public void Analyze(string targetPath, Action <Diagnostic> reportDiagnostic, CancellationToken cancellationToken = default(CancellationToken))
{
// Create a Roslyn representation of the IL by constructing a MetadataReference against
// the target path (as if we intended to reference this binary during compilation, instead
// of analyzing it). Using this mechanism, we can scan types/members contained in the
// binary. We cannot currently retrieve IL from method bodies.
var reference = MetadataReference.CreateFromFile(targetPath);
var compilation = CSharpCompilation.Create("_", references: new[] { reference });
var target = compilation.GetAssemblyOrModuleSymbol(reference);
// For each analysis target, we create a compilation start context, which may result
// in symbol action registration. We need to capture and throw these registrations
// away for each binary we inspect.
var compilationStartAnalysisContext = new RoslynCompilationStartAnalysisContext(compilation, _options, cancellationToken);
_perCompilationSymbolsActions = compilationStartAnalysisContext.SymbolActions;
GlobalRoslynAnalysisContext.CompilationStartActions?.Invoke(compilationStartAnalysisContext);
var visitor = new RoslynSymbolVisitor(symbol => Analyze(symbol, compilation, reportDiagnostic, cancellationToken));
visitor.Visit(target);
// Having finished analysis, we'll invoke any compilation end actions registered previously.
// We also discard the per-compilation symbol actions we collected.
var compilationAnalysisContext = new CompilationAnalysisContext(compilation, _options, reportDiagnostic, _isSupportedDiagnostic, cancellationToken);
GlobalRoslynAnalysisContext.CompilationActions?.Invoke(compilationAnalysisContext);
compilationStartAnalysisContext.CompilationEndActions?.Invoke(compilationAnalysisContext);
_perCompilationSymbolsActions = null;
}
private void Analyze(
ISymbol symbol,
Compilation compilation,
ActionMap <SymbolAnalysisContext, SymbolKind> perCompilationSymbolActions,
Action <Diagnostic> reportDiagnostic,
CancellationToken cancellationToken)
{
var symbolContext = new SymbolAnalysisContext(symbol, compilation, _options, reportDiagnostic, _isSupportedDiagnostic, cancellationToken);
this.GlobalRoslynAnalysisContext.SymbolActions.Invoke(symbol.Kind, symbolContext);
perCompilationSymbolActions.Invoke(symbol.Kind, symbolContext);
}
public RoslynCompilationStartAnalysisContext(Compilation compilation, AnalyzerOptions options, CancellationToken cancellationToken)
: base(compilation, options, cancellationToken)
{
SymbolActions = new ActionMap <SymbolAnalysisContext, SymbolKind>();
}