function globalDefine()

in v4/en/builder/lib/esl.js [305:352]

• 37 lines of code
• 11 McCabe index (conditional complexity)

    function globalDefine(id, dependencies, factory) {
        // define(factory)
        // define(dependencies, factory)
        // define(id, factory)
        // define(id, dependencies, factory)
        if (factory == null) {
            if (dependencies == null) {
                factory = id;
                id = null;
            }
            else {
                factory = dependencies;
                dependencies = null;
                if (id instanceof Array) {
                    dependencies = id;
                    id = null;
                }
            }
        }

        if (factory == null) {
            return;
        }

        var opera = window.opera;

        // IE下通过current script的data-require-id获取当前id
        if (
            !id
            && document.attachEvent
            && (!(opera && opera.toString() === '[object Opera]'))
        ) {
            var currentScript = getCurrentScript();
            id = currentScript && currentScript.getAttribute('data-require-id');
        }

        if (id) {
            modPreDefine(id, dependencies, factory);
        }
        else {
            // 纪录到共享变量中，在load或readystatechange中处理
            // 标准浏览器下，使用匿名define时，将进入这个分支
            wait4PreDefine[0] = {
                deps: dependencies,
                factory: factory
            };
        }
    }