97 lines
2.5 KiB
Java
97 lines
2.5 KiB
Java
/*
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* @test /nodynamiccopyright/
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* @bug 8206986 8254286 8274347
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* @summary Check types inferred for switch expressions.
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* @compile/fail/ref=ExpressionSwitchInfer.out -XDrawDiagnostics 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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yield 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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void bug8254286(I1 i1, I2 i2, int s) {
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var t1 = switch (s) {
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case 1 -> i1;
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case 2 -> null;
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default -> i2;
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};
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t1.m();
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var t2 = switch (s) {
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case 2 -> null;
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case 1 -> i1;
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default -> i2;
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};
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t2.m();
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var t3 = switch (s) {
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case 1 -> i1;
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default -> i2;
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case 2 -> null;
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};
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t3.m();
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var t4 = switch (s) {
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case 1 -> i1;
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default -> null;
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};
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t4.m();
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var t5 = switch (s) {
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default -> null;
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case 1 -> i1;
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};
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t5.m();
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var t6 = switch (s) {
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default -> null;
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};
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var t7 = switch (s) {
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case 1 -> null;
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default -> null;
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};
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var t8 = switch (s) {
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case 1 -> null;
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case 2 -> null;
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default -> null;
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};
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}
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interface I {
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void m();
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}
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interface I1 extends I {}
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interface I2 extends I {}
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void preflow(int i, int j) {
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System.out.println(switch (i) {
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case 1 -> switch (j) {
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case 1 -> "one and one";
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default -> "one and many";
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};
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case 2 -> "two";
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default -> "many";
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});
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}
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}
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