8214031: Assertion error in value break statement with conditional operator in switch expression
Summary: Correcting handling of boolean-valued switch expressions when true/false; generating them directly rather than desugaring in Lower.
Reviewed-by: mcimadamore
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
/*
* @test
* @bug 8214031
* @summary Verify switch expressions embedded in various statements work properly.
* @compile --enable-preview -source 12 ExpressionSwitchEmbedding.java
* @run main/othervm --enable-preview ExpressionSwitchEmbedding
*/
public class ExpressionSwitchEmbedding {
public static void main(String... args) {
new ExpressionSwitchEmbedding().run();
}
private void run() {
{
int i = 6;
int o = 0;
while (switch (i) {
case 1: i = 0; break true;
case 2: i = 1; break true;
case 3, 4: i--;
if (i == 2 || i == 4) {
break switch (i) {
case 2 -> true;
case 4 -> false;
default -> throw new IllegalStateException();
};
} else {
break true;
}
default: i--; break switch (i) {
case -1 -> false;
case 3 -> true;
default -> true;
};
}) {
o++;
}
if (o != 6 && i >= 0) {
throw new IllegalStateException();
}
}
{
int i = 6;
int o = 0;
if (switch (i) {
case 1: i = 0; break true;
case 2: i = 1; break true;
case 3, 4: i--;
if (i == 2 || i == 4) {
break (switch (i) {
case 2 -> 3;
case 4 -> 5;
default -> throw new IllegalStateException();
}) == i + 1;
} else {
break true;
}
default: i--; break switch (i) {
case -1 -> false;
case 3 -> true;
default -> true;
};
}) {
o++;
}
if (o != 1 && i != 5) {
throw new IllegalStateException();
}
}
{
int o = 0;
for (int i = 6; (switch (i) {
case 1: i = 0; break true;
case 2: i = 1; break true;
case 3, 4: i--;
if (i == 2 || i == 4) {
break switch (i) {
case 2 -> true;
case 4 -> false;
default -> throw new IllegalStateException();
};
} else {
break true;
}
default: i--; break switch (i) {
case -1 -> false;
case 3 -> true;
default -> true;
};
}); ) {
o++;
}
if (o != 6) {
throw new IllegalStateException();
}
}
{
int i = 6;
int o = 0;
do {
o++;
} while (switch (i) {
case 1: i = 0; break true;
case 2: i = 1; break true;
case 3, 4: i--;
if (i == 2 || i == 4) {
break switch (i) {
case 2 -> true;
case 4 -> false;
default -> throw new IllegalStateException();
};
} else {
break true;
}
default: i--; break switch (i) {
case -1 -> false;
case 3 -> true;
default -> true;
};
});
if (o != 6 && i >= 0) {
throw new IllegalStateException();
}
}
}
}