From bd1cc6c990d0603d15ab39811d3948ba094532d2 Mon Sep 17 00:00:00 2001
From: Tony Arcieri <bascule@gmail.com>
Date: Wed, 2 Sep 2020 09:13:51 -0700
Subject: [PATCH] elliptic-curve: extract point::Compression trait

Move point compression defaults onto their own trait
---
 elliptic-curve/src/point.rs       | 6 ++++++
 elliptic-curve/src/sec1.rs        | 4 +---
 elliptic-curve/src/weierstrass.rs | 5 +----
 3 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/elliptic-curve/src/point.rs b/elliptic-curve/src/point.rs
index 67a810a93..5a0ae58ae 100644
--- a/elliptic-curve/src/point.rs
+++ b/elliptic-curve/src/point.rs
@@ -1,5 +1,11 @@
 //! Traits for elliptic curve points
 
+/// Point compression settings
+pub trait Compression {
+    /// Should point compression be applied by default?
+    const COMPRESS_POINTS: bool;
+}
+
 /// Obtain the generator point.
 pub trait Generator {
     /// Get the generator point for this elliptic curve
diff --git a/elliptic-curve/src/sec1.rs b/elliptic-curve/src/sec1.rs
index d59ab95a3..5445b0872 100644
--- a/elliptic-curve/src/sec1.rs
+++ b/elliptic-curve/src/sec1.rs
@@ -380,9 +380,7 @@ mod tests {
         type FieldSize = U32;
     }
 
-    impl weierstrass::Curve for ExampleCurve {
-        const COMPRESS_POINTS: bool = false;
-    }
+    impl weierstrass::Curve for ExampleCurve {}
 
     type EncodedPoint = super::EncodedPoint<ExampleCurve>;
 
diff --git a/elliptic-curve/src/weierstrass.rs b/elliptic-curve/src/weierstrass.rs
index c87a54ed2..ba05927ba 100644
--- a/elliptic-curve/src/weierstrass.rs
+++ b/elliptic-curve/src/weierstrass.rs
@@ -3,7 +3,4 @@
 pub mod point;
 
 /// Marker trait for elliptic curves in short Weierstrass form
-pub trait Curve: super::Curve {
-    /// Should point compression be applied by default?
-    const COMPRESS_POINTS: bool;
-}
+pub trait Curve: super::Curve {}