docs: move constructors back to top of rustdoc pages

Author: robjtede

src/futures/write/generic/decoder.rs

@@ -30,6 +30,16 @@ pin_project! {
     }
 }
 
+impl<W: AsyncWrite, D: Decode> Decoder<W, D> {
+    pub fn new(writer: W, decoder: D) -> Self {
+        Self {
+            writer: BufWriter::new(writer),
+            decoder,
+            state: State::Decoding,
+        }
+    }
+}
+
 impl<W, D> Decoder<W, D> {
     pub fn get_ref(&self) -> &W {
         self.writer.get_ref()
@@ -49,14 +59,6 @@ impl<W, D> Decoder<W, D> {
 }
 
 impl<W: AsyncWrite, D: Decode> Decoder<W, D> {
-    pub fn new(writer: W, decoder: D) -> Self {
-        Self {
-            writer: BufWriter::new(writer),
-            decoder,
-            state: State::Decoding,
-        }
-    }
-
     fn do_poll_write(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,

src/futures/write/macros/decoder.rs

@@ -12,6 +12,18 @@ macro_rules! decoder {
             }
         }
 
+        impl<$inner: futures_io::AsyncWrite> $name<$inner> {
+            /// Creates a new decoder which will take in compressed data and write it uncompressed
+            /// to the given stream.
+            pub fn new(read: $inner) -> $name<$inner> {
+                $name {
+                    inner: crate::futures::write::Decoder::new(read, crate::codec::$name::new()),
+                }
+            }
+
+            $($($inherent_methods)*)*
+        }
+
         impl<$inner> $name<$inner> {
             /// Acquires a reference to the underlying reader that this decoder is wrapping.
             pub fn get_ref(&self) -> &$inner {
@@ -45,18 +57,6 @@ macro_rules! decoder {
             }
         }
 
-        impl<$inner: futures_io::AsyncWrite> $name<$inner> {
-            /// Creates a new decoder which will take in compressed data and write it uncompressed
-            /// to the given stream.
-            pub fn new(read: $inner) -> $name<$inner> {
-                $name {
-                    inner: crate::futures::write::Decoder::new(read, crate::codec::$name::new()),
-                }
-            }
-
-            $($($inherent_methods)*)*
-        }
-
         impl<$inner: futures_io::AsyncWrite> futures_io::AsyncWrite for $name<$inner> {
             fn poll_write(
                 self: std::pin::Pin<&mut Self>,