Class: Opal::Nodes::IterArityCheckNode

Inherits:
ArityCheckNode show all
Defined in:
opal/lib/opal/nodes/args/arity_check.rb

Instance Attribute Summary

Attributes inherited from Base

#compiler, #sexp, #type

Instance Method Summary collapse

Methods inherited from ArityCheckNode

#all_args, #arity, #arity_checks, #has_only_optional_kwargs?, #has_required_kwargs?, #initialize, #kwargs, #negative_arity, #positive_arity

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_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 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::ArityCheckNode

Instance Method Details

#compile ⇒ Object 



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# File 'opal/lib/opal/nodes/args/arity_check.rb', line 121

def compile
  scope.arity = arity

  return unless compiler.arity_check?

  unless arity_checks.empty?
    parent_scope = scope
    until parent_scope.def? || parent_scope.class_scope? || parent_scope.top?
      parent_scope = parent_scope.parent
    end

    context =
      if parent_scope.top?
        "'<main>'"
      elsif parent_scope.def?
        "'#{parent_scope.mid}'"
      elsif parent_scope.class?
        "'<class:#{parent_scope.name}>'"
      elsif parent_scope.module?
        "'<module:#{parent_scope.name}>'"
      end

    identity = scope.identity

    line "if (#{identity}.$$is_lambda || #{identity}.$$define_meth) {"
    line '  var $arity = arguments.length;'
    line "  if (#{arity_checks.join(' || ')}) { Opal.block_ac($arity, #{arity}, #{context}); }"
    line '}'
  end
end