| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package array |
| |
| import ( |
| "github.com/apache/arrow/go/arrow" |
| "github.com/apache/arrow/go/arrow/bitutil" |
| "github.com/apache/arrow/go/arrow/memory" |
| ) |
| |
| {{range .In}} |
| {{$TypeNamePrefix := .name}} |
| {{if .Opt.BufferBuilder}} |
| type {{$TypeNamePrefix}}BufferBuilder struct { |
| bufferBuilder |
| } |
| |
| func new{{.Name}}BufferBuilder(mem memory.Allocator) *{{$TypeNamePrefix}}BufferBuilder { |
| return &{{$TypeNamePrefix}}BufferBuilder{bufferBuilder:bufferBuilder{refCount: 1, mem:mem}} |
| } |
| |
| // AppendValues appends the contents of v to the buffer, growing the buffer as needed. |
| func (b *{{$TypeNamePrefix}}BufferBuilder) AppendValues(v []{{.Type}}) { b.Append(arrow.{{.Name}}Traits.CastToBytes(v)) } |
| |
| // Values returns a slice of length b.Len(). |
| // The slice is only valid for use until the next buffer modification. That is, until the next call |
| // to Advance, Reset, Finish or any Append function. The slice aliases the buffer content at least until the next |
| // buffer modification. |
| func (b *{{$TypeNamePrefix}}BufferBuilder) Values() []{{.Type}} { return arrow.{{.Name}}Traits.CastFromBytes(b.Bytes()) } |
| |
| // Value returns the {{.Type}} element at the index i. Value will panic if i is negative or ≥ Len. |
| func (b *{{$TypeNamePrefix}}BufferBuilder) Value(i int) {{.Type}} { return b.Values()[i] } |
| |
| // Len returns the number of {{.Type}} elements in the buffer. |
| func (b *{{$TypeNamePrefix}}BufferBuilder) Len() int { return b.length/arrow.{{.Name}}SizeBytes } |
| |
| // AppendValue appends v to the buffer, growing the buffer as needed. |
| func (b *{{$TypeNamePrefix}}BufferBuilder) AppendValue(v {{.Type}}) { |
| if b.capacity < b.length+arrow.{{.Name}}SizeBytes { |
| newCapacity := bitutil.NextPowerOf2(b.length + arrow.{{.Name}}SizeBytes) |
| b.resize(newCapacity) |
| } |
| arrow.{{.Name}}Traits.PutValue(b.bytes[b.length:], v) |
| b.length+=arrow.{{.Name}}SizeBytes |
| } |
| {{end}} |
| {{end}} |