From c402b007a3272efada7924fce4eecf698b98968b Mon Sep 17 00:00:00 2001
From: DJMcNab <36049421+DJMcNab@users.noreply.github.com>
Date: Sun, 30 Dec 2018 18:14:55 +0000
Subject: Move renames into ra_analysis

---
 crates/ra_analysis/src/imp.rs                  | 26 ++++++++++++++++++++++++--
 crates/ra_analysis/src/lib.rs                  |  7 +++++++
 crates/ra_lsp_server/src/main_loop/handlers.rs | 21 ++++++++-------------
 3 files changed, 39 insertions(+), 15 deletions(-)

diff --git a/crates/ra_analysis/src/imp.rs b/crates/ra_analysis/src/imp.rs
index bff2e00c9..5ed374c79 100644
--- a/crates/ra_analysis/src/imp.rs
+++ b/crates/ra_analysis/src/imp.rs
@@ -288,7 +288,11 @@ impl AnalysisImpl {
             Some(it) => it,
         };
 
-        let mut ret = vec![(position.file_id, binding.syntax().range())];
+        let mut ret = binding
+            .name()
+            .into_iter()
+            .map(|name| (position.file_id, name.syntax().range()))
+            .collect::<Vec<_>>();
         ret.extend(
             descr
                 .scopes(&*self.db)
@@ -505,7 +509,25 @@ impl AnalysisImpl {
         let infer = function.infer(&*self.db)?;
         Ok(infer.type_of_node(node).map(|t| t.to_string()))
     }
-
+    pub fn rename(
+        &self,
+        position: FilePosition,
+        new_name: &str,
+    ) -> Cancelable<Vec<SourceFileEdit>> {
+        let res = self
+            .find_all_refs(position)?
+            .iter()
+            .map(|(file_id, text_range)| SourceFileEdit {
+                file_id: *file_id,
+                edit: {
+                    let mut builder = ra_text_edit::TextEditBuilder::new();
+                    builder.replace(*text_range, new_name.into());
+                    builder.finish()
+                },
+            })
+            .collect::<Vec<_>>();
+        Ok(res)
+    }
     fn index_resolve(&self, name_ref: ast::NameRef) -> Cancelable<Vec<(FileId, FileSymbol)>> {
         let name = name_ref.text();
         let mut query = Query::new(name.to_string());
diff --git a/crates/ra_analysis/src/lib.rs b/crates/ra_analysis/src/lib.rs
index 9f5e9f358..e56168510 100644
--- a/crates/ra_analysis/src/lib.rs
+++ b/crates/ra_analysis/src/lib.rs
@@ -367,6 +367,13 @@ impl Analysis {
     pub fn type_of(&self, frange: FileRange) -> Cancelable<Option<String>> {
         self.imp.type_of(frange)
     }
+    pub fn rename(
+        &self,
+        position: FilePosition,
+        new_name: &str,
+    ) -> Cancelable<Vec<SourceFileEdit>> {
+        self.imp.rename(position, new_name)
+    }
 }
 
 pub struct LibraryData {
diff --git a/crates/ra_lsp_server/src/main_loop/handlers.rs b/crates/ra_lsp_server/src/main_loop/handlers.rs
index a2c12a4c1..3b7a14a5c 100644
--- a/crates/ra_lsp_server/src/main_loop/handlers.rs
+++ b/crates/ra_lsp_server/src/main_loop/handlers.rs
@@ -557,24 +557,19 @@ pub fn handle_rename(world: ServerWorld, params: RenameParams) -> Result<Option<
         .into());
     }
 
-    let refs = world
+    let renames = world
         .analysis()
-        .find_all_refs(FilePosition { file_id, offset })?;
-    if refs.is_empty() {
+        .rename(FilePosition { file_id, offset }, &*params.new_name)?;
+    if renames.is_empty() {
         return Ok(None);
     }
 
     let mut changes = HashMap::new();
-    for r in refs {
-        if let Ok(loc) = to_location(r.0, r.1, &world, &line_index) {
-            changes
-                .entry(loc.uri)
-                .or_insert_with(Vec::new)
-                .push(TextEdit {
-                    range: loc.range,
-                    new_text: params.new_name.clone(),
-                });
-        }
+    for edit in renames {
+        changes
+            .entry(file_id.try_conv_with(&world)?)
+            .or_insert_with(Vec::new)
+            .extend(edit.edit.conv_with(&line_index));
     }
 
     Ok(Some(WorkspaceEdit {
-- 
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