Examples with ByRef org.bytedeco.javacpp.annotation.ByRef used on opensource projects

Example 6 with ByRef

use of org.bytedeco.javacpp.annotation.ByRef in project javacpp by bytedeco.

the class Generator method call.

void call(MethodInformation methodInfo, String returnPrefix, boolean secondCall) {
    boolean needSecondCall = false;
    String indent = secondCall ? "" : methodInfo.throwsException != null ? "        " : "    ";
    String prefix = "(";
    String suffix = ")";
    int skipParameters = methodInfo.parameterTypes.length > 0 && methodInfo.parameterTypes[0] == Class.class ? 1 : 0;
    Index index = methodInfo.method.getAnnotation(Index.class);
    if (index == null && methodInfo.pairedMethod != null) {
        index = methodInfo.pairedMethod.getAnnotation(Index.class);
    }
    if (methodInfo.deallocator) {
        out.println(indent + "void* allocatedAddress = jlong_to_ptr(arg0);");
        out.println(indent + "void (*deallocatorAddress)(void*) = (void(*)(void*))jlong_to_ptr(arg1);");
        out.println(indent + "if (deallocatorAddress != NULL && allocatedAddress != NULL) {");
        out.println(indent + "    (*deallocatorAddress)(allocatedAddress);");
        out.println(indent + "}");
        // nothing else should be appended here for deallocator
        return;
    } else if (!FunctionPointer.class.isAssignableFrom(methodInfo.cls) && (methodInfo.valueGetter || methodInfo.valueSetter || methodInfo.memberGetter || methodInfo.memberSetter)) {
        boolean wantsPointer = false;
        int k = methodInfo.parameterTypes.length - 1;
        if ((methodInfo.valueSetter || methodInfo.memberSetter) && !(by(methodInfo, k) instanceof ByRef) && adapterInformation(false, methodInfo, k) == null && methodInfo.parameterTypes[k] == String.class) {
            // special considerations for char arrays as strings
            out.print(indent + "strcpy((char*)");
            wantsPointer = true;
            prefix = ", ";
        } else if (k >= 1 && methodInfo.parameterTypes[0].isArray() && methodInfo.parameterTypes[0].getComponentType().isPrimitive() && (methodInfo.parameterTypes[1] == int.class || methodInfo.parameterTypes[1] == long.class)) {
            // special considerations for primitive arrays
            out.print(indent + "memcpy(");
            wantsPointer = true;
            prefix = ", ";
            if (methodInfo.memberGetter || methodInfo.valueGetter) {
                out.print("ptr0 + arg1, ");
            } else {
                // methodInfo.memberSetter || methodInfo.valueSetter
                prefix += "ptr0 + arg1, ";
            }
            skipParameters = 2;
            suffix = " * sizeof(*ptr0)" + suffix;
        } else {
            out.print(indent + returnPrefix);
            prefix = methodInfo.valueGetter || methodInfo.memberGetter ? "" : " = ";
            suffix = "";
        }
        if (Modifier.isStatic(methodInfo.modifiers) || !Pointer.class.isAssignableFrom(methodInfo.cls)) {
            out.print(cppScopeName(methodInfo));
        } else if (methodInfo.memberGetter || methodInfo.memberSetter) {
            if (index != null) {
                out.print("(*ptr)");
                prefix = "." + methodInfo.memberName[0] + prefix;
            } else {
                out.print("ptr->" + methodInfo.memberName[0]);
            }
        } else {
            // methodInfo.valueGetter || methodInfo.valueSetter
            String cast = cast(methodInfo.returnType, methodInfo.annotations);
            if (index == null && cast.length() > 0) {
                // make sure to cast the returned pointer and not the value
                out.print("*(" + cast.substring(1, cast.length() - 1) + "*)&");
            }
            out.print(index != null ? "(*ptr)" : methodInfo.dim > 0 || wantsPointer ? "ptr" : "*ptr");
        }
    } else if (methodInfo.bufferGetter) {
        out.print(indent + returnPrefix + "ptr");
        prefix = "";
        suffix = "";
    } else {
        // function call
        out.print(indent + returnPrefix);
        if (FunctionPointer.class.isAssignableFrom(methodInfo.cls)) {
            if (methodInfo.cls.isAnnotationPresent(Namespace.class)) {
                out.print("(ptr0->*(ptr->ptr))");
                skipParameters = 1;
                if (methodInfo.valueGetter || methodInfo.valueSetter) {
                    // this is get/put for a field pointer, not a real function
                    prefix = methodInfo.valueGetter ? "" : " = ";
                    suffix = "";
                }
            } else {
                if (methodInfo.valueGetter || methodInfo.valueSetter) {
                    out.print("ptr->ptr");
                    prefix = methodInfo.valueGetter ? "" : " = ";
                    suffix = "";
                } else {
                    out.print("(*ptr->ptr)");
                }
            }
        } else if (methodInfo.allocator) {
            String[] typeName = cppTypeName(methodInfo.cls);
            String valueTypeName = valueTypeName(typeName);
            if (virtualFunctions.containsKey(methodInfo.cls)) {
                String subType = "JavaCPP_" + mangle(valueTypeName);
                valueTypeName = subType;
            }
            if (methodInfo.cls == Pointer.class) {
                // can't allocate a "void", so simply assign the argument instead
                prefix = "";
                suffix = "";
            } else {
                out.print((noException(methodInfo.cls, methodInfo.method) ? "new (std::nothrow) " : "new ") + valueTypeName + typeName[1]);
                if (methodInfo.arrayAllocator) {
                    prefix = "[";
                    suffix = "]";
                }
            }
        } else if (Modifier.isStatic(methodInfo.modifiers) || !Pointer.class.isAssignableFrom(methodInfo.cls)) {
            out.print(cppScopeName(methodInfo));
        } else {
            String name = methodInfo.memberName[0];
            String[] typeName = cppTypeName(methodInfo.cls);
            String valueTypeName = valueTypeName(typeName);
            if (virtualFunctions.containsKey(methodInfo.cls) && !secondCall) {
                String subType = "JavaCPP_" + mangle(valueTypeName);
                if (Modifier.isPublic(methodInfo.method.getModifiers())) {
                    // non-protected method that could be from any subclass, so check for ours
                    out.print("(dynamic_cast<" + subType + "*>(ptr) != NULL ? ");
                    needSecondCall = true;
                }
                if (methodInfo.method.isAnnotationPresent(Virtual.class)) {
                    name = "super_" + name;
                }
                out.print("((" + subType + "*)ptr)->" + name);
            } else if (index != null) {
                out.print("(*ptr)");
                prefix = "." + name + prefix;
            } else {
                String op = name.startsWith("operator") ? name.substring(8).trim() : "";
                if (methodInfo.parameterTypes.length > 0 && (op.equals("=") || op.equals("+") || op.equals("-") || op.equals("*") || op.equals("/") || op.equals("%") || op.equals("==") || op.equals("!=") || op.equals("<") || op.equals(">") || op.equals("<=") || op.equals(">="))) {
                    out.print("((*ptr)");
                    prefix = op + prefix;
                    suffix += ")";
                } else {
                    out.print("ptr->" + name);
                }
            }
        }
    }
    for (int j = skipParameters; j <= methodInfo.parameterTypes.length; j++) {
        if (j == skipParameters + methodInfo.dim) {
            if (methodInfo.memberName.length > 1) {
                out.print(methodInfo.memberName[1]);
            }
            out.print(prefix);
            if (methodInfo.withEnv) {
                out.print(Modifier.isStatic(methodInfo.modifiers) ? "env, cls" : "env, obj");
                if (methodInfo.parameterTypes.length - skipParameters - methodInfo.dim > 0) {
                    out.print(", ");
                }
            }
        }
        if (j == methodInfo.parameterTypes.length) {
            break;
        }
        if (j < skipParameters + methodInfo.dim) {
            // the C++ operator does with them when the Index annotation is present
            if (index == null || index.function().length() == 0) {
                out.print("[");
            } else {
                out.print("." + index.function() + "(");
            }
        }
        Annotation passBy = by(methodInfo, j);
        String cast = cast(methodInfo, j);
        AdapterInformation adapterInfo = methodInfo.parameterRaw[j] ? null : adapterInformation(false, methodInfo, j);
        if (FunctionPointer.class.isAssignableFrom(methodInfo.cls) && !methodInfo.cls.isAnnotationPresent(Namespace.class) && methodInfo.valueSetter) {
            String[] typeName = cppTypeName(methodInfo.cls);
            cast = "(" + typeName[0] + typeName[1] + ")";
        }
        if (Enum.class.isAssignableFrom(methodInfo.parameterTypes[j])) {
            accessesEnums = true;
            out.print(cast + "val" + j);
        } else if (("(void*)".equals(cast) || "(void *)".equals(cast)) && methodInfo.parameterTypes[j] == long.class) {
            out.print("jlong_to_ptr(arg" + j + ")");
        } else if (methodInfo.parameterTypes[j].isPrimitive()) {
            out.print(cast + "arg" + j);
        } else if (adapterInfo != null) {
            cast = adapterInfo.cast.trim();
            if (cast.length() > 0 && !cast.startsWith("(") && !cast.endsWith(")")) {
                cast = "(" + cast + ")";
            }
            String cast2 = adapterInfo.cast2.trim();
            if (cast2.length() > 0 && !cast2.startsWith("(") && !cast2.endsWith(")")) {
                cast2 = "(" + cast2 + ")";
            }
            out.print(cast + cast2 + "adapter" + j);
            j += adapterInfo.argc - 1;
        } else if (FunctionPointer.class.isAssignableFrom(methodInfo.parameterTypes[j]) && !(passBy instanceof ByVal || passBy instanceof ByRef)) {
            if (passBy instanceof ByPtrRef) {
                out.print(cast + "(ptr" + j + "->ptr)");
            } else {
                out.print(cast + "(ptr" + j + " == NULL ? NULL : " + (passBy instanceof ByPtrPtr ? "&ptr" : "ptr") + j + "->ptr)");
            }
        } else if (passBy instanceof ByVal || (passBy instanceof ByRef && methodInfo.parameterTypes[j] != String.class)) {
            String nullValue = passBy instanceof ByVal ? ((ByVal) passBy).nullValue() : passBy instanceof ByRef ? ((ByRef) passBy).nullValue() : "";
            out.print((nullValue.length() > 0 ? "ptr" + j + " == NULL ? " + nullValue + " : " : "") + "*" + cast + "ptr" + j);
        } else if (passBy instanceof ByPtrPtr) {
            out.print(cast + "(arg" + j + " == NULL ? NULL : &ptr" + j + ")");
        } else {
            // ByPtr || ByPtrRef || (ByRef && std::string)
            out.print(cast + "ptr" + j);
        }
        if (j < skipParameters + methodInfo.dim) {
            if (index == null || index.function().length() == 0) {
                out.print("]");
            } else {
                out.print(")");
            }
        } else if (j < methodInfo.parameterTypes.length - 1) {
            out.print(", ");
        }
    }
    out.print(suffix);
    if (methodInfo.memberName.length > 2) {
        out.print(methodInfo.memberName[2]);
    }
    if (by(methodInfo.annotations) instanceof ByRef && methodInfo.returnType == String.class) {
        // special considerations for std::string
        out.print(");\n" + indent + "rptr = rstr.c_str()");
    }
    if (needSecondCall) {
        call(methodInfo, " : ", true);
        out.print(")");
    }
}

Example 7 with ByRef

use of org.bytedeco.javacpp.annotation.ByRef in project javacpp by bytedeco.

the class Generator method cppAnnotationTypeName.

String[] cppAnnotationTypeName(Class<?> type, Annotation... annotations) {
    String[] typeName = cppCastTypeName(type, annotations);
    String prefix = typeName[0];
    String suffix = typeName[1];
    boolean casted = false;
    for (Annotation a : annotations) {
        if ((a instanceof Cast && ((Cast) a).value()[0].length() > 0) || a instanceof Const) {
            casted = true;
            break;
        }
    }
    Annotation by = by(annotations);
    if (by instanceof ByVal) {
        prefix = constValueTypeName(typeName);
    } else if (by instanceof ByRef) {
        prefix = constValueTypeName(typeName) + "&";
    } else if (by instanceof ByPtrPtr && !casted) {
        prefix = prefix + "*";
    } else if (by instanceof ByPtrRef) {
        prefix = prefix + "&";
    }
    // else ByPtr
    typeName[0] = prefix;
    typeName[1] = suffix;
    return typeName;
}

Example 8 with ByRef

use of org.bytedeco.javacpp.annotation.ByRef in project javacpp by bytedeco.

the class Generator method returnBefore.

String returnBefore(MethodInformation methodInfo) {
    String returnPrefix = "";
    if (methodInfo.returnType == void.class) {
        if (methodInfo.allocator || methodInfo.arrayAllocator) {
            // makes sure to index all POD structs
            jclasses.index(methodInfo.cls);
            String[] typeName = cppTypeName(methodInfo.cls);
            returnPrefix = typeName[0] + " rptr" + typeName[1] + " = ";
        }
    } else {
        String cast = cast(methodInfo.returnType, methodInfo.annotations);
        String[] typeName = methodInfo.returnRaw ? new String[] { "" } : cppCastTypeName(methodInfo.returnType, methodInfo.annotations);
        if (FunctionPointer.class.isAssignableFrom(methodInfo.cls) && !methodInfo.cls.isAnnotationPresent(Namespace.class) && methodInfo.valueGetter) {
            typeName = cppTypeName(methodInfo.cls);
        }
        if (methodInfo.valueSetter || methodInfo.memberSetter || methodInfo.noReturnGetter) {
            out.println("    jobject rarg = obj;");
        } else if (methodInfo.returnType.isPrimitive()) {
            out.println("    " + jniTypeName(methodInfo.returnType) + " rarg = 0;");
            returnPrefix = typeName[0] + " rval" + typeName[1] + " = " + cast;
        } else if (Enum.class.isAssignableFrom(methodInfo.returnType)) {
            accessesEnums = true;
            out.println("    jobject rarg = JavaCPP_createPointer(env, " + jclasses.index(methodInfo.returnType) + ");");
            returnPrefix = typeName[0] + " rval" + typeName[1] + " = " + cast;
        } else {
            Annotation returnBy = by(methodInfo.annotations);
            String valueTypeName = valueTypeName(typeName);
            returnPrefix = "rptr = " + cast;
            if (typeName[0].length() == 0 || methodInfo.returnRaw) {
                methodInfo.returnRaw = true;
                typeName[0] = jniTypeName(methodInfo.returnType);
                out.println("    " + typeName[0] + " rarg = NULL;");
                out.println("    " + typeName[0] + " rptr;");
            } else if (Pointer.class.isAssignableFrom(methodInfo.returnType) || Buffer.class.isAssignableFrom(methodInfo.returnType) || (methodInfo.returnType.isArray() && methodInfo.returnType.getComponentType().isPrimitive())) {
                if (FunctionPointer.class.isAssignableFrom(methodInfo.returnType)) {
                    functions.index(methodInfo.returnType);
                    returnPrefix = "if (rptr != NULL) rptr->ptr = ";
                    if (methodInfo.method.isAnnotationPresent(Virtual.class)) {
                        // cast from member function pointers declared in Java
                        returnPrefix += "(" + typeName[0] + typeName[1] + ")&";
                    }
                    typeName[0] = functionClassName(methodInfo.returnType) + "*";
                    typeName[1] = "";
                    valueTypeName = valueTypeName(typeName);
                }
                if (returnBy instanceof ByVal) {
                    returnPrefix += (noException(methodInfo.returnType, methodInfo.method) ? "new (std::nothrow) " : "new ") + valueTypeName + typeName[1] + "(";
                } else if (returnBy instanceof ByRef) {
                    returnPrefix += "&";
                } else if (returnBy instanceof ByPtrPtr) {
                    if (cast.length() > 0) {
                        typeName[0] = typeName[0].substring(0, typeName[0].length() - 1);
                    }
                    returnPrefix = "rptr = NULL; " + typeName[0] + "* rptrptr" + typeName[1] + " = " + cast;
                }
                // else ByPtr || ByPtrRef
                if (methodInfo.bufferGetter) {
                    out.println("    jobject rarg = NULL;");
                    out.println("    char* rptr;");
                } else {
                    out.println("    " + jniTypeName(methodInfo.returnType) + " rarg = NULL;");
                    out.println("    " + typeName[0] + " rptr" + typeName[1] + ";");
                }
                if (FunctionPointer.class.isAssignableFrom(methodInfo.returnType)) {
                    out.println("    rptr = new (std::nothrow) " + valueTypeName + ";");
                }
            } else if (methodInfo.returnType == String.class) {
                out.println("    jstring rarg = NULL;");
                out.println("    const char* rptr;");
                if (returnBy instanceof ByRef) {
                    returnPrefix = "std::string rstr(";
                } else if (returnBy instanceof ByPtrPtr) {
                    returnPrefix = "rptr = NULL; const char** rptrptr = (const char**)";
                } else {
                    returnPrefix += "(const char*)";
                }
            } else {
                logger.warn("Method \"" + methodInfo.method + "\" has unsupported return type \"" + methodInfo.returnType.getCanonicalName() + "\". Compilation will most likely fail.");
            }
            AdapterInformation adapterInfo = adapterInformation(false, valueTypeName, methodInfo.annotations);
            if (adapterInfo != null) {
                usesAdapters = true;
                returnPrefix = adapterInfo.name + " radapter(";
            }
        }
    }
    if (methodInfo.throwsException != null) {
        out.println("    jthrowable exc = NULL;");
        out.println("    try {");
    }
    return returnPrefix;
}

Example 9 with ByRef

use of org.bytedeco.javacpp.annotation.ByRef in project javacpp by bytedeco.

the class Generator method callback.

void callback(Class<?> cls, Method callbackMethod, String callbackName, boolean needDefinition, MethodInformation methodInfo) {
    Class<?> callbackReturnType = callbackMethod.getReturnType();
    Class<?>[] callbackParameterTypes = callbackMethod.getParameterTypes();
    Annotation[] callbackAnnotations = callbackMethod.getAnnotations();
    Annotation[][] callbackParameterAnnotations = callbackMethod.getParameterAnnotations();
    String instanceTypeName = functionClassName(cls);
    String[] callbackTypeName = cppFunctionTypeName(callbackMethod);
    String[] returnConvention = callbackTypeName[0].split("\\(");
    returnConvention[1] = constValueTypeName(returnConvention[1]);
    String parameterDeclaration = callbackTypeName[1].substring(1);
    String fieldName = mangle(callbackMethod.getName()) + "__" + mangle(signature(callbackMethod.getParameterTypes()));
    String firstLine = "";
    if (methodInfo != null) {
        // stuff from a virtualized class
        String nonconstParamDeclaration = parameterDeclaration.endsWith(" const") ? parameterDeclaration.substring(0, parameterDeclaration.length() - 6) : parameterDeclaration;
        String[] typeName = methodInfo.returnRaw ? new String[] { "" } : cppTypeName(methodInfo.cls);
        String valueTypeName = valueTypeName(typeName);
        String subType = "JavaCPP_" + mangle(valueTypeName);
        Set<String> memberList = virtualMembers.get(cls);
        if (memberList == null) {
            virtualMembers.put(cls, memberList = new LinkedHashSet<String>());
        }
        String member = "    ";
        if (methodInfo.arrayAllocator) {
            return;
        } else if (methodInfo.allocator) {
            member += subType + nonconstParamDeclaration + " : " + valueTypeName + "(";
            for (int j = 0; j < callbackParameterTypes.length; j++) {
                member += "arg" + j;
                if (j < callbackParameterTypes.length - 1) {
                    member += ", ";
                }
            }
            member += "), obj(NULL) { }";
        } else {
            Set<String> functionList = virtualFunctions.get(cls);
            if (functionList == null) {
                virtualFunctions.put(cls, functionList = new LinkedHashSet<String>());
            }
            String usingLine = "using " + valueTypeName + "::" + methodInfo.memberName[0] + ";";
            boolean needUsing = true;
            for (String s : memberList) {
                if (s.split("\n", 2)[0].equals(member + usingLine)) {
                    needUsing = false;
                    break;
                }
            }
            if (needUsing) {
                member += usingLine + "\n    ";
            }
            member += "virtual " + returnConvention[0] + (returnConvention.length > 1 ? returnConvention[1] : "") + methodInfo.memberName[0] + parameterDeclaration + ";\n    " + returnConvention[0] + "super_" + methodInfo.memberName[0] + nonconstParamDeclaration + " { ";
            if (methodInfo.method.getAnnotation(Virtual.class).value()) {
                member += "throw JavaCPP_exception(\"Cannot call a pure virtual function.\"); }";
            } else {
                member += (callbackReturnType != void.class ? "return " : "") + valueTypeName + "::" + methodInfo.memberName[0] + "(";
                for (int j = 0; j < callbackParameterTypes.length; j++) {
                    member += "arg" + j;
                    if (j < callbackParameterTypes.length - 1) {
                        member += ", ";
                    }
                }
                member += "); }";
            }
            firstLine = returnConvention[0] + (returnConvention.length > 1 ? returnConvention[1] : "") + subType + "::" + methodInfo.memberName[0] + parameterDeclaration + " {";
            functionList.add(fieldName);
        }
        memberList.add(member);
    } else if (callbackName != null) {
        callbacks.index("static " + instanceTypeName + " " + callbackName + "_instance;");
        Convention convention = cls.getAnnotation(Convention.class);
        if (convention != null && !convention.extern().equals("C")) {
            out.println("extern \"" + convention.extern() + "\" {");
            if (out2 != null) {
                out2.println("extern \"" + convention.extern() + "\" {");
            }
        }
        if (out2 != null) {
            out2.println("JNIIMPORT " + returnConvention[0] + (returnConvention.length > 1 ? returnConvention[1] : "") + callbackName + parameterDeclaration + ";");
        }
        out.println("JNIEXPORT " + returnConvention[0] + (returnConvention.length > 1 ? returnConvention[1] : "") + callbackName + parameterDeclaration + " {");
        out.print((callbackReturnType != void.class ? "    return " : "    ") + callbackName + "_instance(");
        for (int j = 0; j < callbackParameterTypes.length; j++) {
            out.print("arg" + j);
            if (j < callbackParameterTypes.length - 1) {
                out.print(", ");
            }
        }
        out.println(");");
        out.println("}");
        if (convention != null && !convention.extern().equals("C")) {
            out.println("}");
            if (out2 != null) {
                out2.println("}");
            }
        }
        firstLine = returnConvention[0] + instanceTypeName + "::operator()" + parameterDeclaration + " {";
    }
    if (!needDefinition) {
        return;
    }
    out.println(firstLine);
    String returnPrefix = "";
    if (callbackReturnType != void.class) {
        out.println("    " + jniTypeName(callbackReturnType) + " rarg = 0;");
        returnPrefix = "rarg = ";
        if (callbackReturnType == String.class) {
            returnPrefix += "(jstring)";
        }
    }
    String callbackReturnCast = cast(callbackReturnType, callbackAnnotations);
    Annotation returnBy = by(callbackAnnotations);
    String[] returnTypeName = cppTypeName(callbackReturnType);
    String returnValueTypeName = valueTypeName(returnTypeName);
    AdapterInformation returnAdapterInfo = adapterInformation(false, returnValueTypeName, callbackAnnotations);
    out.println("    jthrowable exc = NULL;");
    out.println("    JNIEnv* env;");
    out.println("    bool attached = JavaCPP_getEnv(&env);");
    out.println("    if (env == NULL) {");
    out.println("        goto end;");
    out.println("    }");
    out.println("{");
    if (callbackParameterTypes.length > 0) {
        out.println("    jvalue args[" + callbackParameterTypes.length + "];");
        for (int j = 0; j < callbackParameterTypes.length; j++) {
            if (callbackParameterTypes[j].isPrimitive()) {
                out.println("    args[" + j + "]." + signature(callbackParameterTypes[j]).toLowerCase() + " = (" + jniTypeName(callbackParameterTypes[j]) + ")arg" + j + ";");
            } else if (Enum.class.isAssignableFrom(callbackParameterTypes[j])) {
                accessesEnums = true;
                String s = enumValueType(callbackParameterTypes[j]);
                if (s != null) {
                    String S = Character.toUpperCase(s.charAt(0)) + s.substring(1);
                    out.println("    jobject obj" + j + " = JavaCPP_createPointer(env, " + jclasses.index(callbackParameterTypes[j]) + ");");
                    out.println("    args[" + j + "].l = obj" + j + ";");
                    out.println("    if (obj" + j + " != NULL) {");
                    out.println("        env->Set" + S + "Field(obj" + j + ", JavaCPP_" + s + "ValueFID, (j" + s + ")arg" + j + ");");
                    out.println("    }");
                }
            } else {
                Annotation passBy = by(callbackParameterAnnotations[j]);
                String[] typeName = cppTypeName(callbackParameterTypes[j]);
                String valueTypeName = valueTypeName(typeName);
                AdapterInformation adapterInfo = adapterInformation(false, valueTypeName, callbackParameterAnnotations[j]);
                if (adapterInfo != null) {
                    usesAdapters = true;
                    out.println("    " + adapterInfo.name + " adapter" + j + "(arg" + j + ");");
                }
                if (Pointer.class.isAssignableFrom(callbackParameterTypes[j]) || Buffer.class.isAssignableFrom(callbackParameterTypes[j]) || (callbackParameterTypes[j].isArray() && callbackParameterTypes[j].getComponentType().isPrimitive())) {
                    String cast = "(" + typeName[0] + typeName[1] + ")";
                    if (FunctionPointer.class.isAssignableFrom(callbackParameterTypes[j])) {
                        functions.index(callbackParameterTypes[j]);
                        typeName[0] = functionClassName(callbackParameterTypes[j]) + "*";
                        typeName[1] = "";
                        valueTypeName = valueTypeName(typeName);
                    } else if (virtualFunctions.containsKey(callbackParameterTypes[j])) {
                        String subType = "JavaCPP_" + mangle(valueTypeName);
                        valueTypeName = subType;
                    }
                    out.println("    " + jniTypeName(callbackParameterTypes[j]) + " obj" + j + " = NULL;");
                    out.println("    " + typeName[0] + " ptr" + j + typeName[1] + " = NULL;");
                    if (FunctionPointer.class.isAssignableFrom(callbackParameterTypes[j])) {
                        out.println("    ptr" + j + " = new (std::nothrow) " + valueTypeName + ";");
                        out.println("    if (ptr" + j + " != NULL) {");
                        out.println("        ptr" + j + "->ptr = " + cast + "&arg" + j + ";");
                        out.println("    }");
                    } else if (adapterInfo != null) {
                        out.println("    ptr" + j + " = adapter" + j + ";");
                    } else if (passBy instanceof ByVal && callbackParameterTypes[j] != Pointer.class) {
                        out.println("    ptr" + j + (noException(callbackParameterTypes[j], callbackMethod) ? " = new (std::nothrow) " : " = new ") + valueTypeName + typeName[1] + "(*" + cast + "&arg" + j + ");");
                    } else if (passBy instanceof ByVal || passBy instanceof ByRef) {
                        out.println("    ptr" + j + " = " + cast + "&arg" + j + ";");
                    } else if (passBy instanceof ByPtrPtr) {
                        out.println("    if (arg" + j + " == NULL) {");
                        out.println("        JavaCPP_log(\"Pointer address of argument " + j + " is NULL in callback for " + cls.getCanonicalName() + ".\");");
                        out.println("    } else {");
                        out.println("        ptr" + j + " = " + cast + "*arg" + j + ";");
                        out.println("    }");
                    } else {
                        // ByPtr || ByPtrRef
                        out.println("    ptr" + j + " = " + cast + "arg" + j + ";");
                    }
                }
                boolean needInit = false;
                if (adapterInfo != null) {
                    if (callbackParameterTypes[j] != String.class) {
                        out.println("    jlong size" + j + " = (jlong)adapter" + j + ".size;");
                        out.println("    void* owner" + j + " = adapter" + j + ".owner;");
                        out.println("    void (*deallocator" + j + ")(void*) = &" + adapterInfo.name + "::deallocate;");
                    }
                    needInit = true;
                } else if ((passBy instanceof ByVal && callbackParameterTypes[j] != Pointer.class) || FunctionPointer.class.isAssignableFrom(callbackParameterTypes[j])) {
                    out.println("    jlong size" + j + " = 1;");
                    out.println("    void* owner" + j + " = ptr" + j + ";");
                    out.println("    void (*deallocator" + j + ")(void*) = &JavaCPP_" + mangle(callbackParameterTypes[j].getName()) + "_deallocate;");
                    deallocators.index(callbackParameterTypes[j]);
                    needInit = true;
                }
                if (Pointer.class.isAssignableFrom(callbackParameterTypes[j])) {
                    String s = "    obj" + j + " = JavaCPP_createPointer(env, " + jclasses.index(callbackParameterTypes[j]) + ");";
                    adapterInfo = adapterInformation(true, valueTypeName, callbackParameterAnnotations[j]);
                    if (adapterInfo != null || passBy instanceof ByPtrPtr || passBy instanceof ByPtrRef) {
                        out.println(s);
                    } else {
                        out.println("    if (ptr" + j + " != NULL) { ");
                        out.println("    " + s);
                        out.println("    }");
                    }
                    out.println("    if (obj" + j + " != NULL) { ");
                    if (needInit) {
                        out.println("        JavaCPP_initPointer(env, obj" + j + ", ptr" + j + ", size" + j + ", owner" + j + ", deallocator" + j + ");");
                    } else {
                        out.println("        env->SetLongField(obj" + j + ", JavaCPP_addressFID, ptr_to_jlong(ptr" + j + "));");
                    }
                    out.println("    }");
                    out.println("    args[" + j + "].l = obj" + j + ";");
                } else if (callbackParameterTypes[j] == String.class) {
                    passesStrings = true;
                    out.println("    jstring obj" + j + " = JavaCPP_createString(env, (const char*)" + (adapterInfo != null ? "adapter" : "arg") + j + ");");
                    out.println("    args[" + j + "].l = obj" + j + ";");
                } else if (callbackParameterTypes[j].isArray() && callbackParameterTypes[j].getComponentType().isPrimitive()) {
                    if (adapterInfo == null) {
                        out.println("    jlong size" + j + " = ptr" + j + " != NULL ? 1 : 0;");
                    }
                    String componentType = callbackParameterTypes[j].getComponentType().getName();
                    String S = Character.toUpperCase(componentType.charAt(0)) + componentType.substring(1);
                    out.println("    if (ptr" + j + " != NULL) {");
                    out.println("        obj" + j + " = env->New" + S + "Array(size" + j + " < INT_MAX ? size" + j + " : INT_MAX);");
                    out.println("        env->Set" + S + "ArrayRegion(obj" + j + ", 0, size" + j + " < INT_MAX ? size" + j + " : INT_MAX, (j" + componentType + "*)ptr" + j + ");");
                    out.println("    }");
                    if (adapterInfo != null) {
                        out.println("    if (deallocator" + j + " != 0 && ptr" + j + " != NULL) {");
                        out.println("        (*(void(*)(void*))jlong_to_ptr(deallocator" + j + "))((void*)ptr" + j + ");");
                        out.println("    }");
                    }
                } else if (Buffer.class.isAssignableFrom(callbackParameterTypes[j])) {
                    if (adapterInfo == null) {
                        out.println("    jlong size" + j + " = ptr" + j + " != NULL ? 1 : 0;");
                    }
                    out.println("    if (ptr" + j + " != NULL) {");
                    out.println("        jlong sizeptr = size" + j + " * sizeof(ptr" + j + "[0]);");
                    out.println("        obj" + j + " = env->NewDirectByteBuffer((void*)ptr" + j + ", sizeptr < INT_MAX ? sizeptr : INT_MAX);");
                    out.println("    }");
                } else {
                    logger.warn("Callback \"" + callbackMethod + "\" has unsupported parameter type \"" + callbackParameterTypes[j].getCanonicalName() + "\". Compilation will most likely fail.");
                }
            }
        }
    }
    if (methodInfo != null) {
        out.println("    if (" + fieldName + " == NULL) {");
        out.println("        " + fieldName + " = JavaCPP_getMethodID(env, " + jclasses.index(cls) + ", \"" + methodInfo.method.getName() + "\", \"(" + signature(methodInfo.method.getParameterTypes()) + ")" + signature(methodInfo.method.getReturnType()) + "\");");
        out.println("    }");
        out.println("    jmethodID mid = " + fieldName + ";");
    } else if (callbackName != null) {
        out.println("    if (obj == NULL) {");
        out.println("        obj = JavaCPP_createPointer(env, " + jclasses.index(cls) + ");");
        out.println("        obj = obj == NULL ? NULL : env->NewGlobalRef(obj);");
        out.println("        if (obj == NULL) {");
        out.println("            JavaCPP_log(\"Error creating global reference of " + cls.getCanonicalName() + " instance for callback.\");");
        out.println("        } else {");
        out.println("            env->SetLongField(obj, JavaCPP_addressFID, ptr_to_jlong(this));");
        out.println("        }");
        out.println("        ptr = &" + callbackName + ";");
        out.println("    }");
        out.println("    if (mid == NULL) {");
        out.println("        mid = JavaCPP_getMethodID(env, " + jclasses.index(cls) + ", \"" + callbackMethod.getName() + "\", \"(" + signature(callbackMethod.getParameterTypes()) + ")" + signature(callbackMethod.getReturnType()) + "\");");
        out.println("    }");
    }
    out.println("    if (env->IsSameObject(obj, NULL)) {");
    out.println("        JavaCPP_log(\"Function pointer object is NULL in callback for " + cls.getCanonicalName() + ".\");");
    out.println("    } else if (mid == NULL) {");
    out.println("        JavaCPP_log(\"Error getting method ID of function caller \\\"" + callbackMethod + "\\\" for callback.\");");
    out.println("    } else {");
    String s = "Object";
    if (callbackReturnType.isPrimitive()) {
        s = callbackReturnType.getName();
        s = Character.toUpperCase(s.charAt(0)) + s.substring(1);
    }
    out.println("        " + returnPrefix + "env->Call" + s + "MethodA(obj, mid, " + (callbackParameterTypes.length == 0 ? "NULL);" : "args);"));
    out.println("        if ((exc = env->ExceptionOccurred()) != NULL) {");
    out.println("            env->ExceptionClear();");
    out.println("        }");
    out.println("    }");
    for (int j = 0; j < callbackParameterTypes.length; j++) {
        if (Pointer.class.isAssignableFrom(callbackParameterTypes[j])) {
            String[] typeName = cppTypeName(callbackParameterTypes[j]);
            Annotation passBy = by(callbackParameterAnnotations[j]);
            String cast = cast(callbackParameterTypes[j], callbackParameterAnnotations[j]);
            String valueTypeName = valueTypeName(typeName);
            AdapterInformation adapterInfo = adapterInformation(true, valueTypeName, callbackParameterAnnotations[j]);
            if ("void*".equals(typeName[0]) && !callbackParameterTypes[j].isAnnotationPresent(Opaque.class)) {
                typeName[0] = "char*";
            }
            if (adapterInfo != null || passBy instanceof ByPtrPtr || passBy instanceof ByPtrRef) {
                out.println("    " + typeName[0] + " rptr" + j + typeName[1] + " = (" + typeName[0] + typeName[1] + ")jlong_to_ptr(env->GetLongField(obj" + j + ", JavaCPP_addressFID));");
                if (adapterInfo != null) {
                    out.println("    jlong rsize" + j + " = env->GetLongField(obj" + j + ", JavaCPP_limitFID);");
                    out.println("    void* rowner" + j + " = JavaCPP_getPointerOwner(env, obj" + j + ");");
                }
                if (!callbackParameterTypes[j].isAnnotationPresent(Opaque.class)) {
                    out.println("    jlong rposition" + j + " = env->GetLongField(obj" + j + ", JavaCPP_positionFID);");
                    out.println("    rptr" + j + " += rposition" + j + ";");
                    if (adapterInfo != null) {
                        out.println("    rsize" + j + " -= rposition" + j + ";");
                    }
                }
                if (adapterInfo != null) {
                    out.println("    adapter" + j + ".assign(rptr" + j + ", rsize" + j + ", rowner" + j + ");");
                } else if (passBy instanceof ByPtrPtr) {
                    out.println("    if (arg" + j + " != NULL) {");
                    out.println("        *arg" + j + " = *" + cast + "&rptr" + j + ";");
                    out.println("    }");
                } else if (passBy instanceof ByPtrRef) {
                    out.println("    arg" + j + " = " + cast + "rptr" + j + ";");
                }
            }
        }
        if (!callbackParameterTypes[j].isPrimitive()) {
            out.println("    env->DeleteLocalRef(obj" + j + ");");
        }
    }
    out.println("}");
    out.println("end:");
    if (callbackReturnType != void.class) {
        if ("void*".equals(returnTypeName[0]) && !callbackReturnType.isAnnotationPresent(Opaque.class)) {
            returnTypeName[0] = "char*";
        }
        if (Enum.class.isAssignableFrom(callbackReturnType)) {
            accessesEnums = true;
            s = enumValueType(callbackReturnType);
            if (s != null) {
                String S = Character.toUpperCase(s.charAt(0)) + s.substring(1);
                out.println("    if (rarg == NULL) {");
                out.println("        JavaCPP_log(\"Enum for return is NULL in callback for " + cls.getCanonicalName() + ".\");");
                out.println("    }");
                out.println("    " + returnTypeName[0] + " rval" + returnTypeName[1] + " = (" + returnTypeName[0] + returnTypeName[1] + ")(rarg == NULL ? 0 : env->Get" + S + "Field(rarg, JavaCPP_" + s + "ValueFID));");
            }
        } else if (Pointer.class.isAssignableFrom(callbackReturnType)) {
            out.println("    " + returnTypeName[0] + " rptr" + returnTypeName[1] + " = rarg == NULL ? NULL : (" + returnTypeName[0] + returnTypeName[1] + ")jlong_to_ptr(env->GetLongField(rarg, JavaCPP_addressFID));");
            if (returnAdapterInfo != null) {
                out.println("    jlong rsize = rarg == NULL ? 0 : env->GetLongField(rarg, JavaCPP_limitFID);");
                out.println("    void* rowner = JavaCPP_getPointerOwner(env, rarg);");
            }
            if (!callbackReturnType.isAnnotationPresent(Opaque.class)) {
                out.println("    jlong rposition = rarg == NULL ? 0 : env->GetLongField(rarg, JavaCPP_positionFID);");
                out.println("    rptr += rposition;");
                if (returnAdapterInfo != null) {
                    out.println("    rsize -= rposition;");
                }
            }
        } else if (callbackReturnType == String.class) {
            passesStrings = true;
            out.println("    " + returnTypeName[0] + " rptr" + returnTypeName[1] + " = JavaCPP_getStringBytes(env, rarg);");
            if (returnAdapterInfo != null) {
                out.println("    jlong rsize = 0;");
                out.println("    void* rowner = (void*)rptr");
            }
        } else if (Buffer.class.isAssignableFrom(callbackReturnType)) {
            out.println("    " + returnTypeName[0] + " rptr" + returnTypeName[1] + " = rarg == NULL ? NULL : env->GetDirectBufferAddress(rarg);");
            if (returnAdapterInfo != null) {
                out.println("    jlong rsize = rarg == NULL ? 0 : env->GetDirectBufferCapacity(rarg);");
                out.println("    void* rowner = (void*)rptr;");
            }
        } else if (!callbackReturnType.isPrimitive()) {
            logger.warn("Callback \"" + callbackMethod + "\" has unsupported return type \"" + callbackReturnType.getCanonicalName() + "\". Compilation will most likely fail.");
        }
    }
    passesStrings = true;
    out.println("    if (exc != NULL) {");
    out.println("        jstring str = (jstring)env->CallObjectMethod(exc, JavaCPP_toStringMID);");
    out.println("        env->DeleteLocalRef(exc);");
    out.println("        const char *msg = JavaCPP_getStringBytes(env, str);");
    out.println("        JavaCPP_exception e(msg);");
    out.println("        JavaCPP_releaseStringBytes(env, str, msg);");
    out.println("        env->DeleteLocalRef(str);");
    out.println("        JavaCPP_detach(attached);");
    out.println("        throw e;");
    out.println("    } else {");
    out.println("        JavaCPP_detach(attached);");
    out.println("    }");
    if (callbackReturnType != void.class) {
        if (callbackReturnType.isPrimitive()) {
            out.println("    return " + callbackReturnCast + "rarg;");
        } else if (Enum.class.isAssignableFrom(callbackReturnType)) {
            out.println("    return " + callbackReturnCast + "rval;");
        } else if (returnAdapterInfo != null) {
            usesAdapters = true;
            out.println("    return " + returnAdapterInfo.name + "(" + callbackReturnCast + "rptr, rsize, rowner);");
        } else if (FunctionPointer.class.isAssignableFrom(callbackReturnType)) {
            functions.index(callbackReturnType);
            out.println("    return " + callbackReturnCast + "(rptr == NULL ? NULL : rptr->ptr);");
        } else if (returnBy instanceof ByVal || returnBy instanceof ByRef) {
            out.println("    if (rptr == NULL) {");
            out.println("        JavaCPP_log(\"Return pointer address is NULL in callback for " + cls.getCanonicalName() + ".\");");
            out.println("        static " + returnConvention[0] + " empty" + returnTypeName[1] + ";");
            out.println("        return empty;");
            out.println("    } else {");
            out.println("        return *" + callbackReturnCast + "rptr;");
            out.println("    }");
        } else if (returnBy instanceof ByPtrPtr) {
            out.println("    return " + callbackReturnCast + "&rptr;");
        } else {
            // ByPtr || ByPtrRef
            out.println("    return " + callbackReturnCast + "rptr;");
        }
    }
    out.println("}");
}