move more stuff to ids

6 files changed, 183 insertions, 185 deletions

diff --git a/crates/ra_hir/src/adt.rs b/crates/ra_hir/src/adt.rs
index e839a5a90..c6463235c 100644
--- a/crates/ra_hir/src/adt.rs
+++ b/crates/ra_hir/src/adt.rs
@@ -1,9 +1,10 @@
 use std::sync::Arc;
 
+use ra_db::Cancelable;
 use ra_syntax::ast::{self, NameOwner, StructFlavor};
 
 use crate::{
-    DefId, Cancelable, Name, AsName,
+    DefId, Name, AsName,
     db::HirDatabase,
     type_ref::TypeRef,
 };
diff --git a/crates/ra_hir/src/ids.rs b/crates/ra_hir/src/ids.rs
index 3eba35a24..cd32033f3 100644
--- a/crates/ra_hir/src/ids.rs
+++ b/crates/ra_hir/src/ids.rs
@@ -1,6 +1,10 @@
-use crate::{FileId, MacroCallId, HirDatabase};
+use ra_db::{SourceRootId, LocationIntener, Cancelable, FileId};
+use ra_syntax::{SourceFileNode, SyntaxKind, SyntaxNode, SyntaxNodeRef, SourceFile, AstNode, ast};
 
-use ra_syntax::SourceFileNode;
+use crate::{
+    MacroCallId, HirDatabase, PerNs, ModuleId, Module, Def, Function, Struct, Enum,
+    arena::{Arena, Id},
+};
 
 /// hir makes a 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
@@ -72,3 +76,170 @@ impl From<MacroCallId> for HirFileId {
         HirFileId(HirFileIdRepr::Macro(macro_call_id))
     }
 }
+
+/// Def's are a core concept of hir. A `Def` is an Item (function, module, etc)
+/// in a specific module.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub struct DefId(u32);
+ra_db::impl_numeric_id!(DefId);
+
+#[derive(Clone, Debug, PartialEq, Eq, Hash)]
+pub struct DefLoc {
+    pub(crate) kind: DefKind,
+    pub(crate) source_root_id: SourceRootId,
+    pub(crate) module_id: ModuleId,
+    pub(crate) source_item_id: SourceItemId,
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
+pub(crate) enum DefKind {
+    Module,
+    Function,
+    Struct,
+    Enum,
+    Item,
+
+    StructCtor,
+}
+
+impl DefId {
+    pub(crate) fn loc(self, db: &impl AsRef<LocationIntener<DefLoc, DefId>>) -> DefLoc {
+        db.as_ref().id2loc(self)
+    }
+
+    pub fn resolve(self, db: &impl HirDatabase) -> Cancelable<Def> {
+        let loc = self.loc(db);
+        let res = match loc.kind {
+            DefKind::Module => {
+                let module = Module::new(db, loc.source_root_id, loc.module_id)?;
+                Def::Module(module)
+            }
+            DefKind::Function => {
+                let function = Function::new(self);
+                Def::Function(function)
+            }
+            DefKind::Struct => {
+                let struct_def = Struct::new(self);
+                Def::Struct(struct_def)
+            }
+            DefKind::Enum => {
+                let enum_def = Enum::new(self);
+                Def::Enum(enum_def)
+            }
+            DefKind::StructCtor => Def::Item,
+            DefKind::Item => Def::Item,
+        };
+        Ok(res)
+    }
+
+    /// For a module, returns that module; for any other def, returns the containing module.
+    pub fn module(self, db: &impl HirDatabase) -> Cancelable<Module> {
+        let loc = self.loc(db);
+        Module::new(db, loc.source_root_id, loc.module_id)
+    }
+}
+
+impl DefLoc {
+    pub(crate) fn id(&self, db: &impl AsRef<LocationIntener<DefLoc, DefId>>) -> DefId {
+        db.as_ref().loc2id(&self)
+    }
+}
+
+impl DefKind {
+    pub(crate) fn for_syntax_kind(kind: SyntaxKind) -> PerNs<DefKind> {
+        match kind {
+            SyntaxKind::FN_DEF => PerNs::values(DefKind::Function),
+            SyntaxKind::MODULE => PerNs::types(DefKind::Module),
+            SyntaxKind::STRUCT_DEF => PerNs::both(DefKind::Struct, DefKind::StructCtor),
+            SyntaxKind::ENUM_DEF => PerNs::types(DefKind::Enum),
+            // These define items, but don't have their own DefKinds yet:
+            SyntaxKind::TRAIT_DEF => PerNs::types(DefKind::Item),
+            SyntaxKind::TYPE_DEF => PerNs::types(DefKind::Item),
+            SyntaxKind::CONST_DEF => PerNs::values(DefKind::Item),
+            SyntaxKind::STATIC_DEF => PerNs::values(DefKind::Item),
+            _ => PerNs::none(),
+        }
+    }
+}
+
+/// Identifier of item within a specific file. This is stable over reparses, so
+/// it's OK to use it as a salsa key/value.
+pub(crate) type SourceFileItemId = Id<SyntaxNode>;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub struct SourceItemId {
+    pub(crate) file_id: HirFileId,
+    /// None for the whole file.
+    pub(crate) item_id: Option<SourceFileItemId>,
+}
+
+/// Maps item's `SyntaxNode`s to `SourceFileItemId` and back.
+#[derive(Debug, PartialEq, Eq)]
+pub struct SourceFileItems {
+    file_id: HirFileId,
+    arena: Arena<SyntaxNode>,
+}
+
+impl SourceFileItems {
+    pub(crate) fn new(file_id: HirFileId, source_file: SourceFile) -> SourceFileItems {
+        let mut res = SourceFileItems {
+            file_id,
+            arena: Arena::default(),
+        };
+        res.init(source_file);
+        res
+    }
+
+    fn init(&mut self, source_file: SourceFile) {
+        source_file.syntax().descendants().for_each(|it| {
+            if let Some(module_item) = ast::ModuleItem::cast(it) {
+                self.alloc(module_item.syntax().owned());
+            } else if let Some(macro_call) = ast::MacroCall::cast(it) {
+                self.alloc(macro_call.syntax().owned());
+            }
+        });
+    }
+
+    fn alloc(&mut self, item: SyntaxNode) -> SourceFileItemId {
+        self.arena.alloc(item)
+    }
+    pub(crate) fn id_of(&self, file_id: HirFileId, item: SyntaxNodeRef) -> SourceFileItemId {
+        assert_eq!(
+            self.file_id, file_id,
+            "SourceFileItems: wrong file, expected {:?}, got {:?}",
+            self.file_id, file_id
+        );
+        self.id_of_unchecked(item)
+    }
+    pub(crate) fn id_of_unchecked(&self, item: SyntaxNodeRef) -> SourceFileItemId {
+        if let Some((id, _)) = self.arena.iter().find(|(_id, i)| i.borrowed() == item) {
+            return id;
+        }
+        // This should not happen. Let's try to give a sensible diagnostics.
+        if let Some((id, i)) = self.arena.iter().find(|(_id, i)| i.range() == item.range()) {
+            // FIXME(#288): whyyy are we getting here?
+            log::error!(
+                "unequal syntax nodes with the same range:\n{:?}\n{:?}",
+                item,
+                i
+            );
+            return id;
+        }
+        panic!(
+            "Can't find {:?} in SourceFileItems:\n{:?}",
+            item,
+            self.arena.iter().map(|(_id, i)| i).collect::<Vec<_>>(),
+        );
+    }
+    pub fn id_of_source_file(&self) -> SourceFileItemId {
+        let (id, _syntax) = self.arena.iter().next().unwrap();
+        id
+    }
+}
+
+impl std::ops::Index<SourceFileItemId> for SourceFileItems {
+    type Output = SyntaxNode;
+    fn index(&self, idx: SourceFileItemId) -> &SyntaxNode {
+        &self.arena[idx]
+    }
+}
diff --git a/crates/ra_hir/src/krate.rs b/crates/ra_hir/src/krate.rs
index 4d4f59949..a0821d15d 100644
--- a/crates/ra_hir/src/krate.rs
+++ b/crates/ra_hir/src/krate.rs
@@ -1,6 +1,6 @@
-pub use ra_db::CrateId;
+pub use ra_db::{CrateId, Cancelable};
 
-use crate::{HirDatabase, Module, Cancelable, Name, AsName, HirFileId};
+use crate::{HirDatabase, Module, Name, AsName, HirFileId};
 
 /// hir::Crate describes a single crate. It's the main inteface with which
 /// crate's dependencies interact. Mostly, it should be just a proxy for the
diff --git a/crates/ra_hir/src/lib.rs b/crates/ra_hir/src/lib.rs
index c1386601d..5e939b79e 100644
--- a/crates/ra_hir/src/lib.rs
+++ b/crates/ra_hir/src/lib.rs
@@ -32,22 +32,17 @@ mod adt;
 mod type_ref;
 mod ty;
 
-use std::ops::Index;
-
-use ra_syntax::{SyntaxNodeRef, SyntaxNode, SyntaxKind, SourceFile, AstNode, ast};
-use ra_db::{LocationIntener, SourceRootId, FileId, Cancelable};
-
 use crate::{
     db::HirDatabase,
-    arena::{Arena, Id},
     name::{AsName, KnownName},
+    ids::{DefKind, SourceItemId, SourceFileItemId, SourceFileItems},
 };
 
 pub use self::{
     path::{Path, PathKind},
     name::Name,
     krate::Crate,
-    ids::HirFileId,
+    ids::{HirFileId, DefId, DefLoc},
     macros::{MacroDef, MacroInput, MacroExpansion, MacroCallId, MacroCallLoc},
     module::{Module, ModuleId, Problem, nameres::{ItemMap, PerNs, Namespace}, ModuleScope, Resolution},
     function::{Function, FnScopes},
@@ -57,60 +52,6 @@ pub use self::{
 
 pub use self::function::FnSignatureInfo;
 
-/// Def's are a core concept of hir. A `Def` is an Item (function, module, etc)
-/// in a specific module.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub struct DefId(u32);
-ra_db::impl_numeric_id!(DefId);
-
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
-pub(crate) enum DefKind {
-    Module,
-    Function,
-    Struct,
-    Enum,
-    Item,
-
-    StructCtor,
-}
-
-#[derive(Clone, Debug, PartialEq, Eq, Hash)]
-pub struct DefLoc {
-    pub(crate) kind: DefKind,
-    source_root_id: SourceRootId,
-    module_id: ModuleId,
-    source_item_id: SourceItemId,
-}
-
-impl DefKind {
-    pub(crate) fn for_syntax_kind(kind: SyntaxKind) -> PerNs<DefKind> {
-        match kind {
-            SyntaxKind::FN_DEF => PerNs::values(DefKind::Function),
-            SyntaxKind::MODULE => PerNs::types(DefKind::Module),
-            SyntaxKind::STRUCT_DEF => PerNs::both(DefKind::Struct, DefKind::StructCtor),
-            SyntaxKind::ENUM_DEF => PerNs::types(DefKind::Enum),
-            // These define items, but don't have their own DefKinds yet:
-            SyntaxKind::TRAIT_DEF => PerNs::types(DefKind::Item),
-            SyntaxKind::TYPE_DEF => PerNs::types(DefKind::Item),
-            SyntaxKind::CONST_DEF => PerNs::values(DefKind::Item),
-            SyntaxKind::STATIC_DEF => PerNs::values(DefKind::Item),
-            _ => PerNs::none(),
-        }
-    }
-}
-
-impl DefId {
-    pub(crate) fn loc(self, db: &impl AsRef<LocationIntener<DefLoc, DefId>>) -> DefLoc {
-        db.as_ref().id2loc(self)
-    }
-}
-
-impl DefLoc {
-    pub(crate) fn id(&self, db: &impl AsRef<LocationIntener<DefLoc, DefId>>) -> DefId {
-        db.as_ref().loc2id(&self)
-    }
-}
-
 pub enum Def {
     Module(Module),
     Function(Function),
@@ -118,118 +59,3 @@ pub enum Def {
     Enum(Enum),
     Item,
 }
-
-impl DefId {
-    pub fn resolve(self, db: &impl HirDatabase) -> Cancelable<Def> {
-        let loc = self.loc(db);
-        let res = match loc.kind {
-            DefKind::Module => {
-                let module = Module::new(db, loc.source_root_id, loc.module_id)?;
-                Def::Module(module)
-            }
-            DefKind::Function => {
-                let function = Function::new(self);
-                Def::Function(function)
-            }
-            DefKind::Struct => {
-                let struct_def = Struct::new(self);
-                Def::Struct(struct_def)
-            }
-            DefKind::Enum => {
-                let enum_def = Enum::new(self);
-                Def::Enum(enum_def)
-            }
-            DefKind::StructCtor => Def::Item,
-            DefKind::Item => Def::Item,
-        };
-        Ok(res)
-    }
-
-    /// For a module, returns that module; for any other def, returns the containing module.
-    pub fn module(self, db: &impl HirDatabase) -> Cancelable<Module> {
-        let loc = self.loc(db);
-        Module::new(db, loc.source_root_id, loc.module_id)
-    }
-}
-
-/// Identifier of item within a specific file. This is stable over reparses, so
-/// it's OK to use it as a salsa key/value.
-pub(crate) type SourceFileItemId = Id<SyntaxNode>;
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub struct SourceItemId {
-    file_id: HirFileId,
-    /// None for the whole file.
-    item_id: Option<SourceFileItemId>,
-}
-
-/// Maps item's `SyntaxNode`s to `SourceFileItemId` and back.
-#[derive(Debug, PartialEq, Eq)]
-pub struct SourceFileItems {
-    file_id: HirFileId,
-    arena: Arena<SyntaxNode>,
-}
-
-impl SourceFileItems {
-    fn new(file_id: HirFileId, source_file: SourceFile) -> SourceFileItems {
-        let mut res = SourceFileItems {
-            file_id,
-            arena: Arena::default(),
-        };
-        res.init(source_file);
-        res
-    }
-
-    fn init(&mut self, source_file: SourceFile) {
-        source_file.syntax().descendants().for_each(|it| {
-            if let Some(module_item) = ast::ModuleItem::cast(it) {
-                self.alloc(module_item.syntax().owned());
-            } else if let Some(macro_call) = ast::MacroCall::cast(it) {
-                self.alloc(macro_call.syntax().owned());
-            }
-        });
-    }
-
-    fn alloc(&mut self, item: SyntaxNode) -> SourceFileItemId {
-        self.arena.alloc(item)
-    }
-    pub fn id_of(&self, file_id: HirFileId, item: SyntaxNodeRef) -> SourceFileItemId {
-        assert_eq!(
-            self.file_id, file_id,
-            "SourceFileItems: wrong file, expected {:?}, got {:?}",
-            self.file_id, file_id
-        );
-        self.id_of_unchecked(item)
-    }
-    fn id_of_unchecked(&self, item: SyntaxNodeRef) -> SourceFileItemId {
-        if let Some((id, _)) = self.arena.iter().find(|(_id, i)| i.borrowed() == item) {
-            return id;
-        }
-        // This should not happen. Let's try to give a sensible diagnostics.
-        if let Some((id, i)) = self.arena.iter().find(|(_id, i)| i.range() == item.range()) {
-            // FIXME(#288): whyyy are we getting here?
-            log::error!(
-                "unequal syntax nodes with the same range:\n{:?}\n{:?}",
-                item,
-                i
-            );
-            return id;
-        }
-        panic!(
-            "Can't find {:?} in SourceFileItems:\n{:?}",
-            item,
-            self.arena.iter().map(|(_id, i)| i).collect::<Vec<_>>(),
-        );
-    }
-    pub fn id_of_source_file(&self) -> SourceFileItemId {
-        let (id, _syntax) = self.arena.iter().next().unwrap();
-        id
-    }
-}
-
-impl Index<SourceFileItemId> for SourceFileItems {
-    type Output = SyntaxNode;
-    fn index(&self, idx: SourceFileItemId) -> &SyntaxNode {
-        &self.arena[idx]
-    }
-}
diff --git a/crates/ra_hir/src/macros.rs b/crates/ra_hir/src/macros.rs
index 1f141dbac..288fbe3c6 100644
--- a/crates/ra_hir/src/macros.rs
+++ b/crates/ra_hir/src/macros.rs
@@ -1,12 +1,12 @@
 use std::sync::Arc;
 
-use ra_db::{LocalSyntaxPtr, LocationIntener};
+use ra_db::{SourceRootId, LocalSyntaxPtr, LocationIntener};
 use ra_syntax::{
     TextRange, TextUnit, SourceFileNode, AstNode, SyntaxNode,
     ast::{self, NameOwner},
 };
 
-use crate::{SourceRootId, module::ModuleId, SourceItemId, HirDatabase};
+use crate::{module::ModuleId, SourceItemId, HirDatabase};
 
 /// Def's are a core concept of hir. A `Def` is an Item (function, module, etc)
 /// in a specific module.
diff --git a/crates/ra_hir/src/module/nameres.rs b/crates/ra_hir/src/module/nameres.rs
index cc60ba077..40aa33ffa 100644
--- a/crates/ra_hir/src/module/nameres.rs
+++ b/crates/ra_hir/src/module/nameres.rs
@@ -22,10 +22,10 @@ use ra_syntax::{
     SyntaxKind::{self, *},
     ast::{self, AstNode}
 };
-use ra_db::SourceRootId;
+use ra_db::{SourceRootId, Cancelable, FileId};
 
 use crate::{
-    Cancelable, HirFileId, FileId,
+    HirFileId,
     DefId, DefLoc, DefKind,
     SourceItemId, SourceFileItemId, SourceFileItems,
     Path, PathKind,