show statement name in command line mode

client/src/components/Level.tsx

@@ -188,8 +188,14 @@ function PlayableLevel({worldId, levelId}) {
           }
         </div>
         <div className="exercise">
-          {/* <h4>Aufgabe:</h4> */}
-          <Markdown>{level?.data?.descrText}</Markdown>
+          <Markdown>
+            {(level?.data?.statementName ?
+              `**Theorem** \`${level?.data?.statementName}\`: `
+              :
+              level?.data?.descrText && "**Exercise**: ")
+              + `${level?.data?.descrText}`
+            }
+          </Markdown>
           <div className={`statement ${commandLineMode ? 'hidden' : ''}`}><code>{level?.data?.descrFormat}</code></div>
           <div ref={codeviewRef} className={`codeview ${commandLineMode ? 'hidden' : ''}`}></div>
         </div>

client/src/state/api.ts

@@ -29,6 +29,7 @@ export interface LevelInfo {
   descrText: null|string,
   descrFormat: null|string,
   lemmaTab: null|string,
+  statementName: null|string
 }
 
 interface Doc {

server/leanserver/GameServer/Commands.lean

@@ -306,7 +306,7 @@ elab "Statement" statementName:ident ? descr:str ? sig:declSig val:declVal : com
     | some name => name.getId
     descrFormat := match statementName with
     | none => "example " ++ (toString <| reprint sig.raw) ++ " := by"
-    | some name => (Format.join ["lemma ", reprint name.raw, " ", reprint sig.raw, " := by"]).pretty 10  -- "lemma "  ++ (toString <| reprint name.raw) ++ " " ++ (Format.pretty (reprint sig.raw) 40) ++ " := by"
+    | some name => (Format.join ["theorem ", reprint name.raw, " ", reprint sig.raw, " := by"]).pretty 10  -- "lemma "  ++ (toString <| reprint name.raw) ++ " " ++ (Format.pretty (reprint sig.raw) 40) ++ " := by"
     hints := hints
   } -- Format.pretty <| format thmStatement.raw }
 

server/leanserver/GameServer/Game.lean

@@ -47,6 +47,7 @@ structure LevelInfo where
   descrText : String := ""
   descrFormat : String := ""
   lemmaTab : Option String
+  statementName : Option String
 deriving ToJson, FromJson
 
 structure LoadLevelParams where
@@ -117,6 +118,8 @@ partial def handleServerEvent (ev : ServerEvent) : GameServerM Bool := do
           c.hOut.writeLspResponseError ⟨id, .invalidParams, s!"Level not found: world {p.world}, level {p.level}", none⟩
           return true
 
+      let env ← getEnv
+
       let levelInfo : LevelInfo :=
           { index := lvl.index,
             title := lvl.title,
@@ -127,7 +130,16 @@ partial def handleServerEvent (ev : ServerEvent) : GameServerM Bool := do
             descrFormat := lvl.descrFormat --toExpr <| format (lvl.goal.raw) --toString <| Syntax.formatStx (lvl.goal.raw) --Syntax.formatStx (lvl.goal.raw) , -- TODO
             introduction := lvl.introduction
             conclusion := lvl.conclusion
-            lemmaTab := lvl.lemmaTab }
+            lemmaTab := lvl.lemmaTab
+            statementName := match lvl.statementName with
+              | .anonymous => none
+              | name => match (inventoryDocExt.getState env).find?
+                  (fun x => x.name == name && x.type == .Lemma) with
+                | some n => n.displayName
+                | none => name.toString
+                -- Note: we could call `.find!` because we check in `Statement` that the
+                -- lemma doc must exist.
+            }
       c.hOut.writeLspResponse ⟨id, ToJson.toJson levelInfo⟩
       return true
     | Message.request id "loadDoc" params =>