Rename stack_right_position -> stack_total_tree_size

I want to re-use the stack data structure for storing the
re-usable nodes from the previous parse tree during an edit.
In this case, the stack won't conceptually start at position
zero, so the name 'right_position' doesn't make sense.

src/runtime/parser.c

@@ -33,7 +33,7 @@ static TSLength breakdown_stack(TSParser *parser, TSInputEdit *edit) {
   }
 
   TSStack *stack = &parser->stack;
-  TSLength position = ts_stack_right_position(stack);
+  TSLength position = ts_stack_total_tree_size(stack);
 
   for (;;) {
     TSTree *node = ts_stack_top_node(stack);
@@ -71,7 +71,7 @@ static TSLength breakdown_stack(TSParser *parser, TSInputEdit *edit) {
 static void resize_error(TSParser *parser, TSTree *error) {
   error->size =
       ts_length_sub(ts_length_sub(parser->lexer.token_start_position,
-                                  ts_stack_right_position(&parser->stack)),
+                                  ts_stack_total_tree_size(&parser->stack)),
                     error->padding);
 }
 

src/runtime/stack.c

@@ -47,7 +47,7 @@ void ts_stack_shrink(TSStack *stack, size_t new_size) {
   stack->size = new_size;
 }
 
-TSLength ts_stack_right_position(const TSStack *stack) {
+TSLength ts_stack_total_tree_size(const TSStack *stack) {
   TSLength result = ts_length_zero();
   for (size_t i = 0; i < stack->size; i++) {
     TSTree *node = stack->entries[i].node;

src/runtime/stack.h

@@ -24,7 +24,7 @@ void ts_stack_shrink(TSStack *stack, size_t new_size);
 void ts_stack_push(TSStack *stack, TSStateId state, TSTree *node);
 TSStateId ts_stack_top_state(const TSStack *stack);
 TSTree *ts_stack_top_node(const TSStack *stack);
-TSLength ts_stack_right_position(const TSStack *stack);
+TSLength ts_stack_total_tree_size(const TSStack *stack);
 
 #define TS_STACK_FROM_TOP(stack, entry)                          \
   for (TSStackEntry *entry = (stack).entries + (stack).size - 1; \