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* Changes for FreeBSD 9.Kaz Kylheku2014-06-041-0/+11
| | | | | | | | | * configure: Use pointer-based test for timegm, because -Werror=implicit-function-declaration does not work in the gcc 4.2 used on FreeBSD 9. * parser.l: Check for Flex 2.5.9 and earlier which don't have yylex_destroy. Thanks to Marcus Breiing.
* * configure: Changes for building on Solaris 10 using theKaz Kylheku2014-06-041-0/+10
| | | | | | | | | /usr/bin/xpg4/sh shell. Solaris' /bin/sh does not like test -e. Adding break to the new shell existence testing loop so we use the first shell in the list. Solaris wants _XOPEN_SOURCE=500 to reveal certain functions. Fix breakage in the make utility detection, and also use the $make variable everywhere instead of make.
* * configure: Defend against legacy, non-POSIX /bin/sh implementations.Kaz Kylheku2014-06-041-0/+8
| | | | | | | We boostrap using #!/bin/sh, but try to detect a better shell and re-execute the script with that shell. Furthermore, we now set up the SHELL variable in config.make, so that make uses that shell for executing build recipes.
* * eval.c (eval_lisp1): Function removed.Kaz Kylheku2014-06-031-0/+7
| | | | | | (op_dwim, dwim_locs): Removing silly logic of separately calling eval_lisp1 on the functor, and eval_lisp1_args on its arguments, since lisp1 evaluation treats all position the same way.
* Documenting the return value of rplaca and rplacd, and changingKaz Kylheku2014-06-031-0/+13
| | | | | | | | | | | | it to be the cell, rather than the new value. * eval.c (transform_op): Fix use of rplacd that uses return value. (force): Likewise. * lib.c (rplaca, rplacd): Return cons. (rem_lazy_rec, obj_init): Fix use of rplacd that uses return value. * txr.1: Documented.
* The call operator should be a function!Kaz Kylheku2014-05-201-0/+10
| | | | | | | | * eval.c (call): New static function. (eval_args, op_call): Static functions removed. (eval_init): call_s registered as operator rather than function. * txr.1: Updated.
* Version 89txr-89Kaz Kylheku2014-05-101-0/+14
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* String type related bugfixes: neglecting to handle all three kinds inKaz Kylheku2014-05-101-0/+16
| | | | | | | | | | | | | | | some places. In particular, the test case echo : | ./txr -c '@a:@a' - breaks because of neglected LIT in do_match_line. * arith.c (tofloat, toint): Handle LIT type in switch. * lib.c (ref, refset, replace, update): Handle LSTR type. * match.c (do_match_line, do_output_line): Handle LSTR and LIT objects in switch.
* * stream.c (get_line, get_char, get_byte): Fix outdated, incorrectKaz Kylheku2014-04-141-0/+5
| | | | optional argument defaulting logic.
* * eval.c, gc.c, rand.c, regex.c, signal.c: Remove inclusion of unneededKaz Kylheku2014-04-131-0/+5
| | | | headers.
* * eval.c (make_var_shadowing_env): Remove unnecessary test forKaz Kylheku2014-04-111-0/+5
| | | | colon symbol.
* * eval.c (rangev_func, range_star_v_func): Use numericKaz Kylheku2014-04-081-0/+5
| | | | equivalence comparison for end test, rather than eql.
* * lib.c (eql): Bugfix: not handling floating-point types!Kaz Kylheku2014-04-071-0/+6
| | | | | Two objects which are equal floating-point values must be considered eql even if they are distinct objects (not eq).
* Version 88txr-88Kaz Kylheku2014-04-041-2/+17
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* * gc.c (CHECKOBJ_VEC_SIZE, FRESHOBJ_VEC_SIZE): IncreaseKaz Kylheku2014-03-291-0/+6
| | | | | to 8 * HEAP_SIZE from 2 * HEAP_SIZE to reduce frequency of garbage collections.
* * HACKING: Updating generational GC notes in light of changes.Kaz Kylheku2014-03-291-0/+4
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* Change to how locations are passed around, for the sake of generationalKaz Kylheku2014-03-291-0/+117
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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,
* Generational GC tweaks.Kaz Kylheku2014-03-291-0/+20
| | | | | | | | | | | | | | | | | | * gc.c (make_obj): If we have room in the freshobj array, but are out of objects, then call more. Without this, we don't take proper advantage of this nursing area. (gc): Set the full_gc flag after doing gc, in preparation for next time. If we know full GC is coming, we can adjust some behaviors. Increase the threshold for calling the more() function to be the same as in the non-generational case: less than 3/4 of the size of a heap scavenged. (gc_set): Now does nothing if it is known that a full gc is coming. Also, in the checkobj array overflow case when we invoke gc, there is no point in adding obj to the array, since it must have been promoted to the mature generation. (gc_mutated): Don't bother storing the object in the array if a full GC is coming.
* * lib.c (string_time): If possible, change the timezone in theKaz Kylheku2014-03-291-0/+6
| | | | | struct tm from "GMT" to "UTC", so that the time_string_utc function will use UTC for the %Z format.
* Fix a bug arising from putting generation 1 objects into theKaz Kylheku2014-03-271-0/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | checkobj array (via the mut macro that expands to gc_mutated). The garbage collector assumes that checkobj has only generation 0 objects, which all exist in the freshobj array, which is subject to a sweep. So gen 1 objects in checkobj are never cleaned up properly: they do not have their REACHABLE flag reset, or their generation restored to 1. To fix this, a new array for these objects is introduced separate from checkobj. * gc.c (MUTOBJ_VEC_SIZE): New preprocessor symbol. (mutobj, mutobj_idx): New static array and integer. (mark_obj): Check for REACHABLE flag before checking the full_gc flag and generation, since those cost additional memory accesses. (mark): Mark the objects in the new mutobj array. (sweep): Sweep the objects in the mutobj array. (gc): Reset mutobx_idx to zero after gc. (gc_set): Rearrange logic. In the case that the checkobj array is full and a gc is done to make room, there is no point in adding to the array: the gc pass moves all babies to generation 1, so the object that was passed into the function is no longer a baby. (gc_mutated): Rewrite in terms of mutobj rather than checkobj, fixing the bug. * HACKING: Improved documentation of GC. Describe mut macro and mutobj array.
* More generational GC fixes. One GC fix.Kaz Kylheku2014-03-271-0/+17
| | | | | | | | | | | | | | | * combi.c (perm_init_common, comb_gen_fun_common, rcomb_gen_fun_common): Use set macro instead of plain assignment. * hash.c (hash_grow, copy_hash, hash_update_1): Use set macro instead of plain assignment. * lib.c (nreverse, lazy_appendv_func, lazy_appendv, vec_push, refset): Use set macro instead of plain assignment. (make_package): Assign all fields of the newly created PKG object before calling a function which can trigger GC. * parser.y (rlset): Use set macro.
* Fix generational GC regression caused by fixesKaz Kylheku2014-03-271-0/+11
| | | | | | | | | | in in 2014-03-12, when prof was introduced. The attempt to fix a bug made things worse. * lib.c (adjust_bounds): New static function. (chk_malloc, chk_calloc, chk_realloc): Replace existing logic with call to adjust_bounds. (chk_malloc_gc_more): Bugfix: add missing call to adjust_bounds.
* * genvim.txr: Update for WLL's and QLL's.Kaz Kylheku2014-03-261-0/+6
| | | | * txr.vim: Regenerate.
* * eval.c (me_quasilist): New static function.Kaz Kylheku2014-03-251-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | (eval_init): Register me_quasilist as quasilist macro expander. * lib.c (quasilist_s): New global variable. (obj_init): quasilist_s initialized. * lib.h (quasilist_s): Declared. * match.c (do_txreval): Handle quasilist syntax. * parser.l (QWLIT): New exclusive state. Extend lexical grammar to transition to QWLIT state upon the #` or #*` sequence which kicks off a word literal, and in that state, piecewise lexically analyze the QLL, mostly by borrowing rules from quasiliterals. * parser.y (QWORDS, QWSPLICE): New tokens. (n_exprs): Integrate splicing form of QLL syntax. (n_expr): Integrate non-splicing form of QLL syntax. (litchars): Propagate line number info. (quasilit): Fix "string literal" wording in error message. * txr.1: Introduced WLL abbreviation for word list literals, cleaned up the text a little, and documented QLL's.
* * eval.c (expand_quasi): Bugfix: incorrect logic, failingKaz Kylheku2014-03-251-0/+6
| | | | | to macro-expand the embedded forms in a quasiliteral except when they are the very first item.
* * parser.y (yybadtoken): Add missing cases for new tokenKaz Kylheku2014-03-251-0/+5
| | | | types WORDS and WSPLICE.
* Introducing word list literals.Kaz Kylheku2014-03-251-0/+18
| | | | | | | | | | | | | | | | * parser.l (WLIT): New exclusive start state. Extend lexical grammar to transition to WLIT state upon the #" or #*" sequence which kicks off a word literal, and in that state, piecewise lexically analyze the literal, mostly by borrowing rules from other literals. * parser.y (WORDS, WSPLICE): New tokens. (n_exprs): Integrate splicing form of word list literal syntax. (n_expr): Integrate non-splicit for of word list literal syntax. (litchars): Propagate line number info. (wordslit): New grammar rule. * txr.1: Updated.
* * eval.c (eval_init): Register last function as intrinsic.Kaz Kylheku2014-03-231-0/+10
| | | | | | | | * lib.c (last): New function. * lib.h (last): Declared. * txr.1: Documented last.
* * eval.c (eval_init): Register empty as intrinsic.Kaz Kylheku2014-03-231-0/+14
| | | | | | | | | | | | * lib.c (copy): Bugfix: handle lazy strings. Also, handle hash tables via copy_hash. (length): Bugifx: handle lazy strings. Also, handle hash tables via hash_count. (empty): New function. * lib.h (empty): Declared. * txr.1: Documented.
* * eval.c (not_s): New symbol var.Kaz Kylheku2014-03-231-0/+8
| | | | | | | (me_unless, me_while, m_until): New static functions. (eval_init): Register macros unless, while and until. * txr.1: Document unless, while and until.
* Version 87.txr-87Kaz Kylheku2014-03-221-0/+14
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* * utf8.c (w_fopen, w_popen, w_freopen, w_remove, w_rename): RevertKaz Kylheku2014-03-221-0/+5
| | | | 2014-03-14 changes.
* * eval.c (me_when): New static function.Kaz Kylheku2014-03-221-0/+7
| | | | | | (eval_init): Register "when" macro. * txr.1: Documented when macro.
* Second round of bugfixing on the theme of the previous commit.Kaz Kylheku2014-03-201-0/+15
| | | | | | | | | | | | | | Here were are changing the output clause to recognize all special clause tokens that are not used in output and turning them into regular Lisp. So @(if a b c) in an output clause works once again, recognized as IF exprs_opt ')' syntax, and turned into Lisp. Other things work that didn't work before like @(and), @(or) and so forth. * parser.y (make_expr): New static function. (not_a_clause): New nonterminal. (out_clause): Remove error-catching productions for match-side clauses. (o_elems): Now consists of a mixture of o_elems and not_a_clause's.
* Fixing gaping bug in the handling of @-delimited expressionsKaz Kylheku2014-03-201-0/+16
| | | | | | | | | | | | | | | within quasiliterals. This has been a problem for years. Quasiliteral strings existed very early before TXR Lisp was introduced. So it made sense that when @ is seen in a quasiliteral, the lexical analyzer pushed into the SPECIAL state in which directives are recognized, like in the pattern language. I noticed this because there is an @(if) directive now, which prevents `@(if ...)` from being valid. * parser.l (QSPECIAL): New scanner state. This is a state similar to SPECIAL that we enter into when @ is seen in a QSLIT state. In this state we recognize constructs like braced variables, but not certain other features like directives.
* * arith.c (int_flo): Fix non-handling of negative values.Kaz Kylheku2014-03-191-0/+4
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* * arith.c (tofloat, toint): New functions.Kaz Kylheku2014-03-191-0/+11
| | | | | | | | | * arith.h (tofloat, toint): Declared. * eval.c (eval_init): tofloat and toint registered as intrinsics. * txr.1: Documented.
* ChangeLog: fix wrong date in entry for Version 86.Kaz Kylheku2014-03-191-1/+1
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* Version 86.txr-86Kaz Kylheku2014-03-161-0/+14
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* * stream.c (win_make_cmdline): I think I cracked the code ofKaz Kylheku2014-03-161-0/+12
| | | | | | | | | | | passing escaped arguments to Microsoft's popen and system functions. The first argument cannot be quoted, but the subsequent ones can. It is the quoting of the first argument that causes the whole thing to be quoted. So we just avoid quoting the first argument. (If it has spaces, too bad; don't do that). (open_process): Fix neglected optional argument handling in Windows version of this function.
* * configure: Detect _wspawn* functions.Kaz Kylheku2014-03-161-0/+6
| | | | * stream.c (run): Implement using _wspawnvp on MinGW.
* * parser.l: Bugfix. When handling a backslash-newline continuationKaz Kylheku2014-03-151-0/+17
| | | | | | | | | | | | | | | | in the SPECIAL, NESTED and BRACED states, do not pop the state in all three, only in SPECIAL (to terminate the @\ continuation). * txr.1: Eliminate wrong claim that string literals do not split across lines, which is directly contradicted two paragraphs later. Document that quasiliterals also split. * genvim.txr (txr_regex, txl_regex): These definitions change from "syn match" to "syn region" so that the backslash-newline continuation can be properly handled. (txr_string, txr_quasilit): Correctly handle split literals. * txr.vim: Regenerated.
* * parser.y (text): Allow the EMPTY token (the @(empty) syntax)Kaz Kylheku2014-03-151-0/+7
| | | | | | to be a text. * txr.1: Documented @(empty).
* * parser.l (regex_parse, lisp_parse): Fix neglected handling ofKaz Kylheku2014-03-141-0/+9
| | | | | | | | optional arguments. This problem can cause the symbol : to be planted as the std_error stream, resulting in an error loop that blows the stack. * regex.c (regex_compile): Likewise.
* * utf8.c (w_fopen, w_popen, w_freopen, w_remove, w_rename): WeKaz Kylheku2014-03-141-0/+6
| | | | | have similar functions in the MSVCRT library used by MinGW, so if _WIN32 is defined, our functions now just wrap those.
* * stream.c (run): Fix MinGW build failures. The run function doesn'tKaz Kylheku2014-03-141-0/+5
| | | | work right with arguments, though: the win command line is broken.
* * eval.c (eval_init): Make seed argument optional in make-random-state.Kaz Kylheku2014-03-141-0/+17
| | | | | | | | | | | | | | | * rand.c (make_random_state): Do argument defaulting on seed. Also, mix getpid() into the seed. (random_fixnum): Bugfix: do proper defaulting on optional agument, rather than relying on nil. (random): Fix 2014-02-05 regression. This was totally broken, ignoring the random state passed in and using the global random state. This function must only use the state passed in; there is no defaulting to the global random state. * txr.1: Documenting that seed is optional in make-random-state. Describing what guarantees can be expected with regard to calls made close together temporally.
* Implementing @(if)/@(elif)/@(else) in the pattern language.Kaz Kylheku2014-03-131-0/+17
| | | | | | | | | | | | | | | | Input side for now; output later. * parser.y (if_clause, elif_clauses_opt, else_clause_opt): New nonterminals. (IF, ELIF, ELSE): New tokens. (yybadtoken): Handle IF, ELIF, ELSE. * parser.l: Recognize and return new tokens IF, ELIF and ELSE. * txr.1: Documented. * genvim.txr: Updated with if, elsif and else directive keywords. * txr.vim: Regenerated
* On platforms with sigaltstack, TXR programs can now catch theKaz Kylheku2014-03-131-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | segmentation fault that occurs when running out of stack space, and escape by throwing an exception. Also, bugfix: save and restore the gc enable/disable state. Without this, if we are ever running cod in a gc disabled state and it jumps out, gc stays disabled. * configure: added check for sigaltstack. * gc.h (gc_enabled): Declaration added for existing variable. * signal.c (is_cpu_exception): New static function. (sig_handler): For cpu_exception type signals that pertain to the execution of some instruction, turn on async_sig_enabled, so that the signal is not deferred. Otherwise we will just return without calling the user-defined handler, restart the instruction and get into a loop. Also, disable gc around the handler just in case. One issue is that we might be on an alternate stack, which gc won't like. (setup_alt_stack, teardown_alt_stack): New static functions. (set_sig_handler): If we have sigaltstack, and are asked to set up a SEGV handler, then set it up on the alternate stack. * signal.h (extended_jmp_buf): Adding new member, gc. (extended_setjmp, extended_longjmp): use gc member to save and restore the gc_enable state across setjmp and longjmp.
* * stream.c (open_process): If execvp fails, use errno as theKaz Kylheku2014-03-131-0/+7
| | | | | | exit status. (sh, run): New static functions. (stream_init): sh and run registered as intrinsics.
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