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);
41 static native void init(java.lang.Class c, java.lang.Class slicedef);
42 static native void init_class_cache();
44 public static native boolean deref_bool(long ptr);
45 public static native long deref_long(long ptr);
46 public static native void free_heap_ptr(long ptr);
47 public static native byte[] read_bytes(long ptr, long len);
48 public static native byte[] get_u8_slice_bytes(long slice_ptr);
49 public static native long bytes_to_u8_vec(byte[] bytes);
50 public static native long new_txpointer_copy_data(byte[] txdata);
51 public static native void txpointer_free(long ptr);
52 public static native byte[] txpointer_get_buffer(long ptr);
53 public static native long vec_slice_len(long vec);
54 public static native long new_empty_slice_vec();
58 self.bindings_footer = "}\n"
60 self.util_fn_pfx = """package org.ldk.structs;
61 import org.ldk.impl.bindings;
62 import java.util.Arrays;
64 public class UtilMethods {
66 self.util_fn_sfx = "}"
67 self.common_base = """package org.ldk.structs;
68 import java.util.LinkedList;
71 LinkedList<Object> ptrs_to = new LinkedList();
72 protected CommonBase(long ptr) { this.ptr = ptr; }
73 public long _test_only_get_ptr() { return this.ptr; }
77 self.c_file_pfx = """#include \"org_ldk_impl_bindings.h\"
78 #include <rust_types.h>
79 #include <lightning.h>
81 #include <stdatomic.h>
87 self.c_file_pfx = self.c_file_pfx + """#define MALLOC(a, _) malloc(a)
88 #define FREE(p) if ((long)(p) > 1024) { free(p); }
89 #define DO_ASSERT(a) (void)(a)
93 self.c_file_pfx = self.c_file_pfx + """#include <assert.h>
94 // Always run a, then assert it is true:
95 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
96 // Assert a is true or do nothing
97 #define CHECK(a) DO_ASSERT(a)
99 // Running a leak check across all the allocations and frees of the JDK is a mess,
100 // so instead we implement our own naive leak checker here, relying on the -wrap
101 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
102 // and free'd in Rust or C across the generated bindings shared library.
104 #include <execinfo.h>
106 static mtx_t allocation_mtx;
108 void __attribute__((constructor)) init_mtx() {
109 DO_ASSERT(mtx_init(&allocation_mtx, mtx_plain) == thrd_success);
113 typedef struct allocation {
114 struct allocation* next;
116 const char* struct_name;
121 static allocation* allocation_ll = NULL;
123 void* __real_malloc(size_t len);
124 void* __real_calloc(size_t nmemb, size_t len);
125 static void new_allocation(void* res, const char* struct_name, size_t len) {
126 allocation* new_alloc = __real_malloc(sizeof(allocation));
127 new_alloc->ptr = res;
128 new_alloc->struct_name = struct_name;
129 new_alloc->bt_len = backtrace(new_alloc->bt, BT_MAX);
130 new_alloc->alloc_len = len;
131 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
132 new_alloc->next = allocation_ll;
133 allocation_ll = new_alloc;
134 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
136 static void* MALLOC(size_t len, const char* struct_name) {
137 void* res = __real_malloc(len);
138 new_allocation(res, struct_name, len);
141 void __real_free(void* ptr);
142 static void alloc_freed(void* ptr) {
143 allocation* p = NULL;
144 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
145 allocation* it = allocation_ll;
146 while (it->ptr != ptr) {
147 p = it; it = it->next;
149 fprintf(stderr, "Tried to free unknown pointer %p at:\\n", ptr);
151 int bt_len = backtrace(bt, BT_MAX);
152 backtrace_symbols_fd(bt, bt_len, STDERR_FILENO);
153 fprintf(stderr, "\\n\\n");
154 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
155 return; // addrsan should catch malloc-unknown and print more info than we have
158 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
159 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
160 DO_ASSERT(it->ptr == ptr);
163 static void FREE(void* ptr) {
164 if ((long)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys
169 void* __wrap_malloc(size_t len) {
170 void* res = __real_malloc(len);
171 new_allocation(res, "malloc call", len);
174 void* __wrap_calloc(size_t nmemb, size_t len) {
175 void* res = __real_calloc(nmemb, len);
176 new_allocation(res, "calloc call", len);
179 void __wrap_free(void* ptr) {
180 if (ptr == NULL) return;
185 void* __real_realloc(void* ptr, size_t newlen);
186 void* __wrap_realloc(void* ptr, size_t len) {
187 if (ptr != NULL) alloc_freed(ptr);
188 void* res = __real_realloc(ptr, len);
189 new_allocation(res, "realloc call", len);
192 void __wrap_reallocarray(void* ptr, size_t new_sz) {
193 // Rust doesn't seem to use reallocarray currently
197 void __attribute__((destructor)) check_leaks() {
198 size_t alloc_count = 0;
199 size_t alloc_size = 0;
200 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
201 fprintf(stderr, "%s %p remains:\\n", a->struct_name, a->ptr);
202 backtrace_symbols_fd(a->bt, a->bt_len, STDERR_FILENO);
203 fprintf(stderr, "\\n\\n");
205 alloc_size += a->alloc_len;
207 fprintf(stderr, "%lu allocations remained for %lu bytes.\\n", alloc_count, alloc_size);
208 DO_ASSERT(allocation_ll == NULL);
211 self.c_file_pfx = self.c_file_pfx + """
212 static jmethodID ordinal_meth = NULL;
213 static jmethodID slicedef_meth = NULL;
214 static jclass slicedef_cls = NULL;
215 JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class, jclass slicedef_class) {
216 ordinal_meth = (*env)->GetMethodID(env, enum_class, "ordinal", "()I");
217 CHECK(ordinal_meth != NULL);
218 slicedef_meth = (*env)->GetMethodID(env, slicedef_class, "<init>", "(JJJ)V");
219 CHECK(slicedef_meth != NULL);
220 slicedef_cls = (*env)->NewGlobalRef(env, slicedef_class);
221 CHECK(slicedef_cls != NULL);
224 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_deref_1bool (JNIEnv * env, jclass _a, jlong ptr) {
225 return *((bool*)ptr);
227 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_deref_1long (JNIEnv * env, jclass _a, jlong ptr) {
228 return *((long*)ptr);
230 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_free_1heap_1ptr (JNIEnv * env, jclass _a, jlong ptr) {
233 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_read_1bytes (JNIEnv * env, jclass _b, jlong ptr, jlong len) {
234 jbyteArray ret_arr = (*env)->NewByteArray(env, len);
235 (*env)->SetByteArrayRegion(env, ret_arr, 0, len, (unsigned char*)ptr);
238 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes (JNIEnv * env, jclass _b, jlong slice_ptr) {
239 LDKu8slice *slice = (LDKu8slice*)slice_ptr;
240 jbyteArray ret_arr = (*env)->NewByteArray(env, slice->datalen);
241 (*env)->SetByteArrayRegion(env, ret_arr, 0, slice->datalen, slice->data);
244 JNIEXPORT int64_t impl_bindings_bytes_1to_1u8_1vec (JNIEnv * env, jclass _b, jbyteArray bytes) {
245 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8");
246 vec->datalen = (*env)->GetArrayLength(env, bytes);
247 vec->data = (uint8_t*)MALLOC(vec->datalen, "LDKCVec_u8Z Bytes");
248 (*env)->GetByteArrayRegion (env, bytes, 0, vec->datalen, vec->data);
251 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_txpointer_1get_1buffer (JNIEnv * env, jclass _b, jlong ptr) {
252 LDKTransaction *txdata = (LDKTransaction*)ptr;
254 slice.data = txdata->data;
255 slice.datalen = txdata->datalen;
256 return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (long)&slice);
258 JNIEXPORT int64_t JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data (JNIEnv * env, jclass _b, jbyteArray bytes) {
259 LDKTransaction *txdata = (LDKTransaction*)MALLOC(sizeof(LDKTransaction), "LDKTransaction");
260 txdata->datalen = (*env)->GetArrayLength(env, bytes);
261 txdata->data = (uint8_t*)MALLOC(txdata->datalen, "Tx Data Bytes");
262 txdata->data_is_owned = false;
263 (*env)->GetByteArrayRegion (env, bytes, 0, txdata->datalen, txdata->data);
266 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_txpointer_1free (JNIEnv * env, jclass _b, jlong ptr) {
267 LDKTransaction *tx = (LDKTransaction*)ptr;
268 tx->data_is_owned = true;
269 Transaction_free(*tx);
272 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_vec_1slice_1len (JNIEnv * env, jclass _a, jlong ptr) {
273 // Check offsets of a few Vec types are all consistent as we're meant to be generic across types
274 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_SignatureZ, datalen), "Vec<*> needs to be mapped identically");
275 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_MessageSendEventZ, datalen), "Vec<*> needs to be mapped identically");
276 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_EventZ, datalen), "Vec<*> needs to be mapped identically");
277 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_C2Tuple_usizeTransactionZZ, datalen), "Vec<*> needs to be mapped identically");
278 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)ptr;
279 return (long)vec->datalen;
281 JNIEXPORT int64_t JNICALL Java_org_ldk_impl_bindings_new_1empty_1slice_1vec (JNIEnv * env, jclass _b) {
282 // Check sizes of a few Vec types are all consistent as we're meant to be generic across types
283 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_SignatureZ), "Vec<*> needs to be mapped identically");
284 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_MessageSendEventZ), "Vec<*> needs to be mapped identically");
285 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_EventZ), "Vec<*> needs to be mapped identically");
286 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_C2Tuple_usizeTransactionZZ), "Vec<*> needs to be mapped identically");
287 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "Empty LDKCVec");
293 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
294 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
295 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
296 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
298 _Static_assert(sizeof(jlong) == sizeof(int64_t), "We assume that j-types are the same as C types");
299 _Static_assert(sizeof(jbyte) == sizeof(char), "We assume that j-types are the same as C types");
300 _Static_assert(sizeof(void*) <= 8, "Pointers must fit into 64 bits");
302 typedef jlongArray int64_tArray;
303 typedef jbyteArray int8_tArray;
305 static inline jstring str_ref_to_java(JNIEnv *env, const char* chars, size_t len) {
306 // Sadly we need to create a temporary because Java can't accept a char* without a 0-terminator
307 char* err_buf = MALLOC(len + 1, "str conv buf");
308 memcpy(err_buf, chars, len);
310 jstring err_conv = (*env)->NewStringUTF(env, chars);
316 self.hu_struct_file_prefix = """package org.ldk.structs;
318 import org.ldk.impl.bindings;
319 import org.ldk.enums.*;
320 import org.ldk.util.*;
321 import java.util.Arrays;
323 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
325 self.c_fn_ty_pfx = "JNIEXPORT "
326 self.c_fn_args_pfx = "JNIEnv *env, jclass clz"
327 self.file_ext = ".java"
328 self.ptr_c_ty = "int64_t"
329 self.ptr_native_ty = "long"
330 self.result_c_ty = "jclass"
331 self.ptr_arr = "jobjectArray"
332 self.get_native_arr_len_call = ("(*env)->GetArrayLength(env, ", ")")
334 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
335 if ty_info.subty is None or not ty_info.subty.c_ty.endswith("Array"):
336 return "(*env)->ReleasePrimitiveArrayCritical(env, " + arr_var + ", " + arr_ptr_var + ", 0)"
338 def create_native_arr_call(self, arr_len, ty_info):
339 if ty_info.c_ty == "int8_tArray":
340 return "(*env)->NewByteArray(env, " + arr_len + ")"
341 elif ty_info.subty.c_ty.endswith("Array"):
342 clz_var = ty_info.java_fn_ty_arg[1:].replace("[", "arr_of_")
343 self.c_array_class_caches.add(clz_var)
344 return "(*env)->NewObjectArray(env, " + arr_len + ", " + clz_var + "_clz, NULL);\n"
346 return "(*env)->New" + ty_info.java_ty.strip("[]").title() + "Array(env, " + arr_len + ")"
347 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
348 if ty_info.c_ty == "int8_tArray":
349 return ("(*env)->SetByteArrayRegion(env, " + arr_name + ", 0, " + arr_len + ", ", ")")
352 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
353 if ty_info.c_ty == "int8_tArray":
355 return "(*env)->GetByteArrayRegion(env, " + arr_name + ", 0, " + arr_len + ", " + dest_name + ")"
357 return "(*env)->GetByteArrayElements (env, " + arr_name + ", NULL)"
358 elif not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
359 return "(*env)->Get" + ty_info.subty.java_ty.title() + "ArrayElements (env, " + arr_name + ", NULL)"
362 def get_native_arr_elem(self, arr_name, idxc, ty_info):
363 if self.get_native_arr_contents(arr_name, "", "", ty_info, False) is None:
364 return "(*env)->GetObjectArrayElement(env, " + arr_name + ", " + idxc + ")"
366 assert False # Only called if above is None
367 def get_native_arr_ptr_call(self, ty_info):
368 if ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array"):
370 return ("(*env)->GetPrimitiveArrayCritical(env, ", ", NULL)")
371 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
372 if ty_info.subty is None or not ty_info.subty.c_ty.endswith("Array"):
374 return "(*env)->SetObjectArrayElement(env, " + arr_name + ", " + idxc + ", " + entry_access + ")"
375 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
376 if ty_info.c_ty == "int8_tArray":
377 return "(*env)->ReleaseByteArrayElements(env, " + arr_name + ", (int8_t*)" + dest_name + ", 0);"
379 return "(*env)->Release" + ty_info.java_ty.strip("[]").title() + "ArrayElements(env, " + arr_name + ", " + dest_name + ", 0)"
381 def str_ref_to_c_call(self, var_name, str_len):
382 return "str_ref_to_java(env, " + var_name + ", " + str_len + ")"
384 def c_fn_name_define_pfx(self, fn_name, has_args):
386 return "JNICALL Java_org_ldk_impl_bindings_" + fn_name.replace("_", "_1") + "(JNIEnv *env, jclass clz, "
387 return "JNICALL Java_org_ldk_impl_bindings_" + fn_name.replace("_", "_1") + "(JNIEnv *env, jclass clz"
391 for ty in self.c_array_class_caches:
392 res = res + "static jclass " + ty + "_clz = NULL;\n"
393 res = res + "JNIEXPORT void Java_org_ldk_impl_bindings_init_1class_1cache(JNIEnv * env, jclass clz) {\n"
394 for ty in self.c_array_class_caches:
395 res = res + "\t" + ty + "_clz = (*env)->FindClass(env, \"" + ty.replace("arr_of_", "[") + "\");\n"
396 res = res + "\tCHECK(" + ty + "_clz != NULL);\n"
397 res = res + "\t" + ty + "_clz = (*env)->NewGlobalRef(env, " + ty + "_clz);\n"
401 def native_c_unitary_enum_map(self, struct_name, variants):
402 out_java_enum = "package org.ldk.enums;\n\n"
405 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_from_java(" + self.c_fn_args_pfx + ") {\n"
406 out_c = out_c + "\tswitch ((*env)->CallIntMethod(env, clz, ordinal_meth)) {\n"
408 out_java_enum = out_java_enum + "public enum " + struct_name + " {\n"
411 out_java_enum = out_java_enum + "\t" + var + ",\n"
412 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
414 out_java_enum = out_java_enum + "\t; static native void init();\n"
415 out_java_enum = out_java_enum + "\tstatic { init(); }\n"
416 out_java_enum = out_java_enum + "}"
417 out_java = out_java + "\tstatic { " + struct_name + ".values(); /* Force enum statics to run */ }\n"
418 out_c = out_c + "\t}\n"
419 out_c = out_c + "\tabort();\n"
420 out_c = out_c + "}\n"
422 out_c = out_c + "static jclass " + struct_name + "_class = NULL;\n"
424 out_c = out_c + "static jfieldID " + struct_name + "_" + var + " = NULL;\n"
425 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"
426 out_c = out_c + "\t" + struct_name + "_class = (*env)->NewGlobalRef(env, clz);\n"
427 out_c = out_c + "\tCHECK(" + struct_name + "_class != NULL);\n"
429 out_c = out_c + "\t" + struct_name + "_" + var + " = (*env)->GetStaticFieldID(env, " + struct_name + "_class, \"" + var + "\", \"Lorg/ldk/enums/" + struct_name + ";\");\n"
430 out_c = out_c + "\tCHECK(" + struct_name + "_" + var + " != NULL);\n"
431 out_c = out_c + "}\n"
432 out_c = out_c + "static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\n"
433 out_c = out_c + "\tswitch (val) {\n"
436 out_c = out_c + "\t\tcase " + var + ":\n"
437 out_c = out_c + "\t\t\treturn (*env)->GetStaticObjectField(env, " + struct_name + "_class, " + struct_name + "_" + var + ");\n"
439 out_c = out_c + "\t\tdefault: abort();\n"
440 out_c = out_c + "\t}\n"
441 out_c = out_c + "}\n\n"
443 return (out_c, out_java_enum, out_java)
445 def c_unitary_enum_to_native_call(self, ty_info):
446 return (ty_info.rust_obj + "_to_java(env, ", ")")
447 def native_unitary_enum_to_c_call(self, ty_info):
448 return (ty_info.rust_obj + "_from_java(env, ", ")")
450 def c_complex_enum_pfx(self, struct_name, variants, init_meth_jty_strs):
453 out_c = out_c + "static jclass " + struct_name + "_" + var + "_class = NULL;\n"
454 out_c = out_c + "static jmethodID " + struct_name + "_" + var + "_meth = NULL;\n"
455 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"
456 for var_name in variants:
457 out_c = out_c + "\t" + struct_name + "_" + var_name + "_class =\n"
458 if self.target == Target.ANDROID:
459 out_c = out_c + "\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"org/ldk/impl/bindings$" + struct_name + "$" + var_name + "\"));\n"
461 out_c = out_c + "\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + struct_name + "$" + var_name + ";\"));\n"
462 out_c = out_c + "\tCHECK(" + struct_name + "_" + var_name + "_class != NULL);\n"
463 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"
464 out_c = out_c + "\tCHECK(" + struct_name + "_" + var_name + "_meth != NULL);\n"
465 out_c = out_c + "}\n"
468 def c_complex_enum_pass_ty(self, struct_name):
471 def c_constr_native_complex_enum(self, struct_name, variant, c_params):
472 ret = "(*env)->NewObject(env, " + struct_name + "_" + variant + "_class, " + struct_name + "_" + variant + "_meth"
473 for param in c_params:
474 ret = ret + ", " + param
477 def native_c_map_trait(self, struct_name, field_vars, field_fns):
481 # First generate most of the Java code, note that we need information about java method argument strings for C
482 out_java_trait = out_java_trait + self.hu_struct_file_prefix
483 out_java_trait = out_java_trait + "public class " + struct_name.replace("LDK","") + " extends CommonBase {\n"
484 out_java_trait = out_java_trait + "\tfinal bindings." + struct_name + " bindings_instance;\n"
485 out_java_trait = out_java_trait + "\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }\n"
486 out_java_trait = out_java_trait + "\tprivate " + struct_name.replace("LDK", "") + "(bindings." + struct_name + " arg"
487 for var in field_vars:
488 if isinstance(var, ConvInfo):
489 out_java_trait = out_java_trait + ", " + var.java_hu_ty + " " + var.arg_name
491 out_java_trait = out_java_trait + ", bindings." + var[0] + " " + var[1]
492 out_java_trait = out_java_trait + ") {\n"
493 out_java_trait = out_java_trait + "\t\tsuper(bindings." + struct_name + "_new(arg"
494 for var in field_vars:
495 if isinstance(var, ConvInfo):
496 if var.from_hu_conv is not None:
497 out_java_trait = out_java_trait + ", " + var.from_hu_conv[0]
499 out_java_trait = out_java_trait + ", " + var.arg_name
501 out_java_trait = out_java_trait + ", " + var[1]
502 out_java_trait = out_java_trait + "));\n"
503 out_java_trait = out_java_trait + "\t\tthis.ptrs_to.add(arg);\n"
504 for var in field_vars:
505 if isinstance(var, ConvInfo):
506 if var.from_hu_conv is not None and var.from_hu_conv[1] != "":
507 out_java_trait = out_java_trait + "\t\t" + var.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n"
509 out_java_trait = out_java_trait + "\t\tthis.ptrs_to.add(" + var[1] + ");\n"
510 out_java_trait = out_java_trait + "\t\tthis.bindings_instance = arg;\n"
511 out_java_trait = out_java_trait + "\t}\n"
512 out_java_trait = out_java_trait + "\t@Override @SuppressWarnings(\"deprecation\")\n"
513 out_java_trait = out_java_trait + "\tprotected void finalize() throws Throwable {\n"
514 out_java_trait = out_java_trait + "\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); } super.finalize();\n"
515 out_java_trait = out_java_trait + "\t}\n\n"
517 java_trait_constr = "\tprivate static class " + struct_name + "Holder { " + struct_name.replace("LDK", "") + " held; }\n"
518 java_trait_constr = java_trait_constr + "\tpublic static " + struct_name.replace("LDK", "") + " new_impl(" + struct_name.replace("LDK", "") + "Interface arg"
519 for var in field_vars:
520 if isinstance(var, ConvInfo):
521 java_trait_constr = java_trait_constr + ", " + var.java_hu_ty + " " + var.arg_name
523 # Ideally we'd be able to take any instance of the interface, but our C code can only represent
524 # Java-implemented version, so we require users pass a Java implementation here :/
525 java_trait_constr = java_trait_constr + ", " + var[0].replace("LDK", "") + "." + var[0].replace("LDK", "") + "Interface " + var[1] + "_impl"
526 java_trait_constr = java_trait_constr + ") {\n\t\tfinal " + struct_name + "Holder impl_holder = new " + struct_name + "Holder();\n"
527 java_trait_constr = java_trait_constr + "\t\timpl_holder.held = new " + struct_name.replace("LDK", "") + "(new bindings." + struct_name + "() {\n"
528 out_java_trait = out_java_trait + "\tpublic static interface " + struct_name.replace("LDK", "") + "Interface {\n"
529 out_java = out_java + "\tpublic interface " + struct_name + " {\n"
531 for fn_line in field_fns:
532 java_meth_descr = "("
533 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
534 out_java = out_java + "\t\t " + fn_line.ret_ty_info.java_ty + " " + fn_line.fn_name + "("
535 java_trait_constr = java_trait_constr + "\t\t\t@Override public " + fn_line.ret_ty_info.java_ty + " " + fn_line.fn_name + "("
536 out_java_trait = out_java_trait + "\t\t" + fn_line.ret_ty_info.java_hu_ty + " " + fn_line.fn_name + "("
538 for idx, arg_conv_info in enumerate(fn_line.args_ty):
540 out_java = out_java + ", "
541 java_trait_constr = java_trait_constr + ", "
542 out_java_trait = out_java_trait + ", "
543 out_java = out_java + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
544 out_java_trait = out_java_trait + arg_conv_info.java_hu_ty + " " + arg_conv_info.arg_name
545 java_trait_constr = java_trait_constr + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
546 java_meth_descr = java_meth_descr + arg_conv_info.java_fn_ty_arg
547 java_meth_descr = java_meth_descr + ")" + fn_line.ret_ty_info.java_fn_ty_arg
548 java_meths.append((fn_line.fn_name, java_meth_descr))
550 out_java = out_java + ");\n"
551 out_java_trait = out_java_trait + ");\n"
552 java_trait_constr = java_trait_constr + ") {\n"
554 for arg_info in fn_line.args_ty:
555 if arg_info.to_hu_conv is not None:
556 java_trait_constr = java_trait_constr + "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
558 if fn_line.ret_ty_info.java_ty != "void":
559 java_trait_constr = java_trait_constr + "\t\t\t\t" + fn_line.ret_ty_info.java_hu_ty + " ret = arg." + fn_line.fn_name + "("
561 java_trait_constr = java_trait_constr + "\t\t\t\targ." + fn_line.fn_name + "("
563 for idx, arg_info in enumerate(fn_line.args_ty):
565 java_trait_constr = java_trait_constr + ", "
566 if arg_info.to_hu_conv_name is not None:
567 java_trait_constr = java_trait_constr + arg_info.to_hu_conv_name
569 java_trait_constr = java_trait_constr + arg_info.arg_name
571 java_trait_constr = java_trait_constr + ");\n"
572 if fn_line.ret_ty_info.java_ty != "void":
573 if fn_line.ret_ty_info.from_hu_conv is not None:
574 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"
575 if fn_line.ret_ty_info.from_hu_conv[1] != "":
576 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"
577 #if fn_line.ret_ty_info.rust_obj in result_types:
578 java_trait_constr = java_trait_constr + "\t\t\t\treturn result;\n"
580 java_trait_constr = java_trait_constr + "\t\t\t\treturn ret;\n"
581 java_trait_constr = java_trait_constr + "\t\t\t}\n"
582 java_trait_constr = java_trait_constr + "\t\t}"
583 for var in field_vars:
584 if isinstance(var, ConvInfo):
585 java_trait_constr = java_trait_constr + ", " + var.arg_name
587 java_trait_constr = java_trait_constr + ", " + var[1] + ".new_impl(" + var[1] + "_impl).bindings_instance"
588 out_java_trait = out_java_trait + "\t}\n"
589 out_java_trait = out_java_trait + java_trait_constr + ");\n\t\treturn impl_holder.held;\n\t}\n"
591 out_java = out_java + "\t}\n"
593 out_java = out_java + "\tpublic static native long " + struct_name + "_new(" + struct_name + " impl"
594 for var in field_vars:
595 if isinstance(var, ConvInfo):
596 out_java = out_java + ", " + var.java_ty + " " + var.arg_name
598 out_java = out_java + ", " + var[0] + " " + var[1]
599 out_java = out_java + ");\n"
601 # Now that we've written out our java code (and created java_meths), generate C
602 out_c = "typedef struct " + struct_name + "_JCalls {\n"
603 out_c = out_c + "\tatomic_size_t refcnt;\n"
604 out_c = out_c + "\tJavaVM *vm;\n"
605 out_c = out_c + "\tjweak o;\n"
606 for var in field_vars:
607 if isinstance(var, ConvInfo):
608 # We're a regular ol' field
612 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
614 if fn.fn_name != "free" and fn.fn_name != "clone":
615 out_c = out_c + "\tjmethodID " + fn.fn_name + "_meth;\n"
616 out_c = out_c + "} " + struct_name + "_JCalls;\n"
618 for fn_line in field_fns:
619 if fn_line.fn_name == "free":
620 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
621 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
622 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
623 out_c = out_c + "\t\tJNIEnv *env;\n"
624 out_c = out_c + "\t\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_6) == JNI_OK);\n"
625 out_c = out_c + "\t\t(*env)->DeleteWeakGlobalRef(env, j_calls->o);\n"
626 out_c = out_c + "\t\tFREE(j_calls);\n"
627 out_c = out_c + "\t}\n}\n"
629 for idx, fn_line in enumerate(field_fns):
630 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
631 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
632 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_jcall("
633 if fn_line.self_is_const:
634 out_c = out_c + "const void* this_arg"
636 out_c = out_c + "void* this_arg"
638 for idx, arg in enumerate(fn_line.args_ty):
639 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
641 out_c = out_c + ") {\n"
642 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
643 out_c = out_c + "\tJNIEnv *env;\n"
644 out_c = out_c + "\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_6) == JNI_OK);\n"
646 for arg_info in fn_line.args_ty:
647 if arg_info.ret_conv is not None:
648 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
649 out_c = out_c + arg_info.arg_name
650 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
652 out_c = out_c + "\tjobject obj = (*env)->NewLocalRef(env, j_calls->o);\n\tCHECK(obj != NULL);\n"
653 if fn_line.ret_ty_info.c_ty.endswith("Array"):
654 out_c = out_c + "\t" + fn_line.ret_ty_info.c_ty + " arg = (*env)->CallObjectMethod(env, obj, j_calls->" + fn_line.fn_name + "_meth"
655 elif not fn_line.ret_ty_info.passed_as_ptr:
656 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"
658 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"
660 for idx, arg_info in enumerate(fn_line.args_ty):
661 if arg_info.ret_conv is not None:
662 out_c = out_c + ", " + arg_info.ret_conv_name
664 out_c = out_c + ", " + arg_info.arg_name
665 out_c = out_c + ");\n"
666 if fn_line.ret_ty_info.arg_conv is not None:
667 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"
669 out_c = out_c + "}\n"
671 # Write out a clone function whether we need one or not, as we use them in moving to rust
672 out_c = out_c + "static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n"
673 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
674 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
675 for var in field_vars:
676 if not isinstance(var, ConvInfo):
677 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
678 out_c = out_c + "\treturn (void*) this_arg;\n"
679 out_c = out_c + "}\n"
681 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (" + self.c_fn_args_pfx + ", jobject o"
682 for var in field_vars:
683 if isinstance(var, ConvInfo):
684 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
686 out_c = out_c + ", jobject " + var[1]
687 out_c = out_c + ") {\n"
689 out_c = out_c + "\tjclass c = (*env)->GetObjectClass(env, o);\n"
690 out_c = out_c + "\tCHECK(c != NULL);\n"
691 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
692 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
693 out_c = out_c + "\tDO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);\n"
694 out_c = out_c + "\tcalls->o = (*env)->NewWeakGlobalRef(env, o);\n"
696 for (fn_name, java_meth_descr) in java_meths:
697 if fn_name != "free" and fn_name != "clone":
698 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
699 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
701 for var in field_vars:
702 if isinstance(var, ConvInfo) and var.arg_conv is not None:
703 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
704 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
705 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
706 for fn_line in field_fns:
707 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
708 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_jcall,\n"
709 elif fn_line.fn_name == "free":
710 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
712 out_c = out_c + "\t\t.clone = " + struct_name + "_JCalls_clone,\n"
713 for var in field_vars:
714 if isinstance(var, ConvInfo):
715 if var.arg_conv_name is not None:
716 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
717 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
719 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
720 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
722 out_c = out_c + "\t\t." + var[1] + " = " + var[0] + "_init(env, clz, " + var[1] + "),\n"
723 out_c = out_c + "\t};\n"
724 for var in field_vars:
725 if not isinstance(var, ConvInfo):
726 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
727 out_c = out_c + "\treturn ret;\n"
728 out_c = out_c + "}\n"
730 out_c = out_c + self.c_fn_ty_pfx + "int64_t " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "jobject o"
731 for var in field_vars:
732 if isinstance(var, ConvInfo):
733 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
735 out_c = out_c + ", jobject " + var[1]
736 out_c = out_c + ") {\n"
737 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
738 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(env, clz, o"
739 for var in field_vars:
740 if isinstance(var, ConvInfo):
741 out_c = out_c + ", " + var.arg_name
743 out_c = out_c + ", " + var[1]
744 out_c = out_c + ");\n"
745 out_c = out_c + "\treturn (long)res_ptr;\n"
746 out_c = out_c + "}\n"
748 return (out_java, out_java_trait, out_c)
750 def trait_struct_inc_refcnt(self, ty_info):
751 base_conv = "\nif (" + ty_info.var_name + "_conv.free == " + ty_info.rust_obj + "_JCalls_free) {\n"
752 base_conv = base_conv + "\t// If this_arg is a JCalls struct, then we need to increment the refcnt in it.\n"
753 base_conv = base_conv + "\t" + ty_info.rust_obj + "_JCalls_clone(" + ty_info.var_name + "_conv.this_arg);\n}"
756 def map_complex_enum(self, struct_name, variant_list, camel_to_snake):
757 java_hu_type = struct_name.replace("LDK", "")
762 out_java_enum += (self.hu_struct_file_prefix)
763 out_java_enum += ("public class " + java_hu_type + " extends CommonBase {\n")
764 out_java_enum += ("\tprivate " + java_hu_type + "(Object _dummy, long ptr) { super(ptr); }\n")
765 out_java_enum += ("\t@Override @SuppressWarnings(\"deprecation\")\n")
766 out_java_enum += ("\tprotected void finalize() throws Throwable {\n")
767 out_java_enum += ("\t\tsuper.finalize();\n")
768 out_java_enum += ("\t\tif (ptr != 0) { bindings." + java_hu_type + "_free(ptr); }\n")
769 out_java_enum += ("\t}\n")
770 out_java_enum += ("\tstatic " + java_hu_type + " constr_from_ptr(long ptr) {\n")
771 out_java_enum += ("\t\tbindings." + struct_name + " raw_val = bindings." + struct_name + "_ref_from_ptr(ptr);\n")
772 java_hu_subclasses = ""
774 init_meth_jty_strs = {}
776 out_java += ("\tpublic static class " + struct_name + " {\n")
777 out_java += ("\t\tprivate " + struct_name + "() {}\n")
778 for var in variant_list:
779 out_java += ("\t\tpublic final static class " + var.var_name + " extends " + struct_name + " {\n")
780 java_hu_subclasses = java_hu_subclasses + "\tpublic final static class " + var.var_name + " extends " + java_hu_type + " {\n"
781 out_java_enum += ("\t\tif (raw_val.getClass() == bindings." + struct_name + "." + var.var_name + ".class) {\n")
782 out_java_enum += ("\t\t\treturn new " + var.var_name + "(ptr, (bindings." + struct_name + "." + var.var_name + ")raw_val);\n")
783 init_meth_jty_str = ""
784 init_meth_params = ""
787 for idx, field_ty in enumerate(var.fields):
788 out_java += ("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.arg_name + ";\n")
789 java_hu_subclasses = java_hu_subclasses + "\t\tpublic final " + field_ty.java_hu_ty + " " + field_ty.arg_name + ";\n"
790 if field_ty.to_hu_conv is not None:
791 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.java_ty + " " + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
792 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
793 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
795 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
796 init_meth_jty_str = init_meth_jty_str + field_ty.java_fn_ty_arg
798 init_meth_params = init_meth_params + ", "
799 init_meth_params = init_meth_params + field_ty.java_ty + " " + field_ty.arg_name
800 init_meth_body = init_meth_body + "this." + field_ty.arg_name + " = " + field_ty.arg_name + "; "
801 out_java += ("\t\t\t" + var.var_name + "(" + init_meth_params + ") { ")
802 out_java += (init_meth_body)
804 out_java += ("\t\t}\n")
805 out_java_enum += ("\t\t}\n")
806 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"
807 java_hu_subclasses = java_hu_subclasses + hu_conv_body
808 java_hu_subclasses = java_hu_subclasses + "\t\t}\n\t}\n"
809 init_meth_jty_strs[var.var_name] = init_meth_jty_str
810 out_java += ("\t\tstatic native void init();\n")
811 out_java += ("\t}\n")
812 out_java_enum += ("\t\tassert false; return null; // Unreachable without extending the (internal) bindings interface\n\t}\n\n")
813 out_java_enum += (java_hu_subclasses)
814 out_java += ("\tstatic { " + struct_name + ".init(); }\n")
815 out_java += ("\tpublic static native " + struct_name + " " + struct_name + "_ref_from_ptr(long ptr);\n");
817 out_c += (self.c_complex_enum_pfx(struct_name, [x.var_name for x in variant_list], init_meth_jty_strs))
819 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")
820 out_c += ("\t" + struct_name + " *obj = (" + struct_name + "*)ptr;\n")
821 out_c += ("\tswitch(obj->tag) {\n")
822 for var in variant_list:
823 out_c += ("\t\tcase " + struct_name + "_" + var.var_name + ": {\n")
825 for idx, field_map in enumerate(var.fields):
826 if field_map.ret_conv is not None:
827 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
828 out_c += ("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
829 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
830 c_params.append(field_map.ret_conv_name)
832 c_params.append("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
833 out_c += ("\t\t\treturn " + self.c_constr_native_complex_enum(struct_name, var.var_name, c_params) + ";\n")
835 out_c += ("\t\tdefault: abort();\n")
836 out_c += ("\t}\n}\n")
837 out_java_enum += ("}\n")
838 return (out_java, out_java_enum, out_c)
840 def map_opaque_struct(self, struct_name):
841 out_opaque_struct_human = ""
842 out_opaque_struct_human += self.hu_struct_file_prefix
843 out_opaque_struct_human += ("public class " + struct_name.replace("LDK","") + " extends CommonBase")
844 if struct_name.startswith("LDKLocked"):
845 out_opaque_struct_human += (" implements AutoCloseable")
846 out_opaque_struct_human += (" {\n")
847 out_opaque_struct_human += ("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); }\n")
848 if struct_name.startswith("LDKLocked"):
849 out_opaque_struct_human += ("\t@Override public void close() {\n")
851 out_opaque_struct_human += ("\t@Override @SuppressWarnings(\"deprecation\")\n")
852 out_opaque_struct_human += ("\tprotected void finalize() throws Throwable {\n")
853 out_opaque_struct_human += ("\t\tsuper.finalize();\n")
854 out_opaque_struct_human += ("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); }\n")
855 out_opaque_struct_human += ("\t}\n\n")
856 return out_opaque_struct_human
859 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):
862 out_java_struct = None
864 out_java += ("\tpublic static native ")
865 out_c += (self.c_fn_ty_pfx)
866 out_c += (return_type_info.c_ty)
867 out_java += (return_type_info.java_ty)
868 if return_type_info.ret_conv is not None:
869 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
870 out_java += (" " + method_name + "(")
871 have_args = len(argument_types) > 1 or (len(argument_types) > 0 and argument_types[0].c_ty != "void")
872 out_c += (" " + self.c_fn_name_define_pfx(method_name, have_args))
874 for idx, arg_conv_info in enumerate(argument_types):
878 if arg_conv_info.c_ty != "void":
879 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
880 out_java += (arg_conv_info.java_ty + " " + arg_conv_info.arg_name)
884 out_java_struct += ("\t// Skipped " + method_name + "\n")
886 meth_n = method_name[len(struct_meth) + 1:]
889 "\tpublic static " + return_type_info.java_hu_ty + " constructor_" + meth_n + "(")
891 out_java_struct += ("\tpublic " + return_type_info.java_hu_ty + " " + meth_n + "(")
892 for idx, arg in enumerate(argument_types):
894 if not takes_self or idx > 1:
895 out_java_struct += (", ")
898 if arg.java_ty != "void":
899 if arg.arg_name in default_constructor_args:
900 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
902 out_java_struct += (", ")
904 explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name)
906 out_java_struct += (arg.java_hu_ty + " " + arg.arg_name)
909 if out_java_struct is not None:
910 out_java_struct += (") {\n")
911 for info in argument_types:
912 if info.arg_conv is not None:
913 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
914 if return_type_info.ret_conv is not None:
915 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
916 elif return_type_info.c_ty != "void":
917 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
920 if c_call_string is None:
921 out_c += (method_name + "(")
923 out_c += (c_call_string)
924 for idx, info in enumerate(argument_types):
925 if info.arg_conv_name is not None:
928 elif c_call_string is not None:
930 out_c += (info.arg_conv_name)
932 if return_type_info.ret_conv is not None:
933 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
936 for info in argument_types:
937 if info.arg_conv_cleanup is not None:
938 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
939 if return_type_info.ret_conv is not None:
940 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
941 elif return_type_info.c_ty != "void":
942 out_c += ("\n\treturn ret_val;")
946 out_java_struct += ("\t\t")
947 if return_type_info.java_ty != "void":
948 out_java_struct += (return_type_info.java_ty + " ret = ")
949 out_java_struct += ("bindings." + method_name + "(")
950 for idx, info in enumerate(argument_types):
952 out_java_struct += (", ")
953 if idx == 0 and takes_self:
954 out_java_struct += ("this.ptr")
955 elif info.arg_name in default_constructor_args:
956 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
957 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
959 out_java_struct += (", ")
960 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
961 if explode_arg.from_hu_conv is not None:
963 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
965 out_java_struct += (expl_arg_name)
966 out_java_struct += (")")
967 elif info.from_hu_conv is not None:
968 out_java_struct += (info.from_hu_conv[0])
970 out_java_struct += (info.arg_name)
971 out_java_struct += (");\n")
972 if return_type_info.to_hu_conv is not None:
974 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
975 return_type_info.to_hu_conv_name) + "\n")
977 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
979 for idx, info in enumerate(argument_types):
980 if idx == 0 and takes_self:
982 elif info.arg_name in default_constructor_args:
983 for explode_arg in default_constructor_args[info.arg_name]:
984 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
985 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
986 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
987 expl_arg_name).replace(
988 "this", return_type_info.to_hu_conv_name) + ";\n")
989 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
990 if not takes_self and return_type_info.to_hu_conv_name is not None:
992 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name).replace("\n", "\n\t\t") + ";\n")
994 out_java_struct += ("\t\t" + info.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n")
996 if return_type_info.to_hu_conv_name is not None:
997 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
998 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
999 out_java_struct += ("\t\treturn ret;\n")
1000 out_java_struct += ("\t}\n\n")
1002 return (out_java, out_c, out_java_struct)