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from os.path import relpath |
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from coalib.misc.Decorators import enforce_signature, get_public_members |
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from coalib.results.SourcePosition import SourcePosition |
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from coalib.results.TextRange import TextRange |
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from coalib.results.AbsolutePosition import AbsolutePosition |
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class SourceRange(TextRange): |
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@enforce_signature |
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def __init__(self, |
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start: SourcePosition, |
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end: (SourcePosition, None)=None): |
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""" |
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Creates a new SourceRange. |
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:param start: A SourcePosition indicating the start of the range. |
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:param end: A SourcePosition indicating the end of the range. |
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If ``None`` is given, the start object will be used |
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here. end must be in the same file and be greater |
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than start as negative ranges are not allowed. |
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:raises TypeError: Raised when |
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- start is no SourcePosition or None. |
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- end is no SourcePosition. |
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:raises ValueError: Raised when file of start and end mismatch. |
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""" |
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TextRange.__init__(self, start, end) |
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if self.start.file != self.end.file: |
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raise ValueError("File of start and end position do not match.") |
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@classmethod |
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def from_values(cls, |
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file, |
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start_line=None, |
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start_column=None, |
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end_line=None, |
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end_column=None): |
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start = SourcePosition(file, start_line, start_column) |
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if end_line or (end_column and end_column > start_column): |
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end = SourcePosition(file, end_line if end_line else start_line, |
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end_column) |
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else: |
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end = None |
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return cls(start, end) |
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@classmethod |
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def from_clang_range(cls, range): |
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""" |
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Creates a SourceRange from a clang SourceRange object. |
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:param range: A cindex.SourceRange object. |
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""" |
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return cls.from_values(range.start.file.name, |
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range.start.line, |
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range.start.column, |
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range.end.line, |
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range.end.column) |
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@classmethod |
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@enforce_signature |
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def from_absolute_position(cls, |
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file: str, |
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position_start: AbsolutePosition, |
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position_end: (AbsolutePosition, None)=None): |
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""" |
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Creates a SourceRange from a start and end positions. |
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:param file: Name of the file. |
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:param position_start: Start of range given by AbsolutePosition. |
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:param position_end: End of range given by AbsolutePosition or None. |
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""" |
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start = SourcePosition(file, position_start.line, position_start.column) |
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end = None |
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if position_end: |
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end = SourcePosition(file, position_end.line, position_end.column) |
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return cls(start, end) |
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@property |
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def file(self): |
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return self.start.file |
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@enforce_signature |
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def renamed_file(self, file_diff_dict: dict): |
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""" |
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Retrieves the filename this source range refers to while taking the |
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possible file renamings in the given file_diff_dict into account: |
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:param file_diff_dict: A dictionary with filenames as key and their |
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associated Diff objects as values. |
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""" |
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diff = file_diff_dict.get(self.file) |
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if diff is None: |
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return self.file |
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return diff.rename if diff.rename is not False else self.file |
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def expand(self, file_contents): |
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""" |
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Passes a new SourceRange that covers the same area of a file as this |
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one would. All values of None get replaced with absolute values. |
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values of None will be interpreted as follows: |
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self.start.line is None: -> 1 |
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self.start.column is None: -> 1 |
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self.end.line is None: -> last line of file |
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self.end.column is None: -> last column of self.end.line |
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:param file_contents: File contents of the applicable file |
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:return: TextRange with absolute values |
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""" |
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tr = TextRange.expand(self, file_contents) |
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return SourceRange.from_values(self.file, |
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tr.start.line, |
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tr.start.column, |
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tr.end.line, |
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tr.end.column) |
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def __json__(self, use_relpath=False): |
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_dict = get_public_members(self) |
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if use_relpath: |
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_dict['file'] = relpath(_dict['file']) |
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return _dict |
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coala-analyzer /
coala
