[Bug]: IFCINTEGER(0) is parsed as null when inside a list

[andy-wrks]

What happened?

When IFCINTEGER(0) occurs inside a list in an IFC file, it results in a null value instead of the usual value object in JavaScript.

Example: all of the highlighted values in this sample file are affected by this

For example, using GetLine() on line #5212, the result looks like this:

Note: As can be seen in the first screenshot, this also affects IFCREAL(0), but not IFCREAL(0.) or IFCREAL(0.0). I'm not sure if IFCREAL(0) is an allowed spelling though, the sample file has been written manually.

I attached the sample file that only contains an IfcColumn with the Pset seen in the screenshot to reproduce this.

Note: I'm using web-ifc 0.0.66, so I apologize if this doesn't occur in 0.0.68. However, the change log didn't look like anything related to this bug has been recently changed.

Version

0.0.66

What browsers are you seeing the problem on?

Chrome

Relevant log output

See screenshot

Anything else?

Testfile_column_integer_bug.zip

[beachtom]

OK so IFCREAL(0) is not allowed so this is fine - but the INTEGER one is definetly a bug

[andy-wrks]

I wasn't sure about IFCREAL(0). What's the best source to answer such questions, is this only defined in the Step ISO norm? (which is behind a paywall I think...)