Rules: Keep a persistent context for token rules

This will be needed to build a clean indentation checking algorithm.

yamllint/__init__.py

@@ -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

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

@@ -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'],

yamllint/rules/commas.py

@@ -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.FlowEntryToken):
         problem = spaces_before(token, prev, next,
                                 max=conf['max-spaces-before'],

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

@@ -37,7 +37,7 @@ TYPE = 'token'
 #     # commented line 2
 #     current: line
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     if prev is None:
         return
 

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

@@ -24,7 +24,7 @@ TYPE = 'token'
 CONF = {'spaces': int}
 
 
-def check(conf, token, prev, next):
+def check(conf, token, prev, next, context):
     if isinstance(token, (yaml.StreamStartToken, yaml.StreamEndToken)):
         return