Esempi in C# (CSharp) per PEDeltaAssemblyBuilder

Esempio n. 1

        public void HoistedAnonymousTypes()
        {
            var source0      = @"
using System;

class C
{
    static void F()
    {
        var x1 = new { A = 1 };
        var x2 = new { B = 1 };
        var y = new Func<int>(() => x1.A + x2.B);
    }
}
";
            var source1      = @"
using System;

class C
{
    static void F()
    {
        var x1 = new { A = 1 };
        var x2 = new { b = 1 };
        var y = new Func<int>(() => x1.A + x2.b);
    }
}";
            var compilation0 = CreateStandardCompilation(source0, options: TestOptions.DebugDll);

            var peRef0            = compilation0.EmitToImageReference();
            var peAssemblySymbol0 = (PEAssemblySymbol)CreateStandardCompilation("", new[] { peRef0 }).GetReferencedAssemblySymbol(peRef0);
            var peModule0         = (PEModuleSymbol)peAssemblySymbol0.Modules[0];

            var reader0  = peModule0.Module.MetadataReader;
            var decoder0 = new MetadataDecoder(peModule0);

            var anonymousTypeMap0 = PEDeltaAssemblyBuilder.GetAnonymousTypeMapFromMetadata(reader0, decoder0);

            Assert.Equal("<>f__AnonymousType0", anonymousTypeMap0[new AnonymousTypeKey(ImmutableArray.Create(new AnonymousTypeKeyField("A", isKey: false, ignoreCase: false)))].Name);
            Assert.Equal("<>f__AnonymousType1", anonymousTypeMap0[new AnonymousTypeKey(ImmutableArray.Create(new AnonymousTypeKeyField("B", isKey: false, ignoreCase: false)))].Name);
            Assert.Equal(2, anonymousTypeMap0.Count);

            var compilation1 = CreateStandardCompilation(source1, options: TestOptions.DebugDll);

            var testData = new CompilationTestData();

            compilation1.EmitToArray(testData: testData);
            var peAssemblyBuilder = (PEAssemblyBuilder)testData.Module;

            var c            = compilation1.GetMember <NamedTypeSymbol>("C");
            var displayClass = peAssemblyBuilder.GetSynthesizedTypes(c).Single();

            Assert.Equal("<>c__DisplayClass0_0", displayClass.Name);

            var emitContext = new EmitContext(peAssemblyBuilder, null, new DiagnosticBag());

            var fields = displayClass.GetFields(emitContext).ToArray();
            var x1     = fields[0];
            var x2     = fields[1];

            Assert.Equal("x1", x1.Name);
            Assert.Equal("x2", x2.Name);

            var matcher = new CSharpSymbolMatcher(anonymousTypeMap0, compilation1.SourceAssembly, emitContext, peAssemblySymbol0);

            var mappedX1 = (Cci.IFieldDefinition)matcher.MapDefinition(x1);
            var mappedX2 = (Cci.IFieldDefinition)matcher.MapDefinition(x2);

            Assert.Equal("x1", mappedX1.Name);
            Assert.Null(mappedX2);
        }

Esempio n. 2

File: SymbolMatcherTests.cs Progetto: t-shizha/roslyn

        public void AnonymousTypesWithNullables()
        {
            var source0      = @"
using System;

class C
{
    static T id<T>(T t) => t;
    static T F<T>(Func<T> f) => f();

    static void M(string? x)
    {
        var y1 = new { A = id(x) };
        var y2 = F(() => new { B = id(x) });
        var z = new Func<string>(() => y1.A + y2.B);
    }
}";
            var source1      = @"
using System;

class C
{
    static T id<T>(T t) => t;
    static T F<T>(Func<T> f) => f();

    static void M(string? x)
    {
        if (x is null) throw new Exception();
        var y1 = new { A = id(x) };
        var y2 = F(() => new { B = id(x) });
        var z = new Func<string>(() => y1.A + y2.B);
    }
}";
            var compilation0 = CreateCompilation(source0, options: TestOptions.DebugDll);

            var peRef0            = compilation0.EmitToImageReference();
            var peAssemblySymbol0 = (PEAssemblySymbol)CreateCompilation("", new[] { peRef0 }).GetReferencedAssemblySymbol(peRef0);
            var peModule0         = (PEModuleSymbol)peAssemblySymbol0.Modules[0];

            var reader0  = peModule0.Module.MetadataReader;
            var decoder0 = new MetadataDecoder(peModule0);

            var anonymousTypeMap0 = PEDeltaAssemblyBuilder.GetAnonymousTypeMapFromMetadata(reader0, decoder0);

            Assert.Equal("<>f__AnonymousType0", anonymousTypeMap0[new AnonymousTypeKey(ImmutableArray.Create(new AnonymousTypeKeyField("A", isKey: false, ignoreCase: false)))].Name);
            Assert.Equal("<>f__AnonymousType1", anonymousTypeMap0[new AnonymousTypeKey(ImmutableArray.Create(new AnonymousTypeKeyField("B", isKey: false, ignoreCase: false)))].Name);
            Assert.Equal(2, anonymousTypeMap0.Count);

            var compilation1 = CreateCompilation(source1, options: TestOptions.DebugDll);

            var testData = new CompilationTestData();

            compilation1.EmitToArray(testData: testData);
            var peAssemblyBuilder = (PEAssemblyBuilder)testData.Module;

            var c            = compilation1.GetMember <NamedTypeSymbol>("C");
            var displayClass = peAssemblyBuilder.GetSynthesizedTypes(c).Single();

            Assert.Equal("<>c__DisplayClass2_0", displayClass.Name);

            var emitContext = new EmitContext(peAssemblyBuilder, null, new DiagnosticBag(), metadataOnly: false, includePrivateMembers: true);

            var fields = displayClass.GetFields(emitContext).ToArray();

            AssertEx.SetEqual(fields.Select(f => f.Name), new[] { "x", "y1", "y2" });
            var y1 = fields.Where(f => f.Name == "y1").Single();
            var y2 = fields.Where(f => f.Name == "y2").Single();

            var matcher = new CSharpSymbolMatcher(anonymousTypeMap0, compilation1.SourceAssembly, emitContext, peAssemblySymbol0);

            var mappedY1 = (Cci.IFieldDefinition)matcher.MapDefinition(y1);
            var mappedY2 = (Cci.IFieldDefinition)matcher.MapDefinition(y2);

            Assert.Equal("y1", mappedY1.Name);
            Assert.Equal("y2", mappedY2.Name);
        }