[parser]: Skipping inner funcs / initial implemetation of storing scope analysis data from preparse…

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 501 matching lines @@
                          true),
       scanner_(info->unicode_cache()),
       reusable_preparser_(nullptr),
       original_scope_(nullptr),
       mode_(PARSE_EAGERLY),  // Lazy mode must be set explicitly.
       target_stack_(nullptr),
       compile_options_(info->compile_options()),
       cached_parse_data_(nullptr),
       total_preparse_skipped_(0),
       temp_zoned_(false),
-      log_(nullptr) {
+      log_(nullptr),
+      preparsed_scope_data_(info->preparsed_scope_data()) {
   // Even though we were passed ParseInfo, we should not store it in
   // Parser - this makes sure that Isolate is not accidentally accessed via
   // ParseInfo during background parsing.
   DCHECK(!info->script().is_null() || info->source_stream() != nullptr ||
          info->character_stream() != nullptr);
   // Determine if functions can be lazily compiled. This is necessary to
   // allow some of our builtin JS files to be lazily compiled. These
   // builtins cannot be handled lazily by the parser, since we have to know
   // if a function uses the special natives syntax, which is something the
   // parser records.
@@ skipping 2145 matching lines @@
           function_name, pos, kind, function_type, scope, &num_parameters,
           &function_length, &has_duplicate_parameters,
           &materialized_literal_count, &expected_property_count, CHECK_OK);
     }
 
     DCHECK(use_temp_zone || !is_lazy_top_level_function);
     if (use_temp_zone) {
       // If the preconditions are correct the function body should never be
       // accessed, but do this anyway for better behaviour if they're wrong.
       body = nullptr;
-      scope->AnalyzePartially(&previous_zone_ast_node_factory);
+      scope->AnalyzePartially(&previous_zone_ast_node_factory,
+                              preparsed_scope_data_);
     }
 
     DCHECK_IMPLIES(use_temp_zone, temp_zoned_);
     if (FLAG_trace_preparse) {
       PrintF("  [%s]: %i-%i %.*s\n",
              is_lazy_top_level_function
                  ? "Preparse no-resolution"
                  : (temp_zoned_ ? "Preparse resolution" : "Full parse"),
              scope->start_position(), scope->end_position(),
              function_name->byte_length(), function_name->raw_data());
@@ skipping 2336 matching lines @@
 
   return final_loop;
 }
 
 #undef CHECK_OK
 #undef CHECK_OK_VOID
 #undef CHECK_FAILED
 
 }  // namespace internal
 }  // namespace v8