116 lines
3.7 KiB
Python
116 lines
3.7 KiB
Python
# Copyright (c) 2007, 2010, 2013, 2015 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
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# Copyright (c) 2015-2016 Claudiu Popa <pcmanticore@gmail.com>
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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
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""" Copyright (c) 2003-2010 LOGILAB S.A. (Paris, FRANCE).
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http://www.logilab.fr/ -- mailto:contact@logilab.fr
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Raw metrics checker
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"""
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import tokenize
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from pylint.interfaces import ITokenChecker
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from pylint.exceptions import EmptyReportError
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from pylint.checkers import BaseTokenChecker
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from pylint.reporters import diff_string
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from pylint.reporters.ureports.nodes import Table
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def report_raw_stats(sect, stats, old_stats):
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"""calculate percentage of code / doc / comment / empty
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"""
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total_lines = stats['total_lines']
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if not total_lines:
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raise EmptyReportError()
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sect.description = '%s lines have been analyzed' % total_lines
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lines = ('type', 'number', '%', 'previous', 'difference')
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for node_type in ('code', 'docstring', 'comment', 'empty'):
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key = node_type + '_lines'
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total = stats[key]
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percent = float(total * 100) / total_lines
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old = old_stats.get(key, None)
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if old is not None:
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diff_str = diff_string(old, total)
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else:
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old, diff_str = 'NC', 'NC'
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lines += (node_type, str(total), '%.2f' % percent,
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str(old), diff_str)
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sect.append(Table(children=lines, cols=5, rheaders=1))
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class RawMetricsChecker(BaseTokenChecker):
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"""does not check anything but gives some raw metrics :
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* total number of lines
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* total number of code lines
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* total number of docstring lines
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* total number of comments lines
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* total number of empty lines
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"""
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__implements__ = (ITokenChecker,)
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# configuration section name
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name = 'metrics'
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# configuration options
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options = ()
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# messages
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msgs = {}
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# reports
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reports = (('RP0701', 'Raw metrics', report_raw_stats),)
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def __init__(self, linter):
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BaseTokenChecker.__init__(self, linter)
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self.stats = None
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def open(self):
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"""init statistics"""
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self.stats = self.linter.add_stats(total_lines=0, code_lines=0,
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empty_lines=0, docstring_lines=0,
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comment_lines=0)
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def process_tokens(self, tokens):
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"""update stats"""
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i = 0
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tokens = list(tokens)
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while i < len(tokens):
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i, lines_number, line_type = get_type(tokens, i)
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self.stats['total_lines'] += lines_number
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self.stats[line_type] += lines_number
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JUNK = (tokenize.NL, tokenize.INDENT, tokenize.NEWLINE, tokenize.ENDMARKER)
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def get_type(tokens, start_index):
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"""return the line type : docstring, comment, code, empty"""
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i = start_index
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tok_type = tokens[i][0]
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start = tokens[i][2]
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pos = start
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line_type = None
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while i < len(tokens) and tokens[i][2][0] == start[0]:
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tok_type = tokens[i][0]
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pos = tokens[i][3]
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if line_type is None:
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if tok_type == tokenize.STRING:
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line_type = 'docstring_lines'
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elif tok_type == tokenize.COMMENT:
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line_type = 'comment_lines'
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elif tok_type in JUNK:
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pass
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else:
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line_type = 'code_lines'
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i += 1
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if line_type is None:
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line_type = 'empty_lines'
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elif i < len(tokens) and tokens[i][0] == tokenize.NEWLINE:
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i += 1
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return i, pos[0] - start[0] + 1, line_type
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def register(linter):
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""" required method to auto register this checker """
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linter.register_checker(RawMetricsChecker(linter))
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