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| 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-sloppy --harmony-sloppy-let | |
| 29 | |
| 30 function props(x) { | |
| 31 var array = []; | |
| 32 for (let p in x) array.push(p); | |
| 33 return array.sort(); | |
| 34 } | |
| 35 | |
| 36 assertEquals(0, props({}).length); | |
| 37 assertEquals(1, props({x:1}).length); | |
| 38 assertEquals(2, props({x:1, y:2}).length); | |
| 39 | |
| 40 assertArrayEquals(["x"], props({x:1})); | |
| 41 assertArrayEquals(["x", "y"], props({x:1, y:2})); | |
| 42 assertArrayEquals(["x", "y", "zoom"], props({x:1, y:2, zoom:3})); | |
| 43 | |
| 44 assertEquals(0, props([]).length); | |
| 45 assertEquals(1, props([1]).length); | |
| 46 assertEquals(2, props([1,2]).length); | |
| 47 | |
| 48 assertArrayEquals(["0"], props([1])); | |
| 49 assertArrayEquals(["0", "1"], props([1,2])); | |
| 50 assertArrayEquals(["0", "1", "2"], props([1,2,3])); | |
| 51 | |
| 52 var o = {}; | |
| 53 var a = []; | |
| 54 let i = "outer_i"; | |
| 55 let s = "outer_s"; | |
| 56 for (let i = 0x0020; i < 0x01ff; i+=2) { | |
| 57 let s = 'char:' + String.fromCharCode(i); | |
| 58 a.push(s); | |
| 59 o[s] = i; | |
| 60 } | |
| 61 assertArrayEquals(a, props(o)); | |
| 62 assertEquals(i, "outer_i"); | |
| 63 assertEquals(s, "outer_s"); | |
| 64 | |
| 65 var a = []; | |
| 66 assertEquals(0, props(a).length); | |
| 67 a[Math.pow(2,30)-1] = 0; | |
| 68 assertEquals(1, props(a).length); | |
| 69 a[Math.pow(2,31)-1] = 0; | |
| 70 assertEquals(2, props(a).length); | |
| 71 a[1] = 0; | |
| 72 assertEquals(3, props(a).length); | |
| 73 | |
| 74 var result = ''; | |
| 75 for (let p in {a : [0], b : 1}) { result += p; } | |
| 76 assertEquals('ab', result); | |
| 77 | |
| 78 var result = ''; | |
| 79 for (let p in {a : {v:1}, b : 1}) { result += p; } | |
| 80 assertEquals('ab', result); | |
| 81 | |
| 82 var result = ''; | |
| 83 for (let p in { get a() {}, b : 1}) { result += p; } | |
| 84 assertEquals('ab', result); | |
| 85 | |
| 86 var result = ''; | |
| 87 for (let p in { get a() {}, set a(x) {}, b : 1}) { result += p; } | |
| 88 assertEquals('ab', result); | |
| 89 | |
| 90 | |
| 91 // Check that there is exactly one variable without initializer | |
| 92 // in a for-in statement with let variables. | |
| 93 assertThrows("function foo() { 'use strict'; for (let in {}) { } }", SyntaxError
); | |
| 94 assertThrows("function foo() { 'use strict'; for (let x = 3 in {}) { } }", Synta
xError); | |
| 95 assertThrows("function foo() { 'use strict'; for (let x, y in {}) { } }", Syntax
Error); | |
| 96 assertThrows("function foo() { 'use strict'; for (let x = 3, y in {}) { } }", Sy
ntaxError); | |
| 97 assertThrows("function foo() { 'use strict'; for (let x, y = 4 in {}) { } }", Sy
ntaxError); | |
| 98 assertThrows("function foo() { 'use strict'; for (let x = 3, y = 4 in {}) { } }"
, SyntaxError); | |
| 99 | |
| 100 | |
| 101 // In a normal for statement the iteration variable is | |
| 102 // freshly allocated for each iteration. | |
| 103 function closures1() { | |
| 104 let a = []; | |
| 105 for (let i = 0; i < 5; ++i) { | |
| 106 a.push(function () { return i; }); | |
| 107 } | |
| 108 for (let j = 0; j < 5; ++j) { | |
| 109 assertEquals(j, a[j]()); | |
| 110 } | |
| 111 } | |
| 112 closures1(); | |
| 113 | |
| 114 | |
| 115 function closures2() { | |
| 116 let a = [], b = []; | |
| 117 for (let i = 0, j = 10; i < 5; ++i, ++j) { | |
| 118 a.push(function () { return i; }); | |
| 119 b.push(function () { return j; }); | |
| 120 } | |
| 121 for (let k = 0; k < 5; ++k) { | |
| 122 assertEquals(k, a[k]()); | |
| 123 assertEquals(k + 10, b[k]()); | |
| 124 } | |
| 125 } | |
| 126 closures2(); | |
| 127 | |
| 128 | |
| 129 function closure_in_for_init() { | |
| 130 let a = []; | |
| 131 for (let i = 0, f = function() { return i }; i < 5; ++i) { | |
| 132 a.push(f); | |
| 133 } | |
| 134 for (let k = 0; k < 5; ++k) { | |
| 135 assertEquals(0, a[k]()); | |
| 136 } | |
| 137 } | |
| 138 closure_in_for_init(); | |
| 139 | |
| 140 | |
| 141 function closure_in_for_cond() { | |
| 142 let a = []; | |
| 143 for (let i = 0; a.push(function () { return i; }), i < 5; ++i) { } | |
| 144 for (let k = 0; k < 5; ++k) { | |
| 145 assertEquals(k, a[k]()); | |
| 146 } | |
| 147 } | |
| 148 closure_in_for_cond(); | |
| 149 | |
| 150 | |
| 151 function closure_in_for_next() { | |
| 152 let a = []; | |
| 153 for (let i = 0; i < 5; a.push(function () { return i; }), ++i) { } | |
| 154 for (let k = 0; k < 5; ++k) { | |
| 155 assertEquals(k + 1, a[k]()); | |
| 156 } | |
| 157 } | |
| 158 closure_in_for_next(); | |
| 159 | |
| 160 | |
| 161 // In a for-in statement the iteration variable is fresh | |
| 162 // for each iteration. | |
| 163 function closures3(x) { | |
| 164 let a = []; | |
| 165 for (let p in x) { | |
| 166 a.push(function () { return p; }); | |
| 167 } | |
| 168 let k = 0; | |
| 169 for (let q in x) { | |
| 170 assertEquals(q, a[k]()); | |
| 171 ++k; | |
| 172 } | |
| 173 } | |
| 174 closures3({a : [0], b : 1, c : {v : 1}, get d() {}, set e(x) {}}); | |
| 175 | |
| 176 // Check normal for statement completion values. | |
| 177 assertEquals(1, eval("for (let i = 0; i < 10; i++) { 1; }")); | |
| 178 assertEquals(9, eval("for (let i = 0; i < 10; i++) { i; }")); | |
| 179 assertEquals(undefined, eval("for (let i = 0; false;) { }")); | |
| 180 assertEquals(undefined, eval("for (const i = 0; false;) { }")); | |
| 181 assertEquals(undefined, eval("for (let i = 0; i < 10; i++) { }")); | |
| 182 assertEquals(undefined, eval("for (let i = 0; false;) { i; }")); | |
| 183 assertEquals(undefined, eval("for (const i = 0; false;) { i; }")); | |
| 184 assertEquals(undefined, eval("for (let i = 0; true;) { break; }")); | |
| 185 assertEquals(undefined, eval("for (const i = 0; true;) { break; }")); | |
| 186 assertEquals(undefined, eval("for (let i = 0; i < 10; i++) { continue; }")); | |
| 187 assertEquals(undefined, eval("for (let i = 0; true;) { break; i; }")); | |
| 188 assertEquals(undefined, eval("for (const i = 0; true;) { break; i; }")); | |
| 189 assertEquals(undefined, eval("for (let i = 0; i < 10; i++) { continue; i; }")); | |
| 190 assertEquals(0, eval("for (let i = 0; true;) { i; break; }")); | |
| 191 assertEquals(0, eval("for (const i = 0; true;) { i; break; }")); | |
| 192 assertEquals(9, eval("for (let i = 0; i < 10; i++) { i; continue; }")); | |
| 193 assertEquals( | |
| 194 undefined, eval("for (let i = 0; true; i++) { i; if (i >= 3) break; }")); | |
| 195 assertEquals( | |
| 196 undefined, eval("for (let i = 0; true; i++) { if (i >= 3) break; i; }")); | |
| 197 assertEquals( | |
| 198 undefined, eval("for (let i = 0; i < 10; i++) { if (i >= 3) continue; i; }")); | |
| 199 assertEquals(undefined, eval("foo: for (let i = 0; true;) { break foo; }")); | |
| 200 assertEquals(undefined, eval("foo: for (const i = 0; true;) { break foo; }")); | |
| 201 assertEquals(3, eval("foo: for (let i = 3; true;) { i; break foo; }")); | |
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