public static void ForWhenLocal()
{
var syntaxTree = CSharpSyntaxTree.ParseText(@"
namespace N
{
public class C
{
public C()
{
var i = 0;
i = 1;
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
Assert.AreEqual(true, semanticModel.TryGetSymbol(syntaxTree.FindVariableDeclaration("i"), CancellationToken.None, out ILocalSymbol local));
using (var walker = IdentifierNameWalker.For(local, semanticModel, CancellationToken.None))
{
CollectionAssert.AreEqual(new[] { "i" }, walker.IdentifierNames.Select(x => x.Identifier.ValueText));
Assert.AreEqual(true, walker.TryFind("i", out var match));
Assert.AreEqual("i", match.Identifier.ValueText);
Assert.AreEqual(false, walker.TryFind("missing", out _));
}
}
public static void ForWhenParameter()
{
var syntaxTree = CSharpSyntaxTree.ParseText(@"
namespace N
{
public class C
{
public C(int i)
{
i = 1;
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, Settings.Default.MetadataReferences);
var semanticModel = compilation.GetSemanticModel(syntaxTree);
Assert.AreEqual(true, semanticModel.TryGetSymbol(syntaxTree.FindParameter("i"), CancellationToken.None, out var parameter));
using var walker = IdentifierNameWalker.For(parameter, semanticModel, CancellationToken.None);
CollectionAssert.AreEqual(new[] { "i" }, walker.IdentifierNames.Select(x => x.Identifier.ValueText));
Assert.AreEqual(true, walker.TryFind("i", out var match));
Assert.AreEqual("i", match.Identifier.ValueText);
Assert.AreEqual(false, walker.TryFind("missing", out _));
}