- main problem in moving stuff from yaml/py to yaml was that

  parser.py clashes with built-in parser module (CPython, C-module)
  which is inlucded from pkg_resources/__init__.py
- no C compile yet

1 files changed, 84 insertions, 0 deletions

diff --git a/nodes.py b/nodes.py
new file mode 100644
index 0000000..382b492
--- /dev/null
+++ b/nodes.py
@@ -0,0 +1,84 @@
+from __future__ import print_function
+
+
+class Node(object):
+    def __init__(self, tag, value, start_mark, end_mark, comment=None):
+        self.tag = tag
+        self.value = value
+        self.start_mark = start_mark
+        self.end_mark = end_mark
+        self.comment = comment
+        self.anchor = None
+
+    def __repr__(self):
+        value = self.value
+        # if isinstance(value, list):
+        #     if len(value) == 0:
+        #         value = '<empty>'
+        #     elif len(value) == 1:
+        #         value = '<1 item>'
+        #     else:
+        #         value = '<%d items>' % len(value)
+        # else:
+        #     if len(value) > 75:
+        #         value = repr(value[:70]+u' ... ')
+        #     else:
+        #         value = repr(value)
+        value = repr(value)
+        return '%s(tag=%r, value=%s)' % (self.__class__.__name__,
+                                         self.tag, value)
+
+    def dump(self, indent=0):
+        if isinstance(self.value, basestring):
+            print('{}{}(tag={!r}, value={!r})'.format(
+                '  ' * indent, self.__class__.__name__, self.tag, self.value))
+            if self.comment:
+                print('    {}comment: {})'.format(
+                    '  ' * indent, self.comment))
+            return
+        print('{}{}(tag={!r})'.format(
+            '  ' * indent, self.__class__.__name__, self.tag))
+        if self.comment:
+            print('    {}comment: {})'.format(
+                '  ' * indent, self.comment))
+        for v in self.value:
+            if isinstance(v, tuple):
+                for v1 in v:
+                    v1.dump(indent+1)
+            elif isinstance(v, Node):
+                v.dump(indent+1)
+            else:
+                print('Node value type?', type(v))
+
+
+class ScalarNode(Node):
+    """
+    styles:
+      ? -> set() ? key, no value
+      " -> double quoted
+      ' -> single quoted
+      | -> literal style
+      > ->
+    """
+    id = 'scalar'
+
+    def __init__(self, tag, value, start_mark=None, end_mark=None, style=None,
+                 comment=None):
+        Node.__init__(self, tag, value, start_mark, end_mark, comment=comment)
+        self.style = style
+
+
+class CollectionNode(Node):
+    def __init__(self, tag, value, start_mark=None, end_mark=None,
+                 flow_style=None, comment=None, anchor=None):
+        Node.__init__(self, tag, value, start_mark, end_mark, comment=comment)
+        self.flow_style = flow_style
+        self.anchor = anchor
+
+
+class SequenceNode(CollectionNode):
+    id = 'sequence'
+
+
+class MappingNode(CollectionNode):
+    id = 'mapping'