function, since foreign functions will always raise any exception they
return (hence the double catch in issue #15).
also restoring the original exception handler when an exception is
raised in with-exception-handler, so that exceptions within the
handler itself don't cause an infinite loop. this may change, as
with-exception-handler is meant to be a low-level tool on which to
build either guard or condition-case, but until then the restoring
is necessary.
since in a minimal chibi heap the stack accounts for a large
amount of the space, this makes a big difference - you can
now load (chibi match) in a 2MB heap on a 64-bit system and
it won't grow the heap.
You want to use the CHIBI_MODULE_PATH environment variable now,
not CHIBI_MODULE_DIR, and can use : separators as expected.
The default main now also accepts -I<dir> and -A<dir> to prepend
or append module directories.
The default path is ".:./lib:$PREFIX/share/chibi". The first
two may be removed in a future version.
to have an SEXP_ prefix. Now all values from the headers
are prefixed with either sexp_ or SEXP_, important for ease
of embedding. "make USE_BOEHM=1" still works as an alias
for "make SEXP_USE_BOEHM=1".
Sorry if this patch breaks your code, it had to be done
sooner or later.
and non-mutated identifiers. helps a lot with the default
syntax-rules constructions - in particular reduces the number of
bytecode allocations for (chibi match) from 2397 to 1872.
Each contexts keep a link to the heap which it is a part
of (when using the native GC), as well as a vector of
special globals that it needs quick access to (e.g. the
`quote' and `quasiquote', etc. symbols. You can use this
to manage multiple completely unrelated VMs in the same
application, and everything will be thread-safe.
The old behavior is still available by editing config.h,
which now includes somewhat better descriptions of all
the settings.
all native types, present and future, now supported.
allows for distinguishing which slots should be used
for comparison (e.g. source info of pairs isn't compared).
Replacing sexp_make_integer, sexp_integerp, etc. with sexp_make_fixnum,
sexp_fixnump, etc. Defining the old names as variants handling either
fixnums or bignums, or just as aliases for the new terms when compiled
without bignum support. sexp_make_integer needs to take a context now
in case it generates a bignum.
Adding sexp_gc_var1..6 and corresponding _preserve/release1..6
referring to fixed preservation variable names, to substantially
reduce the boilerplate on C functions which produce temporary sexp
values. The fixed variable names are safe because we never nest
them within the same C function. The original macros are still
available for manual naming, block local variables and cases of
more than 6 gc vars.
Consider combining var+preserve into a single macro, since splitting
them is rare.
