portal/public/external/kityformula-editor/dev-lib/cmd-define.js

/**
 * cmd 内部定义
 * build用
 */

// 模块存储
var _modules = {};

function define ( id, deps, factory ) {

    _modules[ id ] = {

        exports: {},
        value: null,
        factory: null

    };

    if ( arguments.length === 2 ) {

        factory = deps;

    }

    if ( _modules.toString.call( factory ) === '[object Object]' ) {

        _modules[ id ][ 'value' ] = factory;

    } else if ( typeof factory === 'function' ) {

        _modules[ id ][ 'factory' ] = factory;

    } else {

        throw new Error( 'define函数未定义的行为' );

    }

}

function require ( id ) {

    var module = _modules[ id ],
        exports = null;

    if ( !module ) {

        return null;

    }

    if ( module.value ) {

        return module.value;

    }

    exports = module.factory.call( null, require, module.exports, module );

    // return 值不为空， 则以return值为最终值
    if ( exports ) {

        module.exports = exports;

    }

    module.value = module.exports;

    return module.value;

}

function use ( id ) {

    return require( id );

}