[JEXL-202] Detect invalid (addition/subtraction/etc)-assignment operator usage with non-assignable l-value during script parsing

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0
• Fix Version/s: 3.1
• Assignee: Henri Biestro
• Reporter: Dmitri Blinov
• Created: 06/Jul/16 07:12
• Updated: 29/Jun/21 06:59
• Resolved: 06/Jul/16 09:42

Description

While the code like

2 = 3

throws exception "assignment error in .." during parsing, the code like

2 += 3

is parsed successfully and only throws exception "illegal assignment form 0" in runtime which makes it harder for debug.