public static void Equal()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
public class C
{
public int M1() => 1;
public int M2() => 2;
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindMethodDeclaration("M1");
var symbol1 = semanticModel.GetDeclaredSymbol(node1, CancellationToken.None);
var node2 = syntaxTree.FindMethodDeclaration("M2");
var symbol2 = semanticModel.GetDeclaredSymbol(node2, CancellationToken.None);
Assert.AreEqual(true, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(false, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, MethodSymbolComparer.Equal(symbol1, symbol1));
Assert.AreEqual(false, MethodSymbolComparer.Equal(symbol1, symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), MethodSymbolComparer.Default.GetHashCode(symbol1));
Assert.AreNotEqual(SymbolComparer.Default.GetHashCode(symbol1), MethodSymbolComparer.Default.GetHashCode(symbol2));
}
public static void Equals()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
public class C
{
public C()
{
var bar1;
var bar2;
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindVariableDeclaration("bar1");
var symbol1 = semanticModel.GetDeclaredSymbol(node1.Variables[0], CancellationToken.None);
var node2 = syntaxTree.FindVariableDeclaration("bar2");
var symbol2 = semanticModel.GetDeclaredSymbol(node2.Variables[0], CancellationToken.None);
Assert.AreEqual(true, SymbolComparer.Equal(symbol1, symbol1));
Assert.AreEqual(false, SymbolComparer.Equal(symbol1, symbol2));
Assert.AreEqual(true, LocalSymbolComparer.Equal((ILocalSymbol)symbol1, (ILocalSymbol)symbol1));
Assert.AreEqual(false, LocalSymbolComparer.Equal((ILocalSymbol)symbol1, (ILocalSymbol)symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), LocalSymbolComparer.Default.GetHashCode((ILocalSymbol)symbol1));
Assert.AreNotEqual(SymbolComparer.Default.GetHashCode(symbol1), LocalSymbolComparer.Default.GetHashCode((ILocalSymbol)symbol2));
}
public static void Equal()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
using System;
public class C
{
public event EventHandler E1;
public event EventHandler E2;
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindEventFieldDeclaration("E1");
var symbol1 = semanticModel.GetDeclaredSymbol(node1.Declaration.Variables[0], CancellationToken.None);
var node2 = syntaxTree.FindEventFieldDeclaration("E2");
var symbol2 = semanticModel.GetDeclaredSymbol(node2.Declaration.Variables[0], CancellationToken.None);
Assert.AreEqual(true, SymbolComparer.Equal(symbol1, symbol1));
Assert.AreEqual(false, SymbolComparer.Equal(symbol1, symbol2));
Assert.AreEqual(true, EventSymbolComparer.Equal((IEventSymbol)symbol1, (IEventSymbol)symbol1));
Assert.AreEqual(false, EventSymbolComparer.Equal((IEventSymbol)symbol1, (IEventSymbol)symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), EventSymbolComparer.Default.GetHashCode((IEventSymbol)symbol1));
Assert.AreNotEqual(SymbolComparer.Default.GetHashCode(symbol1), EventSymbolComparer.Default.GetHashCode((IEventSymbol)symbol2));
}
public static void GenericMethodsArgumentTypeParameterEquals()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
public class C<T>
{
public int M1(T x) => 1;
public int M2(T x) => 2;
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindMethodDeclaration("M1");
var symbol1 = semanticModel.GetDeclaredSymbol(node1, CancellationToken.None).Parameters[0].Type;
var node2 = syntaxTree.FindMethodDeclaration("M2");
var symbol2 = semanticModel.GetDeclaredSymbol(node2, CancellationToken.None).Parameters[0].Type;
Assert.AreEqual(true, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(true, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, TypeSymbolComparer.Equal((ITypeSymbol)symbol1, (ITypeSymbol)symbol1));
Assert.AreEqual(true, TypeSymbolComparer.Equal((ITypeSymbol)symbol1, (ITypeSymbol)symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol1));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol2));
}
public static void GenericPropertiesTypeParameterEquals()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
public class C<T>
{
public T P1 { get; }
public T P2 { get; }
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindPropertyDeclaration("P1");
var symbol1 = semanticModel.GetDeclaredSymbol(node1, CancellationToken.None).Type;
var node2 = syntaxTree.FindPropertyDeclaration("P2");
var symbol2 = semanticModel.GetDeclaredSymbol(node2, CancellationToken.None).Type;
Assert.AreEqual(true, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(true, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, TypeSymbolComparer.Equal((ITypeSymbol)symbol1, (ITypeSymbol)symbol1));
Assert.AreEqual(true, TypeSymbolComparer.Equal((ITypeSymbol)symbol1, (ITypeSymbol)symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol1));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol2));
}
public static void Equals()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
public class C1
{
}
public class C2
{
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindTypeDeclaration("C1");
var symbol1 = semanticModel.GetDeclaredSymbol(node1, CancellationToken.None);
var node2 = syntaxTree.FindTypeDeclaration("C2");
var symbol2 = semanticModel.GetDeclaredSymbol(node2, CancellationToken.None);
Assert.AreEqual(true, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(false, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, TypeSymbolComparer.Equal((ITypeSymbol)symbol1, (ITypeSymbol)symbol1));
Assert.AreEqual(false, TypeSymbolComparer.Equal((ITypeSymbol)symbol1, (ITypeSymbol)symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol1));
Assert.AreNotEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol2));
}
public static void Inherited()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
public class C1
{
protected int F;
}
public class C2 : C1
{
public C2()
{
var temp = this.F;
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindFieldDeclaration("F");
var symbol1 = semanticModel.GetDeclaredSymbol(node1.Declaration.Variables[0], CancellationToken.None);
var node2 = syntaxTree.FindMemberAccessExpression("this.F");
var symbol2 = semanticModel.GetSymbolInfo(node2, CancellationToken.None).Symbol;
Assert.AreEqual(true, SymbolComparer.Equal(symbol1, symbol1));
Assert.AreEqual(true, SymbolComparer.Equal(symbol1, symbol2));
Assert.AreEqual(true, FieldSymbolComparer.Equal((IFieldSymbol)symbol1, (IFieldSymbol)symbol1));
Assert.AreEqual(true, FieldSymbolComparer.Equal((IFieldSymbol)symbol1, (IFieldSymbol)symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), FieldSymbolComparer.Default.GetHashCode((IFieldSymbol)symbol1));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), FieldSymbolComparer.Default.GetHashCode((IFieldSymbol)symbol2));
}
public static void TwoGenericOut()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
class C
{
int M<T>(out T t1, out T t2)
{
t1 = default;
t2 = default;
return 1;
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var parameters = syntaxTree.FindMethodDeclaration("M").ParameterList.Parameters;
var symbol1 = semanticModel.GetDeclaredSymbol(parameters[0], CancellationToken.None);
var symbol2 = semanticModel.GetDeclaredSymbol(parameters[1], CancellationToken.None);
Assert.AreEqual(true, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(false, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, ParameterSymbolComparer.Equal(symbol1, symbol1));
Assert.AreEqual(false, ParameterSymbolComparer.Equal(symbol1, symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), ParameterSymbolComparer.Default.GetHashCode(symbol1));
Assert.AreNotEqual(SymbolComparer.Default.GetHashCode(symbol1), ParameterSymbolComparer.Default.GetHashCode(symbol2));
}