Swap Boost.Container's small_vector out for LLVM's

This implementation misses a shrink to fit function, but reassigning the
vector with a fresh one should be equivalent.

src/wine-host/bridges/vst2.h

@@ -245,7 +245,7 @@ class Vst2Bridge : public HostBridge {
      * practice every host will bundle all events in a single
      * `effProcessEvents()` call.
      */
-    boost::container::small_vector<DynamicVstEvents, 1>
+    llvm::SmallVector<DynamicVstEvents, 1>
         next_audio_buffer_midi_events_;
     /**
      * Whether `next_audio_buffer_midi_events` should be cleared before

src/wine-host/editor.cpp

@@ -19,7 +19,7 @@
 #include <iostream>
 #include <sstream>
 
-#include <boost/container/small_vector.hpp>
+#include <llvm/small-vector.h>
 
 using namespace std::literals::chrono_literals;
 using namespace std::literals::string_literals;
@@ -132,7 +132,7 @@ static const HCURSOR arrow_cursor = LoadCursor(nullptr, IDC_ARROW);
  * @return A non-empty list containing `starting_at` and all of its ancestor
  *   windows `starting_at`.
  */
-boost::container::small_vector<xcb_window_t, 8> find_ancestor_windows(
+llvm::SmallVector<xcb_window_t, 8> find_ancestor_windows(
     xcb_connection_t& x11_connection,
     xcb_window_t starting_at);
 
@@ -1238,7 +1238,7 @@ LRESULT CALLBACK window_proc(HWND handle,
     return DefWindowProc(handle, message, wParam, lParam);
 }
 
-boost::container::small_vector<xcb_window_t, 8> find_ancestor_windows(
+llvm::SmallVector<xcb_window_t, 8> find_ancestor_windows(
     xcb_connection_t& x11_connection,
     xcb_window_t starting_at) {
     xcb_window_t current_window = starting_at;
@@ -1250,8 +1250,7 @@ boost::container::small_vector<xcb_window_t, 8> find_ancestor_windows(
     THROW_X11_ERROR(error);
 
     const xcb_window_t root = query_reply->root;
-    boost::container::small_vector<xcb_window_t, 8> ancestor_windows{
-        current_window};
+    llvm::SmallVector<xcb_window_t, 8> ancestor_windows{current_window};
     while (query_reply->parent != root) {
         current_window = query_reply->parent;
         ancestor_windows.push_back(current_window);

src/wine-host/meson.build

@@ -66,6 +66,7 @@ host_common_sources = files(
   '../common/plugins.cpp',
   '../common/process.cpp',
   '../common/utils.cpp',
+  '../include/llvm/small-vector.cpp',
   'bridges/common.cpp',
   'bridges/vst2.cpp',
   'editor.cpp',

src/wine-host/xdnd-proxy.cpp

@@ -192,9 +192,9 @@ WineXdndProxy::Handle WineXdndProxy::get_handle() {
     return Handle(instance);
 }
 
-void WineXdndProxy::begin_xdnd(const boost::container::small_vector_base<
-                                   ghc::filesystem::path>& file_paths,
-                               HWND tracker_window) {
+void WineXdndProxy::begin_xdnd(
+    const llvm::SmallVectorImpl<ghc::filesystem::path>& file_paths,
+    HWND tracker_window) {
     if (file_paths.empty()) {
         throw std::runtime_error("Cannot drag-and-drop without any files");
     }
@@ -815,7 +815,7 @@ void CALLBACK dnd_winevent_callback(HWINEVENTHOOK /*hWinEventHook*/,
     }
 
     // This will contain the normal, Unix-style paths to the files
-    boost::container::small_vector<fs::path, 4> dragged_files;
+    llvm::SmallVector<fs::path, 4> dragged_files;
     for (unsigned int format_idx = 0; format_idx < num_formats; format_idx++) {
         STGMEDIUM storage{};
         if (HRESULT result = tracker_info->dataObject->GetData(

src/wine-host/xdnd-proxy.h

@@ -26,8 +26,8 @@
 #include <xcb/xcb.h>
 #pragma pop_macro("_WIN32")
 
+#include <llvm/small-vector.h>
 #include <windows.h>
-#include <boost/container/small_vector.hpp>
 #include <ghc/filesystem.hpp>
 
 #include "utils.h"
@@ -149,9 +149,9 @@ class WineXdndProxy {
      * Initiate the XDDN protocol by taking ownership of the `XdndSelection`
      * selection and setting up the event listeners.
      */
-    void begin_xdnd(const boost::container::small_vector_base<
-                        ghc::filesystem::path>& file_paths,
-                    HWND tracker_window);
+    void begin_xdnd(
+        const llvm::SmallVectorImpl<ghc::filesystem::path>& file_paths,
+        HWND tracker_window);
 
     /**
      * Release ownership of the selection stop listening for X11 events.