[wasm-api] Add buffer-contents-free

src/hb-wasm-api-buffer.hh

@@ -33,6 +33,19 @@ namespace hb {
 namespace wasm {
 
 
+void
+buffer_contents_free (HB_WASM_EXEC_ENV
+		      ptr_t(buffer_contents_t) contentsptr)
+{
+  if (unlikely (!validate_app_addr (contentsptr, sizeof (buffer_contents_t))))
+    return;
+
+  buffer_contents_t *contents = (buffer_contents_t *) addr_app_to_native (contentsptr);
+
+  module_free (contents->info);
+  module_free (contents->pos);
+}
+
 void
 buffer_copy_contents (HB_WASM_EXEC_ENV_COMPOUND
 		      ptr_t(buffer_t) bufferref)

src/hb-wasm-api-list.hh

@@ -55,6 +55,7 @@ static NativeSymbol _hb_wasm_native_symbols[] =
   NATIVE_SYMBOL ("(i)",		blob_free),
 
   /* buffer */
+  NATIVE_SYMBOL ("(i)",		buffer_contents_free),
   NATIVE_SYMBOL ("(ii)",	buffer_copy_contents),
 
   /* face */

src/hb-wasm-api.h

@@ -85,7 +85,7 @@ typedef struct
 } blob_t;
 
 HB_WASM_API (void, blob_free) (HB_WASM_EXEC_ENV
-			       ptr_t(blob_t) blob);
+			       ptr_t(blob_t));
 
 
 /* buffer */
@@ -115,7 +115,8 @@ typedef struct
   ptr_t(glyph_position_t) pos;
 } buffer_contents_t;
 
-/* TODO buffer_contents_free */
+HB_WASM_API (void, buffer_contents_free) (HB_WASM_EXEC_ENV
+					  ptr_t(buffer_contents_t));
 
 typedef struct buffer_t buffer_t;
 

src/wasm-sample/shape.c

@@ -25,5 +25,7 @@ shape (font_t *font, buffer_t *buffer)
   for (unsigned i = 0; i < contents.length; i++)
     debugprint2 ("Codepoint", i, contents.info[i].codepoint);
 
+  buffer_contents_free (&contents);
+
   return 1;
 }