1 files changed, 0 insertions, 218 deletions
diff --git a/src/global_rng.rs b/src/global_rng.rs
deleted file mode 100644
index f994902..0000000
--- a/src/global_rng.rs
+++ /dev/null
@@ -1,218 +0,0 @@
-//! A global, thread-local random number generator.
-
-use crate::Rng;
-
-use std::cell::Cell;
-use std::ops::RangeBounds;
-
-// Chosen by fair roll of the dice.
-const DEFAULT_RNG_SEED: u64 = 0xef6f79ed30ba75a;
-
-impl Default for Rng {
-    /// Initialize the `Rng` from the system's random number generator.
-    ///
-    /// This is equivalent to [`Rng::new()`].
-    #[inline]
-    fn default() -> Rng {
-        Rng::new()
-    }
-}
-
-impl Rng {
-    /// Creates a new random number generator.
-    #[inline]
-    pub fn new() -> Rng {
-        try_with_rng(Rng::fork).unwrap_or_else(|_| Rng::with_seed(0x4d595df4d0f33173))
-    }
-}
-
-thread_local! {
-    static RNG: Cell<Rng> = Cell::new(Rng(random_seed().unwrap_or(DEFAULT_RNG_SEED)));
-}
-
-/// Run an operation with the current thread-local generator.
-#[inline]
-fn with_rng<R>(f: impl FnOnce(&mut Rng) -> R) -> R {
-    RNG.with(|rng| {
-        let current = rng.replace(Rng(0));
-
-        let mut restore = RestoreOnDrop { rng, current };
-
-        f(&mut restore.current)
-    })
-}
-
-/// Try to run an operation with the current thread-local generator.
-#[inline]
-fn try_with_rng<R>(f: impl FnOnce(&mut Rng) -> R) -> Result<R, std::thread::AccessError> {
-    RNG.try_with(|rng| {
-        let current = rng.replace(Rng(0));
-
-        let mut restore = RestoreOnDrop { rng, current };
-
-        f(&mut restore.current)
-    })
-}
-
-/// Make sure the original RNG is restored even on panic.
-struct RestoreOnDrop<'a> {
-    rng: &'a Cell<Rng>,
-    current: Rng,
-}
-
-impl Drop for RestoreOnDrop<'_> {
-    fn drop(&mut self) {
-        self.rng.set(Rng(self.current.0));
-    }
-}
-
-/// Initializes the thread-local generator with the given seed.
-#[inline]
-pub fn seed(seed: u64) {
-    with_rng(|r| r.seed(seed));
-}
-
-/// Gives back **current** seed that is being held by the thread-local generator.
-#[inline]
-pub fn get_seed() -> u64 {
-    with_rng(|r| r.get_seed())
-}
-
-/// Generates a random `bool`.
-#[inline]
-pub fn bool() -> bool {
-    with_rng(|r| r.bool())
-}
-
-/// Generates a random `char` in ranges a-z and A-Z.
-#[inline]
-pub fn alphabetic() -> char {
-    with_rng(|r| r.alphabetic())
-}
-
-/// Generates a random `char` in ranges a-z, A-Z and 0-9.
-#[inline]
-pub fn alphanumeric() -> char {
-    with_rng(|r| r.alphanumeric())
-}
-
-/// Generates a random `char` in range a-z.
-#[inline]
-pub fn lowercase() -> char {
-    with_rng(|r| r.lowercase())
-}
-
-/// Generates a random `char` in range A-Z.
-#[inline]
-pub fn uppercase() -> char {
-    with_rng(|r| r.uppercase())
-}
-
-/// Choose an item from an iterator at random.
-///
-/// This function may have an unexpected result if the `len()` property of the
-/// iterator does not match the actual number of items in the iterator. If
-/// the iterator is empty, this returns `None`.
-#[inline]
-pub fn choice<I>(iter: I) -> Option<I::Item>
-where
-    I: IntoIterator,
-    I::IntoIter: ExactSizeIterator,
-{
-    with_rng(|r| r.choice(iter))
-}
-
-/// Generates a random digit in the given `base`.
-///
-/// Digits are represented by `char`s in ranges 0-9 and a-z.
-///
-/// Panics if the base is zero or greater than 36.
-#[inline]
-pub fn digit(base: u32) -> char {
-    with_rng(|r| r.digit(base))
-}
-
-/// Shuffles a slice randomly.
-#[inline]
-pub fn shuffle<T>(slice: &mut [T]) {
-    with_rng(|r| r.shuffle(slice))
-}
-
-macro_rules! integer {
-    ($t:tt, $doc:tt) => {
-        #[doc = $doc]
-        ///
-        /// Panics if the range is empty.
-        #[inline]
-        pub fn $t(range: impl RangeBounds<$t>) -> $t {
-            with_rng(|r| r.$t(range))
-        }
-    };
-}
-
-integer!(u8, "Generates a random `u8` in the given range.");
-integer!(i8, "Generates a random `i8` in the given range.");
-integer!(u16, "Generates a random `u16` in the given range.");
-integer!(i16, "Generates a random `i16` in the given range.");
-integer!(u32, "Generates a random `u32` in the given range.");
-integer!(i32, "Generates a random `i32` in the given range.");
-integer!(u64, "Generates a random `u64` in the given range.");
-integer!(i64, "Generates a random `i64` in the given range.");
-integer!(u128, "Generates a random `u128` in the given range.");
-integer!(i128, "Generates a random `i128` in the given range.");
-integer!(usize, "Generates a random `usize` in the given range.");
-integer!(isize, "Generates a random `isize` in the given range.");
-integer!(char, "Generates a random `char` in the given range.");
-
-/// Generates a random `f32` in range `0..1`.
-pub fn f32() -> f32 {
-    with_rng(|r| r.f32())
-}
-
-/// Generates a random `f64` in range `0..1`.
-pub fn f64() -> f64 {
-    with_rng(|r| r.f64())
-}
-
-/// Collects `amount` values at random from the iterator into a vector.
-pub fn choose_multiple<T: Iterator>(source: T, amount: usize) -> Vec<T::Item> {
-    with_rng(|rng| rng.choose_multiple(source, amount))
-}
-
-#[cfg(not(all(
-    any(target_arch = "wasm32", target_arch = "wasm64"),
-    target_os = "unknown"
-)))]
-fn random_seed() -> Option<u64> {
-    use std::collections::hash_map::DefaultHasher;
-    use std::hash::{Hash, Hasher};
-    use std::thread;
-    use std::time::Instant;
-
-    let mut hasher = DefaultHasher::new();
-    Instant::now().hash(&mut hasher);
-    thread::current().id().hash(&mut hasher);
-    let hash = hasher.finish();
-    Some((hash << 1) | 1)
-}
-
-#[cfg(all(
-    any(target_arch = "wasm32", target_arch = "wasm64"),
-    target_os = "unknown",
-    feature = "js"
-))]
-fn random_seed() -> Option<u64> {
-    // TODO(notgull): Failures should be logged somewhere.
-    let mut seed = [0u8; 8];
-    getrandom::getrandom(&mut seed).ok()?;
-    Some(u64::from_ne_bytes(seed))
-}
-
-#[cfg(all(
-    any(target_arch = "wasm32", target_arch = "wasm64"),
-    target_os = "unknown",
-    not(feature = "js")
-))]
-fn random_seed() -> Option<u64> {
-    None
-}