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"
Include dependency graph for plpgsql.h:
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

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_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_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_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_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_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
}
 
enum  { PLPGSQL_RC_OK , PLPGSQL_RC_EXIT , PLPGSQL_RC_RETURN , PLPGSQL_RC_CONTINUE }
 
enum  PLpgSQL_getdiag_kind {
  PLPGSQL_GETDIAG_ROW_COUNT , PLPGSQL_GETDIAG_ROUTINE_OID , 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

PGDLLEXPORT PLpgSQL_functionplpgsql_compile (FunctionCallInfo fcinfo, bool forValidator)
 
PLpgSQL_functionplpgsql_compile_inline (char *proc_source)
 
PGDLLEXPORT 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)
 
PGDLLEXPORT PLpgSQL_typeplpgsql_build_datatype (Oid typeOid, int32 typmod, Oid collation, TypeName *origtypname)
 
PLpgSQL_typeplpgsql_build_datatype_arrayof (PLpgSQL_type *dtype)
 
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)
 
PGDLLEXPORT 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)
 
Datum plpgsql_exec_function (PLpgSQL_function *func, FunctionCallInfo fcinfo, EState *simple_eval_estate, ResourceOwner simple_eval_resowner, ResourceOwner procedure_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)
 
PGDLLEXPORT 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)
 
PGDLLEXPORT 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)
 
PGDLLEXPORT 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)
 
int plpgsql_token_length (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 1207 of file plpgsql.h.

◆ PLPGSQL_XCHECK_NONE

#define PLPGSQL_XCHECK_NONE   0

Definition at line 1203 of file plpgsql.h.

◆ PLPGSQL_XCHECK_SHADOWVAR

#define PLPGSQL_XCHECK_SHADOWVAR   (1 << 1)

Definition at line 1204 of file plpgsql.h.

◆ PLPGSQL_XCHECK_STRICTMULTIASSIGNMENT

#define PLPGSQL_XCHECK_STRICTMULTIASSIGNMENT   (1 << 3)

Definition at line 1206 of file plpgsql.h.

◆ PLPGSQL_XCHECK_TOOMANYROWS

#define PLPGSQL_XCHECK_TOOMANYROWS   (1 << 2)

Definition at line 1205 of file plpgsql.h.

◆ TEXTDOMAIN

#define TEXTDOMAIN   PG_TEXTDOMAIN("plpgsql")

Definition at line 33 of file plpgsql.h.

Typedef Documentation

◆ PLcword

typedef struct PLcword PLcword

◆ 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_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 136 of file plpgsql.h.

137 {
142 };
@ PLPGSQL_RC_RETURN
Definition: plpgsql.h:140
@ PLPGSQL_RC_EXIT
Definition: plpgsql.h:139
@ PLPGSQL_RC_OK
Definition: plpgsql.h:138
@ PLPGSQL_RC_CONTINUE
Definition: plpgsql.h:141

◆ IdentifierLookup

Enumerator
IDENTIFIER_LOOKUP_NORMAL 
IDENTIFIER_LOOKUP_DECLARE 
IDENTIFIER_LOOKUP_EXPR 

Definition at line 1187 of file plpgsql.h.

1188 {
1189  IDENTIFIER_LOOKUP_NORMAL, /* normal processing of var names */
1190  IDENTIFIER_LOOKUP_DECLARE, /* In DECLARE --- don't look up names */
1191  IDENTIFIER_LOOKUP_EXPR, /* In SQL expression --- special case */
IdentifierLookup
Definition: plpgsql.h:1188
@ IDENTIFIER_LOOKUP_DECLARE
Definition: plpgsql.h:1190
@ IDENTIFIER_LOOKUP_NORMAL
Definition: plpgsql.h:1189
@ IDENTIFIER_LOOKUP_EXPR
Definition: plpgsql.h:1191

◆ PLpgSQL_datum_type

Enumerator
PLPGSQL_DTYPE_VAR 
PLPGSQL_DTYPE_ROW 
PLPGSQL_DTYPE_REC 
PLPGSQL_DTYPE_RECFIELD 
PLPGSQL_DTYPE_PROMISE 

Definition at line 61 of file plpgsql.h.

62 {
PLpgSQL_datum_type
Definition: plpgsql.h:62
@ PLPGSQL_DTYPE_ROW
Definition: plpgsql.h:64
@ PLPGSQL_DTYPE_PROMISE
Definition: plpgsql.h:67
@ PLPGSQL_DTYPE_RECFIELD
Definition: plpgsql.h:66
@ PLPGSQL_DTYPE_REC
Definition: plpgsql.h:65
@ PLPGSQL_DTYPE_VAR
Definition: plpgsql.h:63

◆ PLpgSQL_getdiag_kind

Enumerator
PLPGSQL_GETDIAG_ROW_COUNT 
PLPGSQL_GETDIAG_ROUTINE_OID 
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 147 of file plpgsql.h.

148 {
PLpgSQL_getdiag_kind
Definition: plpgsql.h:148
@ PLPGSQL_GETDIAG_ERROR_DETAIL
Definition: plpgsql.h:153
@ PLPGSQL_GETDIAG_SCHEMA_NAME
Definition: plpgsql.h:161
@ PLPGSQL_GETDIAG_MESSAGE_TEXT
Definition: plpgsql.h:159
@ PLPGSQL_GETDIAG_DATATYPE_NAME
Definition: plpgsql.h:158
@ PLPGSQL_GETDIAG_TABLE_NAME
Definition: plpgsql.h:160
@ PLPGSQL_GETDIAG_CONSTRAINT_NAME
Definition: plpgsql.h:157
@ PLPGSQL_GETDIAG_COLUMN_NAME
Definition: plpgsql.h:156
@ PLPGSQL_GETDIAG_ROW_COUNT
Definition: plpgsql.h:149
@ PLPGSQL_GETDIAG_RETURNED_SQLSTATE
Definition: plpgsql.h:155
@ PLPGSQL_GETDIAG_CONTEXT
Definition: plpgsql.h:151
@ PLPGSQL_GETDIAG_ERROR_HINT
Definition: plpgsql.h:154
@ PLPGSQL_GETDIAG_ERROR_CONTEXT
Definition: plpgsql.h:152
@ PLPGSQL_GETDIAG_ROUTINE_OID
Definition: plpgsql.h:150

◆ 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:52
@ PLPGSQL_LABEL_LOOP
Definition: plpgsql.h:54
@ PLPGSQL_LABEL_OTHER
Definition: plpgsql.h:55
@ PLPGSQL_LABEL_BLOCK
Definition: plpgsql.h:53

◆ 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:42
@ PLPGSQL_NSTYPE_VAR
Definition: plpgsql.h:44
@ PLPGSQL_NSTYPE_REC
Definition: plpgsql.h:45
@ PLPGSQL_NSTYPE_LABEL
Definition: plpgsql.h:43

◆ 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 73 of file plpgsql.h.

74 {
75  PLPGSQL_PROMISE_NONE = 0, /* not a promise, or promise satisfied */
PLpgSQL_promise_type
Definition: plpgsql.h:74
@ PLPGSQL_PROMISE_TG_RELID
Definition: plpgsql.h:80
@ PLPGSQL_PROMISE_NONE
Definition: plpgsql.h:75
@ PLPGSQL_PROMISE_TG_WHEN
Definition: plpgsql.h:77
@ PLPGSQL_PROMISE_TG_ARGV
Definition: plpgsql.h:84
@ PLPGSQL_PROMISE_TG_TABLE_SCHEMA
Definition: plpgsql.h:82
@ PLPGSQL_PROMISE_TG_EVENT
Definition: plpgsql.h:85
@ PLPGSQL_PROMISE_TG_TABLE_NAME
Definition: plpgsql.h:81
@ PLPGSQL_PROMISE_TG_TAG
Definition: plpgsql.h:86
@ PLPGSQL_PROMISE_TG_OP
Definition: plpgsql.h:79
@ PLPGSQL_PROMISE_TG_LEVEL
Definition: plpgsql.h:78
@ PLPGSQL_PROMISE_TG_NARGS
Definition: plpgsql.h:83
@ PLPGSQL_PROMISE_TG_NAME
Definition: plpgsql.h:76

◆ 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 167 of file plpgsql.h.

168 {
PLpgSQL_raise_option_type
Definition: plpgsql.h:168
@ PLPGSQL_RAISEOPTION_COLUMN
Definition: plpgsql.h:173
@ PLPGSQL_RAISEOPTION_TABLE
Definition: plpgsql.h:176
@ PLPGSQL_RAISEOPTION_SCHEMA
Definition: plpgsql.h:177
@ PLPGSQL_RAISEOPTION_CONSTRAINT
Definition: plpgsql.h:174
@ PLPGSQL_RAISEOPTION_DETAIL
Definition: plpgsql.h:171
@ PLPGSQL_RAISEOPTION_MESSAGE
Definition: plpgsql.h:170
@ PLPGSQL_RAISEOPTION_HINT
Definition: plpgsql.h:172
@ PLPGSQL_RAISEOPTION_ERRCODE
Definition: plpgsql.h:169
@ PLPGSQL_RAISEOPTION_DATATYPE
Definition: plpgsql.h:175

◆ PLpgSQL_resolve_option

Enumerator
PLPGSQL_RESOLVE_ERROR 
PLPGSQL_RESOLVE_VARIABLE 
PLPGSQL_RESOLVE_COLUMN 

Definition at line 183 of file plpgsql.h.

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

◆ 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 

Definition at line 102 of file plpgsql.h.

103 {
PLpgSQL_stmt_type
Definition: plpgsql.h:103
@ PLPGSQL_STMT_DYNFORS
Definition: plpgsql.h:122
@ PLPGSQL_STMT_FORI
Definition: plpgsql.h:110
@ PLPGSQL_STMT_FETCH
Definition: plpgsql.h:125
@ PLPGSQL_STMT_CASE
Definition: plpgsql.h:107
@ PLPGSQL_STMT_OPEN
Definition: plpgsql.h:124
@ PLPGSQL_STMT_ROLLBACK
Definition: plpgsql.h:130
@ PLPGSQL_STMT_COMMIT
Definition: plpgsql.h:129
@ PLPGSQL_STMT_RETURN_QUERY
Definition: plpgsql.h:117
@ PLPGSQL_STMT_RETURN
Definition: plpgsql.h:115
@ PLPGSQL_STMT_CLOSE
Definition: plpgsql.h:126
@ PLPGSQL_STMT_WHILE
Definition: plpgsql.h:109
@ PLPGSQL_STMT_BLOCK
Definition: plpgsql.h:104
@ PLPGSQL_STMT_FORS
Definition: plpgsql.h:111
@ PLPGSQL_STMT_FORC
Definition: plpgsql.h:112
@ PLPGSQL_STMT_IF
Definition: plpgsql.h:106
@ PLPGSQL_STMT_PERFORM
Definition: plpgsql.h:127
@ PLPGSQL_STMT_LOOP
Definition: plpgsql.h:108
@ PLPGSQL_STMT_ASSERT
Definition: plpgsql.h:119
@ PLPGSQL_STMT_FOREACH_A
Definition: plpgsql.h:113
@ PLPGSQL_STMT_GETDIAG
Definition: plpgsql.h:123
@ PLPGSQL_STMT_RETURN_NEXT
Definition: plpgsql.h:116
@ PLPGSQL_STMT_ASSIGN
Definition: plpgsql.h:105
@ PLPGSQL_STMT_EXIT
Definition: plpgsql.h:114
@ PLPGSQL_STMT_EXECSQL
Definition: plpgsql.h:120
@ PLPGSQL_STMT_RAISE
Definition: plpgsql.h:118
@ PLPGSQL_STMT_CALL
Definition: plpgsql.h:128
@ PLPGSQL_STMT_DYNEXECUTE
Definition: plpgsql.h:121

◆ PLpgSQL_trigtype

Enumerator
PLPGSQL_DML_TRIGGER 
PLPGSQL_EVENT_TRIGGER 
PLPGSQL_NOT_TRIGGER 

Definition at line 956 of file plpgsql.h.

957 {
PLpgSQL_trigtype
Definition: plpgsql.h:957
@ PLPGSQL_DML_TRIGGER
Definition: plpgsql.h:958
@ PLPGSQL_NOT_TRIGGER
Definition: plpgsql.h:960
@ PLPGSQL_EVENT_TRIGGER
Definition: plpgsql.h:959

◆ PLpgSQL_type_type

Enumerator
PLPGSQL_TTYPE_SCALAR 
PLPGSQL_TTYPE_REC 
PLPGSQL_TTYPE_PSEUDO 

Definition at line 92 of file plpgsql.h.

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

Function Documentation

◆ plpgsql_add_initdatums()

int plpgsql_add_initdatums ( int **  varnos)

Definition at line 2374 of file pl_comp.c.

2375 {
2376  int i;
2377  int n = 0;
2378 
2379  /*
2380  * The set of dtypes recognized here must match what exec_stmt_block()
2381  * cares about (re)initializing at block entry.
2382  */
2383  for (i = datums_last; i < plpgsql_nDatums; i++)
2384  {
2385  switch (plpgsql_Datums[i]->dtype)
2386  {
2387  case PLPGSQL_DTYPE_VAR:
2388  case PLPGSQL_DTYPE_REC:
2389  n++;
2390  break;
2391 
2392  default:
2393  break;
2394  }
2395  }
2396 
2397  if (varnos != NULL)
2398  {
2399  if (n > 0)
2400  {
2401  *varnos = (int *) palloc(sizeof(int) * n);
2402 
2403  n = 0;
2404  for (i = datums_last; i < plpgsql_nDatums; i++)
2405  {
2406  switch (plpgsql_Datums[i]->dtype)
2407  {
2408  case PLPGSQL_DTYPE_VAR:
2409  case PLPGSQL_DTYPE_REC:
2410  (*varnos)[n++] = plpgsql_Datums[i]->dno;
2411 
2412  default:
2413  break;
2414  }
2415  }
2416  }
2417  else
2418  *varnos = NULL;
2419  }
2420 
2422  return n;
2423 }
int i
Definition: isn.c:73
void * palloc(Size size)
Definition: mcxt.c:1316
PLpgSQL_datum ** plpgsql_Datums
Definition: pl_comp.c:46
static int datums_last
Definition: pl_comp.c:47
int plpgsql_nDatums
Definition: pl_comp.c:45

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

◆ plpgsql_adddatum()

void plpgsql_adddatum ( PLpgSQL_datum newdatum)

Definition at line 2313 of file pl_comp.c.

2314 {
2316  {
2317  datums_alloc *= 2;
2319  }
2320 
2321  newdatum->dno = plpgsql_nDatums;
2322  plpgsql_Datums[plpgsql_nDatums++] = newdatum;
2323 }
void * repalloc(void *pointer, Size size)
Definition: mcxt.c:1540
static int datums_alloc
Definition: pl_comp.c:44

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

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

◆ plpgsql_append_source_text()

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

Definition at line 421 of file pl_scanner.c.

423 {
424  Assert(startlocation <= endlocation);
425  appendBinaryStringInfo(buf, scanorig + startlocation,
426  endlocation - startlocation);
427 }
#define Assert(condition)
Definition: c.h:858
static char * buf
Definition: pg_test_fsync.c:73
static const char * scanorig
Definition: pl_scanner.c:110
void appendBinaryStringInfo(StringInfo str, const void *data, int datalen)
Definition: stringinfo.c:233

References appendBinaryStringInfo(), Assert, buf, and scanorig.

◆ plpgsql_base_yylex()

int plpgsql_base_yylex ( void  )

◆ plpgsql_build_datatype()

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

Definition at line 2044 of file pl_comp.c.

2046 {
2047  HeapTuple typeTup;
2048  PLpgSQL_type *typ;
2049 
2050  typeTup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typeOid));
2051  if (!HeapTupleIsValid(typeTup))
2052  elog(ERROR, "cache lookup failed for type %u", typeOid);
2053 
2054  typ = build_datatype(typeTup, typmod, collation, origtypname);
2055 
2056  ReleaseSysCache(typeTup);
2057 
2058  return typ;
2059 }
#define ERROR
Definition: elog.h:39
#define elog(elevel,...)
Definition: elog.h:224
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
static PLpgSQL_type * build_datatype(HeapTuple typeTup, int32 typmod, Oid collation, TypeName *origtypname)
Definition: pl_comp.c:2066
static Datum ObjectIdGetDatum(Oid X)
Definition: postgres.h:252
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:266
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:218

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

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

◆ plpgsql_build_datatype_arrayof()

PLpgSQL_type* plpgsql_build_datatype_arrayof ( PLpgSQL_type dtype)

Definition at line 2178 of file pl_comp.c.

2179 {
2180  Oid array_typeid;
2181 
2182  /*
2183  * If it's already an array type, use it as-is: Postgres doesn't do nested
2184  * arrays.
2185  */
2186  if (dtype->typisarray)
2187  return dtype;
2188 
2189  array_typeid = get_array_type(dtype->typoid);
2190  if (!OidIsValid(array_typeid))
2191  ereport(ERROR,
2192  (errcode(ERRCODE_UNDEFINED_OBJECT),
2193  errmsg("could not find array type for data type %s",
2194  format_type_be(dtype->typoid))));
2195 
2196  /* Note we inherit typmod and collation, if any, from the element type */
2197  return plpgsql_build_datatype(array_typeid, dtype->atttypmod,
2198  dtype->collation, NULL);
2199 }
#define OidIsValid(objectId)
Definition: c.h:775
int errcode(int sqlerrcode)
Definition: elog.c:857
int errmsg(const char *fmt,...)
Definition: elog.c:1070
#define ereport(elevel,...)
Definition: elog.h:149
char * format_type_be(Oid type_oid)
Definition: format_type.c:343
Oid get_array_type(Oid typid)
Definition: lsyscache.c:2787
PLpgSQL_type * plpgsql_build_datatype(Oid typeOid, int32 typmod, Oid collation, TypeName *origtypname)
Definition: pl_comp.c:2044
unsigned int Oid
Definition: postgres_ext.h:31
bool typisarray
Definition: plpgsql.h:207
Oid collation
Definition: plpgsql.h:206
Oid typoid
Definition: plpgsql.h:201
int32 atttypmod
Definition: plpgsql.h:208

References PLpgSQL_type::atttypmod, PLpgSQL_type::collation, ereport, errcode(), errmsg(), ERROR, format_type_be(), get_array_type(), OidIsValid, plpgsql_build_datatype(), PLpgSQL_type::typisarray, and PLpgSQL_type::typoid.

◆ plpgsql_build_recfield()

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

Definition at line 1997 of file pl_comp.c.

1998 {
1999  PLpgSQL_recfield *recfield;
2000  int i;
2001 
2002  /* search for an existing datum referencing this field */
2003  i = rec->firstfield;
2004  while (i >= 0)
2005  {
2007 
2009  fld->recparentno == rec->dno);
2010  if (strcmp(fld->fieldname, fldname) == 0)
2011  return fld;
2012  i = fld->nextfield;
2013  }
2014 
2015  /* nope, so make a new one */
2016  recfield = palloc0(sizeof(PLpgSQL_recfield));
2017  recfield->dtype = PLPGSQL_DTYPE_RECFIELD;
2018  recfield->fieldname = pstrdup(fldname);
2019  recfield->recparentno = rec->dno;
2021 
2022  plpgsql_adddatum((PLpgSQL_datum *) recfield);
2023 
2024  /* now we can link it into the parent's chain */
2025  recfield->nextfield = rec->firstfield;
2026  rec->firstfield = recfield->dno;
2027 
2028  return recfield;
2029 }
char * pstrdup(const char *in)
Definition: mcxt.c:1695
void * palloc0(Size size)
Definition: mcxt.c:1346
void plpgsql_adddatum(PLpgSQL_datum *newdatum)
Definition: pl_comp.c:2313
int firstfield
Definition: plpgsql.h:409
uint64 rectupledescid
Definition: plpgsql.h:429
PLpgSQL_datum_type dtype
Definition: plpgsql.h:422
char * fieldname
Definition: plpgsql.h:426
#define INVALID_TUPLEDESC_IDENTIFIER
Definition: typcache.h:156

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

Referenced by plpgsql_parse_dblword(), and plpgsql_parse_tripword().

◆ plpgsql_build_record()

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

Definition at line 1903 of file pl_comp.c.

1906 {
1907  PLpgSQL_rec *rec;
1908 
1909  rec = palloc0(sizeof(PLpgSQL_rec));
1910  rec->dtype = PLPGSQL_DTYPE_REC;
1911  rec->refname = pstrdup(refname);
1912  rec->lineno = lineno;
1913  /* other fields are left as 0, might be changed by caller */
1914  rec->datatype = dtype;
1915  rec->rectypeid = rectypeid;
1916  rec->firstfield = -1;
1917  rec->erh = NULL;
1919  if (add2namespace)
1921 
1922  return rec;
1923 }
void plpgsql_ns_additem(PLpgSQL_nsitem_type itemtype, int itemno, const char *name)
Definition: pl_funcs.c:92
ExpandedRecordHeader * erh
Definition: plpgsql.h:414
PLpgSQL_type * datatype
Definition: plpgsql.h:406
PLpgSQL_datum_type dtype
Definition: plpgsql.h:391
Oid rectypeid
Definition: plpgsql.h:407
int lineno
Definition: plpgsql.h:394
char * refname
Definition: plpgsql.h:393

References PLpgSQL_rec::datatype, PLpgSQL_rec::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().

◆ plpgsql_build_variable()

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

Definition at line 1840 of file pl_comp.c.

1842 {
1843  PLpgSQL_variable *result;
1844 
1845  switch (dtype->ttype)
1846  {
1847  case PLPGSQL_TTYPE_SCALAR:
1848  {
1849  /* Ordinary scalar datatype */
1850  PLpgSQL_var *var;
1851 
1852  var = palloc0(sizeof(PLpgSQL_var));
1853  var->dtype = PLPGSQL_DTYPE_VAR;
1854  var->refname = pstrdup(refname);
1855  var->lineno = lineno;
1856  var->datatype = dtype;
1857  /* other fields are left as 0, might be changed by caller */
1858 
1859  /* preset to NULL */
1860  var->value = 0;
1861  var->isnull = true;
1862  var->freeval = false;
1863 
1865  if (add2namespace)
1867  var->dno,
1868  refname);
1869  result = (PLpgSQL_variable *) var;
1870  break;
1871  }
1872  case PLPGSQL_TTYPE_REC:
1873  {
1874  /* Composite type -- build a record variable */
1875  PLpgSQL_rec *rec;
1876 
1877  rec = plpgsql_build_record(refname, lineno,
1878  dtype, dtype->typoid,
1879  add2namespace);
1880  result = (PLpgSQL_variable *) rec;
1881  break;
1882  }
1883  case PLPGSQL_TTYPE_PSEUDO:
1884  ereport(ERROR,
1885  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1886  errmsg("variable \"%s\" has pseudo-type %s",
1887  refname, format_type_be(dtype->typoid))));
1888  result = NULL; /* keep compiler quiet */
1889  break;
1890  default:
1891  elog(ERROR, "unrecognized ttype: %d", dtype->ttype);
1892  result = NULL; /* keep compiler quiet */
1893  break;
1894  }
1895 
1896  return result;
1897 }
PLpgSQL_rec * plpgsql_build_record(const char *refname, int lineno, PLpgSQL_type *dtype, Oid rectypeid, bool add2namespace)
Definition: pl_comp.c:1903
PLpgSQL_type_type ttype
Definition: plpgsql.h:202
int lineno
Definition: plpgsql.h:314
PLpgSQL_datum_type dtype
Definition: plpgsql.h:311
bool freeval
Definition: plpgsql.h:335
bool isnull
Definition: plpgsql.h:334
PLpgSQL_type * datatype
Definition: plpgsql.h:320
char * refname
Definition: plpgsql.h:313
Datum value
Definition: plpgsql.h:333

References PLpgSQL_var::datatype, PLpgSQL_var::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().

◆ plpgsql_compile()

PGDLLEXPORT PLpgSQL_function* plpgsql_compile ( FunctionCallInfo  fcinfo,
bool  forValidator 
)

Definition at line 136 of file pl_comp.c.

137 {
138  Oid funcOid = fcinfo->flinfo->fn_oid;
139  HeapTuple procTup;
140  Form_pg_proc procStruct;
141  PLpgSQL_function *function;
142  PLpgSQL_func_hashkey hashkey;
143  bool function_valid = false;
144  bool hashkey_valid = false;
145 
146  /*
147  * Lookup the pg_proc tuple by Oid; we'll need it in any case
148  */
149  procTup = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcOid));
150  if (!HeapTupleIsValid(procTup))
151  elog(ERROR, "cache lookup failed for function %u", funcOid);
152  procStruct = (Form_pg_proc) GETSTRUCT(procTup);
153 
154  /*
155  * See if there's already a cache entry for the current FmgrInfo. If not,
156  * try to find one in the hash table.
157  */
158  function = (PLpgSQL_function *) fcinfo->flinfo->fn_extra;
159 
160 recheck:
161  if (!function)
162  {
163  /* Compute hashkey using function signature and actual arg types */
164  compute_function_hashkey(fcinfo, procStruct, &hashkey, forValidator);
165  hashkey_valid = true;
166 
167  /* And do the lookup */
168  function = plpgsql_HashTableLookup(&hashkey);
169  }
170 
171  if (function)
172  {
173  /* We have a compiled function, but is it still valid? */
174  if (function->fn_xmin == HeapTupleHeaderGetRawXmin(procTup->t_data) &&
175  ItemPointerEquals(&function->fn_tid, &procTup->t_self))
176  function_valid = true;
177  else
178  {
179  /*
180  * Nope, so remove it from hashtable and try to drop associated
181  * storage (if not done already).
182  */
183  delete_function(function);
184 
185  /*
186  * If the function isn't in active use then we can overwrite the
187  * func struct with new data, allowing any other existing fn_extra
188  * pointers to make use of the new definition on their next use.
189  * If it is in use then just leave it alone and make a new one.
190  * (The active invocations will run to completion using the
191  * previous definition, and then the cache entry will just be
192  * leaked; doesn't seem worth adding code to clean it up, given
193  * what a corner case this is.)
194  *
195  * If we found the function struct via fn_extra then it's possible
196  * a replacement has already been made, so go back and recheck the
197  * hashtable.
198  */
199  if (function->use_count != 0)
200  {
201  function = NULL;
202  if (!hashkey_valid)
203  goto recheck;
204  }
205  }
206  }
207 
208  /*
209  * If the function wasn't found or was out-of-date, we have to compile it
210  */
211  if (!function_valid)
212  {
213  /*
214  * Calculate hashkey if we didn't already; we'll need it to store the
215  * completed function.
216  */
217  if (!hashkey_valid)
218  compute_function_hashkey(fcinfo, procStruct, &hashkey,
219  forValidator);
220 
221  /*
222  * Do the hard part.
223  */
224  function = do_compile(fcinfo, procTup, function,
225  &hashkey, forValidator);
226  }
227 
228  ReleaseSysCache(procTup);
229 
230  /*
231  * Save pointer in FmgrInfo to avoid search on subsequent calls
232  */
233  fcinfo->flinfo->fn_extra = (void *) function;
234 
235  /*
236  * Finally return the compiled function
237  */
238  return function;
239 }
#define HeapTupleHeaderGetRawXmin(tup)
Definition: htup_details.h:304
#define GETSTRUCT(TUP)
Definition: htup_details.h:653
if(TABLE==NULL||TABLE_index==NULL)
Definition: isn.c:77
bool ItemPointerEquals(ItemPointer pointer1, ItemPointer pointer2)
Definition: itemptr.c:35
on_exit_nicely_callback function
FormData_pg_proc * Form_pg_proc
Definition: pg_proc.h:136
static void compute_function_hashkey(FunctionCallInfo fcinfo, Form_pg_proc procStruct, PLpgSQL_func_hashkey *hashkey, bool forValidator)
Definition: pl_comp.c:2432
static PLpgSQL_function * plpgsql_HashTableLookup(PLpgSQL_func_hashkey *func_key)
Definition: pl_comp.c:2611
static PLpgSQL_function * do_compile(FunctionCallInfo fcinfo, HeapTuple procTup, PLpgSQL_function *function, PLpgSQL_func_hashkey *hashkey, bool forValidator)
Definition: pl_comp.c:264
static void delete_function(PLpgSQL_function *func)
Definition: pl_comp.c:2583
void * fn_extra
Definition: fmgr.h:64
Oid fn_oid
Definition: fmgr.h:59
FmgrInfo * flinfo
Definition: fmgr.h:87
ItemPointerData t_self
Definition: htup.h:65
HeapTupleHeader t_data
Definition: htup.h:68

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

Referenced by plpgsql_call_handler(), and plpgsql_validator().

◆ plpgsql_compile_inline()

PLpgSQL_function* plpgsql_compile_inline ( char *  proc_source)

Definition at line 843 of file pl_comp.c.

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  function->requires_procedure_resowner = false;
903 
904  plpgsql_ns_init();
906  plpgsql_DumpExecTree = false;
908 
909  /* Set up as though in a function returning VOID */
910  function->fn_rettype = VOIDOID;
911  function->fn_retset = false;
912  function->fn_retistuple = false;
913  function->fn_retisdomain = false;
914  function->fn_prokind = PROKIND_FUNCTION;
915  /* a bit of hardwired knowledge about type VOID here */
916  function->fn_retbyval = true;
917  function->fn_rettyplen = sizeof(int32);
918 
919  /*
920  * Remember if function is STABLE/IMMUTABLE. XXX would it be better to
921  * set this true inside a read-only transaction? Not clear.
922  */
923  function->fn_readonly = false;
924 
925  /*
926  * Create the magic FOUND variable.
927  */
928  var = plpgsql_build_variable("found", 0,
929  plpgsql_build_datatype(BOOLOID,
930  -1,
931  InvalidOid,
932  NULL),
933  true);
934  function->found_varno = var->dno;
935 
936  /*
937  * Now parse the function's text
938  */
939  parse_rc = plpgsql_yyparse();
940  if (parse_rc != 0)
941  elog(ERROR, "plpgsql parser returned %d", parse_rc);
942  function->action = plpgsql_parse_result;
943 
945 
946  /*
947  * If it returns VOID (always true at the moment), we allow control to
948  * fall off the end without an explicit RETURN statement.
949  */
950  if (function->fn_rettype == VOIDOID)
951  add_dummy_return(function);
952 
953  /*
954  * Complete the function's info
955  */
956  function->fn_nargs = 0;
957 
958  plpgsql_finish_datums(function);
959 
960  /*
961  * Pop the error context stack
962  */
963  error_context_stack = plerrcontext.previous;
964  plpgsql_error_funcname = NULL;
965 
966  plpgsql_check_syntax = false;
967 
970  return function;
971 }
signed int int32
Definition: c.h:494
ErrorContextCallback * error_context_stack
Definition: elog.c:94
bool check_function_bodies
Definition: guc_tables.c:514
MemoryContext CurrentMemoryContext
Definition: mcxt.c:143
#define AllocSetContextCreate
Definition: memutils.h:129
#define ALLOCSET_DEFAULT_SIZES
Definition: memutils.h:160
static void add_dummy_return(PLpgSQL_function *function)
Definition: pl_comp.c:1032
MemoryContext plpgsql_compile_tmp_cxt
Definition: pl_comp.c:56
static void plpgsql_compile_error_callback(void *arg)
Definition: pl_comp.c:980
PLpgSQL_variable * plpgsql_build_variable(const char *refname, int lineno, PLpgSQL_type *dtype, bool add2namespace)
Definition: pl_comp.c:1840
static void plpgsql_start_datums(void)
Definition: pl_comp.c:2296
char * plpgsql_error_funcname
Definition: pl_comp.c:49
PLpgSQL_stmt_block * plpgsql_parse_result
Definition: pl_comp.c:42
bool plpgsql_check_syntax
Definition: pl_comp.c:51
static void plpgsql_finish_datums(PLpgSQL_function *function)
Definition: pl_comp.c:2330
PLpgSQL_function * plpgsql_curr_compile
Definition: pl_comp.c:53
bool plpgsql_DumpExecTree
Definition: pl_comp.c:50
void plpgsql_ns_init(void)
Definition: pl_funcs.c:43
void plpgsql_ns_push(const char *label, PLpgSQL_label_type label_type)
Definition: pl_funcs.c:54
int plpgsql_variable_conflict
Definition: pl_handler.c:44
bool plpgsql_print_strict_params
Definition: pl_handler.c:46
void plpgsql_scanner_finish(void)
Definition: pl_scanner.c:630
void plpgsql_scanner_init(const char *str)
Definition: pl_scanner.c:603
int plpgsql_yyparse(void)
#define InvalidOid
Definition: postgres_ext.h:36
MemoryContextSwitchTo(old_ctx)
struct ErrorContextCallback * previous
Definition: elog.h:295
void(* callback)(void *arg)
Definition: elog.h:296

References add_dummy_return(), ALLOCSET_DEFAULT_SIZES, AllocSetContextCreate, ErrorContextCallback::arg, ErrorContextCallback::callback, check_function_bodies, CurrentMemoryContext, PLpgSQL_variable::dno, elog, ERROR, error_context_stack, function, InvalidOid, MemoryContextSwitchTo(), palloc0(), plpgsql_build_datatype(), plpgsql_build_variable(), plpgsql_check_syntax, plpgsql_compile_error_callback(), plpgsql_compile_tmp_cxt, plpgsql_curr_compile, 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().

◆ plpgsql_dumptree()

void plpgsql_dumptree ( PLpgSQL_function func)

Definition at line 1600 of file pl_funcs.c.

1601 {
1602  int i;
1603  PLpgSQL_datum *d;
1604 
1605  printf("\nExecution tree of successfully compiled PL/pgSQL function %s:\n",
1606  func->fn_signature);
1607 
1608  printf("\nFunction's data area:\n");
1609  for (i = 0; i < func->ndatums; i++)
1610  {
1611  d = func->datums[i];
1612 
1613  printf(" entry %d: ", i);
1614  switch (d->dtype)
1615  {
1616  case PLPGSQL_DTYPE_VAR:
1617  case PLPGSQL_DTYPE_PROMISE:
1618  {
1619  PLpgSQL_var *var = (PLpgSQL_var *) d;
1620 
1621  printf("VAR %-16s type %s (typoid %u) atttypmod %d\n",
1622  var->refname, var->datatype->typname,
1623  var->datatype->typoid,
1624  var->datatype->atttypmod);
1625  if (var->isconst)
1626  printf(" CONSTANT\n");
1627  if (var->notnull)
1628  printf(" NOT NULL\n");
1629  if (var->default_val != NULL)
1630  {
1631  printf(" DEFAULT ");
1632  dump_expr(var->default_val);
1633  printf("\n");
1634  }
1635  if (var->cursor_explicit_expr != NULL)
1636  {
1637  if (var->cursor_explicit_argrow >= 0)
1638  printf(" CURSOR argument row %d\n", var->cursor_explicit_argrow);
1639 
1640  printf(" CURSOR IS ");
1642  printf("\n");
1643  }
1644  if (var->promise != PLPGSQL_PROMISE_NONE)
1645  printf(" PROMISE %d\n",
1646  (int) var->promise);
1647  }
1648  break;
1649  case PLPGSQL_DTYPE_ROW:
1650  {
1651  PLpgSQL_row *row = (PLpgSQL_row *) d;
1652 
1653  printf("ROW %-16s fields", row->refname);
1654  for (int j = 0; j < row->nfields; j++)
1655  {
1656  printf(" %s=var %d", row->fieldnames[j],
1657  row->varnos[j]);
1658  }
1659  printf("\n");
1660  }
1661  break;
1662  case PLPGSQL_DTYPE_REC:
1663  printf("REC %-16s typoid %u\n",
1664  ((PLpgSQL_rec *) d)->refname,
1665  ((PLpgSQL_rec *) d)->rectypeid);
1666  if (((PLpgSQL_rec *) d)->isconst)
1667  printf(" CONSTANT\n");
1668  if (((PLpgSQL_rec *) d)->notnull)
1669  printf(" NOT NULL\n");
1670  if (((PLpgSQL_rec *) d)->default_val != NULL)
1671  {
1672  printf(" DEFAULT ");
1673  dump_expr(((PLpgSQL_rec *) d)->default_val);
1674  printf("\n");
1675  }
1676  break;
1678  printf("RECFIELD %-16s of REC %d\n",
1679  ((PLpgSQL_recfield *) d)->fieldname,
1680  ((PLpgSQL_recfield *) d)->recparentno);
1681  break;
1682  default:
1683  printf("??? unknown data type %d\n", d->dtype);
1684  }
1685  }
1686  printf("\nFunction's statements:\n");
1687 
1688  dump_indent = 0;
1689  printf("%3d:", func->action->lineno);
1690  dump_block(func->action);
1691  printf("\nEnd of execution tree of function %s\n\n", func->fn_signature);
1692  fflush(stdout);
1693 }
int j
Definition: isn.c:74
static void const char fflush(stdout)
static int dump_indent
Definition: pl_funcs.c:786
static void dump_expr(PLpgSQL_expr *expr)
Definition: pl_funcs.c:1594
static void dump_block(PLpgSQL_stmt_block *block)
Definition: pl_funcs.c:935
#define printf(...)
Definition: port.h:244
PLpgSQL_datum_type dtype
Definition: plpgsql.h:277
PLpgSQL_stmt_block * action
Definition: plpgsql.h:1007
PLpgSQL_datum ** datums
Definition: plpgsql.h:1003
char * fn_signature
Definition: plpgsql.h:968
int * varnos
Definition: plpgsql.h:383
char * refname
Definition: plpgsql.h:367
char ** fieldnames
Definition: plpgsql.h:382
int nfields
Definition: plpgsql.h:381
char * typname
Definition: plpgsql.h:200
PLpgSQL_promise_type promise
Definition: plpgsql.h:342
int cursor_explicit_argrow
Definition: plpgsql.h:328
bool notnull
Definition: plpgsql.h:316
bool isconst
Definition: plpgsql.h:315
PLpgSQL_expr * cursor_explicit_expr
Definition: plpgsql.h:327
PLpgSQL_expr * default_val
Definition: plpgsql.h:317

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_rec::dtype, dump_block(), dump_expr(), dump_indent, fflush(), PLpgSQL_row::fieldnames, PLpgSQL_function::fn_signature, i, PLpgSQL_var::isconst, j, PLpgSQL_stmt_block::lineno, PLpgSQL_function::ndatums, PLpgSQL_row::nfields, PLpgSQL_var::notnull, 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().

◆ plpgsql_exec_event_trigger()

void plpgsql_exec_event_trigger ( PLpgSQL_function func,
EventTriggerData trigdata 
)

Definition at line 1163 of file pl_exec.c.

1164 {
1165  PLpgSQL_execstate estate;
1166  ErrorContextCallback plerrcontext;
1167  int rc;
1168 
1169  /*
1170  * Setup the execution state
1171  */
1172  plpgsql_estate_setup(&estate, func, NULL, NULL, NULL);
1173  estate.evtrigdata = trigdata;
1174 
1175  /*
1176  * Setup error traceback support for ereport()
1177  */
1178  plerrcontext.callback = plpgsql_exec_error_callback;
1179  plerrcontext.arg = &estate;
1180  plerrcontext.previous = error_context_stack;
1181  error_context_stack = &plerrcontext;
1182 
1183  /*
1184  * Make local execution copies of all the datums
1185  */
1186  estate.err_text = gettext_noop("during initialization of execution state");
1187  copy_plpgsql_datums(&estate, func);
1188 
1189  /*
1190  * Let the instrumentation plugin peek at this function
1191  */
1192  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_beg)
1193  ((*plpgsql_plugin_ptr)->func_beg) (&estate, func);
1194 
1195  /*
1196  * Now call the toplevel block of statements
1197  */
1198  estate.err_text = NULL;
1199  rc = exec_toplevel_block(&estate, func->action);
1200  if (rc != PLPGSQL_RC_RETURN)
1201  {
1202  estate.err_text = NULL;
1203  ereport(ERROR,
1204  (errcode(ERRCODE_S_R_E_FUNCTION_EXECUTED_NO_RETURN_STATEMENT),
1205  errmsg("control reached end of trigger procedure without RETURN")));
1206  }
1207 
1208  estate.err_text = gettext_noop("during function exit");
1209 
1210  /*
1211  * Let the instrumentation plugin peek at this function
1212  */
1213  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_end)
1214  ((*plpgsql_plugin_ptr)->func_end) (&estate, func);
1215 
1216  /* Clean up any leftover temporary memory */
1217  plpgsql_destroy_econtext(&estate);
1218  exec_eval_cleanup(&estate);
1219  /* stmt_mcontext will be destroyed when function's main context is */
1220 
1221  /*
1222  * Pop the error context stack
1223  */
1224  error_context_stack = plerrcontext.previous;
1225 }
#define gettext_noop(x)
Definition: c.h:1196
static void exec_eval_cleanup(PLpgSQL_execstate *estate)
Definition: pl_exec.c:4137
static void plpgsql_exec_error_callback(void *arg)
Definition: pl_exec.c:1231
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:3980
static int exec_toplevel_block(PLpgSQL_execstate *estate, PLpgSQL_stmt_block *block)
Definition: pl_exec.c:1622
static void plpgsql_destroy_econtext(PLpgSQL_execstate *estate)
Definition: pl_exec.c:8462
static void copy_plpgsql_datums(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: pl_exec.c:1298
PLpgSQL_plugin ** plpgsql_plugin_ptr
Definition: pl_handler.c:56
const char * err_text
Definition: plpgsql.h:1092
EventTriggerData * evtrigdata
Definition: plpgsql.h:1026
void(* func_beg)(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: plpgsql.h:1137
void(* func_end)(PLpgSQL_execstate *estate, PLpgSQL_function *func)
Definition: plpgsql.h:1138

References PLpgSQL_function::action, ErrorContextCallback::arg, ErrorContextCallback::callback, copy_plpgsql_datums(), ereport, PLpgSQL_execstate::err_text, errcode(), errmsg(), ERROR, error_context_stack, PLpgSQL_execstate::evtrigdata, exec_eval_cleanup(), exec_toplevel_block(), 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().

◆ plpgsql_exec_function()

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

Definition at line 482 of file pl_exec.c.

487 {
488  PLpgSQL_execstate estate;
489  ErrorContextCallback plerrcontext;
490  int i;
491  int rc;
492 
493  /*
494  * Setup the execution state
495  */
496  plpgsql_estate_setup(&estate, func, (ReturnSetInfo *) fcinfo->resultinfo,
497  simple_eval_estate, simple_eval_resowner);
498  estate.procedure_resowner = procedure_resowner;
499  estate.atomic = atomic;
500 
501  /*
502  * Setup error traceback support for ereport()
503  */
504  plerrcontext.callback = plpgsql_exec_error_callback;
505  plerrcontext.arg = &estate;
506  plerrcontext.previous = error_context_stack;
507  error_context_stack = &plerrcontext;
508 
509  /*
510  * Make local execution copies of all the datums
511  */
512  estate.err_text = gettext_noop("during initialization of execution state");
513  copy_plpgsql_datums(&estate, func);
514 
515  /*
516  * Store the actual call argument values into the appropriate variables
517  */
518  estate.err_text = gettext_noop("while storing call arguments into local variables");
519  for (i = 0; i < func->fn_nargs; i++)
520  {
521  int n = func->fn_argvarnos[i];
522 
523  switch (estate.datums[n]->dtype)
524  {
525  case PLPGSQL_DTYPE_VAR:
526  {
527  PLpgSQL_var *var = (PLpgSQL_var *) estate.datums[n];
528 
529  assign_simple_var(&estate, var,
530  fcinfo->args[i].value,
531  fcinfo->args[i].isnull,
532  false);
533 
534  /*
535  * Force any array-valued parameter to be stored in
536  * expanded form in our local variable, in hopes of
537  * improving efficiency of uses of the variable. (This is
538  * a hack, really: why only arrays? Need more thought
539  * about which cases are likely to win. See also
540  * typisarray-specific heuristic in exec_assign_value.)
541  *
542  * Special cases: If passed a R/W expanded pointer, assume
543  * we can commandeer the object rather than having to copy
544  * it. If passed a R/O expanded pointer, just keep it as
545  * the value of the variable for the moment. (We'll force
546  * it to R/W if the variable gets modified, but that may
547  * very well never happen.)
548  */
549  if (!var->isnull && var->datatype->typisarray)
550  {
552  {
553  /* take ownership of R/W object */
554  assign_simple_var(&estate, var,
556  estate.datum_context),
557  false,
558  true);
559  }
561  {
562  /* R/O pointer, keep it as-is until assigned to */
563  }
564  else
565  {
566  /* flat array, so force to expanded form */
567  assign_simple_var(&estate, var,
568  expand_array(var->value,
569  estate.datum_context,
570  NULL),
571  false,
572  true);
573  }
574  }
575  }
576  break;
577 
578  case PLPGSQL_DTYPE_REC:
579  {
580  PLpgSQL_rec *rec = (PLpgSQL_rec *) estate.datums[n];
581 
582  if (!fcinfo->args[i].isnull)
583  {
584  /* Assign row value from composite datum */
585  exec_move_row_from_datum(&estate,
586  (PLpgSQL_variable *) rec,
587  fcinfo->args[i].value);
588  }
589  else
590  {
591  /* If arg is null, set variable to null */
592  exec_move_row(&estate, (PLpgSQL_variable *) rec,
593  NULL, NULL);
594  }
595  /* clean up after exec_move_row() */
596  exec_eval_cleanup(&estate);
597  }
598  break;
599 
600  default:
601  /* Anything else should not be an argument variable */
602  elog(ERROR, "unrecognized dtype: %d", func->datums[i]->dtype);
603  }
604  }
605 
606  estate.err_text = gettext_noop("during function entry");
607 
608  /*
609  * Set the magic variable FOUND to false
610  */
611  exec_set_found(&estate, false);
612 
613  /*
614  * Let the instrumentation plugin peek at this function
615  */
616  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_beg)
617  ((*plpgsql_plugin_ptr)->func_beg) (&estate, func);
618 
619  /*
620  * Now call the toplevel block of statements
621  */
622  estate.err_text = NULL;
623  rc = exec_toplevel_block(&estate, func->action);
624  if (rc != PLPGSQL_RC_RETURN)
625  {
626  estate.err_text = NULL;
627  ereport(ERROR,
628  (errcode(ERRCODE_S_R_E_FUNCTION_EXECUTED_NO_RETURN_STATEMENT),
629  errmsg("control reached end of function without RETURN")));
630  }
631 
632  /*
633  * We got a return value - process it
634  */
635  estate.err_text = gettext_noop("while casting return value to function's return type");
636 
637  fcinfo->isnull = estate.retisnull;
638 
639  if (estate.retisset)
640  {
641  ReturnSetInfo *rsi = estate.rsi;
642 
643  /* Check caller can handle a set result */
644  if (!rsi || !IsA(rsi, ReturnSetInfo))
645  ereport(ERROR,
646  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
647  errmsg("set-valued function called in context that cannot accept a set")));
648 
649  if (!(rsi->allowedModes & SFRM_Materialize))
650  ereport(ERROR,
651  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
652  errmsg("materialize mode required, but it is not allowed in this context")));
653 
655 
656  /* If we produced any tuples, send back the result */
657  if (estate.tuple_store)
658  {
659  MemoryContext oldcxt;
660 
661  rsi->setResult = estate.tuple_store;
662  oldcxt = MemoryContextSwitchTo(estate.tuple_store_cxt);
664  MemoryContextSwitchTo(oldcxt);
665  }
666  estate.retval = (Datum) 0;
667  fcinfo->isnull = true;
668  }
669  else if (!estate.retisnull)
670  {
671  /*
672  * Cast result value to function's declared result type, and copy it
673  * out to the upper executor memory context. We must treat tuple
674  * results specially in order to deal with cases like rowtypes
675  * involving dropped columns.
676  */
677  if (estate.retistuple)
678  {
679  /* Don't need coercion if rowtype is known to match */
680  if (func->fn_rettype == estate.rettype &&
681  func->fn_rettype != RECORDOID)
682  {
683  /*
684  * Copy the tuple result into upper executor memory context.
685  * However, if we have a R/W expanded datum, we can just
686  * transfer its ownership out to the upper context.
687  */
688  estate.retval = SPI_datumTransfer(estate.retval,
689  false,
690  -1);
691  }
692  else
693  {
694  /*
695  * Need to look up the expected result type. XXX would be
696  * better to cache the tupdesc instead of repeating
697  * get_call_result_type(), but the only easy place to save it
698  * is in the PLpgSQL_function struct, and that's too
699  * long-lived: composite types could change during the
700  * existence of a PLpgSQL_function.
701  */
702  Oid resultTypeId;
703  TupleDesc tupdesc;
704 
705  switch (get_call_result_type(fcinfo, &resultTypeId, &tupdesc))
706  {
707  case TYPEFUNC_COMPOSITE:
708  /* got the expected result rowtype, now coerce it */
709  coerce_function_result_tuple(&estate, tupdesc);
710  break;
712  /* got the expected result rowtype, now coerce it */
713  coerce_function_result_tuple(&estate, tupdesc);
714  /* and check domain constraints */
715  /* XXX allowing caching here would be good, too */
716  domain_check(estate.retval, false, resultTypeId,
717  NULL, NULL);
718  break;
719  case TYPEFUNC_RECORD:
720 
721  /*
722  * Failed to determine actual type of RECORD. We
723  * could raise an error here, but what this means in
724  * practice is that the caller is expecting any old
725  * generic rowtype, so we don't really need to be
726  * restrictive. Pass back the generated result as-is.
727  */
728  estate.retval = SPI_datumTransfer(estate.retval,
729  false,
730  -1);
731  break;
732  default:
733  /* shouldn't get here if retistuple is true ... */
734  elog(ERROR, "return type must be a row type");
735  break;
736  }
737  }
738  }
739  else
740  {
741  /* Scalar case: use exec_cast_value */
742  estate.retval = exec_cast_value(&estate,
743  estate.retval,
744  &fcinfo->isnull,
745  estate.rettype,
746  -1,
747  func->fn_rettype,
748  -1);
749 
750  /*
751  * If the function's return type isn't by value, copy the value
752  * into upper executor memory context. However, if we have a R/W
753  * expanded datum, we can just transfer its ownership out to the
754  * upper executor context.
755  */
756  if (!fcinfo->isnull && !func->fn_retbyval)
757  estate.retval = SPI_datumTransfer(estate.retval,
758  false,
759  func->fn_rettyplen);
760  }
761  }
762  else
763  {
764  /*
765  * We're returning a NULL, which normally requires no conversion work
766  * regardless of datatypes. But, if we are casting it to a domain
767  * return type, we'd better check that the domain's constraints pass.
768  */
769  if (func->fn_retisdomain)
770  estate.retval = exec_cast_value(&estate,
771  estate.retval,
772  &fcinfo->isnull,
773  estate.rettype,
774  -1,
775  func->fn_rettype,
776  -1);
777  }
778 
779  estate.err_text = gettext_noop("during function exit");
780 
781  /*
782  * Let the instrumentation plugin peek at this function
783  */
784  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_end)
785  ((*plpgsql_plugin_ptr)->func_end) (&estate, func);
786 
787  /* Clean up any leftover temporary memory */
788  plpgsql_destroy_econtext(&estate);
789  exec_eval_cleanup(&estate);
790  /* stmt_mcontext will be destroyed when function's main context is */
791 
792  /*
793  * Pop the error context stack
794  */
795  error_context_stack = plerrcontext.previous;
796 
797  /*
798  * Return the function's result
799  */
800  return estate.retval;
801 }
Datum expand_array(Datum arraydatum, MemoryContext parentcontext, ArrayMetaState *metacache)
void domain_check(Datum value, bool isnull, Oid domainType, void **extra, MemoryContext mcxt)
Definition: domains.c:346
@ SFRM_Materialize
Definition: execnodes.h:317
Datum TransferExpandedObject(Datum d, MemoryContext new_parent)
TypeFuncClass get_call_result_type(FunctionCallInfo fcinfo, Oid *resultTypeId, TupleDesc *resultTupleDesc)
Definition: funcapi.c:276
@ TYPEFUNC_COMPOSITE
Definition: funcapi.h:149
@ TYPEFUNC_RECORD
Definition: funcapi.h:151
@ TYPEFUNC_COMPOSITE_DOMAIN
Definition: funcapi.h:150
#define IsA(nodeptr, _type_)
Definition: nodes.h:158
static void coerce_function_result_tuple(PLpgSQL_execstate *estate, TupleDesc tupdesc)
Definition: pl_exec.c:812
static void exec_move_row_from_datum(PLpgSQL_execstate *estate, PLpgSQL_variable *target, Datum value)
Definition: pl_exec.c:7425
static Datum exec_cast_value(PLpgSQL_execstate *estate, Datum value, bool *isnull, Oid valtype, int32 valtypmod, Oid reqtype, int32 reqtypmod)
Definition: pl_exec.c:7722
static void exec_set_found(PLpgSQL_execstate *estate, bool state)
Definition: pl_exec.c:8377
static void assign_simple_var(PLpgSQL_execstate *estate, PLpgSQL_var *var, Datum newvalue, bool isnull, bool freeable)
Definition: pl_exec.c:8553
static void exec_move_row(PLpgSQL_execstate *estate, PLpgSQL_variable *target, HeapTuple tup, TupleDesc tupdesc)
Definition: pl_exec.c:6751
uintptr_t Datum
Definition: postgres.h:64
static Pointer DatumGetPointer(Datum X)
Definition: postgres.h:312
Datum SPI_datumTransfer(Datum value, bool typByVal, int typLen)
Definition: spi.c:1358
fmNodePtr resultinfo
Definition: fmgr.h:89
NullableDatum args[FLEXIBLE_ARRAY_MEMBER]
Definition: fmgr.h:95
Datum value
Definition: postgres.h:75
bool isnull
Definition: postgres.h:77
PLpgSQL_datum ** datums
Definition: plpgsql.h:1058
ResourceOwner procedure_resowner
Definition: plpgsql.h:1075
Tuplestorestate * tuple_store
Definition: plpgsql.h:1043
MemoryContext tuple_store_cxt
Definition: plpgsql.h:1045
TupleDesc tuple_store_desc
Definition: plpgsql.h:1044
MemoryContext datum_context
Definition: plpgsql.h:1060
ReturnSetInfo * rsi
Definition: plpgsql.h:1047
bool fn_retbyval
Definition: plpgsql.h:979
bool fn_retisdomain
Definition: plpgsql.h:981
int fn_argvarnos[FUNC_MAX_ARGS]
Definition: plpgsql.h:987
SetFunctionReturnMode returnMode
Definition: execnodes.h:336
TupleDesc setDesc
Definition: execnodes.h:340
Tuplestorestate * setResult
Definition: execnodes.h:339
int allowedModes
Definition: execnodes.h:334
TupleDesc CreateTupleDescCopy(TupleDesc tupdesc)
Definition: tupdesc.c:133
#define VARATT_IS_EXTERNAL_EXPANDED_RO(PTR)
Definition: varatt.h:294
#define VARATT_IS_EXTERNAL_EXPANDED_RW(PTR)
Definition: varatt.h:296

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_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_toplevel_block(), 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, if(), IsA, FunctionCallInfoBaseData::isnull, NullableDatum::isnull, PLpgSQL_var::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, PLpgSQL_execstate::procedure_resowner, 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, NullableDatum::value, PLpgSQL_var::value, VARATT_IS_EXTERNAL_EXPANDED_RO, and VARATT_IS_EXTERNAL_EXPANDED_RW.

Referenced by plpgsql_call_handler(), and plpgsql_inline_handler().

◆ plpgsql_exec_get_datum_type()

PGDLLEXPORT Oid plpgsql_exec_get_datum_type ( PLpgSQL_execstate estate,
PLpgSQL_datum datum 
)

Definition at line 5459 of file pl_exec.c.

5461 {
5462  Oid typeid;
5463 
5464  switch (datum->dtype)
5465  {
5466  case PLPGSQL_DTYPE_VAR:
5467  case PLPGSQL_DTYPE_PROMISE:
5468  {
5469  PLpgSQL_var *var = (PLpgSQL_var *) datum;
5470 
5471  typeid = var->datatype->typoid;
5472  break;
5473  }
5474 
5475  case PLPGSQL_DTYPE_REC:
5476  {
5477  PLpgSQL_rec *rec = (PLpgSQL_rec *) datum;
5478 
5479  if (rec->erh == NULL || rec->rectypeid != RECORDOID)
5480  {
5481  /* Report variable's declared type */
5482  typeid = rec->rectypeid;
5483  }
5484  else
5485  {
5486  /* Report record's actual type if declared RECORD */
5487  typeid = rec->erh->er_typeid;
5488  }
5489  break;
5490  }
5491 
5493  {
5494  PLpgSQL_recfield *recfield = (PLpgSQL_recfield *) datum;
5495  PLpgSQL_rec *rec;
5496 
5497  rec = (PLpgSQL_rec *) (estate->datums[recfield->recparentno]);
5498 
5499  /*
5500  * If record variable is NULL, instantiate it if it has a
5501  * named composite type, else complain. (This won't change
5502  * the logical state of the record: it's still NULL.)
5503  */
5504  if (rec->erh == NULL)
5505  instantiate_empty_record_variable(estate, rec);
5506 
5507  /*
5508  * Look up the field's properties if we have not already, or
5509  * if the tuple descriptor ID changed since last time.
5510  */
5511  if (unlikely(recfield->rectupledescid != rec->erh->er_tupdesc_id))
5512  {
5514  recfield->fieldname,
5515  &recfield->finfo))
5516  ereport(ERROR,
5517  (errcode(ERRCODE_UNDEFINED_COLUMN),
5518  errmsg("record \"%s\" has no field \"%s\"",
5519  rec->refname, recfield->fieldname)));
5520  recfield->rectupledescid = rec->erh->er_tupdesc_id;
5521  }
5522 
5523  typeid = recfield->finfo.ftypeid;
5524  break;
5525  }
5526 
5527  default:
5528  elog(ERROR, "unrecognized dtype: %d", datum->dtype);
5529  typeid = InvalidOid; /* keep compiler quiet */
5530  break;
5531  }
5532 
5533  return typeid;
5534 }
#define unlikely(x)
Definition: c.h:311
bool expanded_record_lookup_field(ExpandedRecordHeader *erh, const char *fieldname, ExpandedRecordFieldInfo *finfo)
static void instantiate_empty_record_variable(PLpgSQL_execstate *estate, PLpgSQL_rec *rec)
Definition: pl_exec.c:7658
ExpandedRecordFieldInfo finfo
Definition: plpgsql.h:430

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().

◆ 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 5544 of file pl_exec.c.

5547 {
5548  switch (datum->dtype)
5549  {
5550  case PLPGSQL_DTYPE_VAR:
5551  case PLPGSQL_DTYPE_PROMISE:
5552  {
5553  PLpgSQL_var *var = (PLpgSQL_var *) datum;
5554 
5555  *typeId = var->datatype->typoid;
5556  *typMod = var->datatype->atttypmod;
5557  *collation = var->datatype->collation;
5558  break;
5559  }
5560 
5561  case PLPGSQL_DTYPE_REC:
5562  {
5563  PLpgSQL_rec *rec = (PLpgSQL_rec *) datum;
5564 
5565  if (rec->erh == NULL || rec->rectypeid != RECORDOID)
5566  {
5567  /* Report variable's declared type */
5568  *typeId = rec->rectypeid;
5569  *typMod = -1;
5570  }
5571  else
5572  {
5573  /* Report record's actual type if declared RECORD */
5574  *typeId = rec->erh->er_typeid;
5575  /* do NOT return the mutable typmod of a RECORD variable */
5576  *typMod = -1;
5577  }
5578  /* composite types are never collatable */
5579  *collation = InvalidOid;
5580  break;
5581  }
5582 
5584  {
5585  PLpgSQL_recfield *recfield = (PLpgSQL_recfield *) datum;
5586  PLpgSQL_rec *rec;
5587 
5588  rec = (PLpgSQL_rec *) (estate->datums[recfield->recparentno]);
5589 
5590  /*
5591  * If record variable is NULL, instantiate it if it has a
5592  * named composite type, else complain. (This won't change
5593  * the logical state of the record: it's still NULL.)
5594  */
5595  if (rec->erh == NULL)
5596  instantiate_empty_record_variable(estate, rec);
5597 
5598  /*
5599  * Look up the field's properties if we have not already, or
5600  * if the tuple descriptor ID changed since last time.
5601  */
5602  if (unlikely(recfield->rectupledescid != rec->erh->er_tupdesc_id))
5603  {
5605  recfield->fieldname,
5606  &recfield->finfo))
5607  ereport(ERROR,
5608  (errcode(ERRCODE_UNDEFINED_COLUMN),
5609  errmsg("record \"%s\" has no field \"%s\"",
5610  rec->refname, recfield->fieldname)));
5611  recfield->rectupledescid = rec->erh->er_tupdesc_id;
5612  }
5613 
5614  *typeId = recfield->finfo.ftypeid;
5615  *typMod = recfield->finfo.ftypmod;
5616  *collation = recfield->finfo.fcollation;
5617  break;
5618  }
5619 
5620  default:
5621  elog(ERROR, "unrecognized dtype: %d", datum->dtype);
5622  *typeId = InvalidOid; /* keep compiler quiet */
5623  *typMod = -1;
5624  *collation = InvalidOid;
5625  break;
5626  }
5627 }

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().

◆ plpgsql_exec_trigger()

HeapTuple plpgsql_exec_trigger ( PLpgSQL_function func,
TriggerData trigdata 
)

Definition at line 923 of file pl_exec.c.

925 {
926  PLpgSQL_execstate estate;
927  ErrorContextCallback plerrcontext;
928  int rc;
929  TupleDesc tupdesc;
930  PLpgSQL_rec *rec_new,
931  *rec_old;
932  HeapTuple rettup;
933 
934  /*
935  * Setup the execution state
936  */
937  plpgsql_estate_setup(&estate, func, NULL, NULL, NULL);
938  estate.trigdata = trigdata;
939 
940  /*
941  * Setup error traceback support for ereport()
942  */
943  plerrcontext.callback = plpgsql_exec_error_callback;
944  plerrcontext.arg = &estate;
945  plerrcontext.previous = error_context_stack;
946  error_context_stack = &plerrcontext;
947 
948  /*
949  * Make local execution copies of all the datums
950  */
951  estate.err_text = gettext_noop("during initialization of execution state");
952  copy_plpgsql_datums(&estate, func);
953 
954  /*
955  * Put the OLD and NEW tuples into record variables
956  *
957  * We set up expanded records for both variables even though only one may
958  * have a value. This allows record references to succeed in functions
959  * that are used for multiple trigger types. For example, we might have a
960  * test like "if (TG_OP = 'INSERT' and NEW.foo = 'xyz')", which should
961  * work regardless of the current trigger type. If a value is actually
962  * fetched from an unsupplied tuple, it will read as NULL.
963  */
964  tupdesc = RelationGetDescr(trigdata->tg_relation);
965 
966  rec_new = (PLpgSQL_rec *) (estate.datums[func->new_varno]);
967  rec_old = (PLpgSQL_rec *) (estate.datums[func->old_varno]);
968 
969  rec_new->erh = make_expanded_record_from_tupdesc(tupdesc,
970  estate.datum_context);
971  rec_old->erh = make_expanded_record_from_exprecord(rec_new->erh,
972  estate.datum_context);
973 
974  if (!TRIGGER_FIRED_FOR_ROW(trigdata->tg_event))
975  {
976  /*
977  * Per-statement triggers don't use OLD/NEW variables
978  */
979  }
980  else if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
981  {
982  expanded_record_set_tuple(rec_new->erh, trigdata->tg_trigtuple,
983  false, false);
984  }
985  else if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
986  {
987  expanded_record_set_tuple(rec_new->erh, trigdata->tg_newtuple,
988  false, false);
989  expanded_record_set_tuple(rec_old->erh, trigdata->tg_trigtuple,
990  false, false);
991 
992  /*
993  * In BEFORE trigger, stored generated columns are not computed yet,
994  * so make them null in the NEW row. (Only needed in UPDATE branch;
995  * in the INSERT case, they are already null, but in UPDATE, the field
996  * still contains the old value.) Alternatively, we could construct a
997  * whole new row structure without the generated columns, but this way
998  * seems more efficient and potentially less confusing.
999  */
1000  if (tupdesc->constr && tupdesc->constr->has_generated_stored &&
1001  TRIGGER_FIRED_BEFORE(trigdata->tg_event))
1002  {
1003  for (int i = 0; i < tupdesc->natts; i++)
1004  if (TupleDescAttr(tupdesc, i)->attgenerated == ATTRIBUTE_GENERATED_STORED)
1006  i + 1,
1007  (Datum) 0,
1008  true, /* isnull */
1009  false, false);
1010  }
1011  }
1012  else if (TRIGGER_FIRED_BY_DELETE(trigdata->tg_event))
1013  {
1014  expanded_record_set_tuple(rec_old->erh, trigdata->tg_trigtuple,
1015  false, false);
1016  }
1017  else
1018  elog(ERROR, "unrecognized trigger action: not INSERT, DELETE, or UPDATE");
1019 
1020  /* Make transition tables visible to this SPI connection */
1021  rc = SPI_register_trigger_data(trigdata);
1022  Assert(rc >= 0);
1023 
1024  estate.err_text = gettext_noop("during function entry");
1025 
1026  /*
1027  * Set the magic variable FOUND to false
1028  */
1029  exec_set_found(&estate, false);
1030 
1031  /*
1032  * Let the instrumentation plugin peek at this function
1033  */
1034  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_beg)
1035  ((*plpgsql_plugin_ptr)->func_beg) (&estate, func);
1036 
1037  /*
1038  * Now call the toplevel block of statements
1039  */
1040  estate.err_text = NULL;
1041  rc = exec_toplevel_block(&estate, func->action);
1042  if (rc != PLPGSQL_RC_RETURN)
1043  {
1044  estate.err_text = NULL;
1045  ereport(ERROR,
1046  (errcode(ERRCODE_S_R_E_FUNCTION_EXECUTED_NO_RETURN_STATEMENT),
1047  errmsg("control reached end of trigger procedure without RETURN")));
1048  }
1049 
1050  estate.err_text = gettext_noop("during function exit");
1051 
1052  if (estate.retisset)
1053  ereport(ERROR,
1054  (errcode(ERRCODE_DATATYPE_MISMATCH),
1055  errmsg("trigger procedure cannot return a set")));
1056 
1057  /*
1058  * Check that the returned tuple structure has the same attributes, the
1059  * relation that fired the trigger has. A per-statement trigger always
1060  * needs to return NULL, so we ignore any return value the function itself
1061  * produces (XXX: is this a good idea?)
1062  *
1063  * XXX This way it is possible, that the trigger returns a tuple where
1064  * attributes don't have the correct atttypmod's length. It's up to the
1065  * trigger's programmer to ensure that this doesn't happen. Jan
1066  */
1067  if (estate.retisnull || !TRIGGER_FIRED_FOR_ROW(trigdata->tg_event))
1068  rettup = NULL;
1069  else
1070  {
1071  TupleDesc retdesc;
1072  TupleConversionMap *tupmap;
1073 
1074  /* We assume exec_stmt_return verified that result is composite */
1075  Assert(type_is_rowtype(estate.rettype));
1076 
1077  /* We can special-case expanded records for speed */
1079  {
1081 
1082  Assert(erh->er_magic == ER_MAGIC);
1083 
1084  /* Extract HeapTuple and TupleDesc */
1085  rettup = expanded_record_get_tuple(erh);
1086  Assert(rettup);
1087  retdesc = expanded_record_get_tupdesc(erh);
1088 
1089  if (retdesc != RelationGetDescr(trigdata->tg_relation))
1090  {
1091  /* check rowtype compatibility */
1092  tupmap = convert_tuples_by_position(retdesc,
1093  RelationGetDescr(trigdata->tg_relation),
1094  gettext_noop("returned row structure does not match the structure of the triggering table"));
1095  /* it might need conversion */
1096  if (tupmap)
1097  rettup = execute_attr_map_tuple(rettup, tupmap);
1098  /* no need to free map, we're about to return anyway */
1099  }
1100 
1101  /*
1102  * Copy tuple to upper executor memory. But if user just did
1103  * "return new" or "return old" without changing anything, there's
1104  * no need to copy; we can return the original tuple (which will
1105  * save a few cycles in trigger.c as well as here).
1106  */
1107  if (rettup != trigdata->tg_newtuple &&
1108  rettup != trigdata->tg_trigtuple)
1109  rettup = SPI_copytuple(rettup);
1110  }
1111  else
1112  {
1113  /* Convert composite datum to a HeapTuple and TupleDesc */
1114  HeapTupleData tmptup;
1115 
1116  retdesc = deconstruct_composite_datum(estate.retval, &tmptup);
1117  rettup = &tmptup;
1118 
1119  /* check rowtype compatibility */
1120  tupmap = convert_tuples_by_position(retdesc,
1121  RelationGetDescr(trigdata->tg_relation),
1122  gettext_noop("returned row structure does not match the structure of the triggering table"));
1123  /* it might need conversion */
1124  if (tupmap)
1125  rettup = execute_attr_map_tuple(rettup, tupmap);
1126 
1127  ReleaseTupleDesc(retdesc);
1128  /* no need to free map, we're about to return anyway */
1129 
1130  /* Copy tuple to upper executor memory */
1131  rettup = SPI_copytuple(rettup);
1132  }
1133  }
1134 
1135  /*
1136  * Let the instrumentation plugin peek at this function
1137  */
1138  if (*plpgsql_plugin_ptr && (*plpgsql_plugin_ptr)->func_end)
1139  ((*plpgsql_plugin_ptr)->func_end) (&estate, func);
1140 
1141  /* Clean up any leftover temporary memory */
1142  plpgsql_destroy_econtext(&estate);
1143  exec_eval_cleanup(&estate);
1144  /* stmt_mcontext will be destroyed when function's main context is */
1145 
1146  /*
1147  * Pop the error context stack
1148  */
1149  error_context_stack = plerrcontext.previous;
1150 
1151  /*
1152  * Return the trigger's result
1153  */
1154  return rettup;
1155 }
ExpandedObjectHeader * DatumGetEOHP(Datum d)
Definition: expandeddatum.c:29
ExpandedRecordHeader * make_expanded_record_from_tupdesc(TupleDesc tupdesc, MemoryContext parentcontext)
void expanded_record_set_field_internal(ExpandedRecordHeader *erh, int fnumber, Datum newValue, bool isnull, bool expand_external, bool check_constraints)
ExpandedRecordHeader * make_expanded_record_from_exprecord(ExpandedRecordHeader *olderh, MemoryContext parentcontext)
void expanded_record_set_tuple(ExpandedRecordHeader *erh, HeapTuple tuple, bool copy, bool expand_external)
HeapTuple expanded_record_get_tuple(ExpandedRecordHeader *erh)
#define ER_MAGIC
static TupleDesc expanded_record_get_tupdesc(ExpandedRecordHeader *erh)
bool type_is_rowtype(Oid typid)
Definition: lsyscache.c:2655
static TupleDesc deconstruct_composite_datum(Datum value, HeapTupleData *tmptup)
Definition: pl_exec.c:7394
#define RelationGetDescr(relation)
Definition: rel.h:531
int SPI_register_trigger_data(TriggerData *tdata)
Definition: spi.c:3356
HeapTuple SPI_copytuple(HeapTuple tuple)
Definition: spi.c:1044
TriggerData * trigdata
Definition: plpgsql.h:1025
Relation tg_relation
Definition: trigger.h:35
TriggerEvent tg_event
Definition: trigger.h:34
HeapTuple tg_newtuple
Definition: trigger.h:37
HeapTuple tg_trigtuple
Definition: trigger.h:36
bool has_generated_stored
Definition: tupdesc.h:45
TupleConstr * constr
Definition: tupdesc.h:85
#define TRIGGER_FIRED_BY_DELETE(event)
Definition: trigger.h:113
#define TRIGGER_FIRED_BEFORE(event)
Definition: trigger.h:128
#define TRIGGER_FIRED_FOR_ROW(event)
Definition: trigger.h:122
#define TRIGGER_FIRED_BY_INSERT(event)
Definition: trigger.h:110
#define TRIGGER_FIRED_BY_UPDATE(event)
Definition: trigger.h:116
TupleConversionMap * convert_tuples_by_position(TupleDesc indesc, TupleDesc outdesc, const char *msg)
Definition: tupconvert.c:59
HeapTuple execute_attr_map_tuple(HeapTuple tuple, TupleConversionMap *map)
Definition: tupconvert.c:154
#define ReleaseTupleDesc(tupdesc)
Definition: tupdesc.h:122
#define TupleDescAttr(tupdesc, i)
Definition: tupdesc.h:92
#define VARATT_IS_EXTERNAL_EXPANDED(PTR)
Definition: varatt.h:298

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_text, errcode(), errmsg(), ERROR, error_context_stack, exec_eval_cleanup(), exec_set_found(), exec_toplevel_block(), 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().

◆ plpgsql_free_function_memory()

void plpgsql_free_function_memory ( PLpgSQL_function func)

Definition at line 727 of file pl_funcs.c.

728 {
729  int i;
730 
731  /* Better not call this on an in-use function */
732  Assert(func->use_count == 0);
733 
734  /* Release plans associated with variable declarations */
735  for (i = 0; i < func->ndatums; i++)
736  {
737  PLpgSQL_datum *d = func->datums[i];
738 
739  switch (d->dtype)
740  {
741  case PLPGSQL_DTYPE_VAR:
743  {
744  PLpgSQL_var *var = (PLpgSQL_var *) d;
745 
746  free_expr(var->default_val);
748  }
749  break;
750  case PLPGSQL_DTYPE_ROW:
751  break;
752  case PLPGSQL_DTYPE_REC:
753  {
754  PLpgSQL_rec *rec = (PLpgSQL_rec *) d;
755 
756  free_expr(rec->default_val);
757  }
758  break;
760  break;
761  default:
762  elog(ERROR, "unrecognized data type: %d", d->dtype);
763  }
764  }
765  func->ndatums = 0;
766 
767  /* Release plans in statement tree */
768  if (func->action)
769  free_block(func->action);
770  func->action = NULL;
771 
772  /*
773  * And finally, release all memory except the PLpgSQL_function struct
774  * itself (which has to be kept around because there may be multiple
775  * fn_extra pointers to it).
776  */
777  if (func->fn_cxt)
779  func->fn_cxt = NULL;
780 }
void MemoryContextDelete(MemoryContext context)
Definition: mcxt.c:454
static void free_block(PLpgSQL_stmt_block *block)
Definition: pl_funcs.c:480
static void free_expr(PLpgSQL_expr *expr)
Definition: pl_funcs.c:717
unsigned long use_count
Definition: plpgsql.h:1015
MemoryContext fn_cxt
Definition: plpgsql.h:975
PLpgSQL_expr * default_val
Definition: plpgsql.h:397

References PLpgSQL_function::action, Assert, PLpgSQL_var::cursor_explicit_expr, PLpgSQL_function::datums, PLpgSQL_var::default_val, PLpgSQL_rec::default_val, PLpgSQL_datum::dtype, elog, ERROR, PLpgSQL_function::fn_cxt, free_block(), free_expr(), i, MemoryContextDelete(), PLpgSQL_function::ndatums, 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().

◆ plpgsql_getdiag_kindname()

const char* plpgsql_getdiag_kindname ( PLpgSQL_getdiag_kind  kind)

Definition at line 300 of file pl_funcs.c.

301 {
302  switch (kind)
303  {
305  return "ROW_COUNT";
307  return "PG_ROUTINE_OID";
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 }

References 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_ROUTINE_OID, PLPGSQL_GETDIAG_ROW_COUNT, PLPGSQL_GETDIAG_SCHEMA_NAME, and PLPGSQL_GETDIAG_TABLE_NAME.

Referenced by dump_getdiag().

◆ plpgsql_HashTableInit()

void plpgsql_HashTableInit ( void  )

Definition at line 2595 of file pl_comp.c.

2596 {
2597  HASHCTL ctl;
2598 
2599  /* don't allow double-initialization */
2600  Assert(plpgsql_HashTable == NULL);
2601 
2602  ctl.keysize = sizeof(PLpgSQL_func_hashkey);
2603  ctl.entrysize = sizeof(plpgsql_HashEnt);
2604  plpgsql_HashTable = hash_create("PLpgSQL function hash",
2606  &ctl,
2607  HASH_ELEM | HASH_BLOBS);
2608 }
HTAB * hash_create(const char *tabname, long nelem, const HASHCTL *info, int flags)
Definition: dynahash.c:352
#define HASH_ELEM
Definition: hsearch.h:95
#define HASH_BLOBS
Definition: hsearch.h:97
#define FUNCS_PER_USER
Definition: pl_comp.c:70
struct plpgsql_hashent plpgsql_HashEnt
static HTAB * plpgsql_HashTable
Definition: pl_comp.c:62
struct PLpgSQL_func_hashkey PLpgSQL_func_hashkey
tree ctl
Definition: radixtree.h:1851

References Assert, ctl, FUNCS_PER_USER, HASH_BLOBS, hash_create(), HASH_ELEM, and plpgsql_HashTable.

Referenced by _PG_init().

◆ plpgsql_latest_lineno()

int plpgsql_latest_lineno ( void  )

Definition at line 589 of file pl_scanner.c.

590 {
591  return cur_line_num;
592 }
static int cur_line_num
Definition: pl_scanner.c:128

References cur_line_num.

Referenced by plpgsql_compile_error_callback().

◆ plpgsql_location_to_lineno()

int plpgsql_location_to_lineno ( int  location)

Definition at line 555 of file pl_scanner.c.

556 {
557  const char *loc;
558 
559  if (location < 0 || scanorig == NULL)
560  return 0; /* garbage in, garbage out */
561  loc = scanorig + location;
562 
563  /* be correct, but not fast, if input location goes backwards */
564  if (loc < cur_line_start)
566 
567  while (cur_line_end != NULL && loc > cur_line_end)
568  {
570  cur_line_num++;
571  cur_line_end = strchr(cur_line_start, '\n');
572  }
573 
574  return cur_line_num;
575 }
static const char * cur_line_end
Definition: pl_scanner.c:127
static void location_lineno_init(void)
Definition: pl_scanner.c:579
static const char * cur_line_start
Definition: pl_scanner.c:126

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

◆ 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.

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
char name[FLEXIBLE_ARRAY_MEMBER]
Definition: plpgsql.h:447
struct PLpgSQL_nsitem * prev
Definition: plpgsql.h:446
PLpgSQL_nsitem_type itemtype
Definition: plpgsql.h:439
const char * name

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

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

◆ 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.

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 }

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

◆ plpgsql_ns_init()

void plpgsql_ns_init ( void  )

Definition at line 43 of file pl_funcs.c.

44 {
45  ns_top = NULL;
46 }

References ns_top.

Referenced by do_compile(), and plpgsql_compile_inline().

◆ plpgsql_ns_lookup()

PGDLLEXPORT 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.

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 }

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().

◆ 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.

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 }

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

◆ plpgsql_ns_pop()

void plpgsql_ns_pop ( void  )

Definition at line 67 of file pl_funcs.c.

68 {
69  Assert(ns_top != NULL);
71  ns_top = ns_top->prev;
72  ns_top = ns_top->prev;
73 }

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

◆ plpgsql_ns_push()

void plpgsql_ns_push ( const char *  label,
PLpgSQL_label_type  label_type 
)

Definition at line 54 of file pl_funcs.c.

55 {
56  if (label == NULL)
57  label = "";
58  plpgsql_ns_additem(PLPGSQL_NSTYPE_LABEL, (int) label_type, label);
59 }
static char * label

References label, plpgsql_ns_additem(), and PLPGSQL_NSTYPE_LABEL.

Referenced by do_compile(), and plpgsql_compile_inline().

◆ plpgsql_ns_top()

PLpgSQL_nsitem* plpgsql_ns_top ( void  )

◆ plpgsql_parse_cwordrowtype()

PLpgSQL_type* plpgsql_parse_cwordrowtype ( List idents)

Definition at line 1796 of file pl_comp.c.

1797 {
1798  Oid classOid;
1799  Oid typOid;
1800  RangeVar *relvar;
1801  MemoryContext oldCxt;
1802 
1803  /*
1804  * As above, this is a relation lookup but could be a type lookup if we
1805  * weren't being backwards-compatible about error wording.
1806  */
1807 
1808  /* Avoid memory leaks in long-term function context */
1810 
1811  /* Look up relation name. Can't lock it - we might not have privileges. */
1812  relvar = makeRangeVarFromNameList(idents);
1813  classOid = RangeVarGetRelid(relvar, NoLock, false);
1814 
1815  /* Some relkinds lack type OIDs */
1816  typOid = get_rel_type_id(classOid);
1817  if (!OidIsValid(typOid))
1818  ereport(ERROR,
1819  (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1820  errmsg("relation \"%s\" does not have a composite type",
1821  relvar->relname)));
1822 
1823  MemoryContextSwitchTo(oldCxt);
1824 
1825  /* Build and return the row type struct */
1826  return plpgsql_build_datatype(typOid, -1, InvalidOid,
1827  makeTypeNameFromNameList(idents));
1828 }
#define NoLock
Definition: lockdefs.h:34
Oid get_rel_type_id(Oid relid)
Definition: lsyscache.c:1979
TypeName * makeTypeNameFromNameList(List *names)
Definition: makefuncs.c:458
RangeVar * makeRangeVarFromNameList(const List *names)
Definition: namespace.c:3539
#define RangeVarGetRelid(relation, lockmode, missing_ok)
Definition: namespace.h:80
char * relname
Definition: primnodes.h:82

References ereport, errcode(), errmsg(), ERROR, get_rel_type_id(), InvalidOid, makeRangeVarFromNameList(), makeTypeNameFromNameList(), MemoryContextSwitchTo(), NoLock, OidIsValid, plpgsql_build_datatype(), plpgsql_compile_tmp_cxt, RangeVarGetRelid, and RangeVar::relname.

◆ plpgsql_parse_cwordtype()

PLpgSQL_type* plpgsql_parse_cwordtype ( List idents)

Definition at line 1647 of file pl_comp.c.

1648 {
1649  PLpgSQL_type *dtype = NULL;
1650  PLpgSQL_nsitem *nse;
1651  int nnames;
1652  RangeVar *relvar = NULL;
1653  const char *fldname = NULL;
1654  Oid classOid;
1655  HeapTuple attrtup = NULL;
1656  HeapTuple typetup = NULL;
1657  Form_pg_attribute attrStruct;
1658  MemoryContext oldCxt;
1659 
1660  /* Avoid memory leaks in the long-term function context */
1662 
1663  if (list_length(idents) == 2)
1664  {
1665  /*
1666  * Do a lookup in the current namespace stack
1667  */
1668  nse = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1669  strVal(linitial(idents)),
1670  strVal(lsecond(idents)),
1671  NULL,
1672  &nnames);
1673 
1674  if (nse != NULL && nse->itemtype == PLPGSQL_NSTYPE_VAR)
1675  {
1676  /* Block-qualified reference to scalar variable. */
1677  dtype = ((PLpgSQL_var *) (plpgsql_Datums[nse->itemno]))->datatype;
1678  goto done;
1679  }
1680  else if (nse != NULL && nse->itemtype == PLPGSQL_NSTYPE_REC &&
1681  nnames == 2)
1682  {
1683  /* Block-qualified reference to record variable. */
1684  dtype = ((PLpgSQL_rec *) (plpgsql_Datums[nse->itemno]))->datatype;
1685  goto done;
1686  }
1687 
1688  /*
1689  * First word could also be a table name
1690  */
1691  relvar = makeRangeVar(NULL,
1692  strVal(linitial(idents)),
1693  -1);
1694  fldname = strVal(lsecond(idents));
1695  }
1696  else
1697  {
1698  /*
1699  * We could check for a block-qualified reference to a field of a
1700  * record variable, but %TYPE is documented as applying to variables,
1701  * not fields of variables. Things would get rather ambiguous if we
1702  * allowed either interpretation.
1703  */
1704  List *rvnames;
1705 
1706  Assert(list_length(idents) > 2);
1707  rvnames = list_delete_last(list_copy(idents));
1708  relvar = makeRangeVarFromNameList(rvnames);
1709  fldname = strVal(llast(idents));
1710  }
1711 
1712  /* Look up relation name. Can't lock it - we might not have privileges. */
1713  classOid = RangeVarGetRelid(relvar, NoLock, false);
1714 
1715  /*
1716  * Fetch the named table field and its type
1717  */
1718  attrtup = SearchSysCacheAttName(classOid, fldname);
1719  if (!HeapTupleIsValid(attrtup))
1720  ereport(ERROR,
1721  (errcode(ERRCODE_UNDEFINED_COLUMN),
1722  errmsg("column \"%s\" of relation \"%s\" does not exist",
1723  fldname, relvar->relname)));
1724  attrStruct = (Form_pg_attribute) GETSTRUCT(attrtup);
1725 
1726  typetup = SearchSysCache1(TYPEOID,
1727  ObjectIdGetDatum(attrStruct->atttypid));
1728  if (!HeapTupleIsValid(typetup))
1729  elog(ERROR, "cache lookup failed for type %u", attrStruct->atttypid);
1730 
1731  /*
1732  * Found that - build a compiler type struct in the caller's cxt and
1733  * return it. Note that we treat the type as being found-by-OID; no
1734  * attempt to re-look-up the type name will happen during invalidations.
1735  */
1736  MemoryContextSwitchTo(oldCxt);
1737  dtype = build_datatype(typetup,
1738  attrStruct->atttypmod,
1739  attrStruct->attcollation,
1740  NULL);
1742 
1743 done:
1744  if (HeapTupleIsValid(attrtup))
1745  ReleaseSysCache(attrtup);
1746  if (HeapTupleIsValid(typetup))
1747  ReleaseSysCache(typetup);
1748 
1749  MemoryContextSwitchTo(oldCxt);
1750  return dtype;
1751 }
List * list_copy(const List *oldlist)
Definition: list.c:1573
List * list_delete_last(List *list)
Definition: list.c:957
RangeVar * makeRangeVar(char *schemaname, char *relname, int location)
Definition: makefuncs.c:424
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:209
#define llast(l)
Definition: pg_list.h:198
static int list_length(const List *l)
Definition: pg_list.h:152
#define linitial(l)
Definition: pg_list.h:178
#define lsecond(l)
Definition: pg_list.h:183
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
Definition: pg_list.h:54
HeapTuple SearchSysCacheAttName(Oid relid, const char *attname)
Definition: syscache.c:359
#define strVal(v)
Definition: value.h:82

References Assert, build_datatype(), elog, ereport, errcode(), errmsg(), ERROR, GETSTRUCT, HeapTupleIsValid, PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, linitial, list_copy(), list_delete_last(), list_length(), llast, lsecond, makeRangeVar(), makeRangeVarFromNameList(), MemoryContextSwitchTo(), NoLock, ObjectIdGetDatum(), plpgsql_compile_tmp_cxt, plpgsql_Datums, plpgsql_ns_lookup(), plpgsql_ns_top(), PLPGSQL_NSTYPE_REC, PLPGSQL_NSTYPE_VAR, RangeVarGetRelid, ReleaseSysCache(), RangeVar::relname, SearchSysCache1(), SearchSysCacheAttName(), and strVal.

◆ plpgsql_parse_dblword()

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

Definition at line 1441 of file pl_comp.c.

1443 {
1444  PLpgSQL_nsitem *ns;
1445  List *idents;
1446  int nnames;
1447 
1448  idents = list_make2(makeString(word1),
1449  makeString(word2));
1450 
1451  /*
1452  * We should do nothing in DECLARE sections. In SQL expressions, we
1453  * really only need to make sure that RECFIELD datums are created when
1454  * needed. In all the cases handled by this function, returning a T_DATUM
1455  * with a two-word idents string is the right thing.
1456  */
1458  {
1459  /*
1460  * Do a lookup in the current namespace stack
1461  */
1462  ns = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1463  word1, word2, NULL,
1464  &nnames);
1465  if (ns != NULL)
1466  {
1467  switch (ns->itemtype)
1468  {
1469  case PLPGSQL_NSTYPE_VAR:
1470  /* Block-qualified reference to scalar variable. */
1471  wdatum->datum = plpgsql_Datums[ns->itemno];
1472  wdatum->ident = NULL;
1473  wdatum->quoted = false; /* not used */
1474  wdatum->idents = idents;
1475  return true;
1476 
1477  case PLPGSQL_NSTYPE_REC:
1478  if (nnames == 1)
1479  {
1480  /*
1481  * First word is a record name, so second word could
1482  * be a field in this record. We build a RECFIELD
1483  * datum whether it is or not --- any error will be
1484  * detected later.
1485  */
1486  PLpgSQL_rec *rec;
1487  PLpgSQL_recfield *new;
1488 
1489  rec = (PLpgSQL_rec *) (plpgsql_Datums[ns->itemno]);
1490  new = plpgsql_build_recfield(rec, word2);
1491 
1492  wdatum->datum = (PLpgSQL_datum *) new;
1493  }
1494  else
1495  {
1496  /* Block-qualified reference to record variable. */
1497  wdatum->datum = plpgsql_Datums[ns->itemno];
1498  }
1499  wdatum->ident = NULL;
1500  wdatum->quoted = false; /* not used */
1501  wdatum->idents = idents;
1502  return true;
1503 
1504  default:
1505  break;
1506  }
1507  }
1508  }
1509 
1510  /* Nothing found */
1511  cword->idents = idents;
1512  return false;
1513 }
#define list_make2(x1, x2)
Definition: pg_list.h:214
PLpgSQL_recfield * plpgsql_build_recfield(PLpgSQL_rec *rec, const char *fldname)
Definition: pl_comp.c:1997
IdentifierLookup plpgsql_IdentifierLookup
Definition: pl_scanner.c:26
List * idents
Definition: plpgsql.h:1172
List * idents
Definition: plpgsql.h:1180
char * ident
Definition: plpgsql.h:1178
PLpgSQL_datum * datum
Definition: plpgsql.h:1177
bool quoted
Definition: plpgsql.h:1179
String * makeString(char *str)
Definition: value.c:63

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_Datums, plpgsql_IdentifierLookup, plpgsql_ns_lookup(), plpgsql_ns_top(), PLPGSQL_NSTYPE_REC, PLPGSQL_NSTYPE_VAR, and PLwdatum::quoted.

Referenced by plpgsql_yylex().

◆ plpgsql_parse_err_condition()

PLpgSQL_condition* plpgsql_parse_err_condition ( char *  condname)

Definition at line 2245 of file pl_comp.c.

2246 {
2247  int i;
2248  PLpgSQL_condition *new;
2249  PLpgSQL_condition *prev;
2250 
2251  /*
2252  * XXX Eventually we will want to look for user-defined exception names
2253  * here.
2254  */
2255 
2256  /*
2257  * OTHERS is represented as code 0 (which would map to '00000', but we
2258  * have no need to represent that as an exception condition).
2259  */
2260  if (strcmp(condname, "others") == 0)
2261  {
2262  new = palloc(sizeof(PLpgSQL_condition));
2263  new->sqlerrstate = 0;
2264  new->condname = condname;
2265  new->next = NULL;
2266  return new;
2267  }
2268 
2269  prev = NULL;
2270  for (i = 0; exception_label_map[i].label != NULL; i++)
2271  {
2272  if (strcmp(condname, exception_label_map[i].label) == 0)
2273  {
2274  new = palloc(sizeof(PLpgSQL_condition));
2275  new->sqlerrstate = exception_label_map[i].sqlerrstate;
2276  new->condname = condname;
2277  new->next = prev;
2278  prev = new;
2279  }
2280  }
2281 
2282  if (!prev)
2283  ereport(ERROR,
2284  (errcode(ERRCODE_UNDEFINED_OBJECT),
2285  errmsg("unrecognized exception condition \"%s\"",
2286  condname)));
2287 
2288  return prev;
2289 }
static const ExceptionLabelMap exception_label_map[]
Definition: pl_comp.c:82
const char * label
Definition: pl_comp.c:78

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

◆ plpgsql_parse_tripword()

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

Definition at line 1522 of file pl_comp.c.

1524 {
1525  PLpgSQL_nsitem *ns;
1526  List *idents;
1527  int nnames;
1528 
1529  /*
1530  * We should do nothing in DECLARE sections. In SQL expressions, we need
1531  * to make sure that RECFIELD datums are created when needed, and we need
1532  * to be careful about how many names are reported as belonging to the
1533  * T_DATUM: the third word could be a sub-field reference, which we don't
1534  * care about here.
1535  */
1537  {
1538  /*
1539  * Do a lookup in the current namespace stack. Must find a record
1540  * reference, else ignore.
1541  */
1542  ns = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1543  word1, word2, word3,
1544  &nnames);
1545  if (ns != NULL)
1546  {
1547  switch (ns->itemtype)
1548  {
1549  case PLPGSQL_NSTYPE_REC:
1550  {
1551  PLpgSQL_rec *rec;
1552  PLpgSQL_recfield *new;
1553 
1554  rec = (PLpgSQL_rec *) (plpgsql_Datums[ns->itemno]);
1555  if (nnames == 1)
1556  {
1557  /*
1558  * First word is a record name, so second word
1559  * could be a field in this record (and the third,
1560  * a sub-field). We build a RECFIELD datum
1561  * whether it is or not --- any error will be
1562  * detected later.
1563  */
1564  new = plpgsql_build_recfield(rec, word2);
1565  idents = list_make2(makeString(word1),
1566  makeString(word2));
1567  }
1568  else
1569  {
1570  /* Block-qualified reference to record variable. */
1571  new = plpgsql_build_recfield(rec, word3);
1572  idents = list_make3(makeString(word1),
1573  makeString(word2),
1574  makeString(word3));
1575  }
1576  wdatum->datum = (PLpgSQL_datum *) new;
1577  wdatum->ident = NULL;
1578  wdatum->quoted = false; /* not used */
1579  wdatum->idents = idents;
1580  return true;
1581  }
1582 
1583  default:
1584  break;
1585  }
1586  }
1587  }
1588 
1589  /* Nothing found */
1590  idents = list_make3(makeString(word1),
1591  makeString(word2),
1592  makeString(word3));
1593  cword->idents = idents;
1594  return false;
1595 }
#define list_make3(x1, x2, x3)
Definition: pg_list.h:216

References PLwdatum::datum, PLwdatum::ident, IDENTIFIER_LOOKUP_DECLARE, PLcword::idents, PLwdatum::idents, PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, list_make2, list_make3, makeString(), plpgsql_build_recfield(), plpgsql_Datums, plpgsql_IdentifierLookup, plpgsql_ns_lookup(), plpgsql_ns_top(), PLPGSQL_NSTYPE_REC, and PLwdatum::quoted.

Referenced by plpgsql_yylex().

◆ plpgsql_parse_word()

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

Definition at line 1386 of file pl_comp.c.

1388 {
1389  PLpgSQL_nsitem *ns;
1390 
1391  /*
1392  * We should not lookup variables in DECLARE sections. In SQL
1393  * expressions, there's no need to do so either --- lookup will happen
1394  * when the expression is compiled.
1395  */
1397  {
1398  /*
1399  * Do a lookup in the current namespace stack
1400  */
1401  ns = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1402  word1, NULL, NULL,
1403  NULL);
1404 
1405  if (ns != NULL)
1406  {
1407  switch (ns->itemtype)
1408  {
1409  case PLPGSQL_NSTYPE_VAR:
1410  case PLPGSQL_NSTYPE_REC:
1411  wdatum->datum = plpgsql_Datums[ns->itemno];
1412  wdatum->ident = word1;
1413  wdatum->quoted = (yytxt[0] == '"');
1414  wdatum->idents = NIL;
1415  return true;
1416 
1417  default:
1418  /* plpgsql_ns_lookup should never return anything else */
1419  elog(ERROR, "unrecognized plpgsql itemtype: %d",
1420  ns->itemtype);
1421  }
1422  }
1423  }
1424 
1425  /*
1426  * Nothing found - up to now it's a word without any special meaning for
1427  * us.
1428  */
1429  word->ident = word1;
1430  word->quoted = (yytxt[0] == '"');
1431  return false;
1432 }
#define NIL
Definition: pg_list.h:68
static void word(struct vars *v, int dir, struct state *lp, struct state *rp)
Definition: regcomp.c:1474
Definition: zic.c:304

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

Referenced by plpgsql_yylex().

◆ plpgsql_parse_wordrowtype()

PLpgSQL_type* plpgsql_parse_wordrowtype ( char *  ident)

Definition at line 1759 of file pl_comp.c.

1760 {
1761  Oid classOid;
1762  Oid typOid;
1763 
1764  /*
1765  * Look up the relation. Note that because relation rowtypes have the
1766  * same names as their relations, this could be handled as a type lookup
1767  * equally well; we use the relation lookup code path only because the
1768  * errors thrown here have traditionally referred to relations not types.
1769  * But we'll make a TypeName in case we have to do re-look-up of the type.
1770  */
1771  classOid = RelnameGetRelid(ident);
1772  if (!OidIsValid(classOid))
1773  ereport(ERROR,
1775  errmsg("relation \"%s\" does not exist", ident)));
1776 
1777  /* Some relkinds lack type OIDs */
1778  typOid = get_rel_type_id(classOid);
1779  if (!OidIsValid(typOid))
1780  ereport(ERROR,
1781  (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1782  errmsg("relation \"%s\" does not have a composite type",
1783  ident)));
1784 
1785  /* Build and return the row type struct */
1786  return plpgsql_build_datatype(typOid, -1, InvalidOid,
1787  makeTypeName(ident));
1788 }
#define ident
Definition: indent_codes.h:47
TypeName * makeTypeName(char *typnam)
Definition: makefuncs.c:446
Oid RelnameGetRelid(const char *relname)
Definition: namespace.c:870
#define ERRCODE_UNDEFINED_TABLE
Definition: pgbench.c:78

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

◆ plpgsql_parse_wordtype()

PLpgSQL_type* plpgsql_parse_wordtype ( char *  ident)

Definition at line 1606 of file pl_comp.c.

1607 {
1608  PLpgSQL_nsitem *nse;
1609 
1610  /*
1611  * Do a lookup in the current namespace stack
1612  */
1613  nse = plpgsql_ns_lookup(plpgsql_ns_top(), false,
1614  ident, NULL, NULL,
1615  NULL);
1616 
1617  if (nse != NULL)
1618  {
1619  switch (nse->itemtype)
1620  {
1621  case PLPGSQL_NSTYPE_VAR:
1622  return ((PLpgSQL_var *) (plpgsql_Datums[nse->itemno]))->datatype;
1623  case PLPGSQL_NSTYPE_REC:
1624  return ((PLpgSQL_rec *) (plpgsql_Datums[nse->itemno]))->datatype;
1625  default:
1626  break;
1627  }
1628  }
1629 
1630  /* No match, complain */
1631  ereport(ERROR,
1632  (errcode(ERRCODE_UNDEFINED_OBJECT),
1633  errmsg("variable \"%s\" does not exist", ident)));
1634  return NULL; /* keep compiler quiet */
1635 }

References ereport, errcode(), errmsg(), ERROR, ident, PLpgSQL_nsitem::itemno, PLpgSQL_nsitem::itemtype, plpgsql_Datums, plpgsql_ns_lookup(), plpgsql_ns_top(), PLPGSQL_NSTYPE_REC, and PLPGSQL_NSTYPE_VAR.

◆ plpgsql_parser_setup()

PGDLLEXPORT void plpgsql_parser_setup ( struct ParseState pstate,
PLpgSQL_expr expr 
)

Definition at line 1077 of file pl_comp.c.

1078 {
1082  /* no need to use p_coerce_param_hook */
1083  pstate->p_ref_hook_state = (void *) expr;
1084 }
static Node * plpgsql_param_ref(ParseState *pstate, ParamRef *pref)
Definition: pl_comp.c:1148
static Node * plpgsql_pre_column_ref(ParseState *pstate, ColumnRef *cref)
Definition: pl_comp.c:1090
static Node * plpgsql_post_column_ref(ParseState *pstate, ColumnRef *cref, Node *var)
Definition: pl_comp.c:1104
void * p_ref_hook_state
Definition: parse_node.h:239
ParseParamRefHook p_paramref_hook
Definition: parse_node.h:237
PreParseColumnRefHook p_pre_columnref_hook
Definition: parse_node.h:235
PostParseColumnRefHook p_post_columnref_hook
Definition: parse_node.h:236

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().

◆ plpgsql_peek()

int plpgsql_peek ( void  )

Definition at line 437 of file pl_scanner.c.

438 {
439  int tok1;
440  TokenAuxData aux1;
441 
442  tok1 = internal_yylex(&aux1);
443  push_back_token(tok1, &aux1);
444  return tok1;
445 }
static void push_back_token(int token, TokenAuxData *auxdata)
Definition: pl_scanner.c:371
static int internal_yylex(TokenAuxData *auxdata)
Definition: pl_scanner.c:325

References internal_yylex(), and push_back_token().

◆ plpgsql_peek2()

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

Definition at line 456 of file pl_scanner.c.

457 {
458  int tok1,
459  tok2;
460  TokenAuxData aux1,
461  aux2;
462 
463  tok1 = internal_yylex(&aux1);
464  tok2 = internal_yylex(&aux2);
465 
466  *tok1_p = tok1;
467  if (tok1_loc)
468  *tok1_loc = aux1.lloc;
469  *tok2_p = tok2;
470  if (tok2_loc)
471  *tok2_loc = aux2.lloc;
472 
473  push_back_token(tok2, &aux2);
474  push_back_token(tok1, &aux1);
475 }
YYLTYPE lloc
Definition: pl_scanner.c:94

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

◆ plpgsql_push_back_token()

void plpgsql_push_back_token ( int  token)

Definition at line 387 of file pl_scanner.c.

388 {
389  TokenAuxData auxdata;
390 
391  auxdata.lval = plpgsql_yylval;
392  auxdata.lloc = plpgsql_yylloc;
393  auxdata.leng = plpgsql_yyleng;
394  push_back_token(token, &auxdata);
395 }
#define token
Definition: indent_globs.h:126
static int plpgsql_yyleng
Definition: pl_scanner.c:113
YYSTYPE lval
Definition: pl_scanner.c:93

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

◆ plpgsql_recognize_err_condition()

PGDLLEXPORT int plpgsql_recognize_err_condition ( const char *  condname,
bool  allow_sqlstate 
)

Definition at line 2209 of file pl_comp.c.

2210 {
2211  int i;
2212 
2213  if (allow_sqlstate)
2214  {
2215  if (strlen(condname) == 5 &&
2216  strspn(condname, "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ") == 5)
2217  return MAKE_SQLSTATE(condname[0],
2218  condname[1],
2219  condname[2],
2220  condname[3],
2221  condname[4]);
2222  }
2223 
2224  for (i = 0; exception_label_map[i].label != NULL; i++)
2225  {
2226  if (strcmp(condname, exception_label_map[i].label) == 0)
2228  }
2229 
2230  ereport(ERROR,
2231  (errcode(ERRCODE_UNDEFINED_OBJECT),
2232  errmsg("unrecognized exception condition \"%s\"",
2233  condname)));
2234  return 0; /* keep compiler quiet */
2235 }
#define MAKE_SQLSTATE(ch1, ch2, ch3, ch4, ch5)
Definition: elog.h:56

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

Referenced by exec_stmt_raise().

◆ plpgsql_scanner_errposition()

int plpgsql_scanner_errposition ( int  location)

Definition at line 489 of file pl_scanner.c.

490 {
491  int pos;
492 
493  if (location < 0 || scanorig == NULL)
494  return 0; /* no-op if location is unknown */
495 
496  /* Convert byte offset to character number */
497  pos = pg_mbstrlen_with_len(scanorig, location) + 1;
498  /* And pass it to the ereport mechanism */
499  (void) internalerrposition(pos);
500  /* Also pass the function body string */
501  return internalerrquery(scanorig);
502 }
int internalerrquery(const char *query)
Definition: elog.c:1482
int internalerrposition(int cursorpos)
Definition: elog.c:1462
int pg_mbstrlen_with_len(const char *mbstr, int limit)
Definition: mbutils.c:1057

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

Referenced by plpgsql_yyerror().

◆ plpgsql_scanner_finish()

void plpgsql_scanner_finish ( void  )

Definition at line 630 of file pl_scanner.c.

631 {
632  /* release storage */
634  /* avoid leaving any dangling pointers */
635  yyscanner = NULL;
636  scanorig = NULL;
637 }
static core_yyscan_t yyscanner
Definition: pl_scanner.c:106
void scanner_finish(core_yyscan_t yyscanner)

References scanner_finish(), scanorig, and yyscanner.

Referenced by do_compile(), and plpgsql_compile_inline().

◆ plpgsql_scanner_init()

void plpgsql_scanner_init ( const char *  str)

Definition at line 603 of file pl_scanner.c.

604 {
605  /* Start up the core scanner */
607  &ReservedPLKeywords, ReservedPLKeywordTokens);
608 
609  /*
610  * scanorig points to the original string, which unlike the scanner's
611  * scanbuf won't be modified on-the-fly by flex. Notice that although
612  * yytext points into scanbuf, we rely on being able to apply locations
613  * (offsets from string start) to scanorig as well.
614  */
615  scanorig = str;
616 
617  /* Other setup */
619  plpgsql_yytoken = 0;
620 
621  num_pushbacks = 0;
622 
624 }
const char * str
static int num_pushbacks
Definition: pl_scanner.c:121
static int plpgsql_yytoken
Definition: pl_scanner.c:116
static const uint16 ReservedPLKeywordTokens[]
Definition: pl_scanner.c:66
static core_yy_extra_type core_yy
Definition: pl_scanner.c:107
core_yyscan_t scanner_init(const char *str, core_yy_extra_type *yyext, const ScanKeywordList *keywordlist, const uint16 *keyword_tokens)

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

Referenced by do_compile(), and plpgsql_compile_inline().

◆ plpgsql_stmt_typename()

PGDLLEXPORT const char* plpgsql_stmt_typename ( PLpgSQL_stmt stmt)

Definition at line 232 of file pl_funcs.c.

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  }
292 
293  return "unknown";
294 }
#define _(x)
Definition: elog.c:90
#define stmt
Definition: indent_codes.h:59

References _, 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_WHILE, and stmt.

Referenced by plpgsql_exec_error_callback().

◆ plpgsql_subxact_cb()

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

Definition at line 8526 of file pl_exec.c.

8528 {
8529  if (event == SUBXACT_EVENT_COMMIT_SUB || event == SUBXACT_EVENT_ABORT_SUB)
8530  {
8531  while (simple_econtext_stack != NULL &&
8532  simple_econtext_stack->xact_subxid == mySubid)
8533  {
8535 
8537  (event == SUBXACT_EVENT_COMMIT_SUB));
8541  }
8542  }
8543 }
static int32 next
Definition: blutils.c:221
void FreeExprContext(ExprContext *econtext, bool isCommit)
Definition: execUtils.c:414
void pfree(void *pointer)
Definition: mcxt.c:1520
static SimpleEcontextStackEntry * simple_econtext_stack
Definition: pl_exec.c:96
struct SimpleEcontextStackEntry * next
Definition: pl_exec.c:92
ExprContext * stack_econtext
Definition: pl_exec.c:90
SubTransactionId xact_subxid
Definition: pl_exec.c:91
@ SUBXACT_EVENT_ABORT_SUB
Definition: xact.h:144
@ SUBXACT_EVENT_COMMIT_SUB
Definition: xact.h:143

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

Referenced by _PG_init(), and plpgsql_inline_handler().

◆ plpgsql_token_is_unreserved_keyword()

bool plpgsql_token_is_unreserved_keyword ( int  token)

Definition at line 404 of file pl_scanner.c.

405 {
406  int i;
407 
408  for (i = 0; i < lengthof(UnreservedPLKeywordTokens); i++)
409  {
411  return true;
412  }
413  return false;
414 }
#define lengthof(array)
Definition: c.h:788
static const uint16 UnreservedPLKeywordTokens[]
Definition: pl_scanner.c:70

References i, lengthof, token, and UnreservedPLKeywordTokens.

◆ plpgsql_token_length()

int plpgsql_token_length ( void  )

Definition at line 313 of file pl_scanner.c.

314 {
315  return plpgsql_yyleng;
316 }

References plpgsql_yyleng.

◆ plpgsql_xact_cb()

void plpgsql_xact_cb ( XactEvent  event,
void *  arg 
)

Definition at line 8484 of file pl_exec.c.

8485 {
8486  /*
8487  * If we are doing a clean transaction shutdown, free the EState and tell
8488  * the resowner to release whatever plancache references it has, so that
8489  * all remaining resources will be released correctly. (We don't need to
8490  * actually delete the resowner here; deletion of the
8491  * TopTransactionResourceOwner will take care of that.)
8492  *
8493  * In an abort, we expect the regular abort recovery procedures to release
8494  * everything of interest, so just clear our pointers.
8495  */
8496  if (event == XACT_EVENT_COMMIT ||
8497  event == XACT_EVENT_PARALLEL_COMMIT ||
8498  event == XACT_EVENT_PREPARE)
8499  {
8500  simple_econtext_stack = NULL;
8501 
8508  }
8509  else if (event == XACT_EVENT_ABORT ||
8510  event == XACT_EVENT_PARALLEL_ABORT)
8511  {
8512  simple_econtext_stack = NULL;
8515  }
8516 }
void FreeExecutorState(EState *estate)
Definition: execUtils.c:189
static ResourceOwner shared_simple_eval_resowner
Definition: pl_exec.c:106
static EState * shared_simple_eval_estate
Definition: pl_exec.c:95
void ReleaseAllPlanCacheRefsInOwner(ResourceOwner owner)
Definition: plancache.c:2234
@ XACT_EVENT_COMMIT
Definition: xact.h:128
@ XACT_EVENT_PARALLEL_COMMIT
Definition: xact.h:129
@ XACT_EVENT_ABORT
Definition: xact.h:130
@ XACT_EVENT_PARALLEL_ABORT
Definition: xact.h:131
@ XACT_EVENT_PREPARE
Definition: xact.h:132

References FreeExecutorState(), ReleaseAllPlanCacheRefsInOwner(), shared_simple_eval_estate, shared_simple_eval_resowner, simple_econtext_stack, XACT_EVENT_ABORT, XACT_EVENT_COMMIT, XACT_EVENT_PARALLEL_ABORT, XACT_EVENT_PARALLEL_COMMIT, and XACT_EVENT_PREPARE.

Referenced by _PG_init().

◆ plpgsql_yyerror()

void plpgsql_yyerror ( const char *  message)

Definition at line 516 of file pl_scanner.c.

517 {
518  char *yytext = core_yy.scanbuf + plpgsql_yylloc;
519 
520  if (*yytext == '\0')
521  {
522  ereport(ERROR,
523  (errcode(ERRCODE_SYNTAX_ERROR),
524  /* translator: %s is typically the translation of "syntax error" */
525  errmsg("%s at end of input", _(message)),
526  plpgsql_scanner_errposition(plpgsql_yylloc)));
527  }
528  else
529  {
530  /*
531  * If we have done any lookahead then flex will have restored the
532  * character after the end-of-token. Zap it again so that we report
533  * only the single token here. This modifies scanbuf but we no longer
534  * care about that.
535  */
536  yytext[plpgsql_yyleng] = '\0';
537 
538  ereport(ERROR,
539  (errcode(ERRCODE_SYNTAX_ERROR),
540  /* translator: first %s is typically the translation of "syntax error" */
541  errmsg("%s at or near \"%s\"", _(message), yytext),
542  plpgsql_scanner_errposition(plpgsql_yylloc)));
543  }
544 }
int plpgsql_scanner_errposition(int location)
Definition: pl_scanner.c:489
char * scanbuf
Definition: scanner.h:72

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

◆ plpgsql_yylex()

int plpgsql_yylex ( void  )

Definition at line 146 of file pl_scanner.c.

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 == '.')
160  {
161  int tok3;
162  TokenAuxData aux3;
163 
164  tok3 = internal_yylex(&aux3);
165  if (tok3 == IDENT)
166  {
167  int tok4;
168  TokenAuxData aux4;
169 
170  tok4 = internal_yylex(&aux4);
171  if (tok4 == '.')
172  {
173  int tok5;
174  TokenAuxData aux5;
175 
176  tok5 = internal_yylex(&aux5);
177  if (tok5 == IDENT)
178  {
179  if (plpgsql_parse_tripword(aux1.lval.str,
180  aux3.lval.str,
181  aux5.lval.str,
182  &aux1.lval.wdatum,
183  &aux1.lval.cword))
184  tok1 = T_DATUM;
185  else
186  tok1 = T_CWORD;
187  /* Adjust token length to include A.B.C */
188  aux1.leng = aux5.lloc - aux1.lloc + aux5.leng;
189  }
190  else
191  {
192  /* not A.B.C, so just process A.B */
193  push_back_token(tok5, &aux5);
194  push_back_token(tok4, &aux4);
195  if (plpgsql_parse_dblword(aux1.lval.str,
196  aux3.lval.str,
197  &aux1.lval.wdatum,
198  &aux1.lval.cword))
199  tok1 = T_DATUM;
200  else
201  tok1 = T_CWORD;
202  /* Adjust token length to include A.B */
203  aux1.leng = aux3.lloc - aux1.lloc + aux3.leng;
204  }
205  }
206  else
207  {
208  /* not A.B.C, so just process A.B */
209  push_back_token(tok4, &aux4);
210  if (plpgsql_parse_dblword(aux1.lval.str,
211  aux3.lval.str,
212  &aux1.lval.wdatum,
213  &aux1.lval.cword))
214  tok1 = T_DATUM;
215  else
216  tok1 = T_CWORD;
217  /* Adjust token length to include A.B */
218  aux1.leng = aux3.lloc - aux1.lloc + aux3.leng;
219  }
220  }
221  else
222  {
223  /* not A.B, so just process A */
224  push_back_token(tok3, &aux3);
225  push_back_token(tok2, &aux2);
226  if (plpgsql_parse_word(aux1.lval.str,
227  core_yy.scanbuf + aux1.lloc,
228  true,
229  &aux1.lval.wdatum,
230  &aux1.lval.word))
231  tok1 = T_DATUM;
232  else if (!aux1.lval.word.quoted &&
233  (kwnum = ScanKeywordLookup(aux1.lval.word.ident,
234  &UnreservedPLKeywords)) >= 0)
235  {
236  aux1.lval.keyword = GetScanKeyword(kwnum,
237  &UnreservedPLKeywords);
238  tok1 = UnreservedPLKeywordTokens[kwnum];
239  }
240  else
241  tok1 = T_WORD;
242  }
243  }
244  else
245  {
246  /* not A.B, so just process A */
247  push_back_token(tok2, &aux2);
248 
249  /*
250  * See if it matches a variable name, except in the context where
251  * we are at start of statement and the next token isn't
252  * assignment or '['. In that case, it couldn't validly be a
253  * variable name, and skipping the lookup allows variable names to
254  * be used that would conflict with plpgsql or core keywords that
255  * introduce statements (e.g., "comment"). Without this special
256  * logic, every statement-introducing keyword would effectively be
257  * reserved in PL/pgSQL, which would be unpleasant.
258  *
259  * If it isn't a variable name, try to match against unreserved
260  * plpgsql keywords. If not one of those either, it's T_WORD.
261  *
262  * Note: we must call plpgsql_parse_word even if we don't want to
263  * do variable lookup, because it sets up aux1.lval.word for the
264  * non-variable cases.
265  */
266  if (plpgsql_parse_word(aux1.lval.str,
267  core_yy.scanbuf + aux1.lloc,
269  (tok2 == '=' || tok2 == COLON_EQUALS ||
270  tok2 == '[')),
271  &aux1.lval.wdatum,
272  &aux1.lval.word))
273  tok1 = T_DATUM;
274  else if (!aux1.lval.word.quoted &&
275  (kwnum = ScanKeywordLookup(aux1.lval.word.ident,
276  &UnreservedPLKeywords)) >= 0)
277  {
278  aux1.lval.keyword = GetScanKeyword(kwnum,
279  &UnreservedPLKeywords);
280  tok1 = UnreservedPLKeywordTokens[kwnum];
281  }
282  else
283  tok1 = T_WORD;
284  }
285  }
286  else
287  {
288  /*
289  * Not a potential plpgsql variable name, just return the data.
290  *
291  * Note that we also come through here if the grammar pushed back a
292  * T_DATUM, T_CWORD, T_WORD, or unreserved-keyword token returned by a
293  * previous lookup cycle; thus, pushbacks do not incur extra lookup
294  * work, since we'll never do the above code twice for the same token.
295  * This property also makes it safe to rely on the old value of
296  * plpgsql_yytoken in the is-this-start-of-statement test above.
297  */
298  }
299 
300  plpgsql_yylval = aux1.lval;
301  plpgsql_yylloc = aux1.lloc;
302  plpgsql_yyleng = aux1.leng;
303  plpgsql_yytoken = tok1;
304  return tok1;
305 }
int ScanKeywordLookup(const char *str, const ScanKeywordList *keywords)
Definition: kwlookup.c:38
static const char * GetScanKeyword(int n, const ScanKeywordList *keywords)
Definition: kwlookup.h:39
bool plpgsql_parse_dblword(char *word1, char *word2, PLwdatum *wdatum, PLcword *cword)
Definition: pl_comp.c:1441
bool plpgsql_parse_word(char *word1, const char *yytxt, bool lookup, PLwdatum *wdatum, PLword *word)
Definition: pl_comp.c:1386
bool plpgsql_parse_tripword(char *word1, char *word2, char *word3, PLwdatum *wdatum, PLcword *cword)
Definition: pl_comp.c:1522
#define AT_STMT_START(prev_token)
Definition: pl_scanner.c:82

References AT_STMT_START, core_yy, 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.

◆ plpgsql_yyparse()

int plpgsql_yyparse ( void  )

Variable Documentation

◆ plpgsql_check_asserts

bool plpgsql_check_asserts
extern

Definition at line 48 of file pl_handler.c.

Referenced by _PG_init(), and exec_stmt_assert().

◆ plpgsql_check_syntax

bool plpgsql_check_syntax
extern

Definition at line 51 of file pl_comp.c.

Referenced by do_compile(), and plpgsql_compile_inline().

◆ plpgsql_compile_tmp_cxt

MemoryContext plpgsql_compile_tmp_cxt
extern

◆ plpgsql_curr_compile

PLpgSQL_function* plpgsql_curr_compile
extern

Definition at line 53 of file pl_comp.c.

Referenced by do_compile(), and plpgsql_compile_inline().

◆ plpgsql_Datums

◆ plpgsql_DumpExecTree

bool plpgsql_DumpExecTree
extern

Definition at line 50 of file pl_comp.c.

Referenced by do_compile(), and plpgsql_compile_inline().

◆ plpgsql_error_funcname

char* plpgsql_error_funcname
extern

Definition at line 49 of file pl_comp.c.

Referenced by do_compile(), plpgsql_compile_error_callback(), and plpgsql_compile_inline().

◆ plpgsql_extra_errors

int plpgsql_extra_errors
extern

◆ plpgsql_extra_warnings

int plpgsql_extra_warnings
extern

◆ plpgsql_IdentifierLookup

IdentifierLookup plpgsql_IdentifierLookup
extern

◆ plpgsql_nDatums

int plpgsql_nDatums
extern

◆ plpgsql_parse_result

PLpgSQL_stmt_block* plpgsql_parse_result
extern

Definition at line 42 of file pl_comp.c.

Referenced by do_compile(), and plpgsql_compile_inline().

◆ plpgsql_plugin_ptr

◆ plpgsql_print_strict_params

bool plpgsql_print_strict_params
extern

Definition at line 46 of file pl_handler.c.

Referenced by _PG_init(), do_compile(), and plpgsql_compile_inline().

◆ plpgsql_variable_conflict

int plpgsql_variable_conflict
extern

Definition at line 44 of file pl_handler.c.

Referenced by _PG_init(), do_compile(), and plpgsql_compile_inline().