Eric Milles created GROOVY-11137:
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Summary: Improve support for union and intersection types
Key: GROOVY-11137
URL: https://issues.apache.org/jira/browse/GROOVY-11137
Project: Groovy
Issue Type: Improvement
Reporter: Eric Milles
Union types are partially supported:
{code:groovy}
try {
foo()
} catch (Exception | Error e) {
}
{code}
But don't have direct representation or support in the AST.
Intersection types (declared with {{&}}) are not supported:
{code:groovy}
// parses as method call: (a & b).call({ ... })
var fun = (Function<String,String> & Serializable) { x -> x }
void test(Number number) {
if (number instanceof Comparable) {
number // flow type is (Number & Comparable)
}
}
{code}
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