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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qbs.
**
** $QT_BEGIN_LICENSE:FDL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Free Documentation License Usage
** Alternatively, this file may be used under the terms of the GNU Free
** Documentation License version 1.3 as published by the Free Software
** Foundation and appearing in the file included in the packaging of
** this file. Please review the following information to ensure
** the GNU Free Documentation License version 1.3 requirements
** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
** $QT_END_LICENSE$
**
****************************************************************************/
/*!
    \contentspage list-of-language-items.html
    \previouspage Parameters
    \nextpage Product
    \qmltype Probe
    \inqmlmodule QbsLanguageItems
    \ingroup list-of-items
    \ingroup list-of-probes
    \keyword QML.Probe

    \brief Locates files outside the project.

    Probe items can appear inside \l{Product} and \l{Project} items.
    They are run prior to building, for instance to locate dependent headers, libraries, and other
    files outside the project directory whose locations are not known ahead of time.
    Probes can be parameterized via their properties and typically store results in
    properties as well. These results are then retrieved via the Probe's id, which is mandatory:
    \code
    Product {
        Probe {
            id: valueCalculator
            property string parameter: "whatever"
            property int value
            configure: {
                value = Utils.calculateValue(parameter); // Expensive operation
                found = true;
            }
        }
        property int theValue: valueCalculator.value
    }
    \endcode

    \note Because Probes often invoke external processes, which is relatively expensive compared
          to evaluating normal properties, their results are cached. To force re-evaluation
          of a Probe, you can supply the \l{build-force-probe-execution}
          {--force-probe-execution} command-line option to the \l{build} command.
*/

/*!
    \qmlproperty bool Probe::condition

    Determines whether the probe will actually be run.

    \defaultvalue \c true
*/

/*!
    \qmlproperty bool Probe::found

    Indicates whether the probe was run successfully. Set by \l{configure}.

    \nodefaultvalue
*/

/*!
    \qmlproperty script Probe::configure

    A script that is executed when the probe is run.
*/