Class: Gitlab::Diff::PositionTracer::FileStrategy

Inherits:
BaseStrategy
  • Object
show all
Defined in:
lib/gitlab/diff/position_tracer/file_strategy.rb

Direct Known Subclasses

ImageStrategy

Instance Attribute Summary

Attributes inherited from BaseStrategy

#tracer

Instance Method Summary collapse

Methods inherited from BaseStrategy

#initialize

Constructor Details

This class inherits a constructor from Gitlab::Diff::PositionTracer::BaseStrategy

Instance Method Details

#trace(position) ⇒ Object 



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# File 'lib/gitlab/diff/position_tracer/file_strategy.rb', line 7

def trace(position)
  a_path = position.old_path
  b_path = position.new_path

  # If file exists in B->D (e.g. updated, renamed, removed), let the
  # note become outdated.
  bd_diff = bd_diffs.diff_file_with_old_path(b_path)

  return { position: new_position(position, bd_diff), outdated: true } if bd_diff

  # If file still exists in the new diff, update the position.
  cd_diff = cd_diffs.diff_file_with_new_path(b_path)

  return { position: new_position(position, cd_diff), outdated: false } if cd_diff

  # If file exists in A->C (e.g. rebased and same changes were present
  # in target branch), let the note become outdated.
  ac_diff = ac_diffs.diff_file_with_old_path(a_path)

  return { position: new_position(position, ac_diff), outdated: true } if ac_diff

  # If ever there's a case that the file no longer exists in any diff,
  # don't set a change position and let the note become outdated.
  #
  # This should never happen given the file should exist in one of the
  # diffs above.
  { outdated: true }
end