introduce ComletionItemKind

crates/ra_analysis/src/completion/complete_fn_param.rs

@@ -34,9 +34,8 @@ pub(super) fn complete_fn_param(acc: &mut Completions, ctx: &CompletionContext)
             }
         })
         .for_each(|(label, lookup)| {
-            CompletionItem::new(label)
+            CompletionItem::new(CompletionKind::Magic, label)
                 .lookup_by(lookup)
-                .kind(CompletionKind::Magic)
                 .add_to(acc)
         });
 

crates/ra_analysis/src/completion/complete_keyword.rs

@@ -61,10 +61,7 @@ fn complete_return(fn_def: ast::FnDef, is_stmt: bool) -> Option<CompletionItem>
 }
 
 fn keyword(kw: &str, snippet: &str) -> CompletionItem {
-    CompletionItem::new(kw)
-        .kind(Keyword)
-        .snippet(snippet)
-        .build()
+    CompletionItem::new(Keyword, kw).snippet(snippet).build()
 }
 
 #[cfg(test)]

crates/ra_analysis/src/completion/complete_path.rs

@@ -17,11 +17,9 @@ pub(super) fn complete_path(acc: &mut Completions, ctx: &CompletionContext) -> C
         _ => return Ok(()),
     };
     let module_scope = target_module.scope(ctx.db)?;
-    module_scope.entries().for_each(|(name, _res)| {
-        CompletionItem::new(name.to_string())
-            .kind(Reference)
-            .add_to(acc)
-    });
+    module_scope
+        .entries()
+        .for_each(|(name, _res)| CompletionItem::new(Reference, name.to_string()).add_to(acc));
     Ok(())
 }
 

crates/ra_analysis/src/completion/complete_scope.rs

@@ -29,11 +29,7 @@ pub(super) fn complete_scope(acc: &mut Completions, ctx: &CompletionContext) ->
                     }
                 }
             })
-            .for_each(|(name, _res)| {
-                CompletionItem::new(name.to_string())
-                    .kind(Reference)
-                    .add_to(acc)
-            });
+            .for_each(|(name, _res)| CompletionItem::new(Reference, name.to_string()).add_to(acc));
     }
 
     Ok(())
@@ -45,13 +41,9 @@ fn complete_fn(acc: &mut Completions, scopes: &hir::FnScopes, offset: TextUnit)
         .scope_chain_for_offset(offset)
         .flat_map(|scope| scopes.entries(scope).iter())
         .filter(|entry| shadowed.insert(entry.name()))
-        .for_each(|entry| {
-            CompletionItem::new(entry.name().to_string())
-                .kind(Reference)
-                .add_to(acc)
-        });
+        .for_each(|entry| CompletionItem::new(Reference, entry.name().to_string()).add_to(acc));
     if scopes.self_param.is_some() {
-        CompletionItem::new("self").kind(Reference).add_to(acc);
+        CompletionItem::new(Reference, "self").add_to(acc);
     }
 }
 

crates/ra_analysis/src/completion/complete_snippet.rs

@@ -4,13 +4,11 @@ pub(super) fn complete_expr_snippet(acc: &mut Completions, ctx: &CompletionConte
     if !(ctx.is_trivial_path && ctx.enclosing_fn.is_some()) {
         return;
     }
-    CompletionItem::new("pd")
+    CompletionItem::new(Snippet, "pd")
         .snippet("eprintln!(\"$0 = {:?}\", $0);")
-        .kind(Snippet)
         .add_to(acc);
-    CompletionItem::new("ppd")
+    CompletionItem::new(Snippet, "ppd")
         .snippet("eprintln!(\"$0 = {:#?}\", $0);")
-        .kind(Snippet)
         .add_to(acc);
 }
 
@@ -18,7 +16,7 @@ pub(super) fn complete_item_snippet(acc: &mut Completions, ctx: &CompletionConte
     if !ctx.is_new_item {
         return;
     }
-    CompletionItem::new("Test function")
+    CompletionItem::new(Snippet, "Test function")
         .lookup_by("tfn")
         .snippet(
             "\
@@ -27,11 +25,9 @@ fn ${1:feature}() {
     $0
 }",
         )
-        .kind(Snippet)
         .add_to(acc);
-    CompletionItem::new("pub(crate)")
+    CompletionItem::new(Snippet, "pub(crate)")
         .snippet("pub(crate) $0")
-        .kind(Snippet)
         .add_to(acc);
 }
 

crates/ra_analysis/src/completion/completion_item.rs

@@ -6,7 +6,9 @@ pub struct CompletionItem {
     label: String,
     lookup: Option<String>,
     snippet: Option<String>,
-    /// Used only internally in test, to check only specific kind of completion.
+    kind: Option<CompletionItemKind>,
+    /// Used only internally in tests, to check only specific kind of
+    /// completion.
     completion_kind: CompletionKind,
 }
 
@@ -15,6 +17,12 @@ pub enum InsertText {
     Snippet { text: String },
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum CompletionItemKind {
+    Snippet,
+    Keyword,
+}
+
 #[derive(Debug, PartialEq, Eq)]
 pub(crate) enum CompletionKind {
     /// Parser-based keyword completion.
@@ -24,17 +32,16 @@ pub(crate) enum CompletionKind {
     /// "Secret sauce" completions.
     Magic,
     Snippet,
-    Unspecified,
 }
 
 impl CompletionItem {
-    pub(crate) fn new(label: impl Into<String>) -> Builder {
+    pub(crate) fn new(completion_kind: CompletionKind, label: impl Into<String>) -> Builder {
         let label = label.into();
         Builder {
             label,
             lookup: None,
             snippet: None,
-            completion_kind: CompletionKind::Unspecified,
+            completion_kind,
         }
     }
     /// What user sees in pop-up in the UI.
@@ -57,6 +64,10 @@ impl CompletionItem {
             Some(it) => InsertText::Snippet { text: it.clone() },
         }
     }
+
+    pub fn kind(&self) -> Option<CompletionItemKind> {
+        self.kind
+    }
 }
 
 /// A helper to make `CompletionItem`s.
@@ -78,6 +89,7 @@ impl Builder {
             label: self.label,
             lookup: self.lookup,
             snippet: self.snippet,
+            kind: None,
             completion_kind: self.completion_kind,
         }
     }