Modul Memory

Jan Burse, erstellt 21. Nov 2018
* This module provides non-random access memory streams. A new read
* memory stream can be created via the predicate memory_read/3. A new
* write memory stream can be created via the predicate memory_write/2.
* The content of write memory stream can be retrieved via the predicate
* memory_get/2.
* Example:
* ?- memory_write([], S), write(S, foo), memory_get(S, A).
* S = 0r1479d830,
* A = foo
* ?- memory_read('foo.\n', [], S), read(S, T).
* S = 0r28100c13,
* T = foo
* The current implementation is limited in that the streams cannot
* be created with the reposition property. It is therefore not possibly
* to use the methods set_stream_position/2 or set_stream_length/2. Otherwise
* all the byte, char, term and stream operations can be applied as if they
* were file or web streams.
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:- package(library(jekdev/reference/system)).
:- use_package(foreign(jekdev/reference/system)).
:- module(memory, []).
* memory_read(T, O, S)):
* The predicate succeeds with a new read memory stream S for the
* initial data T and the open options O. For the data format and
* a listing of the open options see the API documentation.
% memory_read(+Term, +Options, -Stream)
:- public memory_read/3.
:- foreign(memory_read/3, 'ForeignMemory',
* memory_write(O, S):
* The predicate succeeds with a new write memory stream S for the
* open options O. The predicate recognizes the same open options
* as the predicate memory_read/3.
% memory_write(+Options, -Stream)
:- public memory_write/2.
:- foreign(memory_write/2, 'ForeignMemory',
* memory_get(S, T):
* The predicate succeeds with the current data T of the write
* stream S. The predicate recognizes the same data formats as
* the predicate memory_read/3.
% memory_get(+Stream, -Term)
:- public memory_get/2.
:- foreign(memory_get/2, 'ForeignMemory',