From cb863390f23bc2eac6561d55def9bd3ba54605fc Mon Sep 17 00:00:00 2001
From: Lukas Wirth <lukastw97@gmail.com>
Date: Fri, 15 Jan 2021 18:57:32 +0100
Subject: Handle self/super/crate in PathSegment as NameRef

---
 crates/syntax/src/algo.rs                |  2 +-
 crates/syntax/src/ast/generated/nodes.rs |  6 +++---
 crates/syntax/src/ast/node_ext.rs        | 22 ++++++++++++++++++----
 crates/syntax/src/validation.rs          |  2 +-
 4 files changed, 23 insertions(+), 9 deletions(-)

(limited to 'crates/syntax/src')

diff --git a/crates/syntax/src/algo.rs b/crates/syntax/src/algo.rs
index 384d031e7..39da45cc0 100644
--- a/crates/syntax/src/algo.rs
+++ b/crates/syntax/src/algo.rs
@@ -883,7 +883,7 @@ use crate::AstNode;
 
                 replacements:
 
-                Line 2: Node(NAME_REF@5..14) -> crate
+                Line 2: Token(IDENT@5..14 "text_edit") -> crate
                 Line 2: Token(IDENT@16..24 "TextEdit") -> AstNode
                 Line 2: Token(WHITESPACE@25..27 "\n\n") -> "\n"
 
diff --git a/crates/syntax/src/ast/generated/nodes.rs b/crates/syntax/src/ast/generated/nodes.rs
index 9c96d3d07..1d722db3c 100644
--- a/crates/syntax/src/ast/generated/nodes.rs
+++ b/crates/syntax/src/ast/generated/nodes.rs
@@ -18,6 +18,9 @@ pub struct NameRef {
 }
 impl NameRef {
     pub fn ident_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![ident]) }
+    pub fn self_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![self]) }
+    pub fn super_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![super]) }
+    pub fn crate_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![crate]) }
 }
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct Lifetime {
@@ -42,9 +45,6 @@ pub struct PathSegment {
     pub(crate) syntax: SyntaxNode,
 }
 impl PathSegment {
-    pub fn crate_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![crate]) }
-    pub fn self_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![self]) }
-    pub fn super_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![super]) }
     pub fn coloncolon_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![::]) }
     pub fn name_ref(&self) -> Option<NameRef> { support::child(&self.syntax) }
     pub fn generic_arg_list(&self) -> Option<GenericArgList> { support::child(&self.syntax) }
diff --git a/crates/syntax/src/ast/node_ext.rs b/crates/syntax/src/ast/node_ext.rs
index 27381ba80..b8ce71d27 100644
--- a/crates/syntax/src/ast/node_ext.rs
+++ b/crates/syntax/src/ast/node_ext.rs
@@ -156,14 +156,28 @@ impl ast::PathSegment {
             .expect("segments are always nested in paths")
     }
 
+    pub fn crate_token(&self) -> Option<SyntaxToken> {
+        self.name_ref().and_then(|it| it.crate_token())
+    }
+
+    pub fn self_token(&self) -> Option<SyntaxToken> {
+        self.name_ref().and_then(|it| it.self_token())
+    }
+
+    pub fn super_token(&self) -> Option<SyntaxToken> {
+        self.name_ref().and_then(|it| it.super_token())
+    }
+
     pub fn kind(&self) -> Option<PathSegmentKind> {
         let res = if let Some(name_ref) = self.name_ref() {
-            PathSegmentKind::Name(name_ref)
+            match name_ref.syntax().first_token().map(|it| it.kind()) {
+                Some(T![self]) => PathSegmentKind::SelfKw,
+                Some(T![super]) => PathSegmentKind::SuperKw,
+                Some(T![crate]) => PathSegmentKind::CrateKw,
+                _ => PathSegmentKind::Name(name_ref),
+            }
         } else {
             match self.syntax().first_child_or_token()?.kind() {
-                T![self] => PathSegmentKind::SelfKw,
-                T![super] => PathSegmentKind::SuperKw,
-                T![crate] => PathSegmentKind::CrateKw,
                 T![<] => {
                     // <T> or <T as Trait>
                     // T is any TypeRef, Trait has to be a PathType
diff --git a/crates/syntax/src/validation.rs b/crates/syntax/src/validation.rs
index bfa2dc4ba..7901580ee 100644
--- a/crates/syntax/src/validation.rs
+++ b/crates/syntax/src/validation.rs
@@ -256,7 +256,7 @@ fn validate_path_keywords(segment: ast::PathSegment, errors: &mut Vec<SyntaxErro
             ));
         }
     } else if let Some(token) = segment.super_token() {
-        if !all_supers(&path) {
+        if segment.coloncolon_token().is_some() || !all_supers(&path) {
             errors.push(SyntaxError::new(
                 "The `super` keyword may only be preceded by other `super`s",
                 token.text_range(),
-- 
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