Move hir to a separate crate

9 files changed, 69 insertions, 181 deletions

diff --git a/crates/ra_hir/src/arena.rs b/crates/ra_hir/src/arena.rs
index a752ec0c1..8d67ab1c9 100644
--- a/crates/ra_hir/src/arena.rs
+++ b/crates/ra_hir/src/arena.rs
@@ -8,7 +8,7 @@ use std::{
     marker::PhantomData,
 };
 
-pub(crate) struct Id<T> {
+pub struct Id<T> {
     idx: u32,
     _ty: PhantomData<fn() -> T>,
 }
diff --git a/crates/ra_hir/src/db.rs b/crates/ra_hir/src/db.rs
index dbf8785fe..2f01bae6d 100644
--- a/crates/ra_hir/src/db.rs
+++ b/crates/ra_hir/src/db.rs
@@ -10,14 +10,14 @@ use crate::{
     DefLoc, DefId, FnId,
     SourceFileItems, SourceItemId,
     query_definitions,
-    function::{FnScopes},
+    FnScopes,
     module::{ModuleId, ModuleTree, ModuleSource,
     nameres::{ItemMap, InputModuleItems}},
 };
 
 salsa::query_group! {
 
-pub(crate) trait HirDatabase: SyntaxDatabase
+pub trait HirDatabase: SyntaxDatabase
     + AsRef<LocationIntener<DefLoc, DefId>>
     + AsRef<LocationIntener<SourceItemId, FnId>>
 {
diff --git a/crates/ra_hir/src/function/mod.rs b/crates/ra_hir/src/function/mod.rs
index a3ed00f02..c8af2e54f 100644
--- a/crates/ra_hir/src/function/mod.rs
+++ b/crates/ra_hir/src/function/mod.rs
@@ -15,10 +15,10 @@ use crate::{
     FnId, HirDatabase, SourceItemId,
 };
 
-pub(crate) use self::scope::FnScopes;
+pub use self::scope::FnScopes;
 
 impl FnId {
-    pub(crate) fn get(db: &impl HirDatabase, file_id: FileId, fn_def: ast::FnDef) -> FnId {
+    pub fn get(db: &impl HirDatabase, file_id: FileId, fn_def: ast::FnDef) -> FnId {
         let file_items = db.file_items(file_id);
         let item_id = file_items.id_of(fn_def.syntax());
         let item_id = SourceItemId { file_id, item_id };
@@ -26,12 +26,12 @@ impl FnId {
     }
 }
 
-pub(crate) struct Function {
+pub struct Function {
     fn_id: FnId,
 }
 
 impl Function {
-    pub(crate) fn guess_from_source(
+    pub fn guess_from_source(
         db: &impl HirDatabase,
         file_id: FileId,
         fn_def: ast::FnDef,
@@ -40,7 +40,7 @@ impl Function {
         Function { fn_id }
     }
 
-    pub(crate) fn guess_for_name_ref(
+    pub fn guess_for_name_ref(
         db: &impl HirDatabase,
         file_id: FileId,
         name_ref: ast::NameRef,
@@ -48,7 +48,7 @@ impl Function {
         Function::guess_for_node(db, file_id, name_ref.syntax())
     }
 
-    pub(crate) fn guess_for_bind_pat(
+    pub fn guess_for_bind_pat(
         db: &impl HirDatabase,
         file_id: FileId,
         bind_pat: ast::BindPat,
@@ -66,11 +66,11 @@ impl Function {
         Some(res)
     }
 
-    pub(crate) fn scope(&self, db: &impl HirDatabase) -> Arc<FnScopes> {
+    pub fn scope(&self, db: &impl HirDatabase) -> Arc<FnScopes> {
         db.fn_scopes(self.fn_id)
     }
 
-    pub(crate) fn signature_info(&self, db: &impl HirDatabase) -> Option<FnSignatureInfo> {
+    pub fn signature_info(&self, db: &impl HirDatabase) -> Option<FnSignatureInfo> {
         let syntax = db.fn_syntax(self.fn_id);
         FnSignatureInfo::new(syntax.borrowed())
     }
diff --git a/crates/ra_hir/src/function/scope.rs b/crates/ra_hir/src/function/scope.rs
index c8b6b1934..863453291 100644
--- a/crates/ra_hir/src/function/scope.rs
+++ b/crates/ra_hir/src/function/scope.rs
@@ -15,7 +15,7 @@ pub(crate) type ScopeId = Id<ScopeData>;
 
 #[derive(Debug, PartialEq, Eq)]
 pub struct FnScopes {
-    pub(crate) self_param: Option<LocalSyntaxPtr>,
+    pub self_param: Option<LocalSyntaxPtr>,
     scopes: Arena<ScopeData>,
     scope_for: FxHashMap<LocalSyntaxPtr, ScopeId>,
 }
@@ -27,13 +27,13 @@ pub struct ScopeEntry {
 }
 
 #[derive(Debug, PartialEq, Eq)]
-pub(crate) struct ScopeData {
+pub struct ScopeData {
     parent: Option<ScopeId>,
     entries: Vec<ScopeEntry>,
 }
 
 impl FnScopes {
-    pub(crate) fn new(fn_def: ast::FnDef) -> FnScopes {
+    pub fn new(fn_def: ast::FnDef) -> FnScopes {
         let mut scopes = FnScopes {
             self_param: fn_def
                 .param_list()
@@ -49,7 +49,7 @@ impl FnScopes {
         }
         scopes
     }
-    pub(crate) fn entries(&self, scope: ScopeId) -> &[ScopeEntry] {
+    pub fn entries(&self, scope: ScopeId) -> &[ScopeEntry] {
         &self.scopes[scope].entries
     }
     pub fn scope_chain<'a>(&'a self, node: SyntaxNodeRef) -> impl Iterator<Item = ScopeId> + 'a {
@@ -57,10 +57,7 @@ impl FnScopes {
             self.scopes[scope].parent
         })
     }
-    pub(crate) fn resolve_local_name<'a>(
-        &'a self,
-        name_ref: ast::NameRef,
-    ) -> Option<&'a ScopeEntry> {
+    pub fn resolve_local_name<'a>(&'a self, name_ref: ast::NameRef) -> Option<&'a ScopeEntry> {
         let mut shadowed = FxHashSet::default();
         let ret = self
             .scope_chain(name_ref.syntax())
@@ -138,10 +135,10 @@ impl ScopeEntry {
         };
         Some(res)
     }
-    pub(crate) fn name(&self) -> &SmolStr {
+    pub fn name(&self) -> &SmolStr {
         &self.name
     }
-    pub(crate) fn ptr(&self) -> LocalSyntaxPtr {
+    pub fn ptr(&self) -> LocalSyntaxPtr {
         self.ptr
     }
 }
diff --git a/crates/ra_hir/src/lib.rs b/crates/ra_hir/src/lib.rs
index 7bf06c7f7..f13f0107e 100644
--- a/crates/ra_hir/src/lib.rs
+++ b/crates/ra_hir/src/lib.rs
@@ -14,7 +14,7 @@ macro_rules! ctry {
     };
 }
 
-pub(crate) mod db;
+pub mod db;
 mod query_definitions;
 mod function;
 mod module;
@@ -31,36 +31,36 @@ use crate::{
     arena::{Arena, Id},
 };
 
-pub(crate) use self::{
+pub use self::{
     path::{Path, PathKind},
-    module::{Module, ModuleId, Problem},
+    module::{Module, ModuleId, Problem, nameres::ItemMap},
     function::{Function, FnScopes},
 };
 
 pub use self::function::FnSignatureInfo;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub(crate) struct FnId(u32);
+pub struct FnId(u32);
 ra_db::impl_numeric_id!(FnId);
 
 impl FnId {
-    pub(crate) fn from_loc(
+    pub fn from_loc(
         db: &impl AsRef<LocationIntener<SourceItemId, FnId>>,
         loc: &SourceItemId,
     ) -> FnId {
         db.as_ref().loc2id(loc)
     }
-    pub(crate) fn loc(self, db: &impl AsRef<LocationIntener<SourceItemId, FnId>>) -> SourceItemId {
+    pub fn loc(self, db: &impl AsRef<LocationIntener<SourceItemId, FnId>>) -> SourceItemId {
         db.as_ref().id2loc(self)
     }
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub(crate) struct DefId(u32);
+pub struct DefId(u32);
 ra_db::impl_numeric_id!(DefId);
 
 #[derive(Clone, Debug, PartialEq, Eq, Hash)]
-pub(crate) enum DefLoc {
+pub enum DefLoc {
     Module {
         id: ModuleId,
         source_root: SourceRootId,
@@ -71,24 +71,24 @@ pub(crate) enum DefLoc {
 }
 
 impl DefId {
-    pub(crate) fn loc(self, db: &impl AsRef<LocationIntener<DefLoc, DefId>>) -> DefLoc {
+    pub 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 {
+    pub fn id(&self, db: &impl AsRef<LocationIntener<DefLoc, DefId>>) -> DefId {
         db.as_ref().loc2id(&self)
     }
 }
 
-pub(crate) enum Def {
+pub enum Def {
     Module(Module),
     Item,
 }
 
 impl DefId {
-    pub(crate) fn resolve(self, db: &impl HirDatabase) -> Cancelable<Def> {
+    pub fn resolve(self, db: &impl HirDatabase) -> Cancelable<Def> {
         let loc = self.loc(db);
         let res = match loc {
             DefLoc::Module { id, source_root } => {
@@ -106,14 +106,14 @@ impl DefId {
 pub(crate) type SourceFileItemId = Id<SyntaxNode>;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub(crate) struct SourceItemId {
+pub struct SourceItemId {
     file_id: FileId,
     item_id: SourceFileItemId,
 }
 
 /// Maps item's `SyntaxNode`s to `SourceFileItemId` and back.
 #[derive(Debug, PartialEq, Eq, Default)]
-pub(crate) struct SourceFileItems {
+pub struct SourceFileItems {
     arena: Arena<SyntaxNode>,
 }
 
@@ -121,7 +121,7 @@ impl SourceFileItems {
     fn alloc(&mut self, item: SyntaxNode) -> SourceFileItemId {
         self.arena.alloc(item)
     }
-    fn id_of(&self, item: SyntaxNodeRef) -> SourceFileItemId {
+    pub fn id_of(&self, item: SyntaxNodeRef) -> SourceFileItemId {
         let (id, _item) = self
             .arena
             .iter()
diff --git a/crates/ra_hir/src/module/imp.rs b/crates/ra_hir/src/module/imp.rs
index d55fa3e6b..76ea129a7 100644
--- a/crates/ra_hir/src/module/imp.rs
+++ b/crates/ra_hir/src/module/imp.rs
@@ -18,7 +18,7 @@ use super::{
 };
 
 #[derive(Clone, Hash, PartialEq, Eq, Debug)]
-pub(crate) enum Submodule {
+pub enum Submodule {
     Declaration(SmolStr),
     Definition(SmolStr, ModuleSource),
 }
diff --git a/crates/ra_hir/src/module/mod.rs b/crates/ra_hir/src/module/mod.rs
index 81b9f948d..a011fd53e 100644
--- a/crates/ra_hir/src/module/mod.rs
+++ b/crates/ra_hir/src/module/mod.rs
@@ -18,15 +18,16 @@ use crate::{
     arena::{Arena, Id},
 };
 
-pub(crate) use self::nameres::ModuleScope;
+pub use self::nameres::ModuleScope;
 
 /// `Module` is API entry point to get all the information
 /// about a particular module.
 #[derive(Debug, Clone)]
-pub(crate) struct Module {
+pub struct Module {
     tree: Arc<ModuleTree>,
     source_root_id: SourceRootId,
-    module_id: ModuleId,
+    //TODO: make private
+    pub module_id: ModuleId,
 }
 
 impl Module {
@@ -145,17 +146,13 @@ impl Module {
     }
 
     /// Returns a `ModuleScope`: a set of items, visible in this module.
-    pub(crate) fn scope(&self, db: &impl HirDatabase) -> Cancelable<ModuleScope> {
+    pub fn scope(&self, db: &impl HirDatabase) -> Cancelable<ModuleScope> {
         let item_map = db.item_map(self.source_root_id)?;
         let res = item_map.per_module[&self.module_id].clone();
         Ok(res)
     }
 
-    pub(crate) fn resolve_path(
-        &self,
-        db: &impl HirDatabase,
-        path: Path,
-    ) -> Cancelable<Option<DefId>> {
+    pub fn resolve_path(&self, db: &impl HirDatabase, path: Path) -> Cancelable<Option<DefId>> {
         let mut curr = match path.kind {
             PathKind::Crate => self.crate_root(),
             PathKind::Self_ | PathKind::Plain => self.clone(),
@@ -188,7 +185,7 @@ impl Module {
 /// (which can have multiple parents) to the precise world of modules (which
 /// always have one parent).
 #[derive(Default, Debug, PartialEq, Eq)]
-pub(crate) struct ModuleTree {
+pub struct ModuleTree {
     mods: Arena<ModuleData>,
     links: Arena<LinkData>,
 }
@@ -214,19 +211,19 @@ impl ModuleTree {
 /// `ModuleSource` is the syntax tree element that produced this module:
 /// either a file, or an inlinde module.
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
-pub(crate) enum ModuleSource {
+pub enum ModuleSource {
     SourceFile(FileId),
     Module(SourceItemId),
 }
 
 /// An owned syntax node for a module. Unlike `ModuleSource`,
 /// this holds onto the AST for the whole file.
-pub(crate) enum ModuleSourceNode {
+pub enum ModuleSourceNode {
     SourceFile(ast::SourceFileNode),
     Module(ast::ModuleNode),
 }
 
-pub(crate) type ModuleId = Id<ModuleData>;
+pub type ModuleId = Id<ModuleData>;
 type LinkId = Id<LinkData>;
 
 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
@@ -308,7 +305,7 @@ impl LinkId {
 }
 
 #[derive(Debug, PartialEq, Eq, Hash)]
-pub(crate) struct ModuleData {
+pub struct ModuleData {
     source: ModuleSource,
     parent: Option<LinkId>,
     children: Vec<LinkId>,
@@ -327,21 +324,21 @@ impl ModuleSource {
         ModuleSource::Module(id)
     }
 
-    pub(crate) fn as_file(self) -> Option<FileId> {
+    pub fn as_file(self) -> Option<FileId> {
         match self {
             ModuleSource::SourceFile(f) => Some(f),
             ModuleSource::Module(..) => None,
         }
     }
 
-    pub(crate) fn file_id(self) -> FileId {
+    pub fn file_id(self) -> FileId {
         match self {
             ModuleSource::SourceFile(f) => f,
             ModuleSource::Module(source_item_id) => source_item_id.file_id,
         }
     }
 
-    pub(crate) fn resolve(self, db: &impl HirDatabase) -> ModuleSourceNode {
+    pub fn resolve(self, db: &impl HirDatabase) -> ModuleSourceNode {
         match self {
             ModuleSource::SourceFile(file_id) => {
                 let syntax = db.source_file(file_id);
diff --git a/crates/ra_hir/src/module/nameres.rs b/crates/ra_hir/src/module/nameres.rs
index 513a37646..837a8d5ae 100644
--- a/crates/ra_hir/src/module/nameres.rs
+++ b/crates/ra_hir/src/module/nameres.rs
@@ -38,20 +38,20 @@ use crate::{
 /// Item map is the result of the name resolution. Item map contains, for each
 /// module, the set of visible items.
 #[derive(Default, Debug, PartialEq, Eq)]
-pub(crate) struct ItemMap {
-    pub(crate) per_module: FxHashMap<ModuleId, ModuleScope>,
+pub struct ItemMap {
+    pub per_module: FxHashMap<ModuleId, ModuleScope>,
 }
 
 #[derive(Debug, Default, PartialEq, Eq, Clone)]
-pub(crate) struct ModuleScope {
-    items: FxHashMap<SmolStr, Resolution>,
+pub struct ModuleScope {
+    pub items: FxHashMap<SmolStr, Resolution>,
 }
 
 impl ModuleScope {
-    pub(crate) fn entries<'a>(&'a self) -> impl Iterator<Item = (&'a SmolStr, &Resolution)> + 'a {
+    pub fn entries<'a>(&'a self) -> impl Iterator<Item = (&'a SmolStr, &Resolution)> + 'a {
         self.items.iter()
     }
-    pub(crate) fn get(&self, name: &SmolStr) -> Option<&Resolution> {
+    pub fn get(&self, name: &SmolStr) -> Option<&Resolution> {
         self.items.get(name)
     }
 }
@@ -63,7 +63,7 @@ impl ModuleScope {
 /// recomputing name res: if `InputModuleItems` are the same, we can avoid
 /// running name resolution.
 #[derive(Debug, Default, PartialEq, Eq)]
-pub(crate) struct InputModuleItems {
+pub struct InputModuleItems {
     items: Vec<ModuleItem>,
     imports: Vec<Import>,
 }
@@ -89,13 +89,13 @@ struct Import {
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub(crate) struct NamedImport {
-    file_item_id: SourceFileItemId,
-    relative_range: TextRange,
+pub struct NamedImport {
+    pub file_item_id: SourceFileItemId,
+    pub relative_range: TextRange,
 }
 
 impl NamedImport {
-    pub(crate) fn range(&self, db: &impl HirDatabase, file_id: FileId) -> TextRange {
+    pub fn range(&self, db: &impl HirDatabase, file_id: FileId) -> TextRange {
         let source_item_id = SourceItemId {
             file_id,
             item_id: self.file_item_id,
@@ -115,11 +115,11 @@ enum ImportKind {
 /// Resolution is basically `DefId` atm, but it should account for stuff like
 /// multiple namespaces, ambiguity and errors.
 #[derive(Debug, Clone, PartialEq, Eq)]
-pub(crate) struct Resolution {
+pub struct Resolution {
     /// None for unresolved
-    pub(crate) def_id: Option<DefId>,
+    pub def_id: Option<DefId>,
     /// ident by whitch this is imported into local scope.
-    pub(crate) import: Option<NamedImport>,
+    pub import: Option<NamedImport>,
 }
 
 // #[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
@@ -336,109 +336,3 @@ where
         f(module_items)
     }
 }
-
-#[cfg(test)]
-mod tests {
-    use ra_db::FilesDatabase;
-    use crate::{
-        AnalysisChange,
-        mock_analysis::{MockAnalysis, analysis_and_position},
-        hir::{self, HirDatabase},
-};
-    use super::*;
-
-    fn item_map(fixture: &str) -> (Arc<ItemMap>, ModuleId) {
-        let (analysis, pos) = analysis_and_position(fixture);
-        let db = analysis.imp.db;
-        let source_root = db.file_source_root(pos.file_id);
-        let descr = hir::Module::guess_from_position(&*db, pos)
-            .unwrap()
-            .unwrap();
-        let module_id = descr.module_id;
-        (db.item_map(source_root).unwrap(), module_id)
-    }
-
-    #[test]
-    fn test_item_map() {
-        let (item_map, module_id) = item_map(
-            "
-            //- /lib.rs
-            mod foo;
-
-            use crate::foo::bar::Baz;
-            <|>
-
-            //- /foo/mod.rs
-            pub mod bar;
-
-            //- /foo/bar.rs
-            pub struct Baz;
-        ",
-        );
-        let name = SmolStr::from("Baz");
-        let resolution = &item_map.per_module[&module_id].items[&name];
-        assert!(resolution.def_id.is_some());
-    }
-
-    #[test]
-    fn typing_inside_a_function_should_not_invalidate_item_map() {
-        let mock_analysis = MockAnalysis::with_files(
-            "
-            //- /lib.rs
-            mod foo;
-
-            use crate::foo::bar::Baz;
-
-            fn foo() -> i32 {
-                1 + 1
-            }
-            //- /foo/mod.rs
-            pub mod bar;
-
-            //- /foo/bar.rs
-            pub struct Baz;
-        ",
-        );
-
-        let file_id = mock_analysis.id_of("/lib.rs");
-        let mut host = mock_analysis.analysis_host();
-
-        let source_root = host.analysis().imp.db.file_source_root(file_id);
-
-        {
-            let db = host.analysis().imp.db;
-            let events = db.log_executed(|| {
-                db.item_map(source_root).unwrap();
-            });
-            assert!(format!("{:?}", events).contains("item_map"))
-        }
-
-        let mut change = AnalysisChange::new();
-
-        change.change_file(
-            file_id,
-            "
-            mod foo;
-
-            use crate::foo::bar::Baz;
-
-            fn foo() -> i32 { 92 }
-        "
-            .to_string(),
-        );
-
-        host.apply_change(change);
-
-        {
-            let db = host.analysis().imp.db;
-            let events = db.log_executed(|| {
-                db.item_map(source_root).unwrap();
-            });
-            assert!(
-                !format!("{:?}", events).contains("_item_map"),
-                "{:#?}",
-                events
-            )
-        }
-    }
-}
diff --git a/crates/ra_hir/src/path.rs b/crates/ra_hir/src/path.rs
index 8279daf4b..4a2e427cd 100644
--- a/crates/ra_hir/src/path.rs
+++ b/crates/ra_hir/src/path.rs
@@ -1,13 +1,13 @@
 use ra_syntax::{SmolStr, ast, AstNode, TextRange};
 
 #[derive(Debug, Clone, PartialEq, Eq)]
-pub(crate) struct Path {
-    pub(crate) kind: PathKind,
-    pub(crate) segments: Vec<SmolStr>,
+pub struct Path {
+    pub kind: PathKind,
+    pub segments: Vec<SmolStr>,
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub(crate) enum PathKind {
+pub enum PathKind {
     Plain,
     Self_,
     Super,
@@ -16,14 +16,14 @@ pub(crate) enum PathKind {
 
 impl Path {
     /// Calls `cb` with all paths, represented by this use item.
-    pub(crate) fn expand_use_item(item: ast::UseItem, mut cb: impl FnMut(Path, Option<TextRange>)) {
+    pub fn expand_use_item(item: ast::UseItem, mut cb: impl FnMut(Path, Option<TextRange>)) {
         if let Some(tree) = item.use_tree() {
             expand_use_tree(None, tree, &mut cb);
         }
     }
 
     /// Converts an `ast::Path` to `Path`. Works with use trees.
-    pub(crate) fn from_ast(mut path: ast::Path) -> Option<Path> {
+    pub fn from_ast(mut path: ast::Path) -> Option<Path> {
         let mut kind = PathKind::Plain;
         let mut segments = Vec::new();
         loop {
@@ -64,7 +64,7 @@ impl Path {
     }
 
     /// `true` is this path is a single identifier, like `foo`
-    pub(crate) fn is_ident(&self) -> bool {
+    pub fn is_ident(&self) -> bool {
         self.kind == PathKind::Plain && self.segments.len() == 1
     }
 }