| Commit message (Collapse) | Author | Age | Files | Lines |
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lib.h, match.c, match.h, parser.h, parser.l, parser.y, regex.c,
regex.h, stream.c, stream.h, txr.1, txr.c, txr.h, unwind.c, unwind.h,
utf8.c, utf8.h: Updated copyright year.
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* lib.c (split_str, split_str_set): It is necessary to protect input
parameters against GC, because we cache their internal pointers,
after which we no longer refer to the objects themselves. Moreover,
we perform object allocation, and then keep using the internal
pointers.
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Added missing support for literal string type.
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of string must use postincrement on the index, otherwise the access
goes past the null terminator.
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* lib.c (split_str_sep): New function.
(split_str): Semantics changed; the second argument
is not a set of separator characters (like in split_str_sep)
but rather a separator string. Fixed bug: if the input
string is empty, the output list is empty. This caused
infinite looping behavior in @(freeform).
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that we don't clobber the null terminator in the target string, or try
read past the end of the source data. This affects the @(freeform)
directive.
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Exponential memory consumption behavior was observed when
matching the input aaaaaa....
against the regex a?a?a?a?....aaaa....
The fix is to eliminate common subexpressions
from the derivative for the or operator.
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Conflicts:
ChangeLog
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in the middle of statement block.
* lib.h (TAG_MASK): Becomes type cnum rather than long.
(nao): Based off 1 rather than -1 to avoid left shift of
negative number.
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This turns out to be easy to do in NFA land.
The complement of an NFA has exactly the same number
and configuration of states and transitions, except
that the states have an inverted meaning; and furthermore,
failed character transitions are routed to an extra
state (which in this impelmentation is permanently
allocated and shared by all regexes). The regex &
is implemented trivially using DeMorgan's.
Also, bugfix: regular expressions like A|B|C are allowed
now by the syntax, rather than constituting syntax error.
Previously, this would have been entered as (A|B)|C.
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* hash.h (sethash): Declared.
* lib.c (cobj_handle): New function.
* lib.h (cobj_handle): Declared.
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no null pointer check over struct cobj_ops operations.
New typechecking function for COBJ objects.
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from now on, which is compatible with unsigned char *.
No implicit conversion to or from this type, in C or C++.
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in regex module not exposed in header. Etc.
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to vector data; they point to element 0 which is actually the third
element of the vector. If an object is only referenced by interior
pointers, Valgrind reports it as possibly leaked. This change
conditionally adds a pointer to the true start of the vector,
if Valgrind support is enabled.
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can be taken advantage of for better diagnostics.
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have a _s suffix.
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caught by gcc 4.1.1.
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can be converted to a type long and vice versa. The configure
script tries to detect the appropriate type to use. Also,
some run-time checking is performed in the streams module
to detect which conversions specifier strings to use for
printing numbers.
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a system package instead of being hacked with the $ prefix.
Keyword symbols are provided. In the matcher, evaluation
is tightened up. Keywords, nil and t are not bindeable, and
errors are thrown if attempts are made to bind them.
Destructuring in dest_bind is strict in the number of items.
String streams are exploited to print bindings to objects
that are not strings or characters. Numerous bugfixes.
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we have an unhandled exception too early in initialization.
Use C stream to print an error message and abort.
Using the nil stream variable will just cause a recursion bomb.
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should not map nil -> (nil), but nil -> nil.
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we wouldn't have to declare object variables at all, so why
use an obtuse syntax to do so?)
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The recent auto_str("byte str") error could have been caught
at compile time.
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compiler. Idea: allocator functions return char * instead of void *,
like malloc did in classic pre-ANSI C. That way we are forced to
use a cast except when the target pointer is char * already.
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abstraction instead of directly using C standard I/O,
to eliminate most uses of C formatted I/O,
and fix numerous bugs, such variadic argument lists which
lack a terminating ``nao'' sentinel.
Bug 28033 is addressed by this patch, since streams no longer provide
printf-compatible formatting. The native formatter is extended with
some additional capabilities to take over.
The work on literal objects is expanded and they are now used
throughout the code base.
Fixed bad realloc in string output stream: reallocating by number
of wide chars rather than bytes.
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pointer to a C static string, intended for literals. We can now
treat literal strings as light-weight objects.
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(c_chr): Return wchar_t not int.
* lib.h (chr, c_chr): Declarations updated.
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Bumped version numbers, and cleaned up trailing whitespace from some files.
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Fix unsigned and plan char * mixing.
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(lazy_str): Fix for gc correctness: object from make_obj must be
completely intialized before any gc-triggering operation is invoked,
otherwise the garbage collector will be traversing an object
whose fields contain old garbage.
(lazy_str_force_upto): Off-by-one error. To force the object
up to index position N, means forcing up to length N+1.
This bug can make it look like a lazy string is much shorter
than it really is.
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use wide character functions so that there is no illicit
mixing. (But the goal is to replace this usage with txr streams).
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This is incomplete. There are too many dependencies on
wide character support from the C stream I/O library,
and implicit use of some encoding which may not be UTF-8.
The regex code does not handle wide characters properly.
Character type is still int in some places, rather than wchar_t.
Test suite passes though.
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Now numbers and characters fit into a cell. We lose one more bit
from the range of numbers.
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unboxed. If the lowest bit of the obj_t * pointer is 1, then
the remaining bits are a number. A lot of assumptions are made:
- the long type can be converted to and from a pointer
- two's complement.
- behavior of << and >> operators when the sign bit is involved.
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due to use of boxed numbers for vector access.
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is needed for pipes that terminate abnormally or return failed
termination. Pipe and stdio streams have an extra description field
so they are printed in a readable way.
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by the integer constant 0 rather than a proper null pointer constant.
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bottom is unreliable due to the unpredictable allocation order of local
variables.
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Regexps can be bound to variables.
New freeform directive.
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