Support poorly formatted Material definitions #182
Description
LANL apparently doesn't know how to write a syntax specification. From LA-UR-17-29981 Section 3.3.2.1 a material specification shall take the form:
Mm zaid1 fraction1 zaid2 fraction2 ... [KEYWORD=value(s) ...]
Which makes sense.
Until you notice
Input Parameter Description Keyword * Value
And finally notice the asterisk:
* M card keywords may appear anywhere among the zaid-fraction pairs, but must not separate a pair.
Yep The syntax specification from before is a lie. The key-value pairs can appear anywhere they like!
Why did the developers do this? I don't know.
Is this a context-free grammar? Probably not.
However, it is officially (in the worst documented ways possible) supported, so it needs to be supported in MOntePy.