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.util_fn_pfx = """package org.ldk.structs;
55 import org.ldk.impl.bindings;
56 import java.util.Arrays;
58 public class UtilMethods {
60 self.util_fn_sfx = "}"
61 self.common_base = """package org.ldk.structs;
62 import java.util.LinkedList;
65 LinkedList<Object> ptrs_to = new LinkedList();
66 protected CommonBase(long ptr) { this.ptr = ptr; }
67 public long _test_only_get_ptr() { return this.ptr; }
71 self.c_file_pfx = """#include \"org_ldk_impl_bindings.h\"
72 #include <rust_types.h>
73 #include <lightning.h>
75 #include <stdatomic.h>
81 self.c_file_pfx = self.c_file_pfx + """#define MALLOC(a, _) malloc(a)
82 #define FREE(p) if ((long)(p) > 1024) { free(p); }
83 #define DO_ASSERT(a) (void)(a)
87 self.c_file_pfx = self.c_file_pfx + """#include <assert.h>
88 // Always run a, then assert it is true:
89 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
90 // Assert a is true or do nothing
91 #define CHECK(a) DO_ASSERT(a)
93 // Running a leak check across all the allocations and frees of the JDK is a mess,
94 // so instead we implement our own naive leak checker here, relying on the -wrap
95 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
96 // and free'd in Rust or C across the generated bindings shared library.
100 static mtx_t allocation_mtx;
102 void __attribute__((constructor)) init_mtx() {
103 DO_ASSERT(mtx_init(&allocation_mtx, mtx_plain) == thrd_success);
107 typedef struct allocation {
108 struct allocation* next;
110 const char* struct_name;
114 static allocation* allocation_ll = NULL;
116 void* __real_malloc(size_t len);
117 void* __real_calloc(size_t nmemb, size_t len);
118 static void new_allocation(void* res, const char* struct_name) {
119 allocation* new_alloc = __real_malloc(sizeof(allocation));
120 new_alloc->ptr = res;
121 new_alloc->struct_name = struct_name;
122 new_alloc->bt_len = backtrace(new_alloc->bt, BT_MAX);
123 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
124 new_alloc->next = allocation_ll;
125 allocation_ll = new_alloc;
126 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
128 static void* MALLOC(size_t len, const char* struct_name) {
129 void* res = __real_malloc(len);
130 new_allocation(res, struct_name);
133 void __real_free(void* ptr);
134 static void alloc_freed(void* ptr) {
135 allocation* p = NULL;
136 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
137 allocation* it = allocation_ll;
138 while (it->ptr != ptr) {
139 p = it; it = it->next;
141 fprintf(stderr, "Tried to free unknown pointer %p at:\\n", ptr);
143 int bt_len = backtrace(bt, BT_MAX);
144 backtrace_symbols_fd(bt, bt_len, STDERR_FILENO);
145 fprintf(stderr, "\\n\\n");
146 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
147 return; // addrsan should catch malloc-unknown and print more info than we have
150 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
151 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
152 DO_ASSERT(it->ptr == ptr);
155 static void FREE(void* ptr) {
156 if ((long)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys
161 void* __wrap_malloc(size_t len) {
162 void* res = __real_malloc(len);
163 new_allocation(res, "malloc call");
166 void* __wrap_calloc(size_t nmemb, size_t len) {
167 void* res = __real_calloc(nmemb, len);
168 new_allocation(res, "calloc call");
171 void __wrap_free(void* ptr) {
172 if (ptr == NULL) return;
177 void* __real_realloc(void* ptr, size_t newlen);
178 void* __wrap_realloc(void* ptr, size_t len) {
179 if (ptr != NULL) alloc_freed(ptr);
180 void* res = __real_realloc(ptr, len);
181 new_allocation(res, "realloc call");
184 void __wrap_reallocarray(void* ptr, size_t new_sz) {
185 // Rust doesn't seem to use reallocarray currently
189 void __attribute__((destructor)) check_leaks() {
190 size_t alloc_count = 0;
191 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
192 fprintf(stderr, "%s %p remains:\\n", a->struct_name, a->ptr);
193 backtrace_symbols_fd(a->bt, a->bt_len, STDERR_FILENO);
194 fprintf(stderr, "\\n\\n");
197 fprintf(stderr, "%lu allocations remained.\\n", alloc_count);
198 DO_ASSERT(allocation_ll == NULL);
201 self.c_file_pfx = self.c_file_pfx + """
202 static jmethodID ordinal_meth = NULL;
203 static jmethodID slicedef_meth = NULL;
204 static jclass slicedef_cls = NULL;
205 JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class, jclass slicedef_class) {
206 ordinal_meth = (*env)->GetMethodID(env, enum_class, "ordinal", "()I");
207 CHECK(ordinal_meth != NULL);
208 slicedef_meth = (*env)->GetMethodID(env, slicedef_class, "<init>", "(JJJ)V");
209 CHECK(slicedef_meth != NULL);
210 slicedef_cls = (*env)->NewGlobalRef(env, slicedef_class);
211 CHECK(slicedef_cls != NULL);
214 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_deref_1bool (JNIEnv * env, jclass _a, jlong ptr) {
215 return *((bool*)ptr);
217 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_deref_1long (JNIEnv * env, jclass _a, jlong ptr) {
218 return *((long*)ptr);
220 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_free_1heap_1ptr (JNIEnv * env, jclass _a, jlong ptr) {
223 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_read_1bytes (JNIEnv * env, jclass _b, jlong ptr, jlong len) {
224 jbyteArray ret_arr = (*env)->NewByteArray(env, len);
225 (*env)->SetByteArrayRegion(env, ret_arr, 0, len, (unsigned char*)ptr);
228 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes (JNIEnv * env, jclass _b, jlong slice_ptr) {
229 LDKu8slice *slice = (LDKu8slice*)slice_ptr;
230 jbyteArray ret_arr = (*env)->NewByteArray(env, slice->datalen);
231 (*env)->SetByteArrayRegion(env, ret_arr, 0, slice->datalen, slice->data);
234 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_bytes_1to_1u8_1vec (JNIEnv * env, jclass _b, jbyteArray bytes) {
235 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8");
236 vec->datalen = (*env)->GetArrayLength(env, bytes);
237 vec->data = (uint8_t*)MALLOC(vec->datalen, "LDKCVec_u8Z Bytes");
238 (*env)->GetByteArrayRegion (env, bytes, 0, vec->datalen, vec->data);
241 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_txpointer_1get_1buffer (JNIEnv * env, jclass _b, jlong ptr) {
242 LDKTransaction *txdata = (LDKTransaction*)ptr;
244 slice.data = txdata->data;
245 slice.datalen = txdata->datalen;
246 return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (long)&slice);
248 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data (JNIEnv * env, jclass _b, jbyteArray bytes) {
249 LDKTransaction *txdata = (LDKTransaction*)MALLOC(sizeof(LDKTransaction), "LDKTransaction");
250 txdata->datalen = (*env)->GetArrayLength(env, bytes);
251 txdata->data = (uint8_t*)MALLOC(txdata->datalen, "Tx Data Bytes");
252 txdata->data_is_owned = false;
253 (*env)->GetByteArrayRegion (env, bytes, 0, txdata->datalen, txdata->data);
256 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_txpointer_1free (JNIEnv * env, jclass _b, jlong ptr) {
257 LDKTransaction *tx = (LDKTransaction*)ptr;
258 tx->data_is_owned = true;
259 Transaction_free(*tx);
262 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_vec_1slice_1len (JNIEnv * env, jclass _a, jlong ptr) {
263 // Check offsets of a few Vec types are all consistent as we're meant to be generic across types
264 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_SignatureZ, datalen), "Vec<*> needs to be mapped identically");
265 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_MessageSendEventZ, datalen), "Vec<*> needs to be mapped identically");
266 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_EventZ, datalen), "Vec<*> needs to be mapped identically");
267 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_C2Tuple_usizeTransactionZZ, datalen), "Vec<*> needs to be mapped identically");
268 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)ptr;
269 return (long)vec->datalen;
271 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1empty_1slice_1vec (JNIEnv * env, jclass _b) {
272 // Check sizes of a few Vec types are all consistent as we're meant to be generic across types
273 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_SignatureZ), "Vec<*> needs to be mapped identically");
274 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_MessageSendEventZ), "Vec<*> needs to be mapped identically");
275 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_EventZ), "Vec<*> needs to be mapped identically");
276 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_C2Tuple_usizeTransactionZZ), "Vec<*> needs to be mapped identically");
277 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "Empty LDKCVec");
283 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
284 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
285 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
286 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
288 _Static_assert(sizeof(jlong) == sizeof(int64_t), "We assume that j-types are the same as C types");
289 _Static_assert(sizeof(jbyte) == sizeof(char), "We assume that j-types are the same as C types");
290 _Static_assert(sizeof(void*) <= 8, "Pointers must fit into 64 bits");
292 typedef jlongArray int64_tArray;
293 typedef jbyteArray int8_tArray;
295 static inline jstring str_ref_to_java(JNIEnv *env, const char* chars, size_t len) {
296 // Sadly we need to create a temporary because Java can't accept a char* without a 0-terminator
297 char* err_buf = MALLOC(len + 1, "str conv buf");
298 memcpy(err_buf, chars, len);
300 jstring err_conv = (*env)->NewStringUTF(env, chars);
306 self.hu_struct_file_prefix = """package org.ldk.structs;
308 import org.ldk.impl.bindings;
309 import org.ldk.enums.*;
310 import org.ldk.util.*;
311 import java.util.Arrays;
313 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
315 self.c_fn_ty_pfx = "JNIEXPORT "
316 self.c_fn_args_pfx = "JNIEnv *env, jclass clz"
317 self.file_ext = ".java"
318 self.ptr_c_ty = "int64_t"
319 self.ptr_native_ty = "long"
320 self.result_c_ty = "jclass"
321 self.ptr_arr = "jobjectArray"
322 self.get_native_arr_len_call = ("(*env)->GetArrayLength(env, ", ")")
324 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
325 if ty_info.subty is None or not ty_info.subty.c_ty.endswith("Array"):
326 return "(*env)->ReleasePrimitiveArrayCritical(env, " + arr_var + ", " + arr_ptr_var + ", 0)"
328 def create_native_arr_call(self, arr_len, ty_info):
329 if ty_info.c_ty == "int8_tArray":
330 return "(*env)->NewByteArray(env, " + arr_len + ")"
331 elif ty_info.subty.c_ty.endswith("Array"):
332 clz_var = ty_info.java_fn_ty_arg[1:].replace("[", "arr_of_")
333 self.c_array_class_caches.add(clz_var)
334 return "(*env)->NewObjectArray(env, " + arr_len + ", " + clz_var + "_clz, NULL);\n"
336 return "(*env)->New" + ty_info.java_ty.strip("[]").title() + "Array(env, " + arr_len + ")"
337 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
338 if ty_info.c_ty == "int8_tArray":
339 return ("(*env)->SetByteArrayRegion(env, " + arr_name + ", 0, " + arr_len + ", ", ")")
342 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
343 if ty_info.c_ty == "int8_tArray":
345 return "(*env)->GetByteArrayRegion(env, " + arr_name + ", 0, " + arr_len + ", " + dest_name + ")"
347 return "(*env)->GetByteArrayElements (env, " + arr_name + ", NULL)"
348 elif not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
349 return "(*env)->Get" + ty_info.subty.java_ty.title() + "ArrayElements (env, " + arr_name + ", NULL)"
352 def get_native_arr_elem(self, arr_name, idxc, ty_info):
353 if self.get_native_arr_contents(arr_name, "", "", ty_info, False) is None:
354 return "(*env)->GetObjectArrayElement(env, " + arr_name + ", " + idxc + ")"
356 assert False # Only called if above is None
357 def get_native_arr_ptr_call(self, ty_info):
358 if ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array"):
360 return ("(*env)->GetPrimitiveArrayCritical(env, ", ", NULL)")
361 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
362 if ty_info.subty is None or not ty_info.subty.c_ty.endswith("Array"):
364 return "(*env)->SetObjectArrayElement(env, " + arr_name + ", " + idxc + ", " + entry_access + ")"
365 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
366 if ty_info.c_ty == "int8_tArray":
367 return "(*env)->ReleaseByteArrayElements(env, " + arr_name + ", (int8_t*)" + dest_name + ", 0);"
369 return "(*env)->Release" + ty_info.java_ty.strip("[]").title() + "ArrayElements(env, " + arr_name + ", " + dest_name + ", 0)"
371 def str_ref_to_c_call(self, var_name, str_len):
372 return "str_ref_to_java(env, " + var_name + ", " + str_len + ")"
374 def c_fn_name_define_pfx(self, fn_name, has_args):
376 return "JNICALL Java_org_ldk_impl_bindings_" + fn_name.replace("_", "_1") + "(JNIEnv *env, jclass clz, "
377 return "JNICALL Java_org_ldk_impl_bindings_" + fn_name.replace("_", "_1") + "(JNIEnv *env, jclass clz"
381 for ty in self.c_array_class_caches:
382 res = res + "static jclass " + ty + "_clz = NULL;\n"
383 res = res + "JNIEXPORT void Java_org_ldk_impl_bindings_init_1class_1cache(JNIEnv * env, jclass clz) {\n"
384 for ty in self.c_array_class_caches:
385 res = res + "\t" + ty + "_clz = (*env)->FindClass(env, \"" + ty.replace("arr_of_", "[") + "\");\n"
386 res = res + "\tCHECK(" + ty + "_clz != NULL);\n"
387 res = res + "\t" + ty + "_clz = (*env)->NewGlobalRef(env, " + ty + "_clz);\n"
391 def native_c_unitary_enum_map(self, struct_name, variants):
392 out_java_enum = "package org.ldk.enums;\n\n"
395 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_from_java(" + self.c_fn_args_pfx + ") {\n"
396 out_c = out_c + "\tswitch ((*env)->CallIntMethod(env, clz, ordinal_meth)) {\n"
398 out_java_enum = out_java_enum + "public enum " + struct_name + " {\n"
401 out_java_enum = out_java_enum + "\t" + var + ",\n"
402 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
404 out_java_enum = out_java_enum + "\t; static native void init();\n"
405 out_java_enum = out_java_enum + "\tstatic { init(); }\n"
406 out_java_enum = out_java_enum + "}"
407 out_java = out_java + "\tstatic { " + struct_name + ".values(); /* Force enum statics to run */ }\n"
408 out_c = out_c + "\t}\n"
409 out_c = out_c + "\tabort();\n"
410 out_c = out_c + "}\n"
412 out_c = out_c + "static jclass " + struct_name + "_class = NULL;\n"
414 out_c = out_c + "static jfieldID " + struct_name + "_" + var + " = NULL;\n"
415 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"
416 out_c = out_c + "\t" + struct_name + "_class = (*env)->NewGlobalRef(env, clz);\n"
417 out_c = out_c + "\tCHECK(" + struct_name + "_class != NULL);\n"
419 out_c = out_c + "\t" + struct_name + "_" + var + " = (*env)->GetStaticFieldID(env, " + struct_name + "_class, \"" + var + "\", \"Lorg/ldk/enums/" + struct_name + ";\");\n"
420 out_c = out_c + "\tCHECK(" + struct_name + "_" + var + " != NULL);\n"
421 out_c = out_c + "}\n"
422 out_c = out_c + "static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\n"
423 out_c = out_c + "\tswitch (val) {\n"
426 out_c = out_c + "\t\tcase " + var + ":\n"
427 out_c = out_c + "\t\t\treturn (*env)->GetStaticObjectField(env, " + struct_name + "_class, " + struct_name + "_" + var + ");\n"
429 out_c = out_c + "\t\tdefault: abort();\n"
430 out_c = out_c + "\t}\n"
431 out_c = out_c + "}\n\n"
433 return (out_c, out_java_enum, out_java)
435 def c_unitary_enum_to_native_call(self, ty_info):
436 return (ty_info.rust_obj + "_to_java(env, ", ")")
437 def native_unitary_enum_to_c_call(self, ty_info):
438 return (ty_info.rust_obj + "_from_java(env, ", ")")
440 def c_complex_enum_pfx(self, struct_name, variants, init_meth_jty_strs):
443 out_c = out_c + "static jclass " + struct_name + "_" + var + "_class = NULL;\n"
444 out_c = out_c + "static jmethodID " + struct_name + "_" + var + "_meth = NULL;\n"
445 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"
446 for var_name in variants:
447 out_c = out_c + "\t" + struct_name + "_" + var_name + "_class =\n"
448 out_c = out_c + "\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + struct_name + "$" + var_name + ";\"));\n"
449 out_c = out_c + "\tCHECK(" + struct_name + "_" + var_name + "_class != NULL);\n"
450 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"
451 out_c = out_c + "\tCHECK(" + struct_name + "_" + var_name + "_meth != NULL);\n"
452 out_c = out_c + "}\n"
455 def c_complex_enum_pass_ty(self, struct_name):
458 def c_constr_native_complex_enum(self, struct_name, variant, c_params):
459 ret = "(*env)->NewObject(env, " + struct_name + "_" + variant + "_class, " + struct_name + "_" + variant + "_meth"
460 for param in c_params:
461 ret = ret + ", " + param
464 def native_c_map_trait(self, struct_name, field_vars, field_fns):
468 # First generate most of the Java code, note that we need information about java method argument strings for C
469 out_java_trait = out_java_trait + self.hu_struct_file_prefix
470 out_java_trait = out_java_trait + "public class " + struct_name.replace("LDK","") + " extends CommonBase {\n"
471 out_java_trait = out_java_trait + "\tfinal bindings." + struct_name + " bindings_instance;\n"
472 out_java_trait = out_java_trait + "\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }\n"
473 out_java_trait = out_java_trait + "\tprivate " + struct_name.replace("LDK", "") + "(bindings." + struct_name + " arg"
474 for var in field_vars:
475 if isinstance(var, ConvInfo):
476 out_java_trait = out_java_trait + ", " + var.java_hu_ty + " " + var.arg_name
478 out_java_trait = out_java_trait + ", bindings." + var[0] + " " + var[1]
479 out_java_trait = out_java_trait + ") {\n"
480 out_java_trait = out_java_trait + "\t\tsuper(bindings." + struct_name + "_new(arg"
481 for var in field_vars:
482 if isinstance(var, ConvInfo):
483 if var.from_hu_conv is not None:
484 out_java_trait = out_java_trait + ", " + var.from_hu_conv[0]
486 out_java_trait = out_java_trait + ", " + var.arg_name
488 out_java_trait = out_java_trait + ", " + var[1]
489 out_java_trait = out_java_trait + "));\n"
490 out_java_trait = out_java_trait + "\t\tthis.ptrs_to.add(arg);\n"
491 for var in field_vars:
492 if isinstance(var, ConvInfo):
493 if var.from_hu_conv is not None and var.from_hu_conv[1] != "":
494 out_java_trait = out_java_trait + "\t\t" + var.from_hu_conv[1] + ";\n"
496 out_java_trait = out_java_trait + "\t\tthis.ptrs_to.add(" + var[1] + ");\n"
497 out_java_trait = out_java_trait + "\t\tthis.bindings_instance = arg;\n"
498 out_java_trait = out_java_trait + "\t}\n"
499 out_java_trait = out_java_trait + "\t@Override @SuppressWarnings(\"deprecation\")\n"
500 out_java_trait = out_java_trait + "\tprotected void finalize() throws Throwable {\n"
501 out_java_trait = out_java_trait + "\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); } super.finalize();\n"
502 out_java_trait = out_java_trait + "\t}\n\n"
504 java_trait_constr = "\tprivate static class " + struct_name + "Holder { " + struct_name.replace("LDK", "") + " held; }\n"
505 java_trait_constr = java_trait_constr + "\tpublic static " + struct_name.replace("LDK", "") + " new_impl(" + struct_name.replace("LDK", "") + "Interface arg"
506 for var in field_vars:
507 if isinstance(var, ConvInfo):
508 java_trait_constr = java_trait_constr + ", " + var.java_hu_ty + " " + var.arg_name
510 # Ideally we'd be able to take any instance of the interface, but our C code can only represent
511 # Java-implemented version, so we require users pass a Java implementation here :/
512 java_trait_constr = java_trait_constr + ", " + var[0].replace("LDK", "") + "." + var[0].replace("LDK", "") + "Interface " + var[1] + "_impl"
513 java_trait_constr = java_trait_constr + ") {\n\t\tfinal " + struct_name + "Holder impl_holder = new " + struct_name + "Holder();\n"
514 java_trait_constr = java_trait_constr + "\t\timpl_holder.held = new " + struct_name.replace("LDK", "") + "(new bindings." + struct_name + "() {\n"
515 out_java_trait = out_java_trait + "\tpublic static interface " + struct_name.replace("LDK", "") + "Interface {\n"
516 out_java = out_java + "\tpublic interface " + struct_name + " {\n"
518 for fn_line in field_fns:
519 java_meth_descr = "("
520 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
521 out_java = out_java + "\t\t " + fn_line.ret_ty_info.java_ty + " " + fn_line.fn_name + "("
522 java_trait_constr = java_trait_constr + "\t\t\t@Override public " + fn_line.ret_ty_info.java_ty + " " + fn_line.fn_name + "("
523 out_java_trait = out_java_trait + "\t\t" + fn_line.ret_ty_info.java_hu_ty + " " + fn_line.fn_name + "("
525 for idx, arg_conv_info in enumerate(fn_line.args_ty):
527 out_java = out_java + ", "
528 java_trait_constr = java_trait_constr + ", "
529 out_java_trait = out_java_trait + ", "
530 out_java = out_java + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
531 out_java_trait = out_java_trait + arg_conv_info.java_hu_ty + " " + arg_conv_info.arg_name
532 java_trait_constr = java_trait_constr + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
533 java_meth_descr = java_meth_descr + arg_conv_info.java_fn_ty_arg
534 java_meth_descr = java_meth_descr + ")" + fn_line.ret_ty_info.java_fn_ty_arg
535 java_meths.append((fn_line.fn_name, java_meth_descr))
537 out_java = out_java + ");\n"
538 out_java_trait = out_java_trait + ");\n"
539 java_trait_constr = java_trait_constr + ") {\n"
541 for arg_info in fn_line.args_ty:
542 if arg_info.to_hu_conv is not None:
543 java_trait_constr = java_trait_constr + "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
545 if fn_line.ret_ty_info.java_ty != "void":
546 java_trait_constr = java_trait_constr + "\t\t\t\t" + fn_line.ret_ty_info.java_hu_ty + " ret = arg." + fn_line.fn_name + "("
548 java_trait_constr = java_trait_constr + "\t\t\t\targ." + fn_line.fn_name + "("
550 for idx, arg_info in enumerate(fn_line.args_ty):
552 java_trait_constr = java_trait_constr + ", "
553 if arg_info.to_hu_conv_name is not None:
554 java_trait_constr = java_trait_constr + arg_info.to_hu_conv_name
556 java_trait_constr = java_trait_constr + arg_info.arg_name
558 java_trait_constr = java_trait_constr + ");\n"
559 if fn_line.ret_ty_info.java_ty != "void":
560 if fn_line.ret_ty_info.from_hu_conv is not None:
561 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"
562 if fn_line.ret_ty_info.from_hu_conv[1] != "":
563 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"
564 #if fn_line.ret_ty_info.rust_obj in result_types:
565 java_trait_constr = java_trait_constr + "\t\t\t\treturn result;\n"
567 java_trait_constr = java_trait_constr + "\t\t\t\treturn ret;\n"
568 java_trait_constr = java_trait_constr + "\t\t\t}\n"
569 java_trait_constr = java_trait_constr + "\t\t}"
570 for var in field_vars:
571 if isinstance(var, ConvInfo):
572 java_trait_constr = java_trait_constr + ", " + var.arg_name
574 java_trait_constr = java_trait_constr + ", " + var[1] + ".new_impl(" + var[1] + "_impl).bindings_instance"
575 out_java_trait = out_java_trait + "\t}\n"
576 out_java_trait = out_java_trait + java_trait_constr + ");\n\t\treturn impl_holder.held;\n\t}\n"
578 out_java = out_java + "\t}\n"
580 out_java = out_java + "\tpublic static native long " + struct_name + "_new(" + struct_name + " impl"
581 for var in field_vars:
582 if isinstance(var, ConvInfo):
583 out_java = out_java + ", " + var.java_ty + " " + var.arg_name
585 out_java = out_java + ", " + var[0] + " " + var[1]
586 out_java = out_java + ");\n"
588 # Now that we've written out our java code (and created java_meths), generate C
589 out_c = "typedef struct " + struct_name + "_JCalls {\n"
590 out_c = out_c + "\tatomic_size_t refcnt;\n"
591 out_c = out_c + "\tJavaVM *vm;\n"
592 out_c = out_c + "\tjweak o;\n"
593 for var in field_vars:
594 if isinstance(var, ConvInfo):
595 # We're a regular ol' field
599 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
601 if fn.fn_name != "free" and fn.fn_name != "clone":
602 out_c = out_c + "\tjmethodID " + fn.fn_name + "_meth;\n"
603 out_c = out_c + "} " + struct_name + "_JCalls;\n"
605 for fn_line in field_fns:
606 if fn_line.fn_name == "free":
607 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
608 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
609 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
610 out_c = out_c + "\t\tJNIEnv *env;\n"
611 out_c = out_c + "\t\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);\n"
612 out_c = out_c + "\t\t(*env)->DeleteWeakGlobalRef(env, j_calls->o);\n"
613 out_c = out_c + "\t\tFREE(j_calls);\n"
614 out_c = out_c + "\t}\n}\n"
616 for idx, fn_line in enumerate(field_fns):
617 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
618 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
619 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_jcall("
620 if fn_line.self_is_const:
621 out_c = out_c + "const void* this_arg"
623 out_c = out_c + "void* this_arg"
625 for idx, arg in enumerate(fn_line.args_ty):
626 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
628 out_c = out_c + ") {\n"
629 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
630 out_c = out_c + "\tJNIEnv *env;\n"
631 out_c = out_c + "\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);\n"
633 for arg_info in fn_line.args_ty:
634 if arg_info.ret_conv is not None:
635 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
636 out_c = out_c + arg_info.arg_name
637 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
639 out_c = out_c + "\tjobject obj = (*env)->NewLocalRef(env, j_calls->o);\n\tCHECK(obj != NULL);\n"
640 if fn_line.ret_ty_info.c_ty.endswith("Array"):
641 out_c = out_c + "\t" + fn_line.ret_ty_info.c_ty + " arg = (*env)->CallObjectMethod(env, obj, j_calls->" + fn_line.fn_name + "_meth"
642 elif not fn_line.ret_ty_info.passed_as_ptr:
643 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"
645 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"
647 for idx, arg_info in enumerate(fn_line.args_ty):
648 if arg_info.ret_conv is not None:
649 out_c = out_c + ", " + arg_info.ret_conv_name
651 out_c = out_c + ", " + arg_info.arg_name
652 out_c = out_c + ");\n"
653 if fn_line.ret_ty_info.arg_conv is not None:
654 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"
656 out_c = out_c + "}\n"
658 # Write out a clone function whether we need one or not, as we use them in moving to rust
659 out_c = out_c + "static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n"
660 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
661 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
662 for var in field_vars:
663 if not isinstance(var, ConvInfo):
664 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
665 out_c = out_c + "\treturn (void*) this_arg;\n"
666 out_c = out_c + "}\n"
668 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (" + self.c_fn_args_pfx + ", jobject o"
669 for var in field_vars:
670 if isinstance(var, ConvInfo):
671 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
673 out_c = out_c + ", jobject " + var[1]
674 out_c = out_c + ") {\n"
676 out_c = out_c + "\tjclass c = (*env)->GetObjectClass(env, o);\n"
677 out_c = out_c + "\tCHECK(c != NULL);\n"
678 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
679 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
680 out_c = out_c + "\tDO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);\n"
681 out_c = out_c + "\tcalls->o = (*env)->NewWeakGlobalRef(env, o);\n"
683 for (fn_name, java_meth_descr) in java_meths:
684 if fn_name != "free" and fn_name != "clone":
685 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
686 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
688 for var in field_vars:
689 if isinstance(var, ConvInfo) and var.arg_conv is not None:
690 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
691 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
692 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
693 for fn_line in field_fns:
694 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
695 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_jcall,\n"
696 elif fn_line.fn_name == "free":
697 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
699 out_c = out_c + "\t\t.clone = " + struct_name + "_JCalls_clone,\n"
700 for var in field_vars:
701 if isinstance(var, ConvInfo):
702 if var.arg_conv_name is not None:
703 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
704 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
706 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
707 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
709 out_c = out_c + "\t\t." + var[1] + " = " + var[0] + "_init(env, clz, " + var[1] + "),\n"
710 out_c = out_c + "\t};\n"
711 for var in field_vars:
712 if not isinstance(var, ConvInfo):
713 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
714 out_c = out_c + "\treturn ret;\n"
715 out_c = out_c + "}\n"
717 out_c = out_c + self.c_fn_ty_pfx + "long " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "jobject o"
718 for var in field_vars:
719 if isinstance(var, ConvInfo):
720 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
722 out_c = out_c + ", jobject " + var[1]
723 out_c = out_c + ") {\n"
724 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
725 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(env, clz, o"
726 for var in field_vars:
727 if isinstance(var, ConvInfo):
728 out_c = out_c + ", " + var.arg_name
730 out_c = out_c + ", " + var[1]
731 out_c = out_c + ");\n"
732 out_c = out_c + "\treturn (long)res_ptr;\n"
733 out_c = out_c + "}\n"
735 return (out_java, out_java_trait, out_c)
737 def trait_struct_inc_refcnt(self, ty_info):
738 base_conv = "\nif (" + ty_info.var_name + "_conv.free == " + ty_info.rust_obj + "_JCalls_free) {\n"
739 base_conv = base_conv + "\t// If this_arg is a JCalls struct, then we need to increment the refcnt in it.\n"
740 base_conv = base_conv + "\t" + ty_info.rust_obj + "_JCalls_clone(" + ty_info.var_name + "_conv.this_arg);\n}"
743 def map_complex_enum(self, struct_name, variant_list, camel_to_snake):
744 java_hu_type = struct_name.replace("LDK", "")
749 out_java_enum += (self.hu_struct_file_prefix)
750 out_java_enum += ("public class " + java_hu_type + " extends CommonBase {\n")
751 out_java_enum += ("\tprivate " + java_hu_type + "(Object _dummy, long ptr) { super(ptr); }\n")
752 out_java_enum += ("\t@Override @SuppressWarnings(\"deprecation\")\n")
753 out_java_enum += ("\tprotected void finalize() throws Throwable {\n")
754 out_java_enum += ("\t\tsuper.finalize();\n")
755 out_java_enum += ("\t\tif (ptr != 0) { bindings." + java_hu_type + "_free(ptr); }\n")
756 out_java_enum += ("\t}\n")
757 out_java_enum += ("\tstatic " + java_hu_type + " constr_from_ptr(long ptr) {\n")
758 out_java_enum += ("\t\tbindings." + struct_name + " raw_val = bindings." + struct_name + "_ref_from_ptr(ptr);\n")
759 java_hu_subclasses = ""
761 init_meth_jty_strs = {}
763 out_java += ("\tpublic static class " + struct_name + " {\n")
764 out_java += ("\t\tprivate " + struct_name + "() {}\n")
765 for var in variant_list:
766 out_java += ("\t\tpublic final static class " + var.var_name + " extends " + struct_name + " {\n")
767 java_hu_subclasses = java_hu_subclasses + "\tpublic final static class " + var.var_name + " extends " + java_hu_type + " {\n"
768 out_java_enum += ("\t\tif (raw_val.getClass() == bindings." + struct_name + "." + var.var_name + ".class) {\n")
769 out_java_enum += ("\t\t\treturn new " + var.var_name + "(ptr, (bindings." + struct_name + "." + var.var_name + ")raw_val);\n")
770 init_meth_jty_str = ""
771 init_meth_params = ""
774 for idx, field_ty in enumerate(var.fields):
775 out_java += ("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.arg_name + ";\n")
776 java_hu_subclasses = java_hu_subclasses + "\t\tpublic final " + field_ty.java_hu_ty + " " + field_ty.arg_name + ";\n"
777 if field_ty.to_hu_conv is not None:
778 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.java_ty + " " + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
779 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
780 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
782 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
783 init_meth_jty_str = init_meth_jty_str + field_ty.java_fn_ty_arg
785 init_meth_params = init_meth_params + ", "
786 init_meth_params = init_meth_params + field_ty.java_ty + " " + field_ty.arg_name
787 init_meth_body = init_meth_body + "this." + field_ty.arg_name + " = " + field_ty.arg_name + "; "
788 out_java += ("\t\t\t" + var.var_name + "(" + init_meth_params + ") { ")
789 out_java += (init_meth_body)
791 out_java += ("\t\t}\n")
792 out_java_enum += ("\t\t}\n")
793 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"
794 java_hu_subclasses = java_hu_subclasses + hu_conv_body
795 java_hu_subclasses = java_hu_subclasses + "\t\t}\n\t}\n"
796 init_meth_jty_strs[var.var_name] = init_meth_jty_str
797 out_java += ("\t\tstatic native void init();\n")
798 out_java += ("\t}\n")
799 out_java_enum += ("\t\tassert false; return null; // Unreachable without extending the (internal) bindings interface\n\t}\n\n")
800 out_java_enum += (java_hu_subclasses)
801 out_java += ("\tstatic { " + struct_name + ".init(); }\n")
802 out_java += ("\tpublic static native " + struct_name + " " + struct_name + "_ref_from_ptr(long ptr);\n");
804 out_c += (self.c_complex_enum_pfx(struct_name, [x.var_name for x in variant_list], init_meth_jty_strs))
806 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")
807 out_c += ("\t" + struct_name + " *obj = (" + struct_name + "*)ptr;\n")
808 out_c += ("\tswitch(obj->tag) {\n")
809 for var in variant_list:
810 out_c += ("\t\tcase " + struct_name + "_" + var.var_name + ": {\n")
812 for idx, field_map in enumerate(var.fields):
813 if field_map.ret_conv is not None:
814 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
815 out_c += ("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
816 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
817 c_params.append(field_map.ret_conv_name)
819 c_params.append("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
820 out_c += ("\t\t\treturn " + self.c_constr_native_complex_enum(struct_name, var.var_name, c_params) + ";\n")
822 out_c += ("\t\tdefault: abort();\n")
823 out_c += ("\t}\n}\n")
824 out_java_enum += ("}\n")
825 return (out_java, out_java_enum, out_c)
827 def map_opaque_struct(self, struct_name):
828 out_opaque_struct_human = ""
829 out_opaque_struct_human += self.hu_struct_file_prefix
830 out_opaque_struct_human += ("public class " + struct_name.replace("LDK","") + " extends CommonBase")
831 if struct_name.startswith("LDKLocked"):
832 out_opaque_struct_human += (" implements AutoCloseable")
833 out_opaque_struct_human += (" {\n")
834 out_opaque_struct_human += ("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); }\n")
835 if struct_name.startswith("LDKLocked"):
836 out_opaque_struct_human += ("\t@Override public void close() {\n")
838 out_opaque_struct_human += ("\t@Override @SuppressWarnings(\"deprecation\")\n")
839 out_opaque_struct_human += ("\tprotected void finalize() throws Throwable {\n")
840 out_opaque_struct_human += ("\t\tsuper.finalize();\n")
841 out_opaque_struct_human += ("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); }\n")
842 out_opaque_struct_human += ("\t}\n\n")
843 return out_opaque_struct_human
846 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):
849 out_java_struct = None
851 out_java += ("\tpublic static native ")
852 out_c += (self.c_fn_ty_pfx)
853 out_c += (return_type_info.c_ty)
854 out_java += (return_type_info.java_ty)
855 if return_type_info.ret_conv is not None:
856 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
857 out_java += (" " + method_name + "(")
858 have_args = len(argument_types) > 1 or (len(argument_types) > 0 and argument_types[0].c_ty != "void")
859 out_c += (" " + self.c_fn_name_define_pfx(method_name, have_args))
861 for idx, arg_conv_info in enumerate(argument_types):
865 if arg_conv_info.c_ty != "void":
866 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
867 out_java += (arg_conv_info.java_ty + " " + arg_conv_info.arg_name)
871 out_java_struct += ("\t// Skipped " + method_name + "\n")
873 meth_n = method_name[len(struct_meth) + 1:]
876 "\tpublic static " + return_type_info.java_hu_ty + " constructor_" + meth_n + "(")
878 out_java_struct += ("\tpublic " + return_type_info.java_hu_ty + " " + meth_n + "(")
879 for idx, arg in enumerate(argument_types):
881 if not takes_self or idx > 1:
882 out_java_struct += (", ")
885 if arg.java_ty != "void":
886 if arg.arg_name in default_constructor_args:
887 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
889 out_java_struct += (", ")
891 explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name)
893 out_java_struct += (arg.java_hu_ty + " " + arg.arg_name)
896 if out_java_struct is not None:
897 out_java_struct += (") {\n")
898 for info in argument_types:
899 if info.arg_conv is not None:
900 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
901 if return_type_info.ret_conv is not None:
902 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
903 elif return_type_info.c_ty != "void":
904 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
907 if c_call_string is None:
908 out_c += (method_name + "(")
910 out_c += (c_call_string)
911 for idx, info in enumerate(argument_types):
912 if info.arg_conv_name is not None:
915 elif c_call_string is not None:
917 out_c += (info.arg_conv_name)
919 if return_type_info.ret_conv is not None:
920 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
923 for info in argument_types:
924 if info.arg_conv_cleanup is not None:
925 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
926 if return_type_info.ret_conv is not None:
927 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
928 elif return_type_info.c_ty != "void":
929 out_c += ("\n\treturn ret_val;")
933 out_java_struct += ("\t\t")
934 if return_type_info.java_ty != "void":
935 out_java_struct += (return_type_info.java_ty + " ret = ")
936 out_java_struct += ("bindings." + method_name + "(")
937 for idx, info in enumerate(argument_types):
939 out_java_struct += (", ")
940 if idx == 0 and takes_self:
941 out_java_struct += ("this.ptr")
942 elif info.arg_name in default_constructor_args:
943 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
944 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
946 out_java_struct += (", ")
947 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
948 if explode_arg.from_hu_conv is not None:
950 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
952 out_java_struct += (expl_arg_name)
953 out_java_struct += (")")
954 elif info.from_hu_conv is not None:
955 out_java_struct += (info.from_hu_conv[0])
957 out_java_struct += (info.arg_name)
958 out_java_struct += (");\n")
959 if return_type_info.to_hu_conv is not None:
961 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
962 return_type_info.to_hu_conv_name) + "\n")
964 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
966 for idx, info in enumerate(argument_types):
967 if idx == 0 and takes_self:
969 elif info.arg_name in default_constructor_args:
970 for explode_arg in default_constructor_args[info.arg_name]:
971 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
972 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
973 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
974 expl_arg_name).replace(
975 "this", return_type_info.to_hu_conv_name) + ";\n")
976 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
977 if not takes_self and return_type_info.to_hu_conv_name is not None:
979 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name) + ";\n")
981 out_java_struct += ("\t\t" + info.from_hu_conv[1] + ";\n")
983 if return_type_info.to_hu_conv_name is not None:
984 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
985 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
986 out_java_struct += ("\t\treturn ret;\n")
987 out_java_struct += ("\t}\n\n")
989 return (out_java, out_c, out_java_struct)