eolian: contain master state in a larger structure

src/lib/eolian/Eolian.h

@@ -84,6 +84,12 @@ extern "C" {
 
 #ifdef EFL_BETA_API_SUPPORT
 
+/* State information
+ *
+ * @ingroup Eolian
+ */
+typedef struct _Eolian Eolian;
+
 /* Class type used to extract information on classes
  *
  * @ingroup Eolian
@@ -523,30 +529,31 @@ EAPI int eolian_init(void);
 EAPI int eolian_shutdown(void);
 
 /*
- * @brief Create a new primary unit for Eolian state.
+ * @brief Create a new Eolian state.
+ *
+ * This creates a new Eolian state that consists of a "master unit" with
+ * the same address (therefore, you can cast it to Eolian_Unit) plus extra
+ * state information.
  *
- * This creates a nameless "master unit" which holds all Eolian state.
  * You need to free this with eolian_free once you're done.
  *
- * @return A new master unit (or NULL on failure).
+ * @return A new state (or NULL on failure).
  *
  * @ingroup Eolian
  */
-EAPI Eolian_Unit *eolian_new(void);
+EAPI Eolian *eolian_new(void);
 
 /*
- * @brief Free a master unit.
+ * @brief Free an Eolian state.
  *
- * You can use this to free an Eolian state. Do not EVER use this to free
- * any unit other than master unit, as these are managed by the master unit
- * and freeing them would result in incorrect behavior.
+ * You can use this to free an Eolian state.
  *
  * If the input is NULL, this function has no effect.
  *
- * @param[in] unit the master unit to free
+ * @param[in] unit the state to free
  *
  */
-EAPI void eolian_free(Eolian_Unit *unit);
+EAPI void eolian_free(Eolian *state);
 
 /*
  * @brief Scan the given directory (recursively) and search for .eo and

src/lib/eolian/eolian_database.c

@@ -636,21 +636,25 @@ database_unit_del(Eolian_Unit *unit)
    eina_hash_free(unit->enums);
 }
 
-EAPI Eolian_Unit *
+EAPI Eolian *
 eolian_new(void)
 {
-   Eolian_Unit *nunit = calloc(1, sizeof(Eolian_Unit));
-   if (!nunit)
+   Eolian *state = calloc(1, sizeof(Eolian));
+   if (!state)
      return NULL;
 
-   database_unit_init(nunit, NULL);
-   return nunit;
+   database_unit_init(&state->unit, NULL);
+   return state;
 }
 
 EAPI void
-eolian_free(Eolian_Unit *unit)
+eolian_free(Eolian *state)
 {
-   database_unit_del(unit);
+   if (!state)
+     return;
+
+   database_unit_del(&state->unit);
+   free(state);
 }
 
 #define EO_SUFFIX ".eo"

src/lib/eolian/eolian_database.h

@@ -59,6 +59,23 @@ extern Eina_Hash *_parsingeos;
 /* for deferred dependency parsing */
 extern Eina_Hash *_defereos;
 
+struct _Eolian_Unit
+{
+   Eolian_Unit   *parent;
+   Eina_Hash     *children;
+   Eina_Hash     *classes;
+   Eina_Hash     *globals;
+   Eina_Hash     *constants;
+   Eina_Hash     *aliases;
+   Eina_Hash     *structs;
+   Eina_Hash     *enums;
+};
+
+struct _Eolian
+{
+   Eolian_Unit unit;
+};
+
 typedef struct _Eolian_Object
 {
    const char *file;
@@ -294,18 +311,6 @@ struct _Eolian_Variable
    Eina_Bool is_extern :1;
 };
 
-struct _Eolian_Unit
-{
-   Eolian_Unit   *parent;
-   Eina_Hash     *children;
-   Eina_Hash     *classes;
-   Eina_Hash     *globals;
-   Eina_Hash     *constants;
-   Eina_Hash     *aliases;
-   Eina_Hash     *structs;
-   Eina_Hash     *enums;
-};
-
 int database_init(void);
 int database_shutdown(void);