[JEXL-404] Support array-access safe navigation (x?[y])

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.3
• Fix Version/s: 3.4.0
• Assignee: Henri Biestro
• Reporter: Xu Pengcheng
• Created: 30/Aug/23 11:30
• Updated: 30/Aug/23 14:34
• Resolved: 30/Aug/23 14:34

Description

The same way the expression a?.b shortcuts evaluation and returns null if a is null, this enhancement is to have the equivalent a?['b'] return null for the same reason.

Code example:

var a = {:};
a.b; // ok
a['b'];  // ok
a?.b; // ok
a?['b']; // 3.3 - parsing error in ';' 

with new JexlBuilder().safe(false).strict(true)

 

Thanks!