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Issue 2451893004: Revert "Reland "Merge more Kernel infrastructure from kernel_sdk SDK fork."" (Closed)
Patch Set: Created 4 years, 1 month ago
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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file.
4
5 import 'expect.dart';
6
7 mkOne() => 1;
8 mkTwo() => 2;
9
10 testNormal() {
11 int result;
12 switch(mkOne()) {
13 case 0:
14 result = 0;
15 break;
16 case 1:
17 result = 1;
18 break;
19 case 2:
20 result = 2;
21 break;
22 default:
23 result = 3;
24 break;
25 }
26 Expect.isTrue(result == 1);
27 }
28
29 testDefault() {
30 int result;
31 switch(null) {
32 case 0:
33 result = 0;
34 break;
35 case 1:
36 result = 1;
37 break;
38 case 2:
39 result = 2;
40 break;
41 default:
42 result = 3;
43 break;
44 }
45 Expect.isTrue(result == 3);
46 }
47
48 testFallThrough() {
49 int result;
50 switch(mkOne()) {
51 case 0:
52 result = 0;
53 break;
54 case 1:
55 case 2:
56 result = 2;
57 break;
58 default:
59 result = 3;
60 break;
61 }
62 Expect.isTrue(result == 2);
63 }
64
65 testContinue() {
66 int result;
67 switch(mkTwo()) {
68 case 0:
69 result = 0;
70 break;
71
72 setitto1:
73 case 1:
74 result = 1;
75 continue setitto3;
76
77 case 2:
78 result = 2;
79 continue setitto1;
80
81 setitto3:
82 default:
83 result = 3;
84 break;
85 }
86 Expect.isTrue(result == 3);
87 }
88
89 testOnlyDefault() {
90 int result;
91 switch(mkTwo()) {
92 default:
93 result = 42;
94 }
95 Expect.isTrue(result == 42);
96 }
97
98 testOnlyDefaultWithBreak() {
99 int result;
100 switch(mkTwo()) {
101 default:
102 result = 42;
103 }
104 Expect.isTrue(result == 42);
105 }
106
107 String testReturn() {
108 switch(mkOne()) {
109 case 0: return "bad";
110 case 1: return "good";
111 default: return "bad";
112 }
113 }
114
115 regressionTest() {
116 Expect.isTrue(regressionTestHelper(0, 0) == -1);
117 Expect.isTrue(regressionTestHelper(4, 0) == -1);
118 Expect.isTrue(regressionTestHelper(4, 1) == 42);
119 }
120
121 regressionTestHelper(i, j) {
122 switch (i) {
123 case 4:
124 switch (j) {
125 case 1:
126 return 42;
127 }
128 }
129 return -1;
130 }
131
132 regressionTest2() {
133 var state = 1;
134 while (state < 2) {
135 switch (state) {
136 case 1:
137 state++;
138 break;
139 case 3:
140 case 4:
141 // We will translate this currently to an empty [Fragment] which can
142 // cause issues if we would like to append/prepend to it.
143 assert(false);
144 }
145 }
146 return [1];
147 }
148
149 regressionTest3() {
150 f(x) {
151 switch (x) {
152 case 1:
153 return 2;
154 case 2:
155 }
156 throw new UnsupportedError("Unexpected constant kind.");
157 }
158 Expect.isTrue(f(1) == 2);
159 }
160
161 main() {
162 testNormal();
163 testDefault();
164 testFallThrough();
165 testContinue();
166 testOnlyDefault();
167 testOnlyDefaultWithBreak();
168 regressionTest();
169 regressionTest2();
170 regressionTest3();
171
172 var result = testReturn();
173 Expect.isTrue(result == "good");
174 }
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