test/langtools/tools/javac/switchextra/DefiniteAssignment2.java
author jlahoda
Tue, 12 Nov 2019 06:32:13 +0000
changeset 59021 cfc7bb9a5a92
parent 55306 ea43db53de91
permissions -rw-r--r--
8232684: Make switch expressions final Reviewed-by: alanb, mcimadamore, kvn
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/**
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 * @test /nodynamiccopyright/
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 * @summary Verify that definite assignment works (illegal code)
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 * @compile/fail/ref=DefiniteAssignment2.out -XDrawDiagnostics DefiniteAssignment2.java
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 */
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public class DefiniteAssignment2 {
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    public static void main(String[] args) {
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        int a = 0;
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        E e = E.A;
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        {
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        int x;
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        switch(a) {
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            case 0: break;
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            default: x = 1; break;
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        }
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        System.err.println(x);
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        }
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        {
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        int x;
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        switch(a) {
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            case 0 -> {}
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            default -> x = 1;
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        }
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        System.err.println(x);
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        }
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        {
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        int x;
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        switch(a) {
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            case 0: x = 0; break;
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            default:
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        }
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        System.err.println(x);
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        }
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        {
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        int x;
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        switch(e) {
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            case A, B, C -> x = 0;
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        }
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        System.err.println(x);
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        }
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        {
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        int x;
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        switch(e) {
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            case A, B, C -> { x = 0; }
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        }
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        System.err.println(x);
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        }
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        {
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        int x;
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        switch(e) {
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            case A, B -> { x = 0; }
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            case C -> throw new IllegalStateException();
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        }
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        System.err.println(x);
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        }
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    }
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    enum E {
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        A, B, C;
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    }
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}