Replace the old Lisp-like array expression representation
(["AND", ["PARAM", ...], ...]) with a class hierarchy rooted in
an abstract Expression class (Literal, Parameter, Binary, Unary,
FunctionCall, Conditional). This gives compile-time type safety
to expression construction, evaluation, and pattern matching.
Key changes:
- New lib/common/expression.ts defines the class hierarchy with
map/evaluate/toString methods
- Rewrite parser as hand-rolled recursive descent, removing the
parsimmon dependency
- Extend Path with a colon separator to unify parameter identity
and attributes into a single address space (e.g.
"Device.WiFi.SSID.1.Name:writable"). The colon field tracks
how many trailing segments are attribute qualifiers. PathSet
rewritten with separate param/attr segment indexes
- Flatten device attribute representation in the UI to
colon-delimited keys mirroring the new path syntax
Tiny in size so we don't need to fetch the 80KB yaml package for simple
YAML serializaiton needs in various pages. It's also 8x faster than
yaml package so that's a big plus for debug logging.
Zaid Humaimidi
Shweelan Samson