Standardize cast versions of git_object accessors

This removes the GIT_INLINE versions of the simple git_object
accessors and standardizes them with a helper macro in src/object.h
to build the function bodies.

include/git2/blob.h

@@ -29,10 +29,7 @@ GIT_BEGIN_DECL
  * @param id identity of the blob to locate.
  * @return 0 or an error code
  */
-GIT_INLINE(int) git_blob_lookup(git_blob **blob, git_repository *repo, const git_oid *id)
+GIT_EXTERN(int) git_blob_lookup(git_blob **blob, git_repository *repo, const git_oid *id);
-{
-	return git_object_lookup((git_object **)blob, repo, id, GIT_OBJ_BLOB);
-}
 
 /**
  * Lookup a blob object from a repository,
@@ -46,10 +43,7 @@ GIT_INLINE(int) git_blob_lookup(git_blob **blob, git_repository *repo, const git
  * @param len the length of the short identifier
  * @return 0 or an error code
  */
-GIT_INLINE(int) git_blob_lookup_prefix(git_blob **blob, git_repository *repo, const git_oid *id, size_t len)
+GIT_EXTERN(int) git_blob_lookup_prefix(git_blob **blob, git_repository *repo, const git_oid *id, size_t len);
-{
-	return git_object_lookup_prefix((git_object **)blob, repo, id, len, GIT_OBJ_BLOB);
-}
 
 /**
  * Close an open blob
@@ -62,11 +56,7 @@ GIT_INLINE(int) git_blob_lookup_prefix(git_blob **blob, git_repository *repo, co
  *
  * @param blob the blob to close
  */
-
+GIT_EXTERN(void) git_blob_free(git_blob *blob);
-GIT_INLINE(void) git_blob_free(git_blob *blob)
-{
-	git_object_free((git_object *) blob);
-}
 
 /**
  * Get the id of a blob.
@@ -74,11 +64,15 @@ GIT_INLINE(void) git_blob_free(git_blob *blob)
  * @param blob a previously loaded blob.
  * @return SHA1 hash for this blob.
  */
-GIT_INLINE(const git_oid *) git_blob_id(const git_blob *blob)
+GIT_EXTERN(const git_oid *) git_blob_id(const git_blob *blob);
-{
-	return git_object_id((const git_object *)blob);
-}
 
+/**
+ * Get the repository that contains the blob.
+ *
+ * @param blob A previously loaded blob.
+ * @return Repository that contains this blob.
+ */
+GIT_EXTERN(git_repository *) git_blob_owner(const git_blob *blob);
 
 /**
  * Get a read-only buffer with the raw content of a blob.

include/git2/tag.h

@@ -30,12 +30,8 @@ GIT_BEGIN_DECL
  * @param id identity of the tag to locate.
  * @return 0 or an error code
  */
-GIT_INLINE(int) git_tag_lookup(
+GIT_EXTERN(int) git_tag_lookup(
-	git_tag **out, git_repository *repo, const git_oid *id)
+	git_tag **out, git_repository *repo, const git_oid *id);
-{
-	return git_object_lookup(
-		(git_object **)out, repo, id, (git_otype)GIT_OBJ_TAG);
-}
 
 /**
  * Lookup a tag object from the repository,
@@ -49,12 +45,8 @@ GIT_INLINE(int) git_tag_lookup(
  * @param len the length of the short identifier
  * @return 0 or an error code
  */
-GIT_INLINE(int) git_tag_lookup_prefix(
+GIT_EXTERN(int) git_tag_lookup_prefix(
-	git_tag **out, git_repository *repo, const git_oid *id, size_t len)
+	git_tag **out, git_repository *repo, const git_oid *id, size_t len);
-{
-	return git_object_lookup_prefix(
-		(git_object **)out, repo, id, len, (git_otype)GIT_OBJ_TAG);
-}
 
 /**
  * Close an open tag
@@ -66,12 +58,7 @@ GIT_INLINE(int) git_tag_lookup_prefix(
  *
  * @param tag the tag to close
  */
-
+GIT_EXTERN(void) git_tag_free(git_tag *tag);
-GIT_INLINE(void) git_tag_free(git_tag *tag)
-{
-	git_object_free((git_object *)tag);
-}
-
 
 /**
  * Get the id of a tag.
@@ -81,6 +68,14 @@ GIT_INLINE(void) git_tag_free(git_tag *tag)
  */
 GIT_EXTERN(const git_oid *) git_tag_id(const git_tag *tag);
 
+/**
+ * Get the repository that contains the tag.
+ *
+ * @param tag A previously loaded tag.
+ * @return Repository that contains this tag.
+ */
+GIT_EXTERN(git_repository *) git_tag_owner(const git_tag *tag);
+
 /**
  * Get the tagged object of a tag
  *

include/git2/tree.h

@@ -29,11 +29,8 @@ GIT_BEGIN_DECL
  * @param id Identity of the tree to locate.
  * @return 0 or an error code
  */
-GIT_INLINE(int) git_tree_lookup(
+GIT_EXTERN(int) git_tree_lookup(
-	git_tree **out, git_repository *repo, const git_oid *id)
+	git_tree **out, git_repository *repo, const git_oid *id);
-{
-	return git_object_lookup((git_object **)out, repo, id, GIT_OBJ_TREE);
-}
 
 /**
  * Lookup a tree object from the repository,
@@ -47,15 +44,11 @@ GIT_INLINE(int) git_tree_lookup(
  * @param len the length of the short identifier
  * @return 0 or an error code
  */
-GIT_INLINE(int) git_tree_lookup_prefix(
+GIT_EXTERN(int) git_tree_lookup_prefix(
 	git_tree **out,
 	git_repository *repo,
 	const git_oid *id,
-	size_t len)
+	size_t len);
-{
-	return git_object_lookup_prefix(
-		(git_object **)out, repo, id, len, GIT_OBJ_TREE);
-}
 
 /**
  * Close an open tree
@@ -67,10 +60,7 @@ GIT_INLINE(int) git_tree_lookup_prefix(
  *
  * @param tree The tree to close
  */
-GIT_INLINE(void) git_tree_free(git_tree *tree)
+GIT_EXTERN(void) git_tree_free(git_tree *tree);
-{
-	git_object_free((git_object *)tree);
-}
 
 /**
  * Get the id of a tree.

src/blob.c

@@ -15,6 +15,8 @@
 #include "filter.h"
 #include "buf_text.h"
 
+GIT_OBJ_WRAPPER(git_blob, GIT_OBJ_BLOB)
+
 const void *git_blob_rawcontent(const git_blob *blob)
 {
 	assert(blob);

src/object.h

@@ -28,4 +28,16 @@ int git_oid__parse(git_oid *oid, const char **buffer_out, const char *buffer_end
 
 void git_oid__writebuf(git_buf *buf, const char *header, const git_oid *oid);
 
+#define GIT_OBJ_WRAPPER(TYPE,OBJTYPE) \
+	int TYPE##_lookup(TYPE **out, git_repository *repo, const git_oid *id) { \
+		return git_object_lookup((git_object **)out, repo, id, OBJTYPE); } \
+	int TYPE##_lookup_prefix(TYPE **out, git_repository *repo, const git_oid *id, size_t len) { \
+		return git_object_lookup_prefix((git_object **)out, repo, id, len, OBJTYPE); } \
+	void TYPE##_free(TYPE *obj) { \
+		git_object_free((git_object *)obj); } \
+	const git_oid *TYPE##_id(const TYPE *obj) { \
+		return git_object_id((const git_object *)obj); } \
+	git_repository *TYPE##_owner(const TYPE *obj) { \
+		return git_object_owner((const git_object *)obj); }
+
 #endif

src/tag.c

@@ -15,6 +15,8 @@
 #include "git2/signature.h"
 #include "git2/odb_backend.h"
 
+GIT_OBJ_WRAPPER(git_tag, GIT_OBJ_TAG)
+
 void git_tag__free(void *_tag)
 {
 	git_tag *tag = _tag;
@@ -24,11 +26,6 @@ void git_tag__free(void *_tag)
 	git__free(tag);
 }
 
-const git_oid *git_tag_id(const git_tag *c)
-{
-	return git_object_id((const git_object *)c);
-}
-
 int git_tag_target(git_object **target, const git_tag *t)
 {
 	assert(t);

src/tree.c

@@ -11,6 +11,8 @@
 #include "git2/repository.h"
 #include "git2/object.h"
 
+GIT_OBJ_WRAPPER(git_tree, GIT_OBJ_TREE)
+
 #define DEFAULT_TREE_SIZE 16
 #define MAX_FILEMODE_BYTES 6
 
@@ -232,16 +234,6 @@ void git_tree__free(void *_tree)
 	git__free(tree);
 }
 
-const git_oid *git_tree_id(const git_tree *t)
-{
-	return git_object_id((const git_object *)t);
-}
-
-git_repository *git_tree_owner(const git_tree *t)
-{
-	return git_object_owner((const git_object *)t);
-}
-
 git_filemode_t git_tree_entry_filemode(const git_tree_entry *entry)
 {
 	return (git_filemode_t)entry->attr;