Method: CodeWeb::CodeParser#traverse

Defined in:
lib/code_web/code_parser.rb

#traverse(ast, has_yield = false) ⇒ Object 



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# File 'lib/code_web/code_parser.rb', line 25

def traverse(ast, has_yield=false)
  puts "#{spaces}||#{collapse_ast(ast,1)}||" if verbose?
  puts src if ast.nil?
  case ast.node_type
  #dstr = define string ("abc#{here}"),
  #evstr evaluate string (#{HERE})
  #attrasgn = attribute assignment
  when :block, :if, :ensure, :rescue, :case, :when, :begin,
       :while, :until, :defined, :resbody, :match2, :match3, :dot2, :dot3,
       :dstr, :evstr, :dsym, :dregx, :hash, :array, :return, :and, :or,
       :next, :to_ary, :splat, :block_pass, :until, :yield,
       /asgn/, :ivar, :arglist, :args, :kwarg, :kwargs, :kwsplat, :zsuper, :not, #statements[]
       :super, :xstr, :for, :until, :dxstr, 
  #these end up being no-ops:
       :lit, :lvar, :const, :str, :nil, :gvar, :back_ref,
       :true, :false, :colon2, :colon3, :next, :alias,
       :nth_ref, :sclass, :cvdecl, :break, :retry, :undef,
  #random
       :svalue, :cvar
    traverse_nodes(ast, 1..-1)
  when :self
    traverse_nodes(ast, 1..-1)
  when :module, #name, statements[]
       :class #name, parent, statements[]
    in_context ast[1], true, true do
      traverse_nodes(ast, 2..-1)
    end
  when :cdecl, #name, statements[]
       :defn #name, args[], call[]
    in_context ast[1], true do
      traverse_nodes(ast, 2..-1)
    end
  when :defs #self[], name, args[], call[] # static method
    in_context ast[2], :static do
      traverse_nodes(ast, 2..-1)
    end
  when :iter #call[], yield_args[], yield_{block|call}[]
    traverse(ast[1], :has_yield)
    in_context 'yield', true do
      traverse_nodes(ast, 2..-1)
    end
  when :call # object, statement? || const symbol, args
    handle_method_call(ast, has_yield)
    traverse_nodes(ast, 1..-1)
  else
    STDERR.puts "#{src}\n  unknown node: #{ast.node_type} #{collapse_ast(ast,1)}"
    if exit_on_error
      if defined?(Pry)
        binding.pry
      elsif defined?(Byebug)
        byebug
      end
      raise "error"
    end
    traverse_nodes(ast, 1..-1)
  end
end