refactor: Use library goalStartExpr function

Pantograph.lean

@@ -93,11 +93,7 @@ def execute (command: Protocol.Command): MainM Lean.Json := do
     let state ← get
     let env ← Lean.MonadEnv.getEnv
     let expr?: Except _ GoalState ← runTermElabM (match args.expr, args.copyFrom with
-      | .some expr, .none => do
+      | .some expr, .none => goalStartExpr expr
-        let expr ← match ← exprParse expr with
-          | .error e => return .error e
-          | .ok expr => pure $ expr
-        return .ok $ ← GoalState.create expr
       | .none, .some copyFrom =>
         (match env.find? <| copyFrom.toName with
         | .none => return .error <| errorIndex s!"Symbol not found: {copyFrom}"

Pantograph/Library.lean

@@ -152,7 +152,7 @@ def exprEcho (expr: String) (expectedType?: Option String := .none) (options: @&
 @[export pantograph_goal_start_expr_m]
 def goalStartExpr (expr: String): Lean.CoreM (Protocol.CR GoalState) :=
   let termElabM: Lean.Elab.TermElabM _ := do
-    let expr ← match ← exprParse expr with
+    let expr ← match ← typeParse expr with
       | .error e => return .error e
       | .ok expr => pure $ expr
     return .ok $ ← GoalState.create expr

Test/Integration.lean

@@ -73,22 +73,22 @@ def test_malformed_command : IO LSpec.TestSeq :=
   ]
 def test_tactic : IO LSpec.TestSeq :=
   let goal1: Protocol.Goal := {
-    name := "_uniq.10",
+    name := "_uniq.11",
     target := { pp? := .some "∀ (q : Prop), x ∨ q → q ∨ x" },
-    vars := #[{ name := "_uniq.9", userName := "x", isInaccessible? := .some false, type? := .some { pp? := .some "Prop" }}],
+    vars := #[{ name := "_uniq.10", userName := "x", isInaccessible? := .some false, type? := .some { pp? := .some "Prop" }}],
   }
   let goal2: Protocol.Goal := {
-    name := "_uniq.13",
+    name := "_uniq.14",
     target := { pp? := .some "x ∨ y → y ∨ x" },
     vars := #[
-      { name := "_uniq.9", userName := "x", isInaccessible? := .some false, type? := .some { pp? := .some "Prop" }},
+      { name := "_uniq.10", userName := "x", isInaccessible? := .some false, type? := .some { pp? := .some "Prop" }},
-      { name := "_uniq.12", userName := "y", isInaccessible? := .some false, type? := .some { pp? := .some "Prop" }}
+      { name := "_uniq.13", userName := "y", isInaccessible? := .some false, type? := .some { pp? := .some "Prop" }}
     ],
   }
   subroutine_runner [
     subroutine_step "goal.start"
       [("expr", .str "∀ (p q: Prop), p ∨ q → q ∨ p")]
-     (Lean.toJson ({stateId := 0, root := "_uniq.8"}:
+     (Lean.toJson ({stateId := 0, root := "_uniq.9"}:
       Protocol.GoalStartResult)),
     subroutine_step "goal.tactic"
       [("stateId", .num 0), ("goalId", .num 0), ("tactic", .str "intro x")]
@@ -100,7 +100,7 @@ def test_tactic : IO LSpec.TestSeq :=
     subroutine_step "goal.print"
       [("stateId", .num 1)]
      (Lean.toJson ({
-       parent? := .some { pp? := .some "fun x => ?m.11 x" },
+       parent? := .some { pp? := .some "fun x => ?m.12 x" },
      }:
       Protocol.GoalPrintResult)),
     subroutine_step "goal.tactic"