Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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/* */
%insert("header") "swiglabels.swg"
%insert("header") "swigerrors.swg"
%insert("init") "swiginit.swg"
%insert("runtime") "swigrun.swg"
%insert("runtime") "rrun.swg"
%init %{
SWIGEXPORT void SWIG_init(void) {
%}
#define %Rruntime %insert("s")
#define SWIG_Object SEXP
#define VOID_Object R_NilValue
#define %append_output(obj) SET_VECTOR_ELT($result, $n, obj)
%define %set_constant(name, obj) %begin_block
SEXP _obj = obj;
assign(name, _obj);
%end_block %enddef
%define %raise(obj,type,desc)
return R_NilValue;
%enddef
%insert("sinit") "srun.swg"
%insert("sinitroutine") %{
SWIG_init();
SWIG_InitializeModule(0);
%}
%include <typemaps/swigmacros.swg>
%typemap(in) (double *x, int len) %{
$1 = REAL(x);
$2 = Rf_length(x);
%}
/* XXX
Need to worry about inheritance, e.g. if B extends A
and we are looking for an A[], then B elements are okay.
*/
%typemap(scheck) SWIGTYPE[ANY]
%{
# assert(length($input) > $1_dim0)
assert(all(sapply($input, class) == "$R_class"))
%}
%typemap(out) void "";
%typemap(in) int *, int[ANY] %{
$1 = INTEGER($input);
%}
%typemap(in) double *, double[ANY] %{
$1 = REAL($input);
%}
/* Shoul dwe recycle to make the length correct.
And warn if length() > the dimension.
*/
%typemap(scheck) SWIGTYPE [ANY] %{
# assert(length($input) >= $1_dim0)
%}
/* Handling vector case to avoid warnings,
although we just use the first one. */
%typemap(scheck) unsigned int %{
assert(length($input) == 1 && $input >= 0, "All values must be non-negative")
%}
%typemap(scheck) int %{
if(length($input) > 1) {
Rf_warning("using only the first element of $input")
}
%}
%include <typemaps/swigmacros.swg>
%include <typemaps/fragments.swg>
%include <rfragments.swg>
%include <ropers.swg>
%include <typemaps/swigtypemaps.swg>
%include <rtype.swg>
%apply int[ANY] { enum SWIGTYPE[ANY] };
%typemap(in,noblock=1) enum SWIGTYPE[ANY] {
$1 = %reinterpret_cast(INTEGER($input), $1_ltype);
}
%typemap(in,noblock=1,fragment="SWIG_strdup") char* {
$1 = %reinterpret_cast(SWIG_strdup(CHAR(STRING_ELT($input, 0))), $1_ltype);
}
%typemap(freearg,noblock=1) char* {
free($1);
}
%typemap(in,noblock=1,fragment="SWIG_strdup") char *[ANY] {
$1 = %reinterpret_cast(SWIG_strdup(CHAR(STRING_ELT($input, 0))), $1_ltype);
}
%typemap(freearg,noblock=1) char *[ANY] {
free($1);
}
%typemap(in,noblock=1,fragment="SWIG_strdup") char[ANY] {
$1 = SWIG_strdup(CHAR(STRING_ELT($input, 0)));
}
%typemap(freearg,noblock=1) char[ANY] {
free($1);
}
%typemap(in,noblock=1,fragment="SWIG_strdup") char[] {
$1 = SWIG_strdup(CHAR(STRING_ELT($input, 0)));
}
%typemap(freearg,noblock=1) char[] {
free($1);
}
%typemap(memberin) char[] %{
if ($input) strcpy($1, $input);
else
strcpy($1, "");
%}
%typemap(globalin) char[] %{
if ($input) strcpy($1, $input);
else
strcpy($1, "");
%}
%typemap(out,noblock=1) char*
{ $result = $1 ? Rf_mkString(%reinterpret_cast($1,char *)) : R_NilValue; }
%typemap(in,noblock=1) char {
$1 = %static_cast(CHAR(STRING_ELT($input, 0))[0],$1_ltype);
}
%typemap(out) char
{
char tmp[2] = "x";
tmp[0] = $1;
$result = Rf_mkString(tmp);
}
%typemap(in,noblock=1) int {
$1 = %static_cast(INTEGER($input)[0], $1_ltype);
}
%typemap(out,noblock=1) int
"$result = Rf_ScalarInteger($1);";
%typemap(in,noblock=1) bool
"$1 = LOGICAL($input)[0] ? true : false;";
%typemap(out,noblock=1) bool
"$result = Rf_ScalarLogical($1);";
%typemap(in,noblock=1) unsigned int,
unsigned long,
float,
double,
long
{
$1 = %static_cast(REAL($input)[0], $1_ltype);
}
%typemap(out,noblock=1) unsigned int *
"$result = ScalarReal(*($1));";
%Rruntime %{
setMethod('[', "ExternalReference",
function(x,i,j, ..., drop=TRUE)
if (!is.null(x$"__getitem__"))
sapply(i, function(n) x$"__getitem__"(i=as.integer(n-1))))
setMethod('[<-' , "ExternalReference",
function(x,i,j, ..., value)
if (!is.null(x$"__setitem__")) {
sapply(1:length(i), function(n)
x$"__setitem__"(i=as.integer(i[n]-1), x=value[n]))
x
})
setAs('ExternalReference', 'character',
function(from) {if (!is.null(from$"__str__")) from$"__str__"()})
setMethod('print', 'ExternalReference',
function(x) {print(as(x, "character"))})
%}