[parser] disallow language mode directive in body of function with non-simple parameters

TC39 agreed to disallow "use strict" directives in function body when
non-simple parameter lists are used.

This is a continuation of caitp's CL https://codereview.chromium.org/1281163002/
with some refactorings removed for now.

Still TODO: there is a lot of duplication between the is_simple field of
FormalParametersBase and the NonSimpleParameter property ExpressionClassifier
keeps track of. It should be possible to remove the former with a minor
refactoring of arrow function parsing. This will be attempted in a follow-up CL.

BUG=
LOG=N

Review URL: https://codereview.chromium.org/1300103005

Cr-Commit-Position: refs/heads/master@{#30388}
17 files changed
tree: ad45444d18fc8ba32860f0e202c5e7279b7bafe9
  1. benchmarks/
  2. build/
  3. include/
  4. infra/
  5. samples/
  6. src/
  7. test/
  8. testing/
  9. third_party/
  10. tools/
  11. .clang-format
  12. .gitignore
  13. .ycm_extra_conf.py
  14. AUTHORS
  15. BUILD.gn
  16. ChangeLog
  17. codereview.settings
  18. DEPS
  19. LICENSE
  20. LICENSE.strongtalk
  21. LICENSE.v8
  22. LICENSE.valgrind
  23. Makefile
  24. Makefile.android
  25. Makefile.nacl
  26. OWNERS
  27. PRESUBMIT.py
  28. README.md
  29. WATCHLISTS
README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://code.google.com/p/v8/

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*