Method ~ModuleGcFinalize

src/ast/ast_parse.cpp:703–719

        TextWriter * logs = nullptr;
        explicit ModuleGcFinalize ( Program * p ) : prog(p) {}
        ~ModuleGcFinalize() {
            if ( prog ) {
                auto m = prog->thisModule.get();
                gc_root * oldRoot = m->module_gc_root.get();
                auto fresh = make_unique<gc_root>();
                m->gc_collect(oldRoot, fresh.get());   // live oldRoot -> fresh; garbage stays on oldRoot
                if ( logs && gcStageReportEnabled() ) {
                    *logs << "=== gc survivors @ " << m->name << " : live="
                          << fresh->gc_count << " garbage=" << oldRoot->gc_count << " ===\n";
                    gcReportHistogram(*fresh, "live", *logs, 200);
                }
                gc_root * liveRoot = fresh.get();
                gc_root::gc_get_active_root() = liveRoot;   // repoint active before the move frees oldRoot
                m->module_gc_root = das::move(fresh);        // deletes oldRoot -> sweeps garbage
            }
            clearAllFunctionLookups();
        }
        ModuleGcFinalize ( const ModuleGcFinalize & ) = delete;
        ModuleGcFinalize & operator = ( const ModuleGcFinalize & ) = delete;
    };