35 files changed, 267 insertions, 240 deletions

diff --git a/crates/ra_hir/src/adt.rs b/crates/ra_hir/src/adt.rs
index b3843b35c..9c0c8fdd0 100644
--- a/crates/ra_hir/src/adt.rs
+++ b/crates/ra_hir/src/adt.rs
@@ -3,16 +3,15 @@
 
 use std::sync::Arc;
 
-use ra_arena::{RawId, Arena, impl_arena_id};
+use ra_arena::{impl_arena_id, Arena, RawId};
 use ra_syntax::{
+    ast::{self, NameOwner, StructKind, TypeAscriptionOwner},
     TreeArc,
-    ast::{self, NameOwner, StructKind, TypeAscriptionOwner}
 };
 
 use crate::{
-    Name, AsName, Struct, Union, Enum, EnumVariant, Crate, AstDatabase,
-    HirDatabase, StructField, FieldSource, Source, HasSource,
-    type_ref::TypeRef, DefDatabase,
+    type_ref::TypeRef, AsName, AstDatabase, Crate, DefDatabase, Enum, EnumVariant, FieldSource,
+    HasSource, HirDatabase, Name, Source, Struct, StructField, Union,
 };
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
diff --git a/crates/ra_hir/src/code_model.rs b/crates/ra_hir/src/code_model.rs
index 75914ccb0..ed640d7fc 100644
--- a/crates/ra_hir/src/code_model.rs
+++ b/crates/ra_hir/src/code_model.rs
@@ -3,24 +3,32 @@ pub(crate) mod docs;
 
 use std::sync::Arc;
 
-use ra_db::{CrateId, SourceRootId, Edition, FileId};
-use ra_syntax::{ast::{self, NameOwner, TypeAscriptionOwner}, TreeArc};
+use ra_db::{CrateId, Edition, FileId, SourceRootId};
+use ra_syntax::{
+    ast::{self, NameOwner, TypeAscriptionOwner},
+    TreeArc,
+};
 
 use crate::{
-    Name, AsName, AstId, Ty, Either, KnownName, HasSource,
-    HirDatabase, DefDatabase, AstDatabase,
-    type_ref::TypeRef,
-    nameres::{ModuleScope, Namespace, ImportId, CrateModuleId},
-    expr::{Body, BodySourceMap, validation::ExprValidator},
-    ty::{TraitRef, InferenceResult, primitive::{IntTy, FloatTy, Signedness, IntBitness, FloatBitness}},
     adt::{EnumVariantId, StructFieldId, VariantDef},
+    diagnostics::DiagnosticSink,
+    expr::{validation::ExprValidator, Body, BodySourceMap},
     generics::HasGenericParams,
-    ids::{FunctionId, StructId, EnumId, AstItemDef, ConstId, StaticId, TraitId, TypeAliasId, MacroDefId},
+    ids::{
+        AstItemDef, ConstId, EnumId, FunctionId, MacroDefId, StaticId, StructId, TraitId,
+        TypeAliasId,
+    },
     impl_block::ImplBlock,
+    nameres::{CrateModuleId, ImportId, ModuleScope, Namespace},
     resolve::Resolver,
-    diagnostics::{DiagnosticSink},
-    traits::{TraitItem, TraitData},
+    traits::{TraitData, TraitItem},
+    ty::{
+        primitive::{FloatBitness, FloatTy, IntBitness, IntTy, Signedness},
+        InferenceResult, TraitRef,
+    },
     type_ref::Mutability,
+    type_ref::TypeRef,
+    AsName, AstDatabase, AstId, DefDatabase, Either, HasSource, HirDatabase, KnownName, Name, Ty,
 };
 
 /// hir::Crate describes a single crate. It's the main interface with which
diff --git a/crates/ra_hir/src/code_model/docs.rs b/crates/ra_hir/src/code_model/docs.rs
index da2b9b854..f696307a7 100644
--- a/crates/ra_hir/src/code_model/docs.rs
+++ b/crates/ra_hir/src/code_model/docs.rs
@@ -3,8 +3,8 @@ use std::sync::Arc;
 use ra_syntax::ast;
 
 use crate::{
-    HirDatabase, DefDatabase, AstDatabase, HasSource,
-    Module, StructField, Struct, Enum, EnumVariant, Static, Const, Function, Union, Trait, TypeAlias, FieldSource, MacroDef,
+    AstDatabase, Const, DefDatabase, Enum, EnumVariant, FieldSource, Function, HasSource,
+    HirDatabase, MacroDef, Module, Static, Struct, StructField, Trait, TypeAlias, Union,
 };
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
diff --git a/crates/ra_hir/src/code_model/src.rs b/crates/ra_hir/src/code_model/src.rs
index 5785d3b26..72451e0e7 100644
--- a/crates/ra_hir/src/code_model/src.rs
+++ b/crates/ra_hir/src/code_model/src.rs
@@ -1,9 +1,9 @@
-use ra_syntax::{TreeArc, ast};
+use ra_syntax::{ast, TreeArc};
 
 use crate::{
-    HirFileId, DefDatabase, AstDatabase, Module, ModuleSource,
-    StructField, Struct, Enum, Union, EnumVariant, Function, Static, Trait, Const, TypeAlias,
-    FieldSource, MacroDef, ids::AstItemDef,
+    ids::AstItemDef, AstDatabase, Const, DefDatabase, Enum, EnumVariant, FieldSource, Function,
+    HirFileId, MacroDef, Module, ModuleSource, Static, Struct, StructField, Trait, TypeAlias,
+    Union,
 };
 
 pub struct Source<T> {
diff --git a/crates/ra_hir/src/db.rs b/crates/ra_hir/src/db.rs
index eda22c0b0..a9c6c52d9 100644
--- a/crates/ra_hir/src/db.rs
+++ b/crates/ra_hir/src/db.rs
@@ -1,23 +1,25 @@
 use std::sync::Arc;
 
 use parking_lot::Mutex;
-use ra_syntax::{SyntaxNode, TreeArc, SmolStr, ast};
-use ra_db::{SourceDatabase, salsa};
+use ra_db::{salsa, SourceDatabase};
+use ra_syntax::{ast, SmolStr, SyntaxNode, TreeArc};
 
 use crate::{
-    HirFileId, MacroDefId, AstIdMap, ErasedFileAstId, Crate, Module, MacroCallLoc,
-    Function, FnData, ExprScopes, TypeAlias,
-    Struct, Enum, StructField,
-    Const, ConstData, Static,
-    DefWithBody, Trait,
+    adt::{EnumData, StructData},
+    generics::{GenericDef, GenericParams},
     ids,
-    nameres::{Namespace, ImportSourceMap, RawItems, CrateDefMap},
-    ty::{InferenceResult, Ty, method_resolution::CrateImplBlocks, TypableDef, CallableDef, FnSig, TypeCtor, GenericPredicate, Substs},
-    adt::{StructData, EnumData},
-    impl_block::{ModuleImplBlocks, ImplSourceMap, ImplBlock},
-    generics::{GenericParams, GenericDef},
+    impl_block::{ImplBlock, ImplSourceMap, ModuleImplBlocks},
+    lang_item::{LangItemTarget, LangItems},
+    nameres::{CrateDefMap, ImportSourceMap, Namespace, RawItems},
     traits::TraitData,
-    lang_item::{LangItems, LangItemTarget}, type_alias::TypeAliasData,
+    ty::{
+        method_resolution::CrateImplBlocks, CallableDef, FnSig, GenericPredicate, InferenceResult,
+        Substs, Ty, TypableDef, TypeCtor,
+    },
+    type_alias::TypeAliasData,
+    AstIdMap, Const, ConstData, Crate, DefWithBody, Enum, ErasedFileAstId, ExprScopes, FnData,
+    Function, HirFileId, MacroCallLoc, MacroDefId, Module, Static, Struct, StructField, Trait,
+    TypeAlias,
 };
 
 /// We store all interned things in the single QueryGroup.
diff --git a/crates/ra_hir/src/diagnostics.rs b/crates/ra_hir/src/diagnostics.rs
index 2557ef18e..f5f2e65f3 100644
--- a/crates/ra_hir/src/diagnostics.rs
+++ b/crates/ra_hir/src/diagnostics.rs
@@ -1,9 +1,9 @@
-use std::{fmt, any::Any};
+use std::{any::Any, fmt};
 
-use ra_syntax::{SyntaxNodePtr, TreeArc, AstPtr, TextRange, ast, SyntaxNode};
+use ra_syntax::{ast, AstPtr, SyntaxNode, SyntaxNodePtr, TextRange, TreeArc};
 use relative_path::RelativePathBuf;
 
-use crate::{HirFileId, HirDatabase, Name};
+use crate::{HirDatabase, HirFileId, Name};
 
 /// Diagnostic defines hir API for errors and warnings.
 ///
diff --git a/crates/ra_hir/src/expr.rs b/crates/ra_hir/src/expr.rs
index b1973d19d..d5b4ba6b6 100644
--- a/crates/ra_hir/src/expr.rs
+++ b/crates/ra_hir/src/expr.rs
@@ -3,19 +3,25 @@ use std::sync::Arc;
 
 use rustc_hash::FxHashMap;
 
-use ra_arena::{Arena, RawId, impl_arena_id, map::ArenaMap};
+use ra_arena::{impl_arena_id, map::ArenaMap, Arena, RawId};
 use ra_syntax::{
-    SyntaxNodePtr, AstPtr, AstNode,
-    ast::{self, TryBlockBodyOwner, LoopBodyOwner, ArgListOwner, NameOwner, LiteralKind,ArrayExprKind, TypeAscriptionOwner},
+    ast::{
+        self, ArgListOwner, ArrayExprKind, LiteralKind, LoopBodyOwner, NameOwner,
+        TryBlockBodyOwner, TypeAscriptionOwner,
+    },
+    AstNode, AstPtr, SyntaxNodePtr,
 };
 
 use crate::{
-    Path, Name, HirDatabase, Resolver,DefWithBody, Either, HirFileId, MacroCallLoc, MacroFileKind,
-    HasSource,
     name::AsName,
     type_ref::{Mutability, TypeRef},
+    DefWithBody, Either, HasSource, HirDatabase, HirFileId, MacroCallLoc, MacroFileKind, Name,
+    Path, Resolver,
+};
+use crate::{
+    path::GenericArgs,
+    ty::primitive::{FloatTy, IntTy, UncertainFloatTy, UncertainIntTy},
 };
-use crate::{path::GenericArgs, ty::primitive::{IntTy, UncertainIntTy, FloatTy, UncertainFloatTy}};
 
 pub use self::scope::ExprScopes;
 
@@ -249,8 +255,8 @@ pub enum Expr {
     Literal(Literal),
 }
 
-pub use ra_syntax::ast::PrefixOp as UnaryOp;
 pub use ra_syntax::ast::BinOp as BinaryOp;
+pub use ra_syntax::ast::PrefixOp as UnaryOp;
 #[derive(Debug, Clone, Eq, PartialEq)]
 pub enum Array {
     ElementList(Vec<ExprId>),
diff --git a/crates/ra_hir/src/expr/scope.rs b/crates/ra_hir/src/expr/scope.rs
index 83d226fc1..f27cc6e8d 100644
--- a/crates/ra_hir/src/expr/scope.rs
+++ b/crates/ra_hir/src/expr/scope.rs
@@ -1,12 +1,11 @@
 use std::sync::Arc;
 
+use ra_arena::{impl_arena_id, Arena, RawId};
 use rustc_hash::FxHashMap;
-use ra_arena::{Arena, RawId, impl_arena_id};
 
 use crate::{
-    Name, DefWithBody,
-    expr::{PatId, ExprId, Pat, Expr, Body, Statement},
-    HirDatabase,
+    expr::{Body, Expr, ExprId, Pat, PatId, Statement},
+    DefWithBody, HirDatabase, Name,
 };
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
@@ -173,10 +172,10 @@ fn compute_expr_scopes(expr: ExprId, body: &Body, scopes: &mut ExprScopes, scope
 #[cfg(test)]
 mod tests {
     use ra_db::SourceDatabase;
-    use ra_syntax::{algo::find_node_at_offset, AstNode, SyntaxNodePtr, ast};
-    use test_utils::{extract_offset, assert_eq_text};
+    use ra_syntax::{algo::find_node_at_offset, ast, AstNode, SyntaxNodePtr};
+    use test_utils::{assert_eq_text, extract_offset};
 
-    use crate::{source_binder::SourceAnalyzer, mock::MockDatabase};
+    use crate::{mock::MockDatabase, source_binder::SourceAnalyzer};
 
     fn do_check(code: &str, expected: &[&str]) {
         let (off, code) = extract_offset(code);
diff --git a/crates/ra_hir/src/expr/validation.rs b/crates/ra_hir/src/expr/validation.rs
index 534fd482b..8206dae2e 100644
--- a/crates/ra_hir/src/expr/validation.rs
+++ b/crates/ra_hir/src/expr/validation.rs
@@ -1,17 +1,16 @@
-use std::sync::Arc;
 use rustc_hash::FxHashSet;
+use std::sync::Arc;
 
 use ra_syntax::ast::{AstNode, StructLit};
 
+use super::{Expr, ExprId, StructLitField};
 use crate::{
-    expr::AstPtr,
-    HirDatabase, Function, Name, HasSource,
-    diagnostics::{DiagnosticSink, MissingFields},
     adt::AdtDef,
-    Path,
+    diagnostics::{DiagnosticSink, MissingFields},
+    expr::AstPtr,
     ty::InferenceResult,
+    Function, HasSource, HirDatabase, Name, Path,
 };
-use super::{Expr, StructLitField, ExprId};
 
 pub(crate) struct ExprValidator<'a, 'b: 'a> {
     func: Function,
diff --git a/crates/ra_hir/src/generics.rs b/crates/ra_hir/src/generics.rs
index 462b136b7..9929331d3 100644
--- a/crates/ra_hir/src/generics.rs
+++ b/crates/ra_hir/src/generics.rs
@@ -5,13 +5,14 @@
 
 use std::sync::Arc;
 
-use ra_syntax::ast::{self, NameOwner, TypeParamsOwner, TypeBoundsOwner, DefaultTypeParamOwner};
+use ra_syntax::ast::{self, DefaultTypeParamOwner, NameOwner, TypeBoundsOwner, TypeParamsOwner};
 
 use crate::{
-    HasSource,
-    Name, AsName, Function, Struct, Union, Enum, Trait, TypeAlias, ImplBlock, Container, AdtDef,
-    db::{HirDatabase, DefDatabase, AstDatabase},
-    path::Path, type_ref::TypeRef,
+    db::{AstDatabase, DefDatabase, HirDatabase},
+    path::Path,
+    type_ref::TypeRef,
+    AdtDef, AsName, Container, Enum, Function, HasSource, ImplBlock, Name, Struct, Trait,
+    TypeAlias, Union,
 };
 
 /// Data about a generic parameter (to a function, struct, impl, ...).
diff --git a/crates/ra_hir/src/ids.rs b/crates/ra_hir/src/ids.rs
index b7215ac03..bd1e2f2e6 100644
--- a/crates/ra_hir/src/ids.rs
+++ b/crates/ra_hir/src/ids.rs
@@ -3,14 +3,12 @@ use std::{
     sync::Arc,
 };
 
-use ra_db::{FileId, salsa};
-use ra_syntax::{TreeArc, AstNode, ast, SyntaxNode};
-use ra_prof::profile;
 use mbe::MacroRules;
+use ra_db::{salsa, FileId};
+use ra_prof::profile;
+use ra_syntax::{ast, AstNode, SyntaxNode, TreeArc};
 
-use crate::{
-    Module, DefDatabase, AstId, FileAstId, AstDatabase, Source, InternDatabase,
-};
+use crate::{AstDatabase, AstId, DefDatabase, FileAstId, InternDatabase, Module, Source};
 
 /// hir makes heavy use of ids: integer (u32) handlers to various things. You
 /// can think of id as a pointer (but without a lifetime) or a file descriptor
diff --git a/crates/ra_hir/src/impl_block.rs b/crates/ra_hir/src/impl_block.rs
index fb9daf1bf..ce134b27a 100644
--- a/crates/ra_hir/src/impl_block.rs
+++ b/crates/ra_hir/src/impl_block.rs
@@ -1,21 +1,21 @@
-use std::sync::Arc;
 use rustc_hash::FxHashMap;
+use std::sync::Arc;
 
-use ra_arena::{Arena, RawId, impl_arena_id, map::ArenaMap};
+use ra_arena::{impl_arena_id, map::ArenaMap, Arena, RawId};
 use ra_syntax::{
+    ast::{self, AstNode},
     AstPtr, SourceFile, TreeArc,
-    ast::{self, AstNode}
 };
 
 use crate::{
-    Const, TypeAlias, Function, HirFileId, AstDatabase, HasSource, Source,
-    HirDatabase, DefDatabase, TraitRef,
-    type_ref::TypeRef,
+    code_model::{Module, ModuleSource},
+    generics::HasGenericParams,
     ids::LocationCtx,
     resolve::Resolver,
     ty::Ty,
-    generics::HasGenericParams,
-    code_model::{Module, ModuleSource}
+    type_ref::TypeRef,
+    AstDatabase, Const, DefDatabase, Function, HasSource, HirDatabase, HirFileId, Source, TraitRef,
+    TypeAlias,
 };
 
 #[derive(Debug, Default, PartialEq, Eq)]
diff --git a/crates/ra_hir/src/lang_item.rs b/crates/ra_hir/src/lang_item.rs
index 48b60f2dd..f9fe47b0f 100644
--- a/crates/ra_hir/src/lang_item.rs
+++ b/crates/ra_hir/src/lang_item.rs
@@ -1,11 +1,11 @@
-use std::sync::Arc;
 use rustc_hash::FxHashMap;
+use std::sync::Arc;
 
-use ra_syntax::{SmolStr, TreeArc, ast::AttrsOwner};
+use ra_syntax::{ast::AttrsOwner, SmolStr, TreeArc};
 
 use crate::{
-    Crate, DefDatabase, Enum, Function, HirDatabase, ImplBlock, Module,
-    Static, Struct, Trait, ModuleDef, AstDatabase, HasSource
+    AstDatabase, Crate, DefDatabase, Enum, Function, HasSource, HirDatabase, ImplBlock, Module,
+    ModuleDef, Static, Struct, Trait,
 };
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
diff --git a/crates/ra_hir/src/lib.rs b/crates/ra_hir/src/lib.rs
index 5afd846f5..ec0676783 100644
--- a/crates/ra_hir/src/lib.rs
+++ b/crates/ra_hir/src/lib.rs
@@ -47,39 +47,33 @@ mod code_model;
 mod marks;
 
 use crate::{
-    db::{InternDatabase, AstDatabase, DefDatabase, HirDatabase},
+    db::{AstDatabase, DefDatabase, HirDatabase, InternDatabase},
+    ids::MacroFileKind,
     name::{AsName, KnownName},
-    source_id::{FileAstId, AstId},
     resolve::Resolver,
-    ids::MacroFileKind,
+    source_id::{AstId, FileAstId},
 };
 
 pub use self::{
-    either::Either,
-    path::{Path, PathKind},
-    name::Name,
-    source_id::{AstIdMap, ErasedFileAstId},
-    ids::{HirFileId, MacroDefId, MacroCallId, MacroCallLoc, MacroFile},
-    nameres::{PerNs, Namespace, ImportId},
-    ty::{Ty, ApplicationTy, TypeCtor, TraitRef, Substs, display::HirDisplay, CallableDef},
-    impl_block::{ImplBlock, ImplItem},
     adt::AdtDef,
+    either::Either,
     expr::ExprScopes,
+    generics::{GenericParam, GenericParams, HasGenericParams},
+    ids::{HirFileId, MacroCallId, MacroCallLoc, MacroDefId, MacroFile},
+    impl_block::{ImplBlock, ImplItem},
+    name::Name,
+    nameres::{ImportId, Namespace, PerNs},
+    path::{Path, PathKind},
     resolve::Resolution,
-    generics::{GenericParams, GenericParam, HasGenericParams},
-    source_binder::{SourceAnalyzer, PathResolution, ScopeEntryWithSyntax},
+    source_binder::{PathResolution, ScopeEntryWithSyntax, SourceAnalyzer},
+    source_id::{AstIdMap, ErasedFileAstId},
+    ty::{display::HirDisplay, ApplicationTy, CallableDef, Substs, TraitRef, Ty, TypeCtor},
 };
 
 pub use self::code_model::{
-    Crate, CrateDependency,
-    DefWithBody,
-    Module, ModuleDef, ModuleSource,
-    Struct, Union, Enum, EnumVariant,
-    Function, FnData,
-    StructField, FieldSource,
-    Static, Const, ConstData,
-    Trait, TypeAlias, MacroDef, Container,
-    BuiltinType,
-    src::{Source, HasSource},
-    docs::{Docs, Documentation, DocDef},
+    docs::{DocDef, Docs, Documentation},
+    src::{HasSource, Source},
+    BuiltinType, Const, ConstData, Container, Crate, CrateDependency, DefWithBody, Enum,
+    EnumVariant, FieldSource, FnData, Function, MacroDef, Module, ModuleDef, ModuleSource, Static,
+    Struct, StructField, Trait, TypeAlias, Union,
 };
diff --git a/crates/ra_hir/src/mock.rs b/crates/ra_hir/src/mock.rs
index c57dfbf01..b26ea58c9 100644
--- a/crates/ra_hir/src/mock.rs
+++ b/crates/ra_hir/src/mock.rs
@@ -1,13 +1,12 @@
-use std::{sync::Arc, panic};
+use std::{panic, sync::Arc};
 
 use parking_lot::Mutex;
 use ra_db::{
-    FilePosition, FileId, CrateGraph, SourceRoot, SourceRootId, SourceDatabase, salsa,
-    Edition,
+    salsa, CrateGraph, Edition, FileId, FilePosition, SourceDatabase, SourceRoot, SourceRootId,
 };
 use relative_path::RelativePathBuf;
-use test_utils::{parse_fixture, CURSOR_MARKER, extract_offset};
 use rustc_hash::FxHashMap;
+use test_utils::{extract_offset, parse_fixture, CURSOR_MARKER};
 
 use crate::{db, diagnostics::DiagnosticSink};
 
diff --git a/crates/ra_hir/src/nameres.rs b/crates/ra_hir/src/nameres.rs
index f4ca454e4..53ef8d58a 100644
--- a/crates/ra_hir/src/nameres.rs
+++ b/crates/ra_hir/src/nameres.rs
@@ -55,28 +55,24 @@ mod tests;
 
 use std::sync::Arc;
 
+use once_cell::sync::Lazy;
+use ra_arena::{impl_arena_id, Arena, RawId};
+use ra_db::{Edition, FileId};
+use ra_prof::profile;
+use ra_syntax::ast;
 use rustc_hash::{FxHashMap, FxHashSet};
-use ra_arena::{Arena, RawId, impl_arena_id};
-use ra_db::{FileId, Edition};
 use test_utils::tested_by;
-use ra_syntax::ast;
-use ra_prof::profile;
-use once_cell::sync::Lazy;
 
 use crate::{
-    ModuleDef, Name, Crate, Module, MacroDef, AsName, BuiltinType, AstDatabase,
-    DefDatabase, Path, PathKind, HirFileId, Trait,
-    ids::MacroDefId,
-    diagnostics::DiagnosticSink,
-    nameres::diagnostics::DefDiagnostic,
-    either::Either,
-    AstId,
+    diagnostics::DiagnosticSink, either::Either, ids::MacroDefId,
+    nameres::diagnostics::DefDiagnostic, AsName, AstDatabase, AstId, BuiltinType, Crate,
+    DefDatabase, HirFileId, MacroDef, Module, ModuleDef, Name, Path, PathKind, Trait,
 };
 
-pub(crate) use self::raw::{RawItems, ImportSourceMap};
+pub(crate) use self::raw::{ImportSourceMap, RawItems};
 
 pub use self::{
-    per_ns::{PerNs, Namespace},
+    per_ns::{Namespace, PerNs},
     raw::ImportId,
 };
 
@@ -512,14 +508,14 @@ impl CrateDefMap {
 }
 
 mod diagnostics {
+    use ra_syntax::{ast, AstPtr};
     use relative_path::RelativePathBuf;
-    use ra_syntax::{AstPtr, ast};
 
     use crate::{
-        AstId, DefDatabase, AstDatabase,
+        diagnostics::{DiagnosticSink, UnresolvedModule},
         nameres::CrateModuleId,
-        diagnostics::{DiagnosticSink, UnresolvedModule}
-};
+        AstDatabase, AstId, DefDatabase,
+    };
 
     #[derive(Debug, PartialEq, Eq)]
     pub(super) enum DefDiagnostic {
diff --git a/crates/ra_hir/src/nameres/collector.rs b/crates/ra_hir/src/nameres/collector.rs
index ef4d1ed70..2b07ebf4a 100644
--- a/crates/ra_hir/src/nameres/collector.rs
+++ b/crates/ra_hir/src/nameres/collector.rs
@@ -1,22 +1,19 @@
 use arrayvec::ArrayVec;
-use rustc_hash::FxHashMap;
-use relative_path::RelativePathBuf;
-use test_utils::tested_by;
 use ra_db::FileId;
 use ra_syntax::ast;
+use relative_path::RelativePathBuf;
+use rustc_hash::FxHashMap;
+use test_utils::tested_by;
 
 use crate::{
-    Function, Module, Struct, Union, Enum, Const, Static, Trait, TypeAlias, MacroDef,
-    DefDatabase, HirFileId, Name, Path,
-    KnownName, AstId,
+    either::Either,
+    ids::{AstItemDef, LocationCtx, MacroCallId, MacroCallLoc, MacroDefId, MacroFileKind},
     nameres::{
-        Resolution, PerNs, ModuleDef, ReachedFixedPoint, ResolveMode,
-        CrateDefMap, CrateModuleId, ModuleData, ItemOrMacro,
-        diagnostics::DefDiagnostic,
-        raw,
+        diagnostics::DefDiagnostic, raw, CrateDefMap, CrateModuleId, ItemOrMacro, ModuleData,
+        ModuleDef, PerNs, ReachedFixedPoint, Resolution, ResolveMode,
     },
-    ids::{AstItemDef, LocationCtx, MacroCallLoc, MacroCallId, MacroDefId, MacroFileKind},
-    either::Either,
+    AstId, Const, DefDatabase, Enum, Function, HirFileId, KnownName, MacroDef, Module, Name, Path,
+    Static, Struct, Trait, TypeAlias, Union,
 };
 
 pub(super) fn collect_defs(db: &impl DefDatabase, mut def_map: CrateDefMap) -> CrateDefMap {
@@ -666,9 +663,9 @@ fn resolve_submodule(
 mod tests {
     use ra_db::SourceDatabase;
 
-    use crate::{Crate, mock::MockDatabase, DefDatabase};
-    use ra_arena::{Arena};
     use super::*;
+    use crate::{mock::MockDatabase, Crate, DefDatabase};
+    use ra_arena::Arena;
     use rustc_hash::FxHashSet;
 
     fn do_collect_defs(
diff --git a/crates/ra_hir/src/nameres/raw.rs b/crates/ra_hir/src/nameres/raw.rs
index a0afe282c..7ea59cb75 100644
--- a/crates/ra_hir/src/nameres/raw.rs
+++ b/crates/ra_hir/src/nameres/raw.rs
@@ -1,13 +1,16 @@
-use std::{sync::Arc, ops::Index};
+use std::{ops::Index, sync::Arc};
 
-use test_utils::tested_by;
-use ra_arena::{Arena, impl_arena_id, RawId, map::ArenaMap};
+use ra_arena::{impl_arena_id, map::ArenaMap, Arena, RawId};
 use ra_syntax::{
-    AstNode, SourceFile, AstPtr, TreeArc,
-    ast::{self, NameOwner, AttrsOwner},
+    ast::{self, AttrsOwner, NameOwner},
+    AstNode, AstPtr, SourceFile, TreeArc,
 };
+use test_utils::tested_by;
 
-use crate::{DefDatabase, Name, AsName, Path, HirFileId, ModuleSource, AstIdMap, FileAstId, Either, AstDatabase};
+use crate::{
+    AsName, AstDatabase, AstIdMap, DefDatabase, Either, FileAstId, HirFileId, ModuleSource, Name,
+    Path,
+};
 
 /// `RawItems` is a set of top-level items in a file (except for impls).
 ///
diff --git a/crates/ra_hir/src/nameres/tests.rs b/crates/ra_hir/src/nameres/tests.rs
index adac814d9..953610b37 100644
--- a/crates/ra_hir/src/nameres/tests.rs
+++ b/crates/ra_hir/src/nameres/tests.rs
@@ -5,14 +5,14 @@ mod primitives;
 
 use std::sync::Arc;
 
+use insta::assert_snapshot_matches;
 use ra_db::SourceDatabase;
 use test_utils::covers;
-use insta::assert_snapshot_matches;
 
 use crate::{
-    Crate, Either,
-    mock::{MockDatabase, CrateGraphFixture},
+    mock::{CrateGraphFixture, MockDatabase},
     nameres::Resolution,
+    Crate, Either,
 };
 
 use super::*;
diff --git a/crates/ra_hir/src/path.rs b/crates/ra_hir/src/path.rs
index 67afd5027..bce9d2d4b 100644
--- a/crates/ra_hir/src/path.rs
+++ b/crates/ra_hir/src/path.rs
@@ -1,8 +1,11 @@
 use std::sync::Arc;
 
-use ra_syntax::{ast::{self, NameOwner}, AstNode};
+use ra_syntax::{
+    ast::{self, NameOwner},
+    AstNode,
+};
 
-use crate::{Name, AsName, type_ref::TypeRef};
+use crate::{type_ref::TypeRef, AsName, Name};
 
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct Path {
diff --git a/crates/ra_hir/src/resolve.rs b/crates/ra_hir/src/resolve.rs
index 7f8b3812c..fc981e9b3 100644
--- a/crates/ra_hir/src/resolve.rs
+++ b/crates/ra_hir/src/resolve.rs
@@ -4,16 +4,19 @@ use std::sync::Arc;
 use rustc_hash::{FxHashMap, FxHashSet};
 
 use crate::{
-    ModuleDef, Trait, MacroDef,
     code_model::Crate,
     db::HirDatabase,
-    name::{Name, KnownName},
-    nameres::{PerNs, CrateDefMap, CrateModuleId},
+    either::Either,
+    expr::{
+        scope::{ExprScopes, ScopeId},
+        PatId,
+    },
     generics::GenericParams,
-    expr::{scope::{ExprScopes, ScopeId}, PatId},
     impl_block::ImplBlock,
+    name::{KnownName, Name},
+    nameres::{CrateDefMap, CrateModuleId, PerNs},
     path::Path,
-    either::Either,
+    MacroDef, ModuleDef, Trait,
 };
 
 #[derive(Debug, Clone, Default)]
diff --git a/crates/ra_hir/src/source_binder.rs b/crates/ra_hir/src/source_binder.rs
index 08e86844d..429575fee 100644
--- a/crates/ra_hir/src/source_binder.rs
+++ b/crates/ra_hir/src/source_binder.rs
@@ -7,21 +7,25 @@
 /// purely for "IDE needs".
 use std::sync::Arc;
 
-use rustc_hash::{FxHashSet, FxHashMap};
 use ra_db::{FileId, FilePosition};
 use ra_syntax::{
-    SyntaxNode, AstPtr, TextUnit, SyntaxNodePtr, TextRange,
-    ast::{self, AstNode, NameOwner},
     algo::find_node_at_offset,
+    ast::{self, AstNode, NameOwner},
+    AstPtr,
     SyntaxKind::*,
+    SyntaxNode, SyntaxNodePtr, TextRange, TextUnit,
 };
+use rustc_hash::{FxHashMap, FxHashSet};
 
 use crate::{
-    HirDatabase, Function, Struct, Enum, Const, Static, Either, DefWithBody, PerNs, Name,
-    AsName, Module, HirFileId, Crate, Trait, Resolver, Ty, Path, MacroDef,
-    expr::{BodySourceMap, scope::{ScopeId, ExprScopes}},
+    expr,
+    expr::{
+        scope::{ExprScopes, ScopeId},
+        BodySourceMap,
+    },
     ids::LocationCtx,
-    expr, AstId,
+    AsName, AstId, Const, Crate, DefWithBody, Either, Enum, Function, HirDatabase, HirFileId,
+    MacroDef, Module, Name, Path, PerNs, Resolver, Static, Struct, Trait, Ty,
 };
 
 /// Locates the module by `FileId`. Picks topmost module in the file.
diff --git a/crates/ra_hir/src/source_id.rs b/crates/ra_hir/src/source_id.rs
index 986269e00..324b79824 100644
--- a/crates/ra_hir/src/source_id.rs
+++ b/crates/ra_hir/src/source_id.rs
@@ -1,9 +1,13 @@
-use std::{marker::PhantomData, sync::Arc, hash::{Hash, Hasher}};
+use std::{
+    hash::{Hash, Hasher},
+    marker::PhantomData,
+    sync::Arc,
+};
 
-use ra_arena::{Arena, RawId, impl_arena_id};
-use ra_syntax::{SyntaxNodePtr, TreeArc, SyntaxNode, AstNode, ast};
+use ra_arena::{impl_arena_id, Arena, RawId};
+use ra_syntax::{ast, AstNode, SyntaxNode, SyntaxNodePtr, TreeArc};
 
-use crate::{HirFileId, AstDatabase};
+use crate::{AstDatabase, HirFileId};
 
 /// `AstId` points to an AST node in any file.
 ///
diff --git a/crates/ra_hir/src/traits.rs b/crates/ra_hir/src/traits.rs
index f2950e1b2..fc0368303 100644
--- a/crates/ra_hir/src/traits.rs
+++ b/crates/ra_hir/src/traits.rs
@@ -1,13 +1,13 @@
 //! HIR for trait definitions.
 
-use std::sync::Arc;
 use rustc_hash::FxHashMap;
+use std::sync::Arc;
 
 use ra_syntax::ast::{self, NameOwner};
 
 use crate::{
-    Function, Const, TypeAlias, Name, DefDatabase, Trait, AstDatabase, Module, HasSource,
-    ids::LocationCtx, name::AsName,
+    ids::LocationCtx, name::AsName, AstDatabase, Const, DefDatabase, Function, HasSource, Module,
+    Name, Trait, TypeAlias,
 };
 
 #[derive(Debug, Clone, PartialEq, Eq)]
diff --git a/crates/ra_hir/src/ty.rs b/crates/ra_hir/src/ty.rs
index 842d49e1f..11afdc0f3 100644
--- a/crates/ra_hir/src/ty.rs
+++ b/crates/ra_hir/src/ty.rs
@@ -12,17 +12,20 @@ mod lower;
 mod infer;
 pub(crate) mod display;
 
-use std::sync::Arc;
 use std::ops::Deref;
+use std::sync::Arc;
 use std::{fmt, mem};
 
-use crate::{Name, AdtDef, type_ref::Mutability, db::HirDatabase, Trait, GenericParams, TypeAlias};
+use crate::{db::HirDatabase, type_ref::Mutability, AdtDef, GenericParams, Name, Trait, TypeAlias};
 use display::{HirDisplay, HirFormatter};
 
-pub(crate) use lower::{TypableDef, type_for_def, type_for_field, callable_item_sig, generic_predicates, generic_defaults};
-pub(crate) use infer::{infer_query, InferenceResult, InferTy};
-pub use lower::CallableDef;
 pub(crate) use autoderef::autoderef;
+pub(crate) use infer::{infer_query, InferTy, InferenceResult};
+pub use lower::CallableDef;
+pub(crate) use lower::{
+    callable_item_sig, generic_defaults, generic_predicates, type_for_def, type_for_field,
+    TypableDef,
+};
 pub(crate) use traits::ProjectionPredicate;
 
 /// A type constructor or type name: this might be something like the primitive
diff --git a/crates/ra_hir/src/ty/autoderef.rs b/crates/ra_hir/src/ty/autoderef.rs
index 1f443d49b..90c1ae630 100644
--- a/crates/ra_hir/src/ty/autoderef.rs
+++ b/crates/ra_hir/src/ty/autoderef.rs
@@ -7,8 +7,8 @@ use std::iter::successors;
 
 use log::{info, warn};
 
-use crate::{HirDatabase, Name, Resolver, HasGenericParams};
-use super::{traits::Solution, Ty, Canonical};
+use super::{traits::Solution, Canonical, Ty};
+use crate::{HasGenericParams, HirDatabase, Name, Resolver};
 
 const AUTODEREF_RECURSION_LIMIT: usize = 10;
 
diff --git a/crates/ra_hir/src/ty/infer.rs b/crates/ra_hir/src/ty/infer.rs
index 2c05ca734..a2dc92370 100644
--- a/crates/ra_hir/src/ty/infer.rs
+++ b/crates/ra_hir/src/ty/infer.rs
@@ -15,38 +15,37 @@
 
 use std::borrow::Cow;
 use std::iter::repeat;
+use std::mem;
 use std::ops::Index;
 use std::sync::Arc;
-use std::mem;
 
-use ena::unify::{InPlaceUnificationTable, UnifyKey, UnifyValue, NoError};
+use ena::unify::{InPlaceUnificationTable, NoError, UnifyKey, UnifyValue};
 use rustc_hash::FxHashMap;
 
 use ra_arena::map::ArenaMap;
 use ra_prof::profile;
 use test_utils::tested_by;
 
+use super::{
+    autoderef, method_resolution, op, primitive,
+    traits::{Guidance, Obligation, Solution},
+    ApplicationTy, CallableDef, Substs, TraitRef, Ty, TypableDef, TypeCtor,
+};
 use crate::{
-    Function, StructField, Path, Name, FnData, AdtDef, ConstData, HirDatabase,
-    DefWithBody, ImplItem,
-    type_ref::{TypeRef, Mutability},
+    adt::VariantDef,
+    diagnostics::DiagnosticSink,
     expr::{
-        Body, Expr, BindingAnnotation, Literal, ExprId, Pat, PatId, UnaryOp, BinaryOp, Statement,
-        FieldPat, Array, self,
+        self, Array, BinaryOp, BindingAnnotation, Body, Expr, ExprId, FieldPat, Literal, Pat,
+        PatId, Statement, UnaryOp,
     },
     generics::{GenericParams, HasGenericParams},
-    path::{GenericArgs, GenericArg},
-    ModuleDef,
-    adt::VariantDef,
-    resolve::{Resolver, Resolution},
     nameres::Namespace,
+    path::{GenericArg, GenericArgs},
+    resolve::{Resolution, Resolver},
     ty::infer::diagnostics::InferenceDiagnostic,
-    diagnostics::DiagnosticSink,
-};
-use super::{
-    Ty, TypableDef, Substs, primitive, op, ApplicationTy, TypeCtor, CallableDef, TraitRef,
-    traits::{Solution, Obligation, Guidance},
-    method_resolution, autoderef,
+    type_ref::{Mutability, TypeRef},
+    AdtDef, ConstData, DefWithBody, FnData, Function, HirDatabase, ImplItem, ModuleDef, Name, Path,
+    StructField,
 };
 
 mod unify;
@@ -1415,10 +1414,10 @@ impl Expectation {
 
 mod diagnostics {
     use crate::{
-        expr::ExprId,
         diagnostics::{DiagnosticSink, NoSuchField},
-        HirDatabase, Function, HasSource,
-};
+        expr::ExprId,
+        Function, HasSource, HirDatabase,
+    };
 
     #[derive(Debug, PartialEq, Eq, Clone)]
     pub(super) enum InferenceDiagnostic {
diff --git a/crates/ra_hir/src/ty/infer/unify.rs b/crates/ra_hir/src/ty/infer/unify.rs
index bc9719725..04633bdb2 100644
--- a/crates/ra_hir/src/ty/infer/unify.rs
+++ b/crates/ra_hir/src/ty/infer/unify.rs
@@ -1,8 +1,8 @@
 //! Unification and canonicalization logic.
 
-use crate::db::HirDatabase;
-use crate::ty::{Ty, Canonical, TraitRef, InferTy};
 use super::InferenceContext;
+use crate::db::HirDatabase;
+use crate::ty::{Canonical, InferTy, TraitRef, Ty};
 
 impl<'a, D: HirDatabase> InferenceContext<'a, D> {
     pub(super) fn canonicalizer<'b>(&'b mut self) -> Canonicalizer<'a, 'b, D>
diff --git a/crates/ra_hir/src/ty/lower.rs b/crates/ra_hir/src/ty/lower.rs
index cb494baf4..8b1b2a7f9 100644
--- a/crates/ra_hir/src/ty/lower.rs
+++ b/crates/ra_hir/src/ty/lower.rs
@@ -5,23 +5,22 @@
 //!  - Building the type for an item: This happens through the `type_for_def` query.
 //!
 //! This usually involves resolving names, collecting generic arguments etc.
-use std::sync::Arc;
 use std::iter;
+use std::sync::Arc;
 
+use super::{FnSig, GenericPredicate, Substs, TraitRef, Ty, TypeCtor};
 use crate::{
-    Function, Struct, Union, StructField, Enum, EnumVariant, Path, ModuleDef, TypeAlias, Const, Static,
-    HirDatabase, BuiltinType,
-    type_ref::TypeRef,
-    nameres::Namespace,
-    resolve::{Resolver, Resolution},
-    path::{PathSegment, GenericArg},
-    generics::{HasGenericParams},
     adt::VariantDef,
-    Trait,
-    generics::{WherePredicate, GenericDef},
+    generics::HasGenericParams,
+    generics::{GenericDef, WherePredicate},
+    nameres::Namespace,
+    path::{GenericArg, PathSegment},
+    resolve::{Resolution, Resolver},
     ty::AdtDef,
+    type_ref::TypeRef,
+    BuiltinType, Const, Enum, EnumVariant, Function, HirDatabase, ModuleDef, Path, Static, Struct,
+    StructField, Trait, TypeAlias, Union,
 };
-use super::{Ty, FnSig, Substs, TypeCtor, TraitRef, GenericPredicate};
 
 impl Ty {
     pub(crate) fn from_hir(db: &impl HirDatabase, resolver: &Resolver, type_ref: &TypeRef) -> Self {
diff --git a/crates/ra_hir/src/ty/method_resolution.rs b/crates/ra_hir/src/ty/method_resolution.rs
index e023ff25a..bc890fe79 100644
--- a/crates/ra_hir/src/ty/method_resolution.rs
+++ b/crates/ra_hir/src/ty/method_resolution.rs
@@ -7,17 +7,17 @@ use std::sync::Arc;
 use arrayvec::ArrayVec;
 use rustc_hash::FxHashMap;
 
+use super::{autoderef, Canonical, TraitRef};
 use crate::{
-    HirDatabase, Module, Crate, Name, Function, Trait,
-    impl_block::{ImplId, ImplBlock, ImplItem},
-    ty::{Ty, TypeCtor},
+    generics::HasGenericParams,
+    impl_block::{ImplBlock, ImplId, ImplItem},
     nameres::CrateModuleId,
     resolve::Resolver,
     traits::TraitItem,
-    generics::HasGenericParams,
-    ty::primitive::{UncertainIntTy, UncertainFloatTy}
+    ty::primitive::{UncertainFloatTy, UncertainIntTy},
+    ty::{Ty, TypeCtor},
+    Crate, Function, HirDatabase, Module, Name, Trait,
 };
-use super::{TraitRef, Canonical, autoderef};
 
 /// This is used as a key for indexing impls.
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
diff --git a/crates/ra_hir/src/ty/op.rs b/crates/ra_hir/src/ty/op.rs
index 235661a5d..9ba868298 100644
--- a/crates/ra_hir/src/ty/op.rs
+++ b/crates/ra_hir/src/ty/op.rs
@@ -1,5 +1,5 @@
-use crate::{ ty::ApplicationTy, expr::BinaryOp};
-use super::{Ty, TypeCtor, InferTy};
+use super::{InferTy, Ty, TypeCtor};
+use crate::{expr::BinaryOp, ty::ApplicationTy};
 
 pub(super) fn binary_op_return_ty(op: BinaryOp, rhs_ty: Ty) -> Ty {
     match op {
diff --git a/crates/ra_hir/src/ty/tests.rs b/crates/ra_hir/src/ty/tests.rs
index 0fe7805e2..20fa74fb4 100644
--- a/crates/ra_hir/src/ty/tests.rs
+++ b/crates/ra_hir/src/ty/tests.rs
@@ -1,17 +1,18 @@
-use std::sync::Arc;
 use std::fmt::Write;
+use std::sync::Arc;
 
 use insta::assert_snapshot_matches;
 
-use ra_db::{SourceDatabase, salsa::Database, FilePosition};
-use ra_syntax::{algo, ast::{self, AstNode}, SyntaxKind::*};
+use ra_db::{salsa::Database, FilePosition, SourceDatabase};
+use ra_syntax::{
+    algo,
+    ast::{self, AstNode},
+    SyntaxKind::*,
+};
 use test_utils::covers;
 
 use crate::{
-    mock::MockDatabase,
-    ty::display::HirDisplay,
-    ty::InferenceResult,
-    expr::BodySourceMap,
+    expr::BodySourceMap, mock::MockDatabase, ty::display::HirDisplay, ty::InferenceResult,
     SourceAnalyzer,
 };
 
diff --git a/crates/ra_hir/src/ty/traits.rs b/crates/ra_hir/src/ty/traits.rs
index 69c03a36c..3c902451b 100644
--- a/crates/ra_hir/src/ty/traits.rs
+++ b/crates/ra_hir/src/ty/traits.rs
@@ -1,16 +1,16 @@
 //! Trait solving using Chalk.
 use std::sync::Arc;
 
-use parking_lot::Mutex;
-use rustc_hash::FxHashSet;
-use log::debug;
 use chalk_ir::cast::Cast;
+use log::debug;
+use parking_lot::Mutex;
 use ra_prof::profile;
+use rustc_hash::FxHashSet;
 
-use crate::{Crate, Trait, db::HirDatabase, ImplBlock};
-use super::{TraitRef, Ty, Canonical, ProjectionTy};
+use super::{Canonical, ProjectionTy, TraitRef, Ty};
+use crate::{db::HirDatabase, Crate, ImplBlock, Trait};
 
-use self::chalk::{ToChalk, from_chalk};
+use self::chalk::{from_chalk, ToChalk};
 
 pub(crate) mod chalk;
 
diff --git a/crates/ra_hir/src/ty/traits/chalk.rs b/crates/ra_hir/src/ty/traits/chalk.rs
index 4ceb8b70b..2a0537bc3 100644
--- a/crates/ra_hir/src/ty/traits/chalk.rs
+++ b/crates/ra_hir/src/ty/traits/chalk.rs
@@ -3,20 +3,25 @@ use std::sync::Arc;
 
 use log::debug;
 
-use chalk_ir::{TypeId, ImplId, TypeKindId, Parameter, Identifier, cast::Cast, PlaceholderIndex, UniverseIndex, TypeName};
-use chalk_rust_ir::{AssociatedTyDatum, TraitDatum, StructDatum, ImplDatum};
+use chalk_ir::{
+    cast::Cast, Identifier, ImplId, Parameter, PlaceholderIndex, TypeId, TypeKindId, TypeName,
+    UniverseIndex,
+};
+use chalk_rust_ir::{AssociatedTyDatum, ImplDatum, StructDatum, TraitDatum};
 
-use test_utils::tested_by;
 use ra_db::salsa::{InternId, InternKey};
+use test_utils::tested_by;
 
+use super::ChalkContext;
 use crate::{
-    Trait, HasGenericParams, ImplBlock, Crate,
     db::HirDatabase,
-    ty::{TraitRef, Ty, ApplicationTy, TypeCtor, Substs, GenericPredicate, CallableDef, ProjectionTy},
+    generics::GenericDef,
     ty::display::HirDisplay,
-    generics::GenericDef, TypeAlias, ImplItem,
+    ty::{
+        ApplicationTy, CallableDef, GenericPredicate, ProjectionTy, Substs, TraitRef, Ty, TypeCtor,
+    },
+    Crate, HasGenericParams, ImplBlock, ImplItem, Trait, TypeAlias,
 };
-use super::ChalkContext;
 
 /// This represents a trait whose name we could not resolve.
 const UNKNOWN_TRAIT: chalk_ir::TraitId =
diff --git a/crates/ra_hir/src/type_alias.rs b/crates/ra_hir/src/type_alias.rs
index eada37274..3b38c4740 100644
--- a/crates/ra_hir/src/type_alias.rs
+++ b/crates/ra_hir/src/type_alias.rs
@@ -4,7 +4,12 @@ use std::sync::Arc;
 
 use ra_syntax::ast::NameOwner;
 
-use crate::{TypeAlias, db::{DefDatabase, AstDatabase}, type_ref::TypeRef, name::{Name, AsName}, HasSource};
+use crate::{
+    db::{AstDatabase, DefDatabase},
+    name::{AsName, Name},
+    type_ref::TypeRef,
+    HasSource, TypeAlias,
+};
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct TypeAliasData {