Cylic reference involving class when using java interop #10567
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Self-contained example: // build.sbt
scalaVersion := "3.0.0-M2"
compileOrder := CompileOrder.JavaThenScala// SchemaBuilder.java
public class SchemaBuilder {
public static class Schema {}
public static TypeBuilder<Schema> builder() {
throw new UnsupportedOperationException();
}
public static class NamespacedBuilder<R, S extends NamespacedBuilder<R, S>> {}
public static class FixedBuilder<R> extends NamespacedBuilder<R, FixedBuilder<R>> {}
public static class TypeBuilder<R> {
public FixedBuilder<R> fixed(String name) {
throw new UnsupportedOperationException();
}
}
}// Main.scala
object Test {
val bldr = SchemaBuilder.builder()
val oops = bldr.fixed("foo")
} |
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Here is another example from #10623 import org.apache.avro.{ SchemaBuilder, Schema }
import scala.collection.JavaConverters._
def schema = Schema.createRecord("A", "", "",false,
Seq(new Schema.Field("list", SchemaBuilder.array().items(SchemaBuilder.builder.stringType))).asJava
)that results in the same error. |
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My temporary workaround is to add a Java file to my project that encapsulates use of the |
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@bplommer Had a similar problem. The RC1 seems to solve this. Maybe it will solve it for you too? |
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I can still reproduce both problems on master. |
liufengyun
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Feb 19, 2021
Co-authored-by: Guillaume Martres <[email protected]>
smarter
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Feb 19, 2021
Fix #10567: avoid forcing symbols in classfile parser
dotbg
pushed a commit
to dotbg/dotty
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Feb 24, 2021
Co-authored-by: Guillaume Martres <[email protected]>
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Similar to #9492.
I get a compiler error when using Java code from Apache Avro. The specific file is at https://github.com/apache/avro/blob/master/lang/java/avro/src/main/java/org/apache/avro/SchemaBuilder.java
Minimized code
scastie reproduction (3.0.0-M1)
Output with
-Ydebug-error:Expectation
It should compile
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