(format '#f "~{ev[~a]~^, ~}" (sequence 0 (- nargs 1)))) +]);
}[+ ENDFOR +]
+// function::registered_functions() is protected, but we need to access it
+class registered_functions_hack : public function
+{
+public:
+ static const std::vector<function_options>& get_registered_functions()
+ {
+ return function::registered_functions();
+ }
+private:
+ registered_functions_hack();
+ registered_functions_hack(const registered_functions_hack&);
+ registered_functions_hack& operator=(const registered_functions_hack&);
+};
+
+// Encode an integer into a pointer to a function. Since functions
+// are aligned (the minimal alignment depends on CPU architecture)
+// we can distinguish between pointers and integers.
+static reader_func encode_serial_as_reader_func(unsigned serial)
+{
+ uintptr_t u = (uintptr_t)serial;
+ u = (u << 1) | (uintptr_t)1;
+ reader_func ptr = reinterpret_cast<reader_func>((void *)u);
+ return ptr;
+}
+
const prototype_table& get_default_reader()
{
using std::make_pair;
(if (exist? "args") (get "args") "1")
+])] = [+ (get "name") +]_reader;[+
ENDFOR +]
- try {
- for ( unsigned ser=0; ; ++ser ) {
- GiNaC::function f(ser);
- std::string name = f.get_name();
- for ( std::size_t nargs=0; ; ++nargs ) {
- try {
- function::find_function(name, nargs);
- prototype proto = std::pair<std::string, std::size_t>(name, nargs);
- std::pair<prototype_table::iterator, bool> ins = reader.insert(std::pair<prototype,reader_func>(proto, (reader_func)ser));
- if ( ins.second ) break;
- }
- catch ( std::runtime_error ) { }
- }
- }
+ std::vector<function_options>::const_iterator it =
+ registered_functions_hack::get_registered_functions().begin();
+ std::vector<function_options>::const_iterator end =
+ registered_functions_hack::get_registered_functions().end();
+ unsigned serial = 0;
+ for (; it != end; ++it) {
+ prototype proto = make_pair(it->get_name(), it->get_nparams());
+ reader[proto] = encode_serial_as_reader_func(serial);
+ ++serial;
}
- catch ( std::runtime_error ) { }
initialized = true;
}
return reader;
}
-} // namespace GiNaC
+} // namespace GiNaC