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.is_native_primitive = ty_info.is_native_primitive
179 self.arg_name = arg_name
180 self.arg_conv = arg_conv
181 self.arg_conv_name = arg_conv_name
182 self.arg_conv_cleanup = arg_conv_cleanup
183 self.ret_conv = ret_conv
184 self.ret_conv_name = ret_conv_name
185 self.to_hu_conv = to_hu_conv
186 self.to_hu_conv_name = to_hu_conv_name
187 self.from_hu_conv = from_hu_conv
191 out_java.write(self.java_ty)
193 def print_name(self):
194 if self.arg_name != "":
195 out_java.write(" " + self.arg_name)
196 write_c(" " + self.arg_name)
198 out_java.write(" arg")
201 def camel_to_snake(s):
202 # Convert camel case to snake case, in a way that appears to match cbindgen
208 if lastchar.isupper():
209 if not char.isupper() and not lastund:
214 ret = ret + lastchar.lower()
217 if char.isupper() and not lastund:
225 return (ret + lastchar.lower()).strip("_")
227 unitary_enums = set()
228 complex_enums = set()
229 opaque_structs = set()
230 trait_structs = set()
234 var_is_arr_regex = re.compile("\(\*([A-za-z0-9_]*)\)\[([a-z0-9]*)\]")
235 var_ty_regex = re.compile("([A-za-z_0-9]*)(.*)")
236 java_c_types_none_allowed = True # Unset when we do the real pass that populates the above sets
237 def java_c_types(fn_arg, ret_arr_len):
238 fn_arg = fn_arg.strip()
239 if fn_arg.startswith("MUST_USE_RES "):
242 if fn_arg.startswith("const "):
245 if fn_arg.startswith("struct "):
247 if fn_arg.startswith("enum "):
249 fn_arg = fn_arg.replace("NONNULL_PTR", "")
256 if fn_arg.startswith("LDKThirtyTwoBytes"):
257 fn_arg = "uint8_t (*" + fn_arg[18:] + ")[32]"
258 assert var_is_arr_regex.match(fn_arg[8:])
259 rust_obj = "LDKThirtyTwoBytes"
261 elif fn_arg.startswith("LDKPublicKey"):
262 fn_arg = "uint8_t (*" + fn_arg[13:] + ")[33]"
263 assert var_is_arr_regex.match(fn_arg[8:])
264 rust_obj = "LDKPublicKey"
265 arr_access = "compressed_form"
266 elif fn_arg.startswith("LDKSecretKey"):
267 fn_arg = "uint8_t (*" + fn_arg[13:] + ")[32]"
268 assert var_is_arr_regex.match(fn_arg[8:])
269 rust_obj = "LDKSecretKey"
271 elif fn_arg.startswith("LDKSignature"):
272 fn_arg = "uint8_t (*" + fn_arg[13:] + ")[64]"
273 assert var_is_arr_regex.match(fn_arg[8:])
274 rust_obj = "LDKSignature"
275 arr_access = "compact_form"
276 elif fn_arg.startswith("LDKThreeBytes"):
277 fn_arg = "uint8_t (*" + fn_arg[14:] + ")[3]"
278 assert var_is_arr_regex.match(fn_arg[8:])
279 rust_obj = "LDKThreeBytes"
281 elif fn_arg.startswith("LDKFourBytes"):
282 fn_arg = "uint8_t (*" + fn_arg[13:] + ")[4]"
283 assert var_is_arr_regex.match(fn_arg[8:])
284 rust_obj = "LDKFourBytes"
286 elif fn_arg.startswith("LDKSixteenBytes"):
287 fn_arg = "uint8_t (*" + fn_arg[16:] + ")[16]"
288 assert var_is_arr_regex.match(fn_arg[8:])
289 rust_obj = "LDKSixteenBytes"
291 elif fn_arg.startswith("LDKTenBytes"):
292 fn_arg = "uint8_t (*" + fn_arg[12:] + ")[10]"
293 assert var_is_arr_regex.match(fn_arg[8:])
294 rust_obj = "LDKTenBytes"
296 elif fn_arg.startswith("LDKu8slice"):
297 fn_arg = "uint8_t (*" + fn_arg[11:] + ")[datalen]"
298 assert var_is_arr_regex.match(fn_arg[8:])
299 rust_obj = "LDKu8slice"
301 elif fn_arg.startswith("LDKCVec_u8Z"):
302 fn_arg = "uint8_t (*" + fn_arg[12:] + ")[datalen]"
303 rust_obj = "LDKCVec_u8Z"
304 assert var_is_arr_regex.match(fn_arg[8:])
306 elif fn_arg.startswith("LDKTransaction"):
307 fn_arg = "uint8_t (*" + fn_arg[15:] + ")[datalen]"
308 rust_obj = "LDKTransaction"
309 assert var_is_arr_regex.match(fn_arg[8:])
311 elif fn_arg.startswith("LDKCVec_"):
314 fn_arg = fn_arg.replace("*", "")
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 assert java_c_types_none_allowed
330 res.pass_by_ref = True
331 if res.is_native_primitive or res.passed_as_ptr:
332 return TypeInfo(rust_obj=fn_arg.split(" ")[0], java_ty=res.java_ty + "[]", java_hu_ty=res.java_hu_ty + "[]",
333 java_fn_ty_arg="[" + res.java_fn_ty_arg, c_ty=res.c_ty + "Array", passed_as_ptr=False, is_ptr=is_ptr,
334 var_name=res.var_name, arr_len="datalen", arr_access="data", subty=res, is_native_primitive=False)
336 return TypeInfo(rust_obj=fn_arg.split(" ")[0], java_ty=res.java_ty + "[]", java_hu_ty=res.java_hu_ty + "[]",
337 java_fn_ty_arg="[" + res.java_fn_ty_arg, c_ty="jobjectArray", passed_as_ptr=False, is_ptr=is_ptr,
338 var_name=res.var_name, arr_len="datalen", arr_access="data", subty=res, is_native_primitive=False)
342 if fn_arg.startswith("void"):
346 fn_arg = fn_arg[4:].strip()
348 elif fn_arg.startswith("bool"):
352 fn_arg = fn_arg[4:].strip()
354 elif fn_arg.startswith("uint8_t"):
358 fn_arg = fn_arg[7:].strip()
360 elif fn_arg.startswith("uint16_t"):
364 fn_arg = fn_arg[8:].strip()
366 elif fn_arg.startswith("uint32_t"):
370 fn_arg = fn_arg[8:].strip()
372 elif fn_arg.startswith("uint64_t") or fn_arg.startswith("uintptr_t"):
376 if fn_arg.startswith("uint64_t"):
377 fn_arg = fn_arg[8:].strip()
379 fn_arg = fn_arg[9:].strip()
381 elif is_const and fn_arg.startswith("char *"):
384 fn_ty_arg = "Ljava/lang/String;"
385 fn_arg = fn_arg[6:].strip()
386 elif fn_arg.startswith("LDKStr"):
389 fn_ty_arg = "Ljava/lang/String;"
390 fn_arg = fn_arg[6:].strip()
394 ma = var_ty_regex.match(fn_arg)
395 if ma.group(1).strip() in unitary_enums:
396 java_ty = ma.group(1).strip()
398 fn_ty_arg = "Lorg/ldk/enums/" + ma.group(1).strip() + ";"
399 fn_arg = ma.group(2).strip()
400 rust_obj = ma.group(1).strip()
402 elif ma.group(1).strip().startswith("LDKC2Tuple"):
404 java_hu_ty = "TwoTuple<"
405 if not ma.group(1).strip() in tuple_types:
406 assert java_c_types_none_allowed
408 for idx, ty_info in enumerate(tuple_types[ma.group(1).strip()][0]):
410 java_hu_ty = java_hu_ty + ", "
411 if ty_info.is_native_primitive:
412 if ty_info.java_hu_ty == "int":
413 java_hu_ty = java_hu_ty + "Integer" # Java concrete integer type is Integer, not Int
415 java_hu_ty = java_hu_ty + ty_info.java_hu_ty.title() # If we're a primitive, capitalize the first letter
417 java_hu_ty = java_hu_ty + ty_info.java_hu_ty
418 java_hu_ty = java_hu_ty + ">"
421 fn_arg = ma.group(2).strip()
422 rust_obj = ma.group(1).strip()
424 elif ma.group(1).strip().startswith("LDKC3Tuple"):
426 java_hu_ty = "ThreeTuple<"
427 if not ma.group(1).strip() in tuple_types:
428 assert java_c_types_none_allowed
430 for idx, ty_info in enumerate(tuple_types[ma.group(1).strip()][0]):
432 java_hu_ty = java_hu_ty + ", "
433 if ty_info.is_native_primitive:
434 if ty_info.java_hu_ty == "int":
435 java_hu_ty = java_hu_ty + "Integer" # Java concrete integer type is Integer, not Int
437 java_hu_ty = java_hu_ty + ty_info.java_hu_ty.title() # If we're a primitive, capitalize the first letter
439 java_hu_ty = java_hu_ty + ty_info.java_hu_ty
440 java_hu_ty = java_hu_ty + ">"
443 fn_arg = ma.group(2).strip()
444 rust_obj = ma.group(1).strip()
448 java_hu_ty = ma.group(1).strip().replace("LDKCResult", "Result").replace("LDK", "")
451 fn_arg = ma.group(2).strip()
452 rust_obj = ma.group(1).strip()
455 if fn_arg.startswith(" *") or fn_arg.startswith("*"):
456 fn_arg = fn_arg.replace("*", "").strip()
463 var_is_arr = var_is_arr_regex.match(fn_arg)
464 if var_is_arr is not None or ret_arr_len is not None:
465 assert(not take_by_ptr)
467 java_ty = java_ty + "[]"
468 c_ty = c_ty + "Array"
469 if var_is_arr is not None:
470 if var_is_arr.group(1) == "":
471 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,
472 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)
473 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,
474 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)
476 if java_hu_ty is None:
478 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,
479 is_ptr=is_ptr, var_name=fn_arg, arr_len=arr_len, arr_access=arr_access, is_native_primitive=is_primitive)
481 fn_ptr_regex = re.compile("^extern const ([A-Za-z_0-9\* ]*) \(\*(.*)\)\((.*)\);$")
482 fn_ret_arr_regex = re.compile("(.*) \(\*(.*)\((.*)\)\)\[([0-9]*)\];$")
483 reg_fn_regex = re.compile("([A-Za-z_0-9\* ]* \*?)([a-zA-Z_0-9]*)\((.*)\);$")
486 c_array_class_caches = set()
487 with open(sys.argv[1]) as in_h:
489 reg_fn = reg_fn_regex.match(line)
490 if reg_fn is not None:
491 if reg_fn.group(2).endswith("_clone"):
492 clone_fns.add(reg_fn.group(2))
494 rty = java_c_types(reg_fn.group(1), None)
495 if rty is not None and rty.rust_obj is not None and reg_fn.group(2) == rty.java_hu_ty + "_new":
496 constructor_fns[rty.rust_obj] = reg_fn.group(3)
498 arr_fn = fn_ret_arr_regex.match(line)
499 if arr_fn is not None:
500 if arr_fn.group(2).endswith("_clone"):
501 clone_fns.add(arr_fn.group(2))
502 # No object constructors return arrays, as then they wouldn't be an object constructor
505 # Define some manual clones...
506 clone_fns.add("ThirtyTwoBytes_clone")
507 write_c("static inline struct LDKThirtyTwoBytes ThirtyTwoBytes_clone(const struct LDKThirtyTwoBytes *orig) { struct LDKThirtyTwoBytes ret; memcpy(ret.data, orig->data, 32); return ret; }\n")
509 java_c_types_none_allowed = False # C structs created by cbindgen are declared in dependency order
511 with open(sys.argv[1]) as in_h, open(sys.argv[2], "w") as out_java:
512 def map_type(fn_arg, print_void, ret_arr_len, is_free, holds_ref):
513 ty_info = java_c_types(fn_arg, ret_arr_len)
514 return map_type_with_info(ty_info, print_void, ret_arr_len, is_free, holds_ref)
516 def map_type_with_info(ty_info, print_void, ret_arr_len, is_free, holds_ref):
517 if ty_info.c_ty == "void":
519 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
520 arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None,
521 ret_conv = None, ret_conv_name = None, to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
522 if ty_info.c_ty.endswith("Array"):
523 arr_len = ty_info.arr_len
524 if arr_len is not None:
525 arr_name = ty_info.var_name
528 arr_len = ret_arr_len
529 if ty_info.c_ty == "jbyteArray":
530 ret_conv = ("jbyteArray " + arr_name + "_arr = (*_env)->NewByteArray(_env, " + arr_len + ");\n" + "(*_env)->SetByteArrayRegion(_env, " + arr_name + "_arr, 0, " + arr_len + ", ", "")
531 arg_conv_cleanup = None
532 if not arr_len.isdigit():
533 arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n"
534 arg_conv = arg_conv + arr_name + "_ref." + arr_len + " = (*_env)->GetArrayLength (_env, " + arr_name + ");\n"
535 if (not ty_info.is_ptr or not holds_ref) and ty_info.rust_obj != "LDKu8slice":
536 arg_conv = arg_conv + arr_name + "_ref." + ty_info.arr_access + " = MALLOC(" + arr_name + "_ref." + arr_len + ", \"" + ty_info.rust_obj + " Bytes\");\n"
537 arg_conv = arg_conv + "(*_env)->GetByteArrayRegion(_env, " + arr_name + ", 0, " + arr_name + "_ref." + arr_len + ", " + arr_name + "_ref." + ty_info.arr_access + ");"
539 arg_conv = arg_conv + arr_name + "_ref." + ty_info.arr_access + " = (*_env)->GetByteArrayElements (_env, " + arr_name + ", NULL);"
540 arg_conv_cleanup = "(*_env)->ReleaseByteArrayElements(_env, " + arr_name + ", (int8_t*)" + arr_name + "_ref." + ty_info.arr_access + ", 0);"
541 if ty_info.rust_obj == "LDKTransaction":
542 arg_conv = arg_conv + "\n" + arr_name + "_ref.data_is_owned = " + str(holds_ref).lower() + ";"
543 ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "")
544 ret_conv = (ret_conv[0], ";\njbyteArray " + arr_name + "_arr = (*_env)->NewByteArray(_env, " + arr_name + "_var." + arr_len + ");\n")
545 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 + ");")
546 if not holds_ref and ty_info.rust_obj != "LDKu8slice":
547 ret_conv = (ret_conv[0], ret_conv[1] + "\n" + ty_info.rust_obj.replace("LDK", "") + "_free(" + arr_name + "_var);")
548 elif ty_info.rust_obj is not None:
549 arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n"
550 arg_conv = arg_conv + "CHECK((*_env)->GetArrayLength (_env, " + arr_name + ") == " + arr_len + ");\n"
551 arg_conv = arg_conv + "(*_env)->GetByteArrayRegion (_env, " + arr_name + ", 0, " + arr_len + ", " + arr_name + "_ref." + ty_info.arr_access + ");"
552 ret_conv = (ret_conv[0], "." + ty_info.arr_access + ");")
554 arg_conv = "unsigned char " + arr_name + "_arr[" + arr_len + "];\n"
555 arg_conv = arg_conv + "CHECK((*_env)->GetArrayLength (_env, " + arr_name + ") == " + arr_len + ");\n"
556 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;"
557 ret_conv = (ret_conv[0] + "*", ");")
558 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
559 arg_conv = arg_conv, arg_conv_name = arr_name + "_ref", arg_conv_cleanup = arg_conv_cleanup,
560 ret_conv = ret_conv, ret_conv_name = arr_name + "_arr", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
562 assert not arr_len.isdigit() # fixed length arrays not implemented
563 assert ty_info.java_ty[len(ty_info.java_ty) - 2:] == "[]"
564 conv_name = "arr_conv_" + str(len(ty_info.java_hu_ty))
565 idxc = chr(ord('a') + (len(ty_info.java_hu_ty) % 26))
566 ty_info.subty.var_name = conv_name
567 #XXX: We'd really prefer to only ever set to False, avoiding lots of clone, but need smarter free logic
568 #if ty_info.is_ptr or holds_ref:
569 # ty_info.subty.requires_clone = False
570 ty_info.subty.requires_clone = not ty_info.is_ptr or not holds_ref
571 subty = map_type_with_info(ty_info.subty, False, None, is_free, holds_ref)
574 arg_conv = ty_info.rust_obj + " " + arr_name + "_constr;\n"
575 arg_conv = arg_conv + arr_name + "_constr." + arr_len + " = (*_env)->GetArrayLength (_env, " + arr_name + ");\n"
576 arg_conv = arg_conv + "if (" + arr_name + "_constr." + arr_len + " > 0)\n"
577 if subty.rust_obj is None:
580 szof = subty.rust_obj
581 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"
582 arg_conv = arg_conv + "else\n"
583 arg_conv = arg_conv + "\t" + arr_name + "_constr." + ty_info.arr_access + " = NULL;\n"
584 if not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
585 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"
586 arg_conv = arg_conv + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_constr." + arr_len + "; " + idxc + "++) {\n"
587 if not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
588 arg_conv = arg_conv + "\t" + ty_info.java_ty.strip("[]") + " " + conv_name + " = " + arr_name + "_vals[" + idxc + "];"
589 if subty.arg_conv is not None:
590 arg_conv = arg_conv + "\n\t" + subty.arg_conv.replace("\n", "\n\t")
592 arg_conv = arg_conv + "\tjobject " + conv_name + " = (*_env)->GetObjectArrayElement(_env, " + arr_name + ", " + idxc + ");\n"
593 arg_conv = arg_conv + "\t" + subty.arg_conv.replace("\n", "\n\t")
594 arg_conv = arg_conv + "\n\t" + arr_name + "_constr." + ty_info.arr_access + "[" + idxc + "] = " + subty.arg_conv_name + ";\n}"
595 if not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
596 arg_conv = arg_conv + "\n(*_env)->Release" + ty_info.java_ty.strip("[]").title() + "ArrayElements (_env, " + arr_name + ", " + arr_name + "_vals, 0);"
598 arg_conv_name = "&" + arr_name + "_constr"
600 arg_conv_name = arr_name + "_constr"
601 arg_conv_cleanup = None
603 arg_conv_cleanup = "FREE(" + arr_name + "_constr." + ty_info.arr_access + ");"
605 if arr_name == "arg":
607 ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "")
608 if subty.ret_conv is None:
609 ret_conv = ("DUMMY", "DUMMY")
610 elif not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"):
611 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")
612 ret_conv = (ret_conv[0], ret_conv[1] + subty.c_ty + " *" + arr_name + "_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, " + arr_name + "_arr, NULL);\n")
613 ret_conv = (ret_conv[0], ret_conv[1] + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_var." + arr_len + "; " + idxc + "++) {\n")
614 ret_conv = (ret_conv[0], ret_conv[1] + "\t" + subty.ret_conv[0].replace("\n", "\n\t"))
615 ret_conv = (ret_conv[0], ret_conv[1] + arr_name + "_var." + ty_info.arr_access + "[" + idxc + "]" + subty.ret_conv[1].replace("\n", "\n\t"))
616 ret_conv = (ret_conv[0], ret_conv[1] + "\n\t" + arr_name + "_arr_ptr[" + idxc + "] = " + subty.ret_conv_name + ";\n")
617 ret_conv = (ret_conv[0], ret_conv[1] + "}\n(*_env)->ReleasePrimitiveArrayCritical(_env, " + arr_name + "_arr, " + arr_name + "_arr_ptr, 0);")
619 assert ty_info.java_fn_ty_arg.startswith("[")
620 clz_var = ty_info.java_fn_ty_arg[1:].replace("[", "arr_of_")
621 c_array_class_caches.add(clz_var)
622 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")
623 ret_conv = (ret_conv[0], ret_conv[1] + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_var." + arr_len + "; " + idxc + "++) {\n")
624 ret_conv = (ret_conv[0], ret_conv[1] + "\t" + subty.ret_conv[0].replace("\n", "\n\t"))
625 ret_conv = (ret_conv[0], ret_conv[1] + arr_name + "_var." + ty_info.arr_access + "[" + idxc + "]" + subty.ret_conv[1].replace("\n", "\n\t"))
626 ret_conv = (ret_conv[0], ret_conv[1] + "\n\t(*_env)->SetObjectArrayElement(_env, " + arr_name + "_arr, " + idxc + ", " + subty.ret_conv_name + ");\n")
627 ret_conv = (ret_conv[0], ret_conv[1] + "}")
629 # XXX: The commented if's are a bit smarter freeing, but we need to be a nudge smarter still
630 # Note that we don't drop the full vec here - we're passing ownership to java (or have cloned) or free'd by now!
631 ret_conv = (ret_conv[0], ret_conv[1] + "\nFREE(" + arr_name + "_var." + ty_info.arr_access + ");")
632 #if subty.rust_obj is not None and subty.rust_obj in opaque_structs:
633 # ret_conv = (ret_conv[0], ret_conv[1] + "\nFREE(" + arr_name + "_var." + ty_info.arr_access + ");")
635 # ret_conv = (ret_conv[0], ret_conv[1] + "\n" + ty_info.rust_obj.replace("LDK", "") + "_free(" + arr_name + "_var);")
638 to_hu_conv_name = None
639 if subty.to_hu_conv is not None:
640 to_hu_conv = ty_info.java_hu_ty + " " + conv_name + "_arr = new " + ty_info.subty.java_hu_ty.split("<")[0] + "[" + arr_name + ".length];\n"
641 to_hu_conv = to_hu_conv + "for (int " + idxc + " = 0; " + idxc + " < " + arr_name + ".length; " + idxc + "++) {\n"
642 to_hu_conv = to_hu_conv + "\t" + subty.java_ty + " " + conv_name + " = " + arr_name + "[" + idxc + "];\n"
643 to_hu_conv = to_hu_conv + "\t" + subty.to_hu_conv.replace("\n", "\n\t") + "\n"
644 to_hu_conv = to_hu_conv + "\t" + conv_name + "_arr[" + idxc + "] = " + subty.to_hu_conv_name + ";\n}"
645 to_hu_conv_name = conv_name + "_arr"
647 if subty.from_hu_conv is not None:
648 if subty.java_ty == "long" and subty.java_hu_ty != "long":
649 from_hu_conv = ("Arrays.stream(" + arr_name + ").mapToLong(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray()", "/* TODO 2 " + subty.java_hu_ty + " */")
650 elif subty.java_ty == "long":
651 from_hu_conv = ("Arrays.stream(" + arr_name + ").map(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray()", "/* TODO 2 " + subty.java_hu_ty + " */")
653 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 + " */")
655 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
656 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = arg_conv_cleanup,
657 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)
658 elif ty_info.java_ty == "String":
659 if ty_info.arr_access is None:
660 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
661 arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None,
662 ret_conv = ("jstring " + ty_info.var_name + "_conv = (*_env)->NewStringUTF(_env, ", ");"), ret_conv_name = ty_info.var_name + "_conv",
663 to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
665 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
666 arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None,
667 ret_conv = ("LDKStr " + ty_info.var_name + "_str = ",
668 ";\nchar* " + ty_info.var_name + "_buf = MALLOC(" + ty_info.var_name + "_str." + ty_info.arr_len + " + 1, \"str conv buf\");\n" +
669 "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" +
670 ty_info.var_name + "_buf[" + ty_info.var_name + "_str." + ty_info.arr_len + "] = 0;\n" +
671 "jstring " + ty_info.var_name + "_conv = (*_env)->NewStringUTF(_env, " + ty_info.var_name + "_str." + ty_info.arr_access + ");\n" +
672 "FREE(" + ty_info.var_name + "_buf);"),
673 ret_conv_name = ty_info.var_name + "_conv", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
674 elif ty_info.var_name == "" and not print_void:
675 # We don't have a parameter name, and want one, just call it arg
676 if ty_info.rust_obj is not None:
677 assert(not is_free or ty_info.rust_obj not in opaque_structs)
678 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
679 arg_conv = ty_info.rust_obj + " arg_conv = *(" + ty_info.rust_obj + "*)arg;\nFREE((void*)arg);",
680 arg_conv_name = "arg_conv", arg_conv_cleanup = None,
681 ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 7", to_hu_conv_name = None, from_hu_conv = None)
684 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
685 arg_conv = None, arg_conv_name = "arg", arg_conv_cleanup = None,
686 ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 8", to_hu_conv_name = None, from_hu_conv = None)
687 elif ty_info.rust_obj is None:
688 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
689 arg_conv = None, arg_conv_name = ty_info.var_name, arg_conv_cleanup = None,
690 ret_conv = None, ret_conv_name = None, to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
692 if ty_info.var_name == "":
693 ty_info.var_name = "ret"
695 if ty_info.rust_obj in opaque_structs:
696 opaque_arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv;\n"
697 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.inner = (void*)(" + ty_info.var_name + " & (~1));\n"
698 if ty_info.is_ptr and holds_ref:
699 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.is_owned = false;"
701 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.is_owned = (" + ty_info.var_name + " & 1) || (" + ty_info.var_name + " == 0);"
702 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:
703 if (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns:
704 # 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.
705 opaque_arg_conv = opaque_arg_conv + "\nif (" + ty_info.var_name + "_conv.inner != NULL)\n"
706 opaque_arg_conv = opaque_arg_conv + "\t" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&" + ty_info.var_name + "_conv);"
707 elif ty_info.passed_as_ptr:
708 opaque_arg_conv = opaque_arg_conv + "\n// Warning: we may need a move here but can't clone!"
710 opaque_ret_conv_suf = ";\n"
711 if not holds_ref and ty_info.is_ptr and (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns: # is_ptr, not holds_ref implies passing a pointed-to value to java, which needs copied
712 opaque_ret_conv_suf = opaque_ret_conv_suf + "if (" + ty_info.var_name + "->inner != NULL)\n"
713 opaque_ret_conv_suf = opaque_ret_conv_suf + "\t" + ty_info.var_name + "_var = " + ty_info.rust_obj.replace("LDK", "") + "_clone(" + ty_info.var_name + ");\n"
714 elif not holds_ref and ty_info.is_ptr:
715 opaque_ret_conv_suf = opaque_ret_conv_suf + "// Warning: we may need a move here but can't clone!\n"
717 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"
718 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"
720 opaque_ret_conv_suf = opaque_ret_conv_suf + "long " + ty_info.var_name + "_ref = (long)" + ty_info.var_name + "_var.inner & ~1;"
722 opaque_ret_conv_suf = opaque_ret_conv_suf + "long " + ty_info.var_name + "_ref = (long)" + ty_info.var_name + "_var.inner;\n"
723 opaque_ret_conv_suf = opaque_ret_conv_suf + "if (" + ty_info.var_name + "_var.is_owned) {\n"
724 opaque_ret_conv_suf = opaque_ret_conv_suf + "\t" + ty_info.var_name + "_ref |= 1;\n"
725 opaque_ret_conv_suf = opaque_ret_conv_suf + "}"
728 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
729 arg_conv = opaque_arg_conv, arg_conv_name = "&" + ty_info.var_name + "_conv", arg_conv_cleanup = None,
730 ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = *", opaque_ret_conv_suf),
731 ret_conv_name = ty_info.var_name + "_ref",
732 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 + ");",
733 to_hu_conv_name = ty_info.var_name + "_hu_conv",
734 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")"))
736 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
737 arg_conv = opaque_arg_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
738 ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = ", opaque_ret_conv_suf),
739 ret_conv_name = ty_info.var_name + "_ref",
740 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 + ");",
741 to_hu_conv_name = ty_info.var_name + "_hu_conv",
742 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")"))
744 if not ty_info.is_ptr:
745 if ty_info.rust_obj in unitary_enums:
746 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
747 arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = " + ty_info.rust_obj + "_from_java(_env, " + ty_info.var_name + ");",
748 arg_conv_name = ty_info.var_name + "_conv",
749 arg_conv_cleanup = None,
750 ret_conv = ("jclass " + ty_info.var_name + "_conv = " + ty_info.rust_obj + "_to_java(_env, ", ");"),
751 ret_conv_name = ty_info.var_name + "_conv", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
752 base_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = *(" + ty_info.rust_obj + "*)" + ty_info.var_name + ";"
753 if ty_info.rust_obj in trait_structs:
755 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
756 if needs_full_clone and (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns:
757 base_conv = base_conv + "\n" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(" + ty_info.var_name + ");"
759 base_conv = base_conv + "\nif (" + ty_info.var_name + "_conv.free == " + ty_info.rust_obj + "_JCalls_free) {\n"
760 base_conv = base_conv + "\t// If this_arg is a JCalls struct, then we need to increment the refcnt in it.\n"
761 base_conv = base_conv + "\t" + ty_info.rust_obj + "_JCalls_clone(" + ty_info.var_name + "_conv.this_arg);\n}"
763 base_conv = base_conv + "// Warning: we may need a move here but can't do a full clone!\n"
766 base_conv = base_conv + "\n" + "FREE((void*)" + ty_info.var_name + ");"
767 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
768 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
769 ret_conv = (ty_info.rust_obj + "* ret = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*ret = ", ";"),
770 ret_conv_name = "(long)ret",
771 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);",
772 to_hu_conv_name = "ret_hu_conv",
773 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
774 if ty_info.rust_obj != "LDKu8slice":
775 # Don't bother free'ing slices passed in - Rust doesn't auto-free the
776 # underlying unlike Vecs, and it gives Java more freedom.
777 base_conv = base_conv + "\nFREE((void*)" + ty_info.var_name + ");";
778 if ty_info.rust_obj in complex_enums:
779 ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";")
781 ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_copy = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n", "")
782 if ty_info.requires_clone == True: # Set in object array mapping
783 if (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns:
784 ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&", ");\n")
786 ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", "; // XXX: We likely need to clone here, but no _clone fn is available!\n")
788 ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", ";\n")
789 ret_conv = (ret_conv[0], ret_conv[1] + "long " + ty_info.var_name + "_ref = (long)" + ty_info.var_name + "_copy;")
790 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
791 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
792 ret_conv = ret_conv, ret_conv_name = ty_info.var_name + "_ref",
793 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);",
794 to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + ".ptr", ""))
795 if ty_info.rust_obj in result_types:
797 # If we're trying to return a ref, we have to clone.
798 # We just blindly assume its implemented and let the compiler fail if its not.
799 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 = ", ";")
800 ret_conv = (ret_conv[0], ret_conv[1] + "\n*" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(" + ty_info.var_name + "_conv);")
802 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 = ", ";")
803 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
804 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
805 ret_conv = ret_conv, ret_conv_name = "(long)" + ty_info.var_name + "_conv",
806 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 + ");",
807 to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + " != null ? " + ty_info.var_name + ".ptr : 0", ""))
808 if ty_info.rust_obj in tuple_types:
809 from_hu_conv = "bindings." + tuple_types[ty_info.rust_obj][1].replace("LDK", "") + "_new("
811 to_hu_conv_sfx = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " + ty_info.java_hu_ty + "("
813 for idx, conv in enumerate(tuple_types[ty_info.rust_obj][0]):
815 to_hu_conv_sfx = to_hu_conv_sfx + ", "
816 from_hu_conv = from_hu_conv + ", "
817 conv.var_name = ty_info.var_name + "_" + chr(idx + ord("a"))
818 conv_map = map_type_with_info(conv, False, None, is_free, holds_ref)
819 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"
820 if conv_map.to_hu_conv is not None:
821 to_hu_conv_pfx = to_hu_conv_pfx + conv_map.to_hu_conv + ";\n"
822 to_hu_conv_sfx = to_hu_conv_sfx + conv_map.to_hu_conv_name
824 to_hu_conv_sfx = to_hu_conv_sfx + ty_info.var_name + "_" + chr(idx + ord("a"))
825 if conv_map.from_hu_conv is not None:
826 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")))
827 if conv_map.from_hu_conv[1] != "":
828 from_hu_conv = from_hu_conv + "/*XXX: " + conv_map.from_hu_conv[1] + "*/"
830 from_hu_conv = from_hu_conv + ty_info.var_name + "." + chr(idx + ord("a"))
832 if conv.is_native_primitive:
834 elif (conv_map.rust_obj.replace("LDK", "") + "_clone") in clone_fns:
835 accessor = ty_info.var_name + "_ref->" + chr(idx + ord("a"))
836 clone_ret_str = clone_ret_str + "\n" + accessor + " = " + conv_map.rust_obj.replace("LDK", "") + "_clone(&" + accessor + ");"
838 clone_ret_str = clone_ret_str + "\n// XXX: We likely need to clone here, but no _clone fn is available for " + conv_map.java_hu_ty
839 if not ty_info.is_ptr and not holds_ref:
840 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 = ", ";")
841 if 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:
842 ret_conv = (ret_conv[0], ret_conv[1] + clone_ret_str)
843 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
844 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
846 ret_conv_name = "(long)" + ty_info.var_name + "_ref",
847 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 + ")", ""))
848 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
849 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
850 ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";"), ret_conv_name = ty_info.var_name + "_ref",
851 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 + ")", ""))
853 # The manually-defined types - TxOut and Transaction
854 assert ty_info.rust_obj == "LDKTxOut"
855 if not ty_info.is_ptr and not holds_ref:
856 ret_conv = ("LDKTxOut* " + ty_info.var_name + "_ref = MALLOC(sizeof(LDKTxOut), \"LDKTxOut\");\n*" + ty_info.var_name + "_ref = ", ";")
858 ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";")
859 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
860 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
861 ret_conv = ret_conv, ret_conv_name = "(long)" + ty_info.var_name + "_ref",
862 to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " +ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");",
863 to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (ty_info.var_name + ".ptr", ""))
866 if ty_info.rust_obj in complex_enums:
867 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
868 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
869 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
870 ret_conv = ("long ret_" + ty_info.var_name + " = (long)", ";"), ret_conv_name = "ret_" + ty_info.var_name,
871 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 + ");",
872 to_hu_conv_name = ty_info.var_name + "_hu_conv",
873 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")"))
874 elif ty_info.rust_obj in trait_structs:
875 if ty_info.rust_obj.replace("LDK", "") + "_clone" in clone_fns:
876 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
877 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
878 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
879 ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_clone = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n" +
880 "*" + ty_info.var_name + "_clone = " + ty_info.rust_obj.replace("LDK", "") + "_clone(", ");"),
881 ret_conv_name = "(long)" + ty_info.var_name + "_clone",
882 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);",
883 to_hu_conv_name = "ret_hu_conv",
884 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
886 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
887 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
888 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
889 ret_conv = ("long ret_" + ty_info.var_name + " = (long)", ";"), ret_conv_name = "ret_" + ty_info.var_name,
890 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);",
891 to_hu_conv_name = "ret_hu_conv",
892 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
893 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
894 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
895 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
896 ret_conv = ("long ret_" + ty_info.var_name + " = (long)", ";"), ret_conv_name = "ret_" + ty_info.var_name,
897 to_hu_conv = "TODO 3", to_hu_conv_name = None, from_hu_conv = None) # its a pointer, no conv needed
898 assert False # We should have handled every case by now.
900 def map_fn(line, re_match, ret_arr_len, c_call_string):
901 out_java.write("\t// " + line)
902 out_java.write("\tpublic static native ")
903 write_c("JNIEXPORT ")
905 is_free = re_match.group(2).endswith("_free")
906 struct_meth = re_match.group(2).split("_")[0]
908 ret_info = map_type(re_match.group(1), True, ret_arr_len, False, False)
911 if ret_info.ret_conv is not None:
912 ret_conv_pfx, ret_conv_sfx = ret_info.ret_conv
914 out_java.write(" " + re_match.group(2) + "(")
915 write_c(" JNICALL Java_org_ldk_impl_bindings_" + re_match.group(2).replace('_', '_1') + "(JNIEnv * _env, jclass _b")
918 default_constructor_args = {}
921 for idx, arg in enumerate(re_match.group(3).split(',')):
926 arg_conv_info = map_type(arg, False, None, is_free, True)
927 if arg_conv_info.c_ty != "void":
928 arg_conv_info.print_ty()
929 arg_conv_info.print_name()
930 if idx == 0 and arg_conv_info.java_hu_ty == struct_meth:
932 if arg_conv_info.arg_conv is not None and "Warning" in arg_conv_info.arg_conv:
933 if arg_conv_info.rust_obj in constructor_fns:
935 for explode_arg in constructor_fns[arg_conv_info.rust_obj].split(','):
936 explode_arg_conv = map_type(explode_arg, False, None, False, True)
937 if explode_arg_conv.c_ty == "void":
938 # We actually want to handle this case, but for now its only used in NetGraphMsgHandler::new()
939 # which ends up resulting in a redundant constructor - both without arguments for the NetworkGraph.
942 if not arg_conv_info.arg_name in default_constructor_args:
943 default_constructor_args[arg_conv_info.arg_name] = []
944 default_constructor_args[arg_conv_info.arg_name].append(explode_arg_conv)
945 arg_names.append(arg_conv_info)
947 out_java_struct = None
948 if ("LDK" + struct_meth in opaque_structs or "LDK" + struct_meth in trait_structs) and not is_free:
949 out_java_struct = open(sys.argv[3] + "/structs/" + struct_meth + ".java", "a")
951 out_java_struct.write("\t// Skipped " + re_match.group(2) + "\n")
952 out_java_struct.close()
953 out_java_struct = None
955 meth_n = re_match.group(2)[len(struct_meth) + 1:]
957 out_java_struct.write("\tpublic static " + ret_info.java_hu_ty + " constructor_" + meth_n + "(")
959 out_java_struct.write("\tpublic " + ret_info.java_hu_ty + " " + meth_n + "(")
960 for idx, arg in enumerate(arg_names):
962 if not takes_self or idx > 1:
963 out_java_struct.write(", ")
966 if arg.java_ty != "void":
967 if arg.arg_name in default_constructor_args:
968 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
970 out_java_struct.write(", ")
971 out_java_struct.write(explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name)
973 out_java_struct.write(arg.java_hu_ty + " " + arg.arg_name)
976 out_java.write(");\n")
978 if out_java_struct is not None:
979 out_java_struct.write(") {\n")
981 for info in arg_names:
982 if info.arg_conv is not None:
983 write_c("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
985 if ret_info.ret_conv is not None:
986 write_c("\t" + ret_conv_pfx.replace('\n', '\n\t'))
987 elif ret_info.c_ty != "void":
988 write_c("\t" + ret_info.c_ty + " ret_val = ")
992 if c_call_string is None:
993 write_c(re_match.group(2) + "(")
995 write_c(c_call_string)
996 for idx, info in enumerate(arg_names):
997 if info.arg_conv_name is not None:
1000 elif c_call_string is not None:
1002 write_c(info.arg_conv_name)
1004 if ret_info.ret_conv is not None:
1005 write_c(ret_conv_sfx.replace('\n', '\n\t'))
1008 for info in arg_names:
1009 if info.arg_conv_cleanup is not None:
1010 write_c("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
1011 if ret_info.ret_conv is not None:
1012 write_c("\n\treturn " + ret_info.ret_conv_name + ";")
1013 elif ret_info.c_ty != "void":
1014 write_c("\n\treturn ret_val;")
1016 if out_java_struct is not None:
1017 out_java_struct.write("\t\t")
1018 if ret_info.java_ty != "void":
1019 out_java_struct.write(ret_info.java_ty + " ret = ")
1020 out_java_struct.write("bindings." + re_match.group(2) + "(")
1021 for idx, info in enumerate(arg_names):
1023 out_java_struct.write(", ")
1024 if idx == 0 and takes_self:
1025 out_java_struct.write("this.ptr")
1026 elif info.arg_name in default_constructor_args:
1027 out_java_struct.write("bindings." + info.java_hu_ty + "_new(")
1028 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
1029 if explode_idx != 0:
1030 out_java_struct.write(", ")
1031 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1032 if explode_arg.from_hu_conv is not None:
1033 out_java_struct.write(explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
1035 out_java_struct.write(expl_arg_name)
1036 out_java_struct.write(")")
1037 elif info.from_hu_conv is not None:
1038 out_java_struct.write(info.from_hu_conv[0])
1040 out_java_struct.write(info.arg_name)
1041 out_java_struct.write(");\n")
1042 if ret_info.to_hu_conv is not None:
1044 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")
1046 out_java_struct.write("\t\t" + ret_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
1048 for idx, info in enumerate(arg_names):
1049 if idx == 0 and takes_self:
1051 elif info.arg_name in default_constructor_args:
1052 for explode_arg in default_constructor_args[info.arg_name]:
1053 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1054 if explode_arg.from_hu_conv is not None and ret_info.to_hu_conv_name:
1055 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")
1056 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
1057 if not takes_self and ret_info.to_hu_conv_name is not None:
1058 out_java_struct.write("\t\t" + info.from_hu_conv[1].replace("this", ret_info.to_hu_conv_name) + ";\n")
1060 out_java_struct.write("\t\t" + info.from_hu_conv[1] + ";\n")
1062 if ret_info.to_hu_conv_name is not None:
1063 out_java_struct.write("\t\treturn " + ret_info.to_hu_conv_name + ";\n")
1064 elif ret_info.java_ty != "void" and ret_info.rust_obj != "LDK" + struct_meth:
1065 out_java_struct.write("\t\treturn ret;\n")
1066 out_java_struct.write("\t}\n\n")
1067 out_java_struct.close()
1069 def map_unitary_enum(struct_name, field_lines):
1070 with open(sys.argv[3] + "/enums/" + struct_name + ".java", "w") as out_java_enum:
1071 out_java_enum.write("package org.ldk.enums;\n\n")
1072 unitary_enums.add(struct_name)
1073 write_c("static inline " + struct_name + " " + struct_name + "_from_java(JNIEnv *env, jclass val) {\n")
1074 write_c("\tswitch ((*env)->CallIntMethod(env, val, ordinal_meth)) {\n")
1076 for idx, struct_line in enumerate(field_lines):
1078 out_java_enum.write("public enum " + struct_name + " {\n")
1079 elif idx == len(field_lines) - 3:
1080 assert(struct_line.endswith("_Sentinel,"))
1081 elif idx == len(field_lines) - 2:
1082 out_java_enum.write("\t; static native void init();\n")
1083 out_java_enum.write("\tstatic { init(); }\n")
1084 out_java_enum.write("}")
1085 out_java.write("\tstatic { " + struct_name + ".values(); /* Force enum statics to run */ }\n")
1086 elif idx == len(field_lines) - 1:
1087 assert(struct_line == "")
1089 out_java_enum.write(struct_line + "\n")
1090 write_c("\t\tcase %d: return %s;\n" % (ord_v, struct_line.strip().strip(",")))
1093 write_c("\tabort();\n")
1097 write_c("static jclass " + struct_name + "_class = NULL;\n")
1098 for idx, struct_line in enumerate(field_lines):
1099 if idx > 0 and idx < len(field_lines) - 3:
1100 variant = struct_line.strip().strip(",")
1101 write_c("static jfieldID " + struct_name + "_" + variant + " = NULL;\n")
1102 write_c("JNIEXPORT void JNICALL Java_org_ldk_enums_" + struct_name.replace("_", "_1") + "_init (JNIEnv * env, jclass clz) {\n")
1103 write_c("\t" + struct_name + "_class = (*env)->NewGlobalRef(env, clz);\n")
1104 write_c("\tCHECK(" + struct_name + "_class != NULL);\n")
1105 for idx, struct_line in enumerate(field_lines):
1106 if idx > 0 and idx < len(field_lines) - 3:
1107 variant = struct_line.strip().strip(",")
1108 write_c("\t" + struct_name + "_" + variant + " = (*env)->GetStaticFieldID(env, " + struct_name + "_class, \"" + variant + "\", \"Lorg/ldk/enums/" + struct_name + ";\");\n")
1109 write_c("\tCHECK(" + struct_name + "_" + variant + " != NULL);\n")
1111 write_c("static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\n")
1112 write_c("\tswitch (val) {\n")
1113 for idx, struct_line in enumerate(field_lines):
1114 if idx > 0 and idx < len(field_lines) - 3:
1115 variant = struct_line.strip().strip(",")
1116 write_c("\t\tcase " + variant + ":\n")
1117 write_c("\t\t\treturn (*env)->GetStaticObjectField(env, " + struct_name + "_class, " + struct_name + "_" + variant + ");\n")
1119 write_c("\t\tdefault: abort();\n")
1123 def map_complex_enum(struct_name, union_enum_items):
1124 java_hu_type = struct_name.replace("LDK", "")
1125 complex_enums.add(struct_name)
1126 with open(sys.argv[3] + "/structs/" + java_hu_type + ".java", "w") as out_java_enum:
1127 out_java_enum.write(hu_struct_file_prefix)
1128 out_java_enum.write("public class " + java_hu_type + " extends CommonBase {\n")
1129 out_java_enum.write("\tprivate " + java_hu_type + "(Object _dummy, long ptr) { super(ptr); }\n")
1130 out_java_enum.write("\t@Override @SuppressWarnings(\"deprecation\")\n")
1131 out_java_enum.write("\tprotected void finalize() throws Throwable {\n")
1132 out_java_enum.write("\t\tsuper.finalize();\n")
1133 out_java_enum.write("\t\tif (ptr != 0) { bindings." + java_hu_type + "_free(ptr); }\n")
1134 out_java_enum.write("\t}\n")
1135 out_java_enum.write("\tstatic " + java_hu_type + " constr_from_ptr(long ptr) {\n")
1136 out_java_enum.write("\t\tbindings." + struct_name + " raw_val = bindings." + struct_name + "_ref_from_ptr(ptr);\n")
1137 java_hu_subclasses = ""
1139 tag_field_lines = union_enum_items["field_lines"]
1140 init_meth_jty_strs = {}
1141 for idx, struct_line in enumerate(tag_field_lines):
1143 out_java.write("\tpublic static class " + struct_name + " {\n")
1144 out_java.write("\t\tprivate " + struct_name + "() {}\n")
1145 elif idx == len(tag_field_lines) - 3:
1146 assert(struct_line.endswith("_Sentinel,"))
1147 elif idx == len(tag_field_lines) - 2:
1148 out_java.write("\t\tstatic native void init();\n")
1149 out_java.write("\t}\n")
1150 elif idx == len(tag_field_lines) - 1:
1151 assert(struct_line == "")
1153 var_name = struct_line.strip(' ,')[len(struct_name) + 1:]
1154 out_java.write("\t\tpublic final static class " + var_name + " extends " + struct_name + " {\n")
1155 java_hu_subclasses = java_hu_subclasses + "\tpublic final static class " + var_name + " extends " + java_hu_type + " {\n"
1156 out_java_enum.write("\t\tif (raw_val.getClass() == bindings." + struct_name + "." + var_name + ".class) {\n")
1157 out_java_enum.write("\t\t\treturn new " + var_name + "(ptr, (bindings." + struct_name + "." + var_name + ")raw_val);\n")
1158 write_c("static jclass " + struct_name + "_" + var_name + "_class = NULL;\n")
1159 write_c("static jmethodID " + struct_name + "_" + var_name + "_meth = NULL;\n")
1160 init_meth_jty_str = ""
1161 init_meth_params = ""
1164 if "LDK" + var_name in union_enum_items:
1165 enum_var_lines = union_enum_items["LDK" + var_name]
1166 for idx, field in enumerate(enum_var_lines):
1167 if idx != 0 and idx < len(enum_var_lines) - 2:
1168 field_ty = map_type(field.strip(' ;'), False, None, False, True)
1169 out_java.write("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.arg_name + ";\n")
1170 java_hu_subclasses = java_hu_subclasses + "\t\tpublic final " + field_ty.java_hu_ty + " " + field_ty.arg_name + ";\n"
1171 if field_ty.to_hu_conv is not None:
1172 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.java_ty + " " + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
1173 hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
1174 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
1176 hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
1177 init_meth_jty_str = init_meth_jty_str + field_ty.java_fn_ty_arg
1179 init_meth_params = init_meth_params + ", "
1180 init_meth_params = init_meth_params + field_ty.java_ty + " " + field_ty.arg_name
1181 init_meth_body = init_meth_body + "this." + field_ty.arg_name + " = " + field_ty.arg_name + "; "
1182 out_java.write("\t\t\t" + var_name + "(" + init_meth_params + ") { ")
1183 out_java.write(init_meth_body)
1184 out_java.write("}\n")
1185 out_java.write("\t\t}\n")
1186 out_java_enum.write("\t\t}\n")
1187 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"
1188 java_hu_subclasses = java_hu_subclasses + hu_conv_body
1189 java_hu_subclasses = java_hu_subclasses + "\t\t}\n\t}\n"
1190 init_meth_jty_strs[var_name] = init_meth_jty_str
1191 out_java_enum.write("\t\tassert false; return null; // Unreachable without extending the (internal) bindings interface\n\t}\n\n")
1192 out_java_enum.write(java_hu_subclasses)
1193 out_java.write("\tstatic { " + struct_name + ".init(); }\n")
1194 out_java.write("\tpublic static native " + struct_name + " " + struct_name + "_ref_from_ptr(long ptr);\n");
1196 write_c("JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024" + struct_name.replace("_", "_1") + "_init (JNIEnv * env, jclass _a) {\n")
1197 for idx, struct_line in enumerate(tag_field_lines):
1198 if idx != 0 and idx < len(tag_field_lines) - 3:
1199 var_name = struct_line.strip(' ,')[len(struct_name) + 1:]
1200 write_c("\t" + struct_name + "_" + var_name + "_class =\n")
1201 write_c("\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + struct_name + "$" + var_name + ";\"));\n")
1202 write_c("\tCHECK(" + struct_name + "_" + var_name + "_class != NULL);\n")
1203 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")
1204 write_c("\tCHECK(" + struct_name + "_" + var_name + "_meth != NULL);\n")
1206 write_c("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {\n")
1207 write_c("\t" + struct_name + " *obj = (" + struct_name + "*)ptr;\n")
1208 write_c("\tswitch(obj->tag) {\n")
1209 for idx, struct_line in enumerate(tag_field_lines):
1210 if idx != 0 and idx < len(tag_field_lines) - 3:
1211 var_name = struct_line.strip(' ,')[len(struct_name) + 1:]
1212 write_c("\t\tcase " + struct_name + "_" + var_name + ": {\n")
1214 if "LDK" + var_name in union_enum_items:
1215 enum_var_lines = union_enum_items["LDK" + var_name]
1216 for idx, field in enumerate(enum_var_lines):
1217 if idx != 0 and idx < len(enum_var_lines) - 2:
1218 field_map = map_type(field.strip(' ;'), False, None, False, True)
1219 if field_map.ret_conv is not None:
1220 write_c("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
1221 write_c("obj->" + camel_to_snake(var_name) + "." + field_map.arg_name)
1222 write_c(field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
1223 c_params_text = c_params_text + ", " + field_map.ret_conv_name
1225 c_params_text = c_params_text + ", obj->" + camel_to_snake(var_name) + "." + field_map.arg_name
1226 write_c("\t\t\treturn (*_env)->NewObject(_env, " + struct_name + "_" + var_name + "_class, " + struct_name + "_" + var_name + "_meth" + c_params_text + ");\n")
1228 write_c("\t\tdefault: abort();\n")
1230 out_java_enum.write("}\n")
1232 def map_trait(struct_name, field_var_lines, trait_fn_lines):
1233 with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "w") as out_java_trait:
1234 write_c("typedef struct " + struct_name + "_JCalls {\n")
1235 write_c("\tatomic_size_t refcnt;\n")
1236 write_c("\tJavaVM *vm;\n")
1237 write_c("\tjweak o;\n")
1238 field_var_convs = []
1239 for var_line in field_var_lines:
1240 if var_line.group(1) in trait_structs:
1241 write_c("\t" + var_line.group(1) + "_JCalls* " + var_line.group(2) + ";\n")
1242 field_var_convs.append(None)
1244 field_var_convs.append(map_type(var_line.group(1) + " " + var_line.group(2), False, None, False, False))
1245 for fn_line in trait_fn_lines:
1246 if fn_line.group(3) != "free" and fn_line.group(3) != "clone":
1247 write_c("\tjmethodID " + fn_line.group(3) + "_meth;\n")
1248 write_c("} " + struct_name + "_JCalls;\n")
1250 out_java_trait.write(hu_struct_file_prefix)
1251 out_java_trait.write("public class " + struct_name.replace("LDK","") + " extends CommonBase {\n")
1252 out_java_trait.write("\tfinal bindings." + struct_name + " bindings_instance;\n")
1253 out_java_trait.write("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }\n")
1254 out_java_trait.write("\tprivate " + struct_name.replace("LDK", "") + "(bindings." + struct_name + " arg")
1255 for idx, var_line in enumerate(field_var_lines):
1256 if var_line.group(1) in trait_structs:
1257 out_java_trait.write(", bindings." + var_line.group(1) + " " + var_line.group(2))
1259 out_java_trait.write(", " + field_var_convs[idx].java_hu_ty + " " + var_line.group(2))
1260 out_java_trait.write(") {\n")
1261 out_java_trait.write("\t\tsuper(bindings." + struct_name + "_new(arg")
1262 for idx, var_line in enumerate(field_var_lines):
1263 if var_line.group(1) in trait_structs:
1264 out_java_trait.write(", " + var_line.group(2))
1265 elif field_var_convs[idx].from_hu_conv is not None:
1266 out_java_trait.write(", " + field_var_convs[idx].from_hu_conv[0])
1268 out_java_trait.write(", " + var_line.group(2))
1269 out_java_trait.write("));\n")
1270 out_java_trait.write("\t\tthis.ptrs_to.add(arg);\n")
1271 for idx, var_line in enumerate(field_var_lines):
1272 if var_line.group(1) in trait_structs:
1273 out_java_trait.write("\t\tthis.ptrs_to.add(" + var_line.group(2) + ");\n")
1274 elif field_var_convs[idx].from_hu_conv is not None and field_var_convs[idx].from_hu_conv[1] != "":
1275 out_java_trait.write("\t\t" + field_var_convs[idx].from_hu_conv[1] + ";\n")
1276 out_java_trait.write("\t\tthis.bindings_instance = arg;\n")
1277 out_java_trait.write("\t}\n")
1278 out_java_trait.write("\t@Override @SuppressWarnings(\"deprecation\")\n")
1279 out_java_trait.write("\tprotected void finalize() throws Throwable {\n")
1280 out_java_trait.write("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); } super.finalize();\n")
1281 out_java_trait.write("\t}\n\n")
1283 java_trait_constr = "\tprivate static class " + struct_name + "Holder { " + struct_name.replace("LDK", "") + " held; }\n"
1284 java_trait_constr = java_trait_constr + "\tpublic static " + struct_name.replace("LDK", "") + " new_impl(" + struct_name.replace("LDK", "") + "Interface arg"
1285 for idx, var_line in enumerate(field_var_lines):
1286 if var_line.group(1) in trait_structs:
1287 # Ideally we'd be able to take any instance of the interface, but our C code can only represent
1288 # Java-implemented version, so we require users pass a Java implementation here :/
1289 java_trait_constr = java_trait_constr + ", " + var_line.group(1).replace("LDK", "") + "." + var_line.group(1).replace("LDK", "") + "Interface " + var_line.group(2) + "_impl"
1291 java_trait_constr = java_trait_constr + ", " + field_var_convs[idx].java_hu_ty + " " + var_line.group(2)
1292 java_trait_constr = java_trait_constr + ") {\n\t\tfinal " + struct_name + "Holder impl_holder = new " + struct_name + "Holder();\n"
1293 java_trait_constr = java_trait_constr + "\t\timpl_holder.held = new " + struct_name.replace("LDK", "") + "(new bindings." + struct_name + "() {\n"
1294 out_java_trait.write("\tpublic static interface " + struct_name.replace("LDK", "") + "Interface {\n")
1295 out_java.write("\tpublic interface " + struct_name + " {\n")
1297 for fn_line in trait_fn_lines:
1298 java_meth_descr = "("
1299 if fn_line.group(3) != "free" and fn_line.group(3) != "clone":
1300 ret_ty_info = map_type(fn_line.group(2), True, None, False, False)
1302 out_java.write("\t\t " + ret_ty_info.java_ty + " " + fn_line.group(3) + "(")
1303 java_trait_constr = java_trait_constr + "\t\t\t@Override public " + ret_ty_info.java_ty + " " + fn_line.group(3) + "("
1304 out_java_trait.write("\t\t" + ret_ty_info.java_hu_ty + " " + fn_line.group(3) + "(")
1305 is_const = fn_line.group(4) is not None
1306 write_c(fn_line.group(2) + fn_line.group(3) + "_jcall(")
1308 write_c("const void* this_arg")
1310 write_c("void* this_arg")
1313 for idx, arg in enumerate(fn_line.group(5).split(',')):
1317 out_java.write(", ")
1318 java_trait_constr = java_trait_constr + ", "
1319 out_java_trait.write(", ")
1321 arg_conv_info = map_type(arg, True, None, False, False)
1322 write_c(arg.strip())
1323 out_java.write(arg_conv_info.java_ty + " " + arg_conv_info.arg_name)
1324 out_java_trait.write(arg_conv_info.java_hu_ty + " " + arg_conv_info.arg_name)
1325 java_trait_constr = java_trait_constr + arg_conv_info.java_ty + " " + arg_conv_info.arg_name
1326 arg_names.append(arg_conv_info)
1327 java_meth_descr = java_meth_descr + arg_conv_info.java_fn_ty_arg
1328 java_meth_descr = java_meth_descr + ")" + ret_ty_info.java_fn_ty_arg
1329 java_meths.append((fn_line, java_meth_descr))
1331 out_java.write(");\n")
1332 out_java_trait.write(");\n")
1333 java_trait_constr = java_trait_constr + ") {\n"
1335 write_c("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n")
1336 write_c("\tJNIEnv *_env;\n")
1337 write_c("\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);\n")
1339 for arg_info in arg_names:
1340 if arg_info.ret_conv is not None:
1341 write_c("\t" + arg_info.ret_conv[0].replace('\n', '\n\t'));
1342 write_c(arg_info.arg_name)
1343 write_c(arg_info.ret_conv[1].replace('\n', '\n\t') + "\n")
1344 if arg_info.to_hu_conv is not None:
1345 java_trait_constr = java_trait_constr + "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
1347 write_c("\tjobject obj = (*_env)->NewLocalRef(_env, j_calls->o);\n\tCHECK(obj != NULL);\n")
1348 if ret_ty_info.c_ty.endswith("Array"):
1349 write_c("\t" + ret_ty_info.c_ty + " arg = (*_env)->CallObjectMethod(_env, obj, j_calls->" + fn_line.group(3) + "_meth")
1350 elif not ret_ty_info.passed_as_ptr:
1351 write_c("\treturn (*_env)->Call" + ret_ty_info.java_ty.title() + "Method(_env, obj, j_calls->" + fn_line.group(3) + "_meth")
1353 write_c("\t" + fn_line.group(2).strip() + "* ret = (" + fn_line.group(2).strip() + "*)(*_env)->CallLongMethod(_env, obj, j_calls->" + fn_line.group(3) + "_meth");
1354 if ret_ty_info.java_ty != "void":
1355 java_trait_constr = java_trait_constr + "\t\t\t\t" + ret_ty_info.java_hu_ty + " ret = arg." + fn_line.group(3) + "("
1357 java_trait_constr = java_trait_constr + "\t\t\t\targ." + fn_line.group(3) + "("
1359 for idx, arg_info in enumerate(arg_names):
1360 if arg_info.ret_conv is not None:
1361 write_c(", " + arg_info.ret_conv_name)
1363 write_c(", " + arg_info.arg_name)
1365 java_trait_constr = java_trait_constr + ", "
1366 if arg_info.to_hu_conv_name is not None:
1367 java_trait_constr = java_trait_constr + arg_info.to_hu_conv_name
1369 java_trait_constr = java_trait_constr + arg_info.arg_name
1371 if ret_ty_info.arg_conv is not None:
1372 write_c("\t" + ret_ty_info.arg_conv.replace("\n", "\n\t") + "\n\treturn " + ret_ty_info.arg_conv_name + ";\n")
1375 java_trait_constr = java_trait_constr + ");\n"
1376 if ret_ty_info.java_ty != "void":
1377 if ret_ty_info.from_hu_conv is not None:
1378 java_trait_constr = java_trait_constr + "\t\t\t\t" + ret_ty_info.java_ty + " result = " + ret_ty_info.from_hu_conv[0] + ";\n"
1379 if ret_ty_info.from_hu_conv[1] != "":
1380 java_trait_constr = java_trait_constr + "\t\t\t\t" + ret_ty_info.from_hu_conv[1].replace("this", "impl_holder.held") + ";\n"
1381 if ret_ty_info.rust_obj in result_types:
1382 # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead
1383 java_trait_constr = java_trait_constr + "\t\t\t\tret.ptr = 0;\n"
1384 java_trait_constr = java_trait_constr + "\t\t\t\treturn result;\n"
1386 java_trait_constr = java_trait_constr + "\t\t\t\treturn ret;\n"
1387 java_trait_constr = java_trait_constr + "\t\t\t}\n"
1388 elif fn_line.group(3) == "free":
1389 write_c("static void " + struct_name + "_JCalls_free(void* this_arg) {\n")
1390 write_c("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n")
1391 write_c("\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n")
1392 write_c("\t\tJNIEnv *env;\n")
1393 write_c("\t\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);\n")
1394 write_c("\t\t(*env)->DeleteWeakGlobalRef(env, j_calls->o);\n")
1395 write_c("\t\tFREE(j_calls);\n")
1397 java_trait_constr = java_trait_constr + "\t\t}"
1398 for var_line in field_var_lines:
1399 if var_line.group(1) in trait_structs:
1400 java_trait_constr = java_trait_constr + ", " + var_line.group(2) + ".new_impl(" + var_line.group(2) + "_impl).bindings_instance"
1402 java_trait_constr = java_trait_constr + ", " + var_line.group(2)
1403 out_java_trait.write("\t}\n")
1404 out_java_trait.write(java_trait_constr + ");\n\t\treturn impl_holder.held;\n\t}\n")
1406 # Write out a clone function whether we need one or not, as we use them in moving to rust
1407 write_c("static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n")
1408 write_c("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n")
1409 write_c("\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n")
1410 for var_line in field_var_lines:
1411 if var_line.group(1) in trait_structs:
1412 write_c("\tatomic_fetch_add_explicit(&j_calls->" + var_line.group(2) + "->refcnt, 1, memory_order_release);\n")
1413 write_c("\treturn (void*) this_arg;\n")
1416 out_java.write("\t}\n")
1418 out_java.write("\tpublic static native long " + struct_name + "_new(" + struct_name + " impl")
1419 write_c("static inline " + struct_name + " " + struct_name + "_init (JNIEnv * env, jclass _a, jobject o")
1420 for idx, var_line in enumerate(field_var_lines):
1421 if var_line.group(1) in trait_structs:
1422 out_java.write(", " + var_line.group(1) + " " + var_line.group(2))
1423 write_c(", jobject " + var_line.group(2))
1425 out_java.write(", " + field_var_convs[idx].java_ty + " " + var_line.group(2))
1426 write_c(", " + field_var_convs[idx].c_ty + " " + var_line.group(2))
1427 out_java.write(");\n")
1430 write_c("\tjclass c = (*env)->GetObjectClass(env, o);\n")
1431 write_c("\tCHECK(c != NULL);\n")
1432 write_c("\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n")
1433 write_c("\tatomic_init(&calls->refcnt, 1);\n")
1434 write_c("\tDO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);\n")
1435 write_c("\tcalls->o = (*env)->NewWeakGlobalRef(env, o);\n")
1436 for (fn_line, java_meth_descr) in java_meths:
1437 if fn_line.group(3) != "free" and fn_line.group(3) != "clone":
1438 write_c("\tcalls->" + fn_line.group(3) + "_meth = (*env)->GetMethodID(env, c, \"" + fn_line.group(3) + "\", \"" + java_meth_descr + "\");\n")
1439 write_c("\tCHECK(calls->" + fn_line.group(3) + "_meth != NULL);\n")
1440 for idx, var_line in enumerate(field_var_lines):
1441 if field_var_convs[idx] is not None and field_var_convs[idx].arg_conv is not None:
1442 write_c("\n\t" + field_var_convs[idx].arg_conv.replace("\n", "\n\t") +"\n")
1443 write_c("\n\t" + struct_name + " ret = {\n")
1444 write_c("\t\t.this_arg = (void*) calls,\n")
1445 for fn_line in trait_fn_lines:
1446 if fn_line.group(3) != "free" and fn_line.group(3) != "clone":
1447 write_c("\t\t." + fn_line.group(3) + " = " + fn_line.group(3) + "_jcall,\n")
1448 elif fn_line.group(3) == "free":
1449 write_c("\t\t.free = " + struct_name + "_JCalls_free,\n")
1451 write_c("\t\t.clone = " + struct_name + "_JCalls_clone,\n")
1452 for idx, var_line in enumerate(field_var_lines):
1453 if var_line.group(1) in trait_structs:
1454 write_c("\t\t." + var_line.group(2) + " = " + var_line.group(1) + "_init(env, _a, " + var_line.group(2) + "),\n")
1455 elif field_var_convs[idx].arg_conv_name is not None:
1456 write_c("\t\t." + var_line.group(2) + " = " + field_var_convs[idx].arg_conv_name + ",\n")
1457 write_c("\t\t.set_" + var_line.group(2) + " = NULL,\n")
1459 write_c("\t\t." + var_line.group(2) + " = " + var_line.group(2) + ",\n")
1460 write_c("\t\t.set_" + var_line.group(2) + " = NULL,\n")
1462 for var_line in field_var_lines:
1463 if var_line.group(1) in trait_structs:
1464 write_c("\tcalls->" + var_line.group(2) + " = ret." + var_line.group(2) + ".this_arg;\n")
1465 write_c("\treturn ret;\n")
1468 write_c("JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new (JNIEnv * env, jclass _a, jobject o")
1469 for idx, var_line in enumerate(field_var_lines):
1470 if var_line.group(1) in trait_structs:
1471 write_c(", jobject " + var_line.group(2))
1473 write_c(", " + field_var_convs[idx].c_ty + " " + var_line.group(2))
1475 write_c("\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n")
1476 write_c("\t*res_ptr = " + struct_name + "_init(env, _a, o")
1477 for var_line in field_var_lines:
1478 write_c(", " + var_line.group(2))
1480 write_c("\treturn (long)res_ptr;\n")
1483 out_java.write("\tpublic static native " + struct_name + " " + struct_name + "_get_obj_from_jcalls(long val);\n")
1484 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")
1485 write_c("\tjobject ret = (*env)->NewLocalRef(env, ((" + struct_name + "_JCalls*)val)->o);\n")
1486 write_c("\tCHECK(ret != NULL);\n")
1487 write_c("\treturn ret;\n")
1490 for fn_line in trait_fn_lines:
1491 # For now, just disable enabling the _call_log - we don't know how to inverse-map String
1492 is_log = fn_line.group(3) == "log" and struct_name == "LDKLogger"
1493 if fn_line.group(3) != "free" and fn_line.group(3) != "clone" and fn_line.group(3) != "eq" and not is_log:
1494 dummy_line = fn_line.group(2) + struct_name.replace("LDK", "") + "_" + fn_line.group(3) + " " + struct_name + "* this_arg" + fn_line.group(5) + "\n"
1495 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(3) + ")(this_arg_conv->this_arg")
1496 for idx, var_line in enumerate(field_var_lines):
1497 if var_line.group(1) not in trait_structs:
1498 write_c(var_line.group(1) + " " + struct_name + "_set_get_" + var_line.group(2) + "(" + struct_name + "* this_arg) {\n")
1499 write_c("\tif (this_arg->set_" + var_line.group(2) + " != NULL)\n")
1500 write_c("\t\tthis_arg->set_" + var_line.group(2) + "(this_arg);\n")
1501 write_c("\treturn this_arg->" + var_line.group(2) + ";\n")
1503 dummy_line = var_line.group(1) + " " + struct_name.replace("LDK", "") + "_get_" + var_line.group(2) + " " + struct_name + "* this_arg" + fn_line.group(5) + "\n"
1504 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")
1506 def map_result(struct_name, res_ty, err_ty):
1507 result_types.add(struct_name)
1508 human_ty = struct_name.replace("LDKCResult", "Result")
1509 with open(sys.argv[3] + "/structs/" + human_ty + ".java", "w") as out_java_struct:
1510 out_java_struct.write(hu_struct_file_prefix)
1511 out_java_struct.write("public class " + human_ty + " extends CommonBase {\n")
1512 out_java_struct.write("\tprivate " + human_ty + "(Object _dummy, long ptr) { super(ptr); }\n")
1513 out_java_struct.write("\tprotected void finalize() throws Throwable {\n")
1514 out_java_struct.write("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); } super.finalize();\n")
1515 out_java_struct.write("\t}\n\n")
1516 out_java_struct.write("\tstatic " + human_ty + " constr_from_ptr(long ptr) {\n")
1517 out_java_struct.write("\t\tif (bindings." + struct_name + "_result_ok(ptr)) {\n")
1518 out_java_struct.write("\t\t\treturn new " + human_ty + "_OK(null, ptr);\n")
1519 out_java_struct.write("\t\t} else {\n")
1520 out_java_struct.write("\t\t\treturn new " + human_ty + "_Err(null, ptr);\n")
1521 out_java_struct.write("\t\t}\n")
1522 out_java_struct.write("\t}\n")
1524 res_map = map_type(res_ty + " res", True, None, False, True)
1525 err_map = map_type(err_ty + " err", True, None, False, True)
1527 if not res_map.is_native_primitive and (res_map.rust_obj.replace("LDK", "") + "_clone" not in clone_fns):
1529 if not err_map.is_native_primitive and (err_map.rust_obj.replace("LDK", "") + "_clone" not in clone_fns):
1532 out_java.write("\tpublic static native boolean " + struct_name + "_result_ok(long arg);\n")
1533 write_c("JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {\n")
1534 write_c("\treturn ((" + struct_name + "*)arg)->result_ok;\n")
1537 out_java.write("\tpublic static native " + res_map.java_ty + " " + struct_name + "_get_ok(long arg);\n")
1538 write_c("JNIEXPORT " + res_map.c_ty + " JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {\n")
1539 write_c("\t" + struct_name + " *val = (" + struct_name + "*)arg;\n")
1540 write_c("\tCHECK(val->result_ok);\n\t")
1541 out_java_struct.write("\tpublic static final class " + human_ty + "_OK extends " + human_ty + " {\n")
1542 if res_map.ret_conv is not None:
1543 write_c(res_map.ret_conv[0].replace("\n", "\n\t") + "(*val->contents.result)")
1544 write_c(res_map.ret_conv[1].replace("\n", "\n\t") + "\n\treturn " + res_map.ret_conv_name)
1546 write_c("return *val->contents.result")
1549 if res_map.java_hu_ty != "void":
1550 out_java_struct.write("\t\tpublic final " + res_map.java_hu_ty + " res;\n")
1551 out_java_struct.write("\t\tprivate " + human_ty + "_OK(Object _dummy, long ptr) {\n")
1552 out_java_struct.write("\t\t\tsuper(_dummy, ptr);\n")
1553 if res_map.java_hu_ty == "void":
1555 elif res_map.to_hu_conv is not None:
1556 out_java_struct.write("\t\t\t" + res_map.java_ty + " res = bindings." + struct_name + "_get_ok(ptr);\n")
1557 out_java_struct.write("\t\t\t" + res_map.to_hu_conv.replace("\n", "\n\t\t\t"))
1558 out_java_struct.write("\n\t\t\tthis.res = " + res_map.to_hu_conv_name + ";\n")
1560 out_java_struct.write("\t\t\tthis.res = bindings." + struct_name + "_get_ok(ptr);\n")
1561 out_java_struct.write("\t\t}\n")
1562 if struct_name.startswith("LDKCResult_None"):
1563 out_java_struct.write("\t\tpublic " + human_ty + "_OK() {\n\t\t\tthis(null, bindings.C" + human_ty + "_ok());\n")
1565 out_java_struct.write("\t\tpublic " + human_ty + "_OK(" + res_map.java_hu_ty + " res) {\n")
1566 if res_map.from_hu_conv is not None:
1567 out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_ok(" + res_map.from_hu_conv[0] + "));\n")
1568 if res_map.from_hu_conv[1] != "":
1569 out_java_struct.write("\t\t\t" + res_map.from_hu_conv[1] + ";\n")
1571 out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_ok(res));\n")
1572 out_java_struct.write("\t\t}\n\t}\n\n")
1574 out_java.write("\tpublic static native " + err_map.java_ty + " " + struct_name + "_get_err(long arg);\n")
1575 write_c("JNIEXPORT " + err_map.c_ty + " JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {\n")
1576 write_c("\t" + struct_name + " *val = (" + struct_name + "*)arg;\n")
1577 write_c("\tCHECK(!val->result_ok);\n\t")
1578 out_java_struct.write("\tpublic static final class " + human_ty + "_Err extends " + human_ty + " {\n")
1579 if err_map.ret_conv is not None:
1580 write_c(err_map.ret_conv[0].replace("\n", "\n\t") + "(*val->contents.err)")
1581 write_c(err_map.ret_conv[1].replace("\n", "\n\t") + "\n\treturn " + err_map.ret_conv_name)
1583 write_c("return *val->contents.err")
1586 if err_map.java_hu_ty != "void":
1587 out_java_struct.write("\t\tpublic final " + err_map.java_hu_ty + " err;\n")
1588 out_java_struct.write("\t\tprivate " + human_ty + "_Err(Object _dummy, long ptr) {\n")
1589 out_java_struct.write("\t\t\tsuper(_dummy, ptr);\n")
1590 if err_map.java_hu_ty == "void":
1592 elif err_map.to_hu_conv is not None:
1593 out_java_struct.write("\t\t\t" + err_map.java_ty + " err = bindings." + struct_name + "_get_err(ptr);\n")
1594 out_java_struct.write("\t\t\t" + err_map.to_hu_conv.replace("\n", "\n\t\t\t"))
1595 out_java_struct.write("\n\t\t\tthis.err = " + err_map.to_hu_conv_name + ";\n")
1597 out_java_struct.write("\t\t\tthis.err = bindings." + struct_name + "_get_err(ptr);\n")
1598 out_java_struct.write("\t\t}\n")
1600 if struct_name.endswith("NoneZ"):
1601 out_java_struct.write("\t\tpublic " + human_ty + "_Err() {\n\t\t\tthis(null, bindings.C" + human_ty + "_err());\n")
1603 out_java_struct.write("\t\tpublic " + human_ty + "_Err(" + err_map.java_hu_ty + " err) {\n")
1604 if err_map.from_hu_conv is not None:
1605 out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_err(" + err_map.from_hu_conv[0] + "));\n")
1606 if err_map.from_hu_conv[1] != "":
1607 out_java_struct.write("\t\t\t" + err_map.from_hu_conv[1] + ";\n")
1609 out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_err(err));\n")
1610 out_java_struct.write("\t\t}\n\t}\n}\n")
1613 clone_fns.add(struct_name.replace("LDK", "") + "_clone")
1614 write_c("static inline " + struct_name + " " + struct_name.replace("LDK", "") + "_clone(const " + struct_name + " *orig) {\n")
1615 write_c("\t" + struct_name + " res = { .result_ok = orig->result_ok };\n")
1616 write_c("\tif (orig->result_ok) {\n")
1617 if res_map.c_ty == "void":
1618 write_c("\t\tres.contents.result = NULL;\n")
1620 if res_map.is_native_primitive:
1621 write_c("\t\t" + res_map.c_ty + "* contents = MALLOC(sizeof(" + res_map.c_ty + "), \"" + res_map.c_ty + " result OK clone\");\n")
1622 write_c("\t\t*contents = *orig->contents.result;\n")
1624 write_c("\t\t" + res_map.rust_obj + "* contents = MALLOC(sizeof(" + res_map.rust_obj + "), \"" + res_map.rust_obj + " result OK clone\");\n")
1625 write_c("\t\t*contents = " + res_map.rust_obj.replace("LDK", "") + "_clone(orig->contents.result);\n")
1626 write_c("\t\tres.contents.result = contents;\n")
1627 write_c("\t} else {\n")
1628 if err_map.c_ty == "void":
1629 write_c("\t\tres.contents.err = NULL;\n")
1631 if err_map.is_native_primitive:
1632 write_c("\t\t" + err_map.c_ty + "* contents = MALLOC(sizeof(" + err_map.c_ty + "), \"" + err_map.c_ty + " result Err clone\");\n")
1633 write_c("\t\t*contents = *orig->contents.err;\n")
1635 write_c("\t\t" + err_map.rust_obj + "* contents = MALLOC(sizeof(" + err_map.rust_obj + "), \"" + err_map.rust_obj + " result Err clone\");\n")
1636 write_c("\t\t*contents = " + err_map.rust_obj.replace("LDK", "") + "_clone(orig->contents.err);\n")
1637 write_c("\t\tres.contents.err = contents;\n")
1638 write_c("\t}\n\treturn res;\n}\n")
1640 def map_tuple(struct_name, field_lines):
1641 out_java.write("\tpublic static native long " + struct_name + "_new(")
1642 write_c("JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new(JNIEnv *_env, jclass _b")
1644 for idx, line in enumerate(field_lines):
1645 if idx != 0 and idx < len(field_lines) - 2:
1646 ty_info = java_c_types(line.strip(';'), None)
1648 out_java.write(", ")
1649 e = chr(ord('a') + idx - 1)
1650 out_java.write(ty_info.java_ty + " " + e)
1651 write_c(", " + ty_info.c_ty + " " + e)
1652 ty_list.append(ty_info)
1653 tuple_types[struct_name] = (ty_list, struct_name)
1654 out_java.write(");\n")
1656 write_c("\t" + struct_name + "* ret = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n")
1658 clone_str = "static inline " + struct_name + " " + struct_name.replace("LDK", "") + "_clone(const " + struct_name + " *orig) {\n"
1659 clone_str = clone_str + "\t" + struct_name + " ret = {\n"
1660 for idx, line in enumerate(field_lines):
1661 if idx != 0 and idx < len(field_lines) - 2:
1662 ty_info = map_type(line.strip(';'), False, None, False, False)
1663 e = chr(ord('a') + idx - 1)
1664 if ty_info.arg_conv is not None:
1665 write_c("\t" + ty_info.arg_conv.replace("\n", "\n\t"))
1666 write_c("\n\tret->" + e + " = " + ty_info.arg_conv_name + ";\n")
1668 write_c("\tret->" + e + " = " + e + ";\n")
1669 if ty_info.arg_conv_cleanup is not None:
1670 write_c("\t//TODO: Really need to call " + ty_info.arg_conv_cleanup + " here\n")
1671 if not ty_info.is_native_primitive and (ty_info.rust_obj.replace("LDK", "") + "_clone") not in clone_fns:
1673 elif can_clone and ty_info.is_native_primitive:
1674 clone_str = clone_str + "\t\t." + chr(ord('a') + idx - 1) + " = orig->" + chr(ord('a') + idx - 1) + ",\n"
1676 clone_str = clone_str + "\t\t." + chr(ord('a') + idx - 1) + " = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&orig->" + chr(ord('a') + idx - 1) + "),\n"
1677 write_c("\treturn (long)ret;\n")
1681 clone_fns.add(struct_name.replace("LDK", "") + "_clone")
1683 write_c("\t};\n\treturn ret;\n}\n")
1685 for idx, ty_info in enumerate(ty_list):
1686 e = chr(ord('a') + idx)
1687 out_java.write("\tpublic static native " + ty_info.java_ty + " " + struct_name + "_get_" + e + "(long ptr);\n")
1688 write_c("JNIEXPORT " + ty_info.c_ty + " JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1get_1" + e + "(JNIEnv *_env, jclass _b, jlong ptr) {\n")
1689 write_c("\t" + struct_name + " *tuple = (" + struct_name + "*)ptr;\n")
1690 conv_info = map_type_with_info(ty_info, False, None, False, True)
1691 if conv_info.ret_conv is not None:
1692 write_c("\t" + conv_info.ret_conv[0].replace("\n", "\n\t") + "tuple->" + e + conv_info.ret_conv[1].replace("\n", "\n\t") + "\n")
1693 write_c("\treturn " + conv_info.ret_conv_name + ";\n")
1695 write_c("\treturn tuple->" + e + ";\n")
1698 out_java.write("""package org.ldk.impl;
1699 import org.ldk.enums.*;
1701 public class bindings {
1702 public static class VecOrSliceDef {
1703 public long dataptr;
1704 public long datalen;
1706 public VecOrSliceDef(long dataptr, long datalen, long stride) {
1707 this.dataptr = dataptr; this.datalen = datalen; this.stride = stride;
1711 System.loadLibrary(\"lightningjni\");
1712 init(java.lang.Enum.class, VecOrSliceDef.class);
1715 static native void init(java.lang.Class c, java.lang.Class slicedef);
1716 static native void init_class_cache();
1718 public static native boolean deref_bool(long ptr);
1719 public static native long deref_long(long ptr);
1720 public static native void free_heap_ptr(long ptr);
1721 public static native byte[] read_bytes(long ptr, long len);
1722 public static native byte[] get_u8_slice_bytes(long slice_ptr);
1723 public static native long bytes_to_u8_vec(byte[] bytes);
1724 public static native long new_txpointer_copy_data(byte[] txdata);
1725 public static native void txpointer_free(long ptr);
1726 public static native byte[] txpointer_get_buffer(long ptr);
1727 public static native long vec_slice_len(long vec);
1728 public static native long new_empty_slice_vec();
1732 static jmethodID ordinal_meth = NULL;
1733 static jmethodID slicedef_meth = NULL;
1734 static jclass slicedef_cls = NULL;
1735 JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class, jclass slicedef_class) {
1736 ordinal_meth = (*env)->GetMethodID(env, enum_class, "ordinal", "()I");
1737 CHECK(ordinal_meth != NULL);
1738 slicedef_meth = (*env)->GetMethodID(env, slicedef_class, "<init>", "(JJJ)V");
1739 CHECK(slicedef_meth != NULL);
1740 slicedef_cls = (*env)->NewGlobalRef(env, slicedef_class);
1741 CHECK(slicedef_cls != NULL);
1744 JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_deref_1bool (JNIEnv * env, jclass _a, jlong ptr) {
1745 return *((bool*)ptr);
1747 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_deref_1long (JNIEnv * env, jclass _a, jlong ptr) {
1748 return *((long*)ptr);
1750 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_free_1heap_1ptr (JNIEnv * env, jclass _a, jlong ptr) {
1753 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_read_1bytes (JNIEnv * _env, jclass _b, jlong ptr, jlong len) {
1754 jbyteArray ret_arr = (*_env)->NewByteArray(_env, len);
1755 (*_env)->SetByteArrayRegion(_env, ret_arr, 0, len, (unsigned char*)ptr);
1758 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes (JNIEnv * _env, jclass _b, jlong slice_ptr) {
1759 LDKu8slice *slice = (LDKu8slice*)slice_ptr;
1760 jbyteArray ret_arr = (*_env)->NewByteArray(_env, slice->datalen);
1761 (*_env)->SetByteArrayRegion(_env, ret_arr, 0, slice->datalen, slice->data);
1764 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_bytes_1to_1u8_1vec (JNIEnv * _env, jclass _b, jbyteArray bytes) {
1765 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8");
1766 vec->datalen = (*_env)->GetArrayLength(_env, bytes);
1767 vec->data = (uint8_t*)MALLOC(vec->datalen, "LDKCVec_u8Z Bytes");
1768 (*_env)->GetByteArrayRegion (_env, bytes, 0, vec->datalen, vec->data);
1771 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_txpointer_1get_1buffer (JNIEnv * env, jclass _b, jlong ptr) {
1772 LDKTransaction *txdata = (LDKTransaction*)ptr;
1774 slice.data = txdata->data;
1775 slice.datalen = txdata->datalen;
1776 return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (long)&slice);
1778 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data (JNIEnv * env, jclass _b, jbyteArray bytes) {
1779 LDKTransaction *txdata = (LDKTransaction*)MALLOC(sizeof(LDKTransaction), "LDKTransaction");
1780 txdata->datalen = (*env)->GetArrayLength(env, bytes);
1781 txdata->data = (uint8_t*)MALLOC(txdata->datalen, "Tx Data Bytes");
1782 txdata->data_is_owned = false;
1783 (*env)->GetByteArrayRegion (env, bytes, 0, txdata->datalen, txdata->data);
1784 return (long)txdata;
1786 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_txpointer_1free (JNIEnv * env, jclass _b, jlong ptr) {
1787 LDKTransaction *tx = (LDKTransaction*)ptr;
1788 tx->data_is_owned = true;
1789 Transaction_free(*tx);
1792 JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_vec_1slice_1len (JNIEnv * env, jclass _a, jlong ptr) {
1793 // Check offsets of a few Vec types are all consistent as we're meant to be generic across types
1794 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_SignatureZ, datalen), "Vec<*> needs to be mapped identically");
1795 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_MessageSendEventZ, datalen), "Vec<*> needs to be mapped identically");
1796 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_EventZ, datalen), "Vec<*> needs to be mapped identically");
1797 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_C2Tuple_usizeTransactionZZ, datalen), "Vec<*> needs to be mapped identically");
1798 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)ptr;
1799 return (long)vec->datalen;
1801 JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1empty_1slice_1vec (JNIEnv * _env, jclass _b) {
1802 // Check sizes of a few Vec types are all consistent as we're meant to be generic across types
1803 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_SignatureZ), "Vec<*> needs to be mapped identically");
1804 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_MessageSendEventZ), "Vec<*> needs to be mapped identically");
1805 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_EventZ), "Vec<*> needs to be mapped identically");
1806 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_C2Tuple_usizeTransactionZZ), "Vec<*> needs to be mapped identically");
1807 LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "Empty LDKCVec");
1813 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
1814 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
1815 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
1816 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
1820 with open(sys.argv[3] + "/structs/CommonBase.java", "a") as out_java_struct:
1821 out_java_struct.write("""package org.ldk.structs;
1822 import java.util.LinkedList;
1825 LinkedList<Object> ptrs_to = new LinkedList();
1826 protected CommonBase(long ptr) { this.ptr = ptr; }
1827 public long _test_only_get_ptr() { return this.ptr; }
1831 in_block_comment = False
1832 cur_block_obj = None
1834 const_val_regex = re.compile("^extern const ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$")
1836 line_indicates_result_regex = re.compile("^ union (LDKCResult_[A-Za-z_0-9]*Ptr) contents;$")
1837 line_indicates_vec_regex = re.compile("^ (struct |enum |union )?([A-Za-z_0-9]*) \*data;$")
1838 line_indicates_opaque_regex = re.compile("^ bool is_owned;$")
1839 line_indicates_trait_regex = re.compile("^ (struct |enum |union )?([A-Za-z_0-9]* \*?)\(\*([A-Za-z_0-9]*)\)\((const )?void \*this_arg(.*)\);$")
1840 assert(line_indicates_trait_regex.match(" uintptr_t (*send_data)(void *this_arg, LDKu8slice data, bool resume_read);"))
1841 assert(line_indicates_trait_regex.match(" struct LDKCVec_MessageSendEventZ (*get_and_clear_pending_msg_events)(const void *this_arg);"))
1842 assert(line_indicates_trait_regex.match(" void *(*clone)(const void *this_arg);"))
1843 assert(line_indicates_trait_regex.match(" struct LDKCVec_u8Z (*write)(const void *this_arg);"))
1844 line_field_var_regex = re.compile("^ struct ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$")
1845 assert(line_field_var_regex.match(" struct LDKMessageSendEventsProvider MessageSendEventsProvider;"))
1846 assert(line_field_var_regex.match(" struct LDKChannelPublicKeys pubkeys;"))
1847 struct_name_regex = re.compile("^typedef (struct|enum|union) (MUST_USE_STRUCT )?(LDK[A-Za-z_0-9]*) {$")
1848 assert(struct_name_regex.match("typedef struct LDKCVec_u8Z {"))
1849 assert(struct_name_regex.match("typedef enum LDKNetwork {"))
1851 union_enum_items = {}
1852 result_ptr_struct_items = {}
1854 if in_block_comment:
1855 if line.endswith("*/\n"):
1856 in_block_comment = False
1857 elif cur_block_obj is not None:
1858 cur_block_obj = cur_block_obj + line
1859 if line.startswith("} "):
1863 obj_lines = cur_block_obj.split("\n")
1865 result_contents = None
1866 is_unitary_enum = False
1867 is_union_enum = False
1871 field_var_lines = []
1873 for idx, struct_line in enumerate(obj_lines):
1874 if struct_line.strip().startswith("/*"):
1875 in_block_comment = True
1876 if in_block_comment:
1877 if struct_line.endswith("*/"):
1878 in_block_comment = False
1880 struct_name_match = struct_name_regex.match(struct_line)
1881 if struct_name_match is not None:
1882 struct_name = struct_name_match.group(3)
1883 if struct_name_match.group(1) == "enum":
1884 if not struct_name.endswith("_Tag"):
1885 is_unitary_enum = True
1887 is_union_enum = True
1888 elif struct_name_match.group(1) == "union":
1890 if line_indicates_opaque_regex.match(struct_line):
1892 result_match = line_indicates_result_regex.match(struct_line)
1893 if result_match is not None:
1894 result_contents = result_match.group(1)
1895 vec_ty_match = line_indicates_vec_regex.match(struct_line)
1896 if vec_ty_match is not None and struct_name.startswith("LDKCVec_"):
1897 vec_ty = vec_ty_match.group(2)
1898 elif struct_name.startswith("LDKC2Tuple_") or struct_name.startswith("LDKC3Tuple_"):
1900 trait_fn_match = line_indicates_trait_regex.match(struct_line)
1901 if trait_fn_match is not None:
1902 trait_fn_lines.append(trait_fn_match)
1903 field_var_match = line_field_var_regex.match(struct_line)
1904 if field_var_match is not None:
1905 field_var_lines.append(field_var_match)
1906 field_lines.append(struct_line)
1908 assert(struct_name is not None)
1909 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))
1910 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))
1911 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))
1912 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))
1913 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))
1914 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))
1915 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))
1918 opaque_structs.add(struct_name)
1919 with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "w") as out_java_struct:
1920 out_java_struct.write(hu_struct_file_prefix)
1921 out_java_struct.write("public class " + struct_name.replace("LDK","") + " extends CommonBase")
1922 if struct_name.startswith("LDKLocked"):
1923 out_java_struct.write(" implements AutoCloseable")
1924 out_java_struct.write(" {\n")
1925 out_java_struct.write("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); }\n")
1926 if struct_name.startswith("LDKLocked"):
1927 out_java_struct.write("\t@Override public void close() {\n")
1929 out_java_struct.write("\t@Override @SuppressWarnings(\"deprecation\")\n")
1930 out_java_struct.write("\tprotected void finalize() throws Throwable {\n")
1931 out_java_struct.write("\t\tsuper.finalize();\n")
1932 out_java_struct.write("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); }\n")
1933 out_java_struct.write("\t}\n\n")
1934 elif result_contents is not None:
1935 assert result_contents in result_ptr_struct_items
1936 res_ty, err_ty = result_ptr_struct_items[result_contents]
1937 map_result(struct_name, res_ty, err_ty)
1938 elif struct_name.startswith("LDKCResult_") and struct_name.endswith("ZPtr"):
1939 for line in field_lines:
1940 if line.endswith("*result;"):
1941 res_ty = line[:-8].strip()
1942 elif line.endswith("*err;"):
1943 err_ty = line[:-5].strip()
1944 result_ptr_struct_items[struct_name] = (res_ty, err_ty)
1945 result_types.add(struct_name[:-3])
1947 map_tuple(struct_name, field_lines)
1948 elif vec_ty is not None:
1949 if vec_ty in opaque_structs:
1950 out_java.write("\tpublic static native long[] " + struct_name + "_arr_info(long vec_ptr);\n")
1951 write_c("JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {\n")
1953 out_java.write("\tpublic static native VecOrSliceDef " + struct_name + "_arr_info(long vec_ptr);\n")
1954 write_c("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {\n")
1955 write_c("\t" + struct_name + " *vec = (" + struct_name + "*)ptr;\n")
1956 if vec_ty in opaque_structs:
1957 write_c("\tjlongArray ret = (*env)->NewLongArray(env, vec->datalen);\n")
1958 write_c("\tjlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);\n")
1959 write_c("\tfor (size_t i = 0; i < vec->datalen; i++) {\n")
1960 write_c("\t\tCHECK((((long)vec->data[i].inner) & 1) == 0);\n")
1961 write_c("\t\tret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);\n")
1963 write_c("\t(*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);\n")
1964 write_c("\treturn ret;\n")
1966 write_c("\treturn (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(" + vec_ty + "));\n")
1969 ty_info = map_type(vec_ty + " arr_elem", False, None, False, False)
1970 if len(ty_info.java_fn_ty_arg) == 1: # ie we're a primitive of some form
1971 out_java.write("\tpublic static native long " + struct_name + "_new(" + ty_info.java_ty + "[] elems);\n")
1972 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")
1973 write_c("\t" + struct_name + " *ret = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n")
1974 write_c("\tret->datalen = (*env)->GetArrayLength(env, elems);\n")
1975 write_c("\tif (ret->datalen == 0) {\n")
1976 write_c("\t\tret->data = NULL;\n")
1977 write_c("\t} else {\n")
1978 write_c("\t\tret->data = MALLOC(sizeof(" + vec_ty + ") * ret->datalen, \"" + struct_name + " Data\");\n")
1979 write_c("\t\t" + ty_info.c_ty + " *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);\n")
1980 write_c("\t\tfor (size_t i = 0; i < ret->datalen; i++) {\n")
1981 if ty_info.arg_conv is not None:
1982 write_c("\t\t\t" + ty_info.c_ty + " arr_elem = java_elems[i];\n")
1983 write_c("\t\t\t" + ty_info.arg_conv.replace("\n", "\n\t\t\t") + "\n")
1984 write_c("\t\t\tret->data[i] = " + ty_info.arg_conv_name + ";\n")
1985 assert ty_info.arg_conv_cleanup is None
1987 write_c("\t\t\tret->data[i] = java_elems[i];\n")
1989 write_c("\t\t(*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);\n")
1991 write_c("\treturn (long)ret;\n")
1994 if ty_info.is_native_primitive:
1995 clone_fns.add(struct_name.replace("LDK", "") + "_clone")
1996 write_c("static inline " + struct_name + " " + struct_name.replace("LDK", "") + "_clone(const " + struct_name + " *orig) {\n")
1997 write_c("\t" + struct_name + " ret = { .data = MALLOC(sizeof(" + ty_info.c_ty + ") * orig->datalen, \"" + struct_name + " clone bytes\"), .datalen = orig->datalen };\n")
1998 write_c("\tmemcpy(ret.data, orig->data, sizeof(" + ty_info.c_ty + ") * ret.datalen);\n")
1999 write_c("\treturn ret;\n}\n")
2000 elif (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns:
2001 ty_name = "CVec_" + ty_info.rust_obj.replace("LDK", "") + "Z";
2002 clone_fns.add(ty_name + "_clone")
2003 write_c("static inline " + struct_name + " " + ty_name + "_clone(const " + struct_name + " *orig) {\n")
2004 write_c("\t" + struct_name + " ret = { .data = MALLOC(sizeof(" + ty_info.rust_obj + ") * orig->datalen, \"" + struct_name + " clone bytes\"), .datalen = orig->datalen };\n")
2005 write_c("\tfor (size_t i = 0; i < ret.datalen; i++) {\n")
2006 write_c("\t\tret.data[i] = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&orig->data[i]);\n")
2007 write_c("\t}\n\treturn ret;\n}\n")
2009 assert(struct_name.endswith("_Tag"))
2010 struct_name = struct_name[:-4]
2011 union_enum_items[struct_name] = {"field_lines": field_lines}
2012 elif struct_name.endswith("_Body") and struct_name.split("_")[0] in union_enum_items:
2013 enum_var_name = struct_name.split("_")
2014 union_enum_items[enum_var_name[0]][enum_var_name[1]] = field_lines
2015 elif struct_name in union_enum_items:
2016 map_complex_enum(struct_name, union_enum_items[struct_name])
2017 elif is_unitary_enum:
2018 map_unitary_enum(struct_name, field_lines)
2019 elif len(trait_fn_lines) > 0:
2020 trait_structs.add(struct_name)
2021 map_trait(struct_name, field_var_lines, trait_fn_lines)
2022 elif struct_name == "LDKTxOut":
2023 with open(sys.argv[3] + "/structs/TxOut.java", "w") as out_java_struct:
2024 out_java_struct.write(hu_struct_file_prefix)
2025 out_java_struct.write("public class TxOut extends CommonBase{\n")
2026 out_java_struct.write("\tTxOut(java.lang.Object _dummy, long ptr) { super(ptr); }\n")
2027 out_java_struct.write("\tlong to_c_ptr() { return 0; }\n")
2028 out_java_struct.write("\t@Override @SuppressWarnings(\"deprecation\")\n")
2029 out_java_struct.write("\tprotected void finalize() throws Throwable {\n")
2030 out_java_struct.write("\t\tsuper.finalize();\n")
2031 out_java_struct.write("\t\tif (ptr != 0) { bindings.TxOut_free(ptr); }\n")
2032 out_java_struct.write("\t}\n")
2034 out_java_struct.write("}")
2036 pass # Everything remaining is a byte[] or some form
2037 cur_block_obj = None
2039 fn_ptr = fn_ptr_regex.match(line)
2040 fn_ret_arr = fn_ret_arr_regex.match(line)
2041 reg_fn = reg_fn_regex.match(line)
2042 const_val = const_val_regex.match(line)
2044 if line.startswith("#include <"):
2046 elif line.startswith("/*"):
2047 #out_java.write("\t" + line)
2048 if not line.endswith("*/\n"):
2049 in_block_comment = True
2050 elif line.startswith("typedef enum "):
2051 cur_block_obj = line
2052 elif line.startswith("typedef struct "):
2053 cur_block_obj = line
2054 elif line.startswith("typedef union "):
2055 cur_block_obj = line
2056 elif fn_ptr is not None:
2057 map_fn(line, fn_ptr, None, None)
2058 elif fn_ret_arr is not None:
2059 map_fn(line, fn_ret_arr, fn_ret_arr.group(4), None)
2060 elif reg_fn is not None:
2061 map_fn(line, reg_fn, None, None)
2062 elif const_val_regex is not None:
2063 # TODO Map const variables
2066 assert(line == "\n")
2068 out_java.write("}\n")
2069 for struct_name in opaque_structs:
2070 with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "a") as out_java_struct:
2071 out_java_struct.write("}\n")
2072 for struct_name in trait_structs:
2073 with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "a") as out_java_struct:
2074 out_java_struct.write("}\n")
2075 with open(sys.argv[4], "w") as out_c:
2076 out_c.write(c_file_pfx)
2077 for ty in c_array_class_caches:
2078 if ty + "_clz" in c_file:
2079 out_c.write("static jclass " + ty + "_clz = NULL;\n")
2080 out_c.write("JNIEXPORT void Java_org_ldk_impl_bindings_init_1class_1cache(JNIEnv * env, jclass _b) {\n")
2081 for ty in c_array_class_caches:
2082 if ty + "_clz" in c_file:
2083 out_c.write("\t" + ty + "_clz = (*env)->FindClass(env, \"" + ty.replace("arr_of_", "[") + "\");\n")
2084 out_c.write("\tCHECK(" + ty + "_clz != NULL);\n")
2085 out_c.write("\t" + ty + "_clz = (*env)->NewGlobalRef(env, " + ty + "_clz);\n")