b3b644438e
8207405: Compiler Tree API support for Switch Expressions (Preview) Support for switch expression, switch with rules and multiple constants for cases. Reviewed-by: jjg, mcimadamore, vromero
38 lines
1.1 KiB
Java
38 lines
1.1 KiB
Java
/*
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* @test /nodynamiccopyright/
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* @bug 8206986
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* @summary Check types inferred for switch expressions.
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* @compile/fail/ref=ExpressionSwitchInfer.out -XDrawDiagnostics --enable-preview -source 12 ExpressionSwitchInfer.java
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*/
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import java.util.ArrayList;
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import java.util.List;
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public class ExpressionSwitchInfer {
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private static final String NULL = "null";
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private <T> T test(List<T> l, Class<T> c, String param) {
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test(param == NULL ? new ArrayList<>() : new ArrayList<>(), CharSequence.class, param).charAt(0);
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test(param == NULL ? new ArrayList<>() : new ArrayList<>(), CharSequence.class, param).substring(0);
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test(switch (param) {
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case NULL -> new ArrayList<>();
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default -> new ArrayList<>();
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}, CharSequence.class, param).charAt(0);
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test(switch (param) {
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case NULL -> new ArrayList<>();
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default -> new ArrayList<>();
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}, CharSequence.class, param).substring(0);
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String str = switch (param) {
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case "" -> {
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break 0;
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} default ->"default";
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};
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return null;
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}
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}
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