739df232fe
This allows cross-crate inlining which is *very* good because this is called a lot throughout libstd (even when libstd is inlined across crates).
65 lines
1.8 KiB
Rust
65 lines
1.8 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use cast;
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use unstable::intrinsics::TyDesc;
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/// The representation of a Rust managed box
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pub struct Box<T> {
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ref_count: uint,
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type_desc: *TyDesc,
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prev: *Box<T>,
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next: *Box<T>,
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data: T
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}
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/// The representation of a Rust vector
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pub struct Vec<T> {
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fill: uint,
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alloc: uint,
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data: T
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}
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/// The representation of a Rust string
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pub type String = Vec<u8>;
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/// The representation of a Rust slice
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pub struct Slice<T> {
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data: *T,
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len: uint
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}
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/// The representation of a Rust closure
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pub struct Closure {
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code: *(),
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env: *(),
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}
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/// This trait is meant to map equivalences between raw structs and their
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/// corresponding rust values.
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pub trait Repr<T> {
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/// This function "unwraps" a rust value (without consuming it) into its raw
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/// struct representation. This can be used to read/write different values
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/// for the struct. This is a safe method because by default it does not
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/// give write-access to the struct returned.
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#[inline]
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fn repr(&self) -> T { unsafe { cast::transmute_copy(self) } }
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}
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impl<'self, T> Repr<Slice<T>> for &'self [T] {}
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impl<'self> Repr<Slice<u8>> for &'self str {}
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impl<T> Repr<*Box<T>> for @T {}
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impl<T> Repr<*Box<Vec<T>>> for @[T] {}
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impl Repr<*String> for ~str {}
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impl Repr<*Box<String>> for @str {}
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// sure would be nice to have this
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// impl<T> Repr<*Vec<T>> for ~[T] {}
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