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added qse_htl_yanknode(), qse_htl_upyank().

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added qse_raddic_deletevendorbyname(), qse_raddic_deletevendorbyid()
This commit is contained in:
hyung-hwan 2017-12-11 08:48:06 +00:00
parent 4266d8026c
commit c9bbd3c993
5 changed files with 267 additions and 45 deletions
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45
qse/include/qse/cmn/htl.h
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@ -197,10 +197,10 @@ static QSE_INLINE void qse_htl_setcopier (qse_htl_t* htl, qse_htl_copier_t _copi
/**
* The qse_htl_search() function searches a hash table to find a
* matching datum. It returns the index to the slot of an internal array
* where the matching datum is found.
* matching item. It returns the index to the slot of an internal array
* where the matching item is found.
* \return slot index if a match if found,
* #QSE_HTL_NIL if no match is found.
* #QSE_NULL if no match is found.
*/
QSE_EXPORT qse_htl_node_t* qse_htl_search (
qse_htl_t* htl, /**< hash table */
@ -215,10 +215,9 @@ QSE_EXPORT qse_htl_node_t* qse_htl_heterosearch (
);
/**
* The qse_htl_insert() function inserts a new datum. It fails if it finds
* an existing datum.
* \return slot index where the new datum is inserted on success,
* #QSE_HTL_NIL on failure.
* The qse_htl_insert() function inserts a new item. It fails if it finds
* an existing item.
* \return a node pointer on success, #QSE_NULL on failure.
*/
QSE_EXPORT qse_htl_node_t* qse_htl_insert (
qse_htl_t* htl, /**< hash table */
@ -226,9 +225,9 @@ QSE_EXPORT qse_htl_node_t* qse_htl_insert (
);
/**
* The qse_htl_upsert() function inserts a new datum if it finds no matching
* datum or updates an exsting datum if finds a matching datum.
* \return slot index where the datum is inserted or updated.
* The qse_htl_upsert() function inserts a new item if it finds no matching
* item or updates an exsting item if finds a matching item.
* \return node pointer on success, #QSE_NULL on failure.
*/
QSE_EXPORT qse_htl_node_t* qse_htl_upsert (
qse_htl_t* htl, /**< hash table */
@ -236,16 +235,25 @@ QSE_EXPORT qse_htl_node_t* qse_htl_upsert (
);
/**
* The qse_htl_update() function updates an existing datum. It fails if it finds
* no existing datum.
* \return slot index where an existing datum is updated on success,
* #QSE_HTL_NIL on failure.
* The qse_htl_update() function updates an existing item. It fails if it finds
* no existing item.
* \return a node pointer on success, #QSE_NULL on failure.
*/
QSE_EXPORT qse_htl_node_t* qse_htl_update (
qse_htl_t* htl, /**< hash table */
void* data /**< data pointer */
);
/**
* The qse_htl_upyank() function updates an existing dataum without disposing
* the old data.
*/
QSE_EXPORT qse_htl_node_t* qse_htl_upyank (
qse_htl_t* htl, /**< hash table */
void* data, /**< data pointer */
void** oldata /**< old data pointer */
);
/**
* The qse_htl_ensert() function inserts a new item if one is not found.
* It returns an existing item otherwise.
@ -256,8 +264,8 @@ QSE_EXPORT qse_htl_node_t* qse_htl_ensert (
);
/**
* The qse_htl_delete() function deletes an existing datum. It fails if it finds
* no existing datum.
* The qse_htl_delete() function deletes an existing item. It fails if it finds
* no existing item.
* \return 0 on success, -1 on failure
*/
QSE_EXPORT int qse_htl_delete (
@ -270,6 +278,11 @@ QSE_EXPORT void* qse_htl_yank (
void* data
);
QSE_EXPORT qse_htl_node_t* qse_htl_yanknode (
qse_htl_t* ht,
void* data
);
/**
* The qse_htl_clear() functions deletes all data items.
*/

14
qse/include/qse/rad/raddic.h
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@ -82,15 +82,17 @@ struct qse_raddic_value_t
};
typedef struct qse_raddic_value_t qse_raddic_value_t;
typedef struct qse_raddic_vendor_t qse_raddic_vendor_t;
struct qse_raddic_vendor_t
{
int vendorpec;
int type;
int length;
int flags;
qse_raddic_vendor_t* nextv; /* next vendor with same details except the name */
qse_char_t name[1];
};
typedef struct qse_raddic_vendor_t qse_raddic_vendor_t;
typedef struct qse_raddic_t qse_raddic_t;
@ -123,6 +125,16 @@ QSE_EXPORT qse_raddic_vendor_t* qse_raddic_addvendor (
int value
);
QSE_EXPORT int qse_raddic_deletevendorbyname (
qse_raddic_t* dic,
const qse_char_t* name
);
QSE_EXPORT int qse_raddic_deletevendorbyvalue (
qse_raddic_t* dic,
int value
);
#if defined(__cplusplus)
}
#endif

46
qse/lib/cmn/htl.c
View File

@ -578,6 +578,27 @@ qse_htl_node_t* qse_htl_update (qse_htl_t* ht, void* data)
return node;
}
qse_htl_node_t* qse_htl_upyank (qse_htl_t* ht, void* data, void** olddata)
{
qse_htl_node_t* node;
void* datap, * olddatap;
node = qse_htl_search(ht, data);
if (!node) return QSE_NULL;
if (ht->copier)
{
datap = ht->copier (ht, data);
if (!datap) return QSE_NULL;
}
else datap = data;
*olddata = node->data;
node->data = datap;
return node;
}
qse_htl_node_t* qse_htl_ensert (qse_htl_t* ht, void* data)
{
qse_htl_node_t* node;
@ -588,19 +609,14 @@ qse_htl_node_t* qse_htl_ensert (qse_htl_t* ht, void* data)
return node;
}
/*
* Yank an entry from the hash table, without freeing the data.
*/
void* qse_htl_yank (qse_htl_t* ht, void* data)
qse_htl_node_t* qse_htl_yanknode (qse_htl_t* ht, void* data)
{
qse_uint32_t key;
qse_uint32_t entry;
qse_uint32_t reversed;
void *old;
qse_htl_node_t* node;
if (!ht) return QSE_NULL;
key = ht->hasher(ht, data);
entry = key & ht->mask;
reversed = reverse(key);
@ -613,9 +629,23 @@ void* qse_htl_yank (qse_htl_t* ht, void* data)
list_delete(ht, &ht->buckets[entry], node);
ht->num_elements--;
return node;
}
/*
* Yank an entry from the hash table, without freeing the data.
*/
void* qse_htl_yank (qse_htl_t* ht, void* data)
{
qse_htl_node_t* node;
void* old;
node = qse_htl_yanknode (ht, data);
if (!node) return QSE_NULL;
old = node->data;
QSE_MMGR_FREE (ht->mmgr, node);
return old;
}

87
qse/lib/rad/raddic.c
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@ -217,7 +217,7 @@ qse_raddic_vendor_t* qse_raddic_findvendorbyvalue (qse_raddic_t* dic, int vendor
qse_raddic_vendor_t* qse_raddic_addvendor (qse_raddic_t* dic, const qse_char_t* name, int value)
{
qse_size_t length;
qse_raddic_vendor_t* dv;
qse_raddic_vendor_t* dv, * old_dv;
qse_htl_node_t* np;
if (value >= 65535) return QSE_NULL;
@ -231,6 +231,7 @@ qse_raddic_vendor_t* qse_raddic_addvendor (qse_raddic_t* dic, const qse_char_t*
qse_strcpy(dv->name, name);
dv->vendorpec = value;
dv->type = dv->length = 1; /* defaults */
dv->nextv = QSE_NULL;
/* return an existing item or insert a new item */
np = qse_htl_ensert(&dic->vendors_byname, dv);
@ -241,16 +242,96 @@ qse_raddic_vendor_t* qse_raddic_addvendor (qse_raddic_t* dic, const qse_char_t*
return QSE_NULL;
}
/* update indexing by value */
if (!qse_htl_upsert(&dic->vendors_byvalue, dv))
/* attempt to update the lookup table by value */
np = qse_htl_upyank(&dic->vendors_byvalue, dv, (void**)&old_dv);
if (np)
{
/* updated the existing item successfully.
* link the old item to the current item */
QSE_ASSERT (np->data == dv);
QSE_ASSERT (dv->vendorpec == old_dv->vendorpec);
dv->nextv = old_dv;
}
else
{
/* update failure, this entry must be new. try insertion */
if (!qse_htl_insert (&dic->vendors_byvalue, dv))
{
qse_htl_delete (&dic->vendors_byname, dv);
return QSE_NULL;
}
}
return dv;
}
int qse_raddic_deletevendorbyname (qse_raddic_t* dic, const qse_char_t* name)
{
qse_raddic_vendor_t* dv, * dv2;
dv = qse_raddic_findvendorbyname(dic, name);
if (!dv) return -1;
dv2 = qse_raddic_findvendorbyvalue(dic, dv->vendorpec);
QSE_ASSERT (dv2 != QSE_NULL);
if (dv != dv2)
{
qse_raddic_vendor_t* x, * y;
QSE_ASSERT (qse_strcasecmp(dv->name, dv2->name) != 0);
QSE_ASSERT (dv->vendorpec == dv2->vendorpec);
/* when the vendor of the given name is not the first one
* referenced by value, i need to unlink the vendor from the
* vendor chains with the same ID */
x = dv2;
y = QSE_NULL;
while (x)
{
if (x == dv)
{
if (y) y->nextv = x->nextv;
break;
}
y = x;
x = x->nextv;
}
}
else
{
/* this is the only vendor with the vendor ID. i can
* safely remove it from the lookup table by value */
qse_htl_delete (&dic->vendors_byvalue, dv);
}
/* delete the vendor from the lookup table by name */
qse_htl_delete (&dic->vendors_byname, dv);
return 0;
}
int qse_raddic_deletevendorbyvalue (qse_raddic_t* dic, int value)
{
qse_raddic_vendor_t* dv;
dv = qse_raddic_findvendorbyvalue(dic, value);
if (!dv) return -1;
if (dv->nextv)
{
qse_htl_update (&dic->vendors_byvalue, dv->nextv);
}
else
{
/* this is the only vendor with the vendor ID. i can
* safely remove it from the lookup table by value */
qse_htl_delete (&dic->vendors_byvalue, dv);
}
/* delete the vendor from the lookup table by name */
qse_htl_delete (&dic->vendors_byname, dv);
return 0;
}
#if 0 // XXX
/*

96
qse/samples/rad/raddic01.c
View File

@ -16,7 +16,7 @@
static int test1 ()
{
qse_raddic_t* dic;
qse_raddic_vendor_t* vendor;
qse_raddic_vendor_t* vendor, * v;
int i;
dic = qse_raddic_open (QSE_MMGR_GETDFL(), 0);
@ -44,9 +44,10 @@ static int test1 ()
_assert (vendor != QSE_NULL && vendor->vendorpec == 12365, "unabled to find a vendor named Abiyo-aliased.Net");
_assert (qse_strcasecmp(vendor->name, QSE_T("abiyo-aliased.net")) == 0, "unabled to find a vendor of value 12365");
#define COUNT 65535
#define COUNT1 600
#define COUNT2 700
for (i = 0; i < COUNT; i++)
for (i = 0; i < COUNT1; i++)
{
qse_char_t tmp[64];
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("test%d"), i);
@ -56,7 +57,7 @@ static int test1 ()
_assert (qse_strcasecmp(vendor->name, tmp) == 0, "wrong vendor name");
}
for (i = 0; i < COUNT; i++)
for (i = 0; i < COUNT1; i++)
{
qse_char_t tmp[64];
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("test%d"), i);
@ -66,7 +67,7 @@ static int test1 ()
_assert (qse_strcasecmp(vendor->name, tmp) == 0, "wrong vendor name");
}
for (i = 0; i < COUNT; i++)
for (i = 0; i < COUNT1; i++)
{
qse_char_t tmp[64];
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("test%d"), i);
@ -76,6 +77,91 @@ static int test1 ()
_assert (qse_strcasecmp(vendor->name, tmp) == 0, "wrong vendor name");
}
for (i = COUNT1; i < COUNT2; i++)
{
qse_char_t tmp[64];
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("test%d"), i);
vendor = qse_raddic_addvendor (dic, tmp, COUNT1);
// insert different items with the same value
_assert (vendor != QSE_NULL, "unable to add a vendor");
_assert (vendor->vendorpec == COUNT1, "wrong vendor value");
_assert (qse_strcasecmp(vendor->name, tmp) == 0, "wrong vendor name");
v = qse_raddic_findvendorbyvalue (dic, COUNT1);
_assert (vendor == v, "unable to find a last added vendor by value");
}
for (i = COUNT1; i < COUNT2 - 1; i++)
{
qse_char_t tmp[64];
int n;
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("test%d"), i);
n = qse_raddic_deletevendorbyname (dic, tmp);
_assert (n == 0, "unable to delete a vendor");
v = qse_raddic_findvendorbyname (dic, tmp);
_assert (v == QSE_NULL, "vendor found errorenously");
if (i == COUNT2 - 1)
{
v = qse_raddic_findvendorbyvalue (dic, COUNT1);
_assert (v == QSE_NULL, "vendor of COUNT1 found errorenously");
}
else
{
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("test%d"), i + 1);
v = qse_raddic_findvendorbyname (dic, tmp);
_assert (v != QSE_NULL && v->vendorpec == COUNT1 && qse_strcasecmp(tmp, v->name) == 0, "unable to find an expected vendor");
v = qse_raddic_findvendorbyvalue (dic, COUNT1);
_assert (v != QSE_NULL && v->vendorpec == COUNT1, "unable to find the vendor of COUNT1");
}
}
for (i = 0; i < COUNT1; i++)
{
qse_char_t tmp[64];
int n;
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("test%d"), i);
n = qse_raddic_deletevendorbyname (dic, tmp);
_assert (n == 0, "unable to delete a vendor");
}
for (i = 0; i < COUNT1; i++)
{
qse_char_t tmp[64];
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("test%d"), i);
v = qse_raddic_addvendor (dic, tmp, i);
_assert (v != QSE_NULL && v->vendorpec == i, "unable to add a vendor");
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("testx%d"), i);
v = qse_raddic_addvendor (dic, tmp, i);
_assert (v != QSE_NULL && v->vendorpec == i, "unable to add a vendor");
qse_strxfmt(tmp, QSE_COUNTOF(tmp), QSE_T("testy%d"), i);
v = qse_raddic_addvendor (dic, tmp, i);
_assert (v != QSE_NULL && v->vendorpec == i, "unable to add a vendor");
}
for (i = 0; i < COUNT1; i++)
{
int n;
n = qse_raddic_deletevendorbyvalue (dic, i);
_assert (n == 0, "unable to delete a vendor by value");
n = qse_raddic_deletevendorbyvalue (dic, i);
_assert (n == 0, "unable to delete a vendor by value");
n = qse_raddic_deletevendorbyvalue (dic, i);
_assert (n == 0, "unable to delete a vendor by value");
n = qse_raddic_deletevendorbyvalue (dic, i);
_assert (n <= -1, "erroreneously successful vendor deletion by value");
}
qse_raddic_close (dic);
return 0;
}