/*
 * Copyright (C) 2015 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

WI.ObjectPreview = class ObjectPreview
{
    constructor(type, subtype, description, lossless, overflow, properties, entries, size)
    {
        console.assert(type);
        console.assert(typeof lossless === "boolean");
        console.assert(!properties || !properties.length || properties[0] instanceof WI.PropertyPreview);
        console.assert(!entries || !entries.length || entries[0] instanceof WI.CollectionEntryPreview);

        this._type = type;
        this._subtype = subtype;
        this._description = description || "";
        this._lossless = lossless;
        this._overflow = overflow || false;
        this._size = size;

        this._properties = properties || null;
        this._entries = entries || null;
    }

    // Static

    // Runtime.ObjectPreview.
    static fromPayload(payload)
    {
        if (payload.properties)
            payload.properties = payload.properties.map(WI.PropertyPreview.fromPayload);
        if (payload.entries)
            payload.entries = payload.entries.map(WI.CollectionEntryPreview.fromPayload);

        if (payload.subtype === "array") {
            // COMPATIBILITY (iOS 8): Runtime.ObjectPreview did not have size property,
            // instead it was tacked onto the end of the description, like "Array[#]".
            var match = payload.description.match(/\[(\d+)\]$/);
            if (match) {
                payload.size = parseInt(match[1]);
                payload.description = payload.description.replace(/\[\d+\]$/, "");
            }
        }

        return new WI.ObjectPreview(payload.type, payload.subtype, payload.description, payload.lossless, payload.overflow, payload.properties, payload.entries, payload.size);
    }

    // Public

    get type() { return this._type; }
    get subtype() { return this._subtype; }
    get description() { return this._description; }
    get lossless() { return this._lossless; }
    get overflow() { return this._overflow; }
    get propertyPreviews() { return this._properties; }
    get collectionEntryPreviews() { return this._entries; }
    get size() { return this._size; }

    hasSize()
    {
        return this._size !== undefined && (this._subtype === "array" || this._subtype === "set" || this._subtype === "map" || this._subtype === "weakmap" || this._subtype === "weakset");
    }
};