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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
 * one is included with the Software each a "Larger Work" to which the Software
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package com.oracle.truffle.js.runtime.objects;

import com.oracle.truffle.api.strings.TruffleString;
import com.oracle.truffle.js.runtime.Strings;

public final class JSAttributes {
    /**
     * ES5 8.6.1 Property Attributes.
     */
    public static final TruffleString VALUE = Strings.VALUE;
    public static final TruffleString GET = Strings.GET;
    public static final TruffleString SET = Strings.SET;
    public static final TruffleString WRITABLE = Strings.constant("writable");
    public static final TruffleString ENUMERABLE = Strings.constant("enumerable");
    public static final TruffleString CONFIGURABLE = Strings.constant("configurable");

    /** ES5 8.6.1 - Is this property not enumerable? */
    public static final int NOT_ENUMERABLE = 1 << 0;

    /** ES5 8.6.1 - Is this property not configurable? */
    public static final int NOT_CONFIGURABLE = 1 << 1;

    /** ES5 8.6.1 - Is this property not writable? */
    public static final int NOT_WRITABLE = 1 << 2;

    public static final int ATTRIBUTES_MASK = NOT_ENUMERABLE | NOT_CONFIGURABLE | NOT_WRITABLE;

    private JSAttributes() {
    }

    public static int getDefault() {
        return configurableEnumerableWritable();
    }

    public static int getDefaultNotEnumerable() {
        return configurableNotEnumerableWritable();
    }

    public static int configurableEnumerableWritable() {
        return CONFIGURABLE_ENUMERABLE_WRITABLE;
    }

    public static int configurableNotEnumerableWritable() {
        return CONFIGURABLE_NOT_ENUMERABLE_WRITABLE;
    }

    public static int configurableEnumerableNotWritable() {
        return CONFIGURABLE_ENUMERABLE_NOT_WRITABLE;
    }

    public static int configurableNotEnumerableNotWritable() {
        return CONFIGURABLE_NOT_ENUMERABLE_NOT_WRITABLE;
    }

    public static int notConfigurableNotEnumerableNotWritable() {
        return NOT_CONFIGURABLE_NOT_ENUMERABLE_NOT_WRITABLE;
    }

    public static int notConfigurableNotEnumerableWritable() {
        return NOT_CONFIGURABLE_NOT_ENUMERABLE_WRITABLE;
    }

    public static int notConfigurableEnumerableWritable() {
        return NOT_CONFIGURABLE_ENUMERABLE_WRITABLE;
    }

    public static int notConfigurableEnumerableNotWritable() {
        return NOT_CONFIGURABLE_ENUMERABLE_NOT_WRITABLE;
    }

    public static int notConfigurableNotEnumerable() {
        return notConfigurableNotEnumerableWritable();
    }

    public static int configurableNotEnumerable() {
        return configurableNotEnumerableWritable();
    }

    public static int fromConfigurableEnumerableWritable(boolean configurable, boolean enumerable, boolean writable) {
        return (!configurable ? NOT_CONFIGURABLE : 0) | (!enumerable ? NOT_ENUMERABLE : 0) | (!writable ? NOT_WRITABLE : 0);
    }

    public static int fromConfigurableEnumerable(boolean configurable, boolean enumerable) {
        return (!configurable ? NOT_CONFIGURABLE : 0) | (!enumerable ? NOT_ENUMERABLE : 0);
    }

    public static boolean isConfigurable(int flags) {
        return (flags & NOT_CONFIGURABLE) == 0;
    }

    public static boolean isEnumerable(int flags) {
        return (flags & NOT_ENUMERABLE) == 0;
    }

    public static boolean isWritable(int flags) {
        return (flags & NOT_WRITABLE) == 0;
    }

    private static final int NOT_CONFIGURABLE_ENUMERABLE_WRITABLE = NOT_CONFIGURABLE;
    private static final int NOT_CONFIGURABLE_ENUMERABLE_NOT_WRITABLE = NOT_CONFIGURABLE | NOT_WRITABLE;
    private static final int NOT_CONFIGURABLE_NOT_ENUMERABLE_WRITABLE = NOT_CONFIGURABLE | NOT_ENUMERABLE;
    private static final int NOT_CONFIGURABLE_NOT_ENUMERABLE_NOT_WRITABLE = NOT_CONFIGURABLE | NOT_ENUMERABLE | NOT_WRITABLE;
    private static final int CONFIGURABLE_NOT_ENUMERABLE_WRITABLE = NOT_ENUMERABLE;
    private static final int CONFIGURABLE_NOT_ENUMERABLE_NOT_WRITABLE = NOT_ENUMERABLE | NOT_WRITABLE;
    private static final int CONFIGURABLE_ENUMERABLE_NOT_WRITABLE = NOT_WRITABLE;
    private static final int CONFIGURABLE_ENUMERABLE_WRITABLE = 0;
}