1 | from os.path import relpath |
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2 | |||
3 | from coalib.misc.Decorators import enforce_signature, get_public_members |
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4 | from coalib.results.SourcePosition import SourcePosition |
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5 | from coalib.results.TextRange import TextRange |
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6 | from coalib.results.AbsolutePosition import AbsolutePosition |
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7 | |||
8 | |||
9 | class SourceRange(TextRange): |
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10 | |||
11 | @enforce_signature |
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12 | def __init__(self, |
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13 | start: SourcePosition, |
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14 | end: (SourcePosition, None)=None): |
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15 | """ |
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16 | Creates a new SourceRange. |
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17 | |||
18 | :param start: A SourcePosition indicating the start of the range. |
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19 | :param end: A SourcePosition indicating the end of the range. |
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20 | If ``None`` is given, the start object will be used |
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21 | here. end must be in the same file and be greater |
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22 | than start as negative ranges are not allowed. |
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23 | :raises TypeError: Raised when |
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24 | - start is no SourcePosition or None. |
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25 | - end is no SourcePosition. |
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26 | :raises ValueError: Raised when file of start and end mismatch. |
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27 | """ |
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28 | TextRange.__init__(self, start, end) |
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29 | |||
30 | if self.start.file != self.end.file: |
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31 | raise ValueError("File of start and end position do not match.") |
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32 | |||
33 | @classmethod |
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34 | def from_values(cls, |
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35 | file, |
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36 | start_line=None, |
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37 | start_column=None, |
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38 | end_line=None, |
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39 | end_column=None): |
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40 | start = SourcePosition(file, start_line, start_column) |
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41 | if end_line or (end_column and end_column > start_column): |
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42 | end = SourcePosition(file, end_line if end_line else start_line, |
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43 | end_column) |
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44 | else: |
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45 | end = None |
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46 | |||
47 | return cls(start, end) |
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48 | |||
49 | @classmethod |
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50 | def from_clang_range(cls, range): |
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51 | """ |
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52 | Creates a SourceRange from a clang SourceRange object. |
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53 | |||
54 | :param range: A cindex.SourceRange object. |
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55 | """ |
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56 | return cls.from_values(range.start.file.name, |
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57 | range.start.line, |
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58 | range.start.column, |
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59 | range.end.line, |
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60 | range.end.column) |
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61 | |||
62 | @classmethod |
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63 | @enforce_signature |
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64 | def from_absolute_position(cls, |
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65 | file: str, |
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66 | position_start: AbsolutePosition, |
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67 | position_end: (AbsolutePosition, None)=None): |
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68 | """ |
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69 | Creates a SourceRange from a start and end positions. |
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70 | |||
71 | :param file: Name of the file. |
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72 | :param position_start: Start of range given by AbsolutePosition. |
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73 | :param position_end: End of range given by AbsolutePosition or None. |
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74 | """ |
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75 | start = SourcePosition(file, position_start.line, position_start.column) |
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76 | end = None |
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77 | if position_end: |
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78 | end = SourcePosition(file, position_end.line, position_end.column) |
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79 | return cls(start, end) |
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80 | |||
81 | @property |
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82 | def file(self): |
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83 | return self.start.file |
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84 | |||
85 | def expand(self, file_contents): |
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86 | """ |
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87 | Passes a new SourceRange that covers the same area of a file as this |
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88 | one would. All values of None get replaced with absolute values. |
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89 | |||
90 | values of None will be interpreted as follows: |
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91 | self.start.line is None: -> 1 |
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92 | self.start.column is None: -> 1 |
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93 | self.end.line is None: -> last line of file |
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94 | self.end.column is None: -> last column of self.end.line |
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95 | |||
96 | :param file_contents: File contents of the applicable file |
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97 | :return: TextRange with absolute values |
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98 | """ |
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99 | tr = TextRange.expand(self, file_contents) |
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100 | |||
101 | return SourceRange.from_values(self.file, |
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102 | tr.start.line, |
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103 | tr.start.column, |
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104 | tr.end.line, |
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105 | tr.end.column) |
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106 | |||
107 | def __json__(self, use_relpath=False): |
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108 | _dict = get_public_members(self) |
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109 | if use_relpath: |
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110 | _dict['file'] = relpath(_dict['file']) |
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111 | return _dict |
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112 |