Class: Contrast::Agent::Assess::Policy::Propagator::Select

Inherits:
Object
  • Object
show all
Defined in:
lib/contrast/agent/assess/policy/propagator/select.rb

Overview

This class is specifically for String#select propagation

Disclaimer: there may be a better way, but we’re in a ‘get it work’ state. hopefully, we’ll be in a ‘get it right’ state soon.

Class Method Summary collapse

Class Method Details

.select_tagger(patcher, preshift, ret, _block) ⇒ Object 



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# File 'lib/contrast/agent/assess/policy/propagator/select.rb', line 16

def select_tagger patcher, preshift, ret, _block
  source = preshift.object
  args = preshift.args

  # 'gotcha'
  # Additionally, an empty string is returned when the starting index for
  # a character range is at the end of the string. Let's just skip that
  # and only track a string that has length
  return unless ret && !ret.empty? && Contrast::Agent::Assess::Tracker.tracked?(source)

  return unless (source_properties = Contrast::Agent::Assess::Tracker.properties(source))
  return unless (properties = Contrast::Agent::Assess::Tracker.properties!(ret))

  event_data = Contrast::Agent::Assess::Events::EventData.new(patcher, ret, source, ret, args)
  properties.build_event(event_data)

  range = determine_select_range(source, args)
  return unless range

  tags = source_properties.tags_at_range(range)
  properties.clear_tags
  tags.each_pair do |key, value|
    properties.set_tags(key, value)
  end
  ret
end