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/* -----------------------------------------------------------------------------
* std_string_view.i
*
* Typemaps for std::string_view and const std::string_view&
* These are mapped to a Java String and are passed around by value.
*
* To use non-const std::string_view references use the following %apply. Note
* that they are passed by value.
* %apply const std::string_view & {std::string_view &};
* ----------------------------------------------------------------------------- */
%{
#include <string_view>
#include <string>
%}
namespace std {
%naturalvar string_view;
class string_view;
// string_view
%typemap(jni) string_view "jstring"
%typemap(jtype) string_view "String"
%typemap(jstype) string_view "String"
%typemap(javadirectorin) string_view "$jniinput"
%typemap(javadirectorout) string_view "$javacall"
%typemap(in) string_view
%{ if(!$input) {
SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "null string");
return $null;
}
const char *$1_pstr = (const char *)jenv->GetStringUTFChars($input, 0);
if (!$1_pstr) return $null;
$1 = std::string_view($1_pstr); %}
/* std::string_view requires the string data to remain valid while the
* string_view is in use. */
%typemap(freearg) string_view
%{ jenv->ReleaseStringUTFChars($input, $1_pstr); %}
%typemap(directorout,warning=SWIGWARN_TYPEMAP_THREAD_UNSAFE_MSG) string_view
%{ if(!$input) {
if (!jenv->ExceptionCheck()) {
SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "null string");
}
return $null;
}
const char *$1_pstr = (const char *)jenv->GetStringUTFChars($input, 0);
if (!$1_pstr) return $null;
/* possible thread/reentrant code problem */
static std::string $1_str;
$1_str = $1_pstr;
$result = std::string_view($1_str);
jenv->ReleaseStringUTFChars($input, $1_pstr); %}
/* std::string_view::data() isn't zero-byte terminated, but NewStringUTF()
* requires a zero byte so it seems we have to make a copy (ick). The
* cleanest way to do that seems to be via a temporary std::string.
*/
%typemap(directorin,descriptor="Ljava/lang/String;") string_view
%{ $input = jenv->NewStringUTF(std::string($1).c_str());
Swig::LocalRefGuard $1_refguard(jenv, $input); %}
%typemap(out) string_view
%{ $result = jenv->NewStringUTF(std::string($1).c_str()); %}
%typemap(javain) string_view "$javainput"
%typemap(javaout) string_view {
return $jnicall;
}
%typemap(typecheck) string_view = char *;
%typemap(throws) string_view
%{ SWIG_JavaThrowException(jenv, SWIG_JavaRuntimeException, std::string($1).c_str());
return $null; %}
// const string_view &
%typemap(jni) const string_view & "jstring"
%typemap(jtype) const string_view & "String"
%typemap(jstype) const string_view & "String"
%typemap(javadirectorin) const string_view & "$jniinput"
%typemap(javadirectorout) const string_view & "$javacall"
%typemap(in) const string_view &
%{ if(!$input) {
SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "null string");
return $null;
}
const char *$1_pstr = (const char *)jenv->GetStringUTFChars($input, 0);
if (!$1_pstr) return $null;
$*1_ltype $1_str($1_pstr);
$1 = &$1_str; %}
/* std::string_view requires the string data to remain valid while the
* string_view is in use. */
%typemap(freearg) const string_view &
%{ jenv->ReleaseStringUTFChars($input, $1_pstr); %}
%typemap(directorout,warning=SWIGWARN_TYPEMAP_THREAD_UNSAFE_MSG) const string_view &
%{ if(!$input) {
SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "null string");
return $null;
}
const char *$1_pstr = (const char *)jenv->GetStringUTFChars($input, 0);
if (!$1_pstr) return $null;
/* possible thread/reentrant code problem */
static std::string $1_str;
$1_str = $1_pstr;
static $*1_ltype $1_strview;
$1_strview = $1_str;
$result = &$1_strview;
jenv->ReleaseStringUTFChars($input, $1_pstr); %}
%typemap(directorin,descriptor="Ljava/lang/String;") const string_view &
%{ $input = jenv->NewStringUTF(std::string($1).c_str());
Swig::LocalRefGuard $1_refguard(jenv, $input); %}
%typemap(out) const string_view &
%{ $result = jenv->NewStringUTF(std::string(*$1).c_str()); %}
%typemap(javain) const string_view & "$javainput"
%typemap(javaout) const string_view & {
return $jnicall;
}
%typemap(typecheck) const string_view & = char *;
%typemap(throws) const string_view &
%{ SWIG_JavaThrowException(jenv, SWIG_JavaRuntimeException, std::string($1).c_str());
return $null; %}
}
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