Refactor implementation for String.prototype.replace.

test/mjsunit/string-replace.js

Index: test/mjsunit/string-replace.js
diff --git a/test/mjsunit/string-replace.js b/test/mjsunit/string-replace.js
index 6b022df307d8e76e8f4a4e40cbaf22efc5901e1a..502a7a4bd4a270369b933d7a6dcf7a71bc553586 100644
--- a/test/mjsunit/string-replace.js
+++ b/test/mjsunit/string-replace.js
@@ -212,3 +212,56 @@ var str = 'She sells seashells by the seashore.';
 var re = /sh/g;
 assertEquals('She sells sea$schells by the sea$schore.',
              str.replace(re,"$$" + 'sch'))
+
+
+var replace_obj = { length: 0, toString: function() { return "x"; }};
+assertEquals("axc", "abc".replace(/b/, replace_obj));
+
+var search_obj = { length: 1, toString: function() { return "b"; }};
+assertEquals("axc", "abc".replace(search_obj, function() { return "x"; }));
+
+var regexp99pattern = "";
+var subject = "";
+for (var i = 0; i < 99; i++) {
+  regexp99pattern += "(.)";
+  subject += String.fromCharCode(i + 24);
+}
+
+function testIndices99(re) {
+  // Test $1 .. $99
+  for (var i = 1; i < 100; i++) {
+    assertEquals(String.fromCharCode(i + 23),
+                 subject.replace(re, "$" + i));
+  }
+
+  // Test $01 .. $09
+  for (var i = 1; i < 10; i++) {
+    assertEquals(String.fromCharCode(i + 23),
+                 subject.replace(re, "$0" + i));
+  }
+
+  assertEquals("$0", subject.replace(re, "$0"));
+  assertEquals("$00", subject.replace(re, "$00"));
+  assertEquals(String.fromCharCode(10 + 23) + "0",
+               subject.replace(re, "$100"));
+}
+
+testIndices99(new RegExp(regexp99pattern));
+testIndices99(new RegExp(regexp99pattern, "g"));
+
+var regexp59pattern = "";
+for (var i = 0; i < 59; i++) regexp59pattern += "(.)";
+
+function testIndices59(re) {
+  // Test $60 .. $99.  Captures reach up to 59.  Per spec, how to deal
+  // with this is implementation-dependent. We interpret $60 as $6
+  // followed by "0", $61 as $6, followed by "1" and so on.
+  var tail = subject.substr(59);
+  for (var i = 60; i < 100; i++) {
+    assertEquals(String.fromCharCode(i / 10 + 23) + (i % 10) + tail,
+                 subject.replace(re, "$" + i));
+  }
+}
+
+testIndices59(new RegExp(regexp59pattern));
+testIndices59(new RegExp(regexp59pattern, "g"));