[DAFFODIL-2041] Parse error on if statements in expressions

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 2.1.0
• Fix Version/s: 2.3.0
• Assignee: Unassigned
• Reporter: Brandon Sloane
• Created: 28/Dec/18 15:58
• Updated: 18/May/21 14:38
• Resolved: 03/Jan/19 13:56

Description

In complex dfdl expressions, if statements do not get processed correctly without extraneus parenthesis.

The following expressions produces an error:

    { 1 + if(fn:true()) then 1 else 2 }

[error] Schema Definition Error: Unable to parse expression. Message: `}' expected but `t' found
Next: then 1 else 2 }.

In contrast, the following works as expected:

    { 1 + (if(fn:true()) then 1 else 2) }

 

Attached is a basic schema demonstrating the issue.