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8223305: Compiler support for Switch Expressions

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Reviewed-by: mcimadamore, vromero
This commit is contained in:
Jan Lahoda 2019-06-10 05:09:52 +02:00
parent c569ad302a
commit b34b2d993c
88 changed files with 2033 additions and 829 deletions
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30
test/langtools/tools/javac/switchexpr/ExpressionSwitch.java
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@ -39,15 +39,15 @@ public class ExpressionSwitch {
private String print(T t) {
return switch (t) {
case A -> "A";
case B -> { break "B"; }
default -> { break "other"; }
case B -> { yield "B"; }
default -> { yield "other"; }
};
}
private String exhaustive1(T t) {
return switch (t) {
case A -> "A";
case B -> { break "B"; }
case B -> { yield "B"; }
case C -> "C";
case D -> "D";
};
@ -64,25 +64,25 @@ public class ExpressionSwitch {
private String scopesIsolated(T t) {
return switch (t) {
case A -> { String res = "A"; break res;}
case B -> { String res = "B"; break res;}
default -> { String res = "default"; break res;}
case A -> { String res = "A"; yield res;}
case B -> { String res = "B"; yield res;}
default -> { String res = "default"; yield res;}
};
}
private Supplier<String> lambdas1(T t) {
return switch (t) {
case A -> () -> "A";
case B -> { break () -> "B"; }
case B -> { yield () -> "B"; }
default -> () -> "default";
};
}
private Supplier<String> lambdas2(T t) {
return switch (t) {
case A: break () -> "A";
case B: { break () -> "B"; }
default: break () -> "default";
case A: yield () -> "A";
case B: { yield () -> "B"; }
default: yield () -> "default";
};
}
@ -91,16 +91,16 @@ public class ExpressionSwitch {
? -2
: switch (s) {
case "A", "B" -> 0;
case "C" -> { break 1; }
case "C" -> { yield 1; }
default -> -1;
};
}
private int convert2(String s) {
return switch (s) {
case "A", "B": break 0;
case "C": break 1;
default: break -1;
case "A", "B": yield 0;
case "C": yield 1;
default: yield -1;
};
}
@ -112,7 +112,7 @@ public class ExpressionSwitch {
default: break STOP;
}
return switch (t) {
default: break good;
default: yield good;
};
}
}