Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 552 insertions, 0 deletions

diff --git a/third_party/rust/scoped-tls/.cargo-checksum.json b/third_party/rust/scoped-tls/.cargo-checksum.json
new file mode 100644
index 0000000000..ab1c98519d
--- /dev/null
+++ b/third_party/rust/scoped-tls/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"34fd266d7e61276cf49fb2a9ea9887331ef4e72595fed99b7d8735c86cd13631","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"378f5840b258e2779c39418f3f2d7b2ba96f1c7917dd6be0713f88305dbda397","README.md":"0cf015ca6dd078c0f0e607508a4190c0a1328990069e6303c4709530960aab08","src/lib.rs":"ca804e29dde7dc843ab24f7f70c694eb43fac7c62194d85a58c8062caa0a84f4"},"package":"e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"}
\ No newline at end of file
diff --git a/third_party/rust/scoped-tls/Cargo.toml b/third_party/rust/scoped-tls/Cargo.toml
new file mode 100644
index 0000000000..08ec7b6134
--- /dev/null
+++ b/third_party/rust/scoped-tls/Cargo.toml
@@ -0,0 +1,26 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+rust-version = "1.59"
+name = "scoped-tls"
+version = "1.0.1"
+authors = ["Alex Crichton <alex@alexcrichton.com>"]
+description = """
+Library implementation of the standard library's old `scoped_thread_local!`
+macro for providing scoped access to thread local storage (TLS) so any type can
+be stored into TLS.
+"""
+homepage = "https://github.com/alexcrichton/scoped-tls"
+documentation = "https://docs.rs/scoped-tls"
+readme = "README.md"
+license = "MIT/Apache-2.0"
+repository = "https://github.com/alexcrichton/scoped-tls"
diff --git a/third_party/rust/scoped-tls/LICENSE-APACHE b/third_party/rust/scoped-tls/LICENSE-APACHE
new file mode 100644
index 0000000000..16fe87b06e
--- /dev/null
+++ b/third_party/rust/scoped-tls/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
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+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+Copyright [yyyy] [name of copyright owner]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
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diff --git a/third_party/rust/scoped-tls/LICENSE-MIT b/third_party/rust/scoped-tls/LICENSE-MIT
new file mode 100644
index 0000000000..39e0ed6602
--- /dev/null
+++ b/third_party/rust/scoped-tls/LICENSE-MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2014 Alex Crichton
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/third_party/rust/scoped-tls/README.md b/third_party/rust/scoped-tls/README.md
new file mode 100644
index 0000000000..36e6480e2c
--- /dev/null
+++ b/third_party/rust/scoped-tls/README.md
@@ -0,0 +1,32 @@
+# scoped-tls
+
+[![Build Status](https://travis-ci.org/alexcrichton/scoped-tls.svg?branch=master)](https://travis-ci.org/alexcrichton/scoped-tls)
+[![Build status](https://ci.appveyor.com/api/projects/status/9tatexq47i3ee13k?svg=true)](https://ci.appveyor.com/project/alexcrichton/flate2-rs)
+
+[Documentation](https://docs.rs/scoped-tls)
+
+A Rust library providing the old standard library's `scoped_thread_local!` macro
+as a library implementation on crates.io.
+
+```toml
+# Cargo.toml
+[dependencies]
+scoped-tls = "1.0"
+```
+
+# License
+
+This project is licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
+   http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT](LICENSE-MIT) or
+   http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in Serde by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
diff --git a/third_party/rust/scoped-tls/src/lib.rs b/third_party/rust/scoped-tls/src/lib.rs
new file mode 100644
index 0000000000..d4567c2bcb
--- /dev/null
+++ b/third_party/rust/scoped-tls/src/lib.rs
@@ -0,0 +1,267 @@
+// Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// 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.
+
+//! Scoped thread-local storage
+//!
+//! This module provides the ability to generate *scoped* thread-local
+//! variables. In this sense, scoped indicates that thread local storage
+//! actually stores a reference to a value, and this reference is only placed
+//! in storage for a scoped amount of time.
+//!
+//! There are no restrictions on what types can be placed into a scoped
+//! variable, but all scoped variables are initialized to the equivalent of
+//! null. Scoped thread local storage is useful when a value is present for a known
+//! period of time and it is not required to relinquish ownership of the
+//! contents.
+//!
+//! # Examples
+//!
+//! ```
+//! #[macro_use]
+//! extern crate scoped_tls;
+//!
+//! scoped_thread_local!(static FOO: u32);
+//!
+//! # fn main() {
+//! // Initially each scoped slot is empty.
+//! assert!(!FOO.is_set());
+//!
+//! // When inserting a value, the value is only in place for the duration
+//! // of the closure specified.
+//! FOO.set(&1, || {
+//!     FOO.with(|slot| {
+//!         assert_eq!(*slot, 1);
+//!     });
+//! });
+//! # }
+//! ```
+
+#![deny(missing_docs, warnings)]
+
+use std::cell::Cell;
+use std::marker;
+use std::thread::LocalKey;
+
+/// The macro. See the module level documentation for the description and examples.
+#[macro_export]
+macro_rules! scoped_thread_local {
+    ($(#[$attrs:meta])* $vis:vis static $name:ident: $ty:ty) => (
+        $(#[$attrs])*
+        $vis static $name: $crate::ScopedKey<$ty> = $crate::ScopedKey {
+            inner: {
+                ::std::thread_local!(static FOO: ::std::cell::Cell<*const ()> = const {
+                    ::std::cell::Cell::new(::std::ptr::null())
+                });
+                &FOO
+            },
+            _marker: ::std::marker::PhantomData,
+        };
+    )
+}
+
+/// Type representing a thread local storage key corresponding to a reference
+/// to the type parameter `T`.
+///
+/// Keys are statically allocated and can contain a reference to an instance of
+/// type `T` scoped to a particular lifetime. Keys provides two methods, `set`
+/// and `with`, both of which currently use closures to control the scope of
+/// their contents.
+pub struct ScopedKey<T> {
+    #[doc(hidden)]
+    pub inner: &'static LocalKey<Cell<*const ()>>,
+    #[doc(hidden)]
+    pub _marker: marker::PhantomData<T>,
+}
+
+unsafe impl<T> Sync for ScopedKey<T> {}
+
+impl<T> ScopedKey<T> {
+    /// Inserts a value into this scoped thread local storage slot for a
+    /// duration of a closure.
+    ///
+    /// While `f` is running, the value `t` will be returned by `get` unless
+    /// this function is called recursively inside of `f`.
+    ///
+    /// Upon return, this function will restore the previous value, if any
+    /// was available.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// #[macro_use]
+    /// extern crate scoped_tls;
+    ///
+    /// scoped_thread_local!(static FOO: u32);
+    ///
+    /// # fn main() {
+    /// FOO.set(&100, || {
+    ///     let val = FOO.with(|v| *v);
+    ///     assert_eq!(val, 100);
+    ///
+    ///     // set can be called recursively
+    ///     FOO.set(&101, || {
+    ///         // ...
+    ///     });
+    ///
+    ///     // Recursive calls restore the previous value.
+    ///     let val = FOO.with(|v| *v);
+    ///     assert_eq!(val, 100);
+    /// });
+    /// # }
+    /// ```
+    pub fn set<F, R>(&'static self, t: &T, f: F) -> R
+        where F: FnOnce() -> R
+    {
+        struct Reset {
+            key: &'static LocalKey<Cell<*const ()>>,
+            val: *const (),
+        }
+        impl Drop for Reset {
+            fn drop(&mut self) {
+                self.key.with(|c| c.set(self.val));
+            }
+        }
+        let prev = self.inner.with(|c| {
+            let prev = c.get();
+            c.set(t as *const T as *const ());
+            prev
+        });
+        let _reset = Reset { key: self.inner, val: prev };
+        f()
+    }
+
+    /// Gets a value out of this scoped variable.
+    ///
+    /// This function takes a closure which receives the value of this
+    /// variable.
+    ///
+    /// # Panics
+    ///
+    /// This function will panic if `set` has not previously been called.
+    ///
+    /// # Examples
+    ///
+    /// ```no_run
+    /// #[macro_use]
+    /// extern crate scoped_tls;
+    ///
+    /// scoped_thread_local!(static FOO: u32);
+    ///
+    /// # fn main() {
+    /// FOO.with(|slot| {
+    ///     // work with `slot`
+    /// # drop(slot);
+    /// });
+    /// # }
+    /// ```
+    pub fn with<F, R>(&'static self, f: F) -> R
+        where F: FnOnce(&T) -> R
+    {
+        let val = self.inner.with(|c| c.get());
+        assert!(!val.is_null(), "cannot access a scoped thread local \
+                                 variable without calling `set` first");
+        unsafe {
+            f(&*(val as *const T))
+        }
+    }
+
+    /// Test whether this TLS key has been `set` for the current thread.
+    pub fn is_set(&'static self) -> bool {
+        self.inner.with(|c| !c.get().is_null())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::cell::Cell;
+    use std::sync::mpsc::{channel, Sender};
+    use std::thread;
+
+    scoped_thread_local!(static FOO: u32);
+
+    #[test]
+    fn smoke() {
+        scoped_thread_local!(static BAR: u32);
+
+        assert!(!BAR.is_set());
+        BAR.set(&1, || {
+            assert!(BAR.is_set());
+            BAR.with(|slot| {
+                assert_eq!(*slot, 1);
+            });
+        });
+        assert!(!BAR.is_set());
+    }
+
+    #[test]
+    fn cell_allowed() {
+        scoped_thread_local!(static BAR: Cell<u32>);
+
+        BAR.set(&Cell::new(1), || {
+            BAR.with(|slot| {
+                assert_eq!(slot.get(), 1);
+            });
+        });
+    }
+
+    #[test]
+    fn scope_item_allowed() {
+        assert!(!FOO.is_set());
+        FOO.set(&1, || {
+            assert!(FOO.is_set());
+            FOO.with(|slot| {
+                assert_eq!(*slot, 1);
+            });
+        });
+        assert!(!FOO.is_set());
+    }
+
+    #[test]
+    fn panic_resets() {
+        struct Check(Sender<u32>);
+        impl Drop for Check {
+            fn drop(&mut self) {
+                FOO.with(|r| {
+                    self.0.send(*r).unwrap();
+                })
+            }
+        }
+
+        let (tx, rx) = channel();
+        let t = thread::spawn(|| {
+            FOO.set(&1, || {
+                let _r = Check(tx);
+
+                FOO.set(&2, || {
+                    panic!()
+                });
+            });
+        });
+
+        assert_eq!(rx.recv().unwrap(), 1);
+        assert!(t.join().is_err());
+    }
+
+    #[test]
+    fn attrs_allowed() {
+        scoped_thread_local!(
+            /// Docs
+            static BAZ: u32
+        );
+
+        scoped_thread_local!(
+            #[allow(non_upper_case_globals)]
+            static quux: u32
+        );
+
+        let _ = BAZ;
+        let _ = quux;
+    }
+}