Add new 'unsafe' YAML constructor

lib/ansible/parsing/yaml/constructor.py

@@ -22,6 +22,7 @@ __metaclass__ = type
 from yaml.constructor import Constructor, ConstructorError
 from yaml.nodes import MappingNode
 from ansible.parsing.yaml.objects import AnsibleMapping, AnsibleSequence, AnsibleUnicode
+from ansible.vars.unsafe_proxy import wrap_var
 
 try:
     from __main__ import display
@@ -72,7 +73,7 @@ class AnsibleConstructor(Constructor):
 
         return mapping
 
-    def construct_yaml_str(self, node):
+    def construct_yaml_str(self, node, unsafe=False):
         # Override the default string handling function
         # to always return unicode objects
         value = self.construct_scalar(node)
@@ -80,6 +81,9 @@ class AnsibleConstructor(Constructor):
 
         ret.ansible_pos = self._node_position_info(node)
 
+        if unsafe:
+            ret = wrap_var(ret)
+
         return ret
 
     def construct_yaml_seq(self, node):
@@ -88,6 +92,9 @@ class AnsibleConstructor(Constructor):
         data.extend(self.construct_sequence(node))
         data.ansible_pos = self._node_position_info(node)
 
+    def construct_yaml_unsafe(self, node):
+        return self.construct_yaml_str(node, unsafe=True)
+
     def _node_position_info(self, node):
         # the line number where the previous token has ended (plus empty lines)
         # Add one so that the first line is line 1 rather than line 0
@@ -121,3 +128,7 @@ AnsibleConstructor.add_constructor(
 AnsibleConstructor.add_constructor(
     u'tag:yaml.org,2002:seq',
     AnsibleConstructor.construct_yaml_seq)
+
+AnsibleConstructor.add_constructor(
+    u'!unsafe',
+    AnsibleConstructor.construct_yaml_unsafe)