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dict.c File Reference

#include "postgres.h"
#include "catalog/pg_type.h"
#include "tsearch/ts_cache.h"
#include "tsearch/ts_public.h"
#include "utils/array.h"
#include "utils/builtins.h"

Include dependency graph for dict.c:

Go to the source code of this file.

Functions

Datum ts_lexize (PG_FUNCTION_ARGS)

Function Documentation

◆ ts_lexize()

Datum ts_lexize ( PG_FUNCTION_ARGS )

Definition at line 27 of file dict.c.

28{

29 Oid dictId = PG_GETARG_OID(0);

30 text *in = PG_GETARG_TEXT_PP(1);

31 ArrayType *a;

32 TSDictionaryCacheEntry *dict;

33 TSLexeme *res,

34 *ptr;

35 Datum *da;

36 DictSubState dstate = {false, false, NULL};

37

38 dict = lookup_ts_dictionary_cache(dictId);

39

40 res = (TSLexeme *) DatumGetPointer(FunctionCall4(&dict->lexize,

41 PointerGetDatum(dict->dictData),

42 PointerGetDatum(VARDATA_ANY(in)),

43 Int32GetDatum(VARSIZE_ANY_EXHDR(in)),

44 PointerGetDatum(&dstate)));

45

46 if (dstate.getnext)

47 {

48 dstate.isend = true;

49 ptr = (TSLexeme *) DatumGetPointer(FunctionCall4(&dict->lexize,

50 PointerGetDatum(dict->dictData),

51 PointerGetDatum(VARDATA_ANY(in)),

52 Int32GetDatum(VARSIZE_ANY_EXHDR(in)),

53 PointerGetDatum(&dstate)));

54 if (ptr != NULL)

55 res = ptr;

56 }

57

58 if (!res)

59 PG_RETURN_NULL();

60

61 ptr = res;

62 while (ptr->lexeme)

63 ptr++;

64 da = (Datum *) palloc(sizeof(Datum) * (ptr - res));

65 ptr = res;

66 while (ptr->lexeme)

67 {

68 da[ptr - res] = CStringGetTextDatum(ptr->lexeme);

69 ptr++;

70 }

71

72 a = construct_array_builtin(da, ptr - res, TEXTOID);

73

74 ptr = res;

75 while (ptr->lexeme)

76 {

77 pfree(DatumGetPointer(da[ptr - res]));

78 pfree(ptr->lexeme);

79 ptr++;

80 }

81 pfree(res);

82 pfree(da);

83

84 PG_RETURN_POINTER(a);

85}

construct_array_builtin

ArrayType * construct_array_builtin(Datum *elems, int nelems, Oid elmtype)

Definition: arrayfuncs.c:3382

CStringGetTextDatum

#define CStringGetTextDatum(s)

Definition: builtins.h:97

PG_GETARG_OID

#define PG_GETARG_OID(n)

Definition: fmgr.h:275

PG_GETARG_TEXT_PP

#define PG_GETARG_TEXT_PP(n)

Definition: fmgr.h:309

PG_RETURN_NULL

#define PG_RETURN_NULL()

Definition: fmgr.h:345

FunctionCall4

#define FunctionCall4(flinfo, arg1, arg2, arg3, arg4)

Definition: fmgr.h:706

PG_RETURN_POINTER

#define PG_RETURN_POINTER(x)

Definition: fmgr.h:361

a

int a

Definition: isn.c:73

pfree

void pfree(void *pointer)

Definition: mcxt.c:1594

palloc

void * palloc(Size size)

Definition: mcxt.c:1365

PointerGetDatum

static Datum PointerGetDatum(const void *X)

Definition: postgres.h:332

Datum

uint64_t Datum

Definition: postgres.h:70

DatumGetPointer

static Pointer DatumGetPointer(Datum X)

Definition: postgres.h:322

Int32GetDatum

static Datum Int32GetDatum(int32 X)

Definition: postgres.h:222

Oid

unsigned int Oid

Definition: postgres_ext.h:32

ArrayType

Definition: array.h:93

DictSubState

Definition: ts_public.h:151

DictSubState::isend

bool isend

Definition: ts_public.h:152

DictSubState::getnext

bool getnext

Definition: ts_public.h:154

TSDictionaryCacheEntry

Definition: ts_cache.h:52

TSDictionaryCacheEntry::dictData

void * dictData

Definition: ts_cache.h:62

TSDictionaryCacheEntry::lexize

FmgrInfo lexize

Definition: ts_cache.h:59

TSLexeme

Definition: ts_public.h:116

TSLexeme::lexeme

char * lexeme

Definition: ts_public.h:138

varlena

Definition: c.h:692

lookup_ts_dictionary_cache

TSDictionaryCacheEntry * lookup_ts_dictionary_cache(Oid dictId)

Definition: ts_cache.c:208

VARSIZE_ANY_EXHDR

static Size VARSIZE_ANY_EXHDR(const void *PTR)

Definition: varatt.h:472

VARDATA_ANY

static char * VARDATA_ANY(const void *PTR)

Definition: varatt.h:486

References a, construct_array_builtin(), CStringGetTextDatum, DatumGetPointer(), TSDictionaryCacheEntry::dictData, FunctionCall4, DictSubState::getnext, Int32GetDatum(), DictSubState::isend, TSLexeme::lexeme, TSDictionaryCacheEntry::lexize, lookup_ts_dictionary_cache(), palloc(), pfree(), PG_GETARG_OID, PG_GETARG_TEXT_PP, PG_RETURN_NULL, PG_RETURN_POINTER, PointerGetDatum(), VARDATA_ANY(), and VARSIZE_ANY_EXHDR().