57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_COMMON_VARIANT_H_
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#define _TD_COMMON_VARIANT_H_
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#include "tarray.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// variant, each number/string/field_id has a corresponding struct during parsing sql
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typedef struct SVariant {
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uint32_t nType;
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int32_t nLen; // only used for string, for number, it is useless
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union {
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int64_t i;
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uint64_t u;
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double d;
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char *pz;
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TdUcs4 *ucs4;
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SArray *arr; // only for 'in' query to hold value list, not value for a field
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};
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} SVariant;
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int32_t toInteger(const char *z, int32_t n, int32_t base, int64_t *value);
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int32_t toUInteger(const char *z, int32_t n, int32_t base, uint64_t *value);
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void taosVariantCreateFromBinary(SVariant *pVar, const char *pz, size_t len, uint32_t type);
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void taosVariantDestroy(SVariant *pV);
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void taosVariantAssign(SVariant *pDst, const SVariant *pSrc);
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int32_t taosVariantCompare(const SVariant *p1, const SVariant *p2);
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char *taosVariantGet(SVariant *pVar, int32_t type);
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_COMMON_VARIANT_H_*/
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