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, outdir: str, **kwargs):
16 self.struct_file_suffixes = {}
17 self.function_ptr_counter = 0
18 self.function_ptrs = {}
19 self.c_type_map = dict(
20 uint8_t = ['number', 'number', 'Uint8Array'],
21 uint16_t = ['number', 'number', 'Uint16Array'],
22 uint32_t = ['number', 'number', 'Uint32Array'],
23 uint64_t = ['bigint', 'bigint', 'BigUint64Array'],
25 self.java_type_map = dict(
28 self.java_hu_type_map = dict(
32 self.to_hu_conv_templates = dict(
33 ptr = 'const {var_name}_hu_conv: {human_type} = new {human_type}(null, {var_name});',
34 default = 'const {var_name}_hu_conv: {human_type} = new {human_type}(null, {var_name});',
37 self.bindings_header = self.wasm_import_header(target)
39 self.bindings_version_file = ""
41 self.bindings_footer = ""
43 self.common_base = """
44 function freer(f: () => void) { f() }
45 const finalizer = new FinalizationRegistry(freer);
46 function get_freeer(ptr: number, free_fn: (ptr: number) => void) {
52 export default class CommonBase {
53 protected ptr: number;
54 protected ptrs_to: object[] = [];
55 protected constructor(ptr: number, free_fn: (ptr: number) => void) {
57 if (Number.isFinite(ptr) && ptr != 0){
58 finalizer.register(this, get_freeer(ptr, free_fn));
61 // In Java, protected means "any subclass can access fields on any other subclass'"
62 // In TypeScript, protected means "any subclass can access parent fields on instances of itself"
63 // To work around this, we add accessors for other instances' protected fields here.
64 protected static add_ref_from(holder: CommonBase, referent: object) {
65 holder.ptrs_to.push(referent);
67 protected static get_ptr_of(o: CommonBase) {
70 protected static set_null_skip_free(o: CommonBase) {
72 finalizer.unregister(o);
77 self.txout_defn = """export class TxOut extends CommonBase {
78 /** The script_pubkey in this output */
79 public script_pubkey: Uint8Array;
80 /** The value, in satoshis, of this output */
84 public constructor(_dummy: object, ptr: number) {
85 super(ptr, bindings.TxOut_free);
86 this.script_pubkey = bindings.decodeUint8Array(bindings.TxOut_get_script_pubkey(ptr));
87 this.value = bindings.TxOut_get_value(ptr);
89 public constructor_new(value: bigint, script_pubkey: Uint8Array): TxOut {
90 return new TxOut(null, bindings.TxOut_new(bindings.encodeUint8Array(script_pubkey), value));
93 self.obj_defined(["TxOut"], "structs")
95 self.c_file_pfx = """#include "js-wasm.h"
96 #include <stdatomic.h>
97 #include <lightning.h>
99 // These should be provided...somehow...
100 void *memset(void *s, int c, size_t n);
101 void *memcpy(void *dest, const void *src, size_t n);
102 int memcmp(const void *s1, const void *s2, size_t n);
104 extern void __attribute__((noreturn)) abort(void);
105 static inline void assert(bool expression) {
106 if (!expression) { abort(); }
109 uint32_t __attribute__((export_name("test_bigint_pass_deadbeef0badf00d"))) test_bigint_pass_deadbeef0badf00d(uint64_t val) {
110 return val == 0xdeadbeef0badf00dULL;
116 self.c_file_pfx = self.c_file_pfx + """
117 void *malloc(size_t size);
118 void free(void *ptr);
120 #define MALLOC(a, _) malloc(a)
121 #define FREE(p) if ((unsigned long)(p) > 4096) { free(p); }
122 #define DO_ASSERT(a) (void)(a)
124 #define CHECK_ACCESS(p)
125 #define CHECK_INNER_FIELD_ACCESS_OR_NULL(v)
128 self.c_file_pfx = self.c_file_pfx + """
129 // Always run a, then assert it is true:
130 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
131 // Assert a is true or do nothing
132 #define CHECK(a) DO_ASSERT(a)
134 // Running a leak check across all the allocations and frees of the JDK is a mess,
135 // so instead we implement our own naive leak checker here, relying on the -wrap
136 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
137 // and free'd in Rust or C across the generated bindings shared library.
140 typedef struct allocation {
141 struct allocation* next;
143 const char* struct_name;
145 static allocation* allocation_ll = NULL;
147 void* __real_malloc(size_t len);
148 void* __real_calloc(size_t nmemb, size_t len);
149 static void new_allocation(void* res, const char* struct_name) {
150 allocation* new_alloc = __real_malloc(sizeof(allocation));
151 new_alloc->ptr = res;
152 new_alloc->struct_name = struct_name;
153 new_alloc->next = allocation_ll;
154 allocation_ll = new_alloc;
156 static void* MALLOC(size_t len, const char* struct_name) {
157 void* res = __real_malloc(len);
158 new_allocation(res, struct_name);
161 void __real_free(void* ptr);
162 static void alloc_freed(void* ptr) {
163 allocation* p = NULL;
164 allocation* it = allocation_ll;
165 while (it->ptr != ptr) {
166 p = it; it = it->next;
168 //XXX: fprintf(stderr, "Tried to free unknown pointer %p\\n", ptr);
169 return; // addrsan should catch malloc-unknown and print more info than we have
172 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
173 DO_ASSERT(it->ptr == ptr);
176 static void FREE(void* ptr) {
177 if ((unsigned long)ptr <= 4096) return; // Rust loves to create pointers to the NULL page for dummys
182 static void CHECK_ACCESS(const void* ptr) {
183 allocation* it = allocation_ll;
184 while (it->ptr != ptr) {
187 return; // addrsan should catch malloc-unknown and print more info than we have
191 #define CHECK_INNER_FIELD_ACCESS_OR_NULL(v) \\
192 if (v.is_owned && v.inner != NULL) { \\
193 const void *p = __unmangle_inner_ptr(v.inner); \\
199 void* __wrap_malloc(size_t len) {
200 void* res = __real_malloc(len);
201 new_allocation(res, "malloc call");
204 void* __wrap_calloc(size_t nmemb, size_t len) {
205 void* res = __real_calloc(nmemb, len);
206 new_allocation(res, "calloc call");
209 void __wrap_free(void* ptr) {
210 if (ptr == NULL) return;
215 void* __real_realloc(void* ptr, size_t newlen);
216 void* __wrap_realloc(void* ptr, size_t len) {
217 if (ptr != NULL) alloc_freed(ptr);
218 void* res = __real_realloc(ptr, len);
219 new_allocation(res, "realloc call");
222 void __wrap_reallocarray(void* ptr, size_t new_sz) {
223 // Rust doesn't seem to use reallocarray currently
227 void __attribute__((destructor)) check_leaks() {
228 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
229 //XXX: fprintf(stderr, "%s %p remains\\n", a->struct_name, a->ptr);
231 DO_ASSERT(allocation_ll == NULL);
234 self.c_file_pfx = self.c_file_pfx + """
235 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
236 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
237 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
238 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
240 _Static_assert(sizeof(void*) == 4, "Pointers mut be 32 bits");
242 #define DECL_ARR_TYPE(ty, name) \\
243 struct name##array { \\
247 typedef struct name##array * name##Array; \\
248 static inline name##Array init_##name##Array(size_t arr_len) { \\
249 name##Array arr = (name##Array)MALLOC(arr_len * sizeof(ty) + sizeof(uint32_t), "##name array init"); \\
250 arr->arr_len = arr_len; \\
254 DECL_ARR_TYPE(int64_t, int64_t);
255 DECL_ARR_TYPE(int8_t, int8_t);
256 DECL_ARR_TYPE(uint32_t, uint32_t);
257 DECL_ARR_TYPE(void*, ptr);
258 DECL_ARR_TYPE(char, char);
259 typedef charArray jstring;
261 static inline jstring str_ref_to_ts(const char* chars, size_t len) {
262 charArray arr = init_charArray(len);
263 memcpy(arr->elems, chars, len);
266 static inline LDKStr str_ref_to_owned_c(const jstring str) {
267 char* newchars = MALLOC(str->arr_len + 1, "String chars");
268 memcpy(newchars, str->elems, str->arr_len);
269 newchars[str->arr_len] = 0;
273 .chars_is_owned = true
278 typedef bool jboolean;
280 uint32_t __attribute__((export_name("TS_malloc"))) TS_malloc(uint32_t size) {
281 return (uint32_t)MALLOC(size, "JS-Called malloc");
283 void __attribute__((export_name("TS_free"))) TS_free(uint32_t ptr) {
288 self.c_version_file = ""
290 self.hu_struct_file_prefix = """
291 import CommonBase from './CommonBase.mjs';
292 import * as bindings from '../bindings.mjs'
293 import * as InternalUtils from '../InternalUtils.mjs'
296 self.util_fn_pfx = self.hu_struct_file_prefix + "\nexport class UtilMethods extends CommonBase {\n"
297 self.util_fn_sfx = "}"
298 self.c_fn_ty_pfx = ""
299 self.file_ext = ".mts"
300 self.ptr_c_ty = "uint32_t"
301 self.ptr_native_ty = "number"
302 self.result_c_ty = "uint32_t"
303 self.ptr_arr = "ptrArray"
304 self.is_arr_some_check = ("", " != 0")
305 self.get_native_arr_len_call = ("", "->arr_len")
307 with open(outdir + "/InternalUtils.mts", "w") as f:
308 f.write("export function check_arr_len(arr: Uint8Array, len: number): Uint8Array {\n")
309 f.write("\tif (arr.length != len) { throw new Error(\"Expected array of length \" + len + \"got \" + arr.length); }\n")
310 f.write("\treturn arr;\n")
313 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
315 def create_native_arr_call(self, arr_len, ty_info):
316 if ty_info.c_ty == "ptrArray":
317 assert ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array")
318 return "init_" + ty_info.c_ty + "(" + arr_len + ")"
319 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
320 if ty_info.c_ty == "int8_tArray":
321 return ("memcpy(" + arr_name + "->elems, ", ", " + arr_len + ")")
324 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
325 if ty_info.c_ty == "int8_tArray":
327 return "memcpy(" + dest_name + ", " + arr_name + "->elems, " + arr_len + ")"
328 if ty_info.c_ty == "ptrArray":
329 return "(void*) " + arr_name + "->elems"
332 return arr_name + "->elems"
333 def get_native_arr_elem(self, arr_name, idxc, ty_info):
334 assert False # Only called if above is None
335 def get_native_arr_ptr_call(self, ty_info):
336 if ty_info.subty is not None:
337 return "(" + ty_info.subty.c_ty + "*)(((uint8_t*)", ") + 4)"
338 return "(" + ty_info.c_ty + "*)(((uint8_t*)", ") + 4)"
339 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
341 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
342 if ty_info.c_ty == "int8_tArray":
347 def map_hu_array_elems(self, arr_name, conv_name, arr_ty, elem_ty):
348 assert elem_ty.c_ty == "uint32_t" or elem_ty.c_ty.endswith("Array")
349 return arr_name + " != null ? " + arr_name + ".map(" + conv_name + " => " + elem_ty.from_hu_conv[0] + ") : null"
351 def str_ref_to_native_call(self, var_name, str_len):
352 return "str_ref_to_ts(" + var_name + ", " + str_len + ")"
353 def str_ref_to_c_call(self, var_name):
354 return "str_ref_to_owned_c(" + var_name + ")"
355 def str_to_hu_conv(self, var_name):
356 return "const " + var_name + "_conv: string = bindings.decodeString(" + var_name + ");"
357 def str_from_hu_conv(self, var_name):
358 return ("bindings.encodeString(" + var_name + ")", "")
360 def c_fn_name_define_pfx(self, fn_name, have_args):
361 return " __attribute__((export_name(\"TS_" + fn_name + "\"))) TS_" + fn_name + "("
363 def wasm_import_header(self, target):
365 const imports: any = {};
368 var js_objs: Array<WeakRef<object>> = [];
369 var js_invoke: Function;
371 imports.wasi_snapshot_preview1 = {
372 "fd_write": (fd: number, iovec_array_ptr: number, iovec_array_len: number) => {
373 // This should generally only be used to print panic messages
374 console.log("FD_WRITE to " + fd + " in " + iovec_array_len + " chunks.");
375 const ptr_len_view = new Uint32Array(wasm.memory.buffer, iovec_array_ptr, iovec_array_len * 2);
376 for (var i = 0; i < iovec_array_len; i++) {
377 const bytes_view = new Uint8Array(wasm.memory.buffer, ptr_len_view[i*2], ptr_len_view[i*2+1]);
378 console.log(String.fromCharCode(...bytes_view));
382 "random_get": (buf_ptr: number, buf_len: number) => {
383 const buf = new Uint8Array(wasm.memory.buffer, buf_ptr, buf_len);
384 crypto.getRandomValues(buf);
387 "environ_sizes_get": (environ_var_count_ptr: number, environ_len_ptr: number) => {
388 // This is called before fd_write to format + print panic messages
389 console.log("wasi_snapshot_preview1:environ_sizes_get");
390 const out_count_view = new Uint32Array(wasm.memory.buffer, environ_var_count_ptr, 1);
391 out_count_view[0] = 1;
392 const out_len_view = new Uint32Array(wasm.memory.buffer, environ_len_ptr, 1);
393 out_len_view[0] = "RUST_BACKTRACE=1".length + 1; // Note that string must be NULL-terminated
396 "environ_get": (environ_ptr: number, environ_buf_ptr: number) => {
397 // This is called before fd_write to format + print panic messages
398 console.log("wasi_snapshot_preview1:environ_get");
399 const out_ptrs = new Uint32Array(wasm.memory.buffer, environ_ptr, 2);
400 out_ptrs[0] = environ_buf_ptr;
401 out_ptrs[1] = "RUST_BACKTRACE=1".length;
402 const out_environ = new Uint8Array(wasm.memory.buffer, environ_buf_ptr, out_ptrs[1]);
403 for (var i = 0; i < out_ptrs[1]; i++) { out_environ[i] = "RUST_BACKTRACE=1".codePointAt(i); }
404 out_environ[out_ptrs[1]] = 0;
407 "proc_exit" : () => {
408 console.log("wasi_snapshot_preview1:proc_exit");
412 var wasm: any = null;
413 let isWasmInitialized: boolean = false;
416 if target == Target.NODEJS:
417 res += """import * as fs from 'fs';
418 import { webcrypto as crypto } from 'crypto';
419 export async function initializeWasm(path: string) {
420 const source = fs.readFileSync(path);
421 imports.env["js_invoke_function"] = js_invoke;
422 const { instance: wasmInstance } = await WebAssembly.instantiate(source, imports);
423 wasm = wasmInstance.exports;
424 if (!wasm.test_bigint_pass_deadbeef0badf00d(BigInt("0xdeadbeef0badf00d"))) {
425 throw new Error(\"Currently need BigInt-as-u64 support, try ----experimental-wasm-bigint");
427 isWasmInitialized = true;
432 export async function initializeWasm(uri: string) {
433 const stream = fetch(uri);
434 imports.env["js_invoke_function"] = js_invoke;
435 const { instance: wasmInstance } = await WebAssembly.instantiateStreaming(stream, imports);
436 wasm = wasmInstance.exports;
437 if (!wasm.test_bigint_pass_deadbeef0badf00d(BigInt("0xdeadbeef0badf00d"))) {
438 throw new Error(\"Currently need BigInt-as-u64 support, try ----experimental-wasm-bigint");
440 isWasmInitialized = true;
450 const nextMultipleOfFour = (value: number) => {
451 return Math.ceil(value / 4) * 4;
454 export function encodeUint8Array (inputArray: Uint8Array): number {
455 const cArrayPointer = wasm.TS_malloc(inputArray.length + 4);
456 const arrayLengthView = new Uint32Array(wasm.memory.buffer, cArrayPointer, 1);
457 arrayLengthView[0] = inputArray.length;
458 const arrayMemoryView = new Uint8Array(wasm.memory.buffer, cArrayPointer + 4, inputArray.length);
459 arrayMemoryView.set(inputArray);
460 return cArrayPointer;
462 export function encodeUint32Array (inputArray: Uint32Array|Array<number>): number {
463 const cArrayPointer = wasm.TS_malloc((inputArray.length + 1) * 4);
464 const arrayMemoryView = new Uint32Array(wasm.memory.buffer, cArrayPointer, inputArray.length);
465 arrayMemoryView.set(inputArray, 1);
466 arrayMemoryView[0] = inputArray.length;
467 return cArrayPointer;
469 export function encodeUint64Array (inputArray: BigUint64Array|Array<bigint>): number {
470 const cArrayPointer = wasm.TS_malloc(inputArray.length * 8 + 1);
471 const arrayLengthView = new Uint32Array(wasm.memory.buffer, cArrayPointer, 1);
472 arrayLengthView[0] = inputArray.length;
473 const arrayMemoryView = new BigUint64Array(wasm.memory.buffer, cArrayPointer + 4, inputArray.length);
474 arrayMemoryView.set(inputArray);
475 return cArrayPointer;
478 export function check_arr_len(arr: Uint8Array, len: number): Uint8Array {
479 if (arr.length != len) { throw new Error("Expected array of length " + len + "got " + arr.length); }
483 export function getArrayLength(arrayPointer: number): number {
484 const arraySizeViewer = new Uint32Array(wasm.memory.buffer, arrayPointer, 1);
485 return arraySizeViewer[0];
487 export function decodeUint8Array (arrayPointer: number, free = true): Uint8Array {
488 const arraySize = getArrayLength(arrayPointer);
489 const actualArrayViewer = new Uint8Array(wasm.memory.buffer, arrayPointer + 4, arraySize);
490 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
491 // will free the underlying memory when it becomes unreachable instead of copying here.
492 // Note that doing so may have edge-case interactions with memory resizing (invalidating the buffer).
493 const actualArray = actualArrayViewer.slice(0, arraySize);
495 wasm.TS_free(arrayPointer);
499 const decodeUint32Array = (arrayPointer: number, free = true) => {
500 const arraySize = getArrayLength(arrayPointer);
501 const actualArrayViewer = new Uint32Array(
502 wasm.memory.buffer, // value
503 arrayPointer + 4, // offset (ignoring length bytes)
504 arraySize // uint32 count
506 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
507 // will free the underlying memory when it becomes unreachable instead of copying here.
508 const actualArray = actualArrayViewer.slice(0, arraySize);
510 wasm.TS_free(arrayPointer);
515 export function getU32ArrayElem(arrayPointer: number, idx: number): number {
516 const actualArrayViewer = new Uint32Array(wasm.memory.buffer, arrayPointer + 4, idx + 1);
517 return actualArrayViewer[idx];
520 export function encodeString(str: string): number {
521 const charArray = new TextEncoder().encode(str);
522 return encodeUint8Array(charArray);
525 export function decodeString(stringPointer: number, free = true): string {
526 const arraySize = getArrayLength(stringPointer);
527 const memoryView = new Uint8Array(wasm.memory.buffer, stringPointer + 4, arraySize);
528 const result = new TextDecoder("utf-8").decode(memoryView);
531 wasm.TS_free(stringPointer);
541 def get_java_arr_len(self, arr_name):
542 return "bindings.getArrayLength(" + arr_name + ")"
543 def get_java_arr_elem(self, elem_ty, arr_name, idx):
544 if elem_ty.c_ty == "uint32_t" or elem_ty.c_ty == "uintptr_t" or elem_ty.c_ty.endswith("Array"):
545 return "bindings.getU32ArrayElem(" + arr_name + ", " + idx + ")"
548 def constr_hu_array(self, ty_info, arr_len):
549 return "new Array(" + arr_len + ").fill(null)"
551 def primitive_arr_from_hu(self, mapped_ty, fixed_len, arr_name):
553 if fixed_len is not None:
554 assert mapped_ty.c_ty == "int8_t"
555 inner = "bindings.check_arr_len(" + arr_name + ", " + fixed_len + ")"
556 if mapped_ty.c_ty.endswith("Array"):
557 return ("bindings.encodeUint32Array(" + inner + ")", "")
558 elif mapped_ty.c_ty == "uint8_t" or mapped_ty.c_ty == "int8_t":
559 return ("bindings.encodeUint8Array(" + inner + ")", "")
560 elif mapped_ty.c_ty == "uint32_t":
561 return ("bindings.encodeUint32Array(" + inner + ")", "")
562 elif mapped_ty.c_ty == "int64_t":
563 return ("bindings.encodeUint64Array(" + inner + ")", "")
565 print(mapped_ty.c_ty)
568 def primitive_arr_to_hu(self, mapped_ty, fixed_len, arr_name, conv_name):
569 assert mapped_ty.c_ty == "uint8_t" or mapped_ty.c_ty == "int8_t"
570 return "const " + conv_name + ": Uint8Array = bindings.decodeUint8Array(" + arr_name + ");"
572 def var_decl_statement(self, ty_string, var_name, statement):
573 return "const " + var_name + ": " + ty_string + " = " + statement
575 def java_arr_ty_str(self, elem_ty_str):
578 def for_n_in_range(self, n, minimum, maximum):
579 return "for (var " + n + " = " + minimum + "; " + n + " < " + maximum + "; " + n + "++) {"
580 def for_n_in_arr(self, n, arr_name, arr_elem_ty):
581 return (arr_name + ".forEach((" + n + ": " + arr_elem_ty.java_hu_ty + ") => { ", " })")
583 def get_ptr(self, var):
584 return "CommonBase.get_ptr_of(" + var + ")"
585 def set_null_skip_free(self, var):
586 return "CommonBase.set_null_skip_free(" + var + ");"
588 def add_ref(self, holder, referent):
589 return "CommonBase.add_ref_from(" + holder + ", " + referent + ")"
591 def obj_defined(self, struct_names, folder):
592 with open(self.outdir + "/index.mts", 'a') as index:
593 index.write(f"export * from './{folder}/{struct_names[0]}.mjs';\n")
594 with open(self.outdir + "/imports.mts.part", 'a') as imports:
595 imports.write(f"import {{ {', '.join(struct_names)} }} from '../{folder}/{struct_names[0]}.mjs';\n")
597 def native_c_unitary_enum_map(self, struct_name, variants, enum_doc_comment):
598 out_c = "static inline LDK" + struct_name + " LDK" + struct_name + "_from_js(int32_t ord) {\n"
599 out_c = out_c + "\tswitch (ord) {\n"
602 out_typescript_enum_fields = ""
604 for var, var_docs in variants:
605 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
607 if var_docs is not None:
608 out_typescript_enum_fields += f"/**\n * {var_docs}\n */\n"
609 out_typescript_enum_fields += f"{var},\n\t\t\t\t"
610 out_c = out_c + "\t}\n"
611 out_c = out_c + "\tabort();\n"
612 out_c = out_c + "}\n"
614 out_c = out_c + "static inline int32_t LDK" + struct_name + "_to_js(LDK" + struct_name + " val) {\n"
615 out_c = out_c + "\tswitch (val) {\n"
617 for var, _ in variants:
618 out_c = out_c + "\t\tcase " + var + ": return %d;\n" % ord_v
620 out_c = out_c + "\t\tdefault: abort();\n"
621 out_c = out_c + "\t}\n"
622 out_c = out_c + "}\n"
624 out_typescript = f"""
625 export enum {struct_name} {{
626 {out_typescript_enum_fields}
629 out_typescript_enum = f"export {{ {struct_name} }} from \"../bindings.mjs\";"
630 self.obj_defined([struct_name], "enums")
631 return (out_c, out_typescript_enum, out_typescript)
633 def c_unitary_enum_to_native_call(self, ty_info):
634 return (ty_info.rust_obj + "_to_js(", ")")
635 def native_unitary_enum_to_c_call(self, ty_info):
636 return (ty_info.rust_obj + "_from_js(", ")")
638 def native_c_map_trait(self, struct_name, field_var_conversions, flattened_field_var_conversions, field_function_lines, trait_doc_comment):
639 out_typescript_bindings = "\n\n\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: START\n\n"
641 super_instantiator = ""
642 bindings_instantiator = ""
643 pointer_to_adder = ""
644 impl_constructor_arguments = ""
645 for var in flattened_field_var_conversions:
646 if isinstance(var, ConvInfo):
647 impl_constructor_arguments += f", {var.arg_name}: {var.java_hu_ty}"
648 super_instantiator += first_to_lower(var.arg_name) + ", "
649 if var.from_hu_conv is not None:
650 bindings_instantiator += ", " + var.from_hu_conv[0]
651 if var.from_hu_conv[1] != "":
652 pointer_to_adder += "\t\t\t" + var.from_hu_conv[1] + ";\n"
654 bindings_instantiator += ", " + first_to_lower(var.arg_name)
656 bindings_instantiator += ", " + first_to_lower(var[1]) + ".bindings_instance"
657 super_instantiator += first_to_lower(var[1]) + "_impl, "
658 pointer_to_adder += "\t\timpl_holder.held.ptrs_to.push(" + first_to_lower(var[1]) + ");\n"
659 impl_constructor_arguments += f", {first_to_lower(var[1])}_impl: {var[0].replace('LDK', '')}Interface"
661 super_constructor_statements = ""
662 trait_constructor_arguments = ""
663 for var in field_var_conversions:
664 if isinstance(var, ConvInfo):
665 trait_constructor_arguments += ", " + var.arg_name
667 super_constructor_statements += "\t\tconst " + first_to_lower(var[1]) + " = " + var[1] + ".new_impl(" + super_instantiator + ");\n"
668 trait_constructor_arguments += ", " + first_to_lower(var[1]) + ".bindings_instance"
669 for suparg in var[2]:
670 if isinstance(suparg, ConvInfo):
671 trait_constructor_arguments += ", " + suparg.arg_name
673 trait_constructor_arguments += ", " + suparg[1]
675 # BUILD INTERFACE METHODS
676 out_java_interface = ""
677 out_interface_implementation_overrides = ""
679 for fn_line in field_function_lines:
680 java_method_descriptor = ""
681 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
682 out_java_interface += "\t" + fn_line.fn_name + "("
683 out_interface_implementation_overrides += f"\t\t\t{fn_line.fn_name} ("
685 for idx, arg_conv_info in enumerate(fn_line.args_ty):
687 out_java_interface += ", "
688 out_interface_implementation_overrides += ", "
689 out_java_interface += f"{arg_conv_info.arg_name}: {arg_conv_info.java_hu_ty}"
690 out_interface_implementation_overrides += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
691 java_method_descriptor += arg_conv_info.java_fn_ty_arg
692 out_java_interface += f"): {fn_line.ret_ty_info.java_hu_ty};\n"
693 java_method_descriptor += ")" + fn_line.ret_ty_info.java_fn_ty_arg
694 java_methods.append((fn_line.fn_name, java_method_descriptor))
696 out_interface_implementation_overrides += f"): {fn_line.ret_ty_info.java_ty} {{\n"
698 for arg_info in fn_line.args_ty:
699 if arg_info.to_hu_conv is not None:
700 out_interface_implementation_overrides += "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
702 if fn_line.ret_ty_info.java_ty != "void":
703 out_interface_implementation_overrides += "\t\t\t\tconst ret: " + fn_line.ret_ty_info.java_hu_ty + " = arg." + fn_line.fn_name + "("
705 out_interface_implementation_overrides += f"\t\t\t\targ." + fn_line.fn_name + "("
707 for idx, arg_info in enumerate(fn_line.args_ty):
709 out_interface_implementation_overrides += ", "
710 if arg_info.to_hu_conv_name is not None:
711 out_interface_implementation_overrides += arg_info.to_hu_conv_name
713 out_interface_implementation_overrides += arg_info.arg_name
715 out_interface_implementation_overrides += ");\n"
716 if fn_line.ret_ty_info.java_ty != "void":
717 if fn_line.ret_ty_info.from_hu_conv is not None:
718 out_interface_implementation_overrides += "\t\t\t\t" + f"const result: {fn_line.ret_ty_info.java_ty} = " + fn_line.ret_ty_info.from_hu_conv[0].replace("\n", "\n\t\t\t\t") + ";\n"
719 if fn_line.ret_ty_info.from_hu_conv[1] != "":
720 out_interface_implementation_overrides += "\t\t\t\t" + fn_line.ret_ty_info.from_hu_conv[1].replace("this", "impl_holder.held").replace("\n", "\n\t\t\t\t") + ";\n"
721 #if fn_line.ret_ty_info.rust_obj in result_types:
722 # XXX: We need to handle this in conversion logic so that its cross-language!
723 # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead
724 # out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\tret.ptr = 0;\n"
725 out_interface_implementation_overrides += "\t\t\t\treturn result;\n"
727 out_interface_implementation_overrides += "\t\t\t\treturn ret;\n"
728 out_interface_implementation_overrides += f"\t\t\t}},\n"
730 out_typescript_human = f"""
731 {self.hu_struct_file_prefix}
733 export interface {struct_name.replace("LDK", "")}Interface {{
734 {out_java_interface}}}
736 class {struct_name}Holder {{
737 held: {struct_name.replace("LDK", "")};
740 export class {struct_name.replace("LDK","")} extends CommonBase {{
742 public bindings_instance?: bindings.{struct_name};
745 constructor(_dummy: object, ptr: number) {{
746 super(ptr, bindings.{struct_name.replace("LDK","")}_free);
747 this.bindings_instance = null;
750 static new_impl(arg: {struct_name.replace("LDK", "")}Interface{impl_constructor_arguments}): {struct_name.replace("LDK", "")} {{
751 const impl_holder: {struct_name}Holder = new {struct_name}Holder();
752 let structImplementation = {{
753 {out_interface_implementation_overrides} }} as bindings.{struct_name};
754 {super_constructor_statements} const ptr: number = bindings.{struct_name}_new(structImplementation{bindings_instantiator});
756 impl_holder.held = new {struct_name.replace("LDK", "")}(null, ptr);
757 impl_holder.held.bindings_instance = structImplementation;
758 {pointer_to_adder} return impl_holder.held;
761 self.obj_defined([struct_name.replace("LDK", ""), struct_name.replace("LDK", "") + "Interface"], "structs")
763 out_typescript_bindings += "export interface " + struct_name + " {\n"
765 for fn_line in field_function_lines:
766 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
767 out_typescript_bindings += f"\t{fn_line.fn_name} ("
769 for idx, arg_conv_info in enumerate(fn_line.args_ty):
771 out_typescript_bindings = out_typescript_bindings + ", "
772 out_typescript_bindings += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
774 out_typescript_bindings += f"): {fn_line.ret_ty_info.java_ty};\n"
776 out_typescript_bindings += "}\n\n"
778 out_typescript_bindings += f"export function {struct_name}_new(impl: {struct_name}"
779 for var in flattened_field_var_conversions:
780 if isinstance(var, ConvInfo):
781 out_typescript_bindings += f", {var.arg_name}: {var.java_ty}"
783 out_typescript_bindings += f", {var[1]}: {var[0]}"
785 out_typescript_bindings += f"""): number {{
786 if(!isWasmInitialized) {{
787 throw new Error("initializeWasm() must be awaited first!");
789 var new_obj_idx = js_objs.length;
790 for (var i = 0; i < js_objs.length; i++) {{
791 if (js_objs[i] == null || js_objs[i] == undefined) {{ new_obj_idx = i; break; }}
793 js_objs[i] = new WeakRef(impl);
794 return wasm.TS_{struct_name}_new(i);
798 out_typescript_bindings += '\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: END\n\n\n'
800 # Now that we've written out our java code (and created java_meths), generate C
801 out_c = "typedef struct " + struct_name + "_JCalls {\n"
802 out_c += "\tatomic_size_t refcnt;\n"
803 out_c += "\tuint32_t instance_ptr;\n"
804 for var in flattened_field_var_conversions:
805 if isinstance(var, ConvInfo):
806 # We're a regular ol' field
810 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
811 out_c = out_c + "} " + struct_name + "_JCalls;\n"
813 for fn_line in field_function_lines:
814 if fn_line.fn_name == "free":
815 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
816 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
817 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
818 out_c = out_c + "\t\tFREE(j_calls);\n"
819 out_c = out_c + "\t}\n}\n"
821 for idx, fn_line in enumerate(field_function_lines):
822 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
823 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
824 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_" + struct_name + "_jcall("
825 if fn_line.self_is_const:
826 out_c = out_c + "const void* this_arg"
828 out_c = out_c + "void* this_arg"
830 for idx, arg in enumerate(fn_line.args_ty):
831 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
833 out_c = out_c + ") {\n"
834 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
836 for arg_info in fn_line.args_ty:
837 if arg_info.ret_conv is not None:
838 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
839 out_c = out_c + arg_info.arg_name
840 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
842 if fn_line.ret_ty_info.c_ty.endswith("Array"):
843 out_c += "\t" + fn_line.ret_ty_info.c_ty + " ret = (" + fn_line.ret_ty_info.c_ty + ")"
844 out_c += "js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
845 elif fn_line.ret_ty_info.java_ty == "void":
846 out_c = out_c + "\tjs_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
847 elif fn_line.ret_ty_info.java_hu_ty == "string":
848 out_c = out_c + "\tjstring ret = (jstring)js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
849 elif not fn_line.ret_ty_info.passed_as_ptr:
850 out_c = out_c + "\treturn js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
852 out_c = out_c + "\tuint32_t ret = js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
854 self.function_ptrs[self.function_ptr_counter] = (struct_name, fn_line.fn_name)
855 self.function_ptr_counter += 1
857 for idx, arg_info in enumerate(fn_line.args_ty):
858 if arg_info.ret_conv is not None:
859 out_c = out_c + ", (uint32_t)" + arg_info.ret_conv_name
861 out_c = out_c + ", (uint32_t)" + arg_info.arg_name
862 out_c = out_c + ");\n"
863 if fn_line.ret_ty_info.arg_conv is not None:
864 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"
866 out_c = out_c + "}\n"
868 # Write out a clone function whether we need one or not, as we use them in moving to rust
869 out_c = out_c + "static void " + struct_name + "_JCalls_cloned(" + struct_name + "* new_obj) {\n"
870 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) new_obj->this_arg;\n"
871 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
872 for var in field_var_conversions:
873 if not isinstance(var, ConvInfo):
874 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
875 out_c = out_c + "}\n"
877 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (JSValue o"
878 for var in flattened_field_var_conversions:
879 if isinstance(var, ConvInfo):
880 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
882 out_c = out_c + ", JSValue " + var[1]
883 out_c = out_c + ") {\n"
885 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
886 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
887 out_c = out_c + "\tcalls->instance_ptr = o;\n"
889 for (fn_name, java_meth_descr) in java_meths:
890 if fn_name != "free" and fn_name != "cloned":
891 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
892 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
894 for var in flattened_field_var_conversions:
895 if isinstance(var, ConvInfo) and var.arg_conv is not None:
896 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
897 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
898 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
899 for fn_line in field_function_lines:
900 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
901 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_" + struct_name + "_jcall,\n"
902 elif fn_line.fn_name == "free":
903 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
905 out_c = out_c + "\t\t.cloned = " + struct_name + "_JCalls_cloned,\n"
906 for var in field_var_conversions:
907 if isinstance(var, ConvInfo):
908 if var.arg_conv_name is not None:
909 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
910 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
912 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
913 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
915 out_c += "\t\t." + var[1] + " = " + var[0] + "_init(" + var[1]
916 for suparg in var[2]:
917 if isinstance(suparg, ConvInfo):
918 out_c += ", " + suparg.arg_name
920 out_c += ", " + suparg[1]
922 out_c = out_c + "\t};\n"
923 for var in flattened_field_var_conversions:
924 if not isinstance(var, ConvInfo):
925 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
926 out_c = out_c + "\treturn ret;\n"
927 out_c = out_c + "}\n"
929 out_c = out_c + self.c_fn_ty_pfx + "long " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "JSValue o"
930 for var in flattened_field_var_conversions:
931 if isinstance(var, ConvInfo):
932 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
934 out_c = out_c + ", JSValue " + var[1]
935 out_c = out_c + ") {\n"
936 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
937 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(o"
938 for var in flattened_field_var_conversions:
939 if isinstance(var, ConvInfo):
940 out_c = out_c + ", " + var.arg_name
942 out_c = out_c + ", " + var[1]
943 out_c = out_c + ");\n"
944 out_c = out_c + "\treturn (long)res_ptr;\n"
945 out_c = out_c + "}\n"
947 return (out_typescript_bindings, out_typescript_human, out_c)
949 def trait_struct_inc_refcnt(self, ty_info):
952 def map_complex_enum(self, struct_name, variant_list, camel_to_snake, enum_doc_comment):
953 bindings_type = struct_name.replace("LDK", "")
954 java_hu_type = struct_name.replace("LDK", "").replace("COption", "Option")
960 out_java_enum += (self.hu_struct_file_prefix)
963 java_hu_class += "export class " + java_hu_type + " extends CommonBase {\n"
964 java_hu_class += "\tprotected constructor(_dummy: object, ptr: number) { super(ptr, bindings." + bindings_type + "_free); }\n"
965 java_hu_class += "\t/* @internal */\n"
966 java_hu_class += f"\tpublic static constr_from_ptr(ptr: number): {java_hu_type} {{\n"
967 java_hu_class += f"\t\tconst raw_ty: number = bindings." + struct_name + "_ty_from_ptr(ptr);\n"
968 out_c += self.c_fn_ty_pfx + "uint32_t" + self.c_fn_name_define_pfx(struct_name + "_ty_from_ptr", True) + self.ptr_c_ty + " ptr) {\n"
969 out_c += "\t" + struct_name + " *obj = (" + struct_name + "*)(ptr & ~1);\n"
970 out_c += "\tswitch(obj->tag) {\n"
971 java_hu_class += "\t\tswitch (raw_ty) {\n"
972 java_hu_subclasses = ""
974 out_java += "export class " + struct_name + " {\n"
975 out_java += "\tprotected constructor() {}\n"
977 for var in variant_list:
978 java_hu_subclasses = java_hu_subclasses + "export class " + java_hu_type + "_" + var.var_name + " extends " + java_hu_type + " {\n"
979 java_hu_class += f"\t\t\tcase {var_idx}: "
980 java_hu_class += "return new " + java_hu_type + "_" + var.var_name + "(ptr);\n"
981 out_c += f"\t\tcase {struct_name}_{var.var_name}: return {var_idx};\n"
983 for idx, (field_ty, field_docs) in enumerate(var.fields):
984 java_hu_subclasses = java_hu_subclasses + "\tpublic " + field_ty.arg_name + f": {field_ty.java_hu_ty};\n"
985 if field_ty.to_hu_conv is not None:
986 hu_conv_body += f"\t\tconst {field_ty.arg_name}: {field_ty.java_ty} = bindings.{struct_name}_{var.var_name}_get_{field_ty.arg_name}(ptr);\n"
987 hu_conv_body += f"\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
988 hu_conv_body += f"\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
990 hu_conv_body += f"\t\tthis.{field_ty.arg_name} = bindings.{struct_name}_{var.var_name}_get_{field_ty.arg_name}(ptr);\n"
991 java_hu_subclasses += "\t/* @internal */\n"
992 java_hu_subclasses += "\tpublic constructor(ptr: number) {\n\t\tsuper(null, ptr);\n"
993 java_hu_subclasses = java_hu_subclasses + hu_conv_body
994 java_hu_subclasses = java_hu_subclasses + "\t}\n}\n"
997 java_hu_class += "\t\t\tdefault:\n\t\t\t\tthrow new Error('oops, this should be unreachable'); // Unreachable without extending the (internal) bindings interface\n\t\t}\n\t}\n\n"
998 out_java += self.fn_call_body(struct_name + "_ty_from_ptr", "uint32_t", "number", "ptr: number", "ptr")
999 out_c += ("\t\tdefault: abort();\n")
1000 out_c += ("\t}\n}\n")
1002 for var in variant_list:
1003 for idx, (field_map, _) in enumerate(var.fields):
1004 fn_name = f"{struct_name}_{var.var_name}_get_{field_map.arg_name}"
1005 out_c += self.c_fn_ty_pfx + field_map.c_ty + self.c_fn_name_define_pfx(fn_name, True) + self.ptr_c_ty + " ptr) {\n"
1006 out_c += "\t" + struct_name + " *obj = (" + struct_name + "*)(ptr & ~1);\n"
1007 out_c += f"\tassert(obj->tag == {struct_name}_{var.var_name});\n"
1008 if field_map.ret_conv is not None:
1009 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
1010 if var.tuple_variant:
1011 out_c += "obj->" + camel_to_snake(var.var_name)
1013 out_c += "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name
1014 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
1015 out_c += "\treturn " + field_map.ret_conv_name + ";\n"
1017 if var.tuple_variant:
1018 out_c += "\treturn " + "obj->" + camel_to_snake(var.var_name) + ";\n"
1020 out_c += "\treturn " + "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name + ";\n"
1022 out_java += self.fn_call_body(fn_name, field_map.c_ty, field_map.java_ty, "ptr: number", "ptr")
1023 out_java_enum += java_hu_class
1024 self.struct_file_suffixes[java_hu_type] = java_hu_subclasses
1025 self.obj_defined([java_hu_type], "structs")
1026 return (out_java, out_java_enum, out_c)
1028 def map_opaque_struct(self, struct_name, struct_doc_comment):
1029 implementations = ""
1032 hu_name = struct_name.replace("LDKC2Tuple", "TwoTuple").replace("LDKC3Tuple", "ThreeTuple").replace("LDK", "")
1033 out_opaque_struct_human = f"{self.hu_struct_file_prefix}"
1034 if struct_name.startswith("LDKLocked"):
1035 out_opaque_struct_human += "/** XXX: DO NOT USE THIS - it remains locked until the GC runs (if that ever happens */"
1036 out_opaque_struct_human += f"""
1037 export class {hu_name} extends CommonBase {implementations}{{
1039 public constructor(_dummy: object, ptr: number) {{
1040 super(ptr, bindings.{struct_name.replace("LDK","")}_free);
1044 self.obj_defined([hu_name], "structs")
1045 return out_opaque_struct_human
1047 def map_tuple(self, struct_name):
1048 return self.map_opaque_struct(struct_name, "A Tuple")
1050 def map_result(self, struct_name, res_map, err_map):
1051 human_ty = struct_name.replace("LDKCResult", "Result")
1053 suffixes = f"export class {human_ty}_OK extends {human_ty} {{\n"
1054 if res_map.java_hu_ty != "void":
1055 suffixes += "\tpublic res: " + res_map.java_hu_ty + ";\n"
1058 public constructor(_dummy: object, ptr: number) {{
1061 if res_map.java_hu_ty == "void":
1063 elif res_map.to_hu_conv is not None:
1064 suffixes += "\t\tconst res: " + res_map.java_ty + " = bindings." + struct_name.replace("LDK", "") + "_get_ok(ptr);\n"
1065 suffixes += "\t\t" + res_map.to_hu_conv.replace("\n", "\n\t\t")
1066 suffixes += "\n\t\tthis.res = " + res_map.to_hu_conv_name + ";\n"
1068 suffixes += "\t\tthis.res = bindings." + struct_name.replace("LDK", "") + "_get_ok(ptr);\n"
1069 suffixes += "\t}\n}\n"
1071 suffixes += f"export class {human_ty}_Err extends {human_ty} {{\n"
1072 if err_map.java_hu_ty != "void":
1073 suffixes += "\tpublic err: " + err_map.java_hu_ty + ";\n"
1076 public constructor(_dummy: object, ptr: number) {{
1079 if err_map.java_hu_ty == "void":
1081 elif err_map.to_hu_conv is not None:
1082 suffixes += "\t\tconst err: " + err_map.java_ty + " = bindings." + struct_name.replace("LDK", "") + "_get_err(ptr);\n"
1083 suffixes += "\t\t" + err_map.to_hu_conv.replace("\n", "\n\t\t")
1084 suffixes += "\n\t\tthis.err = " + err_map.to_hu_conv_name + ";\n"
1086 suffixes += "\t\tthis.err = bindings." + struct_name.replace("LDK", "") + "_get_err(ptr);\n"
1087 suffixes += "\t}\n}"
1089 self.struct_file_suffixes[human_ty] = suffixes
1090 self.obj_defined([human_ty], "structs")
1092 return f"""{self.hu_struct_file_prefix}
1094 export class {human_ty} extends CommonBase {{
1095 protected constructor(_dummy: object, ptr: number) {{
1096 super(ptr, bindings.{struct_name.replace("LDK","")}_free);
1099 public static constr_from_ptr(ptr: number): {human_ty} {{
1100 if (bindings.{struct_name.replace("LDK", "")}_is_ok(ptr)) {{
1101 return new {human_ty}_OK(null, ptr);
1103 return new {human_ty}_Err(null, ptr);
1108 def fn_call_body(self, method_name, return_c_ty, return_java_ty, method_argument_string, native_call_argument_string):
1109 has_return_value = return_c_ty != 'void'
1110 return_statement = 'return nativeResponseValue;'
1111 if not has_return_value:
1112 return_statement = '// debug statements here'
1114 return f"""export function {method_name}({method_argument_string}): {return_java_ty} {{
1115 if(!isWasmInitialized) {{
1116 throw new Error("initializeWasm() must be awaited first!");
1118 const nativeResponseValue = wasm.TS_{method_name}({native_call_argument_string});
1122 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):
1125 out_java_struct = None
1128 out_c += (self.c_fn_ty_pfx)
1129 out_c += (return_type_info.c_ty)
1130 out_java += (return_type_info.java_ty)
1131 if return_type_info.ret_conv is not None:
1132 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
1133 out_java += (" " + method_name + "(")
1134 out_c += (" " + self.c_fn_name_define_pfx(method_name, True))
1136 method_argument_string = ""
1137 native_call_argument_string = ""
1138 for idx, arg_conv_info in enumerate(argument_types):
1140 method_argument_string += (", ")
1141 native_call_argument_string += ', '
1143 if arg_conv_info.c_ty != "void":
1144 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
1145 method_argument_string += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
1146 native_call_argument_string += arg_conv_info.arg_name
1147 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)
1149 out_java_struct = ""
1151 out_java_struct += ("\t// Skipped " + method_name + "\n")
1154 out_java_struct += (
1155 "\tpublic static constructor_" + meth_n + "(")
1157 out_java_struct += ("\tpublic " + meth_n + "(")
1158 for idx, arg in enumerate(argument_types):
1160 if not takes_self or idx > 1:
1161 out_java_struct += (", ")
1164 if arg.java_ty != "void":
1165 if arg.arg_name in default_constructor_args:
1166 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
1167 if explode_idx != 0:
1168 out_java_struct += (", ")
1169 out_java_struct += arg.arg_name + "_" + explode_arg.arg_name + ": " + explode_arg.java_hu_ty
1171 out_java_struct += arg.arg_name + ": " + arg.java_hu_ty
1174 if out_java_struct is not None:
1175 out_java_struct += "): " + return_type_info.java_hu_ty + " {\n"
1176 for info in argument_types:
1177 if info.arg_conv is not None:
1178 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
1179 if return_type_info.ret_conv is not None:
1180 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
1181 elif return_type_info.c_ty != "void":
1182 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
1185 if c_call_string is None:
1186 out_c += (method_name + "(")
1188 out_c += (c_call_string)
1189 for idx, info in enumerate(argument_types):
1190 if info.arg_conv_name is not None:
1193 elif c_call_string is not None:
1195 out_c += (info.arg_conv_name)
1197 if return_type_info.ret_conv is not None:
1198 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
1201 for info in argument_types:
1202 if info.arg_conv_cleanup is not None:
1203 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
1204 if return_type_info.ret_conv is not None:
1205 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
1206 elif return_type_info.c_ty != "void":
1207 out_c += ("\n\treturn ret_val;")
1208 out_c += ("\n}\n\n")
1211 out_java_struct += ("\t\t")
1212 if return_type_info.java_ty != "void":
1213 out_java_struct += "const ret: " + return_type_info.java_ty + " = "
1214 out_java_struct += ("bindings." + method_name + "(")
1215 for idx, info in enumerate(argument_types):
1217 out_java_struct += (", ")
1218 if idx == 0 and takes_self:
1219 out_java_struct += ("this.ptr")
1220 elif info.arg_name in default_constructor_args:
1221 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
1222 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
1223 if explode_idx != 0:
1224 out_java_struct += (", ")
1225 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1226 if explode_arg.from_hu_conv is not None:
1227 out_java_struct += (
1228 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
1230 out_java_struct += (expl_arg_name)
1231 out_java_struct += (")")
1232 elif info.from_hu_conv is not None:
1233 out_java_struct += (info.from_hu_conv[0])
1235 out_java_struct += (info.arg_name)
1236 out_java_struct += (");\n")
1237 if return_type_info.to_hu_conv is not None:
1239 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
1240 return_type_info.to_hu_conv_name) + "\n")
1242 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
1244 for idx, info in enumerate(argument_types):
1245 if idx == 0 and takes_self:
1247 elif info.arg_name in default_constructor_args:
1248 for explode_arg in default_constructor_args[info.arg_name]:
1249 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1250 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
1251 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
1252 expl_arg_name).replace(
1253 "this", return_type_info.to_hu_conv_name) + ";\n")
1254 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
1255 if not takes_self and return_type_info.to_hu_conv_name is not None:
1256 out_java_struct += (
1257 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name).replace("\n", "\n\t\t") + ";\n")
1259 out_java_struct += ("\t\t" + info.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n")
1261 if return_type_info.to_hu_conv_name is not None:
1262 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
1263 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
1264 out_java_struct += ("\t\treturn ret;\n")
1265 out_java_struct += ("\t}\n\n")
1267 return (out_java, out_c, out_java_struct)
1270 for struct in self.struct_file_suffixes:
1271 with open(self.outdir + "/structs/" + struct + self.file_ext, "a") as src:
1272 src.write(self.struct_file_suffixes[struct])
1274 with open(self.outdir + "/bindings.mts", "a") as bindings:
1277 js_invoke = function(obj_ptr: number, fn_id: number, arg1: number, arg2: number, arg3: number, arg4: number, arg5: number, arg6: number, arg7: number, arg8: number, arg9: number, arg10: number) {
1278 const weak: WeakRef<object> = js_objs[obj_ptr];
1279 if (weak == null || weak == undefined) {
1280 console.error("Got function call on unknown/free'd JS object!");
1281 throw new Error("Got function call on unknown/free'd JS object!");
1283 const obj: object = weak.deref();
1284 if (obj == null || obj == undefined) {
1285 console.error("Got function call on GC'd JS object!");
1286 throw new Error("Got function call on GC'd JS object!");
1290 bindings.write("\tswitch (fn_id) {\n")
1291 for f in self.function_ptrs:
1292 bindings.write(f"\t\tcase {str(f)}: fn = Object.getOwnPropertyDescriptor(obj, \"{self.function_ptrs[f][1]}\"); break;\n")
1294 bindings.write("""\t\tdefault:
1295 console.error("Got unknown function call from C!");
1296 throw new Error("Got unknown function call from C!");
1298 if (fn == null || fn == undefined) {
1299 console.error("Got function call on incorrect JS object!");
1300 throw new Error("Got function call on incorrect JS object!");
1302 return fn.value.bind(obj)(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10);