From 67229401c6bb3a10ebb223bfbbb32507bd7af203 Mon Sep 17 00:00:00 2001
From: Daniel Rothmaler <daniel.rothmaler@nubix.biz>
Date: Wed, 14 Oct 2015 14:59:56 +0300
Subject: [PATCH] Add set operator to make the work with StringBuilder more
 list-like. Make StringBuilder.set jvm-only. Move jvm-specific test.

---
 libraries/stdlib/src/kotlin/text/StringBuilder.kt |  6 ++++++
 .../stdlib/test/text/StringBuilderJVMTest.kt      | 15 +++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 libraries/stdlib/test/text/StringBuilderJVMTest.kt

diff --git a/libraries/stdlib/src/kotlin/text/StringBuilder.kt b/libraries/stdlib/src/kotlin/text/StringBuilder.kt
index 5c7f925821e..7831d6c31fc 100644
--- a/libraries/stdlib/src/kotlin/text/StringBuilder.kt
+++ b/libraries/stdlib/src/kotlin/text/StringBuilder.kt
@@ -40,3 +40,9 @@ public fun StringBuilder.append(vararg value: Any?): StringBuilder {
         append(item)
     return this
 }
+
+/**
+ * Sets the character at the specified [index] to the specified [value].
+ */
+@kotlin.jvm.JvmVersion
+public operator fun StringBuilder.set(index: Int, value: Char): Unit = this.setCharAt(index, value)
diff --git a/libraries/stdlib/test/text/StringBuilderJVMTest.kt b/libraries/stdlib/test/text/StringBuilderJVMTest.kt
new file mode 100644
index 00000000000..4bd41acab5a
--- /dev/null
+++ b/libraries/stdlib/test/text/StringBuilderJVMTest.kt
@@ -0,0 +1,15 @@
+package test.text
+
+import kotlin.*
+import kotlin.test.*
+import org.junit.Test as test
+
+class StringBuilderJVMTest() {
+    @test fun getAndSetChar() {
+        val sb = StringBuilder("abc")
+        sb[1] = 'z'
+
+        assertEquals("azc", sb.toString())
+        assertEquals('c', sb[2])
+    }
+}