Added frontend

optimizer/canvas/benches/random_card.rs

@@ -0,0 +1,30 @@
+use arbitrary::{Arbitrary, Unstructured};
+use canvas::{Card, CardField};
+
+#[derive(Debug, Clone)]
+pub struct RandomCard(pub(crate) Card);
+#[derive(Debug)]
+struct RandomCardField(CardField);
+
+impl<'a> Arbitrary<'a> for RandomCardField {
+    fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Self> {
+        let i = u.int_in_range(0..=15)?;
+        if let Ok(w) = CardField::try_from_bits(i) {
+            Ok(RandomCardField(w))
+        } else {
+            Ok(RandomCardField(CardField::Empty))
+        }
+    }
+}
+
+impl<'a> Arbitrary<'a> for RandomCard {
+    fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Self> {
+        let mut r = vec![];
+        for _ in 0..5 {
+            r.push(u.arbitrary::<RandomCardField>()?)
+        }
+        let w: [RandomCardField; 5] = r.try_into().unwrap();
+        let r = Card::from(w.map(|x: RandomCardField| x.0));
+        Ok(RandomCard(r))
+    }
+}