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db_include/fe_utils/simple_list.h

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+/*-------------------------------------------------------------------------
+ *
+ * Simple list facilities for frontend code
+ *
+ * Data structures for simple lists of OIDs, strings, and pointers.  The
+ * support for these is very primitive compared to the backend's List
+ * facilities, but it's all we need in, eg, pg_dump.
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/fe_utils/simple_list.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef SIMPLE_LIST_H
+#define SIMPLE_LIST_H
+
+typedef struct SimpleOidListCell
+{
+	struct SimpleOidListCell *next;
+	Oid			val;
+} SimpleOidListCell;
+
+typedef struct SimpleOidList
+{
+	SimpleOidListCell *head;
+	SimpleOidListCell *tail;
+} SimpleOidList;
+
+typedef struct SimpleStringListCell
+{
+	struct SimpleStringListCell *next;
+	bool		touched;		/* true, when this string was searched and
+								 * touched */
+	char		val[FLEXIBLE_ARRAY_MEMBER]; /* null-terminated string here */
+} SimpleStringListCell;
+
+typedef struct SimpleStringList
+{
+	SimpleStringListCell *head;
+	SimpleStringListCell *tail;
+} SimpleStringList;
+
+typedef struct SimplePtrListCell
+{
+	struct SimplePtrListCell *next;
+	void	   *ptr;
+} SimplePtrListCell;
+
+typedef struct SimplePtrList
+{
+	SimplePtrListCell *head;
+	SimplePtrListCell *tail;
+} SimplePtrList;
+
+extern void simple_oid_list_append(SimpleOidList *list, Oid val);
+extern bool simple_oid_list_member(SimpleOidList *list, Oid val);
+extern void simple_oid_list_destroy(SimpleOidList *list);
+
+extern void simple_string_list_append(SimpleStringList *list, const char *val);
+extern bool simple_string_list_member(SimpleStringList *list, const char *val);
+extern void simple_string_list_destroy(SimpleStringList *list);
+
+extern const char *simple_string_list_not_touched(SimpleStringList *list);
+
+extern void simple_ptr_list_append(SimplePtrList *list, void *val);
+
+#endif							/* SIMPLE_LIST_H */