src/lib/trace-ir/field-path.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2016-2018 Philippe Proulx <pproulx@efficios.com>
   5  *
   6  * The Common Trace Format (CTF) Specification is available at
   7  * http://www.efficios.com/ctf
   8  */
   9
  10 #ifndef BABELTRACE_TRACE_IR_FIELD_PATH_INTERNAL
  11 #define BABELTRACE_TRACE_IR_FIELD_PATH_INTERNAL
  12
  13 #include "lib/object.h"
  14 #include <babeltrace2/trace-ir/field-path.h>
  15 #include "common/assert.h"
  16 #include "common/macros.h"
  17 #include <glib.h>
  18
  19 struct bt_field_path_item {
  20         enum bt_field_path_item_type type;
  21         uint64_t index;
  22 };
  23
  24 struct bt_field_path {
  25         struct bt_object base;
  26         enum bt_field_path_scope root;
  27
  28         /* Array of `struct bt_field_path_item` (items) */
  29         GArray *items;
  30 };
  31
  32 struct bt_field_path *bt_field_path_create(void);
  33
  34 static inline
  35 struct bt_field_path_item *bt_field_path_borrow_item_by_index_inline(
  36                 const struct bt_field_path *field_path, uint64_t index)
  37 {
  38         BT_ASSERT_DBG(field_path);
  39         BT_ASSERT_DBG(index < field_path->items->len);
  40         return &bt_g_array_index(field_path->items, struct bt_field_path_item,
  41                 index);
  42 }
  43
  44 static inline
  45 void bt_field_path_append_item(struct bt_field_path *field_path,
  46                 struct bt_field_path_item *item)
  47 {
  48         BT_ASSERT(field_path);
  49         BT_ASSERT(item);
  50         g_array_append_val(field_path->items, *item);
  51 }
  52
  53 static inline
  54 void bt_field_path_remove_last_item(struct bt_field_path *field_path)
  55 {
  56         BT_ASSERT(field_path);
  57         BT_ASSERT(field_path->items->len > 0);
  58         g_array_set_size(field_path->items, field_path->items->len - 1);
  59 }
  60
  61 static inline
  62 const char *bt_field_path_item_type_string(enum bt_field_path_item_type type)
  63 {
  64         switch (type) {
  65         case BT_FIELD_PATH_ITEM_TYPE_INDEX:
  66                 return "INDEX";
  67         case BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT:
  68                 return "CURRENT_ARRAY_ELEMENT";
  69         default:
  70                 return "(unknown)";
  71         }
  72 };
  73
  74 #endif /* BABELTRACE_TRACE_IR_FIELD_PATH_INTERNAL */