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C++ ARRPTR函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中ARRPTR函数的典型用法代码示例。如果您正苦于以下问题：C++ ARRPTR函数的具体用法？C++ ARRPTR怎么用？C++ ARRPTR使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了ARRPTR函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: g_int_union

Datum
g_int_union(PG_FUNCTION_ARGS)
{
    GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
    int		   *size = (int *) PG_GETARG_POINTER(1);
    int4		i;
    ArrayType  *res;
    int			totlen = 0,
                *ptr;

    for (i = 0; i < entryvec->n; i++)
        totlen += ARRNELEMS(GETENTRY(entryvec, i));

    res = new_intArrayType(totlen);
    ptr = ARRPTR(res);

    for (i = 0; i < entryvec->n; i++)
    {
        memcpy(ptr, ARRPTR(GETENTRY(entryvec, i)), ARRNELEMS(GETENTRY(entryvec, i)) * sizeof(int4));
        ptr += ARRNELEMS(GETENTRY(entryvec, i));
    }

    QSORT(res, 1);
    res = _int_unique(res);
    *size = VARSIZE(res);
    PG_RETURN_POINTER(res);
}
开发者ID:shubham2094，项目名称:postgresql_8.1，代码行数:27，代码来源:_int_gist.c


示例2: g_int_same

Datum
g_int_same(PG_FUNCTION_ARGS)
{
	ArrayType  *a = (ArrayType *) PointerGetDatum(PG_GETARG_POINTER(0));
	ArrayType  *b = (ArrayType *) PointerGetDatum(PG_GETARG_POINTER(1));
	bool	   *result = (bool *) PG_GETARG_POINTER(2);
	int4		n = ARRNELEMS(a);
	int4	   *da,
			   *db;

	CHECKARRVALID(a);
	CHECKARRVALID(b);

	if (n != ARRNELEMS(b))
	{
		*result = false;
		PG_RETURN_POINTER(result);
	}
	*result = TRUE;
	da = ARRPTR(a);
	db = ARRPTR(b);
	while (n--)
		if (*da++ != *db++)
		{
			*result = FALSE;
			break;
		}

	PG_RETURN_POINTER(result);
}
开发者ID:Joe-xXx，项目名称:postgres-old-soon-decommissioned，代码行数:30，代码来源:_int_gist.c


示例3: g_int_union

Datum
g_int_union(PG_FUNCTION_ARGS)
{
	bytea	   *entryvec = (bytea *) PG_GETARG_POINTER(0);
	int		   *size = (int *) PG_GETARG_POINTER(1);
	int4		i,
				len = (VARSIZE(entryvec) - VARHDRSZ) / sizeof(GISTENTRY);
	ArrayType  *res;
	int			totlen = 0,
			   *ptr;

	for (i = 0; i < len; i++)
		totlen += ARRNELEMS(GETENTRY(entryvec, i));

	res = new_intArrayType(totlen);
	ptr = ARRPTR(res);

	for (i = 0; i < len; i++)
	{
		memcpy(ptr, ARRPTR(GETENTRY(entryvec, i)), ARRNELEMS(GETENTRY(entryvec, i)) * sizeof(int4));
		ptr += ARRNELEMS(GETENTRY(entryvec, i));
	}

	QSORT(res, 1);
	res = _int_unique(res);
	*size = VARSIZE(res);
	PG_RETURN_POINTER(res);
}
开发者ID:sunyangkobe，项目名称:cscd43，代码行数:28，代码来源:_int_gist.c


示例4: g_int_same

Datum
g_int_same(PG_FUNCTION_ARGS)
{
	ArrayType  *a = PG_GETARG_ARRAYTYPE_P(0);
	ArrayType  *b = PG_GETARG_ARRAYTYPE_P(1);
	bool	   *result = (bool *) PG_GETARG_POINTER(2);
	int32		n = ARRNELEMS(a);
	int32	   *da,
			   *db;

	CHECKARRVALID(a);
	CHECKARRVALID(b);

	if (n != ARRNELEMS(b))
	{
		*result = false;
		PG_RETURN_POINTER(result);
	}
	*result = TRUE;
	da = ARRPTR(a);
	db = ARRPTR(b);
	while (n--)
	{
		if (*da++ != *db++)
		{
			*result = FALSE;
			break;
		}
	}

	PG_RETURN_POINTER(result);
}
开发者ID:0x0FFF，项目名称:postgres，代码行数:32，代码来源:_int_gist.c


示例5: inner_int_overlap

/* arguments are assumed sorted */
bool
inner_int_overlap(ArrayType *a, ArrayType *b)
{
	int			na,
				nb;
	int			i,
				j;
	int		   *da,
			   *db;

	na = ARRNELEMS(a);
	nb = ARRNELEMS(b);
	da = ARRPTR(a);
	db = ARRPTR(b);

	i = j = 0;
	while (i < na && j < nb)
	{
		if (da[i] < db[j])
			i++;
		else if (da[i] == db[j])
			return TRUE;
		else
			j++;
	}

	return FALSE;
}
开发者ID:kjkszpj，项目名称:PG-SQL，代码行数:29，代码来源:_int_tool.c


示例6: tsvector_strip

Datum
tsvector_strip(PG_FUNCTION_ARGS)
{
	TSVector	in = PG_GETARG_TSVECTOR(0);
	TSVector	out;
	int			i,
				len = 0;
	WordEntry  *arrin = ARRPTR(in),
			   *arrout;
	char	   *cur;

	for (i = 0; i < in->size; i++)
		len += arrin[i].len;

	len = CALCDATASIZE(in->size, len);
	out = (TSVector) palloc0(len);
	SET_VARSIZE(out, len);
	out->size = in->size;
	arrout = ARRPTR(out);
	cur = STRPTR(out);
	for (i = 0; i < in->size; i++)
	{
		memcpy(cur, STRPTR(in) + arrin[i].pos, arrin[i].len);
		arrout[i].haspos = 0;
		arrout[i].len = arrin[i].len;
		arrout[i].pos = cur - STRPTR(out);
		cur += arrout[i].len;
	}

	PG_FREE_IF_COPY(in, 0);
	PG_RETURN_POINTER(out);
}
开发者ID:bocap，项目名称:postgres，代码行数:32，代码来源:tsvector_op.c


示例7: inner_int_contains

/* arguments are assumed sorted & unique-ified */
bool
inner_int_contains(ArrayType *a, ArrayType *b)
{
	int			na,
				nb;
	int			i,
				j,
				n;
	int		   *da,
			   *db;

	na = ARRNELEMS(a);
	nb = ARRNELEMS(b);
	da = ARRPTR(a);
	db = ARRPTR(b);

	i = j = n = 0;
	while (i < na && j < nb)
	{
		if (da[i] < db[j])
			i++;
		else if (da[i] == db[j])
		{
			n++;
			i++;
			j++;
		}
		else
			break;				/* db[j] is not in da */
	}

	return (n == nb) ? TRUE : FALSE;
}
开发者ID:kjkszpj，项目名称:PG-SQL，代码行数:34，代码来源:_int_tool.c


示例8: silly_cmp_tsvector

/*
 * Order: haspos, len, word, for all positions (pos, weight)
 */
static int
silly_cmp_tsvector(const TSVector a, const TSVector b)
{
	if (VARSIZE(a) < VARSIZE(b))
		return -1;
	else if (VARSIZE(a) > VARSIZE(b))
		return 1;
	else if (a->size < b->size)
		return -1;
	else if (a->size > b->size)
		return 1;
	else
	{
		WordEntry  *aptr = ARRPTR(a);
		WordEntry  *bptr = ARRPTR(b);
		int			i = 0;
		int			res;


		for (i = 0; i < a->size; i++)
		{
			if (aptr->haspos != bptr->haspos)
			{
				return (aptr->haspos > bptr->haspos) ? -1 : 1;
			}
			else if ((res = tsCompareString(STRPTR(a) + aptr->pos, aptr->len, STRPTR(b) + bptr->pos, bptr->len, false)) != 0)
			{
				return res;
			}
			else if (aptr->haspos)
			{
				WordEntryPos *ap = POSDATAPTR(a, aptr);
				WordEntryPos *bp = POSDATAPTR(b, bptr);
				int			j;

				if (POSDATALEN(a, aptr) != POSDATALEN(b, bptr))
					return (POSDATALEN(a, aptr) > POSDATALEN(b, bptr)) ? -1 : 1;

				for (j = 0; j < POSDATALEN(a, aptr); j++)
				{
					if (WEP_GETPOS(*ap) != WEP_GETPOS(*bp))
					{
						return (WEP_GETPOS(*ap) > WEP_GETPOS(*bp)) ? -1 : 1;
					}
					else if (WEP_GETWEIGHT(*ap) != WEP_GETWEIGHT(*bp))
					{
						return (WEP_GETWEIGHT(*ap) > WEP_GETWEIGHT(*bp)) ? -1 : 1;
					}
					ap++, bp++;
				}
			}

			aptr++;
			bptr++;
		}
	}

	return 0;
}
开发者ID:bocap，项目名称:postgres，代码行数:62，代码来源:tsvector_op.c


示例9: inner_int_union

ArrayType *
inner_int_union(ArrayType *a, ArrayType *b)
{
	ArrayType  *r = NULL;

	CHECKARRVALID(a);
	CHECKARRVALID(b);

	if (ARRISEMPTY(a) && ARRISEMPTY(b))
		return new_intArrayType(0);
	if (ARRISEMPTY(a))
		r = copy_intArrayType(b);
	if (ARRISEMPTY(b))
		r = copy_intArrayType(a);

	if (!r)
	{
		int			na = ARRNELEMS(a),
					nb = ARRNELEMS(b);
		int		   *da = ARRPTR(a),
				   *db = ARRPTR(b);
		int			i,
					j,
				   *dr;

		r = new_intArrayType(na + nb);
		dr = ARRPTR(r);

		/* union */
		i = j = 0;
		while (i < na && j < nb)
		{
			if (da[i] == db[j])
			{
				*dr++ = da[i++];
				j++;
			}
			else if (da[i] < db[j])
				*dr++ = da[i++];
			else
				*dr++ = db[j++];
		}

		while (i < na)
			*dr++ = da[i++];
		while (j < nb)
			*dr++ = db[j++];

		r = resize_intArrayType(r, dr - ARRPTR(r));
	}

	if (ARRNELEMS(r) > 1)
		r = _int_unique(r);

	return r;
}
开发者ID:kjkszpj，项目名称:PG-SQL，代码行数:56，代码来源:_int_tool.c


示例10: copy_intArrayType

ArrayType *
copy_intArrayType(ArrayType *a)
{
	ArrayType  *r;
	int			n = ARRNELEMS(a);

	r = new_intArrayType(n);
	memcpy(ARRPTR(r), ARRPTR(a), n * sizeof(int4));
	return r;
}
开发者ID:kjkszpj，项目名称:PG-SQL，代码行数:10，代码来源:_int_tool.c


示例11: g_int_decompress

Datum
g_int_decompress(PG_FUNCTION_ARGS)
{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    GISTENTRY  *retval;
    ArrayType  *r;
    int		   *dr,
               lenr;
    ArrayType  *in;
    int			lenin;
    int		   *din;
    int			i,
                j;

    in = (ArrayType *) PG_DETOAST_DATUM(entry->key);

    if (ARRISVOID(in))
        PG_RETURN_POINTER(entry);

    lenin = ARRNELEMS(in);

    if (lenin < 2 * MAXNUMRANGE || ISLEAFKEY(in))
    {   /* not compressed value */
        if (in != (ArrayType *) DatumGetPointer(entry->key))
        {
            retval = palloc(sizeof(GISTENTRY));
            gistentryinit(*retval, PointerGetDatum(in),
                          entry->rel, entry->page, entry->offset, VARSIZE(in), FALSE);

            PG_RETURN_POINTER(retval);
        }
        PG_RETURN_POINTER(entry);
    }

    din = ARRPTR(in);
    lenr = internal_size(din, lenin);

    r = new_intArrayType(lenr);
    dr = ARRPTR(r);

    for (i = 0; i < lenin; i += 2)
        for (j = din[i]; j <= din[i + 1]; j++)
            if ((!i) || *(dr - 1) != j)
                *dr++ = j;

    if (in != (ArrayType *) DatumGetPointer(entry->key))
        pfree(in);
    retval = palloc(sizeof(GISTENTRY));
    gistentryinit(*retval, PointerGetDatum(r),
                  entry->rel, entry->page, entry->offset, VARSIZE(r), FALSE);

    PG_RETURN_POINTER(retval);
}
开发者ID:shubham2094，项目名称:postgresql_8.1，代码行数:53，代码来源:_int_gist.c


示例12: subarray

Datum
subarray(PG_FUNCTION_ARGS)
{
	ArrayType  *a = (ArrayType *) PG_GETARG_ARRAYTYPE_P(0);
	int32		start = PG_GETARG_INT32(1);
	int32		len = (fcinfo->nargs == 3) ? PG_GETARG_INT32(2) : 0;
	int32		end = 0;
	int32		c;
	ArrayType  *result;

	start = (start > 0) ? start - 1 : start;

	CHECKARRVALID(a);
	if (ARRISEMPTY(a))
	{
		PG_FREE_IF_COPY(a, 0);
		PG_RETURN_POINTER(new_intArrayType(0));
	}

	c = ARRNELEMS(a);

	if (start < 0)
		start = c + start;

	if (len < 0)
		end = c + len;
	else if (len == 0)
		end = c;
	else
		end = start + len;

	if (end > c)
		end = c;

	if (start < 0)
		start = 0;

	if (start >= end || end <= 0)
	{
		PG_FREE_IF_COPY(a, 0);
		PG_RETURN_POINTER(new_intArrayType(0));
	}

	result = new_intArrayType(end - start);
	if (end - start > 0)
		memcpy(ARRPTR(result), ARRPTR(a) + start, (end - start) * sizeof(int32));
	PG_FREE_IF_COPY(a, 0);
	PG_RETURN_POINTER(result);
}
开发者ID:50wu，项目名称:gpdb，代码行数:49，代码来源:_int_op.c


示例13: hstorePairs

HStore *
hstorePairs(Pairs *pairs, int4 pcount, int4 buflen)
{
	HStore	   *out;
	HEntry	   *entry;
	char	   *ptr;
	char	   *buf;
	int4		len;
	int4		i;

	len = CALCDATASIZE(pcount, buflen);
	out = palloc(len);
	SET_VARSIZE(out, len);
	HS_SETCOUNT(out, pcount);

	if (pcount == 0)
		return out;

	entry = ARRPTR(out);
	buf = ptr = STRPTR(out);

	for (i = 0; i < pcount; i++)
		HS_ADDITEM(entry, buf, ptr, pairs[i]);

	HS_FINALIZE(out, pcount, buf, ptr);

	return out;
}
开发者ID:d，项目名称:gpdb，代码行数:28，代码来源:hstore_io.c


示例14: hstore_send

Datum
hstore_send(PG_FUNCTION_ARGS)
{
	HStore	   *in = PG_GETARG_HS(0);
	int			i;
	int			count = HS_COUNT(in);
	char	   *base = STRPTR(in);
	HEntry	   *entries = ARRPTR(in);
	StringInfoData buf;

	pq_begintypsend(&buf);

	pq_sendint(&buf, count, 4);

	for (i = 0; i < count; i++)
	{
		int32		keylen = HS_KEYLEN(entries, i);

		pq_sendint(&buf, keylen, 4);
		pq_sendtext(&buf, HS_KEY(entries, base, i), keylen);
		if (HS_VALISNULL(entries, i))
		{
			pq_sendint(&buf, -1, 4);
		}
		else
		{
			int32		vallen = HS_VALLEN(entries, i);

			pq_sendint(&buf, vallen, 4);
			pq_sendtext(&buf, HS_VAL(entries, base, i), vallen);
		}
	}

	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}
开发者ID:d，项目名称:gpdb，代码行数:35，代码来源:hstore_io.c


示例15: gin_extract_tsvector

Datum
gin_extract_tsvector(PG_FUNCTION_ARGS)
{
	TSVector	vector = PG_GETARG_TSVECTOR(0);
	int32	   *nentries = (int32 *) PG_GETARG_POINTER(1);
	Datum	   *entries = NULL;

	*nentries = vector->size;
	if (vector->size > 0)
	{
		int			i;
		WordEntry  *we = ARRPTR(vector);

		entries = (Datum *) palloc(sizeof(Datum) * vector->size);

		for (i = 0; i < vector->size; i++)
		{
			text	   *txt;

			txt = cstring_to_text_with_len(STRPTR(vector) + we->pos, we->len);
			entries[i] = PointerGetDatum(txt);

			we++;
		}
	}

	PG_FREE_IF_COPY(vector, 0);
	PG_RETURN_POINTER(entries);
}
开发者ID:bjornharrtell，项目名称:postgres，代码行数:29，代码来源:tsginidx.c


示例16: intarray_concat_arrays

ArrayType *
intarray_concat_arrays(ArrayType *a, ArrayType *b)
{
	ArrayType  *result;
	int32		ac = ARRNELEMS(a);
	int32		bc = ARRNELEMS(b);

	CHECKARRVALID(a);
	CHECKARRVALID(b);
	result = new_intArrayType(ac + bc);
	if (ac)
		memcpy(ARRPTR(result), ARRPTR(a), ac * sizeof(int32));
	if (bc)
		memcpy(ARRPTR(result) + ac, ARRPTR(b), bc * sizeof(int32));
	return result;
}
开发者ID:kjkszpj，项目名称:PG-SQL，代码行数:16，代码来源:_int_tool.c


示例17: hstore_to_plperl

Datum
hstore_to_plperl(PG_FUNCTION_ARGS)
{
	HStore	   *in = PG_GETARG_HS(0);
	int			i;
	int			count = HS_COUNT(in);
	char	   *base = STRPTR(in);
	HEntry	   *entries = ARRPTR(in);
	HV		   *hv;

	hv = newHV();

	for (i = 0; i < count; i++)
	{
		const char *key;
		SV		   *value;

		key = pnstrdup(HS_KEY(entries, base, i), HS_KEYLEN(entries, i));
		value = HS_VALISNULL(entries, i) ? newSV(0) : cstr2sv(pnstrdup(HS_VAL(entries, base, i), HS_VALLEN(entries, i)));

		(void) hv_store(hv, key, strlen(key), value, 0);
	}

	return PointerGetDatum(newRV((SV *) hv));
}
开发者ID:DBInsight，项目名称:postgres，代码行数:25，代码来源:hstore_plperl.c


示例18: boolop

Datum
boolop(PG_FUNCTION_ARGS)
{
	ArrayType  *val = (ArrayType *) PG_DETOAST_DATUM_COPY(PG_GETARG_POINTER(0));
	QUERYTYPE  *query = (QUERYTYPE *) PG_DETOAST_DATUM(PG_GETARG_POINTER(1));
	CHKVAL		chkval;
	bool		result;

	CHECKARRVALID(val);
	if (ARRISVOID(val))
	{
		pfree(val);
		PG_FREE_IF_COPY(query, 1);
		PG_RETURN_BOOL(false);
	}

	PREPAREARR(val);
	chkval.arrb = ARRPTR(val);
	chkval.arre = chkval.arrb + ARRNELEMS(val);
	result = execute(
					 GETQUERY(query) + query->size - 1,
					 &chkval, true,
					 checkcondition_arr
		);
	pfree(val);

	PG_FREE_IF_COPY(query, 1);
	PG_RETURN_BOOL(result);
}
开发者ID:markwkm，项目名称:postgres，代码行数:29，代码来源:_int_bool.c


示例19: findkey

static HEntry *
findkey(HStore * hs, char *key, int keylen)
{
	HEntry	   *StopLow = ARRPTR(hs);
	HEntry	   *StopHigh = StopLow + hs->size;
	HEntry	   *StopMiddle;
	int			difference;
	char	   *base = STRPTR(hs);

	while (StopLow < StopHigh)
	{
		StopMiddle = StopLow + (StopHigh - StopLow) / 2;

		if (StopMiddle->keylen == keylen)
			difference = strncmp(base + StopMiddle->pos, key, StopMiddle->keylen);
		else
			difference = (StopMiddle->keylen > keylen) ? 1 : -1;

		if (difference == 0)
			return StopMiddle;
		else if (difference < 0)
			StopLow = StopMiddle + 1;
		else
			StopHigh = StopMiddle;
	}

	return NULL;
}
开发者ID:AnLingm，项目名称:gpdb，代码行数:28，代码来源:hstore_op.c


示例20: hstoreValidOldFormat

/*
 * Validity test for an old-format hstore.
 *	0 = not valid
 *	1 = valid but with "slop" in the length
 *	2 = exactly valid
 */
static int
hstoreValidOldFormat(HStore *hs)
{
    int			count = hs->size_;
    HOldEntry  *entries = (HOldEntry *) ARRPTR(hs);
    int			vsize;
    int			lastpos = 0;
    int			i;

    if (hs->size_ & HS_FLAG_NEWVERSION)
        return 0;

    /* New format uses an HEntry for key and another for value */
    StaticAssertStmt(sizeof(HOldEntry) == 2 * sizeof(HEntry),
                     "old hstore format is not upward-compatible");

    if (count == 0)
        return 2;

    if (count > 0xFFFFFFF)
        return 0;

    if (CALCDATASIZE(count, 0) > VARSIZE(hs))
        return 0;

    if (entries[0].pos != 0)
        return 0;

    /* key length must be nondecreasing */

    for (i = 1; i < count; ++i)
    {
        if (entries[i].keylen < entries[i - 1].keylen)
            return 0;
    }

    /*
     * entry position must be strictly increasing, except for the first entry
     * (which can be ""=>"" and thus zero-length); and all entries must be
     * properly contiguous
     */

    for (i = 0; i < count; ++i)
    {
        if (entries[i].pos != lastpos)
            return 0;
        lastpos += (entries[i].keylen
                    + ((entries[i].valisnull) ? 0 : entries[i].vallen));
    }

    vsize = CALCDATASIZE(count, lastpos);

    if (vsize > VARSIZE(hs))
        return 0;

    if (vsize != VARSIZE(hs))
        return 1;

    return 2;
}
开发者ID:kasoku，项目名称:jpug-doc，代码行数:66，代码来源:hstore_compat.c



注：本文中的ARRPTR函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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C++ ARRSIZE函数代码示例发布时间：2022-05-30
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