Sha256: 81a16c909eb59bf8294ef95b0805930ab9e785206e4e6fb3f6572c0ba95792e2
Contents?: true
Size: 1.2 KB
Versions: 102
Compression:
Stored size: 1.2 KB
Contents
# frozen_string_literal: true
module GraphQL
# @api private
class Filter
def initialize(only: nil, except: nil)
@only = only
@except = except
end
# Returns true if `member, ctx` passes this filter
def call(member, ctx)
(@only ? @only.call(member, ctx) : true) &&
(@except ? !@except.call(member, ctx) : true)
end
def merge(only: nil, except: nil)
onlies = [self].concat(Array(only))
merged_only = MergedOnly.build(onlies)
merged_except = MergedExcept.build(Array(except))
self.class.new(only: merged_only, except: merged_except)
end
private
class MergedOnly
def initialize(first, second)
@first = first
@second = second
end
def call(member, ctx)
@first.call(member, ctx) && @second.call(member, ctx)
end
def self.build(onlies)
case onlies.size
when 0
nil
when 1
onlies[0]
else
onlies.reduce { |memo, only| self.new(memo, only) }
end
end
end
class MergedExcept < MergedOnly
def call(member, ctx)
@first.call(member, ctx) || @second.call(member, ctx)
end
end
end
end
Version data entries
102 entries across 102 versions & 2 rubygems