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* Adding fmt function.Kaz Kylheku2016-04-143-0/+24
| | | | | | | | * stream.c (fmt): New function. * stream.h (fmt): Declared. * txr.1: Documented.
* Trace expansion more in expansion-time errors.Kaz Kylheku2016-04-131-5/+32
| | | | | | * eval.c (error_trace): If an error occurs during the expansion of a form, that form may be the result of expansions. Dump those expansions.
* Bugfix: track origin for built-in macros.Kaz Kylheku2016-04-131-0/+1
| | | | | | | | | | | This fix is no longer that important, since due to the previous commit, expand now tracks expansion origins thoroughly, which hides this bug. However, expand_macro is directly called from a few other functions, like macroexpand, which don't benefit from that fix. * eval.c (expand_macro): Add forgotten set_origin call in the case when the native C expander is called.
* More thorough job of tracking expansion origins.Kaz Kylheku2016-04-131-7/+6
| | | | | | | | | | | | | This promotes better diagnostics. Simple test case: [(ret @5) 1]. * eval.c (do_expand): Manual tail recursion via backwards goto is removed; the function recurses now, and it recurses through the expand wrapper rather than by calling itself. That is needed in order to properly install the origin tracking for each expansion. (expand): Record origin for each expansion that already doesn't have one.
* Improved window-map doc.Kaz Kylheku2016-04-131-6/+6
| | | | * txr.1: Better wording introducing the semantics.
* Fix wrong documentation for window-map.Kaz Kylheku2016-04-131-7/+5
| | | | | * txr.1: window-map doesn't require the function to return sequences, and doesn't append.
* Broken argument handling in umethod.Kaz Kylheku2016-04-131-2/+3
| | | | | | * struct.c (umethod_fun): Use proper args interfaces to check whether there is an object argument, and to extract it.
* lib-version variable doesn't autoloadKaz Kylheku2016-04-121-1/+1
| | | | | * lisplib.c (ver_set_entries): Add lib-version to autoload list.
* Formatting in defstruct documentation.Kaz Kylheku2016-04-121-10/+1
| | | | | | * txr.1: remove spurious blank lines before .meIP blocks. After the indented section end, return to the correct indentation with .IP rather than .PP.
* Don't expand replacements of symbol macros.Kaz Kylheku2016-04-122-5/+8
| | | | | | | | | * eval.c (expand_symacrolet, do_expand): Don't expand the replacement form of a global or lexical symbol macro at the time it is bound to its symbol. This is almost certainly wrong in situations where it makes a difference. * txr.1: Noted in compatibility section.
* Harden glob: continuations, exceptions, re-entry.Kaz Kylheku2016-04-112-1/+38
| | | | | | | | | | | | | | | | | | | * glob.c (s_exit_point): New static variable. (errfunc_thunk): Set up a continuation guard frame, so the error function cannot capture a continuation across glob's stack frames. Intercept all unwinding with a simple unwind block, save the exit point in the global variable and then stop the unwinding by setting the unwind frame's exit point to null. (glob_wrap): Check for glob being re-entered and throw error if so. If the glob callback bailed due to unwinding (as seen by a non-null value in the exit point global variable), clean up the glob memory with globfree and continue the unwinding to the exit point. unwind.h (uw_curr_exit_point): New macro for accessing saved exit point in pure unwind frame.
* Remove frame popping action from uw_continue.Kaz Kylheku2016-04-112-6/+4
| | | | | | | | | | | | * unwind.c (uw_continue): Don't take the current frame as an argument and consequently don't pop the current frame. This function currently has only one use, the uw_catch_end macro. * unwind.h (uw_continue): Declaration updated. (uw_catch_end): Slight code rearrangement: pop the frame unconditionally before the test for whether uw_continue must be called.
* Typo in comment.Kaz Kylheku2016-04-111-1/+1
| | | | | * unwind.c (uw_unwind_to_exit_point): Misspelled "execute".
* Better handling of dot position function calls.Kaz Kylheku2016-04-112-31/+110
| | | | | | | | | | | | | | | | | | | | | | | | | | The expander now actually produces apply forms for dot position function call and dwim forms. This allows symbol macros to work naturally. * eval.c (sys_apply_s): New symbol variable. (imp_list_to_list, dot_to_apply): New static functions. (expand_forms, expand_forms_lisp1): We now throw an error if a non-nil atom terminates a form, Except in compatibility mode with TXR 137 or less, whereby we emulate the old behavior of not expanding this atom. (do_expand): Perform the dot_to_apply transformation on the arguments of the dwim form. Perform the dot_to_apply transformation on an entire function call form. (eval_init): Initialize sys_apply_s and register sys:apply function (using the same function object that is registered under apply). * txr.1: Documented that both DWIM forms and regular function call forms work as if by a transformation to apply form, removing verbiage which separately described the DWIM handling. Documented that symbol macros work properly in dot position.
* Fix more macro name misspellings in manual.Dave Love2016-04-101-10/+10
| | | | | * txr.1: A few occurrences of .codn misspelled .cond are are fixed and one .cod fixed to .code.
* New frame type to block bad unwinding and cont capture.Kaz Kylheku2016-04-082-4/+32
| | | | | | | | | | | | | | | | | | If some external function is invoked which can call back into TXR Lisp, we should guard against the called-back code from capturing a continuation across the external stack frames, and also from unwinding across those frames. This patch prepares a mechanism for this. * unwind.c (uw_unwind_to_exit_point): Abort with message on standard error if attempt is made to unwind across UW_GUARD frame. (uw_push_guard): New function. (uw_capture_cont): If the frame search encounters a UW_GUARD block, an exception is thrown. * unwind.h (enum uw_frtype): New enum constant, UW_GUARD. (uw_push_guard): Declared.
* Remove patch-related function from configure.Kaz Kylheku2016-04-081-18/+0
| | | | | | * configure (apply_patches): Unused function removed. This was used for applying patches when MPI was a tarball, not expanded in the code tree.
* Allow symbol macro in function call dot position.Kaz Kylheku2016-04-072-1/+19
| | | | | | | | | | * eval.c (expand_forms): If the forms list is an atom, then don't just return it. Try to expand it as a macro. If the macro produces a compound form, diagnose with an exception, otherwise return the expansion. * txr.1: Document the treatment of symbol macros in function call dot position.
* Document improper lists as macro call forms.Kaz Kylheku2016-04-071-0/+36
| | | | | | | | * txr.1: New section: Improper Lists as Macro Calls. This is necessary because the section on Dot Position in Function Calls doesn't cover macros. Macros are simpler, because it's just destructuring of syntax.
* Example formatting under Dot Position in Function Calls.Kaz Kylheku2016-04-071-2/+2
| | | | * txr.1: Just some whitespace for alignment of comments.
* Dot position in function calls described in terms of apply.Kaz Kylheku2016-04-071-21/+29
| | | | | | | | * txr.1: Reduce and simplify the description text under the Dot Position in Function Calls section, giving the semantics via equivalence to apply. The handling of values which are atoms or improper lists is described under apply in a more effective way.
* Mistake in apply example.Kaz Kylheku2016-04-071-1/+1
| | | | * txr.1: Example produces (1 2 3 4), not (1 2 3).
* Fix throw used instead of throwf in defstruct.Kaz Kylheku2016-04-061-9/+9
| | | | | | * share/txr/stdlib/struct.tl (defstruct): Errors about duplicate :init, :postinit or :fini were incorrectly thrown using throw rather than throwf.
* Diagnose bad supertype in defstruct.Kaz Kylheku2016-04-061-1/+6
| | | | | | | * share/txr/stdlib/struct.tl (defstruct): If super isn't nil, it must name an existing struct type, or an exception is thrown. Previously, a nonexistent struct was silently treated as if nil had been specified.
* Fix inappropriate references to tree-bind.Kaz Kylheku2016-04-051-3/+3
| | | | | | * txr.1: Documentation for the tc macro falsely claims that it is based on tree-bind, in the description and example expansion.
* Cramped parenthesis under suspend.Kaz Kylheku2016-04-051-2/+2
| | | | | * txr.1: Fix strange formatting mistake, causing parenthesis to follow a meta symbol with no whitespace.
* Incorrect obtain-block heading.Kaz Kylheku2016-04-051-1/+1
| | | | * txr.1: obtain-block introduced as the obtain-from macro.
* Revamp bad character messages in lexer.Kaz Kylheku2016-04-011-4/+15
| | | | | | | | * parser.l (grammar): Drop colon from unrecognized escape message. "bad character in directive" handles various cases to avoid printing junk to the terminal. Basic message harmonizes with the one in the yybadtoken function in the parser. Non-UTF-8 byte printed as TXR hex integer literal.
* Wrap #if HAVE_SOCKETS around some functions.Kaz Kylheku2016-03-311-0/+4
| | | | | | * stream.c (delegate_get_sock_family, delegate_get_sock_type, delegate_get_sock_peer, delegate_set_sock_peer): These functions should only be defined if HAVE_SOCKETS is true.
* Bugfix: support abstract UNIX socket addresses on Linux.Kaz Kylheku2016-03-312-6/+39
| | | | | | | | | | | | | Making it work as already documented. * socket.c (MIN): New macro. (sockaddr_pack): Use utf8_dup_to_buf to convert Unix socket path to a buffer of UTF-8 bytes, possibly with one or more embedded null bytes. Copy as much of this as fits into the sun_path member of struct sockaddr_un. * txr.1: Improve documentation about the abstract names on Linux.
* UTF-8 API overhaul: security, and other concerns.Kaz Kylheku2016-03-314-42/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The main aim here is to pave the way for conversion between arbitrary buffers of bytes (that may include embedded NUL characters) and a wide string. Also, a potential security hole is closed. When we convert a TXR string to UTF-8 for use with some C library API, any embedded pnul characters (U+DC00) turn into NUL bytes which effectively cut the UTF-8 string short, and silently so. The C library function receives a shortened string. This could be exploitable in some situations. * lib.c (int_str): Use utf8_dup_to_buf instead of utf8_dup_to_uc. Pass 1 to have the buffer null-terminated, since mp_read_radix depends on it. * stream.c (make_string_byte_input_stream): Use utf8_dup_to_buf. This gives us the size, soo we don't have to call strlen. The buffer is no longer null terminated, but the byte input stream implementation never relied on this. * utf8.c (utf8_from_buf): Replacement fors utf8_from_uc which doesn't assume that the buffer of bytes is null-terminated. It can produce a wide string containing U+DC00 characters corresponding to embedded nulls in the original buffer. (utf8_from): Calculate length of null-terminated string and use utf8_from_buf. (utf8_to_buf): Replacement for utf8_to_uc. Can produce a buffer which is or is not null-terminated, based on new argument. (utf8_to): Use utf8_to_buf, and ask it to null-terminate, thus preserving behavior. (utf8_dup_from_uc): This function was not used anywhere and is removed. (utf8_dup_to_buf): Replacement for utf8_dup_to_uc which takes an extra agrgument, whether to null-terminate or not. (utf8_dup_to): Apply security check here: is the resulting string as long as utf8_to says it should be? If not, it contains embedded nulls. Throw an exception. * utf.h (utf8_from_uc, utf8_to_uc, utf8_dup_from_uc, utf8_dup_to_uc): Declarations removed. (utf8_from_buf, utf8_to_buf, utf8_dup_to_buf): Declared.
* Define a sock-peer syntactic place.Kaz Kylheku2016-03-312-6/+49
| | | | | | | * share/txr/stdlib/socket.tl (sock-peer): Syntactic place defined, allowing (set (sock-peer sock) addr). * txr.1: Documented sock-peer as accessor and sock-set-peer.
* sock-set-peer shouldn't mark dgram sockets connected.Kaz Kylheku2016-03-311-1/+5
| | | | | | | | | | | | Merely setting a peer doesn't actually connect the socket, so it must not be marked connected. If it is wrongly marked connected, then dgram_flush will wrongly use send rather than sendto. * socket.c (dgram_set_sock_peer): Don't set sock_connected flag. (sock_connect): Set the sock_connected flag here, for dgram sockets.
* Expose sock-set-peer function.Kaz Kylheku2016-03-311-0/+1
| | | | * stream.c (stream_init): Register sock-set-peer intrinsic.
* Rename badly named socket-related internal funs.Kaz Kylheku2016-03-311-16/+16
| | | | | | | | | | | | | | | Also rename its related functions for consistency. * socket.c (sockaddr_in_out): Renamed to sockaddr_in_unpack. The "in" stands for internet, and is juxtaposed to "out". (sockaddr_in6_out): Renamed to sockaddr_in6_unpack. (unix_sockaddr_out): Renamed to sockaddr_un_unpack. (getaddrinfo_wrap): Calls to *_out functions renamed to *_unpack. (sockaddr_in): Renamed to sockaddr_pack. Original name is confusing against the struct tag name in struct sockaddr_in. (dgram_set_sock_peer, sock_bind, sock_connect, sock_accept): Calls updated to sockaddr_pack.
* Version 137.txr-137Kaz Kylheku2016-03-306-304/+334
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* linenoise: replace poor uses of size_t with int.Kaz Kylheku2016-03-291-76/+75
| | | | | | | | | | | | | | | | | | | * linenoise/linenoise.c (struct lino_state): Members plen, pos, sel, end, dlen, dpos, dsel, dend, cols, oldrow and maxrows change from size_t to int. (struct lino_undo): Member dpos changes likewise. (restore_undo, free_completions, complete_line, next_hist_match, history_search, sync_data_to_buf, copy_display_params, refresh_singleline, screen_rows, col_offset_in_str, refresh_multiline, scan_match_rev, scan_rev, scan_match_fwd, scan_fwd, find_nearest_paren, paren_jump, update_sel, yank_sel, delete_sel, edit_insert, edit_insert_str, edit_move_eol, edit_move_matching_paren, edit_delete_prev_all, edit_delete_to_eol, edit_delete_prev_word, edit_delete_line, edit): Replace various size_t's in function arguments, return values and local variables with int. Drop what would now be useless casts of constants to type int.
* Replace all stray C style casts with macros.Kaz Kylheku2016-03-298-76/+107
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * gc.c (gc_report_copies): C style casts found in this function. * linenoise.c (strip_qual, convert, coerce): Copy and paste the macros here. (record_undo, compare_completions, lino_add_completion, history_search, ab_append, sync_data_to_buf, refresh_singleline, screen_rows, refresh_multiline, find_nearest_paren, paren_jump, yank_sel, edit_move_matching_paren, edit, lino_make, lino_copy, lino_hist_add, lino_hist_set_max_len): C style casts replaced. * mpi/mpi-types.h (MP_DIGIT_BIT, MP_DIGIT_MAX, MP_WORD_BIT, MP_WORD_MAX, RADIX): C style casts replaced. * mpi/mpi.c (convert, coerce): Copy and paste the macros here. (mp_init_size, mp_init_copy, mp_copy, mp_set_int, mp_div_d, mp_bit, mp_to_double, mp_to_signed_bin, mp_to_unsigned_bin, mp_to_unsigned_buf, mp_toradix_case, mp_grow, s_mp_set_bit, s_mp_mod_2d, s_mp_mul_2d, s_mp_div_2d, s_mp_mul_d, s_mp_mul, s_mp_sqr, s_mp_div, s_mp_2expt, s_mp_todigit): C style casts replaced. * mpi/mplogic (convert): Macro copy and pasted here. (mpl_num_set, mpl_num_clear): C style casts replaced. * parser.c (provide_completions): Likewise. * signal.c (small_sigfillset): Likewise. * stream.c (stdio_truncate, test_set_indent_mode, set_indent_mode): Likewise.
* Rewrite intro to delimited continuations.Kaz Kylheku2016-03-291-21/+114
| | | | * txr.1: Concrete example is given, with a detailed walk-through.
* Incorrect typesetting for suspend macro syntax.Kaz Kylheku2016-03-291-1/+1
| | | | | * txr.1: Wrong troff macro used for syntax of suspend macro, rendering it invisible.
* Doc restructuring: Filesystem Access seection gone.Kaz Kylheku2016-03-281-237/+235
| | | | | | | * txr.1: open-file, open-tail and open-directory moved into Input and Output (Streams) section. remove-path and rename-path moved into System Programming. Filesystem Access section removed.
* New macro: lset.Kaz Kylheku2016-03-283-1/+45
| | | | | | | | | * lisplib.c (place_set_entries): Added "lset" to autoload list. * share/txr/stdlib/place.tl (lset): New macro. * txr.1: Documented lset.
* Adding rightmost item search functions.Kaz Kylheku2016-03-274-3/+373
| | | | | | | | | | | | | | | | | | * eval.c (eval_init): Registered intrinsics rmemq, rmemql, rmemqual, rmember, rmember-if, rposqual, rposql, rposq, rpos, rpos-if, rfind, rfind-if and rsearch. * lib.c (rmemq, rmemql, rmemqual, rmember, rmember-if, rposqual, rposql, rposq, rpos, rpos-if, rfind, rfind-if, rsearch): New functions. (rsearch_list): New static function. (search): Omit unreachable return statement. * lib.h (rmemq, rmemql, rmemqual, rmember, rmember-if, rposqual, rposql, rposq, rpos, rpos-if, rfind, rfind-if, rsearch): Declared. * txr.1: Documented.
* Doc fixes under condlet.Kaz Kylheku2016-03-261-6/+4
| | | | * txr.1: Fix inaccurate wording referring to pairs.
* Bugfix in error location reporting across macro expansions.Kaz Kylheku2016-03-261-2/+2
| | | | | | | * eval.c (do_expand, macroexpand_1): The original form must have priority in providing source location info, over the macro. Otherwise macro bodies may get reported as locations of errors that occur in substituted code.
* Methods in time struct: time-local and time-utc.Kaz Kylheku2016-03-242-5/+66
| | | | | | | | | | | * lib.c (time_local_s, time_utc_s): New symbol variables. (time_meth): New static function. (time_init): Initialize new symbol variables. Create the time struct with two static slots, and initialize those static slots to be methods. * txr.1: Introduce "the epoch" term. Document the new methods.
* Mistake in time-string-local doc.Kaz Kylheku2016-03-241-2/+2
| | | | | * txr.1: Fixed wrongly copied and pasted reference to time-string-local and time-string-utc.
* Bugfix: lazy str printing not observing limit.Kaz Kylheku2016-03-241-0/+4
| | | | | * lib.c (lazy_str_put, out_lazy_str): Decrement lim variable in loop body.
* HTML formatting issue in tree-case and tc.Kaz Kylheku2016-03-241-2/+2
| | | | * txr.1: similar stray space removed in two places.
* Stray word removed, and formatting fix.Kaz Kylheku2016-03-241-2/+2
| | | | * txr.1: Under Macro parameter lists again.
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