From 8345637cb9f21fdcfcaa13a48329137e5527a0d3 Mon Sep 17 00:00:00 2001
From: Martin Fischer <martin@push-f.com>
Date: Sun, 21 Nov 2021 21:36:15 +0100
Subject: auto-box all trait bounds, bump version to 0.3.2

---
 Cargo.toml              |  2 +-
 README.md               | 11 ++++++-----
 src/parse_assoc_type.rs |  4 ++--
 tests/tests.rs          |  2 +-
 4 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index d6fec25..51fed6e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "dynamize"
-version = "0.3.1"
+version = "0.3.2"
 description = "proc macro to make traits with associated types object-safe"
 authors = ["Martin Fischer <martin@push-f.com>"]
 license = "MIT"
diff --git a/README.md b/README.md
index 4a383fe..573c30b 100644
--- a/README.md
+++ b/README.md
@@ -72,12 +72,13 @@ automatically also implements `DynClient`!
 ## How does this actually work?
 
 The destination type of an associated type is
-determined by looking at its first trait bound:
+determined by looking at its trait bounds:
 
-* `Into<T>` is mapped to `T`
+* if the first trait bound is `Into<T>` the destination type is `T`
 
-* `SomeTrait` is mapped to `Box<dyn SomeTrait>`  
-  (for this `SomeTrait` of course needs to be object-safe)
+* otherwise the destination type is the boxed trait object of all trait bounds  
+  e.g. `Error + Send` becomes `Box<dyn Error + Send>`  
+  (for this the first trait bound needs to be object-safe)
 
 Dynamize can convert associated types in:
 
@@ -132,7 +133,7 @@ async functions in traits, you'll have to additionally use another library like
 #[blanket_impl_attr(async_trait)]
 #[async_trait]
 trait Client: Sync {
-    type Error: std::error::Error;
+    type Error: std::error::Error + Send;
 
     async fn get(&self, url: String) -> Result<Vec<u8>, Self::Error>;
 }
diff --git a/src/parse_assoc_type.rs b/src/parse_assoc_type.rs
index 048e58c..856735d 100644
--- a/src/parse_assoc_type.rs
+++ b/src/parse_assoc_type.rs
@@ -79,11 +79,11 @@ pub fn parse_assoc_type(
                 }
             }
         }
-        let path = &bound.path;
+        let bounds = &assoc_type.bounds;
         return Ok((
             &assoc_type.ident,
             DestType::Box(BoxType {
-                inner: quote! {dyn #path},
+                inner: quote! {dyn #bounds},
                 placeholder_lifetime: !lifetime_bounds(&assoc_type.bounds)
                     .any(|l| l.ident == "static"),
             }),
diff --git a/tests/tests.rs b/tests/tests.rs
index b326b4b..bae52bd 100644
--- a/tests/tests.rs
+++ b/tests/tests.rs
@@ -213,7 +213,7 @@ trait ReturnIter {
 
 #[dynamize::dynamize]
 trait FunIter {
-    type A: std::error::Error;
+    type A: std::error::Error + Send;
 
     fn foobar<F: Fn(&mut dyn Iterator<Item = Self::A>)>(&mut self, f: F);
 
-- 
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