PostgreSQL Source Code  git master
plpgsql.h File Reference
#include "access/xact.h"
#include "commands/event_trigger.h"
#include "commands/trigger.h"
#include "executor/spi.h"
#include "utils/expandedrecord.h"
#include "utils/typcache.h"
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Data Structures

struct  PLpgSQL_type
 
struct  PLpgSQL_expr
 
struct  PLpgSQL_datum
 
struct  PLpgSQL_variable
 
struct  PLpgSQL_var
 
struct  PLpgSQL_row
 
struct  PLpgSQL_rec
 
struct  PLpgSQL_recfield
 
struct  PLpgSQL_arrayelem
 
struct  PLpgSQL_nsitem
 
struct  PLpgSQL_stmt
 
struct  PLpgSQL_condition
 
struct  PLpgSQL_exception_block
 
struct  PLpgSQL_exception
 
struct  PLpgSQL_stmt_block
 
struct  PLpgSQL_stmt_assign
 
struct  PLpgSQL_stmt_perform
 
struct  PLpgSQL_stmt_call
 
struct  PLpgSQL_stmt_commit
 
struct  PLpgSQL_stmt_rollback
 
struct  PLpgSQL_stmt_set
 
struct  PLpgSQL_diag_item
 
struct  PLpgSQL_stmt_getdiag
 
struct  PLpgSQL_stmt_if
 
struct  PLpgSQL_if_elsif
 
struct  PLpgSQL_stmt_case
 
struct  PLpgSQL_case_when
 
struct  PLpgSQL_stmt_loop
 
struct  PLpgSQL_stmt_while
 
struct  PLpgSQL_stmt_fori
 
struct  PLpgSQL_stmt_forq
 
struct  PLpgSQL_stmt_fors
 
struct  PLpgSQL_stmt_forc
 
struct  PLpgSQL_stmt_dynfors
 
struct  PLpgSQL_stmt_foreach_a
 
struct  PLpgSQL_stmt_open
 
struct  PLpgSQL_stmt_fetch
 
struct  PLpgSQL_stmt_close
 
struct  PLpgSQL_stmt_exit
 
struct  PLpgSQL_stmt_return
 
struct  PLpgSQL_stmt_return_next
 
struct  PLpgSQL_stmt_return_query
 
struct  PLpgSQL_stmt_raise
 
struct  PLpgSQL_raise_option
 
struct  PLpgSQL_stmt_assert
 
struct  PLpgSQL_stmt_execsql
 
struct  PLpgSQL_stmt_dynexecute
 
struct  PLpgSQL_func_hashkey
 
struct  PLpgSQL_function
 
struct  PLpgSQL_execstate
 
struct  PLpgSQL_plugin
 
struct  PLword
 
struct  PLcword
 
struct  PLwdatum
 

Macros

#define TEXTDOMAIN   PG_TEXTDOMAIN("plpgsql")
 
#define _(x)   dgettext(TEXTDOMAIN, x)
 
#define PLPGSQL_XCHECK_NONE   0
 
#define PLPGSQL_XCHECK_SHADOWVAR   (1 << 1)
 
#define PLPGSQL_XCHECK_TOOMANYROWS   (1 << 2)
 
#define PLPGSQL_XCHECK_STRICTMULTIASSIGNMENT   (1 << 3)
 
#define PLPGSQL_XCHECK_ALL   ((int) ~0)
 

Typedefs

typedef enum PLpgSQL_nsitem_type PLpgSQL_nsitem_type
 
typedef enum PLpgSQL_label_type PLpgSQL_label_type
 
typedef enum PLpgSQL_datum_type PLpgSQL_datum_type
 
typedef enum PLpgSQL_promise_type PLpgSQL_promise_type
 
typedef enum PLpgSQL_type_type PLpgSQL_type_type
 
typedef enum PLpgSQL_stmt_type PLpgSQL_stmt_type
 
typedef enum PLpgSQL_getdiag_kind PLpgSQL_getdiag_kind
 
typedef enum PLpgSQL_raise_option_type PLpgSQL_raise_option_type
 
typedef enum PLpgSQL_resolve_option PLpgSQL_resolve_option
 
typedef struct PLpgSQL_type PLpgSQL_type
 
typedef struct PLpgSQL_expr PLpgSQL_expr
 
typedef struct PLpgSQL_datum PLpgSQL_datum
 
typedef struct PLpgSQL_variable PLpgSQL_variable
 
typedef struct PLpgSQL_var PLpgSQL_var
 
typedef struct PLpgSQL_row PLpgSQL_row
 
typedef struct PLpgSQL_rec PLpgSQL_rec
 
typedef struct PLpgSQL_recfield PLpgSQL_recfield
 
typedef struct PLpgSQL_arrayelem PLpgSQL_arrayelem
 
typedef struct PLpgSQL_nsitem PLpgSQL_nsitem
 
typedef struct PLpgSQL_stmt PLpgSQL_stmt
 
typedef struct PLpgSQL_condition PLpgSQL_condition
 
typedef struct PLpgSQL_exception_block PLpgSQL_exception_block
 
typedef struct PLpgSQL_exception PLpgSQL_exception
 
typedef struct PLpgSQL_stmt_block PLpgSQL_stmt_block
 
typedef struct PLpgSQL_stmt_assign PLpgSQL_stmt_assign
 
typedef struct PLpgSQL_stmt_perform PLpgSQL_stmt_perform
 
typedef struct PLpgSQL_stmt_call PLpgSQL_stmt_call
 
typedef struct PLpgSQL_stmt_commit PLpgSQL_stmt_commit
 
typedef struct PLpgSQL_stmt_rollback PLpgSQL_stmt_rollback
 
typedef struct PLpgSQL_stmt_set PLpgSQL_stmt_set
 
typedef struct PLpgSQL_diag_item PLpgSQL_diag_item
 
typedef struct PLpgSQL_stmt_getdiag PLpgSQL_stmt_getdiag
 
typedef struct PLpgSQL_stmt_if PLpgSQL_stmt_if
 
typedef struct PLpgSQL_if_elsif PLpgSQL_if_elsif
 
typedef struct PLpgSQL_stmt_case PLpgSQL_stmt_case
 
typedef struct PLpgSQL_case_when PLpgSQL_case_when
 
typedef struct PLpgSQL_stmt_loop PLpgSQL_stmt_loop
 
typedef struct PLpgSQL_stmt_while PLpgSQL_stmt_while
 
typedef struct PLpgSQL_stmt_fori PLpgSQL_stmt_fori
 
typedef struct PLpgSQL_stmt_forq PLpgSQL_stmt_forq
 
typedef struct PLpgSQL_stmt_fors PLpgSQL_stmt_fors
 
typedef struct PLpgSQL_stmt_forc PLpgSQL_stmt_forc
 
typedef struct PLpgSQL_stmt_dynfors PLpgSQL_stmt_dynfors
 
typedef struct PLpgSQL_stmt_foreach_a PLpgSQL_stmt_foreach_a
 
typedef struct PLpgSQL_stmt_open PLpgSQL_stmt_open
 
typedef struct PLpgSQL_stmt_fetch PLpgSQL_stmt_fetch
 
typedef struct PLpgSQL_stmt_close PLpgSQL_stmt_close
 
typedef struct PLpgSQL_stmt_exit PLpgSQL_stmt_exit
 
typedef struct PLpgSQL_stmt_return PLpgSQL_stmt_return
 
typedef struct PLpgSQL_stmt_return_next PLpgSQL_stmt_return_next
 
typedef struct PLpgSQL_stmt_return_query PLpgSQL_stmt_return_query
 
typedef struct PLpgSQL_stmt_raise PLpgSQL_stmt_raise
 
typedef struct PLpgSQL_raise_option PLpgSQL_raise_option
 
typedef struct PLpgSQL_stmt_assert PLpgSQL_stmt_assert
 
typedef struct PLpgSQL_stmt_execsql PLpgSQL_stmt_execsql
 
typedef struct PLpgSQL_stmt_dynexecute PLpgSQL_stmt_dynexecute
 
typedef struct PLpgSQL_func_hashkey PLpgSQL_func_hashkey
 
typedef enum PLpgSQL_trigtype PLpgSQL_trigtype
 
typedef struct PLpgSQL_function PLpgSQL_function
 
typedef struct PLpgSQL_execstate PLpgSQL_execstate
 
typedef struct PLpgSQL_plugin PLpgSQL_plugin
 
typedef struct PLword PLword
 
typedef struct PLcword PLcword
 
typedef struct PLwdatum PLwdatum
 

Enumerations

enum  PLpgSQL_nsitem_type { PLPGSQL_NSTYPE_LABEL, PLPGSQL_NSTYPE_VAR, PLPGSQL_NSTYPE_REC }
 
enum  PLpgSQL_label_type { PLPGSQL_LABEL_BLOCK, PLPGSQL_LABEL_LOOP, PLPGSQL_LABEL_OTHER }
 
enum  PLpgSQL_datum_type {
  PLPGSQL_DTYPE_VAR, PLPGSQL_DTYPE_ROW, PLPGSQL_DTYPE_REC, PLPGSQL_DTYPE_RECFIELD,
  PLPGSQL_DTYPE_ARRAYELEM, PLPGSQL_DTYPE_PROMISE
}
 
enum  PLpgSQL_promise_type {
  PLPGSQL_PROMISE_NONE = 0, PLPGSQL_PROMISE_TG_NAME, PLPGSQL_PROMISE_TG_WHEN, PLPGSQL_PROMISE_TG_LEVEL,
  PLPGSQL_PROMISE_TG_OP, PLPGSQL_PROMISE_TG_RELID, PLPGSQL_PROMISE_TG_TABLE_NAME, PLPGSQL_PROMISE_TG_TABLE_SCHEMA,
  PLPGSQL_PROMISE_TG_NARGS, PLPGSQL_PROMISE_TG_ARGV, PLPGSQL_PROMISE_TG_EVENT, PLPGSQL_PROMISE_TG_TAG
}
 
enum  PLpgSQL_type_type { PLPGSQL_TTYPE_SCALAR, PLPGSQL_TTYPE_REC, PLPGSQL_TTYPE_PSEUDO }
 
enum  PLpgSQL_stmt_type {
  PLPGSQL_STMT_BLOCK, PLPGSQL_STMT_ASSIGN, PLPGSQL_STMT_IF, PLPGSQL_STMT_CASE,
  PLPGSQL_STMT_LOOP, PLPGSQL_STMT_WHILE, PLPGSQL_STMT_FORI, PLPGSQL_STMT_FORS,
  PLPGSQL_STMT_FORC, PLPGSQL_STMT_FOREACH_A, PLPGSQL_STMT_EXIT, PLPGSQL_STMT_RETURN,
  PLPGSQL_STMT_RETURN_NEXT, PLPGSQL_STMT_RETURN_QUERY, PLPGSQL_STMT_RAISE, PLPGSQL_STMT_ASSERT,
  PLPGSQL_STMT_EXECSQL, PLPGSQL_STMT_DYNEXECUTE, PLPGSQL_STMT_DYNFORS, PLPGSQL_STMT_GETDIAG,
  PLPGSQL_STMT_OPEN, PLPGSQL_STMT_FETCH, PLPGSQL_STMT_CLOSE, PLPGSQL_STMT_PERFORM,
  PLPGSQL_STMT_CALL, PLPGSQL_STMT_COMMIT, PLPGSQL_STMT_ROLLBACK, PLPGSQL_STMT_SET
}
 
enum  { PLPGSQL_RC_OK, PLPGSQL_RC_EXIT, PLPGSQL_RC_RETURN, PLPGSQL_RC_CONTINUE }
 
enum  PLpgSQL_getdiag_kind {
  PLPGSQL_GETDIAG_ROW_COUNT, PLPGSQL_GETDIAG_CONTEXT, PLPGSQL_GETDIAG_ERROR_CONTEXT, PLPGSQL_GETDIAG_ERROR_DETAIL,
  PLPGSQL_GETDIAG_ERROR_HINT, PLPGSQL_GETDIAG_RETURNED_SQLSTATE, PLPGSQL_GETDIAG_COLUMN_NAME, PLPGSQL_GETDIAG_CONSTRAINT_NAME,
  PLPGSQL_GETDIAG_DATATYPE_NAME, PLPGSQL_GETDIAG_MESSAGE_TEXT, PLPGSQL_GETDIAG_TABLE_NAME, PLPGSQL_GETDIAG_SCHEMA_NAME
}
 
enum  PLpgSQL_raise_option_type {
  PLPGSQL_RAISEOPTION_ERRCODE, PLPGSQL_RAISEOPTION_MESSAGE, PLPGSQL_RAISEOPTION_DETAIL, PLPGSQL_RAISEOPTION_HINT,
  PLPGSQL_RAISEOPTION_COLUMN, PLPGSQL_RAISEOPTION_CONSTRAINT, PLPGSQL_RAISEOPTION_DATATYPE, PLPGSQL_RAISEOPTION_TABLE,
  PLPGSQL_RAISEOPTION_SCHEMA
}
 
enum  PLpgSQL_resolve_option { PLPGSQL_RESOLVE_ERROR, PLPGSQL_RESOLVE_VARIABLE, PLPGSQL_RESOLVE_COLUMN }
 
enum  PLpgSQL_trigtype { PLPGSQL_DML_TRIGGER, PLPGSQL_EVENT_TRIGGER, PLPGSQL_NOT_TRIGGER }
 
enum  IdentifierLookup { IDENTIFIER_LOOKUP_NORMAL, IDENTIFIER_LOOKUP_DECLARE, IDENTIFIER_LOOKUP_EXPR }
 

Functions

PLpgSQL_functionplpgsql_compile (FunctionCallInfo fcinfo, bool forValidator)
 
PLpgSQL_functionplpgsql_compile_inline (char *proc_source)
 
void plpgsql_parser_setup (struct ParseState *pstate, PLpgSQL_expr *expr)
 
bool plpgsql_parse_word (char *word1, const char *yytxt, bool lookup, PLwdatum *wdatum, PLword *word)
 
bool plpgsql_parse_dblword (char *word1, char *word2, PLwdatum *wdatum, PLcword *cword)
 
bool plpgsql_parse_tripword (char *word1, char *word2, char *word3, PLwdatum *wdatum, PLcword *cword)
 
PLpgSQL_typeplpgsql_parse_wordtype (char *ident)
 
PLpgSQL_typeplpgsql_parse_cwordtype (List *idents)
 
PLpgSQL_typeplpgsql_parse_wordrowtype (char *ident)
 
PLpgSQL_typeplpgsql_parse_cwordrowtype (List *idents)
 
PLpgSQL_typeplpgsql_build_datatype (Oid typeOid, int32 typmod, Oid collation, TypeName *origtypname)
 
PLpgSQL_variableplpgsql_build_variable (const char *refname, int lineno, PLpgSQL_type *dtype, bool add2namespace)
 
PLpgSQL_recplpgsql_build_record (const char *refname, int lineno, PLpgSQL_type *dtype, Oid rectypeid, bool add2namespace)
 
PLpgSQL_recfieldplpgsql_build_recfield (PLpgSQL_rec *rec, const char *fldname)
 
int plpgsql_recognize_err_condition (const char *condname, bool allow_sqlstate)
 
PLpgSQL_conditionplpgsql_parse_err_condition (char *condname)
 
void plpgsql_adddatum (PLpgSQL_datum *newdatum)
 
int plpgsql_add_initdatums (int **varnos)
 
void plpgsql_HashTableInit (void)
 
void _PG_init (void)
 
Datum plpgsql_exec_function (PLpgSQL_function *func, FunctionCallInfo fcinfo, EState *simple_eval_estate, ResourceOwner simple_eval_resowner, bool atomic)
 
HeapTuple plpgsql_exec_trigger (PLpgSQL_function *func, TriggerData *trigdata)
 
void plpgsql_exec_event_trigger (PLpgSQL_function *func, EventTriggerData *trigdata)
 
void plpgsql_xact_cb (XactEvent event, void *arg)
 
void plpgsql_subxact_cb (SubXactEvent event, SubTransactionId mySubid, SubTransactionId parentSubid, void *arg)
 
Oid plpgsql_exec_get_datum_type (PLpgSQL_execstate *estate, PLpgSQL_datum *datum)
 
void plpgsql_exec_get_datum_type_info (PLpgSQL_execstate *estate, PLpgSQL_datum *datum, Oid *typeId, int32 *typMod, Oid *collation)
 
void plpgsql_ns_init (void)
 
void plpgsql_ns_push (const char *label, PLpgSQL_label_type label_type)
 
void plpgsql_ns_pop (void)
 
PLpgSQL_nsitemplpgsql_ns_top (void)
 
void plpgsql_ns_additem (PLpgSQL_nsitem_type itemtype, int itemno, const char *name)
 
PLpgSQL_nsitemplpgsql_ns_lookup (PLpgSQL_nsitem *ns_cur, bool localmode, const char *name1, const char *name2, const char *name3, int *names_used)
 
PLpgSQL_nsitemplpgsql_ns_lookup_label (PLpgSQL_nsitem *ns_cur, const char *name)
 
PLpgSQL_nsitemplpgsql_ns_find_nearest_loop (PLpgSQL_nsitem *ns_cur)
 
const char * plpgsql_stmt_typename (PLpgSQL_stmt *stmt)
 
const char * plpgsql_getdiag_kindname (PLpgSQL_getdiag_kind kind)
 
void plpgsql_free_function_memory (PLpgSQL_function *func)
 
void plpgsql_dumptree (PLpgSQL_function *func)
 
int plpgsql_base_yylex (void)
 
int plpgsql_yylex (void)
 
void plpgsql_push_back_token (int token)
 
bool plpgsql_token_is_unreserved_keyword (int token)
 
void plpgsql_append_source_text (StringInfo buf, int startlocation, int endlocation)
 
int plpgsql_peek (void)
 
void plpgsql_peek2 (int *tok1_p, int *tok2_p, int *tok1_loc, int *tok2_loc)
 
int plpgsql_scanner_errposition (int location)
 
void plpgsql_yyerror (const char *message) pg_attribute_noreturn()
 
int plpgsql_location_to_lineno (int location)
 
int plpgsql_latest_lineno (void)
 
void plpgsql_scanner_init (const char *str)
 
void plpgsql_scanner_finish (void)
 
int plpgsql_yyparse (void)
 

Variables

IdentifierLookup plpgsql_IdentifierLookup
 
int plpgsql_variable_conflict
 
bool plpgsql_print_strict_params
 
bool plpgsql_check_asserts
 
int plpgsql_extra_warnings
 
int plpgsql_extra_errors
 
bool plpgsql_check_syntax
 
bool plpgsql_DumpExecTree
 
PLpgSQL_stmt_blockplpgsql_parse_result
 
int plpgsql_nDatums
 
PLpgSQL_datum ** plpgsql_Datums
 
char * plpgsql_error_funcname
 
PLpgSQL_functionplpgsql_curr_compile
 
MemoryContext plpgsql_compile_tmp_cxt
 
PLpgSQL_plugin ** plpgsql_plugin_ptr
 

Macro Definition Documentation

◆ _

#define _ (   x)    dgettext(TEXTDOMAIN, x)

Definition at line 36 of file plpgsql.h.

◆ PLPGSQL_XCHECK_ALL

#define PLPGSQL_XCHECK_ALL   ((int) ~0)

Definition at line 1210 of file plpgsql.h.

Referenced by plpgsql_extra_checks_check_hook().

◆ PLPGSQL_XCHECK_NONE

#define PLPGSQL_XCHECK_NONE   0

Definition at line 1206 of file plpgsql.h.

Referenced by plpgsql_extra_checks_check_hook().

◆ PLPGSQL_XCHECK_SHADOWVAR

#define PLPGSQL_XCHECK_SHADOWVAR   (1 << 1)

Definition at line 1207 of file plpgsql.h.

Referenced by plpgsql_extra_checks_check_hook().

◆ PLPGSQL_XCHECK_STRICTMULTIASSIGNMENT

#define PLPGSQL_XCHECK_STRICTMULTIASSIGNMENT   (1 << 3)

Definition at line 1209 of file plpgsql.h.

Referenced by exec_move_row_from_fields(), and plpgsql_extra_checks_check_hook().

◆ PLPGSQL_XCHECK_TOOMANYROWS

#define PLPGSQL_XCHECK_TOOMANYROWS   (1 << 2)

Definition at line 1208 of file plpgsql.h.

Referenced by exec_stmt_execsql(), and plpgsql_extra_checks_check_hook().

◆ TEXTDOMAIN

#define TEXTDOMAIN   PG_TEXTDOMAIN("plpgsql")

Definition at line 33 of file plpgsql.h.

Typedef Documentation

◆ PLcword

typedef struct PLcword PLcword

◆ PLpgSQL_arrayelem

◆ PLpgSQL_case_when

◆ PLpgSQL_condition

◆ PLpgSQL_datum

typedef struct PLpgSQL_datum PLpgSQL_datum

◆ PLpgSQL_datum_type

◆ PLpgSQL_diag_item

◆ PLpgSQL_exception

◆ PLpgSQL_exception_block

◆ PLpgSQL_execstate

◆ PLpgSQL_expr

typedef struct PLpgSQL_expr PLpgSQL_expr

◆ PLpgSQL_func_hashkey

◆ PLpgSQL_function

◆ PLpgSQL_getdiag_kind

◆ PLpgSQL_if_elsif

◆ PLpgSQL_label_type

◆ PLpgSQL_nsitem

◆ PLpgSQL_nsitem_type

◆ PLpgSQL_plugin

◆ PLpgSQL_promise_type

◆ PLpgSQL_raise_option

◆ PLpgSQL_raise_option_type

◆ PLpgSQL_rec

typedef struct PLpgSQL_rec PLpgSQL_rec

◆ PLpgSQL_recfield

◆ PLpgSQL_resolve_option

◆ PLpgSQL_row

typedef struct PLpgSQL_row PLpgSQL_row

◆ PLpgSQL_stmt

typedef struct PLpgSQL_stmt PLpgSQL_stmt

◆ PLpgSQL_stmt_assert

◆ PLpgSQL_stmt_assign

◆ PLpgSQL_stmt_block

◆ PLpgSQL_stmt_call

◆ PLpgSQL_stmt_case

◆ PLpgSQL_stmt_close

◆ PLpgSQL_stmt_commit

◆ PLpgSQL_stmt_dynexecute

◆ PLpgSQL_stmt_dynfors

◆ PLpgSQL_stmt_execsql

◆ PLpgSQL_stmt_exit

◆ PLpgSQL_stmt_fetch

◆ PLpgSQL_stmt_forc

◆ PLpgSQL_stmt_foreach_a

◆ PLpgSQL_stmt_fori

◆ PLpgSQL_stmt_forq

◆ PLpgSQL_stmt_fors

◆ PLpgSQL_stmt_getdiag

◆ PLpgSQL_stmt_if

◆ PLpgSQL_stmt_loop

◆ PLpgSQL_stmt_open

◆ PLpgSQL_stmt_perform

◆ PLpgSQL_stmt_raise

◆ PLpgSQL_stmt_return

◆ PLpgSQL_stmt_return_next

◆ PLpgSQL_stmt_return_query

◆ PLpgSQL_stmt_rollback

◆ PLpgSQL_stmt_set

◆ PLpgSQL_stmt_type

◆ PLpgSQL_stmt_while

◆ PLpgSQL_trigtype

◆ PLpgSQL_type

typedef struct PLpgSQL_type PLpgSQL_type

◆ PLpgSQL_type_type

◆ PLpgSQL_var

typedef struct PLpgSQL_var PLpgSQL_var

◆ PLpgSQL_variable

◆ PLwdatum

typedef struct PLwdatum PLwdatum

◆ PLword

typedef struct PLword PLword

Enumeration Type Documentation

◆ anonymous enum

anonymous enum
Enumerator
PLPGSQL_RC_OK 
PLPGSQL_RC_EXIT 
PLPGSQL_RC_RETURN 
PLPGSQL_RC_CONTINUE 

Definition at line 138 of file plpgsql.h.

◆ IdentifierLookup

Enumerator
IDENTIFIER_LOOKUP_NORMAL 
IDENTIFIER_LOOKUP_DECLARE 
IDENTIFIER_LOOKUP_EXPR 

Definition at line 1190 of file plpgsql.h.

1191 {
1192  IDENTIFIER_LOOKUP_NORMAL, /* normal processing of var names */
1193  IDENTIFIER_LOOKUP_DECLARE, /* In DECLARE --- don't look up names */
1194  IDENTIFIER_LOOKUP_EXPR /* In SQL expression --- special case */
IdentifierLookup
Definition: plpgsql.h:1190

◆ PLpgSQL_datum_type

Enumerator
PLPGSQL_DTYPE_VAR 
PLPGSQL_DTYPE_ROW 
PLPGSQL_DTYPE_REC 
PLPGSQL_DTYPE_RECFIELD 
PLPGSQL_DTYPE_ARRAYELEM 
PLPGSQL_DTYPE_PROMISE 

Definition at line 61 of file plpgsql.h.

◆ PLpgSQL_getdiag_kind

Enumerator
PLPGSQL_GETDIAG_ROW_COUNT 
PLPGSQL_GETDIAG_CONTEXT 
PLPGSQL_GETDIAG_ERROR_CONTEXT 
PLPGSQL_GETDIAG_ERROR_DETAIL 
PLPGSQL_GETDIAG_ERROR_HINT 
PLPGSQL_GETDIAG_RETURNED_SQLSTATE 
PLPGSQL_GETDIAG_COLUMN_NAME 
PLPGSQL_GETDIAG_CONSTRAINT_NAME 
PLPGSQL_GETDIAG_DATATYPE_NAME 
PLPGSQL_GETDIAG_MESSAGE_TEXT 
PLPGSQL_GETDIAG_TABLE_NAME 
PLPGSQL_GETDIAG_SCHEMA_NAME 

Definition at line 149 of file plpgsql.h.

◆ PLpgSQL_label_type

Enumerator
PLPGSQL_LABEL_BLOCK 
PLPGSQL_LABEL_LOOP 
PLPGSQL_LABEL_OTHER 

Definition at line 51 of file plpgsql.h.

52 {
53  PLPGSQL_LABEL_BLOCK, /* DECLARE/BEGIN block */
54  PLPGSQL_LABEL_LOOP, /* looping construct */
55  PLPGSQL_LABEL_OTHER /* anything else */
PLpgSQL_label_type
Definition: plpgsql.h:51

◆ PLpgSQL_nsitem_type

Enumerator
PLPGSQL_NSTYPE_LABEL 
PLPGSQL_NSTYPE_VAR 
PLPGSQL_NSTYPE_REC 

Definition at line 41 of file plpgsql.h.

42 {
43  PLPGSQL_NSTYPE_LABEL, /* block label */
44  PLPGSQL_NSTYPE_VAR, /* scalar variable */
45  PLPGSQL_NSTYPE_REC /* composite variable */
PLpgSQL_nsitem_type
Definition: plpgsql.h:41

◆ PLpgSQL_promise_type

Enumerator
PLPGSQL_PROMISE_NONE 
PLPGSQL_PROMISE_TG_NAME 
PLPGSQL_PROMISE_TG_WHEN 
PLPGSQL_PROMISE_TG_LEVEL 
PLPGSQL_PROMISE_TG_OP 
PLPGSQL_PROMISE_TG_RELID 
PLPGSQL_PROMISE_TG_TABLE_NAME 
PLPGSQL_PROMISE_TG_TABLE_SCHEMA 
PLPGSQL_PROMISE_TG_NARGS 
PLPGSQL_PROMISE_TG_ARGV 
PLPGSQL_PROMISE_TG_EVENT 
PLPGSQL_PROMISE_TG_TAG 

Definition at line 74 of file plpgsql.h.

◆ PLpgSQL_raise_option_type

Enumerator
PLPGSQL_RAISEOPTION_ERRCODE 
PLPGSQL_RAISEOPTION_MESSAGE 
PLPGSQL_RAISEOPTION_DETAIL 
PLPGSQL_RAISEOPTION_HINT 
PLPGSQL_RAISEOPTION_COLUMN 
PLPGSQL_RAISEOPTION_CONSTRAINT 
PLPGSQL_RAISEOPTION_DATATYPE 
PLPGSQL_RAISEOPTION_TABLE 
PLPGSQL_RAISEOPTION_SCHEMA 

Definition at line 168 of file plpgsql.h.

◆ PLpgSQL_resolve_option

Enumerator
PLPGSQL_RESOLVE_ERROR 
PLPGSQL_RESOLVE_VARIABLE 
PLPGSQL_RESOLVE_COLUMN 

Definition at line 184 of file plpgsql.h.

185 {
186  PLPGSQL_RESOLVE_ERROR, /* throw error if ambiguous */
187  PLPGSQL_RESOLVE_VARIABLE, /* prefer plpgsql var to table column */
188  PLPGSQL_RESOLVE_COLUMN /* prefer table column to plpgsql var */
PLpgSQL_resolve_option
Definition: plpgsql.h:184

◆ PLpgSQL_stmt_type

Enumerator
PLPGSQL_STMT_BLOCK 
PLPGSQL_STMT_ASSIGN 
PLPGSQL_STMT_IF 
PLPGSQL_STMT_CASE 
PLPGSQL_STMT_LOOP 
PLPGSQL_STMT_WHILE 
PLPGSQL_STMT_FORI 
PLPGSQL_STMT_FORS 
PLPGSQL_STMT_FORC 
PLPGSQL_STMT_FOREACH_A 
PLPGSQL_STMT_EXIT 
PLPGSQL_STMT_RETURN 
PLPGSQL_STMT_RETURN_NEXT 
PLPGSQL_STMT_RETURN_QUERY 
PLPGSQL_STMT_RAISE 
PLPGSQL_STMT_ASSERT 
PLPGSQL_STMT_EXECSQL 
PLPGSQL_STMT_DYNEXECUTE 
PLPGSQL_STMT_DYNFORS 
PLPGSQL_STMT_GETDIAG 
PLPGSQL_STMT_OPEN 
PLPGSQL_STMT_FETCH 
PLPGSQL_STMT_CLOSE 
PLPGSQL_STMT_PERFORM 
PLPGSQL_STMT_CALL 
PLPGSQL_STMT_COMMIT 
PLPGSQL_STMT_ROLLBACK 
PLPGSQL_STMT_SET 

Definition at line 103 of file plpgsql.h.

104 {
PLpgSQL_stmt_type
Definition: plpgsql.h:103

◆ PLpgSQL_trigtype

Enumerator
PLPGSQL_DML_TRIGGER 
PLPGSQL_EVENT_TRIGGER 
PLPGSQL_NOT_TRIGGER 

Definition at line 981 of file plpgsql.h.

◆ PLpgSQL_type_type

Enumerator
PLPGSQL_TTYPE_SCALAR 
PLPGSQL_TTYPE_REC 
PLPGSQL_TTYPE_PSEUDO 

Definition at line 93 of file plpgsql.h.

94 {
95  PLPGSQL_TTYPE_SCALAR, /* scalar types and domains */
96  PLPGSQL_TTYPE_REC, /* composite types, including RECORD */
97  PLPGSQL_TTYPE_PSEUDO /* pseudotypes */
PLpgSQL_type_type
Definition: plpgsql.h:93

Function Documentation

◆ _PG_init()

void _PG_init ( void  )

Definition at line 56 of file auth_delay.c.

57 {
58  /* Define custom GUC variables */
59  DefineCustomIntVariable("auth_delay.milliseconds",
60  "Milliseconds to delay before reporting authentication failure",
61  NULL,
63  0,
64  0, INT_MAX / 1000,
65  PGC_SIGHUP,
67  NULL,
68  NULL,
69  NULL);
70  /* Install Hooks */
73 }
void DefineCustomIntVariable(const char *name, const char *short_desc, const char *long_desc, int *valueAddr, int bootValue, int minValue, int maxValue, GucContext context, int flags, GucIntCheckHook check_hook, GucIntAssignHook assign_hook, GucShowHook show_hook)
Definition: guc.c:8818
ClientAuthentication_hook_type ClientAuthentication_hook
Definition: auth.c:241
static ClientAuthentication_hook_type original_client_auth_hook
Definition: auth_delay.c:29
Definition: guc.h:72
static void auth_delay_checks(Port *port, int status)
Definition: auth_delay.c:35
static int auth_delay_milliseconds
Definition: auth_delay.c:26
#define GUC_UNIT_MS
Definition: guc.h:225

◆ plpgsql_add_initdatums()

int plpgsql_add_initdatums ( int **  varnos)

Definition at line 2352 of file pl_comp.c.

References datums_last, PLpgSQL_datum::dno, i, palloc(), PLPGSQL_DTYPE_REC, PLPGSQL_DTYPE_VAR, and plpgsql_nDatums.

2353 {
2354  int i;
2355  int n = 0;
2356 
2357  /*
2358  * The set of dtypes recognized here must match what exec_stmt_block()
2359  * cares about (re)initializing at block entry.
2360  */
2361  for (i = datums_last; i < plpgsql_nDatums; i++)
2362  {
2363  switch (plpgsql_Datums[i]->dtype)
2364  {
2365  case PLPGSQL_DTYPE_VAR:
2366  case PLPGSQL_DTYPE_REC:
2367  n++;
2368  break;
2369 
2370  default:
2371  break;
2372  }
2373  }
2374 
2375  if (varnos != NULL)
2376  {
2377  if (n > 0)
2378  {
2379  *varnos = (int *) palloc(sizeof(int) * n);
2380 
2381  n = 0;
2382  for (i = datums_last; i < plpgsql_nDatums; i++)
2383  {
2384  switch (plpgsql_Datums[i]->dtype)
2385  {
2386  case PLPGSQL_DTYPE_VAR:
2387  case PLPGSQL_DTYPE_REC:
2388  (*varnos)[n++] = plpgsql_Datums[i]->dno;
2389 
2390  default:
2391  break;
2392  }
2393  }
2394  }
2395  else
2396  *varnos = NULL;
2397  }
2398 
2400  return n;
2401 }
int plpgsql_nDatums
Definition: pl_comp.c:44
PLpgSQL_datum ** plpgsql_Datums
Definition: pl_comp.c:45
void * palloc(Size size)
Definition: mcxt.c:949
int i
static int datums_last
Definition: pl_comp.c:46

◆ plpgsql_adddatum()

void plpgsql_adddatum ( PLpgSQL_datum newdatum)

Definition at line 2291 of file pl_comp.c.

References datums_alloc, PLpgSQL_datum::dno, plpgsql_nDatums, and repalloc().

Referenced by do_compile(), plpgsql_build_recfield(), plpgsql_build_record(), and plpgsql_build_variable().

2292 {
2294  {
2295  datums_alloc *= 2;
2297  }
2298 
2299  newdatum->dno = plpgsql_nDatums;
2300  plpgsql_Datums[plpgsql_nDatums++] = newdatum;
2301 }
int plpgsql_nDatums
Definition: pl_comp.c:44
PLpgSQL_datum ** plpgsql_Datums
Definition: pl_comp.c:45
static int datums_alloc
Definition: pl_comp.c:43
void * repalloc(void *pointer, Size size)
Definition: mcxt.c:1069

◆ plpgsql_append_source_text()

void plpgsql_append_source_text ( StringInfo  buf,
int  startlocation,
int  endlocation 
)

Definition at line 404 of file pl_scanner.c.

References appendBinaryStringInfo(), Assert, and scanorig.

406 {
407  Assert(startlocation <= endlocation);
408  appendBinaryStringInfo(buf, scanorig + startlocation,
409  endlocation - startlocation);
410 }
static const char * scanorig
Definition: pl_scanner.c:110
#define Assert(condition)
Definition: c.h:738
void appendBinaryStringInfo(StringInfo str, const char *data, int datalen)
Definition: stringinfo.c:227

◆ plpgsql_base_yylex()

int plpgsql_base_yylex ( void  )

◆ plpgsql_build_datatype()

PLpgSQL_type* plpgsql_build_datatype ( Oid  typeOid,
int32  typmod,
Oid  collation,
TypeName origtypname 
)

Definition at line 2049 of file pl_comp.c.

References build_datatype(), elog, ERROR, HeapTupleIsValid, ObjectIdGetDatum, ReleaseSysCache(), SearchSysCache1(), and TYPEOID.

Referenced by do_compile(), exec_stmt_case(), plpgsql_compile_inline(), plpgsql_parse_cwordrowtype(), and plpgsql_parse_wordrowtype().

2051 {
2052  HeapTuple typeTup;
2053  PLpgSQL_type *typ;
2054 
2055  typeTup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
2056  if (!HeapTupleIsValid(typeTup))
2057  elog(ERROR, "cache lookup failed for type %u", typeOid);
2058 
2059  typ = build_datatype(typeTup, typmod, collation, origtypname);
2060 
2061  ReleaseSysCache(typeTup);
2062 
2063  return typ;
2064 }
static PLpgSQL_type * build_datatype(HeapTuple typeTup, int32 typmod, Oid collation, TypeName *origtypname)
Definition: pl_comp.c:2071
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1116
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1164
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define elog(elevel,...)
Definition: elog.h:214

◆ plpgsql_build_recfield()

PLpgSQL_recfield* plpgsql_build_recfield ( PLpgSQL_rec rec,
const char *  fldname 
)

Definition at line 2002 of file pl_comp.c.

References Assert, PLpgSQL_datum::dno, PLpgSQL_rec::dno, PLpgSQL_recfield::dtype, PLpgSQL_recfield::fieldname, PLpgSQL_rec::firstfield, i, INVALID_TUPLEDESC_IDENTIFIER, PLpgSQL_recfield::nextfield, palloc0(), plpgsql_adddatum(), PLPGSQL_DTYPE_RECFIELD, pstrdup(), PLpgSQL_recfield::recparentno, and PLpgSQL_recfield::rectupledescid.

Referenced by plpgsql_parse_dblword(), and plpgsql_parse_tripword().

2003 {
2004  PLpgSQL_recfield *recfield;
2005  int i;
2006 
2007  /* search for an existing datum referencing this field */
2008  i = rec->firstfield;
2009  while (i >= 0)
2010  {
2012 
2014  fld->recparentno == rec->dno);
2015  if (strcmp(fld->fieldname, fldname) == 0)
2016  return fld;
2017  i = fld->nextfield;
2018  }
2019 
2020  /* nope, so make a new one */
2021  recfield = palloc0(sizeof(PLpgSQL_recfield));
2022  recfield->dtype = PLPGSQL_DTYPE_RECFIELD;
2023  recfield->fieldname = pstrdup(fldname);
2024  recfield->recparentno = rec->dno;
2026 
2027  plpgsql_adddatum((PLpgSQL_datum *) recfield);
2028 
2029  /* now we can link it into the parent's chain */
2030  recfield->nextfield = rec->firstfield;
2031  rec->firstfield = recfield->dno;
2032 
2033  return recfield;
2034 }
PLpgSQL_datum ** plpgsql_Datums
Definition: pl_comp.c:45
char * pstrdup(const char *in)
Definition: mcxt.c:1186
#define INVALID_TUPLEDESC_IDENTIFIER
Definition: typcache.h:148
void plpgsql_adddatum(PLpgSQL_datum *newdatum)
Definition: pl_comp.c:2291
uint64 rectupledescid
Definition: plpgsql.h:419
void * palloc0(Size size)
Definition: mcxt.c:980
PLpgSQL_datum_type dtype
Definition: plpgsql.h:412
#define Assert(condition)
Definition: c.h:738
int i
char * fieldname
Definition: plpgsql.h:416
int firstfield
Definition: plpgsql.h:399

◆ plpgsql_build_record()

PLpgSQL_rec* plpgsql_build_record ( const char *  refname,
int  lineno,
PLpgSQL_type dtype,
Oid  rectypeid,
bool  add2namespace 
)

Definition at line 1908 of file pl_comp.c.

References PLpgSQL_rec::datatype, PLpgSQL_datum::dno, PLpgSQL_rec::dtype, PLpgSQL_rec::erh, PLpgSQL_rec::firstfield, PLpgSQL_rec::lineno, palloc0(), plpgsql_adddatum(), PLPGSQL_DTYPE_REC, plpgsql_ns_additem(), PLPGSQL_NSTYPE_REC, pstrdup(), PLpgSQL_rec::rectypeid, and PLpgSQL_rec::refname.

Referenced by do_compile(), and plpgsql_build_variable().

1911 {
1912  PLpgSQL_rec *rec;
1913 
1914  rec = palloc0(sizeof(PLpgSQL_rec));
1915  rec->dtype = PLPGSQL_DTYPE_REC;
1916  rec->refname = pstrdup(refname);
1917  rec->lineno = lineno;
1918  /* other fields are left as 0, might be changed by caller */
1919  rec->datatype = dtype;
1920  rec->rectypeid = rectypeid;
1921  rec->firstfield = -1;
1922  rec->erh = NULL;
1924  if (add2namespace)
1926 
1927  return rec;
1928 }
PLpgSQL_datum_type dtype
Definition: plpgsql.h:381
PLpgSQL_type * datatype
Definition: plpgsql.h:396
char * pstrdup(const char *in)
Definition: mcxt.c:1186
void plpgsql_ns_additem(PLpgSQL_nsitem_type itemtype, int itemno, const char *name)
Definition: pl_funcs.c:92
ExpandedRecordHeader * erh
Definition: plpgsql.h:404
char * refname
Definition: plpgsql.h:383
void plpgsql_adddatum(PLpgSQL_datum *newdatum)
Definition: pl_comp.c:2291
void * palloc0(Size size)
Definition: mcxt.c:980
Oid rectypeid
Definition: plpgsql.h:397
int lineno
Definition: plpgsql.h:384
int firstfield
Definition: plpgsql.h:399

◆ plpgsql_build_variable()

PLpgSQL_variable* plpgsql_build_variable ( const char *  refname,
int  lineno,
PLpgSQL_type dtype,
bool  add2namespace 
)

Definition at line 1845 of file pl_comp.c.

References PLpgSQL_var::datatype, PLpgSQL_datum::dno, PLpgSQL_var::dtype, elog, ereport, errcode(), errmsg(), ERROR, format_type_be(), PLpgSQL_var::freeval, PLpgSQL_var::isnull, PLpgSQL_var::lineno, palloc0(), plpgsql_adddatum(), plpgsql_build_record(), PLPGSQL_DTYPE_VAR, plpgsql_ns_additem(), PLPGSQL_NSTYPE_VAR, PLPGSQL_TTYPE_PSEUDO, PLPGSQL_TTYPE_REC, PLPGSQL_TTYPE_SCALAR, pstrdup(), PLpgSQL_var::refname, PLpgSQL_type::ttype, PLpgSQL_type::typoid, and PLpgSQL_var::value.

Referenced by do_compile(), and plpgsql_compile_inline().

1847 {
1848  PLpgSQL_variable *result;
1849 
1850  switch (dtype->ttype)
1851  {
1852  case PLPGSQL_TTYPE_SCALAR:
1853  {
1854  /* Ordinary scalar datatype */
1855  PLpgSQL_var *var;
1856 
1857  var = palloc0(sizeof(PLpgSQL_var));
1858  var->dtype = PLPGSQL_DTYPE_VAR;
1859  var->refname = pstrdup(refname);
1860  var->lineno = lineno;
1861  var->datatype = dtype;
1862  /* other fields are left as 0, might be changed by caller */
1863 
1864  /* preset to NULL */
1865  var->value = 0;
1866  var->isnull = true;
1867  var->freeval = false;
1868 
1870  if (add2namespace)
1872  var->dno,
1873  refname);
1874  result = (PLpgSQL_variable *) var;
1875  break;
1876  }
1877  case PLPGSQL_TTYPE_REC:
1878  {
1879  /* Composite type -- build a record variable */
1880  PLpgSQL_rec *rec;
1881 
1882  rec = plpgsql_build_record(refname, lineno,
1883  dtype, dtype->typoid,
1884  add2namespace);
1885  result = (PLpgSQL_variable *) rec;
1886  break;
1887  }
1888  case PLPGSQL_TTYPE_PSEUDO:
1889  ereport(ERROR,
1890  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1891  errmsg("variable \"%s\" has pseudo-type %s",
1892  refname, format_type_be(dtype->typoid))));
1893  result = NULL; /* keep compiler quiet */
1894  break;
1895  default:
1896  elog(ERROR, "unrecognized ttype: %d", dtype->ttype);
1897  result = NULL; /* keep compiler quiet */
1898  break;
1899  }
1900 
1901  return result;
1902 }
char * refname
Definition: plpgsql.h:303
PLpgSQL_rec * plpgsql_build_record(const char *refname, int lineno, PLpgSQL_type *dtype, Oid rectypeid, bool add2namespace)
Definition: pl_comp.c:1908
PLpgSQL_datum_type dtype
Definition: plpgsql.h:301
char * pstrdup(const char *in)
Definition: mcxt.c:1186
PLpgSQL_type * datatype
Definition: plpgsql.h:310
void plpgsql_ns_additem(PLpgSQL_nsitem_type itemtype, int itemno, const char *name)
Definition: pl_funcs.c:92
PLpgSQL_type_type ttype
Definition: plpgsql.h:203
int errcode(int sqlerrcode)
Definition: elog.c:610
char * format_type_be(Oid type_oid)
Definition: format_type.c:327
void plpgsql_adddatum(PLpgSQL_datum *newdatum)
Definition: pl_comp.c:2291
#define ERROR
Definition: elog.h:43
bool freeval
Definition: plpgsql.h:325
void * palloc0(Size size)
Definition: mcxt.c:980
Datum value
Definition: plpgsql.h:323
#define ereport(elevel,...)
Definition: elog.h:144
int lineno
Definition: plpgsql.h:304
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define elog(elevel,...)
Definition: elog.h:214
bool isnull
Definition: plpgsql.h:324
Oid typoid
Definition: plpgsql.h:202

◆ plpgsql_compile()

PLpgSQL_function* plpgsql_compile ( FunctionCallInfo  fcinfo,
bool  forValidator 
)

Definition at line 135 of file pl_comp.c.

References compute_function_hashkey(), delete_function(), do_compile(), elog, ERROR, FunctionCallInfoBaseData::flinfo, FmgrInfo::fn_extra, FmgrInfo::fn_oid, PLpgSQL_function::fn_tid, PLpgSQL_function::fn_xmin, plpgsql_hashent::function, GETSTRUCT, HeapTupleHeaderGetRawXmin, HeapTupleIsValid, ItemPointerEquals(), ObjectIdGetDatum, plpgsql_HashTableLookup(), PROCOID, ReleaseSysCache(), SearchSysCache1(), HeapTupleData::t_data, HeapTupleData::t_self, and PLpgSQL_function::use_count.

Referenced by plpgsql_call_handler(), and plpgsql_validator().

136 {
137  Oid funcOid = fcinfo->flinfo->fn_oid;
138  HeapTuple procTup;
139  Form_pg_proc procStruct;
140  PLpgSQL_function *function;
141  PLpgSQL_func_hashkey hashkey;
142  bool function_valid = false;
143  bool hashkey_valid = false;
144 
145  /*
146  * Lookup the pg_proc tuple by Oid; we'll need it in any case
147  */
148  procTup = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcOid));
149  if (!HeapTupleIsValid(procTup))
150  elog(ERROR, "cache lookup failed for function %u", funcOid);
151  procStruct = (Form_pg_proc) GETSTRUCT(procTup);
152 
153  /*
154  * See if there's already a cache entry for the current FmgrInfo. If not,
155  * try to find one in the hash table.
156  */
157  function = (PLpgSQL_function *) fcinfo->flinfo->fn_extra;
158 
159 recheck:
160  if (!function)
161  {
162  /* Compute hashkey using function signature and actual arg types */
163  compute_function_hashkey(fcinfo, procStruct, &hashkey, forValidator);
164  hashkey_valid = true;
165 
166  /* And do the lookup */
167  function = plpgsql_HashTableLookup(&hashkey);
168  }
169 
170  if (function)
171  {
172  /* We have a compiled function, but is it still valid? */
173  if (function->fn_xmin == HeapTupleHeaderGetRawXmin(procTup->t_data) &&
174  ItemPointerEquals(&function->fn_tid, &procTup->t_self))
175  function_valid = true;
176  else
177  {
178  /*
179  * Nope, so remove it from hashtable and try to drop associated
180  * storage (if not done already).
181  */
182  delete_function(function);
183 
184  /*
185  * If the function isn't in active use then we can overwrite the
186  * func struct with new data, allowing any other existing fn_extra
187  * pointers to make use of the new definition on their next use.
188  * If it is in use then just leave it alone and make a new one.
189  * (The active invocations will run to completion using the
190  * previous definition, and then the cache entry will just be
191  * leaked; doesn't seem worth adding code to clean it up, given
192  * what a corner case this is.)
193  *
194  * If we found the function struct via fn_extra then it's possible
195  * a replacement has already been made, so go back and recheck the
196  * hashtable.
197  */
198  if (function->use_count != 0)
199  {
200  function = NULL;
201  if (!hashkey_valid)
202  goto recheck;
203  }
204  }
205  }
206 
207  /*
208  * If the function wasn't found or was out-of-date, we have to compile it
209  */
210  if (!function_valid)
211  {
212  /*
213  * Calculate hashkey if we didn't already; we'll need it to store the
214  * completed function.
215  */
216  if (!hashkey_valid)
217  compute_function_hashkey(fcinfo, procStruct, &hashkey,
218  forValidator);
219 
220  /*
221  * Do the hard part.
222  */
223  function = do_compile(fcinfo, procTup, function,
224  &hashkey, forValidator);
225  }
226 
227  ReleaseSysCache(procTup);
228 
229  /*
230  * Save pointer in FmgrInfo to avoid search on subsequent calls
231  */
232  fcinfo->flinfo->fn_extra = (void *) function;
233 
234  /*
235  * Finally return the compiled function
236  */
237  return function;
238 }
static PLpgSQL_function * do_compile(FunctionCallInfo fcinfo, HeapTuple procTup, PLpgSQL_function *function, PLpgSQL_func_hashkey *hashkey, bool forValidator)
Definition: pl_comp.c:263
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
static void compute_function_hashkey(FunctionCallInfo fcinfo, Form_pg_proc procStruct, PLpgSQL_func_hashkey *hashkey, bool forValidator)
Definition: pl_comp.c:2410
unsigned int Oid
Definition: postgres_ext.h:31
HeapTupleHeader t_data
Definition: htup.h:68
static void delete_function(PLpgSQL_function *func)
Definition: pl_comp.c:2532
static PLpgSQL_function * plpgsql_HashTableLookup(PLpgSQL_func_hashkey *func_key)
Definition: pl_comp.c:2561
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
ItemPointerData t_self
Definition: htup.h:65
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1116
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1164
FmgrInfo * flinfo
Definition: fmgr.h:87
FormData_pg_proc * Form_pg_proc
Definition: pg_proc.h:133
Oid fn_oid
Definition: fmgr.h:59
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define HeapTupleHeaderGetRawXmin(tup)
Definition: htup_details.h:308
void * fn_extra
Definition: fmgr.h:64
bool ItemPointerEquals(ItemPointer pointer1, ItemPointer pointer2)
Definition: itemptr.c:29
on_exit_nicely_callback function
#define elog(elevel,...)
Definition: elog.h:214

◆ plpgsql_compile_inline()

PLpgSQL_function* plpgsql_compile_inline ( char *  proc_source)

Definition at line 843 of file pl_comp.c.

References add_dummy_return(), ALLOCSET_DEFAULT_SIZES, AllocSetContextCreate, ErrorContextCallback::arg, ErrorContextCallback::callback, check_function_bodies, CurrentMemoryContext, PLpgSQL_variable::dno, elog, ERROR, error_context_stack, PLpgSQL_function::fn_rettype, plpgsql_hashent::function, InvalidOid, MemoryContextSwitchTo(), palloc0(), plpgsql_build_datatype(), plpgsql_build_variable(), plpgsql_check_syntax, plpgsql_compile_error_callback(), plpgsql_DumpExecTree, plpgsql_error_funcname, plpgsql_finish_datums(), PLPGSQL_LABEL_BLOCK, PLPGSQL_NOT_TRIGGER, plpgsql_ns_init(), plpgsql_ns_push(), plpgsql_parse_result, plpgsql_print_strict_params, plpgsql_scanner_finish(), plpgsql_scanner_init(), plpgsql_start_datums(), plpgsql_variable_conflict, plpgsql_yyparse(), ErrorContextCallback::previous, and pstrdup().

Referenced by plpgsql_inline_handler().

844 {
845  char *func_name = "inline_code_block";
846  PLpgSQL_function *function;
847  ErrorContextCallback plerrcontext;
848  PLpgSQL_variable *var;
849  int parse_rc;
850  MemoryContext func_cxt;
851 
852  /*
853  * Setup the scanner input and error info. We assume that this function
854  * cannot be invoked recursively, so there's no need to save and restore
855  * the static variables used here.
856  */
857  plpgsql_scanner_init(proc_source);
858 
859  plpgsql_error_funcname = func_name;
860 
861  /*
862  * Setup error traceback support for ereport()
863  */
865  plerrcontext.arg = proc_source;
866  plerrcontext.previous = error_context_stack;
867  error_context_stack = &plerrcontext;
868 
869  /* Do extra syntax checking if check_function_bodies is on */
871 
872  /* Function struct does not live past current statement */
873  function = (PLpgSQL_function *) palloc0(sizeof(PLpgSQL_function));
874 
875  plpgsql_curr_compile = function;
876 
877  /*
878  * All the rest of the compile-time storage (e.g. parse tree) is kept in
879  * its own memory context, so it can be reclaimed easily.
880  */
882  "PL/pgSQL inline code context",
885 
886  function->fn_signature = pstrdup(func_name);
887  function->fn_is_trigger = PLPGSQL_NOT_TRIGGER;
888  function->fn_input_collation = InvalidOid;
889  function->fn_cxt = func_cxt;
890  function->out_param_varno = -1; /* set up for no OUT param */
891  function->resolve_option = plpgsql_variable_conflict;
892  function->print_strict_params = plpgsql_print_strict_params;
893 
894  /*
895  * don't do extra validation for inline code as we don't want to add spam
896  * at runtime
897  */
898  function->extra_warnings = 0;
899  function->extra_errors = 0;
900 
901  function->nstatements = 0;
902 
903  plpgsql_ns_init();
905  plpgsql_DumpExecTree = false;
907 
908  /* Set up as though in a function returning VOID */
909  function->fn_rettype = VOIDOID;
910  function->fn_retset = false;
911  function->fn_retistuple = false;
912  function->fn_retisdomain = false;
913  function->fn_prokind = PROKIND_FUNCTION;
914  /* a bit of hardwired knowledge about type VOID here */
915  function->fn_retbyval = true;
916  function->fn_rettyplen = sizeof(int32);
917 
918  /*
919  * Remember if function is STABLE/IMMUTABLE. XXX would it be better to
920  * set this true inside a read-only transaction? Not clear.
921  */
922  function->fn_readonly = false;
923 
924  /*
925  * Create the magic FOUND variable.
926  */
927  var = plpgsql_build_variable("found", 0,
928  plpgsql_build_datatype(BOOLOID,
929  -1,
930  InvalidOid,
931  NULL),
932  true);
933  function->found_varno = var->dno;
934 
935  /*
936  * Now parse the function's text
937  */
938  parse_rc = plpgsql_yyparse();
939  if (parse_rc != 0)
940  elog(ERROR, "plpgsql parser returned %d", parse_rc);
941  function->action = plpgsql_parse_result;
942 
944 
945  /*
946  * If it returns VOID (always true at the moment), we allow control to
947  * fall off the end without an explicit RETURN statement.
948  */
949  if (function->fn_rettype == VOIDOID)
950  add_dummy_return(function);
951 
952  /*
953  * Complete the function's info
954  */
955  function->fn_nargs = 0;
956 
957  plpgsql_finish_datums(function);
958 
959  /*
960  * Pop the error context stack
961  */
962  error_context_stack = plerrcontext.previous;
963  plpgsql_error_funcname = NULL;
964 
965  plpgsql_check_syntax = false;
966 
969  return function;
970 }
int plpgsql_yyparse(void)
#define AllocSetContextCreate
Definition: memutils.h:170
char * pstrdup(const char *in)
Definition: mcxt.c:1186
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
bool check_function_bodies
Definition: guc.c:533
void(* callback)(void *arg)
Definition: elog.h:229
struct ErrorContextCallback * previous
Definition: elog.h:228
static void plpgsql_start_datums(void)
Definition: pl_comp.c:2274
signed int int32
Definition: c.h:355
ErrorContextCallback * error_context_stack
Definition: elog.c:92
void plpgsql_scanner_finish(void)
Definition: pl_scanner.c:613
bool plpgsql_check_syntax
Definition: pl_comp.c:50
#define ERROR
Definition: elog.h:43
char * plpgsql_error_funcname
Definition: pl_comp.c:48
bool plpgsql_DumpExecTree
Definition: pl_comp.c:49
#define ALLOCSET_DEFAULT_SIZES
Definition: memutils.h:192
static void add_dummy_return(PLpgSQL_function *function)
Definition: pl_comp.c:1031
MemoryContext CurrentMemoryContext
Definition: mcxt.c:38
void plpgsql_ns_init(void)
Definition: pl_funcs.c:43
void * palloc0(Size size)
Definition: mcxt.c:980
PLpgSQL_type * plpgsql_build_datatype(Oid typeOid, int32 typmod, Oid collation, TypeName *origtypname)
Definition: pl_comp.c:2049
#define InvalidOid
Definition: postgres_ext.h:36
bool plpgsql_print_strict_params
Definition: pl_handler.c:46
static void plpgsql_compile_error_callback(void *arg)
Definition: pl_comp.c:979
int plpgsql_variable_conflict
Definition: pl_handler.c:44
void plpgsql_ns_push(const char *label, PLpgSQL_label_type label_type)
Definition: pl_funcs.c:54
PLpgSQL_stmt_block * plpgsql_parse_result
Definition: pl_comp.c:41
PLpgSQL_variable * plpgsql_build_variable(const char *refname, int lineno, PLpgSQL_type *dtype, bool add2namespace)
Definition: pl_comp.c:1845
on_exit_nicely_callback function
void plpgsql_scanner_init(const char *str)
Definition: pl_scanner.c:586
static void plpgsql_finish_datums(PLpgSQL_function *function)
Definition: pl_comp.c:2308
#define elog(elevel,...)
Definition: elog.h:214
MemoryContext plpgsql_compile_tmp_cxt
Definition: pl_comp.c:55
PLpgSQL_function * plpgsql_curr_compile
Definition: pl_comp.c:52

◆ plpgsql_dumptree()

void plpgsql_dumptree ( PLpgSQL_function func)

Definition at line 1624 of file pl_funcs.c.

References PLpgSQL_function::action, PLpgSQL_type::atttypmod, PLpgSQL_var::cursor_explicit_argrow, PLpgSQL_var::cursor_explicit_expr, PLpgSQL_var::datatype, PLpgSQL_function::datums, PLpgSQL_var::default_val, PLpgSQL_datum::dtype, PLpgSQL_arrayelem::dtype, dump_block(), dump_expr(), dump_indent, PLpgSQL_row::fieldnames, PLpgSQL_function::fn_signature, i, PLpgSQL_var::isconst, PLpgSQL_stmt_block::lineno, PLpgSQL_function::ndatums, PLpgSQL_row::nfields, PLpgSQL_var::notnull, PLPGSQL_DTYPE_ARRAYELEM, PLPGSQL_DTYPE_PROMISE, PLPGSQL_DTYPE_REC, PLPGSQL_DTYPE_RECFIELD, PLPGSQL_DTYPE_ROW, PLPGSQL_DTYPE_VAR, PLPGSQL_PROMISE_NONE, printf, PLpgSQL_var::promise, PLpgSQL_var::refname, PLpgSQL_row::refname, generate_unaccent_rules::stdout, PLpgSQL_type::typname, PLpgSQL_type::typoid, and PLpgSQL_row::varnos.

Referenced by do_compile().

1625 {
1626  int i;
1627  PLpgSQL_datum *d;
1628 
1629  printf("\nExecution tree of successfully compiled PL/pgSQL function %s:\n",
1630  func->fn_signature);
1631 
1632  printf("\nFunction's data area:\n");
1633  for (i = 0; i < func->ndatums; i++)
1634  {
1635  d = func->datums[i];
1636 
1637  printf(" entry %d: ", i);
1638  switch (d->dtype)
1639  {
1640  case PLPGSQL_DTYPE_VAR:
1641  case PLPGSQL_DTYPE_PROMISE:
1642  {
1643  PLpgSQL_var *var = (PLpgSQL_var *) d;
1644 
1645  printf("VAR %-16s type %s (typoid %u) atttypmod %d\n",
1646  var->refname, var->datatype->typname,
1647  var->datatype->typoid,
1648  var->datatype->atttypmod);
1649  if (var->isconst)
1650  printf(" CONSTANT\n");
1651  if (var->notnull)
1652  printf(" NOT NULL\n");
1653  if (var->default_val != NULL)
1654  {
1655  printf(" DEFAULT ");
1656  dump_expr(var->default_val);
1657  printf("\n");
1658  }
1659  if (var->cursor_explicit_expr != NULL)
1660  {
1661  if (var->cursor_explicit_argrow >= 0)
1662  printf(" CURSOR argument row %d\n", var->cursor_explicit_argrow);
1663 
1664  printf(" CURSOR IS ");
1666  printf("\n");
1667  }
1668  if (var->promise != PLPGSQL_PROMISE_NONE)
1669  printf(" PROMISE %d\n",
1670  (int) var->promise);
1671  }
1672  break;
1673  case PLPGSQL_DTYPE_ROW:
1674  {
1675  PLpgSQL_row *row = (PLpgSQL_row *) d;
1676  int i;
1677 
1678  printf("ROW %-16s fields", row->refname);
1679  for (i = 0; i < row->nfields; i++)
1680  {
1681  printf(" %s=var %d", row->fieldnames[i],
1682  row->varnos[i]);
1683  }
1684  printf("\n");
1685  }
1686  break;
1687  case PLPGSQL_DTYPE_REC:
1688  printf("REC %-16s typoid %u\n",
1689  ((PLpgSQL_rec *) d)->refname,
1690  ((PLpgSQL_rec *) d)->rectypeid);
1691  if (((PLpgSQL_rec *) d)->isconst)
1692  printf(" CONSTANT\n");
1693  if (((PLpgSQL_rec *) d)->notnull)
1694  printf(" NOT NULL\n");
1695  if (((PLpgSQL_rec *) d)->default_val != NULL)
1696  {
1697  printf(" DEFAULT ");
1698  dump_expr(((PLpgSQL_rec *) d)->default_val);
1699  printf("\n");
1700  }
1701  break;
1703  printf("RECFIELD %-16s of REC %d\n",
1704  ((PLpgSQL_recfield *) d)->fieldname,
1705  ((PLpgSQL_recfield *) d)->recparentno);
1706  break;
1708  printf("ARRAYELEM of VAR %d subscript ",
1709  ((PLpgSQL_arrayelem *) d)->arrayparentno);
1710  dump_expr(((PLpgSQL_arrayelem *) d)->subscript);
1711  printf("\n");
1712  break;
1713  default:
1714  printf("??? unknown data type %d\n", d->dtype);
1715  }
1716  }
1717  printf("\nFunction's statements:\n");
1718 
1719  dump_indent = 0;
1720  printf("%3d:", func->action->lineno);
1721  dump_block(func->action);
1722  printf("\nEnd of execution tree of function %s\n\n", func->fn_signature);
1723  fflush(stdout);
1724 }
PLpgSQL_promise_type promise
Definition: plpgsql.h:332
PLpgSQL_datum ** datums
Definition: plpgsql.h:1031
char * refname
Definition: plpgsql.h:357
char * refname
Definition: plpgsql.h:303
PLpgSQL_stmt_block * action
Definition: plpgsql.h:1035
PLpgSQL_expr * cursor_explicit_expr
Definition: plpgsql.h:317
PLpgSQL_type * datatype
Definition: plpgsql.h:310
bool isconst
Definition: plpgsql.h:305
#define printf(...)
Definition: port.h:199
PLpgSQL_datum_type dtype
Definition: plpgsql.h:267
bool notnull
Definition: plpgsql.h:306
int cursor_explicit_argrow
Definition: plpgsql.h:318
char ** fieldnames
Definition: plpgsql.h:372
PLpgSQL_expr * default_val
Definition: plpgsql.h:307
int * varnos
Definition: plpgsql.h:373
PLpgSQL_datum_type dtype
Definition: plpgsql.h:412
int nfields
Definition: plpgsql.h:371
static int dump_indent
Definition: pl_funcs.c:799
char * fn_signature
Definition: plpgsql.h:993
char * typname
Definition: plpgsql.h:201
static void dump_block(PLpgSQL_stmt_block *block)
Definition: pl_funcs.c:952
int32 atttypmod
Definition: plpgsql.h:209
static void dump_expr(PLpgSQL_expr *expr)
Definition: pl_funcs.c:1618
int i
Oid typoid
Definition: plpgsql.h:202

◆ plpgsql_exec_event_trigger()

void plpgsql_exec_event_trigger ( PLpgSQL_function func,
EventTriggerData trigdata 
)

Definition at line 1150 of file pl_exec.c.

References PLpgSQL_function::action, ErrorContextCallback::arg, ErrorContextCallback::callback, copy_plpgsql_datums(), ereport, PLpgSQL_execstate::err_stmt, PLpgSQL_execstate::err_text, errcode(), errmsg(), ERROR, error_context_stack, PLpgSQL_execstate::evtrigdata, exec_eval_cleanup(), exec_stmt(), PLpgSQL_plugin::func_beg, PLpgSQL_plugin::func_end, gettext_noop, plpgsql_destroy_econtext(), plpgsql_estate_setup(), plpgsql_exec_error_callback(), plpgsql_plugin_ptr, PLPGSQL_RC_RETURN, and ErrorContextCallback::previous.

Referenced by plpgsql_call_handler().

1151 {
1152  PLpgSQL_execstate estate;
1153  ErrorContextCallback plerrcontext;
1154  int rc;
1155 
1156  /*
1157  * Setup the execution state
1158  */
1159  plpgsql_estate_setup(&estate, func, NULL, NULL, NULL);
1160  estate.evtrigdata = trigdata;
1161 
1162  /*
1163  * Setup error traceback support for ereport()
1164  */
1165  plerrcontext.callback = plpgsql_exec_error_callback;
1166  plerrcontext.arg = &estate;
1167  plerrcontext.previous = error_context_stack;
1168  error_context_stack = &plerrcontext;
1169 
1170  /*
1171  * Make local execution copies of all the datums
1172  */
1173  estate.err_text = gettext_noop("during initialization of execution state");
1174  copy_plpgsql_datums(&estate, func);
1175 
1176  /*
1177  * Let the instrumentation plugin peek at this function
1178  */
1179  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_beg)
1180  ((*plpgsql_plugin_ptr)->func_beg) (&estate, func);
1181 
1182  /*
1183  * Now call the toplevel block of statements
1184  */
1185  estate.err_text = NULL;
1186  estate.err_stmt = (PLpgSQL_stmt *) (func->action);
1187  rc = exec_stmt(&estate, (PLpgSQL_stmt *) func->action);
1188  if (rc != PLPGSQL_RC_RETURN)
1189  {
1190  estate.err_stmt = NULL;
1191  estate.err_text = NULL;
1192  ereport(ERROR,
1193  (errcode(ERRCODE_S_R_E_FUNCTION_EXECUTED_NO_RETURN_STATEMENT),
1194  errmsg("control reached end of trigger procedure without RETURN")));
1195  }
1196 
1197  estate.err_stmt = NULL;
1198  estate.err_text = gettext_noop("during function exit");
1199 
1200  /*
1201  * Let the instrumentation plugin peek at this function
1202  */
1203  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_end)
1204  ((*plpgsql_plugin_ptr)->func_end) (&estate, func);
1205 
1206  /* Clean up any leftover temporary memory */
1207  plpgsql_destroy_econtext(&estate);
1208  exec_eval_cleanup(&estate);
1209  /* stmt_mcontext will be destroyed when function's main context is */
1210 
1211  /*
1212  * Pop the error context stack
1213  */
1214  error_context_stack = plerrcontext.previous;
1215 }
static int exec_stmt(PLpgSQL_execstate *estate, PLpgSQL_stmt *stmt)
Definition: pl_exec.c:1959
PLpgSQL_stmt * err_stmt
Definition: plpgsql.h:1112
PLpgSQL_stmt_block * action
Definition: plpgsql.h:1035
static void plpgsql_exec_error_callback(void *arg)
Definition: pl_exec.c:1221
#define gettext_noop(x)
Definition: c.h:1160
int errcode(int sqlerrcode)
Definition: elog.c:610
static void exec_eval_cleanup(PLpgSQL_execstate *estate)
Definition: pl_exec.c:4046
void(* callback)(void *arg)
Definition: elog.h:229
struct ErrorContextCallback * previous
Definition: elog.h:228
static void copy_plpgsql_datums(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: pl_exec.c:1279
ErrorContextCallback * error_context_stack
Definition: elog.c:92
#define ERROR
Definition: elog.h:43
static void plpgsql_destroy_econtext(PLpgSQL_execstate *estate)
Definition: pl_exec.c:8389
PLpgSQL_plugin ** plpgsql_plugin_ptr
Definition: pl_handler.c:56
void(* func_beg)(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: plpgsql.h:1152
EventTriggerData * evtrigdata
Definition: plpgsql.h:1050
const char * err_text
Definition: plpgsql.h:1113
#define ereport(elevel,...)
Definition: elog.h:144
void(* func_end)(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: plpgsql.h:1153
static void plpgsql_estate_setup(PLpgSQL_execstate *estate, PLpgSQL_function *func, ReturnSetInfo *rsi, EState *simple_eval_estate, ResourceOwner simple_eval_resowner)
Definition: pl_exec.c:3896
int errmsg(const char *fmt,...)
Definition: elog.c:824

◆ plpgsql_exec_function()

Datum plpgsql_exec_function ( PLpgSQL_function func,
FunctionCallInfo  fcinfo,
EState simple_eval_estate,
ResourceOwner  simple_eval_resowner,
bool  atomic 
)

Definition at line 470 of file pl_exec.c.

References PLpgSQL_function::action, ReturnSetInfo::allowedModes, ErrorContextCallback::arg, FunctionCallInfoBaseData::args, assign_simple_var(), PLpgSQL_execstate::atomic, ErrorContextCallback::callback, coerce_function_result_tuple(), copy_plpgsql_datums(), CreateTupleDescCopy(), PLpgSQL_var::datatype, PLpgSQL_execstate::datum_context, DatumGetPointer, PLpgSQL_function::datums, PLpgSQL_execstate::datums, domain_check(), PLpgSQL_datum::dtype, elog, ereport, PLpgSQL_execstate::err_stmt, PLpgSQL_execstate::err_text, errcode(), errmsg(), ERROR, error_context_stack, exec_cast_value(), exec_eval_cleanup(), exec_move_row(), exec_move_row_from_datum(), exec_set_found(), exec_stmt(), expand_array(), PLpgSQL_function::fn_argvarnos, PLpgSQL_function::fn_nargs, PLpgSQL_function::fn_retbyval, PLpgSQL_function::fn_retisdomain, PLpgSQL_function::fn_rettype, PLpgSQL_function::fn_rettyplen, PLpgSQL_plugin::func_beg, PLpgSQL_plugin::func_end, get_call_result_type(), gettext_noop, i, IsA, FunctionCallInfoBaseData::isnull, PLpgSQL_var::isnull, NullableDatum::isnull, MemoryContextSwitchTo(), plpgsql_destroy_econtext(), PLPGSQL_DTYPE_REC, PLPGSQL_DTYPE_VAR, plpgsql_estate_setup(), plpgsql_exec_error_callback(), plpgsql_plugin_ptr, PLPGSQL_RC_RETURN, ErrorContextCallback::previous, FunctionCallInfoBaseData::resultinfo, PLpgSQL_execstate::retisnull, PLpgSQL_execstate::retisset, PLpgSQL_execstate::retistuple, PLpgSQL_execstate::rettype, ReturnSetInfo::returnMode, PLpgSQL_execstate::retval, PLpgSQL_execstate::rsi, ReturnSetInfo::setDesc, ReturnSetInfo::setResult, SFRM_Materialize, SPI_datumTransfer(), TransferExpandedObject(), PLpgSQL_execstate::tuple_store, PLpgSQL_execstate::tuple_store_cxt, PLpgSQL_execstate::tuple_store_desc, TYPEFUNC_COMPOSITE, TYPEFUNC_COMPOSITE_DOMAIN, TYPEFUNC_RECORD, PLpgSQL_type::typisarray, PLpgSQL_var::value, NullableDatum::value, VARATT_IS_EXTERNAL_EXPANDED_RO, and VARATT_IS_EXTERNAL_EXPANDED_RW.

Referenced by plpgsql_call_handler(), and plpgsql_inline_handler().

474 {
475  PLpgSQL_execstate estate;
476  ErrorContextCallback plerrcontext;
477  int i;
478  int rc;
479 
480  /*
481  * Setup the execution state
482  */
483  plpgsql_estate_setup(&estate, func, (ReturnSetInfo *) fcinfo->resultinfo,
484  simple_eval_estate, simple_eval_resowner);
485  estate.atomic = atomic;
486 
487  /*
488  * Setup error traceback support for ereport()
489  */
490  plerrcontext.callback = plpgsql_exec_error_callback;
491  plerrcontext.arg = &estate;
492  plerrcontext.previous = error_context_stack;
493  error_context_stack = &plerrcontext;
494 
495  /*
496  * Make local execution copies of all the datums
497  */
498  estate.err_text = gettext_noop("during initialization of execution state");
499  copy_plpgsql_datums(&estate, func);
500 
501  /*
502  * Store the actual call argument values into the appropriate variables
503  */
504  estate.err_text = gettext_noop("while storing call arguments into local variables");
505  for (i = 0; i < func->fn_nargs; i++)
506  {
507  int n = func->fn_argvarnos[i];
508 
509  switch (estate.datums[n]->dtype)
510  {
511  case PLPGSQL_DTYPE_VAR:
512  {
513  PLpgSQL_var *var = (PLpgSQL_var *) estate.datums[n];
514 
515  assign_simple_var(&estate, var,
516  fcinfo->args[i].value,
517  fcinfo->args[i].isnull,
518  false);
519 
520  /*
521  * Force any array-valued parameter to be stored in
522  * expanded form in our local variable, in hopes of
523  * improving efficiency of uses of the variable. (This is
524  * a hack, really: why only arrays? Need more thought
525  * about which cases are likely to win. See also
526  * typisarray-specific heuristic in exec_assign_value.)
527  *
528  * Special cases: If passed a R/W expanded pointer, assume
529  * we can commandeer the object rather than having to copy
530  * it. If passed a R/O expanded pointer, just keep it as
531  * the value of the variable for the moment. (We'll force
532  * it to R/W if the variable gets modified, but that may
533  * very well never happen.)
534  */
535  if (!var->isnull && var->datatype->typisarray)
536  {
538  {
539  /* take ownership of R/W object */
540  assign_simple_var(&estate, var,
542  estate.datum_context),
543  false,
544  true);
545  }
547  {
548  /* R/O pointer, keep it as-is until assigned to */
549  }
550  else
551  {
552  /* flat array, so force to expanded form */
553  assign_simple_var(&estate, var,
554  expand_array(var->value,
555  estate.datum_context,
556  NULL),
557  false,
558  true);
559  }
560  }
561  }
562  break;
563 
564  case PLPGSQL_DTYPE_REC:
565  {
566  PLpgSQL_rec *rec = (PLpgSQL_rec *) estate.datums[n];
567 
568  if (!fcinfo->args[i].isnull)
569  {
570  /* Assign row value from composite datum */
571  exec_move_row_from_datum(&estate,
572  (PLpgSQL_variable *) rec,
573  fcinfo->args[i].value);
574  }
575  else
576  {
577  /* If arg is null, set variable to null */
578  exec_move_row(&estate, (PLpgSQL_variable *) rec,
579  NULL, NULL);
580  }
581  /* clean up after exec_move_row() */
582  exec_eval_cleanup(&estate);
583  }
584  break;
585 
586  default:
587  /* Anything else should not be an argument variable */
588  elog(ERROR, "unrecognized dtype: %d", func->datums[i]->dtype);
589  }
590  }
591 
592  estate.err_text = gettext_noop("during function entry");
593 
594  /*
595  * Set the magic variable FOUND to false
596  */
597  exec_set_found(&estate, false);
598 
599  /*
600  * Let the instrumentation plugin peek at this function
601  */
602  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_beg)
603  ((*plpgsql_plugin_ptr)->func_beg) (&estate, func);
604 
605  /*
606  * Now call the toplevel block of statements
607  */
608  estate.err_text = NULL;
609  estate.err_stmt = (PLpgSQL_stmt *) (func->action);
610  rc = exec_stmt(&estate, (PLpgSQL_stmt *) func->action);
611  if (rc != PLPGSQL_RC_RETURN)
612  {
613  estate.err_stmt = NULL;
614  estate.err_text = NULL;
615  ereport(ERROR,
616  (errcode(ERRCODE_S_R_E_FUNCTION_EXECUTED_NO_RETURN_STATEMENT),
617  errmsg("control reached end of function without RETURN")));
618  }
619 
620  /*
621  * We got a return value - process it
622  */
623  estate.err_stmt = NULL;
624  estate.err_text = gettext_noop("while casting return value to function's return type");
625 
626  fcinfo->isnull = estate.retisnull;
627 
628  if (estate.retisset)
629  {
630  ReturnSetInfo *rsi = estate.rsi;
631 
632  /* Check caller can handle a set result */
633  if (!rsi || !IsA(rsi, ReturnSetInfo) ||
634  (rsi->allowedModes & SFRM_Materialize) == 0)
635  ereport(ERROR,
636  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
637  errmsg("set-valued function called in context that cannot accept a set")));
639 
640  /* If we produced any tuples, send back the result */
641  if (estate.tuple_store)
642  {
643  MemoryContext oldcxt;
644 
645  rsi->setResult = estate.tuple_store;
646  oldcxt = MemoryContextSwitchTo(estate.tuple_store_cxt);
648  MemoryContextSwitchTo(oldcxt);
649  }
650  estate.retval = (Datum) 0;
651  fcinfo->isnull = true;
652  }
653  else if (!estate.retisnull)
654  {
655  /*
656  * Cast result value to function's declared result type, and copy it
657  * out to the upper executor memory context. We must treat tuple
658  * results specially in order to deal with cases like rowtypes
659  * involving dropped columns.
660  */
661  if (estate.retistuple)
662  {
663  /* Don't need coercion if rowtype is known to match */
664  if (func->fn_rettype == estate.rettype &&
665  func->fn_rettype != RECORDOID)
666  {
667  /*
668  * Copy the tuple result into upper executor memory context.
669  * However, if we have a R/W expanded datum, we can just
670  * transfer its ownership out to the upper context.
671  */
672  estate.retval = SPI_datumTransfer(estate.retval,
673  false,
674  -1);
675  }
676  else
677  {
678  /*
679  * Need to look up the expected result type. XXX would be
680  * better to cache the tupdesc instead of repeating
681  * get_call_result_type(), but the only easy place to save it
682  * is in the PLpgSQL_function struct, and that's too
683  * long-lived: composite types could change during the
684  * existence of a PLpgSQL_function.
685  */
686  Oid resultTypeId;
687  TupleDesc tupdesc;
688 
689  switch (get_call_result_type(fcinfo, &resultTypeId, &tupdesc))
690  {
691  case TYPEFUNC_COMPOSITE:
692  /* got the expected result rowtype, now coerce it */
693  coerce_function_result_tuple(&estate, tupdesc);
694  break;
696  /* got the expected result rowtype, now coerce it */
697  coerce_function_result_tuple(&estate, tupdesc);
698  /* and check domain constraints */
699  /* XXX allowing caching here would be good, too */
700  domain_check(estate.retval, false, resultTypeId,
701  NULL, NULL);
702  break;
703  case TYPEFUNC_RECORD:
704 
705  /*
706  * Failed to determine actual type of RECORD. We
707  * could raise an error here, but what this means in
708  * practice is that the caller is expecting any old
709  * generic rowtype, so we don't really need to be
710  * restrictive. Pass back the generated result as-is.
711  */
712  estate.retval = SPI_datumTransfer(estate.retval,
713  false,
714  -1);
715  break;
716  default:
717  /* shouldn't get here if retistuple is true ... */
718  elog(ERROR, "return type must be a row type");
719  break;
720  }
721  }
722  }
723  else
724  {
725  /* Scalar case: use exec_cast_value */
726  estate.retval = exec_cast_value(&estate,
727  estate.retval,
728  &fcinfo->isnull,
729  estate.rettype,
730  -1,
731  func->fn_rettype,
732  -1);
733 
734  /*
735  * If the function's return type isn't by value, copy the value
736  * into upper executor memory context. However, if we have a R/W
737  * expanded datum, we can just transfer its ownership out to the
738  * upper executor context.
739  */
740  if (!fcinfo->isnull && !func->fn_retbyval)
741  estate.retval = SPI_datumTransfer(estate.retval,
742  false,
743  func->fn_rettyplen);
744  }
745  }
746  else
747  {
748  /*
749  * We're returning a NULL, which normally requires no conversion work
750  * regardless of datatypes. But, if we are casting it to a domain
751  * return type, we'd better check that the domain's constraints pass.
752  */
753  if (func->fn_retisdomain)
754  estate.retval = exec_cast_value(&estate,
755  estate.retval,
756  &fcinfo->isnull,
757  estate.rettype,
758  -1,
759  func->fn_rettype,
760  -1);
761  }
762 
763  estate.err_text = gettext_noop("during function exit");
764 
765  /*
766  * Let the instrumentation plugin peek at this function
767  */
768  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_end)
769  ((*plpgsql_plugin_ptr)->func_end) (&estate, func);
770 
771  /* Clean up any leftover temporary memory */
772  plpgsql_destroy_econtext(&estate);
773  exec_eval_cleanup(&estate);
774  /* stmt_mcontext will be destroyed when function's main context is */
775 
776  /*
777  * Pop the error context stack
778  */
779  error_context_stack = plerrcontext.previous;
780 
781  /*
782  * Return the function's result
783  */
784  return estate.retval;
785 }
static int exec_stmt(PLpgSQL_execstate *estate, PLpgSQL_stmt *stmt)
Definition: pl_exec.c:1959
PLpgSQL_datum ** datums
Definition: plpgsql.h:1031
int fn_argvarnos[FUNC_MAX_ARGS]
Definition: plpgsql.h:1012
TupleDesc CreateTupleDescCopy(TupleDesc tupdesc)
Definition: tupdesc.c:110
#define IsA(nodeptr, _type_)
Definition: nodes.h:580
TypeFuncClass get_call_result_type(FunctionCallInfo fcinfo, Oid *resultTypeId, TupleDesc *resultTupleDesc)
Definition: funcapi.c:205
PLpgSQL_stmt * err_stmt
Definition: plpgsql.h:1112
PLpgSQL_stmt_block * action
Definition: plpgsql.h:1035
PLpgSQL_type * datatype
Definition: plpgsql.h:310
Datum expand_array(Datum arraydatum, MemoryContext parentcontext, ArrayMetaState *metacache)
static void plpgsql_exec_error_callback(void *arg)
Definition: pl_exec.c:1221
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
#define gettext_noop(x)
Definition: c.h:1160
int errcode(int sqlerrcode)
Definition: elog.c:610
static void assign_simple_var(PLpgSQL_execstate *estate, PLpgSQL_var *var, Datum newvalue, bool isnull, bool freeable)
Definition: pl_exec.c:8480
static void exec_eval_cleanup(PLpgSQL_execstate *estate)
Definition: pl_exec.c:4046
unsigned int Oid
Definition: postgres_ext.h:31
static void exec_move_row_from_datum(PLpgSQL_execstate *estate, PLpgSQL_variable *target, Datum value)
Definition: pl_exec.c:7491
PLpgSQL_datum_type dtype
Definition: plpgsql.h:267
void(* callback)(void *arg)
Definition: elog.h:229
struct ErrorContextCallback * previous
Definition: elog.h:228
static void copy_plpgsql_datums(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: pl_exec.c:1279
PLpgSQL_datum ** datums
Definition: plpgsql.h:1082
ErrorContextCallback * error_context_stack
Definition: elog.c:92
Datum TransferExpandedObject(Datum d, MemoryContext new_parent)
TupleDesc tuple_store_desc
Definition: plpgsql.h:1068
static Datum exec_cast_value(PLpgSQL_execstate *estate, Datum value, bool *isnull, Oid valtype, int32 valtypmod, Oid reqtype, int32 reqtypmod)
Definition: pl_exec.c:7788
#define ERROR
Definition: elog.h:43
MemoryContext tuple_store_cxt
Definition: plpgsql.h:1069
fmNodePtr resultinfo
Definition: fmgr.h:89
Datum SPI_datumTransfer(Datum value, bool typByVal, int typLen)
Definition: spi.c:1137
NullableDatum args[FLEXIBLE_ARRAY_MEMBER]
Definition: fmgr.h:95
static void plpgsql_destroy_econtext(PLpgSQL_execstate *estate)
Definition: pl_exec.c:8389
ReturnSetInfo * rsi
Definition: plpgsql.h:1071
Datum value
Definition: postgres.h:378
PLpgSQL_plugin ** plpgsql_plugin_ptr
Definition: pl_handler.c:56
Tuplestorestate * tuple_store
Definition: plpgsql.h:1067
bool fn_retisdomain
Definition: plpgsql.h:1006
void(* func_beg)(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: plpgsql.h:1152
bool typisarray
Definition: plpgsql.h:208
uintptr_t Datum
Definition: postgres.h:367
const char * err_text
Definition: plpgsql.h:1113
void domain_check(Datum value, bool isnull, Oid domainType, void **extra, MemoryContext mcxt)
Definition: domains.c:327
Datum value
Definition: plpgsql.h:323
#define ereport(elevel,...)
Definition: elog.h:144
void(* func_end)(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: plpgsql.h:1153
int allowedModes
Definition: execnodes.h:305
SetFunctionReturnMode returnMode
Definition: execnodes.h:307
#define VARATT_IS_EXTERNAL_EXPANDED_RO(PTR)
Definition: postgres.h:318
static void plpgsql_estate_setup(PLpgSQL_execstate *estate, PLpgSQL_function *func, ReturnSetInfo *rsi, EState *simple_eval_estate, ResourceOwner simple_eval_resowner)
Definition: pl_exec.c:3896
static void exec_set_found(PLpgSQL_execstate *estate, bool state)
Definition: pl_exec.c:8304
Tuplestorestate * setResult
Definition: execnodes.h:310
#define DatumGetPointer(X)
Definition: postgres.h:549
MemoryContext datum_context
Definition: plpgsql.h:1084
TupleDesc setDesc
Definition: execnodes.h:311
int errmsg(const char *fmt,...)
Definition: elog.c:824
static void exec_move_row(PLpgSQL_execstate *estate, PLpgSQL_variable *target, HeapTuple tup, TupleDesc tupdesc)
Definition: pl_exec.c:6817
#define elog(elevel,...)
Definition: elog.h:214
int i
#define VARATT_IS_EXTERNAL_EXPANDED_RW(PTR)
Definition: postgres.h:320
static void coerce_function_result_tuple(PLpgSQL_execstate *estate, TupleDesc tupdesc)
Definition: pl_exec.c:796
bool isnull
Definition: plpgsql.h:324

◆ plpgsql_exec_get_datum_type()

Oid plpgsql_exec_get_datum_type ( PLpgSQL_execstate estate,
PLpgSQL_datum datum 
)

Definition at line 5562 of file pl_exec.c.

References PLpgSQL_var::datatype, PLpgSQL_execstate::datums, PLpgSQL_datum::dtype, elog, ExpandedRecordHeader::er_tupdesc_id, ExpandedRecordHeader::er_typeid, ereport, PLpgSQL_rec::erh, errcode(), errmsg(), ERROR, expanded_record_lookup_field(), PLpgSQL_recfield::fieldname, PLpgSQL_recfield::finfo, ExpandedRecordFieldInfo::ftypeid, instantiate_empty_record_variable(), InvalidOid, PLPGSQL_DTYPE_PROMISE, PLPGSQL_DTYPE_REC, PLPGSQL_DTYPE_RECFIELD, PLPGSQL_DTYPE_VAR, PLpgSQL_recfield::recparentno, PLpgSQL_recfield::rectupledescid, PLpgSQL_rec::rectypeid, PLpgSQL_rec::refname, PLpgSQL_type::typoid, and unlikely.

Referenced by exec_stmt_foreach_a().

5564 {
5565  Oid typeid;
5566 
5567  switch (datum->dtype)
5568  {
5569  case PLPGSQL_DTYPE_VAR:
5570  case PLPGSQL_DTYPE_PROMISE:
5571  {
5572  PLpgSQL_var *var = (PLpgSQL_var *) datum;
5573 
5574  typeid = var->datatype->typoid;
5575  break;
5576  }
5577 
5578  case PLPGSQL_DTYPE_REC:
5579  {
5580  PLpgSQL_rec *rec = (PLpgSQL_rec *) datum;
5581 
5582  if (rec->erh == NULL || rec->rectypeid != RECORDOID)
5583  {
5584  /* Report variable's declared type */
5585  typeid = rec->rectypeid;
5586  }
5587  else
5588  {
5589  /* Report record's actual type if declared RECORD */
5590  typeid = rec->erh->er_typeid;
5591  }
5592  break;
5593  }
5594 
5596  {
5597  PLpgSQL_recfield *recfield = (PLpgSQL_recfield *) datum;
5598  PLpgSQL_rec *rec;
5599 
5600  rec = (PLpgSQL_rec *) (estate->datums[recfield->recparentno]);
5601 
5602  /*
5603  * If record variable is NULL, instantiate it if it has a
5604  * named composite type, else complain. (This won't change
5605  * the logical state of the record: it's still NULL.)
5606  */
5607  if (rec->erh == NULL)
5608  instantiate_empty_record_variable(estate, rec);
5609 
5610  /*
5611  * Look up the field's properties if we have not already, or
5612  * if the tuple descriptor ID changed since last time.
5613  */
5614  if (unlikely(recfield->rectupledescid != rec->erh->er_tupdesc_id))
5615  {
5617  recfield->fieldname,
5618  &recfield->finfo))
5619  ereport(ERROR,
5620  (errcode(ERRCODE_UNDEFINED_COLUMN),
5621  errmsg("record \"%s\" has no field \"%s\"",
5622  rec->refname, recfield->fieldname)));
5623  recfield->rectupledescid = rec->erh->er_tupdesc_id;
5624  }
5625 
5626  typeid = recfield->finfo.ftypeid;
5627  break;
5628  }
5629 
5630  default:
5631  elog(ERROR, "unrecognized dtype: %d", datum->dtype);
5632  typeid = InvalidOid; /* keep compiler quiet */
5633  break;
5634  }
5635 
5636  return typeid;
5637 }
bool expanded_record_lookup_field(ExpandedRecordHeader *erh, const char *fieldname, ExpandedRecordFieldInfo *finfo)
PLpgSQL_type * datatype
Definition: plpgsql.h:310
static void instantiate_empty_record_variable(PLpgSQL_execstate *estate, PLpgSQL_rec *rec)
Definition: pl_exec.c:7724
ExpandedRecordHeader * erh
Definition: plpgsql.h:404
int errcode(int sqlerrcode)
Definition: elog.c:610
unsigned int Oid
Definition: postgres_ext.h:31
PLpgSQL_datum_type dtype
Definition: plpgsql.h:267
char * refname
Definition: plpgsql.h:383
PLpgSQL_datum ** datums
Definition: plpgsql.h:1082
#define ERROR
Definition: elog.h:43
uint64 rectupledescid
Definition: plpgsql.h:419
ExpandedRecordFieldInfo finfo
Definition: plpgsql.h:420
#define InvalidOid
Definition: postgres_ext.h:36
#define ereport(elevel,...)
Definition: elog.h:144
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define elog(elevel,...)
Definition: elog.h:214
#define unlikely(x)
Definition: c.h:206
Oid rectypeid
Definition: plpgsql.h:397
char * fieldname
Definition: plpgsql.h:416
Oid typoid
Definition: plpgsql.h:202

◆ plpgsql_exec_get_datum_type_info()

void plpgsql_exec_get_datum_type_info ( PLpgSQL_execstate estate,
PLpgSQL_datum datum,
Oid typeId,
int32 typMod,
Oid collation 
)

Definition at line 5647 of file pl_exec.c.

References PLpgSQL_type::atttypmod, PLpgSQL_type::collation, PLpgSQL_var::datatype, PLpgSQL_execstate::datums, PLpgSQL_datum::dtype, elog, ExpandedRecordHeader::er_tupdesc_id, ExpandedRecordHeader::er_typeid, ereport, PLpgSQL_rec::erh, errcode(), errmsg(), ERROR, expanded_record_lookup_field(), ExpandedRecordFieldInfo::fcollation, PLpgSQL_recfield::fieldname, PLpgSQL_recfield::finfo, ExpandedRecordFieldInfo::ftypeid, ExpandedRecordFieldInfo::ftypmod, instantiate_empty_record_variable(), InvalidOid, PLPGSQL_DTYPE_PROMISE, PLPGSQL_DTYPE_REC, PLPGSQL_DTYPE_RECFIELD, PLPGSQL_DTYPE_VAR, PLpgSQL_recfield::recparentno, PLpgSQL_recfield::rectupledescid, PLpgSQL_rec::rectypeid, PLpgSQL_rec::refname, PLpgSQL_type::typoid, and unlikely.

Referenced by make_datum_param().

5650 {
5651  switch (datum->dtype)
5652  {
5653  case PLPGSQL_DTYPE_VAR:
5654  case PLPGSQL_DTYPE_PROMISE:
5655  {
5656  PLpgSQL_var *var = (PLpgSQL_var *) datum;
5657 
5658  *typeId = var->datatype->typoid;
5659  *typMod = var->datatype->atttypmod;
5660  *collation = var->datatype->collation;
5661  break;
5662  }
5663 
5664  case PLPGSQL_DTYPE_REC:
5665  {
5666  PLpgSQL_rec *rec = (PLpgSQL_rec *) datum;
5667 
5668  if (rec->erh == NULL || rec->rectypeid != RECORDOID)
5669  {
5670  /* Report variable's declared type */
5671  *typeId = rec->rectypeid;
5672  *typMod = -1;
5673  }
5674  else
5675  {
5676  /* Report record's actual type if declared RECORD */
5677  *typeId = rec->erh->er_typeid;
5678  /* do NOT return the mutable typmod of a RECORD variable */
5679  *typMod = -1;
5680  }
5681  /* composite types are never collatable */
5682  *collation = InvalidOid;
5683  break;
5684  }
5685 
5687  {
5688  PLpgSQL_recfield *recfield = (PLpgSQL_recfield *) datum;
5689  PLpgSQL_rec *rec;
5690 
5691  rec = (PLpgSQL_rec *) (estate->datums[recfield->recparentno]);
5692 
5693  /*
5694  * If record variable is NULL, instantiate it if it has a
5695  * named composite type, else complain. (This won't change
5696  * the logical state of the record: it's still NULL.)
5697  */
5698  if (rec->erh == NULL)
5699  instantiate_empty_record_variable(estate, rec);
5700 
5701  /*
5702  * Look up the field's properties if we have not already, or
5703  * if the tuple descriptor ID changed since last time.
5704  */
5705  if (unlikely(recfield->rectupledescid != rec->erh->er_tupdesc_id))
5706  {
5708  recfield->fieldname,
5709  &recfield->finfo))
5710  ereport(ERROR,
5711  (errcode(ERRCODE_UNDEFINED_COLUMN),
5712  errmsg("record \"%s\" has no field \"%s\"",
5713  rec->refname, recfield->fieldname)));
5714  recfield->rectupledescid = rec->erh->er_tupdesc_id;
5715  }
5716 
5717  *typeId = recfield->finfo.ftypeid;
5718  *typMod = recfield->finfo.ftypmod;
5719  *collation = recfield->finfo.fcollation;
5720  break;
5721  }
5722 
5723  default:
5724  elog(ERROR, "unrecognized dtype: %d", datum->dtype);
5725  *typeId = InvalidOid; /* keep compiler quiet */
5726  *typMod = -1;
5727  *collation = InvalidOid;
5728  break;
5729  }
5730 }
bool expanded_record_lookup_field(ExpandedRecordHeader *erh, const char *fieldname, ExpandedRecordFieldInfo *finfo)
PLpgSQL_type * datatype
Definition: plpgsql.h:310
static void instantiate_empty_record_variable(PLpgSQL_execstate *estate, PLpgSQL_rec *rec)
Definition: pl_exec.c:7724
ExpandedRecordHeader * erh
Definition: plpgsql.h:404
int errcode(int sqlerrcode)
Definition: elog.c:610
PLpgSQL_datum_type dtype
Definition: plpgsql.h:267
char * refname
Definition: plpgsql.h:383
PLpgSQL_datum ** datums
Definition: plpgsql.h:1082
#define ERROR
Definition: elog.h:43
uint64 rectupledescid
Definition: plpgsql.h:419
Oid collation
Definition: plpgsql.h:207
ExpandedRecordFieldInfo finfo
Definition: plpgsql.h:420
#define InvalidOid
Definition: postgres_ext.h:36
#define ereport(elevel,...)
Definition: elog.h:144
int errmsg(const char *fmt,...)
Definition: elog.c:824
int32 atttypmod
Definition: plpgsql.h:209
#define elog(elevel,...)
Definition: elog.h:214
#define unlikely(x)
Definition: c.h:206
Oid rectypeid
Definition: plpgsql.h:397
char * fieldname
Definition: plpgsql.h:416
Oid typoid
Definition: plpgsql.h:202

◆ plpgsql_exec_trigger()

HeapTuple plpgsql_exec_trigger ( PLpgSQL_function func,
TriggerData trigdata 
)

Definition at line 907 of file pl_exec.c.

References PLpgSQL_function::action, ErrorContextCallback::arg, Assert, ErrorContextCallback::callback, TupleDescData::constr, convert_tuples_by_position(), copy_plpgsql_datums(), PLpgSQL_execstate::datum_context, DatumGetEOHP(), DatumGetPointer, PLpgSQL_execstate::datums, deconstruct_composite_datum(), elog, ER_MAGIC, ExpandedRecordHeader::er_magic, ereport, PLpgSQL_rec::erh, PLpgSQL_execstate::err_stmt, PLpgSQL_execstate::err_text, errcode(), errmsg(), ERROR, error_context_stack, exec_eval_cleanup(), exec_set_found(), exec_stmt(), execute_attr_map_tuple(), expanded_record_get_tupdesc(), expanded_record_get_tuple(), expanded_record_set_field_internal(), expanded_record_set_tuple(), PLpgSQL_plugin::func_beg, PLpgSQL_plugin::func_end, gettext_noop, TupleConstr::has_generated_stored, i, make_expanded_record_from_exprecord(), make_expanded_record_from_tupdesc(), TupleDescData::natts, PLpgSQL_function::new_varno, PLpgSQL_function::old_varno, plpgsql_destroy_econtext(), plpgsql_estate_setup(), plpgsql_exec_error_callback(), plpgsql_plugin_ptr, PLPGSQL_RC_RETURN, ErrorContextCallback::previous, RelationGetDescr, ReleaseTupleDesc, PLpgSQL_execstate::retisnull, PLpgSQL_execstate::retisset, PLpgSQL_execstate::rettype, PLpgSQL_execstate::retval, SPI_copytuple(), SPI_register_trigger_data(), TriggerData::tg_event, TriggerData::tg_newtuple, TriggerData::tg_relation, TriggerData::tg_trigtuple, PLpgSQL_execstate::trigdata, TRIGGER_FIRED_BEFORE, TRIGGER_FIRED_BY_DELETE, TRIGGER_FIRED_BY_INSERT, TRIGGER_FIRED_BY_UPDATE, TRIGGER_FIRED_FOR_ROW, TupleDescAttr, type_is_rowtype(), and VARATT_IS_EXTERNAL_EXPANDED.

Referenced by plpgsql_call_handler().

909 {
910  PLpgSQL_execstate estate;
911  ErrorContextCallback plerrcontext;
912  int rc;
913  TupleDesc tupdesc;
914  PLpgSQL_rec *rec_new,
915  *rec_old;
916  HeapTuple rettup;
917 
918  /*
919  * Setup the execution state
920  */
921  plpgsql_estate_setup(&estate, func, NULL, NULL, NULL);
922  estate.trigdata = trigdata;
923 
924  /*
925  * Setup error traceback support for ereport()
926  */
927  plerrcontext.callback = plpgsql_exec_error_callback;
928  plerrcontext.arg = &estate;
929  plerrcontext.previous = error_context_stack;
930  error_context_stack = &plerrcontext;
931 
932  /*
933  * Make local execution copies of all the datums
934  */
935  estate.err_text = gettext_noop("during initialization of execution state");
936  copy_plpgsql_datums(&estate, func);
937 
938  /*
939  * Put the OLD and NEW tuples into record variables
940  *
941  * We set up expanded records for both variables even though only one may
942  * have a value. This allows record references to succeed in functions
943  * that are used for multiple trigger types. For example, we might have a
944  * test like "if (TG_OP = 'INSERT' and NEW.foo = 'xyz')", which should
945  * work regardless of the current trigger type. If a value is actually
946  * fetched from an unsupplied tuple, it will read as NULL.
947  */
948  tupdesc = RelationGetDescr(trigdata->tg_relation);
949 
950  rec_new = (PLpgSQL_rec *) (estate.datums[func->new_varno]);
951  rec_old = (PLpgSQL_rec *) (estate.datums[func->old_varno]);
952 
953  rec_new->erh = make_expanded_record_from_tupdesc(tupdesc,
954  estate.datum_context);
955  rec_old->erh = make_expanded_record_from_exprecord(rec_new->erh,
956  estate.datum_context);
957 
958  if (!TRIGGER_FIRED_FOR_ROW(trigdata->tg_event))
959  {
960  /*
961  * Per-statement triggers don't use OLD/NEW variables
962  */
963  }
964  else if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
965  {
966  expanded_record_set_tuple(rec_new->erh, trigdata->tg_trigtuple,
967  false, false);
968  }
969  else if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
970  {
971  expanded_record_set_tuple(rec_new->erh, trigdata->tg_newtuple,
972  false, false);
973  expanded_record_set_tuple(rec_old->erh, trigdata->tg_trigtuple,
974  false, false);
975 
976  /*
977  * In BEFORE trigger, stored generated columns are not computed yet,
978  * so make them null in the NEW row. (Only needed in UPDATE branch;
979  * in the INSERT case, they are already null, but in UPDATE, the field
980  * still contains the old value.) Alternatively, we could construct a
981  * whole new row structure without the generated columns, but this way
982  * seems more efficient and potentially less confusing.
983  */
984  if (tupdesc->constr && tupdesc->constr->has_generated_stored &&
985  TRIGGER_FIRED_BEFORE(trigdata->tg_event))
986  {
987  for (int i = 0; i < tupdesc->natts; i++)
988  if (TupleDescAttr(tupdesc, i)->attgenerated == ATTRIBUTE_GENERATED_STORED)
990  i + 1,
991  (Datum) 0,
992  true, /* isnull */
993  false, false);
994  }
995  }
996  else if (TRIGGER_FIRED_BY_DELETE(trigdata->tg_event))
997  {
998  expanded_record_set_tuple(rec_old->erh, trigdata->tg_trigtuple,
999  false, false);
1000  }
1001  else
1002  elog(ERROR, "unrecognized trigger action: not INSERT, DELETE, or UPDATE");
1003 
1004  /* Make transition tables visible to this SPI connection */
1005  rc = SPI_register_trigger_data(trigdata);
1006  Assert(rc >= 0);
1007 
1008  estate.err_text = gettext_noop("during function entry");
1009 
1010  /*
1011  * Set the magic variable FOUND to false
1012  */
1013  exec_set_found(&estate, false);
1014 
1015  /*
1016  * Let the instrumentation plugin peek at this function
1017  */
1018  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_beg)
1019  ((*plpgsql_plugin_ptr)->func_beg) (&estate, func);
1020 
1021  /*
1022  * Now call the toplevel block of statements
1023  */
1024  estate.err_text = NULL;
1025  estate.err_stmt = (PLpgSQL_stmt *) (func->action);
1026  rc = exec_stmt(&estate, (PLpgSQL_stmt *) func->action);
1027  if (rc != PLPGSQL_RC_RETURN)
1028  {
1029  estate.err_stmt = NULL;
1030  estate.err_text = NULL;
1031  ereport(ERROR,
1032  (errcode(ERRCODE_S_R_E_FUNCTION_EXECUTED_NO_RETURN_STATEMENT),
1033  errmsg("control reached end of trigger procedure without RETURN")));
1034  }
1035 
1036  estate.err_stmt = NULL;
1037  estate.err_text = gettext_noop("during function exit");
1038 
1039  if (estate.retisset)
1040  ereport(ERROR,
1041  (errcode(ERRCODE_DATATYPE_MISMATCH),
1042  errmsg("trigger procedure cannot return a set")));
1043 
1044  /*
1045  * Check that the returned tuple structure has the same attributes, the
1046  * relation that fired the trigger has. A per-statement trigger always
1047  * needs to return NULL, so we ignore any return value the function itself
1048  * produces (XXX: is this a good idea?)
1049  *
1050  * XXX This way it is possible, that the trigger returns a tuple where
1051  * attributes don't have the correct atttypmod's length. It's up to the
1052  * trigger's programmer to ensure that this doesn't happen. Jan
1053  */
1054  if (estate.retisnull || !TRIGGER_FIRED_FOR_ROW(trigdata->tg_event))
1055  rettup = NULL;
1056  else
1057  {
1058  TupleDesc retdesc;
1059  TupleConversionMap *tupmap;
1060 
1061  /* We assume exec_stmt_return verified that result is composite */
1062  Assert(type_is_rowtype(estate.rettype));
1063 
1064  /* We can special-case expanded records for speed */
1066  {
1068 
1069  Assert(erh->er_magic == ER_MAGIC);
1070 
1071  /* Extract HeapTuple and TupleDesc */
1072  rettup = expanded_record_get_tuple(erh);
1073  Assert(rettup);
1074  retdesc = expanded_record_get_tupdesc(erh);
1075 
1076  if (retdesc != RelationGetDescr(trigdata->tg_relation))
1077  {
1078  /* check rowtype compatibility */
1079  tupmap = convert_tuples_by_position(retdesc,
1080  RelationGetDescr(trigdata->tg_relation),
1081  gettext_noop("returned row structure does not match the structure of the triggering table"));
1082  /* it might need conversion */
1083  if (tupmap)
1084  rettup = execute_attr_map_tuple(rettup, tupmap);
1085  /* no need to free map, we're about to return anyway */
1086  }
1087 
1088  /*
1089  * Copy tuple to upper executor memory. But if user just did
1090  * "return new" or "return old" without changing anything, there's
1091  * no need to copy; we can return the original tuple (which will
1092  * save a few cycles in trigger.c as well as here).
1093  */
1094  if (rettup != trigdata->tg_newtuple &&
1095  rettup != trigdata->tg_trigtuple)
1096  rettup = SPI_copytuple(rettup);
1097  }
1098  else
1099  {
1100  /* Convert composite datum to a HeapTuple and TupleDesc */
1101  HeapTupleData tmptup;
1102 
1103  retdesc = deconstruct_composite_datum(estate.retval, &tmptup);
1104  rettup = &tmptup;
1105 
1106  /* check rowtype compatibility */
1107  tupmap = convert_tuples_by_position(retdesc,
1108  RelationGetDescr(trigdata->tg_relation),
1109  gettext_noop("returned row structure does not match the structure of the triggering table"));
1110  /* it might need conversion */
1111  if (tupmap)
1112  rettup = execute_attr_map_tuple(rettup, tupmap);
1113 
1114  ReleaseTupleDesc(retdesc);
1115  /* no need to free map, we're about to return anyway */
1116 
1117  /* Copy tuple to upper executor memory */
1118  rettup = SPI_copytuple(rettup);
1119  }
1120  }
1121 
1122  /*
1123  * Let the instrumentation plugin peek at this function
1124  */
1125  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_end)
1126  ((*plpgsql_plugin_ptr)->func_end) (&estate, func);
1127 
1128  /* Clean up any leftover temporary memory */
1129  plpgsql_destroy_econtext(&estate);
1130  exec_eval_cleanup(&estate);
1131  /* stmt_mcontext will be destroyed when function's main context is */
1132 
1133  /*
1134  * Pop the error context stack
1135  */
1136  error_context_stack = plerrcontext.previous;
1137 
1138  /*
1139  * Return the trigger's result
1140  */
1141  return rettup;
1142 }
void expanded_record_set_field_internal(ExpandedRecordHeader *erh, int fnumber, Datum newValue, bool isnull, bool expand_external, bool check_constraints)
static int exec_stmt(PLpgSQL_execstate *estate, PLpgSQL_stmt *stmt)
Definition: pl_exec.c:1959
HeapTuple expanded_record_get_tuple(ExpandedRecordHeader *erh)
#define VARATT_IS_EXTERNAL_EXPANDED(PTR)
Definition: postgres.h:322
void expanded_record_set_tuple(ExpandedRecordHeader *erh, HeapTuple tuple, bool copy, bool expand_external)
PLpgSQL_stmt * err_stmt
Definition: plpgsql.h:1112
#define RelationGetDescr(relation)
Definition: rel.h:482
TupleConversionMap * convert_tuples_by_position(TupleDesc indesc, TupleDesc outdesc, const char *msg)
Definition: tupconvert.c:59
PLpgSQL_stmt_block * action
Definition: plpgsql.h:1035
TriggerData * trigdata
Definition: plpgsql.h:1049
#define TupleDescAttr(tupdesc, i)
Definition: tupdesc.h:92
static void plpgsql_exec_error_callback(void *arg)
Definition: pl_exec.c:1221
#define gettext_noop(x)
Definition: c.h:1160
ExpandedRecordHeader * erh
Definition: plpgsql.h:404
static TupleDesc deconstruct_composite_datum(Datum value, HeapTupleData *tmptup)
Definition: pl_exec.c:7460
int errcode(int sqlerrcode)
Definition: elog.c:610
HeapTuple SPI_copytuple(HeapTuple tuple)
Definition: spi.c:823
static void exec_eval_cleanup(PLpgSQL_execstate *estate)
Definition: pl_exec.c:4046
void(* callback)(void *arg)
Definition: elog.h:229
struct ErrorContextCallback * previous
Definition: elog.h:228
static void copy_plpgsql_datums(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: pl_exec.c:1279
HeapTuple tg_trigtuple
Definition: trigger.h:35
PLpgSQL_datum ** datums
Definition: plpgsql.h:1082
ErrorContextCallback * error_context_stack
Definition: elog.c:92
bool has_generated_stored
Definition: tupdesc.h:45
#define ERROR
Definition: elog.h:43
TupleConstr * constr
Definition: tupdesc.h:85
static void plpgsql_destroy_econtext(PLpgSQL_execstate *estate)
Definition: pl_exec.c:8389
bool type_is_rowtype(Oid typid)
Definition: lsyscache.c:2543
HeapTuple execute_attr_map_tuple(HeapTuple tuple, TupleConversionMap *map)
Definition: tupconvert.c:139
int SPI_register_trigger_data(TriggerData *tdata)
Definition: spi.c:2924
PLpgSQL_plugin ** plpgsql_plugin_ptr
Definition: pl_handler.c:56
static TupleDesc expanded_record_get_tupdesc(ExpandedRecordHeader *erh)
ExpandedObjectHeader * DatumGetEOHP(Datum d)
Definition: expandeddatum.c:29
#define TRIGGER_FIRED_BY_DELETE(event)
Definition: trigger.h:120
void(* func_beg)(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: plpgsql.h:1152
uintptr_t Datum
Definition: postgres.h:367
#define ER_MAGIC
ExpandedRecordHeader * make_expanded_record_from_exprecord(ExpandedRecordHeader *olderh, MemoryContext parentcontext)
ExpandedRecordHeader * make_expanded_record_from_tupdesc(TupleDesc tupdesc, MemoryContext parentcontext)
const char * err_text
Definition: plpgsql.h:1113
HeapTuple tg_newtuple
Definition: trigger.h:36
#define ereport(elevel,...)
Definition: elog.h:144
void(* func_end)(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: plpgsql.h:1153
#define Assert(condition)
Definition: c.h:738
TriggerEvent tg_event
Definition: trigger.h:33
static void plpgsql_estate_setup(PLpgSQL_execstate *estate, PLpgSQL_function *func, ReturnSetInfo *rsi, EState *simple_eval_estate, ResourceOwner simple_eval_resowner)
Definition: pl_exec.c:3896
static void exec_set_found(PLpgSQL_execstate *estate, bool state)
Definition: pl_exec.c:8304
#define DatumGetPointer(X)
Definition: postgres.h:549
MemoryContext datum_context
Definition: plpgsql.h:1084
#define TRIGGER_FIRED_BEFORE(event)
Definition: trigger.h:135
#define TRIGGER_FIRED_BY_INSERT(event)
Definition: trigger.h:117
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define elog(elevel,...)
Definition: elog.h:214
int i
#define ReleaseTupleDesc(tupdesc)
Definition: tupdesc.h:122
#define TRIGGER_FIRED_FOR_ROW(event)
Definition: trigger.h:129
#define TRIGGER_FIRED_BY_UPDATE(event)
Definition: trigger.h:123
Relation tg_relation
Definition: trigger.h:34

◆ plpgsql_free_function_memory()

void plpgsql_free_function_memory ( PLpgSQL_function func)

Definition at line 737 of file pl_funcs.c.

References PLpgSQL_function::action, Assert, PLpgSQL_var::cursor_explicit_expr, PLpgSQL_function::datums, PLpgSQL_var::default_val, PLpgSQL_rec::default_val, PLpgSQL_datum::dtype, PLpgSQL_arrayelem::dtype, elog, ERROR, PLpgSQL_function::fn_cxt, free_block(), free_expr(), i, MemoryContextDelete(), PLpgSQL_function::ndatums, PLPGSQL_DTYPE_ARRAYELEM, PLPGSQL_DTYPE_PROMISE, PLPGSQL_DTYPE_REC, PLPGSQL_DTYPE_RECFIELD, PLPGSQL_DTYPE_ROW, PLPGSQL_DTYPE_VAR, and PLpgSQL_function::use_count.

Referenced by delete_function(), and plpgsql_inline_handler().

738 {
739  int i;
740 
741  /* Better not call this on an in-use function */
742  Assert(func->use_count == 0);
743 
744  /* Release plans associated with variable declarations */
745  for (i = 0; i < func->ndatums; i++)
746  {
747  PLpgSQL_datum *d = func->datums[i];
748 
749  switch (d->dtype)
750  {
751  case PLPGSQL_DTYPE_VAR:
753  {
754  PLpgSQL_var *var = (PLpgSQL_var *) d;
755 
756  free_expr(var->default_val);
758  }
759  break;
760  case PLPGSQL_DTYPE_ROW:
761  break;
762  case PLPGSQL_DTYPE_REC:
763  {
764  PLpgSQL_rec *rec = (PLpgSQL_rec *) d;
765 
766  free_expr(rec->default_val);
767  }
768  break;
770  break;
772  free_expr(((PLpgSQL_arrayelem *) d)->subscript);
773  break;
774  default:
775  elog(ERROR, "unrecognized data type: %d", d->dtype);
776  }
777  }
778  func->ndatums = 0;
779 
780  /* Release plans in statement tree */
781  if (func->action)
782  free_block(func->action);
783  func->action = NULL;
784 
785  /*
786  * And finally, release all memory except the PLpgSQL_function struct
787  * itself (which has to be kept around because there may be multiple
788  * fn_extra pointers to it).
789  */
790  if (func->fn_cxt)
792  func->fn_cxt = NULL;
793 }
PLpgSQL_datum ** datums
Definition: plpgsql.h:1031
void MemoryContextDelete(MemoryContext context)
Definition: mcxt.c:211
PLpgSQL_stmt_block * action
Definition: plpgsql.h:1035
PLpgSQL_expr * cursor_explicit_expr
Definition: plpgsql.h:317
PLpgSQL_datum_type dtype
Definition: plpgsql.h:267
#define ERROR
Definition: elog.h:43
PLpgSQL_expr * default_val
Definition: plpgsql.h:307
unsigned long use_count
Definition: plpgsql.h:1039
static void free_expr(PLpgSQL_expr *expr)
Definition: pl_funcs.c:727
MemoryContext fn_cxt
Definition: plpgsql.h:1000
#define Assert(condition)
Definition: c.h:738
#define elog(elevel,...)
Definition: elog.h:214
int i
PLpgSQL_expr * default_val
Definition: plpgsql.h:387
static void free_block(PLpgSQL_stmt_block *block)
Definition: pl_funcs.c:484

◆ plpgsql_getdiag_kindname()

const char* plpgsql_getdiag_kindname ( PLpgSQL_getdiag_kind  kind)

Definition at line 302 of file pl_funcs.c.

References free_assert(), free_assign(), free_block(), free_call(), free_case(), free_close(), free_commit(), free_dynexecute(), free_dynfors(), free_execsql(), free_exit(), free_expr(), free_fetch(), free_forc(), free_foreach_a(), free_fori(), free_fors(), free_getdiag(), free_if(), free_loop(), free_open(), free_perform(), free_raise(), free_return(), free_return_next(), free_return_query(), free_rollback(), free_set(), free_stmt(), free_while(), PLPGSQL_GETDIAG_COLUMN_NAME, PLPGSQL_GETDIAG_CONSTRAINT_NAME, PLPGSQL_GETDIAG_CONTEXT, PLPGSQL_GETDIAG_DATATYPE_NAME, PLPGSQL_GETDIAG_ERROR_CONTEXT, PLPGSQL_GETDIAG_ERROR_DETAIL, PLPGSQL_GETDIAG_ERROR_HINT, PLPGSQL_GETDIAG_MESSAGE_TEXT, PLPGSQL_GETDIAG_RETURNED_SQLSTATE, PLPGSQL_GETDIAG_ROW_COUNT, PLPGSQL_GETDIAG_SCHEMA_NAME, and PLPGSQL_GETDIAG_TABLE_NAME.

Referenced by dump_getdiag().

303 {
304  switch (kind)
305  {
307  return "ROW_COUNT";
309  return "PG_CONTEXT";
311  return "PG_EXCEPTION_CONTEXT";
313  return "PG_EXCEPTION_DETAIL";
315  return "PG_EXCEPTION_HINT";
317  return "RETURNED_SQLSTATE";
319  return "COLUMN_NAME";
321  return "CONSTRAINT_NAME";
323  return "PG_DATATYPE_NAME";
325  return "MESSAGE_TEXT";
327  return "TABLE_NAME";
329  return "SCHEMA_NAME";
330  }
331 
332  return "unknown";
333 }

◆ plpgsql_HashTableInit()

void plpgsql_HashTableInit ( void  )

Definition at line 2544 of file pl_comp.c.

References Assert, HASHCTL::entrysize, FUNCS_PER_USER, HASH_BLOBS, hash_create(), HASH_ELEM, and HASHCTL::keysize.

Referenced by _PG_init().

2545 {
2546  HASHCTL ctl;
2547 
2548  /* don't allow double-initialization */
2549  Assert(plpgsql_HashTable == NULL);
2550 
2551  memset(&ctl, 0, sizeof(ctl));
2552  ctl.keysize = sizeof(PLpgSQL_func_hashkey);
2553  ctl.entrysize = sizeof(plpgsql_HashEnt);
2554  plpgsql_HashTable = hash_create("PLpgSQL function hash",
2556  &ctl,
2557  HASH_ELEM | HASH_BLOBS);
2558 }
#define FUNCS_PER_USER
Definition: pl_comp.c:69
#define HASH_ELEM
Definition: hsearch.h:87
Size entrysize
Definition: hsearch.h:73
static HTAB * plpgsql_HashTable
Definition: pl_comp.c:61
struct plpgsql_hashent plpgsql_HashEnt
struct PLpgSQL_func_hashkey PLpgSQL_func_hashkey
#define HASH_BLOBS
Definition: hsearch.h:88
HTAB * hash_create(const char *tabname, long nelem, HASHCTL *info, int flags)
Definition: dynahash.c:318
Size keysize
Definition: hsearch.h:72
#define Assert(condition)
Definition: c.h:738

◆ plpgsql_latest_lineno()

int plpgsql_latest_lineno ( void  )

Definition at line 572 of file pl_scanner.c.

References cur_line_num.

Referenced by plpgsql_compile_error_callback().

573 {
574  return cur_line_num;
575 }
static int cur_line_num
Definition: pl_scanner.c:128

◆ plpgsql_location_to_lineno()

int plpgsql_location_to_lineno ( int  location)

Definition at line 538 of file pl_scanner.c.

References cur_line_end, cur_line_num, cur_line_start, location_lineno_init(), and scanorig.

539 {
540  const char *loc;
541 
542  if (location < 0 || scanorig == NULL)
543  return 0; /* garbage in, garbage out */
544  loc = scanorig + location;
545 
546  /* be correct, but not fast, if input location goes backwards */
547  if (loc < cur_line_start)
549 
550  while (cur_line_end != NULL && loc > cur_line_end)
551  {
553  cur_line_num++;
554  cur_line_end = strchr(cur_line_start, '\n');
555  }
556 
557  return cur_line_num;
558 }
static int cur_line_num
Definition: pl_scanner.c:128
static void location_lineno_init(void)
Definition: pl_scanner.c:562
static const char * cur_line_start
Definition: pl_scanner.c:126
static const char * scanorig
Definition: pl_scanner.c:110
static const char * cur_line_end
Definition: pl_scanner.c:127

◆ plpgsql_ns_additem()

void plpgsql_ns_additem ( PLpgSQL_nsitem_type  itemtype,
int  itemno,
const char *  name 
)

Definition at line 92 of file pl_funcs.c.

References Assert, PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, PLpgSQL_nsitem::name, ns_top, offsetof, palloc(), PLPGSQL_NSTYPE_LABEL, and PLpgSQL_nsitem::prev.

Referenced by add_parameter_name(), plpgsql_build_record(), plpgsql_build_variable(), and plpgsql_ns_push().

93 {
94  PLpgSQL_nsitem *nse;
95 
96  Assert(name != NULL);
97  /* first item added must be a label */
98  Assert(ns_top != NULL || itemtype == PLPGSQL_NSTYPE_LABEL);
99 
100  nse = palloc(offsetof(PLpgSQL_nsitem, name) + strlen(name) + 1);
101  nse->itemtype = itemtype;
102  nse->itemno = itemno;
103  nse->prev = ns_top;
104  strcpy(nse->name, name);
105  ns_top = nse;
106 }
static PLpgSQL_nsitem * ns_top
Definition: pl_funcs.c:35
struct PLpgSQL_nsitem * prev
Definition: plpgsql.h:460
#define Assert(condition)
Definition: c.h:738
const char * name
Definition: encode.c:555
void * palloc(Size size)
Definition: mcxt.c:949
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453
char name[FLEXIBLE_ARRAY_MEMBER]
Definition: plpgsql.h:461
#define offsetof(type, field)
Definition: c.h:661

◆ plpgsql_ns_find_nearest_loop()

PLpgSQL_nsitem* plpgsql_ns_find_nearest_loop ( PLpgSQL_nsitem ns_cur)

Definition at line 214 of file pl_funcs.c.

References PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, PLPGSQL_LABEL_LOOP, PLPGSQL_NSTYPE_LABEL, and PLpgSQL_nsitem::prev.

215 {
216  while (ns_cur != NULL)
217  {
218  if (ns_cur->itemtype == PLPGSQL_NSTYPE_LABEL &&
219  ns_cur->itemno == PLPGSQL_LABEL_LOOP)
220  return ns_cur;
221  ns_cur = ns_cur->prev;
222  }
223 
224  return NULL; /* no loop found */
225 }
struct PLpgSQL_nsitem * prev
Definition: plpgsql.h:460
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453

◆ plpgsql_ns_init()

void plpgsql_ns_init ( void  )

Definition at line 43 of file pl_funcs.c.

Referenced by do_compile(), and plpgsql_compile_inline().

44 {
45  ns_top = NULL;
46 }
static PLpgSQL_nsitem * ns_top
Definition: pl_funcs.c:35

◆ plpgsql_ns_lookup()

PLpgSQL_nsitem* plpgsql_ns_lookup ( PLpgSQL_nsitem ns_cur,
bool  localmode,
const char *  name1,
const char *  name2,
const char *  name3,
int *  names_used 
)

Definition at line 130 of file pl_funcs.c.

References PLpgSQL_nsitem::itemtype, PLpgSQL_nsitem::name, PLPGSQL_NSTYPE_LABEL, PLPGSQL_NSTYPE_VAR, and PLpgSQL_nsitem::prev.

Referenced by add_parameter_name(), plpgsql_param_ref(), plpgsql_parse_cwordtype(), plpgsql_parse_dblword(), plpgsql_parse_tripword(), plpgsql_parse_word(), plpgsql_parse_wordtype(), and resolve_column_ref().

133 {
134  /* Outer loop iterates once per block level in the namespace chain */
135  while (ns_cur != NULL)
136  {
137  PLpgSQL_nsitem *nsitem;
138 
139  /* Check this level for unqualified match to variable name */
140  for (nsitem = ns_cur;
141  nsitem->itemtype != PLPGSQL_NSTYPE_LABEL;
142  nsitem = nsitem->prev)
143  {
144  if (strcmp(nsitem->name, name1) == 0)
145  {
146  if (name2 == NULL ||
147  nsitem->itemtype != PLPGSQL_NSTYPE_VAR)
148  {
149  if (names_used)
150  *names_used = 1;
151  return nsitem;
152  }
153  }
154  }
155 
156  /* Check this level for qualified match to variable name */
157  if (name2 != NULL &&
158  strcmp(nsitem->name, name1) == 0)
159  {
160  for (nsitem = ns_cur;
161  nsitem->itemtype != PLPGSQL_NSTYPE_LABEL;
162  nsitem = nsitem->prev)
163  {
164  if (strcmp(nsitem->name, name2) == 0)
165  {
166  if (name3 == NULL ||
167  nsitem->itemtype != PLPGSQL_NSTYPE_VAR)
168  {
169  if (names_used)
170  *names_used = 2;
171  return nsitem;
172  }
173  }
174  }
175  }
176 
177  if (localmode)
178  break; /* do not look into upper levels */
179 
180  ns_cur = nsitem->prev;
181  }
182 
183  /* This is just to suppress possibly-uninitialized-variable warnings */
184  if (names_used)
185  *names_used = 0;
186  return NULL; /* No match found */
187 }
struct PLpgSQL_nsitem * prev
Definition: plpgsql.h:460
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453
char name[FLEXIBLE_ARRAY_MEMBER]
Definition: plpgsql.h:461

◆ plpgsql_ns_lookup_label()

PLpgSQL_nsitem* plpgsql_ns_lookup_label ( PLpgSQL_nsitem ns_cur,
const char *  name 
)

Definition at line 195 of file pl_funcs.c.

References PLpgSQL_nsitem::itemtype, PLpgSQL_nsitem::name, PLPGSQL_NSTYPE_LABEL, and PLpgSQL_nsitem::prev.

196 {
197  while (ns_cur != NULL)
198  {
199  if (ns_cur->itemtype == PLPGSQL_NSTYPE_LABEL &&
200  strcmp(ns_cur->name, name) == 0)
201  return ns_cur;
202  ns_cur = ns_cur->prev;
203  }
204 
205  return NULL; /* label not found */
206 }
struct PLpgSQL_nsitem * prev
Definition: plpgsql.h:460
const char * name
Definition: encode.c:555
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453
char name[FLEXIBLE_ARRAY_MEMBER]
Definition: plpgsql.h:461

◆ plpgsql_ns_pop()

void plpgsql_ns_pop ( void  )

Definition at line 67 of file pl_funcs.c.

References Assert, PLpgSQL_nsitem::itemtype, PLPGSQL_NSTYPE_LABEL, and PLpgSQL_nsitem::prev.

68 {
69  Assert(ns_top != NULL);
71  ns_top = ns_top->prev;
72  ns_top = ns_top->prev;
73 }
static PLpgSQL_nsitem * ns_top
Definition: pl_funcs.c:35
struct PLpgSQL_nsitem * prev
Definition: plpgsql.h:460
#define Assert(condition)
Definition: c.h:738
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453

◆ plpgsql_ns_push()

void plpgsql_ns_push ( const char *  label,
PLpgSQL_label_type  label_type 
)

Definition at line 54 of file pl_funcs.c.

References plpgsql_ns_additem(), and PLPGSQL_NSTYPE_LABEL.

Referenced by do_compile(), and plpgsql_compile_inline().

55 {
56  if (label == NULL)
57  label = "";
58  plpgsql_ns_additem(PLPGSQL_NSTYPE_LABEL, (int) label_type, label);
59 }
void plpgsql_ns_additem(PLpgSQL_nsitem_type itemtype, int itemno, const char *name)
Definition: pl_funcs.c:92
static char * label

◆ plpgsql_ns_top()

PLpgSQL_nsitem* plpgsql_ns_top ( void  )

Definition at line 81 of file pl_funcs.c.

References ns_top.

Referenced by add_parameter_name(), plpgsql_parse_cwordtype(), plpgsql_parse_dblword(), plpgsql_parse_tripword(), plpgsql_parse_word(), and plpgsql_parse_wordtype().

82 {
83  return ns_top;
84 }
static PLpgSQL_nsitem * ns_top
Definition: pl_funcs.c:35

◆ plpgsql_parse_cwordrowtype()

PLpgSQL_type* plpgsql_parse_cwordrowtype ( List idents)

Definition at line 1806 of file pl_comp.c.

References get_rel_type_id(), InvalidOid, linitial, list_length(), lsecond, makeRangeVar(), makeTypeNameFromNameList(), MemoryContextSwitchTo(), NoLock, plpgsql_build_datatype(), RangeVarGetRelid, and strVal.

1807 {
1808  Oid classOid;
1809  RangeVar *relvar;
1810  MemoryContext oldCxt;
1811 
1812  /*
1813  * As above, this is a relation lookup but could be a type lookup if we
1814  * weren't being backwards-compatible about error wording.
1815  */
1816  if (list_length(idents) != 2)
1817  return NULL;
1818 
1819  /* Avoid memory leaks in long-term function context */
1821 
1822  /* Look up relation name. Can't lock it - we might not have privileges. */
1823  relvar = makeRangeVar(strVal(linitial(idents)),
1824  strVal(lsecond(idents)),
1825  -1);
1826  classOid = RangeVarGetRelid(relvar, NoLock, false);
1827 
1828  MemoryContextSwitchTo(oldCxt);
1829 
1830  /* Build and return the row type struct */
1831  return plpgsql_build_datatype(get_rel_type_id(classOid), -1, InvalidOid,
1832  makeTypeNameFromNameList(idents));
1833 }
#define RangeVarGetRelid(relation, lockmode, missing_ok)
Definition: namespace.h:78
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
#define strVal(v)
Definition: value.h:54
unsigned int Oid
Definition: postgres_ext.h:31
#define lsecond(l)
Definition: pg_list.h:200
#define linitial(l)
Definition: pg_list.h:195
#define NoLock
Definition: lockdefs.h:34
PLpgSQL_type * plpgsql_build_datatype(Oid typeOid, int32 typmod, Oid collation, TypeName *origtypname)
Definition: pl_comp.c:2049
Oid get_rel_type_id(Oid relid)
Definition: lsyscache.c:1891
#define InvalidOid
Definition: postgres_ext.h:36
static int list_length(const List *l)
Definition: pg_list.h:169
TypeName * makeTypeNameFromNameList(List *names)
Definition: makefuncs.c:454
MemoryContext plpgsql_compile_tmp_cxt
Definition: pl_comp.c:55
RangeVar * makeRangeVar(char *schemaname, char *relname, int location)
Definition: makefuncs.c:420

◆ plpgsql_parse_cwordtype()

PLpgSQL_type* plpgsql_parse_cwordtype ( List idents)

Definition at line 1658 of file pl_comp.c.

References build_datatype(), elog, ERROR, GETSTRUCT, HeapTupleIsValid, PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, linitial, list_length(), lsecond, lthird, makeRangeVar(), MemoryContextSwitchTo(), NoLock, ObjectIdGetDatum, OidIsValid, plpgsql_ns_lookup(), plpgsql_ns_top(), PLPGSQL_NSTYPE_VAR, RangeVarGetRelid, ReleaseSysCache(), RelnameGetRelid(), RELOID, SearchSysCache1(), SearchSysCacheAttName(), strVal, and TYPEOID.

1659 {
1660  PLpgSQL_type *dtype = NULL;
1661  PLpgSQL_nsitem *nse;
1662  const char *fldname;
1663  Oid classOid;
1664  HeapTuple classtup = NULL;
1665  HeapTuple attrtup = NULL;
1666  HeapTuple typetup = NULL;
1667  Form_pg_class classStruct;
1668  Form_pg_attribute attrStruct;
1669  MemoryContext oldCxt;
1670 
1671  /* Avoid memory leaks in the long-term function context */
1673 
1674  if (list_length(idents) == 2)
1675  {
1676  /*
1677  * Do a lookup in the current namespace stack. We don't need to check
1678  * number of names matched, because we will only consider scalar
1679  * variables.
1680  */
1681  nse = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1682  strVal(linitial(idents)),
1683  strVal(lsecond(idents)),
1684  NULL,
1685  NULL);
1686 
1687  if (nse != NULL && nse->itemtype == PLPGSQL_NSTYPE_VAR)
1688  {
1689  dtype = ((PLpgSQL_var *) (plpgsql_Datums[nse->itemno]))->datatype;
1690  goto done;
1691  }
1692 
1693  /*
1694  * First word could also be a table name
1695  */
1696  classOid = RelnameGetRelid(strVal(linitial(idents)));
1697  if (!OidIsValid(classOid))
1698  goto done;
1699  fldname = strVal(lsecond(idents));
1700  }
1701  else if (list_length(idents) == 3)
1702  {
1703  RangeVar *relvar;
1704 
1705  relvar = makeRangeVar(strVal(linitial(idents)),
1706  strVal(lsecond(idents)),
1707  -1);
1708  /* Can't lock relation - we might not have privileges. */
1709  classOid = RangeVarGetRelid(relvar, NoLock, true);
1710  if (!OidIsValid(classOid))
1711  goto done;
1712  fldname = strVal(lthird(idents));
1713  }
1714  else
1715  goto done;
1716 
1717  classtup = SearchSysCache1(RELOID, ObjectIdGetDatum(classOid));
1718  if (!HeapTupleIsValid(classtup))
1719  goto done;
1720  classStruct = (Form_pg_class) GETSTRUCT(classtup);
1721 
1722  /*
1723  * It must be a relation, sequence, view, materialized view, composite
1724  * type, or foreign table
1725  */
1726  if (classStruct->relkind != RELKIND_RELATION &&
1727  classStruct->relkind != RELKIND_SEQUENCE &&
1728  classStruct->relkind != RELKIND_VIEW &&
1729  classStruct->relkind != RELKIND_MATVIEW &&
1730  classStruct->relkind != RELKIND_COMPOSITE_TYPE &&
1731  classStruct->relkind != RELKIND_FOREIGN_TABLE &&
1732  classStruct->relkind != RELKIND_PARTITIONED_TABLE)
1733  goto done;
1734 
1735  /*
1736  * Fetch the named table field and its type
1737  */
1738  attrtup = SearchSysCacheAttName(classOid, fldname);
1739  if (!HeapTupleIsValid(attrtup))
1740  goto done;
1741  attrStruct = (Form_pg_attribute) GETSTRUCT(attrtup);
1742 
1743  typetup = SearchSysCache1(TYPEOID,
1744  ObjectIdGetDatum(attrStruct->atttypid));
1745  if (!HeapTupleIsValid(typetup))
1746  elog(ERROR, "cache lookup failed for type %u", attrStruct->atttypid);
1747 
1748  /*
1749  * Found that - build a compiler type struct in the caller's cxt and
1750  * return it. Note that we treat the type as being found-by-OID; no
1751  * attempt to re-look-up the type name will happen during invalidations.
1752  */
1753  MemoryContextSwitchTo(oldCxt);
1754  dtype = build_datatype(typetup,
1755  attrStruct->atttypmod,
1756  attrStruct->attcollation,
1757  NULL);
1759 
1760 done:
1761  if (HeapTupleIsValid(classtup))
1762  ReleaseSysCache(classtup);
1763  if (HeapTupleIsValid(attrtup))
1764  ReleaseSysCache(attrtup);
1765  if (HeapTupleIsValid(typetup))
1766  ReleaseSysCache(typetup);
1767 
1768  MemoryContextSwitchTo(oldCxt);
1769  return dtype;
1770 }
PLpgSQL_datum ** plpgsql_Datums
Definition: pl_comp.c:45
PLpgSQL_nsitem * plpgsql_ns_top(void)
Definition: pl_funcs.c:81
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
Oid RelnameGetRelid(const char *relname)
Definition: namespace.c:680
static PLpgSQL_type * build_datatype(HeapTuple typeTup, int32 typmod, Oid collation, TypeName *origtypname)
Definition: pl_comp.c:2071
#define RangeVarGetRelid(relation, lockmode, missing_ok)
Definition: namespace.h:78
PLpgSQL_nsitem * plpgsql_ns_lookup(PLpgSQL_nsitem *ns_cur, bool localmode, const char *name1, const char *name2, const char *name3, int *names_used)
Definition: pl_funcs.c:130
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
#define strVal(v)
Definition: value.h:54
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:644
#define lsecond(l)
Definition: pg_list.h:200
#define linitial(l)
Definition: pg_list.h:195
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
#define NoLock
Definition: lockdefs.h:34
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:193
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1116
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1164
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
static int list_length(const List *l)
Definition: pg_list.h:169
HeapTuple SearchSysCacheAttName(Oid relid, const char *attname)
Definition: syscache.c:1257
FormData_pg_class * Form_pg_class
Definition: pg_class.h:153
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453
#define elog(elevel,...)
Definition: elog.h:214
MemoryContext plpgsql_compile_tmp_cxt
Definition: pl_comp.c:55
#define lthird(l)
Definition: pg_list.h:205
RangeVar * makeRangeVar(char *schemaname, char *relname, int location)
Definition: makefuncs.c:420

◆ plpgsql_parse_dblword()

bool plpgsql_parse_dblword ( char *  word1,
char *  word2,
PLwdatum wdatum,
PLcword cword 
)

Definition at line 1444 of file pl_comp.c.

References PLwdatum::datum, PLwdatum::ident, IDENTIFIER_LOOKUP_DECLARE, PLcword::idents, PLwdatum::idents, PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, list_make2, makeString(), plpgsql_build_recfield(), plpgsql_IdentifierLookup, plpgsql_ns_lookup(), plpgsql_ns_top(), PLPGSQL_NSTYPE_REC, PLPGSQL_NSTYPE_VAR, and PLwdatum::quoted.

Referenced by plpgsql_yylex().

1446 {
1447  PLpgSQL_nsitem *ns;
1448  List *idents;
1449  int nnames;
1450 
1451  idents = list_make2(makeString(word1),
1452  makeString(word2));
1453 
1454  /*
1455  * We should do nothing in DECLARE sections. In SQL expressions, we
1456  * really only need to make sure that RECFIELD datums are created when
1457  * needed.
1458  */
1460  {
1461  /*
1462  * Do a lookup in the current namespace stack
1463  */
1464  ns = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1465  word1, word2, NULL,
1466  &nnames);
1467  if (ns != NULL)
1468  {
1469  switch (ns->itemtype)
1470  {
1471  case PLPGSQL_NSTYPE_VAR:
1472  /* Block-qualified reference to scalar variable. */
1473  wdatum->datum = plpgsql_Datums[ns->itemno];
1474  wdatum->ident = NULL;
1475  wdatum->quoted = false; /* not used */
1476  wdatum->idents = idents;
1477  return true;
1478 
1479  case PLPGSQL_NSTYPE_REC:
1480  if (nnames == 1)
1481  {
1482  /*
1483  * First word is a record name, so second word could
1484  * be a field in this record. We build a RECFIELD
1485  * datum whether it is or not --- any error will be
1486  * detected later.
1487  */
1488  PLpgSQL_rec *rec;
1489  PLpgSQL_recfield *new;
1490 
1491  rec = (PLpgSQL_rec *) (plpgsql_Datums[ns->itemno]);
1492  new = plpgsql_build_recfield(rec, word2);
1493 
1494  wdatum->datum = (PLpgSQL_datum *) new;
1495  }
1496  else
1497  {
1498  /* Block-qualified reference to record variable. */
1499  wdatum->datum = plpgsql_Datums[ns->itemno];
1500  }
1501  wdatum->ident = NULL;
1502  wdatum->quoted = false; /* not used */
1503  wdatum->idents = idents;
1504  return true;
1505 
1506  default:
1507  break;
1508  }
1509  }
1510  }
1511 
1512  /* Nothing found */
1513  cword->idents = idents;
1514  return false;
1515 }
#define list_make2(x1, x2)
Definition: pg_list.h:229
Value * makeString(char *str)
Definition: value.c:53
PLpgSQL_datum ** plpgsql_Datums
Definition: pl_comp.c:45
PLpgSQL_nsitem * plpgsql_ns_top(void)
Definition: pl_funcs.c:81
PLpgSQL_nsitem * plpgsql_ns_lookup(PLpgSQL_nsitem *ns_cur, bool localmode, const char *name1, const char *name2, const char *name3, int *names_used)
Definition: pl_funcs.c:130
PLpgSQL_recfield * plpgsql_build_recfield(PLpgSQL_rec *rec, const char *fldname)
Definition: pl_comp.c:2002
List * idents
Definition: plpgsql.h:1175
List * idents
Definition: plpgsql.h:1183
IdentifierLookup plpgsql_IdentifierLookup
Definition: pl_scanner.c:26
PLpgSQL_datum * datum
Definition: plpgsql.h:1180
bool quoted
Definition: plpgsql.h:1182
char * ident
Definition: plpgsql.h:1181
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453
Definition: pg_list.h:50

◆ plpgsql_parse_err_condition()

PLpgSQL_condition* plpgsql_parse_err_condition ( char *  condname)

Definition at line 2223 of file pl_comp.c.

References ereport, errcode(), errmsg(), ERROR, i, ExceptionLabelMap::label, label, palloc(), and ExceptionLabelMap::sqlerrstate.

2224 {
2225  int i;
2226  PLpgSQL_condition *new;
2227  PLpgSQL_condition *prev;
2228 
2229  /*
2230  * XXX Eventually we will want to look for user-defined exception names
2231  * here.
2232  */
2233 
2234  /*
2235  * OTHERS is represented as code 0 (which would map to '00000', but we
2236  * have no need to represent that as an exception condition).
2237  */
2238  if (strcmp(condname, "others") == 0)
2239  {
2240  new = palloc(sizeof(PLpgSQL_condition));
2241  new->sqlerrstate = 0;
2242  new->condname = condname;
2243  new->next = NULL;
2244  return new;
2245  }
2246 
2247  prev = NULL;
2248  for (i = 0; exception_label_map[i].label != NULL; i++)
2249  {
2250  if (strcmp(condname, exception_label_map[i].label) == 0)
2251  {
2252  new = palloc(sizeof(PLpgSQL_condition));
2253  new->sqlerrstate = exception_label_map[i].sqlerrstate;
2254  new->condname = condname;
2255  new->next = prev;
2256  prev = new;
2257  }
2258  }
2259 
2260  if (!prev)
2261  ereport(ERROR,
2262  (errcode(ERRCODE_UNDEFINED_OBJECT),
2263  errmsg("unrecognized exception condition \"%s\"",
2264  condname)));
2265 
2266  return prev;
2267 }
const char * label
Definition: pl_comp.c:77
int errcode(int sqlerrcode)
Definition: elog.c:610
#define ERROR
Definition: elog.h:43
static char * label
#define ereport(elevel,...)
Definition: elog.h:144
static const ExceptionLabelMap exception_label_map[]
Definition: pl_comp.c:81
void * palloc(Size size)
Definition: mcxt.c:949
int errmsg(const char *fmt,...)
Definition: elog.c:824
int i

◆ plpgsql_parse_tripword()

bool plpgsql_parse_tripword ( char *  word1,
char *  word2,
char *  word3,
PLwdatum wdatum,
PLcword cword 
)

Definition at line 1524 of file pl_comp.c.

References PLwdatum::datum, PLwdatum::ident, IDENTIFIER_LOOKUP_DECLARE, PLcword::idents, PLwdatum::idents, PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, list_make3, makeString(), plpgsql_build_recfield(), plpgsql_IdentifierLookup, plpgsql_ns_lookup(), plpgsql_ns_top(), PLPGSQL_NSTYPE_REC, and PLwdatum::quoted.

Referenced by plpgsql_yylex().

1526 {
1527  PLpgSQL_nsitem *ns;
1528  List *idents;
1529  int nnames;
1530 
1531  idents = list_make3(makeString(word1),
1532  makeString(word2),
1533  makeString(word3));
1534 
1535  /*
1536  * We should do nothing in DECLARE sections. In SQL expressions, we
1537  * really only need to make sure that RECFIELD datums are created when
1538  * needed.
1539  */
1541  {
1542  /*
1543  * Do a lookup in the current namespace stack. Must find a qualified
1544  * reference, else ignore.
1545  */
1546  ns = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1547  word1, word2, word3,
1548  &nnames);
1549  if (ns != NULL && nnames == 2)
1550  {
1551  switch (ns->itemtype)
1552  {
1553  case PLPGSQL_NSTYPE_REC:
1554  {
1555  /*
1556  * words 1/2 are a record name, so third word could be
1557  * a field in this record.
1558  */
1559  PLpgSQL_rec *rec;
1560  PLpgSQL_recfield *new;
1561 
1562  rec = (PLpgSQL_rec *) (plpgsql_Datums[ns->itemno]);
1563  new = plpgsql_build_recfield(rec, word3);
1564 
1565  wdatum->datum = (PLpgSQL_datum *) new;
1566  wdatum->ident = NULL;
1567  wdatum->quoted = false; /* not used */
1568  wdatum->idents = idents;
1569  return true;
1570  }
1571 
1572  default:
1573  break;
1574  }
1575  }
1576  }
1577 
1578  /* Nothing found */
1579  cword->idents = idents;
1580  return false;
1581 }
Value * makeString(char *str)
Definition: value.c:53
#define list_make3(x1, x2, x3)
Definition: pg_list.h:231
PLpgSQL_datum ** plpgsql_Datums
Definition: pl_comp.c:45
PLpgSQL_nsitem * plpgsql_ns_top(void)
Definition: pl_funcs.c:81
PLpgSQL_nsitem * plpgsql_ns_lookup(PLpgSQL_nsitem *ns_cur, bool localmode, const char *name1, const char *name2, const char *name3, int *names_used)
Definition: pl_funcs.c:130
PLpgSQL_recfield * plpgsql_build_recfield(PLpgSQL_rec *rec, const char *fldname)
Definition: pl_comp.c:2002
List * idents
Definition: plpgsql.h:1175
List * idents
Definition: plpgsql.h:1183
IdentifierLookup plpgsql_IdentifierLookup
Definition: pl_scanner.c:26
PLpgSQL_datum * datum
Definition: plpgsql.h:1180
bool quoted
Definition: plpgsql.h:1182
char * ident
Definition: plpgsql.h:1181
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453
Definition: pg_list.h:50

◆ plpgsql_parse_word()

bool plpgsql_parse_word ( char *  word1,
const char *  yytxt,
bool  lookup,
PLwdatum wdatum,
PLword word 
)

Definition at line 1389 of file pl_comp.c.

References PLwdatum::datum, elog, ERROR, PLword::ident, PLwdatum::ident, IDENTIFIER_LOOKUP_NORMAL, PLwdatum::idents, PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, NIL, plpgsql_IdentifierLookup, plpgsql_ns_lookup(), plpgsql_ns_top(), PLPGSQL_NSTYPE_REC, PLPGSQL_NSTYPE_VAR, PLword::quoted, and PLwdatum::quoted.

Referenced by plpgsql_yylex().

1391 {
1392  PLpgSQL_nsitem *ns;
1393 
1394  /*
1395  * We should not lookup variables in DECLARE sections. In SQL
1396  * expressions, there's no need to do so either --- lookup will happen
1397  * when the expression is compiled.
1398  */
1400  {
1401  /*
1402  * Do a lookup in the current namespace stack
1403  */
1404  ns = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1405  word1, NULL, NULL,
1406  NULL);
1407 
1408  if (ns != NULL)
1409  {
1410  switch (ns->itemtype)
1411  {
1412  case PLPGSQL_NSTYPE_VAR:
1413  case PLPGSQL_NSTYPE_REC:
1414  wdatum->datum = plpgsql_Datums[ns->itemno];
1415  wdatum->ident = word1;
1416  wdatum->quoted = (yytxt[0] == '"');
1417  wdatum->idents = NIL;
1418  return true;
1419 
1420  default:
1421  /* plpgsql_ns_lookup should never return anything else */
1422  elog(ERROR, "unrecognized plpgsql itemtype: %d",
1423  ns->itemtype);
1424  }
1425  }
1426  }
1427 
1428  /*
1429  * Nothing found - up to now it's a word without any special meaning for
1430  * us.
1431  */
1432  word->ident = word1;
1433  word->quoted = (yytxt[0] == '"');
1434  return false;
1435 }
#define NIL
Definition: pg_list.h:65
PLpgSQL_datum ** plpgsql_Datums
Definition: pl_comp.c:45
PLpgSQL_nsitem * plpgsql_ns_top(void)
Definition: pl_funcs.c:81
PLpgSQL_nsitem * plpgsql_ns_lookup(PLpgSQL_nsitem *ns_cur, bool localmode, const char *name1, const char *name2, const char *name3, int *names_used)
Definition: pl_funcs.c:130
char * ident
Definition: plpgsql.h:1169
#define ERROR
Definition: elog.h:43
Definition: zic.c:298
List * idents
Definition: plpgsql.h:1183
IdentifierLookup plpgsql_IdentifierLookup
Definition: pl_scanner.c:26
bool quoted
Definition: plpgsql.h:1170
PLpgSQL_datum * datum
Definition: plpgsql.h:1180
bool quoted
Definition: plpgsql.h:1182
char * ident
Definition: plpgsql.h:1181
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453
#define elog(elevel,...)
Definition: elog.h:214

◆ plpgsql_parse_wordrowtype()

PLpgSQL_type* plpgsql_parse_wordrowtype ( char *  ident)

Definition at line 1778 of file pl_comp.c.

References ereport, errcode(), ERRCODE_UNDEFINED_TABLE, errmsg(), ERROR, get_rel_type_id(), InvalidOid, makeTypeName(), OidIsValid, plpgsql_build_datatype(), and RelnameGetRelid().

1779 {
1780  Oid classOid;
1781 
1782  /*
1783  * Look up the relation. Note that because relation rowtypes have the
1784  * same names as their relations, this could be handled as a type lookup
1785  * equally well; we use the relation lookup code path only because the
1786  * errors thrown here have traditionally referred to relations not types.
1787  * But we'll make a TypeName in case we have to do re-look-up of the type.
1788  */
1789  classOid = RelnameGetRelid(ident);
1790  if (!OidIsValid(classOid))
1791  ereport(ERROR,
1793  errmsg("relation \"%s\" does not exist", ident)));
1794 
1795  /* Build and return the row type struct */
1796  return plpgsql_build_datatype(get_rel_type_id(classOid), -1, InvalidOid,
1797  makeTypeName(ident));
1798 }
#define ERRCODE_UNDEFINED_TABLE
Definition: pgbench.c:73
Oid RelnameGetRelid(const char *relname)
Definition: namespace.c:680
int errcode(int sqlerrcode)
Definition: elog.c:610
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:644
#define ERROR
Definition: elog.h:43
PLpgSQL_type * plpgsql_build_datatype(Oid typeOid, int32 typmod, Oid collation, TypeName *origtypname)
Definition: pl_comp.c:2049
Oid get_rel_type_id(Oid relid)
Definition: lsyscache.c:1891
#define InvalidOid
Definition: postgres_ext.h:36
TypeName * makeTypeName(char *typnam)
Definition: makefuncs.c:442
#define ereport(elevel,...)
Definition: elog.h:144
int errmsg(const char *fmt,...)
Definition: elog.c:824

◆ plpgsql_parse_wordtype()

PLpgSQL_type* plpgsql_parse_wordtype ( char *  ident)

Definition at line 1592 of file pl_comp.c.

References build_datatype(), PLpgSQL_function::fn_input_collation, GETSTRUCT, InvalidOid, PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, LookupTypeName(), makeTypeName(), plpgsql_ns_lookup(), plpgsql_ns_top(), PLPGSQL_NSTYPE_VAR, and ReleaseSysCache().

1593 {
1594  PLpgSQL_type *dtype;
1595  PLpgSQL_nsitem *nse;
1596  TypeName *typeName;
1597  HeapTuple typeTup;
1598 
1599  /*
1600  * Do a lookup in the current namespace stack
1601  */
1602  nse = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1603  ident, NULL, NULL,
1604  NULL);
1605 
1606  if (nse != NULL)
1607  {
1608  switch (nse->itemtype)
1609  {
1610  case PLPGSQL_NSTYPE_VAR:
1611  return ((PLpgSQL_var *) (plpgsql_Datums[nse->itemno]))->datatype;
1612 
1613  /* XXX perhaps allow REC/ROW here? */
1614 
1615  default:
1616  return NULL;
1617  }
1618  }
1619 
1620  /*
1621  * Word wasn't found in the namespace stack. Try to find a data type with
1622  * that name, but ignore shell types and complex types.
1623  */
1624  typeName = makeTypeName(ident);
1625  typeTup = LookupTypeName(NULL, typeName, NULL, false);
1626  if (typeTup)
1627  {
1628  Form_pg_type typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
1629 
1630  if (!typeStruct->typisdefined ||
1631  typeStruct->typrelid != InvalidOid)
1632  {
1633  ReleaseSysCache(typeTup);
1634  return NULL;
1635  }
1636 
1637  dtype = build_datatype(typeTup, -1,
1639  typeName);
1640 
1641  ReleaseSysCache(typeTup);
1642  return dtype;
1643  }
1644 
1645  /*
1646  * Nothing found - up to now it's a word without any special meaning for
1647  * us.
1648  */
1649  return NULL;
1650 }
Type LookupTypeName(ParseState *pstate, const TypeName *typeName, int32 *typmod_p, bool missing_ok)
Definition: parse_type.c:38
PLpgSQL_datum ** plpgsql_Datums
Definition: pl_comp.c:45
PLpgSQL_nsitem * plpgsql_ns_top(void)
Definition: pl_funcs.c:81
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
static PLpgSQL_type * build_datatype(HeapTuple typeTup, int32 typmod, Oid collation, TypeName *origtypname)
Definition: pl_comp.c:2071
PLpgSQL_nsitem * plpgsql_ns_lookup(PLpgSQL_nsitem *ns_cur, bool localmode, const char *name1, const char *name2, const char *name3, int *names_used)
Definition: pl_funcs.c:130
Oid fn_input_collation
Definition: plpgsql.h:998
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1164
#define InvalidOid
Definition: postgres_ext.h:36
TypeName * makeTypeName(char *typnam)
Definition: makefuncs.c:442
FormData_pg_type * Form_pg_type
Definition: pg_type.h:255
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:453
PLpgSQL_function * plpgsql_curr_compile
Definition: pl_comp.c:52

◆ plpgsql_parser_setup()

void plpgsql_parser_setup ( struct ParseState pstate,
PLpgSQL_expr expr 
)

Definition at line 1074 of file pl_comp.c.

References ParseState::p_paramref_hook, ParseState::p_post_columnref_hook, ParseState::p_pre_columnref_hook, ParseState::p_ref_hook_state, plpgsql_param_ref(), plpgsql_post_column_ref(), and plpgsql_pre_column_ref().

Referenced by exec_prepare_plan(), and plpgsql_estate_setup().

1075 {
1079  /* no need to use p_coerce_param_hook */
1080  pstate->p_ref_hook_state = (void *) expr;
1081 }
static Node * plpgsql_pre_column_ref(ParseState *pstate, ColumnRef *cref)
Definition: pl_comp.c:1087
PostParseColumnRefHook p_post_columnref_hook
Definition: parse_node.h:219
ParseParamRefHook p_paramref_hook
Definition: parse_node.h:220
static Node * plpgsql_param_ref(ParseState *pstate, ParamRef *pref)
Definition: pl_comp.c:1145
void * p_ref_hook_state
Definition: parse_node.h:222
PreParseColumnRefHook p_pre_columnref_hook
Definition: parse_node.h:218
static Node * plpgsql_post_column_ref(ParseState *pstate, ColumnRef *cref, Node *var)
Definition: pl_comp.c:1101

◆ plpgsql_peek()

int plpgsql_peek ( void  )

Definition at line 420 of file pl_scanner.c.

References internal_yylex(), and push_back_token().

421 {
422  int tok1;
423  TokenAuxData aux1;
424 
425  tok1 = internal_yylex(&aux1);
426  push_back_token(tok1, &aux1);
427  return tok1;
428 }
static int internal_yylex(TokenAuxData *auxdata)
Definition: pl_scanner.c:308
static void push_back_token(int token, TokenAuxData *auxdata)
Definition: pl_scanner.c:354

◆ plpgsql_peek2()

void plpgsql_peek2 ( int *  tok1_p,
int *  tok2_p,
int *  tok1_loc,
int *  tok2_loc 
)

Definition at line 439 of file pl_scanner.c.

References internal_yylex(), TokenAuxData::lloc, and push_back_token().

440 {
441  int tok1,
442  tok2;
443  TokenAuxData aux1,
444  aux2;
445 
446  tok1 = internal_yylex(&aux1);
447  tok2 = internal_yylex(&aux2);
448 
449  *tok1_p = tok1;
450  if (tok1_loc)
451  *tok1_loc = aux1.lloc;
452  *tok2_p = tok2;
453  if (tok2_loc)
454  *tok2_loc = aux2.lloc;
455 
456  push_back_token(tok2, &aux2);
457  push_back_token(tok1, &aux1);
458 }
YYLTYPE lloc
Definition: pl_scanner.c:94
static int internal_yylex(TokenAuxData *auxdata)
Definition: pl_scanner.c:308
static void push_back_token(int token, TokenAuxData *auxdata)
Definition: pl_scanner.c:354

◆ plpgsql_push_back_token()

void plpgsql_push_back_token ( int  token)

Definition at line 370 of file pl_scanner.c.

References TokenAuxData::leng, TokenAuxData::lloc, TokenAuxData::lval, plpgsql_yyleng, and push_back_token().

371 {
372  TokenAuxData auxdata;
373 
374  auxdata.lval = plpgsql_yylval;
375  auxdata.lloc = plpgsql_yylloc;
376  auxdata.leng = plpgsql_yyleng;
377  push_back_token(token, &auxdata);
378 }
YYLTYPE lloc
Definition: pl_scanner.c:94
YYSTYPE lval
Definition: pl_scanner.c:93
static int plpgsql_yyleng
Definition: pl_scanner.c:113
static void push_back_token(int token, TokenAuxData *auxdata)
Definition: pl_scanner.c:354

◆ plpgsql_recognize_err_condition()

int plpgsql_recognize_err_condition ( const char *  condname,
bool  allow_sqlstate 
)

Definition at line 2187 of file pl_comp.c.

References ereport, errcode(), errmsg(), ERROR, i, ExceptionLabelMap::label, label, MAKE_SQLSTATE, and ExceptionLabelMap::sqlerrstate.

Referenced by exec_stmt_raise().

2188 {
2189  int i;
2190 
2191  if (allow_sqlstate)
2192  {
2193  if (strlen(condname) == 5 &&
2194  strspn(condname, "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ") == 5)
2195  return MAKE_SQLSTATE(condname[0],
2196  condname[1],
2197  condname[2],
2198  condname[3],
2199  condname[4]);
2200  }
2201 
2202  for (i = 0; exception_label_map[i].label != NULL; i++)
2203  {
2204  if (strcmp(condname, exception_label_map[i].label) == 0)
2206  }
2207 
2208  ereport(ERROR,
2209  (errcode(ERRCODE_UNDEFINED_OBJECT),
2210  errmsg("unrecognized exception condition \"%s\"",
2211  condname)));
2212  return 0; /* keep compiler quiet */
2213 }
const char * label
Definition: pl_comp.c:77
#define MAKE_SQLSTATE(ch1, ch2, ch3, ch4, ch5)
Definition: elog.h:62
int errcode(int sqlerrcode)
Definition: elog.c:610
#define ERROR
Definition: elog.h:43
static char * label
#define ereport(elevel,...)
Definition: elog.h:144
static const ExceptionLabelMap exception_label_map[]
Definition: pl_comp.c:81
int errmsg(const char *fmt,...)
Definition: elog.c:824
int i

◆ plpgsql_scanner_errposition()

int plpgsql_scanner_errposition ( int  location)

Definition at line 472 of file pl_scanner.c.

References internalerrposition(), internalerrquery(), pg_mbstrlen_with_len(), and scanorig.

Referenced by plpgsql_yyerror().

473 {
474  int pos;
475 
476  if (location < 0 || scanorig == NULL)
477  return 0; /* no-op if location is unknown */
478 
479  /* Convert byte offset to character number */
480  pos = pg_mbstrlen_with_len(scanorig, location) + 1;
481  /* And pass it to the ereport mechanism */
482  (void) internalerrposition(pos);
483  /* Also pass the function body string */
484  return internalerrquery(scanorig);
485 }
int pg_mbstrlen_with_len(const char *mbstr, int limit)
Definition: mbutils.c:941
static const char * scanorig
Definition: pl_scanner.c:110
int internalerrquery(const char *query)
Definition: elog.c:1235
int internalerrposition(int cursorpos)
Definition: elog.c:1215

◆ plpgsql_scanner_finish()

void plpgsql_scanner_finish ( void  )

Definition at line 613 of file pl_scanner.c.

References scanner_finish(), scanorig, and yyscanner.

Referenced by do_compile(), and plpgsql_compile_inline().

614 {
615  /* release storage */
617  /* avoid leaving any dangling pointers */
618  yyscanner = NULL;
619  scanorig = NULL;
620 }
static const char * scanorig
Definition: pl_scanner.c:110
static core_yyscan_t yyscanner
Definition: pl_scanner.c:106
void scanner_finish(core_yyscan_t yyscanner)

◆ plpgsql_scanner_init()

void plpgsql_scanner_init ( const char *  str)

Definition at line 586 of file pl_scanner.c.

References IDENTIFIER_LOOKUP_NORMAL, location_lineno_init(), num_pushbacks, plpgsql_IdentifierLookup, plpgsql_yytoken, ReservedPLKeywordTokens, scanner_init(), scanorig, generate_unaccent_rules::str, and yyscanner.

Referenced by do_compile(), and plpgsql_compile_inline().

587 {
588  /* Start up the core scanner */
590  &ReservedPLKeywords, ReservedPLKeywordTokens);
591 
592  /*
593  * scanorig points to the original string, which unlike the scanner's
594  * scanbuf won't be modified on-the-fly by flex. Notice that although
595  * yytext points into scanbuf, we rely on being able to apply locations
596  * (offsets from string start) to scanorig as well.
597  */
598  scanorig = str;
599 
600  /* Other setup */
602  plpgsql_yytoken = 0;
603 
604  num_pushbacks = 0;
605 
607 }
static void location_lineno_init(void)
Definition: pl_scanner.c:562
static int plpgsql_yytoken
Definition: pl_scanner.c:116
core_yyscan_t scanner_init(const char *str, core_yy_extra_type *yyext, const ScanKeywordList *keywordlist, const uint16 *keyword_tokens)
static const char * scanorig
Definition: pl_scanner.c:110
IdentifierLookup plpgsql_IdentifierLookup
Definition: pl_scanner.c:26
static int num_pushbacks
Definition: pl_scanner.c:121
static core_yy_extra_type core_yy
Definition: pl_scanner.c:107
static const uint16 ReservedPLKeywordTokens[]
Definition: pl_scanner.c:66
static core_yyscan_t yyscanner
Definition: pl_scanner.c:106

◆ plpgsql_stmt_typename()

const char* plpgsql_stmt_typename ( PLpgSQL_stmt stmt)

Definition at line 232 of file pl_funcs.c.

References _, PLpgSQL_stmt::cmd_type, PLPGSQL_STMT_ASSERT, PLPGSQL_STMT_ASSIGN, PLPGSQL_STMT_BLOCK, PLPGSQL_STMT_CALL, PLPGSQL_STMT_CASE, PLPGSQL_STMT_CLOSE, PLPGSQL_STMT_COMMIT, PLPGSQL_STMT_DYNEXECUTE, PLPGSQL_STMT_DYNFORS, PLPGSQL_STMT_EXECSQL, PLPGSQL_STMT_EXIT, PLPGSQL_STMT_FETCH, PLPGSQL_STMT_FORC, PLPGSQL_STMT_FOREACH_A, PLPGSQL_STMT_FORI, PLPGSQL_STMT_FORS, PLPGSQL_STMT_GETDIAG, PLPGSQL_STMT_IF, PLPGSQL_STMT_LOOP, PLPGSQL_STMT_OPEN, PLPGSQL_STMT_PERFORM, PLPGSQL_STMT_RAISE, PLPGSQL_STMT_RETURN, PLPGSQL_STMT_RETURN_NEXT, PLPGSQL_STMT_RETURN_QUERY, PLPGSQL_STMT_ROLLBACK, PLPGSQL_STMT_SET, and PLPGSQL_STMT_WHILE.

Referenced by plpgsql_exec_error_callback().

233 {
234  switch (stmt->cmd_type)
235  {
236  case PLPGSQL_STMT_BLOCK:
237  return _("statement block");
238  case PLPGSQL_STMT_ASSIGN:
239  return _("assignment");
240  case PLPGSQL_STMT_IF:
241  return "IF";
242  case PLPGSQL_STMT_CASE:
243  return "CASE";
244  case PLPGSQL_STMT_LOOP:
245  return "LOOP";
246  case PLPGSQL_STMT_WHILE:
247  return "WHILE";
248  case PLPGSQL_STMT_FORI:
249  return _("FOR with integer loop variable");
250  case PLPGSQL_STMT_FORS:
251  return _("FOR over SELECT rows");
252  case PLPGSQL_STMT_FORC:
253  return _("FOR over cursor");
255  return _("FOREACH over array");
256  case PLPGSQL_STMT_EXIT:
257  return ((PLpgSQL_stmt_exit *) stmt)->is_exit ? "EXIT" : "CONTINUE";
258  case PLPGSQL_STMT_RETURN:
259  return "RETURN";
261  return "RETURN NEXT";
263  return "RETURN QUERY";
264  case PLPGSQL_STMT_RAISE:
265  return "RAISE";
266  case PLPGSQL_STMT_ASSERT:
267  return "ASSERT";
269  return _("SQL statement");
271  return "EXECUTE";
273  return _("FOR over EXECUTE statement");
275  return ((PLpgSQL_stmt_getdiag *) stmt)->is_stacked ?
276  "GET STACKED DIAGNOSTICS" : "GET DIAGNOSTICS";
277  case PLPGSQL_STMT_OPEN:
278  return "OPEN";
279  case PLPGSQL_STMT_FETCH:
280  return ((PLpgSQL_stmt_fetch *) stmt)->is_move ? "MOVE" : "FETCH";
281  case PLPGSQL_STMT_CLOSE:
282  return "CLOSE";
284  return "PERFORM";
285  case PLPGSQL_STMT_CALL:
286  return ((PLpgSQL_stmt_call *) stmt)->is_call ? "CALL" : "DO";
287  case PLPGSQL_STMT_COMMIT:
288  return "COMMIT";
290  return "ROLLBACK";
291  case PLPGSQL_STMT_SET:
292  return "SET";
293  }
294 
295  return "unknown";
296 }
PLpgSQL_stmt_type cmd_type
Definition: plpgsql.h:469
#define _(x)
Definition: elog.c:88

◆ plpgsql_subxact_cb()

void plpgsql_subxact_cb ( SubXactEvent  event,
SubTransactionId  mySubid,
SubTransactionId  parentSubid,
void *  arg 
)

Definition at line 8453 of file pl_exec.c.

References FreeExprContext(), SimpleEcontextStackEntry::next, pfree(), SimpleEcontextStackEntry::stack_econtext, SUBXACT_EVENT_ABORT_SUB, SUBXACT_EVENT_COMMIT_SUB, and SimpleEcontextStackEntry::xact_subxid.

Referenced by _PG_init(), and plpgsql_inline_handler().

8455 {
8456  if (event == SUBXACT_EVENT_COMMIT_SUB || event == SUBXACT_EVENT_ABORT_SUB)
8457  {
8458  while (simple_econtext_stack != NULL &&
8459  simple_econtext_stack->xact_subxid == mySubid)
8460  {
8462 
8464  (event == SUBXACT_EVENT_COMMIT_SUB));
8465  next = simple_econtext_stack->next;
8468  }
8469  }
8470 }
static int32 next
Definition: blutils.c:218
struct SimpleEcontextStackEntry * next
Definition: pl_exec.c:99
void pfree(void *pointer)
Definition: mcxt.c:1056
ExprContext * stack_econtext
Definition: pl_exec.c:97
static SimpleEcontextStackEntry * simple_econtext_stack
Definition: pl_exec.c:103
SubTransactionId xact_subxid
Definition: pl_exec.c:98
void FreeExprContext(ExprContext *econtext, bool isCommit)
Definition: execUtils.c:416

◆ plpgsql_token_is_unreserved_keyword()

bool plpgsql_token_is_unreserved_keyword ( int  token)

Definition at line 387 of file pl_scanner.c.

References i, lengthof, and UnreservedPLKeywordTokens.

388 {
389  int i;
390 
391  for (i = 0; i < lengthof(UnreservedPLKeywordTokens); i++)
392  {
393  if (UnreservedPLKeywordTokens[i] == token)
394  return true;
395  }
396  return false;
397 }
#define lengthof(array)
Definition: c.h:668
static const uint16 UnreservedPLKeywordTokens[]
Definition: pl_scanner.c:70
int i

◆ plpgsql_xact_cb()

void plpgsql_xact_cb ( XactEvent  event,
void *  arg 
)

Definition at line 8411 of file pl_exec.c.

References FreeExecutorState(), ResourceOwnerReleaseAllPlanCacheRefs(), XACT_EVENT_ABORT, XACT_EVENT_COMMIT, XACT_EVENT_PARALLEL_ABORT, XACT_EVENT_PARALLEL_COMMIT, and XACT_EVENT_PREPARE.

Referenced by _PG_init().

8412 {
8413  /*
8414  * If we are doing a clean transaction shutdown, free the EState and tell
8415  * the resowner to release whatever plancache references it has, so that
8416  * all remaining resources will be released correctly. (We don't need to
8417  * actually delete the resowner here; deletion of the
8418  * TopTransactionResourceOwner will take care of that.)
8419  *
8420  * In an abort, we expect the regular abort recovery procedures to release
8421  * everything of interest, so just clear our pointers.
8422  */
8423  if (event == XACT_EVENT_COMMIT ||
8424  event == XACT_EVENT_PARALLEL_COMMIT ||
8425  event == XACT_EVENT_PREPARE)
8426  {
8427  simple_econtext_stack = NULL;
8428 
8435  }
8436  else if (event == XACT_EVENT_ABORT ||
8437  event == XACT_EVENT_PARALLEL_ABORT)
8438  {
8439  simple_econtext_stack = NULL;
8442  }
8443 }
static ResourceOwner shared_simple_eval_resowner
Definition: pl_exec.c:113
void ResourceOwnerReleaseAllPlanCacheRefs(ResourceOwner owner)
Definition: resowner.c:689
void FreeExecutorState(EState *estate)
Definition: execUtils.c:191
static SimpleEcontextStackEntry * simple_econtext_stack
Definition: pl_exec.c:103
static EState * shared_simple_eval_estate
Definition: pl_exec.c:102

◆ plpgsql_yyerror()

void plpgsql_yyerror ( const char *  message)

Definition at line 499 of file pl_scanner.c.

References _, ereport, errcode(), errmsg(), ERROR, plpgsql_scanner_errposition(), plpgsql_yyleng, and core_yy_extra_type::scanbuf.

500 {
501  char *yytext = core_yy.scanbuf + plpgsql_yylloc;
502 
503  if (*yytext == '\0')
504  {
505  ereport(ERROR,
506  (errcode(ERRCODE_SYNTAX_ERROR),
507  /* translator: %s is typically the translation of "syntax error" */
508  errmsg("%s at end of input", _(message)),
509  plpgsql_scanner_errposition(plpgsql_yylloc)));
510  }
511  else
512  {
513  /*
514  * If we have done any lookahead then flex will have restored the
515  * character after the end-of-token. Zap it again so that we report
516  * only the single token here. This modifies scanbuf but we no longer
517  * care about that.
518  */
519  yytext[plpgsql_yyleng] = '\0';
520 
521  ereport(ERROR,
522  (errcode(ERRCODE_SYNTAX_ERROR),
523  /* translator: first %s is typically the translation of "syntax error" */
524  errmsg("%s at or near \"%s\"", _(message), yytext),
525  plpgsql_scanner_errposition(plpgsql_yylloc)));
526  }
527 }
int errcode(int sqlerrcode)
Definition: elog.c:610
char * scanbuf
Definition: scanner.h:72
#define ERROR
Definition: elog.h:43
#define ereport(elevel,...)
Definition: elog.h:144
static core_yy_extra_type core_yy
Definition: pl_scanner.c:107
static int plpgsql_yyleng
Definition: pl_scanner.c:113
int plpgsql_scanner_errposition(int location)
Definition: pl_scanner.c:472
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define _(x)
Definition: elog.c:88

◆ plpgsql_yylex()

int plpgsql_yylex ( void  )

Definition at line 146 of file pl_scanner.c.

References AT_STMT_START, GetScanKeyword(), internal_yylex(), TokenAuxData::leng, TokenAuxData::lloc, TokenAuxData::lval, plpgsql_parse_dblword(), plpgsql_parse_tripword(), plpgsql_parse_word(), plpgsql_yyleng, plpgsql_yytoken, push_back_token(), core_yy_extra_type::scanbuf, ScanKeywordLookup(), and UnreservedPLKeywordTokens.

147 {
148  int tok1;
149  TokenAuxData aux1;
150  int kwnum;
151 
152  tok1 = internal_yylex(&aux1);
153  if (tok1 == IDENT || tok1 == PARAM)
154  {
155  int tok2;
156  TokenAuxData aux2;
157 
158  tok2 = internal_yylex(&aux2);
159  if (tok2 == '.')
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