Kotlin support

src/lang-kotlin.js

@@ -0,0 +1,58 @@
+/**
+ * @license
+ * Copyright (C) 2017 Michał Bączkowski
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @fileoverview
+ * Registers a language handler for Kotlin.
+ *
+ * Limitations:
+ * - doesn't support string interpolation ("$var")
+ * - doesn't support labels if there is no space between the keyword (break@loop, loop@for)
+ *
+ * @author [email protected]
+ */
+
+PR['registerLangHandler'](
+    PR['createSimpleLexer'](
+        [
+            [PR['PR_PLAIN'], /^[\t\n\r \xA0]+/, null, '\t\n\r \xA0'],
+            [PR['PR_PUNCTUATION'], /^[.!%&()*+,\-;<=>?\[\\\]^{|}:]+/, null, '.!%&()*+,-;<=>?[\\]^{|}:']
+        ],
+        [
+            // keywords
+            [PR['PR_KEYWORD'],
+                /^\b(package|public|protected|private|open|abstract|constructor|final|override|import|for|while|as|typealias|get|set|((data|enum|annotation|sealed) )?class|this|super|val|var|fun|is|in|throw|return|break|continue|(companion )?object|if|try|else|do|when|init|interface|typeof)\b/],
+            [PR['PR_LITERAL'], /^(?:true|false|null)\b/],
+            // number literals
+            [PR['PR_LITERAL'], /^(0[xX][0-9a-fA-F_]+L?|0[bB][0-1]+L?|[0-9_.]+([eE]-?[0-9]+)?[fFL]?)/],
+            [PR['PR_TYPE'], /^(\b[A-Z]+[a-z][a-zA-Z0-9_$@]*|`.*`)/, null],
+            //double slash comments
+            [PR['PR_COMMENT'], /^\/\/.*/],
+            //slash star comments and documentation
+            [PR['PR_COMMENT'], /^\/\*[\s\S]*?(?:\*\/|$)/],
+            // char
+            [PR['PR_STRING'], /'.'/],
+            // string
+            [PR['PR_STRING'], /^"([^"\\]|\\[\s\S])*"/],
+            // multiline string
+            [PR['PR_STRING'], /^"{3}[\s\S]*?[^\\]"{3}/],
+            // annotation (and label)
+            [PR['PR_LITERAL'], /^@([a-zA-Z0-9_$@]*|`.*`)/],
+            // label definition
+            [PR['PR_LITERAL'], /^[a-zA-Z0-9_]+@/]
+        ]),
+    ['kotlin']);

tests/prettify_test_2.html

@@ -26,6 +26,7 @@
     'lang-css.js',
     'lang-dart.js',
     'lang-ex.js',
+    'lang-kotlin.js',
     'lang-lisp.js',
     'lang-llvm.js',
     'lang-matlab.js',
@@ -1140,5 +1141,65 @@ <h1>Elixir</h1>
 end
 </pre>
 
+<h1>Kotlin</h1>
+<pre class="prettyprint lang-kotlin" id="kotlin">
+package test;
+
+import kotlin.Int
+
+// Single line comment
+/*
+ * Multiline
+ * comment
+ */
+
+typealias SomeNumber = Int
+
+val number: Long = 1_000L
+var float: Float = 12.34f
+0xFF_FF
+3.14
+
+314e-2
+0.314e1
+
+protected override fun ifBoolean(condition: Boolean? = null) {}
+
+::ifBoolean
+
+constructor() : super()
+
+"\"true\""
+'a'
+
+"""
+aaaaaaaaaaa
+"""
+
+loop@ for()
+
+break @loop
+
+enum class `true`
+
+data class Person(val name: String)
+
+enum class Size {
+    BIG, MEDIUM, SMALL
+}
+
+class Ball(val color: String, val size: Size) {
+    companion object {}
+
+    fun isBig() = size == Size.BIG
+
+    val isMedium: Boolean
+        get() = size == Size.MEDIUM
+}
+
+fun Boolean?.isNull(): Boolean = this == null
+
+fun Boolean?.getOrThrow(): Boolean = this ?: throw Exception()
+</pre>
 </body>
 </html>

tests/prettify_test_2.js

@@ -708,6 +708,66 @@ var goldens = {
     '  `END`KWDEND`END`PUN;`END`PLN\n' +
     '`END`KWDEND`END`PUN;`END'
   ),
+  kotlin: (
+      '`KWDpackage`END`PLN test`END`PUN;`END`PLN\n' +
+      '\n' +
+      '`END`KWDimport`END`PLN kotlin`END`PUN.`END`TYPInt`END`PLN\n' +
+      '\n' +
+      '`END`COM// Single line comment`END`PLN\n' +
+      '`END`COM/*\n' +
+      ' * Multiline\n' +
+      ' * comment\n' +
+      ' */`END`PLN\n' +
+      '\n' +
+      '`END`KWDtypealias`END`PLN `END`TYPSomeNumber`END`PLN `END`PUN=`END`PLN `END`TYPInt`END`PLN\n' +
+      '\n' +
+      '`END`KWDval`END`PLN number`END`PUN:`END`PLN `END`TYPLong`END`PLN `END`PUN=`END`PLN `END`LIT1_000L`END`PLN\n' +
+      '`END`KWDvar`END`PLN float`END`PUN:`END`PLN `END`TYPFloat`END`PLN `END`PUN=`END`PLN `END`LIT12.34f`END`PLN\n' +
+      '`END`LIT0xFF_FF`END`PLN\n' +
+      '`END`LIT3.14`END`PLN\n' +
+      '\n' +
+      '`END`LIT314e-2`END`PLN\n' +
+      '`END`LIT0.314e1`END`PLN\n' +
+      '\n' +
+      '`END`KWDprotected`END`PLN `END`KWDoverride`END`PLN `END`KWDfun`END`PLN ifBoolean`END`PUN(`END`PLNcondition`END`PUN:`END`PLN `END`TYPBoolean`END`PUN?`END`PLN `END`PUN=`END`PLN `END`LITnull`END`PUN)`END' +
+      '`PLN `END`PUN{}`END`PLN\n' +
+      '\n' +
+      '`END`PUN::`END`PLNifBoolean\n' +
+      '\n' +
+      '`END`KWDconstructor`END`PUN()`END`PLN `END`PUN:`END`PLN `END`KWDsuper`END`PUN()`END`PLN\n' +
+      '\n' +
+      '`END`STR"\\\"true\\\""`END`PLN\n' +
+      '`END`STR\'a\'`END`PLN\n' +
+      '\n' +
+      '`END`STR"""\n' +
+      'aaaaaaaaaaa\n' +
+      '"""`END`PLN\n' +
+      '\n' +
+      '`END`LITloop@`END`PLN `END`KWDfor`END`PUN()`END`PLN\n' +
+      '\n' +
+      '`END`KWDbreak`END`PLN `END`LIT@loop`END`PLN\n' +
+      '\n' +
+      '`END`KWDenum class`END`PLN `END`TYP\`true\``END`PLN\n' +
+      '\n' +
+      '`END`KWDdata class`END`PLN `END`TYPPerson`END`PUN(`END`KWDval`END`PLN name`END`PUN:`END`PLN `END`TYPString`END`PUN)`END`PLN\n' +
+      '\n' +
+      '`END`KWDenum class`END`PLN `END`TYPSize`END`PLN `END`PUN{`END`PLN\n' +
+      '    BIG`END`PUN,`END`PLN MEDIUM`END`PUN,`END`PLN SMALL\n' +
+      '`END`PUN}`END`PLN\n' +
+      '\n' +
+      '`END`KWDclass`END`PLN `END`TYPBall`END`PUN(`END`KWDval`END`PLN color`END`PUN:`END`PLN `END`TYPString`END`PUN,`END`PLN `END`KWDval`END`PLN size`END`PUN:`END`PLN `END`TYPSize`END`PUN)`END`PLN `END`PUN{`END`PLN\n' +
+      '    `END`KWDcompanion object`END`PLN `END`PUN{}`END`PLN\n' +
+      '\n' +
+      '    `END`KWDfun`END`PLN isBig`END`PUN()`END`PLN `END`PUN=`END`PLN size `END`PUN==`END`PLN `END`TYPSize`END`PUN.`END`PLNBIG\n' +
+      '\n' +
+      '    `END`KWDval`END`PLN isMedium`END`PUN:`END`PLN `END`TYPBoolean`END`PLN\n' +
+      '        `END`KWDget`END`PUN()`END`PLN `END`PUN=`END`PLN size `END`PUN==`END`PLN `END`TYPSize`END`PUN.`END`PLNMEDIUM\n' +
+      '`END`PUN}`END`PLN\n' +
+      '\n' +
+      '`END`KWDfun`END`PLN `END`TYPBoolean`END`PUN?.`END`PLNisNull`END`PUN():`END`PLN `END`TYPBoolean`END`PLN `END`PUN=`END`PLN `END`KWDthis`END`PLN `END`PUN==`END`PLN `END`LITnull`END`PLN\n' +
+      '\n' +
+      '`END`KWDfun`END`PLN `END`TYPBoolean`END`PUN?.`END`PLNgetOrThrow`END`PUN():`END`PLN `END`TYPBoolean`END`PLN `END`PUN=`END`PLN `END`KWDthis`END`PLN `END`PUN?:`END`PLN `END`KWDthrow`END`PLN `END`TYPException`END`PUN()`END'
+  ),
   llvm: (
     '`COM; Declare the string constant as a global constant.`END`PLN\n' +
     '@.str `END`PUN=`END`PLN `END`KWDprivate`END`PLN `END`KWDunnamed_addr`END`PLN `END`KWDconstant`END`PLN `END`PUN[`END`LIT13`END`PLN `END`KWDx`END`PLN `END`KWDi8`END`PUN]`END`PLN `END`KWDc`END`STR"hello world\\0A\\00"`END`PLN\n' +