Class: Inspector

Inherits:
Object
  • Object
show all
Defined in:
lib/rdb/inspector.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Inspector

Returns a new instance of Inspector.



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# File 'lib/rdb/inspector.rb', line 4

def initialize
  @seen_ids = Set.new
end

Class Method Details

.inspect(obj) ⇒ Object 



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# File 'lib/rdb/inspector.rb', line 8

def self.inspect(obj)
  Inspector.new.inspect(obj)
end

Instance Method Details

#inspect(obj) ⇒ Object 



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# File 'lib/rdb/inspector.rb', line 12

def inspect(obj)
  if !@seen_ids.add?(obj.object_id)
    return "(circular reference)"
  end

  # Range, Regex, Block, Proc, lambda, Thread, Set, ...
  case obj
  when Class
    return { class: obj.class.name, content: obj.name }
  when Fixnum, Float, TrueClass, FalseClass, NilClass, String, Symbol
    return { class: obj.class.name, content: obj }
  when Array
    return { class: obj.class.name, content: obj.map { |x| inspect(x) } }
  when Hash
    inspected = []
    obj.each do |k, v|
      inspected << [inspect(k), inspect(v)]
    end
    return { class: obj.class.name, content: inspected }
  end

  vars = Hash[obj.instance_variables.map { |var|
    [var, inspect(obj.instance_variable_get(var))]
  }]

  return {
    class: obj.class.name,
    content: vars
  }
end