bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir_def/src/path/lower/lower_use.rs')
-rw-r--r--crates/hir_def/src/path/lower/lower_use.rs88
1 files changed, 0 insertions, 88 deletions
diff --git a/crates/hir_def/src/path/lower/lower_use.rs b/crates/hir_def/src/path/lower/lower_use.rs
deleted file mode 100644
index 6b777cfeff..0000000000
--- a/crates/hir_def/src/path/lower/lower_use.rs
+++ /dev/null
@@ -1,88 +0,0 @@
-//! Lowers a single complex use like `use foo::{bar, baz};` into a list of paths like
-//! `foo::bar`, `foo::baz`;
-
-use std::iter;
-
-use either::Either;
-use hir_expand::hygiene::Hygiene;
-use syntax::{ast, AstNode};
-
-use crate::{
- db::DefDatabase,
- path::{ModPath, PathKind},
-};
-
-pub(crate) fn convert_path(
- db: &dyn DefDatabase,
- prefix: Option<ModPath>,
- path: ast::Path,
- hygiene: &Hygiene,
-) -> Option<ModPath> {
- let prefix = match path.qualifier() {
- Some(qual) => Some(convert_path(db, prefix, qual, hygiene)?),
- None => prefix,
- };
-
- let segment = path.segment()?;
- let mut mod_path = match segment.kind()? {
- ast::PathSegmentKind::Name(name_ref) => {
- match hygiene.name_ref_to_name(db.upcast(), name_ref) {
- Either::Left(name) => {
- // no type args in use
- let mut res = prefix.unwrap_or_else(|| {
- ModPath::from_kind(
- segment.coloncolon_token().map_or(PathKind::Plain, |_| PathKind::Abs),
- )
- });
- res.segments.push(name);
- res
- }
- Either::Right(crate_id) => {
- return Some(ModPath::from_segments(
- PathKind::DollarCrate(crate_id),
- iter::empty(),
- ))
- }
- }
- }
- ast::PathSegmentKind::CrateKw => {
- if prefix.is_some() {
- return None;
- }
- ModPath::from_segments(PathKind::Crate, iter::empty())
- }
- ast::PathSegmentKind::SelfKw => {
- if prefix.is_some() {
- return None;
- }
- ModPath::from_segments(PathKind::Super(0), iter::empty())
- }
- ast::PathSegmentKind::SuperKw => {
- let nested_super_count = match prefix.map(|p| p.kind) {
- Some(PathKind::Super(n)) => n,
- Some(_) => return None,
- None => 0,
- };
-
- ModPath::from_segments(PathKind::Super(nested_super_count + 1), iter::empty())
- }
- ast::PathSegmentKind::Type { .. } => {
- // not allowed in imports
- return None;
- }
- };
-
- // handle local_inner_macros :
- // Basically, even in rustc it is quite hacky:
- // https://github.com/rust-lang/rust/blob/614f273e9388ddd7804d5cbc80b8865068a3744e/src/librustc_resolve/macros.rs#L456
- // We follow what it did anyway :)
- if mod_path.segments.len() == 1 && mod_path.kind == PathKind::Plain {
- if let Some(_macro_call) = path.syntax().parent().and_then(ast::MacroCall::cast) {
- if let Some(crate_id) = hygiene.local_inner_macros(db.upcast(), path) {
- mod_path.kind = PathKind::DollarCrate(crate_id);
- }
- }
- }
-
- Some(mod_path)
-}