Move configuration to new YGConfig and pass them down to CalculateLayout

Summary:
Move configuration to new ```YGConfig``` and pass them down to CalculateLayout. See #418 .

Adds ```YGConfigNew()``` + ```YGConfigFree```, and changed ```YGSetExperimentalFeatureEnabled``` to use the config.

New function for calculation is ```YGNodeCalculateLayoutWithConfig```.
Closes https://github.com/facebook/yoga/pull/432

Reviewed By: astreet

Differential Revision: D4611359

Pulled By: emilsjolander

fbshipit-source-id: a1332f0e1b21cec02129dd021ee57408449e10b0

java/com/facebook/yoga/YogaConfig.java

@@ -0,0 +1,49 @@
+/**
+ * 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.
+ */
+
+package com.facebook.yoga;
+
+import com.facebook.proguard.annotations.DoNotStrip;
+import com.facebook.soloader.SoLoader;
+
+@DoNotStrip
+public class YogaConfig {
+
+  static {
+    SoLoader.loadLibrary("yoga");
+  }
+
+  long mNativePointer;
+
+  private native long jni_YGConfigNew();
+  public YogaConfig() {
+    mNativePointer = jni_YGConfigNew();
+    if (mNativePointer == 0) {
+      throw new IllegalStateException("Failed to allocate native memory");
+    }
+  }
+
+  private native void jni_YGConfigFree(long nativePointer);
+  @Override
+  protected void finalize() throws Throwable {
+    try {
+      jni_YGConfigFree(mNativePointer);
+    } finally {
+      super.finalize();
+    }
+  }
+
+  private native void jni_YGConfigSetExperimentalFeatureEnabled(
+      long nativePointer,
+      int feature,
+      boolean enabled);
+  public void setExperimentalFeatureEnabled(YogaExperimentalFeature feature, boolean enabled) {
+    jni_YGConfigSetExperimentalFeatureEnabled(mNativePointer, feature.intValue(), enabled);
+  }
+}

java/com/facebook/yoga/YogaNode.java

@@ -35,20 +35,6 @@ public class YogaNode implements YogaNodeAPI<YogaNode> {
     jni_YGSetLogger(logger);
   }
 
-  private static native void jni_YGSetExperimentalFeatureEnabled(
-      int feature,
-      boolean enabled);
-  public static void setExperimentalFeatureEnabled(
-      YogaExperimentalFeature feature,
-      boolean enabled) {
-    jni_YGSetExperimentalFeatureEnabled(feature.intValue(), enabled);
-  }
-
-  private static native boolean jni_YGIsExperimentalFeatureEnabled(int feature);
-  public static boolean isExperimentalFeatureEnabled(YogaExperimentalFeature feature) {
-    return jni_YGIsExperimentalFeatureEnabled(feature.intValue());
-  }
-
   private YogaNode mParent;
   private List<YogaNode> mChildren;
   private YogaMeasureFunction mMeasureFunction;
@@ -104,6 +90,14 @@ public class YogaNode implements YogaNodeAPI<YogaNode> {
     }
   }
 
+  private native long jni_YGNodeNewWithConfig(long configPointer);
+  public YogaNode(YogaConfig config) {
+    mNativePointer = jni_YGNodeNewWithConfig(config.mNativePointer);
+    if (mNativePointer == 0) {
+      throw new IllegalStateException("Failed to allocate native memory");
+    }
+  }
+
   private native void jni_YGNodeFree(long nativePointer);
   @Override
   protected void finalize() throws Throwable {