SQLite

            testcase( (pDef->funcFlags & OPFLAG_BYTELENARG)==OPFLAG_LENGTHARG );
            testcase( (pDef->funcFlags & OPFLAG_BYTELENARG)==OPFLAG_TYPEOFARG );
            testcase( (pDef->funcFlags & OPFLAG_BYTELENARG)==OPFLAG_BYTELENARG);
            pFarg->a[0].pExpr->op2 = pDef->funcFlags & OPFLAG_BYTELENARG;
          }
        }

        sqlite3ExprCodeExprList(pParse, pFarg, r1, 0, SQLITE_ECEL_FACTOR);

      }else{
        r1 = 0;
      }
#ifndef SQLITE_OMIT_VIRTUALTABLE
      /* Possibly overload the function if the first argument is
      ** a virtual table column.
      **

}


/* Make the JSON in p the result of the SQL function.
*/
static void jsonResult(JsonString *p){
  if( p->bErr==0 ){
    jsonAppendChar(p, 0);
    sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed-1,
                          p->bStatic ? SQLITE_TRANSIENT : sqlite3_free,
                          SQLITE_UTF8);
    jsonZero(p);
  }
  assert( p->bStatic );
}

    memcpy(pOut, &u, 8);
    if( k-i>16 ) return 2;
    if( z[k]!=0 ) return 1;
    return 0;
  }else
#endif /* SQLITE_OMIT_HEX_INTEGER */
  {
    int n = (int)(0x3fffffff&strspn(z,"+- \n\t0123456789"));
    if( z[n] ) n++;
    return sqlite3Atoi64(z, pOut, n, SQLITE_UTF8);
  }
}

/*
** If zNum represents an integer that will fit in 32-bits, then set
** *pValue to that integer and return true.  Otherwise return false.
**

    }
    sqlite3_str_appendf(pStr, " %c%d[", c, pMem->n);
    for(j=0; j<25 && j<pMem->n; j++){
      c = pMem->z[j];
      sqlite3_str_appendchar(pStr, 1, (c>=0x20&&c<=0x7f) ? c : '.');
    }
    sqlite3_str_appendf(pStr, "]%s", encnames[pMem->enc]);
    if( f & MEM_Term ){
      sqlite3_str_appendf(pStr, "(0-term)");
    }
  }
}
#endif

#ifdef SQLITE_DEBUG
/*
** Print the value of a register for tracing purposes:

      */
      sqlite3VdbeSerialGet((u8*)sqlite3CtypeMap, t, pDest);
    }else{
      if( len>db->aLimit[SQLITE_LIMIT_LENGTH] ) goto too_big;
      rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, aOffset[p2], len, pDest);
      if( rc!=SQLITE_OK ) goto abort_due_to_error;
      sqlite3VdbeSerialGet((const u8*)pDest->z, t, pDest);
      if( (t&1)!=0 && encoding==SQLITE_UTF8 ){
        pDest->flags |= MEM_Term;
      }
      pDest->flags &= ~MEM_Ephem;
    }
  }

op_column_out:
  UPDATE_MAX_BLOBSIZE(pDest);
  REGISTER_TRACE(pOp->p3, pDest);

#else
int sqlite3VdbeMemSetZeroBlob(Mem*,int);
#endif
#ifdef SQLITE_DEBUG
int sqlite3VdbeMemIsRowSet(const Mem*);
#endif
int sqlite3VdbeMemSetRowSet(Mem*);
void sqlite3VdbeMemZeroTerminateIfAble(Mem*);
int sqlite3VdbeMemMakeWriteable(Mem*);
int sqlite3VdbeMemStringify(Mem*, u8, u8);
int sqlite3IntFloatCompare(i64,double);
i64 sqlite3VdbeIntValue(const Mem*);
int sqlite3VdbeMemIntegerify(Mem*);
double sqlite3VdbeRealValue(Mem*);
int sqlite3VdbeBooleanValue(Mem*, int ifNull);

    if( enc==SQLITE_UTF16 ) enc = SQLITE_UTF16NATIVE;
    n &= ~(u64)1;
  }
  if( n>0x7fffffff ){
    (void)invokeValueDestructor(z, xDel, pCtx);
  }else{
    setResultStrOrError(pCtx, z, (int)n, enc, xDel);
    sqlite3VdbeMemZeroTerminateIfAble(pCtx->pOut);
  }
}
#ifndef SQLITE_OMIT_UTF16
void sqlite3_result_text16(
  sqlite3_context *pCtx,
  const void *z,
  int n,

    return sqlite3VdbeMemGrow(pMem, szNew, 0);
  }
  assert( (pMem->flags & MEM_Dyn)==0 );
  pMem->z = pMem->zMalloc;
  pMem->flags &= (MEM_Null|MEM_Int|MEM_Real|MEM_IntReal);
  return SQLITE_OK;
}

/*
** If pMem is already a string, detect if it is a zero-terminated
** string, or make it into one if possible, and mark it as such.
**
** This is an optimization.  Correct operation continues even if
** this routine is a no-op.
*/
void sqlite3VdbeMemZeroTerminateIfAble(Mem *pMem){
  if( (pMem->flags & (MEM_Str|MEM_Term))!=MEM_Str ) return;
  if( pMem->enc!=SQLITE_UTF8 ) return;
  if( NEVER(pMem->z==0) ) return;
  if( pMem->flags & MEM_Dyn ){
    if( pMem->xDel==sqlite3_free
     && sqlite3_msize(pMem->z) >= (u64)(pMem->n+1)
     && pMem->z[pMem->n]==0 
    ){
      pMem->flags |= MEM_Term;
      return;
    }
  }else if( pMem->szMalloc>0 && pMem->szMalloc >= pMem->n+1 ){
    pMem->z[pMem->n] = 0;
    pMem->flags |= MEM_Term;
    return;
  }
}

/*
** It is already known that pMem contains an unterminated string.
** Add the zero terminator.
**
** Three bytes of zero are added.  In this way, there is guaranteed
** to be a double-zero byte at an even byte boundary in order to

      break;
    }
    case SQLITE_AFF_REAL: {
      sqlite3VdbeMemRealify(pMem);
      break;
    }
    default: {
      int rc;
      assert( aff==SQLITE_AFF_TEXT );
      assert( MEM_Str==(MEM_Blob>>3) );
      pMem->flags |= (pMem->flags&MEM_Blob)>>3;
      sqlite3ValueApplyAffinity(pMem, SQLITE_AFF_TEXT, encoding);
      assert( pMem->flags & MEM_Str || pMem->db->mallocFailed );
      pMem->flags &= ~(MEM_Int|MEM_Real|MEM_IntReal|MEM_Blob|MEM_Zero);
      if( encoding!=SQLITE_UTF8 ) pMem->n &= ~1;
      rc = sqlite3VdbeChangeEncoding(pMem, encoding);
      if( rc ) return rc;
      sqlite3VdbeMemZeroTerminateIfAble(pMem);
    }
  }
  return SQLITE_OK;
}

/*
** Initialize bulk memory to be a consistent Mem object.