#include "ast.h"

#include <stdbool.h>

void ast_free(struct ast **node)
{
    if (*node == NULL)
        return;
    // ast void does not need to be freed.
    if (ast_is_if(*node))
        ast_free_if(ast_get_if(*node));
    else if (ast_is_command(*node))
        ast_free_command(ast_get_command(*node));
    else if (ast_is_list(*node))
        ast_free_list(ast_get_list(*node));
    else if (ast_is_and_or(*node))
        ast_free_and_or(ast_get_and_or(*node));
    else if (ast_is_redir(*node))
        ast_free_redir(ast_get_redir(*node));

    free(*node);
    *node = NULL;
}

struct ast *ast_create(enum ast_type type, void *data)
{
    struct ast *node = malloc(sizeof(struct ast));
    if (node == NULL)
        return NULL;

    node->type = type;
    node->data = data;

    return node;
}