Class: Opal::Nodes::KwoptArgNode

Inherits:
InitializeKwargsNode show all
Defined in:
opal/lib/opal/nodes/args/kwoptarg.rb

Overview

A node responsible for extracting a single optional keyword argument

def m(kw: 1)

Constant Summary

Constants included from Helpers

Helpers::BASIC_IDENTIFIER_RULES, Helpers::ES3_RESERVED_WORD_EXCLUSIVE, Helpers::ES51_RESERVED_WORD, Helpers::IMMUTABLE_PROPS, Helpers::PROTO_SPECIAL_METHODS, Helpers::PROTO_SPECIAL_PROPS, Helpers::RESERVED_FUNCTION_NAMES

Instance Attribute Summary

Attributes inherited from Base

#compiler, #type

Instance Method Summary collapse

Methods inherited from InitializeKwargsNode

#initialize_kw_args_if_needed

Methods inherited from Base

#add_gvar, #add_ivar, #add_local, #add_temp, #children, children, #compile_to_fragments, #error, #expr, #expr?, #expr_or_nil, #fragment, handle, handlers, #has_rescue_else?, #helper, #in_ensure, #in_ensure?, #in_while?, #initialize, #process, #push, #recv, #recv?, #s, #scope, #stmt, #stmt?, truthy_optimize?, #unshift, #while_loop, #with_temp, #wrap

Methods included from Helpers

#current_indent, #empty_line, #indent, #ivar, #js_falsy, #js_truthy, #js_truthy_optimize, #line, #lvar_to_js, #mid_to_jsid, #property, #valid_ivar_name?, #valid_name?, #variable

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/kwoptarg.rb', line 13

def compile
  initialize_kw_args_if_needed

  kwoptarg_name = @sexp[1].to_sym
  default_value = @sexp[2]
  var_name = variable(kwoptarg_name)
  add_temp var_name

  line "if ((#{var_name} = $kwargs.$$smap['#{kwoptarg_name}']) == null) {"
  line "  #{var_name} = ", expr(default_value)
  line "}"

  scope.used_kwargs << kwoptarg_name
end