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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ *
+ * Date:    15 July 2002
+ * SUMMARY: Testing functions with double-byte names
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=58274
+ *
+ * Here is a sample of the problem:
+ *
+ *    js> function f\u02B1 () {}
+ *
+ *    js> f\u02B1.toSource();
+ *    function f¦() {}
+ *
+ *    js> f\u02B1.toSource().toSource();
+ *    (new String("function f\xB1() {}"))
+ *
+ *
+ * See how the high-byte information (the 02) has been lost?
+ * The same thing was happening with the toString() method:
+ *
+ *    js> f\u02B1.toString();
+ *
+ *    function f¦() {
+ *    }
+ *
+ *    js> f\u02B1.toString().toSource();
+ *    (new String("\nfunction f\xB1() {\n}\n"))
+ *
+ */
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = 58274;
+var summary = 'Testing functions with double-byte names';
+var ERR = 'UNEXPECTED ERROR! \n';
+var ERR_MALFORMED_NAME = ERR + 'Could not find function name in: \n\n';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+var sEval;
+var sName;
+
+
+sEval = "function f\u02B2() {return 42;}";
+eval(sEval);
+sName = getFunctionName(f\u02B2);
+
+// Test function call -
+status = inSection(1);
+actual = f\u02B2();
+expect = 42;
+addThis();
+
+// Test both characters of function name -
+status = inSection(2);
+actual = sName[0];
+expect = sEval[9];
+addThis();
+
+status = inSection(3);
+actual = sName[1];
+expect = sEval[10];
+addThis();
+
+
+
+sEval = "function f\u02B2\u0AAA () {return 84;}";
+eval(sEval);
+sName = getFunctionName(f\u02B2\u0AAA);
+
+// Test function call -
+status = inSection(4);
+actual = f\u02B2\u0AAA();
+expect = 84;
+addThis();
+
+// Test all three characters of function name -
+status = inSection(5);
+actual = sName[0];
+expect = sEval[9];
+addThis();
+
+status = inSection(6);
+actual = sName[1];
+expect = sEval[10];
+addThis();
+
+status = inSection(7);
+actual = sName[2];
+expect = sEval[11];
+addThis();
+
+
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+/*
+ * Goal: test that f.toString() contains the proper function name.
+ *
+ * Note, however, f.toString() is implementation-independent. For example,
+ * it may begin with '\nfunction' instead of 'function'. Therefore we use
+ * a regexp to make sure we extract the name properly.
+ *
+ * Here we assume that f has been defined by means of a function statement,
+ * and not a function expression (where it wouldn't have to have a name).
+ *
+ * Rhino uses a Unicode representation for f.toString(); whereas
+ * SpiderMonkey uses an ASCII representation, putting escape sequences
+ * for non-ASCII characters. For example, if a function is called f\u02B1,
+ * then in Rhino the toString() method will present a 2-character Unicode
+ * string for its name, whereas SpiderMonkey will present a 7-character
+ * ASCII string for its name: the string literal 'f\u02B1'.
+ *
+ * So we force the lexer to condense the string before using it.
+ * This will give uniform results in Rhino and SpiderMonkey.
+ */
+function getFunctionName(f)
+{
+  var s = condenseStr(f.toString());
+  var re = /\s*function\s+(\S+)\s*\(/;
+    var arr = s.match(re);
+
+  if (!(arr && arr[1]))
+    return ERR_MALFORMED_NAME + s;
+  return arr[1];
+}
+
+
+/*
+ * This function is the opposite of functions like escape(), which take
+ * Unicode characters and return escape sequences for them. Here, we force
+ * the lexer to turn escape sequences back into single characters.
+ *
+ * Note we can't simply do |eval(str)|, since in practice |str| will be an
+ * identifier somewhere in the program (e.g. a function name); thus |eval(str)|
+ * would return the object that the identifier represents: not what we want.
+ *
+ * So we surround |str| lexicographically with quotes to force the lexer to
+ * evaluate it as a string. Have to strip out any linefeeds first, however -
+ */
+function condenseStr(str)
+{
+  /*
+   * You won't be able to do the next step if |str| has
+   * any carriage returns or linefeeds in it. For example:
+   *
+   *  js> eval("'" + '\nHello' + "'");
+   *  1: SyntaxError: unterminated string literal:
+   *  1: '
+   *  1: ^
+   *
+   * So replace them with the empty string -
+   */
+  str = str.replace(/[\r\n]/g, '')
+    return eval("'" + str + "'");
+}
+
+
+function addThis()
+{
+  statusitems[UBound] = status;
+  actualvalues[UBound] = actual;
+  expectedvalues[UBound] = expect;
+  UBound++;
+}
+
+
+function test()
+{
+  printBugNumber(BUGNUMBER);
+  printStatus(summary);
+
+  for (var i=0; i<UBound; i++)
+  {
+    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
+  }
+}