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
| 1071 | |
| 1072 | |
| 1073 | class _IncludeState(object): |
| 1074 | """Tracks line numbers for includes, and the order in which includes appear. |
| 1075 | |
| 1076 | include_list contains list of lists of (header, line number) pairs. |
| 1077 | It's a lists of lists rather than just one flat list to make it |
| 1078 | easier to update across preprocessor boundaries. |
| 1079 | |
| 1080 | Call CheckNextIncludeOrder() once for each header in the file, passing |
| 1081 | in the type constants defined above. Calls in an illegal order will |
| 1082 | raise an _IncludeError with an appropriate error message. |
| 1083 | |
| 1084 | """ |
| 1085 | # self._section will move monotonically through this set. If it ever |
| 1086 | # needs to move backwards, CheckNextIncludeOrder will raise an error. |
| 1087 | _INITIAL_SECTION = 0 |
| 1088 | _MY_H_SECTION = 1 |
| 1089 | _C_SECTION = 2 |
| 1090 | _CPP_SECTION = 3 |
| 1091 | _OTHER_SYS_SECTION = 4 |
| 1092 | _OTHER_H_SECTION = 5 |
| 1093 | |
| 1094 | _TYPE_NAMES = { |
| 1095 | _C_SYS_HEADER: 'C system header', |
| 1096 | _CPP_SYS_HEADER: 'C++ system header', |
| 1097 | _OTHER_SYS_HEADER: 'other system header', |
| 1098 | _LIKELY_MY_HEADER: 'header this file implements', |
| 1099 | _POSSIBLE_MY_HEADER: 'header this file may implement', |
| 1100 | _OTHER_HEADER: 'other header', |
| 1101 | } |
| 1102 | _SECTION_NAMES = { |
| 1103 | _INITIAL_SECTION: "... nothing. (This can't be an error.)", |
| 1104 | _MY_H_SECTION: 'a header this file implements', |
| 1105 | _C_SECTION: 'C system header', |
| 1106 | _CPP_SECTION: 'C++ system header', |
| 1107 | _OTHER_SYS_SECTION: 'other system header', |
| 1108 | _OTHER_H_SECTION: 'other header', |
| 1109 | } |
| 1110 | |
| 1111 | def __init__(self): |
| 1112 | self.include_list = [[]] |
| 1113 | self._section = None |
| 1114 | self._last_header = None |
| 1115 | self.ResetSection('') |
| 1116 | |
| 1117 | def FindHeader(self, header): |
| 1118 | """Check if a header has already been included. |
| 1119 | |
| 1120 | Args: |
| 1121 | header: header to check. |
| 1122 | Returns: |
| 1123 | Line number of previous occurrence, or -1 if the header has not |
| 1124 | been seen before. |
| 1125 | """ |
| 1126 | for section_list in self.include_list: |
| 1127 | for f in section_list: |
| 1128 | if f[0] == header: |
| 1129 | return f[1] |
| 1130 | return -1 |