File: perf_scp.rb

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#!/usr/bin/env ruby -wW1
# frozen_string_literal: true

$LOAD_PATH << '.'
$LOAD_PATH << File.join(__dir__, '../lib')
$LOAD_PATH << File.join(__dir__, '../ext')

require 'optparse'
# require 'yajl'
require 'perf'
require 'json'
require 'json/ext'
require 'oj'

@verbose = false
@indent = 0
@iter = 50_000
@with_bignum = false
@size = 1

opts = OptionParser.new
opts.on('-v', 'verbose')                                  { @verbose = true }
opts.on('-c', '--count [Int]', Integer, 'iterations')     { |i| @iter = i }
opts.on('-i', '--indent [Int]', Integer, 'indentation')   { |i| @indent = i }
opts.on('-s', '--size [Int]', Integer, 'size (~Kbytes)')  { |i| @size = i }
opts.on('-b', 'with bignum')                              { @with_bignum = true }
opts.on('-h', '--help', 'Show this display')              { puts opts; Process.exit!(0) }
opts.parse(ARGV)

@obj = {
  'a' => 'Alpha', # string
  'b' => true,    # boolean
  'c' => 12_345,   # number
  'd' => [ true, [false, [-123_456_789, nil], 3.9676, ['Something else.', false], nil]], # mix it up array
  'e' => { 'zero' => nil, 'one' => 1, 'two' => 2, 'three' => [3], 'four' => [0, 1, 2, 3, 4] }, # hash
  'f' => nil,     # nil
  'h' => { 'a' => { 'b' => { 'c' => { 'd' => {'e' => { 'f' => { 'g' => nil }}}}}}}, # deep hash, not that deep
  'i' => [[[[[[[nil]]]]]]]  # deep array, again, not that deep
}
@obj['g'] = 12_345_678_901_234_567_890_123_456_789 if @with_bignum

if 0 < @size
  ob = @obj
  @obj = []
  (4 * @size).times do
    @obj << ob
  end
end

Oj.default_options = { :indent => @indent, :mode => :strict, cache_keys: true, cache_str: 5 }

@json = Oj.dump(@obj)
@failed = {} # key is same as String used in tests later

class AllSaj < Oj::Saj
  def hash_start(key)
  end

  def hash_end(key)
  end

  def array_start(key)
  end

  def array_end(key)
  end

  def add_value(value, key)
  end
end # AllSaj

class NoSaj < Oj::Saj
end # NoSaj

class NoHandler < Oj::ScHandler
end # NoHandler

class AllHandler < Oj::ScHandler
  def hash_start
    nil
  end

  def hash_end
  end

  def array_start
    nil
  end

  def array_end
  end

  def add_value(value)
  end

  def hash_set(h, key, value)
  end

  def array_append(a, value)
  end

end # AllHandler

saj_handler = AllSaj.new()
no_saj = NoSaj.new()

sc_handler = AllHandler.new()
no_handler = NoHandler.new()

def capture_error(tag, orig, load_key, dump_key, &blk)
  obj = blk.call(orig)
  raise "#{tag} #{dump_key} and #{load_key} did not return the same object as the original." unless orig == obj
rescue Exception => e
  @failed[tag] = "#{e.class}: #{e.message}"
end

# Verify that all packages dump and load correctly and return the same Object as the original.
# capture_error('Yajl', @obj, 'encode', 'parse') { |o| Yajl::Parser.parse(Yajl::Encoder.encode(o)) }
capture_error('JSON::Ext', @obj, 'generate', 'parse') { |o| JSON.generator = JSON::Ext::Generator; JSON::Ext::Parser.new(JSON.generate(o)).parse }

if @verbose
  puts "json:\n#{@json}\n"
end

puts '-' * 80
puts 'Parse Performance'
perf = Perf.new()
perf.add('Oj::Saj.all', 'all') { Oj.saj_parse(saj_handler, @json) }
perf.add('Oj::Saj.none', 'none') { Oj.saj_parse(no_saj, @json) }
perf.add('Oj::Scp.all', 'all') { Oj.sc_parse(sc_handler, @json) }
perf.add('Oj::Scp.none', 'none') { Oj.sc_parse(no_handler, @json) }
perf.add('Oj::load', 'none') { Oj.wab_load(@json) }
# perf.add('Yajl', 'parse') { Yajl::Parser.parse(@json) } unless @failed.has_key?('Yajl')
perf.add('JSON::Ext', 'parse') { JSON::Ext::Parser.new(@json).parse } unless @failed.key?('JSON::Ext')
perf.run(@iter)

unless @failed.empty?
  puts 'The following packages were not included for the reason listed'
  @failed.each { |tag, msg| puts "***** #{tag}: #{msg}" }
end