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+/**
+ * @file in_internal.h
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief Internal structures and functions for libyang parsers
+ *
+ * Copyright (c) 2020 - 2023 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ */
+
+#ifndef LY_IN_INTERNAL_H_
+#define LY_IN_INTERNAL_H_
+
+#include "in.h"
+
+/**
+ * @brief Parser input structure specifying where the data are read.
+ */
+struct ly_in {
+ LY_IN_TYPE type; /**< type of the output to select the output method */
+ const char *current; /**< Current position in the input data */
+ const char *func_start; /**< Input data position when the last parser function was executed */
+ const char *start; /**< Input data start */
+ size_t length; /**< mmap() length (if used) */
+
+ union {
+ int fd; /**< file descriptor for LY_IN_FD type */
+ FILE *f; /**< file structure for LY_IN_FILE and LY_IN_FILEPATH types */
+
+ struct {
+ int fd; /**< file descriptor for LY_IN_FILEPATH */
+ char *filepath; /**< stored original filepath */
+ } fpath; /**< filepath structure for LY_IN_FILEPATH */
+ } method; /**< type-specific information about the output */
+ uint64_t line; /**< current line of the input */
+};
+
+/**
+ * @brief Increment line counter.
+ * @param[in] IN The input handler.
+ */
+#define LY_IN_NEW_LINE(IN) \
+ (IN)->line++
+
+#endif /* LY_IN_INTERNAL_H_ */