From de9670fe456d89f97e8044d4e0919d2c16d1087f Mon Sep 17 00:00:00 2001
From: uHOOCCOOHu <hooccooh1896@gmail.com>
Date: Sun, 15 Sep 2019 19:48:24 +0800
Subject: Move store TypeRef of type based path in PathKind

---
 crates/ra_hir/src/nameres.rs |  9 +++------
 crates/ra_hir/src/path.rs    | 19 ++++++-------------
 crates/ra_hir/src/resolve.rs |  2 +-
 3 files changed, 10 insertions(+), 20 deletions(-)

(limited to 'crates/ra_hir/src')

diff --git a/crates/ra_hir/src/nameres.rs b/crates/ra_hir/src/nameres.rs
index be1cc76b6..b808a0c36 100644
--- a/crates/ra_hir/src/nameres.rs
+++ b/crates/ra_hir/src/nameres.rs
@@ -382,7 +382,7 @@ impl CrateDefMap {
                     return ResolvePathResult::empty(ReachedFixedPoint::No); // extern crate declarations can add to the extern prelude
                 }
             }
-            PathKind::Type => {
+            PathKind::Type(_) => {
                 // This is handled in `infer::infer_path_expr`
                 // The result returned here does not matter
                 return ResolvePathResult::empty(ReachedFixedPoint::Yes);
@@ -406,11 +406,8 @@ impl CrateDefMap {
             curr_per_ns = match curr {
                 ModuleDef::Module(module) => {
                     if module.krate != self.krate {
-                        let path = Path {
-                            segments: path.segments[i..].to_vec(),
-                            kind: PathKind::Self_,
-                            type_ref: None,
-                        };
+                        let path =
+                            Path { segments: path.segments[i..].to_vec(), kind: PathKind::Self_ };
                         log::debug!("resolving {:?} in other crate", path);
                         let defp_map = db.crate_def_map(module.krate);
                         let (def, s) = defp_map.resolve_path(db, module.module_id, &path);
diff --git a/crates/ra_hir/src/path.rs b/crates/ra_hir/src/path.rs
index 7c19fda14..9e449f6cc 100644
--- a/crates/ra_hir/src/path.rs
+++ b/crates/ra_hir/src/path.rs
@@ -10,7 +10,6 @@ use crate::{name, type_ref::TypeRef, AsName, Name};
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct Path {
     pub kind: PathKind,
-    pub type_ref: Option<Box<TypeRef>>,
     pub segments: Vec<PathSegment>,
 }
 
@@ -43,7 +42,7 @@ pub enum GenericArg {
     // or lifetime...
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub enum PathKind {
     Plain,
     Self_,
@@ -52,7 +51,7 @@ pub enum PathKind {
     // Absolute path
     Abs,
     // Type based path like `<T>::foo`
-    Type,
+    Type(Box<TypeRef>),
 }
 
 impl Path {
@@ -69,7 +68,6 @@ impl Path {
     pub fn from_simple_segments(kind: PathKind, segments: impl IntoIterator<Item = Name>) -> Path {
         Path {
             kind,
-            type_ref: None,
             segments: segments
                 .into_iter()
                 .map(|name| PathSegment { name, args_and_bindings: None })
@@ -81,7 +79,6 @@ impl Path {
     pub fn from_ast(mut path: ast::Path) -> Option<Path> {
         let mut kind = PathKind::Plain;
         let mut segments = Vec::new();
-        let mut path_type_ref = None;
         loop {
             let segment = path.segment()?;
 
@@ -112,8 +109,7 @@ impl Path {
                     match trait_ref {
                         // <T>::foo
                         None => {
-                            kind = PathKind::Type;
-                            path_type_ref = Some(Box::new(self_type));
+                            kind = PathKind::Type(Box::new(self_type));
                         }
                         // <T as Trait<A>>::Foo desugars to Trait<Self=T, A>::Foo
                         Some(trait_ref) => {
@@ -154,7 +150,7 @@ impl Path {
             };
         }
         segments.reverse();
-        return Some(Path { kind, type_ref: path_type_ref, segments });
+        return Some(Path { kind, segments });
 
         fn qualifier(path: &ast::Path) -> Option<ast::Path> {
             if let Some(q) = path.qualifier() {
@@ -309,11 +305,8 @@ fn convert_path(prefix: Option<Path>, path: ast::Path) -> Option<Path> {
     let res = match segment.kind()? {
         ast::PathSegmentKind::Name(name) => {
             // no type args in use
-            let mut res = prefix.unwrap_or_else(|| Path {
-                kind: PathKind::Plain,
-                type_ref: None,
-                segments: Vec::with_capacity(1),
-            });
+            let mut res = prefix
+                .unwrap_or_else(|| Path { kind: PathKind::Plain, segments: Vec::with_capacity(1) });
             res.segments.push(PathSegment {
                 name: name.as_name(),
                 args_and_bindings: None, // no type args in use
diff --git a/crates/ra_hir/src/resolve.rs b/crates/ra_hir/src/resolve.rs
index e357c74e3..bb6915901 100644
--- a/crates/ra_hir/src/resolve.rs
+++ b/crates/ra_hir/src/resolve.rs
@@ -190,7 +190,7 @@ impl Resolver {
         db: &impl HirDatabase,
         path: &'p Path,
     ) -> Option<ResolveValueResult<'p>> {
-        if let Some(type_ref) = &path.type_ref {
+        if let PathKind::Type(type_ref) = &path.kind {
             return Some(ResolveValueResult::TypeRef(type_ref));
         }
 
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