#ifndef PARSER_H
#define PARSER_H

#include <stdbool.h>

#include "../lexer/lexer.h"
#include "../utils/ast/ast.h"

enum parser_state
{
    PARSER_STATE_NOT_INITIALIZED = 0,
    PARSER_STATE_READY,
    PARSER_STATE_CLOSED
};

/* @brief Initializes the parser module
 * @warning parser needs to be closed after use with parser_close()
 *
 * @return Returns false on error and true on success
 */
bool parser_init(void);

/* @brief Closes the parser module after use
 */
void parser_close(void);

/* @brief Builds the AST representation of the next command to execute.
 *
 * @return Returns the AST representation of the next command to execute.
 *         If there is no command left to execute, retuns an AST_END node.
 *
 * @warning NOT IMPLEMENTED
 */
struct ast *get_ast(struct lexer_context *ctx);

/* @brief Builds the AST representation of the given command string.
 *
 * @return Returns the AST representation of the given command string.
 *         Returns an AST_END node if the given command is empty.
 *
 * @warning NOT IMPLEMENTED
 */
struct ast *get_ast_str(char *command);

#endif /* ! PARSER_H */