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import org.checkerframework.common.value.qual.*;
// Test case for switch statements. Not really about the value checker (more about
// whether the semantics of switch are correct in general), but I needed some
// checker to try it out on.
class Switch {
void test1(@IntVal({1, 2, 3, 4, 5}) int x) {
// easy version, no fall through
switch (x) {
case 1:
@IntVal({1}) int y = x;
break;
case 2:
@IntVal({2}) int w = x;
// :: error: (assignment.type.incompatible)
@IntVal({1}) int z = x;
break;
default:
@IntVal({3, 4, 5}) int q = x;
break;
}
}
void test2(@IntVal({1, 2, 3, 4, 5}) int x) {
// harder version, fall through
switch (x) {
case 1:
@IntVal({1}) int y = x;
case 2:
case 3:
@IntVal({1, 2, 3}) int w = x;
// :: error: (assignment.type.incompatible)
@IntVal({2, 3}) int z = x;
// :: error: (assignment.type.incompatible)
@IntVal({3}) int z1 = x;
break;
default:
@IntVal({4, 5}) int q = x;
// :: error: (assignment.type.incompatible)
@IntVal(5) int q2 = x;
break;
}
}
void test3(@IntVal({1, 2, 3, 4, 5}) int x) {
// harder version, fall through
switch (x) {
case 1:
@IntVal({1}) int y = x;
case 2:
case 3:
@IntVal({1, 2, 3}) int w = x;
// :: error: (assignment.type.incompatible)
@IntVal({2, 3}) int z = x;
// :: error: (assignment.type.incompatible)
@IntVal({3}) int z1 = x;
break;
case 4:
default:
@IntVal({4, 5}) int q = x;
// :: error: (assignment.type.incompatible)
@IntVal(5) int q2 = x;
break;
}
}
void test4(int x) {
switch (x) {
case 1:
@IntVal({1}) int y = x;
break;
case 2:
case 3:
@IntVal({2, 3}) int z = x;
break;
case 4:
default:
return;
}
@IntVal({1, 2, 3}) int y = x;
// :: error: (assignment.type.incompatible)
@IntVal(4) int y2 = x;
}
void test5(@IntVal({0, 1, 2, 3, 4}) int x) {
@IntVal({0, 1, 2, 3, 4, 5}) int y = x;
switch (y = y + 1) {
case 1:
@IntVal({1}) int a = y;
// :: error: (assignment.type.incompatible)
@IntVal({2}) int b = y;
case 2:
case 3:
@IntVal({1, 2, 3}) int c = y;
break;
default:
// :: error: (assignment.type.incompatible)
@IntVal({4}) int d = y;
// :: error: (assignment.type.incompatible)
@IntVal({5}) int e = y;
@IntVal({4, 5}) int f = y;
break;
}
}
void testInts1(@IntRange(from = 0, to = 100) int x) {
switch (x) {
case 0:
case 1:
case 2:
@IntVal({0, 1, 2}) int z = x;
return;
default:
}
@IntRange(from = 3, to = 100) int z = x;
}
void testInts2(@IntRange(from = 0, to = 100) int x) {
// harder version, fall through
switch (x) {
case 0:
@IntVal(0) int a = x;
break;
case 1:
@IntVal(1) int b = x;
break;
case 2:
@IntVal(2) int c = x;
default:
@IntRange(from = 2, to = 100) int d = x;
break;
}
}
void testChars(char x) {
switch (x) {
case 'a':
case 2:
@IntVal({'a', 2}) int z = x;
break;
case 'b':
@IntVal('b') int v = x;
break;
default:
return;
}
@IntVal({'a', 2, 'b'}) int y = x;
}
void testStrings1(String s) {
switch (s) {
case "Good":
@StringVal("Good") String x = s;
case "Bye":
@StringVal({"Good", "Bye"}) String y = s;
break;
case "Hello":
@StringVal("Hello") String z = s;
break;
default:
return;
}
@StringVal({"Good", "Bye", "Hello"}) String q = s;
}
void testStrings2(String s) {
String a;
switch (a = s) {
case "Good":
@StringVal("Good") String x1 = a;
@StringVal("Good") String x2 = s;
case "Bye":
@StringVal({"Good", "Bye"}) String y1 = a;
@StringVal({"Good", "Bye"}) String y2 = s;
break;
case "Hello":
@StringVal("Hello") String z1 = a;
@StringVal("Hello") String z2 = s;
break;
default:
return;
}
@StringVal({"Good", "Bye", "Hello"}) String q1 = a;
@StringVal({"Good", "Bye", "Hello"}) String q2 = s;
}
}
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