1 // Copyright 2011 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 // Flags: --harmony-scoping 29 30 // Test that we throw early syntax errors in harmony mode 31 // when using an immutable binding in an assigment or with 32 // prefix/postfix decrement/increment operators. 33 // TODO(ES6): properly activate extended mode 34 "use strict"; 35 36 37 // Function local const. 38 function constDecl0(use) { 39 return "(function() { const constvar = 1; " + use + "; });"; 40 } 41 42 43 function constDecl1(use) { 44 return "(function() { " + use + "; const constvar = 1; });"; 45 } 46 47 48 // Function local const, assign from eval. 49 function constDecl2(use) { 50 use = "eval('(function() { " + use + " })')"; 51 return "(function() { const constvar = 1; " + use + "; })();"; 52 } 53 54 55 function constDecl3(use) { 56 use = "eval('(function() { " + use + " })')"; 57 return "(function() { " + use + "; const constvar = 1; })();"; 58 } 59 60 61 // Block local const. 62 function constDecl4(use) { 63 return "(function() { { const constvar = 1; " + use + "; } });"; 64 } 65 66 67 function constDecl5(use) { 68 return "(function() { { " + use + "; const constvar = 1; } });"; 69 } 70 71 72 // Block local const, assign from eval. 73 function constDecl6(use) { 74 use = "eval('(function() {" + use + "})')"; 75 return "(function() { { const constvar = 1; " + use + "; } })();"; 76 } 77 78 79 function constDecl7(use) { 80 use = "eval('(function() {" + use + "})')"; 81 return "(function() { { " + use + "; const constvar = 1; } })();"; 82 } 83 84 85 // Function expression name. 86 function constDecl8(use) { 87 return "(function constvar() { " + use + "; });"; 88 } 89 90 91 // Function expression name, assign from eval. 92 function constDecl9(use) { 93 use = "eval('(function(){" + use + "})')"; 94 return "(function constvar() { " + use + "; })();"; 95 } 96 97 let decls = [ constDecl0, 98 constDecl1, 99 constDecl2, 100 constDecl3, 101 constDecl4, 102 constDecl5, 103 constDecl6, 104 constDecl7, 105 constDecl8, 106 constDecl9 107 ]; 108 let uses = [ 'constvar = 1;', 109 'constvar += 1;', 110 '++constvar;', 111 'constvar++;' 112 ]; 113 114 function Test(d,u) { 115 'use strict'; 116 try { 117 print(d(u)); 118 eval(d(u)); 119 } catch (e) { 120 assertInstanceof(e, SyntaxError); 121 assertTrue(e.toString().indexOf("Assignment to constant variable") >= 0); 122 return; 123 } 124 assertUnreachable(); 125 } 126 127 for (var d = 0; d < decls.length; ++d) { 128 for (var u = 0; u < uses.length; ++u) { 129 Test(decls[d], uses[u]); 130 } 131 } 132