private static void AnalyzeTypeDeclaration(
SymbolAnalysisContext ctx,
AnnotationsContext annotationsContext,
ImmutabilityContext immutabilityContext,
INamedTypeSymbol typeSymbol
)
{
if (typeSymbol.IsImplicitlyDeclared)
{
return;
}
ImmutableAttributeConsistencyChecker consistencyChecker = new ImmutableAttributeConsistencyChecker(
compilation: ctx.Compilation,
diagnosticSink: ctx.ReportDiagnostic,
context: immutabilityContext,
annotationsContext: annotationsContext
);
consistencyChecker.CheckTypeDeclaration(typeSymbol);
if (typeSymbol.TypeKind == TypeKind.Interface)
{
return;
}
if (!annotationsContext.Objects.Immutable.IsDefined(typeSymbol) &&
!annotationsContext.Objects.ConditionallyImmutable.IsDefined(typeSymbol) &&
!annotationsContext.Objects.ImmutableBaseClass.IsDefined(typeSymbol)
)
{
return;
}
if (annotationsContext.Objects.ConditionallyImmutable.IsDefined(typeSymbol))
{
immutabilityContext = immutabilityContext.WithConditionalTypeParametersAsImmutable(typeSymbol);
}
ImmutableDefinitionChecker checker = new ImmutableDefinitionChecker(
compilation: ctx.Compilation,
diagnosticSink: ctx.ReportDiagnostic,
context: immutabilityContext,
annotationsContext: annotationsContext
);
checker.CheckDeclaration(typeSymbol);
}
private static void AnalyzeMember(
SymbolAnalysisContext ctx,
AnnotationsContext annotationsContext,
ImmutabilityContext immutabilityContext
)
{
// We only care about checking static fields/properties. These
// are global variables, so we always want them to be immutable.
// The fields/properties of [Immutable] types get handled via
// AnalyzeTypeDeclaration.
if (!ctx.Symbol.IsStatic)
{
return;
}
// Ignore const things, which include enum names.
if (ctx.Symbol is IFieldSymbol f && f.IsConst)
{
return;
}
// We would like this check to run for generated code too, but
// there are two problems:
// (1) the easy one: we generate some static variables that are
// safe in practice but don't analyze well.
// (2) the hard one: resx code-gen generates some stuff that's
// safe in practice but doesn't analyze well.
if (ctx.Symbol.IsFromGeneratedCode())
{
return;
}
var checker = new ImmutableDefinitionChecker(
compilation: ctx.Compilation,
diagnosticSink: ctx.ReportDiagnostic,
context: immutabilityContext,
annotationsContext: annotationsContext
);
checker.CheckMember(ctx.Symbol);
}