From 21072bee48ff6ec19b79e0d9527ad8cc34a4e9e0 Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Mon, 22 Aug 2022 21:46:09 +0200
Subject: split `embassy-util` into `embassy-futures`, `embassy-sync`.

---
 embassy-util/src/ring_buffer.rs | 146 ----------------------------------------
 1 file changed, 146 deletions(-)
 delete mode 100644 embassy-util/src/ring_buffer.rs

(limited to 'embassy-util/src/ring_buffer.rs')

diff --git a/embassy-util/src/ring_buffer.rs b/embassy-util/src/ring_buffer.rs
deleted file mode 100644
index 521084024..000000000
--- a/embassy-util/src/ring_buffer.rs
+++ /dev/null
@@ -1,146 +0,0 @@
-pub struct RingBuffer<const N: usize> {
-    buf: [u8; N],
-    start: usize,
-    end: usize,
-    empty: bool,
-}
-
-impl<const N: usize> RingBuffer<N> {
-    pub const fn new() -> Self {
-        Self {
-            buf: [0; N],
-            start: 0,
-            end: 0,
-            empty: true,
-        }
-    }
-
-    pub fn push_buf(&mut self) -> &mut [u8] {
-        if self.start == self.end && !self.empty {
-            trace!("  ringbuf: push_buf empty");
-            return &mut self.buf[..0];
-        }
-
-        let n = if self.start <= self.end {
-            self.buf.len() - self.end
-        } else {
-            self.start - self.end
-        };
-
-        trace!("  ringbuf: push_buf {:?}..{:?}", self.end, self.end + n);
-        &mut self.buf[self.end..self.end + n]
-    }
-
-    pub fn push(&mut self, n: usize) {
-        trace!("  ringbuf: push {:?}", n);
-        if n == 0 {
-            return;
-        }
-
-        self.end = self.wrap(self.end + n);
-        self.empty = false;
-    }
-
-    pub fn pop_buf(&mut self) -> &mut [u8] {
-        if self.empty {
-            trace!("  ringbuf: pop_buf empty");
-            return &mut self.buf[..0];
-        }
-
-        let n = if self.end <= self.start {
-            self.buf.len() - self.start
-        } else {
-            self.end - self.start
-        };
-
-        trace!("  ringbuf: pop_buf {:?}..{:?}", self.start, self.start + n);
-        &mut self.buf[self.start..self.start + n]
-    }
-
-    pub fn pop(&mut self, n: usize) {
-        trace!("  ringbuf: pop {:?}", n);
-        if n == 0 {
-            return;
-        }
-
-        self.start = self.wrap(self.start + n);
-        self.empty = self.start == self.end;
-    }
-
-    pub fn is_full(&self) -> bool {
-        self.start == self.end && !self.empty
-    }
-
-    pub fn is_empty(&self) -> bool {
-        self.empty
-    }
-
-    #[allow(unused)]
-    pub fn len(&self) -> usize {
-        if self.empty {
-            0
-        } else if self.start < self.end {
-            self.end - self.start
-        } else {
-            N + self.end - self.start
-        }
-    }
-
-    pub fn clear(&mut self) {
-        self.start = 0;
-        self.end = 0;
-        self.empty = true;
-    }
-
-    fn wrap(&self, n: usize) -> usize {
-        assert!(n <= self.buf.len());
-        if n == self.buf.len() {
-            0
-        } else {
-            n
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn push_pop() {
-        let mut rb: RingBuffer<4> = RingBuffer::new();
-        let buf = rb.push_buf();
-        assert_eq!(4, buf.len());
-        buf[0] = 1;
-        buf[1] = 2;
-        buf[2] = 3;
-        buf[3] = 4;
-        rb.push(4);
-
-        let buf = rb.pop_buf();
-        assert_eq!(4, buf.len());
-        assert_eq!(1, buf[0]);
-        rb.pop(1);
-
-        let buf = rb.pop_buf();
-        assert_eq!(3, buf.len());
-        assert_eq!(2, buf[0]);
-        rb.pop(1);
-
-        let buf = rb.pop_buf();
-        assert_eq!(2, buf.len());
-        assert_eq!(3, buf[0]);
-        rb.pop(1);
-
-        let buf = rb.pop_buf();
-        assert_eq!(1, buf.len());
-        assert_eq!(4, buf[0]);
-        rb.pop(1);
-
-        let buf = rb.pop_buf();
-        assert_eq!(0, buf.len());
-
-        let buf = rb.push_buf();
-        assert_eq!(4, buf.len());
-    }
-}
-- 
cgit