From 3a9e41f2d7394f2233eced0c9ca0d77af4324e62 Mon Sep 17 00:00:00 2001
From: Ilya Ryzhenkov <orangy@jetbrains.com>
Date: Tue, 13 Jan 2015 19:58:24 +0300
Subject: [PATCH] stdlib: Pair and Triple .toList()

---
 libraries/stdlib/src/kotlin/util/Tuples.kt | 10 ++++++++++
 libraries/stdlib/test/TuplesTest.kt        | 12 ++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/libraries/stdlib/src/kotlin/util/Tuples.kt b/libraries/stdlib/src/kotlin/util/Tuples.kt
index 07a34536d82..480cb47a12b 100644
--- a/libraries/stdlib/src/kotlin/util/Tuples.kt
+++ b/libraries/stdlib/src/kotlin/util/Tuples.kt
@@ -26,6 +26,11 @@ public data class Pair<out A, out B>(
     public override fun toString(): String = "($first, $second)"
 }
 
+/**
+ * Converts pair into a list
+ */
+public fun <T> Pair<T, T>.toList(): List<T> = listOf(first, second)
+
 /**
  * Represents a triad of values
  *
@@ -49,3 +54,8 @@ public data class Triple<out A, out B, out C>(
      */
     public override fun toString(): String = "($first, $second, $third)"
 }
+
+/**
+ * Converts triple into a list
+ */
+public fun <T> Triple<T, T, T>.toList(): List<T> = listOf(first, second, third)
diff --git a/libraries/stdlib/test/TuplesTest.kt b/libraries/stdlib/test/TuplesTest.kt
index 60868864909..b61c3e1b931 100644
--- a/libraries/stdlib/test/TuplesTest.kt
+++ b/libraries/stdlib/test/TuplesTest.kt
@@ -44,6 +44,12 @@ class PairTest {
         assertEquals(2, s.size())
         assertTrue(s.contains(p))
     }
+
+    test fun pairToList() {
+        assertEquals(listOf(1, 2), (1 to 2).toList())
+        assertEquals(listOf(1, null), (1 to null).toList())
+        assertEquals(listOf(1, "2"), (1 to "2").toList())
+    }
 }
 
 class TripleTest {
@@ -89,4 +95,10 @@ class TripleTest {
         assertEquals(2, s.size())
         assertTrue(s.contains(t))
     }
+
+    test fun tripleToList() {
+        assertEquals(listOf(1, 2, 3), (Triple(1, 2, 3)).toList())
+        assertEquals(listOf(1, null, 3), (Triple(1, null, 3)).toList())
+        assertEquals(listOf(1, 2, "3"), (Triple(1, 2, "3")).toList())
+    }
 }