# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1383228095 -3600
# Node ID e896bc6879840ec7a53531f7b7a22b0310ad8d25
# Parent  9aeb2a41e009bc86bb3445a929e91c8641c1c781
Implementing String's intern()

diff -r 9aeb2a41e009 -r e896bc687984 rt/emul/compact/src/test/java/org/apidesign/bck2brwsr/tck/CompareStringsTest.java
--- a/rt/emul/compact/src/test/java/org/apidesign/bck2brwsr/tck/CompareStringsTest.java	Thu Oct 31 11:36:52 2013 +0100
+++ b/rt/emul/compact/src/test/java/org/apidesign/bck2brwsr/tck/CompareStringsTest.java	Thu Oct 31 15:01:35 2013 +0100
@@ -49,6 +49,14 @@
         return "Ahoj".equals(null);
     }
     
+    @Compare public boolean internIsSame() {
+        return new String("Ahoj").intern() == another();
+    }
+    
+    private static String another() {
+        return new String("Ahoj").intern();
+    }
+    
     @Compare public int highByteLenght() {
         byte[] arr= { 77,97,110,105,102,101,115,116,45,86,101,114,115,105,111,110 };
         return new String(arr, 0).length();
diff -r 9aeb2a41e009 -r e896bc687984 rt/emul/mini/src/main/java/java/lang/String.java
--- a/rt/emul/mini/src/main/java/java/lang/String.java	Thu Oct 31 11:36:52 2013 +0100
+++ b/rt/emul/mini/src/main/java/java/lang/String.java	Thu Oct 31 15:01:35 2013 +0100
@@ -3109,6 +3109,14 @@
      * @return  a string that has the same contents as this string, but is
      *          guaranteed to be from a pool of unique strings.
      */
+    @JavaScriptBody(args = {}, body = 
+        "var s = this.toString().toString();\n" +
+        "var i = String.intern || (String.intern = {})\n" + 
+        "if (!i[s]) {\n" +
+        "  i[s] = s;\n" +
+        "}\n" +
+        "return i[s];"
+    )
     public native String intern();