Reland: [Compiler] Enable handles created during parsing and scope analysis to be deferred.

src/parsing/parser.cc

 // Copyright 2012 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/parser.h"
 
 #include <memory>
 
 #include "src/api.h"
 #include "src/ast/ast-expression-rewriter.h"
@@ skipping 3343 matching lines @@
   Handle<String> source_url = scanner_.SourceUrl(isolate);
   if (!source_url.is_null()) {
     script->set_source_url(*source_url);
   }
   Handle<String> source_mapping_url = scanner_.SourceMappingUrl(isolate);
   if (!source_mapping_url.is_null()) {
     script->set_source_mapping_url(*source_mapping_url);
   }
 }
 
+void Parser::ReportErrors(Isolate* isolate, Handle<Script> script) {
+  if (stack_overflow()) {
+    isolate->StackOverflow();
+  } else {
+    DCHECK(pending_error_handler_.has_pending_error());
+    // Internalize ast values for throwing the pending error.
+    ast_value_factory()->Internalize(isolate);
+    pending_error_handler_.ThrowPendingError(isolate, script);
+  }
+}
 
-void Parser::Internalize(Isolate* isolate, Handle<Script> script, bool error) {
-  // Internalize strings and values.
-  ast_value_factory()->Internalize(isolate);
-
-  // Error processing.
-  if (error) {
-    if (stack_overflow()) {
-      isolate->StackOverflow();
-    } else {
-      DCHECK(pending_error_handler_.has_pending_error());
-      pending_error_handler_.ThrowPendingError(isolate, script);
-    }
-  }
-
+void Parser::UpdateStatistics(Isolate* isolate, Handle<Script> script) {
   // Move statistics to Isolate.
   for (int feature = 0; feature < v8::Isolate::kUseCounterFeatureCount;
        ++feature) {
     if (use_counts_[feature] > 0) {
       isolate->CountUsage(v8::Isolate::UseCounterFeature(feature));
     }
   }
   if (scanner_.FoundHtmlComment()) {
     isolate->CountUsage(v8::Isolate::kHtmlComment);
     if (script->line_offset() == 0 && script->column_offset() == 0) {
@@ skipping 1637 matching lines @@
 
   return final_loop;
 }
 
 #undef CHECK_OK
 #undef CHECK_OK_VOID
 #undef CHECK_FAILED
 
 }  // namespace internal
 }  // namespace v8