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bmeurer a3d6f6cce3 [builtins] Unify the String constructor. 
Implement the String constructor completely as native builtin,
avoiding the need to do gymnastics in JavaScript builtin to
properly detect the no argument case (which is different from
the undefined argument case) and also allowing to just
tailcall through to ToString or SymbolDescriptiveString for
the common case. Also the JavaScript builtin was misleading
since the case for construct call was unused, but could be
triggered in a wrong way once we support tail calls from
constructor functions.

This refactoring allows us to properly implement subclassing
for String builtins, once we have the correct initial_map on
derived classes (it's merely a matter of using NewTarget
instead of the target register now).

This introduces a new %SymbolDescriptiveString runtime
entry, which is also used by Symbol.toString() now.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1344893002

Cr-Commit-Position: refs/heads/master@{#30759}
2015-09-16 10:44:47 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build Port cfi blacklist from chromium. 2015-09-15 08:45:51 +00:00
include [presubmit] Enable build/c++11 linter checking. 2015-09-07 14:24:18 +00:00
infra Use committer list from chrome-infra-auth group project-v8-committers 2015-08-27 16:10:22 +00:00
samples Rework startup-data-util. 2015-08-14 12:11:46 +00:00
src [builtins] Unify the String constructor. 2015-09-16 10:44:47 +00:00
test Vector ICs: Hook up vectors in platform builtins to their SharedFunctionInfos. 2015-09-16 10:09:00 +00:00
testing Converted V8 CQ config to proto-format 2015-05-28 15:02:53 +00:00
third_party/binutils Update binutils version. 2015-08-07 08:09:49 +00:00
tools [heap] Move slots buffer into a separate file. 2015-09-15 12:35:20 +00:00
.clang-format Change clang-format config to allow for two empty lines between functions 2013-12-03 10:39:21 +00:00
.gitignore Adding CHECKED_OUT_VERSION to .gitignore. 2015-07-24 06:17:04 +00:00
.ycm_extra_conf.py [ycm] The YouCompleteMe configuration is not VIM specific. 2015-02-12 07:21:13 +00:00
AUTHORS MIPS:[turbofan] Improve boolean materialization compares. 2015-09-06 12:01:45 +00:00
BUILD.gn [heap] Move slots buffer into a separate file. 2015-09-15 12:35:20 +00:00
ChangeLog Update change log to match roll branch. 2015-05-18 15:03:50 +00:00
codereview.settings Use v8-reviews@ for review mail, so v8-dev@ is free for dev discussions 2015-09-09 08:14:11 +00:00
DEPS Update V8 DEPS. 2015-09-15 03:26:05 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +00:00
LICENSE.strongtalk
LICENSE.v8
LICENSE.valgrind
Makefile Vector ICs: gyp flag to run with vector-stores on. 2015-09-11 10:00:17 +00:00
Makefile.android Reland [android] Migrate more configs to gyp. 2015-06-26 12:04:09 +00:00
Makefile.nacl Use the pnacl-clang toolchain for (P)NaCL builds 2014-10-06 08:10:50 +00:00
OWNERS Update OWNERS file. 2015-07-16 11:37:51 +00:00
PRESUBMIT.py Remove builtin/runtime name clash presubmit check. 2015-08-27 11:14:09 +00:00
README.md [Docs] Add information on how to contribute to the README 2015-09-15 07:53:13 +00:00
WATCHLISTS Debugger: move implementation to a separate folder. 2015-07-31 11:08:15 +00:00

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/*

Contributing

Please follow the instructions mentioned on the V8 wiki.