87 lines
3.1 KiB
C
87 lines
3.1 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_PARSER_H_
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#define _TD_PARSER_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "parsenodes.h"
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typedef struct SParseContext {
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SParseBasicCtx ctx;
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int8_t schemaAttached; // denote if submit block is built with table schema or not
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const char *pSql; // sql string
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size_t sqlLen; // length of the sql string
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char *pMsg; // extended error message if exists to help identifying the problem in sql statement.
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int32_t msgLen; // max length of the msg
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} SParseContext;
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/**
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* Parse the sql statement and then return the SQueryStmtInfo as the result of bounded AST.
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* @param pSql sql string
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* @param length length of the sql string
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* @param id operator id, generated by uuid generator
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* @param msg extended error message if exists.
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* @return error code
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*/
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int32_t qParseQuerySql(SParseContext* pContext, SQueryNode** pQuery);
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bool qIsDdlQuery(const SQueryNode* pQuery);
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void qDestroyQuery(SQueryNode* pQuery);
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/**
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* Convert a normal sql statement to only query tags information to enable that the subscribe client can be aware quickly of the true vgroup ids that
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* involved in the subscribe procedure.
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* @param pSql
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* @param length
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* @param pConvertSql
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* @return
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*/
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int32_t qParserConvertSql(const char* pStr, size_t length, char** pConvertSql);
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void assignExprInfo(SExprInfo* dst, const SExprInfo* src);
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void columnListCopy(SArray* dst, const SArray* src, uint64_t uid);
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void columnListDestroy(SArray* pColumnList);
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void dropAllExprInfo(SArray** pExprInfo, int32_t numOfLevel);
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typedef struct SSourceParam {
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SArray *pExprNodeList; //Array<struct tExprNode*>
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SArray *pColumnList; //Array<struct SColumn>
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int32_t num;
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} SSourceParam;
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SExprInfo* createExprInfo(STableMetaInfo* pTableMetaInfo, const char* funcName, SSourceParam* pSource, SSchema* pResSchema, int16_t interSize);
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int32_t copyExprInfoList(SArray* dst, const SArray* src, uint64_t uid, bool deepcopy);
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int32_t copyAllExprInfo(SArray* dst, const SArray* src, bool deepcopy);
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int32_t getExprFunctionLevel(const SQueryStmtInfo* pQueryInfo);
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STableMetaInfo* getMetaInfo(const SQueryStmtInfo* pQueryInfo, int32_t tableIndex);
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SSchema *getOneColumnSchema(const STableMeta* pTableMeta, int32_t colIndex);
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SSchema createSchema(uint8_t type, int16_t bytes, int16_t colId, const char* name);
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int32_t getNewResColId();
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void addIntoSourceParam(SSourceParam* pSourceParam, tExprNode* pNode, SColumn* pColumn);
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_PARSER_H_*/
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