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baldurk
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* On windows it's strongly desired to be able to compile straight out of a clean checkout or source download. This means anyone can download the source and investigate something quickly, without having to worry about the hassle of figuring out how the project downloads 3rd party dependencies, fetching them, getting them registered in the right place. * This can't be put in a submodule as git submodules don't get downloaded by default so people new to git will get confusing compilation messages, and someone downloading the source from github directly without cloning via git won't get submodules included. * It does add some extra size to a fresh download/checkout which is unfortunate, but absolutely worth the cost. Shallow checkouts still aren't unfeasibly large, and it's only a one-off cost at clone time.
181 lines
3.5 KiB
OpenEdge ABL
181 lines
3.5 KiB
OpenEdge ABL
/* -----------------------------------------------------------------------------
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* cpointer.i
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*
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* SWIG library file containing macros that can be used to manipulate simple
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* pointer objects.
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* ----------------------------------------------------------------------------- */
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/* -----------------------------------------------------------------------------
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* %pointer_class(type,name)
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*
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* Places a simple proxy around a simple type like 'int', 'float', or whatever.
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* The proxy provides this interface:
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*
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* class type {
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* public:
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* type();
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* ~type();
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* type value();
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* void assign(type value);
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* };
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*
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* Example:
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*
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* %pointer_class(int, intp);
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*
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* int add(int *x, int *y) { return *x + *y; }
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*
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* In python (with proxies)
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*
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* >>> a = intp()
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* >>> a.assign(10)
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* >>> a.value()
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* 10
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* >>> b = intp()
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* >>> b.assign(20)
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* >>> print add(a,b)
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* 30
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*
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* As a general rule, this macro should not be used on class/structures that
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* are already defined in the interface.
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* ----------------------------------------------------------------------------- */
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%define %pointer_class(TYPE, NAME)
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%{
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typedef TYPE NAME;
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%}
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typedef struct {
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} NAME;
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%extend NAME {
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#ifdef __cplusplus
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NAME() {
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return new TYPE();
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}
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~NAME() {
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if ($self) delete $self;
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}
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#else
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NAME() {
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return (TYPE *) calloc(1,sizeof(TYPE));
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}
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~NAME() {
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if ($self) free($self);
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}
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#endif
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}
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%extend NAME {
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void assign(TYPE value) {
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*$self = value;
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}
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TYPE value() {
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return *$self;
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}
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TYPE * cast() {
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return $self;
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}
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static NAME * frompointer(TYPE *t) {
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return (NAME *) t;
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}
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}
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%types(NAME = TYPE);
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%enddef
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/* -----------------------------------------------------------------------------
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* %pointer_functions(type,name)
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*
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* Create functions for allocating/deallocating pointers. This can be used
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* if you don't want to create a proxy class or if the pointer is complex.
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*
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* %pointer_functions(int, intp)
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*
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* int add(int *x, int *y) { return *x + *y; }
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*
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* In python (with proxies)
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*
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* >>> a = copy_intp(10)
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* >>> intp_value(a)
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* 10
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* >>> b = new_intp()
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* >>> intp_assign(b,20)
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* >>> print add(a,b)
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* 30
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* >>> delete_intp(a)
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* >>> delete_intp(b)
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*
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* ----------------------------------------------------------------------------- */
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%define %pointer_functions(TYPE,NAME)
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%{
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static TYPE *new_##NAME() { %}
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#ifdef __cplusplus
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%{ return new TYPE(); %}
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#else
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%{ return (TYPE *) calloc(1,sizeof(TYPE)); %}
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#endif
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%{}
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static TYPE *copy_##NAME(TYPE value) { %}
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#ifdef __cplusplus
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%{ return new TYPE(value); %}
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#else
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%{ TYPE *obj = (TYPE *) calloc(1,sizeof(TYPE));
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*obj = value;
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return obj; %}
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#endif
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%{}
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static void delete_##NAME(TYPE *obj) { %}
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#ifdef __cplusplus
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%{ if (obj) delete obj; %}
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#else
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%{ if (obj) free(obj); %}
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#endif
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%{}
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static void NAME ##_assign(TYPE *obj, TYPE value) {
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*obj = value;
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}
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static TYPE NAME ##_value(TYPE *obj) {
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return *obj;
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}
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%}
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TYPE *new_##NAME();
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TYPE *copy_##NAME(TYPE value);
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void delete_##NAME(TYPE *obj);
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void NAME##_assign(TYPE *obj, TYPE value);
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TYPE NAME##_value(TYPE *obj);
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%enddef
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/* -----------------------------------------------------------------------------
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* %pointer_cast(type1,type2,name)
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*
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* Generates a pointer casting function.
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* ----------------------------------------------------------------------------- */
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%define %pointer_cast(TYPE1,TYPE2,NAME)
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%inline %{
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TYPE2 NAME(TYPE1 x) {
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return (TYPE2) x;
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}
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%}
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%enddef
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