Rename C api

Summary: This renames the core C api to use the new Yoga branding.

Differential Revision: D4259190

fbshipit-source-id: 26c8b356ca464d4304f5f9dc4192bff10cea2dc9

CSSLayout/YGMacros.h

@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+#define YG_EXTERN_C_BEGIN extern "C" {
+#define YG_EXTERN_C_END }
+#else
+#define YG_EXTERN_C_BEGIN
+#define YG_EXTERN_C_END
+#endif
+
+#ifdef _WINDLL
+#define WIN_EXPORT __declspec(dllexport)
+#else
+#define WIN_EXPORT
+#endif
+
+#ifndef FB_ASSERTIONS_ENABLED
+#define FB_ASSERTIONS_ENABLED 1
+#endif
+
+#if FB_ASSERTIONS_ENABLED
+#define YG_ABORT() abort()
+#else
+#define YG_ABORT()
+#endif
+
+#ifndef YG_ASSERT
+#define YG_ASSERT(X, message)              \
+  if (!(X)) {                              \
+    YGLog(YGLogLevelError, "%s", message); \
+    YG_ABORT();                            \
+  }
+#endif