refactor: remove cedar

5 files changed, 0 insertions, 849 deletions

diff --git a/vendor/string_cache/src/atom.rs b/vendor/string_cache/src/atom.rs
deleted file mode 100644
index 5a8aa7f0..00000000
--- a/vendor/string_cache/src/atom.rs
+++ /dev/null
@@ -1,415 +0,0 @@
-// Copyright 2014 The Servo Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use crate::dynamic_set::{dynamic_set, Entry};
-use crate::static_sets::StaticAtomSet;
-use debug_unreachable::debug_unreachable;
-
-use std::borrow::Cow;
-use std::cmp::Ordering::{self, Equal};
-use std::fmt;
-use std::hash::{Hash, Hasher};
-use std::marker::PhantomData;
-use std::mem;
-use std::num::NonZeroU64;
-use std::ops;
-use std::slice;
-use std::str;
-use std::sync::atomic::Ordering::SeqCst;
-
-const DYNAMIC_TAG: u8 = 0b_00;
-const INLINE_TAG: u8 = 0b_01; // len in upper nybble
-const STATIC_TAG: u8 = 0b_10;
-const TAG_MASK: u64 = 0b_11;
-const LEN_OFFSET: u64 = 4;
-const LEN_MASK: u64 = 0xF0;
-
-const MAX_INLINE_LEN: usize = 7;
-const STATIC_SHIFT_BITS: usize = 32;
-
-/// Represents a string that has been interned.
-///
-/// While the type definition for `Atom` indicates that it generic on a particular
-/// implementation of an atom set, you don't need to worry about this.  Atoms can be static
-/// and come from a `StaticAtomSet` generated by the `string_cache_codegen` crate, or they
-/// can be dynamic and created by you on an `EmptyStaticAtomSet`.
-///
-/// `Atom` implements `Clone` but not `Copy`, since internally atoms are reference-counted;
-/// this means that you may need to `.clone()` an atom to keep copies to it in different
-/// places, or when passing it to a function that takes an `Atom` rather than an `&Atom`.
-///
-/// ## Creating an atom at runtime
-///
-/// If you use `string_cache_codegen` to generate a precomputed list of atoms, your code
-/// may then do something like read data from somewhere and extract tokens that need to be
-/// compared to the atoms.  In this case, you can use `Atom::from(&str)` or
-/// `Atom::from(String)`.  These create a reference-counted atom which will be
-/// automatically freed when all references to it are dropped.
-///
-/// This means that your application can safely have a loop which tokenizes data, creates
-/// atoms from the tokens, and compares the atoms to a predefined set of keywords, without
-/// running the risk of arbitrary memory consumption from creating large numbers of atoms —
-/// as long as your application does not store clones of the atoms it creates along the
-/// way.
-///
-/// For example, the following is safe and will not consume arbitrary amounts of memory:
-///
-/// ```ignore
-/// let untrusted_data = "large amounts of text ...";
-///
-/// for token in untrusted_data.split_whitespace() {
-///     let atom = Atom::from(token); // interns the string
-///
-///     if atom == Atom::from("keyword") {
-///         // handle that keyword
-///     } else if atom == Atom::from("another_keyword") {
-///         // handle that keyword
-///     } else {
-///         println!("unknown keyword");
-///     }
-/// } // atom is dropped here, so it is not kept around in memory
-/// ```
-#[derive(PartialEq, Eq)]
-// NOTE: Deriving PartialEq requires that a given string must always be interned the same way.
-pub struct Atom<Static> {
-    unsafe_data: NonZeroU64,
-    phantom: PhantomData<Static>,
-}
-
-// This isn't really correct as the Atoms can technically take up space. But I guess it's ok
-// as it is possible to measure the size of the atom set separately/
-#[cfg(feature = "malloc_size_of")]
-impl<Static: StaticAtomSet> malloc_size_of::MallocSizeOf for Atom<Static> {
-    fn size_of(&self, _ops: &mut malloc_size_of::MallocSizeOfOps) -> usize {
-        0
-    }
-}
-
-// FIXME: bound removed from the struct definition before of this error for pack_static:
-// "error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable"
-// https://github.com/rust-lang/rust/issues/57563
-impl<Static> Atom<Static> {
-    /// For the atom!() macros
-    #[inline(always)]
-    #[doc(hidden)]
-    pub const fn pack_static(n: u32) -> Self {
-        Self {
-            unsafe_data: unsafe {
-                // STATIC_TAG ensures this is non-zero
-                NonZeroU64::new_unchecked((STATIC_TAG as u64) | ((n as u64) << STATIC_SHIFT_BITS))
-            },
-            phantom: PhantomData,
-        }
-    }
-
-    /// For the atom!() macros
-    #[inline(always)]
-    #[doc(hidden)]
-    pub const fn pack_inline(mut n: u64, len: u8) -> Self {
-        if cfg!(target_endian = "big") {
-            // Reverse order of top 7 bytes.
-            // Bottom 8 bits of `n` are zero, and we need that to remain so.
-            // String data is stored in top 7 bytes, tag and length in bottom byte.
-            n = n.to_le() << 8;
-        }
-
-        let data: u64 = (INLINE_TAG as u64) | ((len as u64) << LEN_OFFSET) | n;
-        Self {
-            // INLINE_TAG ensures this is never zero
-            unsafe_data: unsafe { NonZeroU64::new_unchecked(data) },
-            phantom: PhantomData,
-        }
-    }
-
-    fn tag(&self) -> u8 {
-        (self.unsafe_data.get() & TAG_MASK) as u8
-    }
-}
-
-impl<Static: StaticAtomSet> Atom<Static> {
-    /// Return the internal representation. For testing.
-    #[doc(hidden)]
-    pub fn unsafe_data(&self) -> u64 {
-        self.unsafe_data.get()
-    }
-
-    /// Return true if this is a static Atom. For testing.
-    #[doc(hidden)]
-    pub fn is_static(&self) -> bool {
-        self.tag() == STATIC_TAG
-    }
-
-    /// Return true if this is a dynamic Atom. For testing.
-    #[doc(hidden)]
-    pub fn is_dynamic(&self) -> bool {
-        self.tag() == DYNAMIC_TAG
-    }
-
-    /// Return true if this is an inline Atom. For testing.
-    #[doc(hidden)]
-    pub fn is_inline(&self) -> bool {
-        self.tag() == INLINE_TAG
-    }
-
-    fn static_index(&self) -> u64 {
-        self.unsafe_data.get() >> STATIC_SHIFT_BITS
-    }
-
-    /// Get the hash of the string as it is stored in the set.
-    pub fn get_hash(&self) -> u32 {
-        match self.tag() {
-            DYNAMIC_TAG => {
-                let entry = self.unsafe_data.get() as *const Entry;
-                unsafe { (*entry).hash }
-            }
-            STATIC_TAG => Static::get().hashes[self.static_index() as usize],
-            INLINE_TAG => {
-                let data = self.unsafe_data.get();
-                // This may or may not be great...
-                ((data >> 32) ^ data) as u32
-            }
-            _ => unsafe { debug_unreachable!() },
-        }
-    }
-
-    pub fn try_static(string_to_add: &str) -> Option<Self> {
-        Self::try_static_internal(string_to_add).ok()
-    }
-
-    fn try_static_internal(string_to_add: &str) -> Result<Self, phf_shared::Hashes> {
-        let static_set = Static::get();
-        let hash = phf_shared::hash(&*string_to_add, &static_set.key);
-        let index = phf_shared::get_index(&hash, static_set.disps, static_set.atoms.len());
-
-        if static_set.atoms[index as usize] == string_to_add {
-            Ok(Self::pack_static(index))
-        } else {
-            Err(hash)
-        }
-    }
-}
-
-impl<Static: StaticAtomSet> Default for Atom<Static> {
-    #[inline]
-    fn default() -> Self {
-        Atom::pack_static(Static::empty_string_index())
-    }
-}
-
-impl<Static: StaticAtomSet> Hash for Atom<Static> {
-    #[inline]
-    fn hash<H>(&self, state: &mut H)
-    where
-        H: Hasher,
-    {
-        state.write_u32(self.get_hash())
-    }
-}
-
-impl<'a, Static: StaticAtomSet> From<Cow<'a, str>> for Atom<Static> {
-    fn from(string_to_add: Cow<'a, str>) -> Self {
-        let len = string_to_add.len();
-        if len == 0 {
-            Self::pack_static(Static::empty_string_index())
-        } else if len <= MAX_INLINE_LEN {
-            let mut data: u64 = (INLINE_TAG as u64) | ((len as u64) << LEN_OFFSET);
-            {
-                let dest = inline_atom_slice_mut(&mut data);
-                dest[..len].copy_from_slice(string_to_add.as_bytes());
-            }
-            Atom {
-                // INLINE_TAG ensures this is never zero
-                unsafe_data: unsafe { NonZeroU64::new_unchecked(data) },
-                phantom: PhantomData,
-            }
-        } else {
-            Self::try_static_internal(&*string_to_add).unwrap_or_else(|hash| {
-                let ptr: std::ptr::NonNull<Entry> = dynamic_set().insert(string_to_add, hash.g);
-                let data = ptr.as_ptr() as u64;
-                debug_assert!(0 == data & TAG_MASK);
-                Atom {
-                    // The address of a ptr::NonNull is non-zero
-                    unsafe_data: unsafe { NonZeroU64::new_unchecked(data) },
-                    phantom: PhantomData,
-                }
-            })
-        }
-    }
-}
-
-impl<Static: StaticAtomSet> Clone for Atom<Static> {
-    #[inline(always)]
-    fn clone(&self) -> Self {
-        if self.tag() == DYNAMIC_TAG {
-            let entry = self.unsafe_data.get() as *const Entry;
-            unsafe { &*entry }.ref_count.fetch_add(1, SeqCst);
-        }
-        Atom { ..*self }
-    }
-}
-
-impl<Static> Drop for Atom<Static> {
-    #[inline]
-    fn drop(&mut self) {
-        if self.tag() == DYNAMIC_TAG {
-            let entry = self.unsafe_data.get() as *const Entry;
-            if unsafe { &*entry }.ref_count.fetch_sub(1, SeqCst) == 1 {
-                drop_slow(self)
-            }
-        }
-
-        // Out of line to guide inlining.
-        fn drop_slow<Static>(this: &mut Atom<Static>) {
-            dynamic_set().remove(this.unsafe_data.get() as *mut Entry);
-        }
-    }
-}
-
-impl<Static: StaticAtomSet> ops::Deref for Atom<Static> {
-    type Target = str;
-
-    #[inline]
-    fn deref(&self) -> &str {
-        unsafe {
-            match self.tag() {
-                DYNAMIC_TAG => {
-                    let entry = self.unsafe_data.get() as *const Entry;
-                    &(*entry).string
-                }
-                INLINE_TAG => {
-                    let len = (self.unsafe_data() & LEN_MASK) >> LEN_OFFSET;
-                    debug_assert!(len as usize <= MAX_INLINE_LEN);
-                    let src = inline_atom_slice(&self.unsafe_data);
-                    str::from_utf8_unchecked(src.get_unchecked(..(len as usize)))
-                }
-                STATIC_TAG => Static::get().atoms[self.static_index() as usize],
-                _ => debug_unreachable!(),
-            }
-        }
-    }
-}
-
-impl<Static: StaticAtomSet> fmt::Debug for Atom<Static> {
-    #[inline]
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        let ty_str = unsafe {
-            match self.tag() {
-                DYNAMIC_TAG => "dynamic",
-                INLINE_TAG => "inline",
-                STATIC_TAG => "static",
-                _ => debug_unreachable!(),
-            }
-        };
-
-        write!(f, "Atom('{}' type={})", &*self, ty_str)
-    }
-}
-
-impl<Static: StaticAtomSet> PartialOrd for Atom<Static> {
-    #[inline]
-    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        if self.unsafe_data == other.unsafe_data {
-            return Some(Equal);
-        }
-        self.as_ref().partial_cmp(other.as_ref())
-    }
-}
-
-impl<Static: StaticAtomSet> Ord for Atom<Static> {
-    #[inline]
-    fn cmp(&self, other: &Self) -> Ordering {
-        if self.unsafe_data == other.unsafe_data {
-            return Equal;
-        }
-        self.as_ref().cmp(other.as_ref())
-    }
-}
-
-// AsciiExt requires mutating methods, so we just implement the non-mutating ones.
-// We don't need to implement is_ascii because there's no performance improvement
-// over the one from &str.
-impl<Static: StaticAtomSet> Atom<Static> {
-    fn from_mutated_str<F: FnOnce(&mut str)>(s: &str, f: F) -> Self {
-        let mut buffer = mem::MaybeUninit::<[u8; 64]>::uninit();
-        let buffer = unsafe { &mut *buffer.as_mut_ptr() };
-
-        if let Some(buffer_prefix) = buffer.get_mut(..s.len()) {
-            buffer_prefix.copy_from_slice(s.as_bytes());
-            let as_str = unsafe { ::std::str::from_utf8_unchecked_mut(buffer_prefix) };
-            f(as_str);
-            Atom::from(&*as_str)
-        } else {
-            let mut string = s.to_owned();
-            f(&mut string);
-            Atom::from(string)
-        }
-    }
-
-    /// Like [`to_ascii_uppercase`].
-    ///
-    /// [`to_ascii_uppercase`]: https://doc.rust-lang.org/std/ascii/trait.AsciiExt.html#tymethod.to_ascii_uppercase
-    pub fn to_ascii_uppercase(&self) -> Self {
-        for (i, b) in self.bytes().enumerate() {
-            if let b'a'..=b'z' = b {
-                return Atom::from_mutated_str(self, |s| s[i..].make_ascii_uppercase());
-            }
-        }
-        self.clone()
-    }
-
-    /// Like [`to_ascii_lowercase`].
-    ///
-    /// [`to_ascii_lowercase`]: https://doc.rust-lang.org/std/ascii/trait.AsciiExt.html#tymethod.to_ascii_lowercase
-    pub fn to_ascii_lowercase(&self) -> Self {
-        for (i, b) in self.bytes().enumerate() {
-            if let b'A'..=b'Z' = b {
-                return Atom::from_mutated_str(self, |s| s[i..].make_ascii_lowercase());
-            }
-        }
-        self.clone()
-    }
-
-    /// Like [`eq_ignore_ascii_case`].
-    ///
-    /// [`eq_ignore_ascii_case`]: https://doc.rust-lang.org/std/ascii/trait.AsciiExt.html#tymethod.eq_ignore_ascii_case
-    pub fn eq_ignore_ascii_case(&self, other: &Self) -> bool {
-        (self == other) || self.eq_str_ignore_ascii_case(&**other)
-    }
-
-    /// Like [`eq_ignore_ascii_case`], but takes an unhashed string as `other`.
-    ///
-    /// [`eq_ignore_ascii_case`]: https://doc.rust-lang.org/std/ascii/trait.AsciiExt.html#tymethod.eq_ignore_ascii_case
-    pub fn eq_str_ignore_ascii_case(&self, other: &str) -> bool {
-        (&**self).eq_ignore_ascii_case(other)
-    }
-}
-
-#[inline(always)]
-fn inline_atom_slice(x: &NonZeroU64) -> &[u8] {
-        let x: *const NonZeroU64 = x;
-        let mut data = x as *const u8;
-        // All except the lowest byte, which is first in little-endian, last in big-endian.
-        if cfg!(target_endian = "little") {
-            data = unsafe { data.offset(1) };
-        }
-        let len = 7;
-        unsafe { slice::from_raw_parts(data, len) }   
-}
-
-#[inline(always)]
-fn inline_atom_slice_mut(x: &mut u64) -> &mut [u8] {   
-        let x: *mut u64 = x;
-        let mut data = x as *mut u8;
-        // All except the lowest byte, which is first in little-endian, last in big-endian.
-        if cfg!(target_endian = "little") {
-            data = unsafe { data.offset(1) };
-        }
-        let len = 7;
-        unsafe { slice::from_raw_parts_mut(data, len) }
-}
diff --git a/vendor/string_cache/src/dynamic_set.rs b/vendor/string_cache/src/dynamic_set.rs
deleted file mode 100644
index 4442b4da..00000000
--- a/vendor/string_cache/src/dynamic_set.rs
+++ /dev/null
@@ -1,112 +0,0 @@
-// Copyright 2014 The Servo Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use parking_lot::Mutex;
-use std::borrow::Cow;
-use std::mem;
-use std::ptr::NonNull;
-use std::sync::atomic::AtomicIsize;
-use std::sync::atomic::Ordering::SeqCst;
-use std::sync::OnceLock;
-
-const NB_BUCKETS: usize = 1 << 12; // 4096
-const BUCKET_MASK: u32 = (1 << 12) - 1;
-
-pub(crate) struct Set {
-    buckets: Box<[Mutex<Option<Box<Entry>>>]>,
-}
-
-pub(crate) struct Entry {
-    pub(crate) string: Box<str>,
-    pub(crate) hash: u32,
-    pub(crate) ref_count: AtomicIsize,
-    next_in_bucket: Option<Box<Entry>>,
-}
-
-// Addresses are a multiples of this,
-// and therefore have have TAG_MASK bits unset, available for tagging.
-pub(crate) const ENTRY_ALIGNMENT: usize = 4;
-
-#[test]
-fn entry_alignment_is_sufficient() {
-    assert!(mem::align_of::<Entry>() >= ENTRY_ALIGNMENT);
-}
-
-pub(crate) fn dynamic_set() -> &'static Set {
-    // NOTE: Using const initialization for buckets breaks the small-stack test.
-    // ```
-    // // buckets: [Mutex<Option<Box<Entry>>>; NB_BUCKETS],
-    // const MUTEX: Mutex<Option<Box<Entry>>> = Mutex::new(None);
-    // let buckets = Box::new([MUTEX; NB_BUCKETS]);
-    // ```
-    static DYNAMIC_SET: OnceLock<Set> = OnceLock::new();
-
-    DYNAMIC_SET.get_or_init(|| {
-        let buckets = (0..NB_BUCKETS).map(|_| Mutex::new(None)).collect();
-        Set { buckets }
-    })
-}
-
-impl Set {
-    pub(crate) fn insert(&self, string: Cow<str>, hash: u32) -> NonNull<Entry> {
-        let bucket_index = (hash & BUCKET_MASK) as usize;
-        let mut linked_list = self.buckets[bucket_index].lock();
-
-        {
-            let mut ptr: Option<&mut Box<Entry>> = linked_list.as_mut();
-
-            while let Some(entry) = ptr.take() {
-                if entry.hash == hash && *entry.string == *string {
-                    if entry.ref_count.fetch_add(1, SeqCst) > 0 {
-                        return NonNull::from(&mut **entry);
-                    }
-                    // Uh-oh. The pointer's reference count was zero, which means someone may try
-                    // to free it. (Naive attempts to defend against this, for example having the
-                    // destructor check to see whether the reference count is indeed zero, don't
-                    // work due to ABA.) Thus we need to temporarily add a duplicate string to the
-                    // list.
-                    entry.ref_count.fetch_sub(1, SeqCst);
-                    break;
-                }
-                ptr = entry.next_in_bucket.as_mut();
-            }
-        }
-        debug_assert!(mem::align_of::<Entry>() >= ENTRY_ALIGNMENT);
-        let string = string.into_owned();
-        let mut entry = Box::new(Entry {
-            next_in_bucket: linked_list.take(),
-            hash,
-            ref_count: AtomicIsize::new(1),
-            string: string.into_boxed_str(),
-        });
-        let ptr = NonNull::from(&mut *entry);
-        *linked_list = Some(entry);
-        ptr
-    }
-
-    pub(crate) fn remove(&self, ptr: *mut Entry) {
-        let value: &Entry = unsafe { &*ptr };
-        let bucket_index = (value.hash & BUCKET_MASK) as usize;
-
-        let mut linked_list = self.buckets[bucket_index].lock();
-        debug_assert!(value.ref_count.load(SeqCst) == 0);
-        let mut current: &mut Option<Box<Entry>> = &mut linked_list;
-
-        while let Some(entry_ptr) = current.as_mut() {
-            let entry_ptr: *mut Entry = &mut **entry_ptr;
-            if entry_ptr == ptr {
-                mem::drop(mem::replace(current, unsafe {
-                    (*entry_ptr).next_in_bucket.take()
-                }));
-                break;
-            }
-            current = unsafe { &mut (*entry_ptr).next_in_bucket };
-        }
-    }
-}
diff --git a/vendor/string_cache/src/lib.rs b/vendor/string_cache/src/lib.rs
deleted file mode 100644
index 441cb4ef..00000000
--- a/vendor/string_cache/src/lib.rs
+++ /dev/null
@@ -1,139 +0,0 @@
-// Copyright 2014 The Servo Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//!
-//! A library for interning things that are `AsRef<str>`.
-//!
-//! Some strings may be interned at compile time using the `string-cache-codegen` crate, or the
-//! `EmptyStaticAtomSet` may be used that has no compile-time interned strings. An `Atom` is an
-//! interned string for a given set (either `EmptyStaticAtomSet` or a generated `StaticAtomSet`).
-//!
-//! Generated `Atom`s will have assocated macros to intern static strings at compile-time.
-//!
-//! # Examples
-//!
-//! Here are two examples, one with compile-time `Atom`s, and one without.
-//!
-//! ## With compile-time atoms
-//!
-//! In `Cargo.toml`:
-//! ```toml
-//! [dependencies]
-//! string_cache = "0.8"
-//!
-//! [dev-dependencies]
-//! string_cache_codegen = "0.5"
-//! ```
-//!
-//! In `build.rs`:
-//!
-//! ```ignore
-//! extern crate string_cache_codegen;
-//!
-//! use std::env;
-//! use std::path::Path;
-//!
-//! fn main() {
-//!     string_cache_codegen::AtomType::new("foo::FooAtom", "foo_atom!")
-//!         .atoms(&["foo", "bar"])
-//!         .write_to_file(&Path::new(&env::var("OUT_DIR").unwrap()).join("foo_atom.rs"))
-//!         .unwrap()
-//! }
-//! ```
-//!
-//! In `lib.rs`:
-//!
-//! ```ignore
-//! extern crate string_cache;
-//!
-//! mod foo {
-//!     include!(concat!(env!("OUT_DIR"), "/foo_atom.rs"));
-//! }
-//!
-//! fn use_the_atom(t: &str) {
-//!     match *t {
-//!         foo_atom!("foo") => println!("Found foo!"),
-//!         foo_atom!("bar") => println!("Found bar!"),
-//!         // foo_atom!("baz") => println!("Found baz!"), - would be a compile time error
-//!         _ => {
-//!             println!("String not interned");
-//!             // We can intern strings at runtime as well
-//!             foo::FooAtom::from(t)
-//!         }
-//!     }
-//! }
-//! ```
-//!
-//! ## No compile-time atoms
-//!
-//! ```
-//! # extern crate string_cache;
-//! use string_cache::DefaultAtom;
-//!
-//! # fn main() {
-//! let mut interned_stuff = Vec::new();
-//! let text = "here is a sentence of text that will be tokenised and
-//!             interned and some repeated tokens is of text and";
-//! for word in text.split_whitespace() {
-//!     let seen_before = interned_stuff.iter()
-//!         // We can use impl PartialEq<T> where T is anything string-like
-//!         // to compare to interned strings to either other interned strings,
-//!         // or actual strings  Comparing two interned strings is very fast
-//!         // (normally a single cpu operation).
-//!         .filter(|interned_word| interned_word == &word)
-//!         .count();
-//!     if seen_before > 0 {
-//!         println!(r#"Seen the word "{}" {} times"#, word, seen_before);
-//!     } else {
-//!         println!(r#"Not seen the word "{}" before"#, word);
-//!     }
-//!     // We use the impl From<(Cow<'a, str>, or &'a str, or String)> for
-//!     // Atom<Static> to intern a new string.
-//!     interned_stuff.push(DefaultAtom::from(word));
-//! }
-//! # }
-//! ```
-//!
-
-#![cfg_attr(test, deny(warnings))]
-
-// Types, such as Atom, that impl Hash must follow the hash invariant: if two objects match
-// with PartialEq, they must also have the same Hash. Clippy warns on types that derive one while
-// manually impl-ing the other, because it seems easy for the two to drift apart, causing the
-// invariant to be violated.
-//
-// But Atom is a newtype over NonZeroU64, and probably always will be, since cheap comparisons and
-// copying are this library's purpose. So we know what the PartialEq comparison is going to do.
-//
-// The `get_hash` function, seen in `atom.rs`, consults that number, plus the global string interner
-// tables. The only way for the resulting hash for two Atoms with the same inner 64-bit number to
-// differ would be if the table entry changed between invocations, and that would be really bad.
-#![allow(clippy::derive_hash_xor_eq)]
-
-mod atom;
-mod dynamic_set;
-mod static_sets;
-mod trivial_impls;
-
-pub use atom::Atom;
-pub use static_sets::{EmptyStaticAtomSet, PhfStrSet, StaticAtomSet};
-
-/// Use this if you don’t care about static atoms.
-pub type DefaultAtom = Atom<EmptyStaticAtomSet>;
-
-// Some minor tests of internal layout here.
-// See ../integration-tests for much more.
-
-/// Guard against accidental changes to the sizes of things.
-#[test]
-fn assert_sizes() {
-    use std::mem::size_of;
-    assert_eq!(size_of::<DefaultAtom>(), 8);
-    assert_eq!(size_of::<Option<DefaultAtom>>(), size_of::<DefaultAtom>(),);
-}
diff --git a/vendor/string_cache/src/static_sets.rs b/vendor/string_cache/src/static_sets.rs
deleted file mode 100644
index f7f1799f..00000000
--- a/vendor/string_cache/src/static_sets.rs
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright 2014 The Servo Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-/// A static `PhfStrSet`
-///
-/// This trait is implemented by static sets of interned strings generated using
-/// `string_cache_codegen`, and `EmptyStaticAtomSet` for when strings will be added dynamically.
-///
-/// It is used by the methods of [`Atom`] to check if a string is present in the static set.
-///
-/// [`Atom`]: struct.Atom.html
-pub trait StaticAtomSet: Ord {
-    /// Get the location of the static string set in the binary.
-    fn get() -> &'static PhfStrSet;
-    /// Get the index of the empty string, which is in every set and is used for `Atom::default`.
-    fn empty_string_index() -> u32;
-}
-
-/// A string set created using a [perfect hash function], specifically
-/// [Hash, Displace and Compress].
-///
-/// See the CHD document for the meaning of the struct fields.
-///
-/// [perfect hash function]: https://en.wikipedia.org/wiki/Perfect_hash_function
-/// [Hash, Displace and Compress]: http://cmph.sourceforge.net/papers/esa09.pdf
-pub struct PhfStrSet {
-    #[doc(hidden)]
-    pub key: u64,
-    #[doc(hidden)]
-    pub disps: &'static [(u32, u32)],
-    #[doc(hidden)]
-    pub atoms: &'static [&'static str],
-    #[doc(hidden)]
-    pub hashes: &'static [u32],
-}
-
-/// An empty static atom set for when only dynamic strings will be added
-#[derive(PartialEq, Eq, PartialOrd, Ord)]
-pub struct EmptyStaticAtomSet;
-
-impl StaticAtomSet for EmptyStaticAtomSet {
-    fn get() -> &'static PhfStrSet {
-        // The name is a lie: this set is not empty (it contains the empty string)
-        // but that’s only to avoid divisions by zero in rust-phf.
-        static SET: PhfStrSet = PhfStrSet {
-            key: 0,
-            disps: &[(0, 0)],
-            atoms: &[""],
-            // "" SipHash'd, and xored with u64_hash_to_u32.
-            hashes: &[0x3ddddef3],
-        };
-        &SET
-    }
-
-    fn empty_string_index() -> u32 {
-        0
-    }
-}
diff --git a/vendor/string_cache/src/trivial_impls.rs b/vendor/string_cache/src/trivial_impls.rs
deleted file mode 100644
index 960dde0d..00000000
--- a/vendor/string_cache/src/trivial_impls.rs
+++ /dev/null
@@ -1,119 +0,0 @@
-// Copyright 2014 The Servo Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use crate::{Atom, StaticAtomSet};
-#[cfg(feature = "serde_support")]
-use serde::{Deserialize, Deserializer, Serialize, Serializer};
-use std::borrow::Cow;
-use std::fmt;
-
-impl<Static: StaticAtomSet> ::precomputed_hash::PrecomputedHash for Atom<Static> {
-    fn precomputed_hash(&self) -> u32 {
-        self.get_hash()
-    }
-}
-
-impl<'a, Static: StaticAtomSet> From<&'a Atom<Static>> for Atom<Static> {
-    fn from(atom: &'a Self) -> Self {
-        atom.clone()
-    }
-}
-
-impl<Static: StaticAtomSet> PartialEq<str> for Atom<Static> {
-    fn eq(&self, other: &str) -> bool {
-        &self[..] == other
-    }
-}
-
-impl<Static: StaticAtomSet> PartialEq<Atom<Static>> for str {
-    fn eq(&self, other: &Atom<Static>) -> bool {
-        self == &other[..]
-    }
-}
-
-impl<Static: StaticAtomSet> PartialEq<String> for Atom<Static> {
-    fn eq(&self, other: &String) -> bool {
-        self[..] == other[..]
-    }
-}
-
-impl<'a, Static: StaticAtomSet> From<&'a str> for Atom<Static> {
-    #[inline]
-    fn from(string_to_add: &str) -> Self {
-        Atom::from(Cow::Borrowed(string_to_add))
-    }
-}
-
-impl<Static: StaticAtomSet> From<String> for Atom<Static> {
-    #[inline]
-    fn from(string_to_add: String) -> Self {
-        Atom::from(Cow::Owned(string_to_add))
-    }
-}
-
-impl<Static: StaticAtomSet> fmt::Display for Atom<Static> {
-    #[inline]
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        <str as fmt::Display>::fmt(self, f)
-    }
-}
-
-impl<Static: StaticAtomSet> AsRef<str> for Atom<Static> {
-    fn as_ref(&self) -> &str {
-        self
-    }
-}
-
-#[cfg(feature = "serde_support")]
-impl<Static: StaticAtomSet> Serialize for Atom<Static> {
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        let string: &str = self.as_ref();
-        string.serialize(serializer)
-    }
-}
-
-#[cfg(feature = "serde_support")]
-impl<'a, Static: StaticAtomSet> Deserialize<'a> for Atom<Static> {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'a>,
-    {
-        use serde::de;
-        use std::marker::PhantomData;
-
-        struct AtomVisitor<Static: StaticAtomSet>(PhantomData<Static>);
-
-        impl<'de, Static: StaticAtomSet> de::Visitor<'de> for AtomVisitor<Static> {
-            type Value = Atom<Static>;
-
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                write!(formatter, "an Atom")
-            }
-
-            fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
-            where
-                E: de::Error,
-            {
-                Ok(Atom::from(v))
-            }
-
-            fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
-            where
-                E: de::Error,
-            {
-                Ok(Atom::from(v))
-            }
-        }
-
-        deserializer.deserialize_str(AtomVisitor(PhantomData))
-    }
-}