wrap TreePtr

2 files changed, 54 insertions, 16 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 85818fa1e..6de46a5f3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -221,7 +221,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -284,7 +284,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -501,7 +501,7 @@ dependencies = [
  "num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -585,7 +585,7 @@ dependencies = [
  "pest_meta 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -970,7 +970,7 @@ dependencies = [
 [[package]]
 name = "rowan"
 version = "0.2.0"
-source = "git+https://github.com/rust-analyzer/rowan.git?branch=new-impl#688693ceec26b7be82918832c427b4bcb230fe24"
+source = "git+https://github.com/rust-analyzer/rowan.git?branch=new-impl#6b50db0f68a989c512e3bbebfbc8ede70ca7f221"
 dependencies = [
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "smol_str 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1075,7 +1075,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1140,7 +1140,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "syn"
-version = "0.15.23"
+version = "0.15.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1155,7 +1155,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1593,7 +1593,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 "checksum superslice 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b50b13d42370e0f5fc62eafdd5c2d20065eaf5458dab215ff3e20e63eea96b30"
-"checksum syn 0.15.23 (registry+https://github.com/rust-lang/crates.io-index)" = "9545a6a093a3f0bd59adb472700acc08cad3776f860f16a897dfce8c88721cbc"
+"checksum syn 0.15.24 (registry+https://github.com/rust-lang/crates.io-index)" = "734ecc29cd36e8123850d9bf21dfd62ef8300aaa8f879aabaa899721808be37c"
 "checksum synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "73687139bf99285483c96ac0add482c3776528beac1d97d444f6e91f203a2015"
 "checksum tempfile 3.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "7e91405c14320e5c79b3d148e1c86f40749a36e490642202a31689cb1a3452b2"
 "checksum tera 0.11.20 (registry+https://github.com/rust-lang/crates.io-index)" = "4b505279e19d8f7d24b1a9dc58327c9c36174b1a2c7ebdeac70792d017cb64f3"
diff --git a/crates/ra_syntax/src/yellow.rs b/crates/ra_syntax/src/yellow.rs
index 6dc846f33..38e680a9c 100644
--- a/crates/ra_syntax/src/yellow.rs
+++ b/crates/ra_syntax/src/yellow.rs
@@ -18,19 +18,56 @@ impl Types for RaTypes {
     type RootData = Vec<SyntaxError>;
 }
 
-pub type GreenNode = ::rowan::GreenNode<RaTypes>;
-pub type TreePtr<T> = ::rowan::TreePtr<RaTypes, T>;
+pub type GreenNode = rowan::GreenNode<RaTypes>;
+
+#[derive(Clone, PartialEq, Eq, Hash)]
+pub struct TreePtr<T: TransparentNewType<Repr = rowan::SyntaxNode<RaTypes>>>(
+    pub(crate) rowan::TreePtr<RaTypes, T>,
+);
+
+impl<T> TreePtr<T>
+where
+    T: TransparentNewType<Repr = rowan::SyntaxNode<RaTypes>>,
+{
+    pub(crate) fn cast<U>(this: TreePtr<T>) -> TreePtr<U>
+    where
+        U: TransparentNewType<Repr = rowan::SyntaxNode<RaTypes>>,
+    {
+        TreePtr(rowan::TreePtr::cast(this.0))
+    }
+}
+
+impl<T> std::ops::Deref for TreePtr<T>
+where
+    T: TransparentNewType<Repr = rowan::SyntaxNode<RaTypes>>,
+{
+    type Target = T;
+    fn deref(&self) -> &T {
+        self.0.deref()
+    }
+}
+
+impl<T> fmt::Debug for TreePtr<T>
+where
+    T: TransparentNewType<Repr = rowan::SyntaxNode<RaTypes>>,
+    T: fmt::Debug,
+{
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        fmt::Debug::fmt(&self.0, fmt)
+    }
+}
 
 #[derive(PartialEq, Eq, Hash)]
 #[repr(transparent)]
-pub struct SyntaxNode(pub(crate) ::rowan::SyntaxNode<RaTypes>);
+pub struct SyntaxNode(pub(crate) rowan::SyntaxNode<RaTypes>);
 unsafe impl TransparentNewType for SyntaxNode {
-    type Repr = ::rowan::SyntaxNode<RaTypes>;
+    type Repr = rowan::SyntaxNode<RaTypes>;
 }
 
 impl SyntaxNode {
     pub(crate) fn new(green: GreenNode, errors: Vec<SyntaxError>) -> TreePtr<SyntaxNode> {
-        TreePtr::cast(::rowan::SyntaxNode::new(green, errors))
+        let ptr = TreePtr(rowan::SyntaxNode::new(green, errors));
+        TreePtr::cast(ptr)
     }
 }
 
@@ -75,7 +112,8 @@ impl SyntaxNode {
         self.0.replace_self(replacement)
     }
     pub fn to_owned(&self) -> TreePtr<SyntaxNode> {
-        TreePtr::cast(self.0.to_owned())
+        let ptr = TreePtr(self.0.to_owned());
+        TreePtr::cast(ptr)
     }
     pub fn kind(&self) -> SyntaxKind {
         self.0.kind()
@@ -120,7 +158,7 @@ impl fmt::Debug for SyntaxNode {
 }
 
 #[derive(Debug)]
-pub struct SyntaxNodeChildren<'a>(::rowan::SyntaxNodeChildren<'a, RaTypes>);
+pub struct SyntaxNodeChildren<'a>(rowan::SyntaxNodeChildren<'a, RaTypes>);
 
 impl<'a> Iterator for SyntaxNodeChildren<'a> {
     type Item = &'a SyntaxNode;