texpr.c

/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "function.h"
#include "os.h"

#include "texception.h"
#include "taosdef.h"
#include "tmsg.h"
#include "tarray.h"
#include "tbuffer.h"
#include "tcompare.h"
#include "thash.h"
#include "texpr.h"
#include "tvariant.h"
#include "tdef.h"

static void doExprTreeDestroy(tExprNode **pExpr, void (*fp)(void *));

void tExprTreeDestroy(tExprNode *pNode, void (*fp)(void *)) {
  if (pNode == NULL) {
    return;
  }

  if (pNode->nodeType == TEXPR_BINARYEXPR_NODE || pNode->nodeType == TEXPR_UNARYEXPR_NODE) {
    doExprTreeDestroy(&pNode, fp);
  }
  taosMemoryFree(pNode);
}

static void doExprTreeDestroy(tExprNode **pExpr, void (*fp)(void *)) {
  if (*pExpr == NULL) {
    return;
  }
  taosMemoryFree(*pExpr);
  *pExpr = NULL;
}

// TODO: these three functions should be made global
static void* exception_calloc(size_t nmemb, size_t size) {
  void* p = taosMemoryCalloc(nmemb, size);
  if (p == NULL) {
    THROW(TSDB_CODE_QRY_OUT_OF_MEMORY);
  }
  return p;
}

static void* exception_malloc(size_t size) {
  void* p = taosMemoryMalloc(size);
  if (p == NULL) {
    THROW(TSDB_CODE_QRY_OUT_OF_MEMORY);
  }
  return p;
}

static UNUSED_FUNC char* exception_strdup(const char* str) {
  char* p = strdup(str);
  if (p == NULL) {
    THROW(TSDB_CODE_QRY_OUT_OF_MEMORY);
  }
  return p;
}