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import inspect |
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from collections import OrderedDict |
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from coalib.misc.Enum import enum |
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class DocstringMetadata: |
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_ParseMode = enum("DESCRIPTION", "PARAM", "RETVAL") |
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def __init__(self, desc, param_dict, retval_desc): |
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""" |
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Represents a docstring of a python class or function. |
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:param desc: A description as string. |
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:param param_dict: A dictionary containing parameter names as key and |
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their description as value. To preserve the order, |
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use OrderedDict. |
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:param retval_desc: A string describing the return value. |
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""" |
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self.desc = desc |
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self.param_dict = param_dict |
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self.retval_desc = retval_desc |
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@classmethod |
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def from_docstring(cls, docstring): |
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""" |
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Parses a python docstring. Usable attributes are: |
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:param |
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@param |
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:return |
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@return |
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""" |
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lines = inspect.cleandoc(docstring).split("\n") |
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parse_mode = cls._ParseMode.DESCRIPTION |
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cur_param = "" |
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desc = "" |
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param_dict = OrderedDict() |
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retval_desc = "" |
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for line in lines: |
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line = line.strip() |
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if line.startswith(":param ") or line.startswith("@param "): |
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parse_mode = cls._ParseMode.PARAM |
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splitted = line[7:].split(":", 1) |
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cur_param = splitted[0] |
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param_dict[cur_param] = splitted[1].strip() |
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continue |
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if line.startswith(":return: ") or line.startswith("@return: "): |
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parse_mode = cls._ParseMode.RETVAL |
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retval_desc = line[9:].strip() |
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continue |
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def concat_doc_parts(old: str, new: str): |
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if new != '' and not old.endswith('\n'): |
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return old + ' ' + new |
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return old + (new if new != '' else '\n') |
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if parse_mode == cls._ParseMode.RETVAL: |
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retval_desc = concat_doc_parts(retval_desc, line) |
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elif parse_mode == cls._ParseMode.PARAM: |
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param_dict[cur_param] = concat_doc_parts(param_dict[cur_param], |
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line) |
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else: |
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desc = concat_doc_parts(desc, line) |
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return (cls(desc=desc.strip(), |
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param_dict=param_dict, |
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retval_desc=retval_desc.strip())) |
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def __str__(self): |
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return str(self.desc) |
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coala-analyzer /
coala
