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https://issues.apache.org/jira/browse/GROOVY-11410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17856356#comment-17856356
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Eric Milles edited comment on GROOVY-11410 at 6/20/24 2:09 PM:
---------------------------------------------------------------
There is an implicit conversion to Class. I think it takes the string value of
the right expression. I never quite understood why the right could be anything
besides a string. STC does present an opportunity to tighten this up.
{code:java}
public class ShortTypeHandling {
public static Class castToClass(Object object) {
if (object==null) return null;
if (object instanceof Class) return (Class) object;
try {
return Class.forName(object.toString());
} catch (Exception e) {
throw new GroovyCastException(object, Class.class, e);
}
}
{code}
was (Author: emilles):
There is an implicit conversion to Class. I think it takes the string value of
the right expression. I never quite understood why the right could be anything
besides a string. STC does present an opportunity to tighten this up.
> type mismatch when the expected type is java.lang.Class
> -------------------------------------------------------
>
> Key: GROOVY-11410
> URL: https://issues.apache.org/jira/browse/GROOVY-11410
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Thodoris Sotiropoulos
> Priority: Minor
>
> I have the following program
> {code:java}
> class Test {
> public static void main(String [] args) {
> java.lang.Class<String> lapse = 1;
> }
> } {code}
> h3. Actual behavior
> The code compiles, but I get the following runtime error:
> {code:java}
> Caught: org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot
> cast object '1' with class 'java.lang.Integer' to class 'java.lang.Class' due
> to: java.lang.ClassNotFoundException: 1
> org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast
> object '1' with class 'java.lang.Integer' to class 'java.lang.Class' due to:
> java.lang.ClassNotFoundException: 1
> at Test.main(test.groovy:3){code}
> h3. Expected behavior
> The code should have been rejected
> Tested against master (commit: e6b9133726af9cdea2bc6db7b55523cd88f7190e)
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