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author | Till Höppner | 2016-03-09 21:27:17 +0100 |
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committer | Till Höppner | 2016-03-09 21:27:17 +0100 |
commit | c7f8c7e985173e504191b95286f53e0927db2d78 (patch) | |
tree | 360f8a90b79fa32e363c7f9e3a78d62027ad8d17 /src | |
parent | b402a084e7d7bbeb59d58e400fadb7bbdbf0e699 (diff) | |
download | ilc-c7f8c7e985173e504191b95286f53e0927db2d78.tar.gz ilc-c7f8c7e985173e504191b95286f53e0927db2d78.tar.xz ilc-c7f8c7e985173e504191b95286f53e0927db2d78.zip |
[ci skip] Remove accidentally commited scratch files
Diffstat (limited to 'src')
-rw-r--r-- | src/lambda.rs | 18 | ||||
-rw-r--r-- | src/lazy.rs | 74 |
2 files changed, 0 insertions, 92 deletions
diff --git a/src/lambda.rs b/src/lambda.rs deleted file mode 100644 index cf7b1ec..0000000 --- a/src/lambda.rs +++ /dev/null @@ -1,18 +0,0 @@ -// I'm only a little sorry for this. - -// Inline definition of anonymous functions. Examples: -// l!(42;) -// l!(i32 := 42) -// l!(i: i32 := i + 42) -// l!(i: i32, j: i32 -> i32 := i + j) -#[macro_export] -macro_rules! l { - ($body: expr) => ({ fn f() { $body } f }); - ($res: ty := $body: expr) => ({ fn f() -> $res { $body } f }); - ($($n: ident: $t: ty),+ := $body: expr) => ({ - fn f($($n: $t),+) { $body } f - }); - ($($n: ident: $t: ty),+ -> $res: ty := $body: expr) => ({ - fn f($($n: $t),+) -> $res { $body } f - }) -} diff --git a/src/lazy.rs b/src/lazy.rs deleted file mode 100644 index b4f801b..0000000 --- a/src/lazy.rs +++ /dev/null @@ -1,74 +0,0 @@ -#![macro_escape] - -use std::ptr; -use std::cell::UnsafeCell; -use std::ops::Deref; -use std::boxed::FnBox; - -pub enum State<V> { - Evaluated(V), - Evaluating, - Unevaluated(Box<FnBox() -> V>) -} - -pub struct Lazy<V> { - state: UnsafeCell<State<V>>, -} - -impl<V> Lazy<V> { - pub fn new(f: Box<FnBox() -> V>) -> Lazy<V> { - Lazy { state: UnsafeCell::new(State::Unevaluated(f)) } - } - - pub fn ready(v: V) -> Lazy<V> { - Lazy { state: UnsafeCell::new(State::Evaluated(v)) } - } - - pub fn force(&mut self) { - self.value(); - } - - pub fn unwrap(self) -> V { - unsafe { - match self.state.into_inner() { - State::Unevaluated(f) => f(), - State::Evaluating => panic!("Illegal state, can't call unwrap during evaluation"), - State::Evaluated(v) => v - } - } - } - - pub fn value(&self) -> &V { - unsafe { - let state = self.state.get(); - match *state { - State::Evaluated(ref v) => v, - State::Evaluating => panic!("Illegal state, can't call value during evaluation"), - State::Unevaluated(_) => { - if let State::Unevaluated(f) = ptr::replace(state, State::Evaluating) { - ptr::replace(state, State::Evaluated(f())); - } - if let State::Evaluated(ref v) = *state { return v } - unreachable!() - } - } - } - } -} - -impl<V> Deref for Lazy<V> { - type Target = V; - fn deref(&self) -> &V { self.value() } -} - -#[macro_export] -macro_rules! lazy { - (@as_expr $val: expr) => { $val }; - ($($val: tt)*) => { Lazy::new(Box::new(move || lazy![@as_expr { $($val)* }])) }; -} - -#[macro_export] -macro_rules! eager { - (@as_expr $val: expr) => { $val }; - ($($val: tt)*) => { Lazy::<_>::ready(eager![@as_expr { $($val)* }]) }; -} |