[GROOVY-10984] Unexpected parser error when having fully qualified classes and constructor references

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: parser-antlr4
• Assignee: Unassigned
• Reporter: Thodoris Sotiropoulos
• Created: 27/Mar/23 08:47
• Updated: 18/May/23 07:27

Description

I have the following program

import java.util.function.Supplier;
import java.util.PriorityQueue;

class Main {
  static final void test() {
    java.util.function.Supplier<java.util.PriorityQueue<Number>> x = java.util.PriorityQueue<Number>::new; // parsing error

    Supplier<PriorityQueue<Number>> y = PriorityQueue<Number>::new; // no error
  }
}

Actual behavior

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
test.groovy: 6: Unexpected input: '>::' @ line 6, column 101.
   ava.util.PriorityQueue<Number>::new;
                                 ^

1 error

Expected behavior

Compile successfully

Tested against master (commit: dc54541306c937a81b8bb16fe4b023c2a7d8ccf2)

Issue Links

• is related to: GROOVY-10812 Expect parse error for angle brackets on left side of dot in method call
• is related to: GROOVY-9239 Java compatibility: consider supporting method reference with generics