+++ /dev/null
-//
-// SWIG pointer conversion and utility library
-//
-// Dave Beazley
-// April 19, 1997
-//
-// Python specific implementation. This file is included
-// by the file ../pointer.i
-
-%{
-
-#include <ctype.h>
-
-/*------------------------------------------------------------------
- ptrcast(value,type)
-
- Constructs a new pointer value. Value may either be a string
- or an integer. Type is a string corresponding to either the
- C datatype or mangled datatype.
-
- ptrcast(0,"Vector *")
- or
- ptrcast(0,"Vector_p")
- ------------------------------------------------------------------ */
-
-static PyObject *ptrcast(PyObject *_PTRVALUE, char *type) {
-
- char *r,*s;
- void *ptr;
- PyObject *obj;
- char *typestr,*c;
-
- /* Produce a "mangled" version of the type string. */
-
- typestr = (char *) malloc(strlen(type)+2);
-
- /* Go through and munge the typestring */
-
- r = typestr;
- *(r++) = '_';
- c = type;
- while (*c) {
- if (!isspace(*c)) {
- if ((*c == '*') || (*c == '&')) {
- *(r++) = 'p';
- }
- else *(r++) = *c;
- } else {
- *(r++) = '_';
- }
- c++;
- }
- *(r++) = 0;
-
- /* Check to see what kind of object _PTRVALUE is */
-
- if (PyInt_Check(_PTRVALUE)) {
- ptr = (void *) PyInt_AsLong(_PTRVALUE);
- /* Received a numerical value. Make a pointer out of it */
- r = (char *) malloc(strlen(typestr)+22);
- if (ptr) {
- SWIG_MakePtr(r, ptr, typestr);
- } else {
- sprintf(r,"_0%s",typestr);
- }
- obj = PyString_FromString(r);
- free(r);
- } else if (PyString_Check(_PTRVALUE)) {
- /* Have a real pointer value now. Try to strip out the pointer
- value */
- s = PyString_AsString(_PTRVALUE);
- r = (char *) malloc(strlen(type)+22);
-
- /* Now extract the pointer value */
- if (!SWIG_GetPtr(s,&ptr,0)) {
- if (ptr) {
- SWIG_MakePtr(r,ptr,typestr);
- } else {
- sprintf(r,"_0%s",typestr);
- }
- obj = PyString_FromString(r);
- } else {
- obj = NULL;
- }
- free(r);
- } else {
- obj = NULL;
- }
- free(typestr);
- if (!obj)
- PyErr_SetString(PyExc_TypeError,"Type error in ptrcast. Argument is not a valid pointer value.");
- return obj;
-}
-
-/*------------------------------------------------------------------
- ptrvalue(ptr,type = 0)
-
- Attempts to dereference a pointer value. If type is given, it
- will try to use that type. Otherwise, this function will attempt
- to "guess" the proper datatype by checking against all of the
- builtin C datatypes.
- ------------------------------------------------------------------ */
-
-static PyObject *ptrvalue(PyObject *_PTRVALUE, int index, char *type) {
- void *ptr;
- char *s;
- PyObject *obj;
-
- if (!PyString_Check(_PTRVALUE)) {
- PyErr_SetString(PyExc_TypeError,"Type error in ptrvalue. Argument is not a valid pointer value.");
- return NULL;
- }
- s = PyString_AsString(_PTRVALUE);
- if (SWIG_GetPtr(s,&ptr,0)) {
- PyErr_SetString(PyExc_TypeError,"Type error in ptrvalue. Argument is not a valid pointer value.");
- return NULL;
- }
-
- /* If no datatype was passed, try a few common datatypes first */
-
- if (!type) {
-
- /* No datatype was passed. Type to figure out if it's a common one */
-
- if (!SWIG_GetPtr(s,&ptr,"_int_p")) {
- type = "int";
- } else if (!SWIG_GetPtr(s,&ptr,"_double_p")) {
- type = "double";
- } else if (!SWIG_GetPtr(s,&ptr,"_short_p")) {
- type = "short";
- } else if (!SWIG_GetPtr(s,&ptr,"_long_p")) {
- type = "long";
- } else if (!SWIG_GetPtr(s,&ptr,"_float_p")) {
- type = "float";
- } else if (!SWIG_GetPtr(s,&ptr,"_char_p")) {
- type = "char";
- } else if (!SWIG_GetPtr(s,&ptr,"_char_pp")) {
- type = "char *";
- } else {
- type = "unknown";
- }
- }
-
- if (!ptr) {
- PyErr_SetString(PyExc_TypeError,"Unable to dereference NULL pointer.");
- return NULL;
- }
-
- /* Now we have a datatype. Try to figure out what to do about it */
- if (strcmp(type,"int") == 0) {
- obj = PyInt_FromLong((long) *(((int *) ptr) + index));
- } else if (strcmp(type,"double") == 0) {
- obj = PyFloat_FromDouble((double) *(((double *) ptr)+index));
- } else if (strcmp(type,"short") == 0) {
- obj = PyInt_FromLong((long) *(((short *) ptr)+index));
- } else if (strcmp(type,"long") == 0) {
- obj = PyInt_FromLong((long) *(((long *) ptr)+index));
- } else if (strcmp(type,"float") == 0) {
- obj = PyFloat_FromDouble((double) *(((float *) ptr)+index));
- } else if (strcmp(type,"char") == 0) {
- obj = PyString_FromString(((char *) ptr)+index);
- } else if (strcmp(type,"char *") == 0) {
- char *c = *(((char **) ptr)+index);
- if (c) obj = PyString_FromString(c);
- else obj = PyString_FromString("NULL");
- } else {
- PyErr_SetString(PyExc_TypeError,"Unable to dereference unsupported datatype.");
- return NULL;
- }
- return obj;
-}
-
-/*------------------------------------------------------------------
- ptrcreate(type,value = 0,numelements = 1)
-
- Attempts to create a new object of given type. Type must be
- a basic C datatype. Will not create complex objects.
- ------------------------------------------------------------------ */
-
-static PyObject *ptrcreate(char *type, PyObject *_PYVALUE, int numelements) {
- void *ptr;
- PyObject *obj;
- int sz;
- char *cast;
- char temp[40];
-
- /* Check the type string against a variety of possibilities */
-
- if (strcmp(type,"int") == 0) {
- sz = sizeof(int)*numelements;
- cast = "_int_p";
- } else if (strcmp(type,"short") == 0) {
- sz = sizeof(short)*numelements;
- cast = "_short_p";
- } else if (strcmp(type,"long") == 0) {
- sz = sizeof(long)*numelements;
- cast = "_long_p";
- } else if (strcmp(type,"double") == 0) {
- sz = sizeof(double)*numelements;
- cast = "_double_p";
- } else if (strcmp(type,"float") == 0) {
- sz = sizeof(float)*numelements;
- cast = "_float_p";
- } else if (strcmp(type,"char") == 0) {
- sz = sizeof(char)*numelements;
- cast = "_char_p";
- } else if (strcmp(type,"char *") == 0) {
- sz = sizeof(char *)*(numelements+1);
- cast = "_char_pp";
- } else {
- PyErr_SetString(PyExc_TypeError,"Unable to create unknown datatype.");
- return NULL;
- }
-
- /* Create the new object */
-
- ptr = (void *) malloc(sz);
- if (!ptr) {
- PyErr_SetString(PyExc_MemoryError,"Out of memory in swig_create.");
- return NULL;
- }
-
- /* Now try to set its default value */
-
- if (_PYVALUE) {
- if (strcmp(type,"int") == 0) {
- int *ip,i,ivalue;
- ivalue = (int) PyInt_AsLong(_PYVALUE);
- ip = (int *) ptr;
- for (i = 0; i < numelements; i++)
- ip[i] = ivalue;
- } else if (strcmp(type,"short") == 0) {
- short *ip,ivalue;
- int i;
- ivalue = (short) PyInt_AsLong(_PYVALUE);
- ip = (short *) ptr;
- for (i = 0; i < numelements; i++)
- ip[i] = ivalue;
- } else if (strcmp(type,"long") == 0) {
- long *ip,ivalue;
- int i;
- ivalue = (long) PyInt_AsLong(_PYVALUE);
- ip = (long *) ptr;
- for (i = 0; i < numelements; i++)
- ip[i] = ivalue;
- } else if (strcmp(type,"double") == 0) {
- double *ip,ivalue;
- int i;
- ivalue = (double) PyFloat_AsDouble(_PYVALUE);
- ip = (double *) ptr;
- for (i = 0; i < numelements; i++)
- ip[i] = ivalue;
- } else if (strcmp(type,"float") == 0) {
- float *ip,ivalue;
- int i;
- ivalue = (float) PyFloat_AsDouble(_PYVALUE);
- ip = (float *) ptr;
- for (i = 0; i < numelements; i++)
- ip[i] = ivalue;
- } else if (strcmp(type,"char") == 0) {
- char *ip,*ivalue;
- ivalue = (char *) PyString_AsString(_PYVALUE);
- ip = (char *) ptr;
- strncpy(ip,ivalue,numelements-1);
- } else if (strcmp(type,"char *") == 0) {
- char **ip, *ivalue;
- int i;
- ivalue = (char *) PyString_AsString(_PYVALUE);
- ip = (char **) ptr;
- for (i = 0; i < numelements; i++) {
- if (ivalue) {
- ip[i] = (char *) malloc(strlen(ivalue)+1);
- strcpy(ip[i],ivalue);
- } else {
- ip[i] = 0;
- }
- }
- ip[numelements] = 0;
- }
- }
- /* Create the pointer value */
-
- SWIG_MakePtr(temp,ptr,cast);
- obj = PyString_FromString(temp);
- return obj;
-}
-
-
-/*------------------------------------------------------------------
- ptrset(ptr,value,index = 0,type = 0)
-
- Attempts to set the value of a pointer variable. If type is
- given, we will use that type. Otherwise, we'll guess the datatype.
- ------------------------------------------------------------------ */
-
-static PyObject *ptrset(PyObject *_PTRVALUE, PyObject *_PYVALUE, int index, char *type) {
- void *ptr;
- char *s;
- PyObject *obj;
-
- if (!PyString_Check(_PTRVALUE)) {
- PyErr_SetString(PyExc_TypeError,"Type error in ptrset. Argument is not a valid pointer value.");
- return NULL;
- }
- s = PyString_AsString(_PTRVALUE);
- if (SWIG_GetPtr(s,&ptr,0)) {
- PyErr_SetString(PyExc_TypeError,"Type error in ptrset. Argument is not a valid pointer value.");
- return NULL;
- }
-
- /* If no datatype was passed, try a few common datatypes first */
-
- if (!type) {
-
- /* No datatype was passed. Type to figure out if it's a common one */
-
- if (!SWIG_GetPtr(s,&ptr,"_int_p")) {
- type = "int";
- } else if (!SWIG_GetPtr(s,&ptr,"_double_p")) {
- type = "double";
- } else if (!SWIG_GetPtr(s,&ptr,"_short_p")) {
- type = "short";
- } else if (!SWIG_GetPtr(s,&ptr,"_long_p")) {
- type = "long";
- } else if (!SWIG_GetPtr(s,&ptr,"_float_p")) {
- type = "float";
- } else if (!SWIG_GetPtr(s,&ptr,"_char_p")) {
- type = "char";
- } else if (!SWIG_GetPtr(s,&ptr,"_char_pp")) {
- type = "char *";
- } else {
- type = "unknown";
- }
- }
-
- if (!ptr) {
- PyErr_SetString(PyExc_TypeError,"Unable to set NULL pointer.");
- return NULL;
- }
-
- /* Now we have a datatype. Try to figure out what to do about it */
- if (strcmp(type,"int") == 0) {
- *(((int *) ptr)+index) = (int) PyInt_AsLong(_PYVALUE);
- } else if (strcmp(type,"double") == 0) {
- *(((double *) ptr)+index) = (double) PyFloat_AsDouble(_PYVALUE);
- } else if (strcmp(type,"short") == 0) {
- *(((short *) ptr)+index) = (short) PyInt_AsLong(_PYVALUE);
- } else if (strcmp(type,"long") == 0) {
- *(((long *) ptr)+index) = (long) PyInt_AsLong(_PYVALUE);
- } else if (strcmp(type,"float") == 0) {
- *(((float *) ptr)+index) = (float) PyFloat_AsDouble(_PYVALUE);
- } else if (strcmp(type,"char") == 0) {
- char *c = PyString_AsString(_PYVALUE);
- strcpy(((char *) ptr)+index, c);
- } else if (strcmp(type,"char *") == 0) {
- char *c = PyString_AsString(_PYVALUE);
- char **ca = (char **) ptr;
- if (ca[index]) free(ca[index]);
- if (strcmp(c,"NULL") == 0) {
- ca[index] = 0;
- } else {
- ca[index] = (char *) malloc(strlen(c)+1);
- strcpy(ca[index],c);
- }
- } else {
- PyErr_SetString(PyExc_TypeError,"Unable to set unsupported datatype.");
- return NULL;
- }
- Py_INCREF(Py_None);
- return Py_None;
-}
-
-
-/*------------------------------------------------------------------
- ptradd(ptr,offset)
-
- Adds a value to an existing pointer value. Will do a type-dependent
- add for basic datatypes. For other datatypes, will do a byte-add.
- ------------------------------------------------------------------ */
-
-static PyObject *ptradd(PyObject *_PTRVALUE, int offset) {
-
- char *r,*s;
- void *ptr,*junk;
- PyObject *obj;
- char *type;
-
- /* Check to see what kind of object _PTRVALUE is */
-
- if (PyString_Check(_PTRVALUE)) {
- /* Have a potential pointer value now. Try to strip out the value */
- s = PyString_AsString(_PTRVALUE);
-
- /* Try to handle a few common datatypes first */
-
- if (!SWIG_GetPtr(s,&ptr,"_int_p")) {
- ptr = (void *) (((int *) ptr) + offset);
- } else if (!SWIG_GetPtr(s,&ptr,"_double_p")) {
- ptr = (void *) (((double *) ptr) + offset);
- } else if (!SWIG_GetPtr(s,&ptr,"_short_p")) {
- ptr = (void *) (((short *) ptr) + offset);
- } else if (!SWIG_GetPtr(s,&ptr,"_long_p")) {
- ptr = (void *) (((long *) ptr) + offset);
- } else if (!SWIG_GetPtr(s,&ptr,"_float_p")) {
- ptr = (void *) (((float *) ptr) + offset);
- } else if (!SWIG_GetPtr(s,&ptr,"_char_p")) {
- ptr = (void *) (((char *) ptr) + offset);
- } else if (!SWIG_GetPtr(s,&ptr,0)) {
- ptr = (void *) (((char *) ptr) + offset);
- } else {
- PyErr_SetString(PyExc_TypeError,"Type error in ptradd. Argument is not a valid pointer value.");
- return NULL;
- }
- type = SWIG_GetPtr(s,&junk,"INVALID POINTER");
- r = (char *) malloc(strlen(type)+20);
- if (ptr) {
- SWIG_MakePtr(r,ptr,type);
- } else {
- sprintf(r,"_0%s",type);
- }
- obj = PyString_FromString(r);
- free(r);
- }
- return obj;
-}
-
-/*------------------------------------------------------------------
- ptrmap(type1,type2)
-
- Allows a mapping between type1 and type2. (Like a typedef)
- ------------------------------------------------------------------ */
-
-static void ptrmap(char *type1, char *type2) {
-
- char *typestr1,*typestr2,*c,*r;
-
- /* Produce a "mangled" version of the type string. */
-
- typestr1 = (char *) malloc(strlen(type1)+2);
-
- /* Go through and munge the typestring */
-
- r = typestr1;
- *(r++) = '_';
- c = type1;
- while (*c) {
- if (!isspace(*c)) {
- if ((*c == '*') || (*c == '&')) {
- *(r++) = 'p';
- }
- else *(r++) = *c;
- } else {
- *(r++) = '_';
- }
- c++;
- }
- *(r++) = 0;
-
- typestr2 = (char *) malloc(strlen(type2)+2);
-
- /* Go through and munge the typestring */
-
- r = typestr2;
- *(r++) = '_';
- c = type2;
- while (*c) {
- if (!isspace(*c)) {
- if ((*c == '*') || (*c == '&')) {
- *(r++) = 'p';
- }
- else *(r++) = *c;
- } else {
- *(r++) = '_';
- }
- c++;
- }
- *(r++) = 0;
- SWIG_RegisterMapping(typestr1,typestr2,0);
- SWIG_RegisterMapping(typestr2,typestr1,0);
-}
-
-/*------------------------------------------------------------------
- ptrfree(ptr)
-
- Destroys a pointer value
- ------------------------------------------------------------------ */
-
-PyObject *ptrfree(PyObject *_PTRVALUE) {
- void *ptr, *junk;
- char *s;
-
- if (!PyString_Check(_PTRVALUE)) {
- PyErr_SetString(PyExc_TypeError,"Type error in ptrfree. Argument is not a valid pointer value.");
- return NULL;
- }
- s = PyString_AsString(_PTRVALUE);
- if (SWIG_GetPtr(s,&ptr,0)) {
- PyErr_SetString(PyExc_TypeError,"Type error in ptrfree. Argument is not a valid pointer value.");
- return NULL;
- }
-
- /* Check to see if this pointer is a char ** */
- if (!SWIG_GetPtr(s,&junk,"_char_pp")) {
- char **c = (char **) ptr;
- if (c) {
- int i = 0;
- while (c[i]) {
- free(c[i]);
- i++;
- }
- }
- }
- if (ptr)
- free((char *) ptr);
-
- Py_INCREF(Py_None);
- return Py_None;
-}
-
-%}
-%typemap(python,in) PyObject *ptr, PyObject *value {
- $target = $source;
-}
-
-%typemap(python,out) PyObject *ptrcast,
- PyObject *ptrvalue,
- PyObject *ptrcreate,
- PyObject *ptrset,
- PyObject *ptradd,
- PyObject *ptrfree
-{
- $target = $source;
-}
-
-%typemap(python,ret) int ptrset {
- if ($source == -1) return NULL;
-}
-
-PyObject *ptrcast(PyObject *ptr, char *type);
-// Casts a pointer ptr to a new datatype given by the string type.
-// type may be either the SWIG generated representation of a datatype
-// or the C representation. For example :
-//
-// ptrcast(ptr,"double_p"); # Python representation
-// ptrcast(ptr,"double *"); # C representation
-//
-// A new pointer value is returned. ptr may also be an integer
-// value in which case the value will be used to set the pointer
-// value. For example :
-//
-// a = ptrcast(0,"Vector_p");
-//
-// Will create a NULL pointer of type "Vector_p"
-//
-// The casting operation is sensitive to formatting. As a result,
-// "double *" is different than "double*". As a result of thumb,
-// there should always be exactly one space between the C datatype
-// and any pointer specifiers (*).
-
-PyObject *ptrvalue(PyObject *ptr, int index = 0, char *type = 0);
-// Returns the value that a pointer is pointing to (ie. dereferencing).
-// The type is automatically inferred by the pointer type--thus, an
-// integer pointer will return an integer, a double will return a double,
-// and so on. The index and type fields are optional parameters. When
-// an index is specified, this function returns the value of ptr[index].
-// This allows array access. When a type is specified, it overrides
-// the given pointer type. Examples :
-//
-// ptrvalue(a) # Returns the value *a
-// ptrvalue(a,10) # Returns the value a[10]
-// ptrvalue(a,10,"double") # Returns a[10] assuming a is a double *
-
-PyObject *ptrset(PyObject *ptr, PyObject *value, int index = 0, char *type = 0);
-// Sets the value pointed to by a pointer. The type is automatically
-// inferred from the pointer type so this function will work for
-// integers, floats, doubles, etc... The index and type fields are
-// optional. When an index is given, it provides array access. When
-// type is specified, it overrides the given pointer type. Examples :
-//
-// ptrset(a,3) # Sets the value *a = 3
-// ptrset(a,3,10) # Sets a[10] = 3
-// ptrset(a,3,10,"int") # Sets a[10] = 3 assuming a is a int *
-
-PyObject *ptrcreate(char *type, PyObject *value = 0, int nitems = 1);
-// Creates a new object and returns a pointer to it. This function
-// can be used to create various kinds of objects for use in C functions.
-// type specifies the basic C datatype to create and value is an
-// optional parameter that can be used to set the initial value of the
-// object. nitems is an optional parameter that can be used to create
-// an array. This function results in a memory allocation using
-// malloc(). Examples :
-//
-// a = ptrcreate("double") # Create a new double, return pointer
-// a = ptrcreate("int",7) # Create an integer, set value to 7
-// a = ptrcreate("int",0,1000) # Create an integer array with initial
-// # values all set to zero
-//
-// This function only recognizes a few common C datatypes as listed below :
-//
-// int, short, long, float, double, char, char *, void
-//
-// All other datatypes will result in an error. However, other
-// datatypes can be created by using the ptrcast function. For
-// example:
-//
-// a = ptrcast(ptrcreate("int",0,100),"unsigned int *")
-
-PyObject *ptrfree(PyObject *ptr);
-// Destroys the memory pointed to by ptr. This function calls free()
-// and should only be used with objects created by ptrcreate(). Since
-// this function calls free, it may work with other objects, but this
-// is generally discouraged unless you absolutely know what you're
-// doing.
-
-PyObject *ptradd(PyObject *ptr, int offset);
-// Adds a value to the current pointer value. For the C datatypes of
-// int, short, long, float, double, and char, the offset value is the
-// number of objects and works in exactly the same manner as in C. For
-// example, the following code steps through the elements of an array
-//
-// a = ptrcreate("double",0,100); # Create an array double a[100]
-// b = a;
-// for i in range(0,100):
-// ptrset(b,0.0025*i); # set *b = 0.0025*i
-// b = ptradd(b,1); # b++ (go to next double)
-//
-// In this case, adding one to b goes to the next double.
-//
-// For all other datatypes (including all complex datatypes), the
-// offset corresponds to bytes. This function does not perform any
-// bounds checking and negative offsets are perfectly legal.
-
-void ptrmap(char *type1, char *type2);
-// This is a rarely used function that performs essentially the same
-// operation as a C typedef. To manage datatypes at run-time, SWIG
-// modules manage an internal symbol table of type mappings. This
-// table keeps track of which types are equivalent to each other. The
-// ptrmap() function provides a mechanism for scripts to add symbols
-// to this table. For example :
-//
-// ptrmap("double_p","Real_p");
-//
-// would make the types "doublePtr" and "RealPtr" equivalent to each
-// other. Pointers of either type could now be used interchangably.
-//
-// Normally this function is not needed, but it can be used to
-// circumvent SWIG's normal type-checking behavior or to work around
-// weird type-handling problems.
-
-
-
-
projects / wxWidgets.git / blobdiff