/
commas.py
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/
commas.py
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# -*- coding: utf-8 -*-
# Copyright (C) 2016 Adrien Vergé
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Use this rule to control the number of spaces before and after commas (``,``).
.. rubric:: Options
* ``max-spaces-before`` defines the maximal number of spaces allowed before
commas (use ``-1`` to disable).
* ``min-spaces-after`` defines the minimal number of spaces required after
commas.
* ``max-spaces-after`` defines the maximal number of spaces allowed after
commas (use ``-1`` to disable).
.. rubric:: Default values (when enabled)
.. code-block:: yaml
rules:
commas:
max-spaces-before: 0
min-spaces-after: 1
max-spaces-after: 1
.. rubric:: Examples
#. With ``commas: {max-spaces-before: 0}``
the following code snippet would **PASS**:
::
strange var:
[10, 20, 30, {x: 1, y: 2}]
the following code snippet would **FAIL**:
::
strange var:
[10, 20 , 30, {x: 1, y: 2}]
#. With ``commas: {max-spaces-before: 2}``
the following code snippet would **PASS**:
::
strange var:
[10 , 20 , 30, {x: 1 , y: 2}]
#. With ``commas: {max-spaces-before: -1}``
the following code snippet would **PASS**:
::
strange var:
[10,
20 , 30
, {x: 1, y: 2}]
#. With ``commas: {min-spaces-after: 1, max-spaces-after: 1}``
the following code snippet would **PASS**:
::
strange var:
[10, 20,30, {x: 1, y: 2}]
the following code snippet would **FAIL**:
::
strange var:
[10, 20,30, {x: 1, y: 2}]
#. With ``commas: {min-spaces-after: 1, max-spaces-after: 3}``
the following code snippet would **PASS**:
::
strange var:
[10, 20, 30, {x: 1, y: 2}]
#. With ``commas: {min-spaces-after: 0, max-spaces-after: 1}``
the following code snippet would **PASS**:
::
strange var:
[10, 20,30, {x: 1, y: 2}]
"""
import yaml
from yamllint.linter import LintProblem
from yamllint.rules.common import spaces_after, spaces_before
ID = 'commas'
TYPE = 'token'
CONF = {'max-spaces-before': int,
'min-spaces-after': int,
'max-spaces-after': int}
DEFAULT = {'max-spaces-before': 0,
'min-spaces-after': 1,
'max-spaces-after': 1}
def check(conf, token, prev, next, nextnext, context):
if isinstance(token, yaml.FlowEntryToken):
if (prev is not None and conf['max-spaces-before'] != -1 and
prev.end_mark.line < token.start_mark.line):
yield LintProblem(token.start_mark.line + 1,
max(1, token.start_mark.column),
'too many spaces before comma')
else:
problem = spaces_before(token, prev, next,
max=conf['max-spaces-before'],
max_desc='too many spaces before comma')
if problem is not None:
yield problem
problem = spaces_after(token, prev, next,
min=conf['min-spaces-after'],
max=conf['max-spaces-after'],
min_desc='too few spaces after comma',
max_desc='too many spaces after comma')
if problem is not None:
yield problem