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* New exception type: system-error.Kaz Kylheku2015-08-051-0/+1
| | | | | | | | | * lib.c (system_error_s): New symbol variable. (obj_init): Initialize new variable. * lib.h (system_error_s): Declared. * unwind.c (uw_init): Register system-error exception type.
* * eval.c (bind_args): Use new ~! for proper indentationKaz Kylheku2015-08-041-4/+4
| | | | | | | of multi-line context form. (apply): Use ~! for proper indentation of function code. * unwind.c (uw_throw): Use ~! for proper indentation of code.
* * eval.c (force): Default the new second argument of source_loc_str.Kaz Kylheku2015-08-041-4/+2
| | | | | | | | | | | | | | | | | | | (eval_error): Derive location of error from the last_form_evaled, if form doesn't have it. (eval_init): Re-register source-loc-str as binary with an optional arg. * match.c (debuglf, sem_error, file_err, typed_error): Default new argument of source_loc_str. * parser.h (source_loc_str): Declaration updated. * parser.l (source_loc_str): Take second argument which specifies alternative value if the source loc info is not found. * unwind.c (uw_throw): Simplify code thanks to source_loc_str default argument. * txr.1: Document new argument of source-loc-str.
* Improved error reporting, particularly for macro expansion.Kaz Kylheku2015-02-211-2/+8
| | | | | | | | | | | | | | | | | | | * eval.c (last_form_expanded): New variable. (do_expand): New static function; contains previous expand function. (expand): Becomes a wrapper for do_expand, with re-entry counting. (eval_init): GC-protect last_form_expanded. * eval.h (last_form_expanded): Declared. * parser.l (regex_parse, lisp_parse): Just use a simple word for the name of the regex or string parse location, not the entire expression itself. * unwind.c (uw_throw): Check whether expansion was going on when the unhandled exception was thrown and print additional information.
* * unwind.c (uw_throw): Detect invalid re-entry and bail.Kaz Kylheku2015-02-061-0/+7
| | | | | Cautiously, we use fprintf rather than our streams system, in case some problem with the streams is involved in this mess.
* * unwind.c (uw_throw): Put a txr: prefix on the unhandledKaz Kylheku2015-02-061-1/+1
| | | | exception in early initialization message.
* Slight internal representation change of string-only exceptions.Kaz Kylheku2015-02-061-8/+15
| | | | | | | | | | | | | | | | | | | | | | | | | One upshot of all this is that (throw 'foo "msg") now does exactly the same thing as (throwf 'foo "msg"). A message-only exception really is a one-string exception argument list ("message ..."), like the documentation says. * unwind.h (struct uw_catch): exception member renamed to args. (uw_catch): Macro follows structure member rename. * eval.c (op_catch): Removed now unnecessary kludge of turning non-list exception argument list into a one-element argument list. * match.c (v_try): Similar hack to the one in op_catch removed here. * unwind.c (uw_unwind_to_exit_point, uw_push_catch): Follows rename of exception member. (uw_throw): The exception parameter is renamed to args. The kludge removed from op_catch re-appears here, because numerous calls to uw_throw just pass a string as args. It's less of a kludge here because this is the master entry point to exception processing, and it straightens out the representation right away. The exception arguments or message are printed in a clearer way.
* * unwind.c (unhandled_hook_s): New static variable.Kaz Kylheku2015-02-061-2/+29
| | | | | | | | | | | | | | | | | | | (uw_throw): In the unhandled case, check if *unhandled-hook* variable has a function, and use it instead of the default logic. If it's not a function, abort with an error message. Clear it so that if the hook function re-enters this code, it will not be used. Always exit now on unhandled exceptions; do not abort. (uw_late_init): New function. * unwind.h (uw_late_init): Declared. * lib.c (init): Call uw_late_init. * txr.1: Documented *unhandled-hook*. * genvim.txr: Scan the unwind.c file, since it has a reg_var now. * tl.vim, txr.vim: Updated.
* Update copyright notices from 2014 to 2015.Kaz Kylheku2015-02-011-1/+1
| | | | | | | | | | | * arith.c, arith.h, combi.c, combi.h, debug.c, debug.h, eval.c, eval.h, filter.c, filter.h, gc.c, gc.h, hash.c, hash.h, lib.c, lib.h, match.c, match.h, parser.h, rand.c, rand.h, regex.c, regex.h, signal.c, signal.h, stream.c, stream.h, sysif.c, sysif.h, syslog.c, syslog.h, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h: Update. * LICENSE, METALICENSE: Likewise.
* * Makefile: Removing trailing spaces.Kaz Kylheku2014-10-241-1/+0
| | | | | | | | | | (GREP_CHECK): New macro. (enforce): Rewritten using GREP_CHECK, with new checks. * arith.c, combi.c, debug.c, eval.c, filter.c, gc.c, hash.c, lib.c, * lib.h, match.c, parser.l, parser.y, rand.c, regex.c, signal.c, * signal.h, stream.c, syslog.c, txr.c, unwind.c, utf8.c: Remove trailing spaces.
* Converting cast expressions to macros that are retargettedKaz Kylheku2014-10-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | to C++ style casts when compiling as C++. * lib.h (strip_qual, convert, coerce): New casting macros. (TAG_MASK, tag, type, wli_noex, auto_str, static_str, litptr, num_fast, chr, lit_noex, nil, nao): Use cast macros. * arith.c (mul, isqrt_fixnum, bit): Use cast macros. * configure (INT_PTR_MAX): Define using cast macro. * debug.c (debug_init): Use cast macro. * eval.c (do_eval, expand_macro, reg_op, reg_mac, eval_init): Use cast macros. * filter.c (filter_init): Use cast macro. * gc.c (more, mark_obj, in_heap, mark, sweep_one, unmark): Use cast macros. * hash.c (hash_double, equal_hash, eql_hash, hash_equal_op, hash_hash_op, hash_print_op, hash_mark, make_hash, make_similar_hash, copy_hash, gethash_c, gethash, gethash_f, gethash_n, remhash, hash_count, get_hash_userdata, set_hash_userdata, hash_iter_destroy, hash_iter_mark, hash_begin, hash_uni, hash_diff, hash_isec): Use cast macros. * lib.c (code2type, chk_malloc, chk_malloc_gc_more, chk_calloc, chk_realloc, chk_strdup, num, c_num, string, mkstring, mkustring, upcase_str, downcase_str, string_extend, sub_str, cat_str, trim_str, c_chr, vector, vec_set_length, copy_vec, sub_vec, cat_vec, cobj_print_op, obj_init): Likewise. * match.c (do_match_line, hv_trampoline, match_files, dir_tables_init): Likewise. * parser.l (grammar): Likewise. * parser.y (parse): Likewise. * rand.c (make_state, make_random_state, random_fixnum, random): Likewise. * regex.c (CHAR_SET_L2_LO, CHAR_SET_L2_HI, CHAR_SET_L1_LO, CHAR_SET_L1_HI, CHAR_SET_L0_LO, CHAR_SET_L0_HI, L0_full, L0_fill_range, L1_full, L1_fill_range, L1_contains, L1_free, L2_full, L2_fill_range, L2_contains, L2_free, L3_fill_range, L3_contains, L3_free, char_set_create, char_set_cobj_destroy, nfa_state_accept, nfa_state_empty, nfa_state_single, nfa_state_wild, nfa_state_set,
* * eval.c (eval_init): Update registration of lisp-parse and readKaz Kylheku2014-09-021-0/+1
| | | | | | | | | | | | | | | | | | | | to account for new parameter. * lib.c (syntax_error_s): New symbol_variable. (obj_init): New symbol variable initialized. * lib.h (syntax_error_s): Declared. * parser.h (lisp_parse): Declaration updated. * parser.l (lisp_parse): Takes third parameter. * txr.1: Third parameter of read described. * txr.c (txr_main): Pass colon_k to third parameter of lisp_parse to obtain exception throwing behavior. * unwind.c (uw_init): Register syntax-error as subtype of error.
* * Makefile, arith.c, arith.h, combi.c, combi.h, configure, debug.c,Kaz Kylheku2014-07-231-16/+16
| | | | | | | | debug.h, eval.c, eval.h, filter.c, filter.h, gc.c, gc.h, hash.c, hash.h, lib.c, lib.h, match.c, match.h, parser.h, parser.l, parser.y, rand.c, rand.h, regex.c, regex.h, signal.c, signal.h, stream.c, stream.h, syslog.c, syslog.h, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h: Synchronize license header with LICENSE.
* * configure: Add a check, in the case that we cannot make anKaz Kylheku2014-07-221-0/+5
| | | | | | | | | | | | | | | | | executable, whether this is due to being required to use C99. For instance, the Solaris environment requires compilation using the C99 dialect if _XOPEN_SOURCE is set to 600 or higher. * debug.c: When compiling as C99, we have to obey the special C99 conventions for instantiating inline functions. * hash.c: Likewise. * lib.c: Likewise. * parser.y: Likewise. * unwind.c: Likewise.
* The dumping of bindings and printing of false must nowKaz Kylheku2014-06-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | be explicitly requested by the -B option. * match.c (opt_nobindings): Variable removed. (opt_print_bindings): New variable. (extract): Print bindings or "false" if opt_print_bindings is true. * stream.c (output_produced): Variable removed. (stdio_put_string, stdio_put_char, stdio_put_byte): Remove update of output_produced. * stream.h (output_produced): Declaration removed. * txr.1: Documentation updated. * txr.c (txr_main): Option 'b' does nothing. 'B', 'l', 'a', and '--lisp-bindings' set opt_print_bindings to 1. * txr.h (opt_nobindings): Declaration removed. (opt_print_bindings): Declared. * unwind.c (uw_throw): When exiting due to a query error or file error, print false when opt_print_bindings is true.
* Change to how locations are passed around, for the sake of generationalKaz Kylheku2014-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GC. The issue being solved here is the accuracy of the gc_set function. The existing impelmentation is too conservative. It has no generation information about the memory location being stored, and so it assumes the worst: that it is a location in the middle of a gen 1 object. This is sub-optimal, creating unacceptable pressure against the checkobj array and, worse, as a consequence causing unreachable gen 0 objects to be tenured into gen 1. To solve this problem, we replace "val *" pointers with a structure of type "loc" which keeps track of the object too, which lets us discover the generation. I tried another approach: using just a pointer with a bitfield indicating the generation. This turned out to have a serious issue: such a bitfield goes stale when the object is moved to a different generation. The object holding the memory location is in gen 1, but the annotated pointer still indicates gen 0. The gc_set function then makes the wrong decision, and premature reclamation takes place. * combi.c (perm_init_common, comb_gen_fun_common, rcomb_gen_fun_common, rcomb_list_gen_fun): Update to new interfaces for managing mutation. * debug.c (debug): Update to new interfaces for managing mutation. Avoid loc variable name. * eval.c (env_fbind, env_fbind): Update to new interfaces for managing mutation. (lookup_var_l, dwim_loc): Return loc type and update to new interfaces. (apply_frob_args, op_modplace, op_dohash, transform_op, mapcarv, mappendv, repeat_infinite_func, repeat_times_func): Update to new interfaces for managing mutation. * eval.h (lookup_var_l): Declaration updated. * filter.c (trie_add, trie_compress, trie_compress_intrinsic, * build_filter, built_filter_from_list, filter_init): Update to new * interfaces. * gc.c (gc_set): Rewritten to use loc type which provides the exact generation. We do not need the in_malloc_range hack any more, since we have the backpointer to the object. (gc_push): Take loc rather than raw pointer. * gc.h (gc_set, gc_push): Declarations updated. * hash.c (struct hash): The acons* functions use loc instead of val * now. (hash_equal_op, copy_hash, gethash_c, inhash, gethash_n, pushhash, Change to how locations are passed around, for the sake of generational GC. The issue being solved here is the accuracy of the gc_set function. The existing impelmentation is too conservative. It has no generation information about the memory location being stored, and so it assumes the worst: that it is a location in the middle of a gen 1 object. This is sub-optimal, creating unacceptable pressure against the checkobj array and, worse, as a consequence causing unreachable gen 0 objects to be tenured into gen 1. To solve this problem, we replace "val *" pointers with a structure of type "loc" which keeps track of the object too, which lets us discover the generation. I tried another approach: using just a pointer with a bitfield indicating the generation. This turned out to have a serious issue: such a bitfield goes stale when the object is moved to a different generation. The object holding the memory location is in gen 1, but the annotated pointer still indicates gen 0. The gc_set function then makes the wrong decision, and premature reclamation takes place. * combi.c (perm_init_common, comb_gen_fun_common, rcomb_gen_fun_common, rcomb_list_gen_fun): Update to new interfaces for managing mutation. * debug.c (debug): Update to new interfaces for managing mutation. Avoid loc variable name. * eval.c (env_fbind, env_fbind): Update to new interfaces for managing mutation. (lookup_var_l, dwim_loc): Return loc type and update to new interfaces. (apply_frob_args, op_modplace, op_dohash, transform_op, mapcarv, mappendv, repeat_infinite_func, repeat_times_func): Update to new interfaces for managing mutation. * eval.h (lookup_var_l): Declaration updated. * filter.c (trie_add, trie_compress, trie_compress_intrinsic, * build_filter, built_filter_from_list, filter_init): Update to new * interfaces. * gc.c (gc_set): Rewritten to use loc type which provides the exact generation. We do not need the in_malloc_range hack any more, since we have the backpointer to the object. (gc_push): Take loc rather than raw pointer. * gc.h (gc_set, gc_push): Declarations updated. * hash.c (struct hash): The acons* functions use loc instead of val * now. (hash_equal_op, copy_hash, gethash_c, inhash, gethash_n, pushhash,
* * lib.c (assert_s): New global variable.Kaz Kylheku2014-03-061-0/+1
| | | | | | | | | | | | | | | (obj_init): Intern assert symbol, store in assert_s. * lib.h (assert_s): Declared. * match.c (typed_error, v_assert, h_assert): New static functions. (dir_tables_init): Register v_assert and h_assert. Register assert_s as non-data-matching directive. * unwind.c (uw_init): Register assert as a subtype of error. * txr.1: Describe assert.
* In the spirit of the previous hack, here is another hack toKaz Kylheku2014-02-161-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | alleviate a long-standing pain: when an exception happens in TXR's library somewhere, the program dies without leaving a clue about what code was being evaluated when that happened. What we can do is have the evaluator publish the most recent compound form it has processed by stashing it in a variable. Then when an unhandled exception occurs, we can peek at that and try to pull out source location info. * eval.c (last_form_evaled): New variable. (do_eval): When evaluating a compound form, stash it in last_form_evaled. (eval_init): Protect last_form_evaled from gc. * eval.h (last_form_evaled): Declared. (eval_error_s): Existing variable declared. * unwind.c: Has to include "eval.h" for the above variable and "parser.h" for the source_loc function. (uw_throw): When an exception is unhandled, if last_form_evaled has source info, add it to the diagnostic. But not if the exception is eval-error; because errors from the evaluators already have the info.
* First cut at signal handling support.Kaz Kylheku2013-12-121-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Makefile (OBJS-y): Include signal.o if have_posix_sigs is "y". * configure (have_posix_sigs): New variable, set by detecting POSIX signal stuff. * dep.mk: Regenerated. * arith.c, debug.c, eval.c, filter.c, hash.c, match.c, parser.y, parser.l, rand.c, regex.c, syslog.c, txr.c, utf8.c: Include new signal.h header, now required by unwind, and the <signal.h> system header. * eval.c (exit_wrap): New function. (eval_init): New functions registered as intrinsics: exit_wrap, set_sig_handler, get_sig_handler, sig_check. * gc.c (release): Unused functions removed. * gc.h (release): Declaration removed. * lib.c (init): Call sig_init. * stream.c (set_putc, se_getc, se_fflush): New static functions. (stdio_put_char_callback, stdio_get_char_callback, stdio_put_byte, stdio_flush, stdio_get_byte): Use new functions to enable signals when blocked on I/O. (tail_strategy): Allow signals across sleep. (pipev_close): Allow signals across waitpid. (se_pclose): New static function. (pipe_close): Use new function to enable signals across pclose. * unwind.c (uw_unwind_to_exit_point): use extended_longjmp instead of longjmp. * unwind.h (struct uw_block, struct uw_catch): jb member changes from jmp_buf to extended_jmp_buf. (uw_block_begin, uw_simple_catch_begin, uw_catch_begin): Use extended_setjmp instead of setjmp. * signal.c: New file. * signal.h: New file.
* Bumping copyrights to 2014 and expressing them as year ranges.Kaz Kylheku2013-12-101-1/+1
| | | | Fixing some errors in copyright comments.
* Ouch! Turns out the code base has numerous unintendedKaz Kylheku2013-10-241-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | deviations from C90, like mixed declations and statements. GCC doesn't diagnose these without the --pedantic flag. * configure: GCC's --ansi flag should be spelled -ansi. * lib.c (split_str, obj_print): Reorder declaration before statements. (make_sym): Fix similar problem by eliminating a statement. (funcall1, funcall2, funcall3, funcall4): Use assignment to initialize local array with non-constant elements. This is actually good for performance because we only initialize those parts of the array that we use. * lib.h (struct func): Change functype member to unsigned, since enum-typed bitfields are a GCC extension. * match.c (ml_all, mf_all): Use assignments to initialize local struct with non-constants. (do_txeval, v_collect): Slightly revise unwinding macrology with help of new macros to avoid mixing declarations and statements. (spec_bind): Removed spurious semicolon from macro expansion. (v_gather): Reorder two lines to avoid mixed decls and statements. (match_filter): Move declaration of ret a few lines up, ahead of statements. * unwind.c (uw_pop_until): New function. * unwind.h (uw_pop_until): Declared. (uw_mark_frame, uw_fast_return): New macros.
* Bunch of fixes.Kaz Kylheku2012-04-051-1/+3
| | | | | | | | | | | | | | | | | * gc.c (gc_mutated): Return the value. * gc.h (gc_mutated): Declaration updated. * hash.c (remhash): Fix unsafe assignment to use set macro. * lib.c (sort): Fix wrong use of mut macro on the list before it is sorted rather than after. * lib.h (mut): Trivial version of macro updated to return argument. * unwind.c (uw_init): The toplevel environment's match_context should be gc_protected. Though this is probably not used, which is why it has not been a problem.
* * configure: Support a gen-gc configuration variable whichKaz Kylheku2012-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | causes CONFIG_GEN_GC to be defined as 1 in config.h. * eval.c (op_defvar, dwim_loc, op_modplace, transform_op): Handle mutating assignments via set macro. (op_dohash): Inform gc about mutated variables. TODO here. * filter.c (trie_add, trie_compress): Handle mutating assignments via set macro. * gc.c (BACKPTR_VEC_SIZE, FULL_GC_INTERVAL): New preprocessor symbols. (backptr, backptr_idx, partial_gc_count, full): New static variables. (make_obj): Initialize generation to zero. (gc): Added logic for deciding between full and partial gc. (gc_set, gc_mutated): New functions. * gc.h (gc_set, gc_mutated): Declared. * hash.c (hash_mark): Changed useless use of vecref_l to vecref. (gethash_f): Use set when assigning through *found since it is a possible mutation. * lib.c (car_l, cdr_l, vecref_l): Got rid of loc macro uses. Using the value properly is going to be the caller's responsibility. (push): push may be a mutation, so use set. (intern): Uset set to mutate a hash entry. (acons_new_l, aconsq_new_l): Use set when replacing *list. * lib.h (PTR_BIT): New preprocessor symbol. (obj_common): New macro for defining common object fields. type_t is split into two bitfields, half a pointer wide, allowing for generation to be represented. (struct any, struct cons, struct string, struct sym, struct package, struct func, struct vec, struct lazy_cons, struct cobj, struct env, struct bignum, struct flonum): Use obj_common macro to defined common fields. (loc): Macro removed. (set, mut): Macros conditionally defined for real functionality. (list_collect, list_collect_nconc, list_collect_append): Replace mutating operations with set. * match.c (dest_set, v_cat, v_output, v_filter): Replace mutating operations with set. * stream.c (string_in_get_line, string_in_get_char, strlist_out_put_string, strlist_out_put_char): Replace mutating operations with set. * unwind.c (uw_register_subtype): Replace mutating operation with set.
* If one of the blocks which are subordinate to a @(trailer)Kaz Kylheku2012-03-311-1/+7
| | | | | | | | | | | | | | | | | | | | | happen to request a successful termination by invoking @(accept) the position must not advance into the trailer material. * match.c (v_trailer): Added an unwind protect which detects that an accept is taking place and adjusts the return value to restrict the input position at the point given to trailer. (accept_fail): Use uw_block_return_proto instead of uw_block_return and pass the symbol as the protocol identifier. * unwind.c (uw_current_exit_point): New function. (uw_block_return): Function renamed to uw_block_return_proto; takes new parameter which is stored in the block structure. * unwind.h (struct uw_block): New member, protocol. (uw_block_return): Becomes an inline wrapper for uw_block_return_proto. (uw_block_return_proto, uw_current_exit_point): Declared. * txr.1: Interaction between @(trailer) and @(accept) documented.
* * arith.c: Updated copyright year.Kaz Kylheku2012-02-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * arith.h: Likewise. * debug.c: Added copyright header. * debug.h: Updated copyright year. * eval.c: Likewise. * eval.h: Likewise. * filter.c: Likewise. * filter.h: Likewise. * gc.c: Likewise. * gc.h: Likewise. * hash.c: Likewise. * hash.h: Likewise. * lib.c: Likewise. * lib.h: Likewise. * match.c: Likewise. * match.h: Likewise. * parser.h: Likewise. * regex.c: Likewise. * regex.h: Likewise. * stream.c: Likewise. * stream.h: Likewise. * txr.c: Likewise, and e-mail address. * txr.h: Updated copyright year. * unwind.c: Likewise. * unwind.h: Likewise.
* Introducing optional arguments.Kaz Kylheku2012-02-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * debug.c (help, show_bindings): put_string arguments reversed. * eval.c (bind_args): Support colon notation in interpreted function lambda lists for optional arguments. Improved error checking. (apply): Allow optional arguments to be left out. (dwim_loc): Reversed arguments to replace_str, replace_vec, replace_list. (eval_init): Numerous intrinsics now have arguments that are optional. New function rand introduced which reverses arguments relative to random. New intrinsic function hash introduced for alternative construction of hashes. * gc.c (sweep): Reversed arguments to put_char. * hash.c (weak_keys_k, weak_vals_k, equal_based_k): New keyword symbol variables. (hashv): New function. (hash_init): Intern new symbols. * hash.h (weak_keys_k, weak_vals_k, equal_based_k, hashv): Declared. * lib.c (colon_k): New keyword symbol variable. (replace_list, replace_str, replace_vec): Arguments rearranged. (tree_find): testfun becomes optional argument. (int_str): base becomes optional argument. (func_f0, func_f1, func_f2, func_f3, func_f4, func_n0, func_n1, func_n2, func_n3, func_n4, func_f0v, func_f1v, func_f2v, func_f3v, func_f4v, func_n0v, func_n1v, func_n2v, func_n3v, func_n4v, func_interp): Initialize optargs to zero. (func_n0o, func_n1o, func_n2o, func_n3o, func_n4o): New functions. (cobj_print_op): Reversed arguments to put_string. (find): testfun and keyfun become optional arguments. (replace): Parameters rearranged and arguments rearranged in calls to replace_list, replace_str and replace_vec. (obj_init): colon_k initialized. (obj_print, obj_pprint): Arguments reversed, and stream defaults to std_output. Arguments reversed in calls to put_char and put_string. (dump): Arguments reversed in call to put_char. * lib.h (struct func): sizes of minparam, fixparam bitfields adjusted. New bitfield optargs. New unnamed bitfield added so the previous ones add up to 16 bits. (colon_k): Declared. (func_n0o, func_n1o, func_n2o, func_n3o, func_n4o): Declared. (replace_list, replace_str, replace_vec, replace): Declarations updated. * match.c (debuglf, dump_shell_string, dump_byte_string, dump_var, do_output_line, extract): Reversed arguments to put_char and
* TXR Lisp gets exception handling.Kaz Kylheku2012-02-161-0/+16
| | | | | | | | | | | | | | | | | * eval.c (op_catch, expand_catch_clause, expand_catch): New static functions. (expand): Handle catch operator. (eval_init): Added catch operator to op_table, and registered new functions throw, throwf and error. * txr.1: Documented catch operator and created stub section for throw, throwf and error. * txr.vim: Updated. * unwind.c (uw_throwfv, uw_errorfv): New functions. * unwind.h (uw_throwfv, uw_errorfv): Declared.
* Task #11486: continuation. Now able to @(skip) throughKaz Kylheku2012-02-111-0/+5
| | | | | | | | | | | | | | | | | | | | a large file horizontally under @(freeform) in constant memory. Position reporting is incorrect. * match.c (match_line_ctx): New member, base. (ml_all): Initialize new member to zero. (consume_prefix): New static function. (do_match_line): New static function, contains implementation of match_line. Calls consume_prefix. (match_line): Becomes a wrapper for do_match_line. (search_form, h_skip): Call consume_prefix. (freeform_prepare): New function. External to avoid inlining. (v_freeform): Uses do_match_line, to down context by reference, and also refactored to avoid spurious retention of c->data. * unwind.c (uw_push-block, uw_push_env, uw_push_debug, uw_push_catch): Zero out the structure, otherwise the unused fields can cause spurious retention.
* * debug.c (help): Added missing help for w command.Kaz Kylheku2012-01-211-3/+3
| | | | | | | | | | | | | | | | | | | | (debug): In backtrace, show the renaming pairs for unbound variables (up_p_a_pairs) if they are present. * debug.h (debug_begin): Renamed to debug_frame. * eval.c (eval): Wrap debug_begin/debug_end around function dispatch, so TXR Lisp functions are included in backtraces. * match.c (h_fun): Follow rename of debug_begin to debug_frame. Pass in evaluated args, not the original ones. (v_fun): Likewise. * unwind.c (uw_push_debug): bindings argument renamed to env. Bugfix: args argument was being assigned to ub_p_a_pairs. * unwind.h (struct uw_debug): Member bindings renamed to env. (uw_push_debug): Declaration updated.
* Bug #35137Kaz Kylheku2011-12-201-9/+0
| | | | | | | | | | | | | | * unwind.c (uw_unwind_to_exit_point): When jumping to a catch frame, do not mark it invisible. * unwind.h (uw_catch): Flip the matches to nil so that this catch frame can no longer be identified as an unwind point by uw_throw, and thus will not be re-entered for the purposes of handling an exception. It remains visible for the purposes of running the clean up code. (uw_unwind): Prior to executing cleanup forms, flip the visibility to 0. This means that the frame will no longer be re-entered for any reason.
* * eval.c (lookup_var, lookup_fun): Reversing assoc arguments.Kaz Kylheku2011-12-071-5/+5
| | | | | | | | | | | | | | | | | | | | | | | (eval_init): New intrinsics. * hash.c (struct_hash): assoc_fun parameters reversed. (gethash, gethash_f, gethash_n): Likewise. * lib.c (assoc, assq): Reversing parameters. (find_package, acons_new, acons_new_l, aconsq_new): Reversing arguments to assoc adn assq. * lib.h (assoc, assq): Declarations updated. * match.c (dest_set, dest_bind, h_var, h_coll, h_parallel, h_fun, subst_vars, do_txeval, v_next, v_parallel, v_gather, v_collect, v_flatten, v_cat, v_output, v_filter, f_fun, match_funcall): Reversing arguments to assoc. * unwind.c (uw_get_func, uw_exception_subtype_p, uw_register_subtype): Reversing arguments to assoc. * txr.1: Blank sections created for new functions.
* Task #11436Kaz Kylheku2011-11-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Lisp interpreter added. * gc.c (finalize, mark_obj): Handle ENV objects. * hash.c (struct hash): acons_new_l_fun function pointer order of arguments change. (equal_hash): Handle ENV. (make_hash, gethash_l): Use cobj_handle for type safety. Follow change in acons_new_l. (gethash, gethash_f, remhash, hash_count, hash_get_userdata, hash_set_userdata, hash_next): Use cobj_handle. (gethash_n): New function. * hash.h (gethash_n): Declared. * lib.c (env_s): New symbol variable. (code2type, equal): Handle ENV. (plusv, minusv, mul, mulv, trunc, mod, gtv, ltv, gev, lev, maxv, minv, int_str): New functions. (rehome_sym): New static function. (func_f0, func_f1, func_f2, func_f3, func_f4, func_n0, func_n1, func_n2, func_n3, func_n4): Initialize new fields of struct func. (func_f0v, func_f1v, func_f2v, func_f3v, func_f4v, func_n0v, func_n1v, func_n2v, func_n3v, func_n4v, func_interp): New functions. (apply): Function removed: sanely re-implemented in new eval.c file. (funcall, funcall1, funcall2, funcall3, funcall4): Handle variadic and interpreted functions. (acons, acons_new, acons_new_l, aconsq_new, aconsq_new_l): Reordered arguments for compatibility with Common Lisp acons. (obj_init): Special hack to prepare hash_s symbol, which is needed for type checking inside the hash table funtions invoked by make_package, at a time when the symbol is not yet interned. Initialize new env_s variable. (obj_print, obj_pprint): Handle ENV. Fix confusing rendering of of function type. (init): Call new function eval_init. * lib.h (enum type): New enumeration member ENV. (struct func): functype member changed to bitfield. New bitfied members minparam and variadic. New members in f union: f0v, f1v, f2v, f3v, f4v, n0v, n1v, n2v, n3v, n4v. (struct env): New type. (union obj): New member e of type struct env. (env_s): Variable declared. (plusv, minusv, mul, mulv, trunc, mod, gtv, ltv, gev, lev, maxv, minv,
* Adding a debugger. This is an experimental prototype.Kaz Kylheku2011-11-131-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Makefile (OBJS): New object file debug.o. * dep.mk: Updated. * match.c (h_fun): Use debug_begin and debug_end macros to set up a debug frame for backtracing. (match_line, match_files): Call debug_check to give debugger a chance to instrument call. (v_fun): Use debug_begin and debug_end macros to set up a debug frame for backtracing. Call debug_check to give debugger a chance to instrument call. * stream.c (struct strm_ops): New function pointer, flush. (stdio_maybe_write_error): Wrong word in error message corrected. (stdio_flush): New static function. (stdio_ops, pipe_ops): New function entered into tables. (flush_stream): New function. * stream.h (flush_stream): Declared. * txr.c (help): New options documented. (main): call to debug_init added. New debug options parsed and opt_debugger set accordingly. * unwind.c (uw_push_debug, uw_current_frame): New function. * unwind.h (uw_frtype): New enumeration member UW_DBG. (struct uw_debug): New frame variant. (union uw_frame): New member, db. (uw_push_debug, uw_current_frame): Declared, * debug.c: New file. * debug.h: New file.
* * filter.c (function_filter): New function.Kaz Kylheku2011-10-241-0/+14
| | | | | | | | | | | | | | | | | | | | | | (get_filter): Handle (fun ...) syntax. * match.c (v_bind): Establish dynamic environment frame around dest_bind, and stash the bindings there so filters can have access to the bindings. (v_output): Likewise, around do_output calls. (v_fun): New function. (match_files): Function handling broken out into v_fun. (match_funcall): New function. * match.h (match_funcall): Declared. * unwind.c (uw_push_env): Initialize match_context. (uw_get_match_context, uw_set_match_context): New functions. * unwind.h (struct uw_dynamic_env): New member, match_context. (uw_get_match_context, uw_set_match_context): Declared. * txr.1: Documented function filters.
* Turning attention to some plumbing.Kaz Kylheku2011-10-241-18/+25
| | | | | | | | | | | | | * unwind.c (uw_env_stack): New static variable. (uw_unwind_to_exit_point): Maintain correct uw_env_stack during unwinding. (uw_find_env): Just retrieve the env stack pointer; no search. (uw_push_env): Store a pointer to the previous environmental frame and just initialize the bindings to nil. No need to cons up a copy of the bindings from the previous frame. (uw_get_func): Perform a search through the environment stack. * unwind.h (struct uw_dynamic_env): New member, up_env.
* * LICENSE, Makefile, configure, filter.c, filter.h, gc.c, gc.h, hash.c,Kaz Kylheku2011-10-041-1/+1
| | | | | | hash.h, lib.c, lib.h, match.c, match.h, parser.h, parser.l, parser.y, regex.c, regex.h, stream.c, stream.h, txr.1, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h: Updated e-mail address.
* * LICENSE, Makefile, configure, gc.c, gc.h, hash.c, hash.h, lib.c,Kaz Kylheku2011-09-231-1/+1
| | | | | | lib.h, match.c, match.h, parser.h, parser.l, parser.y, regex.c, regex.h, stream.c, stream.h, txr.1, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h: Updated copyright year.
* Bump copyrights to 2010.Kaz Kylheku2010-10-051-1/+1
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* Code cleanup. All private functions static. Private stuffKaz Kylheku2009-11-281-1/+1
| | | | in regex module not exposed in header. Etc.
* Renaming global variables that denote symbols, such that theyKaz Kylheku2009-11-241-15/+17
| | | | have a _s suffix.
* Improving portability. It is no longer assumed that pointersKaz Kylheku2009-11-231-0/+1
| | | | | | | | can be converted to a type long and vice versa. The configure script tries to detect the appropriate type to use. Also, some run-time checking is performed in the streams module to detect which conversions specifier strings to use for printing numbers.
* * unwind.c (uw_throw): If streams are not initialized,Kaz Kylheku2009-11-201-0/+5
| | | | | | we have an unhandled exception too early in initialization. Use C stream to print an error message and abort. Using the nil stream variable will just cause a recursion bomb.
* Changing ``obj_t *'' occurences to a ``val'' typedef. (Ideally,Kaz Kylheku2009-11-201-23/+23
| | | | | we wouldn't have to declare object variables at all, so why use an obtuse syntax to do so?)
* Big round of changes to switch the code base to use the streamKaz Kylheku2009-11-161-36/+10
| | | | | | | | | | | | | | | | | abstraction instead of directly using C standard I/O, to eliminate most uses of C formatted I/O, and fix numerous bugs, such variadic argument lists which lack a terminating ``nao'' sentinel. Bug 28033 is addressed by this patch, since streams no longer provide printf-compatible formatting. The native formatter is extended with some additional capabilities to take over. The work on literal objects is expanded and they are now used throughout the code base. Fixed bad realloc in string output stream: reallocating by number of wide chars rather than bytes.
* Continuing wchar_t conversion. Making sure all stdio callsKaz Kylheku2009-11-121-2/+2
| | | | | use wide character functions so that there is no illicit mixing. (But the goal is to replace this usage with txr streams).
* Big conversion to wide characters and UTF-8 support.Kaz Kylheku2009-11-111-10/+10
| | | | | | | | | This is incomplete. There are too many dependencies on wide character support from the C stream I/O library, and implicit use of some encoding which may not be UTF-8. The regex code does not handle wide characters properly. Character type is still int in some places, rather than wchar_t. Test suite passes though.
* Throw exception on stream error during close, or I/O operations. ThisKaz Kylheku2009-11-061-0/+1
| | | | | | is needed for pipes that terminate abnormally or return failed termination. Pipe and stdio streams have an extra description field so they are printed in a readable way.
* Bug ID 27895: Calls to protect have an argument list terminatedKaz Kylheku2009-11-011-1/+1
| | | | by the integer constant 0 rather than a proper null pointer constant.
* txr-017 2009-10-17txr-017Kaz Kylheku2017-07-311-8/+21
| | | | Note: Version 016 ChangeLog message incorrect.
* txr-016 2009-10-16txr-016Kaz Kylheku2017-07-311-6/+9
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