[ruby-core:117714] [Ruby master Bug#20457] Final `return` is eliminated from the AST
From:
"tenderlovemaking (Aaron Patterson) via ruby-core" <ruby-core@...>
Date:
2024-04-25 20:02:33 UTC
List:
ruby-core #117714
Issue #20457 has been reported by tenderlovemaking (Aaron Patterson). ---------------------------------------- Bug #20457: Final `return` is eliminated from the AST https://bugs.ruby-lang.org/issues/20457 * Author: tenderlovemaking (Aaron Patterson) * Status: Open * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- Given the following code: ```ruby def foo a = 1 return a end ``` If you parse this with RubyVM::AbstractSyntaxTree, the AST will be missing the `return` node. Of course the `return` node isn't necessary for compilation, but would be required for building an LSP for example. Here's a full program to demonstrate: ```ruby ast = RubyVM::AbstractSyntaxTree.parse DATA.read pp ast # Output is like this: # # (SCOPE@1:0-4:3 # tbl: [] # args: nil # body: # (DEFN@1:0-4:3 # mid: :foo # body: # (SCOPE@1:0-4:3 # tbl: [:a] # args: (ARGS@1:7-1:7 pre_num: 0 pre_init: nil opt: nil first_post: nil post_num: 0 post_init: nil rest: nil kw: nil kwrest: nil block: nil) # body: (BLOCK@2:2-3:10 (LASGN@2:2-2:7 :a (INTEGER@2:6-2:7 1)) (LVAR@3:9-3:10 :a))))) __END__ def foo a = 1 return a end ``` Btw, I'm happy to write failing tests for this type of stuff I'm just not sure where to put it! :) -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- [email protected] To unsubscribe send an email to [email protected] ruby-core info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-core.ml.ruby-lang.org/