Move SymbolicUtils.jl into extension

Author: MilesCranmer

Project.toml

@@ -19,6 +19,9 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 [weakdeps]
 SymbolicUtils = "d1185830-fcd6-423d-90d6-eec64667417b"
 
+[extensions]
+DynamicExpressionsSymbolicUtilsExt = "SymbolicUtils"
+
 [compat]
 Compat = "3.37, 4"
 LoopVectorization = "0.12"

src/InterfaceSymbolicUtils.jl ext/DynamicExpressionsSymbolicUtilsExt.jlsrc/InterfaceSymbolicUtils.jl renamed to ext/DynamicExpressionsSymbolicUtilsExt.jl

@@ -1,9 +1,13 @@
-module InterfaceSymbolicUtilsModule
-
 using SymbolicUtils
-import ..EquationModule: Node, DEFAULT_NODE_TYPE
-import ..OperatorEnumModule: AbstractOperatorEnum
-import ..UtilsModule: isgood, isbad, @return_on_false
+if isdefined(Base, :get_extension)
+    import ..DynamicExpressions.EquationModule: Node, DEFAULT_NODE_TYPE
+    import ..DynamicExpressions.OperatorEnumModule: AbstractOperatorEnum
+    import ..DynamicExpressions.UtilsModule: isgood, isbad, @return_on_false
+else
+    import .EquationModule: Node, DEFAULT_NODE_TYPE
+    import .OperatorEnumModule: AbstractOperatorEnum
+    import .UtilsModule: isgood, isbad, @return_on_false
+end
 
 const SYMBOLIC_UTILS_TYPES = Union{<:Number,SymbolicUtils.Symbolic{<:Number}}
 
@@ -254,5 +258,3 @@ function multiply_powers(
         return cumulator, true
     end
 end
-
-end

src/DynamicExpressions.jl

@@ -10,7 +10,9 @@ include("EvaluationHelpers.jl")
 include("SimplifyEquation.jl")
 include("OperatorEnumConstruction.jl")
 
-using Requires
+if !isdefined(Base, :get_extension)
+    using Requires
+end
 using Reexport
 @reexport import .EquationModule:
     Node, string_tree, print_tree, copy_node, set_node!, tree_mapreduce, filter_map
@@ -34,9 +36,11 @@ using Reexport
 @reexport import .EvaluationHelpersModule
 
 function __init__()
-    @require SymbolicUtils = "d1185830-fcd6-423d-90d6-eec64667417b" @eval begin
-        include("InterfaceSymbolicUtils.jl")
-        @reexport import .InterfaceSymbolicUtilsModule: node_to_symbolic, symbolic_to_node
+    @static if !isdefined(Base, :get_extension)
+        @require SymbolicUtils = "d1185830-fcd6-423d-90d6-eec64667417b" begin
+            include("../ext/DynamicExpressionsSymbolicUtilsExt.jl")
+            export node_to_symbolic, symbolic_to_node
+        end
     end
 end