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23 #ifndef INCLUDED_PMT_H
24 #define INCLUDED_PMT_H
26 #include <boost/shared_ptr.hpp>
27 #include <boost/any.hpp>
35 * This file defines a polymorphic type and the operations on it.
37 * It draws heavily on the idea of scheme and lisp data types.
38 * The interface parallels that in Guile 1.8, with the notable
39 * exception that these objects are transparently reference counted.
45 * \brief base class of all pmt types
50 * \brief typedef for shared pointer (transparent reference counting).
51 * See http://www.boost.org/libs/smart_ptr/smart_ptr.htm
53 typedef boost::shared_ptr<pmt_base> pmt_t;
56 class pmt_exception : public std::logic_error
59 pmt_exception(const std::string &msg, pmt_t obj);
62 class pmt_wrong_type : public pmt_exception
65 pmt_wrong_type(const std::string &msg, pmt_t obj);
68 class pmt_out_of_range : public pmt_exception
71 pmt_out_of_range(const std::string &msg, pmt_t obj);
74 class pmt_notimplemented : public pmt_exception
77 pmt_notimplemented(const std::string &msg, pmt_t obj);
81 * ------------------------------------------------------------------------
82 * Booleans. Two constants, #t and #f.
84 * In predicates, anything that is not #f is considered true.
85 * I.e., there is a single false value, #f.
86 * ------------------------------------------------------------------------
88 extern const pmt_t PMT_T; //< \#t : boolean true constant
89 extern const pmt_t PMT_F; //< \#f : boolean false constant
91 //! Return true if obj is \#t or \#f, else return false.
92 bool pmt_is_bool(pmt_t obj);
94 //! Return false if obj is \#f, else return true.
95 bool pmt_is_true(pmt_t obj);
97 //! Return true if obj is \#f, else return true.
98 bool pmt_is_false(pmt_t obj);
100 //! Return \#f is val is false, else return \#t.
101 pmt_t pmt_from_bool(bool val);
103 //! Return true if val is PMT_T, return false when val is PMT_F,
104 // else raise wrong_type exception.
105 bool pmt_to_bool(pmt_t val);
108 * ------------------------------------------------------------------------
110 * ------------------------------------------------------------------------
113 //! Return true if obj is a symbol, else false.
114 bool pmt_is_symbol(const pmt_t& obj);
116 //! Return the symbol whose name is \p s.
117 pmt_t pmt_string_to_symbol(const std::string &s);
119 //! Alias for pmt_string_to_symbol
120 pmt_t pmt_intern(const std::string &s);
124 * If \p is a symbol, return the name of the symbol as a string.
125 * Otherwise, raise the wrong_type exception.
127 const std::string pmt_symbol_to_string(const pmt_t& sym);
130 * ------------------------------------------------------------------------
131 * Numbers: we support integer, real and complex
132 * ------------------------------------------------------------------------
135 //! Return true if obj is any kind of number, else false.
136 bool pmt_is_number(pmt_t obj);
139 * ------------------------------------------------------------------------
141 * ------------------------------------------------------------------------
144 //! Return true if \p x is an integer number, else false
145 bool pmt_is_integer(pmt_t x);
147 //! Return the pmt value that represents the integer \p x.
148 pmt_t pmt_from_long(long x);
151 * \brief Convert pmt to long if possible.
153 * When \p x represents an exact integer that fits in a long,
154 * return that integer. Else raise an exception, either wrong_type
155 * when x is not an exact integer, or out_of_range when it doesn't fit.
157 long pmt_to_long(pmt_t x);
160 * ------------------------------------------------------------------------
162 * ------------------------------------------------------------------------
166 * \brief Return true if \p obj is a real number, else false.
168 bool pmt_is_real(pmt_t obj);
170 //! Return the pmt value that represents double \p x.
171 pmt_t pmt_from_double(double x);
174 * \brief Convert pmt to double if possible.
176 * Returns the number closest to \p val that is representable
177 * as a double. The argument \p val must be a real or integer, otherwise
178 * a wrong_type exception is raised.
180 double pmt_to_double(pmt_t x);
183 * ------------------------------------------------------------------------
185 * ------------------------------------------------------------------------
189 * \brief return true if \p obj is a complex number, false otherwise.
191 bool pmt_is_complex(pmt_t obj);
193 //! Return a complex number constructed of the given real and imaginary parts.
194 pmt_t pmt_make_rectangular(double re, double im);
197 * If \p z is complex, real or integer, return the closest complex<double>.
198 * Otherwise, raise the wrong_type exception.
200 std::complex<double> pmt_to_complex(pmt_t z);
203 * ------------------------------------------------------------------------
205 * ------------------------------------------------------------------------
208 extern const pmt_t PMT_NIL; //< the empty list
210 //! Return true if \p x is the empty list, otherwise return false.
211 bool pmt_is_null(const pmt_t& x);
213 //! Return true if \p obj is a pair, else false.
214 bool pmt_is_pair(const pmt_t& obj);
216 //! Return a newly allocated pair whose car is \p x and whose cdr is \p y.
217 pmt_t pmt_cons(const pmt_t& x, const pmt_t& y);
219 //! If \p pair is a pair, return the car of the \p pair, otherwise raise wrong_type.
220 pmt_t pmt_car(const pmt_t& pair);
222 //! If \p pair is a pair, return the cdr of the \p pair, otherwise raise wrong_type.
223 pmt_t pmt_cdr(const pmt_t& pair);
225 //! Stores \p value in the car field of \p pair.
226 void pmt_set_car(pmt_t pair, pmt_t value);
228 //! Stores \p value in the cdr field of \p pair.
229 void pmt_set_cdr(pmt_t pair, pmt_t value);
231 pmt_t pmt_caar(pmt_t pair);
232 pmt_t pmt_cadr(pmt_t pair);
233 pmt_t pmt_cdar(pmt_t pair);
234 pmt_t pmt_cddr(pmt_t pair);
235 pmt_t pmt_caddr(pmt_t pair);
236 pmt_t pmt_cadddr(pmt_t pair);
239 * ------------------------------------------------------------------------
242 * Store a fixed number of objects. Tuples are not modifiable, and thus
243 * are excellent for use as messages. Indexing is zero based.
244 * Access time to an element is O(1).
245 * ------------------------------------------------------------------------
248 //! Return true if \p x is a tuple, othewise false.
249 bool pmt_is_tuple(pmt_t x);
251 pmt_t pmt_make_tuple();
252 pmt_t pmt_make_tuple(const pmt_t &e0);
253 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1);
254 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2);
255 pmt_t pmt_make_tuple(const pmt_t &e0, const pmt_t &e1, const pmt_t &e2, const pmt_t &e3);
256 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);
257 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);
258 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);
259 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);
260 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);
261 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);
264 * If \p x is a vector or proper list, return a tuple containing the elements of x
266 pmt_t pmt_to_tuple(const pmt_t &x);
269 * Return the contents of position \p k of \p tuple.
270 * \p k must be a valid index of \p tuple.
272 pmt_t pmt_tuple_ref(const pmt_t &tuple, size_t k);
275 * ------------------------------------------------------------------------
278 * These vectors can hold any kind of objects. Indexing is zero based.
279 * ------------------------------------------------------------------------
282 //! Return true if \p x is a vector, othewise false.
283 bool pmt_is_vector(pmt_t x);
285 //! Make a vector of length \p k, with initial values set to \p fill
286 pmt_t pmt_make_vector(size_t k, pmt_t fill);
289 * Return the contents of position \p k of \p vector.
290 * \p k must be a valid index of \p vector.
292 pmt_t pmt_vector_ref(pmt_t vector, size_t k);
294 //! Store \p obj in position \p k.
295 void pmt_vector_set(pmt_t vector, size_t k, pmt_t obj);
297 //! Store \p fill in every position of \p vector
298 void pmt_vector_fill(pmt_t vector, pmt_t fill);
302 * ------------------------------------------------------------------------
303 * Uniform Numeric Vectors
305 * A uniform numeric vector is a vector whose elements are all of single
306 * numeric type. pmt offers uniform numeric vectors for signed and
307 * unsigned 8-bit, 16-bit, 32-bit, and 64-bit integers, two sizes of
308 * floating point values, and complex floating-point numbers of these
309 * two sizes. Indexing is zero based.
311 * The names of the functions include these tags in their names:
313 * u8 unsigned 8-bit integers
314 * s8 signed 8-bit integers
315 * u16 unsigned 16-bit integers
316 * s16 signed 16-bit integers
317 * u32 unsigned 32-bit integers
318 * s32 signed 32-bit integers
319 * u64 unsigned 64-bit integers
320 * s64 signed 64-bit integers
321 * f32 the C++ type float
322 * f64 the C++ type double
323 * c32 the C++ type complex<float>
324 * c64 the C++ type complex<double>
325 * ------------------------------------------------------------------------
329 //! true if \p x is any kind of uniform numeric vector
330 bool pmt_is_uniform_vector(pmt_t x);
332 bool pmt_is_u8vector(pmt_t x);
333 bool pmt_is_s8vector(pmt_t x);
334 bool pmt_is_u16vector(pmt_t x);
335 bool pmt_is_s16vector(pmt_t x);
336 bool pmt_is_u32vector(pmt_t x);
337 bool pmt_is_s32vector(pmt_t x);
338 bool pmt_is_u64vector(pmt_t x);
339 bool pmt_is_s64vector(pmt_t x);
340 bool pmt_is_f32vector(pmt_t x);
341 bool pmt_is_f64vector(pmt_t x);
342 bool pmt_is_c32vector(pmt_t x);
343 bool pmt_is_c64vector(pmt_t x);
345 pmt_t pmt_make_u8vector(size_t k, uint8_t fill);
346 pmt_t pmt_make_s8vector(size_t k, int8_t fill);
347 pmt_t pmt_make_u16vector(size_t k, uint16_t fill);
348 pmt_t pmt_make_s16vector(size_t k, int16_t fill);
349 pmt_t pmt_make_u32vector(size_t k, uint32_t fill);
350 pmt_t pmt_make_s32vector(size_t k, int32_t fill);
351 pmt_t pmt_make_u64vector(size_t k, uint64_t fill);
352 pmt_t pmt_make_s64vector(size_t k, int64_t fill);
353 pmt_t pmt_make_f32vector(size_t k, float fill);
354 pmt_t pmt_make_f64vector(size_t k, double fill);
355 pmt_t pmt_make_c32vector(size_t k, std::complex<float> fill);
356 pmt_t pmt_make_c64vector(size_t k, std::complex<double> fill);
358 pmt_t pmt_init_u8vector(size_t k, const uint8_t *data);
359 pmt_t pmt_init_s8vector(size_t k, const int8_t *data);
360 pmt_t pmt_init_u16vector(size_t k, const uint16_t *data);
361 pmt_t pmt_init_s16vector(size_t k, const int16_t *data);
362 pmt_t pmt_init_u32vector(size_t k, const uint32_t *data);
363 pmt_t pmt_init_s32vector(size_t k, const int32_t *data);
364 pmt_t pmt_init_u64vector(size_t k, const uint64_t *data);
365 pmt_t pmt_init_s64vector(size_t k, const int64_t *data);
366 pmt_t pmt_init_f32vector(size_t k, const float *data);
367 pmt_t pmt_init_f64vector(size_t k, const double *data);
368 pmt_t pmt_init_c32vector(size_t k, const std::complex<float> *data);
369 pmt_t pmt_init_c64vector(size_t k, const std::complex<double> *data);
371 uint8_t pmt_u8vector_ref(pmt_t v, size_t k);
372 int8_t pmt_s8vector_ref(pmt_t v, size_t k);
373 uint16_t pmt_u16vector_ref(pmt_t v, size_t k);
374 int16_t pmt_s16vector_ref(pmt_t v, size_t k);
375 uint32_t pmt_u32vector_ref(pmt_t v, size_t k);
376 int32_t pmt_s32vector_ref(pmt_t v, size_t k);
377 uint64_t pmt_u64vector_ref(pmt_t v, size_t k);
378 int64_t pmt_s64vector_ref(pmt_t v, size_t k);
379 float pmt_f32vector_ref(pmt_t v, size_t k);
380 double pmt_f64vector_ref(pmt_t v, size_t k);
381 std::complex<float> pmt_c32vector_ref(pmt_t v, size_t k);
382 std::complex<double> pmt_c64vector_ref(pmt_t v, size_t k);
384 void pmt_u8vector_set(pmt_t v, size_t k, uint8_t x); //< v[k] = x
385 void pmt_s8vector_set(pmt_t v, size_t k, int8_t x);
386 void pmt_u16vector_set(pmt_t v, size_t k, uint16_t x);
387 void pmt_s16vector_set(pmt_t v, size_t k, int16_t x);
388 void pmt_u32vector_set(pmt_t v, size_t k, uint32_t x);
389 void pmt_s32vector_set(pmt_t v, size_t k, int32_t x);
390 void pmt_u64vector_set(pmt_t v, size_t k, uint64_t x);
391 void pmt_s64vector_set(pmt_t v, size_t k, int64_t x);
392 void pmt_f32vector_set(pmt_t v, size_t k, float x);
393 void pmt_f64vector_set(pmt_t v, size_t k, double x);
394 void pmt_c32vector_set(pmt_t v, size_t k, std::complex<float> x);
395 void pmt_c64vector_set(pmt_t v, size_t k, std::complex<double> x);
397 // Return const pointers to the elements
399 const void *pmt_uniform_vector_elements(pmt_t v, size_t &len); //< works with any; len is in bytes
401 const uint8_t *pmt_u8vector_elements(pmt_t v, size_t &len); //< len is in elements
402 const int8_t *pmt_s8vector_elements(pmt_t v, size_t &len); //< len is in elements
403 const uint16_t *pmt_u16vector_elements(pmt_t v, size_t &len); //< len is in elements
404 const int16_t *pmt_s16vector_elements(pmt_t v, size_t &len); //< len is in elements
405 const uint32_t *pmt_u32vector_elements(pmt_t v, size_t &len); //< len is in elements
406 const int32_t *pmt_s32vector_elements(pmt_t v, size_t &len); //< len is in elements
407 const uint64_t *pmt_u64vector_elements(pmt_t v, size_t &len); //< len is in elements
408 const int64_t *pmt_s64vector_elements(pmt_t v, size_t &len); //< len is in elements
409 const float *pmt_f32vector_elements(pmt_t v, size_t &len); //< len is in elements
410 const double *pmt_f64vector_elements(pmt_t v, size_t &len); //< len is in elements
411 const std::complex<float> *pmt_c32vector_elements(pmt_t v, size_t &len); //< len is in elements
412 const std::complex<double> *pmt_c64vector_elements(pmt_t v, size_t &len); //< len is in elements
414 // Return non-const pointers to the elements
416 void *pmt_uniform_vector_writable_elements(pmt_t v, size_t &len); //< works with any; len is in bytes
418 uint8_t *pmt_u8vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
419 int8_t *pmt_s8vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
420 uint16_t *pmt_u16vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
421 int16_t *pmt_s16vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
422 uint32_t *pmt_u32vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
423 int32_t *pmt_s32vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
424 uint64_t *pmt_u64vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
425 int64_t *pmt_s64vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
426 float *pmt_f32vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
427 double *pmt_f64vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
428 std::complex<float> *pmt_c32vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
429 std::complex<double> *pmt_c64vector_writable_elements(pmt_t v, size_t &len); //< len is in elements
432 * ------------------------------------------------------------------------
433 * Dictionary (a.k.a associative array, hash, map)
434 * ------------------------------------------------------------------------
437 //! Return true if \p obj is a dictionary
438 bool pmt_is_dict(pmt_t obj);
440 //! make an empty dictionary
441 pmt_t pmt_make_dict();
443 //! dict[key] = value
444 void pmt_dict_set(pmt_t dict, pmt_t key, pmt_t value);
446 //! Return true if \p key exists in \p dict
447 bool pmt_dict_has_key(pmt_t dict, pmt_t key);
449 //! If \p key exists in \p dict, return associated value; otherwise return \p not_found.
450 pmt_t pmt_dict_ref(pmt_t dict, pmt_t key, pmt_t not_found);
452 //! Return list of (key . value) pairs
453 pmt_t pmt_dict_items(pmt_t dict);
455 //! Return list of keys
456 pmt_t pmt_dict_keys(pmt_t dict);
458 //! Return list of values
459 pmt_t pmt_dict_values(pmt_t dict);
462 * ------------------------------------------------------------------------
463 * Any (wraps boost::any -- can be used to wrap pretty much anything)
465 * Cannot be serialized or used across process boundaries.
466 * See http://www.boost.org/doc/html/any.html
467 * ------------------------------------------------------------------------
470 //! Return true if \p obj is an any
471 bool pmt_is_any(pmt_t obj);
474 pmt_t pmt_make_any(const boost::any &any);
476 //! Return underlying boost::any
477 boost::any pmt_any_ref(pmt_t obj);
479 //! Store \p any in \p obj
480 void pmt_any_set(pmt_t obj, const boost::any &any);
484 * ------------------------------------------------------------------------
486 * ------------------------------------------------------------------------
489 //! Return true if x and y are the same object; otherwise return false.
490 bool pmt_eq(const pmt_t& x, const pmt_t& y);
493 * \brief Return true if x and y should normally be regarded as the same object, else false.
496 * eqv returns true if:
497 * x and y are the same object.
498 * x and y are both \#t or both \#f.
499 * x and y are both symbols and their names are the same.
500 * x and y are both numbers, and are numerically equal.
501 * x and y are both the empty list (nil).
502 * x and y are pairs or vectors that denote same location in store.
505 bool pmt_eqv(const pmt_t& x, const pmt_t& y);
508 * pmt_equal recursively compares the contents of pairs and vectors,
509 * applying pmt_eqv on other objects such as numbers and symbols.
510 * pmt_equal may fail to terminate if its arguments are circular data
513 bool pmt_equal(const pmt_t& x, const pmt_t& y);
516 //! Return the number of elements in v
517 size_t pmt_length(const pmt_t& v);
520 * \brief Find the first pair in \p alist whose car field is \p obj
521 * and return that pair.
523 * \p alist (for "association list") must be a list of pairs. If no pair
524 * in \p alist has \p obj as its car then \#f is returned.
525 * Uses pmt_eq to compare \p obj with car fields of the pairs in \p alist.
527 pmt_t pmt_assq(pmt_t obj, pmt_t alist);
530 * \brief Find the first pair in \p alist whose car field is \p obj
531 * and return that pair.
533 * \p alist (for "association list") must be a list of pairs. If no pair
534 * in \p alist has \p obj as its car then \#f is returned.
535 * Uses pmt_eqv to compare \p obj with car fields of the pairs in \p alist.
537 pmt_t pmt_assv(pmt_t obj, pmt_t alist);
540 * \brief Find the first pair in \p alist whose car field is \p obj
541 * and return that pair.
543 * \p alist (for "association list") must be a list of pairs. If no pair
544 * in \p alist has \p obj as its car then \#f is returned.
545 * Uses pmt_equal to compare \p obj with car fields of the pairs in \p alist.
547 pmt_t pmt_assoc(pmt_t obj, pmt_t alist);
550 * \brief Apply \p proc element-wise to the elements of list and returns
551 * a list of the results, in order.
553 * \p list must be a list. The dynamic order in which \p proc is
554 * applied to the elements of \p list is unspecified.
556 pmt_t pmt_map(pmt_t proc(const pmt_t&), pmt_t list);
559 * \brief reverse \p list.
561 * \p list must be a proper list.
563 pmt_t pmt_reverse(pmt_t list);
566 * \brief destructively reverse \p list.
568 * \p list must be a proper list.
570 pmt_t pmt_reverse_x(pmt_t list);
573 * \brief (acons x y a) == (cons (cons x y) a)
576 pmt_acons(pmt_t x, pmt_t y, pmt_t a)
578 return pmt_cons(pmt_cons(x, y), a);
582 * \brief locates \p nth element of \n list where the car is the 'zeroth' element.
584 pmt_t pmt_nth(size_t n, pmt_t list);
587 * \brief returns the tail of \p list that would be obtained by calling
588 * cdr \p n times in succession.
590 pmt_t pmt_nthcdr(size_t n, pmt_t list);
593 * \brief Return the first sublist of \p list whose car is \p obj.
594 * If \p obj does not occur in \p list, then \#f is returned.
595 * pmt_memq use pmt_eq to compare \p obj with the elements of \p list.
597 pmt_t pmt_memq(pmt_t obj, pmt_t list);
600 * \brief Return the first sublist of \p list whose car is \p obj.
601 * If \p obj does not occur in \p list, then \#f is returned.
602 * pmt_memv use pmt_eqv to compare \p obj with the elements of \p list.
604 pmt_t pmt_memv(pmt_t obj, pmt_t list);
607 * \brief Return the first sublist of \p list whose car is \p obj.
608 * If \p obj does not occur in \p list, then \#f is returned.
609 * pmt_member use pmt_equal to compare \p obj with the elements of \p list.
611 pmt_t pmt_member(pmt_t obj, pmt_t list);
614 * \brief Return true if every element of \p list1 appears in \p list2, and false otherwise.
615 * Comparisons are done with pmt_eqv.
617 bool pmt_subsetp(pmt_t list1, pmt_t list2);
620 * \brief Return a list of length 1 containing \p x1
622 pmt_t pmt_list1(const pmt_t& x1);
625 * \brief Return a list of length 2 containing \p x1, \p x2
627 pmt_t pmt_list2(const pmt_t& x1, const pmt_t& x2);
630 * \brief Return a list of length 3 containing \p x1, \p x2, \p x3
632 pmt_t pmt_list3(const pmt_t& x1, const pmt_t& x2, const pmt_t& x3);
635 * \brief Return a list of length 4 containing \p x1, \p x2, \p x3, \p x4
637 pmt_t pmt_list4(const pmt_t& x1, const pmt_t& x2, const pmt_t& x3, const pmt_t& x4);
640 * \brief Return a list of length 5 containing \p x1, \p x2, \p x3, \p x4, \p x5
642 pmt_t pmt_list5(const pmt_t& x1, const pmt_t& x2, const pmt_t& x3, const pmt_t& x4, const pmt_t& x5);
645 * \brief Return a list of length 6 containing \p x1, \p x2, \p x3, \p x4, \p
648 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);
651 * \brief Return \p list with \p item added to it.
653 pmt_t pmt_list_add(pmt_t list, const pmt_t& item);
657 * ------------------------------------------------------------------------
659 * ------------------------------------------------------------------------
661 extern const pmt_t PMT_EOF; //< The end of file object
663 //! return true if obj is the EOF object, otherwise return false.
664 bool pmt_is_eof_object(pmt_t obj);
667 * read converts external representations of pmt objects into the
668 * objects themselves. Read returns the next object parsable from
669 * the given input port, updating port to point to the first
670 * character past the end of the external representation of the
673 * If an end of file is encountered in the input before any
674 * characters are found that can begin an object, then an end of file
675 * object is returned. The port remains open, and further attempts
676 * to read will also return an end of file object. If an end of file
677 * is encountered after the beginning of an object's external
678 * representation, but the external representation is incomplete and
679 * therefore not parsable, an error is signaled.
681 pmt_t pmt_read(std::istream &port);
684 * Write a written representation of \p obj to the given \p port.
686 void pmt_write(pmt_t obj, std::ostream &port);
689 * Return a string representation of \p obj.
690 * This is the same output as would be generated by pmt_write.
692 std::string pmt_write_string(pmt_t obj);
695 std::ostream& operator<<(std::ostream &os, pmt_t obj);
699 * ------------------------------------------------------------------------
700 * portable byte stream representation
701 * ------------------------------------------------------------------------
704 * \brief Write portable byte-serial representation of \p obj to \p sink
706 bool pmt_serialize(pmt_t obj, std::streambuf &sink);
709 * \brief Create obj from portable byte-serial representation
711 pmt_t pmt_deserialize(std::streambuf &source);
714 void pmt_dump_sizeof(); // debugging
716 } /* namespace pmt */
718 #endif /* INCLUDED_PMT_H */