1 from bindingstypes import ConvInfo
4 def first_to_lower(string: str) -> str:
6 return first.lower() + string[1:]
14 def __init__(self, DEBUG: bool, target: Target, **kwargs):
16 self.c_type_map = dict(
17 uint8_t = ['number', 'Uint8Array'],
18 uint16_t = ['number', 'Uint16Array'],
19 uint32_t = ['number', 'Uint32Array'],
20 uint64_t = ['number'],
23 self.wasm_decoding_map = dict(
24 int8_tArray = 'decodeUint8Array'
27 self.wasm_encoding_map = dict(
28 int8_tArray = 'encodeUint8Array',
31 self.to_hu_conv_templates = dict(
32 ptr = 'const {var_name}_hu_conv: {human_type} = new {human_type}(null, {var_name});',
33 default = 'const {var_name}_hu_conv: {human_type} = new {human_type}(null, {var_name});',
36 self.bindings_header = self.wasm_import_header(target) + """
37 export class VecOrSliceDef {
38 public dataptr: number;
39 public datalen: number;
40 public stride: number;
41 public constructor(dataptr: number, datalen: number, stride: number) {
42 this.dataptr = dataptr;
43 this.datalen = datalen;
51 System.loadLibrary(\"lightningjni\");
52 init(java.lang.Enum.class, VecOrSliceDef.class);
56 static native void init(java.lang.Class c, java.lang.Class slicedef);
57 static native void init_class_cache();
59 public static native boolean deref_bool(long ptr);
60 public static native long deref_long(long ptr);
61 public static native void free_heap_ptr(long ptr);
62 public static native byte[] read_bytes(long ptr, long len);
63 public static native byte[] get_u8_slice_bytes(long slice_ptr);
64 public static native long bytes_to_u8_vec(byte[] bytes);
65 public static native long new_txpointer_copy_data(byte[] txdata);
66 public static native void txpointer_free(long ptr);
67 public static native byte[] txpointer_get_buffer(long ptr);
68 public static native long vec_slice_len(long vec);
69 public static native long new_empty_slice_vec();
74 self.bindings_version_file = ""
76 self.bindings_footer = ""
81 self.common_base = """
82 export default class CommonBase {
84 ptrs_to: object[] = []; // new LinkedList(); TODO: build linked list implementation
85 protected constructor(ptr: number) { this.ptr = ptr; }
86 public _test_only_get_ptr(): number { return this.ptr; }
87 protected finalize() {
88 // TODO: finalize myself
93 self.c_file_pfx = """#include "js-wasm.h"
94 #include <stdatomic.h>
95 #include <lightning.h>
97 // These should be provided...somehow...
98 void *memset(void *s, int c, size_t n);
99 void *memcpy(void *dest, const void *src, size_t n);
100 int memcmp(const void *s1, const void *s2, size_t n);
102 void __attribute__((noreturn)) abort(void);
103 static inline void assert(bool expression) {
104 if (!expression) { abort(); }
109 self.c_file_pfx = self.c_file_pfx + """
110 void *malloc(size_t size);
111 void free(void *ptr);
113 #define MALLOC(a, _) malloc(a)
114 #define FREE(p) if ((unsigned long)(p) > 4096) { free(p); }
115 #define DO_ASSERT(a) (void)(a)
117 #define CHECK_ACCESS(p)
118 #define CHECK_INNER_FIELD_ACCESS_OR_NULL(v)
121 self.c_file_pfx = self.c_file_pfx + """
122 // Always run a, then assert it is true:
123 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
124 // Assert a is true or do nothing
125 #define CHECK(a) DO_ASSERT(a)
127 // Running a leak check across all the allocations and frees of the JDK is a mess,
128 // so instead we implement our own naive leak checker here, relying on the -wrap
129 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
130 // and free'd in Rust or C across the generated bindings shared library.
133 typedef struct allocation {
134 struct allocation* next;
136 const char* struct_name;
138 static allocation* allocation_ll = NULL;
140 void* __real_malloc(size_t len);
141 void* __real_calloc(size_t nmemb, size_t len);
142 static void new_allocation(void* res, const char* struct_name) {
143 allocation* new_alloc = __real_malloc(sizeof(allocation));
144 new_alloc->ptr = res;
145 new_alloc->struct_name = struct_name;
146 new_alloc->next = allocation_ll;
147 allocation_ll = new_alloc;
149 static void* MALLOC(size_t len, const char* struct_name) {
150 void* res = __real_malloc(len);
151 new_allocation(res, struct_name);
154 void __real_free(void* ptr);
155 static void alloc_freed(void* ptr) {
156 allocation* p = NULL;
157 allocation* it = allocation_ll;
158 while (it->ptr != ptr) {
159 p = it; it = it->next;
161 //XXX: fprintf(stderr, "Tried to free unknown pointer %p\\n", ptr);
162 return; // addrsan should catch malloc-unknown and print more info than we have
165 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
166 DO_ASSERT(it->ptr == ptr);
169 static void FREE(void* ptr) {
170 if ((unsigned long)ptr <= 4096) return; // Rust loves to create pointers to the NULL page for dummys
175 static void CHECK_ACCESS(const void* ptr) {
176 allocation* it = allocation_ll;
177 while (it->ptr != ptr) {
180 return; // addrsan should catch malloc-unknown and print more info than we have
184 #define CHECK_INNER_FIELD_ACCESS_OR_NULL(v) \\
185 if (v.is_owned && v.inner != NULL) { \\
186 const void *p = __unmangle_inner_ptr(v.inner); \\
192 void* __wrap_malloc(size_t len) {
193 void* res = __real_malloc(len);
194 new_allocation(res, "malloc call");
197 void* __wrap_calloc(size_t nmemb, size_t len) {
198 void* res = __real_calloc(nmemb, len);
199 new_allocation(res, "calloc call");
202 void __wrap_free(void* ptr) {
203 if (ptr == NULL) return;
208 void* __real_realloc(void* ptr, size_t newlen);
209 void* __wrap_realloc(void* ptr, size_t len) {
210 if (ptr != NULL) alloc_freed(ptr);
211 void* res = __real_realloc(ptr, len);
212 new_allocation(res, "realloc call");
215 void __wrap_reallocarray(void* ptr, size_t new_sz) {
216 // Rust doesn't seem to use reallocarray currently
220 void __attribute__((destructor)) check_leaks() {
221 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
222 //XXX: fprintf(stderr, "%s %p remains\\n", a->struct_name, a->ptr);
224 DO_ASSERT(allocation_ll == NULL);
227 self.c_file_pfx = self.c_file_pfx + """
228 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
229 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
230 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
231 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
233 _Static_assert(sizeof(void*) == 4, "Pointers mut be 32 bits");
235 #define DECL_ARR_TYPE(ty, name) \\
236 struct name##array { \\
240 typedef struct name##array * name##Array; \\
241 static inline name##Array init_##name##Array(size_t arr_len) { \\
242 name##Array arr = (name##Array)MALLOC(arr_len * sizeof(ty) + sizeof(uint32_t), "##name array init"); \\
243 arr->arr_len = arr_len; \\
247 DECL_ARR_TYPE(int64_t, int64_t);
248 DECL_ARR_TYPE(int8_t, int8_t);
249 DECL_ARR_TYPE(uint32_t, uint32_t);
250 DECL_ARR_TYPE(void*, ptr);
251 DECL_ARR_TYPE(char, char);
252 typedef charArray jstring;
254 static inline jstring str_ref_to_ts(const char* chars, size_t len) {
255 charArray arr = init_charArray(len);
256 memcpy(arr->elems, chars, len);
259 static inline LDKStr str_ref_to_owned_c(const jstring str) {
260 char* newchars = MALLOC(str->arr_len + 1, "String chars");
261 memcpy(newchars, str->elems, str->arr_len);
262 newchars[str->arr_len] = 0;
266 .chars_is_owned = true
271 typedef bool jboolean;
273 uint32_t __attribute__((visibility("default"))) TS_malloc(uint32_t size) {
274 return (uint32_t)MALLOC(size, "JS-Called malloc");
276 void __attribute__((visibility("default"))) TS_free(uint32_t ptr) {
281 self.c_version_file = ""
283 self.hu_struct_file_prefix = f"""
284 import CommonBase from './CommonBase';
285 import * as bindings from '../bindings.mjs'
288 self.c_fn_ty_pfx = ""
289 self.file_ext = ".mts"
290 self.ptr_c_ty = "uint32_t"
291 self.ptr_native_ty = "number"
292 self.result_c_ty = "uint32_t"
293 self.ptr_arr = "ptrArray"
294 self.is_arr_some_check = ("", " != 0")
295 self.get_native_arr_len_call = ("", "->arr_len")
297 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
299 def create_native_arr_call(self, arr_len, ty_info):
300 if ty_info.c_ty == "ptrArray":
301 assert ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array")
302 return "init_" + ty_info.c_ty + "(" + arr_len + ")"
303 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
304 if ty_info.c_ty == "int8_tArray":
305 return ("memcpy(" + arr_name + "->elems, ", ", " + arr_len + ")")
308 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
309 if ty_info.c_ty == "int8_tArray":
311 return "memcpy(" + dest_name + ", " + arr_name + "->elems, " + arr_len + ")"
312 if ty_info.c_ty == "ptrArray":
313 return "(void*) " + arr_name + "->elems"
316 return arr_name + "->elems"
317 def get_native_arr_elem(self, arr_name, idxc, ty_info):
318 assert False # Only called if above is None
319 def get_native_arr_ptr_call(self, ty_info):
320 if ty_info.subty is not None:
321 return "(" + ty_info.subty.c_ty + "*)(", " + 4)"
322 return "(" + ty_info.c_ty + "*)(", " + 4)"
323 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
325 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
326 if ty_info.c_ty == "int8_tArray":
331 def str_ref_to_native_call(self, var_name, str_len):
332 return "str_ref_to_ts(" + var_name + ", " + str_len + ")"
333 def str_ref_to_c_call(self, var_name):
334 return "str_ref_to_owned_c(" + var_name + ")"
336 def c_fn_name_define_pfx(self, fn_name, have_args):
337 return " __attribute__((visibility(\"default\"))) TS_" + fn_name + "("
339 def wasm_import_header(self, target):
341 function freer(f: () => void) { f() }
342 const finalizer = new FinalizationRegistry(freer);
343 const memory = new WebAssembly.Memory({initial: 256});
345 const imports: any = {};
348 imports.env.memoryBase = 0;
349 imports.env.memory = memory;
350 imports.env.tableBase = 0;
351 imports.env.table = new WebAssembly.Table({initial: 4, element: 'anyfunc'});
353 imports.env["abort"] = function () {
354 console.error("ABORT");
356 imports.env["js_invoke_function"] = function(fn: number, arg1: number, arg2: number, arg3: number, arg4: number, arg5: number, arg6: number, arg7: number, arg8: number, arg9: number, arg10: number) {
357 console.log('function called from wasm:', fn, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10);
359 imports.env["js_free_function_ptr"] = function(fn: number) {
360 console.log("function ptr free'd from wasm:", fn);
363 imports.wasi_snapshot_preview1 = {
365 console.log("ABORT");
367 "random_get" : () => {
368 console.log("RAND GET");
370 "environ_sizes_get" : () => {
371 console.log("wasi_snapshot_preview1:environ_sizes_get");
373 "proc_exit" : () => {
374 console.log("wasi_snapshot_preview1:proc_exit");
376 "environ_get" : () => {
377 console.log("wasi_snapshot_preview1:environ_get");
382 let isWasmInitialized: boolean = false;
385 if target == Target.NODEJS:
386 res += """import * as fs from 'fs';
387 export async function initializeWasm(path) {
388 const source = fs.readFileSync(path);
389 const { instance: wasmInstance } = await WebAssembly.instantiate(source, imports);
390 wasm = wasmInstance.exports;
391 isWasmInitialized = true;
396 export async function initializeWasm(uri) {
397 const stream = fetch(uri);
398 const { instance: wasmInstance } = await WebAssembly.instantiateStreaming(stream, imports);
399 wasm = wasmInstance.exports;
400 isWasmInitialized = true;
410 const nextMultipleOfFour = (value: number) => {
411 return Math.ceil(value / 4) * 4;
414 const encodeUint8Array = (inputArray) => {
415 const cArrayPointer = wasm.TS_malloc(inputArray.length + 4);
416 const arrayLengthView = new Uint32Array(memory.buffer, cArrayPointer, 1);
417 arrayLengthView[0] = inputArray.length;
418 const arrayMemoryView = new Uint8Array(memory.buffer, cArrayPointer + 4, inputArray.length);
419 arrayMemoryView.set(inputArray);
420 return cArrayPointer;
423 const encodeUint32Array = (inputArray) => {
424 const cArrayPointer = wasm.TS_malloc((inputArray.length + 1) * 4);
425 const arrayMemoryView = new Uint32Array(memory.buffer, cArrayPointer, inputArray.length);
426 arrayMemoryView.set(inputArray, 1);
427 arrayMemoryView[0] = inputArray.length;
428 return cArrayPointer;
431 const getArrayLength = (arrayPointer) => {
432 const arraySizeViewer = new Uint32Array(
433 memory.buffer, // value
434 arrayPointer, // offset
437 return arraySizeViewer[0];
439 const decodeUint8Array = (arrayPointer, free = true) => {
440 const arraySize = getArrayLength(arrayPointer);
441 const actualArrayViewer = new Uint8Array(
442 memory.buffer, // value
443 arrayPointer + 4, // offset (ignoring length bytes)
444 arraySize // uint8 count
446 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
447 // will free the underlying memory when it becomes unreachable instead of copying here.
448 const actualArray = actualArrayViewer.slice(0, arraySize);
450 wasm.TS_free(arrayPointer);
454 const decodeUint32Array = (arrayPointer, free = true) => {
455 const arraySize = getArrayLength(arrayPointer);
456 const actualArrayViewer = new Uint32Array(
457 memory.buffer, // value
458 arrayPointer + 4, // offset (ignoring length bytes)
459 arraySize // uint32 count
461 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
462 // will free the underlying memory when it becomes unreachable instead of copying here.
463 const actualArray = actualArrayViewer.slice(0, arraySize);
465 wasm.TS_free(arrayPointer);
470 const encodeString = (string) => {
471 // make malloc count divisible by 4
472 const memoryNeed = nextMultipleOfFour(string.length + 1);
473 const stringPointer = wasm.TS_malloc(memoryNeed);
474 const stringMemoryView = new Uint8Array(
475 memory.buffer, // value
476 stringPointer, // offset
477 string.length + 1 // length
479 for (let i = 0; i < string.length; i++) {
480 stringMemoryView[i] = string.charCodeAt(i);
482 stringMemoryView[string.length] = 0;
483 return stringPointer;
486 const decodeString = (stringPointer, free = true) => {
487 const memoryView = new Uint8Array(memory.buffer, stringPointer);
491 while (memoryView[cursor] !== 0) {
492 result += String.fromCharCode(memoryView[cursor]);
497 wasm.wasm_free(stringPointer);
507 def native_c_unitary_enum_map(self, struct_name, variants, enum_doc_comment):
508 out_c = "static inline LDK" + struct_name + " LDK" + struct_name + "_from_js(int32_t ord) {\n"
509 out_c = out_c + "\tswitch (ord) {\n"
512 out_typescript_enum_fields = ""
514 for var, var_docs in variants:
515 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
517 if var_docs is not None:
518 out_typescript_enum_fields += f"/**\n * {var_docs}\n */\n"
519 out_typescript_enum_fields += f"{var},\n\t\t\t\t"
520 out_c = out_c + "\t}\n"
521 out_c = out_c + "\tabort();\n"
522 out_c = out_c + "}\n"
524 out_c = out_c + "static inline int32_t LDK" + struct_name + "_to_js(LDK" + struct_name + " val) {\n"
525 out_c = out_c + "\tswitch (val) {\n"
527 for var, _ in variants:
528 out_c = out_c + "\t\tcase " + var + ": return %d;\n" % ord_v
530 out_c = out_c + "\t\tdefault: abort();\n"
531 out_c = out_c + "\t}\n"
532 out_c = out_c + "}\n"
534 out_typescript = f"""
535 export enum {struct_name} {{
536 {out_typescript_enum_fields}
539 out_typescript_enum = f"export {{ {struct_name} }} from \"../bindings.mjs\";"
540 return (out_c, out_typescript_enum, out_typescript)
542 def c_unitary_enum_to_native_call(self, ty_info):
543 return (ty_info.rust_obj + "_to_js(", ")")
544 def native_unitary_enum_to_c_call(self, ty_info):
545 return (ty_info.rust_obj + "_from_js(", ")")
547 def c_complex_enum_pass_ty(self, struct_name):
550 def c_constr_native_complex_enum(self, struct_name, variant, c_params):
551 ret = "0 /* " + struct_name + " - " + variant + " */"
552 for param in c_params:
553 ret = ret + "; (void) " + param
556 def native_c_map_trait(self, struct_name, field_var_conversions, flattened_field_var_conversions, field_function_lines, trait_doc_comment):
557 out_typescript_bindings = "\n\n\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: START\n\n"
559 constructor_arguments = ""
560 super_instantiator = ""
561 pointer_to_adder = ""
562 impl_constructor_arguments = ""
563 for var in flattened_field_var_conversions:
564 if isinstance(var, ConvInfo):
565 constructor_arguments += f", {first_to_lower(var.arg_name)}?: {var.java_hu_ty}"
566 impl_constructor_arguments += f", {var.arg_name}: {var.java_hu_ty}"
567 if var.from_hu_conv is not None:
568 super_instantiator += ", " + var.from_hu_conv[0]
569 if var.from_hu_conv[1] != "":
570 pointer_to_adder += var.from_hu_conv[1] + ";\n"
572 super_instantiator += ", " + first_to_lower(var.arg_name)
574 constructor_arguments += f", {first_to_lower(var[1])}?: bindings.{var[0]}"
575 super_instantiator += ", " + first_to_lower(var[1])
576 pointer_to_adder += "this.ptrs_to.push(" + first_to_lower(var[1]) + ");\n"
577 impl_constructor_arguments += f", {first_to_lower(var[1])}_impl: {var[0].replace('LDK', '')}.{var[0].replace('LDK', '')}Interface"
579 # BUILD INTERFACE METHODS
580 out_java_interface = ""
581 out_interface_implementation_overrides = ""
583 for fn_line in field_function_lines:
584 java_method_descriptor = ""
585 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
586 out_java_interface += fn_line.fn_name + "("
587 out_interface_implementation_overrides += f"{fn_line.fn_name} ("
589 for idx, arg_conv_info in enumerate(fn_line.args_ty):
591 out_java_interface += ", "
592 out_interface_implementation_overrides += ", "
593 out_java_interface += f"{arg_conv_info.arg_name}: {arg_conv_info.java_hu_ty}"
594 out_interface_implementation_overrides += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
595 java_method_descriptor += arg_conv_info.java_fn_ty_arg
596 out_java_interface += f"): {fn_line.ret_ty_info.java_hu_ty};\n\t\t\t\t"
597 java_method_descriptor += ")" + fn_line.ret_ty_info.java_fn_ty_arg
598 java_methods.append((fn_line.fn_name, java_method_descriptor))
600 out_interface_implementation_overrides += f"): {fn_line.ret_ty_info.java_ty} {{\n"
602 interface_method_override_inset = "\t\t\t\t\t\t"
603 interface_implementation_inset = "\t\t\t\t\t\t\t"
604 for arg_info in fn_line.args_ty:
605 if arg_info.to_hu_conv is not None:
606 out_interface_implementation_overrides += interface_implementation_inset + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
608 if fn_line.ret_ty_info.java_ty != "void":
609 out_interface_implementation_overrides += interface_implementation_inset + fn_line.ret_ty_info.java_hu_ty + " ret = arg." + fn_line.fn_name + "("
611 out_interface_implementation_overrides += f"{interface_implementation_inset}arg." + fn_line.fn_name + "("
613 for idx, arg_info in enumerate(fn_line.args_ty):
615 out_interface_implementation_overrides += ", "
616 if arg_info.to_hu_conv_name is not None:
617 out_interface_implementation_overrides += arg_info.to_hu_conv_name
619 out_interface_implementation_overrides += arg_info.arg_name
621 out_interface_implementation_overrides += ");\n"
622 if fn_line.ret_ty_info.java_ty != "void":
623 if fn_line.ret_ty_info.from_hu_conv is not None:
624 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\t" + f"result: {fn_line.ret_ty_info.java_ty} = " + fn_line.ret_ty_info.from_hu_conv[0] + ";\n"
625 if fn_line.ret_ty_info.from_hu_conv[1] != "":
626 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\t" + fn_line.ret_ty_info.from_hu_conv[1].replace("this", "impl_holder.held") + ";\n"
627 #if fn_line.ret_ty_info.rust_obj in result_types:
628 # XXX: We need to handle this in conversion logic so that its cross-language!
629 # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead
630 # out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\tret.ptr = 0;\n"
631 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\treturn result;\n"
633 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\treturn ret;\n"
634 out_interface_implementation_overrides += f"{interface_method_override_inset}}},\n\n{interface_method_override_inset}"
636 trait_constructor_arguments = ""
637 for var in field_var_conversions:
638 if isinstance(var, ConvInfo):
639 trait_constructor_arguments += ", " + var.arg_name
641 trait_constructor_arguments += ", " + var[1] + ".new_impl(" + var[1] + "_impl"
642 for suparg in var[2]:
643 if isinstance(suparg, ConvInfo):
644 trait_constructor_arguments += ", " + suparg.arg_name
646 trait_constructor_arguments += ", " + suparg[1]
647 trait_constructor_arguments += ").bindings_instance"
648 for suparg in var[2]:
649 if isinstance(suparg, ConvInfo):
650 trait_constructor_arguments += ", " + suparg.arg_name
652 trait_constructor_arguments += ", " + suparg[1]
654 out_typescript_human = f"""
655 {self.hu_struct_file_prefix}
657 export class {struct_name.replace("LDK","")} extends CommonBase {{
659 bindings_instance?: bindings.{struct_name};
661 constructor(ptr?: number, arg?: bindings.{struct_name}{constructor_arguments}) {{
662 if (Number.isFinite(ptr)) {{
664 this.bindings_instance = null;
666 // TODO: private constructor instantiation
667 super(bindings.{struct_name}_new(arg{super_instantiator}));
668 this.ptrs_to.push(arg);
673 protected finalize() {{
674 if (this.ptr != 0) {{
675 bindings.{struct_name.replace("LDK","")}_free(this.ptr);
680 static new_impl(arg: {struct_name.replace("LDK", "")}Interface{impl_constructor_arguments}): {struct_name.replace("LDK", "")} {{
681 const impl_holder: {struct_name}Holder = new {struct_name}Holder();
682 let structImplementation = <bindings.{struct_name}>{{
683 // todo: in-line interface filling
684 {out_interface_implementation_overrides}
686 impl_holder.held = new {struct_name.replace("LDK", "")} (null, structImplementation{trait_constructor_arguments});
690 export interface {struct_name.replace("LDK", "")}Interface {{
694 class {struct_name}Holder {{
695 held: {struct_name.replace("LDK", "")};
699 out_typescript_bindings += "\t\texport interface " + struct_name + " {\n"
701 for fn_line in field_function_lines:
702 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
703 out_typescript_bindings += f"\t\t\t{fn_line.fn_name} ("
705 for idx, arg_conv_info in enumerate(fn_line.args_ty):
707 out_typescript_bindings = out_typescript_bindings + ", "
708 out_typescript_bindings += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
710 out_typescript_bindings += f"): {fn_line.ret_ty_info.java_ty};\n"
712 out_typescript_bindings = out_typescript_bindings + "\t\t}\n\n"
714 out_typescript_bindings += f"\t\texport function {struct_name}_new(impl: {struct_name}"
715 for var in flattened_field_var_conversions:
716 if isinstance(var, ConvInfo):
717 out_typescript_bindings += f", {var.arg_name}: {var.java_ty}"
719 out_typescript_bindings += f", {var[1]}: {var[0]}"
721 out_typescript_bindings += f"""): number {{
722 throw new Error('unimplemented'); // TODO: bind to WASM
726 out_typescript_bindings += '\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: END\n\n\n'
728 # Now that we've written out our java code (and created java_meths), generate C
729 out_c = "typedef struct " + struct_name + "_JCalls {\n"
730 out_c = out_c + "\tatomic_size_t refcnt;\n"
731 for var in flattened_field_var_conversions:
732 if isinstance(var, ConvInfo):
733 # We're a regular ol' field
737 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
738 for fn in field_function_lines:
739 if fn.fn_name != "free" and fn.fn_name != "cloned":
740 out_c = out_c + "\tuint32_t " + fn.fn_name + "_meth;\n"
741 out_c = out_c + "} " + struct_name + "_JCalls;\n"
743 for fn_line in field_function_lines:
744 if fn_line.fn_name == "free":
745 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
746 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
747 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
748 for fn in field_function_lines:
749 if fn.fn_name != "free" and fn.fn_name != "cloned":
750 out_c = out_c + "\t\tjs_free_function_ptr(j_calls->" + fn.fn_name + "_meth);\n"
751 out_c = out_c + "\t\tFREE(j_calls);\n"
752 out_c = out_c + "\t}\n}\n"
754 for idx, fn_line in enumerate(field_function_lines):
755 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
756 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
757 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_" + struct_name + "_jcall("
758 if fn_line.self_is_const:
759 out_c = out_c + "const void* this_arg"
761 out_c = out_c + "void* this_arg"
763 for idx, arg in enumerate(fn_line.args_ty):
764 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
766 out_c = out_c + ") {\n"
767 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
769 for arg_info in fn_line.args_ty:
770 if arg_info.ret_conv is not None:
771 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
772 out_c = out_c + arg_info.arg_name
773 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
775 if fn_line.ret_ty_info.c_ty.endswith("Array"):
776 out_c += "\t" + fn_line.ret_ty_info.c_ty + " ret = (" + fn_line.ret_ty_info.c_ty + ")"
777 out_c += "js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
778 elif fn_line.ret_ty_info.java_ty == "void":
779 out_c = out_c + "\tjs_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
780 elif fn_line.ret_ty_info.java_ty == "String":
781 out_c = out_c + "\tjstring ret = (jstring)js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
782 elif not fn_line.ret_ty_info.passed_as_ptr:
783 out_c = out_c + "\treturn js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
785 out_c = out_c + "\tuint32_t ret = js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
787 for idx, arg_info in enumerate(fn_line.args_ty):
788 if arg_info.ret_conv is not None:
789 out_c = out_c + ", (uint32_t)" + arg_info.ret_conv_name
791 out_c = out_c + ", (uint32_t)" + arg_info.arg_name
792 out_c = out_c + ");\n"
793 if fn_line.ret_ty_info.arg_conv is not None:
794 out_c = out_c + "\t" + fn_line.ret_ty_info.arg_conv.replace("\n", "\n\t") + "\n\treturn " + fn_line.ret_ty_info.arg_conv_name + ";\n"
796 out_c = out_c + "}\n"
798 # Write out a clone function whether we need one or not, as we use them in moving to rust
799 out_c = out_c + "static void " + struct_name + "_JCalls_cloned(" + struct_name + "* new_obj) {\n"
800 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) new_obj->this_arg;\n"
801 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
802 for var in field_var_conversions:
803 if not isinstance(var, ConvInfo):
804 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
805 out_c = out_c + "}\n"
807 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (/*TODO: JS Object Reference */void* o"
808 for var in flattened_field_var_conversions:
809 if isinstance(var, ConvInfo):
810 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
812 out_c = out_c + ", /*TODO: JS Object Reference */void* " + var[1]
813 out_c = out_c + ") {\n"
815 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
816 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
817 out_c = out_c + "\t//TODO: Assign calls->o from o\n"
819 for (fn_name, java_meth_descr) in java_meths:
820 if fn_name != "free" and fn_name != "cloned":
821 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
822 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
824 for var in flattened_field_var_conversions:
825 if isinstance(var, ConvInfo) and var.arg_conv is not None:
826 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
827 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
828 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
829 for fn_line in field_function_lines:
830 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
831 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_" + struct_name + "_jcall,\n"
832 elif fn_line.fn_name == "free":
833 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
835 out_c = out_c + "\t\t.cloned = " + struct_name + "_JCalls_cloned,\n"
836 for var in field_var_conversions:
837 if isinstance(var, ConvInfo):
838 if var.arg_conv_name is not None:
839 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
840 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
842 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
843 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
845 out_c += "\t\t." + var[1] + " = " + var[0] + "_init(" + var[1]
846 for suparg in var[2]:
847 if isinstance(suparg, ConvInfo):
848 out_c += ", " + suparg.arg_name
850 out_c += ", " + suparg[1]
852 out_c = out_c + "\t};\n"
853 for var in flattened_field_var_conversions:
854 if not isinstance(var, ConvInfo):
855 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
856 out_c = out_c + "\treturn ret;\n"
857 out_c = out_c + "}\n"
859 out_c = out_c + self.c_fn_ty_pfx + "long " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "/*TODO: JS Object Reference */void* o"
860 for var in flattened_field_var_conversions:
861 if isinstance(var, ConvInfo):
862 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
864 out_c = out_c + ", /*TODO: JS Object Reference */ void* " + var[1]
865 out_c = out_c + ") {\n"
866 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
867 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(o"
868 for var in flattened_field_var_conversions:
869 if isinstance(var, ConvInfo):
870 out_c = out_c + ", " + var.arg_name
872 out_c = out_c + ", " + var[1]
873 out_c = out_c + ");\n"
874 out_c = out_c + "\treturn (long)res_ptr;\n"
875 out_c = out_c + "}\n"
877 return (out_typescript_bindings, out_typescript_human, out_c)
879 def trait_struct_inc_refcnt(self, ty_info):
882 def map_complex_enum(self, struct_name, variant_list, camel_to_snake, enum_doc_comment):
883 java_hu_type = struct_name.replace("LDK", "")
889 out_java_enum += (self.hu_struct_file_prefix)
890 out_java_enum += ("export default class " + java_hu_type + " extends CommonBase {\n")
891 out_java_enum += ("\tprotected constructor(_dummy: object, ptr: number) { super(ptr); }\n")
892 out_java_enum += ("\tprotected finalize() {\n")
893 out_java_enum += ("\t\tsuper.finalize();\n")
894 out_java_enum += ("\t\tif (this.ptr != 0) { bindings." + java_hu_type + "_free(this.ptr); }\n")
895 out_java_enum += ("\t}\n")
896 out_java_enum += f"\tstatic constr_from_ptr(ptr: number): {java_hu_type} {{\n"
897 out_java_enum += (f"\t\tconst raw_val: bindings.{struct_name} = bindings." + struct_name + "_ref_from_ptr(ptr);\n")
898 java_hu_subclasses = ""
900 out_java += "\texport class " + struct_name + " {\n"
901 out_java += "\t\tprotected constructor() {}\n"
903 for var in variant_list:
904 java_subclasses += "\texport class " + struct_name + "_" + var.var_name + " extends " + struct_name + " {\n"
905 java_hu_subclasses = java_hu_subclasses + "export class " + var.var_name + " extends " + java_hu_type + " {\n"
906 out_java_enum += ("\t\tif (raw_val instanceof bindings." + struct_name + "." + var.var_name + ") {\n")
907 out_java_enum += ("\t\t\treturn new " + var.var_name + "(this.ptr, raw_val);\n")
908 init_meth_params = ""
910 for idx, (field_ty, field_docs) in enumerate(var.fields):
911 java_hu_subclasses = java_hu_subclasses + "\tpublic " + field_ty.arg_name + f": {field_ty.java_hu_ty};\n"
912 if field_ty.to_hu_conv is not None:
913 hu_conv_body = hu_conv_body + "\t\tconst " + field_ty.arg_name + f": {field_ty.java_ty} = obj." + field_ty.arg_name + ";\n"
914 hu_conv_body = hu_conv_body + "\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
915 hu_conv_body = hu_conv_body + "\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
917 hu_conv_body = hu_conv_body + "\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
919 init_meth_params += ", "
920 init_meth_params += "public " + field_ty.arg_name + ": " + field_ty.java_ty
921 java_subclasses += "\t\tconstructor(" + init_meth_params + ") { super(); }\n"
922 java_subclasses += "\t}\n"
923 out_java_enum += ("\t\t}\n")
924 java_hu_subclasses = java_hu_subclasses + "\tprivate constructor(ptr: number, obj: bindings." + struct_name + "." + var.var_name + ") {\n\t\tsuper(null, ptr);\n"
925 java_hu_subclasses = java_hu_subclasses + hu_conv_body
926 java_hu_subclasses = java_hu_subclasses + "\t}\n}\n"
927 out_java += ("\t}\n")
928 out_java += java_subclasses
929 out_java_enum += ("\t\tthrow new Error('oops, this should be unreachable'); // Unreachable without extending the (internal) bindings interface\n\t}\n\n")
930 out_java += self.fn_call_body(struct_name + "_ref_from_ptr", "uint32_t", "number", "ptr: number", "ptr")
932 out_c += (self.c_fn_ty_pfx + self.c_complex_enum_pass_ty(struct_name) + self.c_fn_name_define_pfx(struct_name + "_ref_from_ptr", True) + self.ptr_c_ty + " ptr) {\n")
933 out_c += ("\t" + struct_name + " *obj = (" + struct_name + "*)(ptr & ~1);\n")
934 out_c += ("\tswitch(obj->tag) {\n")
935 for var in variant_list:
936 out_c += ("\t\tcase " + struct_name + "_" + var.var_name + ": {\n")
938 for idx, (field_map, _) in enumerate(var.fields):
939 if field_map.ret_conv is not None:
940 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
941 if var.tuple_variant:
942 out_c += "obj->" + camel_to_snake(var.var_name)
944 out_c += "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name
945 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
946 c_params.append(field_map.ret_conv_name)
948 if var.tuple_variant:
949 c_params.append("obj->" + camel_to_snake(var.var_name))
951 c_params.append("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
952 out_c += ("\t\t\treturn " + self.c_constr_native_complex_enum(struct_name, var.var_name, c_params) + ";\n")
954 out_c += ("\t\tdefault: abort();\n")
955 out_c += ("\t}\n}\n")
956 out_java_enum += ("}\n")
957 out_java_enum += (java_hu_subclasses)
958 return (out_java, out_java_enum, out_c)
960 def map_opaque_struct(self, struct_name, struct_doc_comment):
963 if struct_name.startswith("LDKLocked"):
964 implementations += "implements AutoCloseable "
970 protected finalize() {
974 out_opaque_struct_human = f"""
975 {self.hu_struct_file_prefix}
977 export default class {struct_name.replace("LDK","")} extends CommonBase {implementations}{{
978 constructor(_dummy: object, ptr: number) {{
983 if (this.ptr != 0) {{
984 bindings.{struct_name.replace("LDK","")}_free(this.ptr);
988 return out_opaque_struct_human
990 def map_tuple(self, struct_name):
991 return self.map_opaque_struct(struct_name, "A Tuple")
993 def fn_call_body(self, method_name, return_c_ty, return_java_ty, method_argument_string, native_call_argument_string):
994 has_return_value = return_c_ty != 'void'
995 needs_decoding = return_c_ty in self.wasm_decoding_map
996 return_statement = 'return nativeResponseValue;'
997 if not has_return_value:
998 return_statement = '// debug statements here'
1000 converter = self.wasm_decoding_map[return_c_ty]
1001 return_statement = f"return {converter}(nativeResponseValue);"
1003 return f"""\texport function {method_name}({method_argument_string}): {return_java_ty} {{
1004 if(!isWasmInitialized) {{
1005 throw new Error("initializeWasm() must be awaited first!");
1007 const nativeResponseValue = wasm.TS_{method_name}({native_call_argument_string});
1011 def map_function(self, argument_types, c_call_string, method_name, meth_n, return_type_info, struct_meth, default_constructor_args, takes_self, takes_self_as_ref, args_known, type_mapping_generator, doc_comment):
1014 out_java_struct = None
1017 out_c += (self.c_fn_ty_pfx)
1018 out_c += (return_type_info.c_ty)
1019 out_java += (return_type_info.java_ty)
1020 if return_type_info.ret_conv is not None:
1021 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
1022 out_java += (" " + method_name + "(")
1023 out_c += (" " + self.c_fn_name_define_pfx(method_name, True))
1025 method_argument_string = ""
1026 native_call_argument_string = ""
1027 for idx, arg_conv_info in enumerate(argument_types):
1029 method_argument_string += (", ")
1030 native_call_argument_string += ', '
1032 if arg_conv_info.c_ty != "void":
1033 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
1034 needs_encoding = arg_conv_info.c_ty in self.wasm_encoding_map
1035 native_argument = arg_conv_info.arg_name
1037 converter = self.wasm_encoding_map[arg_conv_info.c_ty]
1038 native_argument = f"{converter}({arg_conv_info.arg_name})"
1039 method_argument_string += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
1040 native_call_argument_string += native_argument
1041 out_java = self.fn_call_body(method_name, return_type_info.c_ty, return_type_info.java_ty, method_argument_string, native_call_argument_string)
1043 out_java_struct = ""
1045 out_java_struct += ("\t// Skipped " + method_name + "\n")
1048 out_java_struct += (
1049 "\tpublic static " + return_type_info.java_hu_ty + " constructor_" + meth_n + "(")
1051 out_java_struct += ("\tpublic " + return_type_info.java_hu_ty + " " + meth_n + "(")
1052 for idx, arg in enumerate(argument_types):
1054 if not takes_self or idx > 1:
1055 out_java_struct += (", ")
1058 if arg.java_ty != "void":
1059 if arg.arg_name in default_constructor_args:
1060 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
1061 if explode_idx != 0:
1062 out_java_struct += (", ")
1063 out_java_struct += (
1064 explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name)
1066 out_java_struct += (arg.java_hu_ty + " " + arg.arg_name)
1069 if out_java_struct is not None:
1070 out_java_struct += (") {\n")
1071 for info in argument_types:
1072 if info.arg_conv is not None:
1073 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
1074 if return_type_info.ret_conv is not None:
1075 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
1076 elif return_type_info.c_ty != "void":
1077 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
1080 if c_call_string is None:
1081 out_c += (method_name + "(")
1083 out_c += (c_call_string)
1084 for idx, info in enumerate(argument_types):
1085 if info.arg_conv_name is not None:
1088 elif c_call_string is not None:
1090 out_c += (info.arg_conv_name)
1092 if return_type_info.ret_conv is not None:
1093 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
1096 for info in argument_types:
1097 if info.arg_conv_cleanup is not None:
1098 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
1099 if return_type_info.ret_conv is not None:
1100 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
1101 elif return_type_info.c_ty != "void":
1102 out_c += ("\n\treturn ret_val;")
1103 out_c += ("\n}\n\n")
1106 out_java_struct += ("\t\t")
1107 if return_type_info.java_ty != "void":
1108 out_java_struct += (return_type_info.java_ty + " ret = ")
1109 out_java_struct += ("bindings." + method_name + "(")
1110 for idx, info in enumerate(argument_types):
1112 out_java_struct += (", ")
1113 if idx == 0 and takes_self:
1114 out_java_struct += ("this.ptr")
1115 elif info.arg_name in default_constructor_args:
1116 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
1117 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
1118 if explode_idx != 0:
1119 out_java_struct += (", ")
1120 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1121 if explode_arg.from_hu_conv is not None:
1122 out_java_struct += (
1123 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
1125 out_java_struct += (expl_arg_name)
1126 out_java_struct += (")")
1127 elif info.from_hu_conv is not None:
1128 out_java_struct += (info.from_hu_conv[0])
1130 out_java_struct += (info.arg_name)
1131 out_java_struct += (");\n")
1132 if return_type_info.to_hu_conv is not None:
1134 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
1135 return_type_info.to_hu_conv_name) + "\n")
1137 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
1139 for idx, info in enumerate(argument_types):
1140 if idx == 0 and takes_self:
1142 elif info.arg_name in default_constructor_args:
1143 for explode_arg in default_constructor_args[info.arg_name]:
1144 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1145 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
1146 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
1147 expl_arg_name).replace(
1148 "this", return_type_info.to_hu_conv_name) + ";\n")
1149 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
1150 if not takes_self and return_type_info.to_hu_conv_name is not None:
1151 out_java_struct += (
1152 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name).replace("\n", "\n\t\t") + ";\n")
1154 out_java_struct += ("\t\t" + info.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n")
1156 if return_type_info.to_hu_conv_name is not None:
1157 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
1158 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
1159 out_java_struct += ("\t\treturn ret;\n")
1160 out_java_struct += ("\t}\n\n")
1162 return (out_java, out_c, out_java_struct)