1 [+ AutoGen5 template .cpp +][+
2 COMMENT a part of GiNaC parser -- construct functions from a byte stream.
4 (use-modules (ice-9 format))
6 (define (sequence start end . step)
7 (let ((step (if (null? step) 1 (car step))))
9 (if (> n end) '() (cons n (loop (+ step n)))))))
11 [+ (dne " * " " * " ) +]
13 * If you want to change this file, edit either `[+ (def-file) +]' or
14 * `[+ (tpl-file) +]' file, and run the following command:
16 * autogen -T [+ (tpl-file) +] [+ (def-file) +]
18 #include "parse_context.h"
20 #include "operators.h"
26 static ex [+ (get "name") +]_reader(const exvector& ev)
28 return GiNaC::[+ (get "name") +]([+
29 (let ((nargs (if (exist? "args")
30 (string->number (get "args")) 1)))
31 (format '#f "~{ev[~a]~^, ~}" (sequence 0 (- nargs 1)))) +]);
34 // function::registered_functions() is protected, but we need to access it
35 class registered_functions_hack : public function
38 static const std::vector<function_options>& get_registered_functions()
40 return function::registered_functions();
43 registered_functions_hack();
44 registered_functions_hack(const registered_functions_hack&);
45 registered_functions_hack& operator=(const registered_functions_hack&);
48 // Encode an integer into a pointer to a function. Since functions
49 // are aligned (the minimal alignment depends on CPU architecture)
50 // we can distinguish between pointers and integers.
51 static reader_func encode_serial_as_reader_func(unsigned serial)
53 uintptr_t u = (uintptr_t)serial;
54 u = (u << 1) | (uintptr_t)1;
55 reader_func ptr = reinterpret_cast<reader_func>((void *)u);
59 const prototype_table& get_default_reader()
62 static bool initialized = false;
63 static prototype_table reader;
66 reader[make_pair("[+ (get "name") +]", [+
67 (if (exist? "args") (get "args") "1")
68 +])] = [+ (get "name") +]_reader;[+
70 std::vector<function_options>::const_iterator it =
71 registered_functions_hack::get_registered_functions().begin();
72 std::vector<function_options>::const_iterator end =
73 registered_functions_hack::get_registered_functions().end();
75 for (; it != end; ++it) {
76 prototype proto = make_pair(it->get_name(), it->get_nparams());
77 reader[proto] = encode_serial_as_reader_func(serial);