This eliminates the subnode on RationalNode and replaces it with two
integer fields, which represent the ratio for the rational. It also
reduces those two integers if they both fit into 32 bits.
Importantly, this PR does not implement bignum reduction. That's something
I'd like to consider for the future, but it's simple enough for now to
leave them unreduced, which makes it more useful than it used to be.
https://github.com/ruby/prism/commit/86e06c7068
Resolves https://github.com/ruby/prism/pull/2803.
This PR adds error handling for missing `parser` gem in `Prism::Translation`.
The `parser` gem is a required runtime dependency when using `Prism::Translation::Parser`.
But it is not required for other uses of Prism. To avoid unnecessary dependencies,
it is not added as a `runtime_dependency` in the prism.gemspec. Instead, if the dependency is missing,
instructions are given to add it to Gemfile.
## Before
```console
$ bundle exec ruby -e 'require "prism"; require "prism/translation/parser33"'
/Users/koic/.rbenv/versions/3.3.1/lib/ruby/3.3.0/bundled_gems.rb:74:in `require': cannot load such file -- parser (LoadError)
from /Users/koic/.rbenv/versions/3.3.1/lib/ruby/3.3.0/bundled_gems.rb:74:in `block (2 levels) in replace_require'
from /Users/koic/src/github.com/ruby/prism/lib/prism/translation/parser.rb:3:in `<top (required)>'
from /Users/koic/.rbenv/versions/3.3.1/lib/ruby/3.3.0/bundled_gems.rb:74:in `require'
from /Users/koic/.rbenv/versions/3.3.1/lib/ruby/3.3.0/bundled_gems.rb:74:in `block (2 levels) in replace_require'
from /Users/koic/src/github.com/ruby/prism/lib/prism/translation/parser33.rb:6:in `<module:Translation>'
from /Users/koic/src/github.com/ruby/prism/lib/prism/translation/parser33.rb:4:in `<module:Prism>'
from /Users/koic/src/github.com/ruby/prism/lib/prism/translation/parser33.rb:3:in `<top (required)>'
from /Users/koic/.rbenv/versions/3.3.1/lib/ruby/3.3.0/bundled_gems.rb:74:in `require'
from /Users/koic/.rbenv/versions/3.3.1/lib/ruby/3.3.0/bundled_gems.rb:74:in `block (2 levels) in replace_require'
from -e:1:in `<main>'
```
## After
```console
$ bundle exec ruby -e 'require "prism"; require "prism/translation/parser33"'
Error: Unable to load parser. Add `gem "parser"` to your Gemfile.
```
https://github.com/ruby/prism/commit/4880aec22d
Having the @newline instance variable in every node adds up, and
since it is so rarely used, we only want to add it when necessary.
Moving this into an autoloaded file and moving the instance variable
out of the default initializers reduces allocated memory because the
nodes are now smaller and some fit into the compact list. On my
machine, I'm seeing about an 8% drop.
https://github.com/ruby/prism/commit/eea92c07d2
This has been requested for a long time, and I'm finally doing it
now. Unfortunately this is a breaking change for all of the APIs.
I've added in a Ruby method for `#child` that is deprecated so that
existing usage doesn't break, but for everyone else this is going
to be a bit of a pain.
https://github.com/ruby/prism/commit/9cbe74464e
Kevin Newton
Koichi ITO
Vinicius Stock
Earlopain