Refactor Hook management to have a well defined list of hooks

Hooks are now an enum class instead of passing strings around.

src/buffer.cc

@@ -114,16 +114,16 @@ void Buffer::on_registered()
         return;
     }
 
-    run_hook_in_own_context("BufCreate", m_name);
+    run_hook_in_own_context(Hook::BufCreate, m_name);
 
     if (m_flags & Flags::File)
     {
         if (m_flags & Buffer::Flags::New)
-            run_hook_in_own_context("BufNewFile", m_name);
+            run_hook_in_own_context(Hook::BufNewFile, m_name);
         else
         {
             kak_assert(m_fs_timestamp != InvalidTime);
-            run_hook_in_own_context("BufOpenFile", m_name);
+            run_hook_in_own_context(Hook::BufOpenFile, m_name);
         }
     }
 
@@ -139,7 +139,7 @@ void Buffer::on_unregistered()
         return;
 
     options().unregister_watcher(*this);
-    run_hook_in_own_context("BufClose", m_name);
+    run_hook_in_own_context(Hook::BufClose, m_name);
 }
 
 Buffer::~Buffer()
@@ -687,11 +687,11 @@ void Buffer::on_option_changed(const Option& option)
         else
             m_flags &= ~Flags::ReadOnly;
     }
-    run_hook_in_own_context("BufSetOption",
+    run_hook_in_own_context(Hook::BufSetOption,
                             format("{}={}", option.name(), option.get_as_string(Quoting::Kakoune)));
 }
 
-void Buffer::run_hook_in_own_context(StringView hook_name, StringView param, String client_name)
+void Buffer::run_hook_in_own_context(Hook hook, StringView param, String client_name)
 {
     if (m_flags & Buffer::Flags::NoHooks)
         return;
@@ -699,7 +699,7 @@ void Buffer::run_hook_in_own_context(StringView hook_name, StringView param, Str
     InputHandler hook_handler{{ *this, Selection{} },
                               Context::Flags::Draft,
                               std::move(client_name)};
-    hooks().run_hook(hook_name, param, hook_handler.context());
+    hooks().run_hook(hook, param, hook_handler.context());
 }
 
 Optional<BufferCoord> Buffer::last_modification_coord() const

src/buffer.hh

@@ -199,7 +199,7 @@ public:
 
     ValueMap& values() const { return m_values; }
 
-    void run_hook_in_own_context(StringView hook_name, StringView param,
+    void run_hook_in_own_context(Hook hook, StringView param,
                                  String client_name = {});
 
     void reload(StringView data, timespec fs_timestamp = InvalidTime);

src/buffer_utils.cc

@@ -107,7 +107,7 @@ Buffer* create_fifo_buffer(String name, int fd, Buffer::Flags flags, bool scroll
     auto watcher_deleter = [buffer](FDWatcher* watcher) {
         kak_assert(buffer->flags() & Buffer::Flags::Fifo);
         watcher->close_fd();
-        buffer->run_hook_in_own_context("BufCloseFifo", "");
+        buffer->run_hook_in_own_context(Hook::BufCloseFifo, "");
         buffer->flags() &= ~(Buffer::Flags::Fifo | Buffer::Flags::NoUndo);
         delete watcher;
     };
@@ -157,12 +157,12 @@ Buffer* create_fifo_buffer(String name, int fd, Buffer::Flags flags, bool scroll
         }
         while (--loops and fd_readable(fifo));
 
-        buffer->run_hook_in_own_context("BufReadFifo", buffer->name());
+        buffer->run_hook_in_own_context(Hook::BufReadFifo, buffer->name());
     }), std::move(watcher_deleter));
 
     buffer->values()[fifo_watcher_id] = Value(std::move(watcher));
     buffer->flags() = flags | Buffer::Flags::Fifo | Buffer::Flags::NoUndo;
-    buffer->run_hook_in_own_context("BufOpenFifo", buffer->name());
+    buffer->run_hook_in_own_context(Hook::BufOpenFifo, buffer->name());
 
     return buffer;
 }

src/client.cc

@@ -57,7 +57,7 @@ Client::Client(std::unique_ptr<UserInterface>&& ui,
             m_pending_keys.push_back(key);
     });
 
-    m_window->hooks().run_hook("WinDisplay", m_window->buffer().name(), context());
+    m_window->hooks().run_hook(Hook::WinDisplay, m_window->buffer().name(), context());
 
     force_redraw();
 }
@@ -91,20 +91,20 @@ bool Client::process_pending_inputs()
                                              context().name(), key_to_str(key)));
 
             if (key == Key::FocusIn)
-                context().hooks().run_hook("FocusIn", context().name(), context());
+                context().hooks().run_hook(Hook::FocusIn, context().name(), context());
             else if (key == Key::FocusOut)
-                context().hooks().run_hook("FocusOut", context().name(), context());
+                context().hooks().run_hook(Hook::FocusOut, context().name(), context());
             else
                 m_input_handler.handle_key(key);
 
-            context().hooks().run_hook("RawKey", key_to_str(key), context());
+            context().hooks().run_hook(Hook::RawKey, key_to_str(key), context());
         }
         catch (Kakoune::runtime_error& error)
         {
             write_to_debug_buffer(format("Error: {}", error.what()));
             context().print_status({ fix_atom_text(error.what().str()),
                                      context().faces()["Error"] });
-            context().hooks().run_hook("RuntimeError", error.what(), context());
+            context().hooks().run_hook(Hook::RuntimeError, error.what(), context());
         }
     }
     return not keys.empty();
@@ -188,7 +188,7 @@ void Client::change_buffer(Buffer& buffer)
     context().set_window(*m_window);
     m_window->set_dimensions(m_ui->dimensions());
 
-    m_window->hooks().run_hook("WinDisplay", buffer.name(), context());
+    m_window->hooks().run_hook(Hook::WinDisplay, buffer.name(), context());
     force_redraw();
 }
 
@@ -284,7 +284,7 @@ void Client::reload_buffer()
         context().print_status({ format("'{}' reloaded", buffer.display_name()),
                                  context().faces()["Information"] });
 
-        m_window->hooks().run_hook("BufReload", buffer.name(), context());
+        m_window->hooks().run_hook(Hook::BufReload, buffer.name(), context());
     }
     catch (runtime_error& error)
     {

src/client_manager.cc

@@ -67,7 +67,7 @@ Client* ClientManager::create_client(std::unique_ptr<UserInterface>&& ui, int pi
     {
         client->context().print_status({ fix_atom_text(error.what().str()),
                                          client->context().faces()["Error"] });
-        client->context().hooks().run_hook("RuntimeError", error.what(),
+        client->context().hooks().run_hook(Hook::RuntimeError, error.what(),
                                            client->context());
     }
 

src/commands.cc

@@ -344,9 +344,9 @@ void do_write_buffer(Context& context, Optional<String> filename, bool sync_file
 
     auto effective_filename = not filename ? buffer.name() : parse_filename(*filename);
 
-    context.hooks().run_hook("BufWritePre", effective_filename, context);
+    context.hooks().run_hook(Hook::BufWritePre, effective_filename, context);
     write_buffer_to_file(buffer, effective_filename, force, sync_file);
-    context.hooks().run_hook("BufWritePost", effective_filename, context);
+    context.hooks().run_hook(Hook::BufWritePost, effective_filename, context);
 }
 
 template<bool force = false>
@@ -395,9 +395,9 @@ void write_all_buffers(Context& context, bool sync = false)
              buffer->is_modified())
             and !(buffer->flags() & Buffer::Flags::ReadOnly))
         {
-            buffer->run_hook_in_own_context("BufWritePre", buffer->name(), context.name());
+            buffer->run_hook_in_own_context(Hook::BufWritePre, buffer->name(), context.name());
             write_buffer_to_file(*buffer, buffer->name(), sync);
-            buffer->run_hook_in_own_context("BufWritePost", buffer->name(), context.name());
+            buffer->run_hook_in_own_context(Hook::BufWritePost, buffer->name(), context.name());
         }
     }
 }
@@ -819,20 +819,10 @@ const CommandDesc remove_highlighter_cmd = {
     }
 };
 
-static constexpr auto hooks = {
-    "BufCreate", "BufNewFile", "BufOpenFile", "BufClose", "BufWritePost", "BufReload",
-    "BufWritePre", "BufOpenFifo", "BufCloseFifo", "BufReadFifo", "BufSetOption",
-    "InsertBegin", "InsertChar", "InsertDelete", "InsertEnd", "InsertIdle", "InsertKey",
-    "InsertMove", "InsertCompletionHide", "InsertCompletionShow", "InsertCompletionSelect",
-    "KakBegin", "KakEnd", "FocusIn", "FocusOut", "GlobalSetOption", "RuntimeError", "PromptIdle",
-    "NormalBegin", "NormalEnd", "NormalIdle", "NormalKey", "ModeChange", "RawKey",
-    "WinClose", "WinCreate", "WinDisplay", "WinResize", "WinSetOption",
-};
-
 static Completions complete_hooks(const Context&, CompletionFlags,
                                   const String& prefix, ByteCount cursor_pos)
 {
-    return { 0_byte, cursor_pos, complete(prefix, cursor_pos, hooks) };
+    return { 0_byte, cursor_pos, complete(prefix, cursor_pos, enum_desc(Meta::Type<Hook>{}) | transform(&EnumDesc<Hook>::name)) };
 }
 
 const CommandDesc add_hook_cmd = {
@@ -860,7 +850,9 @@ const CommandDesc add_hook_cmd = {
                          context, flags, prefix, cursor_pos); }),
     [](const ParametersParser& parser, Context& context, const ShellContext&)
     {
-        if (not contains(hooks, parser[1]))
+        auto descs = enum_desc(Meta::Type<Hook>{});
+        auto it = find_if(descs, [&](const EnumDesc<Hook>& desc) { return desc.name == parser[1]; });
+        if (it == descs.end())
             throw runtime_error{format("no such hook: '{}'", parser[1])};
 
         Regex regex{parser[2], RegexCompileFlags::Optimize};
@@ -873,7 +865,7 @@ const CommandDesc add_hook_cmd = {
 
         const auto flags = (parser.get_switch("always") ? HookFlags::Always : HookFlags::None) |
                            (parser.get_switch("once")   ? HookFlags::Once   : HookFlags::None);
-        get_scope(parser[0], context).hooks().add_hook(parser[1], group.str(), flags,
+        get_scope(parser[0], context).hooks().add_hook(it->value, group.str(), flags,
                                                        std::move(regex), command);
     }
 };

src/constexpr_utils.hh

@@ -18,6 +18,10 @@ struct Array
     constexpr const T* begin() const { return m_data; }
     constexpr const T* end() const { return m_data+N; }
 
+    constexpr T& operator[](int i) { return m_data[i]; }
+    constexpr T* begin() { return m_data; }
+    constexpr T* end() { return m_data+N; }
+
     constexpr operator ArrayView<T>() { return {m_data, N}; }
     constexpr operator ConstArrayView<T>() const { return {m_data, N}; }
 

src/hook_manager.cc

@@ -14,7 +14,7 @@
 namespace Kakoune
 {
 
-struct HookManager::Hook
+struct HookManager::HookData
 {
     String group;
     HookFlags flags;
@@ -26,23 +26,23 @@ HookManager::HookManager() : m_parent(nullptr) {}
 HookManager::HookManager(HookManager& parent) : SafeCountable{}, m_parent(&parent) {}
 HookManager::~HookManager() = default;
 
-void HookManager::add_hook(StringView hook_name, String group, HookFlags flags, Regex filter, String commands)
+void HookManager::add_hook(Hook hook, String group, HookFlags flags, Regex filter, String commands)
 {
-    auto& hooks = m_hooks[hook_name];
+    auto& hooks = m_hooks[to_underlying(hook)];
-    hooks.emplace_back(new Hook{std::move(group), flags, std::move(filter), std::move(commands)});
+    hooks.emplace_back(new HookData{std::move(group), flags, std::move(filter), std::move(commands)});
 }
 
 void HookManager::remove_hooks(const Regex& regex)
 {
     for (auto& list : m_hooks)
     {
-        auto it = std::remove_if(list.value.begin(), list.value.end(),
+        auto it = std::remove_if(list.begin(), list.end(),
-                                 [&](const std::unique_ptr<Hook>& h)
+                                 [&](const std::unique_ptr<HookData>& h)
                                  { return regex_match(h->group.begin(), h->group.end(), regex); });
         if (not m_running_hooks.empty()) // we are running some hooks, defer deletion
             m_hooks_trash.insert(m_hooks_trash.end(), std::make_move_iterator(it),
-                                 std::make_move_iterator(list.value.end()));
+                                 std::make_move_iterator(list.end()));
-        list.value.erase(it, list.value.end());
+        list.erase(it, list.end());
     }
 }
 
@@ -51,7 +51,7 @@ CandidateList HookManager::complete_hook_group(StringView prefix, ByteCount pos_
     CandidateList res;
     for (auto& list : m_hooks)
     {
-        auto container = list.value | transform([](const std::unique_ptr<Hook>& h) -> const String& { return h->group; });
+        auto container = list | transform([](const std::unique_ptr<HookData>& h) -> const String& { return h->group; });
         for (auto& c : complete(prefix, pos_in_token, container))
         {
             if (!contains(res, c))
@@ -61,25 +61,23 @@ CandidateList HookManager::complete_hook_group(StringView prefix, ByteCount pos_
     return res;
 }
 
-void HookManager::run_hook(StringView hook_name, StringView param, Context& context)
+void HookManager::run_hook(Hook hook, StringView param, Context& context)
 {
     const bool only_always = context.hooks_disabled();
 
     if (m_parent)
-        m_parent->run_hook(hook_name, param, context);
+        m_parent->run_hook(hook, param, context);
 
-    auto hook_list = m_hooks.find(hook_name);
+    auto& hook_list = m_hooks[to_underlying(hook)];
-    if (hook_list == m_hooks.end())
+    auto hook_name = enum_desc(Meta::Type<Hook>{})[to_underlying(hook)].name;
-        return;
+    if (contains(m_running_hooks, std::make_pair(hook, param)))
-
-    if (contains(m_running_hooks, std::make_pair(hook_name, param)))
     {
         auto error = format("recursive call of hook {}/{}, not executing", hook_name, param);
         write_to_debug_buffer(error);
         return;
     }
 
-    m_running_hooks.emplace_back(hook_name, param);
+    m_running_hooks.emplace_back(hook, param);
     auto pop_running_hook = on_scope_end([this]{
         m_running_hooks.pop_back();
         if (m_running_hooks.empty())
@@ -92,9 +90,9 @@ void HookManager::run_hook(StringView hook_name, StringView param, Context& cont
 
     auto& disabled_hooks = context.options()["disabled_hooks"].get<Regex>();
 
-    struct ToRun { Hook* hook; MatchResults<const char*> captures; };
+    struct ToRun { HookData* hook; MatchResults<const char*> captures; };
     Vector<ToRun> hooks_to_run; // The m_hooks_trash vector ensure hooks wont die during this method
-    for (auto& hook : hook_list->value)
+    for (auto& hook : hook_list)
     {
         MatchResults<const char*> captures;
         if ((not only_always or (hook->flags & HookFlags::Always)) and
@@ -124,11 +122,11 @@ void HookManager::run_hook(StringView hook_name, StringView param, Context& cont
 
             if (to_run.hook->flags & HookFlags::Once)
             {
-                auto it = find(hook_list->value, to_run.hook);
+                auto it = find(hook_list, to_run.hook);
-                if (it != hook_list->value.end())
+                if (it != hook_list.end())
                 {
                     m_hooks_trash.push_back(std::move(*it));
-                    hook_list->value.erase(it);
+                    hook_list.erase(it);
                 }
             }
         }

src/hook_manager.hh

@@ -4,6 +4,8 @@
 #include "hash_map.hh"
 #include "completion.hh"
 #include "safe_ptr.hh"
+#include "meta.hh"
+#include "enum.hh"
 
 namespace Kakoune
 {
@@ -11,6 +13,94 @@ namespace Kakoune
 class Context;
 class Regex;
 
+enum class Hook
+{
+    BufCreate,
+    BufNewFile,
+    BufOpenFile,
+    BufClose,
+    BufWritePost,
+    BufReload,
+    BufWritePre,
+    BufOpenFifo,
+    BufCloseFifo,
+    BufReadFifo,
+    BufSetOption,
+    InsertBegin,
+    InsertChar,
+    InsertDelete,
+    InsertEnd,
+    InsertIdle,
+    InsertKey,
+    InsertMove,
+    InsertCompletionHide,
+    InsertCompletionShow,
+    InsertCompletionSelect,
+    KakBegin,
+    KakEnd,
+    FocusIn,
+    FocusOut,
+    GlobalSetOption,
+    RuntimeError,
+    PromptIdle,
+    NormalBegin,
+    NormalEnd,
+    NormalIdle,
+    NormalKey,
+    ModeChange,
+    RawKey,
+    WinClose,
+    WinCreate,
+    WinDisplay,
+    WinResize,
+    WinSetOption
+};
+
+constexpr auto enum_desc(Meta::Type<Hook>)
+{
+    return make_array<EnumDesc<Hook>, 39>({
+        {Hook::BufCreate, "BufCreate"},
+        {Hook::BufNewFile, "BufNewFile"},
+        {Hook::BufOpenFile, "BufOpenFile"},
+        {Hook::BufClose, "BufClose"},
+        {Hook::BufWritePost, "BufWritePost"},
+        {Hook::BufReload, "BufReload"},
+        {Hook::BufWritePre, "BufWritePre"},
+        {Hook::BufOpenFifo, "BufOpenFifo"},
+        {Hook::BufCloseFifo, "BufCloseFifo"},
+        {Hook::BufReadFifo, "BufReadFifo"},
+        {Hook::BufSetOption, "BufSetOption"},
+        {Hook::InsertBegin, "InsertBegin"},
+        {Hook::InsertChar, "InsertChar"},
+        {Hook::InsertDelete, "InsertDelete"},
+        {Hook::InsertEnd, "InsertEnd"},
+        {Hook::InsertIdle, "InsertIdle"},
+        {Hook::InsertKey, "InsertKey"},
+        {Hook::InsertMove, "InsertMove"},
+        {Hook::InsertCompletionHide, "InsertCompletionHide"},
+        {Hook::InsertCompletionShow, "InsertCompletionShow"},
+        {Hook::InsertCompletionSelect, "InsertCompletionSelect"},
+        {Hook::KakBegin, "KakBegin"},
+        {Hook::KakEnd, "KakEnd"},
+        {Hook::FocusIn, "FocusIn"},
+        {Hook::FocusOut, "FocusOut"},
+        {Hook::GlobalSetOption, "GlobalSetOption"},
+        {Hook::RuntimeError, "RuntimeError"},
+        {Hook::PromptIdle, "PromptIdle"},
+        {Hook::NormalBegin, "NormalBegin"},
+        {Hook::NormalEnd, "NormalEnd"},
+        {Hook::NormalIdle, "NormalIdle"},
+        {Hook::NormalKey, "NormalKey"},
+        {Hook::ModeChange, "ModeChange"},
+        {Hook::RawKey, "RawKey"},
+        {Hook::WinClose, "WinClose"},
+        {Hook::WinCreate, "WinCreate"},
+        {Hook::WinDisplay, "WinDisplay"},
+        {Hook::WinResize, "WinResize"},
+        {Hook::WinSetOption, "WinSetOption"},
+    });
+}
+
 enum class HookFlags
 {
     None = 0,
@@ -25,25 +115,24 @@ public:
     HookManager(HookManager& parent);
     ~HookManager();
 
-    void add_hook(StringView hook_name, String group, HookFlags flags,
+    void add_hook(Hook hook, String group, HookFlags flags,
                   Regex filter, String commands);
     void remove_hooks(const Regex& regex);
     CandidateList complete_hook_group(StringView prefix, ByteCount pos_in_token);
-    void run_hook(StringView hook_name, StringView param,
+    void run_hook(Hook hook, StringView param, Context& context);
-                  Context& context);
 
 private:
     HookManager();
     // the only one allowed to construct a root hook manager
     friend class Scope;
 
-    struct Hook;
+    struct HookData;
 
     SafePtr<HookManager> m_parent;
-    HashMap<String, Vector<std::unique_ptr<Hook>, MemoryDomain::Hooks>, MemoryDomain::Hooks> m_hooks;
+    Array<Vector<std::unique_ptr<HookData>, MemoryDomain::Hooks>, enum_desc(Meta::Type<Hook>{}).size()> m_hooks;
 
-    mutable Vector<std::pair<StringView, StringView>, MemoryDomain::Hooks> m_running_hooks;
+    mutable Vector<std::pair<Hook, StringView>, MemoryDomain::Hooks> m_running_hooks;
-    mutable Vector<std::unique_ptr<Hook>, MemoryDomain::Hooks> m_hooks_trash;
+    mutable Vector<std::unique_ptr<HookData>, MemoryDomain::Hooks> m_hooks_trash;
 };
 
 }

src/input_handler.cc

@@ -166,7 +166,7 @@ public:
           m_idle_timer{TimePoint::max(),
                        context().flags() & Context::Flags::Draft ?
                            Timer::Callback{} : [this](Timer&) {
-              context().hooks().run_hook("NormalIdle", "", context());
+              context().hooks().run_hook(Hook::NormalIdle, "", context());
           }},
           m_fs_check_timer{TimePoint::max(),
                            context().flags() & Context::Flags::Draft ?
@@ -198,7 +198,7 @@ public:
             m_hooks_disabled = false;
         }
 
-        context().hooks().run_hook("NormalBegin", "", context());
+        context().hooks().run_hook(Hook::NormalBegin, "", context());
     }
 
     void on_disabled(bool temporary) override
@@ -212,7 +212,7 @@ public:
             m_hooks_disabled = false;
         }
 
-        context().hooks().run_hook("NormalEnd", "", context());
+        context().hooks().run_hook(Hook::NormalEnd, "", context());
     }
 
     void on_key(Key key) override
@@ -314,7 +314,7 @@ public:
             }
         }
 
-        context().hooks().run_hook("NormalKey", key_to_str(key), context());
+        context().hooks().run_hook(Hook::NormalKey, key_to_str(key), context());
         if (enabled() and not transient) // The hook might have changed mode
             m_idle_timer.set_next_date(Clock::now() + get_idle_timeout(context()));
     }
@@ -753,7 +753,7 @@ public:
                                m_callback(m_line_editor.line(), PromptEvent::Change, context());
                                m_line_changed = false;
                            }
-                           context().hooks().run_hook("PromptIdle", "", context());
+                           context().hooks().run_hook(Hook::PromptIdle, "", context());
                        }},
           m_line_editor{context().faces()}
     {
@@ -1128,7 +1128,7 @@ public:
           m_idle_timer{TimePoint::max(), context().flags() & Context::Flags::Draft ?
                        Timer::Callback{} : [this](Timer&) {
                            m_completer.update(m_auto_complete);
-                           context().hooks().run_hook("InsertIdle", "", context());
+                           context().hooks().run_hook(Hook::InsertIdle, "", context());
                        }}
     {
         context().buffer().throw_if_read_only();
@@ -1138,7 +1138,7 @@ public:
         last_insert().keys.clear();
         last_insert().disable_hooks = context().hooks_disabled();
         last_insert().count = count;
-        context().hooks().run_hook("InsertBegin", "", context());
+        context().hooks().run_hook(Hook::InsertBegin, "", context());
         prepare(mode, count);
     }
 
@@ -1185,7 +1185,7 @@ public:
             if (m_in_end)
                 throw runtime_error("asked to exit insert mode while running InsertEnd hook");
             m_in_end = true;
-            context().hooks().run_hook("InsertEnd", "", context());
+            context().hooks().run_hook(Hook::InsertEnd, "", context());
 
             m_completer.reset();
             pop_mode();
@@ -1209,7 +1209,7 @@ public:
                 SelectionList{buffer, std::move(sels)}.erase();
 
             if (not main_char.empty())
-                context().hooks().run_hook("InsertDelete", main_char, context());
+                context().hooks().run_hook(Hook::InsertDelete, main_char, context());
         }
         else if (key == Key::Delete)
         {
@@ -1328,7 +1328,7 @@ public:
                     if (auto cp = get_raw_codepoint(key))
                     {
                         insert(*cp);
-                        context().hooks().run_hook("InsertKey", key_to_str(key), context());
+                        context().hooks().run_hook(Hook::InsertKey, key_to_str(key), context());
                         if (enabled() and not transient)
                             m_idle_timer.set_next_date(Clock::now() + get_idle_timeout(context()));
                     }
@@ -1341,9 +1341,9 @@ public:
             return;
         }
 
-        context().hooks().run_hook("InsertKey", key_to_str(key), context());
+        context().hooks().run_hook(Hook::InsertKey, key_to_str(key), context());
         if (moved)
-            context().hooks().run_hook("InsertMove", key_to_str(key), context());
+            context().hooks().run_hook(Hook::InsertMove, key_to_str(key), context());
 
         if (update_completions and enabled() and not transient) // Hooks might have disabled us
             m_idle_timer.set_next_date(Clock::now() + get_idle_timeout(context()));
@@ -1386,7 +1386,7 @@ private:
     {
         String str{key};
         context().selections().insert(str, InsertMode::InsertCursor);
-        context().hooks().run_hook("InsertChar", str, context());
+        context().hooks().run_hook(Hook::InsertChar, str, context());
     }
 
     void prepare(InsertMode mode, int count)
@@ -1430,7 +1430,7 @@ private:
             }
             selections.set(std::move(new_sels),
                            selections.main_index() * count + count - 1);
-            context().hooks().run_hook("InsertChar", "\n", context());
+            context().hooks().run_hook(Hook::InsertChar, "\n", context());
             break;
         }
         case InsertMode::OpenLineAbove:
@@ -1448,7 +1448,7 @@ private:
             }
             selections.set(std::move(new_sels),
                            selections.main_index() * count + count - 1);
-            context().hooks().run_hook("InsertChar", "\n", context());
+            context().hooks().run_hook(Hook::InsertChar, "\n", context());
             break;
         }
         case InsertMode::InsertAtLineBegin:
@@ -1503,7 +1503,7 @@ void InputHandler::push_mode(InputMode* new_mode)
     m_mode_stack.emplace_back(new_mode);
     new_mode->on_enabled();
 
-    context().hooks().run_hook("ModeChange", format("{}:{}", prev_name, new_mode->name()), context());
+    context().hooks().run_hook(Hook::ModeChange, format("{}:{}", prev_name, new_mode->name()), context());
 }
 
 void InputHandler::pop_mode(InputMode* mode)
@@ -1517,7 +1517,7 @@ void InputHandler::pop_mode(InputMode* mode)
     m_mode_stack.pop_back();
     current_mode().on_enabled();
 
-    context().hooks().run_hook("ModeChange", format("{}:{}", prev_name, current_mode().name()), context());
+    context().hooks().run_hook(Hook::ModeChange, format("{}:{}", prev_name, current_mode().name()), context());
 }
 
 void InputHandler::reset_normal_mode()
@@ -1531,7 +1531,7 @@ void InputHandler::reset_normal_mode()
     m_mode_stack.resize(1);
     current_mode().on_enabled();
 
-    context().hooks().run_hook("ModeChange", format("{}:{}", prev_name, current_mode().name()), context());
+    context().hooks().run_hook(Hook::ModeChange, format("{}:{}", prev_name, current_mode().name()), context());
 }
 
 void InputHandler::insert(InsertMode mode, int count)

src/insert_completer.cc

@@ -455,7 +455,7 @@ void InsertCompleter::select(int index, bool relative, Vector<Key>& keystrokes)
     {
         const auto param = (m_current_candidate == m_completions.candidates.size() - 1) ?
             StringView{} : candidate.completion;
-        m_context.hooks().run_hook("InsertCompletionSelect", param, m_context);
+        m_context.hooks().run_hook(Hook::InsertCompletionSelect, param, m_context);
     }
 }
 
@@ -479,7 +479,7 @@ void InsertCompleter::reset()
         {
             m_context.client().menu_hide();
             m_context.client().info_hide();
-            m_context.hooks().run_hook("InsertCompletionHide", "", m_context);
+            m_context.hooks().run_hook(Hook::InsertCompletionHide, "", m_context);
         }
     }
 }
@@ -536,7 +536,7 @@ void InsertCompleter::menu_show()
     m_context.client().menu_show(std::move(menu_entries), m_completions.begin,
                                  MenuStyle::Inline);
     m_context.client().menu_select(m_current_candidate);
-    m_context.hooks().run_hook("InsertCompletionShow", "", m_context);
+    m_context.hooks().run_hook(Hook::InsertCompletionShow, "", m_context);
 }
 
 void InsertCompleter::on_option_changed(const Option& opt)

src/main.cc

@@ -674,7 +674,7 @@ int run_server(StringView session, StringView server_init,
 
     {
         Context empty_context{Context::EmptyContextFlag{}};
-        global_scope.hooks().run_hook("KakBegin", session, empty_context);
+        global_scope.hooks().run_hook(Hook::KakBegin, session, empty_context);
     }
 
     if (not files.empty()) try
@@ -776,7 +776,7 @@ int run_server(StringView session, StringView server_init,
 
     {
         Context empty_context{Context::EmptyContextFlag{}};
-        global_scope.hooks().run_hook("KakEnd", "", empty_context);
+        global_scope.hooks().run_hook(Hook::KakEnd, "", empty_context);
     }
 
     return local_client_exit;

src/scope.cc

@@ -18,7 +18,7 @@ GlobalScope::~GlobalScope()
 void GlobalScope::on_option_changed(const Option& option)
 {
     Context empty_context{Context::EmptyContextFlag{}};
-    hooks().run_hook("GlobalSetOption",
+    hooks().run_hook(Hook::GlobalSetOption,
                      format("{}={}", option.name(), option.get_as_string(Quoting::Kakoune)),
                      empty_context);
 }

src/window.cc

@@ -25,7 +25,7 @@ Window::Window(Buffer& buffer)
       m_buffer(&buffer),
       m_builtin_highlighters{highlighters()}
 {
-    run_hook_in_own_context("WinCreate", buffer.name());
+    run_hook_in_own_context(Hook::WinCreate, buffer.name());
 
     options().register_watcher(*this);
 
@@ -40,7 +40,7 @@ Window::Window(Buffer& buffer)
 
 Window::~Window()
 {
-    run_hook_in_own_context("WinClose", buffer().name());
+    run_hook_in_own_context(Hook::WinClose, buffer().name());
     options().unregister_watcher(*this);
 }
 
@@ -195,7 +195,7 @@ void Window::set_dimensions(DisplayCoord dimensions)
     if (m_dimensions != dimensions)
     {
         m_dimensions = dimensions;
-        run_hook_in_own_context("WinResize", format("{}.{}", dimensions.line,
+        run_hook_in_own_context(Hook::WinResize, format("{}.{}", dimensions.line,
                                                     dimensions.column));
     }
 }
@@ -339,15 +339,14 @@ void Window::clear_display_buffer()
 
 void Window::on_option_changed(const Option& option)
 {
-    run_hook_in_own_context("WinSetOption", format("{}={}", option.name(),
+    run_hook_in_own_context(Hook::WinSetOption, format("{}={}", option.name(),
                                                    option.get_as_string(Quoting::Kakoune)));
     // an highlighter might depend on the option, so we need to redraw
     force_redraw();
 }
 
 
-void Window::run_hook_in_own_context(StringView hook_name, StringView param,
+void Window::run_hook_in_own_context(Hook hook, StringView param, String client_name)
-                                     String client_name)
 {
     if (m_buffer->flags() & Buffer::Flags::NoHooks)
         return;
@@ -359,6 +358,6 @@ void Window::run_hook_in_own_context(StringView hook_name, StringView param,
     if (m_client)
         hook_handler.context().set_client(*m_client);
 
-    hooks().run_hook(hook_name, param, hook_handler.context());
+    hooks().run_hook(hook, param, hook_handler.context());
 }
 }

src/window.hh

@@ -12,6 +12,8 @@
 namespace Kakoune
 {
 
+enum class Hook;
+
 // A Window is a view onto a Buffer
 class Window final : public SafeCountable, public Scope, private OptionManagerWatcher
 {
@@ -52,7 +54,7 @@ private:
     void on_option_changed(const Option& option) override;
     DisplaySetup compute_display_setup(const Context& context) const;
 
-    void run_hook_in_own_context(StringView hook_name, StringView param,
+    void run_hook_in_own_context(Hook hook, StringView param,
                                  String client_name = "");
 
     SafePtr<Buffer> m_buffer;