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* eval: remove message about --backtrace option.Kaz Kylheku2022-05-201-4/+0
| | | | | | | * eval.c (error_trace): Don't mention that --backtrace can be used to enable backtraces. This is not only a nuisance, but appears in packaged programs which do not support such an option, making it highly misleading.
* split-str: new count parameter.Kaz Kylheku2022-05-171-1/+1
| | | | | | | | | | | | | | | | | | * eval.c (eval_init): Fix up registration of split-str to account for new parameter. * lib.c (split_str_keep): Implement new optional count argument. (spl): Pass nil value to split_str_keep for new argument. I'd like this function to benefit from this argument also, but the design isn't settled. (split_str): Pass nil argument to split_str_keep. * lib.h (split_str_keep): Declaration updated. * tests/015/split.tl: New tests. * txr.1: Documented.
* expander: new rule for macro-produced function callsKaz Kylheku2022-05-121-1/+6
| | | | | | | | | | | | | | * eval.c (do_expand): When a function call's arguments are expanded and produce a transformation, then if that function call had been produced by a macro, the transformed function call is tried again as a macro. This is necessary because TXR Lisp allows a symbol to be both a function and macro. When a macro-produced function call's arguments are expanded, the macro version of that function may, as a result of the argument transformations, have more opportunities for expansion. * txr.1: New section outlining how macro expansion generally works, with a special focus on this unusual new rule.
* load/@(load): use path_cat.Kaz Kylheku2022-04-251-3/+1
| | | | | | | * eval.c (load): Use path_cat and dir_name instead of ad hoc path munging. * match.c (v_load): Likewise.
* New: load can search multiple directories.Kaz Kylheku2022-04-251-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * eval.c (load_search_dirs_s): New symbol variable. (load): Initialize the name variable whose address is passed as the third argument of open_txr_file, which is now an in-out parameter. Pass t for the new search_dirs parameter, so that load benefits from the searching. (eval_init): Initialize load_search_dirs_s and register the *load-search-dirs* special variable. * eval.h (load_search_dirs_s): Declared. (load_search_dirs): New macro. * match.c (v_load): Initialize the variable passed as third argument of open_txr_file. * parser.c (open_txr_file): Take a new argument, search_dirs. If this is t, it tells the function "if the path is not found, then recurse on the *load-search-dirs* variable. Otherwise, if the value is not t, it is a list of the remaining directories to try. The existing parameter orig_in_resolved_out must now point to a location which is initialized. It is assumed to hold the original target that was passed to the load function. The first_try_path is a the path to actually try, derived from that one. Thus, the caller of open_txr_file gets to determine the initial try path using its own algorithm. Then any recursive calls that go through *load-search-dirs* will pass a first argument which is made of the original name, combined with a search dir. (load_rcfile): Pass pointer to initialized location as third argument of open-txr_file, and pass a nil value for search_dirs: no search takes place when looking for that file, which is at a single, fixed location. * parser.h (open_txr_file): Declaration updated. * txr.c (sysroot_init): Initialize *load-search-dirs*. (txr_main): Ensure third argument in all calls to open_txr_file points to initialized variable, with the correct value, and pass t for the search_dirs argument. * txr.1: Documented. * stdlib/doc-syms.tl: Updated. New: load can search multiple directories. * eval.c (load_search_dirs_s): New symbol variable. (load): Initialize the name variable whose address is passed as the third argument of open_txr_file, which is now an in-out parameter. Pass t for the new search_dirs parameter, so that load benefits from the searching. (eval_init): Initialize load_search_dirs_s and register the *load-search-dirs* special variable. * eval.h (load_search_dirs_s): Declared. (load_search_dirs): New macro. * match.c (v_load): Initialize the variable passed as third * argument of open_txr_file. * parser.c (open_txr_file): Take a new argument, search_dirs. If this is t, it tells the function "if the path is not found, then recurse on the *load-search-dirs* variable. Otherwise, if the value is not t, it is a list of the remaining directories to try. The existing parameter orig_in_resolved_out must now point to a location which is initialized. It is assumed to hold the original target that was passed to the load function. The first_try_path is a the path to actually try, derived from that one. Thus, the caller of open_txr_file gets to determine the initial try path using its own algorithm. Then any recursive calls that go through *load-search-dirs* will pass a first argument which is made of the original name, combined with a search dir. (load_rcfile): Pass pointer to initialized location as third argument of open-txr_file, and pass a nil value for search_dirs: no search takes place when looking for that file, which is at a single, fixed location. * parser.h (open_txr_file): Declaration updated. * txr.c (sysroot_init): Initialize *load-search-dirs*. (txr_main): Ensure third argument in all calls to open_txr_file points to initialized variable, with the correct value, and pass t for the search_dirs argument. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New function: isecp.Kaz Kylheku2022-03-301-0/+1
| | | | | | | | | | | | | | | | | * eval.c (eval_init): Register isecp intrinsic. * lib.c (isecp): New function. * lib.h (isecp): Declared. * stdlib/compiler.tl (lambda-apply-transform, dump-compiled-objects): Use isecp instead of isec, since the actual intersection of symbols isn't needed, only whether it exists. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New function: partition-if.Kaz Kylheku2022-02-231-0/+1
| | | | | | | | | | | | | | | | * eval.c (eval_init): Register partition-if intrinsic. * lib.c (partition_if_countdown_funv, partition_if_func): New functions. (partition_if): New function. * lib.h (partition_if): Declared. * tests/012/seq.tl: New test cases. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New functions: find-max-key and find-min-key.Kaz Kylheku2022-02-211-0/+2
| | | | | | | | | | | | | * eval.c (eval_init): Register find-max-key and find-min-key intrinsics. * lib.c (find_max_key, find_min_key): New functions. * lib.h (find_max_key, find_min_key): Declared. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* lisplib: rename to autoload.Kaz Kylheku2022-02-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | * Makefile (OBJS): rename lisplib.o to autoload.o. * lisplib.c: Renamed to autoload.c. (lisplib_init_tables): Renamed to autoload_init_tables. (lisplib_init): Renamed to autoload_init, and calls autoload_init_tables. (lisplib_try_load): Renamed to autoload_try. (autoload_try_fun, autoload_try_var, autloload_try_slot, autoload_try_struct, autoload_try_keyword): Follow rename. * lisplib.h: Renamed to autoload.h. (lisplib_init): Renamed to autoload_init. * eval.c: Include autoload.h. (eval_init): Follow rename of lisplib_init. * gencadr.txr: include "autoload.h" * cadr.c: Regenerated.
* lisplib: rename lisplib funtions to autoload prefix.Kaz Kylheku2022-02-181-18/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * lisplib.c (lisplib_init): Follow rename, and rename try-load-fun to autoload-try-fun. (lisplib_try_load_fun, lisplib_try_load_var, lisplib_try_load_fun_var, lisplib_try_load_slot, lisplib_try_load_struct, lisplib_try_load_keyword): Renamed from `lisplib_try_load_@kind` to `autoload_try_@kind`. * lisplib.h (lisplib_try_load_fun, lisplib_try_load_var, lisplib_try_load_fun_var, lisplib_try_load_slot, lisplib_try_load_struct, lisplib_try_load_keyword): Declarations renamed. * eval.c (lookup_global_var, lookup_sym_lisp1, lookup_fun, lookup_mac, lookup_symac, lookup_symac_lisp1, special_var_p, expand_param_macro, rt_defvar, rt_defv, op_defsymacro, rt_defsymacro, rt_defun, rt_defmacro, makunbound, fmakunbound, mmakunbound): Follow rename. * struct.c (make_struct_type, find_struct_type, lookup_slot_load, lookup_static_slot_load, lookup_static_slot_desc_load, slot_types, static_slot_types): Follow rename. * stdlib/place.tl (get-place-macro): Follow rename of try-load-fun to autoload-try-fun.
* lisplib: split lisplib_try_load into namespaces.Kaz Kylheku2022-02-181-18/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * lisplib.c (lisplib_init): Change sys:try-load (only used by place.tl) to sys:try-load-fun, and register it to (lisplib_try_load): External function becomes static. (lisplib_try_load_fun, lisplib_try_load_var, lisplib_try_load_fun_var, lisplib_try_load_slot, lisplib_try_load_struct, lisplib_try_load_keyword): New functions. * lisplib.h (lisplib_try_load): Declaration removed. (lisplib_try_load): External function becomes static. (lisplib_try_load_fun, lisplib_try_load_var, lisplib_try_load_fun_var, lisplib_try_load_slot, lisplib_try_load_struct, lisplib_try_load_keyword): Declared. * eval.c (lookup_global_var, lookup_var, lookup_symac, lookup_symac_lisp1, rt_defvarl, rt_defv, op_defsymacro, rt_defsymacro, makunbound): Use lisplip_try_load_var. (lookup_fun, lookup_mac, rt_defun, rt_defmacro, fmakunbound, mmakunbound): Use lisplib_try_load_fun. (expand_param_macro): Use lisplib_try_load_keyword, which is a catch-all namespace for anything tied to keywords. * struct.c (make_struct_type, find_struct_type): Use lisplib_try_load_struct. (lookup_sloat_load, lookup_static_slot_load, lookup_static_slot_desc_load, slot_types, static_slot_types): Use lisplib_try_load_slot. * stdlib/place.tl (get-place-macro): Use try-load-fun, rather than try-load.
* macro-time: special op becomes a macro.Kaz Kylheku2022-02-121-10/+15
| | | | | | | | | | | | | * eval.c (me_macro_time): New static function (do_expand): Remove handling of macro_time_s. (eval_init): Remove special operator registration of macro-time; add macro registration. * txr.1: Documentation of macro-time updated, revised and moved from the top the Macros section to be adjacent to equot. * stdlib/doc-syms.tl: Updated.
* Use null_string throughout code base.Kaz Kylheku2022-02-051-1/+1
| | | | | | | | | | | | | | | | * eval.c (load): Use null_string instead of lit(""). * lib.c (obj_init): Likewise. * match.c (LOG_MATCH, LOG_MISMATCH, do_txeval): Likewise. * parser.c (regex_parse, lisp_parse_impl, find_matching_syms): Likewise. * stream.c (do_parse_mode): Likewise. * txr.c (sysroot_init): Likewise. (txr_main): Replace string(L"") with null_string.
* New function: copy-cptr.Kaz Kylheku2022-01-281-0/+1
| | | | | | | | | | | | | | | * eval.c (eval_init): copy-cptr intrinsic registered. * lib.c (copy_cptr): New function. (copy): Use copy_cptr for CPTR objects. * lib.h (copy_cptr): Declared. * tests/017/ffi-misc.tl: New test cases. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* Remove numerous unused global functions.Kaz Kylheku2022-01-231-6/+0
| | | | | | | | | | | | | | | | | | | | | | | * eval.[ch] (lookup_global_var_l): Remove. * itypes.[ch] (c_schar): Likewise. * lib.[ch] (null_list, rcyc_list, gequal, func_n6v, func_n7v, func_n8v, do_pa_123_23, pa_123_23, orf, aconsql_new_c): Likewise. (obj_init): Remove references to null_list. * mpi/mpi-config.h (MP_FOR_TXR): New preprocessor symbol, defined as 1. * mpi/mpi.c (mp_get_prec, mp_set_prec, mp_init_array, mp_clear_array, mp_set_word, mp_exptmod_d, mp_cmp_d, mp_cmp_mag, mp_cmp_int, mp_lcm, mp_xgcd, mp_invmod, mp_char2value): Exclude using #if !MPI_FOR_TXR, rather than remove. We don't bother excluding the declarations in the header. * utf8.[ch] (w_freopen): Remove.
* lib: new functions nand, nor, nandf and norf.Paul A. Patience2022-01-221-0/+28
| | | | | | | | | | | | | | * eval.c (me_nand, me_nor, nor_fun, nand_fun): New functions. (eval_init): Register new intrinsics. * lib.c (nandv, norv): New functions. * lib.h (nandv, norv): Declared. * txr.1: Documented, along with trivial fixes to the descriptions of and, or, andf, orf and notf. * stdlib/doc-syms.tl: Updated.
* quasiquote: make new @,expr work in dot position.Kaz Kylheku2022-01-181-7/+14
| | | | | | | | | | | | | | | Bugfix: the newly introduced @.expr fails in the dotted position because ^(a . @,expr) turns into (list 'a 'let ...). * eval.c (is_meta_unquote): New static function. (expand_qquote_rec): Replace existing shape test with is_meta_unquote. We must also use this test in one more place: whenever the cdr of a list has the meta unquote shape, we must treat the result similarly to a dotted atom, by converting to append format. * tests/010/qquote.tl: Test cases to cover this.
* quasiquote: support @,expr hack.Kaz Kylheku2022-01-181-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For better or worse, TXR Lisp has a dichotomy of representation that @<atom> produces sys:var syntax, whereas @<compound> produces sys:expr. This can cause an issue in backquoting. Suppose you want to use backquote to generate sytax like (a @b) where the b comes from a variable. The problem is that (let ((x 'b)) ^(a @,x)) doesn't do what you might expect: it produces (sys:expr b) rather than (sys:var b). This patch adds a hack into the quasiquote expander which causes it to generate code to do what you expect. Old behavior: 1> (expand '^(a @,x)) (list 'a (list 'sys:expr x)) New behavior: 1> (expand '^(a @,x)) (list 'a (let ((#:g0012 x)) (if (atom #:g0012) (list 'sys:var #:g0012) (list 'sys:expr #:g0012)))) In other words, x will be evaluted, and the based on the type of the object which emerges, either sys:var or sys:expr syntax is generated. * eval.c (expand_qquote_rec): Implement the above hack. We are careful to only do this when this exact shape occurs in the syntax: (sys:expr (sys:unquote item)). * tests/010/qquote.tl: New file. * txr.1: Documented.
* New function: match-fboundp.Kaz Kylheku2022-01-171-0/+1
| | | | | | | | | | | | | | | | | | User vapnik spaknik was asking in the mailing list whether there is an existence test for TXR pattern functions. Now there is. * eval.c (eval_init): Register match-fboundp intrinsic. * match.c (match_fbound): New function. * match.h (match_fbound): Declared. * tests/011/txr-case.txr: New test cases. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* Copyright year bump 2022.Kaz Kylheku2022-01-111-1/+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, lex.yy.c.shipped, 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, psquare.h, rand.c, rand.h, regex.c, regex.h, signal.c, signal.h, socket.c, socket.h, stdlib/arith-each.tl, stdlib/asm.tl, stdlib/awk.tl, stdlib/build.tl, stdlib/cadr.tl, stdlib/compiler.tl, stdlib/constfun.tl, stdlib/conv.tl, stdlib/copy-file.tl, stdlib/debugger.tl, stdlib/defset.tl, stdlib/doloop.tl, stdlib/each-prod.tl, stdlib/error.tl, stdlib/except.tl, stdlib/ffi.tl, stdlib/getopts.tl, stdlib/getput.tl, stdlib/hash.tl, stdlib/ifa.tl, stdlib/keyparams.tl, stdlib/match.tl, stdlib/op.tl, stdlib/optimize.tl, stdlib/package.tl, stdlib/param.tl, stdlib/path-test.tl, stdlib/pic.tl, stdlib/place.tl, stdlib/pmac.tl, stdlib/quips.tl, stdlib/save-exe.tl, stdlib/socket.tl, stdlib/stream-wrap.tl, stdlib/struct.tl, stdlib/tagbody.tl, stdlib/termios.tl, stdlib/trace.tl, stdlib/txr-case.tl, stdlib/type.tl, stdlib/vm-param.tl, stdlib/with-resources.tl, stdlib/with-stream.tl, stdlib/yield.tl, stream.c, stream.h, struct.c, struct.h, strudel.c, strudel.h, sysif.c, sysif.h, syslog.c, syslog.h, termios.c, termios.h, time.c, time.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, y.tab.c.shipped: Copyright year bumped to 2022.
* Casts have crept into the code not wrapped by macros.Kaz Kylheku2022-01-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is against TXR coding conventions to use the C cast notation. The usage creeps into the code. To find instances of this, we must compile using GNU g++, and add -Wold-style-cast via EXTRA_FLAGS. * eval.c (prof_call): Use macro instead of cast. * ffi.c (pad_retval, ffi_varray_alloc, make_ffi_type_union, carray_dup, carray_replace, uint_carray, int_carray, put_carray, fill_carray): Likewise. * itypes.c (c_i64, c_u64): Likewise. * lib.c (cyr, chk_xalloc, spilt_str_keep, vector, cobj_register): Likewise. * linenoise.c (record_undo): Likewise. Also, drop one superfluous cast: wstrdup_fn returns wchar_t *. (flash, edit_insert, edit_insert_str): Use macro instead of cast. * mpi/mpi.c (s_mp_ispow2d): Likewise. * parser.c (lino_getch): Likewise. * rand.c (make_random_state, random_buf): Likewise. * stream.c (generic_get_line, do_parse_mode): Likewise. * struct.c (get_duplicate_supers, call_initfun_chain, call_postinitfun_chain): Likewise. * sysif.c (c_time): Likewise. * tree.c (tr_insert): Likewise.
* Eliminate declaration-after-statement everywhere.Kaz Kylheku2021-12-291-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The use of -ansi doesn't by itself diagnose instances of some constructs we don't want in the project, like mixed declarations and statements. * configure (diag_flags): Add -Werror=declaration-after-statement. This is C only, so filter it out for C++. Also add -Werror=vla. * HACKING: Update inaccurate statements about what dialect we are using. TXR isn't pure C90: some GCC extensions are used. We even use long long if the configure script detects it as working, and some C99 library features. * buf.c (replace_buf, buf_list): Fix by reordering. * eval.c (op_dohash, op_load_time_lit): Fix by reordering. * ffi.c (ffi_simple_release): Fix by reordering. (align_sw_get): Fix empty macro to expand to dummy declaration so a semicolon after it isn't interpreted as a statement. On platforms with alignment, remove a semicolon from the macro so that it requires one. (ffi_i8_put, ffi_u8_put): Fix by reordering. * gc.c (gc_init): Fix with extra braces. * hash.c (hash_init): Fix by reordering. * lib.c (list_collect_revappend, sub_iter, replace_str, replace_vec, mapcar_listout, mappend, mapdo, window_map_list, subst): Fix by reordering. (gensym, find, rfind, pos, rpos, in, search_common): Fix by renaming optional argument and using declaration instead of assignment. * linenoise/linenoise.c (edit_in_editor): Fix by reordering. * parser.c (is_balanced_line): Fix by reordering. * regex.c (nfa_count_one, print_rec): Fix by reordering. * signal.c (sig_mask): Fix by reordering. * stream.c (get_string): Fix by renaming optional argument and using declaration instead of assignment. * struct.c (lookup_static_slot_desc): Fix by turning mutated variable into block local. (umethod_args_fun): Fix by reordering. (get_special_slot): Fix by new scope via braces. * sysif.c (usleep_wrap): Fix by new scope via braces. (setrlimit_wrap): Fix by new scope via braces. * time.c (time_string_meth, time_parse_meth): Fix by reordering. * tree.c (tr_do_delete_spec): Fix by new scope via braces. * unwind.h (uw_block_beg): New macro which doesn't define RESULTVAR but expects it to refers to an existing one. (uw_block_begin): Replace do while (0) with enum trick so that we have a declaration that requires a semicolon, rather than a statement, allowing declarations to follow. (uw_match_env_begin): Now opens a scope and features the same enum trick as in uw_block_begin. This fixes a declaration-follows-statement issue in the v_output function in match.c. (uw_match_env_end): Closes scope opened by uw_match_env_begin. * unwind.c (revive_cont): Fix by introducing variable, and using new uw_block_beg macro. * vm.c (vm_execute_closure): Fix using combination of local variable and reordering.
* eval: fix optional parameter bug from 2014.Kaz Kylheku2021-12-231-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This bug affects optional parameters which either have no default expression, or one that is nil. For instance x in (lambda (: (x nil))) or (lambda (: x)). When such a parameter is given the : symbol as an argument, it is not being bound, as if it weren't there. ((lambda (: x) x) :) -> ;; error: unbound variable x This issue is not a regression; it was introduced in the commit which introduced the colon convention to optionals, as well as init expressions and presence-indicating variables, commit 68c084269581f32f0a7b859446ae2efb6c6a26c0 made in February 2014. This might be the first instance of an interpreter bug being found that is not present in the compiler. * eval.c (bind_args): The idea here was that when the argument to an optional the colon keyword symbol, and the optional's initform is nil, we can skip the overhead of calling eval to get that initform's value. Unfortunately, the skip was extended over the code which binds the parameter. Only the eval can be skipped! * tests/012/lambda.tl: New test cases to cover this.
* The pairlis function comes to TXR Lisp.Kaz Kylheku2021-12-221-0/+1
| | | | | | | | | | | | * eval.c (eval_init): Register pairlis intrinsic. * lib.c, lib.h (pairlis): New function. * tests/012/seq.tl: New test cases. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New functions: subq, subql, subqual and subst.Kaz Kylheku2021-12-221-0/+4
| | | | | | | | | | | | | | | * eval.c (eval_init): Register new intrinsics. * lib.c, lib.h (subq, subql, subqual, subst): New functions. * tests/012/seq.tl: New test cases. * stdlib/optimize.tl (subst): Function removed. The new subst drop-in replaces this one. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* maprodo: bugfix: spurious return value.Kaz Kylheku2021-12-201-9/+7
| | | | | | | | | | | | | | | There are cases when maprodo returns a non-nil value, even though it is supposed to collect nothing. This is because though it is is collecting nothing, that nothing is sometimes converted to an alternative return type via make_like. * eval.c (prod_common): We allow the collect_fn function pointer to be null, to indicate nothing is to be collected, rather than using a stub. If collect_fn is null, we just call the mapping function without collecting its value, and at the end, we do not involve make_like and just return nil. (collect_nothing): Static function removed. (maprodo): Pass null function pointer instead of collect_nothing.
* case macros: bug in singleton key optimization.Kaz Kylheku2021-12-081-1/+1
| | | | | | | | | | | | * eval.c (me_case): Reduce (key) to key only if key is an atom. Otherwise we reduce ((a b c)), which is a single list-valued key to (a b c), which looks like three keys. This was introduced on Oct 25, 2017 in commit b72c9309c8d8f1af320dce616a69412510531b48, making it a regression. * tests/012/case.tl: New file. The last test case fails without this bugfix. The others pass either way.
* rot, nrot: new functions.Kaz Kylheku2021-12-071-0/+2
| | | | | | | | | | | | | | * eval.c (eval_init): nrot, rot intrinsics registered. * lib.c (nrot, rot): New functions. * lib.h (nrot, rot): Declared. * tests/012/seq.tl: New test cases. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* tuples*: new function.Kaz Kylheku2021-12-041-0/+1
| | | | | | | | | | | | | | | * eval.c (eval_init): Register tuples* intrinsic. * lib.c (tuples_star_func): New static function. (tuples_star): New function. * lib.h (tuples_star): Declared. * tests/012/seq.tl: New test cases. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* eval: fix single-list-argument case in maprodo.Paul A. Patience2021-09-171-1/+1
| | | | | | | Calling maprodo with one list argument would fall back on mappend rather than mapdo. * eval.c (maprodo): mappendv -> mapdov.
* exceptions: hack to store errno in string object.Kaz Kylheku2021-09-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Basic idea: when we throw an exception that pertains to a system error which has an errno code, we can stick the errno into the memory area of the character string, into the wchar_t that immediately follows the null terminator. We can do this because strings track their actual allocation size. A pair of setter/getter functions to set and retrieve this value are provided, and all functions in the code which can set such a code are updated to do so, simply by calling the newly added uw_ethrowf that drop-in replaces for uw_throwf. * lib.[ch] (string_set_code, string_get_code): New functions. * unwind.[ch] (uw_ethrowf): New function. * eval.c (eval_init): Register string-set-code and string-get-code intrinsics. * ftw.c (ftw_wrap): Switch to uw_ethrowf. * parser.c (open_txr_file): Likewise. * socket.c (dgram_overflow): Store the ENOBUFS error in errno, and use uw_ethrowf instead uw_throwf. (dgram_get_byte_callback, dgram_flush, sock_bind, to_connect, open_sockfd, sock_connect, sock_listen, sock_accept, sock_shutdown, sock_timeout, socketpair_wrap): Switch to uw_ethrowf. * stream.c (dev_null_get_fd, stdio_maybe_read_error, stdio_maybe_error, stdio_close, pipe_close, open_directory, open_file, open_fileno, open_tail, fds_subst, open_subprocess, open_command, remove_path, rename_path, tmpfile_wrap, mkdtemp_wrap, mkstemp_wrap): Switch to uw_ethrowf. * sysif.c (mkdir_wrap, ensure_dir, chdir_wrap, getcwd_wrap, rmdir_wrap, mknod_wrap, mkfifo_wrap, chmod_wrap, do_chown, symlink_wrap, link_wrap, readlink_wrap, close_wrap, val exec_wrap, stat_impl, do_utimes, pipe_wrap, poll_wrap, getgroups_wrap, setuid_wrap, seteuid_wrap, setgid_wrap, setegid_wrap, setgroups_wrap, getresuid_wrap, setresuid_wrap, setresgid_wrap, crypt_wrap, uname_wrap, opendir_wrap, getrlimit_wrap, setrlimit_wrap): Likewise. * termios.c (tcgetattr_wrap, tcsetattr_wrap, tcsendbreak_wrap, tcdrain_wrap, tcflush_wrap, tcflow_wrap): Likewise. * tests/018/errno.tl: New file. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* string-finish: new function.Kaz Kylheku2021-09-071-0/+1
| | | | | | | | | | | | * eval.c (eval_init): Register string-finish intrinsic. * lib.c (string_finish): New function. * lib.h (string_finish): Declared. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* string-extend: third optional argument.Kaz Kylheku2021-09-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A Boolean optional argument to string-extend indicates whether this is likely the last call to string-extend, so memory can be trimmed accordingly. * eval.c (eval_init): Update string-extend registration. * filter.c (trie_filter_string): Pass nil for new argument of string_extend. * lib.c (str_seq, replace_str, lazy_str_force, lazy_str_force_upto): Pass nil for new argument of string_extend. (rem_impl, remove_if, separate): Pass t for new argument of string_extend on last iteration, nil otherwise. (string_extend): Implement new third argument, defaulted to nil. Switch from chk_grow_vec to the more specific chk_wrealloc, which simplifies the code. * lib.h (string_extend): Declaration updated. * parser.y (litchars): Pass t as last argument of string_extend since we know syntactically that these reductions finalize the string. (restlitchar): Pass nil as the last argument of string_extend, since we know syntactically that it isn't the last. * regex.c (scan_until_common): Pass nil for new argument of string_extend. * txr.1: Documented.
* load: scope change for load hooks.Kaz Kylheku2021-09-031-1/+4
| | | | | | | | | | | | | | * eval.c (run_load_hooks): Install the given environment as dyn_env temporarily, and don't restore it until after calling the hooks. Thus the specified environment is now in effect when running the hooks. Also, pass nil to lookup_var, in the spirit of the previous commit. The fact that load_dyn_env had to be passed to lookup_var previously, which is an anti-pattern, tells us that this scoping rule was a code smell. If the *load-hooks* value comes from a given dynamic environment, then those functions should be executed in exactly that environment. * txr.1: Documentation updated.
* lookup_var: don't pass dyn_env explicitly.Kaz Kylheku2021-09-031-3/+3
| | | | | | | | | | | | | Since lookup_var(nil, ...) skips the environment and goes for dyn_env, there is no need to pass dyn_env explicitly; it's a bit of an anti-pattern. The argument is intended for lexical scopes. * eval.c (eval_exception, expand_eval, load): Pass nil to lookup_var instead of the current dynamic environment. * match.c (v_load): Likewise. * parser.c (txr_parse, read_eval_ret_last): Likewise.
* load: new macros push-after-load and pop-after-load.Kaz Kylheku2021-09-031-0/+23
| | | | | | | | | | | | | * eval.c (me_push_after_load, me_pop_after_load): New static functions. (eval_init): Register push-after-load and pop-after-load intrinsic macros. * tests/019/load-hook.tl: Tests for correct expansion. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New function: delcons.Kaz Kylheku2021-09-021-0/+1
| | | | | | | | | | | | * eval.c (eval_init): Register delcons intrinsic. * lib.[ch] (delcons): New function. * tests/010/cons.tl: New file. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* load: new *load-hooks* feature.Kaz Kylheku2021-09-021-2/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | *load-hooks* lets a .txr, .tl or .tlo file specify actions to be taken when the loading of that file completes, whether normally or via an exception. They are also honored by process exit. For instance, with this, we can have a Lisp file that behaves like a script which cleans up after itself (e.g. removing temporary files) even if it is not run as a stand-alone program, but invoked via (load ...). Because it's not a stand-alone program, it cannot simply use the at-exit-call mechanism. The unwind-protect operator could be used, but it's inconvenient because it protects a single form. The *load-hooks* feature in effect protects all the top level forms of a load, similarly to unwind-protect. Also, unwind-protect does not guard against a process exit. (However, *load-hooks* does not guard against an abnormal exit, only normal termination). * eval.c (load_hooks_s): New symbol variable. (run_load_hooks): New function. (run_load_hooks_atexit): New static function. (load): bind *load-hooks* to nil around load. Implement the hooks processing via run_load_hooks, taking care to pass the load-time dynamic environment that has already been undone. (eval_init): Initialize load_hooks_s and register the *load-hooks* variable. Register run_load_hooks_atexit with atexit, so the current value of *load-hooks* is processed on process exit. * eval.h (load_hooks_s, run_load_hooks): Declared. * match.c (v_load): Similar changes as in load. * txr.c (txr_main): Run the load hooks with run_load_hooks immediately after processing the .txr or .tl file, before entering the listener. * tests/019/load-hook.tl: New directory and file * tests/load-hook.tl: New file. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* ecase: diagnose bad syntax.Kaz Kylheku2021-08-211-0/+4
| | | | * eval.c (me_ecase): Diagnose missing test form, like me_case.
* New ecase macros.Kaz Kylheku2021-08-181-1/+38
| | | | | | | | | | | | | | | | | | | | Even prior to discovering the recent defect in deffi, which was caused by a missing case in caseql, combined with poor testing, I was already thinking about adding ecase macros. The introduction of must-match and must-match-case also shows my motivation. That deffi bug convinced me to take action and implement these. * eval.c (case_error_s) New symbol variable. (me_ecase): New static function. (eval_init): Register new intrinsic macros ecaseq, ecaseql, ecasequal, ecaseq*, ecaseql* and ecasequal*. Intern case-error and initialize case_error_s. * txr.1: Documented. Also updated Exception Hierarchy diagram with match-error and case-error. * stdlib/doc-syms.tl: Updated.
* eval: de-duplicate built-in macro definitions.Kaz Kylheku2021-08-181-19/+26
| | | | | | | * eval.c (eval_init): Numerous macros share the same implementation function, and their registrations make wasteful repeated func_f2 calls to hoist that function from C to Lisp more than once. Let's go through and condense all of them.
* license: reformat to fit 80 columns.Kaz Kylheku2021-08-161-12/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Makefile, alloca.h, args.c, args.h, arith.c, arith.h, buf.c, buf.h, chksum.c, chksum.h, chksums/crc32.c, chksums/crc32.h, combi.c, combi.h, 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, lisplib.c, lisplib.h, match.c, match.h, parser.c, parser.h, parser.l, parser.y, rand.c, rand.h, regex.c, regex.h, signal.c, signal.h, socket.c, socket.h, stdlib/asm.tl, stdlib/awk.tl, stdlib/build.tl, stdlib/compiler.tl, stdlib/constfun.tl, stdlib/conv.tl, stdlib/copy-file.tl, stdlib/debugger.tl, stdlib/defset.tl, stdlib/doloop.tl, stdlib/each-prod.tl, stdlib/error.tl, stdlib/except.tl, stdlib/ffi.tl, stdlib/getopts.tl, stdlib/getput.tl, stdlib/hash.tl, stdlib/ifa.tl, stdlib/keyparams.tl, stdlib/match.tl, stdlib/op.tl, stdlib/optimize.tl, stdlib/package.tl, stdlib/param.tl, stdlib/path-test.tl, stdlib/pic.tl, stdlib/place.tl, stdlib/pmac.tl, stdlib/quips.tl, stdlib/save-exe.tl, stdlib/socket.tl, stdlib/stream-wrap.tl, stdlib/struct.tl, stdlib/tagbody.tl, stdlib/termios.tl, stdlib/trace.tl, stdlib/txr-case.tl, stdlib/type.tl, stdlib/vm-param.tl, stdlib/with-resources.tl, stdlib/with-stream.tl, stdlib/yield.tl, stream.c, stream.h, struct.c, struct.h, strudel.c, strudel.h, sysif.c, sysif.h, syslog.c, syslog.h, termios.c, termios.h, time.c, time.h, tree.c, tree.h, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h, vm.c, vm.h, vmop.h: License reformatted. * lex.yy.c.shipped, y.tab.c.shipped, y.tab.h.shipped: Updated.
* lazy-stream-cons: control close throwing behavior.Kaz Kylheku2021-08-071-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | * eval.c (eval_init): Update registrations of lazy-stream-cons and get-lines with one more optional argument. * lib.c (simple_lazy_stream_func_nt, lazy_stream_func_nt): New static functions. (lazy_stream_cons): Take a new argument, no_throw_close, defaulting it to nil. When calling close_stream directly, pass the inverted value of no_throw_close. Choose the new _nt functions for the lazy list if no_throw_close is true; those functions pass nil as the second argument of close_stream. * lib.h (lazy_stream_cons): Declaration updated. * match.c (v_next_impl, open_data_source, match_fun): Pass down the nothrow value to lazy_stream_cons, or else nil in situations when that is not applicable or there is no such value. Thus the :nothrow feature of v_next will now not only ensure that there is no exception when opening the stream but also when closing it. Unusual situations encountered when the lazy list reads from the stream still throw. * txr.1: Documented.
* gc: problem in environment-copying functions.Kaz Kylheku2021-07-291-7/+12
| | | | | | | | | | | | | * eval.c (copy_env, deep_copy_env): These functions are not following a protocol for object construction that is correct under generational GC. They are allocating a new object with make_obj first, and then calling functions to copy the constituent elements to populate into the object with a direct assignment. This direct assignment is wrong; the set macro is required. A better fix, rather than using the set macro, is to copy the constituent parts first, holding them in local variables, then allocate the new object, and finally, without doing any other memory allocating operations, assign the constituent parts into the new object.
* places: remove unnecessary zap_s variable.Paul A. Patience2021-07-271-2/+1
| | | | | | | | | | | | The zap_s variable is a vestige of op_modplace. It must have been missed when op_modplace was removed in commit 209e731429a0fd890ec6d922c1efc6f02d81a032. * eval.c (zap_s): Delete variable. (eval_init): Remove initialization of zap_s. * protsym.c (zap_s): Remove extern variable declaration. (protected_sym): Remove reference to zap_s.
* hash: change make_hash interface.Kaz Kylheku2021-07-221-20/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The make_hash function now takes the hash_weak_opt_t enumeration instead of a pair of flags. * hash.c (do_make_hash): Take enum argument instead of pair of flags. Just store the option; nothing to calculate. (weak_opt_from_flags): New static function. (tweak_hash): Function removed. (make_seeded_hash): Adjust to new do_make_hash interface with help from weak_opt_from_flags. (make_hash, make_eq_hash): Take enum argument instead of pair of flags. (hashv): Calculate hash_weak_opt_t enum from the extracted flags, pass down to make_eq_hash or make_hash. * hash.h (tweak_hash): Declration removed. (make_hash, make_eq_hash): Declarations updated. * eval.c (me_case, expand_switch): Update make_hash calls to new style. (eval_init): Update make_hash calls and get rid of tweak_hash calls. This renders the tweak_hash function unused. * ffi.c (make_ffi_type_enum, ffi_init): Update make_hash calls to new style. * filter.c (make_trie, trie_add, filter_init): Likewise. * lib.c (make_package_common, obj_init, obj_print): Likewise. * lisplib.c (lisplib_init): Likewise. * match.c (dir_tables_init): Likewise. * parser.c (parser_circ_def, repl, parse_init): Likewise. * parser.l (parser_l_init): Likewise. * struct.c (struct_init, get_slot_syms): Likewise. * sysif.c (get_env_hash): Likewise. * lex.yy.c.shipped, y.tab.c.shipped: Updated.
* hash: support both semantics of weak keys + values.Kaz Kylheku2021-07-211-15/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hash tables with weak keys and values now support a choice of both possible semantics: under and-semantics, an entry lapses when both the key and value are unreachable. Under or-semantics, an entry lapses if either the key or value is unreachable. The and-semantics is new. Until TXR 266, only or-semantics was supported. This will be the default: when a hash table is specified as :weak-keys and :weak-vals, it will have or-semantics. The keywords :weak-or and :weak-and specify weak keys and values, with the specific semantics. They are utually exclusive, but tolerate the presence of :weak-keys and :weak-vals. The make-hash function is being extended such that if its leftmost argument, <weak-keys>, is specified as one of the keywords :weak-and or :weak-or, then the hash table will have weak keys and values with the specified semantics, and the <weak-vals> argument is ignored (values are weak even if that argument is false). * eval.c (eval_init): Initially register the top_vb, top_mb, top_smb, special and builtin hashes as ordinary hashes: no weak keys or values. Then use tweak_hash to switch to weak keys+vals with and-semantics. We do it this way because the keywords are not yet initialized; we cannot use them. * hash.h (enum hash_flags, hash_flags_t): Moved to header. Member hash_weak_both renamed to hash_weak_or. New member hash_weak_and. (weak_and_k, weak_or_k): New keyword variables. (hash_print_op): Handle hash_weak_and by printing :weak-and. (hash_mark): Handle hash_weak_and by marking nothing, like hash_weak_or. (do_make_hash): Check first argument against the two new keywords and set flags accordingly. This function is called from eval_init before the keywords have been initialized, in which case weak_keys == weak_and_k is true when both are nil; we watch for that. (tweak_hash): Now returns void and takes a hash_flags_t argument which is simply planted. (do_wak_tables): Implement hash_weak_and case. Remove the compat 266 stuff from hash_weak_or. Compatibility is no longer required since we are not changing the default semantics of hash tables. Phew; that's a load of worry off the plate. (hashv): Parse the two new keywords, validate and provide semantics. (hash_init): Initialize weak_and_k and weak_or_k kewyords. * hash.h (enum hash_flags, hash_flags_t): Moved here now. (weak_and_k, weak_or_k): Declared. * lib.c (compat_fixup): Remove call to parse_compat_fixup. * parser.c (parse_init): Create stream_parser_hash with and-semantics. (parse_compat_fixup): Function removed. * parser.h (parse_compat_fixup): Declaration removed. * txr.1: Hash documentation updated.
* compat: fix glaringly broken init-time handling.Kaz Kylheku2021-07-211-22/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We are doing numerous compat_ver checks in various init functions, to enact alternative symbol registrations. Only problem is, compat_ver is always zero during initialization; it is not set until the -C option is processed in txr_main. Registrations must be fixed up after initialization; that's what the compat_fixup mechanism is for. This is an long-standing problem which affects compatibility operation going back over 150 versions. * arith.c (arith_init): Move compat logic to arith_compat_fixup. (arith_compat_fixup): New function. * arith.h (arith_compat_fixup): Declared. * eval.c (eval_init): Move compat logic to eval_compat_fixup. * ffi.c (ffi_init): Move compat logic to ffi_compat_fixup. (ffi_compat_fixup): New function. * ffi.h (ffi_compat_fixup): Declared. * regex.c (regex_init): Move compat logic to regex_compat_fixup. (regex_compat_fixup): New function. * regex.h (regex_compat_fixup): Declared. * stream.c (stream_init): Move compat logic to stream_compat_fixup. (stream_compat_fixup): New function. * stream.h (stream_compat_fixup): Declared. * struct.c (struct_init): Move compat logic to struct_compat_fixup. (struct_compat_fixup): New function. * struct.h (stream_compat_fixup): Declared. * lib.c (compat_fixup): Call arith_compat_fixup, ffi_compat_fixup, regex_compat_fixup, stream_compat_fixup and struct_compat_fixup.
* parse/eval: use weak-both hash tables.Kaz Kylheku2021-07-201-6/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | This addresses the problem that a4c376979d15323ad729e92e41ba43768e8dc163 tried to fix. * eval.c (eval_init): Make all the top-level binding tables, top_fb, top_vb, top_mb, top_smb, special and builtin, weak-both tables: keys and values are weak. This way, the entries disappear if both key and value are unreachable, even if they refer to each other. (eval_compat_fixup): In 266 or earlier compat mode, weak-both tables don't have the right semantics, so we tweak the tables to weak-key tables. * parser.c (parse_init): Same treatment for stream_parser_hash. We want an entry to disappear from the hash if neither the parser nor the stream are reachable. (parse_compat_fixup): New function. * parser.h (parse_compat_function): Declared. * hash.c, hash.h (tweak_hash): New function. * lib.c (compat_fixup): Call parse_compat_fixup.
* lib: new function separate.Paul A. Patience2021-07-091-0/+1
| | | | | | | | | | | | * lib.c (separate): New function. * lib.h (separate): Declared. * eval.c (eval_init): Register separate intrinsic. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
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