hackle.java4cpp.1.2.source-code.cpp_method.cpp Maven / Gradle / Ivy

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Utiliity to create C++ Wrapper for Java JAR library.

There is a newer version: 1.5

//%%% 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 CallMethod 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 jmethodID mid = env->GetMethodID(cls, "%JAVA_METHOD_NAME%", "%JNI_SIGNATURE%");
    if (NULL == mid) {
        DebugPrintJObject(__FILE__,__LINE__," %CLASS_NAME%::%METHOD_NAME% jthis=",jthis);
        std::cerr << __FILE__ << ":" << __LINE__ <<  " Class %FULL_CLASS_NAME% has no method named %JAVA_METHOD_NAME% with signature %JNI_SIGNATURE%." << std::endl;
        %METHOD_ONFAIL%
    } else {
        %METHOD_RETURN_STORE% env->Call%METHOD_CALL_TYPE%Method(jthis, mid %METHOD_ARGS% );
        jthrowable t = env->ExceptionOccurred();
        if(t != NULL) {
            if(GetDebugJ4Cpp()) {
                DebugPrintJObject(__FILE__,__LINE__," %CLASS_NAME%::%METHOD_NAME% jthrowable t=",t);
                env->ExceptionDescribe();
            }
//            env->ExceptionClear();
            throw t;
        }
    }
}
releaseEnv(env);
%METHOD_RETURN_GET%