Google Apps 脚本 运行 保护多个范围时时间很慢

Google Apps Script run time very slow when protecting multiple ranges

目前，我有一个 Google 脚本，我必须在一个作品中为多个 sheet 的多个人保护多个范围 sheet。

这是我现在拥有的代码：

function setPermissions () {

for (var number = 1; number < 30; number++) {   

    var n = number.toString();

    var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName(n);

    var protectionDescription = 'Initial Sheet Protection - Script'

    var protectedRangesArray = [
        'A1:F5',
        'G1:G4',
        'H1:K5',
        'L1:L2',
        'M1:N5',
        'A6:P8',
        'A7:B61',
        'A62:P62',
        'O9:O61',
        'F9:F11',
        'A1:P2'
    ];

    for (var i = 0; i < protectedRangesArray.length; i++) {
        var range = sheet.getRange(protectedRangesArray[i]);
        var protection = range.protect().setDescription(protectionDescription);

        protection.removeEditors(protection.getEditors());

    };

    // = Everything else is repeated from here so you really only need to look at the above code.
    var protectedRangesArray = [
        'C9:E61',
        'F12:F61',
        'G9:H61',
        'P9:P61',
        'O3:P5'

    ];

    for (var i = 0; i < protectedRangesArray.length; i++) {
        var range = sheet.getRange(protectedRangesArray[i]);
        var protection = range.protect().setDescription(protectionDescription);

        protection.addEditors([
            saEmail,
            amEmail,
            bmEmail,
            meEmail
        ]);

        protection.removeEditors([
            brEmail
        ]);  
    };

    // =====
    var protectedRangesArray = [
        'K9:N61'
    ];

    for (var i = 0; i < protectedRangesArray.length; i++) {
        var range = sheet.getRange(protectedRangesArray[i]);
        var protection = range.protect().setDescription(protectionDescription);

        protection.addEditors([
            bmEmail,
            brEmail
        ]);

        protection.removeEditors([
            saEmail,
            amEmail,
            meEmail
        ]);
    };

    // =====
    var protectedRangesArray = [
        'G5:G5'
    ];

    for (var i = 0; i < protectedRangesArray.length; i++) {
        var range = sheet.getRange(protectedRangesArray[i]);
        var protection = range.protect().setDescription(protectionDescription);

        protection.addEditors([
            amEmail,
            bmEmail,
            meEmail
        ]);

        protection.removeEditors([
            saEmail,
            brEmail
        ]);
    };

    // =====
    var protectedRangesArray = [
        'L3:L3'
    ];

    for (var i = 0; i < protectedRangesArray.length; i++) {
        var range = sheet.getRange(protectedRangesArray[i]);
        var protection = range.protect().setDescription(protectionDescription);

        protection.addEditors([
            amEmail,
            bmEmail,
            meEmail
        ]);

        protection.removeEditors([
            saEmail,
            brEmail
        ]);
    };

    // =====
    var protectedRangesArray = [
        'L4:L4'
    ];

    for (var i = 0; i < protectedRangesArray.length; i++) {
        var range = sheet.getRange(protectedRangesArray[i]);
        var protection = range.protect().setDescription(protectionDescription);

        protection.addEditors([
            bmEmail,
            meEmail
        ]);

        protection.removeEditors([
            saEmail,
            amEmail,
            brEmail
        ]);
    };

    // =====
    var protectedRangesArray = [
        'L5:L5',
        'I9:J61'
    ];

    for (var i = 0; i < protectedRangesArray.length; i++) {
        var range = sheet.getRange(protectedRangesArray[i]);
        var protection = range.protect().setDescription(protectionDescription);

        protection.addEditors([
            meEmail
        ]);

        protection.removeEditors([
            saEmail,
            amEmail,
            bmEmail,
            brEmail
        ]);
    };

  };
};

可以理解，代码需要 非常 的时间。

我想弄清楚的是如何减少我在整个脚本中进行的 getRange() 调用次数。据我了解，这会极大地减慢脚本的速度。

我在将 var range 定义为 sheet.getRange(1,1,62,16) 后尝试了 var protection = range[0][0].protect().setDescription(protectionDescription);，但出现错误 无法从未定义的 [= 中读取 属性“0” 34=]。

有什么加速这个功能的方法吗？现在，我一次做一个 sheet（每个 sheet 大约需要 5 分钟）。

编辑：这是为所有关心的人更新的（速度更快的代码）（感谢 BMcV）：

function setPermissions() {

    var worksheet = SpreadsheetApp.getActiveSpreadsheet();
    var protectionDescription = 'Initial Sheet Protection - Script';
    var protectedRangesArray = [];
    var addEditorsArray = [];
    var removeEditorsArray = [];

    for (var number = 0; number < 30; number++) {
        var sheet = worksheet.getSheetByName(number.toString());

        protectedRangesArray = [
            [//0
                'A1:F5',
                'G1:G4',
                'H1:K5',
                'L1:L2',
                'M1:N5',
                'A6:P8',
                'A7:B61',
                'A62:P62',
                'O9:O61',
                'F9:F11',
                'A1:P2'], 
            [//1
                'C9:E61',
                'F12:F61',
                'G9:H61',
                'P9:P61',
                'O3:P5'], 
            [//2
                'K9:N61'], 
            [//3
                'G5:G5'], 
            [//4
                'L3:L3'], 
            [//5
                'L4:L4'],
            [//6
                'L5:L5',
                'I9:J61']

        ];

        addEditorsArray = [
            [], //0
            [saEmail, amEmail, bmEmail, meEmail], //1
            [bmEmail, brEmail], //2
            [amEmail, bmEmail, meEmail], //3
            [amEmail, bmEmail, meEmail], //4
            [bmEmail, meEmail], //5
            [meEmail] //6
        ];

        removeEditorsArray = [
            [saEmail, amEmail, bmEmail, brEmail, meEmail], //0
            [brEmail], //1
            [saEmail, amEmail, meEmail], //2
            [saEmail, brEmail], //3
            [saEmail, brEmail], //4
            [saEmail, amEmail, brEmail], //5
            [saEmail, amEmail, bmEmail, brEmail] //6
        ];

        protectRanges(sheet, protectionDescription, protectedRangesArray, addEditorsArray, removeEditorsArray)

    };   
};

function protectRanges(sheet, protectionDescription, protectedRangesArray, addEditorsArray, removeEditorsArray) {
    var i = 0, n,
    len = protectedRangesArray.length, 
    range, protection;
    for (i; i < len; i++) {
        n = 0
        for (n; n < protectedRangesArray[i].length; n++) {
            range = sheet.getRange(protectedRangesArray[i][n]);
            protection = range.protect().setDescription(protectionDescription);
            protection.addEditors(addEditorsArray[i]);
            protection.removeEditors(removeEditorsArray[i]);
        }
    }
}

有几件事可能有助于使脚本更高效，而且很可能更快。

充分利用 hoisting。在此脚本的许多区域中，多次定义变量。这样做会更好：

var number = 1; // Some code here involving number
number = 10;    // notice no var at the start!

这个函数也应该拆分成几个辅助函数。这将有助于使您的代码更具可读性和更易于维护。 

function protectRanges(sheet, protectionDescription, protectedRangesArray) {
    var i = 0,
    len = protectedRangesArray.length,
    range, protection;
    for (i; i < len; i++) {
        range = sheet.getRange(protectedRangesArray[i]);
        protection = range.protect().setDescription(protectionDescription);
        protection.removeEditors(protection.getEditors());
    }
}

这样至少不用再一遍又一遍的写代码了。这个概念叫做 DRY（不要重复自己）。只要有可能，将重复的代码移到一个单独的函数中。现在，将更容易找到提高性能的方法。

可能有帮助的一件事是将电子表格定义移到循环之外。目前SpreadsheetApp.getActiveSpreadsheet()调用了30次，只需要调用1次。

主要是简化功能。