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Replace TyDesc and its uses with trait vtables and a type_name intrinsic.

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This commit is contained in:
Eduard Burtescu 2015-03-15 04:01:57 +02:00
parent 3e98ab560a
commit e256b7f049
15 changed files with 88 additions and 307 deletions
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7
src/libcore/intrinsics.rs
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@ -44,10 +44,12 @@
use marker::Sized;
#[cfg(stage0)] // SNAP 270a677
pub type GlueFn = extern "Rust" fn(*const i8);
#[lang="ty_desc"]
#[derive(Copy)]
#[cfg(stage0)] // SNAP 270a677
pub struct TyDesc {
// sizeof(T)
pub size: usize,
@ -197,8 +199,13 @@ extern "rust-intrinsic" {
pub fn pref_align_of<T>() -> usize;
/// Get a static pointer to a type descriptor.
#[cfg(stage0)] // SNAP 270a677
pub fn get_tydesc<T: ?Sized>() -> *const TyDesc;
/// Gets a static string slice containing the name of a type.
#[cfg(not(stage0))] // SNAP 270a677
pub fn type_name<T: ?Sized>() -> &'static str;
/// Gets an identifier which is globally unique to the specified type. This
/// function will return the same value for a type regardless of whichever
/// crate it is invoked in.