}
				default {
					return -code error "Unknown type: $type"
				}
			}
			_ccode $handle "    if (!Tcl_ObjSetVar2(${interp_name}, Tcl_NewStringObj(\"${arg}\", -1), NULL, _$arg, 0)) $return_failure;"
		}
		_ccode $handle ""

		_ccode $handle ""
		# Evaluate script
		_ccode $handle "    tclrv = Tcl_Eval($interp_name, \"$cbody\");"
		_ccode $handle "    if (tclrv != TCL_OK && tclrv != TCL_RETURN) $return_failure;"
		_ccode $handle ""

		# Handle return value
		if {$rtype != "ok" && $rtype != "void"} {
			_ccode $handle "    rv_interp = Tcl_GetObjResult(${interp_name});"
		}

		switch -- $rtype {
			void { }
			ok {

				_ccode $handle "    rv = Tcl_GetString(rv_interp);"
			}
			Tcl_Obj* {
				_ccode $handle "    rv = rv_interp;"
			}
		}

		# Return value
		_ccode $handle ""
		if {$rtype != "void"} {
			_ccode $handle "    return(rv);"
		} else {
			_ccode $handle "    return;"
		}
		_ccode $handle "\}"