API: Implement tabpage_{get,set}_var

src/api/helpers.c

@@ -290,6 +290,17 @@ win_T * find_window(Window window, Error *err)
   return NULL;
 }
 
+tabpage_T * find_tab(Tabpage tabpage, Error *err)
+{
+  tabpage_T *rv = find_tabpage(tabpage);
+
+  if (!rv) {
+    set_api_error("Invalid tabpage id", err);
+  }
+
+  return rv;
+}
+
 static bool object_to_vim(Object obj, typval_T *tv, Error *err)
 {
   tv->v_type = VAR_UNKNOWN;

src/api/helpers.h

@@ -80,5 +80,12 @@ buf_T *find_buffer(Buffer buffer, Error *err);
 /// @return the window pointer
 win_T * find_window(Window window, Error *err);
 
+/// Finds the pointer for a tabpage number
+///
+/// @param tabpage the tabpage number
+/// @param[out] err Details of an error that may have occurred
+/// @return the tabpage pointer
+tabpage_T * find_tab(Tabpage tabpage, Error *err);
+
 #endif  // NEOVIM_API_HELPERS_H
 

src/api/tabpage.c

@@ -4,20 +4,36 @@
 
 #include "api/tabpage.h"
 #include "api/defs.h"
+#include "api/helpers.h"
 
 int64_t tabpage_get_window_count(Tabpage tabpage, Error *err)
 {
-  abort();
+  set_api_error("Not implemented", err);
+  return 0;
 }
 
 Object tabpage_get_var(Tabpage tabpage, String name, Error *err)
 {
-  abort();
+  Object rv;
+  tabpage_T *tab = find_tab(tabpage, err);
+
+  if (!tab) {
+    return rv;
+  }
+
+  return dict_get_value(tab->tp_vars, name, false, err);
 }
 
-void tabpage_set_var(Tabpage tabpage, String name, Object value, Error *err)
+Object tabpage_set_var(Tabpage tabpage, String name, Object value, Error *err)
 {
-  abort();
+  Object rv;
+  tabpage_T *tab = find_tab(tabpage, err);
+
+  if (!tab) {
+    return rv;
+  }
+
+  return dict_set_value(tab->tp_vars, name, value, err);
 }
 
 Window tabpage_get_buffer(Tabpage tabpage, Error *err)

src/api/tabpage.h

@@ -23,11 +23,12 @@ Object tabpage_get_var(Tabpage tabpage, String name, Error *err);
 
 /// Sets a tabpage variable
 ///
-/// @param tabpage andle
+/// @param tabpage handle
 /// @param name The variable name
 /// @param value The variable value
 /// @param[out] err Details of an error that may have occurred
-void tabpage_set_var(Tabpage tabpage, String name, Object value, Error *err);
+/// @return The tab page handle
+Object tabpage_set_var(Tabpage tabpage, String name, Object value, Error *err);
 
 /// Gets the current window in a tab page
 ///