
}
modules.set_item("sys", module, vm).unwrap();
modules.set_item("builtins", builtins, vm).unwrap();
}