/src/lib/backtracking/low_level/backtracking_sequence_list.e

http://github.com/tybor/Liberty · Specman e · 63 lines · 28 code · 6 blank · 29 comment · 1 complexity · 8b1184cffff7b84eca957497c256d3f2 MD5 · raw file

  1. -- This file is part of a Liberty Eiffel library.
  2. -- See the full copyright at the end.
  3. --
  4. class BACKTRACKING_SEQUENCE_LIST
  5. --
  6. -- A sequence of a list of nodes.
  7. --
  8. inherit
  9. ABSTRACT_BACKTRACKING_SEQUENCE
  10. rename pool as pool_of_sequence_list
  11. end
  12. insert
  13. BACKTRACKING_GLOBALS
  14. feature {ABSTRACT_BACKTRACKING}
  15. list: BACKTRACKING_NODE_AND_LIST
  16. -- Iterator on the next item of the list.
  17. set_list (value: BACKTRACKING_NODE_AND_LIST)
  18. require
  19. value_not_void: value /= Void
  20. do
  21. list := value
  22. ensure
  23. definition: list = value
  24. list_not_void: list /= Void
  25. end
  26. feature {ABSTRACT_BACKTRACKING}
  27. next_sequence (explorer: BACKTRACKING)
  28. do
  29. -- Tell to evaluate 'list.node' now.
  30. explorer.set_current_node(list.node)
  31. list := list.next
  32. if list = Void then
  33. -- Sequence is off, remove it.
  34. explorer.pop_sequence
  35. end
  36. end
  37. end -- class BACKTRACKING_SEQUENCE_LIST
  38. --
  39. -- Copyright (C) 2009-2017: by all the people cited in the AUTHORS file.
  40. --
  41. -- Permission is hereby granted, free of charge, to any person obtaining a copy
  42. -- of this software and associated documentation files (the "Software"), to deal
  43. -- in the Software without restriction, including without limitation the rights
  44. -- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  45. -- copies of the Software, and to permit persons to whom the Software is
  46. -- furnished to do so, subject to the following conditions:
  47. --
  48. -- The above copyright notice and this permission notice shall be included in
  49. -- all copies or substantial portions of the Software.
  50. --
  51. -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  52. -- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  53. -- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  54. -- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  55. -- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  56. -- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  57. -- THE SOFTWARE.