Proper path implementation with array support

src_features/signMessageEIP712/path.h

@@ -1,12 +1,31 @@
 #ifndef PATH_H_
 #define PATH_H_
 
+#include <stdint.h>
 #include <stdbool.h>
 
 #define MAX_PATH_DEPTH  16
+#define MAX_ARRAY_DEPTH 4
 
-extern uint8_t  *path_indexes;
+typedef struct __attribute__((packed))
+{
+    uint8_t path_index;
+    uint8_t size;
+}   s_array_depth;
 
-bool    init_path(void);
+typedef struct __attribute__((packed))
+{
+    const void *root_struct;
+    uint8_t depth_count;
+    uint8_t depths[MAX_PATH_DEPTH];
+    uint8_t array_depth_count;
+    s_array_depth array_depths[MAX_ARRAY_DEPTH];
+}   s_path;
+
+bool    path_set_root(const char *const struct_name, uint8_t length);
+const void  *path_get_field(void);
+bool    path_advance(void);
+bool    path_init(void);
+bool    path_new_array_depth(uint8_t size);
 
 #endif // PATH_H_