562 lines
20 KiB
OpenEdge ABL
562 lines
20 KiB
OpenEdge ABL
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//
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// SWIG Typemap library
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// Dave Beazley
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// May 5, 1997
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//
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// Python implementation
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//
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// This library provides standard typemaps for modifying SWIG's behavior.
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// With enough entries in this file, I hope that very few people actually
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// ever need to write a typemap.
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//
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// Disclaimer : Unless you really understand how typemaps work, this file
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// probably isn't going to make much sense.
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//
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#ifdef AUTODOC
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%section "Typemap Library (Python)",info,after,pre,nosort,skip=1,chop_left=3,chop_right=0,chop_top=0,chop_bottom=0
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%text %{
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%include typemaps.i
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The SWIG typemap library provides a language independent mechanism for
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supporting output arguments, input values, and other C function
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calling mechanisms. The primary use of the library is to provide a
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better interface to certain C function--especially those involving
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pointers.
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%}
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#endif
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// ------------------------------------------------------------------------
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// Pointer handling
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//
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// These mappings provide support for input/output arguments and common
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// uses for C/C++ pointers.
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// ------------------------------------------------------------------------
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// INPUT typemaps.
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// These remap a C pointer to be an "INPUT" value which is passed by value
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// instead of reference.
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#ifdef AUTODOC
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%subsection "Input Methods"
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%text %{
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The following methods can be applied to turn a pointer into a simple
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"input" value. That is, instead of passing a pointer to an object,
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you would use a real value instead.
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int *INPUT
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short *INPUT
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long *INPUT
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unsigned int *INPUT
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unsigned short *INPUT
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unsigned long *INPUT
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unsigned char *INPUT
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float *INPUT
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double *INPUT
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To use these, suppose you had a C function like this :
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double fadd(double *a, double *b) {
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return *a+*b;
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}
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You could wrap it with SWIG as follows :
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%include typemaps.i
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double fadd(double *INPUT, double *INPUT);
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or you can use the %apply directive :
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%include typemaps.i
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%apply double *INPUT { double *a, double *b };
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double fadd(double *a, double *b);
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%}
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#endif
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%typemap(python,in) double *INPUT(double temp)
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{
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temp = PyFloat_AsDouble($source);
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$target = &temp;
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}
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%typemap(python,in) float *INPUT(float temp)
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{
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temp = (float) PyFloat_AsDouble($source);
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$target = &temp;
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}
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%typemap(python,in) int *INPUT(int temp)
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{
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temp = (int) PyInt_AsLong($source);
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$target = &temp;
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}
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%typemap(python,in) short *INPUT(short temp)
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{
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temp = (short) PyInt_AsLong($source);
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$target = &temp;
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}
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%typemap(python,in) long *INPUT(long temp)
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{
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temp = (long) PyInt_AsLong($source);
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$target = &temp;
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}
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%typemap(python,in) unsigned int *INPUT(unsigned int temp)
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{
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temp = (unsigned int) PyInt_AsLong($source);
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$target = &temp;
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}
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%typemap(python,in) unsigned short *INPUT(unsigned short temp)
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{
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temp = (unsigned short) PyInt_AsLong($source);
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$target = &temp;
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}
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%typemap(python,in) unsigned long *INPUT(unsigned long temp)
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{
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temp = (unsigned long) PyInt_AsLong($source);
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$target = &temp;
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}
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%typemap(python,in) unsigned char *INPUT(unsigned char temp)
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{
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temp = (unsigned char) PyInt_AsLong($source);
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$target = &temp;
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}
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%typemap(python,in) signed char *INPUT(signed char temp)
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{
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temp = (unsigned char) PyInt_AsLong($source);
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$target = &temp;
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}
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// OUTPUT typemaps. These typemaps are used for parameters that
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// are output only. The output value is appended to the result as
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// a list element.
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#ifdef AUTODOC
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%subsection "Output Methods"
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%text %{
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The following methods can be applied to turn a pointer into an "output"
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value. When calling a function, no input value would be given for
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a parameter, but an output value would be returned. In the case of
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multiple output values, they are returned in the form of a Python tuple.
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int *OUTPUT
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short *OUTPUT
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long *OUTPUT
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unsigned int *OUTPUT
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unsigned short *OUTPUT
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unsigned long *OUTPUT
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unsigned char *OUTPUT
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float *OUTPUT
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double *OUTPUT
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A Python List can also be returned by using L_OUTPUT instead of OUTPUT.
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For example, suppose you were trying to wrap the modf() function in the
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C math library which splits x into integral and fractional parts (and
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returns the integer part in one of its parameters).K:
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double modf(double x, double *ip);
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You could wrap it with SWIG as follows :
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%include typemaps.i
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double modf(double x, double *OUTPUT);
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or you can use the %apply directive :
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%include typemaps.i
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%apply double *OUTPUT { double *ip };
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double modf(double x, double *ip);
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The Python output of the function would be a tuple containing both
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output values.
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%}
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#endif
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// Helper function for List output
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%{
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static PyObject* l_output_helper(PyObject* target, PyObject* o) {
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PyObject* o2;
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if (!target) {
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target = o;
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} else if (target == Py_None) {
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Py_DECREF(Py_None);
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target = o;
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} else {
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if (!PyList_Check(target)) {
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o2 = target;
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target = PyList_New(0);
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PyList_Append(target, o2);
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Py_XDECREF(o2);
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}
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PyList_Append(target,o);
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Py_XDECREF(o);
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}
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return target;
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}
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%}
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// Force the argument to be ignored.
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%typemap(python,ignore) int *L_OUTPUT(int temp),
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short *L_OUTPUT(short temp),
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long *L_OUTPUT(long temp),
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unsigned int *L_OUTPUT(unsigned int temp),
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unsigned short *L_OUTPUT(unsigned short temp),
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unsigned long *L_OUTPUT(unsigned long temp),
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unsigned char *L_OUTPUT(unsigned char temp),
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signed char *L_OUTPUT(signed char temp),
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float *L_OUTPUT(float temp),
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double *L_OUTPUT(double temp)
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{
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$target = &temp;
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}
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%typemap(python,argout) int *L_OUTPUT,
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short *L_OUTPUT,
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long *L_OUTPUT,
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unsigned int *L_OUTPUT,
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unsigned short *L_OUTPUT,
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unsigned long *L_OUTPUT,
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unsigned char *L_OUTPUT,
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signed char *L_OUTPUT
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{
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PyObject *o;
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o = PyInt_FromLong((long) (*$source));
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l_output_helper($target,o);
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}
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%typemap(python,argout) float *L_OUTPUT,
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double *L_OUTPUT
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{
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PyObject *o;
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o = PyFloat_FromDouble((double) (*$source));
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$target = l_output_helper($target,o);
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}
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// These typemaps contributed by Robin Dunn
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//----------------------------------------------------------------------
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//
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// T_OUTPUT typemap (and helper function) to return multiple argouts as
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// a tuple instead of a list.
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//
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// Author: Robin Dunn
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//----------------------------------------------------------------------
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%{
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static PyObject* t_output_helper(PyObject* target, PyObject* o) {
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PyObject* o2;
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PyObject* o3;
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if (!target) {
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target = o;
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} else if (target == Py_None) {
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Py_DECREF(Py_None);
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target = o;
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} else {
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if (!PyTuple_Check(target)) {
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o2 = target;
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target = PyTuple_New(1);
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PyTuple_SetItem(target, 0, o2);
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}
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o3 = PyTuple_New(1);
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PyTuple_SetItem(o3, 0, o);
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o2 = target;
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target = PySequence_Concat(o2, o3);
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Py_DECREF(o2);
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Py_DECREF(o3);
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}
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return target;
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}
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%}
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// Force the argument to be ignored.
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%typemap(python,ignore) int *T_OUTPUT(int temp),
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short *T_OUTPUT(short temp),
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long *T_OUTPUT(long temp),
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unsigned int *T_OUTPUT(unsigned int temp),
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unsigned short *T_OUTPUT(unsigned short temp),
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unsigned long *T_OUTPUT(unsigned long temp),
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unsigned char *T_OUTPUT(unsigned char temp),
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float *T_OUTPUT(float temp),
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double *T_OUTPUT(double temp)
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{
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$target = &temp;
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}
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%typemap(python,argout) int *T_OUTPUT,
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short *T_OUTPUT,
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long *T_OUTPUT,
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unsigned int *T_OUTPUT,
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unsigned short *T_OUTPUT,
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unsigned long *T_OUTPUT,
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unsigned char *T_OUTPUT
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{
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PyObject *o;
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o = PyInt_FromLong((long) (*$source));
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$target = t_output_helper($target, o);
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}
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%typemap(python,argout) float *T_OUTPUT,
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double *T_OUTPUT
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{
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PyObject *o;
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o = PyFloat_FromDouble((double) (*$source));
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$target = t_output_helper($target, o);
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}
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// Set the default output typemap
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#ifdef OUTPUT_LIST
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%typemap(python,ignore) int *OUTPUT = int *L_OUTPUT;
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%typemap(python,ignore) short *OUTPUT = short *L_OUTPUT;
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%typemap(python,ignore) long *OUTPUT = long *L_OUTPUT;
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%typemap(python,ignore) unsigned *OUTPUT = unsigned *L_OUTPUT;
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%typemap(python,ignore) unsigned short *OUTPUT = unsigned short *L_OUTPUT;
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%typemap(python,ignore) unsigned long *OUTPUT = unsigned long *L_OUTPUT;
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%typemap(python,ignore) unsigned char *OUTPUT = unsigned char *L_OUTPUT;
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%typemap(python,ignore) signed char *OUTPUT = signed char *L_OUTPUT;
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%typemap(python,ignore) double *OUTPUT = double *L_OUTPUT;
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%typemap(python,ignore) float *OUTPUT = float *L_OUTPUT;
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%typemap(python,argout) int *OUTPUT = int *L_OUTPUT;
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%typemap(python,argout) short *OUTPUT = short *L_OUTPUT;
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%typemap(python,argout) long *OUTPUT = long *L_OUTPUT;
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%typemap(python,argout) unsigned *OUTPUT = unsigned *L_OUTPUT;
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%typemap(python,argout) unsigned short *OUTPUT = unsigned short *L_OUTPUT;
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%typemap(python,argout) unsigned long *OUTPUT = unsigned long *L_OUTPUT;
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%typemap(python,argout) unsigned char *OUTPUT = unsigned char *L_OUTPUT;
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%typemap(python,argout) signed char *OUTPUT = signed char *L_OUTPUT;
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%typemap(python,argout) double *OUTPUT = double *L_OUTPUT;
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%typemap(python,argout) float *OUTPUT = float *L_OUTPUT;
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#else
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%typemap(python,ignore) int *OUTPUT = int *T_OUTPUT;
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%typemap(python,ignore) short *OUTPUT = short *T_OUTPUT;
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%typemap(python,ignore) long *OUTPUT = long *T_OUTPUT;
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%typemap(python,ignore) unsigned *OUTPUT = unsigned *T_OUTPUT;
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%typemap(python,ignore) unsigned short *OUTPUT = unsigned short *T_OUTPUT;
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%typemap(python,ignore) unsigned long *OUTPUT = unsigned long *T_OUTPUT;
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%typemap(python,ignore) unsigned char *OUTPUT = unsigned char *T_OUTPUT;
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%typemap(python,ignore) signed char *OUTPUT = signed char *T_OUTPUT;
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%typemap(python,ignore) double *OUTPUT = double *T_OUTPUT;
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%typemap(python,ignore) float *OUTPUT = float *T_OUTPUT;
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%typemap(python,argout) int *OUTPUT = int *T_OUTPUT;
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%typemap(python,argout) short *OUTPUT = short *T_OUTPUT;
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%typemap(python,argout) long *OUTPUT = long *T_OUTPUT;
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%typemap(python,argout) unsigned *OUTPUT = unsigned *T_OUTPUT;
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%typemap(python,argout) unsigned short *OUTPUT = unsigned short *T_OUTPUT;
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%typemap(python,argout) unsigned long *OUTPUT = unsigned long *T_OUTPUT;
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%typemap(python,argout) unsigned char *OUTPUT = unsigned char *T_OUTPUT;
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%typemap(python,argout) signed char *OUTPUT = signed char *T_OUTPUT;
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%typemap(python,argout) double *OUTPUT = double *T_OUTPUT;
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%typemap(python,argout) float *OUTPUT = float *T_OUTPUT;
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#endif
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// INOUT
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// Mappings for an argument that is both an input and output
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// parameter
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#ifdef AUTODOC
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%subsection "Input/Output Methods"
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%text %{
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The following methods can be applied to make a function parameter both
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an input and output value. This combines the behavior of both the
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"INPUT" and "OUTPUT" methods described earlier. Output values are
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returned in the form of a Python tuple. To return a Python list,
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using L_INOUT instead.
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int *INOUT
|
||
|
|
short *INOUT
|
||
|
|
long *INOUT
|
||
|
|
unsigned int *INOUT
|
||
|
|
unsigned short *INOUT
|
||
|
|
unsigned long *INOUT
|
||
|
|
unsigned char *INOUT
|
||
|
|
float *INOUT
|
||
|
|
double *INOUT
|
||
|
|
|
||
|
|
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 typemaps.i
|
||
|
|
void neg(double *INOUT);
|
||
|
|
|
||
|
|
or you can use the %apply directive :
|
||
|
|
|
||
|
|
%include typemaps.i
|
||
|
|
%apply double *INOUT { double *x };
|
||
|
|
void neg(double *x);
|
||
|
|
|
||
|
|
Unlike C, this mapping does not directly modify the input value (since
|
||
|
|
this makes no sense in Python). Rather, the modified input value shows
|
||
|
|
up as the return value of the function. Thus, to apply this function
|
||
|
|
to a Python variable you might do this :
|
||
|
|
|
||
|
|
x = neg(x)
|
||
|
|
|
||
|
|
Note : previous versions of SWIG used the symbol 'BOTH' to mark
|
||
|
|
input/output arguments. This is still supported, but will be slowly
|
||
|
|
phased out in future releases.
|
||
|
|
%}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
%typemap(python,in) int *INOUT = int *INPUT;
|
||
|
|
%typemap(python,in) short *INOUT = short *INPUT;
|
||
|
|
%typemap(python,in) long *INOUT = long *INPUT;
|
||
|
|
%typemap(python,in) unsigned *INOUT = unsigned *INPUT;
|
||
|
|
%typemap(python,in) unsigned short *INOUT = unsigned short *INPUT;
|
||
|
|
%typemap(python,in) unsigned long *INOUT = unsigned long *INPUT;
|
||
|
|
%typemap(python,in) unsigned char *INOUT = unsigned char *INPUT;
|
||
|
|
%typemap(python,in) float *INOUT = float *INPUT;
|
||
|
|
%typemap(python,in) double *INOUT = double *INPUT;
|
||
|
|
|
||
|
|
%typemap(python,argout) int *INOUT = int *OUTPUT;
|
||
|
|
%typemap(python,argout) short *INOUT = short *OUTPUT;
|
||
|
|
%typemap(python,argout) long *INOUT = long *OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned *INOUT = unsigned *OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned short *INOUT = unsigned short *OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned long *INOUT = unsigned long *OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned char *INOUT = unsigned char *OUTPUT;
|
||
|
|
%typemap(python,argout) float *INOUT = float *OUTPUT;
|
||
|
|
%typemap(python,argout) double *INOUT = double *OUTPUT;
|
||
|
|
|
||
|
|
%typemap(python,in) int *T_INOUT = int *INPUT;
|
||
|
|
%typemap(python,in) short *T_INOUT = short *INPUT;
|
||
|
|
%typemap(python,in) long *T_INOUT = long *INPUT;
|
||
|
|
%typemap(python,in) unsigned *T_INOUT = unsigned *INPUT;
|
||
|
|
%typemap(python,in) unsigned short *T_INOUT = unsigned short *INPUT;
|
||
|
|
%typemap(python,in) unsigned long *T_INOUT = unsigned long *INPUT;
|
||
|
|
%typemap(python,in) unsigned char *T_INOUT = unsigned char *INPUT;
|
||
|
|
%typemap(python,in) float *T_INOUT = float *INPUT;
|
||
|
|
%typemap(python,in) double *T_INOUT = double *INPUT;
|
||
|
|
|
||
|
|
%typemap(python,argout) int *T_INOUT = int *T_OUTPUT;
|
||
|
|
%typemap(python,argout) short *T_INOUT = short *T_OUTPUT;
|
||
|
|
%typemap(python,argout) long *T_INOUT = long *T_OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned *T_INOUT = unsigned *T_OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned short *T_INOUT = unsigned short *T_OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned long *T_INOUT = unsigned long *T_OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned char *T_INOUT = unsigned char *T_OUTPUT;
|
||
|
|
%typemap(python,argout) float *T_INOUT = float *T_OUTPUT;
|
||
|
|
%typemap(python,argout) double *T_INOUT = double *T_OUTPUT;
|
||
|
|
|
||
|
|
%typemap(python,in) int *L_INOUT = int *INPUT;
|
||
|
|
%typemap(python,in) short *L_INOUT = short *INPUT;
|
||
|
|
%typemap(python,in) long *L_INOUT = long *INPUT;
|
||
|
|
%typemap(python,in) unsigned *L_INOUT = unsigned *INPUT;
|
||
|
|
%typemap(python,in) unsigned short *L_INOUT = unsigned short *INPUT;
|
||
|
|
%typemap(python,in) unsigned long *L_INOUT = unsigned long *INPUT;
|
||
|
|
%typemap(python,in) unsigned char *L_INOUT = unsigned char *INPUT;
|
||
|
|
%typemap(python,in) float *L_INOUT = float *INPUT;
|
||
|
|
%typemap(python,in) double *L_INOUT = double *INPUT;
|
||
|
|
|
||
|
|
%typemap(python,argout) int *L_INOUT = int *L_OUTPUT;
|
||
|
|
%typemap(python,argout) short *L_INOUT = short *L_OUTPUT;
|
||
|
|
%typemap(python,argout) long *L_INOUT = long *L_OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned *L_INOUT = unsigned *L_OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned short *L_INOUT = unsigned short *L_OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned long *L_INOUT = unsigned long *L_OUTPUT;
|
||
|
|
%typemap(python,argout) unsigned char *L_INOUT = unsigned char *L_OUTPUT;
|
||
|
|
%typemap(python,argout) float *L_INOUT = float *L_OUTPUT;
|
||
|
|
%typemap(python,argout) double *L_INOUT = double *L_OUTPUT;
|
||
|
|
|
||
|
|
// Backwards compatibility
|
||
|
|
|
||
|
|
%typemap(python,in) int *BOTH = int *INOUT;
|
||
|
|
%typemap(python,in) short *BOTH = short *INOUT;
|
||
|
|
%typemap(python,in) long *BOTH = long *INOUT;
|
||
|
|
%typemap(python,in) unsigned *BOTH = unsigned *INOUT;
|
||
|
|
%typemap(python,in) unsigned short *BOTH = unsigned short *INOUT;
|
||
|
|
%typemap(python,in) unsigned long *BOTH = unsigned long *INOUT;
|
||
|
|
%typemap(python,in) unsigned char *BOTH = unsigned char *INOUT;
|
||
|
|
%typemap(python,in) float *BOTH = float *INOUT;
|
||
|
|
%typemap(python,in) double *BOTH = double *INOUT;
|
||
|
|
|
||
|
|
%typemap(python,argout) int *BOTH = int *INOUT;
|
||
|
|
%typemap(python,argout) short *BOTH = short *INOUT;
|
||
|
|
%typemap(python,argout) long *BOTH = long *INOUT;
|
||
|
|
%typemap(python,argout) unsigned *BOTH = unsigned *INOUT;
|
||
|
|
%typemap(python,argout) unsigned short *BOTH = unsigned short *INOUT;
|
||
|
|
%typemap(python,argout) unsigned long *BOTH = unsigned long *INOUT;
|
||
|
|
%typemap(python,argout) unsigned char *BOTH = unsigned char *INOUT;
|
||
|
|
%typemap(python,argout) float *BOTH = float *INOUT;
|
||
|
|
%typemap(python,argout) double *BOTH = double *INOUT;
|
||
|
|
|
||
|
|
%typemap(python,in) int *T_BOTH = int *T_INOUT;
|
||
|
|
%typemap(python,in) short *T_BOTH = short *T_INOUT;
|
||
|
|
%typemap(python,in) long *T_BOTH = long *T_INOUT;
|
||
|
|
%typemap(python,in) unsigned *T_BOTH = unsigned *T_INOUT;
|
||
|
|
%typemap(python,in) unsigned short *T_BOTH = unsigned short *T_INOUT;
|
||
|
|
%typemap(python,in) unsigned long *T_BOTH = unsigned long *T_INOUT;
|
||
|
|
%typemap(python,in) unsigned char *T_BOTH = unsigned char *T_INOUT;
|
||
|
|
%typemap(python,in) float *T_BOTH = float *T_INOUT;
|
||
|
|
%typemap(python,in) double *T_BOTH = double *T_INOUT;
|
||
|
|
|
||
|
|
%typemap(python,argout) int *T_BOTH = int *T_INOUT;
|
||
|
|
%typemap(python,argout) short *T_BOTH = short *T_INOUT;
|
||
|
|
%typemap(python,argout) long *T_BOTH = long *T_INOUT;
|
||
|
|
%typemap(python,argout) unsigned *T_BOTH = unsigned *T_INOUT;
|
||
|
|
%typemap(python,argout) unsigned short *T_BOTH = unsigned short *T_INOUT;
|
||
|
|
%typemap(python,argout) unsigned long *T_BOTH = unsigned long *T_INOUT;
|
||
|
|
%typemap(python,argout) unsigned char *T_BOTH = unsigned char *T_INOUT;
|
||
|
|
%typemap(python,argout) float *T_BOTH = float *T_INOUT;
|
||
|
|
%typemap(python,argout) double *T_BOTH = double *T_INOUT;
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
// Special types
|
||
|
|
//
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
#ifdef AUTODOC
|
||
|
|
%subsection "Special Methods"
|
||
|
|
|
||
|
|
%text %{
|
||
|
|
The typemaps.i library also provides the following mappings :
|
||
|
|
|
||
|
|
PyObject *
|
||
|
|
|
||
|
|
When a PyObject * appears as either an input value or return
|
||
|
|
value of a function, SWIG passes it through unmodified. Thus,
|
||
|
|
if you want to write a C function that operates on PyObjects,
|
||
|
|
it is easy to write. For example :
|
||
|
|
|
||
|
|
%include typemaps.i
|
||
|
|
PyObject *spam(PyObject *obj1, int n);
|
||
|
|
|
||
|
|
Unlike normal Python wrapper functions, These functions can
|
||
|
|
use any combination of parameters that you wish.
|
||
|
|
|
||
|
|
%}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
// If a PyObject * appears as either an argument or a function return
|
||
|
|
// value, simply pass it straight through.
|
||
|
|
|
||
|
|
%typemap(python,in) PyObject * {
|
||
|
|
$target = $source;
|
||
|
|
}
|
||
|
|
|
||
|
|
%typemap(python,out) PyObject * {
|
||
|
|
$target = $source;
|
||
|
|
}
|
||
|
|
|