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* lazy-str-get-trailing-list: spurious empty string issue.Kaz Kylheku2022-01-041-27/+138
| | | | | | | | | | | | | | | | | | | | | | | | | | * lib.c (lazy_str_get_trailing_list): Remove the spurious empty string caused by splitting on the terminator. Whenever the materialized prefix is not-empty, and there is a non-empty terminator, the prefix necessarily ends in the termintator. If we split on the terminator, the list of pieces ends in in an empty string, which is undesirable. This has to be subject to compat, unfortunately; it's a very visible behavior that affects the continuation of line-based matching after the @(freeform) directive. * tests/006/freeform-5.txr: With this fix, we no longer have to match the spurious blank line coming from @(freeform). * tests/015/lazy-str.tl: New file. * txr.1: Updated documentation with compat notes. There was some outright incorrect text describing lazy-str-get-trailing-list. Also, the lazy-str-force-upto and lazy-str-force were under-documented. The return value of the former was not completely described: that it returns t in the other case when not returning nil. It wasn't mentioned that the functions observe the limit-count. Moreover, the exact algorithm for forcing is now documented.
* ffi: allow enumed bitfield.Kaz Kylheku2022-01-021-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * ffi.c (ffi_type_copy): Function moved earlier in file without change. (ffi_type_copy_new_ops): New stati function. (make_ffi_type_enum): Do not create a new type object using cobj; copy the existing base_type, and then tweak its properties, just like what is done with bool. Thus if base_type is a bitfield, the enum will be a bitfield. Add check against doign this to anything but an FFI_KIND_NUM, with the awareness that this does include floating-point types. Since tft is now a copy, we no longer have to copy a number of things from btft. We do set he kind field to FFI_KIND_ENUM. (ffi_type_compile): In the two bitfield cases, we now calculate the mask field for the bitfield type (leaving the shift at zero). The struct or union type into which the bitfield is embedded will still re-calculate this. The reason is that when an (enumed (bit ...) ...) type is defined, it constructs hash tables for converting between the symbolic and numeric values. It calls the put function of the underlying type to test whether each enumeration value can be converted (i.e. is in range). So the bitfield type must have a valid mask at that time, or else it will reject every nonzero value as being out of range for the bitfield. I'm also replacing the max_int variable with bits_int. Since bitfields are restricted to no wider than int, why pretend? * tests/017/ffi-misc.tl: New test cases. * txr.1: Documented.
* doc: "sme" typo under :delegate.Kaz Kylheku2021-12-301-1/+1
| | | | | | * txr.1: Fix sme -> same. This creeps in because "sme" is whitelisted due to the @(sme ...) pattern notation (start/middle/end).
* doc: spurious reference to car in search tree section.Kaz Kylheku2021-12-281-1/+0
| | | | | * txr.1: Remove spurious car place syntax from syntax section of key, left and right functions.
* Version 273.txr-273Kaz Kylheku2021-12-281-3/+3
| | | | | | | | | | | | * RELNOTES: Updated. * configure (txr_ver): Bumped version. * stdlib/ver.tl (lib-version): Bumped. * txr.1: Bumped version and date. * txr.vim, tl.vim: Regenerated.
* doc: document *struct-clause-expander*.Kaz Kylheku2021-12-271-0/+30
| | | | | | | * txr.1: New section about special variable *struct-clause-expander*. * stdlib/doc-syms.tl: Updated.
* doc: stray reference to *place-macro*.Kaz Kylheku2021-12-271-1/+1
| | | | | * txr.1: In description of *match-macro* fix stray copy-paste referring to *place-macro*.
* match: allow bound variables with regex modifier.Kaz Kylheku2021-12-271-1/+20
| | | | | | | | | * stdlib/match.tl (expand-quasi-match): Add regex cases with bound variable. * tests/011/patmatch.tl: Test cases for this. * txr.1: Documented.
* doc: problems in qualisiteral pattern section.Kaz Kylheku2021-12-271-4/+2
| | | | | | | | * txr.1: Fix wrong word and number agreement: the sentence is about boudn variables. Fix bungled description of bound variable substitution; this should be a .meIP to head its own section, not in line meta-typesetting; plus the syntax must refer to a {P} and show the backticks.
* txr: do not ignore regex in positive match.Kaz Kylheku2021-12-271-5/+12
| | | | | | | | | | | | | | | | | * match.c (h_var): Refactor the logic here a bit. Without regard for whether the variable has a value, we dispatch the regex, fixed field and function cases. These handle the binding against the existing value. Then before all other cases, we check for the existing value and convert that to a literal text match. The effect of this is that now the regular expression is processed even if the variable has a value. * tests/010/span-var.txr: Last two test cases hardened a bit so they cannot fall through to a successful exit, if they invoke the wrong case. This is not related to this change. New test cases for regex span. * txr.1: Updated documentation and compatibility notes.
* txr: function span variable must match existing value.Kaz Kylheku2021-12-271-19/+34
| | | | | | | | | | | | | | | | | | | | * match.c (h_var_compat): New function; verbatim copy of existing h_var prior to this commit. (h_var): If a variable has an existing binding, but is a function spanning match, do not substitute it with text. Handle it with the ordinary case, in which we now use dest_bind instead of cons. (v_var): Similarly, here, we must also use dest_bind, rather than always freshly binding the variable. (match_compat_fixup): For 272 compatibility, substitute h_var_compat for h_var in the horizontal directive table. * tests/010/span-var.txr: New test cases. * txr.1: Documentation updated and also improved overall. The behavior when a variable has an existing value is clarified for the regex and fixed field case. Also update and condense compat notes for 272.
* txr: allow variable to span vertical function.Kaz Kylheku2021-12-261-2/+33
| | | | | | | | | | | | | | | * match.c (v_var_compat, v_var): New static functions. (match_files): No longer recognize v_var specially; it is now handled via vertical table. (dir_tables_init): Register a vertical sys:var directive also via v_var function. (match_compat_fixup): New function. * txr.c (compat): Call match_compat_fixup. * tests/010/span-var.txr: New file. * txr.1: Documented.
* new feature: :mass-delegate struct clause macro.Kaz Kylheku2021-12-231-0/+152
| | | | | | | | | | | | | | | With :mass-delegate, it is possible to generate delegation methods in bulk. All of the methods of a struct type can be mirrored by delegates in another struct type just by writing a single :mass-delegate clause. * stdlib/struct.tlk (:mass-delegate): New struct clause macro. * tests/012/oop.tl: New tests. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* new feature: defstruct clause macros.Kaz Kylheku2021-12-221-0/+240
| | | | | | | | | | | | | | | | | | | | | | * lisplib.c (struct_set_entries): Trigger autoload on new symbols define-struct-clause and *struct-clause-expander*. * stdlib/struct.tl (*struct-clause-expander*): New variable. (defstruct): expand-slot local function now returns list of expanded slots, not a single slot; every case in the tree-case is converted to return a list. The syntax of a slot clause is first expanded through *struct-clause-expander hash; if that works then the resulting list is further scanned for expansions. (define-struct-clause): New macro. (:delegate): New struct clause defined with define-struct-clause. Provides single-slot delegation. * tests/012/oop.tl: Tests for :delegate. * txr.1: Documented define-struct-clause and :delegate. * stdlib/doc-syms.tl: Updated.
* The pairlis function comes to TXR Lisp.Kaz Kylheku2021-12-221-0/+57
| | | | | | | | | | | | * 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.
* New functions: subq, subql, subqual and subst.Kaz Kylheku2021-12-221-0/+86
| | | | | | | | | | | | | | | * 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.
* product/arithmetic each: missing block nil.Kaz Kylheku2021-12-201-31/+38
| | | | | | | | | | | | | | | | | | | * stdlib/arith-each.tl (sys:vars-check): New function, copy and pasted from each-prod.tl. (sys:arith-each): New macro. (sum-each, sum-each*, mul-each, mul-each*): Reworked using sys:arith-each macro. This macro uses logic borrowed from a stripped-down expand-each in the compiler. * stdlib/each-prod.tl (sys:expand-each-prod, sys:expand-arith-each-prod*): Add the block nil around the mapping call, taking care that the initialization forms are evaluated outside of the block, and their values bound to gensyms that then form the function arguments. * txr.1: Document the missing requirements for all the affected macros that there must be an anonymous block around the body, which, if used, determines the return value.
* tree: new functions for priority queue operation.Kaz Kylheku2021-12-181-0/+56
| | | | | | | | | | | | | | | | * tree.c (tree_min_node, tree_min, tree_del_min_node, tree_del_min): New functions. (tree_init): tree-min-node, tree-min, tree-del-min-node, tree-del-min: New intrinsics registered. * tree.h (tree_min_node, tree_min, tree_del_min_node, tree_del_min): Declared. * txr.1: Documented. * tests/010/tree.tl: New tests. * stdlib/doc-syms.tl: Updated.
* tree: support for duplicate keys.Kaz Kylheku2021-12-171-7/+149
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * tree.c (tr_insert): New argument for allowing duplicate. If it is true, suppresses the case of replacing a node, causing the logic to fall through to traversing right, so the duplicate key effectively looks like it is greater than the existing duplicates, and gets inserted as the rightmost duplicate. (tr_do_delete_specific, tr_delete_specific): New static functions. (tree_insert_node): New parameter, passed to tr_insert. (tree_insert): New parameter, passed to tree_insert_node. (tree_delete_specific_node): New function. (tree): New parameter to allow duplicate keys in the elements sequence. (tree_construct): Pass t to tree to allow duplicate elements. (tree_init): Update registrations of tree, tree-insert and tree-insert-node. Register tree-delete-specific-node function. * tree.h (tree, tree_insert_node, tree_insert): Declarations updated. (tree_delete_specific_node): Declared. * lib.c (seq): Pass t argument to tree_insert, allowing duplicates. * parser.c (circ_backpatch): Likewise. * parser.y (tree): Pass t to new argument of tree, so duplicates are preserved in the element list of the #T literal. * y.tab.c.shipped: Updated. * tests/010/tree.tl: Test cases for duplicate keys. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* tree-count: new function.Kaz Kylheku2021-12-171-0/+12
| | | | | | | | | | | | | * tree.c (tree_count): New function. (tree_init): tree-count intrinsic registered. * tree.h (tree_count): Declared. * lib.c (length): Support search tree argument via tree_count. * tests/010/tree.tl: Test cases for tree-count, indirectly via len. * txr.1: Documented.
* each-match macro family: missing anon block.Kaz Kylheku2021-12-081-2/+14
| | | | | | | | | | | | | | | | | * txr.1: Adding the missing requirement that each-match and the other macros in that family must have an implicit anonymous block around the body forms. This is a requirements bug, effectively: the programmer expects these operators to be consistent with the each operator, as part of the same family. * match.tl (each-match-expander): Implement the requirement. Since we are using mapping functions, we must use temporary variables: the evaluation of the expressions which produce the sequence argument values to the mapping functions must be outside of the anonymous block. The block must surround only the function call. * tests/011/patmatch.tl: Add small test case covering this.
* rot, nrot: new functions.Kaz Kylheku2021-12-071-0/+113
| | | | | | | | | | | | | | * 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.
* ret, aret: take one argument, as documented.Kaz Kylheku2021-12-071-2/+2
| | | | | | | | | | | | | | | | * stdlib/op.tl (ret, aret): Simplify implementation, without progn or @rest, or interpolation of multiple args. We use identity* to allow the resulting function to allow and ignore multiple arguments. * txr.1: Strangely, an an edit in commit 99131c676, on Sep 26, 2014, reverted the more accurate equivalence (ret x) <--> (op identity (progn @rest x)) back to the original documentation (ret x) <--> (op identity x) which matched an older implementation. Anyway, that's moot now; the documentation is updated to give the new equivalence via identity*.
* tuples*: new function.Kaz Kylheku2021-12-041-0/+66
| | | | | | | | | | | | | | | * 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.
* buffers: use unbuffered I/O in convenience functions.Kaz Kylheku2021-11-171-0/+6
| | | | | | | | * stdlib/getput.tl (file-get-buf, command-get-buf): If the number of bytes to read is specified, we use an unbuffered stream. A buffered stream can read more bytes in order to fill a buffer, which is undesirable when dealing with a device or pipe.
* hash: 64 bit string and buffer hashing and seeds.Kaz Kylheku2021-11-171-5/+9
| | | | | | | | | | | | | | | | | | * hash.c (randbox, hash_c_str, hash_buf): Separate implementation for 64 bit pointers, using 64 bit random values, and producing a 64 bit hash, taking in a 64 bit seed. (gen_hash_seed): Use time_sec_nsec to get nanoseconds. On 64 bit, put together the seed differently to generate a wider value. * tests/009/json.txr: Change from hash tables to lists, so the order of the output doesn't change between 64 and 32 bits, due to the different string hashing. * tests/009/json.expected: Updated. * txr.1: Documented that seeds are up to 64 bits, but with possibly only the lower 32 bits being used.
* doc: fix misuses of << formatting code.Kaz Kylheku2021-11-161-8/+8
| | | | | * txr.1: Fix bunch of instances of formatting like << foo) which should be << foo ).
* Version 272.txr-272Kaz Kylheku2021-11-111-3/+3
| | | | | | | | | | | | * RELNOTES: Updated. * configure (txr_ver): Bumped version. * stdlib/ver.tl (lib-version): Bumped. * txr.1: Bumped version and date. * txr.vim, tl.vim: Regenerated.
* doc: mention :weak-or and :weak-and in syntax.Kaz Kylheku2021-11-081-1/+1
| | | | | * txr.1: The syntax synopsis for the hash function neglects to mention the :weak-or and :weak-and symbols.
* doc: fix :weak-values typo.Kaz Kylheku2021-11-081-4/+4
| | | | | | * txr.1: The hash construction keyword is :weak-vals; the keyword :weak-values is not recognized, yet mentioned in three places in the documentation.
* doc: gensym documentation.Kaz Kylheku2021-11-031-15/+17
| | | | | * txr.1: The gensym function's argument doesn't have to be a string. Plus other wording fixes.
* doc: spelling, doc-syms refresh.Kaz Kylheku2021-11-031-2/+2
| | | | | | | | * txr.1: Fix spelling errors that have crept in due to read-once and the quasiliteral fixes to matching. * stdlib/doc-syms.tl: Forgotten refresh, needed by the fix to the wrong random-float-inc name.
* match: unquoted quasiliteral patterns don't work.Kaz Kylheku2021-10-261-0/+26
| | | | | | * tests/011/patmatch.tl: Add failing test cases. * txr.1: Document desired requirements.
* ifa: take advantage of read-once.Kaz Kylheku2021-10-261-1/+7
| | | | | | | | | | * stdlib/ifa.tl (ifa): When the form bound to the it anaphoric variable is a place, such that we use placelet, wrap the place in (read-once ...) so that multiple evaluations of it don't cause multiple accesses of the place. * txr.1: Documented.
* places: new accessor read-once.Kaz Kylheku2021-10-261-0/+170
| | | | | | | | | | | * lisplib.c (place_set_entries): Trigger autoload on read-once. * stdlib/place.t (read-once): New function and place. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* random: new function random-float-incl.Kaz Kylheku2021-10-251-1/+31
| | | | | | | | | | | | This function includes the 1.0 value excluded by random-float. * rand.c (random_float_incl): New static function. (rand_init): Register random_float_incl intrinsic. * txr.1: Document, and add discussion about uniformity requirements and what they mean and do not mean. * stdlib/doc-syms.tl: Updated.
* ffi: implement in-semantics for carray, cptr.Kaz Kylheku2021-10-241-5/+48
| | | | | | | | | | | | | * ffi.c (ff_cptr_in, ffi_carray_in): New static functions. (ffi_type_compile): Wire in new functions for dynamically compiled cptr and carray types. (ffi_init_types): Also, wire in ffi_cptr_in function for the non-parametrized cptr type. (carray_set_ptr): New function. * ffi.h (carray_set_ptr): Declared. * txr.1: Documented.
* doc: document (...) pic patternsKaz Kylheku2021-10-201-21/+58
| | | | | | * txr.1: Document the parenthesized pattern notation for obtaining a negative number with parentheses. Also putting the escape syntax first, because it's a short section.
* pic: preserve decimal period in ### overflow fill.Kaz Kylheku2021-10-181-3/+21
| | | | | | | | | | | | | | | | | | * pic.tl (expand-pic-num): If the overflowing field specifies a decimal point other than in the rightmost position, then stick one into the fill pattern. The motivation for this is that it harmonizes with the digit separators. The new digit separator insertion logic will treat the # characters like digits, and requires the embedded decimal in order to work properly. Allowing digit separation to work in the fill pattern will make for better looking output in column displays. That's the same reason why we insert digit separators among leading zeros. * tests/018/format.tl: Overflow test cases updated in light of this requirement change. * txr.1: Documented.
* pic: new feature: digit-separating commas.Kaz Kylheku2021-10-181-3/+32
| | | | | | | | | | | | | | | | This allows for pic patterns like #,###,###.### which incorporate digit separating commas into the output. * stdlib/pic.tl (comma-positions, insert-commas, expand-pic-num-commas): New system functions. (expand-pic): Recogize comma as a character which can be escaped using the tilde. Recognize a more complicated numeric pattern with commas. If the matched token contains commas, treat it using expand-pic-num-commas. (pic): Propagate a copy of the new numeric pattern here, where it is used for separation into tokens. * txr.1: Documented.
* printer: bug: fallback syms printed without prefix.Kaz Kylheku2021-10-121-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | This is a basic read/print consistency problem. When a symbol is printed that is anywhere in the fallback list of the current package, we are dumping it unqualified, even if it is hidden by a same-named symbol in the current package itself or such a symbol occurring earlier in the fallback list. * lib.c (symbol_needs_prefix): When the to-be-printed symbol is found in the fallback list, re-scan the current package for a symbol having the same name, as well as the preceding nodes in the fallback list. If such a symbol is found, then the to-be printed symbol must be package-qualified. * tests/012/syms.expected: New file. * tests/012/syms.tl: Likewise. * tests/012/compile.tl: Pull syms into compile job. * txr.1: Clarify text about this. The existing text's only reasonable interpretation supports the behavior which this patch ensures (which is needed on grounds of read/print consistency) but the text lacks precision.
* New path-equal function.Kaz Kylheku2021-10-101-0/+68
| | | | | | | | | | * lisplib.c (copy_file_set_entries): Add path-equal to autoload symbols. * stdlib/copy-file.tl (path-equal): New function. * tests/018/path-equal.tl: New file. * txr.1: Documented.
* Version 271.txr-271Kaz Kylheku2021-10-051-3/+3
| | | | | | | | | | | | | | * RELNOTES: Updated. * configure (txr_ver): Bumped version. * stdlib/ver.tl (lib-version): Bumped. * txr.1: Bumped version and date. * txr.vim, tl.vim: Regenerated. * protsym.c: Likewise.
* awk: :fields specifies conversions.Kaz Kylheku2021-10-041-30/+85
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * stdlib/awk.tl (sys:awk-compile-time): Slot field-names renamed to field-name-conv. (sys:awk-expander): Parse the new syntax which allows (sym fn) pairs with optional fn, creating a list of normalized items in the field-name-conv slot of the compile-time structure. (sys:awk-symac-let): Adjust the code to the pair representation in field-name-conv. (sys:awk-field-name-code): New function for generating the field conversion code. (awk): Now that we have two optional pieces of code to wrap around p-actions form, we factor that out of the awk-lambda, to a series of conditional assignments. Here we handle the generation of the field conversionns. * conv.tl (sys:conv-expand-sym): New macro, used in sys:awk-field-name-code and sys:conv-let. (sys:conv-let): Simplify with sys:conv-expand-sym. Drop optional argument from i; it connects with no documented feature, and is not usable from fconv. * tests/015/awk-fields.tl: New tests. * txr.1: Updated, including cruft in fconv documentation. Change-Id: Ie42819f58af039fdbcdb1ae365c89dc1add55c93
* doc: fix trivial typos and stylistic issues.Paul A. Patience2021-10-041-73/+71
| | | | * txr.1: Fix typos and stylistic issues.
* doc: fix refs to inexistent fill- and put-array.Paul A. Patience2021-10-041-8/+8
| | | | | | | * txr.1: fill-array -> fill-carray, put-array -> put-carray. Refer to fill-buf and put-buf with .code (or .codn). Use .code when referring to a carray object rather than an argument called carray.
* ffi: add cptr-carray function.Paul A. Patience2021-10-021-0/+36
| | | | | | | | | | | * ffi.c (cptr_carray): New function. (ffi_init): Register cptr-carray intrinsic. * ffi.h (cptr_carray): Declared. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* awk: new :fields feature for named fields.Kaz Kylheku2021-10-011-0/+34
| | | | | | | | | | | | | * stdlib/awk.tl (sys:awk-compile-time): New slot, field-names. (sys:awk-expander): Validate and store field-names into compile-time structure. (sys:awk-symac-let): New macro. (awk): Wrap sys:awk-symac-let around code to generate field name macros. * tests/015/awk-fields.tl: New file. * txr.1: Documented.
* New variable: *child-env*.Kaz Kylheku2021-09-261-0/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | This specifies the environment to be used for executing programs. * stream.c (open_subprocess, run): Check *child-env* variable and if other than t, then install the environment before execvp. In the spawn-based version of run, we save and restore the environment around the spawn call, if *child-env* is in effect. * sysif.c (child_env_s): New symbol variable. (exec_wrap): If *child-env* is other than t, then save the environment in a list, and install the specified environment before calling execvp. If that function returns, restore the environbment. * sysif.h (child_env_s): Declared. (child_env): New macro. * tests/018/process.tl: New tests. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New function: replace-env.Kaz Kylheku2021-09-251-0/+45
| | | | | | | | | | | | | | | | | | | Using this new function together with env, it's now possible to save the set of environment variables, clobber it to a specified set (possibly empty) and then restore it. Useful for improved security in running child processes. * lib.[ch] (chk_substrdup_utf8): New function. * sysif.c (replace_env): New function. (sysif_init): Register replace-env intrinsic. * sysif.h (replace_env): Declared. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
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