rishi/scryer-prolog
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61 Commits

Author SHA1 Message Date
Markus Triska
c934e06171 ADDED: New Prolog flag, answer_write_options. 
This lets us specify additional write options used by the top level
for writing answers.
 2023-09-03 10:49:07 +02:00
Markus Triska
5d3295c40c ENHANCED: use newly available read_term_from_chars/3 for better errors 
Examples, previously:

    $ scryer-prolog -g "member(X,Ls"
    ?-
    $ scryer-prolog -g "member(X,Ls)"
    member(_542,_543) causes: error(existence_error(procedure,member/2),member/2)
    ?-

Now:

    $ scryer-prolog -g "member(X,Ls"
    "member(X,Ls" cannot be read: error(syntax_error(incomplete_reduction),read_term_from_chars/3:0)
    $ scryer-prolog -g "member(X,Ls)"
    member(X,Ls) causes: error(existence_error(procedure,member/2),member/2)
    ?-

This also addresses #1185.
 2023-07-16 14:16:07 +02:00
Mark
fba7790637 remove errant debug_hook from read_and_match 2023-07-09 10:30:30 -06:00
Markus Triska
d18f128a3c correct \\ to \, addressing #1865 2023-07-09 10:29:53 -06:00
Mark
c8b9059289 refine EOF handling more (#1873) 2023-07-09 10:29:47 -06:00
Markus Triska
6525c1f543 print version more readably, addressing #1868 2023-07-08 08:19:05 +02:00
Markus Triska
3b9b9e75c4 make double_quotes write option not dependent on double_quotes flag 
This gives consistent results without depending on another flag.
 2023-07-05 21:37:11 +02:00
Mark
9cdad087ef add double_quotes write option for printing to strings, enable it at toplevel 2023-07-03 12:09:05 -06:00
Markus Triska
31030738a4 remove now unneeded check 2023-06-30 22:14:00 +02:00
Mark
caf84a259e check that F in needs_bracketing/2 is an atom 2023-06-30 13:45:45 -06:00
Markus Triska
42282c6e6e remove unneeded case: only operator definitions should count, not quoting 2023-06-30 18:03:21 +02:00
Markus Triska
a3f8ddd24a remove subsumed case: F == Value means Arity =:= 0, now considered above 2023-06-30 18:02:43 +02:00
Markus Triska
bfe808a779 shorten needs_bracketing/2 2023-06-30 18:01:54 +02:00
Markus Triska
28065b0565 constrain bracketing to operators with pertaining arity 
Example:

    ?- X = -->(a,b,c).
       X = -->(a,b,c).
 2023-06-30 18:01:17 +02:00
Markus Triska
db972de40c bracket all operators that are direct operands of (=)/2 
This addresses #804.
 2023-06-30 08:03:38 +02:00
Mark
98b0ab3409 improve call/N implementation (#1829) 2023-06-10 17:32:18 -06:00
Markus Triska
8ab1155fc5 ENHANCED: use call_residue_vars/2 to show all pending constraints 
Example:

    ?- freeze(_, false).
       freeze:freeze(_A,false).

This was originally added in 04ba9bc11a,
then reverted, and is now restored.
 2023-03-30 23:49:33 +02:00
Mark Thom
cc8bb38abc Revert "use new call_residue_vars/2 in toplevel.pl (#847)" 
This reverts commit 04ba9bc11a.
 2023-03-14 21:34:48 -06:00
Mark Thom
04ba9bc11a use new call_residue_vars/2 in toplevel.pl (#847) 2023-03-12 17:56:54 -06:00
Mark Thom
1ffbf63d20 inline metacalls 2022-10-26 23:36:07 -06:00
Markus Triska
47a6b498e3 ENHANCED: "f" on toplevel to report answers up to the next multiple of 5. 
This makes counting solutions easy.
 2022-05-21 18:20:08 +02:00
Mark Thom
8bf3d4ea71 fix tests, use '$first_answer' to print indentation before errors (#1408) 2022-04-09 20:32:52 -06:00
Mark Thom
00eab4d415 print errors as goals (#1408) 2022-04-09 14:01:48 -06:00
Mark Thom
01a9fd9e25 indent plain false (#676) 2022-04-03 20:35:11 -06:00
William Kral
5f1f07e5a1 Add --no-add-history flag 
Flag prevents the input stream from saving terms to ~/.scryer_history
when set. Use the flag when running tests to increase test isolation.
 2022-03-10 21:48:41 -08:00
Markus Triska
9f864574de ADDED: "f" to enumerate the next 5 solutions, similar to GUPU. 2022-03-02 21:05:49 +01:00
Markus Triska
102adb3544 ADDED: "a" to enumerate all solutions 
Example:

    ?- member(X, "hello").
    %@    X = h   <-- press "a"
    %@ ;  X = e
    %@ ;  X = l
    %@ ;  X = l
    %@ ;  X = o
    %@ ;  false.
 2022-03-01 23:52:51 +01:00
Markus Triska
2e57789d10 ENHANCED: Make toplevel output a Prolog term that can be read back also for "...". 
This addresses #1240.
 2022-01-28 18:47:55 +01:00
Mark Thom
97b9d488d4 include library(error) in toplevel.pl (#1226) 2022-01-17 21:53:52 -07:00
Markus Triska
6a610ac57d FIXED: toplevel to use (newly renamed) read_from_chars/2 2022-01-18 01:12:47 +01:00
Mark Thom
83378e4373 deduplicate but do not sort anonymous variables in toplevel (#1196) 2022-01-15 19:24:22 -07:00
Mark Thom
955e1799c8 flatten the instruction dispatch loop 2022-01-06 22:09:36 -07:00
Mark Thom
10bb6ab3bb restore old thread_goals to fix top-level solutions printing bug 2022-01-06 21:44:41 -07:00
Mark Thom
7507e88406 detect module resolved cut in interpreted (,) 2022-01-06 21:44:41 -07:00
Mark Thom
0404c3bd94 use new heap term representation 2022-01-06 21:44:38 -07:00
Adrián Arroyo Calle
00d0502cbd Rename init_file to disable_init_file 2021-08-23 09:53:15 +02:00
Adrián Arroyo Calle
c30bd51b91 use consult instead of use_module 2021-08-22 11:44:17 +02:00
Adrián Arroyo Calle
9391dd9d51 Rename to disable_init_file and change description 2021-08-22 11:36:27 +02:00
Adrián Arroyo Calle
3cd112b60f PR feedback 2021-08-21 17:53:20 +02:00
Adrián Arroyo Calle
dce0c43e26 Read scryerrc if goals specified but not -f specified 2021-08-20 14:15:16 +02:00
Adrián Arroyo Calle
80e228f236 Clean the code 2021-08-20 14:06:57 +02:00
Adrián Arroyo Calle
8ee2545b05 Add a -f switch to load alternative initialization files 2021-08-20 14:00:32 +02:00
Mark Thom
9002c33046 leave the expansion of incomplete goals in meta-predicates to call/N (#967, #970) 2021-05-19 14:07:46 -06:00
Mark Thom
37f2336eee stop unifying ! to free variables in control_functor/1 (#887) 2021-03-24 15:05:59 -06:00
Mark Thom
7520fe7000 use occurs check when enabled in UnifyValue (#885) 2021-03-22 22:05:03 -06:00
Mark Thom
111de1462c remove vestigial attribute goals struct field and related predicates 2021-03-21 12:06:53 -06:00
Mark Thom
1b9db035ba call project_attributes from top-level (#846) 2021-03-04 16:05:06 -07:00
Mark Thom
e8971e0d8b use atom_chars to convert .scryerrc path string to atom 2021-02-28 23:26:22 -07:00
Mark Thom
a03f00628b do not print error messages if .scryerrc[.pl] does not exist (#842) 2021-02-28 17:57:35 -07:00
Mark Thom
f935060b2b restore .scryerrc loading 2021-02-28 11:03:55 -07:00