First prototype of coroutine based UI

src/backup/todo.txt

@@ -5,13 +5,14 @@ Use session 1:
 - OpenCommand in command window freezes the app
 - SDL popups are not working on linux ...
     - CloseAll idea: should create a buffer interface with list of buffers, user would be able to select which buffers to save and which not, then button UICloseAll
-- Creating files more efficiently
+- Creating files more efficiently, renaming
     - Dialog popup on save? Or ctrl-shift-s?
     - Maybe rename in bar and do :Rename
 
 New UI Session
 - Cleanup String16/String with Open and EvalCommands after lua refactor
-- Rename GotoBackward and others to Jump
+- Uneditable buffers ?
+- Maybe marked allocations??? So that we can associate allocations with a buffer or view and then dealloc all at the same time
 
 - Open with seek string (open at pattern) filename:32 filename:/^Window$/
 - build console window

src/basic/basic_head.h

@@ -94,7 +94,7 @@ EM_JS(void, JS_Breakpoint, (), {
         BREAK(); \
     }
 #define InvalidCodepath() Assert(!"invalid codepath")
-#define ElseInvalidCodepath() else {InvalidCodepath()}
+#define ElseInvalidCodepath() else {InvalidCodepath();}
 
 #define KiB(x) ((x##ull) * 1024ull)
 #define MiB(x) (KiB(x) * 1024ull)

src/render/opengl.cpp

@@ -186,6 +186,7 @@ void BeginFrameRender(float wx, float wy) {
 
 // ---------- EndFrameRender for ES3 ----------
 void EndFrameRender(float wx, float wy, Color color) {
+    ProfileFunction();
     glEnable(GL_BLEND);
     glEnable(GL_SCISSOR_TEST);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

src/test/tests.cpp

@@ -152,5 +152,6 @@ void Test(mco_coro *co) {
 void InitTests() {
     ConfigWaitForEvents = false;
     TestDir = Format(TestArena, "%S/test_env", GetExeDir(TestArena));
-    CoAdd(Test);
+    CoData *data = CoAdd(Test);
+    data->dont_wait_until_resolved = true;
 }

src/text_editor/buffer.cpp

@@ -1506,9 +1506,9 @@ String16 ToUnixString16(Allocator allocator, String string_) {
 Buffer *BufferOpenFile(String path) {
     ProfileFunction();
     Allocator sys_allocator = GetSystemAllocator();
-    Scratch   scratch;
+    Scratch scratch;
 
-    path           = GetAbsolutePath(scratch, path);
+    path = GetAbsolutePath(scratch, path);
     Buffer *buffer = GetBuffer(path);
     if (!IsNull(buffer) || (IsNull(buffer) && buffer->name == path)) {
         return buffer;
@@ -1519,10 +1519,11 @@ Buffer *BufferOpenFile(String path) {
     } else if (IsDir(path)) {
         buffer = CreateBuffer(sys_allocator, path);
         buffer->is_dir = true;
+        buffer->garbage = true;
     } else {
-        String string         = ReadFile(scratch, path);
-        buffer                = CreateBuffer(sys_allocator, path, string.len * 4 + 4096);
-        buffer->len           = ConvertUTF8ToUTF16UnixLine(string, buffer->str, buffer->cap);
+        String string = ReadFile(scratch, path);
+        buffer = CreateBuffer(sys_allocator, path, string.len * 4 + 4096);
+        buffer->len = ConvertUTF8ToUTF16UnixLine(string, buffer->str, buffer->cap);
         buffer->file_mod_time = GetFileModTime(path);
         UpdateLines(buffer, {}, String16{(char16_t *)buffer->data, buffer->len});
     }

src/text_editor/commands.cpp

@@ -730,7 +730,8 @@ void Coro_OpenCode(mco_coro *co) {
 
 void OpenCode(String dir) {
     Coro_OpenCodeDir = dir;
-    CoAdd(Coro_OpenCode);
+    CoData *data = CoAdd(Coro_OpenCode);
+    data->dont_wait_until_resolved = true;
 }
 
 void Command_OpenCode() {
@@ -747,7 +748,7 @@ void Command_CloseWindow() {
 } RegisterCommand(Command_CloseWindow, "");
 
 SaveResult TrySavingBuffer(Buffer *buffer) {
-    if (buffer->special || buffer->is_dir || buffer->garbage) {
+    if (buffer->special || buffer->garbage) {
         return SAVE_NO;
     }
     if (buffer->dirty) {
@@ -781,15 +782,13 @@ SaveResult TrySavingAllBuffers() {
     return SAVE_YES;
 }
 
-void Command_Close() {
+void Coro_Close(mco_coro *co) {
     BSet main = GetBSet(LastActiveLayoutWindowID);
-    if (TrySavingBuffer(main.buffer) == SAVE_CANCEL) {
+    if (main.buffer->special || main.buffer->garbage) {
+        Close(main.view->id);
         return;
     }
 
-    main.window->active_view = FindInactiveView();
-    Close(main.view->id);
-
     bool ref = false;
     For (Views) {
         if (it->id == main.view->id) {
@@ -801,9 +800,56 @@ void Command_Close() {
         }
     }
 
-    if (!ref) {
-        Close(main.buffer->id);
+    if (ref) {
+        Close(main.view->id);
+        return;
     }
+
+    if (!main.buffer->dirty) {
+        Close(main.buffer->id);
+        return;
+    }
+
+    Buffer *buffer = main.buffer;
+    JumpGarbageBuffer(&main);
+    NextActiveWindowID = main.window->id;
+
+    RawAppendf(main.buffer, R"==(
+Do you want to save [%S] before closing?
+
+                :Yes    :No    :Cancel
+)==", buffer->name);
+    main.view->carets[0] = FindNext(main.buffer, u":Yes", MakeCaret(0));
+    main.view->carets[0].range.min = main.view->carets[0].range.max;
+    Add(&main.view->hooks, {"Yes", "enter", [](){BSet active = GetBSet(ActiveWindowID); active.view->hook_cmd = "Yes";}, ParseKeyCached("enter")});
+    Add(&main.view->hooks, {"No", "", [](){BSet active = GetBSet(ActiveWindowID); active.view->hook_cmd = "No";}, ParseKeyCached("")});
+    Add(&main.view->hooks, {"Cancel", "escape", [](){BSet active = GetBSet(ActiveWindowID); active.view->hook_cmd = "Cancel";}, ParseKeyCached("escape")});
+    for (;;) {
+        if (main.window->active_view != main.view->id || main.window->close) {
+            Close(main.buffer->id);
+            return;
+        }
+
+        if (main.view->hook_cmd != "") {
+            break;
+        }
+
+        CoYield(co);
+    }
+
+    Close(main.buffer->id);
+    if (main.view->hook_cmd == "Yes") {
+        SaveBuffer(buffer);
+        Close(buffer->id);
+    } else if (main.view->hook_cmd == "No") {
+        Close(buffer->id);
+    } else if (main.view->hook_cmd == "Cancel") {
+        return;
+    } ElseInvalidCodepath();
+}
+
+void Command_Close() {
+    CoAdd(Coro_Close);
 } RegisterCommand(Command_Close, "ctrl-w");
 
 void Command_Quit() {
@@ -829,63 +875,17 @@ void Command_CloseAll() {
     }
 } RegisterCommand(Command_CloseAll, "");
 
-void Command_ForceClose() {
-    BSet active = GetBSet(ActiveWindowID);
-    Close(active.buffer->id);
-    Close(active.view->id);
-}
-
-// @todo: make these uneditable?
-// @todo: maybe turn this into a coroutine???
-String BufferIDea = R"==(
-Do you want to save buffer? [C:/Programming/text_editor/build.sh]
-
-                    :Yes          :No
-)==";
-void Command_TestUIIdea() {
-    BSet main = GetBSet(LastActiveLayoutWindowID);
-    JumpGarbageBuffer(&main, "ui");
-    NextActiveWindowID = main.window->id;
-
-    Add(&main.view->hooks, {"Yes", "enter", [](){
-        BSet active = GetBSet(ActiveWindowID);
-        Caret a = FindNext(active.buffer, u"[", MakeCaret(0));
-        Caret b = FindNext(active.buffer, u"]", MakeCaret(0));
-        if (GetSize(a) == 0 || GetSize(b) == 0) {
-            ReportWarningf("Failed to save, '[' or ']' not found");
-            return;
-        }
-
-        Scratch scratch;
-        String16 string16 = GetString(active.buffer, {a.range.max, b.range.min});
-        String string = ToString(scratch, string16);
-        Buffer *buffer = GetBuffer(string, NULL);
-        if (buffer) {
-            SaveBuffer(buffer);
-        } else {
-            ReportWarningf("Failed to save, buffer not found: %S", string);
-        }
-
-        Close(active.buffer->id);
-        Close(active.view->id);
-    }, ParseKey(Perm, "enter", "Command_TestUIIdea_Yes")}); // @todo: fix memory leak
-    Add(&main.view->hooks, {"No", "escape", Command_ForceClose, ParseKeyCached("escape")});
-    RawAppend(main.buffer, BufferIDea);
-    main.view->carets[0] = FindNext(main.buffer, u":Yes", MakeCaret(0));
-    main.view->carets[0].range.min = main.view->carets[0].range.max;
-} RegisterCommand(Command_TestUIIdea, "");
-
-void Command_GotoBackward() {
+void Command_JumpBack() {
     BSet main = GetBSet(LastActiveLayoutWindowID);
     main.window->skip_checkpoint = true;
-    GotoBackward(main.window);
-} RegisterCommand(Command_GotoBackward, "alt-q | mousex1");
+    JumpBack(main.window);
+} RegisterCommand(Command_JumpBack, "alt-q | mousex1");
 
-void Command_GotoForward() {
+void Command_JumpForward() {
     BSet main = GetBSet(LastActiveLayoutWindowID);
     main.window->skip_checkpoint = true;
-    GotoForward(main.window);
-} RegisterCommand(Command_GotoForward, "alt-shift-q | mousex2");
+    JumpForward(main.window);
+} RegisterCommand(Command_JumpForward, "alt-shift-q | mousex2");
 
 void Command_OpenUpFolder() {
     BSet main = GetBSet(LastActiveLayoutWindowID);

src/text_editor/commands_clipboard.cpp

@@ -102,4 +102,4 @@ void Command_Cut() {
     SaveCaretHistoryBeforeBeginEdit(active.buffer, active.view->carets);
     ClipboardCopy(active.view);
     Replace(active.view, u"");
-} RegisterCommand(Command_Cut, "ctrl-x");
+} RegisterCommand(Command_Cut, "ctrl-x");

src/text_editor/config.cpp

@@ -164,6 +164,9 @@ struct CachedTrigger {
 Array<CachedTrigger> CachedTriggers;
 
 Trigger *ParseKeyCached(String key) {
+    if (key.len == 0) {
+        return NULL;
+    }
     For (CachedTriggers) {
         if (it.key == key) {
             return it.trigger;

src/text_editor/coroutines.cpp

@@ -11,7 +11,7 @@ void CoRemove(String name) {
 }
 
 #define CoAdd(x) CoAddEx(x, #x)
-mco_coro *CoAddEx(CoroutineProc *proc, String name) {
+CoData *CoAddEx(CoroutineProc *proc, String name) {
     CoRemove(name);
     mco_desc desc = mco_desc_init(proc, 0);
 
@@ -24,7 +24,7 @@ mco_coro *CoAddEx(CoroutineProc *proc, String name) {
 
     mco_resume(coro);
     Add(&ActiveCoroutines, {coro, name});
-    return coro;
+    return GetLast(ActiveCoroutines);
 }
 
 void CoUpdate(Event *event) {
@@ -46,6 +46,8 @@ void CoUpdate(Event *event) {
                     ReportWarningf("failed to resume coroutine %d", ok);
                     mco_destroy(it.co);
                     remove_item = true;
+                } else {
+                    it.dont_wait_until_resolved = true;
                 }
             }
         }
@@ -62,7 +64,7 @@ Event *CoYield(mco_coro *co) {
     Assert(ok == MCO_SUCCESS);
 
     Event *event = NULL;
-    ok           = mco_pop(co, &event, sizeof(Event *));
+    ok = mco_pop(co, &event, sizeof(Event *));
     Assert(ok == MCO_SUCCESS);
 
     return event;

src/text_editor/globals.cpp

@@ -87,7 +87,7 @@ Array<Variable> Variables;
 Array<Process> ActiveProcesses = {};
 Array<String> ProcessEnviroment = {};
 
-struct CoData { mco_coro *co; String name; };
+struct CoData { mco_coro *co; String name; bool dont_wait_until_resolved; };
 Array<CoData> ActiveCoroutines;
 
 
@@ -162,5 +162,5 @@ RegisterVariable(String, ConfigFont, "/home/krz/text_editor/package/CascadiaMono
 RegisterVariable(String, ConfigVCVarsall, "C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Auxiliary/Build/vcvars64.bat");
 RegisterVariable(Float, ConfigUndoMergeTimeWindow, 0.3);
 RegisterVariable(Float, ConfigJumpHistoryMergeTimeWindow, 0.3);
-RegisterVariable(Int, ConfigJumpHistorySize, 512);
+RegisterVariable(Int, ConfigJumpHistorySize, 4096);
 RegisterVariable(String, ConfigInternetBrowser, "firefox");

src/text_editor/text_editor.cpp

@@ -78,6 +78,7 @@ void SetMouseCursor(SDL_SystemCursor id) {
 #endif
 
 void SetMouseCursor(Event event) {
+    ProfileFunction();
     Scratch scratch;
     Array<Window *> order = GetWindowZOrder(scratch);
     Vec2I mouse = MouseVec2I();
@@ -448,7 +449,6 @@ void EvalCommand(String16 command) {
     EvalCommand(ToString(scratch, command));
 }
 
-
 void GarbageCollect() {
     if (RunGCThisFrame == false) {
         return;
@@ -475,7 +475,11 @@ void GarbageCollect() {
             InvalidCodepath();
         }
 
-        Buffer *buffer = GetBuffer(it->active_buffer);
+        Buffer *buffer = GetBuffer(it->active_buffer, NULL);
+        if (buffer == NULL || buffer->close) {
+            it->close = true;
+        }
+
         if (!it->close) {
             if (!buffer->garbage) {
                 continue;
@@ -487,7 +491,7 @@ void GarbageCollect() {
             }
         }
 
-        RawAppendf(GCInfoBuffer, "View %d %S\n", (int)it->id.id, buffer->name);
+        RawAppendf(GCInfoBuffer, "View %d %S\n", (int)it->id.id, buffer ? buffer->name : String{"NULL"});
         remove_item = true;
         Dealloc(it);
     }
@@ -527,6 +531,11 @@ void GarbageCollect() {
             Dealloc(&it->goto_redo);
             Dealloc(sys_allocator, it);
             remove_item = true;
+        } else {
+            View *view = FindView(it->active_view, NULL);
+            if (!view) {
+                JumpToLastValidView(it);
+            }
         }
    }
 }
@@ -673,8 +682,17 @@ void MainLoop() {
         Update(it);
     }
 
+
+    bool dont_wait_until_resolved = false;
+    For (ActiveCoroutines) {
+        if (it.dont_wait_until_resolved) {
+            dont_wait_until_resolved = true;
+            break;
+        }
+    }
+
     WaitForEvents = ConfigWaitForEvents;
-    if (IsDocumentSelectionValid() || IsScrollbarSelectionValid() || ActiveProcesses.len || ActiveCoroutines.len) {
+    if (IsDocumentSelectionValid() || IsScrollbarSelectionValid() || ActiveProcesses.len || dont_wait_until_resolved) {
         WaitForEvents = false;
     }
 
@@ -847,7 +865,8 @@ int main(int argc, char **argv)
     ReportConsolef("WorkDir = %S", WorkDir);
     if (Testing) InitTests();
 #if OS_WINDOWS
-    CoAdd(Windows_SetupVCVarsall);
+    CoData *co_data = CoAdd(Windows_SetupVCVarsall);
+    co_data->dont_wait_until_resolved = true;
 #endif
 #if OS_WASM
     emscripten_set_main_loop(MainLoop, 0, 1);

src/text_editor/view.h

@@ -15,6 +15,7 @@ struct View {
     Caret main_caret_on_begin_frame;
     bool  update_scroll;
 
+    String hook_cmd;
     Array<CommandData> hooks;
     String16 prev_search_line;
     struct {

src/text_editor/window.cpp

@@ -235,7 +235,7 @@ Int ScreenSpaceToBufferPosErrorOutOfBounds(Window *window, View *view, Buffer *b
     return result;
 }
 
-GotoCrumb GetCrumb(Array<GotoCrumb> *cr) {
+GotoCrumb PopCrumb(Array<GotoCrumb> *cr) {
     for (; cr->len;) {
         GotoCrumb c = Pop(cr);
         View *view = FindView(c.view_id, NULL);
@@ -246,13 +246,33 @@ GotoCrumb GetCrumb(Array<GotoCrumb> *cr) {
     return {};
 }
 
-void GotoBackward(Window *window) {
+View *GetLastValidView(Window *window) {
+    For (IterateInReverse(&window->goto_redo)) {
+        if (it.view_id == window->active_view) continue;
+        View *view = FindView(it.view_id, NULL);
+        if (view) return view;
+    }
+    For (IterateInReverse(&window->goto_history)) {
+        if (it.view_id == window->active_view) continue;
+        View *view = FindView(it.view_id, NULL);
+        if (view) return view;
+    }
+    return Views[0];
+}
+
+View *JumpToLastValidView(Window *window) {
+    View *view = GetLastValidView(window);
+    window->active_view = view->id;
+    return view;
+}
+
+void JumpBack(Window *window) {
     if (window->jump_history == false) return;
     if (window->goto_history.len <= 0) return;
     BSet set = GetBSet(window);
     Add(&window->goto_redo, {set.view->id, set.view->carets[0], GetTimeSeconds()});
 
-    GotoCrumb c = GetCrumb(&window->goto_history);
+    GotoCrumb c = PopCrumb(&window->goto_history);
     window->active_view = c.view_id;
     View *view = GetView(c.view_id);
     view->carets[0]  = c.caret;
@@ -261,18 +281,18 @@ void GotoBackward(Window *window) {
     if (window->goto_history.len) {
         GotoCrumb *next = GetLast(window->goto_history);
         if (c.view_id == next->view_id && c.time - next->time <= ConfigJumpHistoryMergeTimeWindow) {
-            GotoBackward(window);
+            JumpBack(window);
         }
     }
 }
 
-void GotoForward(Window *window) {
+void JumpForward(Window *window) {
     if (window->jump_history == false) return;
     if (window->goto_redo.len <= 0) return;
     BSet set = GetBSet(window);
     Add(&window->goto_history, {set.view->id, set.view->carets[0], GetTimeSeconds()});
 
-    GotoCrumb c = GetCrumb(&window->goto_redo);
+    GotoCrumb c = PopCrumb(&window->goto_redo);
     window->active_view = c.view_id;
     View *view = GetView(c.view_id);
     view->carets[0]  = c.caret;
@@ -281,7 +301,7 @@ void GotoForward(Window *window) {
     if (window->goto_redo.len) {
         GotoCrumb *next = GetLast(window->goto_redo);
         if (c.view_id == next->view_id && next->time - c.time <= ConfigJumpHistoryMergeTimeWindow) {
-            GotoForward(window);
+            JumpForward(window);
         }
     }
 }

src/text_editor/window_command.cpp

@@ -160,7 +160,7 @@ void Command_ShowBufferList() {
     NextActiveWindowID = command_bar.window->id;
     ResetBuffer(command_bar.buffer);
     For (Buffers) {
-        if (it->special || it->garbage || it->is_dir) {
+        if (it->special || it->garbage) {
             continue;
         }
         RawAppendf(command_bar.buffer, "\n%S", it->name);