vscode - 代码模板
程序编写时,一段代码或说明会重复出现,使用模板有利于提高我们的工作效率。
VSCode 作为一种轻量级的代码编辑器,业界内颇受欢迎;下面就介绍一下如何利用VSCode snippet 制作代码模板。
创建一个snippets
- 菜单栏选择File
- 下拉菜单中选择 Preferences
- 再选择User snippets,出现下图情况,选择对应的语言即可;如果没有你需要的语言,你需要安装对应的语言插件。
Snippets内容使用JSON格式进行定义。
一个JavaScript例子
{
"For_Loop": {
"prefix": "for",
"body": [
"for (const ${2:element} of ${1:array}) {",
"\t$0",
"}"
],
"description": "For Loop"
}
}
- For_Loop: 当前snippet名字。
- prefix: 前缀,代码块使用快捷方式;键入前缀,按tab键,代码块就会被使用。
- body: 代码块内容;换行使用\r\n。
- description: 键入前缀,vscode 感知到前缀,显示的说明内容。
- $1,$2,$0: 指定代码模块生成后,编辑光标出现位置; 使用Tab键进行切换(编辑光标按$1,$2,$3...$0的顺序跳转),$0是光标最后可切换位置。
Snippet语法
Tabstops
$1
,$2
指定代码块生成后,光标出现的位置;不同位置的相同$1位置同时出现光标。
Placeholders
给光标出现位置加上默认值;例如,${1:another ${2:placeholder}}
;$1
处位置默认值是another
。
Choice
光标位置设置多个值可供选择; 例如,${1|one,two,three|}
;$1
位置处可以选择one
,two
,three
中一个词填充在此处。
Variables
常用变量
TM_SELECTED_TEXT
当前选中内容或空字符串TM_CURRENT_LINE
当前行内容TM_CURRENT_WORD
光标处字符或空字符串TM_LINE_INDEX
从0开始的行号TM_LINE_NUMBER
从1开始的行号TM_FILENAME
当前被编辑文档名TM_FILENAME_BASE
当前被编辑文档名,没有后缀TM_DIRECTORY
当前被编辑文档目录TM_FILEPATH
当前被编辑文档全路径CLIPBOARD
当前剪切板内容
日期和时间相关变量
CURRENT_YEAR
当前年CURRENT_YEAR_SHORT
当前年后两位CURRENT_MONTH
月份,两位数字表示,例如02CURRENT_MONTH_NAME
月份全称,例如 'July'CURRENT_MONTH_NAME_SHORT
月份简写 ,例如'JulCURRENT_DATE
某天CURRENT_DAY_NAME
星期几, 例如'Monday')CURRENT_DAY_NAME_SHORT
星期几的简写, 'Mon'CURRENT_HOUR
小时,24小时制CURRENT_MINUTE
分钟CURRENT_SECOND
秒数
变量格式化
${TM_FILENAME/(.*)\\..+$/$1/}
| | | |
| | | |-> no options
| | |
| | |-> references the contents of the first
| | capture group
| |
| |-> regex to capture everything before
| the final `.suffix`
|
|-> resolves to the filename
一个python snippet
"python template": {
"prefix": "pyHeader",
"body": [
"#!user/bin/python"
"# _*_ coding: utf-8 _*_"
" "
"# @File : $TM_FILENAME"
"# @Version : 1.0"
"# @Author : xxxxxxx"
"# @Email : xxxxxxx"
"# @Time : $CURRENT_YEAR/$CURRENT_MONTH/$CURRENT_DATE $CURRENT_HOUR:$CURRENT_MINUTE:$CURRENT_SECOND"
"#Description:"
" "
"import datetime"
"start_time = datetime.datetime.now()"
"end_time = datetime.datetime.now()"
"print(end_time-start_time)"
],
"description": "my vue python template",
}
config
// javascript.json
{
// Place your snippets for javascript here. Each snippet is defined under a snippet name and has a prefix, body and
// description. The prefix is what is used to trigger the snippet and the body will be expanded and inserted. Possible variables are:
// $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders. Placeholders with the
// same ids are connected.
// Example:
"Print to console": {
"prefix": "log|console",
"body": [
"console.log('$1')",
"$2"
],
"description": "Log output to console"
},
"For_Loop": {
"prefix": "for",
"body": [
"for (const ${2:element} of ${1:array}) {",
"\t$0",
"}"
],
"description": "For Loop"
},
"console.log": {
"prefix": "cl",
"body": [
"console.log($1)"
],
"description": "console.log"
},
"notes": {
"prefix": "/*",
"body": [
"/**",
" * @method $1",
" * @description $2",
" * @param $2",
" * @return $2",
" */",
],
"description": "notes 方法注释"
},
"todo": {
"prefix": "todo|TODO",
"body": [
"// !!!TODO $1"
],
"description": "TODO: // !!!TODO $1"
},
}