github.com/matrixorigin/matrixone@v0.7.0/pkg/vm/engine/tae/common/hack.go (about)

     1  // Copyright 2021 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package common
    16  
    17  import (
    18  	"fmt"
    19  
    20  	"github.com/matrixorigin/matrixone/pkg/container/types"
    21  )
    22  
    23  func InplaceDeleteRowsFromSlice[T types.FixedSizeT](v any, rowGen RowGen) any {
    24  	if !rowGen.HasNext() {
    25  		return v
    26  	}
    27  	slice := v.([]T)
    28  	prevRow := -1
    29  	currPos := 0
    30  	for rowGen.HasNext() {
    31  		currRow := int(rowGen.Next())
    32  		copy(slice[currPos:], slice[prevRow+1:currRow])
    33  		currPos += currRow - prevRow - 1
    34  		prevRow = currRow
    35  	}
    36  	left := len(slice[prevRow+1:])
    37  	copy(slice[currPos:], slice[prevRow+1:])
    38  	currPos += left
    39  	return slice[:currPos]
    40  }
    41  
    42  func InplaceDeleteRows(orig any, rowGen RowGen) any {
    43  	if !rowGen.HasNext() {
    44  		return orig
    45  	}
    46  
    47  	switch arr := orig.(type) {
    48  	case []bool:
    49  		return InplaceDeleteRowsFromSlice[bool](arr, rowGen)
    50  	case []int8:
    51  		return InplaceDeleteRowsFromSlice[int8](arr, rowGen)
    52  	case []int16:
    53  		return InplaceDeleteRowsFromSlice[int16](arr, rowGen)
    54  	case []int32:
    55  		return InplaceDeleteRowsFromSlice[int32](arr, rowGen)
    56  	case []int64:
    57  		return InplaceDeleteRowsFromSlice[int64](arr, rowGen)
    58  	case []uint8:
    59  		return InplaceDeleteRowsFromSlice[uint8](arr, rowGen)
    60  	case []uint16:
    61  		return InplaceDeleteRowsFromSlice[uint16](arr, rowGen)
    62  	case []uint32:
    63  		return InplaceDeleteRowsFromSlice[uint32](arr, rowGen)
    64  	case []uint64:
    65  		return InplaceDeleteRowsFromSlice[uint64](arr, rowGen)
    66  	case []types.Timestamp:
    67  		return InplaceDeleteRowsFromSlice[types.Timestamp](arr, rowGen)
    68  	case []types.Decimal64:
    69  		return InplaceDeleteRowsFromSlice[types.Decimal64](arr, rowGen)
    70  	case []types.Decimal128:
    71  		return InplaceDeleteRowsFromSlice[types.Decimal128](arr, rowGen)
    72  	case []types.Uuid:
    73  		return InplaceDeleteRowsFromSlice[types.Uuid](arr, rowGen)
    74  	case []float32:
    75  		return InplaceDeleteRowsFromSlice[float32](arr, rowGen)
    76  	case []float64:
    77  		return InplaceDeleteRowsFromSlice[float64](arr, rowGen)
    78  	case []types.Date:
    79  		return InplaceDeleteRowsFromSlice[types.Date](arr, rowGen)
    80  	case []types.Datetime:
    81  		return InplaceDeleteRowsFromSlice[types.Datetime](arr, rowGen)
    82  	case []types.Time:
    83  		return InplaceDeleteRowsFromSlice[types.Time](arr, rowGen)
    84  	case []types.TS:
    85  		return InplaceDeleteRowsFromSlice[types.TS](arr, rowGen)
    86  	case []types.Rowid:
    87  		return InplaceDeleteRowsFromSlice[types.Rowid](arr, rowGen)
    88  	case []types.Varlena:
    89  		return InplaceDeleteRowsFromSlice[types.Varlena](arr, rowGen)
    90  	}
    91  	panic(fmt.Sprintf("not support: %T", orig))
    92  }