Improve launch file parsing error messages

Open timonegk opened this issue 3 years ago • 2 comments

This pull request improves the parsing error messages for launch files in two ways:

Parser errors clearly show that values are substituted and not part of the error message itself. I was recently confused by a message Attribute value of type <class 'str'> not found in Entity let, not realizing that the attribute "value" was missing and not some kind of "attribute value".
On an InvalidLaunchFileError, all parsing errors are logged.