mirror of
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576 lines
19 KiB
Python
576 lines
19 KiB
Python
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# -*- coding: utf-8 -*-
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# Copyright (C) 2016 Adrien Vergé
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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Use this rule to control the indentation.
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.. rubric:: Options
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* ``spaces`` defines the indentation width, in spaces. Set either to an integer
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(e.g. ``2`` or ``4``, representing the number of spaces in an indentation
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level) or to ``consistent`` to allow any number, as long as it remains the
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same within the file.
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* ``indent-sequences`` defines whether block sequences should be indented or
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not (when in a mapping, this indentation is not mandatory -- some people
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perceive the ``-`` as part of the indentation). Possible values: ``true``,
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``false``, ``whatever`` and ``consistent``. ``consistent`` requires either
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all block sequences to be indented, or none to be. ``whatever`` means either
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indenting or not indenting individual block sequences is OK.
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* ``check-multi-line-strings`` defines whether to lint indentation in
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multi-line strings. Set to ``true`` to enable, ``false`` to disable.
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.. rubric:: Examples
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#. With ``indentation: {spaces: 1}``
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the following code snippet would **PASS**:
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::
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history:
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- name: Unix
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date: 1969
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- name: Linux
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date: 1991
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nest:
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recurse:
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- haystack:
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needle
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#. With ``indentation: {spaces: 4}``
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the following code snippet would **PASS**:
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::
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history:
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- name: Unix
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date: 1969
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- name: Linux
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date: 1991
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nest:
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recurse:
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- haystack:
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needle
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the following code snippet would **FAIL**:
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::
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history:
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- name: Unix
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date: 1969
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- name: Linux
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date: 1991
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nest:
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recurse:
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- haystack:
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needle
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#. With ``indentation: {spaces: consistent}``
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the following code snippet would **PASS**:
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::
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history:
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- name: Unix
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date: 1969
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- name: Linux
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date: 1991
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nest:
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recurse:
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- haystack:
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needle
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the following code snippet would **FAIL**:
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::
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some:
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Russian:
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dolls
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#. With ``indentation: {spaces: 2, indent-sequences: false}``
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the following code snippet would **PASS**:
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::
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list:
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- flying
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- spaghetti
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- monster
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the following code snippet would **FAIL**:
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::
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list:
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- flying
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- spaghetti
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- monster
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#. With ``indentation: {spaces: 2, indent-sequences: whatever}``
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the following code snippet would **PASS**:
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::
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list:
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- flying:
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- spaghetti
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- monster
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- not flying:
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- spaghetti
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- sauce
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#. With ``indentation: {spaces: 2, indent-sequences: consistent}``
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the following code snippet would **PASS**:
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::
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- flying:
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- spaghetti
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- monster
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- not flying:
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- spaghetti
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- sauce
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the following code snippet would **FAIL**:
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::
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- flying:
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- spaghetti
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- monster
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- not flying:
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- spaghetti
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- sauce
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#. With ``indentation: {spaces: 4, check-multi-line-strings: true}``
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the following code snippet would **PASS**:
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::
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Blaise Pascal:
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Je vous écris une longue lettre parce que
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je n'ai pas le temps d'en écrire une courte.
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the following code snippet would **PASS**:
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::
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Blaise Pascal: Je vous écris une longue lettre parce que
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je n'ai pas le temps d'en écrire une courte.
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the following code snippet would **FAIL**:
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::
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Blaise Pascal: Je vous écris une longue lettre parce que
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je n'ai pas le temps d'en écrire une courte.
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the following code snippet would **FAIL**:
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::
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C code:
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void main() {
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printf("foo");
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}
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the following code snippet would **PASS**:
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::
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C code:
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void main() {
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printf("bar");
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}
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"""
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import yaml
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from yamllint.linter import LintProblem
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from yamllint.rules.common import is_explicit_key, get_real_end_line
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ID = 'indentation'
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TYPE = 'token'
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CONF = {'spaces': (int, 'consistent'),
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'indent-sequences': (bool, 'whatever', 'consistent'),
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'check-multi-line-strings': bool}
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DEFAULT = {'spaces': 'consistent',
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'indent-sequences': True,
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'check-multi-line-strings': False}
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ROOT, B_MAP, F_MAP, B_SEQ, F_SEQ, B_ENT, KEY, VAL = range(8)
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labels = ('ROOT', 'B_MAP', 'F_MAP', 'B_SEQ', 'F_SEQ', 'B_ENT', 'KEY', 'VAL')
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class Parent(object):
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def __init__(self, type, indent, line_indent=None):
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self.type = type
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self.indent = indent
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self.line_indent = line_indent
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self.explicit_key = False
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self.implicit_block_seq = False
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def __repr__(self):
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return '%s:%d' % (labels[self.type], self.indent)
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def check_scalar_indentation(conf, token, context):
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if token.start_mark.line == token.end_mark.line:
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return
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def compute_expected_indent(found_indent):
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def detect_indent(base_indent):
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if not isinstance(context['spaces'], int):
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context['spaces'] = found_indent - base_indent
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return base_indent + context['spaces']
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if token.plain:
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return token.start_mark.column
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elif token.style in ('"', "'"):
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return token.start_mark.column + 1
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elif token.style in ('>', '|'):
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if context['stack'][-1].type == B_ENT:
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# - >
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# multi
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# line
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return detect_indent(token.start_mark.column)
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elif context['stack'][-1].type == KEY:
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assert context['stack'][-1].explicit_key
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# - ? >
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# multi-line
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# key
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# : >
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# multi-line
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# value
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return detect_indent(token.start_mark.column)
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elif context['stack'][-1].type == VAL:
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if token.start_mark.line + 1 > context['cur_line']:
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# - key:
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# >
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# multi
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# line
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return detect_indent(context['stack'][-1].indent)
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elif context['stack'][-2].explicit_key:
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# - ? key
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# : >
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# multi-line
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# value
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return detect_indent(token.start_mark.column)
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else:
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# - key: >
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# multi
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# line
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return detect_indent(context['stack'][-2].indent)
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else:
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return detect_indent(context['stack'][-1].indent)
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expected_indent = None
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line_no = token.start_mark.line + 1
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line_start = token.start_mark.pointer
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while True:
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line_start = token.start_mark.buffer.find(
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'\n', line_start, token.end_mark.pointer - 1) + 1
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if line_start == 0:
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break
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line_no += 1
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indent = 0
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while token.start_mark.buffer[line_start + indent] == ' ':
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indent += 1
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if token.start_mark.buffer[line_start + indent] == '\n':
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continue
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if expected_indent is None:
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expected_indent = compute_expected_indent(indent)
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if indent != expected_indent:
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yield LintProblem(line_no, indent + 1,
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'wrong indentation: expected %d but found %d' %
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(expected_indent, indent))
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def _check(conf, token, prev, next, nextnext, context):
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if 'stack' not in context:
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context['stack'] = [Parent(ROOT, 0)]
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context['cur_line'] = -1
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context['spaces'] = conf['spaces']
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context['indent-sequences'] = conf['indent-sequences']
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# Step 1: Lint
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is_visible = (
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not isinstance(token, (yaml.StreamStartToken, yaml.StreamEndToken)) and
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not isinstance(token, yaml.BlockEndToken) and
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not (isinstance(token, yaml.ScalarToken) and token.value == ''))
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first_in_line = (is_visible and
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token.start_mark.line + 1 > context['cur_line'])
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def detect_indent(base_indent, next):
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if not isinstance(context['spaces'], int):
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context['spaces'] = next.start_mark.column - base_indent
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return base_indent + context['spaces']
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if first_in_line:
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found_indentation = token.start_mark.column
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expected = context['stack'][-1].indent
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if isinstance(token, (yaml.FlowMappingEndToken,
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yaml.FlowSequenceEndToken)):
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expected = context['stack'][-1].line_indent
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elif (context['stack'][-1].type == KEY and
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context['stack'][-1].explicit_key and
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not isinstance(token, yaml.ValueToken)):
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expected = detect_indent(expected, token)
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if found_indentation != expected:
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yield LintProblem(token.start_mark.line + 1, found_indentation + 1,
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'wrong indentation: expected %d but found %d' %
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(expected, found_indentation))
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if (isinstance(token, yaml.ScalarToken) and
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conf['check-multi-line-strings']):
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for problem in check_scalar_indentation(conf, token, context):
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yield problem
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# Step 2.a:
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if is_visible:
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context['cur_line'] = get_real_end_line(token)
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if first_in_line:
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context['cur_line_indent'] = found_indentation
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# Step 2.b: Update state
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if isinstance(token, yaml.BlockMappingStartToken):
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# - a: 1
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# or
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# - ? a
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# : 1
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# or
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# - ?
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# a
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# : 1
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assert isinstance(next, yaml.KeyToken)
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assert next.start_mark.line == token.start_mark.line
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indent = token.start_mark.column
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context['stack'].append(Parent(B_MAP, indent))
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elif isinstance(token, yaml.FlowMappingStartToken):
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if next.start_mark.line == token.start_mark.line:
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# - {a: 1, b: 2}
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indent = next.start_mark.column
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else:
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# - {
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# a: 1, b: 2
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# }
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indent = detect_indent(context['cur_line_indent'], next)
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context['stack'].append(Parent(F_MAP, indent,
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line_indent=context['cur_line_indent']))
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elif isinstance(token, yaml.BlockSequenceStartToken):
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# - - a
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# - b
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assert isinstance(next, yaml.BlockEntryToken)
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assert next.start_mark.line == token.start_mark.line
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indent = token.start_mark.column
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context['stack'].append(Parent(B_SEQ, indent))
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elif (isinstance(token, yaml.BlockEntryToken) and
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# in case of an empty entry
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not isinstance(next, (yaml.BlockEntryToken, yaml.BlockEndToken))):
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# It looks like pyyaml doesn't issue BlockSequenceStartTokens when the
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# list is not indented. We need to compensate that.
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if context['stack'][-1].type != B_SEQ:
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context['stack'].append(Parent(B_SEQ, token.start_mark.column))
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context['stack'][-1].implicit_block_seq = True
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if next.start_mark.line == token.end_mark.line:
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# - item 1
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# - item 2
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indent = next.start_mark.column
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elif next.start_mark.column == token.start_mark.column:
|
||
|
|
# -
|
||
|
|
# key: value
|
||
|
|
indent = next.start_mark.column
|
||
|
|
else:
|
||
|
|
# -
|
||
|
|
# item 1
|
||
|
|
# -
|
||
|
|
# key:
|
||
|
|
# value
|
||
|
|
indent = detect_indent(token.start_mark.column, next)
|
||
|
|
|
||
|
|
context['stack'].append(Parent(B_ENT, indent))
|
||
|
|
|
||
|
|
elif isinstance(token, yaml.FlowSequenceStartToken):
|
||
|
|
if next.start_mark.line == token.start_mark.line:
|
||
|
|
# - [a, b]
|
||
|
|
indent = next.start_mark.column
|
||
|
|
else:
|
||
|
|
# - [
|
||
|
|
# a, b
|
||
|
|
# ]
|
||
|
|
indent = detect_indent(context['cur_line_indent'], next)
|
||
|
|
|
||
|
|
context['stack'].append(Parent(F_SEQ, indent,
|
||
|
|
line_indent=context['cur_line_indent']))
|
||
|
|
|
||
|
|
elif isinstance(token, yaml.KeyToken):
|
||
|
|
indent = context['stack'][-1].indent
|
||
|
|
|
||
|
|
context['stack'].append(Parent(KEY, indent))
|
||
|
|
|
||
|
|
context['stack'][-1].explicit_key = is_explicit_key(token)
|
||
|
|
|
||
|
|
elif isinstance(token, yaml.ValueToken):
|
||
|
|
assert context['stack'][-1].type == KEY
|
||
|
|
|
||
|
|
# Special cases:
|
||
|
|
# key: &anchor
|
||
|
|
# value
|
||
|
|
# and:
|
||
|
|
# key: !!tag
|
||
|
|
# value
|
||
|
|
if isinstance(next, (yaml.AnchorToken, yaml.TagToken)):
|
||
|
|
if (next.start_mark.line == prev.start_mark.line and
|
||
|
|
next.start_mark.line < nextnext.start_mark.line):
|
||
|
|
next = nextnext
|
||
|
|
|
||
|
|
# Only if value is not empty
|
||
|
|
if not isinstance(next, (yaml.BlockEndToken,
|
||
|
|
yaml.FlowMappingEndToken,
|
||
|
|
yaml.FlowSequenceEndToken,
|
||
|
|
yaml.KeyToken)):
|
||
|
|
if context['stack'][-1].explicit_key:
|
||
|
|
# ? k
|
||
|
|
# : value
|
||
|
|
# or
|
||
|
|
# ? k
|
||
|
|
# :
|
||
|
|
# value
|
||
|
|
indent = detect_indent(context['stack'][-1].indent, next)
|
||
|
|
elif next.start_mark.line == prev.start_mark.line:
|
||
|
|
# k: value
|
||
|
|
indent = next.start_mark.column
|
||
|
|
elif isinstance(next, (yaml.BlockSequenceStartToken,
|
||
|
|
yaml.BlockEntryToken)):
|
||
|
|
# NOTE: We add BlockEntryToken in the test above because
|
||
|
|
# sometimes BlockSequenceStartToken are not issued. Try
|
||
|
|
# yaml.scan()ning this:
|
||
|
|
# '- lib:\n'
|
||
|
|
# ' - var\n'
|
||
|
|
if context['indent-sequences'] is False:
|
||
|
|
indent = context['stack'][-1].indent
|
||
|
|
elif context['indent-sequences'] is True:
|
||
|
|
if (context['spaces'] == 'consistent' and
|
||
|
|
next.start_mark.column -
|
||
|
|
context['stack'][-1].indent == 0):
|
||
|
|
# In this case, the block sequence item is not indented
|
||
|
|
# (while it should be), but we don't know yet the
|
||
|
|
# indentation it should have (because `spaces` is
|
||
|
|
# `consistent` and its value has not been computed yet
|
||
|
|
# -- this is probably the beginning of the document).
|
||
|
|
# So we choose an arbitrary value (2).
|
||
|
|
indent = 2
|
||
|
|
else:
|
||
|
|
indent = detect_indent(context['stack'][-1].indent,
|
||
|
|
next)
|
||
|
|
else: # 'whatever' or 'consistent'
|
||
|
|
if next.start_mark.column == context['stack'][-1].indent:
|
||
|
|
# key:
|
||
|
|
# - e1
|
||
|
|
# - e2
|
||
|
|
if context['indent-sequences'] == 'consistent':
|
||
|
|
context['indent-sequences'] = False
|
||
|
|
indent = context['stack'][-1].indent
|
||
|
|
else:
|
||
|
|
if context['indent-sequences'] == 'consistent':
|
||
|
|
context['indent-sequences'] = True
|
||
|
|
# key:
|
||
|
|
# - e1
|
||
|
|
# - e2
|
||
|
|
indent = detect_indent(context['stack'][-1].indent,
|
||
|
|
next)
|
||
|
|
else:
|
||
|
|
# k:
|
||
|
|
# value
|
||
|
|
indent = detect_indent(context['stack'][-1].indent, next)
|
||
|
|
|
||
|
|
context['stack'].append(Parent(VAL, indent))
|
||
|
|
|
||
|
|
consumed_current_token = False
|
||
|
|
while True:
|
||
|
|
if (context['stack'][-1].type == F_SEQ and
|
||
|
|
isinstance(token, yaml.FlowSequenceEndToken) and
|
||
|
|
not consumed_current_token):
|
||
|
|
context['stack'].pop()
|
||
|
|
consumed_current_token = True
|
||
|
|
|
||
|
|
elif (context['stack'][-1].type == F_MAP and
|
||
|
|
isinstance(token, yaml.FlowMappingEndToken) and
|
||
|
|
not consumed_current_token):
|
||
|
|
context['stack'].pop()
|
||
|
|
consumed_current_token = True
|
||
|
|
|
||
|
|
elif (context['stack'][-1].type in (B_MAP, B_SEQ) and
|
||
|
|
isinstance(token, yaml.BlockEndToken) and
|
||
|
|
not context['stack'][-1].implicit_block_seq and
|
||
|
|
not consumed_current_token):
|
||
|
|
context['stack'].pop()
|
||
|
|
consumed_current_token = True
|
||
|
|
|
||
|
|
elif (context['stack'][-1].type == B_ENT and
|
||
|
|
not isinstance(token, yaml.BlockEntryToken) and
|
||
|
|
context['stack'][-2].implicit_block_seq and
|
||
|
|
not isinstance(token, (yaml.AnchorToken, yaml.TagToken)) and
|
||
|
|
not isinstance(next, yaml.BlockEntryToken)):
|
||
|
|
context['stack'].pop()
|
||
|
|
context['stack'].pop()
|
||
|
|
|
||
|
|
elif (context['stack'][-1].type == B_ENT and
|
||
|
|
isinstance(next, (yaml.BlockEntryToken, yaml.BlockEndToken))):
|
||
|
|
context['stack'].pop()
|
||
|
|
|
||
|
|
elif (context['stack'][-1].type == VAL and
|
||
|
|
not isinstance(token, yaml.ValueToken) and
|
||
|
|
not isinstance(token, (yaml.AnchorToken, yaml.TagToken))):
|
||
|
|
assert context['stack'][-2].type == KEY
|
||
|
|
context['stack'].pop()
|
||
|
|
context['stack'].pop()
|
||
|
|
|
||
|
|
elif (context['stack'][-1].type == KEY and
|
||
|
|
isinstance(next, (yaml.BlockEndToken,
|
||
|
|
yaml.FlowMappingEndToken,
|
||
|
|
yaml.FlowSequenceEndToken,
|
||
|
|
yaml.KeyToken))):
|
||
|
|
# A key without a value: it's part of a set. Let's drop this key
|
||
|
|
# and leave room for the next one.
|
||
|
|
context['stack'].pop()
|
||
|
|
|
||
|
|
else:
|
||
|
|
break
|
||
|
|
|
||
|
|
|
||
|
|
def check(conf, token, prev, next, nextnext, context):
|
||
|
|
try:
|
||
|
|
for problem in _check(conf, token, prev, next, nextnext, context):
|
||
|
|
yield problem
|
||
|
|
except AssertionError:
|
||
|
|
yield LintProblem(token.start_mark.line + 1,
|
||
|
|
token.start_mark.column + 1,
|
||
|
|
'cannot infer indentation: unexpected token')
|