Eric Milles created GROOVY-9106:
-----------------------------------
Summary: @CompileStatic and @PackageScope support for inner
classes and package peers
Key: GROOVY-9106
URL: https://issues.apache.org/jira/browse/GROOVY-9106
Project: Groovy
Issue Type: Bug
Affects Versions: 2.5.6, 3.0.0-alpha-4
Reporter: Eric Milles
Follow up to GROOVY-9043. A combination of {{@CompileStatic}} and
{{@PackageScope}} has a number of variants. Not all work as expected at the
moment:
A package-private static class member should be accessible to:
- declaring class
- static inner classes
- non-static inner classes
- anonymous inner classes
- any class within the same package
- closure and lambdas enclosed by any of the above
This should include direct references as well as indirect references. Some
class {{C}} declared outside the package may extend and should not have access,
but package members should retain access to the @PS member through {{C}}.
A package-private static class member should *not* be accessible to -- should
be a STC error:
- any class in another package; this includes extends, implements, etc.
Although if declaring class is a trait...
TODO: Are the rules any different for non-static package-private members?
Except for the fact that they must be accessed from non-static scopes.
Should print "value" when compiled and executed:
{code:groovy}
import groovy.transform.*
@CompileStatic class Main {
@PackageScope static final String VALUE = 'value'
static main(args) {
print VALUE
}
}
{code}
Should print "value" when compiled and executed:
{code:groovy}
import groovy.transform.*
@CompileStatic class Main {
@PackageScope static final String VALUE = 'value'
class Inner {
void meth() { print VALUE }
}
static main(args) {
new Inner(new Main()).meth()
}
}
{code}
Should print "value" when compiled and executed:
{code:groovy}
import groovy.transform.*
@CompileStatic class Main {
@PackageScope static final String VALUE = 'value'
static class Inner { // Inner is static in this case
void meth() { print VALUE }
}
static main(args) {
new Inner(new Main()).meth()
}
}
{code}
Should print "value" when compiled and executed:
{code:groovy}
import groovy.transform.*
@CompileStatic class Main {
@PackageScope static final String VALUE = 'value'
static main(args) {
new Peer().meth()
}
}
@CompileStatic class Peer {
void meth() {
print Main.VALUE
}
}
{code}
Should print "value" when compiled and executed:
{code:groovy}
package p
import groovy.transform.*
class Main {
@PackageScope static final String VALUE = 'value'
static main(args) {
new Peer().meth()
}
}
package q
class More extends p.Main {}
package p
import groovy.transform.*
@CompileStatic class Peer {
void meth() {
print q.More.VALUE
}
}
{code}
Other should have STC error at compile time:
{code:groovy}
package p
class Main {
@groovy.transform.PackageScope static final String VALUE = 'value'
}
package q
@groovy.transform.CompileStatic
class Other extends p.Main {
static void meth() {
print VALUE
}
}
{code}
{code:java}
@Test // https://issues.apache.org/jira/browse/GROOVY-9093
public void testCompileStatic9043_subToPackage2() {
//@formatter:off
String[] sources = {
"p/Main.groovy",
"package p\n" +
"class Main {\n" +
" @groovy.transform.PackageScope static final String VALUE =
'value'\n" +
"}\n",
"q/More.groovy",
"package q\n" +
"@groovy.transform.CompileStatic\n" +
"class More extends p.Main {\n" +
" void meth() {\n" + // non-static
" print VALUE\n" +
" }\n" +
"}\n",
};
//@formatter:on
runNegativeTest(sources,
"----------\n" +
"1. ERROR in q\\More.groovy (at line 5)\n" +
"\tprint VALUE\n" +
"\t ^^^^^\n" +
"Groovy:Access to q.More#VALUE is forbidden @ line 5, column 11.\n"
+
"----------\n");
}
@Test
public void testCompileStatic9043_subToPackage3() {
//@formatter:off
String[] sources = {
"p/Main.groovy",
"package p\n" +
"class Main {\n" +
" @groovy.transform.PackageScope static final String VALUE =
'value'\n" +
"}\n",
"p/More.groovy",
"package p\n" +
"class More extends Main {}\n",
"q/Test.groovy",
"package q\n" +
"@groovy.transform.CompileStatic\n" +
"class Test {\n" +
" void meth() {\n" +
" p.More.VALUE\n" +
" }\n" +
"}\n",
};
//@formatter:on
runNegativeTest(sources,
"----------\n" +
"1. ERROR in q\\Test.groovy (at line 5)\n" +
"\tp.More.VALUE\n" +
"\t^^^^^^\n" +
"Groovy:Access to p.More#VALUE is forbidden @ line 5, column 5.\n" +
"----------\n");
}
{code}
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