typecoerce.js revision 56:59970b70ebb5
125603Skjc/* 255205Speter * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. 325603Skjc * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 425603Skjc * 525603Skjc * This code is free software; you can redistribute it and/or modify it 625603Skjc * under the terms of the GNU General Public License version 2 only, as 725603Skjc * published by the Free Software Foundation. 825603Skjc * 925603Skjc * This code is distributed in the hope that it will be useful, but WITHOUT 1025603Skjc * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1125603Skjc * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1225603Skjc * version 2 for more details (a copy is included in the LICENSE file that 1325603Skjc * accompanied this code). 1425603Skjc * 1525603Skjc * You should have received a copy of the GNU General Public License version 1625603Skjc * 2 along with this work; if not, write to the Free Software Foundation, 1725603Skjc * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1825603Skjc * 1925603Skjc * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2025603Skjc * or visit www.oracle.com if you need additional information or have any 2125603Skjc * questions. 2225603Skjc */ 2325603Skjc 2425603Skjc/** 2525603Skjc * There was a bug in the old Lower that didn't fully propagate type information 2625603Skjc * by way of assignment. 'q' in the example below would have finished a double 2725603Skjc * even though it can get an object value through the assignment 'q = l' 2825603Skjc * 2925603Skjc * Furthermore, this caused type coercion to be done at q = l, and not a q = q * 2, 3025603Skjc * which is a bug. This test ensures it happens in the correct order 3125603Skjc * 3225603Skjc * @test 3325603Skjc * @run 3425603Skjc */ 3525603Skjc 3625603Skjcfunction createObject() { 3725603Skjc var obj = { valueOf: function() { print("toNumber coercion"); return 17; }} 3825603Skjc return obj; 3925603Skjc} 40114739Sharti 41114739Shartifunction f() { 42114739Sharti var l = 1.2; //number 43114739Sharti var q = 2.3; //number 44114739Sharti for (var i = 0; i < 2; i++) { 45114739Sharti q = l; // q = toNumber(l), no coercion here 46114739Sharti print("assignment done"); 47114739Sharti q = q * 2; // q = q * 2, coercion here 48114739Sharti print("multiplication done"); 49116441Sharti l = createObject(); 50116441Sharti } 51116441Sharti} 52116441Sharti 53114739Shartif(); 54114739Sharti