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Posted to notifications@groovy.apache.org by "Alexey Afanasiev (JIRA)" <ji...@apache.org> on 2017/02/08 10:07:41 UTC
[jira] [Created] (GROOVY-8084) Captured types doesn't work in
@CompileStatic
Alexey Afanasiev created GROOVY-8084:
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Summary: Captured types doesn't work in @CompileStatic
Key: GROOVY-8084
URL: https://issues.apache.org/jira/browse/GROOVY-8084
Project: Groovy
Issue Type: Bug
Components: Static compilation, Static Type Checker
Affects Versions: 2.4.8
Reporter: Alexey Afanasiev
This code could be successfully compiled and executed.
{code}
@CompileStatic
static def method(List<? extends Serializable> captured) {
captured.add('some string')
return captured
}
println method(new ArrayList<Integer>())
{code}
Looks like type check in groovy doesn't work with captured types. Is it a bug?
Is there any documentation about generics in groovy?
P.S.:
Another kind of strange behaviour:
{code}
@CompileStatic
static def method() {
List<Integer> list = new ArrayList<>()
List<? extends Serializable> captured = list
captured.add('some string') //Error:(7, 5) Groovyc: [Static type checking] - Cannot call java.util.ArrayList <java.lang.Integer>#add(java.lang.Integer) with arguments [java.lang.String]
return captured
}
{code}
Somehow type checking infered type of 'captured' variable to java.util.ArrayList <java.lang.Integer>
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