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* format: revise numeric handling.Kaz Kylheku2021-06-141-5/+96
| | | | | | | | | | | | | | | | | | | | | | | There are a number of issues, such as left adjustment not working and such. This needs a better treatment from the requirements level, through to a set of test cases. * stream.c (max, min): Macros macros added, in their usual form. (vformat_num): Implement new rules which suppress the zero and space characters used in place of a sign if they overflow the field width. (formatv): Clamp integer precision field to width - 1 for integers, for consistency with floating-point handling. For floating-point values under ~a and ~s, do not force the second stage precision to width - 1; only clamp it if it is greater. * format.tl: Numerous new tests. * txr.1: Significant redocumenting of this area. The handling of numbers is described as a two stage process, clarifying the changing role of "precision" in the two stages.
* format: new precision - character for zero.Kaz Kylheku2021-06-141-0/+5
| | | | | | | | | | | * stream.c (formatv): The - precision option character produces a "sign" that is a zero. If this is used with leading zeros, it will avoid generating a space. The requirements can use improvement here, but one step at a time. * tests/018/format.tl: Some tests. * txr.1: Documented.
* pic: support quasiliteral as format string.Kaz Kylheku2021-06-111-0/+5
| | | | | | | | | | | | * share/txr/stdlib/pic.tl (pic): Refactor string compilation code into local function which has access to the overall argument list. Recognize the quasiliteral case and translate by compiling all the string parts, then forming a recombined quasiliteral where the compiled parts are substituted. * tests/018/format.tl: test case for this. * txr.1: Documented.
* pic: allow trailing exclamation.Kaz Kylheku2021-06-111-0/+5
| | | | | | | | | | * share/txr/stdlib/pic.tl (expand-pic-num, expand-pic, pic): Allow ### to be followed by a single !. This is not counted toward the field width. * tests/018/format.tl: Cover with some tests. * txr.1: Doc updated.
* pic: clarification and tests.Kaz Kylheku2021-06-111-0/+6
| | | | | | | | * tests/018/format.tl: Add tests which combine overflow flagging with +/-. The space generated by - contributes to overflow. * txr.1: Clarify overflow issue in documentation.
* tests: remove *stderr* to *stdnull* redirection.Kaz Kylheku2021-06-113-17/+7
| | | | | | | | | | | | | | The recent commit 225ff2fa2fdb9e5169db5e2c06dc3b0053b775bb titled "errors: avoid premature release of deferred warnings." obviates the need for dealing with noise when detecting errors from test cases. * patmatch.tl: Remove macro-time-let around several test cases. * tests/012/ifa.tl: Likewise. * tests/common.tl (macro-time-let): Macro removed.
* pic: test cases and fixes.Kaz Kylheku2021-06-111-0/+88
| | | | | | | | | | | | | | | | | | * share/txr/stdlib/pic.tl (expand-pic-num): Bug: when a field overflows, the (rest ...) call truncates the leftmost digit. A failing test case is (pic "#.#" 12) which produces "2.0" instead of "12.0". Firstly, we only need that logic at all in the zero padding case. When the number is positive, we stick in the + request, so we are sure to get a + character. The rest call then predictably chops off the + rather than a digit. (pic-join-opt): Fix two bugs here in the string-string combine case: using s2 instead of s1, and not splicing in rest. (expand-pic, pic): Implement tightening for escape sequences. If ~ is not followed by anything, or not followed by the documented characters for escaping, it is erroneous. * format.tl: Battery of new tests.
* tests: support testing for warnings.Kaz Kylheku2021-06-111-5/+15
| | | | | | | | * tests/common.tl (error-to-sym): Catch warnings, and convert to :warning symbol. (vtest): Support new kinds of expected value: :warning. The test is satisfied if it throws a warning at expansion time or during evaluation.
* arith: switch sum and prod to seq_iter.Kaz Kylheku2021-06-091-0/+24
| | | | | | | | | | | | | | * arith.c (nary_op_keyfun): Static function removed. (nary_op_seq, nary_op_seq_keyfun): New static functions. (sumv, prodv): Static functions removed. (sum, prod): Reimplement using nary_op_seq and nary_op_seq_keyfun. Conversion of sequence to list smuggled via args is gone. * tests/016/arith.tl: new sum and prod tests. * txr.1: Note about sum and prod taking an iterable sequence added.
* reduce-left: rewrite using seq_iter.Kaz Kylheku2021-06-091-0/+10
| | | | | | | * lib.c (reduce_left): Use sequence iteration instead of list operations. * txr.1: Add a note to the documentation.
* lib: new function, fill-vec.Kaz Kylheku2021-06-081-0/+32
| | | | | | | | | | | | | | * eval.c (eval_init): Register fill-vec intrinsic. * lib.c (fill_vec): New function. * lib.h (fill_vec): Declared. * tests/010/vec.tl: New file. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* expander: expand must only ignores unbound warnings.Kaz Kylheku2021-06-071-4/+4
| | | | | | | | | | | | | | | | | | | The expand function must not muffle all deferred warnings. That causes the problem that a form like (inc var a.bar) fails to produce a warning due to bar not being the slot of any structure. The expand function must only muffle warnings about undefined functions and variables. * eval.c (muffle_unbound_warning): New static function. (no_warn_expand): Use muffle_unbound_warning as handler, rather than uw_muffle_warning. * tests/012/struct.tl: Fix two test cases here which test the expand function using a form that references a nonexistent slot. These now generate a warning, so we use the slot name b rather than d, which is defined. * txr.1: Documented change to expand.
* matcher: doc fix, quasiquote examples, new test.Kaz Kylheku2021-06-041-0/+1
| | | | | | | * tests/011/patmatch.tl: New test case. * txr.1: Heading fix: Quasiquote matching notation, not quasiliteral. Examples of quasiquote notation added.
* json: pattern matching test cases and bugfix.Kaz Kylheku2021-06-031-0/+17
| | | | | | | | | | | | | * parser.y (json_val): We must nreverse the json_pairs which were pushed in right to left order. This didn't matter for constructing hashes so it was left out, but under quasiquoting the order matters: it determines the order of evaluation and of pattern matching. * tests/011/patmatch.tl: New quasiquoting pattern matching cases, including JSON. * y.tab.c.shipped: Regenerated.
* json: improve escaping for script tags.Kaz Kylheku2021-06-031-2/+12
| | | | | | | | | | | * lib.c (out_json_str): Strengthen the test for escaping the forward slash. It has to occur in the sequence </script rather than just </. Recognize <!-- and --> in the string, and encode them. * tests/010/json.tl: Cover this area with some tests. * txr.1: Documented.
* json: fix two test cases for Windows.Kaz Kylheku2021-06-021-2/+5
| | | | | | | | | | | | * tests/010/json.tl: on Windows characters are limited to the BMP range 0 to #\xFFFF. The character escape \x10437 is out of range, and so throws an error, simply from that syntax being read. The two test cases which use this character are clumped into their own test form, which is executed conditionally on wide characters being more than two bytes. Because the expression is still parsed on Windows, we read the troublesome character from a string at run-time, and interpolate it.
* json: wrap up: test cases, fixes, tweaks.Kaz Kylheku2021-05-312-0/+135
| | | | | | | | | | | | | | | | | | | | | * /share/txr/stdlib/getput.tl (get-jsons): If the s parameter is a string, convert it to a byte input stream so that. (put-jsons): Add missing t return value. (file-put-json, file-append-json, file-put-jsons, file-append-jsons, command-put-jsons, command-put-jsons): Add missing object argument to all these functions, and a missing "w" open-file mode to several of them. * stream.c (mkstemp_wrap): Calculate length of suff the defaulted argument, not the raw suffix argument. * test/010/json.tl: New file, providing tests that touch every area of the new JSON functionality. * tests/common.tl (mstest, with-temp-file): New macros. * txr.1: Document that get-jsons takes a source which could be a string.
* tests: fix vtest being hindrance to error finding.Kaz Kylheku2021-05-252-10/+13
| | | | | | | | | | | | | * tests/common.tl (vtest): Only if the expected expression is :error or (quote :error) do we wrap the expansion and evaluation of the test expression with exception handling, because only then do we expect an error. When the test expression is anything else, we don't intercept any errors, and so problems in test cases are easier to debug now. * tests/012/struct.tl: In one case we must initialize the *gensym-counter* to 4 to compensate for the change in vtest to get the same gensym numbers in the output.
* window-map: add tests, improve doc, add examples.Kaz Kylheku2021-05-251-0/+19
| | | | | | | * tests/012/seq.tl: New tests. * txr.1: Improve documentation of window-map's :wrap and :reflect. Add examples.
* window-map: broken :wrap and :reflect.Kaz Kylheku2021-05-251-0/+33
| | | | | | | | | | | * lib.c (window_map_list): Rewrite :wrap and :reflect support. The main issue with these is that they only sample items from the front of the input list and generate both flanks of the boundary from that prefix; :reflect is additionaly buggy due to applying nreverse to a sub which can return the original sequence. * tests/012/seq.tl: Some test coverage for window-map.
* matcher: allow hash pattern to omit values.Kaz Kylheku2021-05-241-0/+7
| | | | | | | | | | | | The @(hash ...) operator now allows key-only patterns like (42) or (@x), where x could be bound or unbound. This has separate semantics from when a value is present. * share/txr/stdlib/match.tl (compile-hash-match): Implement. * tests/011/patmatch.tl: Test. * txr.1: Document.
* match: binary-integer conv tests for #x-8000...Kaz Kylheku2021-05-211-0/+21
| | | | | | * tests/016/arith.tl: Test providing coverage for the most negative two's complement integer, #x-800...00 in various sizes. The 64 bit cases are failing.
* math: add some tests related to integer conversion.Kaz Kylheku2021-05-211-0/+50
| | | | | | * tests/016/arith.tl: Add tests covering the fixnum/bignum knee, and ffi operations of various sizes that provide coverage of various conversion routines.
* parser: bug: handing of lex state in pushback tokens.Kaz Kylheku2021-05-121-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is fairly obscure. A repro test case is a file which contains: 3"foo" When the 3 is parsed, the " is also scanned as a lookahead token, and when that happens, the lexer shifts into the STRLIT state. At that point the parse job finishes for that top-level form. The next time the parser is called, it will prime the token stream by pushing the " token into it. But, the lex state is not put into the STRLIT. State. The result is that the parser obtains the " token, and then foo is lexically analyzed in the wrong state as a symbol. A syntax error occurs: symbol token in the middle of a string literal, instead of just a sequence of LITCHAR tokens, as expected. What we can do is associate a lex state with pushback tokens. If a pushback token has a nonzero lex state which is different from the current YYSTATE, then when that pushback token is consumed, we push that state also. * parser.h (struct yy_token): New member, yy_lex_state. * parser.c (parser_common_init): Initialize the new yy_lex_state member of every token member of the parser structure. * parser.l (yylex): When feeding a pushed token to the parser, if that token has a nonzero state, and the state is different from YYSTATE, we push that state. So for instance a pushed back " token will carry the STRLIT state, which is different from the NESTED state that will be in effect at the start of the parse job, and so it will be pushed, as if the " character had been scanned. Also, when we call the real yylex_impl, when we are storing the recenty seen token in recent_tok, we also store the current YYSTATE along with it. That's how tokens get associated with a state. The artificial tokens that are used for priming parsing like SECRET_ESCAPE_E are never associated with a nonzero state. * tests/012/syntax.tl: Some test cases that didn't pass before this. * lex.yy.c.shipped: Regenerated.
* tree: let tree-iter be iterable via generic iteration.Kaz Kylheku2021-05-121-0/+5
| | | | | | | | | | * lib.c (seq_iter_init_with_info): Recognize tree_iter object, and treat using tree iterator function. * tests/010/tree.tl: test case for tree subrange iteration with collect-each. * txr.1: Updated.
* tree: streamline iteration; provide high limit.Kaz Kylheku2021-05-111-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Getting rid of tree-begin-at and tree-reset-at. Now tree-begin takes two optional parameters, for specifying high and low range. * tree.c (struct tree_diter): New members, tree and highkey. We need tree due to requiring access to the less function. If the iterator has no highkey, the iterator itself is stored in that member to indicate this. (tree_iter_mark): Mark the tree and highkey. (tree_begin): Take optional lowkey and highkey arguments, initializing iterator acordingly. (tree_begin_at): Function removed. (copy_tree_iter, replace_tree_iter): Copy tree and highkey members. The latter require special handling due to the funny convention for indicating highkey absence. (tree_reset): Take optional lowkey and highkey arguments, configuring these in the iterator being reset. (tree_reset_at): Function removed. (tree_next, tree_peek): Implement highkey semantics. (sub_tree): Simplified: from and to arguments are just passed through to tree_begin, and there is no need for a separate loop which enforces the upper limit, that now being handled by the iterator itself. (tree_begin): Update registrations of tree-begin and tree-reset; remove tree-begin-at and tree-reset-at intrinsics. * tree.h (tree_begin_at, tree_reset_at): Declarations removed. (tree_begin, tree_reset): Declarations updated. * lib.c (seq_iter_rewind, seq_iter_init_with_info, where, populate_obj_hash): Default new optional arguments in tree_begin and tree_reset calls. * parser.c (circ_backpatch): Likewise. * tests/010/tree.tl: Affected cases updated. * txr.1: Documentation updated. * share/txr/stdlib/doc-syms.tl: Regenerated.
* tree: support indexing and range extraction.Kaz Kylheku2021-05-111-0/+18
| | | | | | | | | | | | | | | | | | | * lib.c (do_generic_funcall): Support tree object invocation with one or two arguments via sub and ref. (sub): Implement for trees via sub_tree. (ref): Implement for trees via tree_lookup. * tree.c (sub_tree): New function. (tree_init): Register sub-tree intrinsic. * tree.h (sub_tree): Declared. * tests/010/tree.tl: New tests. * txr.1: Documented: DWIM bracket syntax on trees, sub and ref support for trees, sub-tree function, * share/txr/stdlib/doc-syms.tl: Regenerated.
* tree: replace-tree-iter function.Kaz Kylheku2021-05-111-0/+11
| | | | | | | | | | | | | * tree.c (replace_tree_iter): New function. (tree_init): Register replace-tree-iter intrinsic. * tree.h (tree_init): Declared. * share/txr/stdlib/doc-syms.tl: Updated. * txr.1: Documented. * tests/010/tree.tl: New test case.
* tree: copy-tree-iter function.Kaz Kylheku2021-05-101-0/+9
| | | | | | | | | | | | | | | * lib.c (copy): Handle tree_iter_s via copy_tree_iter. * tree.c (copy_tree_iter): New function. (tree_init): copy-tree-iter intrinsic registered. * tree.h (copy_tree_iter): Declared. * tests/010/tree.tl: New test case. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* diff/isec: reset hash/tree iter instead making new.Kaz Kylheku2021-05-102-0/+11
| | | | | | | | | | | * lib.c (seq_iter_rewind): Use hash_reset and tree_reset to rewind the existing iterator rather than allocating a new one. * tests/010/hash.tl: New file, covering uni, diff and isec for hash tables. * tests/010/tree.tl: New tests.
* tree: new tree-peek function.Kaz Kylheku2021-05-091-0/+8
| | | | | | | | | | | | | | * tree.c (tn_peek_next): New static function. (tree_peek): New function. (tree_init): Register tree-peek intrinsic. * tree.h (tree_peek): Declared. * txr.1: Documented. * tests/010/tree.c: Work tree-peek into existing test case. * share/txr/stdlib/doc-syms.tl: Updated.
* tree: new make_similar_tree unction.Kaz Kylheku2021-05-091-0/+8
| | | | | | | | | | | * tree.c (make_similar_tree): New function. (tree_init): Register make-similar-tree intrinsic * tree.h (make_similar_tree): Declared. * tests/010/tree.tl: New tests. * txr.1: Documented.
* parser: #; tests and bugfixes.Kaz Kylheku2021-05-061-0/+20
| | | | | | | | | | | | | | | | This is motivated by the recent crash regression in the #; comment out mechanism. The parser doesn't have adequate coverage in the test suite. * tests/012/syntax.tl: New file, for testing syntax. A problem was found #;.expr did not work inside a list, only at top level. It required a space before the dot. * parser.y (listacc): A couple of productions to handle hash-semicolon immediately followed by a dot without any whitespace, and then by an expression. * y.tab.c.shipped: Regenerated.
* matcher: new "each-match family" of macros.Kaz Kylheku2021-05-041-0/+53
| | | | | | | | | | | | | | | | | | * lisplib.c (match_set_entries): New autoload symbols: each-match, append-matches, keep-matches, each-match-product, append-match-products, keep-match-products. * share/txr/stdlib/doc-syms.tl: Updated. * share/txr/stdlib/match.tl (each-match-expander): New function. (each-match, append-matches, keep-matches, each-match-product, append-match-products, keep-match-products): New macros. * tests/011/patmatch.tl: New tests covering each macro, far from exhaustively. * txr.1: Documented.
* format: ~x/~X specifiers support buffers.Kaz Kylheku2021-05-041-0/+29
| | | | | | | | | | | | | * buf.c (buf_hex): New function. * buf.h (buf_hex): Declared. * stream.c (formatv): Support printing of buffers in hex via temporary buffer containing hex characters, similarly to how bignums are handled. * tests/018/format.tl: New file, providing some coverage over new and affected code.
* buf: bugfix: int-buf, uint-buf refer to alloc size.Kaz Kylheku2021-05-041-0/+4
| | | | | | | | | | * buf.c (int_buf, uint_buf): Refer to the buffer length b->len rather than the underlying allocation size b->size. Referring to b->size will not only produce the wrong value when it is larger than len, but b->size can be null for a borrowed buffer, producing a crash. * tests/012/buf.tl: Tests.
* rel-path: bugfixes.Kaz Kylheku2021-05-031-1/+6
| | | | | | | | | | | | | | | * share/txr/stdlib/copy-file.tl: When removing .. components, a dotdot must only cancel preceding non-dotdot. We must check not only that the out stack is not empty but that the top element isn't dotdot. Also, eliminate empty components, like the documentation says. Lastly, we must check for the impossible cases, when the from path uses .. components that are impossible to navigate backwards to form a relative path. * tests/018/rel-path.tl: Test cases added. * txr.1: Updated with additional descriptions, fixes and examples.
* New function: rel-path.Kaz Kylheku2021-05-031-0/+17
| | | | | | | | | | | | | * lisplib.c (copy_file_set_entries): Add rel-path as autoload trigger for copy-file module. * share/txr/stdlib/copy-file.tl (rel-path): New function. * tests/018/rel-path.tl: New file. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* bug: join-with segfault on character separators.Kaz Kylheku2021-05-021-0/+23
| | | | | | | * lib.c (join_with): Pass the correct onech array down to cat_str_init, rather than a null pointer. * tests/015/split.tl: New tests covering join and join-with.
* tree: new functions for reseting iterator.Kaz Kylheku2021-04-301-0/+15
| | | | | | | | | | | | | | * tree.c (tree_reset, tree_reset_at): New functions. (tree_init): tree-reset and tree-reset-at intrinsics registered. * tree.h (tree_reset, tree_reset_at): Declared. * tests/010/tree.tl: New tests. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* tree: use rlist in test case.Kaz Kylheku2021-04-301-1/+1
| | | | | * tests/010/tree.tl: Use rlist to express discontinuous range instead of appending ranges.
* mapcar*: fix broken.Kaz Kylheku2021-04-291-0/+6
| | | | | | | | | | * eval.c (lazy_mapcar_func): We must capture the return value of iter_step, since we refer to it in the next statement, expecting it to have stepped. This bug causes a behavior as if the original list had an extra nil. * tests/012/lazy.tl: Tests. Poor test coverage is why this sort of thing comes up and bites us.
* tree: new tree-begin-at function.Kaz Kylheku2021-04-291-1/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * tree.c (enum tree_iter_state): New iterator state tr_find_low_prepared dedicated to the tree-begin-at traversal. This state indicates that tree-next should visit the starting node that it is given, and then after that, treat anything to the left of it as having been visited. In the other states, tree-next does not visit the node it is given but uses it as the starting point to find the next node. (tn_find_next): Bugfix here: when navigating the right link, the function neglected to add the node to the path. But the logic for backtracking up the path expects this: it checks whether the node from the path is the parent of a right child. Somehow this didn't cause a problem for full traversals with tree-begin; at least the existing test cases don't expose an issue. It caused a problem for tree-begin-at, though. (tn_find_low): New static function. This finds the low-key node in the tree, priming the iterator object with the correct state and path content to continue the traversal from that node on . We need the tr_find_low_prepared state in the iterator in order to visit the low node itself that was found. (tree_begin_at): New function. (tree_init): Register tree-begin-at intrinsic. * tree.h (tree_begin_at): Declared. * tests/010/tree.tl: New test cases for tree-begin-at. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* tree: more tests.Kaz Kylheku2021-04-291-0/+40
| | | | | | * tests/010/tree.tl: New tests, broadening coverage. * share/txr/stdlib/doc-syms.tl: Regenerated.
* tree: incorrect lookup function.Kaz Kylheku2021-04-291-0/+31
| | | | | | | * tree.c (tn_lookup): The right case is incorrectly chasing the left pointer. * tests/010/tree.tl: New file.
* tree: debug massive gc problems.Kaz Kylheku2021-04-291-0/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | The tree module doesn't observe generational GC correctness; it assigns objects into other objects using ordinary assignment. * tests/010/tree.tl (tree_iter): New member, tree. This is initialized to null for iterators on the stack. dynamic iterator, we need this to be a back-pointer to the dynamic iterator. (tree_iter_init): Add parameter to initializer to set up the back-pointer. (set_left, set_right, set_key): Use set macro instead of ordinary assignment. (tn_find_next): Use set macro to add node to path. (tn_flatten, tn_build_tree): Use set macro. (tr_rebuild, tr_rebuild_scapegoat, tr_insert, tr_do_delete), tr_delete): Use set macro. Take a tree argument so we can use set macro on tr->root. (tree_insert): Use set macro. Pass 0 to tree_iter_init initializer macro. (tree_delete_node): Pass tree to tr_delete. (tree_equal_op, tree_print_op, tree_hash_op): Pass 0 to tree_iter_init initializer macro. (tree-begin): Rearrange construction for GC correctness: avoid storing pointers into not-yet-reachable structure.
* match-str: tests with negative pos.Kaz Kylheku2021-04-281-1/+29
| | | | * tests/015/match-str.tl: Tests added.
* match-str: tests and bugfix.Kaz Kylheku2021-04-271-0/+41
| | | | | | * lib.c (do_match_str): Fix wrong return value calculation in LSTR-LSTR case. * tests/015/match-str.tl: New file.
* matcher: make use of mtest in test suite.Kaz Kylheku2021-04-271-111/+122
| | | | | * tests/011/patmatch.tl: Use mtest throughout to condense the syntax.
* matcher: add some test variants.Kaz Kylheku2021-04-261-2/+20
| | | | | | | * tests/011/patmatch.tl: Add variants based on existing tests which insert an extra character at the left that is matched by a bound variable. This tests that the remainder of the pattern is following the offset numeric position within the string.
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