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-rw-r--r--components/macros/lib.rs63
1 files changed, 0 insertions, 63 deletions
diff --git a/components/macros/lib.rs b/components/macros/lib.rs
index daf5eb3c52c..b8db24baea1 100644
--- a/components/macros/lib.rs
+++ b/components/macros/lib.rs
@@ -184,66 +184,3 @@ macro_rules! bitfield(
}
)
)
-
-
-#[macro_export]
-macro_rules! lazy_init(
- ($(static ref $N:ident : $T:ty = $e:expr;)*) => (
- $(
- #[allow(non_camel_case_types)]
- struct $N {__unit__: ()}
- static $N: $N = $N {__unit__: ()};
- impl Deref<$T> for $N {
- fn deref<'a>(&'a self) -> &'a $T {
- unsafe {
- static mut s: *const $T = 0 as *const $T;
- static mut ONCE: ::sync::one::Once = ::sync::one::ONCE_INIT;
- ONCE.doit(|| {
- s = ::std::mem::transmute::<Box<$T>, *const $T>(box () ($e));
- });
- &*s
- }
- }
- }
-
- )*
- )
-)
-
-
-#[cfg(test)]
-mod tests {
- use std::collections::hashmap::HashMap;
- lazy_init! {
- static ref NUMBER: uint = times_two(3);
- static ref VEC: [Box<uint>, ..3] = [box 1, box 2, box 3];
- static ref OWNED_STRING: String = "hello".to_string();
- static ref HASHMAP: HashMap<uint, &'static str> = {
- let mut m = HashMap::new();
- m.insert(0u, "abc");
- m.insert(1, "def");
- m.insert(2, "ghi");
- m
- };
- }
-
- fn times_two(n: uint) -> uint {
- n * 2
- }
-
- #[test]
- fn test_basic() {
- assert_eq!(*OWNED_STRING, "hello".to_string());
- assert_eq!(*NUMBER, 6);
- assert!(HASHMAP.find(&1).is_some());
- assert!(HASHMAP.find(&3).is_none());
- assert_eq!(VEC.as_slice(), &[box 1, box 2, box 3]);
- }
-
- #[test]
- fn test_repeat() {
- assert_eq!(*NUMBER, 6);
- assert_eq!(*NUMBER, 6);
- assert_eq!(*NUMBER, 6);
- }
-}