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23 #ifndef INCLUDED_PMT_H
24 #define INCLUDED_PMT_H
26 #include <boost/intrusive_ptr.hpp>
27 #include <boost/shared_ptr.hpp>
28 #include <boost/any.hpp>
40 * This file defines a polymorphic type and the operations on it.
42 * It draws heavily on the idea of scheme and lisp data types.
43 * The interface parallels that in Guile 1.8, with the notable
44 * exception that these objects are transparently reference counted.
50 * \brief base class of all pmt types
55 * \brief typedef for shared pointer (transparent reference counting).
56 * See http://www.boost.org/libs/smart_ptr/smart_ptr.htm
58 typedef boost::intrusive_ptr<pmt_base> pmt_t;
60 extern void intrusive_ptr_add_ref(pmt_base*);
61 extern void intrusive_ptr_release(pmt_base*);
63 class pmt_exception : public std::logic_error
66 pmt_exception(const std::string &msg, pmt_t obj);
69 class pmt_wrong_type : public pmt_exception
72 pmt_wrong_type(const std::string &msg, pmt_t obj);
75 class pmt_out_of_range : public pmt_exception
78 pmt_out_of_range(const std::string &msg, pmt_t obj);
81 class pmt_notimplemented : public pmt_exception
84 pmt_notimplemented(const std::string &msg, pmt_t obj);
88 * ------------------------------------------------------------------------
89 * Booleans. Two constants, #t and #f.
91 * In predicates, anything that is not #f is considered true.
92 * I.e., there is a single false value, #f.
93 * ------------------------------------------------------------------------
95 extern const pmt_t PMT_T; //< \#t : boolean true constant
96 extern const pmt_t PMT_F; //< \#f : boolean false constant
98 //! Return true if obj is \#t or \#f, else return false.
99 bool pmt_is_bool(pmt_t obj);
101 //! Return false if obj is \#f, else return true.
102 bool pmt_is_true(pmt_t obj);
104 //! Return true if obj is \#f, else return true.
105 bool pmt_is_false(pmt_t obj);
107 //! Return \#f is val is false, else return \#t.
108 pmt_t pmt_from_bool(bool val);
110 //! Return true if val is PMT_T, return false when val is PMT_F,
111 // else raise wrong_type exception.
112 bool pmt_to_bool(pmt_t val);
115 * ------------------------------------------------------------------------
117 * ------------------------------------------------------------------------
120 //! Return true if obj is a symbol, else false.
121 bool pmt_is_symbol(const pmt_t& obj);
123 //! Return the symbol whose name is \p s.
124 pmt_t pmt_string_to_symbol(const std::string &s);
126 //! Alias for pmt_string_to_symbol
127 pmt_t pmt_intern(const std::string &s);
131 * If \p is a symbol, return the name of the symbol as a string.
132 * Otherwise, raise the wrong_type exception.
134 const std::string pmt_symbol_to_string(const pmt_t& sym);
137 * ------------------------------------------------------------------------
138 * Numbers: we support integer, real and complex
139 * ------------------------------------------------------------------------
142 //! Return true if obj is any kind of number, else false.
143 bool pmt_is_number(pmt_t obj);
146 * ------------------------------------------------------------------------
148 * ------------------------------------------------------------------------
151 //! Return true if \p x is an integer number, else false
152 bool pmt_is_integer(pmt_t x);
154 //! Return the pmt value that represents the integer \p x.
155 pmt_t pmt_from_long(long x);
158 * \brief Convert pmt to long if possible.
160 * When \p x represents an exact integer that fits in a long,
161 * return that integer. Else raise an exception, either wrong_type
162 * when x is not an exact integer, or out_of_range when it doesn't fit.
164 long pmt_to_long(pmt_t x);
167 * ------------------------------------------------------------------------
169 * ------------------------------------------------------------------------
173 * \brief Return true if \p obj is a real number, else false.
175 bool pmt_is_real(pmt_t obj);
177 //! Return the pmt value that represents double \p x.
178 pmt_t pmt_from_double(double x);
181 * \brief Convert pmt to double if possible.
183 * Returns the number closest to \p val that is representable
184 * as a double. The argument \p val must be a real or integer, otherwise
185 * a wrong_type exception is raised.
187 double pmt_to_double(pmt_t x);
190 * ------------------------------------------------------------------------
192 * ------------------------------------------------------------------------
196 * \brief return true if \p obj is a complex number, false otherwise.
198 bool pmt_is_complex(pmt_t obj);
200 //! Return a complex number constructed of the given real and imaginary parts.
201 pmt_t pmt_make_rectangular(double re, double im);
204 * If \p z is complex, real or integer, return the closest complex<double>.
205 * Otherwise, raise the wrong_type exception.
207 std::complex<double> pmt_to_complex(pmt_t z);
210 * ------------------------------------------------------------------------
212 * ------------------------------------------------------------------------
215 extern const pmt_t PMT_NIL; //< the empty list
217 //! Return true if \p x is the empty list, otherwise return false.
218 bool pmt_is_null(const pmt_t& x);
220 //! Return true if \p obj is a pair, else false.
221 bool pmt_is_pair(const pmt_t& obj);
223 //! Return a newly allocated pair whose car is \p x and whose cdr is \p y.
224 pmt_t pmt_cons(const pmt_t& x, const pmt_t& y);
226 //! If \p pair is a pair, return the car of the \p pair, otherwise raise wrong_type.
227 pmt_t pmt_car(const pmt_t& pair);
229 //! If \p pair is a pair, return the cdr of the \p pair, otherwise raise wrong_type.
230 pmt_t pmt_cdr(const pmt_t& pair);
232 //! Stores \p value in the car field of \p pair.
233 void pmt_set_car(pmt_t pair, pmt_t value);
235 //! Stores \p value in the cdr field of \p pair.
236 void pmt_set_cdr(pmt_t pair, pmt_t value);
238 pmt_t pmt_caar(pmt_t pair);
239 pmt_t pmt_cadr(pmt_t pair);
240 pmt_t pmt_cdar(pmt_t pair);
241 pmt_t pmt_cddr(pmt_t pair);
242 pmt_t pmt_caddr(pmt_t pair);
243 pmt_t pmt_cadddr(pmt_t pair);
246 * ------------------------------------------------------------------------
249 * Store a fixed number of objects. Tuples are not modifiable, and thus
250 * are excellent for use as messages. Indexing is zero based.
251 * Access time to an element is O(1).
252 * ------------------------------------------------------------------------
255 //! Return true if \p x is a tuple, othewise false.
256 bool pmt_is_tuple(pmt_t x);
258 pmt_t pmt_make_tuple();
259 pmt_t pmt_make_tuple(const pmt_t &e0);
260 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1);
261 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2);
262 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2, const pmt_t &e3);
263 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2, const pmt_t &e3, const pmt_t &e4);
264 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2, const pmt_t &e3, const pmt_t &e4, const pmt_t &e5);
265 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2, const pmt_t &e3, const pmt_t &e4, const pmt_t &e5, const pmt_t &e6);
266 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2, const pmt_t &e3, const pmt_t &e4, const pmt_t &e5, const pmt_t &e6, const pmt_t &e7);
267 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2, const pmt_t &e3, const pmt_t &e4, const pmt_t &e5, const pmt_t &e6, const pmt_t &e7, const pmt_t &e8);
268 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2, const pmt_t &e3, const pmt_t &e4, const pmt_t &e5, const pmt_t &e6, const pmt_t &e7, const pmt_t &e8, const pmt_t &e9);
271 * If \p x is a vector or proper list, return a tuple containing the elements of x
273 pmt_t pmt_to_tuple(const pmt_t &x);
276 * Return the contents of position \p k of \p tuple.
277 * \p k must be a valid index of \p tuple.
279 pmt_t pmt_tuple_ref(const pmt_t &tuple, size_t k);
282 * ------------------------------------------------------------------------
285 * These vectors can hold any kind of objects. Indexing is zero based.
286 * ------------------------------------------------------------------------
289 //! Return true if \p x is a vector, othewise false.
290 bool pmt_is_vector(pmt_t x);
292 //! Make a vector of length \p k, with initial values set to \p fill
293 pmt_t pmt_make_vector(size_t k, pmt_t fill);
296 * Return the contents of position \p k of \p vector.
297 * \p k must be a valid index of \p vector.
299 pmt_t pmt_vector_ref(pmt_t vector, size_t k);
301 //! Store \p obj in position \p k.
302 void pmt_vector_set(pmt_t vector, size_t k, pmt_t obj);
304 //! Store \p fill in every position of \p vector
305 void pmt_vector_fill(pmt_t vector, pmt_t fill);
309 * ------------------------------------------------------------------------
310 * Uniform Numeric Vectors
312 * A uniform numeric vector is a vector whose elements are all of single
313 * numeric type. pmt offers uniform numeric vectors for signed and
314 * unsigned 8-bit, 16-bit, 32-bit, and 64-bit integers, two sizes of
315 * floating point values, and complex floating-point numbers of these
316 * two sizes. Indexing is zero based.
318 * The names of the functions include these tags in their names:
320 * u8 unsigned 8-bit integers
321 * s8 signed 8-bit integers
322 * u16 unsigned 16-bit integers
323 * s16 signed 16-bit integers
324 * u32 unsigned 32-bit integers
325 * s32 signed 32-bit integers
326 * u64 unsigned 64-bit integers
327 * s64 signed 64-bit integers
328 * f32 the C++ type float
329 * f64 the C++ type double
330 * c32 the C++ type complex<float>
331 * c64 the C++ type complex<double>
332 * ------------------------------------------------------------------------
336 //! true if \p x is any kind of uniform numeric vector
337 bool pmt_is_uniform_vector(pmt_t x);
339 bool pmt_is_u8vector(pmt_t x);
340 bool pmt_is_s8vector(pmt_t x);
341 bool pmt_is_u16vector(pmt_t x);
342 bool pmt_is_s16vector(pmt_t x);
343 bool pmt_is_u32vector(pmt_t x);
344 bool pmt_is_s32vector(pmt_t x);
345 bool pmt_is_u64vector(pmt_t x);
346 bool pmt_is_s64vector(pmt_t x);
347 bool pmt_is_f32vector(pmt_t x);
348 bool pmt_is_f64vector(pmt_t x);
349 bool pmt_is_c32vector(pmt_t x);
350 bool pmt_is_c64vector(pmt_t x);
352 pmt_t pmt_make_u8vector(size_t k, uint8_t fill);
353 pmt_t pmt_make_s8vector(size_t k, int8_t fill);
354 pmt_t pmt_make_u16vector(size_t k, uint16_t fill);
355 pmt_t pmt_make_s16vector(size_t k, int16_t fill);
356 pmt_t pmt_make_u32vector(size_t k, uint32_t fill);
357 pmt_t pmt_make_s32vector(size_t k, int32_t fill);
358 pmt_t pmt_make_u64vector(size_t k, uint64_t fill);
359 pmt_t pmt_make_s64vector(size_t k, int64_t fill);
360 pmt_t pmt_make_f32vector(size_t k, float fill);
361 pmt_t pmt_make_f64vector(size_t k, double fill);
362 pmt_t pmt_make_c32vector(size_t k, std::complex<float> fill);
363 pmt_t pmt_make_c64vector(size_t k, std::complex<double> fill);
365 pmt_t pmt_init_u8vector(size_t k, const uint8_t *data);
366 pmt_t pmt_init_s8vector(size_t k, const int8_t *data);
367 pmt_t pmt_init_u16vector(size_t k, const uint16_t *data);
368 pmt_t pmt_init_s16vector(size_t k, const int16_t *data);
369 pmt_t pmt_init_u32vector(size_t k, const uint32_t *data);
370 pmt_t pmt_init_s32vector(size_t k, const int32_t *data);
371 pmt_t pmt_init_u64vector(size_t k, const uint64_t *data);
372 pmt_t pmt_init_s64vector(size_t k, const int64_t *data);
373 pmt_t pmt_init_f32vector(size_t k, const float *data);
374 pmt_t pmt_init_f64vector(size_t k, const double *data);
375 pmt_t pmt_init_c32vector(size_t k, const std::complex<float> *data);
376 pmt_t pmt_init_c64vector(size_t k, const std::complex<double> *data);
378 uint8_t pmt_u8vector_ref(pmt_t v, size_t k);
379 int8_t pmt_s8vector_ref(pmt_t v, size_t k);
380 uint16_t pmt_u16vector_ref(pmt_t v, size_t k);
381 int16_t pmt_s16vector_ref(pmt_t v, size_t k);
382 uint32_t pmt_u32vector_ref(pmt_t v, size_t k);
383 int32_t pmt_s32vector_ref(pmt_t v, size_t k);
384 uint64_t pmt_u64vector_ref(pmt_t v, size_t k);
385 int64_t pmt_s64vector_ref(pmt_t v, size_t k);
386 float pmt_f32vector_ref(pmt_t v, size_t k);
387 double pmt_f64vector_ref(pmt_t v, size_t k);
388 std::complex<float> pmt_c32vector_ref(pmt_t v, size_t k);
389 std::complex<double> pmt_c64vector_ref(pmt_t v, size_t k);
391 void pmt_u8vector_set(pmt_t v, size_t k, uint8_t x); //< v[k] = x
392 void pmt_s8vector_set(pmt_t v, size_t k, int8_t x);
393 void pmt_u16vector_set(pmt_t v, size_t k, uint16_t x);
394 void pmt_s16vector_set(pmt_t v, size_t k, int16_t x);
395 void pmt_u32vector_set(pmt_t v, size_t k, uint32_t x);
396 void pmt_s32vector_set(pmt_t v, size_t k, int32_t x);
397 void pmt_u64vector_set(pmt_t v, size_t k, uint64_t x);
398 void pmt_s64vector_set(pmt_t v, size_t k, int64_t x);
399 void pmt_f32vector_set(pmt_t v, size_t k, float x);
400 void pmt_f64vector_set(pmt_t v, size_t k, double x);
401 void pmt_c32vector_set(pmt_t v, size_t k, std::complex<float> x);
402 void pmt_c64vector_set(pmt_t v, size_t k, std::complex<double> x);
404 // Return const pointers to the elements
406 const void *pmt_uniform_vector_elements(pmt_t v, size_t &len); //< works with any; len is in bytes
408 const uint8_t *pmt_u8vector_elements(pmt_t v, size_t &len); //< len is in elements
409 const int8_t *pmt_s8vector_elements(pmt_t v, size_t &len); //< len is in elements
410 const uint16_t *pmt_u16vector_elements(pmt_t v, size_t &len); //< len is in elements
411 const int16_t *pmt_s16vector_elements(pmt_t v, size_t &len); //< len is in elements
412 const uint32_t *pmt_u32vector_elements(pmt_t v, size_t &len); //< len is in elements
413 const int32_t *pmt_s32vector_elements(pmt_t v, size_t &len); //< len is in elements
414 const uint64_t *pmt_u64vector_elements(pmt_t v, size_t &len); //< len is in elements
415 const int64_t *pmt_s64vector_elements(pmt_t v, size_t &len); //< len is in elements
416 const float *pmt_f32vector_elements(pmt_t v, size_t &len); //< len is in elements
417 const double *pmt_f64vector_elements(pmt_t v, size_t &len); //< len is in elements
418 const std::complex<float> *pmt_c32vector_elements(pmt_t v, size_t &len); //< len is in elements
419 const std::complex<double> *pmt_c64vector_elements(pmt_t v, size_t &len); //< len is in elements
421 // Return non-const pointers to the elements
423 void *pmt_uniform_vector_writable_elements(pmt_t v, size_t &len); //< works with any; len is in bytes
425 uint8_t *pmt_u8vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
426 int8_t *pmt_s8vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
427 uint16_t *pmt_u16vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
428 int16_t *pmt_s16vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
429 uint32_t *pmt_u32vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
430 int32_t *pmt_s32vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
431 uint64_t *pmt_u64vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
432 int64_t *pmt_s64vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
433 float *pmt_f32vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
434 double *pmt_f64vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
435 std::complex<float> *pmt_c32vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
436 std::complex<double> *pmt_c64vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
439 * ------------------------------------------------------------------------
440 * Dictionary (a.k.a associative array, hash, map)
441 * ------------------------------------------------------------------------
444 //! Return true if \p obj is a dictionary
445 bool pmt_is_dict(pmt_t obj);
447 //! make an empty dictionary
448 pmt_t pmt_make_dict();
450 //! dict[key] = value
451 void pmt_dict_set(pmt_t dict, pmt_t key, pmt_t value);
453 //! Return true if \p key exists in \p dict
454 bool pmt_dict_has_key(pmt_t dict, pmt_t key);
456 //! If \p key exists in \p dict, return associated value; otherwise return \p not_found.
457 pmt_t pmt_dict_ref(pmt_t dict, pmt_t key, pmt_t not_found);
459 //! Return list of (key . value) pairs
460 pmt_t pmt_dict_items(pmt_t dict);
462 //! Return list of keys
463 pmt_t pmt_dict_keys(pmt_t dict);
465 //! Return list of values
466 pmt_t pmt_dict_values(pmt_t dict);
469 * ------------------------------------------------------------------------
470 * Any (wraps boost::any -- can be used to wrap pretty much anything)
472 * Cannot be serialized or used across process boundaries.
473 * See http://www.boost.org/doc/html/any.html
474 * ------------------------------------------------------------------------
477 //! Return true if \p obj is an any
478 bool pmt_is_any(pmt_t obj);
481 pmt_t pmt_make_any(const boost::any &any);
483 //! Return underlying boost::any
484 boost::any pmt_any_ref(pmt_t obj);
486 //! Store \p any in \p obj
487 void pmt_any_set(pmt_t obj, const boost::any &any);
491 * ------------------------------------------------------------------------
492 * msg_accepter -- pmt representation of gruel::msg_accepter
493 * ------------------------------------------------------------------------
495 //! Return true if \p obj is a msg_accepter
496 bool pmt_is_msg_accepter(const pmt_t &obj);
498 //! make a msg_accepter
499 pmt_t pmt_make_msg_accepter(boost::shared_ptr<gruel::msg_accepter> ma);
501 //! Return underlying msg_accepter
502 boost::shared_ptr<gruel::msg_accepter> pmt_msg_accepter_ref(const pmt_t &obj);
505 * ------------------------------------------------------------------------
507 * ------------------------------------------------------------------------
510 //! Return true if x and y are the same object; otherwise return false.
511 bool pmt_eq(const pmt_t& x, const pmt_t& y);
514 * \brief Return true if x and y should normally be regarded as the same object, else false.
517 * eqv returns true if:
518 * x and y are the same object.
519 * x and y are both \#t or both \#f.
520 * x and y are both symbols and their names are the same.
521 * x and y are both numbers, and are numerically equal.
522 * x and y are both the empty list (nil).
523 * x and y are pairs or vectors that denote same location in store.
526 bool pmt_eqv(const pmt_t& x, const pmt_t& y);
529 * pmt_equal recursively compares the contents of pairs and vectors,
530 * applying pmt_eqv on other objects such as numbers and symbols.
531 * pmt_equal may fail to terminate if its arguments are circular data
534 bool pmt_equal(const pmt_t& x, const pmt_t& y);
537 //! Return the number of elements in v
538 size_t pmt_length(const pmt_t& v);
541 * \brief Find the first pair in \p alist whose car field is \p obj
542 * and return that pair.
544 * \p alist (for "association list") must be a list of pairs. If no pair
545 * in \p alist has \p obj as its car then \#f is returned.
546 * Uses pmt_eq to compare \p obj with car fields of the pairs in \p alist.
548 pmt_t pmt_assq(pmt_t obj, pmt_t alist);
551 * \brief Find the first pair in \p alist whose car field is \p obj
552 * and return that pair.
554 * \p alist (for "association list") must be a list of pairs. If no pair
555 * in \p alist has \p obj as its car then \#f is returned.
556 * Uses pmt_eqv to compare \p obj with car fields of the pairs in \p alist.
558 pmt_t pmt_assv(pmt_t obj, pmt_t alist);
561 * \brief Find the first pair in \p alist whose car field is \p obj
562 * and return that pair.
564 * \p alist (for "association list") must be a list of pairs. If no pair
565 * in \p alist has \p obj as its car then \#f is returned.
566 * Uses pmt_equal to compare \p obj with car fields of the pairs in \p alist.
568 pmt_t pmt_assoc(pmt_t obj, pmt_t alist);
571 * \brief Apply \p proc element-wise to the elements of list and returns
572 * a list of the results, in order.
574 * \p list must be a list. The dynamic order in which \p proc is
575 * applied to the elements of \p list is unspecified.
577 pmt_t pmt_map(pmt_t proc(const pmt_t&), pmt_t list);
580 * \brief reverse \p list.
582 * \p list must be a proper list.
584 pmt_t pmt_reverse(pmt_t list);
587 * \brief destructively reverse \p list.
589 * \p list must be a proper list.
591 pmt_t pmt_reverse_x(pmt_t list);
594 * \brief (acons x y a) == (cons (cons x y) a)
597 pmt_acons(pmt_t x, pmt_t y, pmt_t a)
599 return pmt_cons(pmt_cons(x, y), a);
603 * \brief locates \p nth element of \n list where the car is the 'zeroth' element.
605 pmt_t pmt_nth(size_t n, pmt_t list);
608 * \brief returns the tail of \p list that would be obtained by calling
609 * cdr \p n times in succession.
611 pmt_t pmt_nthcdr(size_t n, pmt_t list);
614 * \brief Return the first sublist of \p list whose car is \p obj.
615 * If \p obj does not occur in \p list, then \#f is returned.
616 * pmt_memq use pmt_eq to compare \p obj with the elements of \p list.
618 pmt_t pmt_memq(pmt_t obj, pmt_t list);
621 * \brief Return the first sublist of \p list whose car is \p obj.
622 * If \p obj does not occur in \p list, then \#f is returned.
623 * pmt_memv use pmt_eqv to compare \p obj with the elements of \p list.
625 pmt_t pmt_memv(pmt_t obj, pmt_t list);
628 * \brief Return the first sublist of \p list whose car is \p obj.
629 * If \p obj does not occur in \p list, then \#f is returned.
630 * pmt_member use pmt_equal to compare \p obj with the elements of \p list.
632 pmt_t pmt_member(pmt_t obj, pmt_t list);
635 * \brief Return true if every element of \p list1 appears in \p list2, and false otherwise.
636 * Comparisons are done with pmt_eqv.
638 bool pmt_subsetp(pmt_t list1, pmt_t list2);
641 * \brief Return a list of length 1 containing \p x1
643 pmt_t pmt_list1(const pmt_t& x1);
646 * \brief Return a list of length 2 containing \p x1, \p x2
648 pmt_t pmt_list2(const pmt_t& x1, const pmt_t& x2);
651 * \brief Return a list of length 3 containing \p x1, \p x2, \p x3
653 pmt_t pmt_list3(const pmt_t& x1, const pmt_t& x2, const pmt_t& x3);
656 * \brief Return a list of length 4 containing \p x1, \p x2, \p x3, \p x4
658 pmt_t pmt_list4(const pmt_t& x1, const pmt_t& x2, const pmt_t& x3, const pmt_t& x4);
661 * \brief Return a list of length 5 containing \p x1, \p x2, \p x3, \p x4, \p x5
663 pmt_t pmt_list5(const pmt_t& x1, const pmt_t& x2, const pmt_t& x3, const pmt_t& x4, const pmt_t& x5);
666 * \brief Return a list of length 6 containing \p x1, \p x2, \p x3, \p x4, \p
669 pmt_t pmt_list6(const pmt_t& x1, const pmt_t& x2, const pmt_t& x3, const pmt_t& x4, const pmt_t& x5, const pmt_t& x6);
672 * \brief Return \p list with \p item added to it.
674 pmt_t pmt_list_add(pmt_t list, const pmt_t& item);
678 * ------------------------------------------------------------------------
680 * ------------------------------------------------------------------------
682 extern const pmt_t PMT_EOF; //< The end of file object
684 //! return true if obj is the EOF object, otherwise return false.
685 bool pmt_is_eof_object(pmt_t obj);
688 * read converts external representations of pmt objects into the
689 * objects themselves. Read returns the next object parsable from
690 * the given input port, updating port to point to the first
691 * character past the end of the external representation of the
694 * If an end of file is encountered in the input before any
695 * characters are found that can begin an object, then an end of file
696 * object is returned. The port remains open, and further attempts
697 * to read will also return an end of file object. If an end of file
698 * is encountered after the beginning of an object's external
699 * representation, but the external representation is incomplete and
700 * therefore not parsable, an error is signaled.
702 pmt_t pmt_read(std::istream &port);
705 * Write a written representation of \p obj to the given \p port.
707 void pmt_write(pmt_t obj, std::ostream &port);
710 * Return a string representation of \p obj.
711 * This is the same output as would be generated by pmt_write.
713 std::string pmt_write_string(pmt_t obj);
716 std::ostream& operator<<(std::ostream &os, pmt_t obj);
720 * ------------------------------------------------------------------------
721 * portable byte stream representation
722 * ------------------------------------------------------------------------
725 * \brief Write portable byte-serial representation of \p obj to \p sink
727 bool pmt_serialize(pmt_t obj, std::streambuf &sink);
730 * \brief Create obj from portable byte-serial representation
732 pmt_t pmt_deserialize(std::streambuf &source);
735 void pmt_dump_sizeof(); // debugging
737 } /* namespace pmt */
739 #endif /* INCLUDED_PMT_H */