Class: Opal::Nodes::Args::ExtractKwrestarg

Inherits:
Base
  • Object
show all
Defined in:
opal/lib/opal/nodes/args/extract_kwrestarg.rb

Overview

This node is responsible for extracting a single splat keyword argument from $kwargs

$kwargs always exist (as argument when inlining is possible and as a local variable when it's not)

Instance Attribute Summary

Attributes inherited from Base

#compiler, #sexp, #type

Attributes included from Closure::NodeSupport

#closure

Instance Method Summary collapse

Methods inherited from Base

#add_gvar, #add_ivar, #add_local, #add_temp, #children, children, #class_variable_owner, #class_variable_owner_nesting_level, #comments, #compile_to_fragments, #error, #expr, #expr?, #expr_or_empty, #expr_or_nil, #fragment, handle, handlers, #has_rescue_else?, #helper, #in_ensure, #in_ensure?, #in_resbody, #in_resbody?, #in_rescue, #in_while?, #initialize, #process, #push, #recv, #recv?, #s, #scope, #source_location, #stmt, #stmt?, #top_scope, truthy_optimize?, #unshift, #while_loop, #with_temp, #wrap

Methods included from Closure::NodeSupport

#closure_is?, #compile_catcher, #generate_thrower, #generate_thrower_without_catcher, #in_closure, #pop_closure, #push_closure, #select_closure, #thrower

Methods included from Helpers

#current_indent, #empty_line, #indent, #js_truthy, #js_truthy_optimize, #line, #mid_to_jsid, #property, #valid_name?

Constructor Details

This class inherits a constructor from Opal::Nodes::Base

Instance Method Details

#compile ⇒ Object 



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# File 'opal/lib/opal/nodes/args/extract_kwrestarg.rb', line 18

def compile
  # def m(**)
  # arguments are assigned to `$kw_rest_arg` for super call
  name = self.name || '$kw_rest_arg'

  add_temp name

  helper :kwrestargs

  push "#{name} = $kwrestargs($kwargs, #{used_kwargs})"
end

#used_kwargs ⇒ Object 



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# File 'opal/lib/opal/nodes/args/extract_kwrestarg.rb', line 30

def used_kwargs
  args = scope.used_kwargs.map do |arg_name|
    "'#{arg_name}': true"
  end

  "{#{args.join ','}}"
end