#include <assert.h>

#include "ast.h"

struct ast *ast_create_list(struct list *list)
{
    struct ast_list *ast_list = malloc(sizeof(struct ast_list));
    if (ast_list == NULL)
        return NULL;

    ast_list->children = list;

    return ast_create(AST_LIST, ast_list);
}

struct ast_list *ast_get_list(struct ast *node)
{
    assert(node != NULL);
    return (struct ast_list *)node->data;
}

bool ast_is_list(struct ast *node)
{
    return node->type == AST_LIST;
}

void ast_free_list(struct ast_list *ast_list)
{
    if (ast_list == NULL)
        return;

    ast_list_deep_destroy(ast_list->children);
    free(ast_list);
}

void ast_list_deep_destroy(struct list *l)
{
    struct list *elt = l;
    struct list *next_elt;
    while (elt != NULL)
    {
        next_elt = elt->next;

        struct ast *node = (struct ast *)elt->data;
        ast_free(&node);
        free(elt);
        elt = next_elt;
    }
}