dirstate: remove the python-side whitelist of allowed matchers
This whitelist is too permissive because it allows matchers that contain
disallowed ones deep inside, for example through `intersectionmatcher`.
It is also too restrictive because it doesn't pass through
some of the matchers we support, such as `patternmatcher`.
It's also unnecessary because unsupported matchers raise
`FallbackError` and we fall back anyway.
Making this change makes more of the tests use rust code path,
and therefore subtly change behavior. For example, rust status
in largefiles repos seems to have strange behavior.
import cffi
import os
ffi = cffi.FFI()
mpatch_c = os.path.join(
os.path.join(os.path.dirname(__file__), '..', 'mpatch.c')
)
with open(mpatch_c) as f:
ffi.set_source(
"mercurial.cffi._mpatch", f.read(), include_dirs=["mercurial"]
)
ffi.cdef(
"""
struct mpatch_frag {
int start, end, len;
const char *data;
};
struct mpatch_flist {
struct mpatch_frag *base, *head, *tail;
};
extern "Python" struct mpatch_flist* cffi_get_next_item(void*, ssize_t);
int mpatch_decode(const char *bin, ssize_t len, struct mpatch_flist** res);
ssize_t mpatch_calcsize(size_t len, struct mpatch_flist *l);
void mpatch_lfree(struct mpatch_flist *a);
static int mpatch_apply(char *buf, const char *orig, size_t len,
struct mpatch_flist *l);
struct mpatch_flist *mpatch_fold(void *bins,
struct mpatch_flist* (*get_next_item)(void*, ssize_t),
ssize_t start, ssize_t end);
"""
)
if __name__ == '__main__':
ffi.compile()