Introduce LowerCtx for path lowering

3 files changed, 9 insertions, 4 deletions

diff --git a/crates/ra_assists/src/assist_ctx.rs b/crates/ra_assists/src/assist_ctx.rs
index 2fe7c3de3..3155a469b 100644
--- a/crates/ra_assists/src/assist_ctx.rs
+++ b/crates/ra_assists/src/assist_ctx.rs
@@ -1,12 +1,12 @@
 //! This module defines `AssistCtx` -- the API surface that is exposed to assists.
 use hir::Semantics;
-use ra_db::FileRange;
+use ra_db::{FileRange, Upcast};
 use ra_fmt::{leading_indent, reindent};
 use ra_ide_db::RootDatabase;
 use ra_syntax::{
     algo::{self, find_covering_element, find_node_at_offset},
-    AstNode, SourceFile, SyntaxElement, SyntaxKind, SyntaxNode, SyntaxToken, TextRange, TextSize,
-    TokenAtOffset,
+    ast, AstNode, SourceFile, SyntaxElement, SyntaxKind, SyntaxNode, SyntaxToken, TextRange,
+    TextSize, TokenAtOffset,
 };
 use ra_text_edit::TextEditBuilder;
 
@@ -136,6 +136,9 @@ impl<'a> AssistCtx<'a> {
     pub(crate) fn covering_node_for_range(&self, range: TextRange) -> SyntaxElement {
         find_covering_element(self.source_file.syntax(), range)
     }
+    pub(crate) fn lower_path(&self, path: ast::Path) -> Option<hir::Path> {
+        hir::Path::from_src(path, &hir::Hygiene::new(self.db.upcast(), self.frange.file_id.into()))
+    }
 }
 
 pub(crate) struct AssistGroup<'a> {
diff --git a/crates/ra_assists/src/ast_transform.rs b/crates/ra_assists/src/ast_transform.rs
index 52b4c82db..9ac65ab39 100644
--- a/crates/ra_assists/src/ast_transform.rs
+++ b/crates/ra_assists/src/ast_transform.rs
@@ -85,6 +85,7 @@ impl<'a> SubstituteTypeParams<'a> {
             ast::TypeRef::PathType(path_type) => path_type.path()?,
             _ => return None,
         };
+        // FIXME: use `hir::Path::from_src` instead.
         let path = hir::Path::from_ast(path)?;
         let resolution = self.source_scope.resolve_hir_path(&path)?;
         match resolution {
@@ -128,6 +129,7 @@ impl<'a> QualifyPaths<'a> {
             // don't try to qualify `Fn(Foo) -> Bar` paths, they are in prelude anyway
             return None;
         }
+        // FIXME: use `hir::Path::from_src` instead.
         let hir_path = hir::Path::from_ast(p.clone());
         let resolution = self.source_scope.resolve_hir_path(&hir_path?)?;
         match resolution {
diff --git a/crates/ra_assists/src/handlers/replace_qualified_name_with_use.rs b/crates/ra_assists/src/handlers/replace_qualified_name_with_use.rs
index 2f02df303..ad59db392 100644
--- a/crates/ra_assists/src/handlers/replace_qualified_name_with_use.rs
+++ b/crates/ra_assists/src/handlers/replace_qualified_name_with_use.rs
@@ -27,7 +27,7 @@ pub(crate) fn replace_qualified_name_with_use(ctx: AssistCtx) -> Option<Assist>
         return None;
     }
 
-    let hir_path = hir::Path::from_ast(path.clone())?;
+    let hir_path = ctx.lower_path(path.clone())?;
     let segments = collect_hir_path_segments(&hir_path)?;
     if segments.len() < 2 {
         return None;