Deleted vendor folder

1 files changed, 0 insertions, 588 deletions

diff --git a/vendor/rustc-demangle/src/lib.rs b/vendor/rustc-demangle/src/lib.rs
deleted file mode 100644
index cafec2f..0000000
--- a/vendor/rustc-demangle/src/lib.rs
+++ /dev/null
@@ -1,588 +0,0 @@
-//! Demangle Rust compiler symbol names.
-//!
-//! This crate provides a `demangle` function which will return a `Demangle`
-//! sentinel value that can be used to learn about the demangled version of a
-//! symbol name. The demangled representation will be the same as the original
-//! if it doesn't look like a mangled symbol name.
-//!
-//! `Demangle` can be formatted with the `Display` trait. The alternate
-//! modifier (`#`) can be used to format the symbol name without the
-//! trailing hash value.
-//!
-//! # Examples
-//!
-//! ```
-//! use rustc_demangle::demangle;
-//!
-//! assert_eq!(demangle("_ZN4testE").to_string(), "test");
-//! assert_eq!(demangle("_ZN3foo3barE").to_string(), "foo::bar");
-//! assert_eq!(demangle("foo").to_string(), "foo");
-//! // With hash
-//! assert_eq!(format!("{}", demangle("_ZN3foo17h05af221e174051e9E")), "foo::h05af221e174051e9");
-//! // Without hash
-//! assert_eq!(format!("{:#}", demangle("_ZN3foo17h05af221e174051e9E")), "foo");
-//! ```
-
-#![no_std]
-#![deny(missing_docs)]
-#![cfg_attr(docsrs, feature(doc_cfg))]
-
-#[cfg(any(test, feature = "std"))]
-#[macro_use]
-extern crate std;
-
-// HACK(eddyb) helper macros for tests.
-#[cfg(test)]
-macro_rules! assert_contains {
-    ($s:expr, $needle:expr) => {{
-        let (s, needle) = ($s, $needle);
-        assert!(
-            s.contains(needle),
-            "{:?} should've contained {:?}",
-            s,
-            needle
-        );
-    }};
-}
-#[cfg(test)]
-macro_rules! assert_ends_with {
-    ($s:expr, $suffix:expr) => {{
-        let (s, suffix) = ($s, $suffix);
-        assert!(
-            s.ends_with(suffix),
-            "{:?} should've ended in {:?}",
-            s,
-            suffix
-        );
-    }};
-}
-
-mod legacy;
-mod v0;
-
-use core::fmt::{self, Write as _};
-
-/// Representation of a demangled symbol name.
-pub struct Demangle<'a> {
-    style: Option<DemangleStyle<'a>>,
-    original: &'a str,
-    suffix: &'a str,
-}
-
-enum DemangleStyle<'a> {
-    Legacy(legacy::Demangle<'a>),
-    V0(v0::Demangle<'a>),
-}
-
-/// De-mangles a Rust symbol into a more readable version
-///
-/// This function will take a **mangled** symbol and return a value. When printed,
-/// the de-mangled version will be written. If the symbol does not look like
-/// a mangled symbol, the original value will be written instead.
-///
-/// # Examples
-///
-/// ```
-/// use rustc_demangle::demangle;
-///
-/// assert_eq!(demangle("_ZN4testE").to_string(), "test");
-/// assert_eq!(demangle("_ZN3foo3barE").to_string(), "foo::bar");
-/// assert_eq!(demangle("foo").to_string(), "foo");
-/// ```
-pub fn demangle(mut s: &str) -> Demangle {
-    // During ThinLTO LLVM may import and rename internal symbols, so strip out
-    // those endings first as they're one of the last manglings applied to symbol
-    // names.
-    let llvm = ".llvm.";
-    if let Some(i) = s.find(llvm) {
-        let candidate = &s[i + llvm.len()..];
-        let all_hex = candidate.chars().all(|c| match c {
-            'A'..='F' | '0'..='9' | '@' => true,
-            _ => false,
-        });
-
-        if all_hex {
-            s = &s[..i];
-        }
-    }
-
-    let mut suffix = "";
-    let mut style = match legacy::demangle(s) {
-        Ok((d, s)) => {
-            suffix = s;
-            Some(DemangleStyle::Legacy(d))
-        }
-        Err(()) => match v0::demangle(s) {
-            Ok((d, s)) => {
-                suffix = s;
-                Some(DemangleStyle::V0(d))
-            }
-            // FIXME(eddyb) would it make sense to treat an unknown-validity
-            // symbol (e.g. one that errored with `RecursedTooDeep`) as
-            // v0-mangled, and have the error show up in the demangling?
-            // (that error already gets past this initial check, and therefore
-            // will show up in the demangling, if hidden behind a backref)
-            Err(v0::ParseError::Invalid) | Err(v0::ParseError::RecursedTooDeep) => None,
-        },
-    };
-
-    // Output like LLVM IR adds extra period-delimited words. See if
-    // we are in that case and save the trailing words if so.
-    if !suffix.is_empty() {
-        if suffix.starts_with('.') && is_symbol_like(suffix) {
-            // Keep the suffix.
-        } else {
-            // Reset the suffix and invalidate the demangling.
-            suffix = "";
-            style = None;
-        }
-    }
-
-    Demangle {
-        style,
-        original: s,
-        suffix,
-    }
-}
-
-#[cfg(feature = "std")]
-fn demangle_line(
-    line: &str,
-    output: &mut impl std::io::Write,
-    include_hash: bool,
-) -> std::io::Result<()> {
-    let mut head = 0;
-    while head < line.len() {
-        // Move to the next potential match
-        let next_head = match (line[head..].find("_ZN"), line[head..].find("_R")) {
-            (Some(idx), None) | (None, Some(idx)) => head + idx,
-            (Some(idx1), Some(idx2)) => head + idx1.min(idx2),
-            (None, None) => {
-                // No more matches...
-                line.len()
-            }
-        };
-        output.write_all(line[head..next_head].as_bytes())?;
-        head = next_head;
-        // Find the non-matching character.
-        //
-        // If we do not find a character, then until the end of the line is the
-        // thing to demangle.
-        let match_end = line[head..]
-            .find(|ch: char| !(ch == '$' || ch == '.' || ch == '_' || ch.is_ascii_alphanumeric()))
-            .map(|idx| head + idx)
-            .unwrap_or(line.len());
-
-        let mangled = &line[head..match_end];
-        head = head + mangled.len();
-        if let Ok(demangled) = try_demangle(mangled) {
-            if include_hash {
-                write!(output, "{}", demangled)?;
-            } else {
-                write!(output, "{:#}", demangled)?;
-            }
-        } else {
-            output.write_all(mangled.as_bytes())?;
-        }
-    }
-    Ok(())
-}
-
-/// Process a stream of data from `input` into the provided `output`, demangling any symbols found
-/// within.
-///
-/// Note that the underlying implementation will perform many relatively small writes to the
-/// output. If the output is expensive to write to (e.g., requires syscalls), consider using
-/// `std::io::BufWriter`.
-#[cfg(feature = "std")]
-#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
-pub fn demangle_stream<R: std::io::BufRead, W: std::io::Write>(
-    input: &mut R,
-    output: &mut W,
-    include_hash: bool,
-) -> std::io::Result<()> {
-    let mut buf = std::string::String::new();
-    // We read in lines to reduce the memory usage at any time.
-    //
-    // demangle_line is also more efficient with relatively small buffers as it will copy around
-    // trailing data during demangling. In the future we might directly stream to the output but at
-    // least right now that seems to be less efficient.
-    while input.read_line(&mut buf)? > 0 {
-        demangle_line(&buf, output, include_hash)?;
-        buf.clear();
-    }
-    Ok(())
-}
-
-/// Error returned from the `try_demangle` function below when demangling fails.
-#[derive(Debug, Clone)]
-pub struct TryDemangleError {
-    _priv: (),
-}
-
-/// The same as `demangle`, except return an `Err` if the string does not appear
-/// to be a Rust symbol, rather than "demangling" the given string as a no-op.
-///
-/// ```
-/// extern crate rustc_demangle;
-///
-/// let not_a_rust_symbol = "la la la";
-///
-/// // The `try_demangle` function will reject strings which are not Rust symbols.
-/// assert!(rustc_demangle::try_demangle(not_a_rust_symbol).is_err());
-///
-/// // While `demangle` will just pass the non-symbol through as a no-op.
-/// assert_eq!(rustc_demangle::demangle(not_a_rust_symbol).as_str(), not_a_rust_symbol);
-/// ```
-pub fn try_demangle(s: &str) -> Result<Demangle, TryDemangleError> {
-    let sym = demangle(s);
-    if sym.style.is_some() {
-        Ok(sym)
-    } else {
-        Err(TryDemangleError { _priv: () })
-    }
-}
-
-impl<'a> Demangle<'a> {
-    /// Returns the underlying string that's being demangled.
-    pub fn as_str(&self) -> &'a str {
-        self.original
-    }
-}
-
-fn is_symbol_like(s: &str) -> bool {
-    s.chars().all(|c| {
-        // Once `char::is_ascii_punctuation` and `char::is_ascii_alphanumeric`
-        // have been stable for long enough, use those instead for clarity
-        is_ascii_alphanumeric(c) || is_ascii_punctuation(c)
-    })
-}
-
-// Copied from the documentation of `char::is_ascii_alphanumeric`
-fn is_ascii_alphanumeric(c: char) -> bool {
-    match c {
-        '\u{0041}'..='\u{005A}' | '\u{0061}'..='\u{007A}' | '\u{0030}'..='\u{0039}' => true,
-        _ => false,
-    }
-}
-
-// Copied from the documentation of `char::is_ascii_punctuation`
-fn is_ascii_punctuation(c: char) -> bool {
-    match c {
-        '\u{0021}'..='\u{002F}'
-        | '\u{003A}'..='\u{0040}'
-        | '\u{005B}'..='\u{0060}'
-        | '\u{007B}'..='\u{007E}' => true,
-        _ => false,
-    }
-}
-
-impl<'a> fmt::Display for DemangleStyle<'a> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        match *self {
-            DemangleStyle::Legacy(ref d) => fmt::Display::fmt(d, f),
-            DemangleStyle::V0(ref d) => fmt::Display::fmt(d, f),
-        }
-    }
-}
-
-// Maximum size of the symbol that we'll print.
-const MAX_SIZE: usize = 1_000_000;
-
-#[derive(Copy, Clone, Debug)]
-struct SizeLimitExhausted;
-
-struct SizeLimitedFmtAdapter<F> {
-    remaining: Result<usize, SizeLimitExhausted>,
-    inner: F,
-}
-
-impl<F: fmt::Write> fmt::Write for SizeLimitedFmtAdapter<F> {
-    fn write_str(&mut self, s: &str) -> fmt::Result {
-        self.remaining = self
-            .remaining
-            .and_then(|r| r.checked_sub(s.len()).ok_or(SizeLimitExhausted));
-
-        match self.remaining {
-            Ok(_) => self.inner.write_str(s),
-            Err(SizeLimitExhausted) => Err(fmt::Error),
-        }
-    }
-}
-
-impl<'a> fmt::Display for Demangle<'a> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        match self.style {
-            None => f.write_str(self.original)?,
-            Some(ref d) => {
-                let alternate = f.alternate();
-                let mut size_limited_fmt = SizeLimitedFmtAdapter {
-                    remaining: Ok(MAX_SIZE),
-                    inner: &mut *f,
-                };
-                let fmt_result = if alternate {
-                    write!(size_limited_fmt, "{:#}", d)
-                } else {
-                    write!(size_limited_fmt, "{}", d)
-                };
-                let size_limit_result = size_limited_fmt.remaining.map(|_| ());
-
-                // Translate a `fmt::Error` generated by `SizeLimitedFmtAdapter`
-                // into an error message, instead of propagating it upwards
-                // (which could cause panicking from inside e.g. `std::io::print`).
-                match (fmt_result, size_limit_result) {
-                    (Err(_), Err(SizeLimitExhausted)) => f.write_str("{size limit reached}")?,
-
-                    _ => {
-                        fmt_result?;
-                        size_limit_result
-                            .expect("`fmt::Error` from `SizeLimitedFmtAdapter` was discarded");
-                    }
-                }
-            }
-        }
-        f.write_str(self.suffix)
-    }
-}
-
-impl<'a> fmt::Debug for Demangle<'a> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        fmt::Display::fmt(self, f)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use std::prelude::v1::*;
-
-    macro_rules! t {
-        ($a:expr, $b:expr) => {
-            assert!(ok($a, $b))
-        };
-    }
-
-    macro_rules! t_err {
-        ($a:expr) => {
-            assert!(ok_err($a))
-        };
-    }
-
-    macro_rules! t_nohash {
-        ($a:expr, $b:expr) => {{
-            assert_eq!(format!("{:#}", super::demangle($a)), $b);
-        }};
-    }
-
-    fn ok(sym: &str, expected: &str) -> bool {
-        match super::try_demangle(sym) {
-            Ok(s) => {
-                if s.to_string() == expected {
-                    true
-                } else {
-                    println!("\n{}\n!=\n{}\n", s, expected);
-                    false
-                }
-            }
-            Err(_) => {
-                println!("error demangling");
-                false
-            }
-        }
-    }
-
-    fn ok_err(sym: &str) -> bool {
-        match super::try_demangle(sym) {
-            Ok(_) => {
-                println!("succeeded in demangling");
-                false
-            }
-            Err(_) => super::demangle(sym).to_string() == sym,
-        }
-    }
-
-    #[test]
-    fn demangle() {
-        t_err!("test");
-        t!("_ZN4testE", "test");
-        t_err!("_ZN4test");
-        t!("_ZN4test1a2bcE", "test::a::bc");
-    }
-
-    #[test]
-    fn demangle_dollars() {
-        t!("_ZN4$RP$E", ")");
-        t!("_ZN8$RF$testE", "&test");
-        t!("_ZN8$BP$test4foobE", "*test::foob");
-        t!("_ZN9$u20$test4foobE", " test::foob");
-        t!("_ZN35Bar$LT$$u5b$u32$u3b$$u20$4$u5d$$GT$E", "Bar<[u32; 4]>");
-    }
-
-    #[test]
-    fn demangle_many_dollars() {
-        t!("_ZN13test$u20$test4foobE", "test test::foob");
-        t!("_ZN12test$BP$test4foobE", "test*test::foob");
-    }
-
-    #[test]
-    fn demangle_osx() {
-        t!(
-            "__ZN5alloc9allocator6Layout9for_value17h02a996811f781011E",
-            "alloc::allocator::Layout::for_value::h02a996811f781011"
-        );
-        t!("__ZN38_$LT$core..option..Option$LT$T$GT$$GT$6unwrap18_MSG_FILE_LINE_COL17haf7cb8d5824ee659E", "<core::option::Option<T>>::unwrap::_MSG_FILE_LINE_COL::haf7cb8d5824ee659");
-        t!("__ZN4core5slice89_$LT$impl$u20$core..iter..traits..IntoIterator$u20$for$u20$$RF$$u27$a$u20$$u5b$T$u5d$$GT$9into_iter17h450e234d27262170E", "core::slice::<impl core::iter::traits::IntoIterator for &'a [T]>::into_iter::h450e234d27262170");
-    }
-
-    #[test]
-    fn demangle_windows() {
-        t!("ZN4testE", "test");
-        t!("ZN13test$u20$test4foobE", "test test::foob");
-        t!("ZN12test$RF$test4foobE", "test&test::foob");
-    }
-
-    #[test]
-    fn demangle_elements_beginning_with_underscore() {
-        t!("_ZN13_$LT$test$GT$E", "<test>");
-        t!("_ZN28_$u7b$$u7b$closure$u7d$$u7d$E", "{{closure}}");
-        t!("_ZN15__STATIC_FMTSTRE", "__STATIC_FMTSTR");
-    }
-
-    #[test]
-    fn demangle_trait_impls() {
-        t!(
-            "_ZN71_$LT$Test$u20$$u2b$$u20$$u27$static$u20$as$u20$foo..Bar$LT$Test$GT$$GT$3barE",
-            "<Test + 'static as foo::Bar<Test>>::bar"
-        );
-    }
-
-    #[test]
-    fn demangle_without_hash() {
-        let s = "_ZN3foo17h05af221e174051e9E";
-        t!(s, "foo::h05af221e174051e9");
-        t_nohash!(s, "foo");
-    }
-
-    #[test]
-    fn demangle_without_hash_edgecases() {
-        // One element, no hash.
-        t_nohash!("_ZN3fooE", "foo");
-        // Two elements, no hash.
-        t_nohash!("_ZN3foo3barE", "foo::bar");
-        // Longer-than-normal hash.
-        t_nohash!("_ZN3foo20h05af221e174051e9abcE", "foo");
-        // Shorter-than-normal hash.
-        t_nohash!("_ZN3foo5h05afE", "foo");
-        // Valid hash, but not at the end.
-        t_nohash!("_ZN17h05af221e174051e93fooE", "h05af221e174051e9::foo");
-        // Not a valid hash, missing the 'h'.
-        t_nohash!("_ZN3foo16ffaf221e174051e9E", "foo::ffaf221e174051e9");
-        // Not a valid hash, has a non-hex-digit.
-        t_nohash!("_ZN3foo17hg5af221e174051e9E", "foo::hg5af221e174051e9");
-    }
-
-    #[test]
-    fn demangle_thinlto() {
-        // One element, no hash.
-        t!("_ZN3fooE.llvm.9D1C9369", "foo");
-        t!("_ZN3fooE.llvm.9D1C9369@@16", "foo");
-        t_nohash!(
-            "_ZN9backtrace3foo17hbb467fcdaea5d79bE.llvm.A5310EB9",
-            "backtrace::foo"
-        );
-    }
-
-    #[test]
-    fn demangle_llvm_ir_branch_labels() {
-        t!("_ZN4core5slice77_$LT$impl$u20$core..ops..index..IndexMut$LT$I$GT$$u20$for$u20$$u5b$T$u5d$$GT$9index_mut17haf9727c2edfbc47bE.exit.i.i", "core::slice::<impl core::ops::index::IndexMut<I> for [T]>::index_mut::haf9727c2edfbc47b.exit.i.i");
-        t_nohash!("_ZN4core5slice77_$LT$impl$u20$core..ops..index..IndexMut$LT$I$GT$$u20$for$u20$$u5b$T$u5d$$GT$9index_mut17haf9727c2edfbc47bE.exit.i.i", "core::slice::<impl core::ops::index::IndexMut<I> for [T]>::index_mut.exit.i.i");
-    }
-
-    #[test]
-    fn demangle_ignores_suffix_that_doesnt_look_like_a_symbol() {
-        t_err!("_ZN3fooE.llvm moocow");
-    }
-
-    #[test]
-    fn dont_panic() {
-        super::demangle("_ZN2222222222222222222222EE").to_string();
-        super::demangle("_ZN5*70527e27.ll34csaғE").to_string();
-        super::demangle("_ZN5*70527a54.ll34_$b.1E").to_string();
-        super::demangle(
-            "\
-             _ZN5~saäb4e\n\
-             2734cOsbE\n\
-             5usage20h)3\0\0\0\0\0\0\07e2734cOsbE\
-             ",
-        )
-        .to_string();
-    }
-
-    #[test]
-    fn invalid_no_chop() {
-        t_err!("_ZNfooE");
-    }
-
-    #[test]
-    fn handle_assoc_types() {
-        t!("_ZN151_$LT$alloc..boxed..Box$LT$alloc..boxed..FnBox$LT$A$C$$u20$Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$9call_once17h69e8f44b3723e1caE", "<alloc::boxed::Box<alloc::boxed::FnBox<A, Output=R> + 'a> as core::ops::function::FnOnce<A>>::call_once::h69e8f44b3723e1ca");
-    }
-
-    #[test]
-    fn handle_bang() {
-        t!(
-            "_ZN88_$LT$core..result..Result$LT$$u21$$C$$u20$E$GT$$u20$as$u20$std..process..Termination$GT$6report17hfc41d0da4a40b3e8E",
-            "<core::result::Result<!, E> as std::process::Termination>::report::hfc41d0da4a40b3e8"
-        );
-    }
-
-    #[test]
-    fn limit_recursion() {
-        assert_contains!(
-            super::demangle("_RNvB_1a").to_string(),
-            "{recursion limit reached}"
-        );
-        assert_contains!(
-            super::demangle("_RMC0RB2_").to_string(),
-            "{recursion limit reached}"
-        );
-    }
-
-    #[test]
-    fn limit_output() {
-        assert_ends_with!(
-            super::demangle("RYFG_FGyyEvRYFF_EvRYFFEvERLB_B_B_ERLRjB_B_B_").to_string(),
-            "{size limit reached}"
-        );
-        // NOTE(eddyb) somewhat reduced version of the above, effectively
-        // `<for<...> fn()>` with a larger number of lifetimes in `...`.
-        assert_ends_with!(
-            super::demangle("_RMC0FGZZZ_Eu").to_string(),
-            "{size limit reached}"
-        );
-    }
-
-    #[cfg(feature = "std")]
-    fn demangle_str(input: &str) -> String {
-        let mut output = Vec::new();
-        super::demangle_line(input, &mut output, false);
-        String::from_utf8(output).unwrap()
-    }
-
-    #[test]
-    #[cfg(feature = "std")]
-    fn find_multiple() {
-        assert_eq!(
-            demangle_str("_ZN3fooE.llvm moocow _ZN3fooE.llvm"),
-            "foo.llvm moocow foo.llvm"
-        );
-    }
-
-    #[test]
-    #[cfg(feature = "std")]
-    fn interleaved_new_legacy() {
-        assert_eq!(
-            demangle_str("_ZN3fooE.llvm moocow _RNvMNtNtNtNtCs8a2262Dv4r_3mio3sys4unix8selector5epollNtB2_8Selector6select _ZN3fooE.llvm"),
-            "foo.llvm moocow <mio::sys::unix::selector::epoll::Selector>::select foo.llvm"
-        );
-    }
-}