Auto merge of #12173 - Veykril:completion-rev, r=Veykril

internal: completion PathKind is not optional

crates/ide-completion/src/completions/attribute.rs

@@ -71,7 +71,7 @@ pub(crate) fn complete_known_attribute_input(
 pub(crate) fn complete_attribute(acc: &mut Completions, ctx: &CompletionContext) {
     let (is_absolute_path, qualifier, is_inner, annotated_item_kind) = match ctx.path_context {
         Some(PathCompletionCtx {
-            kind: Some(PathKind::Attr { kind, annotated_item_kind }),
+            kind: PathKind::Attr { kind, annotated_item_kind },
             is_absolute_path,
             ref qualifier,
             ..

crates/ide-completion/src/completions/attribute/derive.rs

@@ -13,10 +13,7 @@
 pub(crate) fn complete_derive(acc: &mut Completions, ctx: &CompletionContext) {
     let (qualifier, is_absolute_path) = match ctx.path_context {
         Some(PathCompletionCtx {
-            kind: Some(PathKind::Derive),
+            kind: PathKind::Derive, ref qualifier, is_absolute_path, ..
-            ref qualifier,
-            is_absolute_path,
-            ..
         }) => (qualifier, is_absolute_path),
         _ => return,
     };

crates/ide-completion/src/completions/dot.rs

@@ -2,7 +2,11 @@
 
 use ide_db::FxHashSet;
 
-use crate::{context::CompletionContext, patterns::ImmediateLocation, Completions};
+use crate::{
+    context::{CompletionContext, PathCompletionCtx, PathKind},
+    patterns::ImmediateLocation,
+    Completions,
+};
 
 /// Complete dot accesses, i.e. fields or methods.
 pub(crate) fn complete_dot(acc: &mut Completions, ctx: &CompletionContext) {
@@ -34,9 +38,16 @@ fn complete_undotted_self(acc: &mut Completions, ctx: &CompletionContext) {
     if !ctx.config.enable_self_on_the_fly {
         return;
     }
-    if ctx.is_non_trivial_path() || ctx.is_path_disallowed() || !ctx.expects_expression() {
+    match ctx.path_context {
-        return;
+        Some(PathCompletionCtx {
+            is_absolute_path: false,
+            qualifier: None,
+            kind: PathKind::Expr,
+            ..
+        }) if !ctx.is_path_disallowed() => {}
+        _ => return,
     }
+
     if let Some(func) = ctx.function_def.as_ref().and_then(|fn_| ctx.sema.to_def(fn_)) {
         if let Some(self_) = func.self_param(ctx.db) {
             let ty = self_.ty(ctx.db);

crates/ide-completion/src/completions/expr.rs

@@ -15,9 +15,9 @@ pub(crate) fn complete_expr_path(acc: &mut Completions, ctx: &CompletionContext)
     }
 
     let (&is_absolute_path, qualifier) = match &ctx.path_context {
-        Some(PathCompletionCtx {
+        Some(PathCompletionCtx { kind: PathKind::Expr, is_absolute_path, qualifier, .. }) => {
-            kind: Some(PathKind::Expr), is_absolute_path, qualifier, ..
+            (is_absolute_path, qualifier)
-        }) => (is_absolute_path, qualifier),
+        }
         _ => return,
     };
 

crates/ide-completion/src/completions/item_list.rs

@@ -13,9 +13,9 @@ pub(crate) fn complete_item_list(acc: &mut Completions, ctx: &CompletionContext)
     }
 
     let (&is_absolute_path, qualifier) = match &ctx.path_context {
-        Some(PathCompletionCtx {
+        Some(PathCompletionCtx { kind: PathKind::Item, is_absolute_path, qualifier, .. }) => {
-            kind: Some(PathKind::Item), is_absolute_path, qualifier, ..
+            (is_absolute_path, qualifier)
-        }) => (is_absolute_path, qualifier),
+        }
         _ => return,
     };
 

crates/ide-completion/src/completions/type.rs

@@ -17,9 +17,9 @@ pub(crate) fn complete_type_path(acc: &mut Completions, ctx: &CompletionContext)
     }
 
     let (&is_absolute_path, qualifier) = match &ctx.path_context {
-        Some(PathCompletionCtx {
+        Some(PathCompletionCtx { kind: PathKind::Type, is_absolute_path, qualifier, .. }) => {
-            kind: Some(PathKind::Type), is_absolute_path, qualifier, ..
+            (is_absolute_path, qualifier)
-        }) => (is_absolute_path, qualifier),
+        }
         _ => return,
     };
 

crates/ide-completion/src/completions/use_.rs

@@ -12,9 +12,9 @@
 
 pub(crate) fn complete_use_tree(acc: &mut Completions, ctx: &CompletionContext) {
     let (&is_absolute_path, qualifier) = match &ctx.path_context {
-        Some(PathCompletionCtx {
+        Some(PathCompletionCtx { kind: PathKind::Use, is_absolute_path, qualifier, .. }) => {
-            kind: Some(PathKind::Use), is_absolute_path, qualifier, ..
+            (is_absolute_path, qualifier)
-        }) => (is_absolute_path, qualifier),
+        }
         _ => return,
     };
 

crates/ide-completion/src/completions/vis.rs

@@ -10,7 +10,7 @@
 pub(crate) fn complete_vis(acc: &mut Completions, ctx: &CompletionContext) {
     let (&is_absolute_path, qualifier, &has_in_token) = match &ctx.path_context {
         Some(PathCompletionCtx {
-            kind: Some(PathKind::Vis { has_in_token }),
+            kind: PathKind::Vis { has_in_token },
             is_absolute_path,
             qualifier,
             ..

crates/ide-completion/src/context.rs

@@ -75,8 +75,7 @@ pub(crate) struct PathCompletionCtx {
     // FIXME: use this
     /// The parent of the path we are completing.
     pub(super) parent: Option<ast::Path>,
-    // FIXME: This should be PathKind, the none case should never occur
+    pub(super) kind: PathKind,
-    pub(super) kind: Option<PathKind>,
     /// Whether the path segment has type args or not.
     pub(super) has_type_args: bool,
     /// `true` if we are a statement or a last expr in the block.
@@ -315,11 +314,11 @@ pub(crate) fn is_path_disallowed(&self) -> bool {
     }
 
     pub(crate) fn expects_expression(&self) -> bool {
-        matches!(self.path_context, Some(PathCompletionCtx { kind: Some(PathKind::Expr), .. }))
+        matches!(self.path_context, Some(PathCompletionCtx { kind: PathKind::Expr, .. }))
     }
 
     pub(crate) fn expects_type(&self) -> bool {
-        matches!(self.path_context, Some(PathCompletionCtx { kind: Some(PathKind::Type), .. }))
+        matches!(self.path_context, Some(PathCompletionCtx { kind: PathKind::Type, .. }))
     }
 
     pub(crate) fn path_is_call(&self) -> bool {
@@ -341,7 +340,7 @@ pub(crate) fn path_qual(&self) -> Option<&ast::Path> {
     }
 
     pub(crate) fn path_kind(&self) -> Option<PathKind> {
-        self.path_context.as_ref().and_then(|it| it.kind)
+        self.path_context.as_ref().map(|it| it.kind)
     }
 
     pub(crate) fn is_immediately_after_macro_bang(&self) -> bool {
@@ -837,7 +836,7 @@ fn fill(
                     Self::classify_name_ref(&self.sema, &original_file, name_ref)
                 {
                     self.path_context =
-                        Some(PathCompletionCtx { kind: Some(PathKind::Derive), ..path_ctx });
+                        Some(PathCompletionCtx { kind: PathKind::Derive, ..path_ctx });
                 }
             }
             return;
@@ -969,7 +968,7 @@ fn classify_name_ref(
             is_absolute_path: false,
             qualifier: None,
             parent: path.parent_path(),
-            kind: None,
+            kind: PathKind::Item,
             has_type_args: false,
             can_be_stmt: false,
             in_loop_body: false,
@@ -1041,7 +1040,7 @@ fn classify_name_ref(
                 }
             };
             Some(kind)
-        }).flatten();
+        }).flatten()?;
         path_ctx.has_type_args = segment.generic_arg_list().is_some();
 
         if let Some((path, use_tree_parent)) = path_or_use_tree_qualifier(&path) {

crates/ide-completion/src/render.rs

@@ -273,7 +273,7 @@ fn render_resolution_simple_(
     // Add `<>` for generic types
     let type_path_no_ty_args = matches!(
         ctx.completion.path_context,
-        Some(PathCompletionCtx { kind: Some(PathKind::Type), has_type_args: false, .. })
+        Some(PathCompletionCtx { kind: PathKind::Type, has_type_args: false, .. })
     ) && ctx.completion.config.add_call_parenthesis;
     if type_path_no_ty_args {
         if let Some(cap) = ctx.snippet_cap() {

crates/ide-completion/src/render/function.rs

@@ -197,10 +197,10 @@ fn should_add_parens(ctx: &CompletionContext) -> bool {
     }
 
     match ctx.path_context {
-        Some(PathCompletionCtx { kind: Some(PathKind::Expr), has_call_parens: true, .. }) => {
+        Some(PathCompletionCtx { kind: PathKind::Expr, has_call_parens: true, .. }) => {
             return false
         }
-        Some(PathCompletionCtx { kind: Some(PathKind::Use | PathKind::Type), .. }) => {
+        Some(PathCompletionCtx { kind: PathKind::Use | PathKind::Type, .. }) => {
             cov_mark::hit!(no_parens_in_use_item);
             return false;
         }

crates/ide-completion/src/render/macro_.rs

@@ -35,7 +35,7 @@ fn render(
 
     let needs_bang = match completion.path_context {
         Some(PathCompletionCtx { kind, has_macro_bang, .. }) => {
-            is_fn_like && kind != Some(PathKind::Use) && !has_macro_bang
+            is_fn_like && kind != PathKind::Use && !has_macro_bang
         }
         _ => is_fn_like,
     };