Class: Opal::Nodes::ArrayNode

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

Instance Attribute Summary

Attributes inherited from Base

#compiler, #sexp, #type

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_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

#conditional_send, #current_indent, #empty_line, #indent, #js_falsy, #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/array.rb', line 10

def compile
  return push('[]') if children.empty?

  code, work = [], []

  children.each do |child|
    splat = child.type == :splat
    part  = expr(child)

    if splat
      if work.empty?
        if code.empty?
          code << fragment('[].concat(') << part << fragment(')')
        else
          code << fragment('.concat(') << part << fragment(')')
        end
      else
        if code.empty?
          code << fragment('[') << work << fragment(']')
        else
          code << fragment('.concat([') << work << fragment('])')
        end

        code << fragment('.concat(') << part << fragment(')')
      end
      work = []
    else
      work << fragment(', ') unless work.empty?
      work << part
    end
  end

  unless work.empty?
    join = [fragment('['), work, fragment(']')]

    if code.empty?
      code = join
    else
      code.push([fragment('.concat('), join, fragment(')')])
    end
  end

  push code
end