PreParser scope analysis: sloppy block funcs.

src/parsing/preparser.cc

 // Copyright 2011 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 <cmath>
 
 #include "src/allocation.h"
 #include "src/base/logging.h"
 #include "src/conversions-inl.h"
 #include "src/conversions.h"
@@ skipping 126 matching lines @@
           ast_value_factory()->arguments_string(), VAR);
       function_scope->DeclareVariableName(ast_value_factory()->this_string(),
                                           VAR);
     }
   }
 
   Expect(Token::LBRACE, CHECK_OK_VALUE(kPreParseSuccess));
   LazyParsingResult result = ParseStatementListAndLogFunction(
       &formals, has_duplicate_parameters, may_abort, ok);
 
+  if (is_sloppy(function_scope->language_mode())) {
+    function_scope->HoistSloppyBlockFunctions(nullptr);
+  }
+
   use_counts_ = nullptr;
   track_unresolved_variables_ = false;
 
   if (result == kLazyParsingAborted) {
     return kPreParseAbort;
   } else if (stack_overflow()) {
     return kPreParseStackOverflow;
   } else if (!*ok) {
     DCHECK(pending_error_handler_->has_pending_error());
   } else {
@@ skipping 68 matching lines @@
   CheckArityRestrictions(formals.arity, kind, formals.has_rest, start_position,
                          formals_end_position, CHECK_OK);
 
   Expect(Token::LBRACE, CHECK_OK);
   ParseStatementList(body, Token::RBRACE, CHECK_OK);
   Expect(Token::RBRACE, CHECK_OK);
 
   // Parsing the body may change the language mode in our scope.
   language_mode = function_scope->language_mode();
 
+  if (is_sloppy(language_mode)) {
+    function_scope->HoistSloppyBlockFunctions(nullptr);
+  }
+
   // Validate name and parameter names. We can do this only after parsing the
   // function, since the function can declare itself strict.
   CheckFunctionName(language_mode, function_name, function_name_validity,
                     function_name_location, CHECK_OK);
   const bool allow_duplicate_parameters =
       is_sloppy(language_mode) && formals.is_simple && !IsConciseMethod(kind);
   ValidateFormalParameters(language_mode, allow_duplicate_parameters, CHECK_OK);
 
   int end_position = scanner()->location().end_pos;
   if (is_strict(language_mode)) {
@@ skipping 63 matching lines @@
     }
   }
 }
 
 #undef CHECK_OK
 #undef CHECK_OK_CUSTOM
 
 
 }  // namespace internal
 }  // namespace v8