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use super::unsupported;
use crate::error::Error as StdError;
use crate::ffi::{OsStr, OsString};
use crate::fmt;
use crate::io;
use crate::marker::PhantomData;
use crate::os::xous::ffi::Error as XousError;
use crate::path::{self, PathBuf};
#[cfg(not(test))]
mod c_compat {
use crate::os::xous::ffi::exit;
extern "C" {
fn main() -> u32;
}
#[no_mangle]
pub extern "C" fn abort() {
exit(1);
}
#[no_mangle]
pub extern "C" fn _start() {
exit(unsafe { main() });
}
// This function is needed by the panic runtime. The symbol is named in
// pre-link args for the target specification, so keep that in sync.
#[no_mangle]
// NB. used by both libunwind and libpanic_abort
pub extern "C" fn __rust_abort() -> ! {
exit(101);
}
}
pub fn errno() -> i32 {
0
}
pub fn error_string(errno: i32) -> String {
Into::<XousError>::into(errno).to_string()
}
pub fn getcwd() -> io::Result<PathBuf> {
unsupported()
}
pub fn chdir(_: &path::Path) -> io::Result<()> {
unsupported()
}
pub struct SplitPaths<'a>(!, PhantomData<&'a ()>);
pub fn split_paths(_unparsed: &OsStr) -> SplitPaths<'_> {
panic!("unsupported")
}
impl<'a> Iterator for SplitPaths<'a> {
type Item = PathBuf;
fn next(&mut self) -> Option<PathBuf> {
self.0
}
}
#[derive(Debug)]
pub struct JoinPathsError;
pub fn join_paths<I, T>(_paths: I) -> Result<OsString, JoinPathsError>
where
I: Iterator<Item = T>,
T: AsRef<OsStr>,
{
Err(JoinPathsError)
}
impl fmt::Display for JoinPathsError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
"not supported on this platform yet".fmt(f)
}
}
impl StdError for JoinPathsError {
#[allow(deprecated)]
fn description(&self) -> &str {
"not supported on this platform yet"
}
}
pub fn current_exe() -> io::Result<PathBuf> {
unsupported()
}
pub struct Env(!);
impl Env {
// FIXME(https://github.com/rust-lang/rust/issues/114583): Remove this when <OsStr as Debug>::fmt matches <str as Debug>::fmt.
pub fn str_debug(&self) -> impl fmt::Debug + '_ {
let Self(inner) = self;
match *inner {}
}
}
impl fmt::Debug for Env {
fn fmt(&self, _: &mut fmt::Formatter<'_>) -> fmt::Result {
let Self(inner) = self;
match *inner {}
}
}
impl Iterator for Env {
type Item = (OsString, OsString);
fn next(&mut self) -> Option<(OsString, OsString)> {
self.0
}
}
pub fn env() -> Env {
panic!("not supported on this platform")
}
pub fn getenv(_: &OsStr) -> Option<OsString> {
None
}
pub fn setenv(_: &OsStr, _: &OsStr) -> io::Result<()> {
Err(io::const_io_error!(io::ErrorKind::Unsupported, "cannot set env vars on this platform"))
}
pub fn unsetenv(_: &OsStr) -> io::Result<()> {
Err(io::const_io_error!(io::ErrorKind::Unsupported, "cannot unset env vars on this platform"))
}
pub fn temp_dir() -> PathBuf {
panic!("no filesystem on this platform")
}
pub fn home_dir() -> Option<PathBuf> {
None
}
pub fn exit(code: i32) -> ! {
crate::os::xous::ffi::exit(code as u32);
}
pub fn getpid() -> u32 {
panic!("no pids on this platform")
}
|
