/src/tools/syntax/tree/liberty_ast_when_slice.e

http://github.com/tybor/Liberty · Specman e · 55 lines · 32 code · 9 blank · 14 comment · 0 complexity · f3c2f46743365ee0d5aa69804145b3db MD5 · raw file

  1. -- This file is part of Liberty Eiffel.
  2. --
  3. -- Liberty Eiffel is free software: you can redistribute it and/or modify
  4. -- it under the terms of the GNU General Public License as published by
  5. -- the Free Software Foundation, version 3 of the License.
  6. --
  7. -- Liberty Eiffel is distributed in the hope that it will be useful,
  8. -- but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  10. -- GNU General Public License for more details.
  11. --
  12. -- You should have received a copy of the GNU General Public License
  13. -- along with Liberty Eiffel. If not, see <http://www.gnu.org/licenses/>.
  14. --
  15. class LIBERTY_AST_WHEN_SLICE
  16. inherit
  17. LIBERTY_AST_NON_TERMINAL_NODE
  18. create {LIBERTY_NODE_FACTORY}
  19. make
  20. feature {LIBERTY_AST_HANDLER}
  21. low_value: LIBERTY_AST_WHEN_VALUE is
  22. do
  23. Result ::= nodes.item(0)
  24. end
  25. up_value: LIBERTY_AST_WHEN_VALUE is
  26. require
  27. has_up_value
  28. do
  29. Result ::= nodes.item(2)
  30. end
  31. has_up_value: BOOLEAN is
  32. do
  33. Result := count = 3
  34. end
  35. feature {ANY}
  36. count: INTEGER is
  37. do
  38. Result := nodes.count
  39. end
  40. name: STRING is "When_Slice"
  41. feature {}
  42. possible_counts: SET[INTEGER] is
  43. once
  44. Result := {AVL_SET[INTEGER] << 1, 3 >> }
  45. end
  46. end