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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /vendor/drop_bomb | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/drop_bomb')
-rw-r--r-- | vendor/drop_bomb/.cargo-checksum.json | 1 | ||||
-rw-r--r-- | vendor/drop_bomb/Cargo.toml | 21 | ||||
-rw-r--r-- | vendor/drop_bomb/LICENSE-APACHE | 201 | ||||
-rw-r--r-- | vendor/drop_bomb/LICENSE-MIT | 23 | ||||
-rw-r--r-- | vendor/drop_bomb/README.md | 10 | ||||
-rw-r--r-- | vendor/drop_bomb/src/lib.rs | 206 |
6 files changed, 462 insertions, 0 deletions
diff --git a/vendor/drop_bomb/.cargo-checksum.json b/vendor/drop_bomb/.cargo-checksum.json new file mode 100644 index 000000000..16de68d45 --- /dev/null +++ b/vendor/drop_bomb/.cargo-checksum.json @@ -0,0 +1 @@ +{"files":{"Cargo.toml":"1273bc1c6d16e67006d49dc83aefb64f87d201b4f01024b389151d2dcf256e44","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"8d8b039767810563e5fa50f9bc75c4ebe57f2dd82f352aef8f39dbbd175feec1","src/lib.rs":"b00a8c61ad65da51e5e179479597b2c78d4e0b616526955d58f2a62e428c322c"},"package":"9bda8e21c04aca2ae33ffc2fd8c23134f3cac46db123ba97bd9d3f3b8a4a85e1"}
\ No newline at end of file diff --git a/vendor/drop_bomb/Cargo.toml b/vendor/drop_bomb/Cargo.toml new file mode 100644 index 000000000..f878a7bf9 --- /dev/null +++ b/vendor/drop_bomb/Cargo.toml @@ -0,0 +1,21 @@ +# 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 believe there's an error in this file please file an +# issue against the rust-lang/cargo repository. If you're +# editing this file be aware that the upstream Cargo.toml +# will likely look very different (and much more reasonable) + +[package] +name = "drop_bomb" +version = "0.1.5" +authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"] +exclude = ["*.jpg"] +description = "A runtime guard for implementing linear types.\n" +categories = ["rust-patterns"] +license = "MIT OR Apache-2.0" +repository = "https://github.com/matklad/drop_bomb" diff --git a/vendor/drop_bomb/LICENSE-APACHE b/vendor/drop_bomb/LICENSE-APACHE new file mode 100644 index 000000000..16fe87b06 --- /dev/null +++ b/vendor/drop_bomb/LICENSE-APACHE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. 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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/vendor/drop_bomb/README.md b/vendor/drop_bomb/README.md new file mode 100644 index 000000000..1a8bf53d9 --- /dev/null +++ b/vendor/drop_bomb/README.md @@ -0,0 +1,10 @@ +# drop_bomb + +[![Build Status](https://travis-ci.org/matklad/drop_bomb.svg?branch=master)](https://travis-ci.org/matklad/drop_bomb) +[![Crates.io](https://img.shields.io/crates/v/drop_bomb.svg)](https://crates.io/crates/drop_bomb) +[![API reference](https://docs.rs/drop_bomb/badge.svg)](https://docs.rs/drop_bomb/) + +<img align="left" src="./Merkwürdigliebe.jpg"> + + A runtime guard for (~~protecting your precious bodily fluids~~) implementing linear types. + See the [docs](https://docs.rs/drop_bomb/) for more. diff --git a/vendor/drop_bomb/src/lib.rs b/vendor/drop_bomb/src/lib.rs new file mode 100644 index 000000000..a712e7c8c --- /dev/null +++ b/vendor/drop_bomb/src/lib.rs @@ -0,0 +1,206 @@ +//! # drop_bomb +//! +//! `drop_bomb` provides two types, `DropBomb` and `DebugDropBomb`, +//! which panic in `drop` with a specified message unless +//! defused. This is useful as a building-block for runtime-checked +//! linear types. +//! +//! For example, one can build a variant of `BufWriter` which enforces +//! handling of errors during flush. +//! +//! ```rust +//! extern crate drop_bomb; +//! +//! use std::io::{Write, BufWriter, Result}; +//! use drop_bomb::DropBomb; +//! +//! struct CheckedBufWriter<W: Write> { +//! inner: BufWriter<W>, +//! bomb: DropBomb, +//! } +//! +//! impl<W: Write> CheckedBufWriter<W> { +//! fn new(inner: BufWriter<W>) -> CheckedBufWriter<W> { +//! let bomb = DropBomb::new( +//! "CheckedBufWriter must be explicitly closed \ +//! to handle potential errors on flush" +//! ); +//! CheckedBufWriter { inner, bomb } +//! } +//! +//! fn close(mut self) -> Result<()> { +//! self.bomb.defuse(); +//! self.inner.flush()?; +//! Ok(()) +//! } +//! } +//! ``` +//! +//! ## Notes: +//! +//! * Bombs do nothing if a thread is already panicking. +//! * When `#[cfg(debug_assertions)]` is disabled, `DebugDropBomb` is +//! always defused and has a zero size. +use std::borrow::Cow; + +#[derive(Debug)] +#[must_use] +pub struct DropBomb(RealBomb); + +impl DropBomb { + pub fn new(msg: impl Into<Cow<'static, str>>) -> DropBomb { + DropBomb(RealBomb::new(msg.into())) + } + pub fn defuse(&mut self) { + self.set_defused(true) + } + pub fn set_defused(&mut self, defused: bool) { + self.0.set_defused(defused) + } + pub fn is_defused(&self) -> bool { + self.0.is_defused() + } +} + +#[derive(Debug)] +#[must_use] +pub struct DebugDropBomb(DebugBomb); + +impl DebugDropBomb { + pub fn new(msg: impl Into<Cow<'static, str>>) -> DebugDropBomb { + DebugDropBomb(DebugBomb::new(msg.into())) + } + pub fn defuse(&mut self) { + self.set_defused(true) + } + pub fn set_defused(&mut self, defused: bool) { + self.0.set_defused(defused) + } + pub fn is_defused(&self) -> bool { + self.0.is_defused() + } +} + +#[cfg(debug_assertions)] +type DebugBomb = RealBomb; +#[cfg(not(debug_assertions))] +type DebugBomb = FakeBomb; + +#[derive(Debug)] +struct RealBomb { + msg: Cow<'static, str>, + defused: bool, +} + +impl RealBomb { + fn new(msg: Cow<'static, str>) -> RealBomb { + RealBomb { + msg: msg.into(), + defused: false, + } + } + fn set_defused(&mut self, defused: bool) { + self.defused = defused + } + fn is_defused(&self) -> bool { + self.defused + } +} + +impl Drop for RealBomb { + fn drop(&mut self) { + if !self.defused && !::std::thread::panicking() { + panic!("{}", self.msg) + } + } +} + +#[derive(Debug)] +#[cfg(not(debug_assertions))] +struct FakeBomb {} + +#[cfg(not(debug_assertions))] +impl FakeBomb { + fn new(_msg: Cow<'static, str>) -> FakeBomb { + FakeBomb {} + } + fn set_defused(&mut self, _defused: bool) {} + fn is_defused(&self) -> bool { + true + } +} + +#[cfg(not(debug_assertions))] +impl Drop for FakeBomb { + fn drop(&mut self) {} +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + #[should_panic(expected = "Kaboom")] + fn armed_bomb_bombs() { + let _b = DropBomb::new("Kaboom"); + } + + #[test] + fn defused_bomb_is_safe() { + let mut b = DropBomb::new("Kaboom"); + assert!(!b.is_defused()); + b.defuse(); + assert!(b.is_defused()); + } + + #[test] + #[should_panic(expected = r#"printf("sucks to be you"); exit(666);"#)] + fn no_double_panics() { + let _b = DropBomb::new("Kaboom"); + panic!(r#"printf("sucks to be you"); exit(666);"#) + } + + #[test] + #[should_panic(expected = "Kaboom")] + #[cfg(debug_assertions)] + fn debug_bomb_bombs_if_debug() { + let _b = DebugDropBomb::new("Kaboom"); + } + + #[test] + #[cfg(not(debug_assertions))] + fn debug_bomb_bombs_if_debug() { + let _b = DebugDropBomb::new("Kaboom"); + } + + #[test] + fn defused_bomb_is_safe_if_debug() { + let mut b = DebugDropBomb::new("Kaboom"); + #[cfg(debug_assertions)] + assert!(!b.is_defused()); + #[cfg(not(debug_assertions))] + assert!(b.is_defused()); + b.defuse(); + assert!(b.is_defused()); + } + + #[test] + #[should_panic(expected = r#"printf("sucks to be you"); exit(666);"#)] + fn no_double_panics_if_debug() { + let _b = DebugDropBomb::new("Kaboom"); + panic!(r#"printf("sucks to be you"); exit(666);"#) + } + + #[test] + #[cfg(not(debug_assertions))] + fn debug_bomb_is_zst() { + assert_eq!(::std::mem::size_of::<DebugDropBomb>(), 0); + } + + #[test] + fn check_traits() { + fn assert_traits<T: ::std::fmt::Debug + Send + Sync>() {} + assert_traits::<DropBomb>(); + assert_traits::<DebugDropBomb>(); + } +} |