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+/* grecs - Gray's Extensible Configuration System
+ Copyright (C) 2007-2019 Sergey Poznyakoff
+
+ Grecs is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 3 of the License, or (at your
+ option) any later version.
+
+ Grecs is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with Grecs. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <errno.h>
+#include <grecs.h>
+
+int
+grecs_assert_value_type(const grecs_value_t *value, int type,
+ grecs_locus_t *refloc)
+{
+ if (GRECS_VALUE_EMPTY_P(value)) {
+ grecs_error(refloc, 0, _("expected %s"),
+ gettext(grecs_value_type_string(type)));
+ return 1;
+ }
+ if (value->type != type) {
+ grecs_error(&value->locus, 0, _("expected %s, but found %s"),
+ gettext(grecs_value_type_string(type)),
+ gettext(grecs_value_type_string(value->type)));
+ return 1;
+ }
+ return 0;
+}
+
+int
+grecs_assert_scalar_stmt(grecs_locus_t *locus, enum grecs_callback_command cmd)
+{
+ if (cmd != grecs_callback_set_value) {
+ grecs_error(locus, 0, _("unexpected block statement"));
+ return 1;
+ }
+ return 0;
+}
+
+int
+grecs_assert_node_value_type(enum grecs_callback_command cmd,
+ grecs_node_t *node, int type)
+{
+ return grecs_assert_scalar_stmt(&node->locus, cmd)
+ && grecs_assert_value_type(node->v.value, type,
+ &node->locus);
+}

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