Add support for tree objects in revision pools

Commits now store pointers to their tree objects.
Tree objects now work as separate git_revpool_object
entities.
Tree objects can be loaded and parsed inedependently
from commits.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/src/git/tree.h b/src/git/tree.h
new file mode 100644
index 000000000..d5f668c54
--- /dev/null
+++ b/src/git/tree.h
@@ -0,0 +1,39 @@
+#ifndef INCLUDE_git_tree_h__
+#define INCLUDE_git_tree_h__
+
+#include "common.h"
+#include "oid.h"
+
+/**
+ * @file git/tree.h
+ * @brief Git tree parsing, loading routines
+ * @defgroup git_tree Git tree parsing, loading routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/** Representation of a tree object. */
+typedef struct git_tree git_tree;
+
+/**
+ * Locate a reference to a tree without loading it.
+ * The generated tree object is owned by the revision
+ * pool and shall not be freed by the user.
+ *
+ * @param pool the pool to use when locating the tree.
+ * @param id identity of the tree to locate.
+ * @return the tree; NULL if the tree could not be created
+ */
+GIT_EXTERN(git_tree *) git_tree_lookup(git_revpool *pool, const git_oid *id);
+
+/**
+ * Get the id of a tree.
+ * @param tree a previously loaded tree.
+ * @return object identity for the tree.
+ */
+GIT_EXTERN(const git_oid *) git_tree_id(git_tree *tree);
+
+/** @} */
+GIT_END_DECL
+#endif