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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: 19 June 2003
+ * SUMMARY: Testing regexp submatches with quantifiers
+ *
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=209919
+ *
+ */
+//-----------------------------------------------------------------------------
+var i = 0;
+var BUGNUMBER = 209919;
+var summary = 'Testing regexp submatches with quantifiers';
+var status = '';
+var statusmessages = new Array();
+var pattern = '';
+var patterns = new Array();
+var string = '';
+var strings = new Array();
+var actualmatch = '';
+var actualmatches = new Array();
+var expectedmatch = '';
+var expectedmatches = new Array();
+
+
+/*
+ * Waldemar: "ECMA-262 15.10.2.5, third algorithm, step 2.1 states that
+ * once the minimum repeat count (which is 0 for *, 1 for +, etc.) has
+ * been satisfied, an atom being repeated must not match the empty string."
+ *
+ * In this example, the minimum repeat count is 0, so the last thing the
+ * capturing parens is permitted to contain is the 'a'. It may NOT go on
+ * to capture the '' at the $ position of 'a', even though '' satifies
+ * the condition b*
+ *
+ */
+status = inSection(1);
+string = 'a';
+pattern = /(a|b*)*/;
+actualmatch = string.match(pattern);
+expectedmatch = Array(string, 'a');
+addThis();
+
+
+/*
+ * In this example, the minimum repeat count is 5, so the capturing parens
+ * captures the 'a', then goes on to capture the '' at the $ position of 'a'
+ * 4 times before it has to stop. Therefore the last thing it contains is ''.
+ */
+status = inSection(2);
+string = 'a';
+pattern = /(a|b*){5,}/;
+actualmatch = string.match(pattern);
+expectedmatch = Array(string, '');
+addThis();
+
+
+/*
+ * Reduction of the above examples to contain only the condition b*
+ * inside the capturing parens. This can be even harder to grasp!
+ *
+ * The global match is the '' at the ^ position of 'a', but the parens
+ * is NOT permitted to capture it since the minimum repeat count is 0!
+ */
+status = inSection(3);
+string = 'a';
+pattern = /(b*)*/;
+actualmatch = string.match(pattern);
+expectedmatch = Array('', undefined);
+addThis();
+
+
+/*
+ * Here we have used the + quantifier (repeat count 1) outside the parens.
+ * Therefore the parens must capture at least once before stopping, so it
+ * does capture the '' this time -
+ */
+status = inSection(4);
+string = 'a';
+pattern = /(b*)+/;
+actualmatch = string.match(pattern);
+expectedmatch = Array('', '');
+addThis();
+
+
+/*
+ * More complex examples -
+ */
+pattern = /^\-?(\d{1,}|\.{0,})*(\,\d{1,})?$/;
+
+status = inSection(5);
+string = '100.00';
+actualmatch = string.match(pattern);
+expectedmatch = Array(string, '00', undefined);
+addThis();
+
+status = inSection(6);
+string = '100,00';
+actualmatch = string.match(pattern);
+expectedmatch = Array(string, '100', ',00');
+addThis();
+
+status = inSection(7);
+string = '1.000,00';
+actualmatch = string.match(pattern);
+expectedmatch = Array(string, '000', ',00');
+addThis();
+
+
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+function addThis()
+{
+ statusmessages[i] = status;
+ patterns[i] = pattern;
+ strings[i] = string;
+ actualmatches[i] = actualmatch;
+ expectedmatches[i] = expectedmatch;
+ i++;
+}
+
+
+function test()
+{
+ enterFunc ('test');
+ printBugNumber(BUGNUMBER);
+ printStatus (summary);
+ testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
+ exitFunc ('test');
+}