Class: Opal::Nodes::ForNode

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

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

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, #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/for.rb', line 10

def compile
  with_temp do |loop_var|
    if args_sexp.type == :array
      assign = s(:masgn, args_sexp)
      assign << s(:to_ary, s(:js_tmp, loop_var))
    else
      assign = args_sexp << s(:js_tmp, loop_var)
    end

    if body_sexp
      if body_sexp.first == :block
        body_sexp.insert 1, assign
        assign = body_sexp
      else
        assign = s(:block, assign, body_sexp)
      end
    end

    assign.children.each do |sexp|
      case sexp[0]
      when :lasgn
        add_local sexp[1]
      when :masgn
        if sexp[1][0] == :array
          sexp[1][1].each do |sexp|
            add_local sexp[1] if sexp[0] == :lasgn
          end
        end
      end
    end

    iter = s(:iter, s(:lasgn, loop_var), assign)
    sexp = s(:call, value, :each, s(:arglist), iter)
    push expr(sexp)
  end
end