Class: Panko::ObjectWriter

Inherits:
Object
  • Object
show all
Defined in:
lib/panko/object_writer.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ObjectWriter 



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# File 'lib/panko/object_writer.rb', line 4

def initialize
  @values = []
  @keys = []

  @next_key = nil
  @output = nil
end

Instance Method Details

#output ⇒ Object 



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# File 'lib/panko/object_writer.rb', line 64

def output
  raise "Output is called before poping all" unless @values.empty?
  @output
end

#pop ⇒ Object 



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# File 'lib/panko/object_writer.rb', line 48

def pop
  result = @values.pop

  if @values.empty?
    @output = result
    return
  end

  scope_key = @keys.pop
  if scope_key.nil?
    @values.last << result
  else
    @values.last[scope_key] = result
  end
end

#push_array(key = nil) ⇒ Object 



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# File 'lib/panko/object_writer.rb', line 17

def push_array(key = nil)
  @values << []
  @keys << key
end

#push_json(value, key = nil) ⇒ Object 



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# File 'lib/panko/object_writer.rb', line 36

def push_json(value, key = nil)
  if value.is_a?(String)
    value = begin
      Oj.load(value)
    rescue
      nil
    end
  end

  push_value(value, key)
end

#push_key(key) ⇒ Object 



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# File 'lib/panko/object_writer.rb', line 22

def push_key(key)
  @next_key = key
end

#push_object(key = nil) ⇒ Object 



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# File 'lib/panko/object_writer.rb', line 12

def push_object(key = nil)
  @values << {}
  @keys << key
end

#push_value(value, key = nil) ⇒ Object 



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# File 'lib/panko/object_writer.rb', line 26

def push_value(value, key = nil)
  unless @next_key.nil?
    raise "push_value is called with key after push_key is called" unless key.nil?
    key = @next_key
    @next_key = nil
  end

  @values.last[key] = value.as_json
end