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Differential D4107

index: make "nt_*" functions work on an initialized nodetree
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Authored by martinvonz on Aug 5 2018, 3:58 AM.

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rHG2aa4f06c1e91: index: make "nt_*" functions work on an initialized nodetree
Summary

I want to be able to reuse these functions with another nodetree
instance later (for disambiguating node prefix within a revset). That
other nodetree instance won't want to be fully populated from the
index, so this commit moves that part to the callers.

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martinvonz created this revision.Aug 5 2018, 3:58 AM
Closed by commit rHG2aa4f06c1e91: index: make "nt_*" functions work on an initialized nodetree (authored by martinvonz). · Explain WhyAug 6 2018, 9:13 AM
This revision was automatically updated to reflect the committed changes.

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PathPackages
Mmercurial/cext/revlog.c (19 lines)

Diff 9910

mercurial/cext/revlog.c

self->ntrev = -1; self->ntrev = -1;
} }
return 0; return 0;
} }
static int nt_partialmatch(indexObject *self, const char *node, static int nt_partialmatch(indexObject *self, const char *node,
Py_ssize_t nodelen) Py_ssize_t nodelen)
{ {
if (nt_init(self) == -1)
return -3;
if (nt_populate(self) == -1)
return -3;
return nt_find(self, node, nodelen, 1); return nt_find(self, node, nodelen, 1);
} }
/* /*
* Find the length of the shortest unique prefix of node. * Find the length of the shortest unique prefix of node.
* *
* Return values: * Return values:
* *
* -3: error (exception set) * -3: error (exception set)
* -2: not found (no exception set) * -2: not found (no exception set)
* rest: length of shortest prefix * rest: length of shortest prefix
*/ */
static int nt_shortest(indexObject *self, const char *node) static int nt_shortest(indexObject *self, const char *node)
{ {
int level, off; int level, off;
if (nt_init(self) == -1)
return -3;
if (nt_populate(self) == -1)
return -3;
for (level = off = 0; level < 40; level++) { for (level = off = 0; level < 40; level++) {
int k, v; int k, v;
nodetree *n = &self->nt[off]; nodetree *n = &self->nt[off];
k = nt_level(node, level); k = nt_level(node, level);
v = n->children[k]; v = n->children[k];
if (v < 0) { if (v < 0) {
const char *n; const char *n;
v = -(v + 2); v = -(v + 2);
for (i = 0; i < nodelen; i++) for (i = 0; i < nodelen; i++)
hexdigit(node, i); hexdigit(node, i);
if (PyErr_Occurred()) { if (PyErr_Occurred()) {
/* input contains non-hex characters */ /* input contains non-hex characters */
PyErr_Clear(); PyErr_Clear();
Py_RETURN_NONE; Py_RETURN_NONE;
} }
if (nt_init(self) == -1)
return NULL;
if (nt_populate(self) == -1)
return NULL;
rev = nt_partialmatch(self, node, nodelen); rev = nt_partialmatch(self, node, nodelen);
switch (rev) { switch (rev) {
case -4: case -4:
raise_revlog_error(); raise_revlog_error();
case -3:
return NULL; return NULL;
case -2: case -2:
Py_RETURN_NONE; Py_RETURN_NONE;
case -1: case -1:
return PyBytes_FromStringAndSize(nullid, 20); return PyBytes_FromStringAndSize(nullid, 20);
} }
fullnode = index_node_existing(self, rev); fullnode = index_node_existing(self, rev);
int length; int length;
if (!PyArg_ParseTuple(args, "O", &val)) if (!PyArg_ParseTuple(args, "O", &val))
return NULL; return NULL;
if (node_check(val, &node) == -1) if (node_check(val, &node) == -1)
return NULL; return NULL;
self->ntlookups++; self->ntlookups++;
if (nt_init(self) == -1)
return NULL;
if (nt_populate(self) == -1)
return NULL;
length = nt_shortest(self, node); length = nt_shortest(self, node);
if (length == -3) if (length == -3)
return NULL; return NULL;
if (length == -2) { if (length == -2) {
raise_revlog_error(); raise_revlog_error();
return NULL; return NULL;
} }
return PyInt_FromLong(length); return PyInt_FromLong(length);