use navigation target in API

crates/ra_analysis/src/imp.rs

@@ -205,7 +205,7 @@ impl AnalysisImpl {
 
     /// This returns `Vec` because a module may be included from several places. We
     /// don't handle this case yet though, so the Vec has length at most one.
-    pub fn parent_module(&self, position: FilePosition) -> Cancelable<Vec<(FileId, FileSymbol)>> {
+    pub fn parent_module(&self, position: FilePosition) -> Cancelable<Vec<NavigationTarget>> {
         let descr = match source_binder::module_from_position(&*self.db, position)? {
             None => return Ok(Vec::new()),
             Some(it) => it,
@@ -216,12 +216,12 @@ impl AnalysisImpl {
         };
         let decl = decl.borrowed();
         let decl_name = decl.name().unwrap();
-        let sym = FileSymbol {
+        let symbol = FileSymbol {
             name: decl_name.text(),
             node_range: decl_name.syntax().range(),
             kind: MODULE,
         };
-        Ok(vec![(file_id, sym)])
+        Ok(vec![NavigationTarget { file_id, symbol }])
     }
     /// Returns `Vec` for the same reason as `parent_module`
     pub fn crate_for(&self, file_id: FileId) -> Cancelable<Vec<CrateId>> {

crates/ra_analysis/src/lib.rs

@@ -24,7 +24,7 @@ mod macros;
 use std::{fmt, sync::Arc};
 
 use rustc_hash::FxHashMap;
-use ra_syntax::{SourceFileNode, TextRange, TextUnit};
+use ra_syntax::{SourceFileNode, TextRange, TextUnit, SmolStr, SyntaxKind};
 use ra_text_edit::TextEdit;
 use rayon::prelude::*;
 use relative_path::RelativePathBuf;
@@ -251,6 +251,12 @@ pub struct NavigationTarget {
 }
 
 impl NavigationTarget {
+    pub fn name(&self) -> SmolStr {
+        self.symbol.name.clone()
+    }
+    pub fn kind(&self) -> SyntaxKind {
+        self.symbol.kind
+    }
     pub fn file_id(&self) -> FileId {
         self.file_id
     }
@@ -337,8 +343,14 @@ impl Analysis {
         let file = self.imp.file_syntax(file_id);
         ra_editor::folding_ranges(&file)
     }
-    pub fn symbol_search(&self, query: Query) -> Cancelable<Vec<(FileId, FileSymbol)>> {
-        self.imp.world_symbols(query)
+    pub fn symbol_search(&self, query: Query) -> Cancelable<Vec<NavigationTarget>> {
+        let res = self
+            .imp
+            .world_symbols(query)?
+            .into_iter()
+            .map(|(file_id, symbol)| NavigationTarget { file_id, symbol })
+            .collect();
+        Ok(res)
     }
     pub fn approximately_resolve_symbol(
         &self,
@@ -352,7 +364,7 @@ impl Analysis {
     pub fn doc_text_for(&self, nav: NavigationTarget) -> Cancelable<Option<String>> {
         self.imp.doc_text_for(nav)
     }
-    pub fn parent_module(&self, position: FilePosition) -> Cancelable<Vec<(FileId, FileSymbol)>> {
+    pub fn parent_module(&self, position: FilePosition) -> Cancelable<Vec<NavigationTarget>> {
         self.imp.parent_module(position)
     }
     pub fn module_path(&self, position: FilePosition) -> Cancelable<Option<String>> {

crates/ra_lsp_server/src/conv.rs

@@ -2,7 +2,7 @@ use languageserver_types::{
     self, Location, Position, Range, SymbolKind, TextDocumentEdit, TextDocumentIdentifier,
     TextDocumentItem, TextDocumentPositionParams, Url, VersionedTextDocumentIdentifier, InsertTextFormat,
 };
-use ra_analysis::{FileId, FileSystemEdit, SourceChange, SourceFileEdit, FilePosition,FileRange,  CompletionItem, CompletionItemKind, InsertText};
+use ra_analysis::{FileId, FileSystemEdit, SourceChange, SourceFileEdit, FilePosition,FileRange,  CompletionItem, CompletionItemKind, InsertText, NavigationTarget};
 use ra_editor::{LineCol, LineIndex, translate_offset_with_edit};
 use ra_text_edit::{AtomTextEdit, TextEdit};
 use ra_syntax::{SyntaxKind, TextRange, TextUnit};
@@ -322,6 +322,15 @@ impl TryConvWith for FileSystemEdit {
     }
 }
 
+impl TryConvWith for &NavigationTarget {
+    type Ctx = ServerWorld;
+    type Output = Location;
+    fn try_conv_with(self, world: &ServerWorld) -> Result<Location> {
+        let line_index = world.analysis().file_line_index(self.file_id());
+        to_location(self.file_id(), self.range(), &world, &line_index)
+    }
+}
+
 pub fn to_location(
     file_id: FileId,
     range: TextRange,

crates/ra_lsp_server/src/main_loop/handlers.rs

@@ -188,12 +188,11 @@ pub fn handle_workspace_symbol(
 
     fn exec_query(world: &ServerWorld, query: Query) -> Result<Vec<SymbolInformation>> {
         let mut res = Vec::new();
-        for (file_id, symbol) in world.analysis().symbol_search(query)? {
-            let line_index = world.analysis().file_line_index(file_id);
+        for nav in world.analysis().symbol_search(query)? {
             let info = SymbolInformation {
-                name: symbol.name.to_string(),
-                kind: symbol.kind.conv(),
-                location: to_location(file_id, symbol.node_range, world, &line_index)?,
+                name: nav.name().into(),
+                kind: nav.kind().conv(),
+                location: nav.try_conv_with(world)?,
                 container_name: None,
                 deprecated: None,
             };
@@ -212,12 +211,11 @@ pub fn handle_goto_definition(
         None => return Ok(None),
         Some(it) => it,
     };
-    let mut res = Vec::new();
-    for nav in rr.resolves_to {
-        let line_index = world.analysis().file_line_index(nav.file_id());
-        let location = to_location(nav.file_id(), nav.range(), &world, &line_index)?;
-        res.push(location)
-    }
+    let res = rr
+        .resolves_to
+        .into_iter()
+        .map(|nav| nav.try_conv_with(&world))
+        .collect::<Result<Vec<_>>>()?;
     Ok(Some(req::GotoDefinitionResponse::Array(res)))
 }
 
@@ -226,13 +224,12 @@ pub fn handle_parent_module(
     params: req::TextDocumentPositionParams,
 ) -> Result<Vec<Location>> {
     let position = params.try_conv_with(&world)?;
-    let mut res = Vec::new();
-    for (file_id, symbol) in world.analysis().parent_module(position)? {
-        let line_index = world.analysis().file_line_index(file_id);
-        let location = to_location(file_id, symbol.node_range, &world, &line_index)?;
-        res.push(location);
-    }
-    Ok(res)
+    world
+        .analysis()
+        .parent_module(position)?
+        .into_iter()
+        .map(|nav| nav.try_conv_with(&world))
+        .collect::<Result<Vec<_>>>()
 }
 
 pub fn handle_runnables(