32 bits

Source/Stack.rs

@@ -0,0 +1,50 @@
+use crate::Types::*;
+use std::mem;
+
+pub struct Stack {
+    storage: Vec<u8>,
+    capacity: usize,
+}
+
+impl Stack {
+    pub fn New(size: usize) -> Self {
+        Self {
+            storage: Vec::with_capacity(size),
+            capacity: size,
+        }
+    }
+
+    pub fn Flush(&mut self) {
+        self.storage.clear();
+    }
+
+    pub fn PushByte(&mut self, item: Byte) {
+        if self.storage.len() + 1 < self.capacity {
+            self.storage.push(item);
+        }
+    }
+
+    pub fn PopByte(&mut self) -> Byte {
+        self.storage.pop().unwrap_or(0)
+    }
+
+    pub fn PushWord(&mut self, item: Word) {
+        const BYTES: usize = mem::size_of::<Word>();
+
+        if self.storage.len() + BYTES < self.capacity {
+            self.storage.extend(item);
+        }
+    }
+
+    pub fn PopWord(&mut self) -> Word {
+        const BYTES: usize = mem::size_of::<Word>();
+        let mut buffer = [0; BYTES];
+
+        for i in 0..BYTES {
+            buffer[i] = self.storage.pop().unwrap_or(0);
+        }
+
+        buffer
+    }
+}
+