How would I recompile Ripper's AST back to Ruby code?
Ripper is the the parsing library that ships with Ruby 1.9. It transforms Ruby code into an AST, like so:
p开发者_开发问答p Ripper.sexp("def foo; yield :a; return 1 end")
#=>
[:program,
[[:def,
[:@ident, "foo", [1, 4]],
[:params, nil, nil, nil, nil, nil],
[:bodystmt,
[[:yield,
[:args_add_block,
[[:symbol_literal, [:symbol, [:@ident, "a", [1, 16]]]]],
false]],
[:return, [:args_add_block, [[:@int, "1", [1, 26]]], false]]],
nil,
nil,
nil]]]]
Is there a library to take this AST and transform it back into Ruby code?
ruby_parser and ruby2ruby used to do this, but I would like to use Ripper as my parser. (Ruby 1.9 may even ship with such a library, but I'm struggling to find documentation even on Ripper itself)
See "Sorcerer". This works well but I found a bug when parsing methods. If you add src.emit("; ")
below the line 301 of the file "lib/sorcerer/resource.rb", this will be fixed. But you may find more if you decide to use this. Good luck.
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