Merge pull request #814 from Golmote/prism-kotlin

Add support for Kotlin

components.js

@@ -266,6 +266,11 @@ var components = {
 			"title": "Keyman",
 			"owner": "mcdurdin"
 		},
+		"kotlin": {
+			"title": "Kotlin",
+			"require": "clike",
+			"owner": "Golmote"
+		},
 		"latex": {
 			"title": "LaTeX",
 			"owner": "japborst"

components/prism-kotlin.js

@@ -0,0 +1,68 @@
+(function (Prism) {
+	Prism.languages.kotlin = Prism.languages.extend('clike', {
+		'keyword': {
+			// The lookbehind prevents wrong highlighting of e.g. kotlin.properties.get
+			pattern: /(^|[^.])\b(?:abstract|annotation|as|break|by|catch|class|companion|const|constructor|continue|crossinline|data|do|else|enum|final|finally|for|fun|get|if|import|in|init|inline|inner|interface|internal|is|lateinit|noinline|null|object|open|out|override|package|private|protected|public|reified|return|sealed|set|super|tailrec|this|throw|to|try|val|var|when|where|while)\b/,
+			lookbehind: true
+		},
+		'function': [
+			/\w+(?=\s*\()/,
+			{
+				pattern: /(\.)\w+(?=\s*\{)/,
+				lookbehind: true
+			}
+		],
+		'number': /\b(?:0[bx][\da-fA-F]+|\d+(?:\.\d+)?(?:e[+-]?\d+)?[fFL]?)\b/,
+		'operator': /\+[+=]?|-[-=>]?|==?=?|!(?:!|==?)?|[\/*%<>]=?|[?:]:?|\.\.|&&|\|\||\b(?:and|inv|or|shl|shr|ushr|xor)\b/
+	});
+
+	delete Prism.languages.kotlin["class-name"];
+
+	Prism.languages.insertBefore('kotlin', 'string', {
+		'raw-string': {
+			pattern: /(["'])\1\1[\s\S]*?\1{3}/,
+			alias: 'string'
+			// See interpolation below
+		}
+	});
+	Prism.languages.insertBefore('kotlin', 'keyword', {
+		'annotation': {
+			pattern: /\B@(?:\w+:)?(?:[A-Z]\w*|\[[^\]]+\])/,
+			alias: 'builtin'
+		}
+	});
+	Prism.languages.insertBefore('kotlin', 'function', {
+		'label': {
+			pattern: /\w+@|@\w+/,
+			alias: 'symbol'
+		}
+	});
+
+	var interpolation = [
+		{
+			pattern: /\$\{[^}]+\}/,
+			inside: {
+				delimiter: {
+					pattern: /^\$\{|\}$/,
+					alias: 'variable'
+				},
+				rest: Prism.util.clone(Prism.languages.kotlin)
+			}
+		},
+		{
+			pattern: /\$\w+/,
+			alias: 'variable'
+		}
+	];
+
+	Prism.languages.kotlin['string'] = {
+		pattern: Prism.languages.kotlin['string'],
+		inside: {
+			interpolation: interpolation
+		}
+	};
+	Prism.languages.kotlin['raw-string'].inside = {
+		interpolation: interpolation
+	};
+
+}(Prism));

examples/prism-kotlin.html

@@ -0,0 +1,147 @@
+<h1>Kotlin</h1>
+<p>To use this language, use the class "language-kotlin".</p>
+
+<h2>Numbers</h2>
+<pre><code>123
+123L
+0x0F
+0b00001011
+123.5
+123.5e10
+123.5f
+123.5F</code></pre>
+
+<h2>Strings and interpolation</h2>
+<pre><code>'2'
+'\uFF00'
+'\''
+
+"foo $bar \"baz"
+"""
+foo ${40 + 2}
+baz${bar()}
+"""</code></pre>
+
+<h2>Labels</h2>
+<pre><code>loop@ for (i in 1..100) {
+  for (j in 1..100) {
+    if (...)
+      break@loop
+  }
+}</code></pre>
+
+<h2>Annotations</h2>
+<pre><code>public class MyTest {
+    lateinit var subject: TestSubject
+
+    @SetUp fun setup() {
+        subject = TestSubject()
+    }
+
+    @Test fun test() {
+        subject.method()  // dereference directly
+    }
+}</code></pre>
+
+<h2>Full example</h2>
+<pre><code>package com.example.html
+
+interface Element {
+    fun render(builder: StringBuilder, indent: String)
+
+    override fun toString(): String {
+        val builder = StringBuilder()
+        render(builder, "")
+        return builder.toString()
+    }
+}
+
+class TextElement(val text: String): Element {
+    override fun render(builder: StringBuilder, indent: String) {
+        builder.append("$indent$text\n")
+    }
+}
+
+abstract class Tag(val name: String): Element {
+    val children = arrayListOf&lt;Element>()
+    val attributes = hashMapOf&lt;String, String>()
+
+    protected fun initTag&lt;T: Element>(tag: T, init: T.() -> Unit): T {
+        tag.init()
+        children.add(tag)
+        return tag
+    }
+
+    override fun render(builder: StringBuilder, indent: String) {
+        builder.append("$indent&lt;$name${renderAttributes()}>\n")
+        for (c in children) {
+            c.render(builder, indent + "  ")
+        }
+        builder.append("$indent&lt;/$name>\n")
+    }
+
+    private fun renderAttributes(): String? {
+        val builder = StringBuilder()
+        for (a in attributes.keySet()) {
+            builder.append(" $a=\"${attributes[a]}\"")
+        }
+        return builder.toString()
+    }
+}
+
+abstract class TagWithText(name: String): Tag(name) {
+    operator fun String.plus() {
+        children.add(TextElement(this))
+    }
+}
+
+class HTML(): TagWithText("html") {
+    fun head(init: Head.() -> Unit) = initTag(Head(), init)
+
+    fun body(init: Body.() -> Unit) = initTag(Body(), init)
+}
+
+class Head(): TagWithText("head") {
+    fun title(init: Title.() -> Unit) = initTag(Title(), init)
+}
+
+class Title(): TagWithText("title")
+
+abstract class BodyTag(name: String): TagWithText(name) {
+    fun b(init: B.() -> Unit) = initTag(B(), init)
+    fun p(init: P.() -> Unit) = initTag(P(), init)
+    fun h1(init: H1.() -> Unit) = initTag(H1(), init)
+    fun a(href: String, init: A.() -> Unit) {
+        val a = initTag(A(), init)
+        a.href = href
+    }
+}
+
+class Body(): BodyTag("body")
+
+class B(): BodyTag("b")
+class P(): BodyTag("p")
+class H1(): BodyTag("h1")
+class A(): BodyTag("a") {
+    public var href: String
+        get() = attributes["href"]!!
+        set(value) {
+            attributes["href"] = value
+        }
+}
+
+fun html(init: HTML.() -> Unit): HTML {
+    val html = HTML()
+    html.init()
+    return html
+}</code></pre>
+
+<h2>Known failures</h2>
+<p>There are certain edge cases where Prism will fail.
+	There are always such cases in every regex-based syntax highlighter.
+	However, Prism dares to be open and honest about them.
+	If a failure is listed here, it doesn’t mean it will never be fixed. This is more of a “known bugs” list, just with a certain type of bug.
+</p>
+
+<h3>Comment-like substrings</h3>
+<pre><code>"foo /* bar */";</code></pre>

plugins/autoloader/prism-autoloader.js

@@ -4,7 +4,7 @@
 	}
 
 	// The dependencies map is built automatically with gulp
-	var lang_dependencies = /*languages_placeholder[*/{"javascript":"clike","actionscript":"javascript","aspnet":"markup","bison":"c","c":"clike","csharp":"clike","cpp":"c","coffeescript":"javascript","crystal":"ruby","css-extras":"css","d":"clike","dart":"clike","fsharp":"clike","glsl":"clike","go":"clike","groovy":"clike","haml":"ruby","handlebars":"markup","haxe":"clike","jade":"javascript","java":"clike","less":"css","markdown":"markup","nginx":"clike","objectivec":"c","parser":"markup","php":"clike","php-extras":"php","processing":"clike","qore":"clike","jsx":["markup","javascript"],"ruby":"clike","sass":"css","scss":"css","scala":"java","smarty":"markup","swift":"clike","textile":"markup","twig":"markup","typescript":"javascript","wiki":"markup"}/*]*/;
+	var lang_dependencies = /*languages_placeholder[*/{"javascript":"clike","actionscript":"javascript","aspnet":"markup","bison":"c","c":"clike","csharp":"clike","cpp":"c","coffeescript":"javascript","crystal":"ruby","css-extras":"css","d":"clike","dart":"clike","fsharp":"clike","glsl":"clike","go":"clike","groovy":"clike","haml":"ruby","handlebars":"markup","haxe":"clike","jade":"javascript","java":"clike","kotlin":"clike","less":"css","markdown":"markup","nginx":"clike","objectivec":"c","parser":"markup","php":"clike","php-extras":"php","processing":"clike","qore":"clike","jsx":["markup","javascript"],"ruby":"clike","sass":"css","scss":"css","scala":"java","smarty":"markup","swift":"clike","textile":"markup","twig":"markup","typescript":"javascript","wiki":"markup"}/*]*/;
 
 	var lang_data = {};
 

tests/languages/kotlin/annotation_feature.test

@@ -0,0 +1,21 @@
+@Deprecated(SUBSYSTEM_DEPRECATED)
+@SetUp
+@Suppress
+@field:Ann
+@file:JvmName
+@set:[Inject VisibleForTesting]
+
+----------------------------------------------------
+
+[
+	["annotation", "@Deprecated"], ["punctuation", "("], "SUBSYSTEM_DEPRECATED", ["punctuation", ")"],
+	["annotation", "@SetUp"],
+	["annotation", "@Suppress"],
+	["annotation", "@field:Ann"],
+	["annotation", "@file:JvmName"],
+	["annotation", "@set:[Inject VisibleForTesting]"]
+]
+
+----------------------------------------------------
+
+Checks for annotations.

tests/languages/kotlin/function_feature.test

@@ -0,0 +1,16 @@
+foo()
+foo_Bar_42()
+list.filter {}
+
+----------------------------------------------------
+
+[
+	["function", "foo"], ["punctuation", "("], ["punctuation", ")"],
+	["function", "foo_Bar_42"], ["punctuation", "("], ["punctuation", ")"],
+	"\r\nlist", ["punctuation", "."],
+	["function", "filter"], ["punctuation", "{"], ["punctuation", "}"]
+]
+
+----------------------------------------------------
+
+Checks for functions.

tests/languages/kotlin/interpolation_feature.test

@@ -0,0 +1,46 @@
+"$foo ${bar} ${'$'} ${foobar()}"
+"""
+$foo ${bar}
+${'$'} ${foobar()}
+"""
+
+----------------------------------------------------
+
+[
+	["string", [
+		"\"",
+		["interpolation", "$foo"],
+		["interpolation", [
+			["delimiter", "${"], "bar", ["delimiter", "}"]
+		]],
+		["interpolation", [
+			["delimiter", "${"], ["string", "'$'"], ["delimiter", "}"]
+		]],
+		["interpolation", [
+			["delimiter", "${"],
+			["function", "foobar"], ["punctuation", "("], ["punctuation", ")"],
+			["delimiter", "}"]
+		]],
+		"\""
+	]],
+	["raw-string", [
+		"\"\"\"\r\n",
+		["interpolation", "$foo"],
+		["interpolation", [
+			["delimiter", "${"], "bar", ["delimiter", "}"]
+		]],
+		["interpolation", [
+			["delimiter", "${"], ["string", "'$'"], ["delimiter", "}"]
+		]],
+		["interpolation", [
+			["delimiter", "${"],
+			["function", "foobar"], ["punctuation", "("], ["punctuation", ")"],
+			["delimiter", "}"]
+		]],
+		"\r\n\"\"\""
+	]]
+]
+
+----------------------------------------------------
+
+Checks for string interpolation.