[parser] Load outer ScopeInfo from SharedFunctionInfo.

src/parsing/parse-info.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/parsing/parse-info.h"
 
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/ast.h"
 
 namespace v8 {
@@ skipping 14 matching lines @@
       compiler_hints_(0),
       start_position_(0),
       end_position_(0),
       isolate_(nullptr),
       cached_data_(nullptr),
       ast_value_factory_(nullptr),
       function_name_(nullptr),
       literal_(nullptr) {}
 
 ParseInfo::ParseInfo(Zone* zone, Handle<JSFunction> function)
-    : ParseInfo(zone, Handle<SharedFunctionInfo>(function->shared())) {
-  if (!function->context()->IsNativeContext()) {
-    set_outer_scope_info(handle(function->context()->scope_info()));
-  }
-}
+    : ParseInfo(zone, Handle<SharedFunctionInfo>(function->shared())) {}
 
 ParseInfo::ParseInfo(Zone* zone, Handle<SharedFunctionInfo> shared)
     : ParseInfo(zone) {
   isolate_ = shared->GetIsolate();
 
   set_lazy();
   set_hash_seed(isolate_->heap()->HashSeed());
   set_is_named_expression(shared->is_named_expression());
   set_calls_eval(shared->scope_info()->CallsEval());
   set_compiler_hints(shared->compiler_hints());
   set_start_position(shared->start_position());
   set_end_position(shared->end_position());
   set_stack_limit(isolate_->stack_guard()->real_climit());
   set_unicode_cache(isolate_->unicode_cache());
   set_language_mode(shared->language_mode());
   set_shared_info(shared);
 
   Handle<Script> script(Script::cast(shared->script()));
   set_script(script);
   if (!script.is_null() && script->type() == Script::TYPE_NATIVE) {
     set_native();
   }
+
+  Handle<HeapObject> scope_info(shared->outer_scope_info());
+  if (!scope_info->IsTheHole(isolate()) &&
+      Handle<ScopeInfo>::cast(scope_info)->length() > 0) {
+    set_outer_scope_info(Handle<ScopeInfo>::cast(scope_info));
+  }
 }
 
 ParseInfo::ParseInfo(Zone* zone, Handle<Script> script) : ParseInfo(zone) {
   isolate_ = script->GetIsolate();
 
   set_hash_seed(isolate_->heap()->HashSeed());
   set_stack_limit(isolate_->stack_guard()->real_climit());
   set_unicode_cache(isolate_->unicode_cache());
   set_script(script);
 
@@ skipping 30 matching lines @@
 }
 
 #ifdef DEBUG
 bool ParseInfo::script_is_native() const {
   return script_->type() == Script::TYPE_NATIVE;
 }
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8