1 files changed, 82 insertions, 0 deletions
diff --git a/azure/aria/aria-extension-cloudify/src/aria/aria/parser/loading/location.py b/azure/aria/aria-extension-cloudify/src/aria/aria/parser/loading/location.py
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index 0000000..902e856
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+++ b/azure/aria/aria-extension-cloudify/src/aria/aria/parser/loading/location.py
@@ -0,0 +1,82 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import os
+
+from ...utils.uris import as_file
+
+
+class Location(object):
+    """
+    Base class for ARIA locations.
+
+    Locations are used by :class:`~aria.parser.loading.LoaderSource` to delegate to
+    an appropriate :class:`~aria.parser.loading.Loader`.
+    """
+
+    def is_equivalent(self, location):
+        raise NotImplementedError
+
+    @property
+    def prefix(self):
+        return None
+
+
+class UriLocation(Location):
+    """
+    A URI location can be absolute or relative, and can include a scheme or not.
+
+    If no scheme is included, it should be treated as a filesystem path.
+
+    See :class:`~aria.parser.loading.UriTextLoader`.
+    """
+
+    def __init__(self, uri):
+        self.uri = uri
+
+    def is_equivalent(self, location):
+        return isinstance(location, UriLocation) and (location.uri == self.uri)
+
+    @property
+    def prefix(self):
+        prefix = os.path.dirname(self.uri)
+        if prefix and (as_file(prefix) is None):
+            # Yes, it's weird, but dirname handles URIs,
+            # too: http://stackoverflow.com/a/35616478/849021
+            # We just need to massage it with a trailing slash
+            prefix += '/'
+        return prefix
+
+    def __str__(self):
+        return self.uri
+
+
+class LiteralLocation(Location):
+    """
+    A location that embeds content.
+
+    See :class:`~aria.parser.loading.LiteralLoader`.
+    """
+
+    def __init__(self, content, name='literal'):
+        self.content = content
+        self.name = name
+
+    def is_equivalent(self, location):
+        return isinstance(location, LiteralLocation) and (location.content == self.content)
+
+    def __str__(self):
+        return '<%s>' % self.name