Add type attribute to TreeEntry

This allows complete iteration and rebuilding of a tree without hitting
the object store for every entry.

docs/objects.rst

@@ -176,6 +176,7 @@ Tree entries
 .. autoattribute:: pygit2.TreeEntry.id
 .. autoattribute:: pygit2.TreeEntry.hex
 .. autoattribute:: pygit2.TreeEntry.filemode
+.. autoattribute:: pygit2.TreeEntry.type
 
 .. method:: TreeEntry.__cmp__(TreeEntry)
 
@@ -188,14 +189,14 @@ Example::
     6
 
     >>> for entry in tree:               # Iteration
-    ...     print(entry.id, entry.name)
+    ...     print(entry.id, entry.type, entry.name)
     ...
-    7151ca7cd3e59f3eab19c485cfbf3cb30928d7fa .gitignore
-    c36f4cf1e38ec1bb9d9ad146ed572b89ecfc9f18 COPYING
-    32b30b90b062f66957d6790c3c155c289c34424e README.md
-    c87dae4094b3a6d10e08bc6c5ef1f55a7e448659 pygit2.c
-    85a67270a49ef16cdd3d328f06a3e4b459f09b27 setup.py
-    3d8985bbec338eb4d47c5b01b863ee89d044bd53 test
+    7151ca7cd3e59f3eab19c485cfbf3cb30928d7fa blob .gitignore
+    c36f4cf1e38ec1bb9d9ad146ed572b89ecfc9f18 blob COPYING
+    32b30b90b062f66957d6790c3c155c289c34424e blob README.md
+    c87dae4094b3a6d10e08bc6c5ef1f55a7e448659 blob pygit2.c
+    85a67270a49ef16cdd3d328f06a3e4b459f09b27 blob setup.py
+    3d8985bbec338eb4d47c5b01b863ee89d044bd53 tree test
 
     >>> entry = tree['pygit2.c']         # Get an entry by name
     >>> entry

src/tree.c

@@ -67,6 +67,15 @@ TreeEntry_name__get__(TreeEntry *self)
 }
 
 
+PyDoc_STRVAR(TreeEntry_type__doc__, "Type.");
+
+PyObject *
+TreeEntry_type__get__(TreeEntry *self)
+{
+    return to_path(git_object_type2string(git_tree_entry_type(self->entry)));
+}
+
+
 PyDoc_STRVAR(TreeEntry_id__doc__, "Object id.");
 
 PyObject *
@@ -171,6 +180,7 @@ PyGetSetDef TreeEntry_getseters[] = {
     GETTER(TreeEntry, oid),
     GETTER(TreeEntry, id),
     GETTER(TreeEntry, hex),
+    GETTER(TreeEntry, type),
     {NULL}
 };
 

test/test_tree.py

@@ -32,7 +32,7 @@ from __future__ import unicode_literals
 import operator
 import unittest
 
-from pygit2 import TreeEntry
+from pygit2 import TreeEntry, GIT_FILEMODE_TREE
 from . import utils
 
 
@@ -89,6 +89,7 @@ class TreeTest(utils.BareRepoTestCase):
         tree = self.repo[TREE_SHA]
         subtree_entry = tree['c']
         self.assertTreeEntryEqual(subtree_entry, SUBTREE_SHA, 'c', 0o0040000)
+        self.assertEquals(subtree_entry.type, 'tree')
 
         subtree = self.repo[subtree_entry.id]
         self.assertEqual(1, len(subtree))
@@ -100,21 +101,34 @@ class TreeTest(utils.BareRepoTestCase):
         repo = self.repo
         b0 = repo.create_blob('1')
         b1 = repo.create_blob('2')
+        st = repo.TreeBuilder()
+        st.insert('a', b0, 0o0100644)
+        subtree = repo[st.write()]
+
         t = repo.TreeBuilder()
         t.insert('x', b0, 0o0100644)
         t.insert('y', b1, 0o0100755)
+        t.insert('z', subtree.id, GIT_FILEMODE_TREE)
         tree = repo[t.write()]
 
         self.assertTrue('x' in tree)
         self.assertTrue('y' in tree)
+        self.assertTrue('z' in tree)
 
         x = tree['x']
         y = tree['y']
+        z = tree['z']
         self.assertEqual(x.filemode, 0o0100644)
         self.assertEqual(y.filemode, 0o0100755)
+        self.assertEqual(z.filemode, GIT_FILEMODE_TREE)
 
         self.assertEqual(repo[x.id].id, b0)
         self.assertEqual(repo[y.id].id, b1)
+        self.assertEqual(repo[z.id].id, subtree.id)
+
+        self.assertEqual(x.type, 'blob')
+        self.assertEqual(y.type, 'blob')
+        self.assertEqual(z.type, 'tree')
 
 
     def test_modify_tree(self):