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/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* NASHORN-759 - Efficient string concatenation with + operator
*
* @test
* @run
*/
// Check invalidation of callsite for non-string CharSequence
function checkProps(s) {
print(typeof s);
print(typeof s.length);
print(s.charCodeAt === String.prototype.charCodeAt);
print();
}
var s1 = "foo";
var s2 = "bar";
var s3 = s1 + s2 + s1 + s2;
var s4 = new java.lang.StringBuilder("abc");
checkProps(s1);
checkProps(s2);
checkProps(s3);
checkProps(s4);
// Rebuild string and compare to original
function rebuildString(s) {
var buf = s.split("");
print(buf);
while (buf.length > 1) {
var result = [];
buf.reduce(function(previous, current, index) {
if (previous) {
result.push(previous + current);
return null;
} else if (index === buf.length - 1) {
result.push(current);
return null;
} else {
return current;
}
});
buf = result;
print(buf);
}
return buf[0];
}
var n1 = "The quick gray nashorn jumps over the lazy zebra.";
var n2 = rebuildString(n1);
print(n1, n2, n2.length, n1 == n2, n1 === n2, n1 < n2, n1 <= n2, n1 > n2, n1 >= n2);
checkProps(n2);
var n3 = rebuildString(rebuildString(n2));
print(n3, n3.length, n1 == n3, n2 == n3, n1 === n3, n2 === n3);
checkProps(n3);
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