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author | thegeorg <thegeorg@yandex-team.com> | 2023-10-03 11:19:48 +0300 |
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committer | thegeorg <thegeorg@yandex-team.com> | 2023-10-03 11:43:28 +0300 |
commit | cda0c13f23f6b169fb0a49dc504b40a0aaecea09 (patch) | |
tree | 26476e92e5af2c856e017afb1df8f8dff42495bf /contrib/tools/swig/Lib/perl5/reference.i | |
parent | 4854116da9c5e3c95bb8440f2ea997c54b6e1a61 (diff) | |
download | ydb-cda0c13f23f6b169fb0a49dc504b40a0aaecea09.tar.gz |
Move contrib/tools/jdk to build/platform/java/jdk/testing
Diffstat (limited to 'contrib/tools/swig/Lib/perl5/reference.i')
-rw-r--r-- | contrib/tools/swig/Lib/perl5/reference.i | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/contrib/tools/swig/Lib/perl5/reference.i b/contrib/tools/swig/Lib/perl5/reference.i new file mode 100644 index 0000000000..b424c533b1 --- /dev/null +++ b/contrib/tools/swig/Lib/perl5/reference.i @@ -0,0 +1,261 @@ +/* ----------------------------------------------------------------------------- + * reference.i + * + * Accept Perl references as pointers + * ----------------------------------------------------------------------------- */ + +/* +The following methods make Perl references work like simple C +pointers. References can only be used for simple input/output +values, not C arrays however. It should also be noted that +REFERENCES are specific to Perl and not supported in other +scripting languages at this time. + + int *REFERENCE + short *REFERENCE + long *REFERENCE + unsigned int *REFERENCE + unsigned short *REFERENCE + unsigned long *REFERENCE + unsigned char *REFERENCE + float *REFERENCE + double *REFERENCE + +For example, suppose you were trying to wrap the following function : + + void neg(double *x) { + *x = -(*x); + } + +You could wrap it with SWIG as follows : + + %include reference.i + void neg(double *REFERENCE); + +or you can use the %apply directive : + + %include reference.i + %apply double *REFERENCE { double *x }; + void neg(double *x); + +Unlike the INOUT mapping described in typemaps.i, this approach directly +modifies the value of a Perl reference. Thus, you could use it +as follows : + + $x = 3; + neg(\$x); + print "$x\n"; # Should print out -3. + +*/ + +%typemap(in) double *REFERENCE (double dvalue), double &REFERENCE(double dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if ((!SvNOK(tempsv)) && (!SvIOK(tempsv))) { + printf("Received %d\n", SvTYPE(tempsv)); + SWIG_croak("Expected a double reference."); + } + dvalue = SvNV(tempsv); + $1 = &dvalue; +} + +%typemap(in) float *REFERENCE (float dvalue), float &REFERENCE(float dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if ((!SvNOK(tempsv)) && (!SvIOK(tempsv))) { + SWIG_croak("expected a double reference"); + } + dvalue = (float) SvNV(tempsv); + $1 = &dvalue; +} + +%typemap(in) int *REFERENCE (int dvalue), int &REFERENCE (int dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if (!SvIOK(tempsv)) { + SWIG_croak("expected an integer reference"); + } + dvalue = SvIV(tempsv); + $1 = &dvalue; +} + +%typemap(in) short *REFERENCE (short dvalue), short &REFERENCE(short dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if (!SvIOK(tempsv)) { + SWIG_croak("expected an integer reference"); + } + dvalue = (short) SvIV(tempsv); + $1 = &dvalue; +} +%typemap(in) long *REFERENCE (long dvalue), long &REFERENCE(long dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if (!SvIOK(tempsv)) { + SWIG_croak("expected an integer reference"); + } + dvalue = (long) SvIV(tempsv); + $1 = &dvalue; +} +%typemap(in) unsigned int *REFERENCE (unsigned int dvalue), unsigned int &REFERENCE(unsigned int dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if (!SvIOK(tempsv)) { + SWIG_croak("expected an integer reference"); + } + dvalue = (unsigned int) SvUV(tempsv); + $1 = &dvalue; +} +%typemap(in) unsigned short *REFERENCE (unsigned short dvalue), unsigned short &REFERENCE(unsigned short dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if (!SvIOK(tempsv)) { + SWIG_croak("expected an integer reference"); + } + dvalue = (unsigned short) SvUV(tempsv); + $1 = &dvalue; +} +%typemap(in) unsigned long *REFERENCE (unsigned long dvalue), unsigned long &REFERENCE(unsigned long dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if (!SvIOK(tempsv)) { + SWIG_croak("expected an integer reference"); + } + dvalue = (unsigned long) SvUV(tempsv); + $1 = &dvalue; +} + +%typemap(in) unsigned char *REFERENCE (unsigned char dvalue), unsigned char &REFERENCE(unsigned char dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if (!SvIOK(tempsv)) { + SWIG_croak("expected an integer reference"); + } + dvalue = (unsigned char) SvUV(tempsv); + $1 = &dvalue; +} + +%typemap(in) signed char *REFERENCE (signed char dvalue), signed char &REFERENCE(signed char dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if (!SvIOK(tempsv)) { + SWIG_croak("expected an integer reference"); + } + dvalue = (signed char) SvIV(tempsv); + $1 = &dvalue; +} + +%typemap(in) bool *REFERENCE (bool dvalue), bool &REFERENCE(bool dvalue) +{ + SV *tempsv; + if (!SvROK($input)) { + SWIG_croak("expected a reference"); + } + tempsv = SvRV($input); + if (!SvIOK(tempsv)) { + SWIG_croak("expected an integer reference"); + } + dvalue = SvIV(tempsv) ? true : false; + $1 = &dvalue; +} + +%typemap(typecheck) int *REFERENCE, int &REFERENCE, + short *REFERENCE, short &REFERENCE, + long *REFERENCE, long &REFERENCE, + signed char *REFERENCE, signed char &REFERENCE, + bool *REFERENCE, bool &REFERENCE +{ + $1 = SvROK($input) && SvIOK(SvRV($input)); +} +%typemap(typecheck) double *REFERENCE, double &REFERENCE, + float *REFERENCE, float &REFERENCE +{ + $1 = SvROK($input); + if($1) { + SV *tmpsv = SvRV($input); + $1 = SvNOK(tmpsv) || SvIOK(tmpsv); + } +} +%typemap(typecheck) unsigned int *REFERENCE, unsigned int &REFERENCE, + unsigned short *REFERENCE, unsigned short &REFERENCE, + unsigned long *REFERENCE, unsigned long &REFERENCE, + unsigned char *REFERENCE, unsigned char &REFERENCE +{ + $1 = SvROK($input); + if($1) { + SV *tmpsv = SvRV($input); + $1 = SvUOK(tmpsv) || SvIOK(tmpsv); + } +} + +%typemap(argout) double *REFERENCE, double &REFERENCE, + float *REFERENCE, float &REFERENCE +{ + SV *tempsv; + tempsv = SvRV($arg); + if (!$1) SWIG_croak("expected a reference"); + sv_setnv(tempsv, (double) *$1); +} + +%typemap(argout) int *REFERENCE, int &REFERENCE, + short *REFERENCE, short &REFERENCE, + long *REFERENCE, long &REFERENCE, + signed char *REFERENCE, signed char &REFERENCE, + bool *REFERENCE, bool &REFERENCE +{ + SV *tempsv; + tempsv = SvRV($input); + if (!$1) SWIG_croak("expected a reference"); + sv_setiv(tempsv, (IV) *$1); +} + +%typemap(argout) unsigned int *REFERENCE, unsigned int &REFERENCE, + unsigned short *REFERENCE, unsigned short &REFERENCE, + unsigned long *REFERENCE, unsigned long &REFERENCE, + unsigned char *REFERENCE, unsigned char &REFERENCE +{ + SV *tempsv; + tempsv = SvRV($input); + if (!$1) SWIG_croak("expected a reference"); + sv_setuv(tempsv, (UV) *$1); +} |