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

     1  // Copyright 2022 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 containers
    16  
    17  import (
    18  	"bytes"
    19  	"io"
    20  
    21  	"github.com/matrixorigin/matrixone/pkg/container/types"
    22  	"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/common"
    23  )
    24  
    25  func GetValueFrom[T types.FixedSizeT](tool *CodecTool, i int) (v T) {
    26  	buf := tool.Get(i)
    27  	v = types.DecodeFixed[T](buf)
    28  	return
    29  }
    30  
    31  type CodecTool struct {
    32  	storage *vector[[]byte]
    33  }
    34  
    35  func NewCodecTool() *CodecTool {
    36  	return &CodecTool{
    37  		storage: NewVector[[]byte](types.T_char.ToType(), false),
    38  	}
    39  }
    40  
    41  func (tool *CodecTool) Close() { tool.storage.Close() }
    42  func (tool *CodecTool) Reset() { tool.storage.Reset() }
    43  func (tool *CodecTool) Write(buf []byte) (n int, err error) {
    44  	tool.storage.Append(buf)
    45  	n = len(buf)
    46  	return
    47  }
    48  
    49  func (tool *CodecTool) WriteTo(w io.Writer) (n int64, err error) {
    50  	return tool.storage.WriteTo(w)
    51  }
    52  
    53  func (tool *CodecTool) ReadFrom(r io.Reader) (n int64, err error) {
    54  	return tool.storage.ReadFrom(r)
    55  }
    56  
    57  func (tool *CodecTool) ReadFromFile(f common.IVFile, buffer *bytes.Buffer) (err error) {
    58  	return tool.storage.ReadFromFile(f, buffer)
    59  }
    60  
    61  func (tool *CodecTool) Allocated() int           { return tool.storage.Allocated() }
    62  func (tool *CodecTool) Elements() int            { return tool.storage.Length() }
    63  func (tool *CodecTool) Get(i int) []byte         { return any(tool.storage.Get(i)).([]byte) }
    64  func (tool *CodecTool) Update(i int, buf []byte) { tool.storage.Update(i, buf) }
    65  func (tool *CodecTool) Delete(i int)             { tool.storage.Delete(i) }