Adds Javascript Support

Summary:
- As mentioned in the title, this PR adds Javascript support to Yoga. Two different builds are included in this PR thanks to [nbind](https://github.com/charto/nbind), which conveniently allow to target both Node.js' native addons and browser environments via asmjs with approximately the same codebase. That should solve #215.

- All tests successfully pass on both codepaths. You can run `yarn test:all` inside the `javascript` directory to test it.

- Because of a bug in nbind, the [following PR](https://github.com/charto/nbind/pull/57) needs to be merged and a new version released before this one can be safely merged as well.

- I had to use `double` types instead of `float` in the C++ bindings because of an Emscripten [bug](https://github.com/kripken/emscripten/issues/3592) where symbols aren't correctly exported when using floats.

- There's some tweaks to do before this PR is 100% ready to merge, but I wanted to have your opinion first. What do you think of this?

 ---

To do:

- [x] Ensure th
Closes https://github.com/facebook/yoga/pull/304

Reviewed By: mikearmstrong001

Differential Revision: D4375187

Pulled By: emilsjolander

fbshipit-source-id: 47248558a9506b7c512b5ef281cd12fe1a60cab7

javascript/sources/Layout.hh

@@ -0,0 +1,30 @@
+/**
+ * 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
+
+#include <nbind/api.h>
+#include <nbind/BindDefiner.h>
+
+struct Layout
+{
+    double left;
+    double right;
+
+    double top;
+    double bottom;
+
+    double width;
+    double height;
+
+    void toJS(nbind::cbOutput expose) const
+    {
+        expose(left, right, top, bottom, width, height);
+    }
+};

javascript/sources/Node.cc

@@ -0,0 +1,405 @@
+/**
+ * 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.
+ */
+
+#include <algorithm>
+
+#include <yoga/Yoga.h>
+
+#include "./Node.hh"
+#include "./Layout.hh"
+#include "./Size.hh"
+
+static YGSize globalMeasureFunc(YGNodeRef nodeRef, float width, YGMeasureMode widthMode, float height, YGMeasureMode heightMode)
+{
+    Node const & node = *reinterpret_cast<Node const *>(YGNodeGetContext(nodeRef));
+
+    Size size = node.callMeasureFunc(width, widthMode, height, heightMode);
+    YGSize ygSize = { static_cast<float>(size.width), static_cast<float>(size.height) };
+
+    return ygSize;
+}
+
+/* static */ Node * Node::create(void)
+{
+    return new Node();
+}
+
+/* static */ void Node::destroy(Node * node)
+{
+    delete node;
+}
+
+/* static */ Node * Node::fromYGNode(YGNodeRef nodeRef)
+{
+    return reinterpret_cast<Node *>(YGNodeGetContext(nodeRef));
+}
+
+Node::Node(void)
+: m_node(YGNodeNew())
+, m_measureFunc(nullptr)
+{
+    YGNodeSetContext(m_node, reinterpret_cast<void *>(this));
+}
+
+Node::~Node(void)
+{
+    YGNodeFree(m_node);
+}
+
+void Node::reset(void)
+{
+    m_measureFunc.reset(nullptr);
+
+    YGNodeReset(m_node);
+}
+
+void Node::copyStyle(Node const & other)
+{
+    YGNodeCopyStyle(m_node, other.m_node);
+}
+
+void Node::setPositionType(int positionType)
+{
+    YGNodeStyleSetPositionType(m_node, static_cast<YGPositionType>(positionType));
+}
+
+void Node::setPosition(int edge, double position)
+{
+    YGNodeStyleSetPosition(m_node, static_cast<YGEdge>(edge), position);
+}
+
+void Node::setAlignContent(int alignContent)
+{
+    YGNodeStyleSetAlignContent(m_node, static_cast<YGAlign>(alignContent));
+}
+
+void Node::setAlignItems(int alignItems)
+{
+    YGNodeStyleSetAlignItems(m_node, static_cast<YGAlign>(alignItems));
+}
+
+void Node::setAlignSelf(int alignSelf)
+{
+    YGNodeStyleSetAlignSelf(m_node, static_cast<YGAlign>(alignSelf));
+}
+
+void Node::setFlexDirection(int flexDirection)
+{
+    YGNodeStyleSetFlexDirection(m_node, static_cast<YGFlexDirection>(flexDirection));
+}
+
+void Node::setFlexWrap(int flexWrap)
+{
+    YGNodeStyleSetFlexWrap(m_node, static_cast<YGWrap>(flexWrap));
+}
+
+void Node::setJustifyContent(int justifyContent)
+{
+    YGNodeStyleSetJustifyContent(m_node, static_cast<YGJustify>(justifyContent));
+}
+
+void Node::setMargin(int edge, double margin)
+{
+    YGNodeStyleSetMargin(m_node, static_cast<YGEdge>(edge), margin);
+}
+
+void Node::setOverflow(int overflow)
+{
+    YGNodeStyleSetOverflow(m_node, static_cast<YGOverflow>(overflow));
+}
+
+void Node::setFlex(double flex)
+{
+    YGNodeStyleSetFlex(m_node, flex);
+}
+
+void Node::setFlexBasis(double flexBasis)
+{
+    YGNodeStyleSetFlexBasis(m_node, flexBasis);
+}
+
+void Node::setFlexGrow(double flexGrow)
+{
+    YGNodeStyleSetFlexGrow(m_node, flexGrow);
+}
+
+void Node::setFlexShrink(double flexShrink)
+{
+    YGNodeStyleSetFlexShrink(m_node, flexShrink);
+}
+
+void Node::setWidth(double width)
+{
+    YGNodeStyleSetWidth(m_node, width);
+}
+
+void Node::setHeight(double height)
+{
+    YGNodeStyleSetHeight(m_node, height);
+}
+
+void Node::setMinWidth(double minWidth)
+{
+    YGNodeStyleSetMinWidth(m_node, minWidth);
+}
+
+void Node::setMinHeight(double minHeight)
+{
+    YGNodeStyleSetMinHeight(m_node, minHeight);
+}
+
+void Node::setMaxWidth(double maxWidth)
+{
+    YGNodeStyleSetMaxWidth(m_node, maxWidth);
+}
+
+void Node::setMaxHeight(double maxHeight)
+{
+    YGNodeStyleSetMaxHeight(m_node, maxHeight);
+}
+
+void Node::setAspectRatio(double aspectRatio)
+{
+    YGNodeStyleSetAspectRatio(m_node, aspectRatio);
+}
+
+void Node::setBorder(int edge, double border)
+{
+    YGNodeStyleSetBorder(m_node, static_cast<YGEdge>(edge), border);
+}
+
+void Node::setPadding(int edge, double padding)
+{
+    YGNodeStyleSetPadding(m_node, static_cast<YGEdge>(edge), padding);
+}
+
+int Node::getPositionType(void) const
+{
+    return YGNodeStyleGetPositionType(m_node);
+}
+
+double Node::getPosition(int edge) const
+{
+    return YGNodeStyleGetPosition(m_node, static_cast<YGEdge>(edge));
+}
+
+int Node::getAlignContent(void) const
+{
+    return YGNodeStyleGetAlignContent(m_node);
+}
+
+int Node::getAlignItems(void) const
+{
+    return YGNodeStyleGetAlignItems(m_node);
+}
+
+int Node::getAlignSelf(void) const
+{
+    return YGNodeStyleGetAlignSelf(m_node);
+}
+
+int Node::getFlexDirection(void) const
+{
+    return YGNodeStyleGetFlexDirection(m_node);
+}
+
+int Node::getFlexWrap(void) const
+{
+    return YGNodeStyleGetFlexWrap(m_node);
+}
+
+int Node::getJustifyContent(void) const
+{
+    return YGNodeStyleGetJustifyContent(m_node);
+}
+
+double Node::getMargin(int edge) const
+{
+    return YGNodeStyleGetMargin(m_node, static_cast<YGEdge>(edge));
+}
+
+int Node::getOverflow(void) const
+{
+    return YGNodeStyleGetOverflow(m_node);
+}
+
+double Node::getFlexBasis(void) const
+{
+    return YGNodeStyleGetFlexBasis(m_node);
+}
+
+double Node::getFlexGrow(void) const
+{
+    return YGNodeStyleGetFlexGrow(m_node);
+}
+
+double Node::getFlexShrink(void) const
+{
+    return YGNodeStyleGetFlexShrink(m_node);
+}
+
+double Node::getWidth(void) const
+{
+    return YGNodeStyleGetWidth(m_node);
+}
+
+double Node::getHeight(void) const
+{
+    return YGNodeStyleGetHeight(m_node);
+}
+
+double Node::getMinWidth(void) const
+{
+    return YGNodeStyleGetMinWidth(m_node);
+}
+
+double Node::getMinHeight(void) const
+{
+    return YGNodeStyleGetMinHeight(m_node);
+}
+
+double Node::getMaxWidth(void) const
+{
+    return YGNodeStyleGetMaxWidth(m_node);
+}
+
+double Node::getMaxHeight(void) const
+{
+    return YGNodeStyleGetMaxHeight(m_node);
+}
+
+double Node::getAspectRatio(void) const
+{
+    return YGNodeStyleGetAspectRatio(m_node);
+}
+
+double Node::getBorder(int edge) const
+{
+    return YGNodeStyleGetBorder(m_node, static_cast<YGEdge>(edge));
+}
+
+double Node::getPadding(int edge) const
+{
+    return YGNodeStyleGetPadding(m_node, static_cast<YGEdge>(edge));
+}
+
+void Node::insertChild(Node * child, unsigned index)
+{
+    YGNodeInsertChild(m_node, child->m_node, index);
+}
+
+void Node::removeChild(Node * child)
+{
+    YGNodeRemoveChild(m_node, child->m_node);
+}
+
+unsigned Node::getChildCount(void) const
+{
+    return YGNodeGetChildCount(m_node);
+}
+
+Node * Node::getParent(void)
+{
+    auto nodePtr = YGNodeGetParent(m_node);
+
+    if (nodePtr == nullptr)
+        return nullptr;
+
+    return Node::fromYGNode(nodePtr);
+}
+
+Node * Node::getChild(unsigned index)
+{
+    auto nodePtr = YGNodeGetChild(m_node, index);
+
+    if (nodePtr == nullptr)
+        return nullptr;
+
+    return Node::fromYGNode(nodePtr);
+}
+
+void Node::setMeasureFunc(nbind::cbFunction & measureFunc)
+{
+    m_measureFunc.reset(new nbind::cbFunction(measureFunc));
+
+    YGNodeSetMeasureFunc(m_node, &globalMeasureFunc);
+}
+
+void Node::unsetMeasureFunc(void)
+{
+    m_measureFunc.reset(nullptr);
+
+    YGNodeSetMeasureFunc(m_node, nullptr);
+}
+
+Size Node::callMeasureFunc(double width, int widthMode, double height, int heightMode) const
+{
+    return m_measureFunc->call<Size>(width, widthMode, height, heightMode);
+}
+
+void Node::markDirty(void)
+{
+    YGNodeMarkDirty(m_node);
+}
+
+bool Node::isDirty(void) const
+{
+    return YGNodeIsDirty(m_node);
+}
+
+void Node::calculateLayout(double width, double height, int direction)
+{
+    YGNodeCalculateLayout(m_node, width, height, static_cast<YGDirection>(direction));
+}
+
+double Node::getComputedLeft(void) const
+{
+    return YGNodeLayoutGetLeft(m_node);
+}
+
+double Node::getComputedRight(void) const
+{
+    return YGNodeLayoutGetRight(m_node);
+}
+
+double Node::getComputedTop(void) const
+{
+    return YGNodeLayoutGetTop(m_node);
+}
+
+double Node::getComputedBottom(void) const
+{
+    return YGNodeLayoutGetBottom(m_node);
+}
+
+double Node::getComputedWidth(void) const
+{
+    return YGNodeLayoutGetWidth(m_node);
+}
+
+double Node::getComputedHeight(void) const
+{
+    return YGNodeLayoutGetHeight(m_node);
+}
+
+Layout Node::getComputedLayout(void) const
+{
+    Layout layout;
+
+    layout.left = YGNodeLayoutGetLeft(m_node);
+    layout.right = YGNodeLayoutGetRight(m_node);
+
+    layout.top = YGNodeLayoutGetTop(m_node);
+    layout.bottom = YGNodeLayoutGetBottom(m_node);
+
+    layout.width = YGNodeLayoutGetWidth(m_node);
+    layout.height = YGNodeLayoutGetHeight(m_node);
+
+    return layout;
+}

javascript/sources/Node.hh

@@ -0,0 +1,174 @@
+/**
+ * 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
+
+#include <memory>
+
+#include <nbind/api.h>
+#include <nbind/BindDefiner.h>
+#include <yoga/Yoga.h>
+
+#include "./Layout.hh"
+#include "./Size.hh"
+
+class Node {
+
+ public:
+
+    static Node * create(void);
+    static void destroy(Node * node);
+
+ public:
+
+    static Node * fromYGNode(YGNodeRef nodeRef);
+
+ private:
+
+    Node(void);
+
+ public:
+
+    ~Node(void);
+
+ public: // Prevent accidental copy
+
+    Node(Node const &) = delete;
+
+    Node const & operator=(Node const &) = delete;
+
+ public:
+
+    void reset(void);
+
+ public: // Style setters
+
+    void copyStyle(Node const & other);
+
+    void setPositionType(int positionType);
+    void setPosition(int edge, double position);
+
+    void setAlignContent(int alignContent);
+    void setAlignItems(int alignItems);
+    void setAlignSelf(int alignSelf);
+    void setFlexDirection(int flexDirection);
+    void setFlexWrap(int flexWrap);
+    void setJustifyContent(int justifyContent);
+
+    void setMargin(int edge, double margin);
+
+    void setOverflow(int overflow);
+
+    void setFlex(double flex);
+    void setFlexBasis(double flexBasis);
+    void setFlexGrow(double flexGrow);
+    void setFlexShrink(double flexShrink);
+
+    void setWidth(double width);
+    void setHeight(double height);
+
+    void setMinWidth(double minWidth);
+    void setMinHeight(double minHeight);
+
+    void setMaxWidth(double maxWidth);
+    void setMaxHeight(double maxHeight);
+
+    void setAspectRatio(double aspectRatio);
+
+    void setBorder(int edge, double border);
+
+    void setPadding(int edge, double padding);
+
+ public: // Style getters
+
+    int getPositionType(void) const;
+    double getPosition(int edge) const;
+
+    int getAlignContent(void) const;
+    int getAlignItems(void) const;
+    int getAlignSelf(void) const;
+    int getFlexDirection(void) const;
+    int getFlexWrap(void) const;
+    int getJustifyContent(void) const;
+
+    double getMargin(int edge) const;
+
+    int getOverflow(void) const;
+
+    double getFlexBasis(void) const;
+    double getFlexGrow(void) const;
+    double getFlexShrink(void) const;
+
+    double getWidth(void) const;
+    double getHeight(void) const;
+
+    double getMinWidth(void) const;
+    double getMinHeight(void) const;
+
+    double getMaxWidth(void) const;
+    double getMaxHeight(void) const;
+
+    double getAspectRatio(void) const;
+
+    double getBorder(int edge) const;
+
+    double getPadding(int edge) const;
+
+ public: // Tree hierarchy mutators
+
+    void insertChild(Node * child, unsigned index);
+    void removeChild(Node * child);
+
+ public: // Tree hierarchy inspectors
+
+    unsigned getChildCount(void) const;
+
+    // The following functions cannot be const because they could discard const qualifiers (ex: constNode->getChild(0)->getParent() wouldn't be const)
+
+    Node * getParent(void);
+    Node * getChild(unsigned index);
+
+ public: // Measure func mutators
+
+    void setMeasureFunc(nbind::cbFunction & measureFunc);
+    void unsetMeasureFunc(void);
+
+ public: // Measure func inspectors
+
+    Size callMeasureFunc(double width, int widthMode, double height, int heightMode) const;
+
+ public: // Dirtiness accessors
+
+    void markDirty(void);
+    bool isDirty(void) const;
+
+ public: // Layout mutators
+
+    void calculateLayout(double width, double height, int direction);
+
+ public: // Layout inspectors
+
+    double getComputedLeft(void) const;
+    double getComputedRight(void) const;
+
+    double getComputedTop(void) const;
+    double getComputedBottom(void) const;
+
+    double getComputedWidth(void) const;
+    double getComputedHeight(void) const;
+
+    Layout getComputedLayout(void) const;
+
+ private:
+
+    YGNodeRef m_node;
+
+    std::unique_ptr<nbind::cbFunction> m_measureFunc;
+
+};

javascript/sources/Size.hh

@@ -0,0 +1,36 @@
+/**
+ * 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
+
+#include <nbind/api.h>
+#include <nbind/BindDefiner.h>
+
+struct Size
+{
+    double width;
+    double height;
+
+    Size(void)
+    : width(0.0)
+    , height(0.0)
+    {
+    }
+
+    Size(double width, double height)
+    : width(width)
+    , height(height)
+    {
+    }
+
+    void toJS(nbind::cbOutput expose) const
+    {
+        expose(width, height);
+    }
+};

javascript/sources/entry-browser.js

@@ -0,0 +1,32 @@
+/**
+ * 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.
+ */
+
+var nbind = require('../build/Release/nbind.js');
+
+var ran = false;
+var ret = null;
+
+nbind({}, function (err, result) {
+
+    if (ran)
+        return;
+
+    ran = true;
+
+    if (err)
+        throw err;
+
+    ret = result;
+
+});
+
+if (!ran)
+    throw new Error('Failed to load the yoga module - it needed to be loaded synchronously, but didn\'t');
+
+module.exports = require('./entry-common')(ret.bind, ret.lib);

javascript/sources/entry-common.js

@@ -0,0 +1,205 @@
+/**
+ * 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.
+ */
+
+function patch(prototype, name, fn) {
+
+    let original = prototype[name];
+
+    prototype[name] = function (... args) {
+        return fn.call(this, original, ... args);
+    };
+
+}
+
+module.exports = function (bind, lib) {
+
+    let constants = {};
+
+    constants.ALIGN_AUTO = 0;
+    constants.ALIGN_CENTER = 2;
+    constants.ALIGN_FLEX_END = 3;
+    constants.ALIGN_FLEX_START = 1;
+    constants.ALIGN_STRETCH = 4;
+
+    constants.DIRECTION_INHERIT = 0;
+    constants.DIRECTION_LTR = 1;
+    constants.DIRECTION_RTL = 2;
+
+    constants.EDGE_ALL = 8;
+    constants.EDGE_BOTTOM = 3;
+    constants.EDGE_END = 5;
+    constants.EDGE_HORIZONTAL = 6;
+    constants.EDGE_LEFT = 0;
+    constants.EDGE_RIGHT = 2;
+    constants.EDGE_START = 4;
+    constants.EDGE_TOP = 1;
+    constants.EDGE_VERTICAL = 7;
+
+    constants.FEATURE_ROUNDING = 0;
+    constants.FEATURE_WEB_FLEX_BASIS = 1;
+
+    constants.FLEX_DIRECTION_COLUMN = 0;
+    constants.FLEX_DIRECTION_COLUMN_REVERSE = 1;
+    constants.FLEX_DIRECTION_ROW = 2;
+    constants.FLEX_DIRECTION_ROW_REVERSE = 3;
+
+    constants.JUSTIFY_CENTER = 1;
+    constants.JUSTIFY_FLEX_END = 2;
+    constants.JUSTIFY_FLEX_START = 0;
+    constants.JUSTIFY_SPACE_AROUND = 4;
+    constants.JUSTIFY_SPACE_BETWEEN = 3;
+
+    constants.MEASURE_MODE_UNDEFINED = 0;
+    constants.MEASURE_MODE_EXACTLY = 1;
+    constants.MEASURE_MODE_AT_MOST = 2;
+
+    constants.OVERFLOW_HIDDEN = 1;
+    constants.OVERFLOW_VISIBLE = 0;
+    constants.OVERFLOW_SCROLL = 2;
+
+    constants.POSITION_TYPE_ABSOLUTE = 1;
+    constants.POSITION_TYPE_RELATIVE = 0;
+
+    constants.WRAP_NO_WRAP = 0;
+    constants.WRAP_WRAP = 1;
+
+    constants.UNDEFINED = NaN;
+
+    class Layout {
+
+        constructor(left, right, top, bottom, width, height) {
+
+            this.left = left;
+            this.right = right;
+
+            this.top = top;
+            this.bottom = bottom;
+
+            this.width = width;
+            this.height = height;
+
+        }
+
+        fromJS(expose) {
+
+            expose(this.left, this.right, this.top, this.bottom, this.width, this.height);
+
+        }
+
+        toString() {
+
+            return `<Layout#${this.left}:${this.right};${this.top}:${this.bottom};${this.width}:${this.height}>`;
+
+        }
+
+    }
+
+    class Size {
+
+        static fromJS({ width, height }) {
+
+            return new Size(width, height);
+
+        }
+
+        constructor(width, height) {
+
+            this.width = width;
+            this.height = height;
+
+        }
+
+        fromJS(expose) {
+
+            expose(this.width, this.height);
+
+        }
+
+        toString() {
+
+            return `<Size#${this.width}x${this.height}>`;
+
+        }
+
+    }
+
+    patch(lib.Node.prototype, `free`, function () {
+
+        // Since we handle the memory allocation ourselves (via lib.Node.create), we also need to handle the deallocation
+
+        lib.Node.destroy(this);
+
+    });
+
+    patch(lib.Node.prototype, `freeRecursive`, function () {
+
+        for (let t = 0, T = this.getChildCount(); t < T; ++t)
+            this.getChild(0).freeRecursive();
+
+        this.free();
+
+    });
+
+    patch(lib.Node.prototype, `setMeasureFunc`, function (original, measureFunc) {
+
+        // This patch is just a convenience patch, since it helps write more idiomatic source code (such as .setMeasureFunc(null))
+        // We also automatically convert the return value of the measureFunc to a Size object, so that we can return anything that has .width and .height properties
+
+        if (measureFunc) {
+            return original.call(this, (... args) => Size.fromJS(measureFunc(... args)));
+        } else {
+            return this.unsetMeasureFunc();
+        }
+
+    });
+
+    patch(lib.Node.prototype, `calculateLayout`, function (original, width = constants.UNDEFINED, height = constants.UNDEFINED, direction = constants.DIRECTION_LTR) {
+
+        // Just a small patch to add support for the function default parameters
+
+        return original.call(this, width, height, direction);
+
+    });
+
+    function setExperimentalFeatureEnabled(... args) {
+
+        return lib.setExperimentalFeatureEnabled(... args);
+
+    }
+
+    function isExperimentalFeatureEnabled(... args) {
+
+        return lib.isExperimentalFeatureEnabled(... args);
+
+    }
+
+    function getInstanceCount(... args) {
+
+        return lib.getInstanceCount(... args);
+
+    }
+
+    bind(`Layout`, Layout);
+    bind(`Size`, Size);
+
+    return Object.assign({
+
+        Node: lib.Node,
+
+        Layout,
+        Size,
+
+        setExperimentalFeatureEnabled,
+        isExperimentalFeatureEnabled,
+
+        getInstanceCount
+
+    }, constants);
+
+};

javascript/sources/entry-node.js

@@ -0,0 +1,13 @@
+/**
+ * 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.
+ */
+
+var nbind = require('nbind');
+var ret = nbind.init(__dirname + '/../');
+
+module.exports = require('./entry-common')(ret.bind, ret.lib);

javascript/sources/global.cc

@@ -0,0 +1,27 @@
+/**
+ * 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.
+ */
+
+#include <yoga/Yoga.h>
+
+#include "./global.hh"
+
+void setExperimentalFeatureEnabled(int feature, bool enabled)
+{
+    YGSetExperimentalFeatureEnabled(static_cast<YGExperimentalFeature>(feature), enabled);
+}
+
+bool isExperimentalFeatureEnabled(int feature)
+{
+    return YGIsExperimentalFeatureEnabled(static_cast<YGExperimentalFeature>(feature));
+}
+
+unsigned getInstanceCount(void)
+{
+    return YGNodeGetInstanceCount();
+}

javascript/sources/global.hh

@@ -0,0 +1,15 @@
+/**
+ * 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
+
+void setExperimentalFeatureEnabled(int feature, bool enabled);
+bool isExperimentalFeatureEnabled(int feature);
+
+unsigned getInstanceCount(void);

javascript/sources/nbind.cc

@@ -0,0 +1,139 @@
+/**
+ * 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.
+ */
+
+#include <yoga/Yoga.h>
+
+#include "./Node.hh"
+#include "./Layout.hh"
+#include "./Size.hh"
+#include "./global.hh"
+
+#define NBIND_DUPLICATE_POINTERS true
+
+#include <nbind/nbind.h>
+
+NBIND_GLOBAL()
+{
+    function(setExperimentalFeatureEnabled);
+    function(isExperimentalFeatureEnabled);
+    function(getInstanceCount);
+}
+
+NBIND_CLASS(Size)
+{
+    construct<>();
+    construct<double, double>();
+}
+
+NBIND_CLASS(Layout)
+{
+    construct<>();
+}
+
+NBIND_CLASS(Node)
+{
+    method(create);
+    method(destroy);
+
+    method(reset);
+
+    method(copyStyle);
+
+    method(setPositionType);
+    method(setPosition);
+
+    method(setAlignContent);
+    method(setAlignItems);
+    method(setAlignSelf);
+    method(setFlexDirection);
+    method(setFlexWrap);
+    method(setJustifyContent);
+
+    method(setMargin);
+
+    method(setOverflow);
+
+    method(setFlex);
+    method(setFlexBasis);
+    method(setFlexGrow);
+    method(setFlexShrink);
+
+    method(setWidth);
+    method(setHeight);
+
+    method(setMinWidth);
+    method(setMinHeight);
+
+    method(setMaxWidth);
+    method(setMaxHeight);
+
+    method(setAspectRatio);
+
+    method(setBorder);
+
+    method(setPadding);
+
+    method(getPositionType);
+    method(getPosition);
+
+    method(getAlignContent);
+    method(getAlignItems);
+    method(getAlignSelf);
+    method(getFlexDirection);
+    method(getFlexWrap);
+    method(getJustifyContent);
+
+    method(getMargin);
+
+    method(getFlexBasis);
+    method(getFlexGrow);
+    method(getFlexShrink);
+
+    method(getWidth);
+    method(getHeight);
+
+    method(getMinWidth);
+    method(getMinHeight);
+
+    method(getMaxWidth);
+    method(getMaxHeight);
+
+    method(getAspectRatio);
+
+    method(getBorder);
+
+    method(getPadding);
+
+    method(insertChild);
+    method(removeChild);
+
+    method(getChildCount);
+
+    method(getParent);
+    method(getChild);
+
+    method(setMeasureFunc);
+    method(unsetMeasureFunc);
+
+    method(markDirty);
+    method(isDirty);
+
+    method(calculateLayout);
+
+    method(getComputedLeft);
+    method(getComputedRight);
+
+    method(getComputedTop);
+    method(getComputedBottom);
+
+    method(getComputedWidth);
+    method(getComputedHeight);
+
+    method(getComputedLayout);
+}