String interning

src/text_editor/lua_api.cpp

@@ -221,7 +221,7 @@ String GetStyleString(String name, String default_string) {
         defer { lua_pop(LuaState, 1); };
         if (lua_isstring(LuaState, -1)) {
             const char *string = lua_tostring(LuaState, -1);
-            result             = Copy(Perm, string);
+            result             = Intern(&GlobalInternTable, string);
         }
     }
     return result;

src/text_editor/management.cpp

@@ -214,10 +214,12 @@ Buffer *BufferOpenFile(String path) {
     }
 
     if (!FileExists(path)) {
-        path   = GetAbsolutePath(sys_allocator, path);
+        path   = GetAbsolutePath(scratch, path);
+        path   = Intern(&GlobalInternTable, path);
         buffer = CreateBuffer(sys_allocator, path);
     } else if (IsDir(path)) {
-        path                 = GetAbsolutePath(sys_allocator, path);
+        path                 = GetAbsolutePath(scratch, path);
+        path                 = Intern(&GlobalInternTable, path);
         buffer               = CreateBuffer(sys_allocator, path, 4096 * 2);
         buffer->is_directory = true;
 
@@ -225,7 +227,8 @@ Buffer *BufferOpenFile(String path) {
             IKnowWhatImDoing_Appendf(buffer, "%.*s  ", FmtString(it.filename));
         }
     } else {
-        path          = GetAbsolutePath(sys_allocator, path);
+        path          = GetAbsolutePath(scratch, path);
+        path          = Intern(&GlobalInternTable, path);
         String string = ReadFile(scratch, path);
         buffer        = CreateBuffer(sys_allocator, path, string.len * 4);
 

src/text_editor/text_editor.cpp

@@ -31,6 +31,7 @@ int         FullScreenPositionX, FullScreenPositionY;
 #include "buffer_fuzzy_search.cpp"
 #include "buffer_test_load.cpp"
 
+#include "intern_table.cpp"
 #include "management.cpp"
 #include "window.cpp"
 #include "process.cpp"
@@ -83,7 +84,7 @@ Event TranslateSDLEvent(SDL_Event *input_event) {
         event.kind                 = EVENT_TEXT_INPUT;
         SDL_TextInputEvent &b      = input_event->text;
         String              string = b.text;
-        event.text                 = Copy(Perm, string).data; // @leak: @todo: intern table
+        event.text                 = Intern(&GlobalInternTable, string).data;
     } break;
 
     case SDL_EVENT_MOUSE_BUTTON_DOWN: {
@@ -136,7 +137,7 @@ Event TranslateSDLEvent(SDL_Event *input_event) {
         event.kind            = EVENT_DROP_FILE;
         SDL_DropEvent &b      = input_event->drop;
         String         string = b.data;
-        event.text            = Copy(Perm, string).data; // @leak
+        event.text            = Intern(&GlobalInternTable, string).data;
     } break;
 
         // SDL_SetEventEnabled(SDL_EVENT_DROP_TEXT, true);
@@ -144,7 +145,7 @@ Event TranslateSDLEvent(SDL_Event *input_event) {
         //      SDL_DropEvent &b = input_event->drop;
         //      event.kind       = EVENT_DROP_TEXT;
         //      String string    = b.data;
-        //      event.text       = Copy(Perm, string).data; // @leak
+        // event.text            = Intern(&GlobalInternTable, string).data;
         //  } break;
 
     default: {

src/text_editor/title_bar.cpp

@@ -80,9 +80,7 @@ void ApplyTitleBarChangesToWindow(Window *window, View *view, Buffer *buffer) {
 
     String filepath = ToString(scratch, buffer_string);
     if (filepath != last_buffer->name && !BufferNameExists(filepath)) {
-        // @todo: maybe intern the filenames?
+        last_buffer->name = Intern(&GlobalInternTable, filepath);
-        // @leak
-        last_buffer->name = Copy(Perm, filepath);
     }
 
     Int buffer_pos = XYToPos(*last_buffer, {column, line});

src/text_editor/todo.txt

@@ -1,10 +1,6 @@
-- I guess it's pretty dangerous passing pointers everywhere?
+- Remove pointers and use ViewIDs (enable array debug while doing this)
-- text in events aren't we using invalid memory for text? We need an intern table?
-
-- if exec is prepended with '!' symbol then run a shell command
 - try using git grep for search for now, combine with fuzzy search buffer
-- Test stdin writing code
+- need to rewrite the path matching in lua
-- Implement shell interaction (last line should have a '$'' symbols, if you press enter it should send that line to stdin of a running shell)
 
 - search as a command to execute which is going to be in the title bar
 - search backwards
@@ -44,6 +40,8 @@ BUG: there is a click hang when switching windows sometimes, you click after sel
 
 
 backlog
+- Test stdin writing code
+- Implement shell interaction (last line should have a '$'' symbols, if you press enter it should send that line to stdin of a running shell)
 - drop text into window
 - page up and down should also scroll and leave you in exactly same scroll
 - I think the way sublime text and we display line highlights is confusing with multiple cursors (line highlight can be confused with selection)

src/text_editor/window.cpp

@@ -113,7 +113,9 @@ bool ToggleVisibility(WindowID window_id) {
 }
 
 String BuffCWD(String string) {
-    String result = Format(Perm, "%.*s/%.*s", FmtString(WorkingDir), FmtString(string));
+    Scratch scratch;
+    String  result = Format(scratch, "%.*s/%.*s", FmtString(WorkingDir), FmtString(string));
+    result         = Intern(&GlobalInternTable, result);
     return result;
 }