private async Task <IMethodSymbol> GetMethodSymbolAsync(string file, string name)
{
var code = File.ReadAllText(file);
var tree = CSharpSyntaxTree.ParseText(code);
var compilation = CSharpCompilation.Create(
Guid.NewGuid().ToString("N"),
syntaxTrees: new[] { tree },
references: new[]
{
MetadataReference.CreateFromFile(typeof(object).Assembly.Location),
});
var model = compilation.GetSemanticModel(tree);
var root = await tree.GetRootAsync().ConfigureAwait(false);
return(model.GetDeclaredSymbol(IMethodSymbolExtensionsTests.FindMethodDeclaration(root, name)));
}
private static MethodDeclarationSyntax FindMethodDeclaration(SyntaxNode node, string name)
{
if (node.Kind() == SyntaxKind.MethodDeclaration)
{
var methodNode = node as MethodDeclarationSyntax;
if (methodNode.Identifier.ValueText == name)
{
return(methodNode);
}
}
foreach (var childNode in node.ChildNodes())
{
var childMethodNode = IMethodSymbolExtensionsTests.FindMethodDeclaration(childNode, name);
if (childMethodNode != null)
{
return(childMethodNode);
}
}
return(null);
}