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Contents
# frozen_string_literal: true
module Hashdiff
# @private
# Used to compare hashes
class CompareHashes
class << self
def call(obj1, obj2, opts = {})
return [] if obj1.empty? && obj2.empty?
obj1_keys = obj1.keys
obj2_keys = obj2.keys
added_keys = (obj2_keys - obj1_keys).sort_by(&:to_s)
common_keys = (obj1_keys & obj2_keys).sort_by(&:to_s)
deleted_keys = (obj1_keys - obj2_keys).sort_by(&:to_s)
result = []
# add deleted properties
deleted_keys.each do |k|
change_key = Hashdiff.prefix_append_key(opts[:prefix], k, opts)
custom_result = Hashdiff.custom_compare(opts[:comparison], change_key, obj1[k], nil)
if custom_result
result.concat(custom_result)
else
result << ['-', change_key, obj1[k]]
end
end
# recursive comparison for common keys
common_keys.each do |k|
prefix = Hashdiff.prefix_append_key(opts[:prefix], k, opts)
result.concat(Hashdiff.diff(obj1[k], obj2[k], opts.merge(prefix: prefix)))
end
# added properties
added_keys.each do |k|
change_key = Hashdiff.prefix_append_key(opts[:prefix], k, opts)
custom_result = Hashdiff.custom_compare(opts[:comparison], change_key, nil, obj2[k])
if custom_result
result.concat(custom_result)
else
result << ['+', change_key, obj2[k]]
end
end
result
end
end
end
end
Version data entries
15 entries across 14 versions & 4 rubygems