Make logging private

Summary:
@public

Makes logging implementation internal to Yoga.

Breaking changes: removed  `YGLog` and `YGLogWithConfig`.

The upcoming changes to the JNI layer (removal of weak global refs for each node) requires adding additional parameters to the logging functions that will only be available when calculating layout.

Reviewed By: SidharthGuglani

Differential Revision: D14123390

fbshipit-source-id: 468e4a240c190342868ffbb5f8beb92324cdfdd6

yoga/log.cpp

@@ -0,0 +1,60 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the LICENSE
+ * file in the root directory of this source tree.
+ */
+
+#include "log.h"
+
+#include "Yoga.h"
+#include "YGConfig.h"
+#include "YGNode.h"
+
+namespace facebook {
+namespace yoga {
+namespace detail {
+
+namespace {
+
+void vlog(
+    YGConfig* config,
+    YGNode* node,
+    YGLogLevel level,
+    const char* format,
+    va_list args) {
+  YGConfig* logConfig = config != nullptr ? config : YGConfigGetDefault();
+  logConfig->logger(logConfig, node, level, format, args);
+
+  if (level == YGLogLevelFatal) {
+    abort();
+  }
+}
+} // namespace
+
+void Log::log(
+    YGNode* node,
+    YGLogLevel level,
+    const char* format,
+    ...) noexcept {
+  va_list args;
+  va_start(args, format);
+  vlog(
+      node == nullptr ? nullptr : node->getConfig(), node, level, format, args);
+  va_end(args);
+}
+
+void Log::log(
+    YGConfig* config,
+    YGLogLevel level,
+    const char* format,
+    ...) noexcept {
+  va_list args;
+  va_start(args, format);
+  vlog(config, nullptr, level, format, args);
+  va_end(args);
+}
+
+} // namespace detail
+} // namespace yoga
+} // namespace facebook