/tags/rel-1.3.35/Lib/perl5/reference.i
Swig | 235 lines | 173 code | 11 blank | 51 comment | 0 complexity | 616482c6f426140c42edb95df05b1258 MD5 | raw file
Possible License(s): LGPL-2.1, Cube, GPL-3.0, 0BSD, GPL-2.0
- /* -----------------------------------------------------------------------------
- * See the LICENSE file for information on copyright, usage and redistribution
- * of SWIG, and the README file for authors - http://www.swig.org/release.html.
- *
- * 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 a 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 a 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 a 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 a 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 a 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 a 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 a 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 a 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 a integer reference");
- }
- dvalue = (bool) SvIV(tempsv);
- $1 = &dvalue;
- }
- %typemap(argout) double *REFERENCE, double &REFERENCE,
- float *REFERENCE, float &REFERENCE
- {
- SV *tempsv;
- tempsv = SvRV($arg);
- if (!$1) SWIG_croak("expected a reference");
- sv_setnv(tempsv, (double) *$1);
- }
- %typemap(argout) int *REFERENCE, int &REFERENCE,
- short *REFERENCE, short &REFERENCE,
- long *REFERENCE, long &REFERENCE,
- signed char *REFERENCE, unsigned char &REFERENCE,
- bool *REFERENCE, bool &REFERENCE
- {
- SV *tempsv;
- tempsv = SvRV($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);
- }