Class: Peruby::Op::ModifierFor

Inherits:
Base
  • Object
show all
Includes:
LoopExecution
Defined in:
lib/peruby/op/loop.rb

Overview

Statement modifier: EXPR for LIST, with $_ aliased to each source cell.

Instance Method Summary collapse

Methods inherited from Base

#argument_cells, #local_slot, #lvalue, #run_subroutine, #to_callable, #warning_directive?

Constructor Details

#initialize(expression, list) ⇒ ModifierFor

Returns a new instance of ModifierFor.



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# File 'lib/peruby/op/loop.rb', line 114

def initialize(expression, list)
  @expression = expression
  @body = expression
  @list = list
  @label = nil
end

Instance Method Details

#run(env, _context) ⇒ Object 



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# File 'lib/peruby/op/loop.rb', line 121

def run(env, _context)
  @list.run(env, :list).each do |cell|
    keep_going = true
    env.with_scope do
      env.bind(:scalar, '_', cell)
      keep_going = run_iteration?(env)
    end
    break unless keep_going
  end
  nil
end