CODEWITHSUNDEEP
ruby
user3096803
user3096803

Reputation:

Where is the source code for Ruby's operators?

I'm looking for evidence of the unary &'s to_proc behaviour in Ruby source code so that I can write about it. Where are the implementations for the native behaviours of these ruby operators kept? I looked in parse.y and have no idea how to search for this as there are thousands of matches for "&". What's the best way to go about finding ruby implementation details for this? Is there documentation for the ruby source code itself?

Upvotes: 0

Views: 178

Answers (1)

yossarian
yossarian

Reputation: 1677

The Ruby language itself is documented on ruby-lang.org. In particular, there are pages for Ruby's grammar, syntax, and method calling semantics. For the block-ifying behavior of the & operator, you might find "Proc to Block Conversion" useful.

I'm not sure where the block-ifying behavior of & is implemented, but it's relatively straightforward:

  1. If the argument to & is a Proc, then blockify it
  2. Otherwise, call to_proc on it and blockify that result (failing if to_proc isn't defined or fails)

Upvotes: 1

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