Tracks line numbers for includes, and the order in which includes appear. include_list contains list of lists of (header, line number) pairs. It's a lists of lists rather than just one flat list to make it easier to update across preprocessor boundaries. Call CheckNextIncludeOrder() once f
| 683 | |
| 684 | |
| 685 | class _IncludeState(object): |
| 686 | """Tracks line numbers for includes, and the order in which includes appear. |
| 687 | |
| 688 | include_list contains list of lists of (header, line number) pairs. |
| 689 | It's a lists of lists rather than just one flat list to make it |
| 690 | easier to update across preprocessor boundaries. |
| 691 | |
| 692 | Call CheckNextIncludeOrder() once for each header in the file, passing |
| 693 | in the type constants defined above. Calls in an illegal order will |
| 694 | raise an _IncludeError with an appropriate error message. |
| 695 | |
| 696 | """ |
| 697 | # self._section will move monotonically through this set. If it ever |
| 698 | # needs to move backwards, CheckNextIncludeOrder will raise an error. |
| 699 | _INITIAL_SECTION = 0 |
| 700 | _MY_H_SECTION = 1 |
| 701 | _C_SECTION = 2 |
| 702 | _CPP_SECTION = 3 |
| 703 | _OTHER_H_SECTION = 4 |
| 704 | |
| 705 | _TYPE_NAMES = { |
| 706 | _C_SYS_HEADER: 'C system header', |
| 707 | _CPP_SYS_HEADER: 'C++ system header', |
| 708 | _LIKELY_MY_HEADER: 'header this file implements', |
| 709 | _POSSIBLE_MY_HEADER: 'header this file may implement', |
| 710 | _OTHER_HEADER: 'other header', |
| 711 | } |
| 712 | _SECTION_NAMES = { |
| 713 | _INITIAL_SECTION: "... nothing. (This can't be an error.)", |
| 714 | _MY_H_SECTION: 'a header this file implements', |
| 715 | _C_SECTION: 'C system header', |
| 716 | _CPP_SECTION: 'C++ system header', |
| 717 | _OTHER_H_SECTION: 'other header', |
| 718 | } |
| 719 | |
| 720 | def __init__(self): |
| 721 | self.include_list = [[]] |
| 722 | self.ResetSection('') |
| 723 | |
| 724 | def FindHeader(self, header): |
| 725 | """Check if a header has already been included. |
| 726 | |
| 727 | Args: |
| 728 | header: header to check. |
| 729 | Returns: |
| 730 | Line number of previous occurrence, or -1 if the header has not |
| 731 | been seen before. |
| 732 | """ |
| 733 | for section_list in self.include_list: |
| 734 | for f in section_list: |
| 735 | if f[0] == header: |
| 736 | return f[1] |
| 737 | return -1 |
| 738 | |
| 739 | def ResetSection(self, directive): |
| 740 | """Reset section checking for preprocessor directive. |
| 741 | |
| 742 | Args: |