Module: GraphQL::BackwardsCompatibility Private
- Defined in:
- lib/graphql/backwards_compatibility.rb
Overview
This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.
Helpers for migrating in a backwards-compatible way
Defined Under Namespace
Classes: FirstArgumentsWrapper, LastArgumentsWrapper
Class Method Summary collapse
-
.get_arity(callable) ⇒ Object
private
-
.wrap_arity(callable, from:, to:, name:, last: false) ⇒ Object
private
Given a callable whose API used to take
from
arguments, check its arity, and if needed, apply a wrapper so that it can be called withto
arguments.
Class Method Details
.get_arity(callable) ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
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# File 'lib/graphql/backwards_compatibility.rb', line 32 def get_arity(callable) case callable when Method, Proc callable.arity else callable.method(:call).arity end end |
.wrap_arity(callable, from:, to:, name:, last: false) ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Given a callable whose API used to take from
arguments,
check its arity, and if needed, apply a wrapper so that
it can be called with to
arguments.
If a wrapper is applied, warn the application with name
.
If last
, then use the last arguments to call the function.
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# File 'lib/graphql/backwards_compatibility.rb', line 13 def wrap_arity(callable, from:, to:, name:, last: false) arity = get_arity(callable) if arity == to || arity < 0 # It already matches, return it as is callable elsif arity == from # It has the old arity, so wrap it with an arity converter ="#{name} with #{from} arguments is deprecated, it now accepts #{to} arguments, see:" backtrace = caller(0, 20) # Find the first line in the trace that isn't library internals: user_line = backtrace.find {|l| l !~ /lib\/graphql/ } warn( + "\n" + user_line + "\n") wrapper = last ? LastArgumentsWrapper : FirstArgumentsWrapper wrapper.new(callable, from) else raise "Can't wrap #{callable} (arity: #{arity}) to have arity #{to}" end end |