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

Parameters:

  • patcher (Contrast::Agent::Assess::Patcher) —

    the patcher

  • preshift (Object) —

    pre call state of the things.

  • ret (Object) —

    the return value of the method.

  • _block (Proc) —

    the block passed to the method.



20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
 
# File 'lib/contrast/agent/assess/policy/propagator/select.rb', line 20

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