Update harfbuzz-ng to 0.9.24

third_party/harfbuzz-ng/src/hb-blob.cc

Index: third_party/harfbuzz-ng/src/hb-blob.cc
diff --git a/third_party/harfbuzz-ng/src/hb-blob.cc b/third_party/harfbuzz-ng/src/hb-blob.cc
index f0d3b25274d2b0e239a0a98ea5bd966f421bac9a..da2509cbce0e21367d40c41bd26a3d0b58a508e1 100644
--- a/third_party/harfbuzz-ng/src/hb-blob.cc
+++ b/third_party/harfbuzz-ng/src/hb-blob.cc
@@ -79,6 +79,22 @@ _hb_blob_destroy_user_data (hb_blob_t *blob)
   }
 }
 
+/**
+ * hb_blob_create: (Xconstructor)
+ * @data: (array length=length) (closure user_data) (destroy destroy) (scope notified) (transfer none): Pointer to blob data.
+ * @length: Length of @data in bytes.
+ * @mode: Memory mode for @data.
+ * @user_data: Data parameter to pass to @destroy.
+ * @destroy: Callback to call when @data is not needed anymore.
+ *
+ * Creates a new "blob" object wrapping @data.  The @mode parameter is used
+ * to negotiate ownership and lifecycle of @data.
+ *
+ * Return value: New blob, or the empty blob if something failed or if @length is
+ * zero.  Destroy with hb_blob_destroy().
+ *
+ * Since: 1.0
+ **/
 hb_blob_t *
 hb_blob_create (const char        *data,
 		unsigned int       length,
@@ -112,6 +128,26 @@ hb_blob_create (const char        *data,
   return blob;
 }
 
+/**
+ * hb_blob_create_sub_blob:
+ * @parent: Parent blob.
+ * @offset: Start offset of sub-blob within @parent, in bytes.
+ * @length: Length of sub-blob.
+ *
+ * Returns a blob that represents a range of bytes in @parent.  The new
+ * blob is always created with %HB_MEMORY_MODE_READONLY, meaning that it
+ * will never modify data in the parent blob.  The parent data is not
+ * expected to be modified, and will result in undefined behavior if it
+ * is.
+ *
+ * Makes @parent immutable.
+ *
+ * Return value: New blob, or the empty blob if something failed or if
+ * @length is zero or @offset is beyond the end of @parent's data.  Destroy
+ * with hb_blob_destroy().
+ *
+ * Since: 1.0
+ **/
 hb_blob_t *
 hb_blob_create_sub_blob (hb_blob_t    *parent,
 			 unsigned int  offset,
@@ -133,6 +169,17 @@ hb_blob_create_sub_blob (hb_blob_t    *parent,
   return blob;
 }
 
+/**
+ * hb_blob_get_empty:
+ *
+ * Returns the singleton empty blob.
+ *
+ * See TODO:link object types for more information.
+ *
+ * Return value: (transfer full): the empty blob.
+ *
+ * Since: 1.0
+ **/
 hb_blob_t *
 hb_blob_get_empty (void)
 {
@@ -152,12 +199,36 @@ hb_blob_get_empty (void)
   return const_cast<hb_blob_t *> (&_hb_blob_nil);
 }
 
+/**
+ * hb_blob_reference: (skip)
+ * @blob: a blob.
+ *
+ * Increases the reference count on @blob.
+ *
+ * See TODO:link object types for more information.
+ *
+ * Return value: @blob.
+ *
+ * Since: 1.0
+ **/
 hb_blob_t *
 hb_blob_reference (hb_blob_t *blob)
 {
   return hb_object_reference (blob);
 }
 
+/**
+ * hb_blob_destroy: (skip)
+ * @blob: a blob.
+ *
+ * Descreases the reference count on @blob, and if it reaches zero, destroys
+ * @blob, freeing all memory, possibly calling the destroy-callback the blob
+ * was created for if it has not been called already.
+ *
+ * See TODO:link object types for more information.
+ *
+ * Since: 1.0
+ **/
 void
 hb_blob_destroy (hb_blob_t *blob)
 {
@@ -168,6 +239,18 @@ hb_blob_destroy (hb_blob_t *blob)
   free (blob);
 }
 
+/**
+ * hb_blob_set_user_data: (skip)
+ * @blob: a blob.
+ * @key: key for data to set.
+ * @data: data to set.
+ * @destroy: callback to call when @data is not needed anymore.
+ * @replace: whether to replace an existing data with the same key.
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
 hb_bool_t
 hb_blob_set_user_data (hb_blob_t          *blob,
 		       hb_user_data_key_t *key,
@@ -178,6 +261,17 @@ hb_blob_set_user_data (hb_blob_t          *blob,
   return hb_object_set_user_data (blob, key, data, destroy, replace);
 }
 
+/**
+ * hb_blob_get_user_data: (skip)
+ * @blob: a blob.
+ * @key: key for data to get.
+ *
+ * 
+ *
+ * Return value: (transfer none): 
+ *
+ * Since: 1.0
+ **/
 void *
 hb_blob_get_user_data (hb_blob_t          *blob,
 		       hb_user_data_key_t *key)
@@ -186,6 +280,14 @@ hb_blob_get_user_data (hb_blob_t          *blob,
 }
 
 
+/**
+ * hb_blob_make_immutable:
+ * @blob: a blob.
+ *
+ * 
+ *
+ * Since: 1.0
+ **/
 void
 hb_blob_make_immutable (hb_blob_t *blob)
 {
@@ -195,6 +297,16 @@ hb_blob_make_immutable (hb_blob_t *blob)
   blob->immutable = true;
 }
 
+/**
+ * hb_blob_is_immutable:
+ * @blob: a blob.
+ *
+ * 
+ *
+ * Return value: TODO
+ *
+ * Since: 1.0
+ **/
 hb_bool_t
 hb_blob_is_immutable (hb_blob_t *blob)
 {
@@ -202,12 +314,33 @@ hb_blob_is_immutable (hb_blob_t *blob)
 }
 
 
+/**
+ * hb_blob_get_length:
+ * @blob: a blob.
+ *
+ * 
+ *
+ * Return value: the length of blob data in bytes.
+ *
+ * Since: 1.0
+ **/
 unsigned int
 hb_blob_get_length (hb_blob_t *blob)
 {
   return blob->length;
 }
 
+/**
+ * hb_blob_get_data:
+ * @blob: a blob.
+ * @length: (out):
+ *
+ * 
+ *
+ * Returns: (transfer none) (array length=length): 
+ *
+ * Since: 1.0
+ **/
 const char *
 hb_blob_get_data (hb_blob_t *blob, unsigned int *length)
 {
@@ -217,6 +350,22 @@ hb_blob_get_data (hb_blob_t *blob, unsigned int *length)
   return blob->data;
 }
 
+/**
+ * hb_blob_get_data_writable:
+ * @blob: a blob.
+ * @length: (out): output length of the writable data.
+ *
+ * Tries to make blob data writable (possibly copying it) and
+ * return pointer to data.
+ *
+ * Fails if blob has been made immutable, or if memory allocation
+ * fails.
+ *
+ * Returns: (transfer none) (array length=length): Writable blob data,
+ * or %NULL if failed.
+ *
+ * Since: 1.0
+ **/
 char *
 hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length)
 {
@@ -327,5 +476,3 @@ _try_writable (hb_blob_t *blob)
 
   return true;
 }
-
-