267b067bad
I'm trying to remove annotations and make behavior more consistent. For @generatePrint, there are two options: either generate printers for every extern class, or never generate printers for extern classes. This change implements the option of always generating printers. Classes that require custom printing can easily hide the generated printer by using DECL_PRINTER. This causes the generated file gen/torque-generated/objects-printer.cc to grow to 1600 lines, including many functions that are never used, but I think the consistency benefit outweighs a little more compilation time on one file. This change also removes custom printers in cases where the generated printer includes all of the same content. If folks would prefer the option to never generate printers, I'm open to doing that instead. I like the notion that generating more code could reduce the friction of adding new classes and thereby encourage people to define precise types rather than using FixedArrays, but the current implementation of generated printers is limited, and many printers have been customized to show the data that matters the most. Unlike verifiers and body descriptors, there are no correctness or safety concerns with hand-written printers. Some bugs showed up once we start generating printers for everything, and this change fixes them: - Printers incorrectly included ungettable fields like padding - Printers called getters which might be hidden by hand-written classes - The generated getter for Map::instance_type used ReadField<InstanceType>, which is not an arithmetic type since it's an enum One more tiny drive-by fix: added a missing newline in the printers for JSMap and JSSet. Bug: v8:7793 Change-Id: Ib9e9575fbcb57879935ff18bf4db49fe276d2966 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3172190 Reviewed-by: Nico Hartmann <nicohartmann@chromium.org> Reviewed-by: Toon Verwaest <verwaest@chromium.org> Commit-Queue: Seth Brenith <seth.brenith@microsoft.com> Cr-Commit-Position: refs/heads/main@{#77152} |
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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://v8.dev/docs
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 at v8.dev/docs/contribute.