90fe2805df
Although `Env` (as `Vars`), `Args`, path functions, and OS constants are publicly exposed via `std::env`, their implementations are each self-contained. Keep them separate in `std::sys` and make a new module, `sys::env`, for `Env`.
43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
use crate::ffi::{OsStr, OsString};
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use crate::{fmt, io};
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pub struct Env(!);
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impl Env {
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// FIXME(https://github.com/rust-lang/rust/issues/114583): Remove this when <OsStr as Debug>::fmt matches <str as Debug>::fmt.
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pub fn str_debug(&self) -> impl fmt::Debug + '_ {
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let Self(inner) = self;
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match *inner {}
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}
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}
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impl fmt::Debug for Env {
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fn fmt(&self, _: &mut fmt::Formatter<'_>) -> fmt::Result {
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let Self(inner) = self;
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match *inner {}
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}
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}
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impl Iterator for Env {
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type Item = (OsString, OsString);
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fn next(&mut self) -> Option<(OsString, OsString)> {
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let Self(inner) = self;
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match *inner {}
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}
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}
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pub fn env() -> Env {
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panic!("not supported on this platform")
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}
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pub fn getenv(_: &OsStr) -> Option<OsString> {
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None
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}
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pub unsafe fn setenv(_: &OsStr, _: &OsStr) -> io::Result<()> {
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Err(io::const_error!(io::ErrorKind::Unsupported, "cannot set env vars on this platform"))
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}
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pub unsafe fn unsetenv(_: &OsStr) -> io::Result<()> {
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Err(io::const_error!(io::ErrorKind::Unsupported, "cannot unset env vars on this platform"))
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}
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