From 71f98a60ba0fa34592e11c1478f65881b86ed339 Mon Sep 17 00:00:00 2001
From: Andrew Lord <andrew.lord@getbusy.com>
Date: Sat, 22 Sep 2018 01:45:05 +0100
Subject: [PATCH] Recognize destructuring

---
 lib/rouge/lexers/kotlin.rb | 11 +++++++++++
 spec/visual/samples/kotlin |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/lib/rouge/lexers/kotlin.rb b/lib/rouge/lexers/kotlin.rb
index 4e6021cc14..ad32d8e639 100644
--- a/lib/rouge/lexers/kotlin.rb
+++ b/lib/rouge/lexers/kotlin.rb
@@ -61,6 +61,10 @@ class Kotlin < RegexLexer
           groups Keyword, Text
           push :package
         end
+        rule %r'\b(val|var)(\s+)(\()' do
+          groups Keyword::Declaration, Text, Punctuation
+          push :destructure
+        end
         rule %r'\b(val|var)(\s+)' do
           groups Keyword::Declaration, Text
           push :property
@@ -97,6 +101,13 @@ class Kotlin < RegexLexer
       state :property do
         rule id, Name::Property, :pop!
       end
+
+      state :destructure do
+        rule %r'(,)', Punctuation
+        rule %r'(\))', Punctuation, :pop!
+        rule %r'(\s+)', Text
+        rule id, Name::Property
+      end
     end
   end
 end
diff --git a/spec/visual/samples/kotlin b/spec/visual/samples/kotlin
index 8bce715e2f..6d161097de 100644
--- a/spec/visual/samples/kotlin
+++ b/spec/visual/samples/kotlin
@@ -152,4 +152,6 @@ fun <T, V> String.genericExtensionFunction() {
 fun anAnnotatedFunction() = {
 }
 
+val (a, b) = pair
+
 // comment at EOF (#797)