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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.array;

import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.ImportStatic;
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.nodes.UnexpectedResultException;
import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.nodes.access.PropertyNode;
import com.oracle.truffle.js.nodes.array.ArrayLengthNode.ArrayLengthReadNode;
import com.oracle.truffle.js.nodes.cast.JSToLengthNode;
import com.oracle.truffle.js.nodes.cast.JSToUInt32Node;
import com.oracle.truffle.js.nodes.interop.ImportValueNode;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.JSRuntime;
import com.oracle.truffle.js.runtime.builtins.JSAbstractArray;
import com.oracle.truffle.js.runtime.builtins.JSArray;
import com.oracle.truffle.js.runtime.interop.JSInteropUtil;

@ImportStatic(JSInteropUtil.class)
abstract class GetLengthHelperNode extends JavaScriptBaseNode {

    private final JSContext context;

    @Child private JSToUInt32Node toUInt32Node;
    @Child private JSToLengthNode toLengthNode;

    
Apply ES6 ToLength. /** Apply ES6 ToLength. */
    private final boolean toLength;

    GetLengthHelperNode(JSContext context) {
        this.context = context;
        this.toLength = context.getEcmaScriptVersion() >= 6;
    }

    public static GetLengthHelperNode create(JSContext context) {
        return GetLengthHelperNodeGen.create(context);
    }

    public abstract Object execute(Object value, boolean isArray);

    public final long executeLong(Object value, boolean isArray) {
        return toLengthLong(execute(value, isArray));
    }

    @Specialization(guards = "isArray", rewriteOn = UnexpectedResultException.class)
    public int getArrayLengthInt(DynamicObject target, @SuppressWarnings("unused") boolean isArray,
                    @Cached("create()") ArrayLengthReadNode arrayLengthReadNode) throws UnexpectedResultException {
        return arrayLengthReadNode.executeInt(target);
    }

    @Specialization(guards = "isArray")
    public double getArrayLength(DynamicObject target, @SuppressWarnings("unused") boolean isArray,
                    @Cached("create()") ArrayLengthReadNode arrayLengthReadNode) {
        return arrayLengthReadNode.executeDouble(target);
    }

    @Specialization(guards = "!isArray")
    public double getLengthDynamicObject(DynamicObject target, @SuppressWarnings("unused") boolean isArray,
                    @Cached("createLengthProperty()") PropertyNode getLengthPropertyNode) {
        return toLengthDouble(getLengthPropertyNode.executeWithTarget(target));
    }

    @Specialization(guards = "!isDynamicObject(target)", limit = "3")
    public double getLengthForeign(Object target, @SuppressWarnings("unused") boolean isArray,
                    @CachedLibrary("target") InteropLibrary interop,
                    @Cached("create()") ImportValueNode importValueNode) {
        if (interop.hasArrayElements(target)) {
            return JSInteropUtil.getArraySize(target, interop, this);
        } else {
            return toLengthDouble(JSInteropUtil.readMemberOrDefault(target, JSAbstractArray.LENGTH, 0, interop, importValueNode, this));
        }
    }

    protected PropertyNode createLengthProperty() {
        return PropertyNode.createProperty(context, null, JSArray.LENGTH);
    }

    private double toUInt32Double(Object target) {
        return JSRuntime.doubleValue((Number) getUInt32Node().execute(target));
    }

    private long toUInt32Long(Object target) {
        return JSRuntime.longValue((Number) getUInt32Node().execute(target));
    }

    private double toLengthDouble(Object target) {
        if (toLength) {
            return getToLengthNode().executeLong(target);
        } else {
            return toUInt32Double(target);
        }
    }

    private long toLengthLong(Object target) {
        if (toLength) {
            return getToLengthNode().executeLong(target);
        } else {
            return toUInt32Long(target);
        }
    }

    private JSToLengthNode getToLengthNode() {
        if (toLengthNode == null) {
            CompilerDirectives.transferToInterpreterAndInvalidate();
            toLengthNode = insert(JSToLengthNode.create());
        }
        return toLengthNode;
    }

    private JSToUInt32Node getUInt32Node() {
        if (toUInt32Node == null) {
            CompilerDirectives.transferToInterpreterAndInvalidate();
            toUInt32Node = insert(JSToUInt32Node.create());
        }
        return toUInt32Node;
    }
}