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miyaji255miyaji255
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‎AotCsv.ConsoleApp/AotCsv.ConsoleApp.csproj

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net7.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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<RootNamespace>Oucc.AotCsv.ConsoleApp</RootNamespace>
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</PropertyGroup>
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<ItemGroup>
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<ProjectReference Include="..\AotCsv\AotCsv.Generator\AotCsv.Generator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
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<ProjectReference Include="..\AotCsv\AotCsv\AotCsv.csproj" />
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</ItemGroup>
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</Project>

‎AotCsv.ConsoleApp/GeneratedCodeTarget/SampleModel.cs

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using Oucc.AotCsv.Attributes;
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namespace Oucc.AotCsv.ConsoleApp.GeneratedCodeTarget;
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internal partial class SampleModel
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{
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[CsvName("ID")]
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public int Id { get; set; }
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[CsvName("名")]
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public required string FirstName { get; init; }
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public string? MiddleName { get; private set; }
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[CsvName("姓")]
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public required string LastName { get; init; }
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[CsvIgnore]
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public string FullName
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{
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get => $"{FirstName} {MiddleName} {LastName}";
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set
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{
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var names = value.Split();
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if (names is [_, var middle, _])
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{
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MiddleName = middle;
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}
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}
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}
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[CsvDateTimeFormat("yyyy年MM月dd日")]
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public DateTime BirthDay { get; set; }
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}

‎AotCsv.ConsoleApp/GeneratedCodeTarget/SampleModel.g.cs

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using Oucc.AotCsv.GeneratorHelpers;
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namespace Oucc.AotCsv.ConsoleApp.GeneratedCodeTarget;
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internal partial class SampleModel : ICsvParsable<SampleModel>
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{
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static bool ICsvParsable<SampleModel>.TryParse(CsvParser reader, out SampleModel value)
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{
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throw new NotImplementedException();
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}
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static bool ICsvParsable<SampleModel>.TryWrite(CsvWriter reader, SampleModel value)
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{
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throw new NotImplementedException();
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}
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}

‎AotCsv.ConsoleApp/Program.cs

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Console.WriteLine("Hello, World!");

‎AotCsv.sln

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@@ -9,7 +9,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AotCsv.Package", "AotCsv\Ao
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EndProject
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AotCsv.Test", "AotCsv\AotCsv.Test\AotCsv.Test.csproj", "{8E7951DD-A2D4-48C4-9EB8-AC0AD6452AF2}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AotCsv", "AotCsv\AotCsv\AotCsv.csproj", "{BECBD7AC-595B-4612-BCB1-54840536DD1B}"
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AotCsv", "AotCsv\AotCsv\AotCsv.csproj", "{BECBD7AC-595B-4612-BCB1-54840536DD1B}"
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EndProject
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AotCsv.ConsoleApp", "AotCsv.ConsoleApp\AotCsv.ConsoleApp.csproj", "{F8092B51-A23B-4651-9292-DF9F720B0F7A}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -31,6 +33,10 @@ Global
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{BECBD7AC-595B-4612-BCB1-54840536DD1B}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{BECBD7AC-595B-4612-BCB1-54840536DD1B}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{BECBD7AC-595B-4612-BCB1-54840536DD1B}.Release|Any CPU.Build.0 = Release|Any CPU
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{F8092B51-A23B-4651-9292-DF9F720B0F7A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{F8092B51-A23B-4651-9292-DF9F720B0F7A}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{F8092B51-A23B-4651-9292-DF9F720B0F7A}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{F8092B51-A23B-4651-9292-DF9F720B0F7A}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE

‎AotCsv/AotCsv/AotCsv.csproj

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@@ -4,7 +4,7 @@
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<TargetFrameworks>net7.0</TargetFrameworks>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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<RootNamespace>Oucc.AotCsv.Generator</RootNamespace>
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<RootNamespace>Oucc.AotCsv</RootNamespace>
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</PropertyGroup>
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</Project>

‎AotCsv/AotCsv/Attributes/CsvDateTimeFormatAttribute.cs

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using System.Diagnostics.CodeAnalysis;
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namespace Oucc.AotCsv.Attributes;
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[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = false, Inherited = false)]
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public sealed class CsvDateTimeFormatAttribute : Attribute
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{
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public string DateFormat { get; }
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public CsvDateTimeFormatAttribute([StringSyntax(StringSyntaxAttribute.DateTimeFormat)] string dateFormat)
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{
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DateFormat = dateFormat;
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}
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}

‎AotCsv/AotCsv/Attributes/CsvIgnoreAttribute.cs

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namespace Oucc.AotCsv.Attributes;
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[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = false, Inherited = false)]
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public sealed class CsvIgnoreAttribute : Attribute { }

‎AotCsv/AotCsv/Attributes/CsvNameAttribute.cs

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namespace Oucc.AotCsv.Attributes;
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[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, Inherited = false, AllowMultiple = false)]
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public sealed class CsvNameAttribute : Attribute
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{
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public string Name { get; }
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public CsvNameAttribute(string name)
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{
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Name = name;
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}
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}

‎AotCsv/AotCsv/Class1.cs

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This file was deleted.

‎AotCsv/AotCsv/CsvReader.cs

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using System.Globalization;
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using Oucc.AotCsv.GeneratorHelpers;
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namespace Oucc.AotCsv;
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public class CsvReader
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{
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private CsvParser _parser;
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public CultureInfo Culture { get; }
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public CsvReader(TextReader reader, CultureInfo cultureInfo) : this(new CsvParser(reader, cultureInfo), cultureInfo) { }
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private CsvReader(CsvParser parser, CultureInfo culture)
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{
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_parser = parser;
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Culture = culture;
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}
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public IEnumerable<T> GetRecords<T>() where T : ICsvParsable<T>
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{
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while (T.TryParse(_parser, out var result))
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{
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yield return result;
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}
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}
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}

‎AotCsv/AotCsv/CsvWriter.cs

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namespace Oucc.AotCsv;
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public class CsvWriter
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{
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}

‎AotCsv/AotCsv/GeneratorHelpers/CsvParser.cs

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using System.Buffers;
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using System.Globalization;
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namespace Oucc.AotCsv.GeneratorHelpers;
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public class CsvParser
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{
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// 131072 byte
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private const int ReadBlock = 65536;
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private readonly TextReader _reader;
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private readonly CultureInfo _culture;
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private char[]? _buffer;
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private int _bufferOffset;
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private int _bufferLength;
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internal CsvParser(TextReader reader, CultureInfo culture)
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{
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_reader = reader;
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_culture = culture;
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}
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public FieldState TryGetLine(out ReadOnlySpan<char> line)
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{
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Span<char> spanBuffer;
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if (_buffer is null)
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{
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spanBuffer = _buffer = ArrayPool<char>.Shared.Rent(ReadBlock);
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_bufferOffset = 0;
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_bufferLength = _reader.Read(spanBuffer);
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if (_bufferLength == 0)
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{
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line = default;
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return FieldState.NoLine;
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}
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spanBuffer = spanBuffer[.._bufferLength];
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}
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else
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{
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spanBuffer = _buffer.AsSpan()[_bufferOffset.._bufferLength];
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}
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var endLinePosition = spanBuffer.IndexOfAny('\r', '\n');
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var noLine = false;
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while (endLinePosition < 0)
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{
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noLine = !TryRead();
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spanBuffer = _buffer.AsSpan()[_bufferOffset.._bufferLength];
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endLinePosition = spanBuffer.IndexOfAny('\r', '\n');
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}
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if (spanBuffer[endLinePosition] == '\r')
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{
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if (spanBuffer.Length == endLinePosition + 1)
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{
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noLine = !TryRead();
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spanBuffer = _buffer.AsSpan()[_bufferOffset.._bufferLength];
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}
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if (spanBuffer[endLinePosition + 1] == '\n') _bufferOffset += endLinePosition + 2;
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else _bufferOffset += endLinePosition + 1;
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}
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else _bufferOffset += endLinePosition + 1;
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line = spanBuffer[..endLinePosition];
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return FieldState.HasField;
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}
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private bool TryRead()
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{
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if (_buffer is null)
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{
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Span<char> spanBuffer = _buffer = ArrayPool<char>.Shared.Rent(ReadBlock);
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_bufferOffset = 0;
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_bufferLength = _reader.Read(spanBuffer);
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return _bufferLength != 0;
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}
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else
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{
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Span<char> currentBuffer = _buffer.AsSpan()[_bufferOffset.._bufferLength];
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if (currentBuffer.Length < ReadBlock)
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{
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var nextBuffer = ArrayPool<char>.Shared.Rent(ReadBlock);
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var span = nextBuffer.AsSpan();
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currentBuffer.CopyTo(span);
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var readLength = _reader.Read(span[currentBuffer.Length..]);
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_bufferLength = currentBuffer.Length + readLength;
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ArrayPool<char>.Shared.Return(_buffer);
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_buffer = nextBuffer;
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_bufferOffset = 0;
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return readLength != 0;
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}
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else
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{
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var nextBuffer = ArrayPool<char>.Shared.Rent(currentBuffer.Length + ReadBlock);
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var span = nextBuffer.AsSpan();
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currentBuffer.CopyTo(span);
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var readLength = _reader.Read(span[currentBuffer.Length..]);
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_bufferLength = currentBuffer.Length + readLength;
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ArrayPool<char>.Shared.Return(_buffer);
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_buffer = nextBuffer;
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_bufferOffset = 0;
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return readLength != 0;
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}
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}
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}
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}

‎AotCsv/AotCsv/GeneratorHelpers/FieldState.cs

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namespace Oucc.AotCsv.GeneratorHelpers;
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public enum FieldState: byte
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{
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NoLine,
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NoField,
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HasField
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}

‎AotCsv/AotCsv/ICsvParsable.cs

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using Oucc.AotCsv.GeneratorHelpers;
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namespace Oucc.AotCsv;
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public interface ICsvParsable<T> where T : ICsvParsable<T>
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{
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static abstract bool TryParse(CsvParser reader, out T value);
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static abstract bool TryWrite(CsvWriter reader, T value);
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}

‎ConsoleApp/ConsoleApp.csproj

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net7.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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</Project>

‎ConsoleApp/Program.cs

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// See https://aka.ms/new-console-template for more information
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Console.WriteLine("Hello, World!");

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