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* doc: consistency of condition-pattern term for awk.Kaz Kylheku2022-12-301-2/+2
| | | | | * txr.1: Fix instances of condition-pattern and condition-clauses to condition-action.
* doc: fix nonexistent macro name.Kaz Kylheku2022-12-302-2/+2
| | | | | | | * txr.1: *define-struct-prelude* should of course be define-struct-prelude. * stdlib/doc-syms.tl: Updated.
* doc: improve span-str, compl-span-str, break-strKaz Kylheku2022-12-101-0/+32
| | | | | * txr.1: document return value better for span-str and compl-span-str. Add examples for all three functions.
* doc: abc_function typo.Kaz Kylheku2022-12-101-1/+1
| | | | | * txr.1: In FFI-related example, a call to abc_function should just refer to function.
* quips: new one.Kaz Kylheku2022-12-101-0/+1
| | | | * stdlib/quips.tl (%quips%): New one about personality.
* compiler: runaway recursion in constant folding call.Kaz Kylheku2022-11-261-1/+4
| | | | | | | | | | | | | | | | | When an invalid call expression is constant folded, such as (call 'abs 1 2), runaway recursion occurs. This is because due to the wrong number of arguments being passed to abs, the safe-const-reduce function returns the expression unmodified. The comp-apply-call method then passes it to compile, wrongly assuming a reduction had taken place, and so everything repeats. * stdlib/compiler.tl (comp-apply-call): Detect when safe-const-reduce has hit a fixed point by returning the input form. In that case, we don't call the compiler top-level entry point, but the comp-fun-form method directly; the wrong function call will be compiled without constant folding and throw an error at run-time.
* compiler: bug: some functions mustn't be constant-foldedKaz Kylheku2022-11-251-5/+5
| | | | | | | | * stdlib/constfun.tl (%const-foldable-syms%): Removing the following functions, which cannot be constant folded because maybe are relied upon to produce fresh objects: cons, sub-list, conses, ldiff, uniq, tostring, tostringp, join, join-with.
* streams: fixes in few type error diagnostics.Kaz Kylheku2022-11-211-5/+7
| | | | | | | | | | | * stream.c (make_string_byte_input_stream, get_string_from_stream): Use self in diagnostic, and print bad object using ~s rather than ~a. (get_list_from_stream): Likewise, and add missing nao as well. (catenated_stream_push): Add self string, use in diagnostics, print bad object using ~s.
* expt: zero exponent yields 1.0.Kaz Kylheku2022-11-202-0/+9
| | | | | | | | * arith.c (expt): NUM-FLNUM, FLNUM-NUM and FLNUM-FLNUM cases ensure that if the expontent is zero, the return value is 1.0. Implementations of pow do this, but ISO C doesn't require it. * txr.1: Now documented.
* hash: floating: handle negative zero.Kaz Kylheku2022-11-201-3/+5
| | | | | | * hash.c (hash_double): If the input is equal to 0.0, return 0, so that both negative and positive zero have the same hash value.
* crypt: reduce ridiculous stack usage.Kaz Kylheku2022-11-171-4/+9
| | | | | | * sysif.c (crypt_wrap): Dynamically allocate struct crypt_data instead, because it's over 128K wide, resulting in a huge stack frame size.
* structs: use type-error rather than error.Kaz Kylheku2022-11-111-5/+5
| | | | | | | * struct.c (struct_handle, stype_handle_impl, struct_handle_for_slot, umethod_fun, umethod_args_fun): Throw type-error rather than error for the situation that an argument isn't a struct.
* read-once: support globals properly.Kaz Kylheku2022-11-103-15/+42
| | | | | | | | | | | | | | | | | | | | | | | | When a global variable v is wrapped with (read-once v), multiple accesses to the place still generate multiple accesses of the global through getv or getlx instructions. The reason is that the alet and slet macros optimize away a temporary bound to the value of a variable regardless of whether the variable is lexical. Let's fix that. * stdlib/place.tl (slet, alet): Replace the bindable test with lexical-var-p, in the given environment. A binding to a variable is only alias-like if the variable is lexical, otherwise we need a real temporary. * tests/012/struct.tl (get-current-menv): New macro. (menv): New global variable. Fix a number of tests which use expand, whose expansion has changed because the expressions refer to free variables. We introduce an environment parameter which binds all the variables, so that the optimized expansion is produced, as before. * txr.1: Updated documentation. slet gets examples.
* ftw: default flags to ftw-physKaz Kylheku2022-11-102-4/+24
| | | | | | | | | | | | | | | More often than not, you want the FTW_PHYS flag when calling the nftw function. Let's make that the default in TXR's wrapper. * ftw.c (ftw_wrap): Default to FTW_PHYS when flags argument not given, rather than zero, subject to compatibility option. (ftw_init): Don't check for FTW_PHYS with ifdef, since we relied on it being present. And anyway, any nftw implementation must have that. * txr.1: Documented.
* New feature: struct preludes.Kaz Kylheku2022-11-036-4/+150
| | | | | | | | | | | | | | | | | | | | | | | | | | | A struct prelude definition associates one or more future defstruct (by struct name) with clauses which are implicitly inserted into the defstruct. It is purely a macro-time construct, customizing the expansion behavior of defstruct. * stdlib/struct.tl (*struct-prelude, *struct-prelude-alists*): New special variables holding hash tables. (defstruct): Before processing slot-specs, augment it with the contents of the prelude definitions associated with this struct name. (define-struct-prelude): New macro. * autoload.c (struct_set_entries): define-struct-prelude is interned and triggers autoload of struct module. * tests/012/oop-prelude.tl: New file. * tests/012/oop-prelude.expected: Likewise. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* crypt: remove dubious validator.Kaz Kylheku2022-10-313-71/+37
| | | | | | | | | | | | | | | | | | | | | | | | The validate_salt function was introduced in commit c3a0ceb2cea1a9d43f2baf5a2e63d0d712c8df19, February 2020. I cannot reproduce the internal crash in crypt which it alleges, and I neglected to mention the bad inputs in the commit or add tests. I'm not able to reproduce the alleged behavior in spite of trying all sorts of bad inputs; and looking at the crypt source in glibc, I don't see any obvious problem. And so, on this Halowe'en, we exorcise the ghost that has been haunting the crypt. * sysif.c (salt_char_p, validate_salt): Static functions removed. (crypt_wrap): Don't call validate_salt, and so cwsalt need not be tested for null. * tests/018/crypt.tl: New file. * txr.1: Mention that crypt_r is used if available, which avoids static storage.
* listener: drop security checks on windows.Kaz Kylheku2022-10-271-1/+14
| | | | | | | | | | | | | | These checks go off on Windows and are likely not easily fixable. They have to do with how Cygwin maps permissions. Our security checks depend on a detailed, bona fide Unix implementation. * parser.c (report_file_perm_problem, report_path_perm_problem): Empty bodies when compiled for Cygwin. (repl): Initialize the ppriv_s and psafe_s variables to the tf symbol, the function which takes any number of arguments, ignoring them, and returning t.
* command line: set self-path for --compile.Kaz Kylheku2022-10-272-3/+33
| | | | | | | | | | | | | | | I noticed that when compiling a TXR Lisp program which refers to self-path using the --compile option, the compiler complained about self-path being unbound. * txr.c (self_path_s): New global variable. (do_compile_opt): Prior to running compile-update-file, bind self-path to the source path. (txr_main): Don't define local self_path_s, but initialize the global one. Replace redundant re-intering of self-path with a reference to self_path_s. * txr.1: self-path documentation updated.
* txrtags: maintain due to new defstruct syntax.Kaz Kylheku2022-10-271-2/+3
| | | | | | * txrtags.tl (process-form): Handle :postfini in the same way as :fini. In fallback case, reject clauses headed by a keyword symbol.
* compiler: optimizations in catch.Kaz Kylheku2022-10-271-46/+63
| | | | | | | | | | | | | | | * stdlib/compiler.tl (comp-catch): Under an optimization level of at least 1, if no symbols are being caught, or if the try expression is a safe constant expression, then just compile the try expression. Furthermore, if there is only one exception symbol being caught, and a catch clause is for a subtype of that symbol, we eliminate the run-time exception-subtype-p test. This will always be true if the catch macros are being used, because the list of symbols is derived from the clauses. Lastly, if there is only one exception symbol being caught, any clause which doesn't match that symbol is now eliminated as dead code. That shouldn't happen unless the sys:catch operator is used directly.
* lib: or2: define in GCC-specific way.Kaz Kylheku2022-10-261-1/+5
| | | | | | | | | * lib.h (or2): Define simply using the ?: operator from GNU C, eliminating the explicit temporary variable. (uses_or2): For GNU C, we make this a dummy, harmless declaration. If memory serves me, one of the few good ways to do that it without eliciting unused warnings is to declare an enum.
* cat-str/join/join-with: allow nested sequencesKaz Kylheku2022-10-253-96/+111
| | | | | | | | | | | | | | | | | | | | | | | The measure/allocate/catenate functions which underlie the cat-str implementation are streamlined, simplifying the code. At the same time, they handle nested sequences of string/character items. * lib.c (struct cat_str): New member, seen_one. This flips from 0 to 1 after the first item has been seen in the cat_str_measure pass or cat_str_append pass. Each item other than the first is preceded by a separator. (cat_str_measure, cat_str_append): The more_p argument is dropped. We account for the separator with the help of the new seen_one flag, which allows us to easily recurse over items that are sequences. (cat_str_alloc): Reset the seen_one flag in preparation for the cat_str_append pass. (cat_str, vscat, scat2, scat3, join_with): Simplified. * tests/015/split.tl: New tests. * txr.1: Redocumented.
* defstruct: new :inherit clause.Kaz Kylheku2022-10-173-5/+53
| | | | | | | | | | | | | | | The :inherit clause allows custom struct clauses to inject inherited bases. * stdlib/struct.tl (defstruct): Recognize :inherit clause, adding symbol arguments to extra list of supers that get appended to the list coming from defstruct's seconda rgument. (define-struct-clause): Disallow :inherit clause name. * tests/012/oop-dsc.tl: New tests. * txr.1: Documented.
* doc: opip, flow: note about no-argument case.Kaz Kylheku2022-10-171-0/+20
| | | | | | | * txr.1: It's a developer surprise that (flow x) returns nil rather than x; which is due to the documented behavior of chain, when it has no arguments. Let's add cautionary notes.
* Version 283.txr-283Kaz Kylheku2022-10-167-799/+885
| | | | | | | | | | | | | | | | * RELNOTES: Updated. * configure (txr_ver): Bumped version. * stdlib/ver.tl (lib-version): Bumped. * txr.1: Bumped version and date. Also mention that separator commas in integer tokens are new in 283 and have a different interpretation in older versions. * txr.vim, tl.vim: Regenerated. * protsym.c: Regenerated.
* args: don't use C99 flexible array member.Kaz Kylheku2022-10-151-6/+2
| | | | | | | | | | | | | | | The reason is that args_decl_list places struct args inside a larger struct, where it is followed by another member. A struct with a flexible array being other than the last member of another struct is a GNU extension, which generates warnings on newer GCC versions. * args.h (struct args): Define arg as array of [1] rather than [FLEX_ARRAY]. (ARGS_ABS_MIN): Unconditionally define as 1. (args_decl_list): Subtract 1 from N because we get one element from struct args. This macro should have subtracted the FLEX_ARRAY value.
* args: don't use alloca for const size cases.Kaz Kylheku2022-10-1511-38/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * args.h (args_decl_list): This macro now handles only constant values of N. It declares an anonyous container struct type which juxtaposes the struc args header with exactly N values. This is simply defined as a local variable without alloca. (args_decl_constsize): Like args_decl, but requiring a constant N; implemented via args_decl_list. (args_decl_list_dyn): New name for the old args_decl_list which calls alloca. No places in the code depend on this at all, except the definition of args_decl. (args_decl): Retargeted to args_decl_list_dyn. There is some inconsistency in the macro naming in that args_decl_constsize depends on args_decl_list, and args_decl depends on arg_decl_list_dyn. This was done to minimize diffs. Most direct uses of args_decl_list have a constant size, but a large number of args_decl uses do not have a constant size. * eval.c (op_catch): Use args_decl_constsize. * ffi.c (ffi_struct_in, ffi_struct_get, union_out): Likewise. * ftw.c (ftw_callback): Likewise. * lib.c (funcall, funcall1, funcall2, funcall3, funcall4, uniq, relate): Likewise. * socket.c (sockaddr_in_unpack, sockaddr_in6_unpack, sockaddr_un_unpack): Likewise. * stream.c (formatv): Likewise. * struct.c (struct_from_plist, struct_from_args, make_struct_lit): Likewise. * sysif.c (termios_unpack): Likewise. * time.c (broken_time_struct): Likewise.
* funcall: consolidate VM fun handling.Kaz Kylheku2022-10-141-34/+80
| | | | | | | * lib.c (funcall, funcall1, funcall2, funcall3, funcall4): Handle FVM case separately, regardless of the f.variadic flag. If the VM function is variadic, the call can still use the special cases.
* funcall: handle optargs in funcall helpers.Kaz Kylheku2022-10-141-8/+85
| | | | | | * lib.c (funcall, funcall1, funcall2, funcall3, funcall4): Handle some situations when the function is a built-in with optional args.
* funcall: don't route to generic_fun on optargs.Kaz Kylheku2022-10-141-5/+15
| | | | | | | | | | | | | | * lib.c (funcall, funcall1, funcall2, funcall3, funcall4): Do not go through the generic_funcall slow path just because the target function has optional arguments. It's possible that the call is supplying all of the required arguments. Let's try it like that and then if it doesn't work and there are optionals, check again and go the generic_funcall route. This might not be an overall improvement by itself, if we end up going to generic_funcall in more cases than not. However, this change paves the way for more changes: handling some cases of optargs in these helpers.
* New function: macroexpand-struct-clause.Kaz Kylheku2022-10-134-1/+57
| | | | | | | | | | | * stdlib/struct.tl (macroexpand-struct-clause): New function. * autoload.c (struct_set_entries): Autoload struct module on macroexpand-struct-clause. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New function: macroexpand-match.Kaz Kylheku2022-10-134-0/+57
| | | | | | | | | | | * stdlib/match.tl (macroexpand-match): New function. * autoload.c (match_set_entries): Autoload match module on macroexpand-match. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New function: macroexpand-place.Kaz Kylheku2022-10-134-8/+87
| | | | | | | | | | | | | | | * stdlib/place.tl (sys:pl-expand): Function renamed to macroexpand-place; env parameter becomes optional. (macroexpand-1-place): New function. (place-form-p, call-update-expander, call-clobber-expander, call-delete-expander): Follow rename. * autoload.c (place_set_entries): Register symbols macroexpand-place and macroexpand-1-place for autoload. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New function: macroexpand-params.Kaz Kylheku2022-10-135-1/+76
| | | | | | | | | | | | | | | * stdlib/pmac.tl (macroexpand-params): New function, implemented using newly exposed sys:expand-param-macro. * autoload.c (pmac_set_entries): Trigger pmac.tl autload on macroexpand-params symbol. * eval.c (eval_init): Register existing expand_param_macro function as sys:expand-param-macro. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* doc: revise lambda examples.Kaz Kylheku2022-10-121-12/+49
| | | | | | | * txr.1: Fix formatting issue with .IP headings; add more examples showing (. arg) notation, use of : argument for requesting defaulting, and demonstration of presence-indicating variables.
* structs: optional init-exprs now useful in :delegateKaz Kylheku2022-10-113-13/+53
| | | | | | | | | | | | * stdlib/struct.tl (:delegate): Handle the two-element form of the optional parameter, which specifies the usual initializing expression for the default value. This is just passed through as-is to the generated method. Diagnose if the three-element form occurs. * tests/012/oop.tl: Some new tests. * txr.1: Documented.
* json: support standard-style formatting.Kaz Kylheku2022-10-115-36/+127
| | | | | | | | | | | | | | | | | | | | * stream.c (standard_k, print_json_format_s): New symbol variables. (stream_init): New variables initialized. * stream.h (enum json_fmt): New enum. (standard_k, print_json_format_s): Declared. * lib.c (out_json_rec): Take enum json_fmt param, and pass it recursively. Printing for vector and dictionaries reacts to argument value. (out_json, put_json): Examine value of special var *print-json-format* and calculate enum json_fmt value from this. Pass to out_json_rec. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* streams: new function inc-indent-abs.Kaz Kylheku2022-10-114-4/+30
| | | | | | | | | | | * stream.c (inc_indent_abs): New function. (stream_init): inc-init-abs intrinsic registered. * stream.h (inc_indent_abs): Declared. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* put-json: restore indent on unwinding.Kaz Kylheku2022-10-111-1/+7
| | | | | | | | | | | | | | | | | | The following situation is observed in the listener. 1> (put-json #H(() (a 1))) {** print: invalid object a in JSON ** during evaluation at expr-1:1 of form (put-json #H(() (a 1))) 1> 1> An indent established in the aborted JSON print job has been left in the stream. * lib.c (put_json): Save the indent value also, not only the mode. Restore the indent mode and value on unwinding, not just on a normal exit from out_json_rec, similiarly to what obj_print does.
* New quip: future-proof.Kaz Kylheku2022-10-101-0/+1
| | | | * stdlib/quips.tl (%quips%): New entry.
* strings: revert caching of hash value.Kaz Kylheku2022-10-083-34/+4
| | | | | | | | | | | | | | | Research indicates that this is something useful in languages that abuse strings for implementing symbols. We have interned symbols. * lib.h (struct string): Remove hash member. * lib.c (string_own, string, string_utf8, mkustring, string_extend, replace_str, chr_str_set): Remove all initializations and updates of the removed hash member. * hash.c (equal_hash): Do not cache string hash value.
* doc: revise text under :mass-delegate.Kaz Kylheku2022-10-061-3/+5
| | | | * txr.1: Revise text, fixing a grammar error.
* hash: bugfix: don't trim seed to 32 bits.Kaz Kylheku2022-10-061-3/+2
| | | | | | | | | | | | | | This relates to the November 2021 commit 9108e9f8f4434fb29200b08a4b576df47c407c01: hash: 64 bit string and buffer hashing and seeds. In the hash constructor, a 32 bit cast was left behind, needlessly reducing the seed value to 32 bits on 64 bit platforms. * hash.c (do_make_hash): Don't convert the ucnum value to u32_t; just store it.
* doc: hash-eql and hash-equal return fixnum.Kaz Kylheku2022-10-061-0/+7
| | | | | | * txr.1: Document that hash-eql and hash-equal return a value in the range fixnum-min to fixnum-max.
* strings: take advantage of malloc_usable_sizeKaz Kylheku2022-10-065-16/+109
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On platforms which have the malloc_usable_size function, we don't have to store the allocated size of an object; malloc provides us the allocated size (which may be larger than we requested). Here we take advantage of this for strings. And since we don't have to store the string allocated size any more, we use that field for something else: storing the hash code (for seed zero). This can speed up some hashing operations. * configure (have_malloc_usable_size): New variable. Configure test for have_malloc_usable size. We have to try several header files, too. We set the configure variable HAVE_MALLOC_USABLE_SIZE, and possibly HAVE_MALLOC_H or HAVE_MALLOC_NP_H. * lib.h (struct string): If HAVE_MALLOC_USABLE_SIZE is true, we define a member called hash insetad of alloc. Also, we change alloc to cnum. * lib.c: Include <malloc_np.h> if HAVE_MALLOC_NP_H is defined. (string_own, string, string_utf8, mkstring, mkustring, init_str, string_extend, string_finish, string_set_code, string_get_code, length_str, replace_str, chr_str_set): Fix code for both cases. On platforms with malloc_usable_size, we have the allocated size from malloc, so we don't have to retrieve it from the object or store it. Any operations which mutate the string must reset the hash field to zero; zero means "hash has not been calculated". * hash.c (equal_hash): Just retrive a string's hash value, if it is nonzero, otherwise calculate, cache it and return it. * gc.c (mark_obj): The alloc member of struct string is a machine integer now; no need to mark it.
* doc: fix three broken syntax continuation lines.Kaz Kylheku2022-10-061-3/+3
| | | | | | | * txr.1: Syntax markup for file-get-buf, :mass-delegate and file-open options contains an extra space. This causes the syntax not to be correctly processed for the HTML version. nroff-based man page rendering and pdf are fine.
* Syntax: allow separator commas in numeric tokens.Kaz Kylheku2022-10-055-3646/+4220
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * parser.l (remove_char): New static function. (DIGSEP, XDIGSEP, NUMSEP, FLOSEP, XNUMSEP, ONUMSEP, BNUMSEP, ONUM, BNUM): New named lex patterns. (FLODOT): Use DIGSEP instead of DIG. (ONUM): Use ODIG instead of [0-7]. (BNUM): Use BDIG instead of [0-1]. (grammar): New rule for producing NUMBER from decimal token with commas based on BNUMSEP instead of BNUM. This is a copy and paste so that the BNUM rule doesn't deal with the comma removal, not to slow it down. For the octal, binary and hex, we just switch to BNUMSEP, ONUMSEP and XNUMSEP, so they all go through one case. Floating point numbers are also handled with a copy pasted case using FLOSEP. * tests/012/syntax.tl: New test cases. * txr.1: Documented. * genvim.txr (alpha-noe, digsep, hexsep, octsep, binsep): New variables. (txr_pnum, txr_xnum, txr_onum, txr_bnum, txr_num): Integrate separating commas. Some bugs fixed in txr_num, some simplifications, better txr_badnum pattern. * lex.yy.c.shipped: Updated.
* define-struct-clause: add tests.Kaz Kylheku2022-10-051-0/+65
| | | | * tets/012/oop-dsc.tl: New file.
* defstruct: consolidate finalizers into one lambda.Kaz Kylheku2022-10-051-6/+12
| | | | | | | | * stdlib/struct.tl (defstruct): Don't generate a separate finalizer registration for each :fini or :postfini; roll them into a single lambda in the correct order. Their object argument turns into a let block around each piece of code to bind that argument, like had been done for :init and :postinit.
* defstruct: refactor elimination of empty :init/:fini.Kaz Kylheku2022-10-051-18/+18
| | | | | | | | * stdlib/struct.tl (defstruct): When an :init, :fini, :postinit or :postfini has an empty body, do not push it onto its corresponding list. Then later we don't have to check for empty items when generating the code; we know only non-empty items are on the lists.
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