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Issue 1007783002: Remove --harmony-scoping flag. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: CR feedback Created 5 years, 9 months ago
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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-scoping
29
30 "use strict";
31
32 // We want to test the context chain shape. In each of the tests cases
33 // below, the outer with is to force a runtime lookup of the identifier 'x'
34 // to actually verify that the inner context has been discarded. A static
35 // lookup of 'x' might accidentally succeed.
36
37 {
38 let x = 2;
39 L: {
40 let x = 3;
41 assertEquals(3, x);
42 break L;
43 assertTrue(false);
44 }
45 assertEquals(2, x);
46 }
47
48 do {
49 let x = 4;
50 assertEquals(4,x);
51 {
52 let x = 5;
53 assertEquals(5, x);
54 continue;
55 assertTrue(false);
56 }
57 } while (false);
58
59 var caught = false;
60 try {
61 {
62 let xx = 18;
63 throw 25;
64 assertTrue(false);
65 }
66 } catch (e) {
67 caught = true;
68 assertEquals(25, e);
69 (function () {
70 try {
71 // NOTE: This checks that the block scope containing xx has been
72 // removed from the context chain.
73 eval('xx');
74 assertTrue(false); // should not reach here
75 } catch (e2) {
76 assertTrue(e2 instanceof ReferenceError);
77 }
78 })();
79 }
80 assertTrue(caught);
81
82
83 (function(x) {
84 label: {
85 let x = 'inner';
86 break label;
87 }
88 assertEquals('outer', eval('x'));
89 })('outer');
90
91
92 (function(x) {
93 label: {
94 let x = 'middle';
95 {
96 let x = 'inner';
97 break label;
98 }
99 }
100 assertEquals('outer', eval('x'));
101 })('outer');
102
103
104 (function(x) {
105 for (var i = 0; i < 10; ++i) {
106 let x = 'inner' + i;
107 continue;
108 }
109 assertEquals('outer', eval('x'));
110 })('outer');
111
112
113 (function(x) {
114 label: for (var i = 0; i < 10; ++i) {
115 let x = 'middle' + i;
116 for (var j = 0; j < 10; ++j) {
117 let x = 'inner' + j;
118 continue label;
119 }
120 }
121 assertEquals('outer', eval('x'));
122 })('outer');
123
124
125 (function(x) {
126 try {
127 let x = 'inner';
128 throw 0;
129 } catch (e) {
130 assertEquals('outer', eval('x'));
131 }
132 })('outer');
133
134
135 (function(x) {
136 try {
137 let x = 'middle';
138 {
139 let x = 'inner';
140 throw 0;
141 }
142 } catch (e) {
143 assertEquals('outer', eval('x'));
144 }
145 })('outer');
146
147
148 try {
149 (function(x) {
150 try {
151 let x = 'inner';
152 throw 0;
153 } finally {
154 assertEquals('outer', eval('x'));
155 }
156 })('outer');
157 } catch (e) {
158 if (e instanceof MjsUnitAssertionError) throw e;
159 }
160
161
162 try {
163 (function(x) {
164 try {
165 let x = 'middle';
166 {
167 let x = 'inner';
168 throw 0;
169 }
170 } finally {
171 assertEquals('outer', eval('x'));
172 }
173 })('outer');
174 } catch (e) {
175 if (e instanceof MjsUnitAssertionError) throw e;
176 }
177
178
179 // Verify that the context is correctly set in the stack frame after exiting
180 // from with.
181 function f() {}
182
183 (function(x) {
184 label: {
185 let x = 'inner';
186 break label;
187 }
188 f(); // The context could be restored from the stack after the call.
189 assertEquals('outer', eval('x'));
190 })('outer');
191
192
193 (function(x) {
194 for (var i = 0; i < 10; ++i) {
195 let x = 'inner';
196 continue;
197 }
198 f();
199 assertEquals('outer', eval('x'));
200 })('outer');
201
202
203 (function(x) {
204 try {
205 let x = 'inner';
206 throw 0;
207 } catch (e) {
208 f();
209 assertEquals('outer', eval('x'));
210 }
211 })('outer');
212
213
214 try {
215 (function(x) {
216 try {
217 let x = 'inner';
218 throw 0;
219 } finally {
220 f();
221 assertEquals('outer', eval('x'));
222 }
223 })('outer');
224 } catch (e) {
225 if (e instanceof MjsUnitAssertionError) throw e;
226 }
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