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ParseTreeArray

Constants

R2R

Public Class Methods

translate(*args) click to toggle source
# File lib/merb-action-args/mri_args.rb, line 7
def self.translate(*args)
  sexp = ParseTree.translate(*args)
  # ParseTree.translate returns [nil] if called on an inherited method, so walk
  # up the inheritance chain to find the class that the method was defined in
  unless sexp.first
    klass = args.first.ancestors.detect do |klass| 
      klass.public_instance_methods(false).include?(args.last.to_s)
    end
    sexp = ParseTree.translate(klass, args.last) if klass
  end
  sexp = Unifier.new.process(sexp)
  self.new(sexp)
end

Public Instance Methods

arg_nodes() click to toggle source
# File lib/merb-action-args/mri_args.rb, line 30
def arg_nodes
  self[1..-1].inject([]) do |sum,item|
    sum << [item] unless item.is_a?(Array)
    sum
  end
end
deep_array_node(type = nil) click to toggle source
# File lib/merb-action-args/mri_args.rb, line 21
def deep_array_node(type = nil)
  each do |node|
    return ParseTreeArray.new(node) if node.is_a?(Array) && (!type || node[0] == type)
    next unless node.is_a?(Array)
    return ParseTreeArray.new(node).deep_array_node(type)
  end
  nil
end
get_args() click to toggle source
# File lib/merb-action-args/mri_args.rb, line 37
def get_args
  if arg_node = deep_array_node(:args)
    # method defined with def keyword
    args = arg_node.arg_nodes
    default_node = arg_node.deep_array_node(:block)
    return [args, []] unless default_node
  else
    # assuming method defined with Module#define_method
    return [[],[]]
  end
  
  # if it was defined with def, and we found the default_node,
  # that should bring us back to regularly scheduled programming..
  lasgns = default_node[1..-1]
  lasgns.each do |asgn|
    args.assoc(asgn[1]) << eval(R2R.new.process(asgn[2]))
  end
  [args, (default_node[1..-1].map { |asgn| asgn[1] })]
end

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