Class: Opal::Nodes::ArglistNode

Inherits:
Base show all
Defined in:
opal/lib/opal/nodes/arglist.rb

Overview

FIXME: needs rewrite

Constant Summary

Constants included from Helpers

Helpers::BASIC_IDENTIFIER_RULES, Helpers::ES3_RESERVED_WORD_EXCLUSIVE, Helpers::ES51_RESERVED_WORD, Helpers::IMMUTABLE_PROPS

Instance Attribute Summary

Attributes inherited from Base

#compiler, #type

Instance Method Summary collapse

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, #helper, #in_while?, #initialize, #process, #push, #recv, #recv?, #s, #scope, #stmt, #stmt?, #unshift, #while_loop, #with_temp, #wrap

Methods included from Helpers

#current_indent, #empty_line, #indent, #js_falsy, #js_truthy, #js_truthy_optimize, #line, #lvar_to_js, #mid_to_jsid, #property, #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/arglist.rb', line 9

def compile
  code, work = [], []

  children.each do |current|
    splat = current.first == :splat
    arg   = expr(current)

    if splat
      if work.empty?
        if code.empty?
          code << fragment("[].concat(")
          code << arg
          code << fragment(")")
        else
          code += ".concat(#{arg})"
        end
      else
        if code.empty?
          code << [fragment("["), work, fragment("]")]
        else
          code << [fragment(".concat(["), work, fragment("])")]
        end

        code << [fragment(".concat("), arg, fragment(")")]
      end

      work = []
    else
      work << fragment(", ") unless work.empty?
      work << arg
    end
  end

  unless work.empty?
    join = work

    if code.empty?
      code = join
    else
      code << fragment(".concat(") << join << fragment(")")
    end
  end

  push(*code)
end