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/**
* @test /nodynamiccopyright/
* @summary Verify error reports for erroneous deconstruction patterns are sensible
* @compile/fail/ref=DeconstructionPatternErrors.out -XDrawDiagnostics -XDshould-stop.at=FLOW -XDdev DeconstructionPatternErrors.java
*/
import java.util.ArrayList;
import java.util.List;
public class DeconstructionPatternErrors {
public static void meth() throws Throwable {
Object p;
p = new P(42);
if (p instanceof P3(ArrayList<Integer> l));
if (p instanceof P4(ArrayList<Integer> l));
if (p instanceof P5(int i));
if (p instanceof P(String s));
if (p instanceof P5(P(var v)));
if (p instanceof P2(var v1)); //too few nested patterns
if (p instanceof P2(Runnable v1)); //too few nested patterns
if (p instanceof P(var v1, var v2)); //too many nested patterns
if (p instanceof P(int v1, int v2)); //too many nested patterns
if (p instanceof P(int v1, Unresolvable v2)); //too many nested patterns
if (p instanceof GenRecord<String>(var v)); //incorrect generic type
if (p instanceof P4(GenRecord<String>(var v))); //incorrect generic type
if (p instanceof GenRecord<String>(Integer v)); //inconsistency in types
if (p instanceof P2(var v, var v)); //duplicated variables
if (p instanceof P6(P2(var v1, var v2), P2(var v1, var v2))); //duplicated variables
GenRecord<String> r1 = null;
if (r1 instanceof GenRecord(String s)) {}
switch (r1) {
case GenRecord(String s) -> {}
}
if (r1 instanceof GenRecord<>(String s)) {}
switch (r1) {
case GenRecord<>(String s) -> {}
}
boolean b = p instanceof P(int i) p; //introducing a variable for the record pattern
}
public record P(int i) {
}
public record P2(Runnable r1, Runnable r2) {}
public record P3(List<String> l) {}
public record P4(Object o) {}
public record P5(String s) {}
public record P6(Object o1, Object o2) {}
public record P7(int i) {}
public record GenRecord<T>(T s) {}
}
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