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# vim:fileencoding=utf-8:noet
from __future__ import (unicode_literals, division, absolute_import, print_function)
import re
from powerline.lint.markedjson.error import MarkedError
from powerline.lint.markedjson import nodes
class ResolverError(MarkedError):
pass
class BaseResolver:
DEFAULT_SCALAR_TAG = 'tag:yaml.org,2002:str'
DEFAULT_SEQUENCE_TAG = 'tag:yaml.org,2002:seq'
DEFAULT_MAPPING_TAG = 'tag:yaml.org,2002:map'
yaml_implicit_resolvers = {}
yaml_path_resolvers = {}
def __init__(self):
self.resolver_exact_paths = []
self.resolver_prefix_paths = []
@classmethod
def add_implicit_resolver(cls, tag, regexp, first):
if 'yaml_implicit_resolvers' not in cls.__dict__:
cls.yaml_implicit_resolvers = cls.yaml_implicit_resolvers.copy()
if first is None:
first = [None]
for ch in first:
cls.yaml_implicit_resolvers.setdefault(ch, []).append((tag, regexp))
def descend_resolver(self, current_node, current_index):
if not self.yaml_path_resolvers:
return
exact_paths = {}
prefix_paths = []
if current_node:
depth = len(self.resolver_prefix_paths)
for path, kind in self.resolver_prefix_paths[-1]:
if self.check_resolver_prefix(depth, path, kind, current_node, current_index):
if len(path) > depth:
prefix_paths.append((path, kind))
else:
exact_paths[kind] = self.yaml_path_resolvers[path, kind]
else:
for path, kind in self.yaml_path_resolvers:
if not path:
exact_paths[kind] = self.yaml_path_resolvers[path, kind]
else:
prefix_paths.append((path, kind))
self.resolver_exact_paths.append(exact_paths)
self.resolver_prefix_paths.append(prefix_paths)
def ascend_resolver(self):
if not self.yaml_path_resolvers:
return
self.resolver_exact_paths.pop()
self.resolver_prefix_paths.pop()
def check_resolver_prefix(self, depth, path, kind, current_node, current_index):
node_check, index_check = path[depth - 1]
if isinstance(node_check, str):
if current_node.tag != node_check:
return
elif node_check is not None:
if not isinstance(current_node, node_check):
return
if index_check is True and current_index is not None:
return
if ((index_check is False or index_check is None)
and current_index is None):
return
if isinstance(index_check, str):
if not (isinstance(current_index, nodes.ScalarNode) and index_check == current_index.value):
return
elif isinstance(index_check, int) and not isinstance(index_check, bool):
if index_check != current_index:
return
return True
def resolve(self, kind, value, implicit, mark=None):
if kind is nodes.ScalarNode and implicit[0]:
if value == '':
resolvers = self.yaml_implicit_resolvers.get('', [])
else:
resolvers = self.yaml_implicit_resolvers.get(value[0], [])
resolvers += self.yaml_implicit_resolvers.get(None, [])
for tag, regexp in resolvers:
if regexp.match(value):
return tag
else:
self.echoerr(
'While resolving plain scalar', None,
'expected floating-point value, integer, null or boolean, but got %r' % value,
mark
)
return self.DEFAULT_SCALAR_TAG
if kind is nodes.ScalarNode:
return self.DEFAULT_SCALAR_TAG
elif kind is nodes.SequenceNode:
return self.DEFAULT_SEQUENCE_TAG
elif kind is nodes.MappingNode:
return self.DEFAULT_MAPPING_TAG
class Resolver(BaseResolver):
pass
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:bool',
re.compile(r'''^(?:true|false)$''', re.X),
list('yYnNtTfFoO'))
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:float',
re.compile(r'^-?(?:0|[1-9]\d*)(?=[.eE])(?:\.\d+)?(?:[eE][-+]?\d+)?$', re.X),
list('-0123456789'))
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:int',
re.compile(r'^(?:0|-?[1-9]\d*)$', re.X),
list('-0123456789'))
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:null',
re.compile(r'^null$', re.X),
['n'])
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