diff --git a/src/EventRegistry.h b/src/EventRegistry.h
index caa9a64153..dae7d82885 100644
--- a/src/EventRegistry.h
+++ b/src/EventRegistry.h
@@ -216,6 +216,16 @@ public:
      */
     void AddFunc(detail::ScriptFuncPtr f);
 
+    /**
+     * @return The name associated with the group.
+     */
+    const auto& GetName() const { return name; }
+
+    /**
+     * @return The type of group.
+     */
+    const auto& GetEventGroupKind() const { return kind; }
+
 private:
     void UpdateFuncBodies();
 
diff --git a/src/Func.cc b/src/Func.cc
index b0d1889282..ea86e31a68 100644
--- a/src/Func.cc
+++ b/src/Func.cc
@@ -295,10 +295,8 @@ ScriptFunc::ScriptFunc(std::string _name, FuncTypePtr ft, std::vector<StmtPtr> b
 
     std::ranges::stable_sort(bodies, std::ranges::greater(), &Body::priority);
 
-    if ( ! bodies.empty() ) {
-        current_body = bodies[0].stmts;
-        current_priority = bodies[0].priority;
-    }
+    if ( ! bodies.empty() )
+        current_body = bodies[0];
 }
 
 ScriptFunc::~ScriptFunc() {
@@ -562,13 +560,9 @@ void ScriptFunc::AddBody(StmtPtr new_body, const std::vector<IDPtr>& new_inits,
         bodies.clear();
     }
 
-    Body b;
-    b.stmts = new_body;
-    b.groups = {groups.begin(), groups.end()};
-    current_body = new_body;
-    current_priority = b.priority = priority;
+    current_body = Body{.stmts = new_body, .groups = {groups.begin(), groups.end()}, .priority = priority};
 
-    bodies.push_back(std::move(b));
+    bodies.push_back(current_body);
     std::ranges::stable_sort(bodies, std::ranges::greater(), &Body::priority);
 }
 
@@ -577,18 +571,15 @@ void ScriptFunc::ReplaceBody(const StmtPtr& old_body, StmtPtr new_body) {
 
     for ( auto body = bodies.begin(); body != bodies.end(); ++body )
         if ( body->stmts.get() == old_body.get() ) {
-            if ( new_body ) {
+            if ( new_body )
                 body->stmts = new_body;
-                current_priority = body->priority;
-            }
             else
                 bodies.erase(body);
 
             found_it = true;
+            current_body = *body;
             break;
         }
-
-    current_body = new_body;
 }
 
 bool ScriptFunc::DeserializeCaptures(BrokerListView data) {
diff --git a/src/Func.h b/src/Func.h
index 250e77c44f..948b0fa7bd 100644
--- a/src/Func.h
+++ b/src/Func.h
@@ -265,8 +265,7 @@ public:
      */
     void ReplaceBody(const detail::StmtPtr& old_body, detail::StmtPtr new_body);
 
-    StmtPtr CurrentBody() const { return current_body; }
-    int CurrentPriority() const { return current_priority; }
+    auto CurrentBody() const { return current_body; }
 
     /**
      * Returns the function's frame size.
@@ -322,11 +321,8 @@ private:
 
     OffsetMap* captures_offset_mapping = nullptr;
 
-    // The most recently added/updated body ...
-    StmtPtr current_body;
-
-    // ... and its priority.
-    int current_priority = 0;
+    // A copy of the most recently added/updated Body.
+    Body current_body;
 };
 
 using built_in_func = ValPtr (*)(Frame* frame, const Args* args);
diff --git a/src/script_opt/CPP/DeclFunc.cc b/src/script_opt/CPP/DeclFunc.cc
index d2d8ec7516..df634f5e46 100644
--- a/src/script_opt/CPP/DeclFunc.cc
+++ b/src/script_opt/CPP/DeclFunc.cc
@@ -1,5 +1,6 @@
 // See the file "COPYING" in the main distribution directory for copyright.
 
+#include "zeek/EventRegistry.h"
 #include "zeek/script_opt/CPP/Compile.h"
 
 namespace zeek::detail {
@@ -15,8 +16,9 @@ void CPPCompile::DeclareFunc(const FuncInfo& func) {
     auto f = func.Func();
     const auto& body = func.Body();
     auto priority = func.Priority();
+    const auto& e_g = func.EventGroups();
 
-    CreateFunction(f->GetType(), pf, fname, body, priority, nullptr, f->Flavor());
+    CreateFunction(f->GetType(), pf, fname, body, priority, nullptr, f->Flavor(), &e_g);
 
     if ( f->GetBodies().size() == 1 )
         compiled_simple_funcs[f->GetName()] = fname;
@@ -42,7 +44,8 @@ void CPPCompile::DeclareLambda(const LambdaExpr* l, const ProfileFunc* pf) {
 }
 
 void CPPCompile::CreateFunction(const FuncTypePtr& ft, const ProfileFunc* pf, const string& fname, const StmtPtr& body,
-                                int priority, const LambdaExpr* l, FunctionFlavor flavor) {
+                                int priority, const LambdaExpr* l, FunctionFlavor flavor,
+                                const std::forward_list<EventGroupPtr>* e_g) {
     const auto& yt = ft->Yield();
     in_hook = flavor == FUNC_FLAVOR_HOOK;
 
@@ -103,9 +106,29 @@ void CPPCompile::CreateFunction(const FuncTypePtr& ft, const ProfileFunc* pf, co
         compiled_funcs.emplace(fname);
     }
 
-    body_hashes[fname] = pf->HashVal();
-    body_priorities[fname] = priority;
-    body_locs[fname] = body->GetLocationInfo();
+    string module_group;
+    vector<string> attr_groups;
+
+    if ( e_g )
+        for ( auto g : *e_g ) {
+            const auto& name = g->GetName();
+
+            if ( g->GetEventGroupKind() == EventGroupKind::Module ) {
+                if ( module_group.empty() )
+                    module_group = g->GetName();
+                else {
+                    ASSERT(module_group == name);
+                }
+            }
+            else
+                attr_groups.push_back(name);
+        }
+
+    body_info[fname] = {.hash = pf->HashVal(),
+                        .priority = priority,
+                        .loc = body->GetLocationInfo(),
+                        .module = module_group,
+                        .groups = std::move(attr_groups)};
     body_names.emplace(body.get(), fname);
 }
 
diff --git a/src/script_opt/CPP/DeclFunc.h b/src/script_opt/CPP/DeclFunc.h
index 1423b2b8fe..19dbffa043 100644
--- a/src/script_opt/CPP/DeclFunc.h
+++ b/src/script_opt/CPP/DeclFunc.h
@@ -32,7 +32,8 @@ void DeclareLambda(const LambdaExpr* l, const ProfileFunc* pf);
 // dynamic casting approach, which only requires one additional class.
 
 void CreateFunction(const FuncTypePtr& ft, const ProfileFunc* pf, const std::string& fname, const StmtPtr& body,
-                    int priority, const LambdaExpr* l, FunctionFlavor flavor);
+                    int priority, const LambdaExpr* l, FunctionFlavor flavor,
+                    const std::forward_list<EventGroupPtr>* e_g = nullptr);
 
 // Used for the case of creating a custom subclass of CPPStmt.
 void DeclareSubclass(const FuncTypePtr& ft, const ProfileFunc* pf, const std::string& fname, const std::string& args,
diff --git a/src/script_opt/CPP/Driver.cc b/src/script_opt/CPP/Driver.cc
index 7011a7d315..986bb46c15 100644
--- a/src/script_opt/CPP/Driver.cc
+++ b/src/script_opt/CPP/Driver.cc
@@ -365,13 +365,23 @@ void CPPCompile::RegisterCompiledBody(const string& f) {
     ASSERT(fi != func_index.end());
     auto type_signature = casting_index[fi->second];
 
-    auto h = body_hashes[f];
-    auto p = body_priorities[f];
-    auto loc = body_locs[f];
+    const auto& bi = body_info[f];
+
+    auto h = bi.hash;
+    auto p = bi.priority;
+    auto loc = bi.loc;
+
     auto body_info = Fmt(p) + ", " + Fmt(h) + ", \"" + loc->FileName() + " (C++)\", " + Fmt(loc->FirstLine());
 
-    Emit("\tCPP_RegisterBody(\"%s\", (void*) %s, %s, %s, std::vector<std::string>(%s)),", f, f, Fmt(type_signature),
-         body_info, events);
+    string module_group = "\"" + bi.module + "\"";
+
+    string attr_groups = "{";
+    for ( const auto& g : bi.groups )
+        attr_groups += " \"" + g + "\",";
+    attr_groups += " }";
+
+    Emit("\tCPP_RegisterBody(\"%s\", (void*) %s, %s, %s, std::vector<std::string>(%s), %s, %s),", f, f,
+         Fmt(type_signature), body_info, events, module_group, attr_groups);
 }
 
 void CPPCompile::GenEpilog() {
@@ -555,8 +565,12 @@ void CPPCompile::GenRegisterBodies() {
         "auto f = make_intrusive<CPPDynStmt>(b.func_name.c_str(), b.func, b.type_signature, "
         "b.filename, b.line_num);");
 
-    auto reg = standalone ? "register_standalone_body" : "register_body";
-    Emit("%s__CPP(f, b.priority, b.h, b.events, finish_init__CPP);", reg);
+    if ( standalone )
+        Emit(
+            "register_standalone_body__CPP(f, b.priority, b.h, b.events, b.module_group, b.attr_groups, "
+            "finish_init__CPP);");
+    else
+        Emit("register_body__CPP(f, b.priority, b.h, b.events, finish_init__CPP);");
     EndBlock();
 
     EndBlock();
diff --git a/src/script_opt/CPP/Emit.h b/src/script_opt/CPP/Emit.h
index 6871c84df8..402f4bb1b6 100644
--- a/src/script_opt/CPP/Emit.h
+++ b/src/script_opt/CPP/Emit.h
@@ -68,6 +68,14 @@ void Emit(const std::string& fmt, const std::string& arg1, const std::string& ar
     NL();
 }
 
+void Emit(const std::string& fmt, const std::string& arg1, const std::string& arg2, const std::string& arg3,
+          const std::string& arg4, const std::string& arg5, const std::string& arg6, const std::string& arg7) const {
+    Indent();
+    fprintf(write_file, fmt.c_str(), arg1.c_str(), arg2.c_str(), arg3.c_str(), arg4.c_str(), arg5.c_str(), arg6.c_str(),
+            arg7.c_str());
+    NL();
+}
+
 void NL() const { fputc('\n', write_file); }
 
 // Indents to the current indentation level.
diff --git a/src/script_opt/CPP/Func.h b/src/script_opt/CPP/Func.h
index 4642c2fdaa..402b8ee0b0 100644
--- a/src/script_opt/CPP/Func.h
+++ b/src/script_opt/CPP/Func.h
@@ -90,6 +90,8 @@ struct CompiledScript {
     CPPStmtPtr body;
     int priority;
     std::vector<std::string> events;
+    std::string module_group;
+    std::vector<std::string> attr_groups;
     void (*finish_init_func)();
 };
 
diff --git a/src/script_opt/CPP/GenFunc.cc b/src/script_opt/CPP/GenFunc.cc
index d171dc5fd4..88d5bfc435 100644
--- a/src/script_opt/CPP/GenFunc.cc
+++ b/src/script_opt/CPP/GenFunc.cc
@@ -224,10 +224,10 @@ p_hash_type CPPCompile::BodyHash(const Stmt* body) {
     ASSERT(bn != body_names.end());
 
     auto& body_name = bn->second;
-    auto bh = body_hashes.find(body_name);
-    ASSERT(bh != body_hashes.end());
+    auto bi = body_info.find(body_name);
+    ASSERT(bi != body_info.end());
 
-    return bh->second;
+    return bi->second.hash;
 }
 
 string CPPCompile::GenArgs(const RecordTypePtr& params, const Expr* e) {
diff --git a/src/script_opt/CPP/GenFunc.h b/src/script_opt/CPP/GenFunc.h
index 13427b9689..eab99052f1 100644
--- a/src/script_opt/CPP/GenFunc.h
+++ b/src/script_opt/CPP/GenFunc.h
@@ -51,15 +51,16 @@ std::unordered_map<std::string, std::string> compiled_simple_funcs;
 // Maps function bodies to the names we use for them.
 std::unordered_map<const Stmt*, std::string> body_names;
 
-// Maps function names to hashes of bodies.
-std::unordered_map<std::string, p_hash_type> body_hashes;
+struct BodyInfo {
+    p_hash_type hash;
+    int priority;
+    const Location* loc;             // for better-than-nothing error reporting
+    std::string module;              // if non-nil, used for "module" event groups
+    std::vector<std::string> groups; // attribute-based event groups
+};
 
-// Maps function names to priorities, for hooks & event handlers.
-std::unordered_map<std::string, int> body_priorities;
-
-// Maps function names to script locations, for better-than-nothing error
-// reporting.
-std::unordered_map<std::string, const Location*> body_locs;
+// Maps function names to their body info.
+std::unordered_map<std::string, BodyInfo> body_info;
 
 // Maps function names to events relevant to them.
 std::unordered_map<std::string, std::vector<std::string>> body_events;
diff --git a/src/script_opt/CPP/Inits.cc b/src/script_opt/CPP/Inits.cc
index a73b96a379..3ac691fd8d 100644
--- a/src/script_opt/CPP/Inits.cc
+++ b/src/script_opt/CPP/Inits.cc
@@ -285,9 +285,9 @@ void CPPCompile::GenStandaloneActivation() {
             // We didn't wind up compiling it.
             continue;
 
-        auto bh = body_hashes.find(bname);
-        ASSERT(bh != body_hashes.end());
-        func_bodies[f].push_back(bh->second);
+        auto bi = body_info.find(bname);
+        ASSERT(bi != body_info.end());
+        func_bodies[f].push_back(bi->second.hash);
     }
 
     for ( auto& fb : func_bodies ) {
diff --git a/src/script_opt/CPP/RuntimeInitSupport.cc b/src/script_opt/CPP/RuntimeInitSupport.cc
index 0306e53120..0fb627ba56 100644
--- a/src/script_opt/CPP/RuntimeInitSupport.cc
+++ b/src/script_opt/CPP/RuntimeInitSupport.cc
@@ -46,16 +46,18 @@ void register_type__CPP(TypePtr t, const string& name) {
 }
 
 void register_body__CPP(CPPStmtPtr body, int priority, p_hash_type hash, vector<string> events, void (*finish_init)()) {
-    compiled_scripts[hash] = {std::move(body), priority, std::move(events), finish_init};
+    compiled_scripts[hash] = {std::move(body), priority, std::move(events), {}, {}, finish_init};
 }
 
 static unordered_map<p_hash_type, CompiledScript> compiled_standalone_scripts;
 
 void register_standalone_body__CPP(CPPStmtPtr body, int priority, p_hash_type hash, vector<string> events,
+                                   std::string module_group, std::vector<std::string> attr_groups,
                                    void (*finish_init)()) {
     // For standalone scripts we don't actually need finish_init, but
     // we keep it for symmetry with compiled_scripts.
-    compiled_standalone_scripts[hash] = {std::move(body), priority, std::move(events), finish_init};
+    compiled_standalone_scripts[hash] = {std::move(body),        priority,   std::move(events), std::move(module_group),
+                                         std::move(attr_groups), finish_init};
 }
 
 void register_lambda__CPP(CPPStmtPtr body, p_hash_type hash, const char* name, TypePtr t, bool has_captures) {
@@ -86,6 +88,19 @@ void register_scripts__CPP(p_hash_type h, void (*callback)()) {
     standalone_callbacks[h] = callback;
 }
 
+// Updates "groups" with the event groups present in "cs".
+static void update_event_groups(const CompiledScript& cs, unordered_set<EventGroupPtr> groups) {
+    if ( ! cs.module_group.empty() ) {
+        auto er = event_registry->RegisterGroup(EventGroupKind::Module, cs.module_group);
+        groups.insert(std::move(er));
+    }
+
+    for ( const auto& g : cs.attr_groups ) {
+        auto er = event_registry->RegisterGroup(EventGroupKind::Attribute, g);
+        groups.insert(std::move(er));
+    }
+}
+
 void activate_bodies__CPP(const char* fn, const char* module, bool exported, TypePtr t, vector<p_hash_type> hashes) {
     auto ft = cast_intrusive<FuncType>(t);
     auto fg = lookup_ID(fn, module, false, false, false);
@@ -108,7 +123,7 @@ void activate_bodies__CPP(const char* fn, const char* module, bool exported, Typ
         fg->SetVal(v);
     }
 
-    auto f = v->AsFunc();
+    auto f = cast_intrusive<ScriptFunc>(v->AsFuncVal()->AsFuncPtr());
 
     // Events we need to register.
     unordered_set<string> events;
@@ -116,6 +131,9 @@ void activate_bodies__CPP(const char* fn, const char* module, bool exported, Typ
     if ( ft->Flavor() == FUNC_FLAVOR_EVENT )
         events.insert(fn);
 
+    // Groups we need to add f to.
+    unordered_set<EventGroupPtr> groups;
+
     vector<detail::IDPtr> no_inits; // empty initialization vector
     int num_params = ft->Params()->NumFields();
 
@@ -129,10 +147,15 @@ void activate_bodies__CPP(const char* fn, const char* module, bool exported, Typ
         added_bodies[fn].insert(h);
 
         events.insert(cs.events.begin(), cs.events.end());
+
+        update_event_groups(cs, groups);
     }
 
     for ( const auto& e : events )
         event_registry->Register(e);
+
+    for ( auto& g : groups )
+        g->AddFunc(f);
 }
 
 IDPtr lookup_global__CPP(const char* g, const TypePtr& t, bool exported) {
@@ -174,6 +197,7 @@ FuncValPtr lookup_func__CPP(string name, int num_bodies, vector<p_hash_type> has
 
     vector<StmtPtr> bodies;
     vector<int> priorities;
+    unordered_set<EventGroupPtr> groups;
 
     for ( auto h : hashes ) {
         auto cs = compiled_scripts.find(h);
@@ -192,10 +216,15 @@ FuncValPtr lookup_func__CPP(string name, int num_bodies, vector<p_hash_type> has
         // the semantics for Register explicitly allow it.
         for ( auto& e : f.events )
             event_registry->Register(e);
+
+        update_event_groups(f, groups);
     }
 
     auto sf = make_intrusive<ScriptFunc>(std::move(name), std::move(ft), std::move(bodies), std::move(priorities));
 
+    for ( auto& g : groups )
+        g->AddFunc(sf);
+
     return make_intrusive<FuncVal>(std::move(sf));
 }
 
diff --git a/src/script_opt/CPP/RuntimeInitSupport.h b/src/script_opt/CPP/RuntimeInitSupport.h
index fb016eb338..40f40ffe7c 100644
--- a/src/script_opt/CPP/RuntimeInitSupport.h
+++ b/src/script_opt/CPP/RuntimeInitSupport.h
@@ -47,7 +47,8 @@ extern void register_body__CPP(CPPStmtPtr body, int priority, p_hash_type hash,
 
 // Same but for standalone function bodies.
 extern void register_standalone_body__CPP(CPPStmtPtr body, int priority, p_hash_type hash,
-                                          std::vector<std::string> events, void (*finish_init)());
+                                          std::vector<std::string> events, std::string module_group,
+                                          std::vector<std::string> attr_groups, void (*finish_init)());
 
 // Registers a lambda body as associated with the given hash.  Includes
 // the name of the lambda (so it can be made available as a quasi-global
diff --git a/src/script_opt/CPP/RuntimeInits.h b/src/script_opt/CPP/RuntimeInits.h
index c1fa9f87da..024dac961e 100644
--- a/src/script_opt/CPP/RuntimeInits.h
+++ b/src/script_opt/CPP/RuntimeInits.h
@@ -544,7 +544,8 @@ protected:
 // code that loops over a vector of these to perform the registrations.
 struct CPP_RegisterBody {
     CPP_RegisterBody(std::string _func_name, void* _func, int _type_signature, int _priority, p_hash_type _h,
-                     const char* _filename, int _line_num, std::vector<std::string> _events)
+                     const char* _filename, int _line_num, std::vector<std::string> _events, std::string _module_group,
+                     std::vector<std::string> _attr_groups)
         : func_name(std::move(_func_name)),
           func(_func),
           type_signature(_type_signature),
@@ -552,7 +553,9 @@ struct CPP_RegisterBody {
           h(_h),
           filename(_filename),
           line_num(_line_num),
-          events(std::move(_events)) {}
+          events(std::move(_events)),
+          module_group(std::move(_module_group)),
+          attr_groups(std::move(_attr_groups)) {}
 
     std::string func_name; // name of the function
     void* func;            // pointer to C++
@@ -562,6 +565,8 @@ struct CPP_RegisterBody {
     const char* filename;
     int line_num;
     std::vector<std::string> events;
+    std::string module_group;
+    std::vector<std::string> attr_groups;
 };
 
 } // namespace zeek::detail
diff --git a/src/script_opt/Inline.cc b/src/script_opt/Inline.cc
index 73d78d3b92..da06aba9ec 100644
--- a/src/script_opt/Inline.cc
+++ b/src/script_opt/Inline.cc
@@ -299,7 +299,11 @@ void Inliner::CoalesceEventHandlers(ScriptFuncPtr func, const std::vector<Func::
 
     PostInline(oi, inlined_func);
 
-    funcs.emplace_back(inlined_func, new_scope, merged_body, 0);
+    // We don't need to worry about event groups because the CoalescedScriptFunc
+    // wrapper checks at run-time for whether any handlers have been disabled,
+    // and if so skips coalesced execution.
+    Func::Body body{.stmts = merged_body, .priority = 0};
+    funcs.emplace_back(inlined_func, new_scope, std::move(body));
 
     auto pf = std::make_shared<ProfileFunc>(inlined_func.get(), merged_body, true);
     funcs.back().SetProfile(std::move(pf));
diff --git a/src/script_opt/ScriptOpt.cc b/src/script_opt/ScriptOpt.cc
index b13649b488..5a1e5656bc 100644
--- a/src/script_opt/ScriptOpt.cc
+++ b/src/script_opt/ScriptOpt.cc
@@ -41,7 +41,7 @@ void analyze_func(ScriptFuncPtr f) {
     // Even if we're analyzing only a subset of the scripts, we still
     // track all functions here because the inliner will need the full list.
     ASSERT(f->GetScope());
-    funcs.emplace_back(f, f->GetScope(), f->CurrentBody(), f->CurrentPriority());
+    funcs.emplace_back(f, f->GetScope(), f->CurrentBody());
 }
 
 void analyze_lambda(LambdaExpr* l) {
@@ -78,7 +78,8 @@ void analyze_global_stmts(Stmt* stmts) {
     global_stmts->SetScope(sc);
 
     global_stmts_ind = funcs.size();
-    funcs.emplace_back(global_stmts, sc, stmts->ThisPtr(), 0);
+    Func::Body body{.stmts = stmts->ThisPtr(), .priority = 0};
+    funcs.emplace_back(global_stmts, sc, std::move(body));
 }
 
 std::pair<StmtPtr, ScopePtr> get_global_stmts() {
@@ -90,7 +91,7 @@ std::pair<StmtPtr, ScopePtr> get_global_stmts() {
 void add_func_analysis_pattern(AnalyOpt& opts, const char* pat) {
     try {
         std::string full_pat = std::string("^(") + pat + ")$";
-        opts.only_funcs.emplace_back(full_pat);
+        opts.only_funcs.emplace_back(std::move(full_pat));
     } catch ( const std::regex_error& e ) {
         reporter->FatalError("bad file analysis pattern: %s", pat);
     }
@@ -99,7 +100,7 @@ void add_func_analysis_pattern(AnalyOpt& opts, const char* pat) {
 void add_file_analysis_pattern(AnalyOpt& opts, const char* pat) {
     try {
         std::string full_pat = std::string("^.*(") + pat + ").*$";
-        opts.only_files.emplace_back(full_pat);
+        opts.only_files.emplace_back(std::move(full_pat));
     } catch ( const std::regex_error& e ) {
         reporter->FatalError("bad file analysis pattern: %s", pat);
     }
diff --git a/src/script_opt/ScriptOpt.h b/src/script_opt/ScriptOpt.h
index ac188cd979..f7a6169cc2 100644
--- a/src/script_opt/ScriptOpt.h
+++ b/src/script_opt/ScriptOpt.h
@@ -149,19 +149,20 @@ using ScriptFuncPtr = IntrusivePtr<ScriptFunc>;
 // Info we need for tracking an instance of a function.
 class FuncInfo {
 public:
-    FuncInfo(ScriptFuncPtr _func, ScopePtr _scope, StmtPtr _body, int _priority)
-        : func(std::move(_func)), scope(std::move(_scope)), body(std::move(_body)), priority(_priority) {}
+    FuncInfo(ScriptFuncPtr _func, ScopePtr _scope, Func::Body _body)
+        : func(std::move(_func)), scope(std::move(_scope)), body(std::move(_body)) {}
 
     ScriptFunc* Func() const { return func.get(); }
     const ScriptFuncPtr& FuncPtr() const { return func; }
     const ScopePtr& Scope() const { return scope; }
-    const StmtPtr& Body() const { return body; }
-    int Priority() const { return priority; }
+    const StmtPtr& Body() const { return body.stmts; }
+    int Priority() const { return body.priority; }
+    auto EventGroups() const { return body.groups; }
     const ProfileFunc* Profile() const { return pf.get(); }
     std::shared_ptr<ProfileFunc> ProfilePtr() const { return pf; }
 
     void SetScope(ScopePtr new_scope) { scope = std::move(new_scope); }
-    void SetBody(StmtPtr new_body) { body = std::move(new_body); }
+    void SetBody(StmtPtr new_body) { body.stmts = std::move(new_body); }
     void SetProfile(std::shared_ptr<ProfileFunc> _pf) { pf = std::move(_pf); }
 
     bool ShouldAnalyze() const { return should_analyze; }
@@ -178,9 +179,8 @@ public:
 protected:
     ScriptFuncPtr func;
     ScopePtr scope;
-    StmtPtr body;
+    Func::Body body;
     std::shared_ptr<ProfileFunc> pf;
-    int priority;
 
     // Whether to analyze this function at all, per optimization selection
     // via --optimize-file/--optimize-func.  If those flags aren't used,