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Generator.java
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Generator.java
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/*
* Copyright (C) 2011-2016 Samuel Audet
*
* Licensed either under the Apache License, Version 2.0, or (at your option)
* under the terms of the GNU General Public License as published by
* the Free Software Foundation (subject to the "Classpath" exception),
* either version 2, or any later version (collectively, the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
* http://www.gnu.org/licenses/
* http://www.gnu.org/software/classpath/license.html
*
* or as provided in the LICENSE.txt file that accompanied this code.
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.bytedeco.javacpp.tools;
import java.io.Closeable;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.io.Writer;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.DoubleBuffer;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.nio.LongBuffer;
import java.nio.ShortBuffer;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.Deque;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.bytedeco.javacpp.BoolPointer;
import org.bytedeco.javacpp.BytePointer;
import org.bytedeco.javacpp.CLongPointer;
import org.bytedeco.javacpp.CharPointer;
import org.bytedeco.javacpp.ClassProperties;
import org.bytedeco.javacpp.DoublePointer;
import org.bytedeco.javacpp.FloatPointer;
import org.bytedeco.javacpp.FunctionPointer;
import org.bytedeco.javacpp.IntPointer;
import org.bytedeco.javacpp.Loader;
import org.bytedeco.javacpp.LongPointer;
import org.bytedeco.javacpp.Pointer;
import org.bytedeco.javacpp.PointerPointer;
import org.bytedeco.javacpp.ShortPointer;
import org.bytedeco.javacpp.SizeTPointer;
import org.bytedeco.javacpp.annotation.Adapter;
import org.bytedeco.javacpp.annotation.Allocator;
import org.bytedeco.javacpp.annotation.ArrayAllocator;
import org.bytedeco.javacpp.annotation.ByPtr;
import org.bytedeco.javacpp.annotation.ByPtrPtr;
import org.bytedeco.javacpp.annotation.ByPtrRef;
import org.bytedeco.javacpp.annotation.ByRef;
import org.bytedeco.javacpp.annotation.ByVal;
import org.bytedeco.javacpp.annotation.Cast;
import org.bytedeco.javacpp.annotation.Const;
import org.bytedeco.javacpp.annotation.Convention;
import org.bytedeco.javacpp.annotation.Function;
import org.bytedeco.javacpp.annotation.Index;
import org.bytedeco.javacpp.annotation.MemberGetter;
import org.bytedeco.javacpp.annotation.MemberSetter;
import org.bytedeco.javacpp.annotation.Name;
import org.bytedeco.javacpp.annotation.Namespace;
import org.bytedeco.javacpp.annotation.NoDeallocator;
import org.bytedeco.javacpp.annotation.NoException;
import org.bytedeco.javacpp.annotation.NoOffset;
import org.bytedeco.javacpp.annotation.Opaque;
import org.bytedeco.javacpp.annotation.Platform;
import org.bytedeco.javacpp.annotation.Raw;
import org.bytedeco.javacpp.annotation.ValueGetter;
import org.bytedeco.javacpp.annotation.ValueSetter;
import org.bytedeco.javacpp.annotation.Virtual;
/**
* The Generator is where all the C++ source code that we need gets generated.
* It has not been designed in any meaningful way since the requirements were
* not well understood. It is basically a prototype and is really quite a mess.
* Now that we understand better what we need, it could use some refactoring.
* <p>
* When attempting to understand what the Generator does, try to run experiments
* and inspect the generated code: It is quite readable.
* <p>
* Moreover, although Generator is the one ultimately doing something with the
* various annotations it relies on, it was easier to describe the behavior its
* meant to have with them as part of the documentation of the annotations, so
* we can refer to them to understand more about how Generator should work:
*
* @see Adapter
* @see Allocator
* @see ArrayAllocator
* @see ByPtr
* @see ByPtrPtr
* @see ByPtrRef
* @see ByRef
* @see ByVal
* @see Cast
* @see Const
* @see Convention
* @see Function
* @see Index
* @see MemberGetter
* @see MemberSetter
* @see Name
* @see Namespace
* @see NoDeallocator
* @see NoException
* @see NoOffset
* @see Opaque
* @see Platform
* @see Raw
* @see ValueGetter
* @see ValueSetter
*
* @author Samuel Audet
*/
public class Generator implements Closeable {
public Generator(Logger logger, ClassProperties properties) {
this.logger = logger;
this.properties = properties;
}
static final String JNI_VERSION = "JNI_VERSION_1_4";
static final List<Class> baseClasses = Arrays.asList(new Class[] {
Pointer.class,
//FunctionPointer.class,
BytePointer.class,
ShortPointer.class,
IntPointer.class,
LongPointer.class,
FloatPointer.class,
DoublePointer.class,
CharPointer.class,
PointerPointer.class,
BoolPointer.class,
CLongPointer.class,
SizeTPointer.class });
final Logger logger;
final ClassProperties properties;
PrintWriter out, out2;
IndexedSet<String> callbacks;
IndexedSet<Class> functions, deallocators, arrayDeallocators, jclasses;
Map<Class,Set<String>> members, virtualFunctions, virtualMembers;
Map<Method,MethodInformation> annotationCache;
boolean mayThrowExceptions, usesAdapters, passesStrings;
public boolean generate(String sourceFilename, String headerFilename,
String classPath, Class<?> ... classes) throws FileNotFoundException {
// first pass using a null writer to fill up the IndexedSet objects
out = new PrintWriter(new Writer() {
@Override public void write(char[] cbuf, int off, int len) { }
@Override public void flush() { }
@Override public void close() { }
});
out2 = null;
callbacks = new IndexedSet<String>();
functions = new IndexedSet<Class>();
deallocators = new IndexedSet<Class>();
arrayDeallocators = new IndexedSet<Class>();
jclasses = new IndexedSet<Class>();
members = new HashMap<Class,Set<String>>();
virtualFunctions = new HashMap<Class,Set<String>>();
virtualMembers = new HashMap<Class,Set<String>>();
annotationCache = new HashMap<Method,MethodInformation>();
mayThrowExceptions = false;
usesAdapters = false;
passesStrings = false;
for (Class<?> cls : baseClasses) {
jclasses.index(cls);
}
if (classes(true, true, true, classPath, classes)) {
// second pass with a real writer
File sourceFile = new File(sourceFilename);
File sourceDir = sourceFile.getParentFile();
if (sourceDir != null) {
sourceDir.mkdirs();
}
out = new PrintWriter(sourceFile);
if (headerFilename != null) {
File headerFile = new File(headerFilename);
File headerDir = headerFile.getParentFile();
if (headerDir != null) {
headerDir.mkdirs();
}
out2 = new PrintWriter(headerFile);
}
return classes(mayThrowExceptions, usesAdapters, passesStrings, classPath, classes);
} else {
return false;
}
}
public void close() {
if (out != null) {
out.close();
}
if (out2 != null) {
out2.close();
}
}
boolean classes(boolean handleExceptions, boolean defineAdapters, boolean convertStrings, String classPath, Class<?> ... classes) {
String version = Generator.class.getPackage().getImplementationVersion();
if (version == null) {
version = "unknown";
}
String warning = "// Generated by JavaCPP version " + version + ": DO NOT EDIT THIS FILE";
out.println(warning);
out.println();
if (out2 != null) {
out2.println(warning);
out2.println();
}
for (String s : properties.get("platform.pragma")) {
out.println("#pragma " + s);
}
for (String s : properties.get("platform.define")) {
out.println("#define " + s);
}
out.println();
out.println("#ifdef _WIN32");
out.println(" #define _JAVASOFT_JNI_MD_H_");
out.println();
out.println(" #define JNIEXPORT __declspec(dllexport)");
out.println(" #define JNIIMPORT __declspec(dllimport)");
out.println(" #define JNICALL __stdcall");
out.println();
out.println(" typedef int jint;");
out.println(" typedef long long jlong;");
out.println(" typedef signed char jbyte;");
out.println("#elif defined(__GNUC__)");
out.println(" #define _JAVASOFT_JNI_MD_H_");
out.println();
out.println(" #define JNIEXPORT __attribute__((visibility(\"default\")))");
out.println(" #define JNIIMPORT");
out.println(" #define JNICALL");
out.println();
out.println(" typedef int jint;");
out.println(" typedef long long jlong;");
out.println(" typedef signed char jbyte;");
out.println("#endif");
out.println();
out.println("#include <jni.h>");
if (out2 != null) {
out2.println("#include <jni.h>");
}
out.println();
out.println("#ifdef __ANDROID__");
out.println(" #include <android/log.h>");
out.println("#elif defined(__APPLE__) && defined(__OBJC__)");
out.println(" #include <TargetConditionals.h>");
out.println(" #include <Foundation/Foundation.h>");
out.println("#endif");
out.println();
out.println("#ifdef __linux__");
out.println(" #include <sys/types.h>");
out.println(" #include <sys/stat.h>");
out.println(" #include <fcntl.h>");
out.println(" #include <unistd.h>");
out.println("#elif defined(__APPLE__)");
out.println(" #include <mach/mach_init.h>");
out.println(" #include <mach/task.h>");
out.println("#elif defined(_WIN32)");
out.println(" #define NOMINMAX");
out.println(" #include <windows.h>");
out.println(" #include <psapi.h>");
out.println("#endif");
out.println();
out.println("#if defined(__ANDROID__) || TARGET_OS_IPHONE");
out.println(" #define NewWeakGlobalRef(obj) NewGlobalRef(obj)");
out.println(" #define DeleteWeakGlobalRef(obj) DeleteGlobalRef(obj)");
out.println("#endif");
out.println();
out.println("#include <limits.h>");
out.println("#include <stddef.h>");
out.println("#ifndef _WIN32");
out.println(" #include <stdint.h>");
out.println("#endif");
out.println("#include <stdio.h>");
out.println("#include <stdlib.h>");
out.println("#include <string.h>");
out.println("#include <exception>");
out.println("#include <memory>");
out.println("#include <new>");
out.println();
out.println("#if defined(NATIVE_ALLOCATOR) && defined(NATIVE_DEALLOCATOR)");
out.println(" void* operator new(std::size_t size, const std::nothrow_t&) throw() {");
out.println(" return NATIVE_ALLOCATOR(size);");
out.println(" }");
out.println(" void* operator new[](std::size_t size, const std::nothrow_t&) throw() {");
out.println(" return NATIVE_ALLOCATOR(size);");
out.println(" }");
out.println(" void* operator new(std::size_t size) throw(std::bad_alloc) {");
out.println(" return NATIVE_ALLOCATOR(size);");
out.println(" }");
out.println(" void* operator new[](std::size_t size) throw(std::bad_alloc) {");
out.println(" return NATIVE_ALLOCATOR(size);");
out.println(" }");
out.println(" void operator delete(void* ptr) throw() {");
out.println(" NATIVE_DEALLOCATOR(ptr);");
out.println(" }");
out.println(" void operator delete[](void* ptr) throw() {");
out.println(" NATIVE_DEALLOCATOR(ptr);");
out.println(" }");
out.println("#endif");
out.println();
out.println("#define jlong_to_ptr(a) ((void*)(uintptr_t)(a))");
out.println("#define ptr_to_jlong(a) ((jlong)(uintptr_t)(a))");
out.println();
out.println("#if defined(_MSC_VER)");
out.println(" #define JavaCPP_noinline __declspec(noinline)");
out.println(" #define JavaCPP_hidden /* hidden by default */");
out.println("#elif defined(__GNUC__)");
out.println(" #define JavaCPP_noinline __attribute__((noinline))");
out.println(" #define JavaCPP_hidden __attribute__((visibility(\"hidden\")))");
out.println("#else");
out.println(" #define JavaCPP_noinline");
out.println(" #define JavaCPP_hidden");
out.println("#endif");
out.println();
List[] include = { properties.get("platform.include"),
properties.get("platform.cinclude") };
for (int i = 0; i < include.length; i++) {
if (include[i] != null && include[i].size() > 0) {
if (i == 1) {
out.println("extern \"C\" {");
if (out2 != null) {
out2.println("#ifdef __cplusplus");
out2.println("extern \"C\" {");
out2.println("#endif");
}
}
for (String s : (List<String>)include[i]) {
String line = "#include ";
if (!s.startsWith("<") && !s.startsWith("\"")) {
line += '"';
}
line += s;
if (!s.endsWith(">") && !s.endsWith("\"")) {
line += '"';
}
out.println(line);
if (out2 != null) {
out2.println(line);
}
}
if (i == 1) {
out.println("}");
if (out2 != null) {
out2.println("#ifdef __cplusplus");
out2.println("}");
out2.println("#endif");
}
}
out.println();
}
}
out.println("static JavaVM* JavaCPP_vm = NULL;");
out.println("static bool JavaCPP_haveAllocObject = false;");
out.println("static bool JavaCPP_haveNonvirtual = false;");
out.println("static const char* JavaCPP_classNames[" + jclasses.size() + "] = {");
Iterator<Class> classIterator = jclasses.iterator();
int maxMemberSize = 0;
while (classIterator.hasNext()) {
Class c = classIterator.next();
out.print(" \"" + c.getName().replace('.','/') + "\"");
if (classIterator.hasNext()) {
out.println(",");
}
Set<String> m = members.get(c);
if (m != null && m.size() > maxMemberSize) {
maxMemberSize = m.size();
}
}
out.println(" };");
out.println("static jclass JavaCPP_classes[" + jclasses.size() + "] = { NULL };");
out.println("static jfieldID JavaCPP_addressFID = NULL;");
out.println("static jfieldID JavaCPP_positionFID = NULL;");
out.println("static jfieldID JavaCPP_limitFID = NULL;");
out.println("static jfieldID JavaCPP_capacityFID = NULL;");
out.println("static jfieldID JavaCPP_deallocatorFID = NULL;");
out.println("static jfieldID JavaCPP_ownerAddressFID = NULL;");
out.println("static jmethodID JavaCPP_initMID = NULL;");
out.println("static jmethodID JavaCPP_arrayMID = NULL;");
out.println("static jmethodID JavaCPP_stringMID = NULL;");
out.println("static jmethodID JavaCPP_getBytesMID = NULL;");
out.println("static jmethodID JavaCPP_toStringMID = NULL;");
out.println();
out.println("static inline void JavaCPP_log(const char* fmt, ...) {");
out.println(" va_list ap;");
out.println(" va_start(ap, fmt);");
out.println("#ifdef __ANDROID__");
out.println(" __android_log_vprint(ANDROID_LOG_ERROR, \"javacpp\", fmt, ap);");
out.println("#elif defined(__APPLE__) && defined(__OBJC__)");
out.println(" NSLogv([NSString stringWithUTF8String:fmt], ap);");
out.println("#else");
out.println(" vfprintf(stderr, fmt, ap);");
out.println(" fprintf(stderr, \"\\n\");");
out.println("#endif");
out.println(" va_end(ap);");
out.println("}");
out.println();
out.println("static inline jlong JavaCPP_physicalBytes() {");
out.println(" jlong size = 0;");
out.println("#ifdef __linux__");
out.println(" static int fd = open(\"/proc/self/statm\", O_RDONLY, 0);");
out.println(" if (fd >= 0) {");
out.println(" char line[256];");
out.println(" char* space;");
out.println(" lseek(fd, 0, SEEK_SET);");
out.println(" if (read(fd, line, sizeof(line)) > 0 && (space = strchr(line, ' ')) != NULL) {");
out.println(" size = (jlong)(atoll(space + 1) * getpagesize());");
out.println(" }");
out.println(" // no close(fd);");
out.println(" }");
out.println("#elif defined(__APPLE__)");
out.println(" task_basic_info info = {};");
out.println(" mach_msg_type_number_t count = TASK_BASIC_INFO_COUNT;");
out.println(" task_info(current_task(), TASK_BASIC_INFO, (task_info_t)&info, &count);");
out.println(" size = (jlong)info.resident_size;");
out.println("#elif defined(_WIN32)");
out.println(" PROCESS_MEMORY_COUNTERS counters;");
out.println(" if (GetProcessMemoryInfo(GetCurrentProcess(), &counters, sizeof(counters))) {");
out.println(" size = (jlong)counters.WorkingSetSize;");
out.println(" }");
out.println("#endif");
out.println(" return size;");
out.println("}");
out.println();
out.println("static JavaCPP_noinline jclass JavaCPP_getClass(JNIEnv* env, int i) {");
out.println(" if (JavaCPP_classes[i] == NULL && env->PushLocalFrame(1) == 0) {");
out.println(" jclass cls = env->FindClass(JavaCPP_classNames[i]);");
out.println(" if (cls == NULL || env->ExceptionCheck()) {");
out.println(" JavaCPP_log(\"Error loading class %s.\", JavaCPP_classNames[i]);");
out.println(" return NULL;");
out.println(" }");
out.println(" JavaCPP_classes[i] = (jclass)env->NewWeakGlobalRef(cls);");
out.println(" if (JavaCPP_classes[i] == NULL || env->ExceptionCheck()) {");
out.println(" JavaCPP_log(\"Error creating global reference of class %s.\", JavaCPP_classNames[i]);");
out.println(" return NULL;");
out.println(" }");
out.println(" env->PopLocalFrame(NULL);");
out.println(" }");
out.println(" return JavaCPP_classes[i];");
out.println("}");
out.println();
out.println("static JavaCPP_noinline jfieldID JavaCPP_getFieldID(JNIEnv* env, int i, const char* name, const char* sig) {");
out.println(" jclass cls = JavaCPP_getClass(env, i);");
out.println(" if (cls == NULL) {");
out.println(" return NULL;");
out.println(" }");
out.println(" jfieldID fid = env->GetFieldID(cls, name, sig);");
out.println(" if (fid == NULL || env->ExceptionCheck()) {");
out.println(" JavaCPP_log(\"Error getting field ID of %s/%s\", JavaCPP_classNames[i], name);");
out.println(" return NULL;");
out.println(" }");
out.println(" return fid;");
out.println("}");
out.println();
out.println("static JavaCPP_noinline jmethodID JavaCPP_getMethodID(JNIEnv* env, int i, const char* name, const char* sig) {");
out.println(" jclass cls = JavaCPP_getClass(env, i);");
out.println(" if (cls == NULL) {");
out.println(" return NULL;");
out.println(" }");
out.println(" jmethodID mid = env->GetMethodID(cls, name, sig);");
out.println(" if (mid == NULL || env->ExceptionCheck()) {");
out.println(" JavaCPP_log(\"Error getting method ID of %s/%s\", JavaCPP_classNames[i], name);");
out.println(" return NULL;");
out.println(" }");
out.println(" return mid;");
out.println("}");
out.println();
out.println("static JavaCPP_noinline jmethodID JavaCPP_getStaticMethodID(JNIEnv* env, int i, const char* name, const char* sig) {");
out.println(" jclass cls = JavaCPP_getClass(env, i);");
out.println(" if (cls == NULL) {");
out.println(" return NULL;");
out.println(" }");
out.println(" jmethodID mid = env->GetStaticMethodID(cls, name, sig);");
out.println(" if (mid == NULL || env->ExceptionCheck()) {");
out.println(" JavaCPP_log(\"Error getting static method ID of %s/%s\", JavaCPP_classNames[i], name);");
out.println(" return NULL;");
out.println(" }");
out.println(" return mid;");
out.println("}");
out.println();
out.println("static JavaCPP_noinline jobject JavaCPP_createPointer(JNIEnv* env, int i, jclass cls = NULL) {");
out.println(" if (cls == NULL && (cls = JavaCPP_getClass(env, i)) == NULL) {");
out.println(" return NULL;");
out.println(" }");
out.println(" if (JavaCPP_haveAllocObject) {");
out.println(" return env->AllocObject(cls);");
out.println(" } else {");
out.println(" jmethodID mid = env->GetMethodID(cls, \"<init>\", \"(Lorg/bytedeco/javacpp/Pointer;)V\");");
out.println(" if (mid == NULL || env->ExceptionCheck()) {");
out.println(" JavaCPP_log(\"Error getting Pointer constructor of %s, while VM does not support AllocObject()\", JavaCPP_classNames[i]);");
out.println(" return NULL;");
out.println(" }");
out.println(" return env->NewObject(cls, mid, NULL);");
out.println(" }");
out.println("}");
out.println();
out.println("static JavaCPP_noinline void JavaCPP_initPointer(JNIEnv* env, jobject obj, const void* ptr, jlong size, void* owner, void (*deallocator)(void*)) {");
out.println(" if (deallocator != NULL) {");
out.println(" jvalue args[4];");
out.println(" args[0].j = ptr_to_jlong(ptr);");
out.println(" args[1].j = size;");
out.println(" args[2].j = ptr_to_jlong(owner);");
out.println(" args[3].j = ptr_to_jlong(deallocator);");
out.println(" if (JavaCPP_haveNonvirtual) {");
out.println(" env->CallNonvirtualVoidMethodA(obj, JavaCPP_getClass(env, "
+ jclasses.index(Pointer.class) + "), JavaCPP_initMID, args);");
out.println(" } else {");
out.println(" env->CallVoidMethodA(obj, JavaCPP_initMID, args);");
out.println(" }");
out.println(" } else {");
out.println(" env->SetLongField(obj, JavaCPP_addressFID, ptr_to_jlong(ptr));");
out.println(" env->SetLongField(obj, JavaCPP_limitFID, (jlong)size);");
out.println(" env->SetLongField(obj, JavaCPP_capacityFID, (jlong)size);");
out.println(" }");
out.println("}");
out.println();
if (handleExceptions || convertStrings) {
out.println("static JavaCPP_noinline jstring JavaCPP_createString(JNIEnv* env, const char* ptr) {");
out.println(" if (ptr == NULL) {");
out.println(" return NULL;");
out.println(" }");
out.println("#ifdef MODIFIED_UTF8_STRING");
out.println(" return env->NewStringUTF(ptr);");
out.println("#else");
out.println(" size_t length = strlen(ptr);");
out.println(" jbyteArray bytes = env->NewByteArray(length < INT_MAX ? length : INT_MAX);");
out.println(" env->SetByteArrayRegion(bytes, 0, length < INT_MAX ? length : INT_MAX, (signed char*)ptr);");
out.println(" return (jstring)env->NewObject(JavaCPP_getClass(env, " + jclasses.index(String.class) + "), JavaCPP_stringMID, bytes);");
out.println("#endif");
out.println("}");
out.println();
}
if (convertStrings) {
out.println("static JavaCPP_noinline const char* JavaCPP_getStringBytes(JNIEnv* env, jstring str) {");
out.println(" if (str == NULL) {");
out.println(" return NULL;");
out.println(" }");
out.println("#ifdef MODIFIED_UTF8_STRING");
out.println(" return env->GetStringUTFChars(str, NULL);");
out.println("#else");
out.println(" jbyteArray bytes = (jbyteArray)env->CallObjectMethod(str, JavaCPP_getBytesMID);");
out.println(" if (bytes == NULL || env->ExceptionCheck()) {");
out.println(" JavaCPP_log(\"Error getting bytes from string.\");");
out.println(" return NULL;");
out.println(" }");
out.println(" jsize length = env->GetArrayLength(bytes);");
out.println(" signed char* ptr = new (std::nothrow) signed char[length + 1];");
out.println(" if (ptr != NULL) {");
out.println(" env->GetByteArrayRegion(bytes, 0, length, ptr);");
out.println(" ptr[length] = 0;");
out.println(" }");
out.println(" return (const char*)ptr;");
out.println("#endif");
out.println("}");
out.println();
out.println("static JavaCPP_noinline void JavaCPP_releaseStringBytes(JNIEnv* env, jstring str, const char* ptr) {");
out.println("#ifdef MODIFIED_UTF8_STRING");
out.println(" if (str != NULL) {");
out.println(" env->ReleaseStringUTFChars(str, ptr);");
out.println(" }");
out.println("#else");
out.println(" delete[] ptr;");
out.println("#endif");
out.println("}");
out.println();
}
out.println("class JavaCPP_hidden JavaCPP_exception : public std::exception {");
out.println("public:");
out.println(" JavaCPP_exception(const char* str) throw() {");
out.println(" if (str == NULL) {");
out.println(" strcpy(msg, \"Unknown exception.\");");
out.println(" } else {");
out.println(" strncpy(msg, str, sizeof(msg));");
out.println(" msg[sizeof(msg) - 1] = 0;");
out.println(" }");
out.println(" }");
out.println(" virtual const char* what() const throw() { return msg; }");
out.println(" char msg[1024];");
out.println("};");
out.println();
if (handleExceptions) {
out.println("#ifndef GENERIC_EXCEPTION_CLASS");
out.println("#define GENERIC_EXCEPTION_CLASS std::exception");
out.println("#endif");
out.println("static JavaCPP_noinline jthrowable JavaCPP_handleException(JNIEnv* env, int i) {");
out.println(" jstring str = NULL;");
out.println(" try {");
out.println(" throw;");
out.println(" } catch (GENERIC_EXCEPTION_CLASS& e) {");
out.println(" str = JavaCPP_createString(env, e.what());");
out.println(" } catch (...) {");
out.println(" str = JavaCPP_createString(env, \"Unknown exception.\");");
out.println(" }");
out.println(" jmethodID mid = JavaCPP_getMethodID(env, i, \"<init>\", \"(Ljava/lang/String;)V\");");
out.println(" if (mid == NULL) {");
out.println(" return NULL;");
out.println(" }");
out.println(" return (jthrowable)env->NewObject(JavaCPP_getClass(env, i), mid, str);");
out.println("}");
out.println();
}
Class deallocator, nativeDeallocator;
try {
deallocator = Class.forName(Pointer.class.getName() + "$Deallocator", false, Pointer.class.getClassLoader());
nativeDeallocator = Class.forName(Pointer.class.getName() + "$NativeDeallocator", false, Pointer.class.getClassLoader());
} catch (ClassNotFoundException ex) {
throw new RuntimeException(ex);
}
if (defineAdapters) {
out.println("static JavaCPP_noinline void* JavaCPP_getPointerOwner(JNIEnv* env, jobject obj) {");
out.println(" if (obj != NULL) {");
out.println(" jobject deallocator = env->GetObjectField(obj, JavaCPP_deallocatorFID);");
out.println(" if (deallocator != NULL && env->IsInstanceOf(deallocator, JavaCPP_getClass(env, "
+ jclasses.index(nativeDeallocator) + "))) {");
out.println(" return jlong_to_ptr(env->GetLongField(deallocator, JavaCPP_ownerAddressFID));");
out.println(" }");
out.println(" }");
out.println(" return NULL;");
out.println("}");
out.println();
out.println("#include <vector>");
out.println("template<typename P, typename T = P> class JavaCPP_hidden VectorAdapter {");
out.println("public:");
out.println(" VectorAdapter(const P* ptr, typename std::vector<T>::size_type size, void* owner) : ptr((P*)ptr), size(size), owner(owner),");
out.println(" vec2(ptr ? std::vector<T>((P*)ptr, (P*)ptr + size) : std::vector<T>()), vec(vec2) { }");
out.println(" VectorAdapter(const std::vector<T>& vec) : ptr(0), size(0), owner(0), vec2(vec), vec(vec2) { }");
out.println(" VectorAdapter( std::vector<T>& vec) : ptr(0), size(0), owner(0), vec(vec) { }");
out.println(" VectorAdapter(const std::vector<T>* vec) : ptr(0), size(0), owner(0), vec(*(std::vector<T>*)vec) { }");
out.println(" void assign(P* ptr, typename std::vector<T>::size_type size, void* owner) {");
out.println(" this->ptr = ptr;");
out.println(" this->size = size;");
out.println(" this->owner = owner;");
out.println(" vec.assign(ptr, ptr + size);");
out.println(" }");
out.println(" static void deallocate(void* owner) { operator delete(owner); }");
out.println(" operator P*() {");
out.println(" if (vec.size() > size) {");
out.println(" ptr = (P*)(operator new(sizeof(P) * vec.size(), std::nothrow_t()));");
out.println(" }");
out.println(" if (ptr) {");
out.println(" std::copy(vec.begin(), vec.end(), ptr);");
out.println(" }");
out.println(" size = vec.size();");
out.println(" owner = ptr;");
out.println(" return ptr;");
out.println(" }");
out.println(" operator const P*() { return &vec[0]; }");
out.println(" operator std::vector<T>&() { return vec; }");
out.println(" operator std::vector<T>*() { return ptr ? &vec : 0; }");
out.println(" P* ptr;");
out.println(" typename std::vector<T>::size_type size;");
out.println(" void* owner;");
out.println(" std::vector<T> vec2;");
out.println(" std::vector<T>& vec;");
out.println("};");
out.println();
out.println("#include <string>");
out.println("class JavaCPP_hidden StringAdapter {");
out.println("public:");
out.println(" StringAdapter(const char* ptr, size_t size, void* owner) : ptr((char*)ptr), size(size), owner(owner),");
out.println(" str2(ptr ? (char*)ptr : \"\", ptr ? (size > 0 ? size : strlen((char*)ptr)) : 0), str(str2) { }");
out.println(" StringAdapter(const signed char* ptr, size_t size, void* owner) : ptr((char*)ptr), size(size), owner(owner),");
out.println(" str2(ptr ? (char*)ptr : \"\", ptr ? (size > 0 ? size : strlen((char*)ptr)) : 0), str(str2) { }");
out.println(" StringAdapter(const unsigned char* ptr, size_t size, void* owner) : ptr((char*)ptr), size(size), owner(owner),");
out.println(" str2(ptr ? (char*)ptr : \"\", ptr ? (size > 0 ? size : strlen((char*)ptr)) : 0), str(str2) { }");
out.println(" StringAdapter(const std::string& str) : ptr(0), size(0), owner(0), str2(str), str(str2) { }");
out.println(" StringAdapter( std::string& str) : ptr(0), size(0), owner(0), str(str) { }");
out.println(" StringAdapter(const std::string* str) : ptr(0), size(0), owner(0), str(*(std::string*)str) { }");
out.println(" void assign(char* ptr, size_t size, void* owner) {");
out.println(" this->ptr = ptr;");
out.println(" this->size = size;");
out.println(" this->owner = owner;");
out.println(" str.assign(ptr ? ptr : \"\", ptr ? (size > 0 ? size : strlen((char*)ptr)) : 0);");
out.println(" }");
out.println(" void assign(const char* ptr, size_t size, void* owner) { assign((char*)ptr, size, owner); }");
out.println(" void assign(const signed char* ptr, size_t size, void* owner) { assign((char*)ptr, size, owner); }");
out.println(" void assign(const unsigned char* ptr, size_t size, void* owner) { assign((char*)ptr, size, owner); }");
out.println(" static void deallocate(void* owner) { delete[] (char*)owner; }");
out.println(" operator char*() {");
out.println(" const char* data = str.data();");
out.println(" if (str.size() > size) {");
out.println(" ptr = new (std::nothrow) char[str.size()+1];");
out.println(" if (ptr) memset(ptr, 0, str.size()+1);");
out.println(" }");
out.println(" if (ptr && memcmp(ptr, data, str.size()) != 0) {");
out.println(" memcpy(ptr, data, str.size());");
out.println(" if (size > str.size()) ptr[str.size()] = 0;");
out.println(" }");
out.println(" size = str.size();");
out.println(" owner = ptr;");
out.println(" return ptr;");
out.println(" }");
out.println(" operator signed char*() { return (signed char*)(operator char*)(); }");
out.println(" operator unsigned char*() { return (unsigned char*)(operator char*)(); }");
out.println(" operator const char*() { return str.c_str(); }");
out.println(" operator const signed char*() { return (signed char*)str.c_str(); }");
out.println(" operator const unsigned char*() { return (unsigned char*)str.c_str(); }");
out.println(" operator std::string&() { return str; }");
out.println(" operator std::string*() { return ptr ? &str : 0; }");
out.println(" char* ptr;");
out.println(" size_t size;");
out.println(" void* owner;");
out.println(" std::string str2;");
out.println(" std::string& str;");
out.println("};");
out.println();
out.println("#ifdef SHARED_PTR_NAMESPACE");
out.println("template<class T> class SharedPtrAdapter {");
out.println("public:");
out.println(" typedef SHARED_PTR_NAMESPACE::shared_ptr<T> S;");
out.println(" SharedPtrAdapter(const T* ptr, size_t size, void* owner) : ptr((T*)ptr), size(size), owner(owner),");
out.println(" sharedPtr2(owner != NULL && owner != ptr ? *(S*)owner : S((T*)ptr)), sharedPtr(sharedPtr2) { }");
out.println(" SharedPtrAdapter(const S& sharedPtr) : ptr(0), size(0), owner(0), sharedPtr2(sharedPtr), sharedPtr(sharedPtr2) { }");
out.println(" SharedPtrAdapter( S& sharedPtr) : ptr(0), size(0), owner(0), sharedPtr(sharedPtr) { }");
out.println(" SharedPtrAdapter(const S* sharedPtr) : ptr(0), size(0), owner(0), sharedPtr(*(S*)sharedPtr) { }");
out.println(" void assign(T* ptr, size_t size, S* owner) {");
out.println(" this->ptr = ptr;");
out.println(" this->size = size;");
out.println(" this->owner = owner;");
out.println(" this->sharedPtr = owner != NULL && owner != ptr ? *(S*)owner : S((T*)ptr);");
out.println(" }");
out.println(" static void deallocate(void* owner) { delete (S*)owner; }");
out.println(" operator T*() {");
out.println(" ptr = sharedPtr.get();");
out.println(" if (owner == NULL || owner == ptr) {");
out.println(" owner = new S(sharedPtr);");
out.println(" }");
out.println(" return ptr;");
out.println(" }");
out.println(" operator const T*() { return sharedPtr.get(); }");
out.println(" operator S&() { return sharedPtr; }");
out.println(" operator S*() { return &sharedPtr; }");
out.println(" T* ptr;");
out.println(" size_t size;");
out.println(" void* owner;");
out.println(" S sharedPtr2;");
out.println(" S& sharedPtr;");
out.println("};");
out.println("#endif");
out.println();
out.println("#ifdef UNIQUE_PTR_NAMESPACE");
out.println("template<class T> class UniquePtrAdapter {");
out.println("public:");
out.println(" typedef UNIQUE_PTR_NAMESPACE::unique_ptr<T> U;");
out.println(" UniquePtrAdapter(const T* ptr, size_t size, void* owner) : ptr((T*)ptr), size(size), owner(owner),");
out.println(" uniquePtr2(owner != NULL && owner != ptr ? U() : U((T*)ptr)),");
out.println(" uniquePtr(owner != NULL && owner != ptr ? *(U*)owner : uniquePtr2) { }");
out.println(" UniquePtrAdapter(const U& uniquePtr) : ptr(0), size(0), owner(0), uniquePtr((U&)uniquePtr) { }");
out.println(" UniquePtrAdapter( U& uniquePtr) : ptr(0), size(0), owner(0), uniquePtr(uniquePtr) { }");
out.println(" UniquePtrAdapter(const U* uniquePtr) : ptr(0), size(0), owner(0), uniquePtr(*(U*)uniquePtr) { }");
out.println(" void assign(T* ptr, size_t size, U* owner) {");
out.println(" this->ptr = ptr;");
out.println(" this->size = size;");
out.println(" this->owner = owner;");
out.println(" this->uniquePtr = owner != NULL && owner != ptr ? *(U*)owner : U((T*)ptr);");
out.println(" }");
out.println(" static void deallocate(void* owner) { delete (U*)owner; }");
out.println(" operator T*() {");
out.println(" ptr = uniquePtr.get();");
out.println(" if (owner == NULL || owner == ptr) {");
out.println(" owner = new U(UNIQUE_PTR_NAMESPACE::move(uniquePtr));");
out.println(" }");
out.println(" return ptr;");
out.println(" }");
out.println(" operator const T*() { return uniquePtr.get(); }");
out.println(" operator U&() { return uniquePtr; }");
out.println(" operator U*() { return &uniquePtr; }");
out.println(" T* ptr;");
out.println(" size_t size;");
out.println(" void* owner;");
out.println(" U uniquePtr2;");
out.println(" U& uniquePtr;");
out.println("};");
out.println("#endif");
out.println();
}
if (!functions.isEmpty() || !virtualFunctions.isEmpty()) {
out.println("static JavaCPP_noinline void JavaCPP_detach(bool detach) {");
out.println(" if (detach && JavaCPP_vm->DetachCurrentThread() != JNI_OK) {");
out.println(" JavaCPP_log(\"Could not detach the JavaVM from the current thread.\");");
out.println(" }");
out.println("}");
out.println();
out.println("static JavaCPP_noinline bool JavaCPP_getEnv(JNIEnv** env) {");
out.println(" bool attached = false;");
out.println(" JavaVM *vm = JavaCPP_vm;");
out.println(" if (vm == NULL) {");
if (out2 != null) {
out.println("#if !defined(__ANDROID__) && !TARGET_OS_IPHONE");
out.println(" int size = 1;");
out.println(" if (JNI_GetCreatedJavaVMs(&vm, 1, &size) != JNI_OK || size == 0) {");
out.println("#endif");
}
out.println(" JavaCPP_log(\"Could not get any created JavaVM.\");");
out.println(" *env = NULL;");
out.println(" return false;");
if (out2 != null) {
out.println("#if !defined(__ANDROID__) && !TARGET_OS_IPHONE");
out.println(" }");
out.println("#endif");
}
out.println(" }");
out.println(" if (vm->GetEnv((void**)env, " + JNI_VERSION + ") != JNI_OK) {");
out.println(" struct {");
out.println(" JNIEnv **env;");
out.println(" operator JNIEnv**() { return env; } // Android JNI");
out.println(" operator void**() { return (void**)env; } // standard JNI");
out.println(" } env2 = { env };");
out.println(" if (vm->AttachCurrentThread(env2, NULL) != JNI_OK) {");
out.println(" JavaCPP_log(\"Could not attach the JavaVM to the current thread.\");");
out.println(" *env = NULL;");
out.println(" return false;");
out.println(" }");
out.println(" attached = true;");
out.println(" }");
out.println(" if (JavaCPP_vm == NULL) {");
out.println(" if (JNI_OnLoad(vm, NULL) < 0) {");
out.println(" JavaCPP_detach(attached);");
out.println(" *env = NULL;");
out.println(" return false;");
out.println(" }");
out.println(" }");
out.println(" return attached;");
out.println("}");
out.println();
}
for (Class c : functions) {
String[] typeName = cppTypeName(c);
String[] returnConvention = typeName[0].split("\\(");
returnConvention[1] = constValueTypeName(returnConvention[1]);
String parameterDeclaration = typeName[1].substring(1);
String instanceTypeName = functionClassName(c);
out.println("struct JavaCPP_hidden " + instanceTypeName + " {");
out.println(" " + instanceTypeName + "() : ptr(NULL), obj(NULL) { }");
if (parameterDeclaration != null && parameterDeclaration.length() > 0) {
out.println(" " + returnConvention[0] + "operator()" + parameterDeclaration + ";");
}
out.println(" " + typeName[0] + "ptr" + typeName[1] + ";");
out.println(" jobject obj; static jmethodID mid;");
out.println("};");
out.println("jmethodID " + instanceTypeName + "::mid = NULL;");
}
out.println();
for (Class c : jclasses) {
Set<String> functionList = virtualFunctions.get(c);
if (functionList == null) {
continue;
}
Set<String> memberList = virtualMembers.get(c);
String[] typeName = cppTypeName(c);
String valueTypeName = valueTypeName(typeName);
String subType = "JavaCPP_" + mangle(valueTypeName);
out.println("class JavaCPP_hidden " + subType + " : public " + valueTypeName + " {");
out.println("public:");
out.println(" jobject obj;");
for (String s : functionList) {
out.println(" static jmethodID " + s + ";");
}
out.println();
for (String s : memberList) {
out.println(s);
}
out.println("};");
for (String s : functionList) {
out.println("jmethodID " + subType + "::" + s + " = NULL;");
}
}
out.println();
for (String s : callbacks) {
out.println(s);
}
out.println();
for (Class c : deallocators) {
String name = "JavaCPP_" + mangle(c.getName());
out.print("static void " + name + "_deallocate(void *p) { ");
if (FunctionPointer.class.isAssignableFrom(c)) {
String typeName = functionClassName(c) + "*";
out.println("JNIEnv *e; bool a = JavaCPP_getEnv(&e); if (e != NULL) e->DeleteWeakGlobalRef((jweak)(("
+ typeName + ")p)->obj); delete (" + typeName + ")p; JavaCPP_detach(a); }");
} else if (virtualFunctions.containsKey(c)) {
String[] typeName = cppTypeName(c);
String valueTypeName = valueTypeName(typeName);
String subType = "JavaCPP_" + mangle(valueTypeName);
out.println("JNIEnv *e; bool a = JavaCPP_getEnv(&e); if (e != NULL) e->DeleteWeakGlobalRef((jweak)(("
+ subType + "*)p)->obj); delete (" + subType + "*)p; JavaCPP_detach(a); }");
} else {
String[] typeName = cppTypeName(c);
out.println("delete (" + typeName[0] + typeName[1] + ")p; }");
}
}
for (Class c : arrayDeallocators) {
String name = "JavaCPP_" + mangle(c.getName());
String[] typeName = cppTypeName(c);
out.println("static void " + name + "_deallocateArray(void* p) { delete[] (" + typeName[0] + typeName[1] + ")p; }");
}
out.println();
out.println("extern \"C\" {");
if (out2 != null) {
out2.println();
out2.println("#ifdef __cplusplus");
out2.println("extern \"C\" {");
out2.println("#endif");
out2.println("JNIIMPORT int JavaCPP_init(int argc, const char *argv[]);");
out.println();
out.println("JNIEXPORT int JavaCPP_init(int argc, const char *argv[]) {");
out.println("#if defined(__ANDROID__) || TARGET_OS_IPHONE");
out.println(" return JNI_OK;");
out.println("#else");
out.println(" if (JavaCPP_vm != NULL) {");
out.println(" return JNI_OK;");
out.println(" }");
out.println(" int err;");
out.println(" JavaVM *vm;");
out.println(" JNIEnv *env;");
out.println(" int nOptions = 1 + (argc > 255 ? 255 : argc);");
out.println(" JavaVMOption options[256] = { { NULL } };");
out.println(" options[0].optionString = (char*)\"-Djava.class.path=" + classPath.replace('\\', '/') + "\";");
out.println(" for (int i = 1; i < nOptions && argv != NULL; i++) {");
out.println(" options[i].optionString = (char*)argv[i - 1];");
out.println(" }");
out.println(" JavaVMInitArgs vm_args = { " + JNI_VERSION + ", nOptions, options };");
out.println(" return (err = JNI_CreateJavaVM(&vm, (void**)&env, &vm_args)) == JNI_OK && vm != NULL && (err = JNI_OnLoad(vm, NULL)) >= 0 ? JNI_OK : err;");
out.println("#endif");
out.println("}");
}
out.println(); // XXX: JNI_OnLoad() should ideally be protected by some mutex
out.println("JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved) {");
out.println(" JNIEnv* env;");
out.println(" if (vm->GetEnv((void**)&env, " + JNI_VERSION + ") != JNI_OK) {");
out.println(" JavaCPP_log(\"Could not get JNIEnv for " + JNI_VERSION + " inside JNI_OnLoad().\");");
out.println(" return JNI_ERR;");
out.println(" }");
out.println(" if (JavaCPP_vm == vm) {");
out.println(" return env->GetVersion();");
out.println(" }");
out.println(" JavaCPP_vm = vm;");
out.println(" JavaCPP_haveAllocObject = env->functions->AllocObject != NULL;");
out.println(" JavaCPP_haveNonvirtual = env->functions->CallNonvirtualVoidMethodA != NULL;");
out.println(" const char* members[" + jclasses.size() + "][" + maxMemberSize + "] = {");
classIterator = jclasses.iterator();
while (classIterator.hasNext()) {
out.print(" { ");
Set<String> m = members.get(classIterator.next());
Iterator<String> memberIterator = m == null ? null : m.iterator();
if (memberIterator == null) {
out.print("NULL");
} else while (memberIterator.hasNext()) {
out.print("\"" + memberIterator.next() + "\"");
if (memberIterator.hasNext()) {
out.print(", ");
}
}
out.print(" }");
if (classIterator.hasNext()) {
out.println(",");
}
}
out.println(" };");
out.println(" int offsets[" + jclasses.size() + "][" + maxMemberSize + "] = {");
classIterator = jclasses.iterator();
while (classIterator.hasNext()) {
out.print(" { ");
Class c = classIterator.next();
Set<String> m = members.get(c);
Iterator<String> memberIterator = m == null ? null : m.iterator();
if (memberIterator == null) {
out.print("-1");
} else while (memberIterator.hasNext()) {
String[] typeName = cppTypeName(c);
String valueTypeName = valueTypeName(typeName);
String memberName = memberIterator.next();
if ("sizeof".equals(memberName)) {
if ("void".equals(valueTypeName)) {
valueTypeName = "void*";
}
out.print("sizeof(" + valueTypeName + ")");