I propose the attached patch to clean up the comment formatting in
plpgsql.h.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
>From 1924c0d822b36af32556e49cd0a70da9ab5c87b2 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <pete...@gmx.net>
Date: Tue, 16 Aug 2016 12:00:00 -0400
Subject: [PATCH] Improve formatting of comments in plpgsql.h
This file had some unusual comment layout. Most of the comments
introducing structs ended up to the right of the screen and following
the start of the struct. Some comments for struct members ended up
after the member definition.
Fix that by moving comments consistently before what they are
describing. Also add missing struct tags where missing so that it is
easier to tell what the struct is.
---
src/pl/plpgsql/src/plpgsql.h | 417 ++++++++++++++++++++++++++-----------------
1 file changed, 255 insertions(+), 162 deletions(-)
diff --git a/src/pl/plpgsql/src/plpgsql.h b/src/pl/plpgsql/src/plpgsql.h
index 140bf4b..cd2e4ef 100644
--- a/src/pl/plpgsql/src/plpgsql.h
+++ b/src/pl/plpgsql/src/plpgsql.h
@@ -34,9 +34,8 @@
#undef _
#define _(x) dgettext(TEXTDOMAIN, x)
-/* ----------
+/*
* Compiler's namespace item types
- * ----------
*/
enum
{
@@ -46,9 +45,8 @@ enum
PLPGSQL_NSTYPE_REC
};
-/* ----------
+/*
* A PLPGSQL_NSTYPE_LABEL stack entry must be one of these types
- * ----------
*/
enum PLpgSQL_label_types
{
@@ -57,9 +55,8 @@ enum PLpgSQL_label_types
PLPGSQL_LABEL_OTHER /* anything else */
};
-/* ----------
+/*
* Datum array node types
- * ----------
*/
enum
{
@@ -71,9 +68,8 @@ enum
PLPGSQL_DTYPE_EXPR
};
-/* ----------
+/*
* Variants distinguished in PLpgSQL_type structs
- * ----------
*/
enum
{
@@ -83,9 +79,8 @@ enum
PLPGSQL_TTYPE_PSEUDO /* other pseudotypes */
};
-/* ----------
+/*
* Execution tree node types
- * ----------
*/
enum PLpgSQL_stmt_types
{
@@ -115,10 +110,8 @@ enum PLpgSQL_stmt_types
PLPGSQL_STMT_PERFORM
};
-
-/* ----------
+/*
* Execution node return codes
- * ----------
*/
enum
{
@@ -128,9 +121,8 @@ enum
PLPGSQL_RC_CONTINUE
};
-/* ----------
+/*
* GET DIAGNOSTICS information items
- * ----------
*/
enum
{
@@ -149,9 +141,8 @@ enum
PLPGSQL_GETDIAG_SCHEMA_NAME
};
-/* --------
+/*
* RAISE statement options
- * --------
*/
enum
{
@@ -166,9 +157,8 @@ enum
PLPGSQL_RAISEOPTION_SCHEMA
};
-/* --------
+/*
* Behavioral modes for plpgsql variable resolution
- * --------
*/
typedef enum
{
@@ -182,9 +172,11 @@ typedef enum
* Node and structure definitions
**********************************************************************/
-
-typedef struct
-{ /* Postgres data type */
+/*
+ * Postgres data type
+ */
+typedef struct PLpgSQL_type
+{
char *typname; /* (simple) name of the type */
Oid typoid; /* OID of the data type */
int ttype; /* PLPGSQL_TTYPE_ code */
@@ -197,31 +189,37 @@ typedef struct
int32 atttypmod; /* typmod (taken from someplace else) */
} PLpgSQL_type;
-
/*
+ * Generic datum array item
+ *
* PLpgSQL_datum is the common supertype for PLpgSQL_expr, PLpgSQL_var,
* PLpgSQL_row, PLpgSQL_rec, PLpgSQL_recfield, and PLpgSQL_arrayelem
*/
-typedef struct
-{ /* Generic datum array item */
+typedef struct PLpgSQL_datum
+{
int dtype;
int dno;
} PLpgSQL_datum;
/*
+ * Scalar or composite variable
+ *
* The variants PLpgSQL_var, PLpgSQL_row, and PLpgSQL_rec share these
* fields
*/
-typedef struct
-{ /* Scalar or composite variable */
+typedef struct PLpgSQL_variable
+{
int dtype;
int dno;
char *refname;
int lineno;
} PLpgSQL_variable;
+/*
+ * SQL Query to plan and execute
+ */
typedef struct PLpgSQL_expr
-{ /* SQL Query to plan and execute */
+{
int dtype;
int dno;
char *query;
@@ -252,9 +250,11 @@ typedef struct PLpgSQL_expr
LocalTransactionId expr_simple_lxid;
} PLpgSQL_expr;
-
-typedef struct
-{ /* Scalar variable */
+/*
+ * Scalar variable
+ */
+typedef struct PLpgSQL_var
+{
int dtype;
int dno;
char *refname;
@@ -273,19 +273,20 @@ typedef struct
bool freeval;
} PLpgSQL_var;
-
-typedef struct
-{ /* Row variable */
+/*
+ * Row variable
+ */
+typedef struct PLpgSQL_row
+{
int dtype;
int dno;
char *refname;
int lineno;
+ /* Note: TupleDesc is only set up for named rowtypes, else it is NULL. */
TupleDesc rowtupdesc;
/*
- * Note: TupleDesc is only set up for named rowtypes, else it is NULL.
- *
* Note: if the underlying rowtype contains a dropped column, the
* corresponding fieldnames[] entry will be NULL, and there is no
* corresponding var (varnos[] will be -1).
@@ -295,9 +296,11 @@ typedef struct
int *varnos;
} PLpgSQL_row;
-
-typedef struct
-{ /* Record variable (non-fixed structure) */
+/*
+ * Record variable (non-fixed structure)
+ */
+typedef struct PLpgSQL_rec
+{
int dtype;
int dno;
char *refname;
@@ -309,22 +312,27 @@ typedef struct
bool freetupdesc;
} PLpgSQL_rec;
-
-typedef struct
-{ /* Field in record */
+/*
+ * Field in record
+ */
+typedef struct PLpgSQL_recfield
+{
int dtype;
int dno;
char *fieldname;
int recparentno; /* dno of parent record */
} PLpgSQL_recfield;
-
-typedef struct
-{ /* Element of array variable */
+/*
+ * Element of array variable
+ */
+typedef struct PLpgSQL_arrayelem
+{
int dtype;
int dno;
PLpgSQL_expr *subscript;
int arrayparentno; /* dno of parent array variable */
+
/* Remaining fields are cached info about the array variable's type */
Oid parenttypoid; /* type of array variable; 0 if not yet set */
int32 parenttypmod; /* typmod of array variable */
@@ -337,49 +345,65 @@ typedef struct
char elemtypalign; /* typalign of element type */
} PLpgSQL_arrayelem;
-
+/*
+ * Item in the compilers namespace tree
+ */
typedef struct PLpgSQL_nsitem
-{ /* Item in the compilers namespace tree */
+{
int itemtype;
+ /*
+ * For labels, itemno is a value of enum PLpgSQL_label_types. For other
+ * itemtypes, itemno is the associated PLpgSQL_datum's dno.
+ */
int itemno;
- /* For labels, itemno is a value of enum PLpgSQL_label_types. */
- /* For other itemtypes, itemno is the associated PLpgSQL_datum's dno. */
struct PLpgSQL_nsitem *prev;
char name[FLEXIBLE_ARRAY_MEMBER]; /* nul-terminated string */
} PLpgSQL_nsitem;
-
-typedef struct
-{ /* Generic execution node */
+/*
+ * Generic execution node
+ */
+typedef struct PLpgSQL_stmt
+{
int cmd_type;
int lineno;
} PLpgSQL_stmt;
-
+/*
+ * One EXCEPTION condition name
+ */
typedef struct PLpgSQL_condition
-{ /* One EXCEPTION condition name */
+{
int sqlerrstate; /* SQLSTATE code */
char *condname; /* condition name (for debugging) */
struct PLpgSQL_condition *next;
} PLpgSQL_condition;
-typedef struct
+/*
+ * EXCEPTION block
+ */
+typedef struct PLpgSQL_exception_block
{
int sqlstate_varno;
int sqlerrm_varno;
List *exc_list; /* List of WHEN clauses */
} PLpgSQL_exception_block;
-typedef struct
-{ /* One EXCEPTION ... WHEN clause */
+/*
+ * One EXCEPTION ... WHEN clause
+ */
+typedef struct PLpgSQL_exception
+{
int lineno;
PLpgSQL_condition *conditions;
List *action; /* List of statements */
} PLpgSQL_exception;
-
-typedef struct
-{ /* Block of statements */
+/*
+ * Block of statements
+ */
+typedef struct PLpgSQL_stmt_block
+{
int cmd_type;
int lineno;
char *label;
@@ -389,39 +413,52 @@ typedef struct
PLpgSQL_exception_block *exceptions;
} PLpgSQL_stmt_block;
-
-typedef struct
-{ /* Assign statement */
+/*
+ * Assign statement
+ */
+typedef struct PLpgSQL_stmt_assign
+{
int cmd_type;
int lineno;
int varno;
PLpgSQL_expr *expr;
} PLpgSQL_stmt_assign;
-typedef struct
-{ /* PERFORM statement */
+/*
+ * PERFORM statement
+ */
+typedef struct PLpgSQL_stmt_perform
+{
int cmd_type;
int lineno;
PLpgSQL_expr *expr;
} PLpgSQL_stmt_perform;
-typedef struct
-{ /* Get Diagnostics item */
+/*
+ * GET DIAGNOSTICS item
+ */
+typedef struct PLpgSQL_diag_item
+{
int kind; /* id for diagnostic value desired */
int target; /* where to assign it */
} PLpgSQL_diag_item;
-typedef struct
-{ /* Get Diagnostics statement */
+/*
+ * GET DIAGNOSTICS statement
+ */
+typedef struct PLpgSQL_stmt_getdiag
+{
int cmd_type;
int lineno;
bool is_stacked; /* STACKED or CURRENT diagnostics area? */
List *diag_items; /* List of PLpgSQL_diag_item */
} PLpgSQL_stmt_getdiag;
-
-typedef struct
-{ /* IF statement */
+/*
+ * IF statement
+ */
+typedef struct PLpgSQL_stmt_if
+{
int cmd_type;
int lineno;
PLpgSQL_expr *cond; /* boolean expression for THEN */
@@ -430,15 +467,20 @@ typedef struct
List *else_body; /* List of statements */
} PLpgSQL_stmt_if;
-typedef struct /* one ELSIF arm of IF statement */
+/*
+ * one ELSIF arm of IF statement
+ */
+typedef struct PLpgSQL_if_elsif
{
int lineno;
PLpgSQL_expr *cond; /* boolean expression for this case */
List *stmts; /* List of statements */
} PLpgSQL_if_elsif;
-
-typedef struct /* CASE statement */
+/*
+ * CASE statement
+ */
+typedef struct PLpgSQL_stmt_case
{
int cmd_type;
int lineno;
@@ -449,25 +491,32 @@ typedef struct /* CASE statement */
List *else_stmts; /* List of statements */
} PLpgSQL_stmt_case;
-typedef struct /* one arm of CASE statement */
+/*
+ * one arm of CASE statement
+ */
+typedef struct PLpgSQL_case_when
{
int lineno;
PLpgSQL_expr *expr; /* boolean expression for this case */
List *stmts; /* List of statements */
} PLpgSQL_case_when;
-
-typedef struct
-{ /* Unconditional LOOP statement */
+/*
+ * Unconditional LOOP statement
+ */
+typedef struct PLpgSQL_stmt_loop
+{
int cmd_type;
int lineno;
char *label;
List *body; /* List of statements */
} PLpgSQL_stmt_loop;
-
-typedef struct
-{ /* WHILE cond LOOP statement */
+/*
+ * WHILE cond LOOP statement
+ */
+typedef struct PLpgSQL_stmt_while
+{
int cmd_type;
int lineno;
char *label;
@@ -475,9 +524,11 @@ typedef struct
List *body; /* List of statements */
} PLpgSQL_stmt_while;
-
-typedef struct
-{ /* FOR statement with integer loopvar */
+/*
+ * FOR statement with integer loopvar
+ */
+typedef struct PLpgSQL_stmt_fori
+{
int cmd_type;
int lineno;
char *label;
@@ -489,13 +540,12 @@ typedef struct
List *body; /* List of statements */
} PLpgSQL_stmt_fori;
-
/*
* PLpgSQL_stmt_forq represents a FOR statement running over a SQL query.
* It is the common supertype of PLpgSQL_stmt_fors, PLpgSQL_stmt_forc
* and PLpgSQL_dynfors.
*/
-typedef struct
+typedef struct PLpgSQL_stmt_forq
{
int cmd_type;
int lineno;
@@ -505,8 +555,11 @@ typedef struct
List *body; /* List of statements */
} PLpgSQL_stmt_forq;
-typedef struct
-{ /* FOR statement running over SELECT */
+/*
+ * FOR statement running over SELECT
+ */
+typedef struct PLpgSQL_stmt_fors
+{
int cmd_type;
int lineno;
char *label;
@@ -517,8 +570,11 @@ typedef struct
PLpgSQL_expr *query;
} PLpgSQL_stmt_fors;
-typedef struct
-{ /* FOR statement running over cursor */
+/*
+ * FOR statement running over cursor
+ */
+typedef struct PLpgSQL_stmt_forc
+{
int cmd_type;
int lineno;
char *label;
@@ -530,8 +586,11 @@ typedef struct
PLpgSQL_expr *argquery; /* cursor arguments if any */
} PLpgSQL_stmt_forc;
-typedef struct
-{ /* FOR statement running over EXECUTE */
+/*
+ * FOR statement running over EXECUTE
+ */
+typedef struct PLpgSQL_stmt_dynfors
+{
int cmd_type;
int lineno;
char *label;
@@ -543,9 +602,11 @@ typedef struct
List *params; /* USING expressions */
} PLpgSQL_stmt_dynfors;
-
-typedef struct
-{ /* FOREACH item in array loop */
+/*
+ * FOREACH item in array loop
+ */
+typedef struct PLpgSQL_stmt_foreach_a
+{
int cmd_type;
int lineno;
char *label;
@@ -555,9 +616,11 @@ typedef struct
List *body; /* List of statements */
} PLpgSQL_stmt_foreach_a;
-
-typedef struct
-{ /* OPEN a curvar */
+/*
+ * OPEN a curvar
+ */
+typedef struct PLpgSQL_stmt_open
+{
int cmd_type;
int lineno;
int curvar;
@@ -569,9 +632,11 @@ typedef struct
List *params; /* USING expressions */
} PLpgSQL_stmt_open;
-
-typedef struct
-{ /* FETCH or MOVE statement */
+/*
+ * FETCH or MOVE statement
+ */
+typedef struct PLpgSQL_stmt_fetch
+{
int cmd_type;
int lineno;
PLpgSQL_rec *rec; /* target, as record or row */
@@ -584,17 +649,21 @@ typedef struct
bool returns_multiple_rows; /* can return more than one row? */
} PLpgSQL_stmt_fetch;
-
-typedef struct
-{ /* CLOSE curvar */
+/*
+ * CLOSE curvar
+ */
+typedef struct PLpgSQL_stmt_close
+{
int cmd_type;
int lineno;
int curvar;
} PLpgSQL_stmt_close;
-
-typedef struct
-{ /* EXIT or CONTINUE statement */
+/*
+ * EXIT or CONTINUE statement
+ */
+typedef struct PLpgSQL_stmt_exit
+{
int cmd_type;
int lineno;
bool is_exit; /* Is this an exit or a continue? */
@@ -602,25 +671,33 @@ typedef struct
PLpgSQL_expr *cond;
} PLpgSQL_stmt_exit;
-
-typedef struct
-{ /* RETURN statement */
+/*
+ * RETURN statement
+ */
+typedef struct PLpgSQL_stmt_return
+{
int cmd_type;
int lineno;
PLpgSQL_expr *expr;
int retvarno;
} PLpgSQL_stmt_return;
-typedef struct
-{ /* RETURN NEXT statement */
+/*
+ * RETURN NEXT statement
+ */
+typedef struct PLpgSQL_stmt_return_next
+{
int cmd_type;
int lineno;
PLpgSQL_expr *expr;
int retvarno;
} PLpgSQL_stmt_return_next;
-typedef struct
-{ /* RETURN QUERY statement */
+/*
+ * RETURN QUERY statement
+ */
+typedef struct PLpgSQL_stmt_return_query
+{
int cmd_type;
int lineno;
PLpgSQL_expr *query; /* if static query */
@@ -628,8 +705,11 @@ typedef struct
List *params; /* USING arguments for dynamic query */
} PLpgSQL_stmt_return_query;
-typedef struct
-{ /* RAISE statement */
+/*
+ * RAISE statement
+ */
+typedef struct PLpgSQL_stmt_raise
+{
int cmd_type;
int lineno;
int elog_level;
@@ -639,36 +719,47 @@ typedef struct
List *options; /* list of PLpgSQL_raise_option */
} PLpgSQL_stmt_raise;
-typedef struct
-{ /* RAISE statement option */
+/*
+ * RAISE statement option
+ */
+typedef struct PLpgSQL_raise_option
+{
int opt_type;
PLpgSQL_expr *expr;
} PLpgSQL_raise_option;
-typedef struct
-{ /* ASSERT statement */
+/*
+ * ASSERT statement
+ */
+typedef struct PLpgSQL_stmt_assert
+{
int cmd_type;
int lineno;
PLpgSQL_expr *cond;
PLpgSQL_expr *message;
} PLpgSQL_stmt_assert;
-typedef struct
-{ /* Generic SQL statement to execute */
+/*
+ * Generic SQL statement to execute
+ */
+typedef struct PLpgSQL_stmt_execsql
+{
int cmd_type;
int lineno;
PLpgSQL_expr *sqlstmt;
- bool mod_stmt; /* is the stmt INSERT/UPDATE/DELETE? */
- /* note: mod_stmt is set when we plan the query */
+ bool mod_stmt; /* is the stmt INSERT/UPDATE/DELETE? Note:
+ mod_stmt is set when we plan the query */
bool into; /* INTO supplied? */
bool strict; /* INTO STRICT flag */
PLpgSQL_rec *rec; /* INTO target, if record */
PLpgSQL_row *row; /* INTO target, if row */
} PLpgSQL_stmt_execsql;
-
-typedef struct
-{ /* Dynamic SQL string to execute */
+/*
+ * Dynamic SQL string to execute
+ */
+typedef struct PLpgSQL_stmt_dynexecute
+{
int cmd_type;
int lineno;
PLpgSQL_expr *query; /* string expression */
@@ -679,9 +770,11 @@ typedef struct
List *params; /* USING expressions */
} PLpgSQL_stmt_dynexecute;
-
+/*
+ * Hash lookup key for functions
+ */
typedef struct PLpgSQL_func_hashkey
-{ /* Hash lookup key for functions */
+{
Oid funcOid;
bool isTrigger; /* true if called as a trigger */
@@ -710,6 +803,9 @@ typedef struct PLpgSQL_func_hashkey
Oid argtypes[FUNC_MAX_ARGS];
} PLpgSQL_func_hashkey;
+/*
+ * Trigger type
+ */
typedef enum PLpgSQL_trigtype
{
PLPGSQL_DML_TRIGGER,
@@ -717,8 +813,11 @@ typedef enum PLpgSQL_trigtype
PLPGSQL_NOT_TRIGGER
} PLpgSQL_trigtype;
+/*
+ * Complete compiled function
+ */
typedef struct PLpgSQL_function
-{ /* Complete compiled function */
+{
char *fn_signature;
Oid fn_oid;
TransactionId fn_xmin;
@@ -777,9 +876,11 @@ typedef struct PLpgSQL_function
unsigned long use_count;
} PLpgSQL_function;
-
+/*
+ * Runtime execution data
+ */
typedef struct PLpgSQL_execstate
-{ /* Runtime execution data */
+{
PLpgSQL_function *func; /* function being executed */
Datum retval;
@@ -831,7 +932,6 @@ typedef struct PLpgSQL_execstate
void *plugin_info; /* reserved for use by optional plugin */
} PLpgSQL_execstate;
-
/*
* A PLpgSQL_plugin structure represents an instrumentation plugin.
* To instrument PL/pgSQL, a plugin library must access the rendezvous
@@ -846,24 +946,23 @@ typedef struct PLpgSQL_execstate
* (if the pointers are non-NULL) to give the plugin a chance to watch
* what we are doing.
*
- * func_setup is called when we start a function, before we've initialized
- * the local variables defined by the function.
+ * func_setup is called when we start a function, before we've initialized
+ * the local variables defined by the function.
*
- * func_beg is called when we start a function, after we've initialized
- * the local variables.
+ * func_beg is called when we start a function, after we've initialized
+ * the local variables.
*
- * func_end is called at the end of a function.
+ * func_end is called at the end of a function.
*
- * stmt_beg and stmt_end are called before and after (respectively) each
- * statement.
+ * stmt_beg and stmt_end are called before and after (respectively) each
+ * statement.
*
* Also, immediately before any call to func_setup, PL/pgSQL fills in the
* error_callback and assign_expr fields with pointers to its own
* plpgsql_exec_error_callback and exec_assign_expr functions. This is
* a somewhat ad-hoc expedient to simplify life for debugger plugins.
*/
-
-typedef struct
+typedef struct PLpgSQL_plugin
{
/* Function pointers set up by the plugin */
void (*func_setup) (PLpgSQL_execstate *estate, PLpgSQL_function *func);
@@ -878,21 +977,22 @@ typedef struct
PLpgSQL_expr *expr);
} PLpgSQL_plugin;
+/*
+ * Struct types used during parsing
+ */
-/* Struct types used during parsing */
-
-typedef struct
+typedef struct PLword
{
char *ident; /* palloc'd converted identifier */
bool quoted; /* Was it double-quoted? */
} PLword;
-typedef struct
+typedef struct PLcword
{
List *idents; /* composite identifiers (list of String) */
} PLcword;
-typedef struct
+typedef struct PLwdatum
{
PLpgSQL_datum *datum; /* referenced variable */
char *ident; /* valid if simple name */
@@ -946,9 +1046,8 @@ extern PLpgSQL_plugin **plpgsql_plugin_ptr;
* Function declarations
**********************************************************************/
-/* ----------
+/*
* Functions in pl_comp.c
- * ----------
*/
extern PLpgSQL_function *plpgsql_compile(FunctionCallInfo fcinfo,
bool forValidator);
@@ -979,15 +1078,13 @@ extern void plpgsql_adddatum(PLpgSQL_datum *new);
extern int plpgsql_add_initdatums(int **varnos);
extern void plpgsql_HashTableInit(void);
-/* ----------
+/*
* Functions in pl_handler.c
- * ----------
*/
extern void _PG_init(void);
-/* ----------
+/*
* Functions in pl_exec.c
- * ----------
*/
extern Datum plpgsql_exec_function(PLpgSQL_function *func,
FunctionCallInfo fcinfo,
@@ -1005,9 +1102,8 @@ extern void plpgsql_exec_get_datum_type_info(PLpgSQL_execstate *estate,
PLpgSQL_datum *datum,
Oid *typeid, int32 *typmod, Oid *collation);
-/* ----------
+/*
* Functions for namespace handling in pl_funcs.c
- * ----------
*/
extern void plpgsql_ns_init(void);
extern void plpgsql_ns_push(const char *label,
@@ -1022,18 +1118,16 @@ extern PLpgSQL_nsitem *plpgsql_ns_lookup_label(PLpgSQL_nsitem *ns_cur,
const char *name);
extern PLpgSQL_nsitem *plpgsql_ns_find_nearest_loop(PLpgSQL_nsitem *ns_cur);
-/* ----------
+/*
* Other functions in pl_funcs.c
- * ----------
*/
extern const char *plpgsql_stmt_typename(PLpgSQL_stmt *stmt);
extern const char *plpgsql_getdiag_kindname(int kind);
extern void plpgsql_free_function_memory(PLpgSQL_function *func);
extern void plpgsql_dumptree(PLpgSQL_function *func);
-/* ----------
+/*
* Scanner functions in pl_scanner.c
- * ----------
*/
extern int plpgsql_base_yylex(void);
extern int plpgsql_yylex(void);
@@ -1051,9 +1145,8 @@ extern int plpgsql_latest_lineno(void);
extern void plpgsql_scanner_init(const char *str);
extern void plpgsql_scanner_finish(void);
-/* ----------
+/*
* Externs in gram.y
- * ----------
*/
extern int plpgsql_yyparse(void);
--
2.9.3
--
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