1 files changed, 117 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-wasm-api.hh b/src/3rdparty/harfbuzz-ng/src/hb-wasm-api.hh
new file mode 100644
index 0000000000..4ead01c1f7
--- /dev/null
+++ b/src/3rdparty/harfbuzz-ng/src/hb-wasm-api.hh
@@ -0,0 +1,117 @@
+/*
+ * Copyright © 2023  Behdad Esfahbod
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ */
+
+#ifndef HB_WASM_API_HH
+#define HB_WASM_API_HH
+
+#include "hb.hh"
+
+#include <wasm_export.h>
+
+#define HB_WASM_BEGIN_DECLS namespace hb { namespace wasm {
+#define HB_WASM_END_DECLS }}
+
+#define HB_WASM_API(ret_t, name) HB_INTERNAL ret_t name
+#define HB_WASM_API_COMPOUND(ret_t, name) HB_INTERNAL void name
+
+#define HB_WASM_EXEC_ENV wasm_exec_env_t exec_env,
+#define HB_WASM_EXEC_ENV_COMPOUND wasm_exec_env_t exec_env, ptr_t() retptr,
+
+#define ptr_t(type_t) uint32_t
+#define ptr_d(type_t, name) uint32_t name##ptr
+
+#include "hb-wasm-api.h"
+
+#undef HB_WASM_BEGIN_DECLS
+#undef HB_WASM_END_DECLS
+
+
+enum {
+  hb_wasm_ref_type_none,
+  hb_wasm_ref_type_face,
+  hb_wasm_ref_type_font,
+  hb_wasm_ref_type_buffer,
+};
+
+HB_INTERNAL extern hb_user_data_key_t _hb_wasm_ref_type_key;
+
+#define nullref 0
+
+#define HB_REF2OBJ(obj) \
+  hb_##obj##_t *obj = nullptr; \
+  HB_STMT_START { \
+    (void) wasm_externref_ref2obj (obj##ptr, (void **) &obj); \
+    /* Check object type. */ \
+    /* This works because all our objects have the same hb_object_t layout. */ \
+    if (unlikely (hb_##obj##_get_user_data (obj, &_hb_wasm_ref_type_key) != \
+		  (void *) hb_wasm_ref_type_##obj)) \
+      obj = hb_##obj##_get_empty (); \
+  } HB_STMT_END
+
+#define HB_OBJ2REF(obj) \
+  uint32_t obj##ref = nullref; \
+  HB_STMT_START { \
+    hb_##obj##_set_user_data (obj, &_hb_wasm_ref_type_key, \
+			      (void *) hb_wasm_ref_type_##obj, \
+			      nullptr, false); \
+    (void) wasm_externref_obj2ref (module_inst, obj, &obj##ref); \
+  } HB_STMT_END
+
+#define HB_RETURN_STRUCT(type, name) \
+  type *_name_ptr = nullptr; \
+  { \
+    if (likely (wasm_runtime_validate_app_addr (module_inst, \
+						retptr, sizeof (type)))) \
+    { \
+      _name_ptr = (type *) wasm_runtime_addr_app_to_native (module_inst, retptr); \
+      if (unlikely (!_name_ptr)) \
+	return; \
+    } \
+  } \
+  type &name = *_name_ptr
+
+#define HB_PTR_PARAM(type, name) \
+  type *name = nullptr; \
+  HB_STMT_START { \
+    if (likely (wasm_runtime_validate_app_addr (module_inst, \
+						name##ptr, sizeof (type)))) \
+      name = (type *) wasm_runtime_addr_app_to_native (module_inst, name##ptr); \
+  } HB_STMT_END
+
+#define HB_ARRAY_PARAM(type, name, length) \
+  type *name = nullptr; \
+  HB_STMT_START { \
+    if (likely (!hb_unsigned_mul_overflows (length, sizeof (type)) && \
+		wasm_runtime_validate_app_addr (module_inst, \
+						name##ptr, length * sizeof (type)))) \
+      name = (type *) wasm_runtime_addr_app_to_native (module_inst, name##ptr); \
+  } HB_STMT_END
+
+#define HB_ARRAY_APP2NATIVE(type, name, length) \
+    ((type *) (!hb_unsigned_mul_overflows (length, sizeof (type)) && \
+	       validate_app_addr (name, (length) * sizeof (type)) ? \
+	       addr_app_to_native (name) : nullptr))
+
+
+#endif /* HB_WASM_API_HH */