community.general/v2/ansible/parsing/yaml/composer.py

50 lines
2.0 KiB
Python

# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible 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.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
from yaml.composer import Composer
from yaml.nodes import MappingNode
class AnsibleComposer(Composer):
def __init__(self):
self.__mapping_starts = []
super(Composer, self).__init__()
def compose_node(self, parent, index):
# the line number where the previous token has ended (plus empty lines)
node = Composer.compose_node(self, parent, index)
if isinstance(node, MappingNode):
node.__datasource__ = self.name
try:
(cur_line, cur_column) = self.__mapping_starts.pop()
except:
cur_line = None
cur_column = None
node.__line__ = cur_line
node.__column__ = cur_column
return node
def compose_mapping_node(self, anchor):
# the column here will point at the position in the file immediately
# after the first key is found, which could be a space or a newline.
# We could back this up to find the beginning of the key, but this
# should be good enough to determine the error location.
self.__mapping_starts.append((self.line + 1, self.column + 1))
return Composer.compose_mapping_node(self, anchor)