From fb247732ccd952d2abe627b741171b49f3702338 Mon Sep 17 00:00:00 2001
From: Rob Rix <rob.rix@github.com>
Date: Thu, 1 Oct 2015 11:34:17 -0400
Subject: [PATCH] Move diff equality into Diff.swift.

---
 prototype/Doubt/Diff.swift      | 12 ++++++++++++
 prototype/Doubt/Equatable.swift | 11 -----------
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/prototype/Doubt/Diff.swift b/prototype/Doubt/Diff.swift
index dc5a05ff8..adac9fd12 100644
--- a/prototype/Doubt/Diff.swift
+++ b/prototype/Doubt/Diff.swift
@@ -111,3 +111,15 @@ public enum Diff: Comparable, CustomDebugStringConvertible, CustomDocConvertible
 		return Array(diff(Stream(sequence: a), Stream(sequence: b)).map { $0.0 })
 	}
 }
+
+
+public func == (left: Diff, right: Diff) -> Bool {
+	switch (left, right) {
+	case let (.Patch(a1, b1), .Patch(a2, b2)):
+		return a1 == a2 && b1 == b2
+	case let (.Copy(a), .Copy(b)):
+		return a == b
+	default:
+		return false
+	}
+}
diff --git a/prototype/Doubt/Equatable.swift b/prototype/Doubt/Equatable.swift
index 6d2bec8bc..2fe22f9b8 100644
--- a/prototype/Doubt/Equatable.swift
+++ b/prototype/Doubt/Equatable.swift
@@ -19,17 +19,6 @@ public func == <F: Equatable, A: Equatable> (left: Syntax<F, A>, right: Syntax<F
 	return equals(left, right, ==)
 }
 
-public func == (left: Diff, right: Diff) -> Bool {
-	switch (left, right) {
-	case let (.Patch(a1, b1), .Patch(a2, b2)):
-		return a1 == a2 && b1 == b2
-	case let (.Copy(a), .Copy(b)):
-		return a == b
-	default:
-		return false
-	}
-}
-
 public func == (left: Doc, right: Doc) -> Bool {
 	switch (left, right) {
 	case (.Empty, .Empty), (.Line, .Line):