Remove dead code

Author: YingboMa

src/systems/abstractsystem.jl

@@ -663,20 +663,6 @@ function SymbolicIndexingInterface.is_param_sym(sys::AbstractSystem, sym)
     !isnothing(SymbolicIndexingInterface.param_sym_to_index(sys, sym))
 end
 
-struct AbstractSysToExpr
-    sys::AbstractSystem
-    states::Vector
-end
-AbstractSysToExpr(sys) = AbstractSysToExpr(sys, states(sys))
-function (f::AbstractSysToExpr)(O)
-    !istree(O) && return toexpr(O)
-    any(isequal(O), f.states) && return nameof(operation(O))  # variables
-    if issym(operation(O))
-        return build_expr(:call, Any[nameof(operation(O)); f.(arguments(O))])
-    end
-    return build_expr(:call, Any[operation(O); f.(arguments(O))])
-end
-
 ###
 ### System utils
 ###

src/systems/jumps/jumpsystem.jl

@@ -181,7 +181,6 @@ function generate_rate_function(js::JumpSystem, rate)
     end
     rf = build_function(rate, states(js), parameters(js),
         get_iv(js),
-        conv = states_to_sym(states(js)),
         expression = Val{true})
 end
 

src/systems/optimization/optimizationsystem.jl

@@ -124,7 +124,7 @@ function generate_gradient(sys::OptimizationSystem, vs = states(sys), ps = param
     grad = calculate_gradient(sys)
     pre = get_preprocess_constants(grad)
     return build_function(grad, vs, ps; postprocess_fbody = pre,
-        conv = AbstractSysToExpr(sys), kwargs...)
+        kwargs...)
 end
 
 function calculate_hessian(sys::OptimizationSystem)
@@ -140,14 +140,14 @@ function generate_hessian(sys::OptimizationSystem, vs = states(sys), ps = parame
     end
     pre = get_preprocess_constants(hess)
     return build_function(hess, vs, ps; postprocess_fbody = pre,
-        conv = AbstractSysToExpr(sys), kwargs...)
+        kwargs...)
 end
 
 function generate_function(sys::OptimizationSystem, vs = states(sys), ps = parameters(sys);
     kwargs...)
     eqs = subs_constants(objective(sys))
     return build_function(eqs, vs, ps;
-        conv = AbstractSysToExpr(sys), kwargs...)
+        kwargs...)
 end
 
 function namespace_objective(sys::AbstractSystem)

src/utils.jl

@@ -50,30 +50,6 @@ end
 
 @deprecate substitute_expr!(expr, s) substitute(expr, s)
 
-function states_to_sym(states::Set)
-    function _states_to_sym(O)
-        if O isa Equation
-            Expr(:(=), _states_to_sym(O.lhs), _states_to_sym(O.rhs))
-        elseif istree(O)
-            op = operation(O)
-            args = arguments(O)
-            if issym(op)
-                O in states && return tosymbol(O)
-                # dependent variables
-                return build_expr(:call, Any[nameof(op); _states_to_sym.(args)])
-            else
-                canonical, O = canonicalexpr(O)
-                return canonical ? O : build_expr(:call, Any[op; _states_to_sym.(args)])
-            end
-        elseif O isa Num
-            return _states_to_sym(value(O))
-        else
-            return toexpr(O)
-        end
-    end
-end
-states_to_sym(states) = states_to_sym(Set(states))
-
 function todict(d)
     eltype(d) <: Pair || throw(ArgumentError("The variable-value mapping must be a Dict."))
     d isa Dict ? d : Dict(d)