1 files changed, 72 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..e8f7511
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,72 @@
+#![feature(random)]
+use std::random::random;
+
+#[derive(Debug, Clone)]
+pub enum Suit {
+    Spades,
+    Hearts,
+    Clubs,
+    Diamonds,
+}
+
+#[derive(Debug, Clone)]
+pub enum Value {
+    Ace,
+    Two,
+    Three,
+    Four,
+    Five,
+    Six,
+    Seven,
+    Eight,
+    Nine,
+    Ten,
+    Jack,
+    Queen,
+    King,
+}
+
+#[derive(Debug, Clone)]
+pub struct Card {
+    pub suit: Suit,
+    pub value: Value,
+}
+
+impl Card {
+    pub fn new(suit: Suit, value: Value) -> Self {
+        Card {
+            suit: suit,
+            value: value,
+        }
+    }
+}
+
+#[derive(Debug)]
+pub struct Stack(Vec<Card>);
+
+impl Stack {
+    pub fn new(cards: Vec<Card>) -> Self {
+        Stack(cards)
+    }
+    pub fn shuffle(&mut self) {
+        let n: usize = self.0.len();
+        if n == 0 {
+            return;
+        }
+        for i in 0..(n - 1) {
+            let j = random::<usize>(..) % (n - i) + i;
+            self.0.swap(i, j);
+        }
+    }
+    pub fn shuffle_in(&mut self, stack: &mut Stack) {
+        stack.take_cards(&mut self.0);
+        self.shuffle();
+    }
+    pub fn draw(&mut self) -> Option<Card> {
+        self.0.iter().next().cloned();
+    }
+    fn take_cards(&mut self, cards: &mut Vec<Card>) {
+        cards.append(&mut self.0.clone());
+        self.0.clear();
+    }
+}