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parse_node.h File Reference
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Data Structures

struct  ParseState
 
struct  ParseNamespaceItem
 
struct  ParseNamespaceColumn
 
struct  ParseCallbackState
 

Typedefs

typedef struct ParseState ParseState
 
typedef struct ParseNamespaceItem ParseNamespaceItem
 
typedef struct ParseNamespaceColumn ParseNamespaceColumn
 
typedef enum ParseExprKind ParseExprKind
 
typedef Node *(* PreParseColumnRefHook) (ParseState *pstate, ColumnRef *cref)
 
typedef Node *(* PostParseColumnRefHook) (ParseState *pstate, ColumnRef *cref, Node *var)
 
typedef Node *(* ParseParamRefHook) (ParseState *pstate, ParamRef *pref)
 
typedef Node *(* CoerceParamHook) (ParseState *pstate, Param *param, Oid targetTypeId, int32 targetTypeMod, int location)
 
typedef struct ParseCallbackState ParseCallbackState
 

Enumerations

enum  ParseExprKind {
  EXPR_KIND_NONE = 0 , EXPR_KIND_OTHER , EXPR_KIND_JOIN_ON , EXPR_KIND_JOIN_USING ,
  EXPR_KIND_FROM_SUBSELECT , EXPR_KIND_FROM_FUNCTION , EXPR_KIND_WHERE , EXPR_KIND_HAVING ,
  EXPR_KIND_FILTER , EXPR_KIND_WINDOW_PARTITION , EXPR_KIND_WINDOW_ORDER , EXPR_KIND_WINDOW_FRAME_RANGE ,
  EXPR_KIND_WINDOW_FRAME_ROWS , EXPR_KIND_WINDOW_FRAME_GROUPS , EXPR_KIND_SELECT_TARGET , EXPR_KIND_INSERT_TARGET ,
  EXPR_KIND_UPDATE_SOURCE , EXPR_KIND_UPDATE_TARGET , EXPR_KIND_MERGE_WHEN , EXPR_KIND_GROUP_BY ,
  EXPR_KIND_ORDER_BY , EXPR_KIND_DISTINCT_ON , EXPR_KIND_LIMIT , EXPR_KIND_OFFSET ,
  EXPR_KIND_RETURNING , EXPR_KIND_MERGE_RETURNING , EXPR_KIND_VALUES , EXPR_KIND_VALUES_SINGLE ,
  EXPR_KIND_CHECK_CONSTRAINT , EXPR_KIND_DOMAIN_CHECK , EXPR_KIND_COLUMN_DEFAULT , EXPR_KIND_FUNCTION_DEFAULT ,
  EXPR_KIND_INDEX_EXPRESSION , EXPR_KIND_INDEX_PREDICATE , EXPR_KIND_STATS_EXPRESSION , EXPR_KIND_ALTER_COL_TRANSFORM ,
  EXPR_KIND_EXECUTE_PARAMETER , EXPR_KIND_TRIGGER_WHEN , EXPR_KIND_POLICY , EXPR_KIND_PARTITION_BOUND ,
  EXPR_KIND_PARTITION_EXPRESSION , EXPR_KIND_CALL_ARGUMENT , EXPR_KIND_COPY_WHERE , EXPR_KIND_GENERATED_COLUMN ,
  EXPR_KIND_CYCLE_MARK
}
 

Functions

ParseStatemake_parsestate (ParseState *parentParseState)
 
void free_parsestate (ParseState *pstate)
 
int parser_errposition (ParseState *pstate, int location)
 
void setup_parser_errposition_callback (ParseCallbackState *pcbstate, ParseState *pstate, int location)
 
void cancel_parser_errposition_callback (ParseCallbackState *pcbstate)
 
void transformContainerType (Oid *containerType, int32 *containerTypmod)
 
SubscriptingReftransformContainerSubscripts (ParseState *pstate, Node *containerBase, Oid containerType, int32 containerTypMod, List *indirection, bool isAssignment)
 
Constmake_const (ParseState *pstate, A_Const *aconst)
 

Typedef Documentation

◆ CoerceParamHook

typedef Node *(* CoerceParamHook) (ParseState *pstate, Param *param, Oid targetTypeId, int32 targetTypeMod, int location)

Definition at line 94 of file parse_node.h.

◆ ParseCallbackState

◆ ParseExprKind

◆ ParseNamespaceColumn

Definition at line 25 of file parse_node.h.

◆ ParseNamespaceItem

Definition at line 24 of file parse_node.h.

◆ ParseParamRefHook

typedef Node *(* ParseParamRefHook) (ParseState *pstate, ParamRef *pref)

Definition at line 93 of file parse_node.h.

◆ ParseState

typedef struct ParseState ParseState

Definition at line 23 of file parse_node.h.

◆ PostParseColumnRefHook

typedef Node *(* PostParseColumnRefHook) (ParseState *pstate, ColumnRef *cref, Node *var)

Definition at line 92 of file parse_node.h.

◆ PreParseColumnRefHook

typedef Node *(* PreParseColumnRefHook) (ParseState *pstate, ColumnRef *cref)

Definition at line 91 of file parse_node.h.

Enumeration Type Documentation

◆ ParseExprKind

Enumerator
EXPR_KIND_NONE 
EXPR_KIND_OTHER 
EXPR_KIND_JOIN_ON 
EXPR_KIND_JOIN_USING 
EXPR_KIND_FROM_SUBSELECT 
EXPR_KIND_FROM_FUNCTION 
EXPR_KIND_WHERE 
EXPR_KIND_HAVING 
EXPR_KIND_FILTER 
EXPR_KIND_WINDOW_PARTITION 
EXPR_KIND_WINDOW_ORDER 
EXPR_KIND_WINDOW_FRAME_RANGE 
EXPR_KIND_WINDOW_FRAME_ROWS 
EXPR_KIND_WINDOW_FRAME_GROUPS 
EXPR_KIND_SELECT_TARGET 
EXPR_KIND_INSERT_TARGET 
EXPR_KIND_UPDATE_SOURCE 
EXPR_KIND_UPDATE_TARGET 
EXPR_KIND_MERGE_WHEN 
EXPR_KIND_GROUP_BY 
EXPR_KIND_ORDER_BY 
EXPR_KIND_DISTINCT_ON 
EXPR_KIND_LIMIT 
EXPR_KIND_OFFSET 
EXPR_KIND_RETURNING 
EXPR_KIND_MERGE_RETURNING 
EXPR_KIND_VALUES 
EXPR_KIND_VALUES_SINGLE 
EXPR_KIND_CHECK_CONSTRAINT 
EXPR_KIND_DOMAIN_CHECK 
EXPR_KIND_COLUMN_DEFAULT 
EXPR_KIND_FUNCTION_DEFAULT 
EXPR_KIND_INDEX_EXPRESSION 
EXPR_KIND_INDEX_PREDICATE 
EXPR_KIND_STATS_EXPRESSION 
EXPR_KIND_ALTER_COL_TRANSFORM 
EXPR_KIND_EXECUTE_PARAMETER 
EXPR_KIND_TRIGGER_WHEN 
EXPR_KIND_POLICY 
EXPR_KIND_PARTITION_BOUND 
EXPR_KIND_PARTITION_EXPRESSION 
EXPR_KIND_CALL_ARGUMENT 
EXPR_KIND_COPY_WHERE 
EXPR_KIND_GENERATED_COLUMN 
EXPR_KIND_CYCLE_MARK 

Definition at line 38 of file parse_node.h.

39{
40 EXPR_KIND_NONE = 0, /* "not in an expression" */
41 EXPR_KIND_OTHER, /* reserved for extensions */
42 EXPR_KIND_JOIN_ON, /* JOIN ON */
43 EXPR_KIND_JOIN_USING, /* JOIN USING */
44 EXPR_KIND_FROM_SUBSELECT, /* sub-SELECT in FROM clause */
45 EXPR_KIND_FROM_FUNCTION, /* function in FROM clause */
46 EXPR_KIND_WHERE, /* WHERE */
47 EXPR_KIND_HAVING, /* HAVING */
48 EXPR_KIND_FILTER, /* FILTER */
49 EXPR_KIND_WINDOW_PARTITION, /* window definition PARTITION BY */
50 EXPR_KIND_WINDOW_ORDER, /* window definition ORDER BY */
51 EXPR_KIND_WINDOW_FRAME_RANGE, /* window frame clause with RANGE */
52 EXPR_KIND_WINDOW_FRAME_ROWS, /* window frame clause with ROWS */
53 EXPR_KIND_WINDOW_FRAME_GROUPS, /* window frame clause with GROUPS */
54 EXPR_KIND_SELECT_TARGET, /* SELECT target list item */
55 EXPR_KIND_INSERT_TARGET, /* INSERT target list item */
56 EXPR_KIND_UPDATE_SOURCE, /* UPDATE assignment source item */
57 EXPR_KIND_UPDATE_TARGET, /* UPDATE assignment target item */
58 EXPR_KIND_MERGE_WHEN, /* MERGE WHEN [NOT] MATCHED condition */
59 EXPR_KIND_GROUP_BY, /* GROUP BY */
60 EXPR_KIND_ORDER_BY, /* ORDER BY */
61 EXPR_KIND_DISTINCT_ON, /* DISTINCT ON */
62 EXPR_KIND_LIMIT, /* LIMIT */
63 EXPR_KIND_OFFSET, /* OFFSET */
64 EXPR_KIND_RETURNING, /* RETURNING in INSERT/UPDATE/DELETE */
65 EXPR_KIND_MERGE_RETURNING, /* RETURNING in MERGE */
66 EXPR_KIND_VALUES, /* VALUES */
67 EXPR_KIND_VALUES_SINGLE, /* single-row VALUES (in INSERT only) */
68 EXPR_KIND_CHECK_CONSTRAINT, /* CHECK constraint for a table */
69 EXPR_KIND_DOMAIN_CHECK, /* CHECK constraint for a domain */
70 EXPR_KIND_COLUMN_DEFAULT, /* default value for a table column */
71 EXPR_KIND_FUNCTION_DEFAULT, /* default parameter value for function */
72 EXPR_KIND_INDEX_EXPRESSION, /* index expression */
73 EXPR_KIND_INDEX_PREDICATE, /* index predicate */
74 EXPR_KIND_STATS_EXPRESSION, /* extended statistics expression */
75 EXPR_KIND_ALTER_COL_TRANSFORM, /* transform expr in ALTER COLUMN TYPE */
76 EXPR_KIND_EXECUTE_PARAMETER, /* parameter value in EXECUTE */
77 EXPR_KIND_TRIGGER_WHEN, /* WHEN condition in CREATE TRIGGER */
78 EXPR_KIND_POLICY, /* USING or WITH CHECK expr in policy */
79 EXPR_KIND_PARTITION_BOUND, /* partition bound expression */
80 EXPR_KIND_PARTITION_EXPRESSION, /* PARTITION BY expression */
81 EXPR_KIND_CALL_ARGUMENT, /* procedure argument in CALL */
82 EXPR_KIND_COPY_WHERE, /* WHERE condition in COPY FROM */
83 EXPR_KIND_GENERATED_COLUMN, /* generation expression for a column */
84 EXPR_KIND_CYCLE_MARK, /* cycle mark value */
ParseExprKind
Definition: parse_node.h:39
@ EXPR_KIND_EXECUTE_PARAMETER
Definition: parse_node.h:76
@ EXPR_KIND_DOMAIN_CHECK
Definition: parse_node.h:69
@ EXPR_KIND_COPY_WHERE
Definition: parse_node.h:82
@ EXPR_KIND_COLUMN_DEFAULT
Definition: parse_node.h:70
@ EXPR_KIND_DISTINCT_ON
Definition: parse_node.h:61
@ EXPR_KIND_MERGE_WHEN
Definition: parse_node.h:58
@ EXPR_KIND_STATS_EXPRESSION
Definition: parse_node.h:74
@ EXPR_KIND_INDEX_EXPRESSION
Definition: parse_node.h:72
@ EXPR_KIND_MERGE_RETURNING
Definition: parse_node.h:65
@ EXPR_KIND_PARTITION_BOUND
Definition: parse_node.h:79
@ EXPR_KIND_FUNCTION_DEFAULT
Definition: parse_node.h:71
@ EXPR_KIND_WINDOW_FRAME_RANGE
Definition: parse_node.h:51
@ EXPR_KIND_VALUES
Definition: parse_node.h:66
@ EXPR_KIND_FROM_SUBSELECT
Definition: parse_node.h:44
@ EXPR_KIND_POLICY
Definition: parse_node.h:78
@ EXPR_KIND_WINDOW_FRAME_GROUPS
Definition: parse_node.h:53
@ EXPR_KIND_PARTITION_EXPRESSION
Definition: parse_node.h:80
@ EXPR_KIND_JOIN_USING
Definition: parse_node.h:43
@ EXPR_KIND_INDEX_PREDICATE
Definition: parse_node.h:73
@ EXPR_KIND_ORDER_BY
Definition: parse_node.h:60
@ EXPR_KIND_OFFSET
Definition: parse_node.h:63
@ EXPR_KIND_JOIN_ON
Definition: parse_node.h:42
@ EXPR_KIND_HAVING
Definition: parse_node.h:47
@ EXPR_KIND_INSERT_TARGET
Definition: parse_node.h:55
@ EXPR_KIND_ALTER_COL_TRANSFORM
Definition: parse_node.h:75
@ EXPR_KIND_LIMIT
Definition: parse_node.h:62
@ EXPR_KIND_WHERE
Definition: parse_node.h:46
@ EXPR_KIND_UPDATE_TARGET
Definition: parse_node.h:57
@ EXPR_KIND_SELECT_TARGET
Definition: parse_node.h:54
@ EXPR_KIND_RETURNING
Definition: parse_node.h:64
@ EXPR_KIND_GENERATED_COLUMN
Definition: parse_node.h:83
@ EXPR_KIND_NONE
Definition: parse_node.h:40
@ EXPR_KIND_CALL_ARGUMENT
Definition: parse_node.h:81
@ EXPR_KIND_GROUP_BY
Definition: parse_node.h:59
@ EXPR_KIND_OTHER
Definition: parse_node.h:41
@ EXPR_KIND_FROM_FUNCTION
Definition: parse_node.h:45
@ EXPR_KIND_TRIGGER_WHEN
Definition: parse_node.h:77
@ EXPR_KIND_FILTER
Definition: parse_node.h:48
@ EXPR_KIND_UPDATE_SOURCE
Definition: parse_node.h:56
@ EXPR_KIND_CHECK_CONSTRAINT
Definition: parse_node.h:68
@ EXPR_KIND_WINDOW_PARTITION
Definition: parse_node.h:49
@ EXPR_KIND_CYCLE_MARK
Definition: parse_node.h:84
@ EXPR_KIND_WINDOW_FRAME_ROWS
Definition: parse_node.h:52
@ EXPR_KIND_WINDOW_ORDER
Definition: parse_node.h:50
@ EXPR_KIND_VALUES_SINGLE
Definition: parse_node.h:67

Function Documentation

◆ cancel_parser_errposition_callback()

void cancel_parser_errposition_callback ( ParseCallbackState pcbstate)

◆ free_parsestate()

void free_parsestate ( ParseState pstate)

Definition at line 72 of file parse_node.c.

73{
74 /*
75 * Check that we did not produce too many resnos; at the very least we
76 * cannot allow more than 2^16, since that would exceed the range of a
77 * AttrNumber. It seems safest to use MaxTupleAttributeNumber.
78 */
79 if (pstate->p_next_resno - 1 > MaxTupleAttributeNumber)
81 (errcode(ERRCODE_TOO_MANY_COLUMNS),
82 errmsg("target lists can have at most %d entries",
84
85 if (pstate->p_target_relation != NULL)
87
88 pfree(pstate);
89}
int errcode(int sqlerrcode)
Definition: elog.c:853
int errmsg(const char *fmt,...)
Definition: elog.c:1070
#define ERROR
Definition: elog.h:39
#define ereport(elevel,...)
Definition: elog.h:149
#define MaxTupleAttributeNumber
Definition: htup_details.h:34
#define NoLock
Definition: lockdefs.h:34
void pfree(void *pointer)
Definition: mcxt.c:1524
int p_next_resno
Definition: parse_node.h:231
Relation p_target_relation
Definition: parse_node.h:225
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:126

References ereport, errcode(), errmsg(), ERROR, MaxTupleAttributeNumber, NoLock, ParseState::p_next_resno, ParseState::p_target_relation, pfree(), and table_close().

Referenced by AlterPolicy(), CreatePolicy(), CreateTriggerFiringOn(), inline_function(), interpret_AS_clause(), parse_analyze_fixedparams(), parse_analyze_varparams(), parse_analyze_withcb(), parse_sub_analyze(), standard_ProcessUtility(), transformIndexStmt(), transformInsertStmt(), transformJsonArrayQueryConstructor(), TransformPubWhereClauses(), transformRuleStmt(), and transformStatsStmt().

◆ make_const()

Const * make_const ( ParseState pstate,
A_Const aconst 
)

Definition at line 347 of file parse_node.c.

348{
349 Const *con;
350 Datum val;
351 Oid typeid;
352 int typelen;
353 bool typebyval;
354 ParseCallbackState pcbstate;
355
356 if (aconst->isnull)
357 {
358 /* return a null const */
359 con = makeConst(UNKNOWNOID,
360 -1,
362 -2,
363 (Datum) 0,
364 true,
365 false);
366 con->location = aconst->location;
367 return con;
368 }
369
370 switch (nodeTag(&aconst->val))
371 {
372 case T_Integer:
373 val = Int32GetDatum(intVal(&aconst->val));
374
375 typeid = INT4OID;
376 typelen = sizeof(int32);
377 typebyval = true;
378 break;
379
380 case T_Float:
381 {
382 /* could be an oversize integer as well as a float ... */
383
384 ErrorSaveContext escontext = {T_ErrorSaveContext};
385 int64 val64;
386
387 val64 = pg_strtoint64_safe(aconst->val.fval.fval, (Node *) &escontext);
388 if (!escontext.error_occurred)
389 {
390 /*
391 * It might actually fit in int32. Probably only INT_MIN
392 * can occur, but we'll code the test generally just to be
393 * sure.
394 */
395 int32 val32 = (int32) val64;
396
397 if (val64 == (int64) val32)
398 {
399 val = Int32GetDatum(val32);
400
401 typeid = INT4OID;
402 typelen = sizeof(int32);
403 typebyval = true;
404 }
405 else
406 {
407 val = Int64GetDatum(val64);
408
409 typeid = INT8OID;
410 typelen = sizeof(int64);
411 typebyval = FLOAT8PASSBYVAL; /* int8 and float8 alike */
412 }
413 }
414 else
415 {
416 /* arrange to report location if numeric_in() fails */
417 setup_parser_errposition_callback(&pcbstate, pstate, aconst->location);
419 CStringGetDatum(aconst->val.fval.fval),
421 Int32GetDatum(-1));
423
424 typeid = NUMERICOID;
425 typelen = -1; /* variable len */
426 typebyval = false;
427 }
428 break;
429 }
430
431 case T_Boolean:
432 val = BoolGetDatum(boolVal(&aconst->val));
433
434 typeid = BOOLOID;
435 typelen = 1;
436 typebyval = true;
437 break;
438
439 case T_String:
440
441 /*
442 * We assume here that UNKNOWN's internal representation is the
443 * same as CSTRING
444 */
445 val = CStringGetDatum(strVal(&aconst->val));
446
447 typeid = UNKNOWNOID; /* will be coerced later */
448 typelen = -2; /* cstring-style varwidth type */
449 typebyval = false;
450 break;
451
452 case T_BitString:
453 /* arrange to report location if bit_in() fails */
454 setup_parser_errposition_callback(&pcbstate, pstate, aconst->location);
458 Int32GetDatum(-1));
460 typeid = BITOID;
461 typelen = -1;
462 typebyval = false;
463 break;
464
465 default:
466 elog(ERROR, "unrecognized node type: %d", (int) nodeTag(&aconst->val));
467 return NULL; /* keep compiler quiet */
468 }
469
470 con = makeConst(typeid,
471 -1, /* typmod -1 is OK for all cases */
472 InvalidOid, /* all cases are uncollatable types */
473 typelen,
474 val,
475 false,
476 typebyval);
477 con->location = aconst->location;
478
479 return con;
480}
Datum numeric_in(PG_FUNCTION_ARGS)
Definition: numeric.c:637
int64_t int64
Definition: c.h:499
#define FLOAT8PASSBYVAL
Definition: c.h:606
int32_t int32
Definition: c.h:498
#define elog(elevel,...)
Definition: elog.h:225
Datum Int64GetDatum(int64 X)
Definition: fmgr.c:1807
#define DirectFunctionCall3(func, arg1, arg2, arg3)
Definition: fmgr.h:645
long val
Definition: informix.c:689
Const * makeConst(Oid consttype, int32 consttypmod, Oid constcollid, int constlen, Datum constvalue, bool constisnull, bool constbyval)
Definition: makefuncs.c:350
#define nodeTag(nodeptr)
Definition: nodes.h:133
int64 pg_strtoint64_safe(const char *s, Node *escontext)
Definition: numutils.c:650
void cancel_parser_errposition_callback(ParseCallbackState *pcbstate)
Definition: parse_node.c:156
void setup_parser_errposition_callback(ParseCallbackState *pcbstate, ParseState *pstate, int location)
Definition: parse_node.c:140
uintptr_t Datum
Definition: postgres.h:69
static Datum BoolGetDatum(bool X)
Definition: postgres.h:107
static Datum ObjectIdGetDatum(Oid X)
Definition: postgres.h:257
static Datum CStringGetDatum(const char *X)
Definition: postgres.h:355
static Datum Int32GetDatum(int32 X)
Definition: postgres.h:217
#define InvalidOid
Definition: postgres_ext.h:37
unsigned int Oid
Definition: postgres_ext.h:32
bool isnull
Definition: parsenodes.h:374
union ValUnion val
Definition: parsenodes.h:373
ParseLoc location
Definition: parsenodes.h:375
char * bsval
Definition: value.h:76
bool error_occurred
Definition: miscnodes.h:47
char * fval
Definition: value.h:52
Definition: nodes.h:129
BitString bsval
Definition: parsenodes.h:365
Float fval
Definition: parsenodes.h:362
#define boolVal(v)
Definition: value.h:81
#define intVal(v)
Definition: value.h:79
#define strVal(v)
Definition: value.h:82
Datum bit_in(PG_FUNCTION_ARGS)
Definition: varbit.c:147

References bit_in(), BoolGetDatum(), boolVal, ValUnion::bsval, BitString::bsval, cancel_parser_errposition_callback(), CStringGetDatum(), DirectFunctionCall3, elog, ERROR, ErrorSaveContext::error_occurred, FLOAT8PASSBYVAL, ValUnion::fval, Float::fval, Int32GetDatum(), Int64GetDatum(), intVal, InvalidOid, A_Const::isnull, A_Const::location, makeConst(), nodeTag, numeric_in(), ObjectIdGetDatum(), pg_strtoint64_safe(), setup_parser_errposition_callback(), strVal, A_Const::val, and val.

Referenced by transformExprRecurse().

◆ make_parsestate()

ParseState * make_parsestate ( ParseState parentParseState)

Definition at line 39 of file parse_node.c.

40{
41 ParseState *pstate;
42
43 pstate = palloc0(sizeof(ParseState));
44
45 pstate->parentParseState = parentParseState;
46
47 /* Fill in fields that don't start at null/false/zero */
48 pstate->p_next_resno = 1;
49 pstate->p_resolve_unknowns = true;
50
51 if (parentParseState)
52 {
53 pstate->p_sourcetext = parentParseState->p_sourcetext;
54 /* all hooks are copied from parent */
55 pstate->p_pre_columnref_hook = parentParseState->p_pre_columnref_hook;
56 pstate->p_post_columnref_hook = parentParseState->p_post_columnref_hook;
57 pstate->p_paramref_hook = parentParseState->p_paramref_hook;
58 pstate->p_coerce_param_hook = parentParseState->p_coerce_param_hook;
59 pstate->p_ref_hook_state = parentParseState->p_ref_hook_state;
60 /* query environment stays in context for the whole parse analysis */
61 pstate->p_queryEnv = parentParseState->p_queryEnv;
62 }
63
64 return pstate;
65}
void * palloc0(Size size)
Definition: mcxt.c:1347
ParseState * parentParseState
Definition: parse_node.h:208
void * p_ref_hook_state
Definition: parse_node.h:258
ParseParamRefHook p_paramref_hook
Definition: parse_node.h:256
PreParseColumnRefHook p_pre_columnref_hook
Definition: parse_node.h:254
QueryEnvironment * p_queryEnv
Definition: parse_node.h:239
const char * p_sourcetext
Definition: parse_node.h:209
bool p_resolve_unknowns
Definition: parse_node.h:236
CoerceParamHook p_coerce_param_hook
Definition: parse_node.h:257
PostParseColumnRefHook p_post_columnref_hook
Definition: parse_node.h:255

References ParseState::p_coerce_param_hook, ParseState::p_next_resno, ParseState::p_paramref_hook, ParseState::p_post_columnref_hook, ParseState::p_pre_columnref_hook, ParseState::p_queryEnv, ParseState::p_ref_hook_state, ParseState::p_resolve_unknowns, ParseState::p_sourcetext, palloc0(), and ParseState::parentParseState.

Referenced by AddRelationNewConstraints(), AlterDomainDefault(), AlterPolicy(), ATExecAttachPartition(), ATPrepAlterColumnType(), convert_ANY_sublink_to_join(), copy_table(), CreatePolicy(), CreateTriggerFiringOn(), DefineRelation(), domainAddCheckConstraint(), ExplainExecuteQuery(), inline_function(), interpret_AS_clause(), parse_analyze_fixedparams(), parse_analyze_varparams(), parse_analyze_withcb(), parse_sub_analyze(), rewriteTargetView(), standard_ProcessUtility(), test_rls_hooks_permissive(), test_rls_hooks_restrictive(), transformAlterTableStmt(), transformCreateStmt(), transformIndexStmt(), transformInsertStmt(), transformJsonArrayQueryConstructor(), transformPartitionSpec(), TransformPubWhereClauses(), transformRuleStmt(), and transformStatsStmt().

◆ parser_errposition()

int parser_errposition ( ParseState pstate,
int  location 
)

Definition at line 106 of file parse_node.c.

107{
108 int pos;
109
110 /* No-op if location was not provided */
111 if (location < 0)
112 return 0;
113 /* Can't do anything if source text is not available */
114 if (pstate == NULL || pstate->p_sourcetext == NULL)
115 return 0;
116 /* Convert offset to character number */
117 pos = pg_mbstrlen_with_len(pstate->p_sourcetext, location) + 1;
118 /* And pass it to the ereport mechanism */
119 return errposition(pos);
120}
int errposition(int cursorpos)
Definition: elog.c:1446
int pg_mbstrlen_with_len(const char *mbstr, int limit)
Definition: mbutils.c:1057

References errposition(), ParseState::p_sourcetext, and pg_mbstrlen_with_len().

Referenced by addRangeTableEntryForCTE(), addRangeTableEntryForFunction(), addRangeTableEntryForTableFunc(), AlterDatabase(), analyzeCTE(), analyzeCTETargetList(), array_subscript_transform(), assign_collations_walker(), assign_hypothetical_collations(), ATPrepAlterColumnType(), check_agg_arguments(), check_agg_arguments_walker(), check_agglevels_and_constraints(), check_lateral_ref_ok(), check_nested_generated_walker(), check_new_partition_bound(), check_parameter_resolution_walker(), check_simple_rowfilter_expr_walker(), check_srf_call_placement(), CheckDuplicateColumnOrPathNames(), checkExprIsVarFree(), checkInsertTargets(), checkJsonOutputFormat(), checkTargetlistEntrySQL92(), checkWellFormedRecursion(), checkWellFormedRecursionWalker(), cluster(), coerce_to_boolean(), coerce_to_common_type(), coerce_to_specific_type_typmod(), colNameToVar(), compatible_oper(), compute_common_attribute(), compute_function_attributes(), ComputePartitionAttrs(), createdb(), CreateTriggerFiringOn(), defGetCopyLogVerbosityChoice(), defGetCopyOnErrorChoice(), DefineCollation(), DefineDomain(), DefineType(), DropDatabase(), errorConflictingDefElem(), errorMissingColumn(), errorMissingRTE(), EvaluateParams(), ExecReindex(), ExecVacuum(), ExpandAllTables(), ExpandColumnRefStar(), ExplainQuery(), finalize_grouping_exprs_walker(), findTargetlistEntrySQL92(), fixed_paramref_hook(), generateSerialExtraStmts(), GetColumnDefCollation(), GrantRole(), hstore_subscript_transform(), init_params(), interpret_function_parameter_list(), jsonb_subscript_transform(), LookupOperName(), LookupTypeNameExtended(), LookupTypeNameOid(), make_distinct_op(), make_op(), make_row_comparison_op(), make_row_distinct_op(), make_scalar_array_op(), merge_collation_state(), op_error(), parseCheckAggregates(), ParseFuncOrColumn(), parser_coercion_errposition(), pcb_error_callback(), plpgsql_post_column_ref(), ProcessCopyOptions(), resolve_column_ref(), resolve_unique_index_expr(), scanNameSpaceForRefname(), scanNameSpaceForRelid(), scanNSItemForColumn(), scanRTEForColumn(), select_common_collation(), select_common_type(), substitute_grouped_columns_mutator(), TopologicalSort(), transformAExprNullIf(), transformAggregateCall(), transformArrayExpr(), transformAssignedExpr(), transformAssignmentIndirection(), transformAssignmentSubscripts(), transformCaseExpr(), transformCoalesceExpr(), transformCollateClause(), transformColumnDefinition(), transformColumnRef(), transformColumnType(), transformConstraintAttrs(), transformContainerSubscripts(), transformDistinctClause(), transformDistinctOnClause(), transformExprRecurse(), transformFrameOffset(), transformFromClauseItem(), transformGroupingFunc(), transformGroupingSet(), transformIndexConstraint(), transformIndirection(), transformInsertRow(), transformJsonAggConstructor(), transformJsonArrayQueryConstructor(), transformJsonBehavior(), transformJsonFuncExpr(), transformJsonParseArg(), transformJsonParseExpr(), transformJsonReturning(), transformJsonTable(), transformJsonTableColumns(), transformJsonValueExpr(), transformLockingClause(), transformMergeSupportFunc(), transformMultiAssignRef(), transformOnConflictArbiter(), transformParamRef(), transformPartitionBound(), transformPartitionBoundValue(), transformPLAssignStmt(), transformRangeFunction(), transformRangeTableFunc(), transformRangeTableSample(), transformReturningClause(), transformRowExpr(), transformSelectStmt(), transformSetOperationStmt(), transformSetOperationTree(), transformSubLink(), transformTableConstraint(), transformUpdateTargetList(), transformValuesClause(), transformWindowDefinitions(), transformWindowFuncCall(), transformWithClause(), transformXmlExpr(), transformXmlSerialize(), typenameType(), typenameTypeMod(), unknown_attribute(), validateInfiniteBounds(), variable_coerce_param_hook(), and variable_paramref_hook().

◆ setup_parser_errposition_callback()

void setup_parser_errposition_callback ( ParseCallbackState pcbstate,
ParseState pstate,
int  location 
)

◆ transformContainerSubscripts()

SubscriptingRef * transformContainerSubscripts ( ParseState pstate,
Node containerBase,
Oid  containerType,
int32  containerTypMod,
List indirection,
bool  isAssignment 
)

Definition at line 243 of file parse_node.c.

249{
250 SubscriptingRef *sbsref;
251 const SubscriptRoutines *sbsroutines;
252 Oid elementType;
253 bool isSlice = false;
254 ListCell *idx;
255
256 /*
257 * Determine the actual container type, smashing any domain. In the
258 * assignment case the caller already did this, since it also needs to
259 * know the actual container type.
260 */
261 if (!isAssignment)
262 transformContainerType(&containerType, &containerTypMod);
263
264 /*
265 * Verify that the container type is subscriptable, and get its support
266 * functions and typelem.
267 */
268 sbsroutines = getSubscriptingRoutines(containerType, &elementType);
269 if (!sbsroutines)
271 (errcode(ERRCODE_DATATYPE_MISMATCH),
272 errmsg("cannot subscript type %s because it does not support subscripting",
273 format_type_be(containerType)),
274 parser_errposition(pstate, exprLocation(containerBase))));
275
276 /*
277 * Detect whether any of the indirection items are slice specifiers.
278 *
279 * A list containing only simple subscripts refers to a single container
280 * element. If any of the items are slice specifiers (lower:upper), then
281 * the subscript expression means a container slice operation.
282 */
283 foreach(idx, indirection)
284 {
286
287 if (ai->is_slice)
288 {
289 isSlice = true;
290 break;
291 }
292 }
293
294 /*
295 * Ready to build the SubscriptingRef node.
296 */
297 sbsref = makeNode(SubscriptingRef);
298
299 sbsref->refcontainertype = containerType;
300 sbsref->refelemtype = elementType;
301 /* refrestype is to be set by container-specific logic */
302 sbsref->reftypmod = containerTypMod;
303 /* refcollid will be set by parse_collate.c */
304 /* refupperindexpr, reflowerindexpr are to be set by container logic */
305 sbsref->refexpr = (Expr *) containerBase;
306 sbsref->refassgnexpr = NULL; /* caller will fill if it's an assignment */
307
308 /*
309 * Call the container-type-specific logic to transform the subscripts and
310 * determine the subscripting result type.
311 */
312 sbsroutines->transform(sbsref, indirection, pstate,
313 isSlice, isAssignment);
314
315 /*
316 * Verify we got a valid type (this defends, for example, against someone
317 * using array_subscript_handler as typsubscript without setting typelem).
318 */
319 if (!OidIsValid(sbsref->refrestype))
321 (errcode(ERRCODE_DATATYPE_MISMATCH),
322 errmsg("cannot subscript type %s because it does not support subscripting",
323 format_type_be(containerType))));
324
325 return sbsref;
326}
Datum idx(PG_FUNCTION_ARGS)
Definition: _int_op.c:259
#define OidIsValid(objectId)
Definition: c.h:746
char * format_type_be(Oid type_oid)
Definition: format_type.c:343
const struct SubscriptRoutines * getSubscriptingRoutines(Oid typid, Oid *typelemp)
Definition: lsyscache.c:3169
int exprLocation(const Node *expr)
Definition: nodeFuncs.c:1388
#define makeNode(_type_)
Definition: nodes.h:155
int parser_errposition(ParseState *pstate, int location)
Definition: parse_node.c:106
void transformContainerType(Oid *containerType, int32 *containerTypmod)
Definition: parse_node.c:189
#define lfirst_node(type, lc)
Definition: pg_list.h:176
bool is_slice
Definition: parsenodes.h:470
SubscriptTransform transform
Definition: subscripting.h:160
Expr * refassgnexpr
Definition: primnodes.h:720
Expr * refexpr
Definition: primnodes.h:718

References ereport, errcode(), errmsg(), ERROR, exprLocation(), format_type_be(), getSubscriptingRoutines(), idx(), A_Indices::is_slice, lfirst_node, makeNode, OidIsValid, parser_errposition(), SubscriptingRef::refassgnexpr, SubscriptingRef::refexpr, SubscriptRoutines::transform, and transformContainerType().

Referenced by transformAssignmentSubscripts(), and transformIndirection().

◆ transformContainerType()

void transformContainerType ( Oid containerType,
int32 containerTypmod 
)

Definition at line 189 of file parse_node.c.

190{
191 /*
192 * If the input is a domain, smash to base type, and extract the actual
193 * typmod to be applied to the base type. Subscripting a domain is an
194 * operation that necessarily works on the base container type, not the
195 * domain itself. (Note that we provide no method whereby the creator of a
196 * domain over a container type could hide its ability to be subscripted.)
197 */
198 *containerType = getBaseTypeAndTypmod(*containerType, containerTypmod);
199
200 /*
201 * We treat int2vector and oidvector as though they were domains over
202 * int2[] and oid[]. This is needed because array slicing could create an
203 * array that doesn't satisfy the dimensionality constraints of the
204 * xxxvector type; so we want the result of a slice operation to be
205 * considered to be of the more general type.
206 */
207 if (*containerType == INT2VECTOROID)
208 *containerType = INT2ARRAYOID;
209 else if (*containerType == OIDVECTOROID)
210 *containerType = OIDARRAYOID;
211}
Oid getBaseTypeAndTypmod(Oid typid, int32 *typmod)
Definition: lsyscache.c:2577

References getBaseTypeAndTypmod().

Referenced by transformAssignmentSubscripts(), and transformContainerSubscripts().