Peter Schmitz created GROOVY-8603:
-------------------------------------
Summary: @CompileStatic: matching method check limited to 30 super
classes
Key: GROOVY-8603
URL: https://issues.apache.org/jira/browse/GROOVY-8603
Project: Groovy
Issue Type: Bug
Components: Static Type Checker
Affects Versions: 2.5.0-rc-3, 2.4.13, 2.3.11
Reporter: Peter Schmitz
There is currently a maximum hierarchical depth for childclasses when using
compile static.
The compiler only searches for method parameters that match the provided class
or up to 29 super classes. This in return means that the usable hierarchical
depth is limited 29 child classes/distance from the root.
Without CompileStatic this limit does not exists. Changing the following code
to Java works too.
This Code:
{code:java}
import groovy.transform.CompileStatic
@CompileStatic
class StaticTest {
public static int getNummer( ZClassDepth0 instance ) {
return instance.depth
}
public static void main( String[] args ) {
println getNummer( new ZClassDepth29() ) //works
println getNummer( new ZClassDepth30() ) //doesn't work
}
}
{code}
fails with the following execption:
{code:java}
Error:(13, 15) Groovyc: [Static type checking] - Cannot find matching method
StaticTest#getNummer(ZClassDepth30). Please check if the declared type is right
and if the method exists.
{code}
How the "ZClassDepth" files where generated:
{code:java}
import java.nio.file.Paths
class Generator {
public static void main( String[] args ) {
def template = { int nummer ->
return """\
public class ZClassDepth${ nummer } ${ nummer > 0 ? "extends ZClassDepth${
nummer - 1 }" : '' } {
${ nummer > 0 ? '@Override' : '' }
public int getDepth() {
return $nummer
}
}
"""
}
def path = Paths.get( '[PATH_TO_SOURCE]/src' )
101.times{ i ->
new File( path.toFile(), "ZClassDepth${i}.groovy" ).text = template( i
)
}
}
}
{code}
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