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* matcher: doc fix, quasiquote examples, new test.Kaz Kylheku2021-06-042-1/+42
| | | | | | | * tests/011/patmatch.tl: New test case. * txr.1: Heading fix: Quasiquote matching notation, not quasiliteral. Examples of quasiquote notation added.
* bugfix: do not expand defun body with name in scope.Kaz Kylheku2021-06-041-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a revert of November 2016 commit 606132c336dbeb0dd8bb851a64c97f2c11b76a85. The commit claims that it fixes a bug, but in fact it introduces one. There is no discussion in that commit about what motivated it. The commit which follows that one introduces a naivey-implemented diagnostic for catching unbound functions at macro-expansion time, so the likely motivation for this wrong fix was to suppress false positives from that naive diagnostic for recursive functions. That has long since been replaced by a better approach. Because of the bug, we cannot do this very useful thing: we cannot write an inline version of a funtion as a macro first, and then a real function which just calls that macro: (defmacro foo (arg) ...) (defun foo (arg) (foo arg)) The bug causes the (foo arg) call in this function not to be expanded, due to the shadowing. * eval.c (do_expand): When expanding defun, do not introduce the function's name as a lexical function binding, because it isn't one.
* FFI: big improvement in bad call diagnosis.Kaz Kylheku2021-06-044-14/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | FFI has the problem that when things go wrong in calls, or in specifications of functions, the diagnostics refer to an internal function like ffi-call or ffi-make-call-desc, which is not helpful in identifying the error. We want the diagnostics to refer to the foreign function, or foreignb callback wrapper, to which the problem pertains. The approach taken is to stick the name symbol into the ffi-call-desc object. Functions which work with a ffi-call-desc can pull out the name and use it for reporting. * ffi.c (struct txr_ffi_call_desc): Add name member. (ffi_call_desc_print_op): Include name in printed representation. (ffi_desc_mark_op): Mark the name. (ffi_make_call_desc): Take new argument to specify the name, storing it into the structure. If it is specified,then use that name for reporting errors, otherwise stick with ffi-make-call-desc. (ffi_call_wrap, ffi_closure_dispatch, ffi_closure_dispatch_safe, ffi_make_closure): Use the name from the call descriptor, or else the function's own name if that is nil. (ffi_init): Update registration of ffi-make-call-desc intrinsic to five arguments with four required. * ffi.h (ffi_make_call_desc): Declaration updated. * share/txr/stdlib/ffi.tl (deffi, deffi-cb-expander): Pass the name symbol down to ffi-make-call-desc. * txr.1: Documented.
* lib: oversight, neglected struct literal printing.Kaz Kylheku2021-06-031-0/+3
| | | | | * lib.c (obj_print_impl): print (sys:struct-lit ...) syntax as #S(...).
* json: fix quasiquote print-read consistency issueKaz Kylheku2021-06-031-10/+24
| | | | | | | | | | | | * lib.c (out_json_rec): When printing keys that might be potentially quasiquoted symbols that look like ~abc, we must avoid the condensed {~abc:~def} style. This is because abd:~def looks like a single symbol, where abc is a package qualifier. To be safe and readable at the same time, we add spaces whenever either the key or the value are conses, indicating non-JSON syntax. Spaces are added on both sides of the colon, and also after the preceding comma, if there is a previous item.
* json: pattern matching test cases and bugfix.Kaz Kylheku2021-06-033-257/+276
| | | | | | | | | | | | | * parser.y (json_val): We must nreverse the json_pairs which were pushed in right to left order. This didn't matter for constructing hashes so it was left out, but under quasiquoting the order matters: it determines the order of evaluation and of pattern matching. * tests/011/patmatch.tl: New quasiquoting pattern matching cases, including JSON. * y.tab.c.shipped: Regenerated.
* quips: new one.Kaz Kylheku2021-06-031-0/+1
| | | | * share/txr/stdlib/quips.tl (sys:%quips%): New entry.
* json: improve escaping for script tags.Kaz Kylheku2021-06-033-14/+58
| | | | | | | | | | | * lib.c (out_json_str): Strengthen the test for escaping the forward slash. It has to occur in the sequence </script rather than just </. Recognize <!-- and --> in the string, and encode them. * tests/010/json.tl: Cover this area with some tests. * txr.1: Documented.
* matcher: better error handling for backquotes.Kaz Kylheku2021-06-022-6/+20
| | | | | | | * share/txr/stdlib/match.tl (transform-qquote): Handle hash error case with separate pattern. Use compile-error and *match form instead of error. Diagnose splicing unquote and nested quasiquote.
* matcher: quasiquote matching.Kaz Kylheku2021-06-022-10/+148
| | | | | | | | | | | | | | | | | | | | | | | This allows (when-match ^(,a ,b) '(1 2) (list a b)) -> (1 2) which is a nice alternative that is supported by some Lisp pattern matchers. We don't need it since we have (@a @b). The motivation is JSON matching. (when-match ^#J{"foo" : {"x" : ~val}} #J{"foo" : {"x" : "y"}} val) -> "y" * share/txr/stdlib/match.tl (compile-match): Recognize qquote case and handle via transform-qquote function. (non-triv-pat-p): Let's declare quasiquotes to be nontrivial. (transform-qquote): New function: transform quasi-quoted syntax into regular pattern matching syntax. * txr.1: Documented.
* json: fix two test cases for Windows.Kaz Kylheku2021-06-021-2/+5
| | | | | | | | | | | | * tests/010/json.tl: on Windows characters are limited to the BMP range 0 to #\xFFFF. The character escape \x10437 is out of range, and so throws an error, simply from that syntax being read. The two test cases which use this character are clumped into their own test form, which is executed conditionally on wide characters being more than two bytes. Because the expression is still parsed on Windows, we read the troublesome character from a string at run-time, and interpolate it.
* solaris: unbundle mkstemp and mkdtemp.Kaz Kylheku2021-06-022-5/+30
| | | | | | | | | | | | | * configure: Solaris 10 doesn't have mkdtemp, so we detect it separately from mkstemp, which Solaris 10 does have, producing HAVE_MKSTEMP and MAKE_MKDTEMP config.h symbols. * stream.c (mkdtemp_wrap): Separately surround with #if HAVE_MKDTEMP. (mkstemp_wrap): Reduce scope of #if HAVE_MKSTEMP only around this function. Bugfix here: in the #else case of #if HAVE_MKSTEMPS, we are calling the mkstemps function instead of mkstemp.
* bug: doc function not working in Windows port.Kaz Kylheku2021-06-021-1/+1
| | | | | * share/txr/stdlib/doc-lookup.tl (open-url): Handle :cygnal together with :cygwin.
* Version 261txr-261Kaz Kylheku2021-06-017-791/+892
| | | | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Bumped. * txr.vim, tl.vim: Regenerated. * protsym.c: Likewise.
* doc: rearrangement in Data Interchange SupportKaz Kylheku2021-06-011-34/+34
| | | | | * txr.1: Move the json macro description to the beginning of the section.
* doc: put-json: numbering, include U+007F.Kaz Kylheku2021-06-011-4/+4
| | | | | * txr.1: Fix duplicate 4. bullet; mention the that control character U+007F is rendered as an escape also.
* Pre-release C++ upkeep.Kaz Kylheku2021-06-012-5/+5
| | | | | | | | * stream.c (mkdtemp_wrap): Rename template argument to prefix, because template is a C++ keyword. (mkstemp_wrap): Rename local variable from template to templ. * stream.h (mkdtemp_wrap): Rename template argument.
* vim: handle more kinds of unquotes in JSON.Kaz Kylheku2021-06-011-2/+4
| | | | | | * genvim.txr (list): Add txr_junqbkt: unquoted bracket. (txr_junqlist): Support optional # for vector syntax. (txr_junqbkt): New region for unquoted bracket expressions.
* vim: improve JSON highlighting.Kaz Kylheku2021-06-011-11/+23
| | | | | | | | | | | | | | | | | | * genvim.txr (ws, jlist, jsonkw, jerr, jpunc, jesc, juesc, jnum): New variables. (txr_circ): Move down; this somehow clashes with JSON regions beginning with #, so that even if we include txr_circ in JSON regions, it doesn't work properly. (txr_jerr, txr_jpunc, txr_jesc, txr_juesc, txr_jnum): Define using variables. (txr_jkeyword): Switch to regex match instead of keyword. Vim 8.0 does not recognize keywords when they are glued to #J, as in #Jtrue, even though #J is excluded from the region. (txr_jatom): New region. (txr_jarray, txr_jhash): Define using jlist variable for contained items. (txr_jarray_in, txr_jhash_in): New regions for the inner parts without the #J.
* chr-iscntrl: recognize Unicode C0 and C1.Kaz Kylheku2021-06-012-4/+13
| | | | | | | | * lib.c (chr_iscntrl): Don't use iswcntrl; it fails to report 0x80-0x9F as control characters. A bit of hand-crafted logic does the job. * txr.1: Redocumented.
* build: improved mechanism for copying .shipped files.Kaz Kylheku2021-06-011-3/+9
| | | | | | | | | | | * Makefile (SHIPPED): New variable, holds names of files that get copied to a .shipped suffix and commited to the repo. (ABBREV3SH): New macro, version of ABBREV3 that doesn't assume it is expanding an entire recipe line, and thus can be embedded into shell commands. (%.shipped): Rule removed. (shipped): New rule that prints what it is copying. Non-maintainer version of rule errors out.
* build: produce output when copying .shipped files.Kaz Kylheku2021-06-011-0/+1
| | | | | | | | | * Makefile (%.shipped): Call the ABBREV macro to produce output when "make *.shipped" is invoked, otherwise unless VERBOSE=1 is used, it works silently. This is only in maintainer mode. The rule in regular mode has the ABBREV call. (But should we have that rule at all outside of maintainer mode?)
* sysif: utimes: internal naming cleanup.Kaz Kylheku2021-06-011-4/+4
| | | | | | | * sysif.c (wrap_utimes, wrap_lutimes): Rename static functions to utimes_wrap and lutimes_wrap, the convention used everwhere for wrappers of library functions. (sysif_init): Follow rename.
* json: turn on indentation.Kaz Kylheku2021-05-311-12/+7
| | | | | | | | * lib.c (put_json): Turn on indentation if the flat argument doesn't suppress it, and the stream is not in forced-off indentation mode. (tojson): Retarget to put_json, so we don't have to repeat this logic.
* json: wrap up: test cases, fixes, tweaks.Kaz Kylheku2021-05-315-23/+169
| | | | | | | | | | | | | | | | | | | | | * /share/txr/stdlib/getput.tl (get-jsons): If the s parameter is a string, convert it to a byte input stream so that. (put-jsons): Add missing t return value. (file-put-json, file-append-json, file-put-jsons, file-append-jsons, command-put-jsons, command-put-jsons): Add missing object argument to all these functions, and a missing "w" open-file mode to several of them. * stream.c (mkstemp_wrap): Calculate length of suff the defaulted argument, not the raw suffix argument. * test/010/json.tl: New file, providing tests that touch every area of the new JSON functionality. * tests/common.tl (mstest, with-temp-file): New macros. * txr.1: Document that get-jsons takes a source which could be a string.
* parser: gc bug in token.Kaz Kylheku2021-05-312-0/+3
| | | | | | | | | | | | | | The parser maintains some token objects for one parse job to the next in the tok_pushback and recent_tok arrays. When the recent_tok is assigned into the parser, it could be a wrong-way assignment: the parser is a gen 1 object, yet the token's semantic value of type val is a gen 0. * parser.c (lisp_parse_impl, txr_parse): Before re-enabling gc, indicate that the parser object may have been mutated by a wrong-way assignment using the mut macro. * txr.c (txr_main): Likewise.
* json: fix unquote parsing issue in quasiquotes.Kaz Kylheku2021-05-312-3304/+3428
| | | | | | | | | | | | | | | | | | | | | The big comment I added above end_of_json_unquote summarizes the issue. This issue has been uncovered by some test cases in a JSON test suite, not yet committed. * parser.l <JMARKER>: New start condition. Used as a reliable marker in the start condition stack, based on which end_of_json_quasiquote can intelligently fix-up the stack. (JSON): In the transitions to the quasiquote scanning NESTED state, push the JMARKER start condition before NESTED. (JMARKER): The lexer should never read input in the JMARKER state. If we don't put in a rule to catch this, if that ever happens, the lexer will just copy the source code to standard output. I ran into this during debugging. (end_of_json_unquote): Rewrite the start condition stack intelligently based on what the Lisp lookahead token has done to it, so parsing can smoothly continue. * lex.yy.c.shipped: Regenerated.
* json: fix circular printing.Kaz Kylheku2021-05-311-21/+34
| | | | | | | | | | | | | | | | | The recursive JSON printer must check for the circularity circularity-related conditions and emit #n= and #n# notations. * lib.c (circle_print_eligible): Function moved before out_json_rec to avoid a forward declaration. (check_emit_circle): New static function. This is a block of code for doing the circular logic, taken out of obj_print_impl, because we would like to use it in out_json_rec. (out_json_rec): Call check_emit_circle to emit any #n= or #n# notation. The function returns 1 if it has emitted #n#, in which a se we are done. (obj_print_impl): Replace moved block of code with call to check_emit_circle.
* New: mkdtemp and mkstemp functions.Kaz Kylheku2021-05-315-0/+165
| | | | | | | | | | | | | | | | * configure: check for mkstemp and mkdtemp. * stream.c (stdio_set_prop): Implement setting the :name property. We need this in mkstemp_wrap in order to punch in the temporary name, so that the application can retrieve it. (mkdtemp_wrap, mkstemp_wrap): New functions. (stream_init): Register mkdtemp and mkstemp intrinsics. * stream.h (mkdtemp_wrap, mkstemp_wrap): Declared. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* New function: tmpfile.Kaz Kylheku2021-05-314-0/+40
| | | | | | | | | | | * stream.c (tmpfile_wrap): New static function. (stream_init): Register tmpfile intrinsic. * stream.h (tmpfile_wrap): Declared. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* doc: document all json I/O convenience routines.Kaz Kylheku2021-05-302-86/+339
| | | | | | | | | * txr.1: Documented file-get-json, file-put-json, file-append-json, file-get-jsons, file-put-jsons, file-append-jsons, command-get-json, command-put-json, command-get-jsons, command-put-jsons. * share/txr/stdlib/doc-syms.tl: Updated.
* doc: put-json and put-jsonl return the object.Kaz Kylheku2021-05-301-0/+7
| | | | * txr.1: Document return value of put-json and put-jsonl.
* json: convenience I/O routines.Kaz Kylheku2021-05-302-0/+58
| | | | | | | | | | | | | | * lisplib.c (getput_set_entries): Register autoload for get-jsons, put-jsons, file-get-json, file-put-json, file-append-json, file-get-jsons, file-put-jsons, file-append-jsons, command-get-json, command-put-json, command-get-jsons and command-put-jsons. * share/txr/stdlib/getput.tl (get-jsons, put-jsons, file-get-json, file-put-json, file-append-json, file-get-jsons, file-put-jsons, file-append-jsons, command-get-json, command-put-json, command-get-jsons and command-put-jsons): New functions.
* tree: different fix for dummy node issue.Kaz Kylheku2021-05-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | Let's restore the previous commit and fix it differently. The real problem is that the tn_flatten function does not need to use the set macro. When the flattened tree is rebuilt with tn_build_tree, every left and right link of every node is set at that time. That function uses the set macro, so all is well. The dummy node is not pulled into the rebuild, so it doesn't cause any problem; the dummy node is only mutated in tn_flatten. This is a better fix not only because tn_flatten is now more efficient. It is important for the dummy node to look like it is a generation zero object. The dummy node ends up as the pseudo-root of the tree, which means that it if it looks like it is in generation 1, all generation 0 below it will be wastefully checked by the garbage collector. * tree.c (tn_flatten): Do not use the set macro. Just use straight assignment to convert the tree into a linked list. (tr_rebuild): Restore dummy node to be all zeros.
* tree: gc crash due to dummy object.Kaz Kylheku2021-05-301-1/+1
| | | | | | | | | * tree.c (tr_rebuild): The dummy on-stack node we use in the rebuilding process must have its generation field set to 1 rather than 0, so it looks like a mature heap object rather than a baby object. Otherwise when its pointer is assigned to another node which happens to be gen 1, the on-stack dummy will be added to the checkobj array, and gc will try to mark it.
* json: functions put-json and put-jsonl.Kaz Kylheku2021-05-295-26/+118
| | | | | | | | | | | | | | | | | | | | | * eval.c (eval_init): Register put-json and put-jsonl intrinsics. * lib.c (out_json_str): Do not output the U+DC01 to U+DCFF code points by masking them and using put_byte. This is unnecessary; if we just send them as-is to the text stream, the UTF-8 encoder does that for us. (put_json, put_jsonl): New functions. * lib.h (put_json, put_jsonl): Declared. * txr.1: Documented. The bulk of tojson is moved under the descriptions of these new functions, and elsewhere where the document pointed to tojson for more information, it now points to put-json. More detailed description of character treatment is given. * share/txr/stdlib/doc-syms.tl: Updated.
* json: tojson must not add #J prefix.Kaz Kylheku2021-05-292-36/+12
| | | | | | | | | | | * lib.c (out_json_rec): In the CONS case, if ctx is null bail and report and invalid object. This lets us call the function with a null context. (tojson): Do not support (json ...) syntax. Instead of obj_print, pass the object directly to out_json_rec. * txr.1: Do not mention handling json macro syntax. Common leading text factored out of bulleted paragraphs section.
* json: escape slash in </ sequenceKaz Kylheku2021-05-292-13/+36
| | | | | | | | | * lib.c (out_json_str): When the < character is seen, if the lookahead character is /, output the < and a backslash to escape the /. * txr.1: Moved description of special JSON output handling under tojson, and described the above escaping there also.
* compiler: mov into t0 bug in compiling catch formKaz Kylheku2021-05-291-6/+8
| | | | | | | | | * share/txr/stdlib/compiler.tl (compiler comp-catch): The tfrag's output register may be (t 0) in which case the maybe-mov in the cfrag code generates a mov into (t 0) which is not allowed. Instead of tfrag.oreg we create an abstrction coreg which could be either toreg or oreg and consistently use it.
* repl: syntax error diag improvement.Kaz Kylheku2021-05-291-1/+1
| | | | | | * parser.c (repl): syntax error exceptions carry some text as an argument, which we now print. This distinguishes end-of-stream syntax errors from real ones.
* parser: remove some parser access functions.Kaz Kylheku2021-05-283-38/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | * parser.c (lisp_parse_impl): Access pi->eof directly instead of going through parser_eof. We are using pi->errors in the same expression! This is the only place pi->eof is needed. (read_file_common): Don't call parser_eof. Assume that if error_val emerges, and errors is zero, it must be eof. (read_eval_ret_last): Simplify: the code actually does nothing specia for eof versus errors, so we just bail if error_var emerges. (get_parser): Function removed. (parse_errors): This is the only caller of get_parser, which now just calls gethash to fetch the parser. (parser_eof): Function removed. (parse_init): sys:get-parser, sys:parser-errors and sys:parser-eof intrinsics removed. The C function parser_errors still exists; it is used in a few places. * parser.h (get_parser, parser_eof): Declarations removed. * share/txr/stdlib/compiler.tl (compile-file-conditionally): Use the new parse-errors function instead of the removed sys:parser-errors. Since that works on the stream, we don't have to call sys:get-parser. Because it returns nil if there are no errors, we drop the > test.
* parser: provide parse-errors function.Kaz Kylheku2021-05-284-0/+58
| | | | | | | | | | * parser.c (parse_errors): New function. * parser.h (parse_errors): Declared. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* json: get-json function.Kaz Kylheku2021-05-2810-2558/+2682
| | | | | | | | | | | | | | | | | | | | | | | | | | * eval.c (eval_init): get-json intrinsic registered. * parser.c (prime_parser): Handle prime_json. (lisp_parse_impl): Take enum prime_parser argument directly instead of the interactive flag. (lisp_parse, nread, iread): Pass appropriate prime_parser value instead of the original flag. (get_json): New function. Like nread, but passes prime_json. * parser.h (enum prime_parser): New constant, prime_json. (get_json): Declared. * parser.l (prime_scanner): Handle prime_json. * parser.y (SECRET_ESCAPE_J): New terminal symbol. (spec): New productions around SECRET_ESCAPE_J for parsing JSON. * lex.yy.c.shipped, y.tab.c.shipped, y.tab.h.shipped: Updated. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* doc: fix bad deindent under copy-path-rec.Kaz Kylheku2021-05-281-0/+1
| | | | * txr.1: Add missing .IP after .RE to return the indentation.
* json: tojson function.Kaz Kylheku2021-05-285-0/+90
| | | | | | | | | | | | * eval.c (eval_init): tojson intrinsic registered. * lib.c (tojson): New function. * lib.h (tojson): Declared. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* json: two parser bugfixes.Kaz Kylheku2021-05-282-266/+268
| | | | | | | | * parser.y (json): Add forgotten call end_of_json in the '^' production. (json_val): Pass zero to vector, not 0 which is nil. * y.tab.c.shipped: Updated.
* json: indentation support for printing.Kaz Kylheku2021-05-281-5/+47
| | | | | | | | | * lib.c (out_json_rec): Save, establish and restore indentation when printing [ ] and { } notation. Enforce line breaks, and force a line break after the object if one occurred in the object. (out_json): Turn on indentation if it is off (but not if it is forced off). Restore after doing the object.
* json: printing support.Kaz Kylheku2021-05-282-0/+195
| | | | | | | | | | First cut, without line breaks or indentation. * lib.c (out_json_str, out_json_rec, out_json): New static functions. (obj_print_impl): Hook in json printing via out_json. * txr.1: Add notes about output to JSON extensions.
* json: support forgotten null object.Kaz Kylheku2021-05-283-3227/+3273
| | | | | | | | | | | | | The JSON null will map to the Lisp null symbol. I thought about using : but that could cause surprises; like when it's passed to functions as an optional argument, it will trigger the default value. * parser.l (JSON): Add rules for producing null keyword. * txr.1: Documented. * lex.yy.c.shipped: Updated.
* json: handling for bad UTF-8 bytes, NUL and \u0000.Kaz Kylheku2021-05-283-3181/+3189
| | | | | | | | | | | * parser.l <JLIT>: Convert \u+0000 sequence to U+DC00 code point, the pseudo-null. Also include JLIT in in the rule for catching bad bytes that are not matched by {UANYN}. * txr.1: Document this treatment as extensions to JSON. * lex.yy.c.shipped: Updated.
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