42sh/src/utils/ast/ast_base.h

#ifndef AST_BASE_H
#define AST_BASE_H

#include <stdlib.h>

enum ast_type
{
    AST_END,
    AST_LIST,
    AST_IF,
    AST_CMD
};

struct ast
{
    enum ast_type type;

    /**
     * Data associated with this AST node. It can be one of the following:
     * - NULL (AST_END)
     * - struct ast_if* (AST_IF)
     * - struct ast_cmd* (AST_CMD)
     */
    void *data;
};

#endif /* ! AST_BASE_H */