refactor: ensure validate_not_all_defaults is compiled

Author: MilesCranmer

src/Node.jl

@@ -218,16 +218,13 @@ include("base.jl")
     end
     return node_factory(N, T1, val, feature, op, l, r, allocator)
 end
-function validate_not_all_defaults(::Type{N}, val, feature, op, l, r, children) where {N<:AbstractExpressionNode}
-    return nothing
-end
-function validate_not_all_defaults(::Type{N}, val, feature, op, l, r, children) where {T,N<:AbstractExpressionNode{T}}
-    if val === nothing && feature === nothing && op === nothing && l === nothing && r === nothing && children === nothing
-        error(
-            "Encountered the call for $N() inside the generic constructor. "
-            * "Did you forget to define `$(Base.typename(N).wrapper){T}() where {T} = new{T}()`?"
-        )
-    end
+validate_not_all_defaults(::Type{<:AbstractExpressionNode}, val, feature, op, l, r, children) = nothing
+validate_not_all_defaults(::Type{<:AbstractExpressionNode{T}}, val, feature, op, l, r, children) where {T} = nothing
+function validate_not_all_defaults(::Type{<:AbstractExpressionNode{T}}, ::Nothing, ::Nothing, ::Nothing, ::Nothing, ::Nothing, ::Nothing) where {T}
+    error(
+        "Type setup error for $N(). "
+        * "Did you forget to define `$(Base.typename(N).wrapper){T}() where {T} = new{T}()`?"
+    )
     return nothing
 end
 """Create a constant leaf."""