Expressive Code 代码块示例

在这里，我们将探索使用 Expressive Code 的代码块效果。提供的示例基于官方文档，你可以参考官方文档了解更多详情。

Expressive Code#

语法高亮#

常规语法高亮#

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console.log('This code is syntax highlighted!')

渲染 ANSI 转义序列#

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ANSI colors:
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- Regular: [31mRed[0m [32mGreen[0m [33mYellow[0m [34mBlue[0m [35mMagenta[0m [36mCyan[0m
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- Bold:    [1;31mRed[0m [1;32mGreen[0m [1;33mYellow[0m [1;34mBlue[0m [1;35mMagenta[0m [1;36mCyan[0m
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- Dimmed:  [2;31mRed[0m [2;32mGreen[0m [2;33mYellow[0m [2;34mBlue[0m [2;35mMagenta[0m [2;36mCyan[0m
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256 colors (showing colors 160-177):
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[38;5;160m160 [38;5;161m161 [38;5;162m162 [38;5;163m163 [38;5;164m164 [38;5;165m165[0m
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[38;5;166m166 [38;5;167m167 [38;5;168m168 [38;5;169m169 [38;5;170m170 [38;5;171m171[0m
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[38;5;172m172 [38;5;173m173 [38;5;174m174 [38;5;175m175 [38;5;176m176 [38;5;177m177[0m
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Full RGB colors:
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[38;2;34;139;34mForestGreen - RGB(34, 139, 34)[0m
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Text formatting: [1mBold[0m [2mDimmed[0m [3mItalic[0m [4mUnderline[0m

编辑器和终端框架#

编辑器和终端框架

代码编辑器框架#

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console.log('Title attribute example')

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<div>File name comment example</div>

终端框架#

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echo "This terminal frame has no title"

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Write-Output "This one has a title!"

覆盖框架类型#

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echo "Look ma, no frame!"

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# Without overriding, this would be a terminal frame
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function Watch-Tail { Get-Content -Tail 20 -Wait $args }
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New-Alias tail Watch-Tail

文本和行标记#

文本和行标记

标记整行和行范围#

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// Line 1 - targeted by line number
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// Line 2
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// Line 3
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// Line 4 - targeted by line number
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// Line 5
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// Line 6
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// Line 7 - targeted by range "7-8"
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// Line 8 - targeted by range "7-8"

选择行标记类型 (mark, ins, del)#

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function demo() {
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  console.log('this line is marked as deleted')
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  // This line and the next one are marked as inserted
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  console.log('this is the second inserted line')
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  return 'this line uses the neutral default marker type'
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}

为行标记添加标签#

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<button
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  role="button"
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  {...props}
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  value={value}
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  className={buttonClassName}
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  disabled={disabled}
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  active={active}
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>
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  {children &&
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    !active &&
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    (typeof children === 'string' ? <span>{children}</span> : children)}
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</button>

在单独行上添加长标签#

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<button
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  role="button"
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  {...props}
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  value={value}
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  className={buttonClassName}
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  disabled={disabled}
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  active={active}
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>
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  {children &&
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    !active &&
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    (typeof children === 'string' ? <span>{children}</span> : children)}
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</button>

使用 diff 风格语法#

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this line will be marked as inserted
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this line will be marked as deleted
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this is a regular line

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--- a/README.md
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+++ b/README.md
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@@ -1,3 +1,4 @@
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+this is an actual diff file
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-all contents will remain unmodified
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 no whitespace will be removed either

将语法高亮与 diff 风格语法结合#

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function thisIsJavaScript() {
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  // This entire block gets highlighted as JavaScript,
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  // and we can still add diff markers to it!
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  console.log('Old code to be removed')
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  console.log('New and shiny code!')
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}

标记行内的单个文本#

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function demo() {
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  // Mark any given text inside lines
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  return 'Multiple matches of the given text are supported';
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}

正则表达式#

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console.log('The words yes and yep will be marked.')

转义斜杠#

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echo "Test" > /home/test.txt

选择内联标记类型 (mark, ins, del)#

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function demo() {
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  console.log('These are inserted and deleted marker types');
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  // The return statement uses the default marker type
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  return true;
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}

自动换行#

自动换行

按块配置自动换行#

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// Example with wrap
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function getLongString() {
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  return 'This is a very long string that will most probably not fit into the available space unless the container is extremely wide'
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}

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// Example with wrap=false
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function getLongString() {
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  return 'This is a very long string that will most probably not fit into the available space unless the container is extremely wide'
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}

配置换行行的缩进#

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// Example with preserveIndent (enabled by default)
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function getLongString() {
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  return 'This is a very long string that will most probably not fit into the available space unless the container is extremely wide'
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}

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// Example with preserveIndent=false
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function getLongString() {
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  return 'This is a very long string that will most probably not fit into the available space unless the container is extremely wide'
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}

可折叠部分#

可折叠部分


5 collapsed lines
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// All this boilerplate setup code will be collapsed
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import { someBoilerplateEngine } from '@example/some-boilerplate'
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import { evenMoreBoilerplate } from '@example/even-more-boilerplate'
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const engine = someBoilerplateEngine(evenMoreBoilerplate())
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// This part of the code will be visible by default
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engine.doSomething(1, 2, 3, calcFn)
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function calcFn() {
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  // You can have multiple collapsed sections
3 collapsed lines
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  const a = 1
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  const b = 2
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  const c = a + b
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  // This will remain visible
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  console.log(`Calculation result: ${a} + ${b} = ${c}`)
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  return c
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}
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4 collapsed lines
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// All this code until the end of the block will be collapsed again
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engine.closeConnection()
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engine.freeMemory()
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engine.shutdown({ reason: 'End of example boilerplate code' })

行号#

行号

按块显示行号#

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// This code block will show line numbers
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console.log('Greetings from line 2!')
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console.log('I am on line 3')

// Line numbers are disabled for this block
console.log('Hello?')
console.log('Sorry, do you know what line I am on?')

更改起始行号#

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console.log('Greetings from line 5!')
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console.log('I am on line 6')