1 files changed, 145 insertions, 0 deletions
diff --git a/third_party/python/yamllint/yamllint/rules/brackets.py b/third_party/python/yamllint/yamllint/rules/brackets.py
new file mode 100644
index 0000000000..b54c5154aa
--- /dev/null
+++ b/third_party/python/yamllint/yamllint/rules/brackets.py
@@ -0,0 +1,145 @@
+# -*- 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 inside brackets (``[`` and
+``]``).
+
+.. rubric:: Options
+
+* ``min-spaces-inside`` defines the minimal number of spaces required inside
+  brackets.
+* ``max-spaces-inside`` defines the maximal number of spaces allowed inside
+  brackets.
+* ``min-spaces-inside-empty`` defines the minimal number of spaces required
+  inside empty brackets.
+* ``max-spaces-inside-empty`` defines the maximal number of spaces allowed
+  inside empty brackets.
+
+.. rubric:: Examples
+
+#. With ``brackets: {min-spaces-inside: 0, max-spaces-inside: 0}``
+
+   the following code snippet would **PASS**:
+   ::
+
+    object: [1, 2, abc]
+
+   the following code snippet would **FAIL**:
+   ::
+
+    object: [ 1, 2, abc ]
+
+#. With ``brackets: {min-spaces-inside: 1, max-spaces-inside: 3}``
+
+   the following code snippet would **PASS**:
+   ::
+
+    object: [ 1, 2, abc ]
+
+   the following code snippet would **PASS**:
+   ::
+
+    object: [ 1, 2, abc   ]
+
+   the following code snippet would **FAIL**:
+   ::
+
+    object: [    1, 2, abc   ]
+
+   the following code snippet would **FAIL**:
+   ::
+
+    object: [1, 2, abc ]
+
+#. With ``brackets: {min-spaces-inside-empty: 0, max-spaces-inside-empty: 0}``
+
+   the following code snippet would **PASS**:
+   ::
+
+    object: []
+
+   the following code snippet would **FAIL**:
+   ::
+
+    object: [ ]
+
+#. With ``brackets: {min-spaces-inside-empty: 1, max-spaces-inside-empty: -1}``
+
+   the following code snippet would **PASS**:
+   ::
+
+    object: [         ]
+
+   the following code snippet would **FAIL**:
+   ::
+
+    object: []
+"""
+
+
+import yaml
+
+from yamllint.rules.common import spaces_after, spaces_before
+
+
+ID = 'brackets'
+TYPE = 'token'
+CONF = {'min-spaces-inside': int,
+        'max-spaces-inside': int,
+        'min-spaces-inside-empty': int,
+        'max-spaces-inside-empty': int}
+DEFAULT = {'min-spaces-inside': 0,
+           'max-spaces-inside': 0,
+           'min-spaces-inside-empty': -1,
+           'max-spaces-inside-empty': -1}
+
+
+def check(conf, token, prev, next, nextnext, context):
+    if (isinstance(token, yaml.FlowSequenceStartToken) and
+            isinstance(next, yaml.FlowSequenceEndToken)):
+        problem = spaces_after(token, prev, next,
+                               min=(conf['min-spaces-inside-empty']
+                                    if conf['min-spaces-inside-empty'] != -1
+                                    else conf['min-spaces-inside']),
+                               max=(conf['max-spaces-inside-empty']
+                                    if conf['max-spaces-inside-empty'] != -1
+                                    else conf['max-spaces-inside']),
+                               min_desc='too few spaces inside empty brackets',
+                               max_desc=('too many spaces inside empty '
+                                         'brackets'))
+        if problem is not None:
+            yield problem
+
+    elif isinstance(token, yaml.FlowSequenceStartToken):
+        problem = spaces_after(token, prev, next,
+                               min=conf['min-spaces-inside'],
+                               max=conf['max-spaces-inside'],
+                               min_desc='too few spaces inside brackets',
+                               max_desc='too many spaces inside brackets')
+        if problem is not None:
+            yield problem
+
+    elif (isinstance(token, yaml.FlowSequenceEndToken) and
+            (prev is None or
+             not isinstance(prev, yaml.FlowSequenceStartToken))):
+        problem = spaces_before(token, prev, next,
+                                min=conf['min-spaces-inside'],
+                                max=conf['max-spaces-inside'],
+                                min_desc='too few spaces inside brackets',
+                                max_desc='too many spaces inside brackets')
+        if problem is not None:
+            yield problem