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Merge pull request #38 from dotnet-campus/t/lindexi/Generator
通过 SourceGenerator 生成代码
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50 changes: 50 additions & 0 deletions
50
src/TelescopeSourceGenerator/Analyzers/Context_/AssemblyCandidateClassParseResult.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| using System.Collections.Immutable; | ||
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| using Microsoft.CodeAnalysis; | ||
| using Microsoft.CodeAnalysis.CSharp.Syntax; | ||
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| namespace dotnetCampus.Telescope.SourceGeneratorAnalyzers; | ||
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| /// <summary> | ||
| /// 程序集里可能被标记导出的类型 | ||
| /// </summary> | ||
| readonly struct AssemblyCandidateClassParseResult | ||
| { | ||
| public AssemblyCandidateClassParseResult(INamedTypeSymbol exportedTypeSymbol, ImmutableArray<AttributeData> attributes, GeneratorSyntaxContext generatorSyntaxContext) | ||
| { | ||
| ExportedTypeSymbol = exportedTypeSymbol; | ||
| Attributes = attributes; | ||
| GeneratorSyntaxContext = generatorSyntaxContext; | ||
| Success = true; | ||
| } | ||
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| public AssemblyCandidateClassParseResult() | ||
| { | ||
| Success = false; | ||
| ExportedTypeSymbol = default!; // 这个瞬间就被过滤掉了，先不考虑可空的复杂写法了 | ||
| Attributes = default; | ||
| GeneratorSyntaxContext = default; | ||
| } | ||
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| /// <summary> | ||
| /// 导出类型的语义符号 | ||
| /// </summary> | ||
| public INamedTypeSymbol ExportedTypeSymbol { get; } | ||
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| /// <summary> | ||
| /// 导出类型的语法符号 | ||
| /// </summary> | ||
| public ClassDeclarationSyntax ExportedTypeClassDeclarationSyntax => (ClassDeclarationSyntax) GeneratorSyntaxContext.Node; | ||
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| /// <summary> | ||
| /// 类型标记的特性 | ||
| /// </summary> | ||
| public ImmutableArray<AttributeData> Attributes { get; } | ||
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| public GeneratorSyntaxContext GeneratorSyntaxContext { get; } | ||
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| /// <summary> | ||
| /// 是否成功，用于过滤掉不满足条件的对象 | ||
| /// </summary> | ||
| public bool Success { get; } | ||
| } |
47 changes: 47 additions & 0 deletions
47
src/TelescopeSourceGenerator/Analyzers/Context_/MarkClassParseResult.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| using Microsoft.CodeAnalysis; | ||
| using Microsoft.CodeAnalysis.CSharp.Syntax; | ||
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| namespace dotnetCampus.Telescope.SourceGeneratorAnalyzers; | ||
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| /// <summary> | ||
| /// 被标记的类型的转换结果，约等于生成代码前的最终结果 | ||
| /// </summary> | ||
| readonly struct MarkClassParseResult | ||
| { | ||
| public MarkClassParseResult(INamedTypeSymbol exportedTypeSymbol, ClassDeclarationSyntax exportedTypeClassDeclarationSyntax, | ||
| AttributeData matchAssemblyMarkAttributeData, AttributeSyntax matchAssemblyMarkAttributeSyntax, | ||
| MarkExportAttributeParseResult markExportAttributeParseResult, | ||
| GeneratorSyntaxContext generatorSyntaxContext) | ||
| { | ||
| ExportedTypeSymbol = exportedTypeSymbol; | ||
| ExportedTypeClassDeclarationSyntax = exportedTypeClassDeclarationSyntax; | ||
| MatchAssemblyMarkAttributeData = matchAssemblyMarkAttributeData; | ||
| MatchAssemblyMarkAttributeSyntax = matchAssemblyMarkAttributeSyntax; | ||
| MarkExportAttributeParseResult = markExportAttributeParseResult; | ||
| GeneratorSyntaxContext = generatorSyntaxContext; | ||
| } | ||
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| /// <summary> | ||
| /// 导出的 class 类型的语义 | ||
| /// </summary> | ||
| public INamedTypeSymbol ExportedTypeSymbol { get; } | ||
| /// <summary> | ||
| /// 导出的 class 类型的语法 | ||
| /// </summary> | ||
| public ClassDeclarationSyntax ExportedTypeClassDeclarationSyntax { get; } | ||
| /// <summary> | ||
| /// 类型上标记的程序集指定特性的语义 | ||
| /// </summary> | ||
| public AttributeData MatchAssemblyMarkAttributeData { get; } | ||
| /// <summary> | ||
| /// 类型上标记的程序集指定特性的语法 | ||
| /// </summary> | ||
| public AttributeSyntax MatchAssemblyMarkAttributeSyntax { get; } | ||
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| /// <summary> | ||
| /// 程序集特性里面的定义结果 | ||
| /// </summary> | ||
| public MarkExportAttributeParseResult MarkExportAttributeParseResult { get; } | ||
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| public GeneratorSyntaxContext GeneratorSyntaxContext { get; } | ||
| } |
24 changes: 24 additions & 0 deletions
24
src/TelescopeSourceGenerator/Analyzers/Context_/MarkExportAttributeParseResult.cs
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| @@ -0,0 +1,24 @@ | ||
| using Microsoft.CodeAnalysis; | ||
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| namespace dotnetCampus.Telescope.SourceGeneratorAnalyzers; | ||
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| readonly struct MarkExportAttributeParseResult | ||
| { | ||
| public MarkExportAttributeParseResult(bool success, ITypeSymbol baseClassOrInterfaceTypeInfo, | ||
| ITypeSymbol attributeTypeInfo) | ||
| { | ||
| Success = success; | ||
| BaseClassOrInterfaceTypeInfo = baseClassOrInterfaceTypeInfo; | ||
| AttributeTypeInfo = attributeTypeInfo; | ||
| } | ||
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| public bool Success { get; } | ||
| public ITypeSymbol BaseClassOrInterfaceTypeInfo { get; } | ||
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| public ITypeSymbol AttributeTypeInfo { get; } | ||
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| /// <summary> | ||
| /// 获取表示失败的特性解析结果。 | ||
| /// </summary> | ||
| public static MarkExportAttributeParseResult Failure { get; } = new MarkExportAttributeParseResult(false, default!, default!); | ||
| } |
82 changes: 82 additions & 0 deletions
82
src/TelescopeSourceGenerator/Analyzers/Core/AttributeCodeReWriter.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using Microsoft.CodeAnalysis; | ||
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| namespace dotnetCampus.Telescope.SourceGeneratorAnalyzers.Core; | ||
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| static class AttributeCodeReWriter | ||
| { | ||
| /// <summary> | ||
| /// 从 <paramref name="attributeData"/> 转换为特性生成代码。从 `[Foo(xx, xxx)]` 语义转换为 `new Foo(xx, xxx)` 的生成代码 | ||
| /// </summary> | ||
| /// <param name="attributeData"></param> | ||
| /// <returns></returns> | ||
| public static string GetAttributeCreatedCode(AttributeData attributeData) | ||
| { | ||
| // 放在特性的构造函数的参数列表，例如 [Foo(1,2,3)] 将会获取到 `1` `2` `3` 三个参数 | ||
| var constructorArgumentCodeList = new List<string>(); | ||
| foreach (TypedConstant constructorArgument in attributeData.ConstructorArguments) | ||
| { | ||
| var constructorArgumentCode = TypedConstantToCodeString(constructorArgument); | ||
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| constructorArgumentCodeList.Add(constructorArgumentCode); | ||
| } | ||
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| var namedArgumentCodeList = new List<(string propertyName, string valueCode)>(); | ||
| foreach (var keyValuePair in attributeData.NamedArguments) | ||
| { | ||
| var key = keyValuePair.Key; | ||
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| var typedConstant = keyValuePair.Value; | ||
| var argumentCode = TypedConstantToCodeString(typedConstant); | ||
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| namedArgumentCodeList.Add((key, argumentCode)); | ||
| } | ||
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| return | ||
| $@"new {TypeSymbolHelper.TypeSymbolToFullName(attributeData.AttributeClass!)}({string.Join(",", constructorArgumentCodeList)}) | ||
| {{ | ||
| {string.Join(@", | ||
| ", namedArgumentCodeList.Select(x => $"{x.propertyName} = {x.valueCode}"))} | ||
| }}"; | ||
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| static string TypedConstantToCodeString(TypedConstant typedConstant) | ||
| { | ||
| var constructorArgumentType = typedConstant.Type; | ||
| var constructorArgumentValue = typedConstant.Value; | ||
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| string constructorArgumentCode; | ||
| switch (typedConstant.Kind) | ||
| { | ||
| case TypedConstantKind.Enum: | ||
| { | ||
| // "(Foo.Enum1) 1" | ||
| constructorArgumentCode = | ||
| $"({TypeSymbolHelper.TypeSymbolToFullName(typedConstant.Type!)}) {typedConstant.Value}"; | ||
| break; | ||
| } | ||
| case TypedConstantKind.Type: | ||
| { | ||
| var typeSymbol = (ITypeSymbol?)constructorArgumentValue; | ||
| if (typeSymbol is null) | ||
| { | ||
| constructorArgumentCode = "null"; | ||
| } | ||
| else | ||
| { | ||
| constructorArgumentCode = $"typeof({TypeSymbolHelper.TypeSymbolToFullName(typeSymbol)})"; | ||
| } | ||
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| break; | ||
| } | ||
| default: | ||
| { | ||
| constructorArgumentCode = typedConstant.Value?.ToString() ?? "null"; | ||
| break; | ||
| } | ||
| } | ||
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| return constructorArgumentCode; | ||
| } | ||
| } | ||
| } |
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