node.c

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#include "config.h"
#include <stddef.h>
#include "mutt/lib.h"
#include "node.h"

struct ExpandoNode *node_new(void)
{
  return MUTT_MEM_CALLOC(1, struct ExpandoNode);
}

void node_free(struct ExpandoNode **ptr)
{
  if (!ptr || !*ptr)
    return;
 
  struct ExpandoNode *node = *ptr;
 
  struct ExpandoNode **enp = NULL;
  ARRAY_FOREACH(enp, &node->children)
  {
    node_free(enp);
  }
  ARRAY_FREE(&node->children);
 
  if (node->ndata_free)
    node->ndata_free(&node->ndata);
 
  FREE(&node->format);
  FREE(&node->text);
 
  FREE(ptr);
}

void node_add_child(struct ExpandoNode *node, struct ExpandoNode *child)
{
  if (!node)
    return;
 
  ARRAY_ADD(&node->children, child);
}

struct ExpandoNode *node_get_child(const struct ExpandoNode *node, int index)
{
  if (!node)
    return NULL;
 
  struct ExpandoNode **ptr = ARRAY_GET(&node->children, index);
  if (!ptr)
    return NULL;
 
  return *ptr;
}

struct ExpandoNode *node_last(struct ExpandoNode *node)
{
  if (!node)
    return NULL;
 
  struct ExpandoNode **np = NULL;
  while ((np = ARRAY_LAST(&node->children)) && *np)
  {
    node = *np;
  }
 
  return node;
}