[GROOVY-8606] Provide friendly error message for invalid lambda body

• Type: Improvement
• Status: Reopened
• Priority: Major
• Resolution: Unresolved
• Component/s: parser-antlr4
• Assignee: Unassigned
• Reporter: Daniel Sun
• Created: 25/May/18 10:01
• Updated: 25/Nov/19 23:53

Description

We should provide friendly error message like "Statements should be wrapped in a block, e.g. () ->

{ some statements here }", e.g.

Script1.groovy: 1: Statements should be wrapped in a block, e.g. () -> { some statements here }

@ line 1, column 15.
def a = () -> assert 1 == 1
^