mirror of
https://github.com/ruby/ruby.git
synced 2026-01-27 12:34:21 +00:00
ea7ceff82c
Previously, proc calls such as:
```ruby
proc{|| }.(**empty_hash)
proc{|b: 1| }.(**r2k_array_with_empty_hash)
```
both allocated hashes unnecessarily, due to two separate code paths.
The first call goes through CALLER_SETUP_ARG/vm_caller_setup_keyword_hash,
and is simple to fix by not duping an empty keyword hash that will be
dropped.
The second case is more involved, in setup_parameters_complex, but is
fixed the exact same way as when the ruby2_keywords hash is not empty,
by flattening the rest array to the VM stack, ignoring the last
element (the empty keyword splat). Add a flatten_rest_array static
function to handle this case.
Update test_allocation.rb to automatically convert the method call
allocation tests to proc allocation tests, at least for the calls
that can be converted. With the code changes, all proc call
allocation tests pass, showing that proc calls and method calls
now allocate the same number of objects.
I've audited the allocation tests, and I believe that all of the low
hanging fruit has been collected. All remaining allocations are
either caller side:
* Positional splat + post argument
* Multiple positional splats
* Literal keywords + keyword splat
* Multiple keyword splats
Or callee side:
* Positional splat parameter
* Keyword splat parameter
* Keyword to positional argument conversion for methods that don't accept keywords
* ruby2_keywords method called with keywords
Reapplies abc04e898b627ab37fa9dd5e330f239768778d8b, which was reverted at
d56470a27c5a8a2e7aee7a76cea445c2d29c0c59, with the addition of a bug fix and
test.
Fixes [Bug #20679]
What is Ruby?
Ruby is an interpreted object-oriented programming language often used for web development. It also offers many scripting features to process plain text and serialized files, or manage system tasks. It is simple, straightforward, and extensible.
Features of Ruby
- Simple Syntax
- Normal Object-oriented Features (e.g. class, method calls)
- Advanced Object-oriented Features (e.g. mix-in, singleton-method)
- Operator Overloading
- Exception Handling
- Iterators and Closures
- Garbage Collection
- Dynamic Loading of Object Files (on some architectures)
- Highly Portable (works on many Unix-like/POSIX compatible platforms as well as Windows, macOS, etc.) cf. https://docs.ruby-lang.org/en/master/maintainers_md.html#label-Platform+Maintainers
How to get Ruby
For a complete list of ways to install Ruby, including using third-party tools like rvm, see:
https://www.ruby-lang.org/en/downloads/
You can download release packages and the snapshot of the repository. If you want to download whole versions of Ruby, please visit https://www.ruby-lang.org/en/downloads/releases/.
Download with Git
The mirror of the Ruby source tree can be checked out with the following command:
$ git clone https://github.com/ruby/ruby.git
There are some other branches under development. Try the following command to see the list of branches:
$ git ls-remote https://github.com/ruby/ruby.git
You may also want to use https://git.ruby-lang.org/ruby.git (actual master of Ruby source) if you are a committer.
How to build
See Building Ruby
Ruby home page
Documentation
Mailing list
There is a mailing list to discuss Ruby. To subscribe to this list, please send the following phrase:
join
in the mail subject (not body) to the address ruby-talk-request@ml.ruby-lang.org.
Copying
See the file COPYING.
Feedback
Questions about the Ruby language can be asked on the Ruby-Talk mailing list or on websites like https://stackoverflow.com.
Bugs should be reported at https://bugs.ruby-lang.org. Read "Reporting Issues" for more information.
Contributing
See "Contributing to Ruby", which includes setup and build instructions.
The Author
Ruby was originally designed and developed by Yukihiro Matsumoto (Matz) in 1995.