1 from bindingstypes import *
4 def __init__(self, DEBUG: bool, **kwargs):
5 self.c_array_class_caches = set()
6 self.c_type_map = dict(
13 self.to_hu_conv_templates = dict(
14 ptr = '{human_type} {var_name}_hu_conv = new {human_type}(null, {var_name});',
15 default = '{human_type} {var_name}_hu_conv = new {human_type}(null, {var_name});'
18 self.bindings_header = """package org.ldk.impl;
19 import org.ldk.enums.*;
21 public class bindings {
22 public static class VecOrSliceDef {
26 public VecOrSliceDef(long dataptr, long datalen, long stride) {
27 this.dataptr = dataptr; this.datalen = datalen; this.stride = stride;
31 System.loadLibrary(\"lightningjni\");
32 init(java.lang.Enum.class, VecOrSliceDef.class);
35 static native void init(java.lang.Class c, java.lang.Class slicedef);
36 static native void init_class_cache();
38 public static native boolean deref_bool(long ptr);
39 public static native long deref_long(long ptr);
40 public static native void free_heap_ptr(long ptr);
41 public static native byte[] read_bytes(long ptr, long len);
42 public static native byte[] get_u8_slice_bytes(long slice_ptr);
43 public static native long bytes_to_u8_vec(byte[] bytes);
44 public static native long new_txpointer_copy_data(byte[] txdata);
45 public static native void txpointer_free(long ptr);
46 public static native byte[] txpointer_get_buffer(long ptr);
47 public static native long vec_slice_len(long vec);
48 public static native long new_empty_slice_vec();
52 self.bindings_footer = "}\n"
54 self.common_base = """package org.ldk.structs;
55 import java.util.LinkedList;
58 LinkedList<Object> ptrs_to = new LinkedList();
59 protected CommonBase(long ptr) { this.ptr = ptr; }
60 public long _test_only_get_ptr() { return this.ptr; }
64 self.c_file_pfx = """#include \"org_ldk_impl_bindings.h\"
65 #include <rust_types.h>
66 #include <lightning.h>
68 #include <stdatomic.h>
74 self.c_file_pfx = self.c_file_pfx + """#define MALLOC(a, _) malloc(a)
75 #define FREE(p) if ((long)(p) > 1024) { free(p); }
76 #define DO_ASSERT(a) (void)(a)
80 self.c_file_pfx = self.c_file_pfx + """#include <assert.h>
81 // Always run a, then assert it is true:
82 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
83 // Assert a is true or do nothing
84 #define CHECK(a) DO_ASSERT(a)
86 // Running a leak check across all the allocations and frees of the JDK is a mess,
87 // so instead we implement our own naive leak checker here, relying on the -wrap
88 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
89 // and free'd in Rust or C across the generated bindings shared library.
93 static mtx_t allocation_mtx;
95 void __attribute__((constructor)) init_mtx() {
96 DO_ASSERT(mtx_init(&allocation_mtx, mtx_plain) == thrd_success);
100 typedef struct allocation {
101 struct allocation* next;
103 const char* struct_name;
107 static allocation* allocation_ll = NULL;
109 void* __real_malloc(size_t len);
110 void* __real_calloc(size_t nmemb, size_t len);
111 static void new_allocation(void* res, const char* struct_name) {
112 allocation* new_alloc = __real_malloc(sizeof(allocation));
113 new_alloc->ptr = res;
114 new_alloc->struct_name = struct_name;
115 new_alloc->bt_len = backtrace(new_alloc->bt, BT_MAX);
116 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
117 new_alloc->next = allocation_ll;
118 allocation_ll = new_alloc;
119 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
121 static void* MALLOC(size_t len, const char* struct_name) {
122 void* res = __real_malloc(len);
123 new_allocation(res, struct_name);
126 void __real_free(void* ptr);
127 static void alloc_freed(void* ptr) {
128 allocation* p = NULL;
129 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
130 allocation* it = allocation_ll;
131 while (it->ptr != ptr) {
132 p = it; it = it->next;
134 fprintf(stderr, "Tried to free unknown pointer %p at:\\n", ptr);
136 int bt_len = backtrace(bt, BT_MAX);
137 backtrace_symbols_fd(bt, bt_len, STDERR_FILENO);
138 fprintf(stderr, "\\n\\n");
139 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
140 return; // addrsan should catch malloc-unknown and print more info than we have
143 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
144 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
145 DO_ASSERT(it->ptr == ptr);
148 static void FREE(void* ptr) {
149 if ((long)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys
154 void* __wrap_malloc(size_t len) {
155 void* res = __real_malloc(len);
156 new_allocation(res, "malloc call");
159 void* __wrap_calloc(size_t nmemb, size_t len) {
160 void* res = __real_calloc(nmemb, len);
161 new_allocation(res, "calloc call");
164 void __wrap_free(void* ptr) {
165 if (ptr == NULL) return;
170 void* __real_realloc(void* ptr, size_t newlen);
171 void* __wrap_realloc(void* ptr, size_t len) {
172 if (ptr != NULL) alloc_freed(ptr);
173 void* res = __real_realloc(ptr, len);
174 new_allocation(res, "realloc call");
177 void __wrap_reallocarray(void* ptr, size_t new_sz) {
178 // Rust doesn't seem to use reallocarray currently
182 void __attribute__((destructor)) check_leaks() {
183 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
184 fprintf(stderr, "%s %p remains:\\n", a->struct_name, a->ptr);
185 backtrace_symbols_fd(a->bt, a->bt_len, STDERR_FILENO);
186 fprintf(stderr, "\\n\\n");
188 DO_ASSERT(allocation_ll == NULL);
191 self.c_file_pfx = self.c_file_pfx + """
192 static jmethodID ordinal_meth = NULL;
193 static jmethodID slicedef_meth = NULL;
194 static jclass slicedef_cls = NULL;
195 JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class, jclass slicedef_class) {
196 ordinal_meth = (*env)->GetMethodID(env, enum_class, "ordinal", "()I");
197 CHECK(ordinal_meth != NULL);
198 slicedef_meth = (*env)->GetMethodID(env, slicedef_class, "<init>", "(JJJ)V");
199 CHECK(slicedef_meth != NULL);
200 slicedef_cls = (*env)->NewGlobalRef(env, slicedef_class);
201 CHECK(slicedef_cls != NULL);
204 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_deref_1bool (JNIEnv * env, jclass _a, jlong ptr) {
205 return *((bool*)ptr);
207 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_deref_1long (JNIEnv * env, jclass _a, jlong ptr) {
208 return *((long*)ptr);
210 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_free_1heap_1ptr (JNIEnv * env, jclass _a, jlong ptr) {
213 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_read_1bytes (JNIEnv * env, jclass _b, jlong ptr, jlong len) {
214 jbyteArray ret_arr = (*env)->NewByteArray(env, len);
215 (*env)->SetByteArrayRegion(env, ret_arr, 0, len, (unsigned char*)ptr);
218 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes (JNIEnv * env, jclass _b, jlong slice_ptr) {
219 LDKu8slice *slice = (LDKu8slice*)slice_ptr;
220 jbyteArray ret_arr = (*env)->NewByteArray(env, slice->datalen);
221 (*env)->SetByteArrayRegion(env, ret_arr, 0, slice->datalen, slice->data);
224 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_bytes_1to_1u8_1vec (JNIEnv * env, jclass _b, jbyteArray bytes) {
225 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8");
226 vec->datalen = (*env)->GetArrayLength(env, bytes);
227 vec->data = (uint8_t*)MALLOC(vec->datalen, "LDKCVec_u8Z Bytes");
228 (*env)->GetByteArrayRegion (env, bytes, 0, vec->datalen, vec->data);
231 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_txpointer_1get_1buffer (JNIEnv * env, jclass _b, jlong ptr) {
232 LDKTransaction *txdata = (LDKTransaction*)ptr;
234 slice.data = txdata->data;
235 slice.datalen = txdata->datalen;
236 return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (long)&slice);
238 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data (JNIEnv * env, jclass _b, jbyteArray bytes) {
239 LDKTransaction *txdata = (LDKTransaction*)MALLOC(sizeof(LDKTransaction), "LDKTransaction");
240 txdata->datalen = (*env)->GetArrayLength(env, bytes);
241 txdata->data = (uint8_t*)MALLOC(txdata->datalen, "Tx Data Bytes");
242 txdata->data_is_owned = false;
243 (*env)->GetByteArrayRegion (env, bytes, 0, txdata->datalen, txdata->data);
246 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_txpointer_1free (JNIEnv * env, jclass _b, jlong ptr) {
247 LDKTransaction *tx = (LDKTransaction*)ptr;
248 tx->data_is_owned = true;
249 Transaction_free(*tx);
252 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_vec_1slice_1len (JNIEnv * env, jclass _a, jlong ptr) {
253 // Check offsets of a few Vec types are all consistent as we're meant to be generic across types
254 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_SignatureZ, datalen), "Vec<*> needs to be mapped identically");
255 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_MessageSendEventZ, datalen), "Vec<*> needs to be mapped identically");
256 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_EventZ, datalen), "Vec<*> needs to be mapped identically");
257 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_C2Tuple_usizeTransactionZZ, datalen), "Vec<*> needs to be mapped identically");
258 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)ptr;
259 return (long)vec->datalen;
261 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1empty_1slice_1vec (JNIEnv * env, jclass _b) {
262 // Check sizes of a few Vec types are all consistent as we're meant to be generic across types
263 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_SignatureZ), "Vec<*> needs to be mapped identically");
264 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_MessageSendEventZ), "Vec<*> needs to be mapped identically");
265 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_EventZ), "Vec<*> needs to be mapped identically");
266 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_C2Tuple_usizeTransactionZZ), "Vec<*> needs to be mapped identically");
267 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "Empty LDKCVec");
273 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
274 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
275 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
276 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
278 _Static_assert(sizeof(jlong) == sizeof(int64_t), "We assume that j-types are the same as C types");
279 _Static_assert(sizeof(jbyte) == sizeof(char), "We assume that j-types are the same as C types");
280 _Static_assert(sizeof(void*) <= 8, "Pointers must fit into 64 bits");
282 typedef jlongArray int64_tArray;
283 typedef jbyteArray int8_tArray;
285 static inline jstring str_ref_to_java(JNIEnv *env, const char* chars, size_t len) {
286 // Sadly we need to create a temporary because Java can't accept a char* without a 0-terminator
287 char* err_buf = MALLOC(len + 1, "str conv buf");
288 memcpy(err_buf, chars, len);
290 jstring err_conv = (*env)->NewStringUTF(env, chars);
296 self.hu_struct_file_prefix = """package org.ldk.structs;
298 import org.ldk.impl.bindings;
299 import org.ldk.enums.*;
300 import org.ldk.util.*;
301 import java.util.Arrays;
303 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
305 self.c_fn_ty_pfx = "JNIEXPORT "
306 self.c_fn_args_pfx = "JNIEnv *env, jclass clz"
307 self.file_ext = ".java"
308 self.ptr_c_ty = "int64_t"
309 self.ptr_native_ty = "long"
310 self.result_c_ty = "jclass"
311 self.ptr_arr = "jobjectArray"
312 self.get_native_arr_len_call = ("(*env)->GetArrayLength(env, ", ")")
314 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
315 if ty_info.subty is None or not ty_info.subty.c_ty.endswith("Array"):
316 return "(*env)->ReleasePrimitiveArrayCritical(env, " + arr_var + ", " + arr_ptr_var + ", 0)"
318 def create_native_arr_call(self, arr_len, ty_info):
319 if ty_info.c_ty == "int8_tArray":
320 return "(*env)->NewByteArray(env, " + arr_len + ")"
321 elif ty_info.subty.c_ty.endswith("Array"):
322 clz_var = ty_info.java_fn_ty_arg[1:].replace("[", "arr_of_")
323 self.c_array_class_caches.add(clz_var)
324 return "(*env)->NewObjectArray(env, " + arr_len + ", " + clz_var + "_clz, NULL);\n"
326 return "(*env)->New" + ty_info.java_ty.strip("[]").title() + "Array(env, " + arr_len + ")"
327 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
328 if ty_info.c_ty == "int8_tArray":
329 return ("(*env)->SetByteArrayRegion(env, " + arr_name + ", 0, " + arr_len + ", ", ")")
332 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
333 if ty_info.c_ty == "int8_tArray":
335 return "(*env)->GetByteArrayRegion(env, " + arr_name + ", 0, " + arr_len + ", " + dest_name + ")"
337 return "(*env)->GetByteArrayElements (env, " + arr_name + ", NULL)"
338 elif not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
339 return "(*env)->Get" + ty_info.subty.java_ty.title() + "ArrayElements (env, " + arr_name + ", NULL)"
342 def get_native_arr_elem(self, arr_name, idxc, ty_info):
343 if self.get_native_arr_contents(arr_name, "", "", ty_info, False) is None:
344 return "(*env)->GetObjectArrayElement(env, " + arr_name + ", " + idxc + ")"
346 assert False # Only called if above is None
347 def get_native_arr_ptr_call(self, ty_info):
348 if ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array"):
350 return ("(*env)->GetPrimitiveArrayCritical(env, ", ", NULL)")
351 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
352 if ty_info.subty is None or not ty_info.subty.c_ty.endswith("Array"):
354 return "(*env)->SetObjectArrayElement(env, " + arr_name + ", " + idxc + ", " + entry_access + ")"
355 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
356 if ty_info.c_ty == "int8_tArray":
357 return "(*env)->ReleaseByteArrayElements(env, " + arr_name + ", (int8_t*)" + dest_name + ", 0);"
359 return "(*env)->Release" + ty_info.java_ty.strip("[]").title() + "ArrayElements(env, " + arr_name + ", " + dest_name + ", 0)"
361 def str_ref_to_c_call(self, var_name, str_len):
362 return "str_ref_to_java(env, " + var_name + ", " + str_len + ")"
364 def c_fn_name_define_pfx(self, fn_name, has_args):
366 return "JNICALL Java_org_ldk_impl_bindings_" + fn_name.replace("_", "_1") + "(JNIEnv *env, jclass clz, "
367 return "JNICALL Java_org_ldk_impl_bindings_" + fn_name.replace("_", "_1") + "(JNIEnv *env, jclass clz"
371 for ty in self.c_array_class_caches:
372 res = res + "static jclass " + ty + "_clz = NULL;\n"
373 res = res + "JNIEXPORT void Java_org_ldk_impl_bindings_init_1class_1cache(JNIEnv * env, jclass clz) {\n"
374 for ty in self.c_array_class_caches:
375 res = res + "\t" + ty + "_clz = (*env)->FindClass(env, \"" + ty.replace("arr_of_", "[") + "\");\n"
376 res = res + "\tCHECK(" + ty + "_clz != NULL);\n"
377 res = res + "\t" + ty + "_clz = (*env)->NewGlobalRef(env, " + ty + "_clz);\n"
381 def native_c_unitary_enum_map(self, struct_name, variants):
382 out_java_enum = "package org.ldk.enums;\n\n"
385 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_from_java(" + self.c_fn_args_pfx + ") {\n"
386 out_c = out_c + "\tswitch ((*env)->CallIntMethod(env, clz, ordinal_meth)) {\n"
388 out_java_enum = out_java_enum + "public enum " + struct_name + " {\n"
391 out_java_enum = out_java_enum + "\t" + var + ",\n"
392 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
394 out_java_enum = out_java_enum + "\t; static native void init();\n"
395 out_java_enum = out_java_enum + "\tstatic { init(); }\n"
396 out_java_enum = out_java_enum + "}"
397 out_java = out_java + "\tstatic { " + struct_name + ".values(); /* Force enum statics to run */ }\n"
398 out_c = out_c + "\t}\n"
399 out_c = out_c + "\tabort();\n"
400 out_c = out_c + "}\n"
402 out_c = out_c + "static jclass " + struct_name + "_class = NULL;\n"
404 out_c = out_c + "static jfieldID " + struct_name + "_" + var + " = NULL;\n"
405 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"
406 out_c = out_c + "\t" + struct_name + "_class = (*env)->NewGlobalRef(env, clz);\n"
407 out_c = out_c + "\tCHECK(" + struct_name + "_class != NULL);\n"
409 out_c = out_c + "\t" + struct_name + "_" + var + " = (*env)->GetStaticFieldID(env, " + struct_name + "_class, \"" + var + "\", \"Lorg/ldk/enums/" + struct_name + ";\");\n"
410 out_c = out_c + "\tCHECK(" + struct_name + "_" + var + " != NULL);\n"
411 out_c = out_c + "}\n"
412 out_c = out_c + "static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\n"
413 out_c = out_c + "\tswitch (val) {\n"
416 out_c = out_c + "\t\tcase " + var + ":\n"
417 out_c = out_c + "\t\t\treturn (*env)->GetStaticObjectField(env, " + struct_name + "_class, " + struct_name + "_" + var + ");\n"
419 out_c = out_c + "\t\tdefault: abort();\n"
420 out_c = out_c + "\t}\n"
421 out_c = out_c + "}\n\n"
423 return (out_c, out_java_enum, out_java)
425 def c_unitary_enum_to_native_call(self, ty_info):
426 return (ty_info.rust_obj + "_to_java(env, ", ")")
427 def native_unitary_enum_to_c_call(self, ty_info):
428 return (ty_info.rust_obj + "_from_java(env, ", ")")
430 def c_complex_enum_pfx(self, struct_name, variants, init_meth_jty_strs):
433 out_c = out_c + "static jclass " + struct_name + "_" + var + "_class = NULL;\n"
434 out_c = out_c + "static jmethodID " + struct_name + "_" + var + "_meth = NULL;\n"
435 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"
436 for var_name in variants:
437 out_c = out_c + "\t" + struct_name + "_" + var_name + "_class =\n"
438 out_c = out_c + "\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + struct_name + "$" + var_name + ";\"));\n"
439 out_c = out_c + "\tCHECK(" + struct_name + "_" + var_name + "_class != NULL);\n"
440 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"
441 out_c = out_c + "\tCHECK(" + struct_name + "_" + var_name + "_meth != NULL);\n"
442 out_c = out_c + "}\n"
445 def c_complex_enum_pass_ty(self, struct_name):
448 def c_constr_native_complex_enum(self, struct_name, variant, c_params):
449 ret = "(*env)->NewObject(env, " + struct_name + "_" + variant + "_class, " + struct_name + "_" + variant + "_meth"
450 for param in c_params:
451 ret = ret + ", " + param
454 def native_c_map_trait(self, struct_name, field_vars, field_fns):
458 # First generate most of the Java code, note that we need information about java method argument strings for C
459 out_java_trait = out_java_trait + self.hu_struct_file_prefix
460 out_java_trait = out_java_trait + "public class " + struct_name.replace("LDK","") + " extends CommonBase {\n"
461 out_java_trait = out_java_trait + "\tfinal bindings." + struct_name + " bindings_instance;\n"
462 out_java_trait = out_java_trait + "\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }\n"
463 out_java_trait = out_java_trait + "\tprivate " + struct_name.replace("LDK", "") + "(bindings." + struct_name + " arg"
464 for var in field_vars:
465 if isinstance(var, ConvInfo):
466 out_java_trait = out_java_trait + ", " + var.java_hu_ty + " " + var.arg_name
468 out_java_trait = out_java_trait + ", bindings." + var[0] + " " + var[1]
469 out_java_trait = out_java_trait + ") {\n"
470 out_java_trait = out_java_trait + "\t\tsuper(bindings." + struct_name + "_new(arg"
471 for var in field_vars:
472 if isinstance(var, ConvInfo):
473 if var.from_hu_conv is not None:
474 out_java_trait = out_java_trait + ", " + var.from_hu_conv[0]
476 out_java_trait = out_java_trait + ", " + var.arg_name
478 out_java_trait = out_java_trait + ", " + var[1]
479 out_java_trait = out_java_trait + "));\n"
480 out_java_trait = out_java_trait + "\t\tthis.ptrs_to.add(arg);\n"
481 for var in field_vars:
482 if isinstance(var, ConvInfo):
483 if var.from_hu_conv is not None and var.from_hu_conv[1] != "":
484 out_java_trait = out_java_trait + "\t\t" + var.from_hu_conv[1] + ";\n"
486 out_java_trait = out_java_trait + "\t\tthis.ptrs_to.add(" + var[1] + ");\n"
487 out_java_trait = out_java_trait + "\t\tthis.bindings_instance = arg;\n"
488 out_java_trait = out_java_trait + "\t}\n"
489 out_java_trait = out_java_trait + "\t@Override @SuppressWarnings(\"deprecation\")\n"
490 out_java_trait = out_java_trait + "\tprotected void finalize() throws Throwable {\n"
491 out_java_trait = out_java_trait + "\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); } super.finalize();\n"
492 out_java_trait = out_java_trait + "\t}\n\n"
494 java_trait_constr = "\tprivate static class " + struct_name + "Holder { " + struct_name.replace("LDK", "") + " held; }\n"
495 java_trait_constr = java_trait_constr + "\tpublic static " + struct_name.replace("LDK", "") + " new_impl(" + struct_name.replace("LDK", "") + "Interface arg"
496 for var in field_vars:
497 if isinstance(var, ConvInfo):
498 java_trait_constr = java_trait_constr + ", " + var.java_hu_ty + " " + var.arg_name
500 # Ideally we'd be able to take any instance of the interface, but our C code can only represent
501 # Java-implemented version, so we require users pass a Java implementation here :/
502 java_trait_constr = java_trait_constr + ", " + var[0].replace("LDK", "") + "." + var[0].replace("LDK", "") + "Interface " + var[1] + "_impl"
503 java_trait_constr = java_trait_constr + ") {\n\t\tfinal " + struct_name + "Holder impl_holder = new " + struct_name + "Holder();\n"
504 java_trait_constr = java_trait_constr + "\t\timpl_holder.held = new " + struct_name.replace("LDK", "") + "(new bindings." + struct_name + "() {\n"
505 out_java_trait = out_java_trait + "\tpublic static interface " + struct_name.replace("LDK", "") + "Interface {\n"
506 out_java = out_java + "\tpublic interface " + struct_name + " {\n"
508 for fn_line in field_fns:
509 java_meth_descr = "("
510 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
511 out_java = out_java + "\t\t " + fn_line.ret_ty_info.java_ty + " " + fn_line.fn_name + "("
512 java_trait_constr = java_trait_constr + "\t\t\t@Override public " + fn_line.ret_ty_info.java_ty + " " + fn_line.fn_name + "("
513 out_java_trait = out_java_trait + "\t\t" + fn_line.ret_ty_info.java_hu_ty + " " + fn_line.fn_name + "("
515 for idx, arg_conv_info in enumerate(fn_line.args_ty):
517 out_java = out_java + ", "
518 java_trait_constr = java_trait_constr + ", "
519 out_java_trait = out_java_trait + ", "
520 out_java = out_java + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
521 out_java_trait = out_java_trait + arg_conv_info.java_hu_ty + " " + arg_conv_info.arg_name
522 java_trait_constr = java_trait_constr + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
523 java_meth_descr = java_meth_descr + arg_conv_info.java_fn_ty_arg
524 java_meth_descr = java_meth_descr + ")" + fn_line.ret_ty_info.java_fn_ty_arg
525 java_meths.append((fn_line.fn_name, java_meth_descr))
527 out_java = out_java + ");\n"
528 out_java_trait = out_java_trait + ");\n"
529 java_trait_constr = java_trait_constr + ") {\n"
531 for arg_info in fn_line.args_ty:
532 if arg_info.to_hu_conv is not None:
533 java_trait_constr = java_trait_constr + "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
535 if fn_line.ret_ty_info.java_ty != "void":
536 java_trait_constr = java_trait_constr + "\t\t\t\t" + fn_line.ret_ty_info.java_hu_ty + " ret = arg." + fn_line.fn_name + "("
538 java_trait_constr = java_trait_constr + "\t\t\t\targ." + fn_line.fn_name + "("
540 for idx, arg_info in enumerate(fn_line.args_ty):
542 java_trait_constr = java_trait_constr + ", "
543 if arg_info.to_hu_conv_name is not None:
544 java_trait_constr = java_trait_constr + arg_info.to_hu_conv_name
546 java_trait_constr = java_trait_constr + arg_info.arg_name
548 java_trait_constr = java_trait_constr + ");\n"
549 if fn_line.ret_ty_info.java_ty != "void":
550 if fn_line.ret_ty_info.from_hu_conv is not None:
551 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"
552 if fn_line.ret_ty_info.from_hu_conv[1] != "":
553 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"
554 #if fn_line.ret_ty_info.rust_obj in result_types:
555 java_trait_constr = java_trait_constr + "\t\t\t\treturn result;\n"
557 java_trait_constr = java_trait_constr + "\t\t\t\treturn ret;\n"
558 java_trait_constr = java_trait_constr + "\t\t\t}\n"
559 java_trait_constr = java_trait_constr + "\t\t}"
560 for var in field_vars:
561 if isinstance(var, ConvInfo):
562 java_trait_constr = java_trait_constr + ", " + var.arg_name
564 java_trait_constr = java_trait_constr + ", " + var[1] + ".new_impl(" + var[1] + "_impl).bindings_instance"
565 out_java_trait = out_java_trait + "\t}\n"
566 out_java_trait = out_java_trait + java_trait_constr + ");\n\t\treturn impl_holder.held;\n\t}\n"
568 out_java = out_java + "\t}\n"
570 out_java = out_java + "\tpublic static native long " + struct_name + "_new(" + struct_name + " impl"
571 for var in field_vars:
572 if isinstance(var, ConvInfo):
573 out_java = out_java + ", " + var.java_ty + " " + var.arg_name
575 out_java = out_java + ", " + var[0] + " " + var[1]
576 out_java = out_java + ");\n"
578 # Now that we've written out our java code (and created java_meths), generate C
579 out_c = "typedef struct " + struct_name + "_JCalls {\n"
580 out_c = out_c + "\tatomic_size_t refcnt;\n"
581 out_c = out_c + "\tJavaVM *vm;\n"
582 out_c = out_c + "\tjweak o;\n"
583 for var in field_vars:
584 if isinstance(var, ConvInfo):
585 # We're a regular ol' field
589 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
591 if fn.fn_name != "free" and fn.fn_name != "clone":
592 out_c = out_c + "\tjmethodID " + fn.fn_name + "_meth;\n"
593 out_c = out_c + "} " + struct_name + "_JCalls;\n"
595 for fn_line in field_fns:
596 if fn_line.fn_name == "free":
597 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
598 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
599 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
600 out_c = out_c + "\t\tJNIEnv *env;\n"
601 out_c = out_c + "\t\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);\n"
602 out_c = out_c + "\t\t(*env)->DeleteWeakGlobalRef(env, j_calls->o);\n"
603 out_c = out_c + "\t\tFREE(j_calls);\n"
604 out_c = out_c + "\t}\n}\n"
606 for idx, fn_line in enumerate(field_fns):
607 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
608 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
609 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_jcall("
610 if fn_line.self_is_const:
611 out_c = out_c + "const void* this_arg"
613 out_c = out_c + "void* this_arg"
615 for idx, arg in enumerate(fn_line.args_ty):
616 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
618 out_c = out_c + ") {\n"
619 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
620 out_c = out_c + "\tJNIEnv *env;\n"
621 out_c = out_c + "\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);\n"
623 for arg_info in fn_line.args_ty:
624 if arg_info.ret_conv is not None:
625 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
626 out_c = out_c + arg_info.arg_name
627 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
629 out_c = out_c + "\tjobject obj = (*env)->NewLocalRef(env, j_calls->o);\n\tCHECK(obj != NULL);\n"
630 if fn_line.ret_ty_info.c_ty.endswith("Array"):
631 out_c = out_c + "\t" + fn_line.ret_ty_info.c_ty + " arg = (*env)->CallObjectMethod(env, obj, j_calls->" + fn_line.fn_name + "_meth"
632 elif not fn_line.ret_ty_info.passed_as_ptr:
633 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"
635 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"
637 for idx, arg_info in enumerate(fn_line.args_ty):
638 if arg_info.ret_conv is not None:
639 out_c = out_c + ", " + arg_info.ret_conv_name
641 out_c = out_c + ", " + arg_info.arg_name
642 out_c = out_c + ");\n"
643 if fn_line.ret_ty_info.arg_conv is not None:
644 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"
646 out_c = out_c + "}\n"
648 # Write out a clone function whether we need one or not, as we use them in moving to rust
649 out_c = out_c + "static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n"
650 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
651 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
652 for var in field_vars:
653 if not isinstance(var, ConvInfo):
654 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
655 out_c = out_c + "\treturn (void*) this_arg;\n"
656 out_c = out_c + "}\n"
658 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (" + self.c_fn_args_pfx + ", jobject o"
659 for var in field_vars:
660 if isinstance(var, ConvInfo):
661 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
663 out_c = out_c + ", jobject " + var[1]
664 out_c = out_c + ") {\n"
666 out_c = out_c + "\tjclass c = (*env)->GetObjectClass(env, o);\n"
667 out_c = out_c + "\tCHECK(c != NULL);\n"
668 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
669 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
670 out_c = out_c + "\tDO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);\n"
671 out_c = out_c + "\tcalls->o = (*env)->NewWeakGlobalRef(env, o);\n"
673 for (fn_name, java_meth_descr) in java_meths:
674 if fn_name != "free" and fn_name != "clone":
675 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
676 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
678 for var in field_vars:
679 if isinstance(var, ConvInfo) and var.arg_conv is not None:
680 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
681 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
682 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
683 for fn_line in field_fns:
684 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
685 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_jcall,\n"
686 elif fn_line.fn_name == "free":
687 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
689 out_c = out_c + "\t\t.clone = " + struct_name + "_JCalls_clone,\n"
690 for var in field_vars:
691 if isinstance(var, ConvInfo):
692 if var.arg_conv_name is not None:
693 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
694 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
696 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
697 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
699 out_c = out_c + "\t\t." + var[1] + " = " + var[0] + "_init(env, clz, " + var[1] + "),\n"
700 out_c = out_c + "\t};\n"
701 for var in field_vars:
702 if not isinstance(var, ConvInfo):
703 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
704 out_c = out_c + "\treturn ret;\n"
705 out_c = out_c + "}\n"
707 out_c = out_c + self.c_fn_ty_pfx + "long " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "jobject o"
708 for var in field_vars:
709 if isinstance(var, ConvInfo):
710 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
712 out_c = out_c + ", jobject " + var[1]
713 out_c = out_c + ") {\n"
714 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
715 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(env, clz, o"
716 for var in field_vars:
717 if isinstance(var, ConvInfo):
718 out_c = out_c + ", " + var.arg_name
720 out_c = out_c + ", " + var[1]
721 out_c = out_c + ");\n"
722 out_c = out_c + "\treturn (long)res_ptr;\n"
723 out_c = out_c + "}\n"
725 return (out_java, out_java_trait, out_c)
727 def trait_struct_inc_refcnt(self, ty_info):
728 base_conv = "\nif (" + ty_info.var_name + "_conv.free == " + ty_info.rust_obj + "_JCalls_free) {\n"
729 base_conv = base_conv + "\t// If this_arg is a JCalls struct, then we need to increment the refcnt in it.\n"
730 base_conv = base_conv + "\t" + ty_info.rust_obj + "_JCalls_clone(" + ty_info.var_name + "_conv.this_arg);\n}"
733 def map_complex_enum(self, struct_name, variant_list, camel_to_snake):
734 java_hu_type = struct_name.replace("LDK", "")
739 out_java_enum += (self.hu_struct_file_prefix)
740 out_java_enum += ("public class " + java_hu_type + " extends CommonBase {\n")
741 out_java_enum += ("\tprivate " + java_hu_type + "(Object _dummy, long ptr) { super(ptr); }\n")
742 out_java_enum += ("\t@Override @SuppressWarnings(\"deprecation\")\n")
743 out_java_enum += ("\tprotected void finalize() throws Throwable {\n")
744 out_java_enum += ("\t\tsuper.finalize();\n")
745 out_java_enum += ("\t\tif (ptr != 0) { bindings." + java_hu_type + "_free(ptr); }\n")
746 out_java_enum += ("\t}\n")
747 out_java_enum += ("\tstatic " + java_hu_type + " constr_from_ptr(long ptr) {\n")
748 out_java_enum += ("\t\tbindings." + struct_name + " raw_val = bindings." + struct_name + "_ref_from_ptr(ptr);\n")
749 java_hu_subclasses = ""
751 init_meth_jty_strs = {}
753 out_java += ("\tpublic static class " + struct_name + " {\n")
754 out_java += ("\t\tprivate " + struct_name + "() {}\n")
755 for var in variant_list:
756 out_java += ("\t\tpublic final static class " + var.var_name + " extends " + struct_name + " {\n")
757 java_hu_subclasses = java_hu_subclasses + "\tpublic final static class " + var.var_name + " extends " + java_hu_type + " {\n"
758 out_java_enum += ("\t\tif (raw_val.getClass() == bindings." + struct_name + "." + var.var_name + ".class) {\n")
759 out_java_enum += ("\t\t\treturn new " + var.var_name + "(ptr, (bindings." + struct_name + "." + var.var_name + ")raw_val);\n")
760 init_meth_jty_str = ""
761 init_meth_params = ""
764 for idx, field_ty in enumerate(var.fields):
765 out_java += ("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.arg_name + ";\n")
766 java_hu_subclasses = java_hu_subclasses + "\t\tpublic final " + field_ty.java_hu_ty + " " + field_ty.arg_name + ";\n"
767 if field_ty.to_hu_conv is not None:
768 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.java_ty + " " + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
769 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
770 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
772 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
773 init_meth_jty_str = init_meth_jty_str + field_ty.java_fn_ty_arg
775 init_meth_params = init_meth_params + ", "
776 init_meth_params = init_meth_params + field_ty.java_ty + " " + field_ty.arg_name
777 init_meth_body = init_meth_body + "this." + field_ty.arg_name + " = " + field_ty.arg_name + "; "
778 out_java += ("\t\t\t" + var.var_name + "(" + init_meth_params + ") { ")
779 out_java += (init_meth_body)
781 out_java += ("\t\t}\n")
782 out_java_enum += ("\t\t}\n")
783 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"
784 java_hu_subclasses = java_hu_subclasses + hu_conv_body
785 java_hu_subclasses = java_hu_subclasses + "\t\t}\n\t}\n"
786 init_meth_jty_strs[var.var_name] = init_meth_jty_str
787 out_java += ("\t\tstatic native void init();\n")
788 out_java += ("\t}\n")
789 out_java_enum += ("\t\tassert false; return null; // Unreachable without extending the (internal) bindings interface\n\t}\n\n")
790 out_java_enum += (java_hu_subclasses)
791 out_java += ("\tstatic { " + struct_name + ".init(); }\n")
792 out_java += ("\tpublic static native " + struct_name + " " + struct_name + "_ref_from_ptr(long ptr);\n");
794 out_c += (self.c_complex_enum_pfx(struct_name, [x.var_name for x in variant_list], init_meth_jty_strs))
796 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")
797 out_c += ("\t" + struct_name + " *obj = (" + struct_name + "*)ptr;\n")
798 out_c += ("\tswitch(obj->tag) {\n")
799 for var in variant_list:
800 out_c += ("\t\tcase " + struct_name + "_" + var.var_name + ": {\n")
802 for idx, field_map in enumerate(var.fields):
803 if field_map.ret_conv is not None:
804 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
805 out_c += ("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
806 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
807 c_params.append(field_map.ret_conv_name)
809 c_params.append("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
810 out_c += ("\t\t\treturn " + self.c_constr_native_complex_enum(struct_name, var.var_name, c_params) + ";\n")
812 out_c += ("\t\tdefault: abort();\n")
813 out_c += ("\t}\n}\n")
814 out_java_enum += ("}\n")
815 return (out_java, out_java_enum, out_c)
817 def map_opaque_struct(self, struct_name):
818 out_opaque_struct_human = ""
819 out_opaque_struct_human += self.hu_struct_file_prefix
820 out_opaque_struct_human += ("public class " + struct_name.replace("LDK","") + " extends CommonBase")
821 if struct_name.startswith("LDKLocked"):
822 out_opaque_struct_human += (" implements AutoCloseable")
823 out_opaque_struct_human += (" {\n")
824 out_opaque_struct_human += ("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); }\n")
825 if struct_name.startswith("LDKLocked"):
826 out_opaque_struct_human += ("\t@Override public void close() {\n")
828 out_opaque_struct_human += ("\t@Override @SuppressWarnings(\"deprecation\")\n")
829 out_opaque_struct_human += ("\tprotected void finalize() throws Throwable {\n")
830 out_opaque_struct_human += ("\t\tsuper.finalize();\n")
831 out_opaque_struct_human += ("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); }\n")
832 out_opaque_struct_human += ("\t}\n\n")
833 return out_opaque_struct_human
836 def map_function(self, argument_types, c_call_string, is_free, method_name, return_type_info, struct_meth, default_constructor_args, takes_self, args_known, has_out_java_struct: bool, type_mapping_generator):
839 out_java_struct = None
841 out_java += ("\tpublic static native ")
842 out_c += (self.c_fn_ty_pfx)
843 out_c += (return_type_info.c_ty)
844 out_java += (return_type_info.java_ty)
845 if return_type_info.ret_conv is not None:
846 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
847 out_java += (" " + method_name + "(")
848 have_args = len(argument_types) > 1 or (len(argument_types) > 0 and argument_types[0].c_ty != "void")
849 out_c += (" " + self.c_fn_name_define_pfx(method_name, have_args))
851 for idx, arg_conv_info in enumerate(argument_types):
855 if arg_conv_info.c_ty != "void":
856 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
857 out_java += (arg_conv_info.java_ty + " " + arg_conv_info.arg_name)
859 if has_out_java_struct:
862 out_java_struct += ("\t// Skipped " + method_name + "\n")
863 has_out_java_struct = False
865 meth_n = method_name[len(struct_meth) + 1:]
868 "\tpublic static " + return_type_info.java_hu_ty + " constructor_" + meth_n + "(")
870 out_java_struct += ("\tpublic " + return_type_info.java_hu_ty + " " + meth_n + "(")
871 for idx, arg in enumerate(argument_types):
873 if not takes_self or idx > 1:
874 out_java_struct += (", ")
877 if arg.java_ty != "void":
878 if arg.arg_name in default_constructor_args:
879 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
881 out_java_struct += (", ")
883 explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name)
885 out_java_struct += (arg.java_hu_ty + " " + arg.arg_name)
888 if out_java_struct is not None:
889 out_java_struct += (") {\n")
890 for info in argument_types:
891 if info.arg_conv is not None:
892 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
893 if return_type_info.ret_conv is not None:
894 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
895 elif return_type_info.c_ty != "void":
896 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
899 if c_call_string is None:
900 out_c += (method_name + "(")
902 out_c += (c_call_string)
903 for idx, info in enumerate(argument_types):
904 if info.arg_conv_name is not None:
907 elif c_call_string is not None:
909 out_c += (info.arg_conv_name)
911 if return_type_info.ret_conv is not None:
912 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
915 for info in argument_types:
916 if info.arg_conv_cleanup is not None:
917 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
918 if return_type_info.ret_conv is not None:
919 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
920 elif return_type_info.c_ty != "void":
921 out_c += ("\n\treturn ret_val;")
924 if has_out_java_struct:
925 out_java_struct += ("\t\t")
926 if return_type_info.java_ty != "void":
927 out_java_struct += (return_type_info.java_ty + " ret = ")
928 out_java_struct += ("bindings." + method_name + "(")
929 for idx, info in enumerate(argument_types):
931 out_java_struct += (", ")
932 if idx == 0 and takes_self:
933 out_java_struct += ("this.ptr")
934 elif info.arg_name in default_constructor_args:
935 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
936 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
938 out_java_struct += (", ")
939 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
940 if explode_arg.from_hu_conv is not None:
942 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
944 out_java_struct += (expl_arg_name)
945 out_java_struct += (")")
946 elif info.from_hu_conv is not None:
947 out_java_struct += (info.from_hu_conv[0])
949 out_java_struct += (info.arg_name)
950 out_java_struct += (");\n")
951 if return_type_info.to_hu_conv is not None:
953 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
954 return_type_info.to_hu_conv_name) + "\n")
956 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
958 for idx, info in enumerate(argument_types):
959 if idx == 0 and takes_self:
961 elif info.arg_name in default_constructor_args:
962 for explode_arg in default_constructor_args[info.arg_name]:
963 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
964 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
965 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
966 expl_arg_name).replace(
967 "this", return_type_info.to_hu_conv_name) + ";\n")
968 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
969 if not takes_self and return_type_info.to_hu_conv_name is not None:
971 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name) + ";\n")
973 out_java_struct += ("\t\t" + info.from_hu_conv[1] + ";\n")
975 if return_type_info.to_hu_conv_name is not None:
976 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
977 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
978 out_java_struct += ("\t\treturn ret;\n")
979 out_java_struct += ("\t}\n\n")
981 return (out_java, out_c, out_java_struct)