java4cpp/src/main/resources/cpp_getfield.cpp at java4cpp-1.5 · wshackle/java4cpp · GitHub

30 lines (30 loc) · 1.61 KB

//%%% Lines beginning with "//%%%" are template comments and removed from final output.

//%%% "%NAMESPACE%" will be replaced with namespace

//%%% "%HEADER%" will be replaced with header

//%%% "%HEADER_DEFINE%" will be replaced with defined value used to prevent multiple inclusion

//%%% "%CLASS_NAME%" will be replaced with className (not including package)

//%%% "%JNI_SIGNATURE% will be replaced with the JNI signature for the method.

//%%% "%METHOD_NAME% will be replaced with the actual methods arguments

//%%% "%METHOD_ARGS% will be replaced with the actual methods arguments

//%%% "%METHOD_ONFAIL% will be replaced with the code to execute on failure eg return -1

//%%% "%METHOD_CALL_TYPE% will be replaced with the type of Call<Type>Method needed.

//%%% "%METHOD_RETURN%" will be replaced with "return" or "" for void functions.

if(jthis == NULL) {

std::cerr << __FILE__ << ":" << __LINE__ <<" Call of method %METHOD_NAME% of %FULL_CLASS_NAME% with jthis == NULL." << std::endl;

%METHOD_ONFAIL%

}

JNIEnv *env =getEnv();

jclass cls = env->GetObjectClass(jthis);

if(GetDebugJ4Cpp()) DebugPrintJObject(__FILE__,__LINE__," %CLASS_NAME%::%METHOD_NAME% jthis=",jthis);

%RETURN_VAR_DECLARE%

if (cls != NULL) {

static jfieldID fid = env->GetFieldID(cls, "%FIELD_NAME%", "%JNI_SIGNATURE%");

if (NULL == fid) {

std::cerr << "Class %FULL_CLASS_NAME% has no field named %FIELD_NAME% with signature %JNI_SIGNATURE%." << std::endl;

%METHOD_ONFAIL%

} else {

%METHOD_RETURN_STORE% env->Get%METHOD_CALL_TYPE%Field( jthis, fid %METHOD_ARGS% );

}

releaseEnv(env);

%METHOD_RETURN_GET%

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