5 print("USAGE: /path/to/lightning.h /path/to/bindings/output.java /path/to/bindings/ /path/to/bindings/output.c debug")
6 print("debug should be true or false and indicates whether to track allocations and ensure we don't leak")
9 hu_struct_file_prefix = """package org.ldk.structs;
11 import org.ldk.impl.bindings;
12 import org.ldk.enums.*;
13 import org.ldk.util.*;
14 import java.util.Arrays;
16 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
19 c_file_pfx = """#include \"org_ldk_impl_bindings.h\"
20 #include <rust_types.h>
21 #include <lightning.h>
23 #include <stdatomic.h>
26 if sys.argv[5] == "false":
27 c_file_pfx = c_file_pfx + """#define MALLOC(a, _) malloc(a)
28 #define FREE(p) if ((long)(p) > 1024) { free(p); }
29 #define DO_ASSERT(a) (void)(a)
33 c_file_pfx = c_file_pfx + """#include <assert.h>
34 // Always run a, then assert it is true:
35 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
36 // Assert a is true or do nothing
37 #define CHECK(a) DO_ASSERT(a)
39 // Running a leak check across all the allocations and frees of the JDK is a mess,
40 // so instead we implement our own naive leak checker here, relying on the -wrap
41 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
42 // and free'd in Rust or C across the generated bindings shared library.
46 static mtx_t allocation_mtx;
48 void __attribute__((constructor)) init_mtx() {
49 DO_ASSERT(mtx_init(&allocation_mtx, mtx_plain) == thrd_success);
53 typedef struct allocation {
54 struct allocation* next;
56 const char* struct_name;
60 static allocation* allocation_ll = NULL;
62 void* __real_malloc(size_t len);
63 void* __real_calloc(size_t nmemb, size_t len);
64 static void new_allocation(void* res, const char* struct_name) {
65 allocation* new_alloc = __real_malloc(sizeof(allocation));
67 new_alloc->struct_name = struct_name;
68 new_alloc->bt_len = backtrace(new_alloc->bt, BT_MAX);
69 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
70 new_alloc->next = allocation_ll;
71 allocation_ll = new_alloc;
72 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
74 static void* MALLOC(size_t len, const char* struct_name) {
75 void* res = __real_malloc(len);
76 new_allocation(res, struct_name);
79 void __real_free(void* ptr);
80 static void alloc_freed(void* ptr) {
82 DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success);
83 allocation* it = allocation_ll;
84 while (it->ptr != ptr) {
85 p = it; it = it->next;
87 fprintf(stderr, "Tried to free unknown pointer %p at:\\n", ptr);
89 int bt_len = backtrace(bt, BT_MAX);
90 backtrace_symbols_fd(bt, bt_len, STDERR_FILENO);
91 fprintf(stderr, "\\n\\n");
92 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
93 return; // addrsan should catch malloc-unknown and print more info than we have
96 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
97 DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
98 DO_ASSERT(it->ptr == ptr);
101 static void FREE(void* ptr) {
102 if ((long)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys
107 void* __wrap_malloc(size_t len) {
108 void* res = __real_malloc(len);
109 new_allocation(res, "malloc call");
112 void* __wrap_calloc(size_t nmemb, size_t len) {
113 void* res = __real_calloc(nmemb, len);
114 new_allocation(res, "calloc call");
117 void __wrap_free(void* ptr) {
118 if (ptr == NULL) return;
123 void* __real_realloc(void* ptr, size_t newlen);
124 void* __wrap_realloc(void* ptr, size_t len) {
125 if (ptr != NULL) alloc_freed(ptr);
126 void* res = __real_realloc(ptr, len);
127 new_allocation(res, "realloc call");
130 void __wrap_reallocarray(void* ptr, size_t new_sz) {
131 // Rust doesn't seem to use reallocarray currently
135 void __attribute__((destructor)) check_leaks() {
136 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
137 fprintf(stderr, "%s %p remains:\\n", a->struct_name, a->ptr);
138 backtrace_symbols_fd(a->bt, a->bt_len, STDERR_FILENO);
139 fprintf(stderr, "\\n\\n");
141 DO_ASSERT(allocation_ll == NULL);
151 def __init__(self, is_native_primitive, rust_obj, java_ty, java_fn_ty_arg, java_hu_ty, c_ty, passed_as_ptr, is_ptr, var_name, arr_len, arr_access, subty=None):
152 self.is_native_primitive = is_native_primitive
153 self.rust_obj = rust_obj
154 self.java_ty = java_ty
155 self.java_hu_ty = java_hu_ty
156 self.java_fn_ty_arg = java_fn_ty_arg
158 self.passed_as_ptr = passed_as_ptr
160 self.var_name = var_name
161 self.arr_len = arr_len
162 self.arr_access = arr_access
164 self.pass_by_ref = is_ptr
165 self.requires_clone = None
168 def __init__(self, ty_info, arg_name, arg_conv, arg_conv_name, arg_conv_cleanup, ret_conv, ret_conv_name, to_hu_conv, to_hu_conv_name, from_hu_conv):
169 assert(ty_info.c_ty is not None)
170 assert(ty_info.java_ty is not None)
171 assert(arg_name is not None)
172 self.passed_as_ptr = ty_info.passed_as_ptr
173 self.rust_obj = ty_info.rust_obj
174 self.c_ty = ty_info.c_ty
175 self.java_ty = ty_info.java_ty
176 self.java_hu_ty = ty_info.java_hu_ty
177 self.java_fn_ty_arg = ty_info.java_fn_ty_arg
178 self.arg_name = arg_name
179 self.arg_conv = arg_conv
180 self.arg_conv_name = arg_conv_name
181 self.arg_conv_cleanup = arg_conv_cleanup
182 self.ret_conv = ret_conv
183 self.ret_conv_name = ret_conv_name
184 self.to_hu_conv = to_hu_conv
185 self.to_hu_conv_name = to_hu_conv_name
186 self.from_hu_conv = from_hu_conv
190 out_java.write(self.java_ty)
192 def print_name(self):
193 if self.arg_name != "":
194 out_java.write(" " + self.arg_name)
195 write_c(" " + self.arg_name)
197 out_java.write(" arg")
200 def camel_to_snake(s):
201 # Convert camel case to snake case, in a way that appears to match cbindgen
207 if lastchar.isupper():
208 if not char.isupper() and not lastund:
213 ret = ret + lastchar.lower()
216 if char.isupper() and not lastund:
224 return (ret + lastchar.lower()).strip("_")
226 unitary_enums = set()
227 complex_enums = set()
228 opaque_structs = set()
229 trait_structs = set()
233 var_is_arr_regex = re.compile("\(\*([A-za-z0-9_]*)\)\[([a-z0-9]*)\]")
234 var_ty_regex = re.compile("([A-za-z_0-9]*)(.*)")
235 java_c_types_none_allowed = True # Unset when we do the real pass that populates the above sets
236 def java_c_types(fn_arg, ret_arr_len):
237 fn_arg = fn_arg.strip()
238 if fn_arg.startswith("MUST_USE_RES "):
241 if fn_arg.startswith("const "):
250 if fn_arg.startswith("LDKThirtyTwoBytes"):
251 fn_arg = "uint8_t (*" + fn_arg[18:] + ")[32]"
252 assert var_is_arr_regex.match(fn_arg[8:])
253 rust_obj = "LDKThirtyTwoBytes"
255 elif fn_arg.startswith("LDKPublicKey"):
256 fn_arg = "uint8_t (*" + fn_arg[13:] + ")[33]"
257 assert var_is_arr_regex.match(fn_arg[8:])
258 rust_obj = "LDKPublicKey"
259 arr_access = "compressed_form"
260 elif fn_arg.startswith("LDKSecretKey"):
261 fn_arg = "uint8_t (*" + fn_arg[13:] + ")[32]"
262 assert var_is_arr_regex.match(fn_arg[8:])
263 rust_obj = "LDKSecretKey"
265 elif fn_arg.startswith("LDKSignature"):
266 fn_arg = "uint8_t (*" + fn_arg[13:] + ")[64]"
267 assert var_is_arr_regex.match(fn_arg[8:])
268 rust_obj = "LDKSignature"
269 arr_access = "compact_form"
270 elif fn_arg.startswith("LDKThreeBytes"):
271 fn_arg = "uint8_t (*" + fn_arg[14:] + ")[3]"
272 assert var_is_arr_regex.match(fn_arg[8:])
273 rust_obj = "LDKThreeBytes"
275 elif fn_arg.startswith("LDKFourBytes"):
276 fn_arg = "uint8_t (*" + fn_arg[13:] + ")[4]"
277 assert var_is_arr_regex.match(fn_arg[8:])
278 rust_obj = "LDKFourBytes"
280 elif fn_arg.startswith("LDKSixteenBytes"):
281 fn_arg = "uint8_t (*" + fn_arg[16:] + ")[16]"
282 assert var_is_arr_regex.match(fn_arg[8:])
283 rust_obj = "LDKSixteenBytes"
285 elif fn_arg.startswith("LDKTenBytes"):
286 fn_arg = "uint8_t (*" + fn_arg[12:] + ")[10]"
287 assert var_is_arr_regex.match(fn_arg[8:])
288 rust_obj = "LDKTenBytes"
290 elif fn_arg.startswith("LDKu8slice"):
291 fn_arg = "uint8_t (*" + fn_arg[11:] + ")[datalen]"
292 assert var_is_arr_regex.match(fn_arg[8:])
293 rust_obj = "LDKu8slice"
295 elif fn_arg.startswith("LDKCVecTempl_u8") or fn_arg.startswith("LDKCVec_u8Z"):
296 if fn_arg.startswith("LDKCVecTempl_u8"):
297 fn_arg = "uint8_t (*" + fn_arg[16:] + ")[datalen]"
298 rust_obj = "LDKCVecTempl_u8"
299 assert var_is_arr_regex.match(fn_arg[8:])
301 fn_arg = "uint8_t (*" + fn_arg[12:] + ")[datalen]"
302 rust_obj = "LDKCVec_u8Z"
303 assert var_is_arr_regex.match(fn_arg[8:])
305 elif fn_arg.startswith("LDKTransaction"):
306 fn_arg = "uint8_t (*" + fn_arg[15:] + ")[datalen]"
307 rust_obj = "LDKTransaction"
308 assert var_is_arr_regex.match(fn_arg[8:])
310 elif fn_arg.startswith("LDKCVecTempl_") or fn_arg.startswith("LDKCVec_"):
313 fn_arg = fn_arg.replace("*", "")
316 if fn_arg.startswith("LDKCVec_"):
317 tyn = fn_arg[8:].split(" ")
318 assert tyn[0].endswith("Z")
322 new_arg = "LDK" + tyn[0][:-1]
324 new_arg = new_arg + " " + a
325 res = java_c_types(new_arg, ret_arr_len)
327 res = java_c_types("LDK" + fn_arg[13:], ret_arr_len)
329 assert java_c_types_none_allowed
332 res.pass_by_ref = True
333 if res.is_native_primitive or res.passed_as_ptr:
334 return TypeInfo(rust_obj=fn_arg.split(" ")[0], java_ty=res.java_ty + "[]", java_hu_ty=res.java_hu_ty + "[]",
335 java_fn_ty_arg="[" + res.java_fn_ty_arg, c_ty=res.c_ty + "Array", passed_as_ptr=False, is_ptr=is_ptr,
336 var_name=res.var_name, arr_len="datalen", arr_access="data", subty=res, is_native_primitive=False)
338 return TypeInfo(rust_obj=fn_arg.split(" ")[0], java_ty=res.java_ty + "[]", java_hu_ty=res.java_hu_ty + "[]",
339 java_fn_ty_arg="[" + res.java_fn_ty_arg, c_ty="jobjectArray", passed_as_ptr=False, is_ptr=is_ptr,
340 var_name=res.var_name, arr_len="datalen", arr_access="data", subty=res, is_native_primitive=False)
344 if fn_arg.startswith("void"):
348 fn_arg = fn_arg[4:].strip()
350 elif fn_arg.startswith("bool"):
354 fn_arg = fn_arg[4:].strip()
356 elif fn_arg.startswith("uint8_t"):
360 fn_arg = fn_arg[7:].strip()
362 elif fn_arg.startswith("uint16_t"):
366 fn_arg = fn_arg[8:].strip()
368 elif fn_arg.startswith("uint32_t"):
372 fn_arg = fn_arg[8:].strip()
374 elif fn_arg.startswith("uint64_t") or fn_arg.startswith("uintptr_t"):
378 if fn_arg.startswith("uint64_t"):
379 fn_arg = fn_arg[8:].strip()
381 fn_arg = fn_arg[9:].strip()
383 elif is_const and fn_arg.startswith("char *"):
386 fn_ty_arg = "Ljava/lang/String;"
387 fn_arg = fn_arg[6:].strip()
388 elif fn_arg.startswith("LDKStr"):
391 fn_ty_arg = "Ljava/lang/String;"
392 fn_arg = fn_arg[6:].strip()
396 ma = var_ty_regex.match(fn_arg)
397 if ma.group(1).strip() in unitary_enums:
398 java_ty = ma.group(1).strip()
400 fn_ty_arg = "Lorg/ldk/enums/" + ma.group(1).strip() + ";"
401 fn_arg = ma.group(2).strip()
402 rust_obj = ma.group(1).strip()
404 elif ma.group(1).strip().startswith("LDKC2Tuple"):
406 java_hu_ty = "TwoTuple<"
407 if not ma.group(1).strip() in tuple_types:
408 assert java_c_types_none_allowed
410 for idx, ty_info in enumerate(tuple_types[ma.group(1).strip()][0]):
412 java_hu_ty = java_hu_ty + ", "
413 if ty_info.is_native_primitive:
414 java_hu_ty = java_hu_ty + ty_info.java_hu_ty.title() # If we're a primitive, capitalize the first letter
416 java_hu_ty = java_hu_ty + ty_info.java_hu_ty
417 java_hu_ty = java_hu_ty + ">"
420 fn_arg = ma.group(2).strip()
421 rust_obj = ma.group(1).strip()
423 elif ma.group(1).strip().startswith("LDKC3Tuple"):
425 java_hu_ty = "ThreeTuple<"
426 if not ma.group(1).strip() in tuple_types:
427 assert java_c_types_none_allowed
429 for idx, ty_info in enumerate(tuple_types[ma.group(1).strip()][0]):
431 java_hu_ty = java_hu_ty + ", "
432 if ty_info.is_native_primitive:
433 java_hu_ty = java_hu_ty + ty_info.java_hu_ty.title() # If we're a primitive, capitalize the first letter
435 java_hu_ty = java_hu_ty + ty_info.java_hu_ty
436 java_hu_ty = java_hu_ty + ">"
439 fn_arg = ma.group(2).strip()
440 rust_obj = ma.group(1).strip()
444 java_hu_ty = ma.group(1).strip().replace("LDKCResult", "Result").replace("LDK", "")
447 fn_arg = ma.group(2).strip()
448 rust_obj = ma.group(1).strip()
451 if fn_arg.startswith(" *") or fn_arg.startswith("*"):
452 fn_arg = fn_arg.replace("*", "").strip()
459 var_is_arr = var_is_arr_regex.match(fn_arg)
460 if var_is_arr is not None or ret_arr_len is not None:
461 assert(not take_by_ptr)
463 java_ty = java_ty + "[]"
464 c_ty = c_ty + "Array"
465 if var_is_arr is not None:
466 if var_is_arr.group(1) == "":
467 return TypeInfo(rust_obj=rust_obj, java_ty=java_ty, java_hu_ty=java_ty, java_fn_ty_arg="[" + fn_ty_arg, c_ty=c_ty,
468 passed_as_ptr=False, is_ptr=False, var_name="arg", arr_len=var_is_arr.group(2), arr_access=arr_access, is_native_primitive=False)
469 return TypeInfo(rust_obj=rust_obj, java_ty=java_ty, java_hu_ty=java_ty, java_fn_ty_arg="[" + fn_ty_arg, c_ty=c_ty,
470 passed_as_ptr=False, is_ptr=False, var_name=var_is_arr.group(1), arr_len=var_is_arr.group(2), arr_access=arr_access, is_native_primitive=False)
472 if java_hu_ty is None:
474 return TypeInfo(rust_obj=rust_obj, java_ty=java_ty, java_hu_ty=java_hu_ty, java_fn_ty_arg=fn_ty_arg, c_ty=c_ty, passed_as_ptr=is_ptr or take_by_ptr,
475 is_ptr=is_ptr, var_name=fn_arg, arr_len=arr_len, arr_access=arr_access, is_native_primitive=is_primitive)
477 fn_ptr_regex = re.compile("^extern const ([A-Za-z_0-9\* ]*) \(\*(.*)\)\((.*)\);$")
478 fn_ret_arr_regex = re.compile("(.*) \(\*(.*)\((.*)\)\)\[([0-9]*)\];$")
479 reg_fn_regex = re.compile("([A-Za-z_0-9\* ]* \*?)([a-zA-Z_0-9]*)\((.*)\);$")
482 c_array_class_caches = set()
483 with open(sys.argv[1]) as in_h:
485 reg_fn = reg_fn_regex.match(line)
486 if reg_fn is not None:
487 if reg_fn.group(2).endswith("_clone"):
488 clone_fns.add(reg_fn.group(2))
490 rty = java_c_types(reg_fn.group(1), None)
491 if rty is not None and rty.rust_obj is not None and reg_fn.group(2) == rty.java_hu_ty + "_new":
492 constructor_fns[rty.rust_obj] = reg_fn.group(3)
494 arr_fn = fn_ret_arr_regex.match(line)
495 if arr_fn is not None:
496 if arr_fn.group(2).endswith("_clone"):
497 clone_fns.add(arr_fn.group(2))
498 # No object constructors return arrays, as then they wouldn't be an object constructor
500 java_c_types_none_allowed = False # C structs created by cbindgen are declared in dependency order
502 with open(sys.argv[1]) as in_h, open(sys.argv[2], "w") as out_java:
503 def map_type(fn_arg, print_void, ret_arr_len, is_free, holds_ref):
504 ty_info = java_c_types(fn_arg, ret_arr_len)
505 return map_type_with_info(ty_info, print_void, ret_arr_len, is_free, holds_ref)
507 def map_type_with_info(ty_info, print_void, ret_arr_len, is_free, holds_ref):
508 if ty_info.c_ty == "void":
510 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
511 arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None,
512 ret_conv = None, ret_conv_name = None, to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
513 if ty_info.c_ty.endswith("Array"):
514 arr_len = ty_info.arr_len
515 if arr_len is not None:
516 arr_name = ty_info.var_name
519 arr_len = ret_arr_len
520 if ty_info.c_ty == "jbyteArray":
521 ret_conv = ("jbyteArray " + arr_name + "_arr = (*_env)->NewByteArray(_env, " + arr_len + ");\n" + "(*_env)->SetByteArrayRegion(_env, " + arr_name + "_arr, 0, " + arr_len + ", ", "")
522 arg_conv_cleanup = None
523 if not arr_len.isdigit():
524 arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n"
525 arg_conv = arg_conv + arr_name + "_ref." + arr_len + " = (*_env)->GetArrayLength (_env, " + arr_name + ");\n"
526 if (not ty_info.is_ptr or not holds_ref) and ty_info.rust_obj != "LDKu8slice":
527 arg_conv = arg_conv + arr_name + "_ref." + ty_info.arr_access + " = MALLOC(" + arr_name + "_ref." + arr_len + ", \"" + ty_info.rust_obj + " Bytes\");\n"
528 arg_conv = arg_conv + "(*_env)->GetByteArrayRegion(_env, " + arr_name + ", 0, " + arr_name + "_ref." + arr_len + ", " + arr_name + "_ref." + ty_info.arr_access + ");"
530 arg_conv = arg_conv + arr_name + "_ref." + ty_info.arr_access + " = (*_env)->GetByteArrayElements (_env, " + arr_name + ", NULL);"
531 arg_conv_cleanup = "(*_env)->ReleaseByteArrayElements(_env, " + arr_name + ", (int8_t*)" + arr_name + "_ref." + ty_info.arr_access + ", 0);"
532 if ty_info.rust_obj == "LDKTransaction":
533 arg_conv = arg_conv + "\n" + arr_name + "_ref.data_is_owned = " + str(holds_ref).lower() + ";"
534 ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "")
535 ret_conv = (ret_conv[0], ";\njbyteArray " + arr_name + "_arr = (*_env)->NewByteArray(_env, " + arr_name + "_var." + arr_len + ");\n")
536 ret_conv = (ret_conv[0], ret_conv[1] + "(*_env)->SetByteArrayRegion(_env, " + arr_name + "_arr, 0, " + arr_name + "_var." + arr_len + ", " + arr_name + "_var." + ty_info.arr_access + ");")
537 if not holds_ref and ty_info.rust_obj != "LDKu8slice":
538 ret_conv = (ret_conv[0], ret_conv[1] + "\n" + ty_info.rust_obj.replace("LDK", "") + "_free(" + arr_name + "_var);")
539 elif ty_info.rust_obj is not None:
540 arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n"
541 arg_conv = arg_conv + "CHECK((*_env)->GetArrayLength (_env, " + arr_name + ") == " + arr_len + ");\n"
542 arg_conv = arg_conv + "(*_env)->GetByteArrayRegion (_env, " + arr_name + ", 0, " + arr_len + ", " + arr_name + "_ref." + ty_info.arr_access + ");"
543 ret_conv = (ret_conv[0], "." + ty_info.arr_access + ");")
545 arg_conv = "unsigned char " + arr_name + "_arr[" + arr_len + "];\n"
546 arg_conv = arg_conv + "CHECK((*_env)->GetArrayLength (_env, " + arr_name + ") == " + arr_len + ");\n"
547 arg_conv = arg_conv + "(*_env)->GetByteArrayRegion (_env, " + arr_name + ", 0, " + arr_len + ", " + arr_name + "_arr);\n" + "unsigned char (*" + arr_name + "_ref)[" + arr_len + "] = &" + arr_name + "_arr;"
548 ret_conv = (ret_conv[0] + "*", ");")
549 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
550 arg_conv = arg_conv, arg_conv_name = arr_name + "_ref", arg_conv_cleanup = arg_conv_cleanup,
551 ret_conv = ret_conv, ret_conv_name = arr_name + "_arr", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
553 assert not arr_len.isdigit() # fixed length arrays not implemented
554 assert ty_info.java_ty[len(ty_info.java_ty) - 2:] == "[]"
555 conv_name = "arr_conv_" + str(len(ty_info.java_hu_ty))
556 idxc = chr(ord('a') + (len(ty_info.java_hu_ty) % 26))
557 ty_info.subty.var_name = conv_name
558 ty_info.subty.requires_clone = not ty_info.is_ptr or not holds_ref
559 subty = map_type_with_info(ty_info.subty, False, None, is_free, holds_ref)
562 arg_conv = ty_info.rust_obj + " " + arr_name + "_constr;\n"
563 arg_conv = arg_conv + arr_name + "_constr." + arr_len + " = (*_env)->GetArrayLength (_env, " + arr_name + ");\n"
564 arg_conv = arg_conv + "if (" + arr_name + "_constr." + arr_len + " > 0)\n"
565 if subty.rust_obj is None:
568 szof = subty.rust_obj
569 arg_conv = arg_conv + "\t" + arr_name + "_constr." + ty_info.arr_access + " = MALLOC(" + arr_name + "_constr." + arr_len + " * sizeof(" + szof + "), \"" + ty_info.rust_obj + " Elements\");\n"
570 arg_conv = arg_conv + "else\n"
571 arg_conv = arg_conv + "\t" + arr_name + "_constr." + ty_info.arr_access + " = NULL;\n"
572 if not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
573 arg_conv = arg_conv + ty_info.java_ty.strip("[]") + "* " + arr_name + "_vals = (*_env)->Get" + ty_info.subty.java_ty.title() + "ArrayElements (_env, " + arr_name + ", NULL);\n"
574 arg_conv = arg_conv + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_constr." + arr_len + "; " + idxc + "++) {\n"
575 if not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
576 arg_conv = arg_conv + "\t" + ty_info.java_ty.strip("[]") + " " + conv_name + " = " + arr_name + "_vals[" + idxc + "];"
577 if subty.arg_conv is not None:
578 arg_conv = arg_conv + "\n\t" + subty.arg_conv.replace("\n", "\n\t")
580 arg_conv = arg_conv + "\tjobject " + conv_name + " = (*_env)->GetObjectArrayElement(_env, " + arr_name + ", " + idxc + ");\n"
581 arg_conv = arg_conv + "\t" + subty.arg_conv.replace("\n", "\n\t")
582 arg_conv = arg_conv + "\n\t" + arr_name + "_constr." + ty_info.arr_access + "[" + idxc + "] = " + subty.arg_conv_name + ";\n}"
583 if not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
584 arg_conv = arg_conv + "\n(*_env)->Release" + ty_info.java_ty.strip("[]").title() + "ArrayElements (_env, " + arr_name + ", " + arr_name + "_vals, 0);"
586 arg_conv_name = "&" + arr_name + "_constr"
588 arg_conv_name = arr_name + "_constr"
589 arg_conv_cleanup = None
591 arg_conv_cleanup = "FREE(" + arr_name + "_constr." + ty_info.arr_access + ");"
593 if arr_name == "arg":
595 ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "")
596 if subty.ret_conv is None:
597 ret_conv = ("DUMMY", "DUMMY")
598 elif not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
599 ret_conv = (ret_conv[0], ";\n" + ty_info.c_ty + " " + arr_name + "_arr = (*_env)->New" + ty_info.java_ty.strip("[]").title() + "Array(_env, " + arr_name + "_var." + arr_len + ");\n")
600 ret_conv = (ret_conv[0], ret_conv[1] + subty.c_ty + " *" + arr_name + "_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, " + arr_name + "_arr, NULL);\n")
601 ret_conv = (ret_conv[0], ret_conv[1] + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_var." + arr_len + "; " + idxc + "++) {\n")
602 ret_conv = (ret_conv[0], ret_conv[1] + "\t" + subty.ret_conv[0].replace("\n", "\n\t"))
603 ret_conv = (ret_conv[0], ret_conv[1] + arr_name + "_var." + ty_info.arr_access + "[" + idxc + "]" + subty.ret_conv[1].replace("\n", "\n\t"))
604 ret_conv = (ret_conv[0], ret_conv[1] + "\n\t" + arr_name + "_arr_ptr[" + idxc + "] = " + subty.ret_conv_name + ";\n")
605 ret_conv = (ret_conv[0], ret_conv[1] + "}\n(*_env)->ReleasePrimitiveArrayCritical(_env, " + arr_name + "_arr, " + arr_name + "_arr_ptr, 0);")
607 assert ty_info.java_fn_ty_arg.startswith("[")
608 clz_var = ty_info.java_fn_ty_arg[1:].replace("[", "arr_of_")
609 c_array_class_caches.add(clz_var)
610 ret_conv = (ret_conv[0], ";\n" + ty_info.c_ty + " " + arr_name + "_arr = (*_env)->NewObjectArray(_env, " + arr_name + "_var." + arr_len + ", " + clz_var + "_clz, NULL);\n")
611 ret_conv = (ret_conv[0], ret_conv[1] + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_var." + arr_len + "; " + idxc + "++) {\n")
612 ret_conv = (ret_conv[0], ret_conv[1] + "\t" + subty.ret_conv[0].replace("\n", "\n\t"))
613 ret_conv = (ret_conv[0], ret_conv[1] + arr_name + "_var." + ty_info.arr_access + "[" + idxc + "]" + subty.ret_conv[1].replace("\n", "\n\t"))
614 ret_conv = (ret_conv[0], ret_conv[1] + "\n\t(*_env)->SetObjectArrayElement(_env, " + arr_name + "_arr, " + idxc + ", " + subty.ret_conv_name + ");\n")
615 ret_conv = (ret_conv[0], ret_conv[1] + "}")
617 if subty.rust_obj is not None and subty.rust_obj in opaque_structs:
618 ret_conv = (ret_conv[0], ret_conv[1] + "\nFREE(" + arr_name + "_var." + ty_info.arr_access + ");")
620 ret_conv = (ret_conv[0], ret_conv[1] + "\n" + ty_info.rust_obj.replace("LDK", "") + "_free(" + arr_name + "_var);")
623 to_hu_conv_name = None
624 if subty.to_hu_conv is not None:
625 to_hu_conv = ty_info.java_hu_ty + " " + conv_name + "_arr = new " + ty_info.subty.java_hu_ty.split("<")[0] + "[" + arr_name + ".length];\n"
626 to_hu_conv = to_hu_conv + "for (int " + idxc + " = 0; " + idxc + " < " + arr_name + ".length; " + idxc + "++) {\n"
627 to_hu_conv = to_hu_conv + "\t" + subty.java_ty + " " + conv_name + " = " + arr_name + "[" + idxc + "];\n"
628 to_hu_conv = to_hu_conv + "\t" + subty.to_hu_conv.replace("\n", "\n\t") + "\n"
629 to_hu_conv = to_hu_conv + "\t" + conv_name + "_arr[" + idxc + "] = " + subty.to_hu_conv_name + ";\n}"
630 to_hu_conv_name = conv_name + "_arr"
632 if subty.from_hu_conv is not None:
633 if subty.java_ty == "long" and subty.java_hu_ty != "long":
634 from_hu_conv = ("Arrays.stream(" + arr_name + ").mapToLong(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray()", "/* TODO 2 " + subty.java_hu_ty + " */")
635 elif subty.java_ty == "long":
636 from_hu_conv = ("Arrays.stream(" + arr_name + ").map(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray()", "/* TODO 2 " + subty.java_hu_ty + " */")
638 from_hu_conv = ("(" + ty_info.java_ty + ")Arrays.stream(" + arr_name + ").map(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray()", "/* TODO 2 " + subty.java_hu_ty + " */")
640 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
641 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = arg_conv_cleanup,
642 ret_conv = ret_conv, ret_conv_name = arr_name + "_arr", to_hu_conv = to_hu_conv, to_hu_conv_name = to_hu_conv_name, from_hu_conv = from_hu_conv)
643 elif ty_info.java_ty == "String":
644 if ty_info.arr_access is None:
645 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
646 arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None,
647 ret_conv = ("jstring " + ty_info.var_name + "_conv = (*_env)->NewStringUTF(_env, ", ");"), ret_conv_name = ty_info.var_name + "_conv",
648 to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
650 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
651 arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None,
652 ret_conv = ("LDKStr " + ty_info.var_name + "_str = ",
653 ";\nchar* " + ty_info.var_name + "_buf = MALLOC(" + ty_info.var_name + "_str." + ty_info.arr_len + " + 1, \"str conv buf\");\n" +
654 "memcpy(" + ty_info.var_name + "_buf, " + ty_info.var_name + "_str." + ty_info.arr_access + ", " + ty_info.var_name + "_str." + ty_info.arr_len + ");\n" +
655 ty_info.var_name + "_buf[" + ty_info.var_name + "_str." + ty_info.arr_len + "] = 0;\n" +
656 "jstring " + ty_info.var_name + "_conv = (*_env)->NewStringUTF(_env, " + ty_info.var_name + "_str." + ty_info.arr_access + ");\n" +
657 "FREE(" + ty_info.var_name + "_buf);"),
658 ret_conv_name = ty_info.var_name + "_conv", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
659 elif ty_info.var_name == "" and not print_void:
660 # We don't have a parameter name, and want one, just call it arg
661 if ty_info.rust_obj is not None:
662 assert(not is_free or ty_info.rust_obj not in opaque_structs)
663 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
664 arg_conv = ty_info.rust_obj + " arg_conv = *(" + ty_info.rust_obj + "*)arg;\nFREE((void*)arg);",
665 arg_conv_name = "arg_conv", arg_conv_cleanup = None,
666 ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 7", to_hu_conv_name = None, from_hu_conv = None)
669 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
670 arg_conv = None, arg_conv_name = "arg", arg_conv_cleanup = None,
671 ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 8", to_hu_conv_name = None, from_hu_conv = None)
672 elif ty_info.rust_obj is None:
673 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
674 arg_conv = None, arg_conv_name = ty_info.var_name, arg_conv_cleanup = None,
675 ret_conv = None, ret_conv_name = None, to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
677 if ty_info.var_name == "":
678 ty_info.var_name = "ret"
680 if ty_info.rust_obj in opaque_structs:
681 opaque_arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv;\n"
682 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.inner = (void*)(" + ty_info.var_name + " & (~1));\n"
683 if ty_info.is_ptr and holds_ref:
684 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.is_owned = false;"
686 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.is_owned = (" + ty_info.var_name + " & 1) || (" + ty_info.var_name + " == 0);"
687 if not is_free and (not ty_info.is_ptr or not holds_ref or ty_info.requires_clone == True) and ty_info.requires_clone != False:
688 if (ty_info.java_hu_ty + "_clone") in clone_fns:
689 # TODO: This is a bit too naive, even with the checks above, we really need to know if rust wants a ref or not, not just if its pass as a ptr.
690 opaque_arg_conv = opaque_arg_conv + "\nif (" + ty_info.var_name + "_conv.inner != NULL)\n"
691 opaque_arg_conv = opaque_arg_conv + "\t" + ty_info.var_name + "_conv = " + ty_info.java_hu_ty + "_clone(&" + ty_info.var_name + "_conv);"
692 elif ty_info.passed_as_ptr:
693 opaque_arg_conv = opaque_arg_conv + "\n// Warning: we may need a move here but can't clone!"
695 opaque_ret_conv_suf = ";\n"
696 if not holds_ref and ty_info.is_ptr and (ty_info.java_hu_ty + "_clone") in clone_fns: # is_ptr, not holds_ref implies passing a pointed-to value to java, which needs copied
697 opaque_ret_conv_suf = opaque_ret_conv_suf + "if (" + ty_info.var_name + "->inner != NULL)\n"
698 opaque_ret_conv_suf = opaque_ret_conv_suf + "\t" + ty_info.var_name + "_var = " + ty_info.java_hu_ty + "_clone(" + ty_info.var_name + ");\n"
699 elif not holds_ref and ty_info.is_ptr:
700 opaque_ret_conv_suf = opaque_ret_conv_suf + "// Warning: we may need a move here but can't clone!\n"
702 opaque_ret_conv_suf = opaque_ret_conv_suf + "CHECK((((long)" + ty_info.var_name + "_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.\n"
703 opaque_ret_conv_suf = opaque_ret_conv_suf + "CHECK((((long)&" + ty_info.var_name + "_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.\n"
705 opaque_ret_conv_suf = opaque_ret_conv_suf + "long " + ty_info.var_name + "_ref = (long)" + ty_info.var_name + "_var.inner & ~1;"
707 opaque_ret_conv_suf = opaque_ret_conv_suf + "long " + ty_info.var_name + "_ref = (long)" + ty_info.var_name + "_var.inner;\n"
708 opaque_ret_conv_suf = opaque_ret_conv_suf + "if (" + ty_info.var_name + "_var.is_owned) {\n"
709 opaque_ret_conv_suf = opaque_ret_conv_suf + "\t" + ty_info.var_name + "_ref |= 1;\n"
710 opaque_ret_conv_suf = opaque_ret_conv_suf + "}"
713 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
714 arg_conv = opaque_arg_conv, arg_conv_name = "&" + ty_info.var_name + "_conv", arg_conv_cleanup = None,
715 ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = *", opaque_ret_conv_suf),
716 ret_conv_name = ty_info.var_name + "_ref",
717 to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");",
718 to_hu_conv_name = ty_info.var_name + "_hu_conv",
719 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")"))
721 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
722 arg_conv = opaque_arg_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
723 ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = ", opaque_ret_conv_suf),
724 ret_conv_name = ty_info.var_name + "_ref",
725 to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");",
726 to_hu_conv_name = ty_info.var_name + "_hu_conv",
727 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")"))
729 if not ty_info.is_ptr:
730 if ty_info.rust_obj in unitary_enums:
731 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
732 arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = " + ty_info.rust_obj + "_from_java(_env, " + ty_info.var_name + ");",
733 arg_conv_name = ty_info.var_name + "_conv",
734 arg_conv_cleanup = None,
735 ret_conv = ("jclass " + ty_info.var_name + "_conv = " + ty_info.rust_obj + "_to_java(_env, ", ");"),
736 ret_conv_name = ty_info.var_name + "_conv", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
737 base_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = *(" + ty_info.rust_obj + "*)" + ty_info.var_name + ";"
738 if ty_info.rust_obj in trait_structs:
740 needs_full_clone = not is_free and (not ty_info.is_ptr and not holds_ref or ty_info.requires_clone == True) and ty_info.requires_clone != False
741 if needs_full_clone and (ty_info.java_hu_ty + "_clone") in clone_fns:
742 base_conv = base_conv + "\n" + ty_info.var_name + "_conv = " + ty_info.java_hu_ty + "_clone(" + ty_info.var_name + ");"
744 base_conv = base_conv + "\nif (" + ty_info.var_name + "_conv.free == " + ty_info.rust_obj + "_JCalls_free) {\n"
745 base_conv = base_conv + "\t// If this_arg is a JCalls struct, then we need to increment the refcnt in it.\n"
746 base_conv = base_conv + "\t" + ty_info.rust_obj + "_JCalls_clone(" + ty_info.var_name + "_conv.this_arg);\n}"
748 base_conv = base_conv + "// Warning: we may need a move here but can't do a full clone!\n"
751 base_conv = base_conv + "\n" + "FREE((void*)" + ty_info.var_name + ");"
752 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
753 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
754 ret_conv = (ty_info.rust_obj + "* ret = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*ret = ", ";"),
755 ret_conv_name = "(long)ret",
756 to_hu_conv = ty_info.java_hu_ty + " ret_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");\nret_hu_conv.ptrs_to.add(this);",
757 to_hu_conv_name = "ret_hu_conv",
758 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
759 if ty_info.rust_obj != "LDKu8slice":
760 # Don't bother free'ing slices passed in - Rust doesn't auto-free the
761 # underlying unlike Vecs, and it gives Java more freedom.
762 base_conv = base_conv + "\nFREE((void*)" + ty_info.var_name + ");";
763 if ty_info.rust_obj in complex_enums:
764 ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";")
766 ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_copy = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n", "")
767 if ty_info.requires_clone == True: # Set in object array mapping
768 if (ty_info.java_hu_ty + "_clone") in clone_fns:
769 ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = " + ty_info.java_hu_ty + "_clone(&", ");\n")
771 ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", "; // XXX: We likely need to clone here, but no _clone fn is available!\n")
773 ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", ";\n")
774 ret_conv = (ret_conv[0], ret_conv[1] + "long " + ty_info.var_name + "_ref = (long)" + ty_info.var_name + "_copy;")
775 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
776 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
777 ret_conv = ret_conv, ret_conv_name = ty_info.var_name + "_ref",
778 to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = " + ty_info.java_hu_ty + ".constr_from_ptr(" + ty_info.var_name + ");\n" + ty_info.var_name + "_hu_conv.ptrs_to.add(this);",
779 to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + ".ptr", ""))
780 if ty_info.rust_obj in result_types:
781 assert not ty_info.is_ptr and not holds_ref # Otherwise we shouldn't be MALLOC'ing
782 ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_conv = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*" + ty_info.var_name + "_conv = ", ";")
783 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
784 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
785 ret_conv = ret_conv, ret_conv_name = "(long)" + ty_info.var_name + "_conv",
786 to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = " + ty_info.java_hu_ty + ".constr_from_ptr(" + ty_info.var_name + ");\n" + ty_info.var_name + "_hu_conv.ptrs_to.add(this);",
787 to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + " != null ? " + ty_info.var_name + ".ptr : 0", ""))
788 if ty_info.rust_obj in tuple_types:
789 from_hu_conv = "bindings." + tuple_types[ty_info.rust_obj][1].replace("LDK", "") + "_new("
791 to_hu_conv_sfx = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " + ty_info.java_hu_ty + "("
792 for idx, conv in enumerate(tuple_types[ty_info.rust_obj][0]):
794 to_hu_conv_sfx = to_hu_conv_sfx + ", "
795 from_hu_conv = from_hu_conv + ", "
796 conv.var_name = ty_info.var_name + "_" + chr(idx + ord("a"))
797 conv_map = map_type_with_info(conv, False, None, is_free, holds_ref)
798 to_hu_conv_pfx = to_hu_conv_pfx + conv.java_ty + " " + ty_info.var_name + "_" + chr(idx + ord("a")) + " = " + "bindings." + tuple_types[ty_info.rust_obj][1] + "_get_" + chr(idx + ord("a")) + "(" + ty_info.var_name + ");\n"
799 if conv_map.to_hu_conv is not None:
800 to_hu_conv_pfx = to_hu_conv_pfx + conv_map.to_hu_conv + ";\n"
801 to_hu_conv_sfx = to_hu_conv_sfx + conv_map.to_hu_conv_name
803 to_hu_conv_sfx = to_hu_conv_sfx + ty_info.var_name + "_" + chr(idx + ord("a"))
804 if conv_map.from_hu_conv is not None:
805 from_hu_conv = from_hu_conv + conv_map.from_hu_conv[0].replace(ty_info.var_name + "_" + chr(idx + ord("a")), ty_info.var_name + "." + chr(idx + ord("a")))
806 if conv_map.from_hu_conv[1] != "":
807 from_hu_conv = from_hu_conv + "/*XXX: " + conv_map.from_hu_conv[1] + "*/"
809 from_hu_conv = from_hu_conv + ty_info.var_name + "." + chr(idx + ord("a"))
811 if not ty_info.is_ptr and not holds_ref:
812 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
813 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
815 ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_ref = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*" + ty_info.var_name + "_ref = ", ";"),
816 ret_conv_name = "(long)" + ty_info.var_name + "_ref",
817 to_hu_conv = to_hu_conv_pfx + to_hu_conv_sfx + ");", to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (from_hu_conv + ")", ""))
818 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
819 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
820 ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";"), ret_conv_name = ty_info.var_name + "_ref",
821 to_hu_conv = to_hu_conv_pfx + to_hu_conv_sfx + ");", to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (from_hu_conv + ")", ""))
823 # The manually-defined types - TxOut and Transaction
824 assert ty_info.rust_obj == "LDKTxOut"
825 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
826 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
827 ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";"), ret_conv_name = ty_info.var_name + "_ref",
828 to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " +ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");",
829 to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (ty_info.var_name + ".ptr", ""))
832 if ty_info.rust_obj in complex_enums:
833 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
834 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
835 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
836 ret_conv = ("long ret_" + ty_info.var_name + " = (long)", ";"), ret_conv_name = "ret_" + ty_info.var_name,
837 to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = " + ty_info.java_hu_ty + ".constr_from_ptr(" + ty_info.var_name + ");",
838 to_hu_conv_name = ty_info.var_name + "_hu_conv",
839 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")"))
840 elif ty_info.rust_obj in trait_structs:
841 if ty_info.java_hu_ty + "_clone" in clone_fns:
842 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
843 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
844 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
845 ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_clone = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n" +
846 "*" + ty_info.var_name + "_clone = " + ty_info.java_hu_ty + "_clone(", ");"),
847 ret_conv_name = "(long)" + ty_info.var_name + "_clone",
848 to_hu_conv = ty_info.java_hu_ty + " ret_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");\nret_hu_conv.ptrs_to.add(this);",
849 to_hu_conv_name = "ret_hu_conv",
850 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
852 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
853 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
854 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
855 ret_conv = ("long ret_" + ty_info.var_name + " = (long)", ";"), ret_conv_name = "ret_" + ty_info.var_name,
856 to_hu_conv = ty_info.java_hu_ty + " ret_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");\nret_hu_conv.ptrs_to.add(this);",
857 to_hu_conv_name = "ret_hu_conv",
858 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
859 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
860 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
861 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
862 ret_conv = ("long ret_" + ty_info.var_name + " = (long)", ";"), ret_conv_name = "ret_" + ty_info.var_name,
863 to_hu_conv = "TODO 3", to_hu_conv_name = None, from_hu_conv = None) # its a pointer, no conv needed
864 assert False # We should have handled every case by now.
866 def map_fn(line, re_match, ret_arr_len, c_call_string):
867 out_java.write("\t// " + line)
868 out_java.write("\tpublic static native ")
869 write_c("JNIEXPORT ")
871 is_free = re_match.group(2).endswith("_free")
872 struct_meth = re_match.group(2).split("_")[0]
874 ret_info = map_type(re_match.group(1), True, ret_arr_len, False, False)
877 if ret_info.ret_conv is not None:
878 ret_conv_pfx, ret_conv_sfx = ret_info.ret_conv
880 out_java.write(" " + re_match.group(2) + "(")
881 write_c(" JNICALL Java_org_ldk_impl_bindings_" + re_match.group(2).replace('_', '_1') + "(JNIEnv * _env, jclass _b")
884 default_constructor_args = {}
886 args_known = not ret_info.passed_as_ptr or ret_info.rust_obj in opaque_structs or ret_info.rust_obj in trait_structs or ret_info.rust_obj in complex_enums or ret_info.rust_obj in result_types
887 for idx, arg in enumerate(re_match.group(3).split(',')):
892 arg_conv_info = map_type(arg, False, None, is_free, True)
893 if arg_conv_info.c_ty != "void":
894 arg_conv_info.print_ty()
895 arg_conv_info.print_name()
896 if arg_conv_info.arg_name == "this_ptr" or arg_conv_info.arg_name == "this_arg":
898 if arg_conv_info.arg_conv is not None and "Warning" in arg_conv_info.arg_conv:
899 if arg_conv_info.rust_obj in constructor_fns:
901 for explode_arg in constructor_fns[arg_conv_info.rust_obj].split(','):
902 explode_arg_conv = map_type(explode_arg, False, None, False, True)
903 if explode_arg_conv.c_ty == "void":
904 # We actually want to handle this case, but for now its only used in NetGraphMsgHandler::new()
905 # which ends up resulting in a redundant constructor - both without arguments for the NetworkGraph.
907 assert explode_arg_conv.arg_name != "this_ptr"
908 assert explode_arg_conv.arg_name != "this_arg"
909 if explode_arg_conv.passed_as_ptr and not explode_arg_conv.rust_obj in trait_structs:
911 if not arg_conv_info.arg_name in default_constructor_args:
912 default_constructor_args[arg_conv_info.arg_name] = []
913 default_constructor_args[arg_conv_info.arg_name].append(explode_arg_conv)
916 arg_names.append(arg_conv_info)
918 out_java_struct = None
919 if ("LDK" + struct_meth in opaque_structs or "LDK" + struct_meth in trait_structs) and not is_free:
920 out_java_struct = open(sys.argv[3] + "/structs/" + struct_meth + ".java", "a")
922 out_java_struct.write("\t// Skipped " + re_match.group(2) + "\n")
923 out_java_struct.close()
924 out_java_struct = None
926 meth_n = re_match.group(2)[len(struct_meth) + 1:]
927 if ret_info.rust_obj == "LDK" + struct_meth:
928 out_java_struct.write("\tpublic static " + ret_info.java_hu_ty + " constructor_" + meth_n + "(")
930 out_java_struct.write("\tpublic " + ret_info.java_hu_ty + " " + meth_n + "(")
931 for idx, arg in enumerate(arg_names):
933 if not takes_self or idx > 1:
934 out_java_struct.write(", ")
935 if arg.java_ty != "void" and arg.arg_name != "this_ptr" and arg.arg_name != "this_arg":
936 if arg.arg_name in default_constructor_args:
937 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
939 out_java_struct.write(", ")
940 assert explode_arg.rust_obj in opaque_structs or explode_arg.rust_obj in trait_structs
941 out_java_struct.write(explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name)
943 out_java_struct.write(arg.java_hu_ty + " " + arg.arg_name)
946 out_java.write(");\n")
948 if out_java_struct is not None:
949 out_java_struct.write(") {\n")
951 for info in arg_names:
952 if info.arg_conv is not None:
953 write_c("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
955 if ret_info.ret_conv is not None:
956 write_c("\t" + ret_conv_pfx.replace('\n', '\n\t'))
957 elif ret_info.c_ty != "void":
958 write_c("\t" + ret_info.c_ty + " ret_val = ")
962 if c_call_string is None:
963 write_c(re_match.group(2) + "(")
965 write_c(c_call_string)
966 for idx, info in enumerate(arg_names):
967 if info.arg_conv_name is not None:
970 elif c_call_string is not None:
972 write_c(info.arg_conv_name)
974 if ret_info.ret_conv is not None:
975 write_c(ret_conv_sfx.replace('\n', '\n\t'))
978 for info in arg_names:
979 if info.arg_conv_cleanup is not None:
980 write_c("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
981 if ret_info.ret_conv is not None:
982 write_c("\n\treturn " + ret_info.ret_conv_name + ";")
983 elif ret_info.c_ty != "void":
984 write_c("\n\treturn ret_val;")
986 if out_java_struct is not None:
987 out_java_struct.write("\t\t")
988 if ret_info.java_ty != "void":
989 out_java_struct.write(ret_info.java_ty + " ret = ")
990 out_java_struct.write("bindings." + re_match.group(2) + "(")
991 for idx, info in enumerate(arg_names):
993 out_java_struct.write(", ")
994 if info.arg_name == "this_ptr" or info.arg_name == "this_arg":
995 out_java_struct.write("this.ptr")
996 elif info.arg_name in default_constructor_args:
997 out_java_struct.write("bindings." + info.java_hu_ty + "_new(")
998 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
1000 out_java_struct.write(", ")
1001 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1002 out_java_struct.write(explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
1003 out_java_struct.write(")")
1004 elif info.from_hu_conv is not None:
1005 out_java_struct.write(info.from_hu_conv[0])
1007 out_java_struct.write(info.arg_name)
1008 out_java_struct.write(");\n")
1009 if ret_info.to_hu_conv is not None:
1010 if ret_info.rust_obj == "LDK" + struct_meth:
1011 out_java_struct.write("\t\t" + ret_info.to_hu_conv.replace("\n", "\n\t\t").replace("this", ret_info.to_hu_conv_name) + "\n")
1013 out_java_struct.write("\t\t" + ret_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
1015 for info in arg_names:
1016 if info.arg_name == "this_ptr" or info.arg_name == "this_arg":
1018 elif info.arg_name in default_constructor_args:
1019 for explode_arg in default_constructor_args[info.arg_name]:
1020 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1021 out_java_struct.write("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name, expl_arg_name).replace("this", ret_info.to_hu_conv_name) + ";\n")
1022 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
1023 if ret_info.rust_obj == "LDK" + struct_meth and ret_info.to_hu_conv_name is not None:
1024 out_java_struct.write("\t\t" + info.from_hu_conv[1].replace("this", ret_info.to_hu_conv_name) + ";\n")
1026 out_java_struct.write("\t\t" + info.from_hu_conv[1] + ";\n")
1028 if ret_info.to_hu_conv_name is not None:
1029 out_java_struct.write("\t\treturn " + ret_info.to_hu_conv_name + ";\n")
1030 elif ret_info.java_ty != "void" and ret_info.rust_obj != "LDK" + struct_meth:
1031 out_java_struct.write("\t\treturn ret;\n")
1032 out_java_struct.write("\t}\n\n")
1033 out_java_struct.close()
1035 def map_unitary_enum(struct_name, field_lines):
1036 with open(sys.argv[3] + "/enums/" + struct_name + ".java", "w") as out_java_enum:
1037 out_java_enum.write("package org.ldk.enums;\n\n")
1038 unitary_enums.add(struct_name)
1039 write_c("static inline " + struct_name + " " + struct_name + "_from_java(JNIEnv *env, jclass val) {\n")
1040 write_c("\tswitch ((*env)->CallIntMethod(env, val, ordinal_meth)) {\n")
1042 for idx, struct_line in enumerate(field_lines):
1044 out_java_enum.write("public enum " + struct_name + " {\n")
1045 elif idx == len(field_lines) - 3:
1046 assert(struct_line.endswith("_Sentinel,"))
1047 elif idx == len(field_lines) - 2:
1048 out_java_enum.write("\t; static native void init();\n")
1049 out_java_enum.write("\tstatic { init(); }\n")
1050 out_java_enum.write("}")
1051 out_java.write("\tstatic { " + struct_name + ".values(); /* Force enum statics to run */ }\n")
1052 elif idx == len(field_lines) - 1:
1053 assert(struct_line == "")
1055 out_java_enum.write(struct_line + "\n")
1056 write_c("\t\tcase %d: return %s;\n" % (ord_v, struct_line.strip().strip(",")))
1059 write_c("\tabort();\n")
1063 write_c("static jclass " + struct_name + "_class = NULL;\n")
1064 for idx, struct_line in enumerate(field_lines):
1065 if idx > 0 and idx < len(field_lines) - 3:
1066 variant = struct_line.strip().strip(",")
1067 write_c("static jfieldID " + struct_name + "_" + variant + " = NULL;\n")
1068 write_c("JNIEXPORT void JNICALL Java_org_ldk_enums_" + struct_name.replace("_", "_1") + "_init (JNIEnv * env, jclass clz) {\n")
1069 write_c("\t" + struct_name + "_class = (*env)->NewGlobalRef(env, clz);\n")
1070 write_c("\tCHECK(" + struct_name + "_class != NULL);\n")
1071 for idx, struct_line in enumerate(field_lines):
1072 if idx > 0 and idx < len(field_lines) - 3:
1073 variant = struct_line.strip().strip(",")
1074 write_c("\t" + struct_name + "_" + variant + " = (*env)->GetStaticFieldID(env, " + struct_name + "_class, \"" + variant + "\", \"Lorg/ldk/enums/" + struct_name + ";\");\n")
1075 write_c("\tCHECK(" + struct_name + "_" + variant + " != NULL);\n")
1077 write_c("static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\n")
1078 write_c("\tswitch (val) {\n")
1079 for idx, struct_line in enumerate(field_lines):
1080 if idx > 0 and idx < len(field_lines) - 3:
1081 variant = struct_line.strip().strip(",")
1082 write_c("\t\tcase " + variant + ":\n")
1083 write_c("\t\t\treturn (*env)->GetStaticObjectField(env, " + struct_name + "_class, " + struct_name + "_" + variant + ");\n")
1085 write_c("\t\tdefault: abort();\n")
1089 def map_complex_enum(struct_name, union_enum_items):
1090 java_hu_type = struct_name.replace("LDK", "")
1091 complex_enums.add(struct_name)
1092 with open(sys.argv[3] + "/structs/" + java_hu_type + ".java", "w") as out_java_enum:
1093 out_java_enum.write(hu_struct_file_prefix)
1094 out_java_enum.write("public class " + java_hu_type + " extends CommonBase {\n")
1095 out_java_enum.write("\tprivate " + java_hu_type + "(Object _dummy, long ptr) { super(ptr); }\n")
1096 out_java_enum.write("\t@Override @SuppressWarnings(\"deprecation\")\n")
1097 out_java_enum.write("\tprotected void finalize() throws Throwable {\n")
1098 out_java_enum.write("\t\tsuper.finalize();\n")
1099 out_java_enum.write("\t\tif (ptr != 0) { bindings." + java_hu_type + "_free(ptr); }\n")
1100 out_java_enum.write("\t}\n")
1101 out_java_enum.write("\tstatic " + java_hu_type + " constr_from_ptr(long ptr) {\n")
1102 out_java_enum.write("\t\tbindings." + struct_name + " raw_val = bindings." + struct_name + "_ref_from_ptr(ptr);\n")
1103 java_hu_subclasses = ""
1105 tag_field_lines = union_enum_items["field_lines"]
1106 init_meth_jty_strs = {}
1107 for idx, struct_line in enumerate(tag_field_lines):
1109 out_java.write("\tpublic static class " + struct_name + " {\n")
1110 out_java.write("\t\tprivate " + struct_name + "() {}\n")
1111 elif idx == len(tag_field_lines) - 3:
1112 assert(struct_line.endswith("_Sentinel,"))
1113 elif idx == len(tag_field_lines) - 2:
1114 out_java.write("\t\tstatic native void init();\n")
1115 out_java.write("\t}\n")
1116 elif idx == len(tag_field_lines) - 1:
1117 assert(struct_line == "")
1119 var_name = struct_line.strip(' ,')[len(struct_name) + 1:]
1120 out_java.write("\t\tpublic final static class " + var_name + " extends " + struct_name + " {\n")
1121 java_hu_subclasses = java_hu_subclasses + "\tpublic final static class " + var_name + " extends " + java_hu_type + " {\n"
1122 out_java_enum.write("\t\tif (raw_val.getClass() == bindings." + struct_name + "." + var_name + ".class) {\n")
1123 out_java_enum.write("\t\t\treturn new " + var_name + "(ptr, (bindings." + struct_name + "." + var_name + ")raw_val);\n")
1124 write_c("static jclass " + struct_name + "_" + var_name + "_class = NULL;\n")
1125 write_c("static jmethodID " + struct_name + "_" + var_name + "_meth = NULL;\n")
1126 init_meth_jty_str = ""
1127 init_meth_params = ""
1130 if "LDK" + var_name in union_enum_items:
1131 enum_var_lines = union_enum_items["LDK" + var_name]
1132 for idx, field in enumerate(enum_var_lines):
1133 if idx != 0 and idx < len(enum_var_lines) - 2:
1134 field_ty = map_type(field.strip(' ;'), False, None, False, True)
1135 out_java.write("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.arg_name + ";\n")
1136 java_hu_subclasses = java_hu_subclasses + "\t\tpublic final " + field_ty.java_hu_ty + " " + field_ty.arg_name + ";\n"
1137 if field_ty.to_hu_conv is not None:
1138 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.java_ty + " " + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
1139 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
1140 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
1142 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
1143 init_meth_jty_str = init_meth_jty_str + field_ty.java_fn_ty_arg
1145 init_meth_params = init_meth_params + ", "
1146 init_meth_params = init_meth_params + field_ty.java_ty + " " + field_ty.arg_name
1147 init_meth_body = init_meth_body + "this." + field_ty.arg_name + " = " + field_ty.arg_name + "; "
1148 out_java.write("\t\t\t" + var_name + "(" + init_meth_params + ") { ")
1149 out_java.write(init_meth_body)
1150 out_java.write("}\n")
1151 out_java.write("\t\t}\n")
1152 out_java_enum.write("\t\t}\n")
1153 java_hu_subclasses = java_hu_subclasses + "\t\tprivate " + var_name + "(long ptr, bindings." + struct_name + "." + var_name + " obj) {\n\t\t\tsuper(null, ptr);\n"
1154 java_hu_subclasses = java_hu_subclasses + hu_conv_body
1155 java_hu_subclasses = java_hu_subclasses + "\t\t}\n\t}\n"
1156 init_meth_jty_strs[var_name] = init_meth_jty_str
1157 out_java_enum.write("\t\tassert false; return null; // Unreachable without extending the (internal) bindings interface\n\t}\n\n")
1158 out_java_enum.write(java_hu_subclasses)
1159 out_java.write("\tstatic { " + struct_name + ".init(); }\n")
1160 out_java.write("\tpublic static native " + struct_name + " " + struct_name + "_ref_from_ptr(long ptr);\n");
1162 write_c("JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024" + struct_name.replace("_", "_1") + "_init (JNIEnv * env, jclass _a) {\n")
1163 for idx, struct_line in enumerate(tag_field_lines):
1164 if idx != 0 and idx < len(tag_field_lines) - 3:
1165 var_name = struct_line.strip(' ,')[len(struct_name) + 1:]
1166 write_c("\t" + struct_name + "_" + var_name + "_class =\n")
1167 write_c("\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + struct_name + "$" + var_name + ";\"));\n")
1168 write_c("\tCHECK(" + struct_name + "_" + var_name + "_class != NULL);\n")
1169 write_c("\t" + struct_name + "_" + var_name + "_meth = (*env)->GetMethodID(env, " + struct_name + "_" + var_name + "_class, \"<init>\", \"(" + init_meth_jty_strs[var_name] + ")V\");\n")
1170 write_c("\tCHECK(" + struct_name + "_" + var_name + "_meth != NULL);\n")
1172 write_c("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {\n")
1173 write_c("\t" + struct_name + " *obj = (" + struct_name + "*)ptr;\n")
1174 write_c("\tswitch(obj->tag) {\n")
1175 for idx, struct_line in enumerate(tag_field_lines):
1176 if idx != 0 and idx < len(tag_field_lines) - 3:
1177 var_name = struct_line.strip(' ,')[len(struct_name) + 1:]
1178 write_c("\t\tcase " + struct_name + "_" + var_name + ": {\n")
1180 if "LDK" + var_name in union_enum_items:
1181 enum_var_lines = union_enum_items["LDK" + var_name]
1182 for idx, field in enumerate(enum_var_lines):
1183 if idx != 0 and idx < len(enum_var_lines) - 2:
1184 field_map = map_type(field.strip(' ;'), False, None, False, True)
1185 if field_map.ret_conv is not None:
1186 write_c("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
1187 write_c("obj->" + camel_to_snake(var_name) + "." + field_map.arg_name)
1188 write_c(field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
1189 c_params_text = c_params_text + ", " + field_map.ret_conv_name
1191 c_params_text = c_params_text + ", obj->" + camel_to_snake(var_name) + "." + field_map.arg_name
1192 write_c("\t\t\treturn (*_env)->NewObject(_env, " + struct_name + "_" + var_name + "_class, " + struct_name + "_" + var_name + "_meth" + c_params_text + ");\n")
1194 write_c("\t\tdefault: abort();\n")
1196 out_java_enum.write("}\n")
1198 def map_trait(struct_name, field_var_lines, trait_fn_lines):
1199 with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "w") as out_java_trait:
1200 write_c("typedef struct " + struct_name + "_JCalls {\n")
1201 write_c("\tatomic_size_t refcnt;\n")
1202 write_c("\tJavaVM *vm;\n")
1203 write_c("\tjweak o;\n")
1204 field_var_convs = []
1205 for var_line in field_var_lines:
1206 if var_line.group(1) in trait_structs:
1207 write_c("\t" + var_line.group(1) + "_JCalls* " + var_line.group(2) + ";\n")
1208 field_var_convs.append(None)
1210 field_var_convs.append(map_type(var_line.group(1) + " " + var_line.group(2), False, None, False, False))
1211 for fn_line in trait_fn_lines:
1212 if fn_line.group(2) != "free" and fn_line.group(2) != "clone":
1213 write_c("\tjmethodID " + fn_line.group(2) + "_meth;\n")
1214 write_c("} " + struct_name + "_JCalls;\n")
1216 out_java_trait.write(hu_struct_file_prefix)
1217 out_java_trait.write("public class " + struct_name.replace("LDK","") + " extends CommonBase {\n")
1218 out_java_trait.write("\tfinal bindings." + struct_name + " bindings_instance;\n")
1219 out_java_trait.write("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }\n")
1220 out_java_trait.write("\tprivate " + struct_name.replace("LDK", "") + "(bindings." + struct_name + " arg")
1221 for idx, var_line in enumerate(field_var_lines):
1222 if var_line.group(1) in trait_structs:
1223 out_java_trait.write(", bindings." + var_line.group(1) + " " + var_line.group(2))
1225 out_java_trait.write(", " + field_var_convs[idx].java_hu_ty + " " + var_line.group(2))
1226 out_java_trait.write(") {\n")
1227 out_java_trait.write("\t\tsuper(bindings." + struct_name + "_new(arg")
1228 for idx, var_line in enumerate(field_var_lines):
1229 if var_line.group(1) in trait_structs:
1230 out_java_trait.write(", " + var_line.group(2))
1231 elif field_var_convs[idx].from_hu_conv is not None:
1232 out_java_trait.write(", " + field_var_convs[idx].from_hu_conv[0])
1234 out_java_trait.write(", " + var_line.group(2))
1235 out_java_trait.write("));\n")
1236 out_java_trait.write("\t\tthis.ptrs_to.add(arg);\n")
1237 for idx, var_line in enumerate(field_var_lines):
1238 if var_line.group(1) in trait_structs:
1239 out_java_trait.write("\t\tthis.ptrs_to.add(" + var_line.group(2) + ");\n")
1240 elif field_var_convs[idx].from_hu_conv is not None and field_var_convs[idx].from_hu_conv[1] != "":
1241 out_java_trait.write("\t\t" + field_var_convs[idx].from_hu_conv[1] + ";\n")
1242 out_java_trait.write("\t\tthis.bindings_instance = arg;\n")
1243 out_java_trait.write("\t}\n")
1244 out_java_trait.write("\t@Override @SuppressWarnings(\"deprecation\")\n")
1245 out_java_trait.write("\tprotected void finalize() throws Throwable {\n")
1246 out_java_trait.write("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); } super.finalize();\n")
1247 out_java_trait.write("\t}\n\n")
1249 java_trait_constr = "\tprivate static class " + struct_name + "Holder { " + struct_name.replace("LDK", "") + " held; }\n"
1250 java_trait_constr = java_trait_constr + "\tpublic static " + struct_name.replace("LDK", "") + " new_impl(" + struct_name.replace("LDK", "") + "Interface arg"
1251 for idx, var_line in enumerate(field_var_lines):
1252 if var_line.group(1) in trait_structs:
1253 # Ideally we'd be able to take any instance of the interface, but our C code can only represent
1254 # Java-implemented version, so we require users pass a Java implementation here :/
1255 java_trait_constr = java_trait_constr + ", " + var_line.group(1).replace("LDK", "") + "." + var_line.group(1).replace("LDK", "") + "Interface " + var_line.group(2) + "_impl"
1257 java_trait_constr = java_trait_constr + ", " + field_var_convs[idx].java_hu_ty + " " + var_line.group(2)
1258 java_trait_constr = java_trait_constr + ") {\n\t\tfinal " + struct_name + "Holder impl_holder = new " + struct_name + "Holder();\n"
1259 java_trait_constr = java_trait_constr + "\t\timpl_holder.held = new " + struct_name.replace("LDK", "") + "(new bindings." + struct_name + "() {\n"
1260 out_java_trait.write("\tpublic static interface " + struct_name.replace("LDK", "") + "Interface {\n")
1261 out_java.write("\tpublic interface " + struct_name + " {\n")
1263 for fn_line in trait_fn_lines:
1264 java_meth_descr = "("
1265 if fn_line.group(2) != "free" and fn_line.group(2) != "clone":
1266 ret_ty_info = map_type(fn_line.group(1), True, None, False, False)
1268 out_java.write("\t\t " + ret_ty_info.java_ty + " " + fn_line.group(2) + "(")
1269 java_trait_constr = java_trait_constr + "\t\t\t@Override public " + ret_ty_info.java_ty + " " + fn_line.group(2) + "("
1270 out_java_trait.write("\t\t" + ret_ty_info.java_hu_ty + " " + fn_line.group(2) + "(")
1271 is_const = fn_line.group(3) is not None
1272 write_c(fn_line.group(1) + fn_line.group(2) + "_jcall(")
1274 write_c("const void* this_arg")
1276 write_c("void* this_arg")
1279 for idx, arg in enumerate(fn_line.group(4).split(',')):
1283 out_java.write(", ")
1284 java_trait_constr = java_trait_constr + ", "
1285 out_java_trait.write(", ")
1287 arg_conv_info = map_type(arg, True, None, False, False)
1288 write_c(arg.strip())
1289 out_java.write(arg_conv_info.java_ty + " " + arg_conv_info.arg_name)
1290 out_java_trait.write(arg_conv_info.java_hu_ty + " " + arg_conv_info.arg_name)
1291 java_trait_constr = java_trait_constr + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
1292 arg_names.append(arg_conv_info)
1293 java_meth_descr = java_meth_descr + arg_conv_info.java_fn_ty_arg
1294 java_meth_descr = java_meth_descr + ")" + ret_ty_info.java_fn_ty_arg
1295 java_meths.append(java_meth_descr)
1297 out_java.write(");\n")
1298 out_java_trait.write(");\n")
1299 java_trait_constr = java_trait_constr + ") {\n"
1301 write_c("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n")
1302 write_c("\tJNIEnv *_env;\n")
1303 write_c("\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);\n")
1305 for arg_info in arg_names:
1306 if arg_info.ret_conv is not None:
1307 write_c("\t" + arg_info.ret_conv[0].replace('\n', '\n\t'));
1308 write_c(arg_info.arg_name)
1309 write_c(arg_info.ret_conv[1].replace('\n', '\n\t') + "\n")
1310 if arg_info.to_hu_conv is not None:
1311 java_trait_constr = java_trait_constr + "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
1313 write_c("\tjobject obj = (*_env)->NewLocalRef(_env, j_calls->o);\n\tCHECK(obj != NULL);\n")
1314 if ret_ty_info.c_ty.endswith("Array"):
1315 write_c("\t" + ret_ty_info.c_ty + " arg = (*_env)->CallObjectMethod(_env, obj, j_calls->" + fn_line.group(2) + "_meth")
1316 elif not ret_ty_info.passed_as_ptr:
1317 write_c("\treturn (*_env)->Call" + ret_ty_info.java_ty.title() + "Method(_env, obj, j_calls->" + fn_line.group(2) + "_meth")
1319 write_c("\t" + fn_line.group(1).strip() + "* ret = (" + fn_line.group(1).strip() + "*)(*_env)->CallLongMethod(_env, obj, j_calls->" + fn_line.group(2) + "_meth");
1320 if ret_ty_info.java_ty != "void":
1321 java_trait_constr = java_trait_constr + "\t\t\t\t" + ret_ty_info.java_hu_ty + " ret = arg." + fn_line.group(2) + "("
1323 java_trait_constr = java_trait_constr + "\t\t\t\targ." + fn_line.group(2) + "("
1325 for idx, arg_info in enumerate(arg_names):
1326 if arg_info.ret_conv is not None:
1327 write_c(", " + arg_info.ret_conv_name)
1329 write_c(", " + arg_info.arg_name)
1331 java_trait_constr = java_trait_constr + ", "
1332 if arg_info.to_hu_conv_name is not None:
1333 java_trait_constr = java_trait_constr + arg_info.to_hu_conv_name
1335 java_trait_constr = java_trait_constr + arg_info.arg_name
1337 if ret_ty_info.arg_conv is not None:
1338 write_c("\t" + ret_ty_info.arg_conv.replace("\n", "\n\t") + "\n\treturn " + ret_ty_info.arg_conv_name + ";\n")
1341 java_trait_constr = java_trait_constr + ");\n"
1342 if ret_ty_info.java_ty != "void":
1343 if ret_ty_info.from_hu_conv is not None:
1344 java_trait_constr = java_trait_constr + "\t\t\t\t" + ret_ty_info.java_ty + " result = " + ret_ty_info.from_hu_conv[0] + ";\n"
1345 if ret_ty_info.from_hu_conv[1] != "":
1346 java_trait_constr = java_trait_constr + "\t\t\t\t" + ret_ty_info.from_hu_conv[1].replace("this", "impl_holder.held") + ";\n"
1347 if ret_ty_info.rust_obj in result_types:
1348 # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead
1349 java_trait_constr = java_trait_constr + "\t\t\t\tret.ptr = 0;\n"
1350 java_trait_constr = java_trait_constr + "\t\t\t\treturn result;\n"
1352 java_trait_constr = java_trait_constr + "\t\t\t\treturn ret;\n"
1353 java_trait_constr = java_trait_constr + "\t\t\t}\n"
1354 elif fn_line.group(2) == "free":
1355 write_c("static void " + struct_name + "_JCalls_free(void* this_arg) {\n")
1356 write_c("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n")
1357 write_c("\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n")
1358 write_c("\t\tJNIEnv *env;\n")
1359 write_c("\t\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);\n")
1360 write_c("\t\t(*env)->DeleteWeakGlobalRef(env, j_calls->o);\n")
1361 write_c("\t\tFREE(j_calls);\n")
1363 java_trait_constr = java_trait_constr + "\t\t}"
1364 for var_line in field_var_lines:
1365 if var_line.group(1) in trait_structs:
1366 java_trait_constr = java_trait_constr + ", " + var_line.group(2) + ".new_impl(" + var_line.group(2) + "_impl).bindings_instance"
1368 java_trait_constr = java_trait_constr + ", " + var_line.group(2)
1369 out_java_trait.write("\t}\n")
1370 out_java_trait.write(java_trait_constr + ");\n\t\treturn impl_holder.held;\n\t}\n")
1372 # Write out a clone function whether we need one or not, as we use them in moving to rust
1373 write_c("static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n")
1374 write_c("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n")
1375 write_c("\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n")
1376 for var_line in field_var_lines:
1377 if var_line.group(1) in trait_structs:
1378 write_c("\tatomic_fetch_add_explicit(&j_calls->" + var_line.group(2) + "->refcnt, 1, memory_order_release);\n")
1379 write_c("\treturn (void*) this_arg;\n")
1382 out_java.write("\t}\n")
1384 out_java.write("\tpublic static native long " + struct_name + "_new(" + struct_name + " impl")
1385 write_c("static inline " + struct_name + " " + struct_name + "_init (JNIEnv * env, jclass _a, jobject o")
1386 for idx, var_line in enumerate(field_var_lines):
1387 if var_line.group(1) in trait_structs:
1388 out_java.write(", " + var_line.group(1) + " " + var_line.group(2))
1389 write_c(", jobject " + var_line.group(2))
1391 out_java.write(", " + field_var_convs[idx].java_ty + " " + var_line.group(2))
1392 write_c(", " + field_var_convs[idx].c_ty + " " + var_line.group(2))
1393 out_java.write(");\n")
1396 write_c("\tjclass c = (*env)->GetObjectClass(env, o);\n")
1397 write_c("\tCHECK(c != NULL);\n")
1398 write_c("\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n")
1399 write_c("\tatomic_init(&calls->refcnt, 1);\n")
1400 write_c("\tDO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);\n")
1401 write_c("\tcalls->o = (*env)->NewWeakGlobalRef(env, o);\n")
1402 for (fn_line, java_meth_descr) in zip(trait_fn_lines, java_meths):
1403 if fn_line.group(2) != "free" and fn_line.group(2) != "clone":
1404 write_c("\tcalls->" + fn_line.group(2) + "_meth = (*env)->GetMethodID(env, c, \"" + fn_line.group(2) + "\", \"" + java_meth_descr + "\");\n")
1405 write_c("\tCHECK(calls->" + fn_line.group(2) + "_meth != NULL);\n")
1406 for idx, var_line in enumerate(field_var_lines):
1407 if field_var_convs[idx] is not None and field_var_convs[idx].arg_conv is not None:
1408 write_c("\n\t" + field_var_convs[idx].arg_conv.replace("\n", "\n\t") +"\n")
1409 write_c("\n\t" + struct_name + " ret = {\n")
1410 write_c("\t\t.this_arg = (void*) calls,\n")
1411 for fn_line in trait_fn_lines:
1412 if fn_line.group(2) != "free" and fn_line.group(2) != "clone":
1413 write_c("\t\t." + fn_line.group(2) + " = " + fn_line.group(2) + "_jcall,\n")
1414 elif fn_line.group(2) == "free":
1415 write_c("\t\t.free = " + struct_name + "_JCalls_free,\n")
1417 write_c("\t\t.clone = " + struct_name + "_JCalls_clone,\n")
1418 for idx, var_line in enumerate(field_var_lines):
1419 if var_line.group(1) in trait_structs:
1420 write_c("\t\t." + var_line.group(2) + " = " + var_line.group(1) + "_init(env, _a, " + var_line.group(2) + "),\n")
1421 elif field_var_convs[idx].arg_conv_name is not None:
1422 write_c("\t\t." + var_line.group(2) + " = " + field_var_convs[idx].arg_conv_name + ",\n")
1423 write_c("\t\t.set_" + var_line.group(2) + " = NULL,\n")
1425 write_c("\t\t." + var_line.group(2) + " = " + var_line.group(2) + ",\n")
1426 write_c("\t\t.set_" + var_line.group(2) + " = NULL,\n")
1428 for var_line in field_var_lines:
1429 if var_line.group(1) in trait_structs:
1430 write_c("\tcalls->" + var_line.group(2) + " = ret." + var_line.group(2) + ".this_arg;\n")
1431 write_c("\treturn ret;\n")
1434 write_c("JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new (JNIEnv * env, jclass _a, jobject o")
1435 for idx, var_line in enumerate(field_var_lines):
1436 if var_line.group(1) in trait_structs:
1437 write_c(", jobject " + var_line.group(2))
1439 write_c(", " + field_var_convs[idx].c_ty + " " + var_line.group(2))
1441 write_c("\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n")
1442 write_c("\t*res_ptr = " + struct_name + "_init(env, _a, o")
1443 for var_line in field_var_lines:
1444 write_c(", " + var_line.group(2))
1446 write_c("\treturn (long)res_ptr;\n")
1449 out_java.write("\tpublic static native " + struct_name + " " + struct_name + "_get_obj_from_jcalls(long val);\n")
1450 write_c("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {\n")
1451 write_c("\tjobject ret = (*env)->NewLocalRef(env, ((" + struct_name + "_JCalls*)val)->o);\n")
1452 write_c("\tCHECK(ret != NULL);\n")
1453 write_c("\treturn ret;\n")
1456 for fn_line in trait_fn_lines:
1457 # For now, just disable enabling the _call_log - we don't know how to inverse-map String
1458 is_log = fn_line.group(2) == "log" and struct_name == "LDKLogger"
1459 if fn_line.group(2) != "free" and fn_line.group(2) != "clone" and fn_line.group(2) != "eq" and not is_log:
1460 dummy_line = fn_line.group(1) + struct_name.replace("LDK", "") + "_" + fn_line.group(2) + " " + struct_name + "* this_arg" + fn_line.group(4) + "\n"
1461 map_fn(dummy_line, re.compile("([A-Za-z_0-9]*) *([A-Za-z_0-9]*) *(.*)").match(dummy_line), None, "(this_arg_conv->" + fn_line.group(2) + ")(this_arg_conv->this_arg")
1462 for idx, var_line in enumerate(field_var_lines):
1463 if var_line.group(1) not in trait_structs:
1464 write_c(var_line.group(1) + " " + struct_name + "_set_get_" + var_line.group(2) + "(" + struct_name + "* this_arg) {\n")
1465 write_c("\tif (this_arg->set_" + var_line.group(2) + " != NULL)\n")
1466 write_c("\t\tthis_arg->set_" + var_line.group(2) + "(this_arg);\n")
1467 write_c("\treturn this_arg->" + var_line.group(2) + ";\n")
1469 dummy_line = var_line.group(1) + " " + struct_name.replace("LDK", "") + "_get_" + var_line.group(2) + " " + struct_name + "* this_arg" + fn_line.group(4) + "\n"
1470 map_fn(dummy_line, re.compile("([A-Za-z_0-9]*) *([A-Za-z_0-9]*) *(.*)").match(dummy_line), None, struct_name + "_set_get_" + var_line.group(2) + "(this_arg_conv")
1472 out_java.write("""package org.ldk.impl;
1473 import org.ldk.enums.*;
1475 public class bindings {
1476 public static class VecOrSliceDef {
1477 public long dataptr;
1478 public long datalen;
1480 public VecOrSliceDef(long dataptr, long datalen, long stride) {
1481 this.dataptr = dataptr; this.datalen = datalen; this.stride = stride;
1485 System.loadLibrary(\"lightningjni\");
1486 init(java.lang.Enum.class, VecOrSliceDef.class);
1489 static native void init(java.lang.Class c, java.lang.Class slicedef);
1490 static native void init_class_cache();
1492 public static native boolean deref_bool(long ptr);
1493 public static native long deref_long(long ptr);
1494 public static native void free_heap_ptr(long ptr);
1495 public static native byte[] read_bytes(long ptr, long len);
1496 public static native byte[] get_u8_slice_bytes(long slice_ptr);
1497 public static native long bytes_to_u8_vec(byte[] bytes);
1498 public static native long new_txpointer_copy_data(byte[] txdata);
1499 public static native void txpointer_free(long ptr);
1500 public static native byte[] txpointer_get_buffer(long ptr);
1501 public static native long vec_slice_len(long vec);
1502 public static native long new_empty_slice_vec();
1506 static jmethodID ordinal_meth = NULL;
1507 static jmethodID slicedef_meth = NULL;
1508 static jclass slicedef_cls = NULL;
1509 JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class, jclass slicedef_class) {
1510 ordinal_meth = (*env)->GetMethodID(env, enum_class, "ordinal", "()I");
1511 CHECK(ordinal_meth != NULL);
1512 slicedef_meth = (*env)->GetMethodID(env, slicedef_class, "<init>", "(JJJ)V");
1513 CHECK(slicedef_meth != NULL);
1514 slicedef_cls = (*env)->NewGlobalRef(env, slicedef_class);
1515 CHECK(slicedef_cls != NULL);
1518 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_deref_1bool (JNIEnv * env, jclass _a, jlong ptr) {
1519 return *((bool*)ptr);
1521 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_deref_1long (JNIEnv * env, jclass _a, jlong ptr) {
1522 return *((long*)ptr);
1524 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_free_1heap_1ptr (JNIEnv * env, jclass _a, jlong ptr) {
1527 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_read_1bytes (JNIEnv * _env, jclass _b, jlong ptr, jlong len) {
1528 jbyteArray ret_arr = (*_env)->NewByteArray(_env, len);
1529 (*_env)->SetByteArrayRegion(_env, ret_arr, 0, len, (unsigned char*)ptr);
1532 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes (JNIEnv * _env, jclass _b, jlong slice_ptr) {
1533 LDKu8slice *slice = (LDKu8slice*)slice_ptr;
1534 jbyteArray ret_arr = (*_env)->NewByteArray(_env, slice->datalen);
1535 (*_env)->SetByteArrayRegion(_env, ret_arr, 0, slice->datalen, slice->data);
1538 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_bytes_1to_1u8_1vec (JNIEnv * _env, jclass _b, jbyteArray bytes) {
1539 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8");
1540 vec->datalen = (*_env)->GetArrayLength(_env, bytes);
1541 vec->data = (uint8_t*)MALLOC(vec->datalen, "LDKCVec_u8Z Bytes");
1542 (*_env)->GetByteArrayRegion (_env, bytes, 0, vec->datalen, vec->data);
1545 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_txpointer_1get_1buffer (JNIEnv * env, jclass _b, jlong ptr) {
1546 LDKTransaction *txdata = (LDKTransaction*)ptr;
1548 slice.data = txdata->data;
1549 slice.datalen = txdata->datalen;
1550 return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (long)&slice);
1552 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data (JNIEnv * env, jclass _b, jbyteArray bytes) {
1553 LDKTransaction *txdata = (LDKTransaction*)MALLOC(sizeof(LDKTransaction), "LDKTransaction");
1554 txdata->datalen = (*env)->GetArrayLength(env, bytes);
1555 txdata->data = (uint8_t*)MALLOC(txdata->datalen, "Tx Data Bytes");
1556 txdata->data_is_owned = false;
1557 (*env)->GetByteArrayRegion (env, bytes, 0, txdata->datalen, txdata->data);
1558 return (long)txdata;
1560 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_txpointer_1free (JNIEnv * env, jclass _b, jlong ptr) {
1561 LDKTransaction *tx = (LDKTransaction*)ptr;
1562 tx->data_is_owned = true;
1563 Transaction_free(*tx);
1566 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_vec_1slice_1len (JNIEnv * env, jclass _a, jlong ptr) {
1567 // Check offsets of a few Vec types are all consistent as we're meant to be generic across types
1568 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_SignatureZ, datalen), "Vec<*> needs to be mapped identically");
1569 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_MessageSendEventZ, datalen), "Vec<*> needs to be mapped identically");
1570 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_EventZ, datalen), "Vec<*> needs to be mapped identically");
1571 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_C2Tuple_usizeTransactionZZ, datalen), "Vec<*> needs to be mapped identically");
1572 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)ptr;
1573 return (long)vec->datalen;
1575 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1empty_1slice_1vec (JNIEnv * _env, jclass _b) {
1576 // Check sizes of a few Vec types are all consistent as we're meant to be generic across types
1577 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_SignatureZ), "Vec<*> needs to be mapped identically");
1578 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_MessageSendEventZ), "Vec<*> needs to be mapped identically");
1579 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_EventZ), "Vec<*> needs to be mapped identically");
1580 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_C2Tuple_usizeTransactionZZ), "Vec<*> needs to be mapped identically");
1581 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "Empty LDKCVec");
1587 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
1588 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
1589 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
1590 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
1594 with open(sys.argv[3] + "/structs/CommonBase.java", "a") as out_java_struct:
1595 out_java_struct.write("""package org.ldk.structs;
1596 import java.util.LinkedList;
1599 LinkedList<Object> ptrs_to = new LinkedList();
1600 protected CommonBase(long ptr) { this.ptr = ptr; }
1601 public long _test_only_get_ptr() { return this.ptr; }
1605 in_block_comment = False
1606 cur_block_obj = None
1608 const_val_regex = re.compile("^extern const ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$")
1610 line_indicates_result_regex = re.compile("^ (LDKCResultPtr_[A-Za-z_0-9]*) contents;$")
1611 line_indicates_vec_regex = re.compile("^ ([A-Za-z_0-9]*) \*data;$")
1612 line_indicates_opaque_regex = re.compile("^ bool is_owned;$")
1613 line_indicates_trait_regex = re.compile("^ ([A-Za-z_0-9]* \*?)\(\*([A-Za-z_0-9]*)\)\((const )?void \*this_arg(.*)\);$")
1614 assert(line_indicates_trait_regex.match(" uintptr_t (*send_data)(void *this_arg, LDKu8slice data, bool resume_read);"))
1615 assert(line_indicates_trait_regex.match(" LDKCVec_MessageSendEventZ (*get_and_clear_pending_msg_events)(const void *this_arg);"))
1616 assert(line_indicates_trait_regex.match(" void *(*clone)(const void *this_arg);"))
1617 line_field_var_regex = re.compile("^ ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$")
1618 assert(line_field_var_regex.match(" LDKMessageSendEventsProvider MessageSendEventsProvider;"))
1619 assert(line_field_var_regex.match(" LDKChannelPublicKeys pubkeys;"))
1620 struct_name_regex = re.compile("^typedef (struct|enum|union) (MUST_USE_STRUCT )?(LDK[A-Za-z_0-9]*) {$")
1621 assert(struct_name_regex.match("typedef struct LDKCVecTempl_u8 {"))
1622 assert(struct_name_regex.match("typedef enum LDKNetwork {"))
1623 struct_alias_regex = re.compile("^typedef (LDK[A-Za-z_0-9]*) (LDK[A-Za-z_0-9]*);$")
1624 assert(struct_alias_regex.match("typedef LDKCResultTempl_bool__PeerHandleError LDKCResult_boolPeerHandleErrorZ;"))
1626 result_templ_structs = set()
1627 union_enum_items = {}
1628 result_ptr_struct_items = {}
1630 if in_block_comment:
1631 if line.endswith("*/\n"):
1632 in_block_comment = False
1633 elif cur_block_obj is not None:
1634 cur_block_obj = cur_block_obj + line
1635 if line.startswith("} "):
1639 obj_lines = cur_block_obj.split("\n")
1641 result_contents = None
1642 is_unitary_enum = False
1643 is_union_enum = False
1647 field_var_lines = []
1649 for idx, struct_line in enumerate(obj_lines):
1650 if struct_line.strip().startswith("/*"):
1651 in_block_comment = True
1652 if in_block_comment:
1653 if struct_line.endswith("*/"):
1654 in_block_comment = False
1656 struct_name_match = struct_name_regex.match(struct_line)
1657 if struct_name_match is not None:
1658 struct_name = struct_name_match.group(3)
1659 if struct_name_match.group(1) == "enum":
1660 if not struct_name.endswith("_Tag"):
1661 is_unitary_enum = True
1663 is_union_enum = True
1664 elif struct_name_match.group(1) == "union":
1666 if line_indicates_opaque_regex.match(struct_line):
1668 result_match = line_indicates_result_regex.match(struct_line)
1669 if result_match is not None:
1670 result_contents = result_match.group(1)
1671 vec_ty_match = line_indicates_vec_regex.match(struct_line)
1672 if vec_ty_match is not None and struct_name.startswith("LDKCVecTempl_"):
1673 vec_ty = vec_ty_match.group(1)
1674 elif struct_name.startswith("LDKC2TupleTempl_") or struct_name.startswith("LDKC3TupleTempl_"):
1676 trait_fn_match = line_indicates_trait_regex.match(struct_line)
1677 if trait_fn_match is not None:
1678 trait_fn_lines.append(trait_fn_match)
1679 field_var_match = line_field_var_regex.match(struct_line)
1680 if field_var_match is not None:
1681 field_var_lines.append(field_var_match)
1682 field_lines.append(struct_line)
1684 assert(struct_name is not None)
1685 assert(len(trait_fn_lines) == 0 or not (is_opaque or is_unitary_enum or is_union_enum or is_union or result_contents is not None or vec_ty is not None))
1686 assert(not is_opaque or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_union or result_contents is not None or vec_ty is not None))
1687 assert(not is_unitary_enum or not (len(trait_fn_lines) != 0 or is_opaque or is_union_enum or is_union or result_contents is not None or vec_ty is not None))
1688 assert(not is_union_enum or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_opaque or is_union or result_contents is not None or vec_ty is not None))
1689 assert(not is_union or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_opaque or result_contents is not None or vec_ty is not None))
1690 assert(result_contents is None or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_opaque or is_union or vec_ty is not None))
1691 assert(vec_ty is None or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_opaque or is_union or result_contents is not None))
1694 opaque_structs.add(struct_name)
1695 with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "w") as out_java_struct:
1696 out_java_struct.write(hu_struct_file_prefix)
1697 out_java_struct.write("public class " + struct_name.replace("LDK","") + " extends CommonBase")
1698 if struct_name.startswith("LDKLocked"):
1699 out_java_struct.write(" implements AutoCloseable")
1700 out_java_struct.write(" {\n")
1701 out_java_struct.write("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); }\n")
1702 if struct_name.startswith("LDKLocked"):
1703 out_java_struct.write("\t@Override public void close() {\n")
1705 out_java_struct.write("\t@Override @SuppressWarnings(\"deprecation\")\n")
1706 out_java_struct.write("\tprotected void finalize() throws Throwable {\n")
1707 out_java_struct.write("\t\tsuper.finalize();\n")
1708 out_java_struct.write("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); }\n")
1709 out_java_struct.write("\t}\n\n")
1710 elif result_contents is not None:
1711 result_templ_structs.add(struct_name)
1712 assert result_contents in result_ptr_struct_items
1713 elif struct_name.startswith("LDKCResultPtr_"):
1714 for line in field_lines:
1715 if line.endswith("*result;"):
1716 res_ty = line[:-8].strip()
1717 elif line.endswith("*err;"):
1718 err_ty = line[:-5].strip()
1719 result_ptr_struct_items[struct_name] = (res_ty, err_ty)
1721 out_java.write("\tpublic static native long " + struct_name + "_new(")
1722 write_c("JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new(JNIEnv *_env, jclass _b")
1724 for idx, line in enumerate(field_lines):
1725 if idx != 0 and idx < len(field_lines) - 2:
1726 ty_info = java_c_types(line.strip(';'), None)
1728 out_java.write(", ")
1729 e = chr(ord('a') + idx - 1)
1730 out_java.write(ty_info.java_ty + " " + e)
1731 write_c(", " + ty_info.c_ty + " " + e)
1732 ty_list.append(ty_info)
1733 tuple_types[struct_name] = (ty_list, struct_name)
1734 out_java.write(");\n")
1736 write_c("\t" + struct_name + "* ret = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n")
1737 for idx, line in enumerate(field_lines):
1738 if idx != 0 and idx < len(field_lines) - 2:
1739 ty_info = map_type(line.strip(';'), False, None, False, False)
1740 e = chr(ord('a') + idx - 1)
1741 if ty_info.arg_conv is not None:
1742 write_c("\t" + ty_info.arg_conv.replace("\n", "\n\t"))
1743 write_c("\n\tret->" + e + " = " + ty_info.arg_conv_name + ";\n")
1745 write_c("\tret->" + e + " = " + e + ";\n")
1746 if ty_info.arg_conv_cleanup is not None:
1747 write_c("\t//TODO: Really need to call " + ty_info.arg_conv_cleanup + " here\n")
1748 write_c("\treturn (long)ret;\n")
1750 elif vec_ty is not None:
1751 if vec_ty in opaque_structs:
1752 out_java.write("\tpublic static native long[] " + struct_name + "_arr_info(long vec_ptr);\n")
1753 write_c("JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {\n")
1755 out_java.write("\tpublic static native VecOrSliceDef " + struct_name + "_arr_info(long vec_ptr);\n")
1756 write_c("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {\n")
1757 write_c("\t" + struct_name + " *vec = (" + struct_name + "*)ptr;\n")
1758 if vec_ty in opaque_structs:
1759 write_c("\tjlongArray ret = (*env)->NewLongArray(env, vec->datalen);\n")
1760 write_c("\tjlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);\n")
1761 write_c("\tfor (size_t i = 0; i < vec->datalen; i++) {\n")
1762 write_c("\t\tCHECK((((long)vec->data[i].inner) & 1) == 0);\n")
1763 write_c("\t\tret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);\n")
1765 write_c("\t(*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);\n")
1766 write_c("\treturn ret;\n")
1768 write_c("\treturn (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(" + vec_ty + "));\n")
1771 ty_info = map_type(vec_ty + " arr_elem", False, None, False, False)
1772 if len(ty_info.java_fn_ty_arg) == 1: # ie we're a primitive of some form
1773 out_java.write("\tpublic static native long " + struct_name + "_new(" + ty_info.java_ty + "[] elems);\n")
1774 write_c("JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new(JNIEnv *env, jclass _b, j" + ty_info.java_ty + "Array elems){\n")
1775 write_c("\t" + struct_name + " *ret = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n")
1776 write_c("\tret->datalen = (*env)->GetArrayLength(env, elems);\n")
1777 write_c("\tif (ret->datalen == 0) {\n")
1778 write_c("\t\tret->data = NULL;\n")
1779 write_c("\t} else {\n")
1780 write_c("\t\tret->data = MALLOC(sizeof(" + vec_ty + ") * ret->datalen, \"" + struct_name + " Data\");\n")
1781 write_c("\t\t" + ty_info.c_ty + " *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);\n")
1782 write_c("\t\tfor (size_t i = 0; i < ret->datalen; i++) {\n")
1783 if ty_info.arg_conv is not None:
1784 write_c("\t\t\t" + ty_info.c_ty + " arr_elem = java_elems[i];\n")
1785 write_c("\t\t\t" + ty_info.arg_conv.replace("\n", "\n\t\t\t") + "\n")
1786 write_c("\t\t\tret->data[i] = " + ty_info.arg_conv_name + ";\n")
1787 assert ty_info.arg_conv_cleanup is None
1789 write_c("\t\t\tret->data[i] = java_elems[i];\n")
1791 write_c("\t\t(*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);\n")
1793 write_c("\treturn (long)ret;\n")
1796 assert(struct_name.endswith("_Tag"))
1797 struct_name = struct_name[:-4]
1798 union_enum_items[struct_name] = {"field_lines": field_lines}
1799 elif struct_name.endswith("_Body") and struct_name.split("_")[0] in union_enum_items:
1800 enum_var_name = struct_name.split("_")
1801 union_enum_items[enum_var_name[0]][enum_var_name[1]] = field_lines
1802 elif struct_name in union_enum_items:
1803 map_complex_enum(struct_name, union_enum_items[struct_name])
1804 elif is_unitary_enum:
1805 map_unitary_enum(struct_name, field_lines)
1806 elif len(trait_fn_lines) > 0:
1807 trait_structs.add(struct_name)
1808 map_trait(struct_name, field_var_lines, trait_fn_lines)
1809 elif struct_name == "LDKTxOut":
1810 with open(sys.argv[3] + "/structs/TxOut.java", "w") as out_java_struct:
1811 out_java_struct.write(hu_struct_file_prefix)
1812 out_java_struct.write("public class TxOut extends CommonBase{\n")
1813 out_java_struct.write("\tTxOut(java.lang.Object _dummy, long ptr) { super(ptr); }\n")
1814 out_java_struct.write("\tlong to_c_ptr() { return 0; }\n")
1816 out_java_struct.write("}")
1818 pass # Everything remaining is a byte[] or some form
1819 cur_block_obj = None
1821 fn_ptr = fn_ptr_regex.match(line)
1822 fn_ret_arr = fn_ret_arr_regex.match(line)
1823 reg_fn = reg_fn_regex.match(line)
1824 const_val = const_val_regex.match(line)
1826 if line.startswith("#include <"):
1828 elif line.startswith("/*"):
1829 #out_java.write("\t" + line)
1830 if not line.endswith("*/\n"):
1831 in_block_comment = True
1832 elif line.startswith("typedef enum "):
1833 cur_block_obj = line
1834 elif line.startswith("typedef struct "):
1835 cur_block_obj = line
1836 elif line.startswith("typedef union "):
1837 cur_block_obj = line
1838 elif line.startswith("typedef "):
1839 alias_match = struct_alias_regex.match(line)
1840 if alias_match.group(1) in tuple_types:
1841 tuple_types[alias_match.group(2)] = (tuple_types[alias_match.group(1)][0], alias_match.group(2))
1842 tuple_types[alias_match.group(1)] = (tuple_types[alias_match.group(1)][0], alias_match.group(2))
1843 for idx, ty_info in enumerate(tuple_types[alias_match.group(1)][0]):
1844 e = chr(ord('a') + idx)
1845 out_java.write("\tpublic static native " + ty_info.java_ty + " " + alias_match.group(2) + "_get_" + e + "(long ptr);\n")
1846 write_c("JNIEXPORT " + ty_info.c_ty + " JNICALL Java_org_ldk_impl_bindings_" + alias_match.group(2).replace("_", "_1") + "_1get_1" + e + "(JNIEnv *_env, jclass _b, jlong ptr) {\n")
1847 write_c("\t" + alias_match.group(1) + " *tuple = (" + alias_match.group(1) + "*)ptr;\n")
1848 conv_info = map_type_with_info(ty_info, False, None, False, True)
1849 if conv_info.ret_conv is not None:
1850 write_c("\t" + conv_info.ret_conv[0].replace("\n", "\n\t") + "tuple->" + e + conv_info.ret_conv[1].replace("\n", "\n\t") + "\n")
1851 write_c("\treturn " + conv_info.ret_conv_name + ";\n")
1853 write_c("\treturn tuple->" + e + ";\n")
1855 elif alias_match.group(1) in result_templ_structs:
1856 result_types.add(alias_match.group(2))
1857 human_ty = alias_match.group(2).replace("LDKCResult", "Result")
1858 with open(sys.argv[3] + "/structs/" + human_ty + ".java", "w") as out_java_struct:
1859 out_java_struct.write(hu_struct_file_prefix)
1860 out_java_struct.write("public class " + human_ty + " extends CommonBase {\n")
1861 out_java_struct.write("\tprivate " + human_ty + "(Object _dummy, long ptr) { super(ptr); }\n")
1862 out_java_struct.write("\tprotected void finalize() throws Throwable {\n")
1863 out_java_struct.write("\t\tif (ptr != 0) { bindings." + alias_match.group(2).replace("LDK","") + "_free(ptr); } super.finalize();\n")
1864 out_java_struct.write("\t}\n\n")
1865 out_java_struct.write("\tstatic " + human_ty + " constr_from_ptr(long ptr) {\n")
1866 out_java_struct.write("\t\tif (bindings." + alias_match.group(2) + "_result_ok(ptr)) {\n")
1867 out_java_struct.write("\t\t\treturn new " + human_ty + "_OK(null, ptr);\n")
1868 out_java_struct.write("\t\t} else {\n")
1869 out_java_struct.write("\t\t\treturn new " + human_ty + "_Err(null, ptr);\n")
1870 out_java_struct.write("\t\t}\n")
1871 out_java_struct.write("\t}\n")
1873 contents_ty = alias_match.group(1).replace("LDKCResultTempl", "LDKCResultPtr")
1874 res_ty, err_ty = result_ptr_struct_items[contents_ty]
1875 res_map = map_type(res_ty + " res", True, None, False, True)
1876 err_map = map_type(err_ty + " err", True, None, False, True)
1878 out_java.write("\tpublic static native boolean " + alias_match.group(2) + "_result_ok(long arg);\n")
1879 write_c("JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_" + alias_match.group(2).replace("_", "_1") + "_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {\n")
1880 write_c("\treturn ((" + alias_match.group(2) + "*)arg)->result_ok;\n")
1883 out_java.write("\tpublic static native " + res_map.java_ty + " " + alias_match.group(2) + "_get_ok(long arg);\n")
1884 write_c("JNIEXPORT " + res_map.c_ty + " JNICALL Java_org_ldk_impl_bindings_" + alias_match.group(2).replace("_", "_1") + "_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {\n")
1885 write_c("\t" + alias_match.group(2) + " *val = (" + alias_match.group(2) + "*)arg;\n")
1886 write_c("\tCHECK(val->result_ok);\n\t")
1887 out_java_struct.write("\tpublic static final class " + human_ty + "_OK extends " + human_ty + " {\n")
1888 if res_map.ret_conv is not None:
1889 write_c(res_map.ret_conv[0].replace("\n", "\n\t") + "(*val->contents.result)")
1890 write_c(res_map.ret_conv[1].replace("\n", "\n\t") + "\n\treturn " + res_map.ret_conv_name)
1892 write_c("return *val->contents.result")
1895 out_java_struct.write("\t\tpublic final " + res_map.java_hu_ty + " res;\n")
1896 out_java_struct.write("\t\tprivate " + human_ty + "_OK(Object _dummy, long ptr) {\n")
1897 out_java_struct.write("\t\t\tsuper(_dummy, ptr);\n")
1898 if res_map.to_hu_conv is not None:
1899 out_java_struct.write("\t\t\t" + res_map.java_ty + " res = bindings." + alias_match.group(2) + "_get_ok(ptr);\n")
1900 out_java_struct.write("\t\t\t" + res_map.to_hu_conv.replace("\n", "\n\t\t\t"))
1901 out_java_struct.write("\n\t\t\tthis.res = " + res_map.to_hu_conv_name + ";\n")
1903 out_java_struct.write("\t\t\tthis.res = bindings." + alias_match.group(2) + "_get_ok(ptr);\n")
1904 out_java_struct.write("\t\t}\n")
1905 if alias_match.group(2).startswith("LDKCResult_None"):
1906 out_java_struct.write("\t\tpublic " + human_ty + "_OK() {\n\t\t\tthis(null, bindings.C" + human_ty + "_ok());\n")
1908 out_java_struct.write("\t\tpublic " + human_ty + "_OK(" + res_map.java_hu_ty + " res) {\n")
1909 if res_map.from_hu_conv is not None:
1910 out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_ok(" + res_map.from_hu_conv[0] + "));\n")
1911 if res_map.from_hu_conv[1] != "":
1912 out_java_struct.write("\t\t\t" + res_map.from_hu_conv[1] + ";\n")
1914 out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_ok(res));\n")
1915 out_java_struct.write("\t\t}\n\t}\n\n")
1917 out_java.write("\tpublic static native " + err_map.java_ty + " " + alias_match.group(2) + "_get_err(long arg);\n")
1918 write_c("JNIEXPORT " + err_map.c_ty + " JNICALL Java_org_ldk_impl_bindings_" + alias_match.group(2).replace("_", "_1") + "_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {\n")
1919 write_c("\t" + alias_match.group(2) + " *val = (" + alias_match.group(2) + "*)arg;\n")
1920 write_c("\tCHECK(!val->result_ok);\n\t")
1921 out_java_struct.write("\tpublic static final class " + human_ty + "_Err extends " + human_ty + " {\n")
1922 if err_map.ret_conv is not None:
1923 write_c(err_map.ret_conv[0].replace("\n", "\n\t") + "(*val->contents.err)")
1924 write_c(err_map.ret_conv[1].replace("\n", "\n\t") + "\n\treturn " + err_map.ret_conv_name)
1926 write_c("return *val->contents.err")
1929 out_java_struct.write("\t\tpublic final " + err_map.java_hu_ty + " err;\n")
1930 out_java_struct.write("\t\tprivate " + human_ty + "_Err(Object _dummy, long ptr) {\n")
1931 out_java_struct.write("\t\t\tsuper(_dummy, ptr);\n")
1932 if err_map.to_hu_conv is not None:
1933 out_java_struct.write("\t\t\t" + err_map.java_ty + " err = bindings." + alias_match.group(2) + "_get_err(ptr);\n")
1934 out_java_struct.write("\t\t\t" + err_map.to_hu_conv.replace("\n", "\n\t\t\t"))
1935 out_java_struct.write("\n\t\t\tthis.err = " + err_map.to_hu_conv_name + ";\n")
1937 out_java_struct.write("\t\t\tthis.err = bindings." + alias_match.group(2) + "_get_err(ptr);\n")
1938 out_java_struct.write("\t\t}\n")
1940 if alias_match.group(2).endswith("NoneZ"):
1941 out_java_struct.write("\t\tpublic " + human_ty + "_Err() {\n\t\t\tthis(null, bindings.C" + human_ty + "_err());\n")
1943 out_java_struct.write("\t\tpublic " + human_ty + "_Err(" + err_map.java_hu_ty + " err) {\n")
1944 if err_map.from_hu_conv is not None:
1945 out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_err(" + err_map.from_hu_conv[0] + "));\n")
1946 if err_map.from_hu_conv[1] != "":
1947 out_java_struct.write("\t\t\t" + err_map.from_hu_conv[1] + ";\n")
1949 out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_err(err));\n")
1950 out_java_struct.write("\t\t}\n\t}\n}\n")
1951 elif fn_ptr is not None:
1952 map_fn(line, fn_ptr, None, None)
1953 elif fn_ret_arr is not None:
1954 map_fn(line, fn_ret_arr, fn_ret_arr.group(4), None)
1955 elif reg_fn is not None:
1956 map_fn(line, reg_fn, None, None)
1957 elif const_val_regex is not None:
1958 # TODO Map const variables
1961 assert(line == "\n")
1963 out_java.write("}\n")
1964 for struct_name in opaque_structs:
1965 with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "a") as out_java_struct:
1966 out_java_struct.write("}\n")
1967 for struct_name in trait_structs:
1968 with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "a") as out_java_struct:
1969 out_java_struct.write("}\n")
1970 with open(sys.argv[4], "w") as out_c:
1971 out_c.write(c_file_pfx)
1972 for ty in c_array_class_caches:
1973 if ty + "_clz" in c_file:
1974 out_c.write("static jclass " + ty + "_clz = NULL;\n")
1975 out_c.write("JNIEXPORT void Java_org_ldk_impl_bindings_init_1class_1cache(JNIEnv * env, jclass _b) {\n")
1976 for ty in c_array_class_caches:
1977 if ty + "_clz" in c_file:
1978 out_c.write("\t" + ty + "_clz = (*env)->FindClass(env, \"" + ty.replace("arr_of_", "[") + "\");\n")
1979 out_c.write("\tCHECK(" + ty + "_clz != NULL);\n")
1980 out_c.write("\t" + ty + "_clz = (*env)->NewGlobalRef(env, " + ty + "_clz);\n")