| Commit message (Collapse) | Author | Age | Files | Lines |
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* 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.
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* 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.
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* 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.
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* 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.
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* 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.
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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.
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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.
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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.
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*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.
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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.
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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.
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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.
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* 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.
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* 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.
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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.
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* 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.
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* 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.
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* 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.
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Calling maprodo with one list argument would fall back on mappend
rather than mapdo.
* eval.c (maprodo): mappendv -> mapdov.
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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.
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* 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.
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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.
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* 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.
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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.
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* 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.
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* 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.
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*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.
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* eval.c (me_ecase): Diagnose missing test form, like me_case.
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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.
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* 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.
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* 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.
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* 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.
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* 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.
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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.
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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.
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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.
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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.
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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.
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* 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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* eval.c (eval_init): Register built-in-type-p intrinsic.
* lib.c (buitin_type_p): Rename to built_in_type_p since the
word built-in is hyphenated. The function also tests
whether the argument is a COBJ class.
(cobj_class_exists): Function removed.
* stdlib/doc-syms.tl: Updated.
* stdlib/struct.tl (defstruct): Add built-in-type-p check.
* struct.c (make_struct_type): Call only built_in_type_p;
cobj_class_exists is gone.
* txr.1: Document built-in-type-p.
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All expand-time errors go through expand_error for
compiler-stylen error reporting.
* eval.c (not_bindable_error, dotted_form_error): Only
expander helper functions call these helpers so they get
switched to expand_error.
(expand_opt_params_rec, expand_params_rec, expand_param_macr,
expand_lisp1, expand_lisp1_value, expand_lisp1_setq,
expand_setqf, expand_qquote_rec, expand_vars,
expand_fbind_vars, me_case, me_whilet, me_iflet_whenlet,
me_load_for, expand_catch_clause, expand_switch, me_l1_val,
me_l1_setq): Use expand_error instead of eval_error.
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* eval.c (bind_macro_params): Take the error reporting
function as a functional argument which points either to
eval_error or expand_error. Update all the recursive calls to
pass it down. Replace all calls to eval_error with this
function pointer.
(me_interp_macro, op_mac_param_bind, op_mac_env_param_bind):
Call bind_macro_params with expand_error as the function, so
that under the right circumstances, the error will go to
standard error, as well as being thrown as an exception.
In the case of me_interp_macro, this is clear. The reason we
do it for the other two is that their primary use case is
inside macros.
(op_tree_case, op_tree_bind): Pass eval_error to
mac_param_bind, preserving existing behavior.
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* eval.c (eval_exception): New parameter distinguishes whether
this function is called from expansion time. If so, it behaves
similarly to the compile-error funtion in error.tl: if
a recursive load is in effect, a there is no error handler,
then deferred warnings are dumped to standard error, followed
by the error message. Then the exception is thrown.
(eval_error, eval_warn): Pass zero to eval_exception to
indicate that this is not expansion time.
(expand_error, missing_arg_error, excess_args_error,
no_dot_check, syn_check): New static functions.
(me_def_variable, me_each, me_for, me_gen, me_gun, me_delay,
me_when, me_unless, me_while_until, me_whie_until_star,
me_equot, me_case, me_dotimes, me_lcons, me_mlet,
me_load_time, me_l1_val, me_l1_setq, me_assert): Add syntactic
checks to built-in macros.
(do_expand): Add syntactic checks for a number of special
operators.
* unwind.c (catch_frame_s): New symbol variable.
(uw_late_init): Initialize catch_frame_s and use that in
registering the catch-frame structure.
* unwind.c (catch_frame_s): Declared.
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Numerous functions in TXR Lisp treat a nil argument for an
optional parameter as if it were omitted. In the case of
streams, this can cause problems. An accidental nil passed to
an input function can cause it to read from standard input and
hang. In this patch, argument defaulting is tighented for
functions that perform I/O. It's mostly stream parameters, but
not exclusively.
* eval.c (prinl, pprinl): Use default_arg_strict to default
the stream argument, and also re-use that value for the
put_char call.
* lib.c (lazy_stream_cons, print, pprint, put_json): Use
default_arg_strict rather than default_arg.
* parser.c (regex_parse, lisp_parse_impl, txr_parse): Tighten
the defaulting of the input stream and error stream arguments,
streamlining the logic at the same time.
* stream.c (do_parse_mode): Use default_arg_strict for the
mode string argument.
(record_adapter, get_line, get_char, get_byte, get_bytes,
unget_byte, put_buf, fill_buf, fill_buf_adjust,
get_line_as_buf, put_string, put_char, put_byte, put_line,
flush_stream, get_string): Use strict defaulting for stream
argument.
(mkstemp_wrap): Use strict defaulting for suffix.
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This is like find-if, but returns the value of the predicate
function rather than the item.
* eval.c (eval_init): Register find-true instrinsic.
* lib.c (find_true): New function.
* lib.c (find_true): Declared.
* stdlib/doc-syms.tl: Updated.
* txr.1: Documented.
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This patch improves the constantp function dramatically. It
now performs a full expansion of its argument, and recognizes
all of the constant foldable functions that the compiler
recognizes.
* eval.c (const_foldable_s): New symbol variable.
(const_foldable_hash): New static variable.
(constantp_noex): Look up function in the hash table of const
foldable functions, including in the case when it appears in a
dwim form as in [+ 2 2] which is (dwim + 2 2). In this case,
recursively check the arguments for constantp_noex.
We get the hash table of foldable functions from the
sys:%const-foldable% variable, which comes from an autoloaded
module.
(constantp): Fully expand the input form, not just m
macroexpand.
(eval_init): Register the const_foldable_s variable.
* lisplib.c (constfun_instantiate, constfun_set_entries): New
static functions.
(lisplib_init): Register auto-loading of constfun module
via new static functions.
* stdlib/compiler.tl; Load the constfun module if
%const-foldable% is not defined.
(%const-foldable-funs%, %const-foldable%): Removed from here.
* stdlib/constfun.tl: New file.
(%const-foldable-funs%, %const-foldable%): Moved here.
* txr.1: Documented changes to constantp.
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* eval.c (expand_progn, do_expand): Use the constantp_noex
helper function of constantp on arguments that we have already
fully expanded.
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* eval.c (error_trace): If the error is a stack overflow, then
save the printing depth and width, and set them to stringent
values, to minimize recursion in the printer. This minimizes
the chances of a segfault or runaway iteration under some
conditions. A repro test case is (print '#1=(#1#)) entered
into the listener.
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* configure: detect getrlimit, producing HAVE_RLIMIT in
config.h.
* eval.c (do_eval, do_expand): Call gc_stack_check inline
function to check stack pointer against limit.
* gc.c (gc_stack_bottom): Static becomes extern, so inline
function in gc.h can refer to it.
(gc_stack_limit): New global variable.
(gc_init): If we have rlimit, then probe RLIMIT_STACK.
If the stack is sufficiently large, then enable the stack
overflow protection, which kicks in when the stack pointer
appears to be within a certain percentage of the limit.
(set_stack_limit, get_stack_limit): New static functions.
(gc_late_init): Register set-stack-limit and get-stack-limit
intrinsics.
(gc_stack_overflow): New function.
* gc.h (gc_stack_bottom, gc_stack_limit, gc_stack_overflow):
Declared.
(gc_stack_check): New inline function.
* lib.c (stack_overflow_s): New symbol variable.
(obj_print_impl): Call gc_stack_check to protect recursive
printing againts overflow.
* lib.h (stack_overflow_s): Declared.
* unwind.c (uw_init): Register stack-overflow symbol as a an
exception symbol subtyped from error.
(uw_unwind_to_exit_point): When dealing with an unhandled
exception, turn off the stack limit, so we can print the
messages without triggering it in a loop.
* vm.c (vm_execute_closure, vm_funcall_common): Insert
gc_stack_check to the top of the execution of every VM
function.
* txr.1: Documented.
* share/txr/stdlib/doc-syms.tl: Updated.
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Adding a self parameter to c_str so that when a non-string
occurs, the error is reported against a function.
Legend:
A - Pass existing self to c_str.
B - Define self and pass to c_str and possibly other
functions.
C - Take new self parameter and pass to c_str and possibly
other functions.
D - Pass existing self to c_str and/or other functions.
E - Define self and pass to other functions, not c_str.
X - Pass nil to c_str.
* buf.c (buf_strm_put_string, buf_str): B.
* chksum.c (sha256_str, md5_str): C.
(sha256_hash, md5_hash): D.
* eval.c (load): D.
* ffi.c (ffi_varray_dynsize, ffi_str_put, ffi_wstr_put, ffi_bstr_put): A.
(ffi_char_array_put, ffi_wchar_array_put): C.
(ffi_bchar_array_put): A.
(ffi_array_put, ffi_array_out, ffi_varray_put): D.
* ftw.c (ftw_wrap): A.
* glob.c (glob_wrap): A.
* lib.c (copy_str, length_str, coded_length,split_str_set,
list_str, cmp_str, num_str, out_json_str, out_json_rec,
display_width): B.
(upcase_str, downcase_str, string_extend, search_str,
do_match_str, do_rmatch_str, sub_str, replace_str,
cat_str_append, split_str_keep, trim_str, int_str, chr_str,
span_str, compl_span_str, break_str, length_str_gt,
length_str_ge, length_str_lt, length_str_le, find, rfind, pos,
rpos, mismatch, rmismatch): A.
(c_str): Add self parameter and use in type mismatch diagnostic.
If the parameter is nil, use "internal error".
(flo_str): B, and correction to "flot-str" typo.
(out_lazy_str, out_quasi_str, obj_print_impl): D.
* lib.h (c_str): Declaration updated.
* match.c (dump_var): X.
(v_load): D.
* parser.c (open_txr_file): C.
(load_rcfile): E.
(find_matching_syms, provide_atom): X.
(hist_save, repl): B.
* parser.h (open_txr_file): Declaration updated.
* parser.y (chrlit): X.
* regex.c (search_regex): A.
* socket.c (getaddrinfo_wrap, sockaddr_pack): A.
(dgram_put_string): B.
(open_sockfd): D.
(sock_connect): E.
* stream.c (stdio_put_string, tail_strategy, vformat_str,
open_directory, open_file, open_tail, remove_path,
rename_path, tmpfile_wrap, mkdtemp_wrap, mkstemp_wrap): B.
(do_parse_mode, parse_mode, make_string_byte_input_stream): B.
(normalize_mode, normalize_mode_no_bin): E.
(string_out_put_string, formatv, put_string, open_fileno,
open_subprocess, open_command, base_name,
dir_name, short_suffix, long_suffix): A.
(run): D.
(win_escape_cmd, win_escape_arg): X.
* stream.h (parse_mode, normalize_mode,
normalize_mode_no_bin): Declarations updated.
* sysif.c (mkdir_wrap, do_utimes, dlopen_wrap, dlsym_wrap,
dlvsym_wrap): A.
(do_stat, do_lstat): C.
(mkdir_nothrow_exists, ensure_dir): E.
(chdir_wrap, rmdir_wrap, mkfifo_wrap, chmod_wrap,
symlink_wrap, link_wrap, readlink_wrap, exec_wrap,
getenv_wrap, setenv_wrap, unsetenv_wrap, getpwnam_wrap,
getgrnam_wrap, crypt_wrap, fnmatch_wrap, realpath_wrap,
opendir_wrap): B.
(stat_impl): statfn pointer-to-function argument now takes
self parameter. When calling it, we pass name.
* syslog.c (openlog_wrap, syslog_wrapv): A.
* time.c (time_string_local, time_string_utc,
time_string_meth, time_parse_meth): A.
(strptime_wrap): B.
* txr.c (txr_main): D.
* y.tab.c.shipped: Updated.
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