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require 'coderay'
c_code = "if (*p == '{') nest++;"
puts 'C Code: ' + c_code
puts
c_scanner = CodeRay::Scanners[:c].new c_code
puts '> print only operators:'
for text, kind in c_scanner
print text if kind == :operator
end
puts
puts '-' * 30
puts
ruby_code = %q!ruby_code(:can, BE, %r[q[ui]te #{ /comple/x },] => $-s, &?\xee)!
puts 'Ruby Code: ' + ruby_code
puts
ruby_scanner = CodeRay::Scanners[:ruby].new ruby_code
puts '> has a string?'
puts ruby_scanner.
any? { |text, kind| kind == :string }
puts
puts '> number of regexps?'
puts ruby_scanner.
select { |token| token == [:open, :regexp] }.size
puts
puts '> has a string?'
puts ruby_scanner.
reject { |text, kind| not text.is_a? String }.
map { |text, kind| %("#{text}" (#{kind})) }.join(', ')
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