Fix clippy::identity_conversion

16 files changed, 49 insertions, 59 deletions

diff --git a/crates/ra_batch/src/lib.rs b/crates/ra_batch/src/lib.rs
index a4a8462de..a445dcb4d 100644
--- a/crates/ra_batch/src/lib.rs
+++ b/crates/ra_batch/src/lib.rs
@@ -34,10 +34,10 @@ impl salsa::Database for BatchDatabase {
 }
 
 fn vfs_file_to_id(f: ra_vfs::VfsFile) -> FileId {
-    FileId(f.0.into())
+    FileId(f.0)
 }
 fn vfs_root_to_id(r: ra_vfs::VfsRoot) -> SourceRootId {
-    SourceRootId(r.0.into())
+    SourceRootId(r.0)
 }
 
 impl BatchDatabase {
diff --git a/crates/ra_hir/src/adt.rs b/crates/ra_hir/src/adt.rs
index 45a12dd4d..38ff1d6f6 100644
--- a/crates/ra_hir/src/adt.rs
+++ b/crates/ra_hir/src/adt.rs
@@ -36,7 +36,7 @@ impl AdtDef {
 
 impl Struct {
     pub(crate) fn variant_data(&self, db: &impl DefDatabase) -> Arc<VariantData> {
-        db.struct_data((*self).into()).variant_data.clone()
+        db.struct_data(*self).variant_data.clone()
     }
 }
 
diff --git a/crates/ra_hir/src/impl_block.rs b/crates/ra_hir/src/impl_block.rs
index ba90e67e9..a0d3b33fe 100644
--- a/crates/ra_hir/src/impl_block.rs
+++ b/crates/ra_hir/src/impl_block.rs
@@ -202,7 +202,6 @@ impl ModuleImplBlocks {
         };
 
         let (file_id, module_source) = m.module.definition_source(db);
-        let file_id: HirFileId = file_id.into();
         let node = match &module_source {
             ModuleSource::SourceFile(node) => node.syntax(),
             ModuleSource::Module(node) => {
diff --git a/crates/ra_hir/src/nameres.rs b/crates/ra_hir/src/nameres.rs
index d649aa820..d822f7d93 100644
--- a/crates/ra_hir/src/nameres.rs
+++ b/crates/ra_hir/src/nameres.rs
@@ -468,7 +468,7 @@ impl CrateDefMap {
                     );
 
                     return ResolvePathResult::with(
-                        Either::Left(PerNs::types((*s).into())),
+                        Either::Left(PerNs::types(*s)),
                         ReachedFixedPoint::Yes,
                         Some(i),
                     );
diff --git a/crates/ra_hir/src/nameres/collector.rs b/crates/ra_hir/src/nameres/collector.rs
index 693c3fe8e..3bfef799d 100644
--- a/crates/ra_hir/src/nameres/collector.rs
+++ b/crates/ra_hir/src/nameres/collector.rs
@@ -556,7 +556,7 @@ where
 
     fn define_def(&mut self, def: &raw::DefData) {
         let module = Module { krate: self.def_collector.def_map.krate, module_id: self.module_id };
-        let ctx = LocationCtx::new(self.def_collector.db, module, self.file_id.into());
+        let ctx = LocationCtx::new(self.def_collector.db, module, self.file_id);
 
         macro_rules! def {
             ($kind:ident, $ast_id:ident) => {
diff --git a/crates/ra_hir/src/nameres/raw.rs b/crates/ra_hir/src/nameres/raw.rs
index 21935dbb9..a0afe282c 100644
--- a/crates/ra_hir/src/nameres/raw.rs
+++ b/crates/ra_hir/src/nameres/raw.rs
@@ -69,7 +69,7 @@ impl RawItems {
     ) -> (Arc<RawItems>, Arc<ImportSourceMap>) {
         let mut collector = RawItemsCollector {
             raw_items: RawItems::default(),
-            source_ast_id_map: db.ast_id_map(file_id.into()),
+            source_ast_id_map: db.ast_id_map(file_id),
             source_map: ImportSourceMap::default(),
         };
         if let Some(node) = db.parse_or_expand(file_id) {
diff --git a/crates/ra_hir/src/source_binder.rs b/crates/ra_hir/src/source_binder.rs
index 75ed2de6c..6a5799622 100644
--- a/crates/ra_hir/src/source_binder.rs
+++ b/crates/ra_hir/src/source_binder.rs
@@ -48,8 +48,8 @@ pub fn module_from_declaration(
 pub fn module_from_position(db: &impl HirDatabase, position: FilePosition) -> Option<Module> {
     let file = db.parse(position.file_id).tree;
     match find_node_at_offset::<ast::Module>(file.syntax(), position.offset) {
-        Some(m) if !m.has_semi() => module_from_inline(db, position.file_id.into(), m),
-        _ => module_from_file_id(db, position.file_id.into()),
+        Some(m) if !m.has_semi() => module_from_inline(db, position.file_id, m),
+        _ => module_from_file_id(db, position.file_id),
     }
 }
 
@@ -72,9 +72,9 @@ pub fn module_from_child_node(
     child: &SyntaxNode,
 ) -> Option<Module> {
     if let Some(m) = child.ancestors().filter_map(ast::Module::cast).find(|it| !it.has_semi()) {
-        module_from_inline(db, file_id.into(), m)
+        module_from_inline(db, file_id, m)
     } else {
-        module_from_file_id(db, file_id.into())
+        module_from_file_id(db, file_id)
     }
 }
 
@@ -99,14 +99,12 @@ pub fn struct_from_module(
     struct_def: &ast::StructDef,
 ) -> Struct {
     let (file_id, _) = module.definition_source(db);
-    let file_id = file_id.into();
     let ctx = LocationCtx::new(db, module, file_id);
     Struct { id: ctx.to_def(struct_def) }
 }
 
 pub fn enum_from_module(db: &impl HirDatabase, module: Module, enum_def: &ast::EnumDef) -> Enum {
     let (file_id, _) = module.definition_source(db);
-    let file_id = file_id.into();
     let ctx = LocationCtx::new(db, module, file_id);
     Enum { id: ctx.to_def(enum_def) }
 }
@@ -117,7 +115,6 @@ pub fn trait_from_module(
     trait_def: &ast::TraitDef,
 ) -> Trait {
     let (file_id, _) = module.definition_source(db);
-    let file_id = file_id.into();
     let ctx = LocationCtx::new(db, module, file_id);
     Trait { id: ctx.to_def(trait_def) }
 }
diff --git a/crates/ra_hir/src/ty/infer.rs b/crates/ra_hir/src/ty/infer.rs
index 58cfcd8a2..5edc59f18 100644
--- a/crates/ra_hir/src/ty/infer.rs
+++ b/crates/ra_hir/src/ty/infer.rs
@@ -539,7 +539,7 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
                 }
             })?;
 
-            resolved = Resolution::Def(item.into());
+            resolved = Resolution::Def(item);
         }
 
         match resolved {
@@ -762,7 +762,7 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
                     _ => &Ty::Unknown,
                 };
                 let subty = self.infer_pat(*pat, expectation, default_bm);
-                Ty::apply_one(TypeCtor::Ref(*mutability), subty.into())
+                Ty::apply_one(TypeCtor::Ref(*mutability), subty)
             }
             Pat::TupleStruct { path: ref p, args: ref subpats } => {
                 self.infer_tuple_struct_pat(p.as_ref(), subpats, expected, default_bm)
@@ -790,7 +790,7 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
 
                 let bound_ty = match mode {
                     BindingMode::Ref(mutability) => {
-                        Ty::apply_one(TypeCtor::Ref(mutability), inner_ty.clone().into())
+                        Ty::apply_one(TypeCtor::Ref(mutability), inner_ty.clone())
                     }
                     BindingMode::Move => inner_ty.clone(),
                 };
diff --git a/crates/ra_ide_api/src/call_info.rs b/crates/ra_ide_api/src/call_info.rs
index 0d1f92ca6..bd08e183d 100644
--- a/crates/ra_ide_api/src/call_info.rs
+++ b/crates/ra_ide_api/src/call_info.rs
@@ -21,8 +21,7 @@ pub(crate) fn call_info(db: &RootDatabase, position: FilePosition) -> Option<Cal
     let function = match calling_node {
         FnCallNode::CallExpr(expr) => {
             //FIXME: apply subst
-            let (callable_def, _subst) =
-                analyzer.type_of(db, expr.expr()?.into())?.as_callable()?;
+            let (callable_def, _subst) = analyzer.type_of(db, expr.expr()?)?.as_callable()?;
             match callable_def {
                 hir::CallableDef::Function(it) => it,
                 //FIXME: handle other callables
diff --git a/crates/ra_ide_api/src/typing.rs b/crates/ra_ide_api/src/typing.rs
index 63bc0cf88..3e35d8352 100644
--- a/crates/ra_ide_api/src/typing.rs
+++ b/crates/ra_ide_api/src/typing.rs
@@ -110,7 +110,7 @@ pub(crate) fn on_dot_typed(db: &RootDatabase, position: FilePosition) -> Option<
     let mut edit = TextEditBuilder::default();
     edit.replace(
         TextRange::from_to(position.offset - current_indent_len, position.offset),
-        target_indent.into(),
+        target_indent,
     );
 
     let res = SourceChange::source_file_edit_from("reindent dot", position.file_id, edit.finish())
diff --git a/crates/ra_lsp_server/src/cargo_target_spec.rs b/crates/ra_lsp_server/src/cargo_target_spec.rs
index 742361155..082ac8609 100644
--- a/crates/ra_lsp_server/src/cargo_target_spec.rs
+++ b/crates/ra_lsp_server/src/cargo_target_spec.rs
@@ -64,7 +64,7 @@ impl CargoTargetSpec {
             None => return Ok(None),
         };
         let file_id = world.analysis().crate_root(crate_id)?;
-        let path = world.vfs.read().file2path(ra_vfs::VfsFile(file_id.0.into()));
+        let path = world.vfs.read().file2path(ra_vfs::VfsFile(file_id.0));
         let res = world.workspaces.iter().find_map(|ws| match ws {
             project_model::ProjectWorkspace::Cargo { cargo, .. } => {
                 let tgt = cargo.target_by_root(&path)?;
diff --git a/crates/ra_lsp_server/src/main_loop.rs b/crates/ra_lsp_server/src/main_loop.rs
index 6080a3a4e..090fb9b1b 100644
--- a/crates/ra_lsp_server/src/main_loop.rs
+++ b/crates/ra_lsp_server/src/main_loop.rs
@@ -384,7 +384,7 @@ fn on_notification(
             if let Some(file_id) =
                 state.vfs.write().add_file_overlay(&path, params.text_document.text)
             {
-                subs.add_sub(FileId(file_id.0.into()));
+                subs.add_sub(FileId(file_id.0));
             }
             return Ok(());
         }
@@ -406,7 +406,7 @@ fn on_notification(
             let uri = params.text_document.uri;
             let path = uri.to_file_path().map_err(|()| format_err!("invalid uri: {}", uri))?;
             if let Some(file_id) = state.vfs.write().remove_file_overlay(path.as_path()) {
-                subs.remove_sub(FileId(file_id.0.into()));
+                subs.remove_sub(FileId(file_id.0));
             }
             let params = req::PublishDiagnosticsParams { uri, diagnostics: Vec::new() };
             let not = RawNotification::new::<req::PublishDiagnostics>(&params);
diff --git a/crates/ra_lsp_server/src/world.rs b/crates/ra_lsp_server/src/world.rs
index e0d2f6306..cd8df4fdb 100644
--- a/crates/ra_lsp_server/src/world.rs
+++ b/crates/ra_lsp_server/src/world.rs
@@ -60,14 +60,14 @@ impl WorldState {
         for r in vfs_roots {
             let vfs_root_path = vfs.root2path(r);
             let is_local = folder_roots.iter().any(|it| vfs_root_path.starts_with(it));
-            change.add_root(SourceRootId(r.0.into()), is_local);
+            change.add_root(SourceRootId(r.0), is_local);
         }
 
         // Create crate graph from all the workspaces
         let mut crate_graph = CrateGraph::default();
         let mut load = |path: &std::path::Path| {
             let vfs_file = vfs.load(path);
-            vfs_file.map(|f| FileId(f.0.into()))
+            vfs_file.map(|f| FileId(f.0))
         };
         for ws in workspaces.iter() {
             crate_graph.extend(ws.to_crate_graph(&mut load));
@@ -105,29 +105,24 @@ impl WorldState {
                     if is_local {
                         self.roots_to_scan -= 1;
                         for (file, path, text) in files {
-                            change.add_file(
-                                SourceRootId(root.0.into()),
-                                FileId(file.0.into()),
-                                path,
-                                text,
-                            );
+                            change.add_file(SourceRootId(root.0), FileId(file.0), path, text);
                         }
                     } else {
                         let files = files
                             .into_iter()
-                            .map(|(vfsfile, path, text)| (FileId(vfsfile.0.into()), path, text))
+                            .map(|(vfsfile, path, text)| (FileId(vfsfile.0), path, text))
                             .collect();
-                        libs.push((SourceRootId(root.0.into()), files));
+                        libs.push((SourceRootId(root.0), files));
                     }
                 }
                 VfsChange::AddFile { root, file, path, text } => {
-                    change.add_file(SourceRootId(root.0.into()), FileId(file.0.into()), path, text);
+                    change.add_file(SourceRootId(root.0), FileId(file.0), path, text);
                 }
                 VfsChange::RemoveFile { root, file, path } => {
-                    change.remove_file(SourceRootId(root.0.into()), FileId(file.0.into()), path)
+                    change.remove_file(SourceRootId(root.0), FileId(file.0), path)
                 }
                 VfsChange::ChangeFile { file, text } => {
-                    change.change_file(FileId(file.0.into()), text);
+                    change.change_file(FileId(file.0), text);
                 }
             }
         }
@@ -178,18 +173,18 @@ impl WorldSnapshot {
                 message: "Rust file outside current workspace is not supported yet.".to_string(),
             })
         })?;
-        Ok(FileId(file.0.into()))
+        Ok(FileId(file.0))
     }
 
     pub fn file_id_to_uri(&self, id: FileId) -> Result<Url> {
-        let path = self.vfs.read().file2path(VfsFile(id.0.into()));
+        let path = self.vfs.read().file2path(VfsFile(id.0));
         let url = Url::from_file_path(&path)
             .map_err(|_| format_err!("can't convert path to url: {}", path.display()))?;
         Ok(url)
     }
 
     pub fn path_to_uri(&self, root: SourceRootId, path: &RelativePathBuf) -> Result<Url> {
-        let base = self.vfs.read().root2path(VfsRoot(root.0.into()));
+        let base = self.vfs.read().root2path(VfsRoot(root.0));
         let path = path.to_path(base);
         let url = Url::from_file_path(&path)
             .map_err(|_| format_err!("can't convert path to url: {}", path.display()))?;
@@ -212,7 +207,7 @@ impl WorldSnapshot {
     }
 
     pub fn workspace_root_for(&self, file_id: FileId) -> Option<&Path> {
-        let path = self.vfs.read().file2path(VfsFile(file_id.0.into()));
+        let path = self.vfs.read().file2path(VfsFile(file_id.0));
         self.workspaces.iter().find_map(|ws| ws.workspace_root_for(&path))
     }
 }
diff --git a/crates/ra_mbe/src/mbe_expander.rs b/crates/ra_mbe/src/mbe_expander.rs
index a0bd0c5f8..7cfb47f7a 100644
--- a/crates/ra_mbe/src/mbe_expander.rs
+++ b/crates/ra_mbe/src/mbe_expander.rs
@@ -206,48 +206,48 @@ fn match_lhs(pattern: &crate::Subtree, input: &mut TtCursor) -> Result<Bindings,
                         "path" => {
                             let path =
                                 input.eat_path().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(path.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(path));
                         }
                         "expr" => {
                             let expr =
                                 input.eat_expr().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(expr.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(expr));
                         }
                         "ty" => {
                             let ty = input.eat_ty().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(ty.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(ty));
                         }
                         "pat" => {
                             let pat = input.eat_pat().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(pat.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(pat));
                         }
                         "stmt" => {
                             let pat = input.eat_stmt().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(pat.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(pat));
                         }
                         "block" => {
                             let block =
                                 input.eat_block().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(block.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(block));
                         }
                         "meta" => {
                             let meta =
                                 input.eat_meta().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(meta.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(meta));
                         }
                         "tt" => {
                             let token = input.eat().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(token.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(token));
                         }
                         "item" => {
                             let item =
                                 input.eat_item().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(item.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(item));
                         }
                         "lifetime" => {
                             let lifetime =
                                 input.eat_lifetime().ok_or(ExpandError::UnexpectedToken)?.clone();
-                            res.inner.insert(text.clone(), Binding::Simple(lifetime.into()));
+                            res.inner.insert(text.clone(), Binding::Simple(lifetime));
                         }
                         "literal" => {
                             let literal =
@@ -262,7 +262,7 @@ fn match_lhs(pattern: &crate::Subtree, input: &mut TtCursor) -> Result<Bindings,
                             // `vis` is optional
                             if let Some(vis) = input.try_eat_vis() {
                                 let vis = vis.clone();
-                                res.inner.insert(text.clone(), Binding::Simple(vis.into()));
+                                res.inner.insert(text.clone(), Binding::Simple(vis));
                             } else {
                                 res.push_optional(&text);
                             }
@@ -452,7 +452,7 @@ fn expand_tt(
 
                 let idx = ctx.nesting.pop().unwrap();
                 ctx.nesting.push(idx + 1);
-                token_trees.push(reduce_single_token(t).into());
+                token_trees.push(reduce_single_token(t));
 
                 if let Some(ref sep) = repeat.separator {
                     match sep {
diff --git a/crates/ra_mbe/src/syntax_bridge.rs b/crates/ra_mbe/src/syntax_bridge.rs
index e3f93b23c..9d3d2ad5b 100644
--- a/crates/ra_mbe/src/syntax_bridge.rs
+++ b/crates/ra_mbe/src/syntax_bridge.rs
@@ -155,9 +155,10 @@ fn convert_doc_comment<'a>(token: &ra_syntax::SyntaxToken<'a>) -> Option<Vec<tt:
     if let ast::CommentPlacement::Inner = doc {
         token_trees.push(mk_punct('!'));
     }
-    token_trees.push(tt::TokenTree::from(tt::Subtree::from(
-        tt::Subtree { delimiter: tt::Delimiter::Bracket, token_trees: meta_tkns }.into(),
-    )));
+    token_trees.push(tt::TokenTree::from(tt::Subtree {
+        delimiter: tt::Delimiter::Bracket,
+        token_trees: meta_tkns,
+    }));
 
     return Some(token_trees);
 
diff --git a/crates/ra_project_model/src/cargo_workspace.rs b/crates/ra_project_model/src/cargo_workspace.rs
index 71976071f..5a1657788 100644
--- a/crates/ra_project_model/src/cargo_workspace.rs
+++ b/crates/ra_project_model/src/cargo_workspace.rs
@@ -137,7 +137,7 @@ impl CargoWorkspace {
         for meta_pkg in meta.packages {
             let is_member = ws_members.contains(&meta_pkg.id);
             let pkg = packages.alloc(PackageData {
-                name: meta_pkg.name.into(),
+                name: meta_pkg.name,
                 manifest: meta_pkg.manifest_path.clone(),
                 targets: Vec::new(),
                 is_member,
@@ -149,7 +149,7 @@ impl CargoWorkspace {
             for meta_tgt in meta_pkg.targets {
                 let tgt = targets.alloc(TargetData {
                     pkg,
-                    name: meta_tgt.name.into(),
+                    name: meta_tgt.name,
                     root: meta_tgt.src_path.clone(),
                     kind: TargetKind::new(meta_tgt.kind.as_slice()),
                 });
@@ -160,8 +160,7 @@ impl CargoWorkspace {
         for node in resolve.nodes {
             let source = pkg_by_id[&node.id];
             for dep_node in node.deps {
-                let dep =
-                    PackageDependency { name: dep_node.name.into(), pkg: pkg_by_id[&dep_node.pkg] };
+                let dep = PackageDependency { name: dep_node.name, pkg: pkg_by_id[&dep_node.pkg] };
                 packages[source].dependencies.push(dep);
             }
         }