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

#ifndef AST_H
#define AST_H

#include "../lists/lists.h"

enum ast_type
{
    AST_END,
    AST_IF,
    AST_CMD
};

struct ast_cmd
{
    struct list *cmd;
};

struct ast_if
{
    struct ast *condition;
    struct ast *then_clause;
    struct ast *else_clause;
};

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_H */