diff options
Diffstat (limited to 'third_party/rust/foreign-types-shared')
-rw-r--r-- | third_party/rust/foreign-types-shared/.cargo-checksum.json | 1 | ||||
-rw-r--r-- | third_party/rust/foreign-types-shared/Cargo.toml | 21 | ||||
-rw-r--r-- | third_party/rust/foreign-types-shared/LICENSE-APACHE | 202 | ||||
-rw-r--r-- | third_party/rust/foreign-types-shared/LICENSE-MIT | 19 | ||||
-rw-r--r-- | third_party/rust/foreign-types-shared/src/lib.rs | 51 |
5 files changed, 294 insertions, 0 deletions
diff --git a/third_party/rust/foreign-types-shared/.cargo-checksum.json b/third_party/rust/foreign-types-shared/.cargo-checksum.json new file mode 100644 index 0000000000..2d6d8919ab --- /dev/null +++ b/third_party/rust/foreign-types-shared/.cargo-checksum.json @@ -0,0 +1 @@ +{"files":{"Cargo.toml":"6b91ae600fe7b521537096b2269ab7bfd606f8a1fcd97749634dd03ba18daf53","LICENSE-APACHE":"c6596eb7be8581c18be736c846fb9173b69eccf6ef94c5135893ec56bd92ba08","LICENSE-MIT":"333ea3aaa3cadb819f4acd9f9153f9feee060a995ca8710f32bc5bd9a4b91734","src/lib.rs":"77aed289fd36258c273f033e766e572ee05330249083c017d045f0a75662f5df"},"package":"00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"}
\ No newline at end of file diff --git a/third_party/rust/foreign-types-shared/Cargo.toml b/third_party/rust/foreign-types-shared/Cargo.toml new file mode 100644 index 0000000000..e2cb783b98 --- /dev/null +++ b/third_party/rust/foreign-types-shared/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 = "foreign-types-shared" +version = "0.1.1" +authors = ["Steven Fackler <sfackler@gmail.com>"] +description = "An internal crate used by foreign-types" +license = "MIT/Apache-2.0" +repository = "https://github.com/sfackler/foreign-types" + +[dependencies] diff --git a/third_party/rust/foreign-types-shared/LICENSE-APACHE b/third_party/rust/foreign-types-shared/LICENSE-APACHE new file mode 100644 index 0000000000..8f71f43fee --- /dev/null +++ b/third_party/rust/foreign-types-shared/LICENSE-APACHE @@ -0,0 +1,202 @@ + 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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Internal crate used by foreign-types + +#![no_std] +#![warn(missing_docs)] +#![doc(html_root_url="https://docs.rs/foreign-types-shared/0.1")] + +use core::cell::UnsafeCell; + +/// An opaque type used to define `ForeignTypeRef` types. +/// +/// A type implementing `ForeignTypeRef` should simply be a newtype wrapper around this type. +pub struct Opaque(UnsafeCell<()>); + +/// A type implemented by wrappers over foreign types. +pub trait ForeignType: Sized { + /// The raw C type. + type CType; + + /// The type representing a reference to this type. + type Ref: ForeignTypeRef<CType = Self::CType>; + + /// Constructs an instance of this type from its raw type. + unsafe fn from_ptr(ptr: *mut Self::CType) -> Self; + + /// Returns a raw pointer to the wrapped value. + fn as_ptr(&self) -> *mut Self::CType; +} + +/// A trait implemented by types which reference borrowed foreign types. +pub trait ForeignTypeRef: Sized { + /// The raw C type. + type CType; + + /// Constructs a shared instance of this type from its raw type. + #[inline] + unsafe fn from_ptr<'a>(ptr: *mut Self::CType) -> &'a Self { + &*(ptr as *mut _) + } + + /// Constructs a mutable reference of this type from its raw type. + #[inline] + unsafe fn from_ptr_mut<'a>(ptr: *mut Self::CType) -> &'a mut Self { + &mut *(ptr as *mut _) + } + + /// Returns a raw pointer to the wrapped value. + #[inline] + fn as_ptr(&self) -> *mut Self::CType { + self as *const _ as *mut _ + } +} |