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README
Apache-2.0

NG

理念

该代码生成系统分为三部分,模型、模板和连接器,用户可自由定义自己的模型,规则,并按照这个规则,由自己定义代码模板,我认为一个由用户自己定义的代码生成模板才是最好的模板,通过连接器将模型和模板进行连接,并指定生成文件的路径。

模板

语法

类似于razor语法,参考了vash,针对于代码生成,会比较在意代码缩进换行的格式,因此自定义了一套模板的语法,用了jade中用到的词法分析器

  1. 输出型代码,使用@(<code>) 例:@(model.name)
  2. 逻辑代码块,使用@{<code>} 例:
    @{
        let pName = ng.toPascalCase(name);
    }
  3. 行内文本,使用@:<text>\n,输出的文本不会在末位加上换行符
  4. 文本块,使用@:{<text>@:}
  5. 转义,使用@@,代表@
  6. 截断符, @!,如需要以单行文本形式输出{xxx},会使用@:{xxx},但@:{与逻辑代码块的标识冲突了,可以加入截断符@:@!{xxx}来输出{xxx} 更多的例子

for循环的模板:

@{
    if(model && model.arr && model.arr.length){
        for(let i in model.arr){
            let item = model.arr[i];
            let split = i == 0 ? '' : (model.split || '');
@(split)@(ng.include(model.template, item))
        }
    }
}

布局

暂时没有加入母版的概念,因为还不需要

子模板

子模板使用ng.include(<子模板filePath>, <model>)

占位符

占位符会延迟输出,等到整个template生成完以后才会将内容替换。

  1. 使用@[<placeHolderName>]来放置占位符
  2. 使用@[<placeHolderName>(,<tag>)]{<code>}来定义占位符中的内容
占位符中tag的作用

一般定义占位符内容时,如果没有指定tag,默认就会将内容添加到占位符中 例如存在@[p] 在模板的两个位置定义了这个占位符的内容

@[p]{
@:paragraph1
}
@[p]{
@:paragraph2
}

那么最终在@[p]的位置,输出的文本会是paragraph1paragraph2 如果加入了tag,相同tag的只会添加一次

@[p,tag1]{
@:paragraph1
}
@[p,tag1]{
@:paragraph2
}
@[p,tag2]{
@:paragraph3
}

那么最终在@[p]的位置,输出的文本会是paragraph1paragraph3,第二段定义会被忽略

换行缩进

可以在ng.include@[<placeHolderName>]中加入空格进行换行缩进的模式切换,具体如下:

ng.include

例子:

<Form.Item label="@(model.display)" {...formItemLayout}>
    {getFieldDecorator('@(model.name)', {
        rules: [@(ng.include(' for', {arr: model.rules, template: 'frontend/create/rule', split: ',\n'}))]
    })(
        <Input @(model.isPassword ? ' type="password"' : '')
            placeholder="@(model.display)"
        />
    )}
</Form.Item>

其中ng.include(' for'代码中在"子模板filePath"前面加入了空格,那么输出时会是这种效果:

<Form.Item label="Name1" {...formItemLayout}>
    {getFieldDecorator('ccc', {
        rules: [{required: true, message: 'Must required'},
        {validator: this.emailValidate, message: 'Must be email format'}]
    })(
        <Input 
            placeholder="Name1"
        />
    )}
</Form.Item>

如果去掉空格:

<Form.Item label="@(model.display)" {...formItemLayout}>
    {getFieldDecorator('@(model.name)', {
        rules: [@(ng.include('for', {arr: model.rules, template: 'frontend/create/rule', split: ',\n'}))]
    })(
        <Input @(model.isPassword ? ' type="password"' : '')
            placeholder="@(model.display)"
        />
    )}
</Form.Item>

结果会是

<Form.Item label="Name1" {...formItemLayout}>
    {getFieldDecorator('ccc', {
        rules: [{required: true, message: 'Must required'},
                {validator: this.emailValidate, message: 'Must be email format'}]
    })(
        <Input 
            placeholder="Name1"
        />
    )}
</Form.Item>

也就是如果前面加了空格,那换行时的缩进就只会对齐到该行的空格部分; 如果不加空格,换行时缩进就会对齐到文字部分

@[<placeHolderName>]

占位符也遵循同样的规则 例子: 占位符:

import {
    Form@[ antd]
} from 'antd';

占位符的内容定义:

@[antd,input]{@:{,
Input@:}}

带空格时,输出:

import {
    Form,
    Input
} from 'antd';

如果去掉空格

import {
    Form@[antd]
} from 'antd';

结果会是

import {
    Form,
        Input
} from 'antd';

模型

可自由定义js模型,各种规则可自由约定。

内置属性

模型本身

名字 类型 说明
_path 字符串 文件路径
_fileName 字符串 文件名,不带扩展名
_fullFileName 字符串 文件名,带扩展名
_dirPaths 字符串数组 文件夹路径数组,相对于模型根目录
_props.name 字符串 类名

模型成员

对于对象类型的成员 _ref: 若定义了ref: '<filePath>'(这里的<filePath>是相对于配置中的模型文件夹的相对路径),_ref则会指向相应的模型

class OrderDetail{
    ccc = {
        display: 'Name1',
        ref: 'order-manage/test.js',
        rules:[{type: 'required', message: 'Must required'},{type: 'email', message: 'Must be email format'}]
    }
}

module.exports = OrderDetail;

配置文件(包含连接器)

名字 类型 说明
root 字符串 根目录,若为空,则会使用process.cwd()作为根目录
outputDir 字符串 输出目录
deleteOutput 布尔值 生成代码时是否清空输出目录
modelsDir 字符串 模型目录,系统会遍历整个模型目录中的模型文件,包括子目录
templateDir 字符串 模板目录
helper 对象 用户可自定义函数, 在模板中可使用ng.自定义函数来调用这里自定义的function
customModelProp 函数 输入参数为模型对象,用户可在该function中,对系统生成的模型进行修改,可修改添加属性,当然,使用delete,也可删除属性
customFieldProp 函数 输入参数为模型对象的成员,用户可在该function中,对系统生成的模型中的对象类型的成员进行修改,可修改添加属性
global 对象 全局变量,用户可在模板中直接调用这里定义的全局变量,如global.appName
mapping 函数 "连接器",输入参数为模型对象,用户需要返回对象数组,来指定模型,和输出的路径

连接器返回的模型对象

名字 类型 说明
scope 字符串 ng的范围
seq 数字 生成的顺序,数字越小,越先生成
model 对象 模型对象
template 字符串 模板路径,相对于配置中模板目录的相对路径
output 字符串 输出路径,相对于配置中输出目录的相对路径
noRender 布尔值 如果该字段为true, 则不会使用模板引擎进行渲染,会直接将文件拷贝到目标位置

scope支持以.分隔开的树形模式,例如root能包含root.module1, root.module1.module1_1,如果你在scoperoot.module1中的模板中有定义@[p]{<code>},那么在scoperoot所定义的模板中就能使用到@[p]的内容

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简介

通过用户自定义模型,模版,规则来自动生成各类项目代码 展开 收起
JavaScript
Apache-2.0
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