Which Ruby analyzer do you suggest analyzing Ruby sources?

Question

The analyzer I'm looking for should:

• be Ruby friendly
• be elegant in design rules,
• Create user-friendly syntax errors
• user documentation should be available in a volume greater than the example of a calculator,
• UPD : allows you to omit optional spaces that spell the grammar.

Quick analysis is not an important feature.

I tried Citrus, but the lack of documentation and the need to specify every space in the rules just pushed me away from it.

Answer 1

• Treetop
• Ragel

Or, if you want to parse Ruby yourself:

parse_tree and ruby_parser

Edit:

Ruby , tinyrb.