/*
 * Copyright (c) 2026, Mirocom Laboratories
 * Provided under the BSD-3 clause
 *
 * Abstract:
 *      This file provides abstract syntax tree related
 *      definitions.
 * Author:
 *      Ian M. Moffett <ian@mirocom.org>
 */

#ifndef BACKEND_AST_H
#define BACKEND_AST_H 1

#include <stdint.h>
#include <stddef.h>
#include "common/state.h"

/*
 * Represents an abstract syntax tree
 *
 * @AST_TYPE_NONE:  This node has node associated type
 */
typedef enum {
    AST_TYPE_NONE,
    AST_TYPE_CC,
} ast_type_t;

/*
 * Represents an element within the source
 *
 * @left:  Left node
 * @right: Right node
 */
struct ast_node {
    struct ast_node *left;
    struct ast_node *right;
    union {
        const char *s;
        void *data;
    };
};

/*
 * Allocate an AST node of a specific type
 *
 * @state: Quip state machine
 * @type: AST node type
 * @res:  AST node result is written here
 *
 * Returns zero on success
 *
 */
int ast_node_alloc(struct quip_state *state, ast_type_t type, struct ast_node **res);

#endif  /* !BACKEND_AST_H */