rishi/scryer-prolog
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56efb4ffba834c09466051e01e0cafebd841768c
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362 Commits

Author SHA1 Message Date
Mark Thom
56efb4ffba change VarNames to VNNames (#476) 2020-05-10 15:54:53 -06:00
Mark Thom
540bc71873 use heap_pstr_iter in AtomChars (#482) 2020-05-10 15:46:51 -06:00
Mark Thom
26d483f2d7 place cut after infinitely expanding VarList in write_term_to_chars/3 (#476) 2020-05-10 13:30:30 -06:00
Mark Thom
dc5626f34d Merge pull request #474 from triska/radix 
ADDED: ~Nr and ~NR are now available for radix conversions
 2020-05-09 15:09:14 -03:00
Mark Thom
2717ec2759 Merge pull request #471 from triska/master 
ADDED: Initial version of library(crypto).
 2020-05-09 14:33:58 -03:00
Mark Thom
b0ae44bc25 Merge branch 'sockets-develop' 2020-05-09 14:26:29 -06:00
Mark Thom
0c94124fdf Merge branch 'master' of https://github.com/mthom/rusty-wam 2020-05-09 14:26:22 -06:00
Mark Thom
6f927b9941 add set_stream_position/2 2020-05-09 14:20:32 -06:00
Markus Triska
d75449ea63 ADDED: ~Nr and ~NR are now available for radix conversions 2020-05-09 19:19:25 +02:00
Mark Thom
034f5b16bd add at_end_of_stream/{0,1} 2020-05-09 01:38:23 -06:00
Mark Thom
5be771842f add stream_property/2 2020-05-09 00:56:17 -06:00
Markus Triska
a131c93a14 ADDED: Initial version of library(crypto). 2020-05-08 22:33:49 +02:00
notoria
47f5223c37 Enhanced shift/1 2020-05-07 19:10:21 +02:00
Mark Thom
b8c50eb0fe add peek_char/{1,2}, peek_byte/{1,2}, peek_code/{1,2} 2020-05-06 01:05:03 -06:00
Mark Thom
fe05082ddc add sockets library, use new type_error function from sockets system calls 2020-05-05 22:57:06 -06:00
Mark Thom
414acda9e0 add put_code/{1,2}, get_code/{1,2}, improve get_* predicates 2020-05-05 22:42:35 -06:00
Mark Thom
47e3a5e75a add put_byte/{1,2}, put_char/{1,2} 2020-05-05 17:42:18 -06:00
Mark Thom
573df892bc cleanup on reading predicates, add get_char/{1,2} 2020-05-05 16:54:40 -06:00
Mark Thom
bfced59949 clean up stream error handling, add get_byte/{1,2} 2020-05-05 16:09:17 -06:00
Mark Thom
53ae8b9bd1 add flush_output/{0,1}, past_end_of_stream 2020-05-05 14:10:49 -06:00
Mark Thom
ab62603c5a add close/{1,2}, better EOF action handling in read_term 2020-05-05 00:38:21 -06:00
Mark Thom
dd247cd541 adapt write_term family, add handling for EOF actions. 2020-05-04 21:17:06 -06:00
Mark Thom
0d7a9f32d6 add open/3, write_term/3 2020-05-04 14:50:26 -06:00
Mark Thom
8e9273a96a test 2020-05-04 11:18:13 -06:00
Markus Triska
2dfdaaa4ba disable goal expansion until #445 is resolved 2020-05-04 18:55:52 +02:00
Mark Thom
a49230c0e1 Merge branch 'master' into sockets-develop 2020-05-03 23:09:13 -06:00
Mark Thom
b5368207d6 merge with master 2020-05-03 18:49:15 -06:00
Markus Triska
605c233753 do not project queue/2 attributes to residual goals 2020-05-04 00:54:43 +02:00
Mark Thom
848425418b Project goals of query variables (#362) 2020-05-02 22:27:32 -06:00
Mark Thom
99f66200f7 Merge branch 'master' of https://github.com/mthom/rusty-wam 2020-05-02 18:47:53 -06:00
Mark Thom
b642bd2cfd add term_attributed_variables/2 (#422) 2020-05-02 18:46:29 -06:00
Mark Thom
c062b7c9da Merge pull request #443 from notoria/arithmetic 
Implemented expmod/4
 2020-05-02 12:00:44 -03:00
notoria
7df7901532 Implemented expmod/4 2020-05-02 14:56:07 +02:00
Mark Thom
9dabce819a remove now unnecessary dependencies, correct ordering of ! in (;)/3 2020-05-01 23:38:44 -03:00
Mark Thom
a019109857 Merge pull request #440 from notoria/arithmetic 
Enhanced number_to_rational/2 and number_to_rational/3
 2020-05-01 21:48:55 -03:00
Mark Thom
fd5ff20b68 Merge branch 'master' of https://github.com/mthom/rusty-wam 2020-05-01 21:40:45 -06:00
Mark Thom
81f9666e82 cut after compound check in (;)/2 only after semicolon_compound_selector succeeds 2020-05-01 21:40:36 -06:00
Mark Thom
aa8659d5c7 insert cuts where needed into (;)/3 (#434) 2020-05-01 18:52:01 -06:00
notoria
9df2df0f9f Enhanced number_to_rational/2 and number_to_rational/3 2020-05-02 02:36:23 +02:00
Markus Triska
ec6d725587 use ℤ 
This is now possible thanks to the great contribution by @matt2xu.

Many thanks!
 2020-05-02 00:06:16 +02:00
Markus Triska
ca5a5b4392 correct overeager CLP(ℤ) goal expansion 
For instance, consider:

    t(X) :- X #= 1.

We *cannot* expand this to:

    ?- listing(t/1).
    t(A) :-
       (  integer(A) ->
          A=:=A
       ;  (  var(A) ->
             true
          ;  true,
             clpz:clpz_equal(A,A)
          )
       ).

Also, a new binding *must not* be dragged outside of disjunctions,
since the code may look for example like this:

        i(X) :-
            (   X #= 3
            ;   X #= 4
            ).

This commit fixes such issues, and still rewrites CLP(ℤ) expressions
as far as possible already at compilation time.

For example:

    n(X) :- X #= 1+3.

This is now compiled to (note that 1+3 is evaluated to 4):

    ?- listing(n/1).
    n(A) :-
       (  integer(A) ->
          A=:=4
       ;  (  var(A) ->
             A=4
          ;  B=4,
             clpz:clpz_equal(A,B)
          )
       ).

Ideally, it should be compiled to:

    n(4).
 2020-05-01 18:29:00 +02:00
Markus Triska
1dbadbfc35 enable goal expansion for CLP(ℤ) goals 
Example:

    integer_successor(I0, I) :- I #= I0 + 1.

Yielding:

    ?- listing(integer_successor/2).
    integer_successor(A,B) :-
       (  integer(B) ->
          (  integer(A) ->
             B=:=A+1
          ;  C is B,
             clpz:clpz_equal(C,A+1)
          )
       ;  (  integer(A) ->
             (  var(B) ->
                B is A+1
             ;  C is A+1,
                clpz:clpz_equal(B,C)
             )
          ;  clpz:clpz_equal(B,A+1)
          )
       ).

Thus, fast low-level arithmetic is used whenever possible.
 2020-04-30 23:09:15 +02:00
Markus Triska
a39f4b4487 correct verify_attributes/3 for variables that have no CLP(ℤ) attribute attached (#373) 
Example:

    ?- freeze(B, queen_value_truth(C,N,B)), Q #= N #<==> B.
       clpz:(Q#=N#<==>B), clpz:(B in 0..1), freeze:freeze(B,queen_value_truth(C,N,B))
    ;  false.
 2020-04-30 18:10:09 +02:00
Mark Thom
e0e52a3090 fix 'drain lower bound was too large', store user-level expansions to modules (#416) 2020-04-30 00:01:00 -06:00
Mark Thom
ff5b870a9f Merge pull request #417 from notoria/mediants 
Implemented predicate mediants/2 with Stern-Brocot tree
 2020-04-29 18:33:35 -03:00
notoria
a371580201 Add rational_numerator_denominator/3, number_to_rational/2 and renamed stern_brocot/3 to number_to_rational/3 2020-04-29 23:30:14 +02:00
notoria
f7b49740c1 Removed predicate mediants/2 and added stern_brocot/3 2020-04-29 14:18:20 +02:00
Mark Thom
7e765fe726 correct answer substitution order, equating variables to themselves (#326) 2020-04-29 01:45:42 -06:00
notoria
1d339f74d1 Implemented predicate mediants/2 with Stern-Brocot tree 2020-04-29 02:44:13 +02:00
Markus Triska
4ea0dee90a use new nth0/3 from library(lists) 2020-04-28 17:59:49 +02:00