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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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package com.oracle.truffle.js.nodes.unary;

import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.library.CachedLibrary;
import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.nodes.access.IsArrayNode;
import com.oracle.truffle.js.runtime.JSRuntime;

ES6 7.2.2 IsArray(argument).
See Also:
IsArrayNode/**
 * ES6 7.2.2 IsArray(argument).
 *
 * @see IsArrayNode
 */
public abstract class JSIsArrayNode extends JavaScriptBaseNode {

    final boolean jsType;

    protected JSIsArrayNode(boolean jsType) {
        this.jsType = jsType;
    }

    public abstract boolean execute(Object operand);

    @SuppressWarnings("unused")
    @Specialization(guards = {"!cachedIsProxy", "cachedClass != null", "cachedClass.isInstance(object)"}, limit = "1")
    protected static boolean doIsArrayClass(Object object,
                    @Cached("getClassIfJSDynamicObject(object)") Class<?> cachedClass,
                    @Cached("isJSArray(object)") boolean cachedIsArray,
                    @Cached("isJSProxy(object)") boolean cachedIsProxy) {
        return cachedIsArray;
    }

    @Specialization(guards = {"isJSArray(object)"}, replaces = {"doIsArrayClass"})
    protected boolean doJSArray(@SuppressWarnings("unused") Object object) {
        return true;
    }

    @Specialization(guards = {"isJSProxy(object)"})
    protected boolean doJSProxy(DynamicObject object) {
        return JSRuntime.isProxyAnArray(object);
    }

    @Specialization(guards = {"isJSDynamicObject(object)", "!isJSArray(object)", "!isJSProxy(object)"}, replaces = {"doIsArrayClass"})
    protected boolean doJSObject(DynamicObject object) {
        assert !JSRuntime.isArray(object);
        return false;
    }

    @Specialization(guards = {"!isJSDynamicObject(object)", "jsType"})
    protected boolean doNotObject(Object object) {
        assert !JSRuntime.isArray(object) || JSRuntime.isForeignObject(object);
        return false;
    }

    @Specialization(guards = {"!isJSDynamicObject(object)", "!jsType"})
    protected boolean doPrimitiveOrForeign(Object object,
                    @CachedLibrary(limit = "6") InteropLibrary interop) {
        return interop.hasArrayElements(object);
    }

    public static JSIsArrayNode createIsArrayLike() {
        return JSIsArrayNodeGen.create(false);
    }

    public static JSIsArrayNode createIsArray() {
        return JSIsArrayNodeGen.create(true);
    }
}