From 78a21253b494e573885ac8336bff6e93b401046f Mon Sep 17 00:00:00 2001
From: Kirill Bulatov <mail4score@gmail.com>
Date: Sun, 12 Jan 2020 00:40:36 +0200
Subject: Apply the api design suggestions

---
 crates/ra_assists/src/lib.rs | 40 +++++++++++++++++++++++++++-------------
 1 file changed, 27 insertions(+), 13 deletions(-)

(limited to 'crates/ra_assists/src/lib.rs')

diff --git a/crates/ra_assists/src/lib.rs b/crates/ra_assists/src/lib.rs
index 95a530821..a2983ae87 100644
--- a/crates/ra_assists/src/lib.rs
+++ b/crates/ra_assists/src/lib.rs
@@ -14,6 +14,7 @@ mod test_db;
 pub mod ast_transform;
 
 use hir::db::HirDatabase;
+use itertools::Either;
 use ra_db::FileRange;
 use ra_syntax::{TextRange, TextUnit};
 use ra_text_edit::TextEdit;
@@ -41,6 +42,21 @@ pub struct AssistAction {
     pub target: Option<TextRange>,
 }
 
+#[derive(Debug, Clone)]
+pub struct ResolvedAssist {
+    pub label: AssistLabel,
+    pub action_data: Either<AssistAction, Vec<AssistAction>>,
+}
+
+impl ResolvedAssist {
+    pub fn get_first_action(&self) -> AssistAction {
+        match &self.action_data {
+            Either::Left(action) => action.clone(),
+            Either::Right(actions) => actions[0].clone(),
+        }
+    }
+}
+
 /// Return all the assists applicable at the given position.
 ///
 /// Assists are returned in the "unresolved" state, that is only labels are
@@ -65,7 +81,7 @@ where
 ///
 /// Assists are returned in the "resolved" state, that is with edit fully
 /// computed.
-pub fn assists<H>(db: &H, range: FileRange) -> Vec<(AssistLabel, AssistAction, Vec<AssistAction>)>
+pub fn assists<H>(db: &H, range: FileRange) -> Vec<ResolvedAssist>
 where
     H: HirDatabase + 'static,
 {
@@ -76,13 +92,11 @@ where
             .iter()
             .filter_map(|f| f(ctx.clone()))
             .map(|a| match a {
-                Assist::Resolved { label, action, alternative_actions } => {
-                    (label, action, alternative_actions)
-                }
+                Assist::Resolved { assist } => assist,
                 Assist::Unresolved { .. } => unreachable!(),
             })
             .collect::<Vec<_>>();
-        a.sort_by(|a, b| match (a.1.target, b.1.target) {
+        a.sort_by(|a, b| match (a.get_first_action().target, b.get_first_action().target) {
             (Some(a), Some(b)) => a.len().cmp(&b.len()),
             (Some(_), None) => Ordering::Less,
             (None, Some(_)) => Ordering::Greater,
@@ -177,7 +191,7 @@ mod helpers {
             AssistCtx::with_ctx(&db, frange, true, assist).expect("code action is not applicable");
         let action = match assist {
             Assist::Unresolved { .. } => unreachable!(),
-            Assist::Resolved { action, .. } => action,
+            Assist::Resolved { assist } => assist.get_first_action(),
         };
 
         let actual = action.edit.apply(&before);
@@ -204,7 +218,7 @@ mod helpers {
             AssistCtx::with_ctx(&db, frange, true, assist).expect("code action is not applicable");
         let action = match assist {
             Assist::Unresolved { .. } => unreachable!(),
-            Assist::Resolved { action, .. } => action,
+            Assist::Resolved { assist } => assist.get_first_action(),
         };
 
         let mut actual = action.edit.apply(&before);
@@ -227,7 +241,7 @@ mod helpers {
             AssistCtx::with_ctx(&db, frange, true, assist).expect("code action is not applicable");
         let action = match assist {
             Assist::Unresolved { .. } => unreachable!(),
-            Assist::Resolved { action, .. } => action,
+            Assist::Resolved { assist } => assist.get_first_action(),
         };
 
         let range = action.target.expect("expected target on action");
@@ -246,7 +260,7 @@ mod helpers {
             AssistCtx::with_ctx(&db, frange, true, assist).expect("code action is not applicable");
         let action = match assist {
             Assist::Unresolved { .. } => unreachable!(),
-            Assist::Resolved { action, .. } => action,
+            Assist::Resolved { assist } => assist.get_first_action(),
         };
 
         let range = action.target.expect("expected target on action");
@@ -296,10 +310,10 @@ mod tests {
         let mut assists = assists.iter();
 
         assert_eq!(
-            assists.next().expect("expected assist").0.label,
+            assists.next().expect("expected assist").label.label,
             "Change visibility to pub(crate)"
         );
-        assert_eq!(assists.next().expect("expected assist").0.label, "Add `#[derive]`");
+        assert_eq!(assists.next().expect("expected assist").label.label, "Add `#[derive]`");
     }
 
     #[test]
@@ -318,7 +332,7 @@ mod tests {
         let assists = super::assists(&db, frange);
         let mut assists = assists.iter();
 
-        assert_eq!(assists.next().expect("expected assist").0.label, "Extract into variable");
-        assert_eq!(assists.next().expect("expected assist").0.label, "Replace with match");
+        assert_eq!(assists.next().expect("expected assist").label.label, "Extract into variable");
+        assert_eq!(assists.next().expect("expected assist").label.label, "Replace with match");
     }
 }
-- 
cgit v1.2.3