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 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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package com.oracle.truffle.js.nodes.access;

import java.util.List;

import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.api.profiles.BranchProfile;
import com.oracle.truffle.api.profiles.ConditionProfile;
import com.oracle.truffle.js.builtins.helper.ListGetNode;
import com.oracle.truffle.js.builtins.helper.ListSizeNode;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.runtime.JSConfig;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.builtins.JSArray;
import com.oracle.truffle.js.runtime.builtins.JSClass;
import com.oracle.truffle.js.runtime.builtins.JSProxy;
import com.oracle.truffle.js.runtime.objects.JSShape;
import com.oracle.truffle.js.runtime.objects.PropertyDescriptor;
import com.oracle.truffle.js.runtime.util.JSClassProfile;
import com.oracle.truffle.js.runtime.util.SimpleArrayList;
import com.oracle.truffle.js.runtime.util.UnmodifiableArrayList;

EnumerableOwnPropertyNames (O, kind).
/**
 * EnumerableOwnPropertyNames (O, kind).
 */
public abstract class EnumerableOwnPropertyNamesNode extends JavaScriptBaseNode {

    private final boolean keys;
    private final boolean values;
    private final JSContext context;
    @Child private JSGetOwnPropertyNode getOwnPropertyNode;
    private final ConditionProfile hasFastShapesProfile = ConditionProfile.createBinaryProfile();
    private final BranchProfile growProfile = BranchProfile.create();

    protected EnumerableOwnPropertyNamesNode(JSContext context, boolean keys, boolean values) {
        this.context = context;
        this.keys = keys;
        this.values = values;
    }

    public static EnumerableOwnPropertyNamesNode createKeys(JSContext context) {
        return EnumerableOwnPropertyNamesNodeGen.create(context, true, false);
    }

    public static EnumerableOwnPropertyNamesNode createValues(JSContext context) {
        return EnumerableOwnPropertyNamesNodeGen.create(context, false, true);
    }

    public static EnumerableOwnPropertyNamesNode createKeysValues(JSContext context) {
        return EnumerableOwnPropertyNamesNodeGen.create(context, true, true);
    }

    public abstract UnmodifiableArrayList<? extends Object> execute(DynamicObject obj);

    @Specialization
    protected UnmodifiableArrayList<? extends Object> enumerableOwnPropertyNames(DynamicObject thisObj,
                    @Cached JSClassProfile jsclassProfile,
                    @Cached ListSizeNode listSize,
                    @Cached ListGetNode listGet,
                    @Cached HasOnlyShapePropertiesNode hasOnlyShapeProperties) {
        JSClass jsclass = jsclassProfile.getJSClass(thisObj);
        if (hasFastShapesProfile.profile(keys && !values && JSConfig.FastOwnKeys && hasOnlyShapeProperties.execute(thisObj, jsclass))) {
            return JSShape.getEnumerablePropertyNames(thisObj.getShape());
        } else {
            boolean isProxy = JSProxy.isJSProxy(thisObj);
            List<Object> ownKeys = jsclass.ownPropertyKeys(thisObj);
            int ownKeysSize = listSize.execute(ownKeys);
            SimpleArrayList<Object> properties = new SimpleArrayList<>();
            for (int i = 0; i < ownKeysSize; i++) {
                Object key = listGet.execute(ownKeys, i);
                if (key instanceof String) {
                    PropertyDescriptor desc = getOwnProperty(thisObj, key);
                    if (desc != null && desc.getEnumerable()) {
                        Object element;
                        if (keys && !values) {
                            element = key;
                        } else {
                            Object value = (desc.isAccessorDescriptor() || isProxy) ? jsclass.get(thisObj, key) : desc.getValue();
                            if (!keys && values) {
                                element = value;
                            } else {
                                assert keys && values;
                                element = JSArray.createConstant(context, new Object[]{key, value});
                            }
                        }
                        properties.add(element, growProfile);
                    }
                }
            }
            return new UnmodifiableArrayList<>(properties.toArray());
        }
    }

    protected PropertyDescriptor getOwnProperty(DynamicObject thisObj, Object key) {
        if (getOwnPropertyNode == null) {
            CompilerDirectives.transferToInterpreterAndInvalidate();
            getOwnPropertyNode = insert(JSGetOwnPropertyNode.create(values, true, false, false, false));
        }
        return getOwnPropertyNode.execute(thisObj, key);
    }
}