Deleted vendor folder

1 files changed, 0 insertions, 392 deletions

diff --git a/vendor/rustc-demangle/src/legacy.rs b/vendor/rustc-demangle/src/legacy.rs
deleted file mode 100644
index d55f3a1..0000000
--- a/vendor/rustc-demangle/src/legacy.rs
+++ /dev/null
@@ -1,392 +0,0 @@
-use core::char;
-use core::fmt;
-
-/// Representation of a demangled symbol name.
-pub struct Demangle<'a> {
-    inner: &'a str,
-    /// The number of ::-separated elements in the original name.
-    elements: usize,
-}
-
-/// De-mangles a Rust symbol into a more readable version
-///
-/// All Rust symbols by default are mangled as they contain characters that
-/// cannot be represented in all object files. The mangling mechanism is similar
-/// to C++'s, but Rust has a few specifics to handle items like lifetimes in
-/// symbols.
-///
-/// 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");
-/// ```
-
-// All Rust symbols are in theory lists of "::"-separated identifiers. Some
-// assemblers, however, can't handle these characters in symbol names. To get
-// around this, we use C++-style mangling. The mangling method is:
-//
-// 1. Prefix the symbol with "_ZN"
-// 2. For each element of the path, emit the length plus the element
-// 3. End the path with "E"
-//
-// For example, "_ZN4testE" => "test" and "_ZN3foo3barE" => "foo::bar".
-//
-// We're the ones printing our backtraces, so we can't rely on anything else to
-// demangle our symbols. It's *much* nicer to look at demangled symbols, so
-// this function is implemented to give us nice pretty output.
-//
-// Note that this demangler isn't quite as fancy as it could be. We have lots
-// of other information in our symbols like hashes, version, type information,
-// etc. Additionally, this doesn't handle glue symbols at all.
-pub fn demangle(s: &str) -> Result<(Demangle, &str), ()> {
-    // First validate the symbol. If it doesn't look like anything we're
-    // expecting, we just print it literally. Note that we must handle non-Rust
-    // symbols because we could have any function in the backtrace.
-    let inner = if s.starts_with("_ZN") {
-        &s[3..]
-    } else if s.starts_with("ZN") {
-        // On Windows, dbghelp strips leading underscores, so we accept "ZN...E"
-        // form too.
-        &s[2..]
-    } else if s.starts_with("__ZN") {
-        // On OSX, symbols are prefixed with an extra _
-        &s[4..]
-    } else {
-        return Err(());
-    };
-
-    // only work with ascii text
-    if inner.bytes().any(|c| c & 0x80 != 0) {
-        return Err(());
-    }
-
-    let mut elements = 0;
-    let mut chars = inner.chars();
-    let mut c = chars.next().ok_or(())?;
-    while c != 'E' {
-        // Decode an identifier element's length.
-        if !c.is_digit(10) {
-            return Err(());
-        }
-        let mut len = 0usize;
-        while let Some(d) = c.to_digit(10) {
-            len = len
-                .checked_mul(10)
-                .and_then(|len| len.checked_add(d as usize))
-                .ok_or(())?;
-            c = chars.next().ok_or(())?;
-        }
-
-        // `c` already contains the first character of this identifier, skip it and
-        // all the other characters of this identifier, to reach the next element.
-        for _ in 0..len {
-            c = chars.next().ok_or(())?;
-        }
-
-        elements += 1;
-    }
-
-    Ok((Demangle { inner, elements }, chars.as_str()))
-}
-
-// Rust hashes are hex digits with an `h` prepended.
-fn is_rust_hash(s: &str) -> bool {
-    s.starts_with('h') && s[1..].chars().all(|c| c.is_digit(16))
-}
-
-impl<'a> fmt::Display for Demangle<'a> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        // Alright, let's do this.
-        let mut inner = self.inner;
-        for element in 0..self.elements {
-            let mut rest = inner;
-            while rest.chars().next().unwrap().is_digit(10) {
-                rest = &rest[1..];
-            }
-            let i: usize = inner[..(inner.len() - rest.len())].parse().unwrap();
-            inner = &rest[i..];
-            rest = &rest[..i];
-            // Skip printing the hash if alternate formatting
-            // was requested.
-            if f.alternate() && element + 1 == self.elements && is_rust_hash(&rest) {
-                break;
-            }
-            if element != 0 {
-                f.write_str("::")?;
-            }
-            if rest.starts_with("_$") {
-                rest = &rest[1..];
-            }
-            loop {
-                if rest.starts_with('.') {
-                    if let Some('.') = rest[1..].chars().next() {
-                        f.write_str("::")?;
-                        rest = &rest[2..];
-                    } else {
-                        f.write_str(".")?;
-                        rest = &rest[1..];
-                    }
-                } else if rest.starts_with('$') {
-                    let (escape, after_escape) = if let Some(end) = rest[1..].find('$') {
-                        (&rest[1..=end], &rest[end + 2..])
-                    } else {
-                        break;
-                    };
-
-                    // see src/librustc_codegen_utils/symbol_names/legacy.rs for these mappings
-                    let unescaped = match escape {
-                        "SP" => "@",
-                        "BP" => "*",
-                        "RF" => "&",
-                        "LT" => "<",
-                        "GT" => ">",
-                        "LP" => "(",
-                        "RP" => ")",
-                        "C" => ",",
-
-                        _ => {
-                            if escape.starts_with('u') {
-                                let digits = &escape[1..];
-                                let all_lower_hex = digits.chars().all(|c| match c {
-                                    '0'..='9' | 'a'..='f' => true,
-                                    _ => false,
-                                });
-                                let c = u32::from_str_radix(digits, 16)
-                                    .ok()
-                                    .and_then(char::from_u32);
-                                if let (true, Some(c)) = (all_lower_hex, c) {
-                                    // FIXME(eddyb) do we need to filter out control codepoints?
-                                    if !c.is_control() {
-                                        c.fmt(f)?;
-                                        rest = after_escape;
-                                        continue;
-                                    }
-                                }
-                            }
-                            break;
-                        }
-                    };
-                    f.write_str(unescaped)?;
-                    rest = after_escape;
-                } else if let Some(i) = rest.find(|c| c == '$' || c == '.') {
-                    f.write_str(&rest[..i])?;
-                    rest = &rest[i..];
-                } else {
-                    break;
-                }
-            }
-            f.write_str(rest)?;
-        }
-
-        Ok(())
-    }
-}
-
-#[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, $b:expr) => {{
-            assert_eq!(format!("{:#}", ::demangle($a)), $b);
-        }};
-    }
-
-    fn ok(sym: &str, expected: &str) -> bool {
-        match ::try_demangle(sym) {
-            Ok(s) => {
-                if s.to_string() == expected {
-                    true
-                } else {
-                    println!("\n{}\n!=\n{}\n", s, expected);
-                    false
-                }
-            }
-            Err(_) => {
-                println!("error demangling");
-                false
-            }
-        }
-    }
-
-    fn ok_err(sym: &str) -> bool {
-        match ::try_demangle(sym) {
-            Ok(_) => {
-                println!("succeeded in demangling");
-                false
-            }
-            Err(_) => ::demangle(sym).to_string() == sym,
-        }
-    }
-
-    #[test]
-    fn demangle() {
-        t_err!("test");
-        t!("_ZN4testE", "test");
-        t_err!("_ZN4test");
-        t!("_ZN4test1a2bcE", "test::a::bc");
-    }
-
-    #[test]
-    fn demangle_dollars() {
-        t!("_ZN4$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$9index_mut17haf9727c2edfbc47bE.exit.i.i", "core::slice::<impl core::ops::index::IndexMut<I> for [T]>::index_mut.exit.i.i");
-    }
-
-    #[test]
-    fn demangle_ignores_suffix_that_doesnt_look_like_a_symbol() {
-        t_err!("_ZN3fooE.llvm moocow");
-    }
-
-    #[test]
-    fn dont_panic() {
-        ::demangle("_ZN2222222222222222222222EE").to_string();
-        ::demangle("_ZN5*70527e27.ll34csaғE").to_string();
-        ::demangle("_ZN5*70527a54.ll34_$b.1E").to_string();
-        ::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$$u20$as$u20$std..process..Termination$GT$6report17hfc41d0da4a40b3e8E",
-            "<core::result::Result<!, E> as std::process::Termination>::report::hfc41d0da4a40b3e8"
-        );
-    }
-
-    #[test]
-    fn demangle_utf8_idents() {
-        t_nohash!(
-            "_ZN11utf8_idents157_$u10e1$$u10d0$$u10ed$$u10db$$u10d4$$u10da$$u10d0$$u10d3$_$u10d2$$u10d4$$u10db$$u10e0$$u10d8$$u10d4$$u10da$$u10d8$_$u10e1$$u10d0$$u10d3$$u10d8$$u10da$$u10d8$17h21634fd5714000aaE",
-            "utf8_idents::საჭმელად_გემრიელი_სადილი"
-        );
-    }
-
-    #[test]
-    fn demangle_issue_60925() {
-        t_nohash!(
-            "_ZN11issue_609253foo37Foo$LT$issue_60925..llv$u6d$..Foo$GT$3foo17h059a991a004536adE",
-            "issue_60925::foo::Foo<issue_60925::llvm::Foo>::foo"
-        );
-    }
-}