From c5021c15a8a16d789711c8043562b5f52f607642 Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Thu, 28 Nov 2019 02:19:43 -0800
Subject: decoders are stateful, so decode functions should take them as a
 parameter

---
 src/lib.rs | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index b9f416c..c8996ee 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -159,22 +159,24 @@ impl Address for usize {
     fn to_linear(&self) -> usize { *self }
 }
 
-pub trait Decodable where Self: Sized {
-    fn decode<T: IntoIterator<Item=u8>>(bytes: T) -> Option<Self>;
-    fn decode_into<T: IntoIterator<Item=u8>>(&mut self, bytes: T) -> Option<()>;
+pub trait Decoder<Inst> where Inst: Sized {
+    fn decode<T: IntoIterator<Item=u8>>(&self, bytes: T) -> Option<Inst>;
+    fn decode_into<T: IntoIterator<Item=u8>>(&self, &mut Inst, bytes: T) -> Option<()>;
 }
 
 #[cfg(feature="use-serde")]
 pub trait Arch {
     type Address: Address + Debug + Hash + PartialEq + Eq + Serialize + for<'de> Deserialize<'de>;
-    type Instruction: Decodable + LengthedInstruction<Unit=Self::Address> + Debug;
+    type Instruction: LengthedInstruction<Unit=Self::Address> + Debug;
+    type Decoder: Decoder<Self::Instruction> + Default;
     type Operand;
 }
 
 #[cfg(not(feature="use-serde"))]
 pub trait Arch {
     type Address: Address + Debug + Hash + PartialEq + Eq;
-    type Instruction: Decodable + LengthedInstruction<Unit=Self::Address> + Debug;
+    type Instruction: LengthedInstruction<Unit=Self::Address> + Debug;
+    type Decoder: Decoder<Self::Instruction> + Default;
     type Operand;
 }
 
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