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* New functions: list-seq, ved-seq and str-seq.Kaz Kylheku2020-06-281-0/+3
| | | | | | | | | | | | | | These functions convert any iterable to a list, vector or string. * eval.c (eval_init): Registered list-seq, vec-seq and str-seq intrinsics. * lib.c (list_seq, vec_seq, str_seq): New functions. * lib.h (list_seq, vec_seq, str_seq): Declared. * txr.1: Documented.
* nullify and empty: convert to seq_info.Kaz Kylheku2020-06-051-2/+2
| | | | | | | | | | | | | | | | | Issues: (nullify 1..1) doesn't return nil as it should, and (empty 1) fails. * lib.c (seq_info): Since we would like nullify to use seq_info, seq_info cannot call nullify. Transplant the probing of the nullify method out of nullify and into here. (nullify): Obtain a seq_info_t on the object. If it's not a sequence and is not range, then just return the object. Otherwise obtain a seq_iter_t sequence and peek whether it has a next item. (empty): Similarly, obtain an iterator and peek. Definition of empty is relocated to be next to nullify. * lib.h: Relocate declaration of empty, also.
* seq_iter: support reverse iteration for ranges.Kaz Kylheku2020-06-041-1/+4
| | | | | | | | | | | | | | | | | | | | | | * lib.h (seq_iter_t): Add some union members to ui and ul for use with ranges. The purpose of this is to have separate naming for the iteration variables for ranges. * lib.c (seq_iter_get_range_cnum, seq_iter_peek_range_cnum, seq_iter_get_range_chr, seq_iter_peek_range_chr, seq_iter_get_range_bignum, seq_iter_peek_range_bignum): Use new union member names for clarity. (seq_iter_get_rev_range_cnum, seq_iter_peek_rev_range_cnum, seq_iter_get_rev_range_chr, seq_iter_peek_rev_range_chr, seq_iter_get_rev_range_bignum, seq_iter_peek_rev_range_bignum): New static functions. (seq_iter_with_init_info): Drop obj argument since the si argument has the object. Add handling for empty and reversed ranges. Also convert unbounded ranges like N..t and N..: to just N, recursively. Use new union member names. (seq_iter_init, seq_iter_init_with_rewind, iter_begin, iter_reset): Follow elimination of argument in seq_iter_init_with_info.
* Convert mapping functions to new iterators.Kaz Kylheku2020-06-031-4/+4
| | | | | | | | | | | | | | | | | * eval.c (get_iter_f): Renamed to iter_from_binding_f. (iter_begin_f, iter_more_f, iter_item_f, iter_step_f): New global variables. (op_each): Follow rename of get_iter_f. (mapcarv, mappendv, lazy_mapcar_func, lazy_mapcar, lazy_mapcarv_func, lazy_mapcarv, mapdov, prod_common): Convert from car/cdr/null-test iteration to iter-begin. (eval_init): gc-protect and initialize new variables. * lib.c (mapcar_listout, mappend, mapdo): Convert to seq_iter iteration. List argument renamed to seq. (mapcar): List argument renamed to seq. * lib.h: Declarations updated with renamed arguments.
* seq_iter: integers and ranges become iterable.Kaz Kylheku2020-06-031-1/+4
| | | | | | | | | | | | | | | | | | | | | I think with the iter-begin API, we have the the "Maxwell's Equations of Iteration". This not only works well for conses, but it extends to numbers and ranges. * lib.h (seq_iter_t): New union member ul, containing a new member lim. existing len member moved into ul union. * lib.c (seq_iter_get_vec, seq_iter_peek_vec): Adjust access of len, now wrapped in union. (seq_iter_get_range_cnum, seq_iter_peek_range_cnum, seq_iter_get_range_chr, seq_iter_peek_range_chr, seq_iter_get_range_bignum, seq_iter_peek_range_bignum, seq_iter_get_chr, seq_iter_peek_chr, seq_iter_get_num, seq_iter_peek_num): New static functions. (seq_iter_init_with_info): Support RNG object, further classifying the iteration based on the type of the from element. Support numbers and characters as iterable. (iter_begin, iter_more, iter_item, iter_step, iter_reset): Support numbers directly as unencapsulated iterators.
* New style iteration functions.Kaz Kylheku2020-06-021-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | iter-begin provides a paradigm for iteration that is more compatible with lists. If the sequence is a list, then the list itself is returned as the iterator, and the other functions are basicaly wrappers for car/cdr and null testing. Yet the API is defined in such a way that other objects can be iterated with good efficiency, at the cost of allocating a new iterator object (which can be re-used). * eval.c (eval_init): Register iter-begin, iter-more, iter-item, iter-step and iter-reset. * lib.c (seq_iter_init_with_info): New static function. (seq_iter_init): Now a thin wrapper for seq_iter_init_with_info. (iter_begin, iter_more, iter_item, iter_step, iter_reset): New functions. * lib.h (iter_begin, iter_more, iter_item, iter_step, iter_reset): New functions. * txr.1: Documented.
* Replace trivial format(nil, ...) with simpler ops.Kaz Kylheku2020-05-301-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * gencadr.txr (cadr_register): Use scat2 to glue two strings. * cadr.c: Regenerated. * lib.c (scat2, scat3): New functions. * lib.h (scat2, scat3): Declared. * liblib.c (place_instantiate, ver_instantiate, ifa_instantiate, txr_case_instantiate, with_resources_instantiate, path_test_instantiate, struct_instantiate, with_stream_instantiate, hash_instantiate, except_instantiate, type_instantiate, yield_instantiate, sock_instantiate, termios_instantiate, awk_instantiate, build_instantiate, trace_instantiate, getopts_instantiate, package_instantiate, getput_instantiate, tagbody_instantiate, pmac_instantiate, error_instantiate, keyparams_instantiate, ffi_instantiate, doloop_instantiate, stream_wrap_instantiate, asm_instantiate, compiler_instantiate, debugger_instantiate, op_instantiate, save_exe_instantiate, defset_instantiate, copy_file_instantiate): Use scat2 to glue two strings instead of format. * parser.c (find_matching_syms, hist_save, repl): Replace trivial uses of format with scat2 or scat3. * sysif.c (ensure_dir): Likewise. * txr.c (get_self_path, substitute_basename, sysroot, sysroot_init, parse_once_noerr, read_compiled_file_noerr, read_eval_stream_noerr): Likewise. * unwind.c (uw_unwind_to_exit_point): Likewise.
* quasistrings: reduce consing.Kaz Kylheku2020-05-301-0/+1
| | | | | | | | | | | | | | | | | | | Quasistrings compile to code that requires on the sys:fmt-join function to glue strings together. Rewriting that function to avoid converting its arguments from struct args * to a list. * eval.c (fmt_join): Static function removed. * lib.c (cat_str_measure, cat_str_append): more_p parameter changed to int type, which better matches the C style Boolean values it takes. (fmt_join): New external function. * lib.h: Declared. * args.h (args_more_nozap, args_get_nozap): New inline functions allowing multiple iterations over arguments without making a copy.
* search, rsearch: rewrite using seq_info and bugfix.Kaz Kylheku2020-05-251-0/+2
| | | | | | | | | | | | | | | * lib.c (seq_getpos, seq_setpos): New functions. * lib.h (seq_getpos, seq_setpos): Declared. (search_list, rsearch_list): Static functions removed. (search_common): New static function. (search, contains, rsearch): These functions are now trivial wrappers around search_common. A requirement problem is fixed in rsearch: when the key is empty, the length of sequence is returned rather than zero, because zero is obviously not the right most place where an empty key matches. * txr.1: Documentation updated.
* New assert macro.Kaz Kylheku2020-05-181-0/+1
| | | | | | | | | | | | * eval.c (rt_assert_fail, me_assert): New static functions. (eval_init): assert macro and sys:rt-assert-fail function registered. * lib.c (func_n4ov): New function. * lib.h (func_n4ov): Declared. * txr.1: Documented.
* lib: sort becomes non-destructive; nsort introduced.Kaz Kylheku2020-05-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I'm fixing a historic mistake copied from ANSI Lisp, which trips up language newcomers and sometimes even experienced users. The function innocently named sort will now return newly allocated structure. The function previously called sort will be available as nsort (non-consing/allocating sort). The shuffle function also becomes pure, and is accompanied by nshuffle. * eval (me_op): Continue to use destructive sort in this legacy code that is only triggered in very old compat mode. (eval_init): Registered nsort and nshuffle. * lib.c (nsort, nshuffle): New functions introduced, closely based on sort and shuffle. (sort, shuffle): Rewritten to avoid destructive behavior: work by copying the input and calling destructive counterparts. (sort_group): Continue to use destructive sort, which is safe; the structure is locally allocated. The sort_group function has pure semantics. (grade): Likewise. * lib.h (nsort, nshuffle): Declared. * share/txr/stdlib/getopts.tl (opthelp): Replace an instance of the (sort (copy-list ...)) pattern with just (sort ...). * tags.tl (toplevel): Continue to use destructive sort to sort tags before writing the tag file; the lifetime of the tags list ends when the file is written. * tests/010/seq.txr: Switch some sort calls to nsort to keep test case working. * txr.1: Documented.
* arith: move c_unum and unum declaration into lib.hKaz Kylheku2020-04-221-0/+2
| | | | | | | | | | | | | | | | The c_unum and unum functions are fairly often needed and and are closely related to c_num and num, which have always been declared in lib.h even though they live in arith.c. Files not doing arithmetic are including "arith.h" just for the sake of c_num or unum. * arith.h (c_unum, unum): Declarations removed. * lib.h (c_unum, unum): Declarations moved here. * chksum.c, debug.c, stream.c, strudel.c, sysif.c, vm.c: These files no longer require #include "arith.h" as a result, which is therefore removed.
* parser: eliminate struct list_accum.Kaz Kylheku2020-04-101-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | As a final round of this recent work, we observe that since the accumulator structure has been reduced to two members, we can eliminate one of them by using a cons cell as the accumulator, and threading the second value through the cdr. That is to say, the listacc grammar rule's semantic value will now be the tail cons of the list being constructed. The cdr of this cons will, temporarily, be a back pointer to the head (making the list temporarily circular). The n_exprs reduction will fix this up; it will put the correct terminating atom in place of the head (either nil, or the dotted item if there is one), and yield the head as the semantic value. * lib.h (struct list_accum): Removed. (Thus, finding a better home for this would, after all, have been a waste of time). * parser.y (lacc, splacc): Static functions removed. (union YYSTYPE): lacc membber removed. (n_exprs): Adjust to new semantic value coming from listacc. (listacc): Now of type val again. Yields pointer to tail cons as semantic value, whose cdr points to the head of the list.
* parser: move cons dot handling to higher rule.Kaz Kylheku2020-04-101-1/+0
| | | | | | | | | | | | | | * lib.h (struct list_accum): dot member removed. * parser.y (misplaced_consing_dot_check): Function removed. The misplaced consing dot diagnostic is still provided as before by yybadtoken. (n_exprs): Production for CONSDOT is moved here out of listacc. There is no $1.dot member to deal with; the dot is very simply handled here. (listacc): Remove calls to misplaced_consing_dot_check. CONSDOT production moved to n_exprs. (lacc, splacc): Remove initialization of dot member.
* parser: streamline core list building.Kaz Kylheku2020-04-091-0/+6
| | | | | | | | | | | | | | | | | | | | | The r_expr grammar symbol is replaced with listacc which has a different type: a new Yacc node type that has three fields for building a list from left to right without nreverse, and the dotted pair item. * lib.h (struct list_accum): New struct type. Not a great place for it, but we don't have a parser-specific header that is included before y.tab.h: parser.h is included after y.tab.h. * parser.y (misplaced_consing_dot_check): The val argument is just the existing dotted item; if it is other than nao, the error is generated. (lacc, splacc): New static functions. (YYSTYPE): New union member, lacc of type struct list_accum. (r_exprs): Grammar symbol removed. (listacc): New grammar symbol of type listacc. The rules are those of r_exprs upgraded to construct the list in one pass.
* warning cleanup: GNU C++ initializer warnings.Kaz Kylheku2020-04-061-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | This is the eight and final round of an effort to enable GCC's -Wextra option. The C++ compiler, with -Wextra, doesn't like C's universal struct initializer { 0 }, individually complaining about all the remaining members not being initialized. What works in C++ is the { } initializer. Conditional definition to the rescue. * lib.h (all_zero_init): New macro which expands to { } under C++, and { 0 } under C. * lib.c (make_time_impl, epoch_tm, time_string_meth, time_parse_meth): Use all_zero_init. * parser.c (prime_parser): Likewise. * socket.c (sock_mark_connected): Likewise. * sysif.c (fcntl_wrap): Likewise. * termios.c (encode_speeds, decode_speeds): Likewise. * configure (diag_flags): Add -Wextra.
* warning cleanup: remove unused parameters.Kaz Kylheku2020-04-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the second round of an effort to enable GCC's -Wextra option. All function parameters that are unused and are removable are removed. They are eliminated from the function defintions, declarations, callers, and any related function pointer variables or structure members. * arith.c (nary_simple_op): Remove unused self parameter. See lib.c: maxv, minv. * chksum.c (crc32_buf, crc32_str): Remove unused self parameter. (crc32): Don't pass self to the above functions. * eval.c (copy_env_handler, copy_bh_env_handler): Remove unused parent parameter. See unwind.c. (supplement_op_syms): Remove unused max parameter. (me_op): Don't pass max to supplement_op_syms. * lib.c (seq_iter_rewind): Remove unused self parameter. (lazy_flatten_func): Remove unused env parameter. (lazy_flatten): Use func_n1 to create non-environment-carrying funtion out of lazy_flatten_func. (maxv, minv): Don't pass self parameter to nary_simple_op. (middle_pivot): Remove unused lessfun param. (quicksort): Don't pass lessfun to middle_pivot. (diff, isec): Don't pass self to seq_iter_rewind. * lib.h (seq_iter_rewind, nary_simple_op): Declarations updated. * struct.c (get_super_slots): Remove unused self parameteer. (make_struct_type): Don't pass self to get_super_slots. * sysif.c (flock_unpack): Remove unused self parameter. (fcntl_wrap): Don't pass self to flock_unpack. * unwind.c (uw_push_cont_copy): Remove parent parameter from function pointer parameter. See eval.c: copy_env_handler. (call_copy_handlers): Remove parent parameter and don't pass that argument to the indirect call via pointer to the copy handler function. (revive_cont, capture_cont): Don't pass 0 value to removed parent parameter of call_copy_handlers. * unwind.h (struct uw_cont_copy): Function pointer member copy loses parent parameter. (uw_push_cont_copy): Declaration updated.
* New contains function: near alias of search.Kaz Kylheku2020-03-231-0/+1
| | | | | | | | | | | | Harmonizes with starts-with and ends-with. * eval.c (eval_init): Register contains intrinsic. * lib.c (contains): New function. * lib.h (contains): Delared. * txr.1: Documented.
* New type args with DARG type code.Kaz Kylheku2020-03-221-1/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | An object of args type captures into the heap the "struct args" argument list that normally appears only on the stack. Such an object also has space for a car and cdr field, which can come in handy. * args.c (dyn_args): New function: hoist a struct args * into an args heap object. * args.h (dyn_args): Declared. * gc.c (finalize, mark_obj): Handle DARGS type code. * hash.c (equal_hash): Handle DARG via eq equivalence. * lib.c (args_s): New symbol variable. (code2type): Map DARG to args symbol. (equal): Handle DARG type, using eq equivalence for now. (obj_init): Initialize args_s with interned symbol. * lib.h (enum type, type_t): New type code, DARG. (struct dyn_args): New struct. (union obj): New member, a of type struct dyn_args. * txr.1: Documented args type under typeof.
* internals: rename misnamed curry_* functions.Kaz Kyheku2020-03-171-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The various curry_xx_yy functions perform partial application, not currying. The curry prefix is being renamed to pa (partially apply). * lib.c (remq_lazy, remql_lazy, remqual_lazy, tree_Find): Updated. (do_curry_12_1, do_curry_12_1_v, do_curry_12_2, do_curry_123_1, do_curry_123_23, do_curry_123_2, do_curry_123_3, do_curry_1234_1, do_curry_1234_34): Renamed to do_pa_12_1, do_pa_12_1_v, do_pa_12_2, do_pa_123_1, do_pa_123_23, do_pa_123_2, do_pa_123_3, do_pa_1234_1, do_pa_1234_34. (curry_12_1, curry_12_1_v, curry_12_2, curry_123_1, curry_123_23, curry_123_2, curry_123_3, curry_1234_1, curry_1234_34): Renamed to pa_12_1, pa_12_1_v, pa_12_2, pa_123_1, pa_123_23, pa_123_2, pa_123_3, pa_1234_1, pa_1234_34. (transposev, do_juxt): Updated. * lib.h: Declarations renamed. * eval.c (subst_vars, qquote_init, expand_catch, weavev): Updated. * filter.c (get_filter, build_filter_from_list, filter_string_tree, filter_init): Updated. * match.c (tx_subst_vars, do_txeval, v_freeform, v_bind, v_throw, v_deffilter, v_assert, h_assert): Updated. * parser.y (gather_clause): Updated. * regex.c (regex_range_full_fun, regex_range_left_fun, regex_range_right_fun, regex_range_search_fun): Updated. * stream.c (open_files, open_files_star): Updated. * txr.c (txr_main): Updated. * unwind.c (me_defex): Updated.
* New function: assq and rassq.Kaz Kyheku2020-02-241-0/+2
| | | | | | | | | | | | | | | | | | | | | TXR Lisp is henceforth a dialect in which (cdr (assq key a-list)) works exactly as shown, without substitution of assql or assoc. * eval.c (eval_init): Register assq and rassq intrinsics. * lib.c (assq, rassq): New functions. * lib.h (assq, rassq): Declared. * txr.1: Documented. * tests/012/ashwin.tl: New file. * tests/012/ashwin.expected: New file.
* New functions: meq, meql and mequal.Kaz Kylheku2020-02-221-0/+3
| | | | | | | | | | * eval.c (eval_init): Register meq, meql an mequal intrinsics. * lib.c (meq, meql, mequal): New functions. * lib.h (meq, meql, mequal): Declared. * txr.1: Documented.
* New function: merge-delete-package.Kaz Kyheku2020-01-291-0/+1
| | | | | | | | | | | | | | | | | | | | | This is a useful function which supports the use of temporary packages over the scope of file compilation units. A file can be read under a temporary package which provides usefully customized symbol visibility consisting of an arrangement of symbols from various other packages. Then, in a single operation, thanks to this new function, that packag can be deleted and all of its local symbols (those having been newly interned over the course of the file) are transferred to some other, more permanent package. * eval.c (eval_init): merge-delete-package intrinsic registered. * lib.c (merge_delete_package): New function. * lib.h (merge_delete_package): Declared. * txr.1: Documented.
* New function: coded-length.Kaz Kylheku2020-01-181-0/+1
| | | | | | | | * eval.c (eval_init): Register coded-length intrinsic. * lib.c (coded_length): New function. * lib.h (coded_length): Declared.
* Copyright year bump 2020.Kaz Kylheku2019-12-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * LICENSE, LICENSE-CYG, METALICENSE, Makefile, alloca.h, args.c, args.h, arith.c, arith.h, buf.c, buf.h, cadr.c, cadr.h, chksum.c, chksum.h, chksums/crc32.c, chksums/crc32.h, combi.c, combi.h, configure, debug.c, debug.h, eval.c, eval.h, ffi.c, ffi.h, filter.c, filter.h, ftw.c, ftw.h, gc.c, gc.h, glob.c, glob.h, hash.c, hash.h, itypes.c, itypes.h, jmp.S, lib.c, lib.h, linenoise/linenoise.c, linenoise/linenoise.h, lisplib.c, lisplib.h, match.c, match.h, parser.c, parser.h, parser.l, parser.y, protsym.c, rand.c, rand.h, regex.c, regex.h, share/txr/stdlib/asm.tl, share/txr/stdlib/awk.tl, share/txr/stdlib/build.tl, share/txr/stdlib/cadr.tl, share/txr/stdlib/compiler.tl, share/txr/stdlib/conv.tl, share/txr/stdlib/debugger.tl, share/txr/stdlib/defset.tl, share/txr/stdlib/doloop.tl, share/txr/stdlib/error.tl, share/txr/stdlib/except.tl, share/txr/stdlib/ffi.tl, share/txr/stdlib/getopts.tl, share/txr/stdlib/getput.tl, share/txr/stdlib/hash.tl, share/txr/stdlib/ifa.tl, share/txr/stdlib/keyparams.tl, share/txr/stdlib/op.tl, share/txr/stdlib/package.tl, share/txr/stdlib/param.tl, share/txr/stdlib/path-test.tl, share/txr/stdlib/place.tl, share/txr/stdlib/pmac.tl, share/txr/stdlib/save-exe.tl, share/txr/stdlib/socket.tl, share/txr/stdlib/stream-wrap.tl, share/txr/stdlib/struct.tl, share/txr/stdlib/tagbody.tl, share/txr/stdlib/termios.tl, share/txr/stdlib/trace.tl, share/txr/stdlib/txr-case.tl, share/txr/stdlib/type.tl, share/txr/stdlib/vm-param.tl, share/txr/stdlib/with-resources.tl, share/txr/stdlib/with-stream.tl, share/txr/stdlib/yield.tl, signal.c, signal.h, socket.c, socket.h, stream.c, stream.h, struct.c, struct.h, strudel.c, strudel.h, sysif.c, sysif.h, syslog.c, syslog.h, termios.c, termios.h, tree.c, tree.h, txr.1, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h, vm.c, vm.h, vmop.h, win/cleansvg.txr: Extended copyright notices to 2020.
* Add hyperbolic functions: sinh, cosh, and others.Kaz Kylheku2019-12-071-0/+6
| | | | | | | | | | | | | | | | | | | | * arith.c (sinh_s, cosh_s, tanh_s, asinh_s, acosh_s, atanh_s): New symbol variables. (sinh, cosh, tanh, asinh, acosh, atanh): New static functions. (sineh, cosih, tangh, asineh, acosih, atangh): New functions. (arith_init): Register sinh, cosh, tanh, asinh, acosh and atanh intrinsic functions, and initialize the new symbol variables. * configure: Detect availability of hyperbolic functions in math library and defne HAVE_HYPERBOLICS as 1 in config.h accordingly. * lib.h (sineh, cosih, tangh, asineh, acosih, atangh): Declared. * txr.1: Documented new hyperbolic functions and their method counterparts that a numeric struct can implement.
* New function: identity*Kaz Kylheku2019-10-281-1/+2
| | | | | | | | | | | | | | | An version of identity with lax argument conventions. * eval.c (eval_init): Register identity* intrinsic. * lib.c (identity_star_f): New symbol variable. (identity_star): New function. (obj_init): gc-protect identity_star_f variable, and initialize it. * lib.h (identity_star_f): Declared. * txr.1: Documented.
* fixparam: signed/unsigned warning from GNU C++.Kaz Kylheku2019-10-251-1/+1
| | | | | | | * lib.h (FIXPARAM_MAX): Switch constant to signed type. * lib.c (func_vm): Use num instead of unum on FIXPARAM_MAX, since we are making it signed.
* parser: use faster, unsafe nreverse.Kaz Kylheku2019-10-251-0/+1
| | | | | | | | | | * lib.c (us_nreverse): New function. * lib.h (us_nreverse): Declared. * parser.y (clauses_opt, n_exprs, r_exprs): Use us_nreverse instead of nreverse to rorder lists built in reverse into final shape.
* functions: provide accessors for basic properties.Kaz Kylheku2019-10-181-0/+3
| | | | | | | | | | | | | | * eval.c (eval_init): Register intrinsic functions fun-fixparam-count, fun-optparam-count, fun-variadic. * lib.c (get_param_counts): New static function. (fun_fixparam_count, fun_optparam_count, fun_variadic): New functions. * lib.h (fun_fixparam_count, fun_optparam_count, fun_variadic): Declared. * txr.1: Documented.
* vm: prevent overflow of fixparam field in function.Kaz Kylheku2019-10-171-2/+5
| | | | | | | | | | | | | Functions can only have 127 fixed parameters; some code ignores this when assigning to the bitfield. * lib.h (FIXPARAM_BITS, FIXPARAM_MAX): New preprocessor symbols. (struct func): Use FIXPARAM_BITS for defining fixparam and optargs bitfields instead of hard-coded 7. * lib.c (func_vm): Sanity check the fixparam and reqags parameters: 0 <= reqargs <= fixparam <= FIXPARAM_MAX.
* New function: copy-tree.Kaz Kylheku2019-10-161-0/+1
| | | | | | | | | | * eval.c (eval_init): Register copy-tree intrinsic. * lib.c (copy_tree): New function. * lib.h (copy_tree): Declared. * txr.1: Documented.
* hash: use ucnum for hash values everywhere.Kaz Kylheku2019-10-121-1/+1
| | | | | | | | | | | | | | | | | | | One consequence of this is that we no longer pass negative values to vecref; that functon was protecting us from the consequences of this signed/unsigned mixup, at the cost of cyles. * hash.c (struct hash_ops): hash parameter in assoc_fun and acons_new_c_fun pointers changes from cnum to ucnum. (hash_assoc, hash_assql, hash_assq): hash parameter changes to ucnum. (hash_acons_new_c, hash_aconsql_new_c, hash_aconsq_new_c): Likewise. (gethash_c, gethash_e, remhash): Variable which captures the output of the hashing function is now ucnum instead of cnum. * lib.h (struct cons_hash_entry): Member hash changes from cnum to ucnum.
* safety: fix type tests that code can subvert.Kaz Kylheku2019-09-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes numerous instances of a safety hole which involves the type of a COBJ object being tested to be of a given class using logic that can be subverted by the definition of a like-named struct. Specifically logic like (typeof(obj) == hash_s) is broken, because if a struct type called hash is defined, then the test will yield true for instances of that struct type. Those instances can then be passed into code that only works on COBJ hashes, and relies on this test to reject invalid objects. * ffi.c (make_carray): Replace fragile test with strong one, using new cobjclassp function. * hash.c (hashp): Likewise. * lib.c (class_check): The expression used here for the type test moves into the new function cobjclassp and so is replaced by a call to that function. (cobjclassp): New function. * lib.h (cobjclassp): Declared. * rand.c (random_state_p): Replace fragile test using cobjclassp. * regex.c (char_set_compile): Replace fragile typeof tests for character type with is_chr. (reg_derivative, regexp): Replace fragile test with cobjclassp. * struct.c (struct_type_p): Replace fragile test with cobjclassp.
* New data type: tnode.Kaz Kylheku2019-09-221-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Binary search tree nodes are being added as a basic heap data type. The C type tag is TNOD, and the Lisp type is tnode. Binary search tree nodes have three elements: a key, a left child and a right child. The printed notation is #N(key left right). Quasiquoting is supported: ^#N(,foo ,bar) but not splicing. Because tnodes have three elements, they they fit into TXR's four-word heap cell, not requiring any additional memory allocation. These nodes are going to be the basis for a binary search tree container, which will use the scapegoat tree algorithm for maintaining balance. * tree.c, tree.h: New files. * Makefile (OBJS): Adding tree.o. * eval.c (expand_qquote_rec): Recurse through tnode cells, so unquotes work inside #N syntax. * gc.c (finalize): Add TNOD to no-op case in switch; tnodes don't require finalization. (mark_obj): Traverse tnode cell. * hash.c (equal_hash): Add TNOD case. * lib.c (tnode_s): New symbol variable. (seq_kind_tab): New entry for TNOD, mapping to SEQ_NOTSEQ. (code2type, equal): Handle TNOD. (obj_init): Initialize tnode_s variable. (obj_print_impl, populate_obj_hash): Handle TNOD. (init): Call tree_init function in tree.c. * lib.h (enum type, type_t): New enumeration TNOD. (struct tnod): New struct type. (union obj, obj_t): New union member tn of type struct tnod. (tnode_s): Declard. * parserc.c (circ_backpatch): Handle TNOD, so circular notation works through tnode cells. * parser.l (grammar): Recognize #N prefix, mapping to HASH_N token. * parser.y (HASH_N): New grammar terminal symbol. (tnode): New nonterminal symbol. (i_expr, n_expr): Add tnode cases to productions. (yybadtoken): Map HASH_N to "#N" string.
* All HAVE_* macros should be tested with #if, not #ifdef.Kaz Kylheku2019-09-121-1/+1
| | | | | | | | | | | | | | | | | * configure: In several config tests, test HAVE_SUPERLONG_T, HAVE_LONGLONG_T and HAVE_SYS_WAIT with #if. * lib.c: Test HAVE_GETENVIRONMENTSTRINGS with #if. * lib.h: Test HAVE_DOUBLE_INTPTR_T with #if. * mpi/mpi.c: Likewise. * mpi/mpi.h: Likewise. * socket.c: Test HAVE_GETADDRINFO with #if in three places. * stream.c: Test HAVE_SYS_WAIT and HAVE_SOCKETS with #if.
* structs: move SLOT_CACHE_SIZE macro.Kaz Kylheku2019-09-041-2/+0
| | | | | | | | | | Only struct.c refers to this symbol, and so only struct.c needs to be recompiled when someone experiments with different values. * lib.h (SLOT_CACHE_SIZE): Macro deleted here. * struct.c (SLOT_CACHE_SIZE): Macro moved here.
* New function: tailp.Kaz Kylheku2019-09-031-0/+1
| | | | | | | | | | * eval.c (eval_init): Register tailp intrinsic. * lib.c (tailp): New function. * lib.h (tailp): Declared. * txr.1: Documented.
* New function: cptr-buf.Kaz Kylheku2019-08-211-0/+1
| | | | | | | | | | * eval.c (eval_init): Register cptr-buf intrinsic. * lib.c (cptr_buf): New function. * lib.h (cptr_buf): Declared. * txr.1: Documented.
* New function: intern-fb.Kaz Kylheku2019-08-201-0/+1
| | | | | | | | | | | | | | | To accompany find-symbol-fb, there is intern-fb, which is like intern, but searches the fallback list. * eval.c (eval_init): Register intern-fb intrinsic. * lib.c (intern_fallback_intrinsic): New function. Does defaulting and error checks, then calls intern_fallback, just like intern_intrinsic calls intern. * lib.h (intern_fallback_intrinsic): Declared. * txr.1: Documented.
* lib: streamline interning slightly.Kaz Kylheku2019-08-201-0/+1
| | | | | | | | | | | | | | | | | | | | | We get rid of some defaulting and error checks from interning. This saves a few cycles on startup in the large number of intern calls that are performed. * eval.c (eval_init): Wire the intern intrinsic to the new intern_intrinsic function rather than intern. * lib.c (intern): Remove package lookup and error check on str argument. (intern_intrinsic): New function, which has the package lookup and error check. (intern_fallback): Remove package lookup and error check. * lib.h (intern_intrinsic): Declared. * txr.c (txr_main): Fix one instance of an intern call that relies on defaulting of the second argument, by passing cur_package.
* new functions: find-symbol and find-symbol-fb.Kaz Kylheku2019-08-191-1/+2
| | | | | | | | | | | | | | | | | | Turns out, there is already a find_symbol in lib.c, completely unused. * eval.c (eval_init): Register find-symbol and find-symbol-fb intrinsics. * lib.c (find_symbol): Fix this hitherto unused function to do correct defaulting of the package argument and, to accept an additional argument specifying the not-found value. (find_symbol_fb): New function. * lib.c (find_symbol): Declaration updated. (find_symbol_fb): Declared. * txr.1: Documented.
* seq_iter: remove pointless one-member union.Kaz Kylheku2019-08-141-3/+1
| | | | | | | | * lib.h (struct seq_iter): union ul with just one member replaced by that member itself. * lib.c (seq_iter_get_vec, seq_iter_peek_vec, seq_iter_init): refer to it->len instead of it->ul.len.
* ffi: support flexible structures.Kaz Kylheku2019-07-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit adds support for working with foreign structures which use the C99 "flexible array member", or possibly the old "C struct hack". Some improvements are made in the FFI code the area of incomplete types and bitfields. * ffi.c (struct txr_ffi_type): New flag members incomplete and bitfield. (ffi_varray_dynsize): Check incomplete type flag rather than for zero size. (ffi_flex_dynsize, ffi_flex_alloc, ffi_flex_struct_in): New static functions. (ffi_struct_in): Call ffi_flex_struct_in when doing by-value semantics on a flexible structure, just before converting last member. This checks for the length method, calls it, and adjusts the last member object as documented. (ffi_struct_get): Likewise. (bitfield_syntax_p): Static function removed; there is a flag for this now in the type, so no need to parse its syntax. (make_ffi_type_pointer): Test bitfield flag rather than using bitfield_syntax_p. (make_ffi_type_struct): Take new argument indicating that the struct is flexible. Wire in appropriate virtual functions based on this flag, and set the type's incomplete flag accordingly. Check bitfield flag rather than using bitfield_syntax_p for detecting bitfield members. Calculate the size of flexible struct differently: it is the offset of the last member. (make_ffi_type_union): Test bitfield flag rather than using bitfield_syntax_p. (ffi_struct_compile): Renamed to ffi_membs_compile. (ffi_membs_compile): New pointer parameter for returning an indication whether the member list specifies a flexible struct. Test the incomplete flag of a member type rather than size being zero. (ffi_type_compile): Follow rename of ffi_struct_compile to ffi_membs_compile. Pass down the flag obtained from ffi_membs_compile into make_ffi_type_struct so that a flexible struct type is created when necessary. Disallow arrays of bitfields. Set bitfield flag on bitfield types. (ffi_init_types): Set incomplete flag on void type. (ffi_make_call_desc): Test for incomplete and bitfield types using new flags. (ffi_typedef, ffi_size, ffi_alignof): Test for bitfield type using new bitfield flag. (carray_elem_check): New static function. (carray_buf, carray_pun, carray_unum, carray_num): Use new carray_elem_check to check for bad array element type. This uses the incomplete flag rather than checking for zero size, and also disallows bitfields. * lib.h (length_s): Declared. * txr.1: Flexible structs documented in new section. Also section on incomplete types. Description of sizeof operator gives more detaild about incomplete types including flexible structs.
* list_collect: handle objects.Kaz Kylheku2019-06-251-0/+1
| | | | | | | | | * lib.c (list_collect): Handle sequence-like COBJ objects. We can add an item to using their respective replace functions. (replace_obj): Change to external linkage. * lib.h (replace_obj): Declared.
* New function: bitset.Kaz Kylheku2019-06-181-0/+1
| | | | | | | | | | | * arith.c (bitset_s): New symbol variable. (bitset): New function. (arith_init): bitset_s initialized, bitset intrinsic registered. * lib.h (bitset): Declared. * txr.1: Documented bitset function and method.
* toseq: remove unused function.Kaz Kylheku2019-06-121-1/+0
| | | | | | * lib.c (toseq): Function removed. * lib.h (toseq): Declaration removed.
* seq iterators: new peek operation.Kaz Kylheku2019-06-121-0/+3
| | | | | | | | | | | | * lib.c (seq_iter_peek_nil, seq_iter_peek_list, seq_iter_peek_vec, seq_iter_peek_hash): New static functions. (seq_geti): New function. (seq_iter_init): Initialize new peek member of seq_iter structure. * lib.h (struct seq_iter): New member, peek. (seq_peek): New inline function. (seq_geti): Declared.
* lib: remove unused numeric macros.Kaz Kylheku2019-05-251-2/+0
| | | | * lib.h (maxint, minint): Remove unused macros.
* lib: more nuanced file access errors.Kaz Kylheku2019-05-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several new more specific exception types are derived from file-error and used. Error handlers can distinguish unexpected non-existence, unexpected existence and permission errors from each other and other errors. * lib.c (path_not_found_s, path_exists_s, path_permission_s): New symbol variables. (obj_init): New variables initialized. * lib.h (path_not_found_s, path_exists_s, path_permission_s): Declared. * parser.c (open_txr_file): Use new errno_to_file_error function to convert errno to exception symbol. * socket.c (open_sockfd): Likewise. * stream.c (open_directory, open_file, open_fileno, open_command, open_process, run, remove_path, rename_path): Likewise, and process-error is used in open_process and run instead of file-error for problems related to creating the process. * sysif.c (errno_to_file_error): New function. (mkdir_wrap, ensure_dir, chdir_wrap, getcwd_wrap, mknod_wrap, chmod_wrap, symlink_wrap, link_wrap, readlink_wrap, stat_impl, umask_wrap, ): Use errno_to_file_error to convert errno to exception symbol. (exec_wrap): Use process-error instead of file-error. * sysif.c (errno_to_file_error): Declared. * unwind.c (uw_init): Register path-not-found, path-exists and path-permission as subtypes of file-error. * txr.1: Documented.
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