Class: Opal::Nodes::WhileNode

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

Direct Known Subclasses

UntilNode, WhilePostNode

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/while.rb', line 12

def compile
  test_code = js_truthy(test)

  @redo_var = scope.new_temp if uses_redo?

  compiler.in_while do
    while_loop[:closure] = true if wrap_in_closure?
    while_loop[:redo_var] = @redo_var

    in_closure(Closure::LOOP | Closure::JS_LOOP | (wrap_in_closure? ? Closure::JS_FUNCTION : 0)) do
      in_closure(Closure::LOOP_INSIDE | Closure::JS_LOOP_INSIDE) do
        line(indent { stmt(body) })
      end

      if uses_redo?
        compile_with_redo(test_code)
      else
        compile_without_redo(test_code)
      end
    end
  end

  scope.queue_temp(@redo_var) if uses_redo?

  if wrap_in_closure?
    if scope.await_encountered
      wrap '(await (async function() {', '; return nil; })())'
    else
      wrap '(function() {', '; return nil; })()'
    end
  end
end