[BUG] SwtControl parsing fails: missing Base.parse method for SwitchState type

[petepritch]

Describe the bug
Parsing any DSS file containing SwtControl objects fails with a MethodError because no Base.parse method is defined for the SwitchState type. I believe the error (no method matching parse(::Type{SwitchState}, ::String) returns because rawdss2dss is not transforming the string value to SwitchState enum. I'm new to Julia so this is just a best guess.

Minimum Viable Example

using PowerModelsDistribution
parse_dss("network.dss")  # any DSS file containing SwtControl objects

With a .dss file containing:

New SwtControl.sc_s1 SwitchedObj=Line.s1 SwitchedTerm=1 Action=Close State=Closed Lock=No

Expected behavior
I would expect the switch state of the ENG model to be configured by the DssSwtcontrol object.

Screenshots
NA

System Information (please complete the following information):

• OS: windows
• PowerModelsDistribution v0.16.0
• Julia v1.12.5

Additional context
I am wondering if this can be fixed by simply adding a new Base.parse() method to the parse.jl module.

[petepritch]

Adding the following function to the parse.jl module fixes the bug and a dss file with SwtControl components are successfully parsed.

"Parses dss state property into SwitchState enum"
function Base.parse(::Type{T}, state::String)::T where T <: SwitchState
    state_lower = lowercase(state)
    if state_lower ∈ ["open", "o", "0"]
        return OPEN
    elseif state_lower ∈ ["closed", "c", "1"]
        return CLOSED
    end
    @warn "SwitchState code '$state' not recognized, defaulting to CLOSED"
    return CLOSED
end

However, I failed to realize that swtcontrol objects are not written to the ENG model. I use dss SwtControl objects to identify edges that are remotely switchable (PCR switches) then extract their open / closed state via a python OpenDSS library. I suppose I can configure the switch state in the ENG model by passing a custom function into the dss2eng_extensions argument.