actual fix

src/ODEexport.jl

@@ -1,3 +1,17 @@
+function __add_t(s)
+    if endswith(s, "(t)")
+        return s
+    end
+    return s * "(t)"
+end
+
+function __remove_t(s)
+    if endswith(s, "(t)")
+        return s[1:(end - 3)]
+    end
+    return s
+end
+
 """
     print_for_maple(ode, package)
 
@@ -7,16 +21,17 @@ Prints the ODE in the format accepted by maple packages
 - DifferentialThomas if package=:DifferentialThomas
 """
 function print_for_maple(ode::ODE, package = :SIAN)
-    varstr =
-        Dict(x => var_to_str(x) * "(t)" for x in vcat(ode.x_vars, ode.u_vars, ode.y_vars))
+    varstr = Dict(
+        x => (__add_t ∘ var_to_str)(x) for x in vcat(ode.x_vars, ode.u_vars, ode.y_vars)
+    )
     merge!(varstr, Dict(p => var_to_str(p) for p in ode.parameters))
     R_print, vars_print = Nemo.polynomial_ring(
         base_ring(ode.poly_ring),
         [varstr[v] for v in gens(ode.poly_ring)],
     )
-    x_names = join(map(var_to_str, ode.x_vars), ", ")
-    y_names = join(map(var_to_str, ode.y_vars), ", ")
-    u_names = join(map(var_to_str, ode.u_vars), ", ")
+    x_names = join(map(__remove_t ∘ var_to_str, ode.x_vars), ", ")
+    y_names = join(map(__remove_t ∘ var_to_str, ode.y_vars), ", ")
+    u_names = join(map(__remove_t ∘ var_to_str, ode.u_vars), ", ")
     u_string = length(u_names) > 0 ? ", [$u_names]" : ""
     ranking = "[$x_names], [$y_names] $u_string"
 
@@ -39,7 +54,7 @@ function print_for_maple(ode::ODE, package = :SIAN)
     end
 
     # Form the equations
-    function _rhs_to_str(rhs)
+    function _rhs_to_str_t(rhs)
         num, den = unpack_fraction(rhs)
         res = string(evaluate(num, vars_print))
         if den != 1
@@ -50,10 +65,10 @@ function print_for_maple(ode::ODE, package = :SIAN)
 
     eqs = []
     for (x, f) in ode.x_equations
-        push!(eqs, ("diff(" * var_to_str(x) * "(t), t)", _rhs_to_str(f)))
+        push!(eqs, ("diff(" * (__add_t ∘ var_to_str)(x) * ", t)", _rhs_to_str_t(f)))
     end
     for (y, g) in ode.y_equations
-        push!(eqs, (var_to_str(y) * "(t)", _rhs_to_str(g)))
+        push!(eqs, ((__add_t ∘ var_to_str)(y), _rhs_to_str_t(g)))
     end
     if package == :SIAN
         result *= join(map(a -> a[1] * " = " * a[2], eqs), ",\n") * "\n];\n"
@@ -78,13 +93,13 @@ end
 
 #------------------------------------------------------------------------------
 
-function _rhs_to_str(lhs)
+function _rhs_to_str_not(lhs)
     num, den = unpack_fraction(lhs)
     rslt = string(num)
     if den != 1
         rslt = "($rslt) / ($den)"
     end
-    return rslt
+    return replace(rslt, "(t)" => "")
 end
 
 """
@@ -99,7 +114,7 @@ function print_for_DAISY(ode::ODE)
     result =
         result *
         "B_:={" *
-        join(map(var_to_str, vcat(ode.u_vars, ode.y_vars, ode.x_vars)), ", ") *
+        join(map(__remove_t ∘ var_to_str, vcat(ode.u_vars, ode.y_vars, ode.x_vars)), ", ") *
         "}\$\n"
 
     result = result * "FOR EACH EL_ IN B_ DO DEPEND EL_,T\$\n\n"
@@ -114,10 +129,10 @@ function print_for_DAISY(ode::ODE)
     eqs = []
 
     for (x, f) in ode.x_equations
-        push!(eqs, "df($(var_to_str(x)), t) = " * _rhs_to_str(f))
+        push!(eqs, "df($((__remove_t ∘ var_to_str)(x)), t) = " * _rhs_to_str_not(f))
     end
     for (y, g) in ode.y_equations
-        push!(eqs, "$(var_to_str(y)) = " * _rhs_to_str(g))
+        push!(eqs, "$((__remove_t ∘ var_to_str)(y)) = " * _rhs_to_str_not(g))
     end
 
     result = result * "C_:={" * join(eqs, ",\n") * "}\$\n"
@@ -138,36 +153,41 @@ Prints the ODE in the format accepted by GenSSI 2.0 (https://github.com/genssi-d
 function print_for_GenSSI(ode::ODE)
     result = "function model = SMTH()\n"
 
-    result *= "syms " * join(var_to_str.(ode.x_vars), " ") * "\n"
+    result *= "syms " * join((__remove_t ∘ var_to_str).(ode.x_vars), " ") * "\n"
     result *= "syms " * join(var_to_str.(ode.parameters), " ") * "\n"
-    result *= "syms " * join(map(v -> var_to_str(v) * "0", ode.x_vars), " ") * "\n"
+    result *=
+        "syms " * join(map(v -> (__remove_t ∘ var_to_str)(v) * "0", ode.x_vars), " ") * "\n"
     if length(ode.u_vars) > 0
-        result *= "syms " * join(var_to_str.(ode.u_vars), " ") * "\n"
+        result *= "syms " * join((__remove_t ∘ var_to_str).(ode.u_vars), " ") * "\n"
     end
 
     result *= "model.sym.p = [" * join(var_to_str.(ode.parameters), "; ") * "; "
-    result *= join(map(v -> var_to_str(v) * "0", ode.x_vars), "; ") * "];\n"
+    result *= join(map(v -> (__remove_t ∘ var_to_str)(v) * "0", ode.x_vars), "; ") * "];\n"
 
-    result *= "model.sym.x = [" * join(var_to_str.(ode.x_vars), "; ") * "];\n"
-    result *= "model.sym.g = [" * join(var_to_str.(ode.u_vars), "; ") * "];\n"
+    result *=
+        "model.sym.x = [" * join((__remove_t ∘ var_to_str).(ode.x_vars), "; ") * "];\n"
+    result *=
+        "model.sym.g = [" * join((__remove_t ∘ var_to_str).(ode.u_vars), "; ") * "];\n"
 
     result *=
-        "model.sym.x0 = [" * join(map(v -> var_to_str(v) * "0", ode.x_vars), "; ") * "];\n"
+        "model.sym.x0 = [" *
+        join(map(v -> (__remove_t ∘ var_to_str)(v) * "0", ode.x_vars), "; ") *
+        "];\n"
 
     result *= "model.sym.xdot = ["
 
     eqs = []
     for x in ode.x_vars
         f = ode.x_equations[x]
-        push!(eqs, _rhs_to_str(f))
+        push!(eqs, _rhs_to_str_not(f))
     end
     result *= join(eqs, "\n") * "];\n"
 
     result *= "model.sym.y = ["
     eqs = []
     for y in ode.y_vars
         g = ode.y_equations[y]
-        push!(eqs, _rhs_to_str(g))
+        push!(eqs, _rhs_to_str_not(g))
     end
     result *= join(eqs, "\n") * "];\n"