Module: Jat::Plugins::SimpleApi::FieldsParamParser::InstanceMethods

Included in:
Jat::Plugins::SimpleApi::FieldsParamParser
Defined in:
lib/jat/plugins/simple_api/lib/fields_param_parser.rb

Constant Summary collapse

COMMA = 
","
OPEN_BRACKET = 
"("
CLOSE_BRACKET = 
")"

Instance Method Summary collapse

Instance Method Details

#initialize(fields) ⇒ Object 



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# File 'lib/jat/plugins/simple_api/lib/fields_param_parser.rb', line 30

def initialize(fields)
  @fields = fields
end

#parse ⇒ Object

user => { user: {} } user(id) => { user: { id: {} } } user(id,name) => { user: { id: {}, name: {} } } user,comments => { user: {}, comments: {} } user(comments(text)) => { user: { comments: { text: {} } } }



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# File 'lib/jat/plugins/simple_api/lib/fields_param_parser.rb', line 39

def parse
  current_attr = nil

  fields.each_char do |char|
    case char
    when COMMA
      next unless current_attr

      add_attribute(current_attr)
      current_attr = nil
    when CLOSE_BRACKET
      if current_attr
        add_attribute(current_attr)
        current_attr = nil
      end

      route.pop
    when OPEN_BRACKET
      next unless current_attr

      attribute_name = add_attribute(current_attr, {})
      route << attribute_name
      current_attr = nil
    else
      current_attr = current_attr ? current_attr.insert(-1, char) : char
    end
  end

  add_attribute(current_attr) if current_attr

  res
end