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from coalib.results.TextPosition import TextPosition |
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from coala_utils.decorators import enforce_signature |
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class AbsolutePosition(TextPosition): |
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@enforce_signature |
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def __init__(self, |
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text: (tuple, list, None)=None, |
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position: (int, None)=None): |
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""" |
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Creates an AbsolutePosition object that represents the index of a |
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character in a string. |
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:param text: The text containing the character. |
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:param position: Position identifying the index of character |
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in text. |
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""" |
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line = column = None |
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if position is not None and text is not None: |
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line, column = calc_line_col(text, position) |
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self._text = text |
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self._position = position |
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super().__init__(line, column) |
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@property |
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def position(self): |
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return self._position |
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def calc_line_col(text, position): |
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r""" |
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Creates a tuple containing (line, column) by calculating line number |
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and column in the text, from position. |
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The position represents the index of a character. In the following |
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example 'a' is at position '0' and it's corresponding line and column are: |
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>>> calc_line_col(('a\n',), 0) |
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(1, 1) |
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All special characters(including the newline character) belong in the same |
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line, and have their own position. A line is an item in the tuple: |
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>>> calc_line_col(('a\n', 'b\n'), 1) |
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(1, 2) |
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>>> calc_line_col(('a\n', 'b\n'), 2) |
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(2, 1) |
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:param text: A tuple/list of lines in which position is to |
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be calculated. |
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:param position: Position (starting from 0) of character to be found |
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in the (line, column) form. |
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:return: A tuple of the form (line, column), where both line |
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and column start from 1. |
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""" |
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for linenum, line in enumerate(text, start=1): |
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linelen = len(line) |
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if position < linelen: |
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return linenum, position + 1 |
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position -= linelen |
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raise ValueError("Position not found in text") |
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coala-analyzer /
coala
