1 files changed, 58 insertions, 0 deletions
diff --git a/src/include/utils/jsonfuncs.h b/src/include/utils/jsonfuncs.h
new file mode 100644
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--- /dev/null
+++ b/src/include/utils/jsonfuncs.h
@@ -0,0 +1,58 @@
+/*-------------------------------------------------------------------------
+ *
+ * jsonfuncs.h
+ *	  Functions to process JSON data types.
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/utils/jsonfuncs.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef JSONFUNCS_H
+#define JSONFUNCS_H
+
+#include "common/jsonapi.h"
+#include "utils/jsonb.h"
+
+/*
+ * Flag types for iterate_json(b)_values to specify what elements from a
+ * json(b) document we want to iterate.
+ */
+typedef enum JsonToIndex
+{
+	jtiKey = 0x01,
+	jtiString = 0x02,
+	jtiNumeric = 0x04,
+	jtiBool = 0x08,
+	jtiAll = jtiKey | jtiString | jtiNumeric | jtiBool
+} JsonToIndex;
+
+/* an action that will be applied to each value in iterate_json(b)_values functions */
+typedef void (*JsonIterateStringValuesAction) (void *state, char *elem_value, int elem_len);
+
+/* an action that will be applied to each value in transform_json(b)_values functions */
+typedef text *(*JsonTransformStringValuesAction) (void *state, char *elem_value, int elem_len);
+
+/* build a JsonLexContext from a text datum */
+extern JsonLexContext *makeJsonLexContext(text *json, bool need_escapes);
+
+/* try to parse json, and ereport(ERROR) on failure */
+extern void pg_parse_json_or_ereport(JsonLexContext *lex, JsonSemAction *sem);
+
+/* report an error during json lexing or parsing */
+extern void json_ereport_error(JsonParseErrorType error, JsonLexContext *lex);
+
+extern uint32 parse_jsonb_index_flags(Jsonb *jb);
+extern void iterate_jsonb_values(Jsonb *jb, uint32 flags, void *state,
+								 JsonIterateStringValuesAction action);
+extern void iterate_json_values(text *json, uint32 flags, void *action_state,
+								JsonIterateStringValuesAction action);
+extern Jsonb *transform_jsonb_string_values(Jsonb *jsonb, void *action_state,
+											JsonTransformStringValuesAction transform_action);
+extern text *transform_json_string_values(text *json, void *action_state,
+										  JsonTransformStringValuesAction transform_action);
+
+#endif