1 from bindingstypes import *
9 def __init__(self, DEBUG: bool, target: Target, **kwargs):
11 self.c_array_class_caches = set()
12 self.c_type_map = dict(
19 self.to_hu_conv_templates = dict(
20 ptr = '{human_type} {var_name}_hu_conv = new {human_type}(null, {var_name});',
21 default = '{human_type} {var_name}_hu_conv = new {human_type}(null, {var_name});'
24 self.bindings_header = """package org.ldk.impl;
25 import org.ldk.enums.*;
27 public class bindings {
28 public static class VecOrSliceDef {
32 public VecOrSliceDef(long dataptr, long datalen, long stride) {
33 this.dataptr = dataptr; this.datalen = datalen; this.stride = stride;
37 System.loadLibrary(\"lightningjni\");
38 init(java.lang.Enum.class, VecOrSliceDef.class);
40 if (!get_lib_version_string().equals(get_ldk_java_bindings_version()))
41 throw new IllegalArgumentException("Compiled LDK library and LDK class failes do not match");
42 // Fetching the LDK versions from C also checks that the header and binaries match
43 get_ldk_c_bindings_version();
46 static native void init(java.lang.Class c, java.lang.Class slicedef);
47 static native void init_class_cache();
48 static native String get_lib_version_string();
50 public static String get_ldk_java_bindings_version() {
51 return "<git_version_ldk_garbagecollected>";
53 public static native String get_ldk_c_bindings_version();
54 public static native String get_ldk_version();
56 public static native boolean deref_bool(long ptr);
57 public static native long deref_long(long ptr);
58 public static native void free_heap_ptr(long ptr);
59 public static native byte[] read_bytes(long ptr, long len);
60 public static native byte[] get_u8_slice_bytes(long slice_ptr);
61 public static native long bytes_to_u8_vec(byte[] bytes);
62 public static native long new_txpointer_copy_data(byte[] txdata);
63 public static native void txpointer_free(long ptr);
64 public static native byte[] txpointer_get_buffer(long ptr);
65 public static native long vec_slice_len(long vec);
66 public static native long new_empty_slice_vec();
70 self.bindings_footer = "}\n"
72 self.util_fn_pfx = """package org.ldk.structs;
73 import org.ldk.impl.bindings;
74 import java.util.Arrays;
75 import org.ldk.enums.*;
77 public class UtilMethods {
79 self.util_fn_sfx = "}"
80 self.common_base = """package org.ldk.structs;
81 import java.util.LinkedList;
84 LinkedList<Object> ptrs_to = new LinkedList();
85 protected CommonBase(long ptr) { this.ptr = ptr; }
86 public long _test_only_get_ptr() { return this.ptr; }
90 self.c_file_pfx = """#include \"org_ldk_impl_bindings.h\"
91 #include <lightning.h>
93 #include <stdatomic.h>
98 if self.target == Target.ANDROID:
99 self.c_file_pfx = self.c_file_pfx + """
100 #include <android/log.h>
101 #define DEBUG_PRINT(...) __android_log_print(ANDROID_LOG_ERROR, "LDK", __VA_ARGS__)
105 static void* redirect_stderr(void* ignored) {
108 dup2(pipes[1], STDERR_FILENO);
110 memset(buf, 0, 8192);
112 while ((len = read(pipes[0], buf, 8191)) > 0) {
113 DEBUG_PRINT("%s\\n", buf);
114 memset(buf, 0, 8192);
116 DEBUG_PRINT("End of stderr???\\n");
119 void __attribute__((constructor)) spawn_stderr_redirection() {
121 pthread_create(&thread, NULL, &redirect_stderr, NULL);
125 self.c_file_pfx = self.c_file_pfx + "#define DEBUG_PRINT(...) fprintf(stderr, __VA_ARGS__)\n"
128 self.c_file_pfx = self.c_file_pfx + """#define MALLOC(a, _) malloc(a)
129 #define FREE(p) if ((uint64_t)(p) > 1024) { free(p); }
130 #define DO_ASSERT(a) (void)(a)
134 self.c_file_pfx = self.c_file_pfx + """#include <assert.h>
135 // Always run a, then assert it is true:
136 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
137 // Assert a is true or do nothing
138 #define CHECK(a) DO_ASSERT(a)
140 void __attribute__((constructor)) debug_log_version() {
141 if (check_get_ldk_version() == NULL)
142 DEBUG_PRINT("LDK version did not match the header we built against\\n");
143 if (check_get_ldk_bindings_version() == NULL)
144 DEBUG_PRINT("LDK C Bindings version did not match the header we built against\\n");
145 DEBUG_PRINT("Loaded LDK-Java Bindings with LDK %s and LDK-C-Bindings %s\\n", check_get_ldk_version(), check_get_ldk_bindings_version());
148 // Running a leak check across all the allocations and frees of the JDK is a mess,
149 // so instead we implement our own naive leak checker here, relying on the -wrap
150 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
151 // and free'd in Rust or C across the generated bindings shared library.
155 if self.target == Target.ANDROID:
156 self.c_file_pfx = self.c_file_pfx + """
160 // Implement the execinfo functions using _Unwind_backtrace. This seems to miss many Rust
161 // symbols, so we only use it on Android, where execinfo.h is unavailable.
163 struct BacktraceState {
167 static _Unwind_Reason_Code unwind_callback(struct _Unwind_Context* context, void* arg) {
168 struct BacktraceState* state = (struct BacktraceState*)arg;
169 uintptr_t pc = _Unwind_GetIP(context);
171 if (state->current == state->end) {
172 return _URC_END_OF_STACK;
174 *state->current++ = (void*)(pc);
177 return _URC_NO_REASON;
180 int backtrace(void** buffer, int max) {
181 struct BacktraceState state = { buffer, buffer + max };
182 _Unwind_Backtrace(unwind_callback, &state);
183 return state.current - buffer;
186 void backtrace_symbols_fd(void ** buffer, int count, int _fd) {
187 for (int idx = 0; idx < count; ++idx) {
189 if (dladdr(buffer[idx], &info) && info.dli_sname) {
190 DEBUG_PRINT("%p: %s", buffer[idx], info.dli_sname);
192 DEBUG_PRINT("%p: ???", buffer[idx]);
198 self.c_file_pfx = self.c_file_pfx + "#include <execinfo.h>\n"
199 self.c_file_pfx = self.c_file_pfx + """
201 static mtx_t allocation_mtx;
203 void __attribute__((constructor)) init_mtx() {
204 DO_ASSERT(mtx_init(&allocation_mtx, mtx_plain) == thrd_success);
208 typedef struct allocation {
209 struct allocation* next;
211 const char* struct_name;
214 unsigned long alloc_len;
216 static allocation* allocation_ll = NULL;
218 void* __real_malloc(size_t len);
219 void* __real_calloc(size_t nmemb, size_t len);
220 static void new_allocation(void* res, const char* struct_name, size_t len) {
221 allocation* new_alloc = __real_malloc(sizeof(allocation));
222 new_alloc->ptr = res;
223 new_alloc->struct_name = struct_name;
224 new_alloc->bt_len = backtrace(new_alloc->bt, BT_MAX);
225 new_alloc->alloc_len = len;
226 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
227 new_alloc->next = allocation_ll;
228 allocation_ll = new_alloc;
229 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
231 static void* MALLOC(size_t len, const char* struct_name) {
232 void* res = __real_malloc(len);
233 new_allocation(res, struct_name, len);
236 void __real_free(void* ptr);
237 static void alloc_freed(void* ptr) {
238 allocation* p = NULL;
239 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
240 allocation* it = allocation_ll;
241 while (it->ptr != ptr) {
242 p = it; it = it->next;
244 DEBUG_PRINT("Tried to free unknown pointer %p at:\\n", ptr);
246 int bt_len = backtrace(bt, BT_MAX);
247 backtrace_symbols_fd(bt, bt_len, STDERR_FILENO);
248 DEBUG_PRINT("\\n\\n");
249 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
250 return; // addrsan should catch malloc-unknown and print more info than we have
253 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
254 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
255 DO_ASSERT(it->ptr == ptr);
258 static void FREE(void* ptr) {
259 if ((uint64_t)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys
264 void* __wrap_malloc(size_t len) {
265 void* res = __real_malloc(len);
266 new_allocation(res, "malloc call", len);
269 void* __wrap_calloc(size_t nmemb, size_t len) {
270 void* res = __real_calloc(nmemb, len);
271 new_allocation(res, "calloc call", len);
274 void __wrap_free(void* ptr) {
275 if (ptr == NULL) return;
280 void* __real_realloc(void* ptr, size_t newlen);
281 void* __wrap_realloc(void* ptr, size_t len) {
282 if (ptr != NULL) alloc_freed(ptr);
283 void* res = __real_realloc(ptr, len);
284 new_allocation(res, "realloc call", len);
287 void __wrap_reallocarray(void* ptr, size_t new_sz) {
288 // Rust doesn't seem to use reallocarray currently
292 void __attribute__((destructor)) check_leaks() {
293 unsigned long alloc_count = 0;
294 unsigned long alloc_size = 0;
295 DEBUG_PRINT("The following LDK-allocated blocks still remain.\\n");
296 DEBUG_PRINT("Note that this is only accurate if System.gc(); System.runFinalization()\\n");
297 DEBUG_PRINT("was called prior to exit after all LDK objects were out of scope.\\n");
298 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
299 DEBUG_PRINT("%s %p (%lu bytes) remains:\\n", a->struct_name, a->ptr, a->alloc_len);
300 backtrace_symbols_fd(a->bt, a->bt_len, STDERR_FILENO);
301 DEBUG_PRINT("\\n\\n");
303 alloc_size += a->alloc_len;
305 DEBUG_PRINT("%lu allocations remained for %lu bytes.\\n", alloc_count, alloc_size);
306 DEBUG_PRINT("Note that this is only accurate if System.gc(); System.runFinalization()\\n");
307 DEBUG_PRINT("was called prior to exit after all LDK objects were out of scope.\\n");
310 self.c_file_pfx = self.c_file_pfx + """
311 static jmethodID ordinal_meth = NULL;
312 static jmethodID slicedef_meth = NULL;
313 static jclass slicedef_cls = NULL;
314 JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class, jclass slicedef_class) {
315 ordinal_meth = (*env)->GetMethodID(env, enum_class, "ordinal", "()I");
316 CHECK(ordinal_meth != NULL);
317 slicedef_meth = (*env)->GetMethodID(env, slicedef_class, "<init>", "(JJJ)V");
318 CHECK(slicedef_meth != NULL);
319 slicedef_cls = (*env)->NewGlobalRef(env, slicedef_class);
320 CHECK(slicedef_cls != NULL);
323 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_deref_1bool (JNIEnv * env, jclass _a, jlong ptr) {
324 return *((bool*)ptr);
326 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_deref_1long (JNIEnv * env, jclass _a, jlong ptr) {
327 return *((long*)ptr);
329 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_free_1heap_1ptr (JNIEnv * env, jclass _a, jlong ptr) {
332 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_read_1bytes (JNIEnv * env, jclass _b, jlong ptr, jlong len) {
333 jbyteArray ret_arr = (*env)->NewByteArray(env, len);
334 (*env)->SetByteArrayRegion(env, ret_arr, 0, len, (unsigned char*)ptr);
337 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes (JNIEnv * env, jclass _b, jlong slice_ptr) {
338 LDKu8slice *slice = (LDKu8slice*)slice_ptr;
339 jbyteArray ret_arr = (*env)->NewByteArray(env, slice->datalen);
340 (*env)->SetByteArrayRegion(env, ret_arr, 0, slice->datalen, slice->data);
343 JNIEXPORT int64_t impl_bindings_bytes_1to_1u8_1vec (JNIEnv * env, jclass _b, jbyteArray bytes) {
344 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8");
345 vec->datalen = (*env)->GetArrayLength(env, bytes);
346 vec->data = (uint8_t*)MALLOC(vec->datalen, "LDKCVec_u8Z Bytes");
347 (*env)->GetByteArrayRegion (env, bytes, 0, vec->datalen, vec->data);
348 return (uint64_t)vec;
350 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_txpointer_1get_1buffer (JNIEnv * env, jclass _b, jlong ptr) {
351 LDKTransaction *txdata = (LDKTransaction*)ptr;
353 slice.data = txdata->data;
354 slice.datalen = txdata->datalen;
355 return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (uint64_t)&slice);
357 JNIEXPORT int64_t JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data (JNIEnv * env, jclass _b, jbyteArray bytes) {
358 LDKTransaction *txdata = (LDKTransaction*)MALLOC(sizeof(LDKTransaction), "LDKTransaction");
359 txdata->datalen = (*env)->GetArrayLength(env, bytes);
360 txdata->data = (uint8_t*)MALLOC(txdata->datalen, "Tx Data Bytes");
361 txdata->data_is_owned = false;
362 (*env)->GetByteArrayRegion (env, bytes, 0, txdata->datalen, txdata->data);
363 return (uint64_t)txdata;
365 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_txpointer_1free (JNIEnv * env, jclass _b, jlong ptr) {
366 LDKTransaction *tx = (LDKTransaction*)ptr;
367 tx->data_is_owned = true;
368 Transaction_free(*tx);
371 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_vec_1slice_1len (JNIEnv * env, jclass _a, jlong ptr) {
372 // Check offsets of a few Vec types are all consistent as we're meant to be generic across types
373 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_SignatureZ, datalen), "Vec<*> needs to be mapped identically");
374 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_MessageSendEventZ, datalen), "Vec<*> needs to be mapped identically");
375 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_EventZ, datalen), "Vec<*> needs to be mapped identically");
376 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_C2Tuple_usizeTransactionZZ, datalen), "Vec<*> needs to be mapped identically");
377 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)ptr;
378 return (uint64_t)vec->datalen;
380 JNIEXPORT int64_t JNICALL Java_org_ldk_impl_bindings_new_1empty_1slice_1vec (JNIEnv * env, jclass _b) {
381 // Check sizes of a few Vec types are all consistent as we're meant to be generic across types
382 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_SignatureZ), "Vec<*> needs to be mapped identically");
383 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_MessageSendEventZ), "Vec<*> needs to be mapped identically");
384 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_EventZ), "Vec<*> needs to be mapped identically");
385 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_C2Tuple_usizeTransactionZZ), "Vec<*> needs to be mapped identically");
386 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "Empty LDKCVec");
389 return (uint64_t)vec;
392 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
393 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
394 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
395 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
397 _Static_assert(sizeof(jlong) == sizeof(int64_t), "We assume that j-types are the same as C types");
398 _Static_assert(sizeof(jbyte) == sizeof(char), "We assume that j-types are the same as C types");
399 _Static_assert(sizeof(void*) <= 8, "Pointers must fit into 64 bits");
401 typedef jlongArray int64_tArray;
402 typedef jbyteArray int8_tArray;
404 static inline jstring str_ref_to_java(JNIEnv *env, const char* chars, size_t len) {
405 // Sadly we need to create a temporary because Java can't accept a char* without a 0-terminator
406 char* conv_buf = MALLOC(len + 1, "str conv buf");
407 memcpy(conv_buf, chars, len);
409 jstring ret = (*env)->NewStringUTF(env, conv_buf);
413 static inline LDKStr java_to_owned_str(JNIEnv *env, jstring str) {
414 uint64_t str_len = (*env)->GetStringUTFLength(env, str);
415 char* newchars = MALLOC(str_len + 1, "String chars");
416 const char* jchars = (*env)->GetStringUTFChars(env, str, NULL);
417 memcpy(newchars, jchars, str_len);
418 newchars[str_len] = 0;
419 (*env)->ReleaseStringUTFChars(env, str, jchars);
423 .chars_is_owned = true
428 JNIEXPORT jstring JNICALL Java_org_ldk_impl_bindings_get_1lib_1version_1string(JNIEnv *env, jclass _c) {
429 return str_ref_to_java(env, "<git_version_ldk_garbagecollected>", strlen("<git_version_ldk_garbagecollected>"));
431 JNIEXPORT jstring JNICALL Java_org_ldk_impl_bindings_get_1ldk_1c_1bindings_1version(JNIEnv *env, jclass _c) {
432 return str_ref_to_java(env, check_get_ldk_bindings_version(), strlen(check_get_ldk_bindings_version()));
434 JNIEXPORT jstring JNICALL Java_org_ldk_impl_bindings_get_1ldk_1version(JNIEnv *env, jclass _c) {
435 return str_ref_to_java(env, check_get_ldk_version(), strlen(check_get_ldk_version()));
439 self.hu_struct_file_prefix = """package org.ldk.structs;
441 import org.ldk.impl.bindings;
442 import org.ldk.enums.*;
443 import org.ldk.util.*;
444 import java.util.Arrays;
447 self.c_fn_ty_pfx = "JNIEXPORT "
448 self.c_fn_args_pfx = "JNIEnv *env, jclass clz"
449 self.file_ext = ".java"
450 self.ptr_c_ty = "int64_t"
451 self.ptr_native_ty = "long"
452 self.result_c_ty = "jclass"
453 self.ptr_arr = "jobjectArray"
454 self.get_native_arr_len_call = ("(*env)->GetArrayLength(env, ", ")")
456 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
457 if ty_info.subty is None or not ty_info.subty.c_ty.endswith("Array"):
458 return "(*env)->ReleasePrimitiveArrayCritical(env, " + arr_var + ", " + arr_ptr_var + ", 0)"
460 def create_native_arr_call(self, arr_len, ty_info):
461 if ty_info.c_ty == "int8_tArray":
462 return "(*env)->NewByteArray(env, " + arr_len + ")"
463 elif ty_info.subty.c_ty.endswith("Array"):
464 clz_var = ty_info.java_fn_ty_arg[1:].replace("[", "arr_of_")
465 self.c_array_class_caches.add(clz_var)
466 return "(*env)->NewObjectArray(env, " + arr_len + ", " + clz_var + "_clz, NULL);\n"
468 return "(*env)->New" + ty_info.java_ty.strip("[]").title() + "Array(env, " + arr_len + ")"
469 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
470 if ty_info.c_ty == "int8_tArray":
471 return ("(*env)->SetByteArrayRegion(env, " + arr_name + ", 0, " + arr_len + ", ", ")")
474 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
475 if ty_info.c_ty == "int8_tArray":
477 return "(*env)->GetByteArrayRegion(env, " + arr_name + ", 0, " + arr_len + ", " + dest_name + ")"
479 return "(*env)->GetByteArrayElements (env, " + arr_name + ", NULL)"
480 elif not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
481 return "(*env)->Get" + ty_info.subty.java_ty.title() + "ArrayElements (env, " + arr_name + ", NULL)"
484 def get_native_arr_elem(self, arr_name, idxc, ty_info):
485 if self.get_native_arr_contents(arr_name, "", "", ty_info, False) is None:
486 return "(*env)->GetObjectArrayElement(env, " + arr_name + ", " + idxc + ")"
488 assert False # Only called if above is None
489 def get_native_arr_ptr_call(self, ty_info):
490 if ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array"):
492 return ("(*env)->GetPrimitiveArrayCritical(env, ", ", NULL)")
493 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
494 if ty_info.subty is None or not ty_info.subty.c_ty.endswith("Array"):
496 return "(*env)->SetObjectArrayElement(env, " + arr_name + ", " + idxc + ", " + entry_access + ")"
497 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
498 if ty_info.c_ty == "int8_tArray":
499 return "(*env)->ReleaseByteArrayElements(env, " + arr_name + ", (int8_t*)" + dest_name + ", 0);"
501 return "(*env)->Release" + ty_info.java_ty.strip("[]").title() + "ArrayElements(env, " + arr_name + ", " + dest_name + ", 0)"
503 def str_ref_to_native_call(self, var_name, str_len):
504 return "str_ref_to_java(env, " + var_name + ", " + str_len + ")"
505 def str_ref_to_c_call(self, var_name):
506 return "java_to_owned_str(env, " + var_name + ")"
508 def c_fn_name_define_pfx(self, fn_name, has_args):
510 return "JNICALL Java_org_ldk_impl_bindings_" + fn_name.replace("_", "_1") + "(JNIEnv *env, jclass clz, "
511 return "JNICALL Java_org_ldk_impl_bindings_" + fn_name.replace("_", "_1") + "(JNIEnv *env, jclass clz"
515 for ty in sorted(self.c_array_class_caches):
516 res = res + "static jclass " + ty + "_clz = NULL;\n"
517 res = res + "JNIEXPORT void Java_org_ldk_impl_bindings_init_1class_1cache(JNIEnv * env, jclass clz) {\n"
518 for ty in sorted(self.c_array_class_caches):
519 res = res + "\t" + ty + "_clz = (*env)->FindClass(env, \"" + ty.replace("arr_of_", "[") + "\");\n"
520 res = res + "\tCHECK(" + ty + "_clz != NULL);\n"
521 res = res + "\t" + ty + "_clz = (*env)->NewGlobalRef(env, " + ty + "_clz);\n"
525 def native_c_unitary_enum_map(self, struct_name, variants, enum_doc_comment):
526 out_java_enum = "package org.ldk.enums;\n\n"
529 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_from_java(" + self.c_fn_args_pfx + ") {\n"
530 out_c = out_c + "\tswitch ((*env)->CallIntMethod(env, clz, ordinal_meth)) {\n"
532 if enum_doc_comment is not None:
533 out_java_enum += "/**\n * " + enum_doc_comment.replace("\n", "\n * ") + "\n */\n"
534 out_java_enum += "public enum " + struct_name + " {\n"
537 out_java_enum = out_java_enum + "\t" + var + ",\n"
538 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
540 out_java_enum = out_java_enum + "\t; static native void init();\n"
541 out_java_enum = out_java_enum + "\tstatic { init(); }\n"
542 out_java_enum = out_java_enum + "}"
543 out_java = out_java + "\tstatic { " + struct_name + ".values(); /* Force enum statics to run */ }\n"
544 out_c = out_c + "\t}\n"
545 out_c = out_c + "\tabort();\n"
546 out_c = out_c + "}\n"
548 out_c = out_c + "static jclass " + struct_name + "_class = NULL;\n"
550 out_c = out_c + "static jfieldID " + struct_name + "_" + var + " = NULL;\n"
551 out_c = out_c + self.c_fn_ty_pfx + "void JNICALL Java_org_ldk_enums_" + struct_name.replace("_", "_1") + "_init (" + self.c_fn_args_pfx + ") {\n"
552 out_c = out_c + "\t" + struct_name + "_class = (*env)->NewGlobalRef(env, clz);\n"
553 out_c = out_c + "\tCHECK(" + struct_name + "_class != NULL);\n"
555 out_c = out_c + "\t" + struct_name + "_" + var + " = (*env)->GetStaticFieldID(env, " + struct_name + "_class, \"" + var + "\", \"Lorg/ldk/enums/" + struct_name + ";\");\n"
556 out_c = out_c + "\tCHECK(" + struct_name + "_" + var + " != NULL);\n"
557 out_c = out_c + "}\n"
558 out_c = out_c + "static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\n"
559 out_c = out_c + "\tswitch (val) {\n"
562 out_c = out_c + "\t\tcase " + var + ":\n"
563 out_c = out_c + "\t\t\treturn (*env)->GetStaticObjectField(env, " + struct_name + "_class, " + struct_name + "_" + var + ");\n"
565 out_c = out_c + "\t\tdefault: abort();\n"
566 out_c = out_c + "\t}\n"
567 out_c = out_c + "}\n\n"
569 return (out_c, out_java_enum, out_java)
571 def c_unitary_enum_to_native_call(self, ty_info):
572 return (ty_info.rust_obj + "_to_java(env, ", ")")
573 def native_unitary_enum_to_c_call(self, ty_info):
574 return (ty_info.rust_obj + "_from_java(env, ", ")")
576 def c_complex_enum_pfx(self, struct_name, variants, init_meth_jty_strs):
579 out_c = out_c + "static jclass " + struct_name + "_" + var + "_class = NULL;\n"
580 out_c = out_c + "static jmethodID " + struct_name + "_" + var + "_meth = NULL;\n"
581 out_c = out_c + self.c_fn_ty_pfx + "void JNICALL Java_org_ldk_impl_bindings_00024" + struct_name.replace("_", "_1") + "_init (" + self.c_fn_args_pfx + ") {\n"
582 for var_name in variants:
583 out_c = out_c + "\t" + struct_name + "_" + var_name + "_class =\n"
584 if self.target == Target.ANDROID:
585 out_c = out_c + "\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"org/ldk/impl/bindings$" + struct_name + "$" + var_name + "\"));\n"
587 out_c = out_c + "\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + struct_name + "$" + var_name + ";\"));\n"
588 out_c = out_c + "\tCHECK(" + struct_name + "_" + var_name + "_class != NULL);\n"
589 out_c = out_c + "\t" + struct_name + "_" + var_name + "_meth = (*env)->GetMethodID(env, " + struct_name + "_" + var_name + "_class, \"<init>\", \"(" + init_meth_jty_strs[var_name] + ")V\");\n"
590 out_c = out_c + "\tCHECK(" + struct_name + "_" + var_name + "_meth != NULL);\n"
591 out_c = out_c + "}\n"
594 def c_complex_enum_pass_ty(self, struct_name):
597 def c_constr_native_complex_enum(self, struct_name, variant, c_params):
598 ret = "(*env)->NewObject(env, " + struct_name + "_" + variant + "_class, " + struct_name + "_" + variant + "_meth"
599 for param in c_params:
600 ret = ret + ", " + param
603 def native_c_map_trait(self, struct_name, field_vars, flattened_field_vars, field_fns, trait_doc_comment):
607 # First generate most of the Java code, note that we need information about java method argument strings for C
608 out_java_trait = out_java_trait + self.hu_struct_file_prefix
609 if trait_doc_comment is not None:
610 out_java_trait += "/**\n * " + trait_doc_comment.replace("\n", "\n * ") + "\n */\n"
611 out_java_trait += "@SuppressWarnings(\"unchecked\") // We correctly assign various generic arrays\n"
612 out_java_trait = out_java_trait + "public class " + struct_name.replace("LDK","") + " extends CommonBase {\n"
613 out_java_trait = out_java_trait + "\tfinal bindings." + struct_name + " bindings_instance;\n"
614 out_java_trait = out_java_trait + "\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }\n"
615 out_java_trait = out_java_trait + "\tprivate " + struct_name.replace("LDK", "") + "(bindings." + struct_name + " arg"
616 for var in flattened_field_vars:
617 if isinstance(var, ConvInfo):
618 out_java_trait = out_java_trait + ", " + var.java_hu_ty + " " + var.arg_name
620 out_java_trait = out_java_trait + ", bindings." + var[0] + " " + var[1]
621 out_java_trait = out_java_trait + ") {\n"
622 out_java_trait = out_java_trait + "\t\tsuper(bindings." + struct_name + "_new(arg"
623 for var in flattened_field_vars:
624 if isinstance(var, ConvInfo):
625 if var.from_hu_conv is not None:
626 out_java_trait = out_java_trait + ", " + var.from_hu_conv[0]
628 out_java_trait = out_java_trait + ", " + var.arg_name
630 out_java_trait = out_java_trait + ", " + var[1]
631 out_java_trait = out_java_trait + "));\n"
632 out_java_trait = out_java_trait + "\t\tthis.ptrs_to.add(arg);\n"
633 for var in flattened_field_vars:
634 if isinstance(var, ConvInfo):
635 if var.from_hu_conv is not None and var.from_hu_conv[1] != "":
636 out_java_trait = out_java_trait + "\t\t" + var.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n"
638 out_java_trait = out_java_trait + "\t\tthis.ptrs_to.add(" + var[1] + ");\n"
639 out_java_trait = out_java_trait + "\t\tthis.bindings_instance = arg;\n"
640 out_java_trait = out_java_trait + "\t}\n"
641 out_java_trait = out_java_trait + "\t@Override @SuppressWarnings(\"deprecation\")\n"
642 out_java_trait = out_java_trait + "\tprotected void finalize() throws Throwable {\n"
643 out_java_trait = out_java_trait + "\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); } super.finalize();\n"
644 out_java_trait = out_java_trait + "\t}\n\n"
646 java_trait_constr = "\tprivate static class " + struct_name + "Holder { " + struct_name.replace("LDK", "") + " held; }\n"
647 java_trait_constr = java_trait_constr + "\tpublic static " + struct_name.replace("LDK", "") + " new_impl(" + struct_name.replace("LDK", "") + "Interface arg"
648 for var in flattened_field_vars:
649 if isinstance(var, ConvInfo):
650 java_trait_constr = java_trait_constr + ", " + var.java_hu_ty + " " + var.arg_name
652 # Ideally we'd be able to take any instance of the interface, but our C code can only represent
653 # Java-implemented version, so we require users pass a Java implementation here :/
654 java_trait_constr = java_trait_constr + ", " + var[0].replace("LDK", "") + "." + var[0].replace("LDK", "") + "Interface " + var[1] + "_impl"
655 java_trait_constr = java_trait_constr + ") {\n\t\tfinal " + struct_name + "Holder impl_holder = new " + struct_name + "Holder();\n"
656 java_trait_constr = java_trait_constr + "\t\timpl_holder.held = new " + struct_name.replace("LDK", "") + "(new bindings." + struct_name + "() {\n"
657 out_java_trait = out_java_trait + "\tpublic static interface " + struct_name.replace("LDK", "") + "Interface {\n"
658 out_java = out_java + "\tpublic interface " + struct_name + " {\n"
660 for fn_line in field_fns:
661 java_meth_descr = "("
662 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
663 out_java = out_java + "\t\t " + fn_line.ret_ty_info.java_ty + " " + fn_line.fn_name + "("
664 java_trait_constr = java_trait_constr + "\t\t\t@Override public " + fn_line.ret_ty_info.java_ty + " " + fn_line.fn_name + "("
665 out_java_trait += "\t\t/**\n\t\t * " + fn_line.docs.replace("\n", "\n\t\t * ") + "\n\t\t */\n"
666 out_java_trait = out_java_trait + "\t\t" + fn_line.ret_ty_info.java_hu_ty + " " + fn_line.fn_name + "("
668 for idx, arg_conv_info in enumerate(fn_line.args_ty):
670 out_java = out_java + ", "
671 java_trait_constr = java_trait_constr + ", "
672 out_java_trait = out_java_trait + ", "
673 out_java = out_java + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
674 out_java_trait = out_java_trait + arg_conv_info.java_hu_ty + " " + arg_conv_info.arg_name
675 java_trait_constr = java_trait_constr + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
676 java_meth_descr = java_meth_descr + arg_conv_info.java_fn_ty_arg
677 java_meth_descr = java_meth_descr + ")" + fn_line.ret_ty_info.java_fn_ty_arg
678 java_meths.append((fn_line.fn_name, java_meth_descr))
680 out_java = out_java + ");\n"
681 out_java_trait = out_java_trait + ");\n"
682 java_trait_constr = java_trait_constr + ") {\n"
684 for arg_info in fn_line.args_ty:
685 if arg_info.to_hu_conv is not None:
686 java_trait_constr = java_trait_constr + "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
688 if fn_line.ret_ty_info.java_ty != "void":
689 java_trait_constr = java_trait_constr + "\t\t\t\t" + fn_line.ret_ty_info.java_hu_ty + " ret = arg." + fn_line.fn_name + "("
691 java_trait_constr = java_trait_constr + "\t\t\t\targ." + fn_line.fn_name + "("
693 for idx, arg_info in enumerate(fn_line.args_ty):
695 java_trait_constr = java_trait_constr + ", "
696 if arg_info.to_hu_conv_name is not None:
697 java_trait_constr = java_trait_constr + arg_info.to_hu_conv_name
699 java_trait_constr = java_trait_constr + arg_info.arg_name
701 java_trait_constr = java_trait_constr + ");\n"
702 if fn_line.ret_ty_info.java_ty != "void":
703 if fn_line.ret_ty_info.from_hu_conv is not None:
704 java_trait_constr = java_trait_constr + "\t\t\t\t" + fn_line.ret_ty_info.java_ty + " result = " + fn_line.ret_ty_info.from_hu_conv[0] + ";\n"
705 if fn_line.ret_ty_info.from_hu_conv[1] != "":
706 java_trait_constr = java_trait_constr + "\t\t\t\t" + fn_line.ret_ty_info.from_hu_conv[1].replace("this", "impl_holder.held") + ";\n"
707 #if fn_line.ret_ty_info.rust_obj in result_types:
708 java_trait_constr = java_trait_constr + "\t\t\t\treturn result;\n"
710 java_trait_constr = java_trait_constr + "\t\t\t\treturn ret;\n"
711 java_trait_constr = java_trait_constr + "\t\t\t}\n"
712 java_trait_constr = java_trait_constr + "\t\t}"
713 for var in field_vars:
714 if isinstance(var, ConvInfo):
715 java_trait_constr = java_trait_constr + ", " + var.arg_name
717 java_trait_constr += ", " + var[1] + ".new_impl(" + var[1] + "_impl"
718 for suparg in var[2]:
719 if isinstance(suparg, ConvInfo):
720 java_trait_constr += ", " + suparg.arg_name
722 java_trait_constr += ", " + suparg[1]
723 java_trait_constr += ").bindings_instance"
724 for suparg in var[2]:
725 if isinstance(suparg, ConvInfo):
726 java_trait_constr += ", " + suparg.arg_name
728 java_trait_constr += ", " + suparg[1]
729 out_java_trait = out_java_trait + "\t}\n"
730 out_java_trait = out_java_trait + java_trait_constr + ");\n\t\treturn impl_holder.held;\n\t}\n"
732 out_java = out_java + "\t}\n"
734 out_java = out_java + "\tpublic static native long " + struct_name + "_new(" + struct_name + " impl"
735 for var in flattened_field_vars:
736 if isinstance(var, ConvInfo):
737 out_java = out_java + ", " + var.java_ty + " " + var.arg_name
739 out_java = out_java + ", " + var[0] + " " + var[1]
740 out_java = out_java + ");\n"
742 # Now that we've written out our java code (and created java_meths), generate C
743 out_c = "typedef struct " + struct_name + "_JCalls {\n"
744 out_c = out_c + "\tatomic_size_t refcnt;\n"
745 out_c = out_c + "\tJavaVM *vm;\n"
746 out_c = out_c + "\tjweak o;\n"
747 for var in flattened_field_vars:
748 if isinstance(var, ConvInfo):
749 # We're a regular ol' field
753 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
755 if fn.fn_name != "free" and fn.fn_name != "clone":
756 out_c = out_c + "\tjmethodID " + fn.fn_name + "_meth;\n"
757 out_c = out_c + "} " + struct_name + "_JCalls;\n"
759 for fn_line in field_fns:
760 if fn_line.fn_name == "free":
761 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
762 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
763 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
764 out_c = out_c + "\t\tJNIEnv *env;\n"
765 out_c = out_c + "\t\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_6) == JNI_OK);\n"
766 out_c = out_c + "\t\t(*env)->DeleteWeakGlobalRef(env, j_calls->o);\n"
767 out_c = out_c + "\t\tFREE(j_calls);\n"
768 out_c = out_c + "\t}\n}\n"
770 for idx, fn_line in enumerate(field_fns):
771 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
772 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
773 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_" + struct_name + "_jcall("
774 if fn_line.self_is_const:
775 out_c = out_c + "const void* this_arg"
777 out_c = out_c + "void* this_arg"
779 for idx, arg in enumerate(fn_line.args_ty):
780 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
782 out_c = out_c + ") {\n"
783 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
784 out_c = out_c + "\tJNIEnv *env;\n"
785 out_c = out_c + "\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_6) == JNI_OK);\n"
787 for arg_info in fn_line.args_ty:
788 if arg_info.ret_conv is not None:
789 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
790 out_c = out_c + arg_info.arg_name
791 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
793 out_c = out_c + "\tjobject obj = (*env)->NewLocalRef(env, j_calls->o);\n\tCHECK(obj != NULL);\n"
794 if fn_line.ret_ty_info.c_ty.endswith("Array"):
795 out_c = out_c + "\t" + fn_line.ret_ty_info.c_ty + " ret = (*env)->CallObjectMethod(env, obj, j_calls->" + fn_line.fn_name + "_meth"
796 elif not fn_line.ret_ty_info.passed_as_ptr:
797 out_c = out_c + "\treturn (*env)->Call" + fn_line.ret_ty_info.java_ty.title() + "Method(env, obj, j_calls->" + fn_line.fn_name + "_meth"
799 out_c = out_c + "\t" + fn_line.ret_ty_info.rust_obj + "* ret = (" + fn_line.ret_ty_info.rust_obj + "*)(*env)->CallLongMethod(env, obj, j_calls->" + fn_line.fn_name + "_meth"
801 for idx, arg_info in enumerate(fn_line.args_ty):
802 if arg_info.ret_conv is not None:
803 out_c = out_c + ", " + arg_info.ret_conv_name
805 out_c = out_c + ", " + arg_info.arg_name
806 out_c = out_c + ");\n"
807 if fn_line.ret_ty_info.arg_conv is not None:
808 out_c = out_c + "\t" + fn_line.ret_ty_info.arg_conv.replace("\n", "\n\t") + "\n\treturn " + fn_line.ret_ty_info.arg_conv_name + ";\n"
810 out_c = out_c + "}\n"
812 # Write out a clone function whether we need one or not, as we use them in moving to rust
813 out_c = out_c + "static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n"
814 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
815 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
816 for var in field_vars:
817 if not isinstance(var, ConvInfo):
818 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
819 out_c = out_c + "\treturn (void*) this_arg;\n"
820 out_c = out_c + "}\n"
822 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (" + self.c_fn_args_pfx + ", jobject o"
823 for var in flattened_field_vars:
824 if isinstance(var, ConvInfo):
825 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
827 out_c = out_c + ", jobject " + var[1]
828 out_c = out_c + ") {\n"
830 out_c = out_c + "\tjclass c = (*env)->GetObjectClass(env, o);\n"
831 out_c = out_c + "\tCHECK(c != NULL);\n"
832 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
833 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
834 out_c = out_c + "\tDO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);\n"
835 out_c = out_c + "\tcalls->o = (*env)->NewWeakGlobalRef(env, o);\n"
837 for (fn_name, java_meth_descr) in java_meths:
838 if fn_name != "free" and fn_name != "clone":
839 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
840 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
842 for var in flattened_field_vars:
843 if isinstance(var, ConvInfo) and var.arg_conv is not None:
844 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
845 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
846 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
847 for fn_line in field_fns:
848 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
849 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_" + struct_name + "_jcall,\n"
850 elif fn_line.fn_name == "free":
851 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
853 out_c = out_c + "\t\t.clone = " + struct_name + "_JCalls_clone,\n"
854 for var in field_vars:
855 if isinstance(var, ConvInfo):
856 if var.arg_conv_name is not None:
857 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
858 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
860 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
861 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
863 out_c += "\t\t." + var[1] + " = " + var[0] + "_init(env, clz, " + var[1]
864 for suparg in var[2]:
865 if isinstance(suparg, ConvInfo):
866 out_c = out_c + ", " + suparg.arg_name
868 out_c = out_c + ", " + suparg[1]
870 out_c = out_c + "\t};\n"
871 for var in flattened_field_vars:
872 if not isinstance(var, ConvInfo):
873 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
874 out_c = out_c + "\treturn ret;\n"
875 out_c = out_c + "}\n"
877 out_c = out_c + self.c_fn_ty_pfx + "int64_t " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "jobject o"
878 for var in flattened_field_vars:
879 if isinstance(var, ConvInfo):
880 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
882 out_c = out_c + ", jobject " + var[1]
883 out_c = out_c + ") {\n"
884 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
885 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(env, clz, o"
886 for var in flattened_field_vars:
887 if isinstance(var, ConvInfo):
888 out_c = out_c + ", " + var.arg_name
890 out_c = out_c + ", " + var[1]
891 out_c = out_c + ");\n"
892 out_c = out_c + "\treturn (uint64_t)res_ptr;\n"
893 out_c = out_c + "}\n"
895 return (out_java, out_java_trait, out_c)
897 def trait_struct_inc_refcnt(self, ty_info):
898 base_conv = "\nif (" + ty_info.var_name + "_conv.free == " + ty_info.rust_obj + "_JCalls_free) {\n"
899 base_conv = base_conv + "\t// If this_arg is a JCalls struct, then we need to increment the refcnt in it.\n"
900 base_conv = base_conv + "\t" + ty_info.rust_obj + "_JCalls_clone(" + ty_info.var_name + "_conv.this_arg);\n}"
903 def map_complex_enum(self, struct_name, variant_list, camel_to_snake, enum_doc_comment):
904 java_hu_type = struct_name.replace("LDK", "").replace("COption", "Option")
909 out_java_enum += (self.hu_struct_file_prefix)
910 out_java_enum += "\n/**\n * " + enum_doc_comment.replace("\n", "\n * ") + "\n */\n"
911 out_java_enum += "@SuppressWarnings(\"unchecked\") // We correctly assign various generic arrays\n"
912 out_java_enum += ("public class " + java_hu_type + " extends CommonBase {\n")
913 out_java_enum += ("\tprivate " + java_hu_type + "(Object _dummy, long ptr) { super(ptr); }\n")
914 out_java_enum += ("\t@Override @SuppressWarnings(\"deprecation\")\n")
915 out_java_enum += ("\tprotected void finalize() throws Throwable {\n")
916 out_java_enum += ("\t\tsuper.finalize();\n")
917 out_java_enum += ("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK", "") + "_free(ptr); }\n")
918 out_java_enum += ("\t}\n")
919 out_java_enum += ("\tstatic " + java_hu_type + " constr_from_ptr(long ptr) {\n")
920 out_java_enum += ("\t\tbindings." + struct_name + " raw_val = bindings." + struct_name + "_ref_from_ptr(ptr);\n")
921 java_hu_subclasses = ""
923 init_meth_jty_strs = {}
925 out_java += ("\tpublic static class " + struct_name + " {\n")
926 out_java += ("\t\tprivate " + struct_name + "() {}\n")
927 for var in variant_list:
928 out_java += ("\t\tpublic final static class " + var.var_name + " extends " + struct_name + " {\n")
929 java_hu_subclasses = java_hu_subclasses + "\tpublic final static class " + var.var_name + " extends " + java_hu_type + " {\n"
930 out_java_enum += ("\t\tif (raw_val.getClass() == bindings." + struct_name + "." + var.var_name + ".class) {\n")
931 out_java_enum += ("\t\t\treturn new " + var.var_name + "(ptr, (bindings." + struct_name + "." + var.var_name + ")raw_val);\n")
932 init_meth_jty_str = ""
933 init_meth_params = ""
936 for idx, field_ty in enumerate(var.fields):
937 out_java += ("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.arg_name + ";\n")
938 java_hu_subclasses = java_hu_subclasses + "\t\tpublic final " + field_ty.java_hu_ty + " " + field_ty.arg_name + ";\n"
939 if field_ty.to_hu_conv is not None:
940 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.java_ty + " " + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
941 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
942 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
944 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
945 init_meth_jty_str = init_meth_jty_str + field_ty.java_fn_ty_arg
947 init_meth_params = init_meth_params + ", "
948 init_meth_params = init_meth_params + field_ty.java_ty + " " + field_ty.arg_name
949 init_meth_body = init_meth_body + "this." + field_ty.arg_name + " = " + field_ty.arg_name + "; "
950 out_java += ("\t\t\t" + var.var_name + "(" + init_meth_params + ") { ")
951 out_java += (init_meth_body)
953 out_java += ("\t\t}\n")
954 out_java_enum += ("\t\t}\n")
955 java_hu_subclasses = java_hu_subclasses + "\t\tprivate " + var.var_name + "(long ptr, bindings." + struct_name + "." + var.var_name + " obj) {\n\t\t\tsuper(null, ptr);\n"
956 java_hu_subclasses = java_hu_subclasses + hu_conv_body
957 java_hu_subclasses = java_hu_subclasses + "\t\t}\n\t}\n"
958 init_meth_jty_strs[var.var_name] = init_meth_jty_str
959 out_java += ("\t\tstatic native void init();\n")
960 out_java += ("\t}\n")
961 out_java_enum += ("\t\tassert false; return null; // Unreachable without extending the (internal) bindings interface\n\t}\n\n")
962 out_java_enum += (java_hu_subclasses)
963 out_java += ("\tstatic { " + struct_name + ".init(); }\n")
964 out_java += ("\tpublic static native " + struct_name + " " + struct_name + "_ref_from_ptr(long ptr);\n");
966 out_c += (self.c_complex_enum_pfx(struct_name, [x.var_name for x in variant_list], init_meth_jty_strs))
968 out_c += (self.c_fn_ty_pfx + self.c_complex_enum_pass_ty(struct_name) + " " + self.c_fn_name_define_pfx(struct_name + "_ref_from_ptr", True) + self.ptr_c_ty + " ptr) {\n")
969 out_c += ("\t" + struct_name + " *obj = (" + struct_name + "*)(ptr & ~1);\n")
970 out_c += ("\tswitch(obj->tag) {\n")
971 for var in variant_list:
972 out_c += ("\t\tcase " + struct_name + "_" + var.var_name + ": {\n")
974 for idx, field_map in enumerate(var.fields):
975 if field_map.ret_conv is not None:
976 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
977 if var.tuple_variant:
978 out_c += "obj->" + camel_to_snake(var.var_name)
980 out_c += "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name
981 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
982 c_params.append(field_map.ret_conv_name)
984 if var.tuple_variant:
985 c_params.append("obj->" + camel_to_snake(var.var_name))
987 c_params.append("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
988 out_c += ("\t\t\treturn " + self.c_constr_native_complex_enum(struct_name, var.var_name, c_params) + ";\n")
990 out_c += ("\t\tdefault: abort();\n")
991 out_c += ("\t}\n}\n")
992 return (out_java, out_java_enum, out_c)
994 def map_opaque_struct(self, struct_name, struct_doc_comment):
995 out_opaque_struct_human = ""
996 out_opaque_struct_human += self.hu_struct_file_prefix
997 out_opaque_struct_human += "\n/**\n * " + struct_doc_comment.replace("\n", "\n * ") + "\n */\n"
998 out_opaque_struct_human += "@SuppressWarnings(\"unchecked\") // We correctly assign various generic arrays\n"
999 out_opaque_struct_human += ("public class " + struct_name.replace("LDK","") + " extends CommonBase")
1000 if struct_name.startswith("LDKLocked"):
1001 out_opaque_struct_human += (" implements AutoCloseable")
1002 out_opaque_struct_human += (" {\n")
1003 out_opaque_struct_human += ("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); }\n")
1004 if struct_name.startswith("LDKLocked"):
1005 out_opaque_struct_human += ("\t@Override public void close() {\n")
1007 out_opaque_struct_human += ("\t@Override @SuppressWarnings(\"deprecation\")\n")
1008 out_opaque_struct_human += ("\tprotected void finalize() throws Throwable {\n")
1009 out_opaque_struct_human += ("\t\tsuper.finalize();\n")
1010 out_opaque_struct_human += ("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); }\n")
1011 out_opaque_struct_human += ("\t}\n\n")
1012 return out_opaque_struct_human
1015 def map_function(self, argument_types, c_call_string, method_name, return_type_info, struct_meth, default_constructor_args, takes_self, args_known, type_mapping_generator, doc_comment):
1018 out_java_struct = None
1020 out_java += ("\tpublic static native ")
1021 out_c += (self.c_fn_ty_pfx)
1022 out_c += (return_type_info.c_ty)
1023 out_java += (return_type_info.java_ty)
1024 if return_type_info.ret_conv is not None:
1025 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
1026 out_java += (" " + method_name + "(")
1027 have_args = len(argument_types) > 1 or (len(argument_types) > 0 and argument_types[0].c_ty != "void")
1028 out_c += (" " + self.c_fn_name_define_pfx(method_name, have_args))
1030 for idx, arg_conv_info in enumerate(argument_types):
1034 if arg_conv_info.c_ty != "void":
1035 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
1036 out_java += (arg_conv_info.java_ty + " " + arg_conv_info.arg_name)
1038 out_java_struct = ""
1040 out_java_struct += ("\t// Skipped " + method_name + "\n")
1042 meth_n = method_name[len(struct_meth) + 1:].strip("_")
1043 if doc_comment is not None:
1044 out_java_struct += "\t/**\n\t * " + doc_comment.replace("\n", "\n\t * ") + "\n\t */\n"
1046 out_java_struct += (
1047 "\tpublic static " + return_type_info.java_hu_ty + " constructor_" + meth_n + "(")
1049 out_java_struct += ("\tpublic " + return_type_info.java_hu_ty + " " + meth_n + "(")
1050 for idx, arg in enumerate(argument_types):
1052 if not takes_self or idx > 1:
1053 out_java_struct += (", ")
1056 if arg.java_ty != "void":
1057 if arg.arg_name in default_constructor_args:
1058 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
1059 if explode_idx != 0:
1060 out_java_struct += (", ")
1061 out_java_struct += (
1062 explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name)
1064 out_java_struct += (arg.java_hu_ty + " " + arg.arg_name)
1065 out_java += (");\n")
1067 if out_java_struct is not None:
1068 out_java_struct += (") {\n")
1069 for info in argument_types:
1070 if info.arg_conv is not None:
1071 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
1072 if return_type_info.ret_conv is not None:
1073 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
1074 elif return_type_info.c_ty != "void":
1075 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
1078 if c_call_string is None:
1079 out_c += (method_name + "(")
1081 out_c += (c_call_string)
1082 for idx, info in enumerate(argument_types):
1083 if info.arg_conv_name is not None:
1086 elif c_call_string is not None:
1088 out_c += (info.arg_conv_name)
1090 if return_type_info.ret_conv is not None:
1091 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
1094 for info in argument_types:
1095 if info.arg_conv_cleanup is not None:
1096 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
1097 if return_type_info.ret_conv is not None:
1098 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
1099 elif return_type_info.c_ty != "void":
1100 out_c += ("\n\treturn ret_val;")
1101 out_c += ("\n}\n\n")
1104 out_java_struct += ("\t\t")
1105 if return_type_info.java_ty != "void":
1106 out_java_struct += (return_type_info.java_ty + " ret = ")
1107 out_java_struct += ("bindings." + method_name + "(")
1108 for idx, info in enumerate(argument_types):
1110 out_java_struct += (", ")
1111 if idx == 0 and takes_self:
1112 out_java_struct += ("this.ptr")
1113 elif info.arg_name in default_constructor_args:
1114 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
1115 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
1116 if explode_idx != 0:
1117 out_java_struct += (", ")
1118 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1119 if explode_arg.from_hu_conv is not None:
1120 out_java_struct += (
1121 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
1123 out_java_struct += (expl_arg_name)
1124 out_java_struct += (")")
1125 elif info.from_hu_conv is not None:
1126 out_java_struct += (info.from_hu_conv[0])
1128 out_java_struct += (info.arg_name)
1129 out_java_struct += (");\n")
1130 if return_type_info.to_hu_conv is not None:
1132 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
1133 return_type_info.to_hu_conv_name) + "\n")
1135 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
1137 for idx, info in enumerate(argument_types):
1138 if idx == 0 and takes_self:
1140 elif info.arg_name in default_constructor_args:
1141 for explode_arg in default_constructor_args[info.arg_name]:
1142 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1143 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
1144 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
1145 expl_arg_name).replace(
1146 "this", return_type_info.to_hu_conv_name) + ";\n")
1147 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
1148 if not takes_self and return_type_info.to_hu_conv_name is not None:
1149 out_java_struct += (
1150 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name).replace("\n", "\n\t\t") + ";\n")
1152 out_java_struct += ("\t\t" + info.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n")
1154 if return_type_info.to_hu_conv_name is not None:
1155 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
1156 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
1157 out_java_struct += ("\t\treturn ret;\n")
1158 out_java_struct += ("\t}\n\n")
1160 return (out_java, out_c, out_java_struct)