From fe53b282500f32c2d0cc1dfee1d7ccddfedac583 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Mon, 7 Jan 2019 17:00:39 +0300
Subject: migrate ra_db to new rowan

---
 crates/ra_db/src/lib.rs        |  8 ++++----
 crates/ra_db/src/syntax_ptr.rs | 12 ++++++------
 crates/ra_syntax/src/yellow.rs | 11 ++++++++++-
 3 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/crates/ra_db/src/lib.rs b/crates/ra_db/src/lib.rs
index 7181f2950..3c41ee56d 100644
--- a/crates/ra_db/src/lib.rs
+++ b/crates/ra_db/src/lib.rs
@@ -8,7 +8,7 @@ pub mod mock;
 use std::sync::Arc;
 
 use ra_editor::LineIndex;
-use ra_syntax::{TextUnit, TextRange, SourceFileNode};
+use ra_syntax::{TextUnit, TextRange, SourceFile, TreePtr};
 
 pub use crate::{
     cancelation::{Canceled, Cancelable},
@@ -47,7 +47,7 @@ pub trait BaseDatabase: salsa::Database {
 
 salsa::query_group! {
     pub trait SyntaxDatabase: crate::input::FilesDatabase + BaseDatabase {
-        fn source_file(file_id: FileId) -> SourceFileNode {
+        fn source_file(file_id: FileId) -> TreePtr<SourceFile> {
             type SourceFileQuery;
         }
         fn file_lines(file_id: FileId) -> Arc<LineIndex> {
@@ -56,9 +56,9 @@ salsa::query_group! {
     }
 }
 
-fn source_file(db: &impl SyntaxDatabase, file_id: FileId) -> SourceFileNode {
+fn source_file(db: &impl SyntaxDatabase, file_id: FileId) -> TreePtr<SourceFile> {
     let text = db.file_text(file_id);
-    SourceFileNode::parse(&*text)
+    SourceFile::parse(&*text)
 }
 fn file_lines(db: &impl SyntaxDatabase, file_id: FileId) -> Arc<LineIndex> {
     let text = db.file_text(file_id);
diff --git a/crates/ra_db/src/syntax_ptr.rs b/crates/ra_db/src/syntax_ptr.rs
index 5bfcedf2b..be64d417c 100644
--- a/crates/ra_db/src/syntax_ptr.rs
+++ b/crates/ra_db/src/syntax_ptr.rs
@@ -1,4 +1,4 @@
-use ra_syntax::{SourceFileNode, SyntaxKind, SyntaxNode, SyntaxNodeRef, TextRange};
+use ra_syntax::{AstNode, SourceFile, SyntaxKind, SyntaxNode, TextRange, TreePtr};
 
 /// A pointer to a syntax node inside a file.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
@@ -8,18 +8,18 @@ pub struct LocalSyntaxPtr {
 }
 
 impl LocalSyntaxPtr {
-    pub fn new(node: SyntaxNodeRef) -> LocalSyntaxPtr {
+    pub fn new(node: &SyntaxNode) -> LocalSyntaxPtr {
         LocalSyntaxPtr {
             range: node.range(),
             kind: node.kind(),
         }
     }
 
-    pub fn resolve(self, file: &SourceFileNode) -> SyntaxNode {
+    pub fn resolve(self, file: &SourceFile) -> TreePtr<SyntaxNode> {
         let mut curr = file.syntax();
         loop {
             if curr.range() == self.range && curr.kind() == self.kind {
-                return curr.owned();
+                return curr.to_owned();
             }
             curr = curr
                 .children()
@@ -40,7 +40,7 @@ impl LocalSyntaxPtr {
 #[test]
 fn test_local_syntax_ptr() {
     use ra_syntax::{ast, AstNode};
-    let file = SourceFileNode::parse("struct Foo { f: u32, }");
+    let file = SourceFile::parse("struct Foo { f: u32, }");
     let field = file
         .syntax()
         .descendants()
@@ -48,5 +48,5 @@ fn test_local_syntax_ptr() {
         .unwrap();
     let ptr = LocalSyntaxPtr::new(field.syntax());
     let field_syntax = ptr.resolve(&file);
-    assert_eq!(field.syntax(), field_syntax);
+    assert_eq!(field.syntax(), &*field_syntax);
 }
diff --git a/crates/ra_syntax/src/yellow.rs b/crates/ra_syntax/src/yellow.rs
index 38e680a9c..f31efa174 100644
--- a/crates/ra_syntax/src/yellow.rs
+++ b/crates/ra_syntax/src/yellow.rs
@@ -20,7 +20,7 @@ impl Types for RaTypes {
 
 pub type GreenNode = rowan::GreenNode<RaTypes>;
 
-#[derive(Clone, PartialEq, Eq, Hash)]
+#[derive(PartialEq, Eq, Hash)]
 pub struct TreePtr<T: TransparentNewType<Repr = rowan::SyntaxNode<RaTypes>>>(
     pub(crate) rowan::TreePtr<RaTypes, T>,
 );
@@ -47,6 +47,15 @@ where
     }
 }
 
+impl<T> Clone for TreePtr<T>
+where
+    T: TransparentNewType<Repr = rowan::SyntaxNode<RaTypes>>,
+{
+    fn clone(&self) -> TreePtr<T> {
+        TreePtr(self.0.clone())
+    }
+}
+
 impl<T> fmt::Debug for TreePtr<T>
 where
     T: TransparentNewType<Repr = rowan::SyntaxNode<RaTypes>>,
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