yamllint version 0.3.0

Using either 'yes', 'no' or 'whatever', the user will be able to choose
whether to force block sequence items to be indented, to force them not
to be indented, or don't care, respectively.

README.md

@@ -4,3 +4,63 @@ A linter for YAML files.
 
 [![Build Status](https://travis-ci.org/adrienverge/yamllint.svg?branch=master)](https://travis-ci.org/adrienverge/yamllint)
 [![Coverage Status](https://coveralls.io/repos/adrienverge/yamllint/badge.svg?branch=master&service=github)](https://coveralls.io/github/adrienverge/yamllint?branch=master)
+
+Compatible with Python 2 & 3.
+
+## Usage
+
+```sh
+yamllint my_file.yml my_other_file.yaml ...
+```
+
+```sh
+yamllint -c ~/myconfig my_file.yml
+```
+
+```sh
+# To output a format parsable (by editors like Vim, emacs, etc.)
+yamllint -f parsable my_file.yml
+```
+
+## Installation
+
+```sh
+pip install yamllint
+```
+
+## Configuration
+
+There is no documentation yet, so here is what you need to know: you can
+override some rules, disable them or pass them in *warning* (instead of
+*error*). Have a look at the content of `yamllint/conf/default.yml` and create
+your own configuration file.
+
+It could look like this:
+
+```yaml
+# This is my first, very own configuration file for yamllint!
+# It extends the default conf by adjusting some options.
+
+extends: default
+
+rules:
+  # 80 should be enough, but don't fail if a line is longer
+  line-length:
+    max: 80
+    level: warning
+
+  # accept both
+  #    key:
+  #      - item
+  # and
+  #    key:
+  #    - item
+  indentation:
+    indent-sequences: whatever
+
+  # don't bother me with this rule
+  comments-indentation: disable
+```
+
+Tip: if you have a `.yamllint` file in your working directory, it will be
+automatically loaded as configuration by yamllint.

tests/rules/common.py

@@ -33,12 +33,19 @@ class RuleTestCase(unittest.TestCase):
                 'rules': conf}
         return parse_config(yaml.safe_dump(conf))
 
-    def check(self, source, conf, line=None, column=None, **kwargs):
+    def check(self, source, conf, **kwargs):
         expected_problems = []
         for key in kwargs:
             assert key.startswith('problem')
+            if len(kwargs[key]) > 2:
+                if kwargs[key][2] == 'syntax':
+                    rule_id = None
+                else:
+                    rule_id = kwargs[key][2]
+            else:
+                rule_id = self.rule_id
             expected_problems.append(
-                LintProblem(kwargs[key][0], kwargs[key][1], rule=self.rule_id))
+                LintProblem(kwargs[key][0], kwargs[key][1], rule=rule_id))
         expected_problems.sort()
 
         real_problems = list(lint(source, self.build_fake_config(conf)))

tests/rules/test_colons.py

@@ -42,7 +42,7 @@ class ColonTestCase(RuleTestCase):
                    '    - p: kdjf\n'
                    '    - q: val0\n'
                    '    - q2:\n'
-                   '      - val1\n'
+                   '        - val1\n'
                    '...\n', conf)
         self.check('---\n'
                    'object:\n'
@@ -67,7 +67,7 @@ class ColonTestCase(RuleTestCase):
                    '    - o: {k1: v1}\n'
                    '    - o:  {k1: v1}\n'
                    '    - q2:\n'
-                   '      - val1\n'
+                   '        - val1\n'
                    '...\n', conf)
         self.check('---\n'
                    'a: {b: {c:  d, e : f}}\n', conf)
@@ -94,7 +94,7 @@ class ColonTestCase(RuleTestCase):
                    '...\n', conf, problem=(2, 4))
         self.check('---\n'
                    '- lib :\n'
-                   '  - var\n'
+                   '    - var\n'
                    '...\n', conf, problem=(2, 6))
         self.check('---\n'
                    'a: {b: {c : d, e : f}}\n', conf,
@@ -152,6 +152,21 @@ class ColonTestCase(RuleTestCase):
                    'a: {b: {c:  d, e :  f}}\n', conf,
                    problem1=(2, 12), problem2=(2, 20))
 
+    def test_after_enabled_question_mark(self):
+        conf = 'colons: {max-spaces-before: -1, max-spaces-after: 1}'
+        self.check('---\n'
+                   '? key\n'
+                   ': value\n', conf)
+        self.check('---\n'
+                   '?  key\n'
+                   ': value\n', conf, problem=(2, 3))
+        self.check('---\n'
+                   '?  key\n'
+                   ':  value\n', conf, problem1=(2, 3), problem2=(3, 3))
+        self.check('---\n'
+                   '- ?  key\n'
+                   '  :  value\n', conf, problem1=(2, 5), problem2=(3, 5))
+
     def test_after_max(self):
         conf = 'colons: {max-spaces-before: -1, max-spaces-after: 3}'
         self.check('---\n'

tests/rules/test_commas.py

@@ -152,3 +152,36 @@ class CommaTestCase(RuleTestCase):
                    problem1=(2, 12), problem2=(2, 16), problem3=(2, 31),
                    problem4=(2, 36), problem5=(2, 50), problem6=(4, 8),
                    problem7=(5, 11), problem8=(8, 13))
+
+    def test_comma_on_new_line(self):
+        conf = 'commas: {max-spaces-before: 0, max-spaces-after: 1}'
+        self.check('---\n'
+                   'flow-seq: [1, 2, 3\n'
+                   '           , 4, 5, 6]\n'
+                   '...\n', conf, problem=(3, 11))
+        self.check('---\n'
+                   'flow-map: {a: 1, b: 2\n'
+                   '           , c: 3}\n'
+                   '...\n', conf, problem=(3, 11))
+        conf = ('commas: {max-spaces-before: 0, max-spaces-after: 1}\n'
+                'indentation: disable\n')
+        self.check('---\n'
+                   'flow-seq: [1, 2, 3\n'
+                   '         , 4, 5, 6]\n'
+                   '...\n', conf, problem=(3, 9))
+        self.check('---\n'
+                   'flow-map: {a: 1, b: 2\n'
+                   '         , c: 3}\n'
+                   '...\n', conf, problem=(3, 9))
+        self.check('---\n'
+                   '[\n'
+                   '1,\n'
+                   '2\n'
+                   ', 3\n'
+                   ']\n', conf, problem=(5, 1))
+        self.check('---\n'
+                   '{\n'
+                   'a: 1,\n'
+                   'b: 2\n'
+                   ', c: 3\n'
+                   '}\n', conf, problem=(5, 1))

tests/rules/test_comments_indentation.py

@@ -88,15 +88,39 @@ class CommentsIndentationTestCase(RuleTestCase):
         self.check('---\n'
                    'obj1:\n'
                    '  a: 1\n'
-                   '  # comments\n'
+                   '  # the following line is disabled\n'
+                   '  # b: 2\n', conf)
+        self.check('---\n'
+                   'obj1:\n'
+                   '  a: 1\n'
+                   '  # b: 2\n'
                    '\n'
                    'obj2:\n'
-                   '  b: 2\n', conf, problem=(4, 3))
+                   '  b: 2\n', conf)
+        self.check('---\n'
+                   'obj1:\n'
+                   '  a: 1\n'
+                   '  # b: 2\n'
+                   '# this object is useless\n'
+                   'obj2: no\n', conf)
+        self.check('---\n'
+                   'obj1:\n'
+                   '  a: 1\n'
+                   '# this object is useless\n'
+                   '  # b: 2\n'
+                   'obj2: no\n', conf, problem=(5, 3))
         self.check('---\n'
                    'obj1:\n'
                    '  a: 1\n'
                    '  # comments\n'
                    '  b: 2\n', conf)
+        self.check('---\n'
+                   'my list for today:\n'
+                   '  - todo 1\n'
+                   '  - todo 2\n'
+                   '  # commented for now\n'
+                   '  # - todo 3\n'
+                   '...\n', conf)
 
     def test_first_line(self):
         conf = 'comments-indentation: {}'

tests/rules/test_common.py

@@ -18,10 +18,32 @@ import unittest
 
 import yaml
 
-from yamllint.rules.common import Comment, get_comments_between_tokens
+from yamllint.rules.common import (Comment, get_line_indent,
+                                   get_comments_between_tokens)
 
 
 class CommonTestCase(unittest.TestCase):
+    def test_get_line_indent(self):
+        tokens = list(yaml.scan('a: 1\n'
+                                'b:\n'
+                                '  - c: [2, 3, {d: 4}]\n'))
+
+        self.assertEqual(tokens[3].value, 'a')
+        self.assertEqual(tokens[5].value, '1')
+        self.assertEqual(tokens[7].value, 'b')
+        self.assertEqual(tokens[13].value, 'c')
+        self.assertEqual(tokens[16].value, '2')
+        self.assertEqual(tokens[18].value, '3')
+        self.assertEqual(tokens[22].value, 'd')
+        self.assertEqual(tokens[24].value, '4')
+
+        for i in (3, 5):
+            self.assertEqual(get_line_indent(tokens[i]), 0)
+        for i in (7,):
+            self.assertEqual(get_line_indent(tokens[i]), 0)
+        for i in (13, 16, 18, 22, 24):
+            self.assertEqual(get_line_indent(tokens[i]), 2)
+
     def check_comments(self, buffer, *expected):
         yaml_loader = yaml.BaseLoader(buffer)
 

tests/rules/test_document_start.py

@@ -82,7 +82,7 @@ class DocumentStartTestCase(RuleTestCase):
                    '...\n'
                    'second: document\n'
                    '---\n'
-                   'third: document\n', conf, problem=(4, 1))
+                   'third: document\n', conf, problem=(4, 1, 'syntax'))
 
     def test_directives(self):
         conf = 'document-start: {present: yes}'

tests/rules/test_hyphens.py

@@ -36,12 +36,12 @@ class HyphenTestCase(RuleTestCase):
                    '- elem2\n', conf)
         self.check('---\n'
                    'object:\n'
-                   '- elem1\n'
-                   '-  elem2\n', conf)
+                   '  - elem1\n'
+                   '  -  elem2\n', conf)
         self.check('---\n'
                    'object:\n'
-                   '-  elem1\n'
-                   '-  elem2\n', conf)
+                   '  -  elem1\n'
+                   '  -  elem2\n', conf)
         self.check('---\n'
                    'object:\n'
                    '  subobject:\n'
@@ -69,12 +69,12 @@ class HyphenTestCase(RuleTestCase):
                    '- elem2\n', conf, problem=(2, 3))
         self.check('---\n'
                    'object:\n'
-                   '- elem1\n'
-                   '-  elem2\n', conf, problem=(4, 3))
+                   '  - elem1\n'
+                   '  -  elem2\n', conf, problem=(4, 5))
         self.check('---\n'
                    'object:\n'
-                   '-  elem1\n'
-                   '-  elem2\n', conf, problem1=(3, 3), problem2=(4, 3))
+                   '  -  elem1\n'
+                   '  -  elem2\n', conf, problem1=(3, 5), problem2=(4, 5))
         self.check('---\n'
                    'object:\n'
                    '  subobject:\n'

tests/rules/test_indentation.py

@@ -48,37 +48,205 @@ class IndentationTestCase(RuleTestCase):
                    '...\n', conf)
 
     def test_one_space(self):
-        conf = 'indentation: {spaces: 1}'
+        conf = 'indentation: {spaces: 1, indent-sequences: no}'
+        self.check('---\n'
+                   'object:\n'
+                   ' k1:\n'
+                   ' - a\n'
+                   ' - b\n'
+                   ' k2: v2\n'
+                   ' k3:\n'
+                   ' - name: Unix\n'
+                   '   date: 1969\n'
+                   ' - name: Linux\n'
+                   '   date: 1991\n'
+                   '...\n', conf)
+        conf = 'indentation: {spaces: 1, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    ' k1:\n'
                    '  - a\n'
                    '  - b\n'
                    ' k2: v2\n'
+                   ' k3:\n'
+                   '  - name: Unix\n'
+                   '    date: 1969\n'
+                   '  - name: Linux\n'
+                   '    date: 1991\n'
                    '...\n', conf)
 
     def test_two_spaces(self):
-        conf = 'indentation: {spaces: 2}'
+        conf = 'indentation: {spaces: 2, indent-sequences: no}'
+        self.check('---\n'
+                   'object:\n'
+                   '  k1:\n'
+                   '  - a\n'
+                   '  - b\n'
+                   '  k2: v2\n'
+                   '  k3:\n'
+                   '  - name: Unix\n'
+                   '    date: 1969\n'
+                   '  - name: Linux\n'
+                   '    date: 1991\n'
+                   '...\n', conf)
+        conf = 'indentation: {spaces: 2, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '  k1:\n'
                    '    - a\n'
                    '    - b\n'
                    '  k2: v2\n'
+                   '  k3:\n'
+                   '    - name: Unix\n'
+                   '      date: 1969\n'
+                   '    - name: Linux\n'
+                   '      date: 1991\n'
                    '...\n', conf)
 
     def test_three_spaces(self):
-        conf = 'indentation: {spaces: 3}'
+        conf = 'indentation: {spaces: 3, indent-sequences: no}'
+        self.check('---\n'
+                   'object:\n'
+                   '   k1:\n'
+                   '   - a\n'
+                   '   - b\n'
+                   '   k2: v2\n'
+                   '   k3:\n'
+                   '   - name: Unix\n'
+                   '     date: 1969\n'
+                   '   - name: Linux\n'
+                   '     date: 1991\n'
+                   '...\n', conf)
+        conf = 'indentation: {spaces: 3, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '   k1:\n'
                    '      - a\n'
                    '      - b\n'
                    '   k2: v2\n'
+                   '   k3:\n'
+                   '      - name: Unix\n'
+                   '        date: 1969\n'
+                   '      - name: Linux\n'
+                   '        date: 1991\n'
                    '...\n', conf)
 
-    def test_under_indented(self):
+    def test_indent_sequences_whatever(self):
+        conf = 'indentation: {spaces: 4, indent-sequences: whatever}'
+        self.check('---\n'
+                   'list one:\n'
+                   '- 1\n'
+                   '- 2\n'
+                   '- 3\n'
+                   'list two:\n'
+                   '    - a\n'
+                   '    - b\n'
+                   '    - c\n', conf)
+        self.check('---\n'
+                   'list one:\n'
+                   '  - 1\n'
+                   '  - 2\n'
+                   '  - 3\n'
+                   'list two:\n'
+                   '    - a\n'
+                   '    - b\n'
+                   '    - c\n', conf, problem=(3, 3))
+        self.check('---\n'
+                   'list one:\n'
+                   '- 1\n'
+                   '- 2\n'
+                   '- 3\n'
+                   'list two:\n'
+                   '  - a\n'
+                   '  - b\n'
+                   '  - c\n', conf, problem=(7, 3))
+        self.check('---\n'
+                   'list:\n'
+                   '    - 1\n'
+                   '    - 2\n'
+                   '    - 3\n'
+                   '- a\n'
+                   '- b\n'
+                   '- c\n', conf, problem=(6, 1, 'syntax'))
+
+    def test_flow_mappings(self):
         conf = 'indentation: {spaces: 2}'
+        self.check('---\n'
+                   'a: {x: 1,\n'
+                   '    y,\n'
+                   '    z: 1}\n', conf)
+        self.check('---\n'
+                   'a: {x: 1,\n'
+                   '   y,\n'
+                   '    z: 1}\n', conf, problem=(3, 4))
+        self.check('---\n'
+                   'a: {x: 1,\n'
+                   '     y,\n'
+                   '    z: 1}\n', conf, problem=(3, 6))
+        self.check('---\n'
+                   'a: {x: 1,\n'
+                   '  y, z: 1\n'
+                   '}\n', conf, problem=(3, 3))
+        self.check('---\n'
+                   'a: {\n'
+                   '  x: 1,\n'
+                   '  y, z: 1\n'
+                   '}\n', conf)
+        self.check('---\n'
+                   'a: {\n'
+                   '  x: 1,\n'
+                   '  y, z: 1}\n', conf)
+        self.check('---\n'
+                   'a: {\n'
+                   '   x: 1,\n'
+                   '  y, z: 1\n'
+                   '}\n', conf, problem=(3, 4))
+        self.check('---\n'
+                   'a: {\n'
+                   '  x: 1,\n'
+                   '  y, z: 1\n'
+                   '  }\n', conf, problem=(5, 3))
+
+    def test_flow_sequences(self):
+        conf = 'indentation: {spaces: 2}'
+        self.check('---\n'
+                   'a: [x,\n'
+                   '    y,\n'
+                   '    z]\n', conf)
+        self.check('---\n'
+                   'a: [x,\n'
+                   '   y,\n'
+                   '    z]\n', conf, problem=(3, 4))
+        self.check('---\n'
+                   'a: [x,\n'
+                   '     y,\n'
+                   '    z]\n', conf, problem=(3, 6))
+        self.check('---\n'
+                   'a: [x,\n'
+                   '  y, z\n'
+                   ']\n', conf, problem=(3, 3))
+        self.check('---\n'
+                   'a: [\n'
+                   '  x,\n'
+                   '  y, z\n'
+                   ']\n', conf)
+        self.check('---\n'
+                   'a: [\n'
+                   '  x,\n'
+                   '  y, z]\n', conf)
+        self.check('---\n'
+                   'a: [\n'
+                   '   x,\n'
+                   '  y, z\n'
+                   ']\n', conf, problem=(3, 4))
+        self.check('---\n'
+                   'a: [\n'
+                   '  x,\n'
+                   '  y, z\n'
+                   '  ]\n', conf, problem=(5, 3))
+
+    def test_under_indented(self):
+        conf = 'indentation: {spaces: 2, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    ' val: 1\n'
@@ -88,7 +256,13 @@ class IndentationTestCase(RuleTestCase):
                    '  k1:\n'
                    '   - a\n'
                    '...\n', conf, problem=(4, 4))
-        conf = 'indentation: {spaces: 4}'
+        self.check('---\n'
+                   'object:\n'
+                   '  k3:\n'
+                   '    - name: Unix\n'
+                   '     date: 1969\n'
+                   '...\n', conf, problem=(5, 6, 'syntax'))
+        conf = 'indentation: {spaces: 4, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '   val: 1\n'
@@ -98,9 +272,15 @@ class IndentationTestCase(RuleTestCase):
                    '- el2:\n'
                    '   - subel\n'
                    '...\n', conf, problem=(4, 4))
+        self.check('---\n'
+                   'object:\n'
+                   '    k3:\n'
+                   '        - name: Linux\n'
+                   '         date: 1991\n'
+                   '...\n', conf, problem=(5, 10, 'syntax'))
 
     def test_over_indented(self):
-        conf = 'indentation: {spaces: 2}'
+        conf = 'indentation: {spaces: 2, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '   val: 1\n'
@@ -110,7 +290,13 @@ class IndentationTestCase(RuleTestCase):
                    '  k1:\n'
                    '     - a\n'
                    '...\n', conf, problem=(4, 6))
-        conf = 'indentation: {spaces: 4}'
+        self.check('---\n'
+                   'object:\n'
+                   '  k3:\n'
+                   '    - name: Unix\n'
+                   '       date: 1969\n'
+                   '...\n', conf, problem=(5, 12, 'syntax'))
+        conf = 'indentation: {spaces: 4, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '     val: 1\n'
@@ -118,7 +304,7 @@ class IndentationTestCase(RuleTestCase):
         self.check('---\n'
                    ' object:\n'
                    '     val: 1\n'
-                   '...\n', conf, problem1=(2, 2), problem2=(3, 6))
+                   '...\n', conf, problem=(2, 2))
         self.check('---\n'
                    '- el1\n'
                    '- el2:\n'
@@ -129,30 +315,57 @@ class IndentationTestCase(RuleTestCase):
                    '- el2:\n'
                    '              - subel\n'
                    '...\n', conf, problem=(4, 15))
+        self.check('---\n'
+                   '  - el1\n'
+                   '  - el2:\n'
+                   '        - subel\n'
+                   '...\n', conf,
+                   problem=(2, 3))
+        self.check('---\n'
+                   'object:\n'
+                   '    k3:\n'
+                   '        - name: Linux\n'
+                   '           date: 1991\n'
+                   '...\n', conf, problem=(5, 16, 'syntax'))
+        conf = 'indentation: {spaces: 4, indent-sequences: whatever}'
         self.check('---\n'
                    '  - el1\n'
                    '  - el2:\n'
                    '    - subel\n'
                    '...\n', conf,
-                   problem1=(2, 3), problem2=(3, 3), problem3=(4, 5))
+                   problem=(2, 3))
 
     def test_multi_lines(self):
+        conf = 'indentation: {spaces: 2, indent-sequences: yes}'
         self.check('---\n'
                    'long_string: >\n'
                    '  bla bla blah\n'
                    '  blah bla bla\n'
-                   '...\n', None)
+                   '...\n', conf)
         self.check('---\n'
                    '- long_string: >\n'
                    '    bla bla blah\n'
                    '    blah bla bla\n'
-                   '...\n', None)
+                   '...\n', conf)
         self.check('---\n'
                    'obj:\n'
                    '  - long_string: >\n'
                    '      bla bla blah\n'
                    '      blah bla bla\n'
-                   '...\n', None)
+                   '...\n', conf)
+
+    def test_empty_value(self):
+        conf = 'indentation: {spaces: 2}'
+        self.check('---\n'
+                   'key1:\n'
+                   'key2: not empty\n'
+                   'key3:\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   '-\n'
+                   '- item 2\n'
+                   '-\n'
+                   '...\n', conf)
 
     def test_nested_collections(self):
         conf = 'indentation: {spaces: 2}'
@@ -163,7 +376,7 @@ class IndentationTestCase(RuleTestCase):
         self.check('---\n'
                    '- o:\n'
                    ' k1: v1\n'
-                   '...\n', conf, problem=(3, 2))
+                   '...\n', conf, problem=(3, 2, 'syntax'))
         self.check('---\n'
                    '- o:\n'
                    '   k1: v1\n'
@@ -171,18 +384,33 @@ class IndentationTestCase(RuleTestCase):
         conf = 'indentation: {spaces: 4}'
         self.check('---\n'
                    '- o:\n'
-                   '    k1: v1\n'
+                   '      k1: v1\n'
                    '...\n', conf)
-        self.check('---\n'
-                   '- o:\n'
-                   '   k1: v1\n'
-                   '...\n', conf, problem=(3, 4))
         self.check('---\n'
                    '- o:\n'
                    '     k1: v1\n'
                    '...\n', conf, problem=(3, 6))
+        self.check('---\n'
+                   '- o:\n'
+                   '       k1: v1\n'
+                   '...\n', conf, problem=(3, 8))
+        self.check('---\n'
+                   '- - - - item\n'
+                   '    - elem 1\n'
+                   '    - elem 2\n'
+                   '    - - - - - very nested: a\n'
+                   '              key: value\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   ' - - - - item\n'
+                   '     - elem 1\n'
+                   '     - elem 2\n'
+                   '     - - - - - very nested: a\n'
+                   '               key: value\n'
+                   '...\n', conf, problem=(2, 2))
 
     def test_return(self):
+        conf = 'indentation: {spaces: 2}'
         self.check('---\n'
                    'a:\n'
                    '  b:\n'
@@ -191,19 +419,19 @@ class IndentationTestCase(RuleTestCase):
                    '    e:\n'
                    '      f:\n'
                    'g:\n'
-                   '...\n', None)
-        # self.check('---\n'
-        #            'a:\n'
-        #            '  b:\n'
-        #            '    c:\n'
-        #            '   d:\n'
-        #            '...\n', None, problem=(5, 5))
-        # self.check('---\n'
-        #            'a:\n'
-        #            '  b:\n'
-        #            '    c:\n'
-        #            ' d:\n'
-        #            '...\n', None, problem=(5, 2))
+                   '...\n', conf)
+        self.check('---\n'
+                   'a:\n'
+                   '  b:\n'
+                   '    c:\n'
+                   '   d:\n'
+                   '...\n', conf, problem=(5, 4, 'syntax'))
+        self.check('---\n'
+                   'a:\n'
+                   '  b:\n'
+                   '    c:\n'
+                   ' d:\n'
+                   '...\n', conf, problem=(5, 2, 'syntax'))
 
     def test_first_line(self):
         conf = ('indentation: {spaces: 2}\n'

tests/rules/test_syntax_error.py

@@ -35,3 +35,35 @@ class YamlLintTestCase(RuleTestCase):
                    '%TAG ! tag:clarkevans.com,2002:\n'
                    'doc: ument\n'
                    '...\n', None, problem=(3, 1))
+
+    def test_explicit_mapping(self):
+        self.check('---\n'
+                   '? key\n'
+                   ': - value 1\n'
+                   '  - value 2\n'
+                   '...\n', None)
+        self.check('---\n'
+                   '?\n'
+                   '  key\n'
+                   ': {a: 1}\n'
+                   '...\n', None)
+        self.check('---\n'
+                   '?\n'
+                   '  key\n'
+                   ':\n'
+                   '  val\n'
+                   '...\n', None)
+
+    def test_mapping_between_sequences(self):
+        # This is valid YAML. See http://www.yaml.org/spec/1.2/spec.html,
+        # example 2.11
+        self.check('---\n'
+                   '? - Detroit Tigers\n'
+                   '  - Chicago cubs\n'
+                   ':\n'
+                   '  - 2001-07-23\n'
+                   '\n'
+                   '? [New York Yankees,\n'
+                   '   Atlanta Braves]\n'
+                   ': [2001-07-02, 2001-08-12,\n'
+                   '   2001-08-14]\n', None)

tests/rules/test_trailing_spaces.py

@@ -33,11 +33,11 @@ class TrailingSpacesTestCase(RuleTestCase):
         self.check('', conf)
         self.check('\n', conf)
         self.check('    \n', conf, problem=(1, 1))
-        self.check('\t\t\t\n', conf, problem=(1, 1))
+        self.check('\t\t\t\n', conf, problem=(1, 1, 'syntax'))
         self.check('---\n'
                    'some: text \n', conf, problem=(2, 11))
         self.check('---\n'
-                   'some: text\t\n', conf, problem=(2, 11))
+                   'some: text\t\n', conf, problem=(2, 11, 'syntax'))
 
     def test_with_dos_new_lines(self):
         conf = ('trailing-spaces: {}\n'

tests/test_config.py

@@ -0,0 +1,69 @@
+# -*- 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/>.
+
+import os
+import unittest
+
+from yamllint import config
+
+
+class ConfigTestCase(unittest.TestCase):
+    def setUp(self):
+        self.base = config.parse_config_from_file(os.path.join(
+            os.path.dirname(os.path.dirname(os.path.realpath(__file__))),
+            'yamllint', 'conf', 'default.yml'))
+
+    def test_extend_config_disable_rule(self):
+        new = config.parse_config('extends: default\n'
+                                  'rules:\n'
+                                  '  trailing-spaces: disable\n')
+
+        base = self.base.copy()
+        del base['trailing-spaces']
+
+        self.assertEqual(sorted(new.keys()), sorted(base.keys()))
+        for rule in new:
+            self.assertEqual(new[rule], base[rule])
+
+    def test_extend_config_override_whole_rule(self):
+        new = config.parse_config('extends: default\n'
+                                  'rules:\n'
+                                  '  empty-lines:\n'
+                                  '    max: 42\n'
+                                  '    max-start: 43\n'
+                                  '    max-end: 44\n')
+
+        base = self.base.copy()
+        base['empty-lines']['max'] = 42
+        base['empty-lines']['max-start'] = 43
+        base['empty-lines']['max-end'] = 44
+
+        self.assertEqual(sorted(new.keys()), sorted(base.keys()))
+        for rule in new:
+            self.assertEqual(new[rule], base[rule])
+
+    def test_extend_config_override_rule_partly(self):
+        new = config.parse_config('extends: default\n'
+                                  'rules:\n'
+                                  '  empty-lines:\n'
+                                  '    max-start: 42\n')
+
+        base = self.base.copy()
+        base['empty-lines']['max-start'] = 42
+
+        self.assertEqual(sorted(new.keys()), sorted(base.keys()))
+        for rule in new:
+            self.assertEqual(new[rule], base[rule])

yamllint/__init__.py

@@ -22,7 +22,7 @@ from yamllint import parser
 
 
 APP_NAME = 'yamllint'
-APP_VERSION = '0.2.0'
+APP_VERSION = '0.3.0'
 APP_DESCRIPTION = 'A linter for YAML files.'
 
 __author__ = 'Adrien Vergé'
@@ -38,12 +38,17 @@ def get_costemic_problems(buffer, conf):
     token_rules = [r for r in rules if r.TYPE == 'token']
     line_rules = [r for r in rules if r.TYPE == 'line']
 
+    context = {}
+    for rule in token_rules:
+        context[rule.ID] = {}
+
     for elem in parser.token_or_line_generator(buffer):
         if isinstance(elem, parser.Token):
             for rule in token_rules:
                 rule_conf = conf[rule.ID]
                 for problem in rule.check(rule_conf,
-                                          elem.curr, elem.prev, elem.next):
+                                          elem.curr, elem.prev, elem.next,
+                                          context[rule.ID]):
                     problem.rule = rule.ID
                     problem.level = rule_conf['level']
                     yield problem
@@ -58,7 +63,7 @@ def get_costemic_problems(buffer, conf):
 
 def get_syntax_error(buffer):
     try:
-        list(yaml.safe_load_all(buffer))
+        list(yaml.parse(buffer, Loader=yaml.BaseLoader))
     except yaml.error.MarkedYAMLError as e:
         problem = LintProblem(e.problem_mark.line + 1,
                               e.problem_mark.column + 1,
@@ -76,11 +81,16 @@ def _lint(buffer, conf):
         # Insert the syntax error (if any) at the right place...
         if (syntax_error and syntax_error.line <= problem.line and
                 syntax_error.column <= problem.column):
-            # ... unless there is already a yamllint error, in which case the
-            # syntax error is probably redundant.
-            if (syntax_error.line != problem.line or
-                    syntax_error.column != problem.column):
-                yield syntax_error
+            yield syntax_error
+
+            # If there is already a yamllint error at the same place, discard
+            # it as it is probably redundant (and maybe it's just a 'warning',
+            # in which case the script won't even exit with a failure status).
+            if (syntax_error.line == problem.line and
+                    syntax_error.column == problem.column):
+                syntax_error = None
+                continue
+
             syntax_error = None
 
         yield problem

yamllint/conf/default.yml

@@ -31,12 +31,10 @@ rules:
     max-spaces-after: 1
   indentation:
     spaces: 2
+    indent-sequences: yes
   line-length:
     max: 80
   new-line-at-end-of-file: {level: error}
   new-lines:
     type: unix
-  #sequences-indentation:
-  #  level: warning
-  #  present: yes
   trailing-spaces: {}

yamllint/config.py

@@ -46,7 +46,11 @@ def extend_config(content):
         if 'extends' in conf:
             base = parse_config_from_file(get_extended_conf(conf['extends']))
 
-            base.update(conf['rules'])
+            for rule in conf['rules']:
+                if type(conf['rules'][rule]) == dict and rule in base:
+                    base[rule].update(conf['rules'][rule])
+                else:
+                    base[rule] = conf['rules'][rule]
             conf['rules'] = base
 
         return conf
@@ -83,10 +87,16 @@ def parse_config(content):
                     raise YamlLintConfigError(
                         'invalid config: unknown option "%s" for rule "%s"' %
                         (optkey, id))
-                if type(conf['rules'][id][optkey]) != options[optkey]:
-                    raise YamlLintConfigError(
-                        'invalid config: option "%s" of "%s" should be %s' %
-                        (optkey, id, options[optkey].__name__))
+                if type(options[optkey]) == tuple:
+                    if conf['rules'][id][optkey] not in options[optkey]:
+                        raise YamlLintConfigError(
+                            ('invalid config: option "%s" of "%s" should be '
+                             'in %s') % (optkey, id, options[optkey]))
+                else:
+                    if type(conf['rules'][id][optkey]) != options[optkey]:
+                        raise YamlLintConfigError(
+                            ('invalid config: option "%s" of "%s" should be '
+                             '%s' % (optkey, id, options[optkey].__name__)))
                 rules[id][optkey] = conf['rules'][id][optkey]
         else:
             raise YamlLintConfigError(('invalid config: rule "%s": should be '

yamllint/rules/braces.py

@@ -25,7 +25,7 @@ CONF = {'min-spaces-inside': int,
         'max-spaces-inside': int}
 
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     if isinstance(token, yaml.FlowMappingStartToken):
         problem = spaces_after(token, prev, next,
                                min=conf['min-spaces-inside'],

yamllint/rules/brackets.py

@@ -25,7 +25,7 @@ CONF = {'min-spaces-inside': int,
         'max-spaces-inside': int}
 
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     if isinstance(token, yaml.FlowSequenceStartToken):
         problem = spaces_after(token, prev, next,
                                min=conf['min-spaces-inside'],

yamllint/rules/colons.py

@@ -16,7 +16,7 @@
 
 import yaml
 
-from yamllint.rules.common import spaces_after, spaces_before
+from yamllint.rules.common import spaces_after, spaces_before, is_explicit_key
 
 
 ID = 'colons'
@@ -25,7 +25,7 @@ CONF = {'max-spaces-before': int,
         'max-spaces-after': int}
 
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     if isinstance(token, yaml.ValueToken):
         problem = spaces_before(token, prev, next,
                                 max=conf['max-spaces-before'],
@@ -38,3 +38,10 @@ def check(conf, token, prev, next):
                                max_desc='too many spaces after colon')
         if problem is not None:
             yield problem
+
+    if isinstance(token, yaml.KeyToken) and is_explicit_key(token):
+        problem = spaces_after(token, prev, next,
+                               max=conf['max-spaces-after'],
+                               max_desc='too many spaces after question mark')
+        if problem is not None:
+            yield problem

yamllint/rules/commas.py

@@ -16,6 +16,7 @@
 
 import yaml
 
+from yamllint.errors import LintProblem
 from yamllint.rules.common import spaces_after, spaces_before
 
 
@@ -25,13 +26,18 @@ CONF = {'max-spaces-before': int,
         'max-spaces-after': int}
 
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     if isinstance(token, yaml.FlowEntryToken):
-        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
+        if prev is not None 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,
                                max=conf['max-spaces-after'],

yamllint/rules/comments.py

@@ -26,7 +26,7 @@ CONF = {'require-starting-space': bool,
         'min-spaces-from-content': int}
 
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     for comment in get_comments_between_tokens(token, next):
         if (conf['min-spaces-from-content'] != -1 and
                 not isinstance(token, yaml.StreamStartToken) and

yamllint/rules/comments_indentation.py

@@ -17,27 +17,48 @@
 import yaml
 
 from yamllint.errors import LintProblem
-from yamllint.rules.common import get_comments_between_tokens
+from yamllint.rules.common import get_line_indent, get_comments_between_tokens
 
 
 ID = 'comments-indentation'
 TYPE = 'token'
 
 
-def check(conf, token, prev, next):
+# Case A:
+#
+#     prev: line:
+#       # commented line
+#       current: line
+#
+# Case B:
+#
+#       prev: line
+#       # commented line 1
+#     # commented line 2
+#     current: line
+
+def check(conf, token, prev, next, context):
     if prev is None:
         return
 
-    token_indent = token.start_mark.column
+    curr_line_indent = token.start_mark.column
     if isinstance(token, yaml.StreamEndToken):
-        token_indent = 0
+        curr_line_indent = 0
 
-    skip_first = True
+    skip_first_line = True
     if isinstance(prev, yaml.StreamStartToken):
-        skip_first = False
+        skip_first_line = False
+        prev_line_indent = 0
+    else:
+        prev_line_indent = get_line_indent(prev)
 
-    for comment in get_comments_between_tokens(prev, token,
-                                               skip_first_line=skip_first):
-        if comment.column != token_indent + 1:
+    if prev_line_indent <= curr_line_indent:
+        prev_line_indent = -1  # disable it
+
+    for comment in get_comments_between_tokens(
+            prev, token, skip_first_line=skip_first_line):
+        if comment.column - 1 == curr_line_indent:
+            prev_line_indent = -1  # disable it
+        elif comment.column - 1 != prev_line_indent:
             yield LintProblem(comment.line, comment.column,
-                              'comment not intended like content')
+                              'comment not indented like content')

yamllint/rules/common.py

@@ -64,6 +64,16 @@ class Comment(object):
                 str(self) == str(other))
 
 
+def get_line_indent(token):
+    """Finds the indent of the line the token starts in."""
+    start = token.start_mark.buffer.rfind('\n', 0,
+                                          token.start_mark.pointer) + 1
+    content = start
+    while token.start_mark.buffer[content] == ' ':
+        content += 1
+    return content - start
+
+
 def get_comments_between_tokens(token1, token2, skip_first_line=False):
     if token2 is None:
         buf = token1.end_mark.buffer[token1.end_mark.pointer:]
@@ -91,3 +101,15 @@ def get_comments_between_tokens(token1, token2, skip_first_line=False):
         pointer += len(line) + 1
         line_no += 1
         column_no = 1
+
+
+def is_explicit_key(token):
+    # explicit key:
+    #   ? key
+    #   : v
+    # or
+    #   ?
+    #     key
+    #   : v
+    return (token.start_mark.pointer < token.end_mark.pointer and
+            token.start_mark.buffer[token.start_mark.pointer] == '?')

yamllint/rules/document_end.py

@@ -24,7 +24,7 @@ TYPE = 'token'
 CONF = {'present': bool}
 
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     if conf['present']:
         if (isinstance(token, yaml.StreamEndToken) and
                 not (isinstance(prev, yaml.DocumentEndToken) or

yamllint/rules/document_start.py

@@ -24,7 +24,7 @@ TYPE = 'token'
 CONF = {'present': bool}
 
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     if conf['present']:
         if (isinstance(prev, (yaml.StreamStartToken,
                               yaml.DocumentEndToken,

yamllint/rules/hyphens.py

@@ -24,7 +24,7 @@ TYPE = 'token'
 CONF = {'max-spaces-after': int}
 
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     if isinstance(token, yaml.BlockEntryToken):
         problem = spaces_after(token, prev, next,
                                max=conf['max-spaces-after'],

yamllint/rules/indentation.py

@@ -17,54 +17,172 @@
 import yaml
 
 from yamllint.errors import LintProblem
+from yamllint.rules.common import is_explicit_key
 
 
 ID = 'indentation'
 TYPE = 'token'
-CONF = {'spaces': int}
+CONF = {'spaces': int,
+        'indent-sequences': (True, False, 'whatever')}
+
+ROOT, MAP, B_SEQ, F_SEQ, KEY, VAL = range(6)
 
 
-def check(conf, token, prev, next):
-    if isinstance(token, (yaml.StreamStartToken, yaml.StreamEndToken)):
-        return
+class Parent(object):
+    def __init__(self, type, indent):
+        self.type = type
+        self.indent = indent
+        self.explicit_key = False
 
-    # Check if first token in line
-    if (not isinstance(prev, (yaml.StreamStartToken, yaml.DirectiveToken)) and
-            token.start_mark.line == prev.end_mark.line):
-        return
 
-    if token.start_mark.column % conf['spaces'] != 0:
-        yield LintProblem(
-            token.end_mark.line + 1, token.start_mark.column + 1,
-            'indentation is not a multiple of %d' % conf['spaces'])
-        return
+def check(conf, token, prev, next, context):
+    if 'stack' not in context:
+        context['stack'] = [Parent(ROOT, 0)]
+        context['cur_line'] = -1
 
-    if isinstance(prev, (yaml.StreamStartToken,
-                         yaml.DirectiveToken,
-                         yaml.DocumentStartToken,
-                         yaml.DocumentEndToken)):
-        indent = 0
-    else:
-        buffer = prev.end_mark.buffer
-        start = buffer.rfind('\n', 0, prev.end_mark.pointer) + 1
+    # Step 1: Lint
 
-        indent = 0
-        while buffer[start + indent] == ' ':
-            indent += 1
+    if (not isinstance(token, (yaml.StreamStartToken, yaml.StreamEndToken)) and
+            not isinstance(token, yaml.BlockEndToken) and
+            not (isinstance(token, yaml.ScalarToken) and token.value == '') and
+            token.start_mark.line + 1 > context['cur_line']):
 
-    if token.start_mark.column > indent:
-        if not isinstance(prev, (yaml.BlockSequenceStartToken,
-                                 yaml.BlockMappingStartToken,
-                                 yaml.FlowSequenceStartToken,
-                                 yaml.FlowMappingStartToken,
-                                 yaml.KeyToken,
-                                 yaml.ValueToken)):
-            yield LintProblem(
-                token.end_mark.line + 1, token.start_mark.column + 1,
-                'unexpected indentation')
+        found_indentation = token.start_mark.column
+        expected = context['stack'][-1].indent
 
-        elif token.start_mark.column != indent + conf['spaces']:
-            yield LintProblem(
-                token.end_mark.line + 1, token.start_mark.column + 1,
-                'found indentation of %d instead of %d' %
-                (token.start_mark.column, indent + conf['spaces']))
+        if isinstance(token, (yaml.FlowMappingEndToken,
+                              yaml.FlowSequenceEndToken)):
+            expected = 0
+        elif (context['stack'][-1].type == KEY and
+                context['stack'][-1].explicit_key and
+                not isinstance(token, yaml.ValueToken)):
+            expected += conf['spaces']
+
+        if found_indentation != expected:
+            yield LintProblem(token.start_mark.line + 1, found_indentation + 1,
+                              'wrong indentation: expected %d but found %d' %
+                              (expected, found_indentation))
+
+        context['cur_line_indent'] = found_indentation
+        context['cur_line'] = token.end_mark.line + 1
+
+    # Step 2: Update state
+
+    if isinstance(token, yaml.BlockMappingStartToken):
+        assert isinstance(next, yaml.KeyToken)
+        if next.start_mark.line == token.start_mark.line:
+            #   - a: 1
+            #     b: 2
+            # or
+            #   - ? a
+            #     : 1
+            indent = token.start_mark.column
+        else:
+            #   - ?
+            #       a
+            #     : 1
+            indent = token.start_mark.column + conf['spaces']
+
+        context['stack'].append(Parent(MAP, indent))
+
+    elif isinstance(token, yaml.FlowMappingStartToken):
+        if next.start_mark.line == token.start_mark.line:
+            #   - {a: 1, b: 2}
+            indent = next.start_mark.column
+        else:
+            #   - {
+            #   a: 1, b: 2
+            # }
+            indent = context['cur_line_indent'] + conf['spaces']
+
+        context['stack'].append(Parent(MAP, indent))
+
+    elif isinstance(token, yaml.BlockSequenceStartToken):
+        #   - - a
+        #     - b
+        assert next.start_mark.line == token.start_mark.line
+        assert isinstance(next, yaml.BlockEntryToken)
+
+        indent = token.start_mark.column
+
+        context['stack'].append(Parent(B_SEQ, 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 = context['cur_line_indent'] + conf['spaces']
+
+        context['stack'].append(Parent(F_SEQ, indent))
+
+    elif isinstance(token, (yaml.BlockEndToken,
+                            yaml.FlowMappingEndToken,
+                            yaml.FlowSequenceEndToken)):
+        assert context['stack'][-1].type in (MAP, B_SEQ, F_SEQ)
+        context['stack'].pop()
+
+    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)
+
+    if context['stack'][-1].type == VAL:
+        context['stack'].pop()
+        assert context['stack'][-1].type == KEY
+        context['stack'].pop()
+
+    elif isinstance(token, yaml.ValueToken):
+        assert context['stack'][-1].type == KEY
+
+        # Discard empty values
+        if isinstance(next, (yaml.BlockEndToken,
+                             yaml.FlowMappingEndToken,
+                             yaml.FlowSequenceEndToken,
+                             yaml.KeyToken)):
+            context['stack'].pop()
+        else:
+            if context['stack'][-1].explicit_key:
+                #   ? k
+                #   : value
+                # or
+                #   ? k
+                #   :
+                #     value
+                indent = context['stack'][-1].indent + conf['spaces']
+            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 conf['indent-sequences'] is False:
+                    indent = context['stack'][-1].indent
+                elif conf['indent-sequences'] is True:
+                    indent = context['stack'][-1].indent + conf['spaces']
+                else:  # 'whatever'
+                    if next.start_mark.column == context['stack'][-1].indent:
+                        #   key:
+                        #   - e1
+                        #   - e2
+                        indent = context['stack'][-1].indent
+                    else:
+                        #   key:
+                        #     - e1
+                        #     - e2
+                        indent = context['stack'][-1].indent + conf['spaces']
+            else:
+                #   k:
+                #     value
+                indent = context['stack'][-1].indent + conf['spaces']
+
+            context['stack'].append(Parent(VAL, indent))