6 files changed, 33 insertions, 26 deletions

diff --git a/crates/ra_hir/src/db.rs b/crates/ra_hir/src/db.rs
index 8f98ca3a5..8e827d4f5 100644
--- a/crates/ra_hir/src/db.rs
+++ b/crates/ra_hir/src/db.rs
@@ -1,6 +1,6 @@
 use std::sync::{Arc, Mutex};
 
-use ra_syntax::{SyntaxNode, TreeArc, SourceFile, SmolStr, ast};
+use ra_syntax::{SyntaxNode, TreeArc, SmolStr, ast};
 use ra_db::{SourceDatabase, salsa};
 
 use crate::{
@@ -54,8 +54,8 @@ pub trait DefDatabase: SourceDatabase {
     #[salsa::invoke(crate::ids::macro_expand_query)]
     fn macro_expand(&self, macro_call: ids::MacroCallId) -> Result<Arc<tt::Subtree>, String>;
 
-    #[salsa::invoke(crate::ids::HirFileId::hir_parse_query)]
-    fn hir_parse(&self, file_id: HirFileId) -> TreeArc<SourceFile>;
+    #[salsa::invoke(crate::ids::HirFileId::parse_or_expand_query)]
+    fn parse_or_expand(&self, file_id: HirFileId) -> Option<TreeArc<SyntaxNode>>;
 
     #[salsa::invoke(crate::adt::StructData::struct_data_query)]
     fn struct_data(&self, s: Struct) -> Arc<StructData>;
diff --git a/crates/ra_hir/src/diagnostics.rs b/crates/ra_hir/src/diagnostics.rs
index d41525779..4b7b2dbee 100644
--- a/crates/ra_hir/src/diagnostics.rs
+++ b/crates/ra_hir/src/diagnostics.rs
@@ -1,6 +1,6 @@
 use std::{fmt, any::Any};
 
-use ra_syntax::{SyntaxNodePtr, TreeArc, AstPtr, TextRange, ast, SyntaxNode, AstNode};
+use ra_syntax::{SyntaxNodePtr, TreeArc, AstPtr, TextRange, ast, SyntaxNode};
 use relative_path::RelativePathBuf;
 
 use crate::{HirFileId, HirDatabase, Name};
@@ -29,8 +29,8 @@ pub trait Diagnostic: Any + Send + Sync + fmt::Debug + 'static {
 
 impl dyn Diagnostic {
     pub fn syntax_node(&self, db: &impl HirDatabase) -> TreeArc<SyntaxNode> {
-        let source_file = db.hir_parse(self.file());
-        self.syntax_node_ptr().to_node(source_file.syntax()).to_owned()
+        let node = db.parse_or_expand(self.file()).unwrap();
+        self.syntax_node_ptr().to_node(&*node).to_owned()
     }
     pub fn downcast_ref<D: Diagnostic>(&self) -> Option<&D> {
         self.as_any().downcast_ref()
diff --git a/crates/ra_hir/src/ids.rs b/crates/ra_hir/src/ids.rs
index 357ef2a80..659b21f72 100644
--- a/crates/ra_hir/src/ids.rs
+++ b/crates/ra_hir/src/ids.rs
@@ -4,7 +4,7 @@ use std::{
 };
 
 use ra_db::{FileId, salsa};
-use ra_syntax::{TreeArc, SourceFile, AstNode, ast};
+use ra_syntax::{TreeArc, AstNode, ast, SyntaxNode};
 use mbe::MacroRules;
 
 use crate::{
@@ -56,17 +56,17 @@ impl HirFileId {
         }
     }
 
-    pub(crate) fn hir_parse_query(
+    pub(crate) fn parse_or_expand_query(
         db: &impl DefDatabase,
         file_id: HirFileId,
-    ) -> TreeArc<SourceFile> {
+    ) -> Option<TreeArc<SyntaxNode>> {
         match file_id.0 {
-            HirFileIdRepr::File(file_id) => db.parse(file_id),
+            HirFileIdRepr::File(file_id) => Some(db.parse(file_id).syntax().to_owned()),
             HirFileIdRepr::Macro(macro_file) => {
                 let macro_call_id = macro_file.macro_call_id;
-                let tt = match db.macro_expand(macro_call_id) {
-                    Ok(it) => it,
-                    Err(err) => {
+                let tt = db
+                    .macro_expand(macro_call_id)
+                    .map_err(|err| {
                         // Note:
                         // The final goal we would like to make all parse_macro success,
                         // such that the following log will not call anyway.
@@ -75,12 +75,12 @@ impl HirFileId {
                             err,
                             macro_call_id.debug_dump(db)
                         );
-                        // returning an empty string looks fishy...
-                        return SourceFile::parse("");
-                    }
-                };
+                    })
+                    .ok()?;
                 match macro_file.macro_file_kind {
-                    MacroFileKind::Items => mbe::token_tree_to_ast_item_list(&tt),
+                    MacroFileKind::Items => {
+                        Some(mbe::token_tree_to_ast_item_list(&tt).syntax().to_owned())
+                    }
                 }
             }
         }
diff --git a/crates/ra_hir/src/nameres/raw.rs b/crates/ra_hir/src/nameres/raw.rs
index 211e02068..bd32b264b 100644
--- a/crates/ra_hir/src/nameres/raw.rs
+++ b/crates/ra_hir/src/nameres/raw.rs
@@ -75,8 +75,11 @@ impl RawItems {
             source_ast_id_map: db.ast_id_map(file_id.into()),
             source_map: ImportSourceMap::default(),
         };
-        let source_file = db.hir_parse(file_id);
-        collector.process_module(None, &*source_file);
+        if let Some(node) = db.parse_or_expand(file_id) {
+            if let Some(source_file) = ast::SourceFile::cast(&node) {
+                collector.process_module(None, &*source_file);
+            }
+        }
         (Arc::new(collector.raw_items), Arc::new(collector.source_map))
     }
 
diff --git a/crates/ra_hir/src/source_id.rs b/crates/ra_hir/src/source_id.rs
index 7a39be779..13f548eaf 100644
--- a/crates/ra_hir/src/source_id.rs
+++ b/crates/ra_hir/src/source_id.rs
@@ -81,15 +81,19 @@ pub struct ErasedFileAstId(RawId);
 impl_arena_id!(ErasedFileAstId);
 
 /// Maps items' `SyntaxNode`s to `ErasedFileAstId`s and back.
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq, Default)]
 pub struct AstIdMap {
     arena: Arena<ErasedFileAstId, SyntaxNodePtr>,
 }
 
 impl AstIdMap {
     pub(crate) fn ast_id_map_query(db: &impl DefDatabase, file_id: HirFileId) -> Arc<AstIdMap> {
-        let source_file = db.hir_parse(file_id);
-        Arc::new(AstIdMap::from_source(source_file.syntax()))
+        let map = if let Some(node) = db.parse_or_expand(file_id) {
+            AstIdMap::from_source(&*node)
+        } else {
+            AstIdMap::default()
+        };
+        Arc::new(map)
     }
 
     pub(crate) fn file_item_query(
@@ -97,8 +101,8 @@ impl AstIdMap {
         file_id: HirFileId,
         ast_id: ErasedFileAstId,
     ) -> TreeArc<SyntaxNode> {
-        let source_file = db.hir_parse(file_id);
-        db.ast_id_map(file_id).arena[ast_id].to_node(source_file.syntax()).to_owned()
+        let node = db.parse_or_expand(file_id).unwrap();
+        db.ast_id_map(file_id).arena[ast_id].to_node(&*node).to_owned()
     }
 
     pub(crate) fn ast_id<N: AstNode>(&self, item: &N) -> FileAstId<N> {
diff --git a/crates/ra_ide_api/src/change.rs b/crates/ra_ide_api/src/change.rs
index dc6a433c4..2434f428f 100644
--- a/crates/ra_ide_api/src/change.rs
+++ b/crates/ra_ide_api/src/change.rs
@@ -222,7 +222,7 @@ impl RootDatabase {
 
         self.query(ra_db::ParseQuery).sweep(sweep);
 
-        self.query(hir::db::HirParseQuery).sweep(sweep);
+        self.query(hir::db::ParseOrExpandQuery).sweep(sweep);
         self.query(hir::db::AstIdMapQuery).sweep(sweep);
         self.query(hir::db::AstIdToNodeQuery).sweep(sweep);