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# frozen_string_literal: true
class JsonPath
module Dig
# Similar to what Hash#dig or Array#dig
def dig(context, *keys)
keys.inject(context){|memo,k|
dig_one(memo, k)
}
end
# Returns a hash mapping each key from keys
# to its dig value on context.
def dig_as_hash(context, keys)
keys.each_with_object({}) do |k, memo|
memo[k] = dig_one(context, k)
end
end
# Dig the value of k on context.
def dig_one(context, k)
case context
when Hash
context[@options[:use_symbols] ? k.to_sym : k]
when Array
context[k.to_i]
else
if context.respond_to?(:dig)
context.dig(k)
elsif @options[:allow_send]
context.__send__(k)
end
end
end
# Yields the block if context has a diggable
# value for k
def yield_if_diggable(context, k, &blk)
case context
when Array
nil
when Hash
k = @options[:use_symbols] ? k.to_sym : k
return yield if context.key?(k) || @options[:default_path_leaf_to_null]
else
if context.respond_to?(:dig)
digged = dig_one(context, k)
yield if !digged.nil? || @options[:default_path_leaf_to_null]
elsif @options[:allow_send] && context.respond_to?(k.to_s) && !Object.respond_to?(k.to_s)
yield
end
end
end
end
end
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