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* The mut macro should only be used for vectors or vector-like objectsKaz Kylheku2012-04-051-10/+6
| | | | | | | | | | | | | which hold direct references to other objects and must be used each time a mutation takes place. * eval.c (op_dohash): invocations of mut macro removed. Comment rewritten. * lib.c (sort_list): Use set macro for mutating assignment. Do not invoke mut on sorted list; it won't work anyway, because it doesn't mean what the code wants it to mean: that the list will be fully traversed during gc marking.
* * eval.c (op_modplace): push replaced with mpush (mutating push).Kaz Kylheku2012-04-031-1/+1
| | | | | | | | | | | | | | | * gc.c (gc_push): New function. * gc.h (gc_push): Declared. * hash.c (pushhash): Use mpush. * lib.c (push): Reverted to unsafe operation. TODO comment replaced with warning. (lazy_flatten_scan): push occurence commented as safe. (lazy_stream_func): Unsafe push replaced with mpush. * lib.h (mpush): New macro.
* * configure: Support a gen-gc configuration variable whichKaz Kylheku2012-04-031-7/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | causes CONFIG_GEN_GC to be defined as 1 in config.h. * eval.c (op_defvar, dwim_loc, op_modplace, transform_op): Handle mutating assignments via set macro. (op_dohash): Inform gc about mutated variables. TODO here. * filter.c (trie_add, trie_compress): Handle mutating assignments via set macro. * gc.c (BACKPTR_VEC_SIZE, FULL_GC_INTERVAL): New preprocessor symbols. (backptr, backptr_idx, partial_gc_count, full): New static variables. (make_obj): Initialize generation to zero. (gc): Added logic for deciding between full and partial gc. (gc_set, gc_mutated): New functions. * gc.h (gc_set, gc_mutated): Declared. * hash.c (hash_mark): Changed useless use of vecref_l to vecref. (gethash_f): Use set when assigning through *found since it is a possible mutation. * lib.c (car_l, cdr_l, vecref_l): Got rid of loc macro uses. Using the value properly is going to be the caller's responsibility. (push): push may be a mutation, so use set. (intern): Uset set to mutate a hash entry. (acons_new_l, aconsq_new_l): Use set when replacing *list. * lib.h (PTR_BIT): New preprocessor symbol. (obj_common): New macro for defining common object fields. type_t is split into two bitfields, half a pointer wide, allowing for generation to be represented. (struct any, struct cons, struct string, struct sym, struct package, struct func, struct vec, struct lazy_cons, struct cobj, struct env, struct bignum, struct flonum): Use obj_common macro to defined common fields. (loc): Macro removed. (set, mut): Macros conditionally defined for real functionality. (list_collect, list_collect_nconc, list_collect_append): Replace mutating operations with set. * match.c (dest_set, v_cat, v_output, v_filter): Replace mutating operations with set. * stream.c (string_in_get_line, string_in_get_char, strlist_out_put_string, strlist_out_put_char): Replace mutating operations with set. * unwind.c (uw_register_subtype): Replace mutating operation with set.
* Start of ground-work for ephemeral GC. We must add some abstractionKaz Kylheku2012-04-011-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | to places where we potentially assign a reference to a younger object inside a field located in an older object (chronological backreference) and also where we take the address of an object field, making it possible that the user of the address will do so. This patch does not take care of vectors. No, this is not an April Fool's joke. * eval.c (env_fbind, env_vbind, env_replace_vbind, lookup_var, lookup_sym_lisp1): Use set macro instead of assignment. * hash.c (hash_grow, set_hash_userdata, hash_next): Use set macro instead of assignment. * lib.c (rplaca, rplacd, string_extend, length_str, replace_str, rehome_sym, lazy_stream_func, lazy_str, lazy_str_force, lazy_str_force_upto, obj_init): Use set macro instead of assignment. (car_l, cdr_l): Use loc instead of address-of operator. * lib.h (set, loc): New macros.
* * arith.c (numeq): New function.Kaz Kylheku2012-03-291-0/+1
| | | | | | | | | | | | | | | | | (exptmod): Bugfix: was no normalizing the bignum, ouch. Also was reporting "non-integral operands" for other errors. * eval.c (eval_init): Registered = intrinsic function. * lib.c (numeqv): New function. * lib.h (numeq, numeqv): Declared. * txr.1: Documented expt, sqrt, isqrt, exptmod, fixnump, bignump, integerp, floatp, numberp, zerop, evenp, oddp, >, <, >=, <= and =. * txr.vim: Highlight =
* * arith.c (gcd): Allow zeros. Don't issue "non-integral"Kaz Kylheku2012-03-291-0/+3
| | | | | | | | | | | | | | | exception if MPI fails. (floorf, ceili): Map integer argument to itself. (tang, asine, acosi): New functions. * eval.c (eval_init): New intrinsics: tan, asin, acos. * lib.h (tang, asine, acosi): Declared. * txr.1: Documented gcd, abs, floor, ceil, sin, cos, tan asin, acos, atan, log, and exp. * txr.vim: Highlighting for tang, asine, acosi.
* * eval.c (eval_init): New intrinsic num-str registered.Kaz Kylheku2012-03-261-0/+1
| | | | | | | | | | | | | | | * filter.c (tonumber_k, tointeger_k, tofloat_k, hextoint_k): New keyword variables. (filter_init): New variables initialized; new filters registered. * filter.h (tonumber_k, tointeger_k, tofloat_k, hextoint_k): Declared. * lib.c (num_str): New function. * lib.h (num_str): Declared. * txr.1: New filters documented.
* * eval.c (eval_init): Register match-str and match-str-treeKaz Kylheku2012-03-241-0/+2
| | | | | | | | | | intrinsics. * lib.c (match_str, match_str_tree): Default position to zero. * txr.1: Doc stubs created. * txr.vim: Highlighting for match-str and match-str-tree.
* * arith.c (expo): New function.Kaz Kylheku2012-03-221-0/+1
| | | | | | | | | | * eval.c (eval_init): expo registered as intrinsic exp. * lib.h (expo): Declared. * txr.1: Added to stub heading. * txr.vim: Highlighting for exp.
* * eval.c (transform_op): use integerp instead of numberp.Kaz Kylheku2012-03-221-1/+1
| | | | | Not all numbers are integers now, and that situation requires an integer.
* Fix sqrt confusion. There must be a separate isqrtKaz Kylheku2012-03-221-1/+2
| | | | | | | | | | | | | | | | | for the integer square root. * arith.c (sqroot_fixnum): Renamed back to isqrt_fixnum. (sqroot): Rewritten to handle only floating-point square root. (isqrt): New function, based on previous sqroot, handles only integers. * eval.c (eval_init): New intrinsic, isqrt. * lib.h (isqrt): New declaration. * txr.1: Doc stubs. * txr.vim: Highlighting for isqrt.
* * arith.c (floorf, ceili, sine, cosi, atang, loga): New functions.Kaz Kylheku2012-03-221-0/+6
| | | | | | | | | | | * eval.c (eval_init): New intrinsic functions registered: floor, ceil, sin, cons, atan, log. * lib.h (floorf, ceili, sine, cosi, atang, loga): Declared. * txr.1: Doc stub section for new functions. * txr.vim: Highighting added.
* * arith.c (to_float): New static function.Kaz Kylheku2012-03-221-1/+1
| | | | | | | | | | | | | (divi): Uses to_float. (zerop, gt, lt, ge, le, expt): Floating support. (isqrt_fixnum): Static function renamed to sqroot_fixnum. (isqrt): Renamed to sqroot. Floating support. (evenp, oddp, exptmod, gcd): Work with integers, not floats. * eval.c (eval_init): intrinsic registration of sqrt follows rename of isqrt to sqroot. * lib.h (isqrt): Declaration replaced.
* * arith.c (divi): New function.Kaz Kylheku2012-03-211-0/+1
| | | | | | | | | | * eval.c (eval_init): divi registered as / intrinsic. * lib.h (divi): Declared. * txr.1: divi added to stub heading. * txr.vim: / operator highlighted.
* * arith.c (flo_int): New function.Kaz Kylheku2012-03-201-0/+1
| | | | | | | | | | | * eval.c (eval_init): flo-int registered as intrinsic. * lib.h (flo_int): Declared. * mpi-patches/series: Added mpi-to-double to patch stack. (mp_to_double): New MPI function. * mpi-patches/mpi-to-double: New file.
* * arith.c (plus): Optimization: use num_fast whenKaz Kylheku2012-03-201-0/+1
| | | | | | | | | | | | | | | | result is in the fixnum range. Implemented FLNUM cases, except for adding a FLNUM to BGNUM. (minus, mul): Use num_fast when the cnum value is in the fixnum range. (int_flo): New function. * eval.c (eval_init): Register int-flo intrinsic. * lib.c (c_flo): New function. * lib.h (TYPE_SHIFT, TYPE_PAIR): New macros, carried over from the lazy strings branch. (c_flo, int_flo): Declared.
* * configure (uintptr): New variable. Indicates whether unsignedKaz Kylheku2012-03-191-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | version of intptr_t is available and should be generated in config.h as uintptr_t. * eval.c (eval_init): New intrinsic functions floatp, integerp, flo-str. * gc.c (finalize): Handle FLNUM case. Rearranged cases so that all trivially returning cases are together. (mark): Handle FLNUM case. * hash.c (hash_double): New function. (equal_hash): Handle FLNUM via hash_double. (eql_hash): Likewise. * lib.c: <math.h> is included. (float_s): New symbol variable. (code2type, equal): Handle FLNUM case in switch. (integerp): New function; does the same thing as integerp before. (numberp): Returns t for floats. (flo, floatp, flo_str): New functions. (obj_init): Initialize new float_s variable. (obj_print, obj_pprint): Handle FLNUM case in switch. Printing does not work yet; needs work in stream.c. * lib.h (enum type): New enumeration FLNUM. (struct flonum): New struct type. (union obj): New member, fl. (float_s, flo, floatp, integerp, flo_str): Declared. * parser.l (FLO): New token pattern definition. Scans to a NUMBER token. Corrected uses of yylval.num to yylval.val. * parser.y (%union): Removed num member from yystype.
* * eval.c (eval_init): url_decode has two parameters now,Kaz Kylheku2012-03-181-2/+2
| | | | | | | | | | | | | | | | | | so we make the second one optional. * filter.c (topercent_k, frompercent_k): New keyword variables. (url_encode, url_decode): Take a second parameter, space_plus. This determines whether or not to apply the rule that a space encodes as a + character. (filter_init): Initialize new keyword variables, and register :topercent and :frompercent filters. Fix the previous registrations of :tourl and :fromurl using currying. * filter.h (urlencode, urldecode): Declarations updated. (topercent_k, frompercent_k): Declared. * txr.1: Documented.
* Changing type function to not blow up on nil, which makes a lot of codeKaz Kylheku2012-03-171-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | simpler. A pseudo type code is introduced called NIL with value 0. * lib.h (enum type): New enumeration value, NIL. (type): Function accepts object nil and maps it to code NIL. * eval.c (dwim_loc, op_dwim): test for nil obj and goto hack is gone, just handle NIL in the switch. * gc.c (make_obj, mark): Handle new NIL type code in switch. * hash.c (equal_hash): Handle NIL in the switch instead of nil test. * lib.c (code2type): Map new NIL type code to null. (typeof, typecheck): Code simplified. (class_check, car): Move nil test into switch. (eql, equal, consp, bignump, stringp, lazy_stringp, symbolp, functionp, vectorp, cobjp): Simplified. (length, sub, ref, refset, replace, obj_print, obj_pprint): Handle NIL in switch instead of nil test. goto hack removed from refset. * match.c (do_match_line, do_output_line): switch condition simplified. * regex.c (regexp): Simplified. (regex_nfa): Assert condition simplified.
* * eval.c (eval_init): New intrinsic functionsKaz Kylheku2012-03-161-0/+5
| | | | | | | | | | | | | | | | | | chain, andf, orf, iff. * lib.c (chainv): New function. (do_and, do_or): Generalized to handle functions of any arguments via apply. (andf, orf): Turn do_and and do_or into variadic function instead of a monadic function. (do_iff): New static function. (andv, orv, iff): New functions. * lib.h (chainv, andv, orv, iff): New functions declared. * txr.1: Doc stubs created. * txr.vim: Updated.
* Version 61txr-61Kaz Kylheku2012-03-151-1/+1
| | | | | | | | | | | | | | | | | | | | | * txr.c (version): Bumped. * txr.1: Bumped version and set date. * configure (txr_ver): Bumped. * eval.c (op_modplace): Fix warning about uninitialized variable. No bug. * filter.c: gcc compilation regresion: missing <stdio.h> breaks inclusion of "stream.h" header. Strangely, didn't show up when configured for compiling with g++ on Ubuntu. * match.c (match_filter): Fixed ununsed variable warning. * txr.vim: Bunch of missing keywords added. * dep.mk: Regenerated.
* Support quasiquoting over vectors also, and a bugfix for hashKaz Kylheku2012-03-141-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | quasiquoting. We cannot use the same symbol for the literal form from the parser, and for the expanded form, because this creates a confusion when there are multiple nestings of quasiquote expansion. * eval.c (vector_lit_s, vector_list_s, hash_lit_s): New symbol variables. (hash_construct_s): Relocated here from hash.c. (expand_qquote): Part of bugfix: look for hash_lit_s instead of has_construct_s. Translate to a hash_construct_s form which is no longer recognizes as a hash literal. Implementing recognition of a quasiquote vector literal, handled similarly. (eval_init): Initialize vector_lit_s, vector_list_s, hash_list_s and hash_lit_s. Use vector_list_s when registering vector_list function. * eval.h (vector_lit_s, vector_list_s, hash_lit_s, hash_constuct_s): Declared. * hash.c (hash_construct_s): Variable removed and relocated into eval.c. (hash_init): Initialization of hash_construct_s removed. * hash.h (hash_construct_s): Declaration removed. * parser.y: (vector): Action updated to generate a (vec-lit ...) form if the object contains unquotes, otherwise generate a vector object. (hash): Generate hash-lit form, not a hash-construct form.
* Allow quasi-quoting over hash table literals,Kaz Kylheku2012-03-141-0/+5
| | | | | | | | | | | | | | | | | | | | to express dynamic hash table construction * eval.c (expand_qquote): Recognize hash-construct forms: expand the hash arguments and pairs separately, then rewrite to a new hash-construct form. (eval-init): hash-construct intrinsic function added. * hash.c (hash_construct_s): New symbol variable. (hash_construct): New function. (hash_init): Initialize hash_construct_s. * hash.h (hash_construct_s, hash_construct): Declared. * parser.y (hash): Rule rewritten to emit either a literal hash table object, or a hash-construct form, based on whether quasiquote unquotes occur within the syntax. (hash_from_notation): Function removed.
* Implementing URL filtering.Kaz Kylheku2012-03-131-0/+4
| | | | | | | | | | | | | | | | * eval.c (eval_init): New intrinsic functions: url-encode, url-decode. * filter.c (tourl_k, fromurl_k): New keyword variables. (is_url_reserved, digit_value): New static functions. (url_encode, url_decode): New functions. (filter_init): Intialize new keyword variables and register new :tourl and :fromurl filters. * filter.h (tourl_k, fromurl_k, url_encode, url_decode): Declared. * txr.1: Updated. * txr.vim: Likewise.
* Bug #35718. Workaround good enough to get some code working.Kaz Kylheku2012-03-041-1/+14
| | | | | | | | | | | | * eval.c (cons_find): New function. (expand_op): Use cons_find rather than tree_find to look for rest_gensym. * regex.c (regsub): Rearranged arguments so that the string is last. This is better for partial evaluaton via the op operator. * regex.h (regsub): Updated declaration.
* * eval.c (eval_init): New intrinsic function, regsub.Kaz Kylheku2012-03-041-0/+1
| | | | | | | | * regex.c (regsub): New function. * regex.h (regsub): Declared. * txr.1: Doc stub added.
* Version 60Kaz Kylheku2012-03-041-2/+16
| | | | | | | | | | | | | | | | | | | * txr.c (version): Bumped. * txr.1: Bumped version and set date. * configure (txr_ver): Bumped. * RELNOTES: Updated. * txr.vim: Handle : symbol properly. * eval.c (op_defun): Bugfix: documentation says that defun supports the same parameter list as lambda, and that is the intent. But this was broken, since op_defun was expecting the parameter list to be a proper list containing only bindable symbols, ruling out the use of the consing dot for rest parameter as well as the colon keyword symbol for optional parmeters.
* * eval.c (eval_init): Expose remq, remql and remqual.Kaz Kylheku2012-03-031-0/+3
| | | | * txr.1: Documented.
* Fix the issue properly, once and for all, of how to determineKaz Kylheku2012-02-271-0/+1
| | | | | | | | | | | | | | | | that output has taken place and suppress the printing of bindings. * debug.c (debug): std_output replaced with std_debug. * eval.c (eval_init): Registered new *stddebug* variable. * stream.c (std_debug): New variable. (stdio_put_string): Check that stream is other than std_debug, to determine that output has taken place. * stream.h (std_debug): Declared. * txr.1: Added *stddebug* to documentation stub heading.
* * arith.c: Updated copyright year.Kaz Kylheku2012-02-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * arith.h: Likewise. * debug.c: Added copyright header. * debug.h: Updated copyright year. * eval.c: Likewise. * eval.h: Likewise. * filter.c: Likewise. * filter.h: Likewise. * gc.c: Likewise. * gc.h: Likewise. * hash.c: Likewise. * hash.h: Likewise. * lib.c: Likewise. * lib.h: Likewise. * match.c: Likewise. * match.h: Likewise. * parser.h: Likewise. * regex.c: Likewise. * regex.h: Likewise. * stream.c: Likewise. * stream.h: Likewise. * txr.c: Likewise, and e-mail address. * txr.h: Updated copyright year. * unwind.c: Likewise. * unwind.h: Likewise.
* * eval.c (eval_init): New put-byte function interned.Kaz Kylheku2012-02-251-0/+1
| | | | | | | | | | * stream.c (struct strm_ops): New member, put_byte. (stdio_put_byte): New function. (stdio_ops, pipe_ops, string_in_ops, byte_in_ops, string_out_ops, strlist_out_ops, dir_ops): Updated. (put_byte): New function. * stream.h (put_byte): Declared.
* Version 58txr-58Kaz Kylheku2012-02-251-1/+1
| | | | | | | | | | | | | | | | | * txr.c (version): Bumped. * txr.1: Bumped version and set date. * configure (txr_ver): Bumped. * RELNOTES: Updated. * eval.c (eval_init): Updated. * rand.c (rand): Function renamed to rnd due to a clash with standard C library (that does not show up when compiling as C++). * rand.h (rand): Declaration renamed to rnd.
* * debug.c (debug): Use new way of getting line number.Kaz Kylheku2012-02-241-1/+1
| | | | | | | | | | | | | | * eval.c (eval_error): Use source_loc_str to get source location. * match.c (debuglf, sem_err, file_err): Likewise. * parser.h (source_loc_str): Declared. * parser.l (parse_init): form_to_ln_hash must be equal based now. * parser.y (rl): Store new form of read-time source location info. * txr.1: Documented load.
* * eval.c (dwim_loc): del operator's return value is theKaz Kylheku2012-02-221-8/+15
| | | | | | | | deleted range of values. Missing del cases added for single index cases. * lib.c (quicksort): Fix pivot selection one more time. (length): Fix bad argument in "not a sequence" error.
* * eval.c (del_s): New symbol variable.Kaz Kylheku2012-02-221-35/+84
| | | | | | | | | | | | | | | | | | | (eval_error): nostatic added to suppress a g++ warning. (dwim_loc): Takes new value as the original unevaluated form so it can control evaluation. Support for del operator added. (op_modplace): Bugfixes: new value form was being unconditionally evaluated and out of order w.r.t. other forms. Now there is left to right order. The form is evaluated later, since for most operators it is on the right, with the exception of push. dwim places can now optionally control the evaluation of newform. del operator supported in gethash case as a special case. error case added for del: if it's not handled in gethash or dwim_loc, it is an error. (eval_init): del_s initialized, and del operator added to table. * txr.vim: syntax highlighting for del. * txr.1: Documented del.
* * eval.c (eval_init): Intrinsic bindings for sub, ref, refsetKaz Kylheku2012-02-221-0/+5
| | | | | | | | | | | | | | | | and replace. * lib.c (do_sort): Static function renamed to sort_list. (swap, quicksort, sort_vec): New static functions. (sort): Made generic over lists, vectors and strings. (refset): New function. * lib.h (sort): Declaration updated (parameter name change). (refset): Declared. * txr.1: Mention refset. * txr.vim: Updated with refset.
* * eval.c (eval_init): Third argument of gethash becomes optional.Kaz Kylheku2012-02-211-1/+1
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* Introducing optional arguments.Kaz Kylheku2012-02-211-53/+92
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * debug.c (help, show_bindings): put_string arguments reversed. * eval.c (bind_args): Support colon notation in interpreted function lambda lists for optional arguments. Improved error checking. (apply): Allow optional arguments to be left out. (dwim_loc): Reversed arguments to replace_str, replace_vec, replace_list. (eval_init): Numerous intrinsics now have arguments that are optional. New function rand introduced which reverses arguments relative to random. New intrinsic function hash introduced for alternative construction of hashes. * gc.c (sweep): Reversed arguments to put_char. * hash.c (weak_keys_k, weak_vals_k, equal_based_k): New keyword symbol variables. (hashv): New function. (hash_init): Intern new symbols. * hash.h (weak_keys_k, weak_vals_k, equal_based_k, hashv): Declared. * lib.c (colon_k): New keyword symbol variable. (replace_list, replace_str, replace_vec): Arguments rearranged. (tree_find): testfun becomes optional argument. (int_str): base becomes optional argument. (func_f0, func_f1, func_f2, func_f3, func_f4, func_n0, func_n1, func_n2, func_n3, func_n4, func_f0v, func_f1v, func_f2v, func_f3v, func_f4v, func_n0v, func_n1v, func_n2v, func_n3v, func_n4v, func_interp): Initialize optargs to zero. (func_n0o, func_n1o, func_n2o, func_n3o, func_n4o): New functions. (cobj_print_op): Reversed arguments to put_string. (find): testfun and keyfun become optional arguments. (replace): Parameters rearranged and arguments rearranged in calls to replace_list, replace_str and replace_vec. (obj_init): colon_k initialized. (obj_print, obj_pprint): Arguments reversed, and stream defaults to std_output. Arguments reversed in calls to put_char and put_string. (dump): Arguments reversed in call to put_char. * lib.h (struct func): sizes of minparam, fixparam bitfields adjusted. New bitfield optargs. New unnamed bitfield added so the previous ones add up to 16 bits. (colon_k): Declared. (func_n0o, func_n1o, func_n2o, func_n3o, func_n4o): Declared. (replace_list, replace_str, replace_vec, replace): Declarations updated. * match.c (debuglf, dump_shell_string, dump_byte_string, dump_var, do_output_line, extract): Reversed arguments to put_char and
* Allow braced output variables to actually be arbitrary substitutions.Kaz Kylheku2012-02-181-21/+15
| | | | | | | | | | | | | | * eval.c (subst_vars): Treat the variable as an arbitrary expression rather than just a symbol. * match.c (subst_vars): Likewise. * parser.y (o_var): Further simplification. The first item in an output var is an expr and not an IDENT. * txr.1: Updated. * txr.vim: Likewise.
* * eval.c (dwim_loc): 2012-02-13 fix didn't do it.Kaz Kylheku2012-02-171-6/+3
| | | | | Here is a simpler way. We can let nil be treated as a list with a simple goto. This solves all cases.
* * eval.c (eval_init): Register match-fun.Kaz Kylheku2012-02-161-0/+2
| | | | | | | | | | | | | | | * match.c (v_do): Store match context. (match_fun): New function. * match.h (match_fun): Declared. * stream.c (streamp): New function. * stream.h (streamp): Declared. * txr.1: Stub section for match-fun. * txr.vim: Highlight match-fun.
* * eval.c (op_catch): Treat the nil exception object as an emptyKaz Kylheku2012-02-161-1/+1
| | | | | | | | | list, and not the atom nil. * match.c (v_try): Do not transform an atomic exception x into the list ((t . x)). Just to (x). This (t . x) representation is a vestige of from the time when the exception consisted of the old-style return values from txeval.
* TXR Lisp gets exception handling.Kaz Kylheku2012-02-161-0/+71
| | | | | | | | | | | | | | | | | * eval.c (op_catch, expand_catch_clause, expand_catch): New static functions. (expand): Handle catch operator. (eval_init): Added catch operator to op_table, and registered new functions throw, throwf and error. * txr.1: Documented catch operator and created stub section for throw, throwf and error. * txr.vim: Updated. * unwind.c (uw_throwfv, uw_errorfv): New functions. * unwind.h (uw_throwfv, uw_errorfv): Declared.
* * eval.c (rangev_func, rangev, range_star_v_func,Kaz Kylheku2012-02-141-6/+8
| | | | | range_star_v): Regression: handle the case where the range is open-ended (to is nil).
* * eval.c (rangev): If a descending range is specified,Kaz Kylheku2012-02-141-1/+41
| | | | | | | | | | | but the step is omitted, the step should be negative one rather than one. (range_star_v_func, range_star_v): New static functions. (eval_init): New function, range*, registered. * txr.1: Stub section for range is also for range*. * txr.vim: Recognize range* function.
* * eval.c (rangev_func): Improved termination test. The sequenceKaz Kylheku2012-02-141-5/+8
| | | | not only if it achieves the endpoint, but if it crosses it.
* * eval.c (dwim_loc): Allow assignment to the dwim place when itKaz Kylheku2012-02-131-3/+9
| | | | | | evaluates to nil, by building a form targetting the place, and recursing into op_modplace. Also, optimization: don't use eval on a form built from the operator; just go to op_modplace directly.
* * eval.c (subst_vars): Handle lone symbols (not wrappedKaz Kylheku2012-02-131-0/+14
| | | | | | | | | | | | in sys::var form) as variables. This allows interpretation of metanums in quasiliterals, because these are replaced by variables in the op expander. * parser.l: Recognize METANUM in QSILIT state. * parser.y (quasi_item): METANUM parsed in quasiliteral. * txr.vim: Metanums highlighted properly.
* * eval.c (dwim_loc, op_dwim): Bugfix: hash indexing requiringKaz Kylheku2012-02-131-2/+2
| | | | at least two arguments, rather than at least one.
* Task #11486: continuation. Take into account base positionKaz Kylheku2012-02-121-1/+1
| | | | | | | | | | | | | | | | in debug reporting. * debug.c (debug): New argument, base. * debug.h (debug_check): New argument, base. (debug): Declaration updated. * eval.c (do_eval): Pass new argument of debug_check as nil. * match.c (LOG_MISMATCH, LOG_MATCH): Take into account base when displaying character position. (do_match_line): Pass base position to debug_check. (match_files): Pass nil as base to debug_check.
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