types REFACTOR move integer-specific functions into a standalone source file

Split the plugins_types.c file to distinct internal implementation of
plugins types API and the (base) type plugins themselves.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3f8d53c..f1a1fad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -134,6 +134,7 @@
     src/printer_yin.c
     src/printer_tree.c
     src/plugins_types.c
+    src/plugins_types_integer.c
     src/plugins_exts.c
     src/plugins_exts_metadata.c
     src/plugins_exts_nacm.c
diff --git a/src/plugins_types.c b/src/plugins_types.c
index 1666996..9f807de 100644
--- a/src/plugins_types.c
+++ b/src/plugins_types.c
@@ -664,129 +664,6 @@
 }
 
 /**
- * @brief Validate, canonize and store value of the YANG built-in signed integer types.
- *
- * Implementation of the ly_type_store_clb.
- */
-static LY_ERR
-ly_type_store_int(const struct ly_ctx *ctx, const struct lysc_type *type, const char *value, size_t value_len,
-        uint32_t options, LY_PREFIX_FORMAT UNUSED(format), void *UNUSED(prefix_data), uint32_t hints,
-        const struct lysc_node *UNUSED(ctx_node), struct lyd_value *storage, struct lys_glob_unres *UNUSED(unres),
-        struct ly_err_item **err)
-{
-    LY_ERR ret = LY_SUCCESS;
-    int64_t num;
-    int base = 1;
-    char *str;
-    struct lysc_type_num *type_num = (struct lysc_type_num *)type;
-
-    /* check hints */
-    ret = ly_type_check_hints(hints, value, value_len, type->basetype, &base, err);
-    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
-
-    switch (type->basetype) {
-    case LY_TYPE_INT8:
-        ret = ly_type_parse_int("int8", base, INT64_C(-128), INT64_C(127), value, value_len, &num, err);
-        break;
-    case LY_TYPE_INT16:
-        ret = ly_type_parse_int("int16", base, INT64_C(-32768), INT64_C(32767), value, value_len, &num, err);
-        break;
-    case LY_TYPE_INT32:
-        ret = ly_type_parse_int("int32", base, INT64_C(-2147483648), INT64_C(2147483647), value, value_len, &num, err);
-        break;
-    case LY_TYPE_INT64:
-        ret = ly_type_parse_int("int64", base, INT64_C(-9223372036854775807) - INT64_C(1),
-                INT64_C(9223372036854775807), value, value_len, &num, err);
-        break;
-    default:
-        LOGINT(ctx);
-        ret = LY_EINT;
-    }
-
-    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
-    LY_CHECK_ERR_GOTO(asprintf(&str, "%" PRId64, num) == -1, ret = LY_EMEM, cleanup);
-
-    /* range of the number */
-    if (type_num->range) {
-        ret = ly_type_validate_range(type->basetype, type_num->range, num, str, err);
-        LY_CHECK_ERR_GOTO(ret != LY_SUCCESS, free(str), cleanup);
-    }
-
-    /* store everything */
-    ret = lydict_insert_zc(ctx, str, &storage->canonical);
-    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
-    storage->int64 = num;
-    storage->realtype = type;
-
-cleanup:
-    if (options & LY_TYPE_STORE_DYNAMIC) {
-        free((char *)value);
-    }
-    return ret;
-}
-
-/**
- * @brief Validate and canonize value of the YANG built-in unsigned integer types.
- *
- * Implementation of the ly_type_store_clb.
- */
-static LY_ERR
-ly_type_store_uint(const struct ly_ctx *ctx, const struct lysc_type *type, const char *value, size_t value_len,
-        uint32_t options, LY_PREFIX_FORMAT UNUSED(format), void *UNUSED(prefix_data), uint32_t hints,
-        const struct lysc_node *UNUSED(ctx_node), struct lyd_value *storage, struct lys_glob_unres *UNUSED(unres),
-        struct ly_err_item **err)
-{
-    LY_ERR ret = LY_SUCCESS;
-    uint64_t num;
-    int base = 0;
-    struct lysc_type_num *type_num = (struct lysc_type_num *)type;
-    char *str;
-
-    /* check hints */
-    ret = ly_type_check_hints(hints, value, value_len, type->basetype, &base, err);
-    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
-
-    switch (type->basetype) {
-    case LY_TYPE_UINT8:
-        ret = ly_type_parse_uint("uint8", base, UINT64_C(255), value, value_len, &num, err);
-        break;
-    case LY_TYPE_UINT16:
-        ret = ly_type_parse_uint("uint16", base, UINT64_C(65535), value, value_len, &num, err);
-        break;
-    case LY_TYPE_UINT32:
-        ret = ly_type_parse_uint("uint32", base, UINT64_C(4294967295), value, value_len, &num, err);
-        break;
-    case LY_TYPE_UINT64:
-        ret = ly_type_parse_uint("uint64", base, UINT64_C(18446744073709551615), value, value_len, &num, err);
-        break;
-    default:
-        LOGINT(ctx);
-        ret = LY_EINT;
-    }
-
-    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
-    LY_CHECK_ERR_GOTO(asprintf(&str, "%" PRIu64, num) == -1, ret = LY_EMEM, cleanup);
-
-    /* range of the number */
-    if (type_num->range) {
-        ret = ly_type_validate_range(type->basetype, type_num->range, num, str, err);
-        LY_CHECK_ERR_GOTO(ret != LY_SUCCESS, free(str), cleanup);
-    }
-
-    /* store everything */
-    ret = lydict_insert_zc(ctx, str, &storage->canonical);
-    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
-    storage->int64 = num;
-    storage->realtype = type;
-
-cleanup:
-    if (options & LY_TYPE_STORE_DYNAMIC) {
-        free((char *)value);
-    }
-    return ret;
-}
-
-/**
  * @brief Validate, canonize and store value of the YANG built-in decimal64 types.
  *
  * Implementation of the ly_type_store_clb.
@@ -2267,6 +2144,14 @@
     }
 }
 
+/* plugins_types_integer.c */
+extern LY_ERR ly_type_store_int(const struct ly_ctx *ctx, const struct lysc_type *type,
+        const char *value, size_t value_len, uint32_t options, LY_PREFIX_FORMAT format, void *prefix_data, uint32_t hints,
+        const struct lysc_node *ctx_node, struct lyd_value *storage, struct lys_glob_unres *unres, struct ly_err_item **err);
+extern LY_ERR ly_type_store_uint(const struct ly_ctx *ctx, const struct lysc_type *type,
+        const char *value, size_t value_len, uint32_t options, LY_PREFIX_FORMAT format, void *prefix_data, uint32_t hints,
+        const struct lysc_node *ctx_node, struct lyd_value *storage, struct lys_glob_unres *unres, struct ly_err_item **err);
+
 /**
  * @brief Set of type plugins for YANG built-in types
  */
diff --git a/src/plugins_types_integer.c b/src/plugins_types_integer.c
new file mode 100644
index 0000000..9dd6c9b
--- /dev/null
+++ b/src/plugins_types_integer.c
@@ -0,0 +1,151 @@
+/**
+ * @file plugins_types_integer.c
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @brief Built-in integer types plugin.
+ *
+ * Copyright (c) 2019-2021 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
+ */
+
+#define _GNU_SOURCE
+
+#include "plugins_types.h"
+
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "libyang.h"
+
+/* additional internal headers for some useful simple macros */
+#include "common.h"
+#include "compat.h"
+
+/**
+ * @brief Validate, canonize and store value of the YANG built-in signed integer types.
+ *
+ * Implementation of the ly_type_store_clb.
+ */
+LY_ERR
+ly_type_store_int(const struct ly_ctx *ctx, const struct lysc_type *type, const char *value, size_t value_len,
+        uint32_t options, LY_PREFIX_FORMAT UNUSED(format), void *UNUSED(prefix_data), uint32_t hints,
+        const struct lysc_node *UNUSED(ctx_node), struct lyd_value *storage, struct lys_glob_unres *UNUSED(unres),
+        struct ly_err_item **err)
+{
+    LY_ERR ret = LY_SUCCESS;
+    int64_t num;
+    int base = 1;
+    char *str;
+    struct lysc_type_num *type_num = (struct lysc_type_num *)type;
+
+    /* check hints */
+    ret = ly_type_check_hints(hints, value, value_len, type->basetype, &base, err);
+    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
+
+    switch (type->basetype) {
+    case LY_TYPE_INT8:
+        ret = ly_type_parse_int("int8", base, INT64_C(-128), INT64_C(127), value, value_len, &num, err);
+        break;
+    case LY_TYPE_INT16:
+        ret = ly_type_parse_int("int16", base, INT64_C(-32768), INT64_C(32767), value, value_len, &num, err);
+        break;
+    case LY_TYPE_INT32:
+        ret = ly_type_parse_int("int32", base, INT64_C(-2147483648), INT64_C(2147483647), value, value_len, &num, err);
+        break;
+    case LY_TYPE_INT64:
+        ret = ly_type_parse_int("int64", base, INT64_C(-9223372036854775807) - INT64_C(1),
+                INT64_C(9223372036854775807), value, value_len, &num, err);
+        break;
+    default:
+        LOGINT(ctx);
+        ret = LY_EINT;
+    }
+
+    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
+    LY_CHECK_ERR_GOTO(asprintf(&str, "%" PRId64, num) == -1, ret = LY_EMEM, cleanup);
+
+    /* range of the number */
+    if (type_num->range) {
+        ret = ly_type_validate_range(type->basetype, type_num->range, num, str, err);
+        LY_CHECK_ERR_GOTO(ret != LY_SUCCESS, free(str), cleanup);
+    }
+
+    /* store everything */
+    ret = lydict_insert_zc(ctx, str, &storage->canonical);
+    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
+    storage->int64 = num;
+    storage->realtype = type;
+
+cleanup:
+    if (options & LY_TYPE_STORE_DYNAMIC) {
+        free((char *)value);
+    }
+    return ret;
+}
+
+/**
+ * @brief Validate and canonize value of the YANG built-in unsigned integer types.
+ *
+ * Implementation of the ly_type_store_clb.
+ */
+LY_ERR
+ly_type_store_uint(const struct ly_ctx *ctx, const struct lysc_type *type, const char *value, size_t value_len,
+        uint32_t options, LY_PREFIX_FORMAT UNUSED(format), void *UNUSED(prefix_data), uint32_t hints,
+        const struct lysc_node *UNUSED(ctx_node), struct lyd_value *storage, struct lys_glob_unres *UNUSED(unres),
+        struct ly_err_item **err)
+{
+    LY_ERR ret = LY_SUCCESS;
+    uint64_t num;
+    int base = 0;
+    struct lysc_type_num *type_num = (struct lysc_type_num *)type;
+    char *str;
+
+    /* check hints */
+    ret = ly_type_check_hints(hints, value, value_len, type->basetype, &base, err);
+    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
+
+    switch (type->basetype) {
+    case LY_TYPE_UINT8:
+        ret = ly_type_parse_uint("uint8", base, UINT64_C(255), value, value_len, &num, err);
+        break;
+    case LY_TYPE_UINT16:
+        ret = ly_type_parse_uint("uint16", base, UINT64_C(65535), value, value_len, &num, err);
+        break;
+    case LY_TYPE_UINT32:
+        ret = ly_type_parse_uint("uint32", base, UINT64_C(4294967295), value, value_len, &num, err);
+        break;
+    case LY_TYPE_UINT64:
+        ret = ly_type_parse_uint("uint64", base, UINT64_C(18446744073709551615), value, value_len, &num, err);
+        break;
+    default:
+        LOGINT(ctx);
+        ret = LY_EINT;
+    }
+
+    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
+    LY_CHECK_ERR_GOTO(asprintf(&str, "%" PRIu64, num) == -1, ret = LY_EMEM, cleanup);
+
+    /* range of the number */
+    if (type_num->range) {
+        ret = ly_type_validate_range(type->basetype, type_num->range, num, str, err);
+        LY_CHECK_ERR_GOTO(ret != LY_SUCCESS, free(str), cleanup);
+    }
+
+    /* store everything */
+    ret = lydict_insert_zc(ctx, str, &storage->canonical);
+    LY_CHECK_GOTO(ret != LY_SUCCESS, cleanup);
+    storage->int64 = num;
+    storage->realtype = type;
+
+cleanup:
+    if (options & LY_TYPE_STORE_DYNAMIC) {
+        free((char *)value);
+    }
+    return ret;
+}