[IDE] A few minor changes to set LeaveClosureBodiesUnchecked to false in more places

lib/IDE/CursorInfo.cpp

@@ -34,6 +34,9 @@ namespace {
 // MARK: - Utilities
 
 void typeCheckDeclAndParentClosures(ValueDecl *VD) {
+  if (!VD) {
+    return;
+  }
   // We need to type check any parent closures because their types are
   // encoded in the USR of ParentContexts in the cursor info response.
   auto DC = VD->getDeclContext();

lib/Sema/TypeCheckCodeCompletion.cpp

@@ -633,23 +633,6 @@ bool TypeChecker::typeCheckForCodeCompletion(
     if (solutions.empty())
       return CompletionResult::Fallback;
 
-    // If code completion expression resides inside of multi-statement
-    // closure body it could either be type-checked together with the context
-    // or not, it's impossible to say without checking.
-    if (contextAnalyzer.locatedInMultiStmtClosure()) {
-      if (!hasTypeForCompletion(solutions.front(), contextAnalyzer)) {
-        // At this point we know the code completion node wasn't checked with
-        // the closure's surrounding context, so can defer to regular
-        // type-checking for the current call to typeCheckExpression. If that
-        // succeeds we will get a second call to typeCheckExpression for the
-        // body of the closure later and can gather completions then. If it
-        // doesn't we rely on the fallback typechecking in the subclasses of
-        // TypeCheckCompletionCallback that considers in isolation a
-        // sub-expression of the closure that contains the completion location.
-        return CompletionResult::NotApplicable;
-      }
-    }
-
     // FIXME: instead of filtering, expose the score and viability to clients.
     // Remove solutions that skipped over/ignored the code completion point
     // or that require fixes and have a score that is worse than the best.

lib/Sema/TypeCheckStmt.cpp

@@ -2171,7 +2171,7 @@ bool TypeCheckASTNodeAtLocRequest::evaluate(
         if (auto Init = PBD->getInit(i)) {
           if (!PBD->isInitializerChecked(i)) {
             typeCheckPatternBinding(PBD, i,
-                                    /*LeaveClosureBodyUnchecked=*/true);
+                                    /*LeaveClosureBodyUnchecked=*/false);
             // Retrieve the accessor's body to trigger RecontextualizeClosures
             // This is important to get the correct USR of variables defined
             // in closures initializing lazy variables.
@@ -2393,8 +2393,6 @@ bool TypeCheckASTNodeAtLocRequest::evaluate(
     }
   }
 
-  bool LeaveBodyUnchecked = !ctx.CompletionCallback;
-
   // The enclosing closure might be a single expression closure or a function
   // builder closure. In such cases, the body elements are type checked with
   // the closure itself. So we need to try type checking the enclosing closure
@@ -2418,17 +2416,13 @@ bool TypeCheckASTNodeAtLocRequest::evaluate(
       auto ActorIsolation = determineClosureActorIsolation(
           CE, __Expr_getType, __AbstractClosureExpr_getActorIsolation);
       CE->setActorIsolation(ActorIsolation);
-      if (!LeaveBodyUnchecked) {
-        // Type checking the parent closure also type checked this node.
-        // Nothing to do anymore.
-        return false;
-      }
-      if (CE->getBodyState() != ClosureExpr::BodyState::ReadyForTypeChecking)
-        return false;
+      // Type checking the parent closure also type checked this node.
+      // Nothing to do anymore.
+      return false;
     }
   }
 
-  TypeChecker::typeCheckASTNode(finder.getRef(), DC, LeaveBodyUnchecked);
+  TypeChecker::typeCheckASTNode(finder.getRef(), DC, /*LeaveBodyUnchecked=*/false);
   return false;
 }
 

test/IDE/complete_call_arg.swift

@@ -469,7 +469,7 @@ func curry<T1, T2, R>(_ f: @escaping (T1, T2) -> R) -> (T1) -> (T2) -> R {
   // NESTED_CLOSURE: Begin completions
   // FIXME: Should be '/TypeRelation[Invalid]: t2[#T2#]'
   // NESTED_CLOSURE: Decl[LocalVar]/Local:               t2; name=t2
-  // NESTED_CLOSURE: Decl[LocalVar]/Local:               t1[#T1#]; name=t1
+  // NESTED_CLOSURE: Decl[LocalVar]/Local:               t1; name=t1
 }
 
 func trailingClosureLocal(x: Int, fn: (Int) -> Void) {

test/SourceKit/CursorInfo/cursor_in_closure.swift

@@ -0,0 +1,13 @@
+struct MyStruct {
+  var identifier: String
+}
+
+func takeClosure(_ x: () -> Void) {}
+
+func test() {
+  takeClosure {
+    let foo = MyStruct()
+    // RUN: %sourcekitd-test -req=cursor -pos=%(line + 1):5 %s -- %s
+    foo.identifier = "\(item.category)#\(item.name)"
+  }
+}