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 = """
38 import * as version from './version.mjs';
40 const imports: any = {};
43 var js_objs: Array<WeakRef<object>> = [];
44 var js_invoke: Function;
46 imports.wasi_snapshot_preview1 = {
47 "fd_write": (fd: number, iovec_array_ptr: number, iovec_array_len: number) => {
48 // This should generally only be used to print panic messages
49 console.log("FD_WRITE to " + fd + " in " + iovec_array_len + " chunks.");
50 const ptr_len_view = new Uint32Array(wasm.memory.buffer, iovec_array_ptr, iovec_array_len * 2);
51 for (var i = 0; i < iovec_array_len; i++) {
52 const bytes_view = new Uint8Array(wasm.memory.buffer, ptr_len_view[i*2], ptr_len_view[i*2+1]);
53 console.log(String.fromCharCode(...bytes_view));
57 "fd_close": (_fd: number) => {
58 // This is not generally called, but may be referenced in debug builds
59 console.log("wasi_snapshot_preview1:fd_close");
60 return 58; // Not Supported
62 "fd_seek": (_fd: number, _offset: bigint, _whence: number, _new_offset: number) => {
63 // This is not generally called, but may be referenced in debug builds
64 console.log("wasi_snapshot_preview1:fd_seek");
65 return 58; // Not Supported
67 "random_get": (buf_ptr: number, buf_len: number) => {
68 const buf = new Uint8Array(wasm.memory.buffer, buf_ptr, buf_len);
69 crypto.getRandomValues(buf);
72 "environ_sizes_get": (environ_var_count_ptr: number, environ_len_ptr: number) => {
73 // This is called before fd_write to format + print panic messages
74 console.log("wasi_snapshot_preview1:environ_sizes_get");
75 const out_count_view = new Uint32Array(wasm.memory.buffer, environ_var_count_ptr, 1);
76 out_count_view[0] = 1;
77 const out_len_view = new Uint32Array(wasm.memory.buffer, environ_len_ptr, 1);
78 out_len_view[0] = "RUST_BACKTRACE=1".length + 1; // Note that string must be NULL-terminated
81 "environ_get": (environ_ptr: number, environ_buf_ptr: number) => {
82 // This is called before fd_write to format + print panic messages
83 console.log("wasi_snapshot_preview1:environ_get");
84 const out_ptrs = new Uint32Array(wasm.memory.buffer, environ_ptr, 2);
85 out_ptrs[0] = environ_buf_ptr;
86 out_ptrs[1] = "RUST_BACKTRACE=1".length;
87 const out_environ = new Uint8Array(wasm.memory.buffer, environ_buf_ptr, out_ptrs[1]);
88 for (var i = 0; i < out_ptrs[1]; i++) { out_environ[i] = "RUST_BACKTRACE=1".codePointAt(i); }
89 out_environ[out_ptrs[1]] = 0;
93 console.log("wasi_snapshot_preview1:proc_exit");
98 let isWasmInitialized: boolean = false;
101 if target == Target.NODEJS:
102 self.bindings_header += """import * as fs from 'fs';
103 import { webcrypto as crypto } from 'crypto';
105 export async function initializeWasm(path: string) {
106 const source = fs.readFileSync(path);
107 imports.env["js_invoke_function"] = js_invoke;
108 const { instance: wasmInstance } = await WebAssembly.instantiate(source, imports);"""
110 self.bindings_header += """
112 export async function initializeWasm(uri: string) {
113 const stream = fetch(uri);
114 imports.env["js_invoke_function"] = js_invoke;
115 const { instance: wasmInstance } = await WebAssembly.instantiateStreaming(stream, imports);"""
117 self.bindings_header += """
118 wasm = wasmInstance.exports;
119 if (!wasm.test_bigint_pass_deadbeef0badf00d(BigInt("0xdeadbeef0badf00d"))) {
120 throw new Error(\"Currently need BigInt-as-u64 support, try ----experimental-wasm-bigint");
123 if (decodeString(wasm.TS_get_lib_version_string()) !== version.get_ldk_java_bindings_version())
124 throw new Error(\"Compiled LDK library and LDK class failes do not match\");
125 // Fetching the LDK versions from C also checks that the header and binaries match
126 if (wasm.TS_get_ldk_c_bindings_version() == 0)
127 throw new Error(\"LDK version did not match the header we built against\");
128 if (wasm.TS_get_ldk_version() == 0)
129 throw new Error(\"LDK C bindings version did not match the header we built against\");
130 const c_bindings_version: string = decodeString(wasm.TS_get_ldk_c_bindings_version());
131 const ldk_version: string = decodeString(wasm.TS_get_ldk_version());
132 console.log(\"Loaded LDK-Java Bindings with LDK \" + ldk_version + \" and LDK-C-Bindings \" + c_bindings_version);
134 isWasmInitialized = true;
139 const nextMultipleOfFour = (value: number) => {
140 return Math.ceil(value / 4) * 4;
144 export function encodeUint8Array (inputArray: Uint8Array): number {
145 const cArrayPointer = wasm.TS_malloc(inputArray.length + 4);
146 const arrayLengthView = new Uint32Array(wasm.memory.buffer, cArrayPointer, 1);
147 arrayLengthView[0] = inputArray.length;
148 const arrayMemoryView = new Uint8Array(wasm.memory.buffer, cArrayPointer + 4, inputArray.length);
149 arrayMemoryView.set(inputArray);
150 return cArrayPointer;
153 export function encodeUint32Array (inputArray: Uint32Array|Array<number>): number {
154 const cArrayPointer = wasm.TS_malloc((inputArray.length + 1) * 4);
155 const arrayMemoryView = new Uint32Array(wasm.memory.buffer, cArrayPointer, inputArray.length);
156 arrayMemoryView.set(inputArray, 1);
157 arrayMemoryView[0] = inputArray.length;
158 return cArrayPointer;
161 export function encodeUint64Array (inputArray: BigUint64Array|Array<bigint>): number {
162 const cArrayPointer = wasm.TS_malloc(inputArray.length * 8 + 1);
163 const arrayLengthView = new Uint32Array(wasm.memory.buffer, cArrayPointer, 1);
164 arrayLengthView[0] = inputArray.length;
165 const arrayMemoryView = new BigUint64Array(wasm.memory.buffer, cArrayPointer + 4, inputArray.length);
166 arrayMemoryView.set(inputArray);
167 return cArrayPointer;
171 export function check_arr_len(arr: Uint8Array, len: number): Uint8Array {
172 if (arr.length != len) { throw new Error("Expected array of length " + len + "got " + arr.length); }
177 export function getArrayLength(arrayPointer: number): number {
178 const arraySizeViewer = new Uint32Array(wasm.memory.buffer, arrayPointer, 1);
179 return arraySizeViewer[0];
182 export function decodeUint8Array (arrayPointer: number, free = true): Uint8Array {
183 const arraySize = getArrayLength(arrayPointer);
184 const actualArrayViewer = new Uint8Array(wasm.memory.buffer, arrayPointer + 4, arraySize);
185 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
186 // will free the underlying memory when it becomes unreachable instead of copying here.
187 // Note that doing so may have edge-case interactions with memory resizing (invalidating the buffer).
188 const actualArray = actualArrayViewer.slice(0, arraySize);
190 wasm.TS_free(arrayPointer);
194 const decodeUint32Array = (arrayPointer: number, free = true) => {
195 const arraySize = getArrayLength(arrayPointer);
196 const actualArrayViewer = new Uint32Array(
197 wasm.memory.buffer, // value
198 arrayPointer + 4, // offset (ignoring length bytes)
199 arraySize // uint32 count
201 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
202 // will free the underlying memory when it becomes unreachable instead of copying here.
203 const actualArray = actualArrayViewer.slice(0, arraySize);
205 wasm.TS_free(arrayPointer);
211 export function getU32ArrayElem(arrayPointer: number, idx: number): number {
212 const actualArrayViewer = new Uint32Array(wasm.memory.buffer, arrayPointer + 4, idx + 1);
213 return actualArrayViewer[idx];
217 export function encodeString(str: string): number {
218 const charArray = new TextEncoder().encode(str);
219 return encodeUint8Array(charArray);
223 export function decodeString(stringPointer: number, free = true): string {
224 const arraySize = getArrayLength(stringPointer);
225 const memoryView = new Uint8Array(wasm.memory.buffer, stringPointer + 4, arraySize);
226 const result = new TextDecoder("utf-8").decode(memoryView);
229 wasm.TS_free(stringPointer);
236 self.bindings_header += """
238 export function getRemainingAllocationCount(): number {
239 return wasm.TS_allocs_remaining();
242 export function debugPrintRemainingAllocs() {
243 wasm.TS_print_leaks();
247 self.bindings_header += "\n/* @internal */ export function getRemainingAllocationCount(): number { return 0; }\n"
248 self.bindings_header += "/* @internal */ export function debugPrintRemainingAllocs() { }\n"
250 with open(outdir + "/index.mts", 'a') as index:
251 index.write("""import { initializeWasm as bindingsInit } from './bindings.mjs';
252 export function initializeWasm(path: string) {
257 self.bindings_version_file = """export function get_ldk_java_bindings_version(): String {
258 return "<git_version_ldk_garbagecollected>";
261 self.bindings_footer = ""
263 self.common_base = """
264 function freer(f: () => void) { f() }
265 const finalizer = new FinalizationRegistry(freer);
266 function get_freeer(ptr: number, free_fn: (ptr: number) => void) {
272 export default class CommonBase {
273 protected ptr: number;
274 protected ptrs_to: object[] = [];
275 protected constructor(ptr: number, free_fn: (ptr: number) => void) {
277 if (Number.isFinite(ptr) && ptr != 0){
278 finalizer.register(this, get_freeer(ptr, free_fn));
281 // In Java, protected means "any subclass can access fields on any other subclass'"
282 // In TypeScript, protected means "any subclass can access parent fields on instances of itself"
283 // To work around this, we add accessors for other instances' protected fields here.
284 protected static add_ref_from(holder: CommonBase, referent: object) {
285 holder.ptrs_to.push(referent);
287 protected static get_ptr_of(o: CommonBase) {
290 protected static set_null_skip_free(o: CommonBase) {
292 finalizer.unregister(o);
297 self.txout_defn = """export class TxOut extends CommonBase {
298 /** The script_pubkey in this output */
299 public script_pubkey: Uint8Array;
300 /** The value, in satoshis, of this output */
301 public value: bigint;
304 public constructor(_dummy: object, ptr: number) {
305 super(ptr, bindings.TxOut_free);
306 this.script_pubkey = bindings.decodeUint8Array(bindings.TxOut_get_script_pubkey(ptr));
307 this.value = bindings.TxOut_get_value(ptr);
309 public constructor_new(value: bigint, script_pubkey: Uint8Array): TxOut {
310 return new TxOut(null, bindings.TxOut_new(bindings.encodeUint8Array(script_pubkey), value));
313 self.obj_defined(["TxOut"], "structs")
315 self.c_file_pfx = """#include "js-wasm.h"
316 #include <stdatomic.h>
317 #include <lightning.h>
319 // These should be provided...somehow...
320 void *memset(void *s, int c, size_t n);
321 void *memcpy(void *dest, const void *src, size_t n);
322 int memcmp(const void *s1, const void *s2, size_t n);
324 extern void __attribute__((noreturn)) abort(void);
325 static inline void assert(bool expression) {
326 if (!expression) { abort(); }
329 uint32_t __attribute__((export_name("test_bigint_pass_deadbeef0badf00d"))) test_bigint_pass_deadbeef0badf00d(uint64_t val) {
330 return val == 0xdeadbeef0badf00dULL;
336 self.c_file_pfx += """
337 void *malloc(size_t size);
338 void free(void *ptr);
340 #define MALLOC(a, _) malloc(a)
341 #define do_MALLOC(a, _b, _c) malloc(a)
342 #define FREE(p) if ((unsigned long)(p) > 4096) { free(p); }
343 #define DO_ASSERT(a) (void)(a)
345 #define CHECK_ACCESS(p)
346 #define CHECK_INNER_FIELD_ACCESS_OR_NULL(v)
349 self.c_file_pfx += """
350 extern int snprintf(char *str, size_t size, const char *format, ...);
351 typedef int32_t ssize_t;
352 ssize_t write(int fd, const void *buf, size_t count);
353 #define DEBUG_PRINT(...) do { \\
354 char debug_str[1024]; \\
355 int s_len = snprintf(debug_str, 1023, __VA_ARGS__); \\
356 write(2, debug_str, s_len); \\
359 // Always run a, then assert it is true:
360 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
361 // Assert a is true or do nothing
362 #define CHECK(a) DO_ASSERT(a)
364 // Running a leak check across all the allocations and frees of the JDK is a mess,
365 // so instead we implement our own naive leak checker here, relying on the -wrap
366 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
367 // and free'd in Rust or C across the generated bindings shared library.
370 typedef struct allocation {
371 struct allocation* next;
373 const char* struct_name;
376 static allocation* allocation_ll = NULL;
377 static allocation* freed_ll = NULL;
379 extern void* __real_malloc(size_t len);
380 extern void* __real_calloc(size_t nmemb, size_t len);
381 extern void* __real_aligned_alloc(size_t alignment, size_t size);
382 static void new_allocation(void* res, const char* struct_name, int lineno) {
383 allocation* new_alloc = __real_malloc(sizeof(allocation));
384 new_alloc->ptr = res;
385 new_alloc->struct_name = struct_name;
386 new_alloc->next = allocation_ll;
387 new_alloc->lineno = lineno;
388 allocation_ll = new_alloc;
390 static void* do_MALLOC(size_t len, const char* struct_name, int lineno) {
391 void* res = __real_malloc(len);
392 new_allocation(res, struct_name, lineno);
395 #define MALLOC(len, struct_name) do_MALLOC(len, struct_name, __LINE__)
397 void __real_free(void* ptr);
398 static void alloc_freed(void* ptr, int lineno) {
399 allocation* p = NULL;
400 allocation* it = allocation_ll;
401 while (it->ptr != ptr) {
402 p = it; it = it->next;
406 while (it && it->ptr != ptr) { p = it; it = it->next; }
408 DEBUG_PRINT("Tried to free unknown pointer %p at line %d.\\n", ptr, lineno);
410 DEBUG_PRINT("Tried to free unknown pointer %p at line %d.\\n Possibly double-free from %s, allocated on line %d.", ptr, lineno, it->struct_name, it->lineno);
415 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
416 DO_ASSERT(it->ptr == ptr);
420 static void do_FREE(void* ptr, int lineno) {
421 if ((unsigned long)ptr <= 4096) return; // Rust loves to create pointers to the NULL page for dummys
422 alloc_freed(ptr, lineno);
425 #define FREE(ptr) do_FREE(ptr, __LINE__)
427 static void CHECK_ACCESS(const void* ptr) {
428 allocation* it = allocation_ll;
429 while (it->ptr != ptr) {
432 return; // addrsan should catch malloc-unknown and print more info than we have
436 #define CHECK_INNER_FIELD_ACCESS_OR_NULL(v) \\
437 if (v.is_owned && v.inner != NULL) { \\
438 const void *p = __unmangle_inner_ptr(v.inner); \\
444 void* __wrap_malloc(size_t len) {
445 void* res = __real_malloc(len);
446 new_allocation(res, "malloc call", 0);
449 void* __wrap_calloc(size_t nmemb, size_t len) {
450 void* res = __real_calloc(nmemb, len);
451 new_allocation(res, "calloc call", 0);
454 void* __wrap_aligned_alloc(size_t alignment, size_t size) {
455 void* res = __real_aligned_alloc(alignment, size);
456 new_allocation(res, "aligned_alloc call", 0);
459 void __wrap_free(void* ptr) {
460 if (ptr == NULL) return;
465 void* __real_realloc(void* ptr, size_t newlen);
466 void* __wrap_realloc(void* ptr, size_t len) {
467 if (ptr != NULL) alloc_freed(ptr, 0);
468 void* res = __real_realloc(ptr, len);
469 new_allocation(res, "realloc call", 0);
472 void __wrap_reallocarray(void* ptr, size_t new_sz) {
473 // Rust doesn't seem to use reallocarray currently
477 uint32_t __attribute__((export_name("TS_allocs_remaining"))) allocs_remaining() {
479 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
484 void __attribute__((export_name("TS_print_leaks"))) print_leaks() {
485 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
486 DEBUG_PRINT("%s %p remains. Allocated on line %d\\n", a->struct_name, a->ptr, a->lineno);
490 self.c_file_pfx = self.c_file_pfx + """
491 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
492 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
493 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
494 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
496 _Static_assert(sizeof(void*) == 4, "Pointers mut be 32 bits");
498 #define DECL_ARR_TYPE(ty, name) \\
499 struct name##array { \\
503 typedef struct name##array * name##Array; \\
504 static inline name##Array init_##name##Array(size_t arr_len, int lineno) { \\
505 name##Array arr = (name##Array)do_MALLOC(arr_len * sizeof(ty) + sizeof(uint32_t), #name" array init", lineno); \\
506 arr->arr_len = arr_len; \\
510 DECL_ARR_TYPE(int64_t, int64_t);
511 DECL_ARR_TYPE(int8_t, int8_t);
512 DECL_ARR_TYPE(uint32_t, uint32_t);
513 DECL_ARR_TYPE(void*, ptr);
514 DECL_ARR_TYPE(char, char);
515 typedef charArray jstring;
517 static inline jstring str_ref_to_ts(const char* chars, size_t len) {
518 charArray arr = init_charArray(len, __LINE__);
519 memcpy(arr->elems, chars, len);
522 static inline LDKStr str_ref_to_owned_c(const jstring str) {
523 char* newchars = MALLOC(str->arr_len + 1, "String chars");
524 memcpy(newchars, str->elems, str->arr_len);
525 newchars[str->arr_len] = 0;
529 .chars_is_owned = true
534 typedef bool jboolean;
536 uint32_t __attribute__((export_name("TS_malloc"))) TS_malloc(uint32_t size) {
537 return (uint32_t)MALLOC(size, "JS-Called malloc");
539 void __attribute__((export_name("TS_free"))) TS_free(uint32_t ptr) {
543 jstring __attribute__((export_name("TS_get_ldk_c_bindings_version"))) TS_get_ldk_c_bindings_version() {
544 const char *res = check_get_ldk_bindings_version();
545 if (res == NULL) return NULL;
546 return str_ref_to_ts(res, strlen(res));
548 jstring __attribute__((export_name("TS_get_ldk_version"))) get_ldk_version() {
549 const char *res = check_get_ldk_version();
550 if (res == NULL) return NULL;
551 return str_ref_to_ts(res, strlen(res));
556 self.c_version_file = """jstring __attribute__((export_name("TS_get_lib_version_string"))) TS_get_lib_version_string() {
557 return str_ref_to_ts("<git_version_ldk_garbagecollected>", strlen("<git_version_ldk_garbagecollected>"));
560 self.hu_struct_file_prefix = """
561 import CommonBase from './CommonBase.mjs';
562 import * as bindings from '../bindings.mjs'
565 self.util_fn_pfx = self.hu_struct_file_prefix + "\nexport class UtilMethods extends CommonBase {\n"
566 self.util_fn_sfx = "}"
567 self.c_fn_ty_pfx = ""
568 self.file_ext = ".mts"
569 self.ptr_c_ty = "uint32_t"
570 self.ptr_native_ty = "number"
571 self.result_c_ty = "uint32_t"
572 self.ptr_arr = "ptrArray"
573 self.is_arr_some_check = ("", " != 0")
574 self.get_native_arr_len_call = ("", "->arr_len")
576 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
578 def create_native_arr_call(self, arr_len, ty_info):
579 if ty_info.c_ty == "ptrArray":
580 assert ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array")
581 return "init_" + ty_info.c_ty + "(" + arr_len + ", __LINE__)"
582 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
583 if ty_info.c_ty == "int8_tArray":
584 return ("memcpy(" + arr_name + "->elems, ", ", " + arr_len + ")")
587 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
588 if ty_info.c_ty == "int8_tArray":
590 return "memcpy(" + dest_name + ", " + arr_name + "->elems, " + arr_len + ")"
591 if ty_info.c_ty == "ptrArray":
592 return "(void*) " + arr_name + "->elems"
595 return arr_name + "->elems"
596 def get_native_arr_elem(self, arr_name, idxc, ty_info):
597 assert False # Only called if above is None
598 def get_native_arr_ptr_call(self, ty_info):
599 if ty_info.subty is not None:
600 return "(" + ty_info.subty.c_ty + "*)(((uint8_t*)", ") + 4)"
601 return "(" + ty_info.c_ty + "*)(((uint8_t*)", ") + 4)"
602 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
604 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
605 if ty_info.c_ty == "int8_tArray":
610 def map_hu_array_elems(self, arr_name, conv_name, arr_ty, elem_ty):
611 assert elem_ty.c_ty == "uint32_t" or elem_ty.c_ty.endswith("Array")
612 return arr_name + " != null ? " + arr_name + ".map(" + conv_name + " => " + elem_ty.from_hu_conv[0] + ") : null"
614 def str_ref_to_native_call(self, var_name, str_len):
615 return "str_ref_to_ts(" + var_name + ", " + str_len + ")"
616 def str_ref_to_c_call(self, var_name):
617 return "str_ref_to_owned_c(" + var_name + ")"
618 def str_to_hu_conv(self, var_name):
619 return "const " + var_name + "_conv: string = bindings.decodeString(" + var_name + ");"
620 def str_from_hu_conv(self, var_name):
621 return ("bindings.encodeString(" + var_name + ")", "")
623 def c_fn_name_define_pfx(self, fn_name, have_args):
624 return " __attribute__((export_name(\"TS_" + fn_name + "\"))) TS_" + fn_name + "("
629 def get_java_arr_len(self, arr_name):
630 return "bindings.getArrayLength(" + arr_name + ")"
631 def get_java_arr_elem(self, elem_ty, arr_name, idx):
632 if elem_ty.c_ty == "uint32_t" or elem_ty.c_ty == "uintptr_t" or elem_ty.c_ty.endswith("Array"):
633 return "bindings.getU32ArrayElem(" + arr_name + ", " + idx + ")"
636 def constr_hu_array(self, ty_info, arr_len):
637 return "new Array(" + arr_len + ").fill(null)"
639 def primitive_arr_from_hu(self, mapped_ty, fixed_len, arr_name):
641 if fixed_len is not None:
642 assert mapped_ty.c_ty == "int8_t"
643 inner = "bindings.check_arr_len(" + arr_name + ", " + fixed_len + ")"
644 if mapped_ty.c_ty.endswith("Array"):
645 return ("bindings.encodeUint32Array(" + inner + ")", "")
646 elif mapped_ty.c_ty == "uint8_t" or mapped_ty.c_ty == "int8_t":
647 return ("bindings.encodeUint8Array(" + inner + ")", "")
648 elif mapped_ty.c_ty == "uint32_t":
649 return ("bindings.encodeUint32Array(" + inner + ")", "")
650 elif mapped_ty.c_ty == "int64_t":
651 return ("bindings.encodeUint64Array(" + inner + ")", "")
653 print(mapped_ty.c_ty)
656 def primitive_arr_to_hu(self, mapped_ty, fixed_len, arr_name, conv_name):
657 assert mapped_ty.c_ty == "uint8_t" or mapped_ty.c_ty == "int8_t"
658 return "const " + conv_name + ": Uint8Array = bindings.decodeUint8Array(" + arr_name + ");"
660 def var_decl_statement(self, ty_string, var_name, statement):
661 return "const " + var_name + ": " + ty_string + " = " + statement
663 def java_arr_ty_str(self, elem_ty_str):
666 def for_n_in_range(self, n, minimum, maximum):
667 return "for (var " + n + " = " + minimum + "; " + n + " < " + maximum + "; " + n + "++) {"
668 def for_n_in_arr(self, n, arr_name, arr_elem_ty):
669 return (arr_name + ".forEach((" + n + ": " + arr_elem_ty.java_hu_ty + ") => { ", " })")
671 def get_ptr(self, var):
672 return "CommonBase.get_ptr_of(" + var + ")"
673 def set_null_skip_free(self, var):
674 return "CommonBase.set_null_skip_free(" + var + ");"
676 def add_ref(self, holder, referent):
677 return "CommonBase.add_ref_from(" + holder + ", " + referent + ")"
679 def obj_defined(self, struct_names, folder):
680 with open(self.outdir + "/index.mts", 'a') as index:
681 index.write(f"export * from './{folder}/{struct_names[0]}.mjs';\n")
682 with open(self.outdir + "/imports.mts.part", 'a') as imports:
683 imports.write(f"import {{ {', '.join(struct_names)} }} from '../{folder}/{struct_names[0]}.mjs';\n")
685 def native_c_unitary_enum_map(self, struct_name, variants, enum_doc_comment):
686 out_c = "static inline LDK" + struct_name + " LDK" + struct_name + "_from_js(int32_t ord) {\n"
687 out_c = out_c + "\tswitch (ord) {\n"
690 out_typescript_enum_fields = ""
692 for var, var_docs in variants:
693 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
695 if var_docs is not None:
696 var_docs_repld = var_docs.replace("\n", "\n\t")
697 out_typescript_enum_fields += f"/**\n\t * {var_docs_repld}\n\t */\n"
698 out_typescript_enum_fields += f"\t{var},\n\t"
699 out_c = out_c + "\t}\n"
700 out_c = out_c + "\tabort();\n"
701 out_c = out_c + "}\n"
703 out_c = out_c + "static inline int32_t LDK" + struct_name + "_to_js(LDK" + struct_name + " val) {\n"
704 out_c = out_c + "\tswitch (val) {\n"
706 for var, _ in variants:
707 out_c = out_c + "\t\tcase " + var + ": return %d;\n" % ord_v
709 out_c = out_c + "\t\tdefault: abort();\n"
710 out_c = out_c + "\t}\n"
711 out_c = out_c + "}\n"
713 out_typescript = f"""
715 export enum {struct_name} {{
716 {out_typescript_enum_fields}
719 out_typescript_enum = f"export {{ {struct_name} }} from \"../bindings.mjs\";"
720 self.obj_defined([struct_name], "enums")
721 return (out_c, out_typescript_enum, out_typescript)
723 def c_unitary_enum_to_native_call(self, ty_info):
724 return (ty_info.rust_obj + "_to_js(", ")")
725 def native_unitary_enum_to_c_call(self, ty_info):
726 return (ty_info.rust_obj + "_from_js(", ")")
728 def native_c_map_trait(self, struct_name, field_var_conversions, flattened_field_var_conversions, field_function_lines, trait_doc_comment):
729 out_typescript_bindings = ""
730 super_instantiator = ""
731 bindings_instantiator = ""
732 pointer_to_adder = ""
733 impl_constructor_arguments = ""
734 for var in flattened_field_var_conversions:
735 if isinstance(var, ConvInfo):
736 impl_constructor_arguments += f", {var.arg_name}: {var.java_hu_ty}"
737 super_instantiator += first_to_lower(var.arg_name) + ", "
738 if var.from_hu_conv is not None:
739 bindings_instantiator += ", " + var.from_hu_conv[0]
740 if var.from_hu_conv[1] != "":
741 pointer_to_adder += "\t\t\t" + var.from_hu_conv[1] + ";\n"
743 bindings_instantiator += ", " + first_to_lower(var.arg_name)
745 bindings_instantiator += ", " + first_to_lower(var[1]) + ".bindings_instance"
746 super_instantiator += first_to_lower(var[1]) + "_impl, "
747 pointer_to_adder += "\t\timpl_holder.held.ptrs_to.push(" + first_to_lower(var[1]) + ");\n"
748 impl_constructor_arguments += f", {first_to_lower(var[1])}_impl: {var[0].replace('LDK', '')}Interface"
750 super_constructor_statements = ""
751 trait_constructor_arguments = ""
752 for var in field_var_conversions:
753 if isinstance(var, ConvInfo):
754 trait_constructor_arguments += ", " + var.arg_name
756 super_constructor_statements += "\t\tconst " + first_to_lower(var[1]) + " = " + var[1] + ".new_impl(" + super_instantiator + ");\n"
757 trait_constructor_arguments += ", " + first_to_lower(var[1]) + ".bindings_instance"
758 for suparg in var[2]:
759 if isinstance(suparg, ConvInfo):
760 trait_constructor_arguments += ", " + suparg.arg_name
762 trait_constructor_arguments += ", " + suparg[1]
764 # BUILD INTERFACE METHODS
765 out_java_interface = ""
766 out_interface_implementation_overrides = ""
768 for fn_line in field_function_lines:
769 java_method_descriptor = ""
770 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
771 out_java_interface += "\t" + fn_line.fn_name + "("
772 out_interface_implementation_overrides += f"\t\t\t{fn_line.fn_name} ("
774 for idx, arg_conv_info in enumerate(fn_line.args_ty):
776 out_java_interface += ", "
777 out_interface_implementation_overrides += ", "
778 out_java_interface += f"{arg_conv_info.arg_name}: {arg_conv_info.java_hu_ty}"
779 out_interface_implementation_overrides += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
780 java_method_descriptor += arg_conv_info.java_fn_ty_arg
781 out_java_interface += f"): {fn_line.ret_ty_info.java_hu_ty};\n"
782 java_method_descriptor += ")" + fn_line.ret_ty_info.java_fn_ty_arg
783 java_methods.append((fn_line.fn_name, java_method_descriptor))
785 out_interface_implementation_overrides += f"): {fn_line.ret_ty_info.java_ty} {{\n"
787 for arg_info in fn_line.args_ty:
788 if arg_info.to_hu_conv is not None:
789 out_interface_implementation_overrides += "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
791 if fn_line.ret_ty_info.java_ty != "void":
792 out_interface_implementation_overrides += "\t\t\t\tconst ret: " + fn_line.ret_ty_info.java_hu_ty + " = arg." + fn_line.fn_name + "("
794 out_interface_implementation_overrides += f"\t\t\t\targ." + fn_line.fn_name + "("
796 for idx, arg_info in enumerate(fn_line.args_ty):
798 out_interface_implementation_overrides += ", "
799 if arg_info.to_hu_conv_name is not None:
800 out_interface_implementation_overrides += arg_info.to_hu_conv_name
802 out_interface_implementation_overrides += arg_info.arg_name
804 out_interface_implementation_overrides += ");\n"
805 if fn_line.ret_ty_info.java_ty != "void":
806 if fn_line.ret_ty_info.from_hu_conv is not None:
807 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"
808 if fn_line.ret_ty_info.from_hu_conv[1] != "":
809 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"
810 #if fn_line.ret_ty_info.rust_obj in result_types:
811 # XXX: We need to handle this in conversion logic so that its cross-language!
812 # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead
813 # out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\tret.ptr = 0;\n"
814 out_interface_implementation_overrides += "\t\t\t\treturn result;\n"
816 out_interface_implementation_overrides += "\t\t\t\treturn ret;\n"
817 out_interface_implementation_overrides += f"\t\t\t}},\n"
819 out_typescript_human = f"""
820 {self.hu_struct_file_prefix}
822 export interface {struct_name.replace("LDK", "")}Interface {{
823 {out_java_interface}}}
825 class {struct_name}Holder {{
826 held: {struct_name.replace("LDK", "")};
829 export class {struct_name.replace("LDK","")} extends CommonBase {{
831 public bindings_instance?: bindings.{struct_name};
834 constructor(_dummy: object, ptr: number) {{
835 super(ptr, bindings.{struct_name.replace("LDK","")}_free);
836 this.bindings_instance = null;
839 static new_impl(arg: {struct_name.replace("LDK", "")}Interface{impl_constructor_arguments}): {struct_name.replace("LDK", "")} {{
840 const impl_holder: {struct_name}Holder = new {struct_name}Holder();
841 let structImplementation = {{
842 {out_interface_implementation_overrides} }} as bindings.{struct_name};
843 {super_constructor_statements} const ptr: number = bindings.{struct_name}_new(structImplementation{bindings_instantiator});
845 impl_holder.held = new {struct_name.replace("LDK", "")}(null, ptr);
846 impl_holder.held.bindings_instance = structImplementation;
847 {pointer_to_adder} return impl_holder.held;
850 self.obj_defined([struct_name.replace("LDK", ""), struct_name.replace("LDK", "") + "Interface"], "structs")
852 out_typescript_bindings += "/* @internal */\nexport interface " + struct_name + " {\n"
854 for fn_line in field_function_lines:
855 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
856 out_typescript_bindings += f"\t{fn_line.fn_name} ("
858 for idx, arg_conv_info in enumerate(fn_line.args_ty):
860 out_typescript_bindings = out_typescript_bindings + ", "
861 out_typescript_bindings += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
863 out_typescript_bindings += f"): {fn_line.ret_ty_info.java_ty};\n"
865 out_typescript_bindings += "}\n\n"
867 out_typescript_bindings += f"/* @internal */\nexport function {struct_name}_new(impl: {struct_name}"
868 for var in flattened_field_var_conversions:
869 if isinstance(var, ConvInfo):
870 out_typescript_bindings += f", {var.arg_name}: {var.java_ty}"
872 out_typescript_bindings += f", {var[1]}: {var[0]}"
874 out_typescript_bindings += f"""): number {{
875 if(!isWasmInitialized) {{
876 throw new Error("initializeWasm() must be awaited first!");
878 var new_obj_idx = js_objs.length;
879 for (var i = 0; i < js_objs.length; i++) {{
880 if (js_objs[i] == null || js_objs[i] == undefined) {{ new_obj_idx = i; break; }}
882 js_objs[i] = new WeakRef(impl);
883 return wasm.TS_{struct_name}_new(i);
887 # Now that we've written out our java code (and created java_meths), generate C
888 out_c = "typedef struct " + struct_name + "_JCalls {\n"
889 out_c += "\tatomic_size_t refcnt;\n"
890 out_c += "\tuint32_t instance_ptr;\n"
891 for var in flattened_field_var_conversions:
892 if isinstance(var, ConvInfo):
893 # We're a regular ol' field
897 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
898 out_c = out_c + "} " + struct_name + "_JCalls;\n"
900 for fn_line in field_function_lines:
901 if fn_line.fn_name == "free":
902 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
903 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
904 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
905 out_c = out_c + "\t\tFREE(j_calls);\n"
906 out_c = out_c + "\t}\n}\n"
908 for idx, fn_line in enumerate(field_function_lines):
909 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
910 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
911 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_" + struct_name + "_jcall("
912 if fn_line.self_is_const:
913 out_c = out_c + "const void* this_arg"
915 out_c = out_c + "void* this_arg"
917 for idx, arg in enumerate(fn_line.args_ty):
918 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
920 out_c = out_c + ") {\n"
921 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
923 for arg_info in fn_line.args_ty:
924 if arg_info.ret_conv is not None:
925 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
926 out_c = out_c + arg_info.arg_name
927 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
929 if fn_line.ret_ty_info.c_ty.endswith("Array"):
930 out_c += "\t" + fn_line.ret_ty_info.c_ty + " ret = (" + fn_line.ret_ty_info.c_ty + ")"
931 out_c += "js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
932 elif fn_line.ret_ty_info.java_ty == "void":
933 out_c = out_c + "\tjs_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
934 elif fn_line.ret_ty_info.java_hu_ty == "string":
935 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)
936 elif not fn_line.ret_ty_info.passed_as_ptr:
937 out_c = out_c + "\treturn js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
939 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)
941 self.function_ptrs[self.function_ptr_counter] = (struct_name, fn_line.fn_name)
942 self.function_ptr_counter += 1
944 for idx, arg_info in enumerate(fn_line.args_ty):
945 if arg_info.ret_conv is not None:
946 out_c = out_c + ", (uint32_t)" + arg_info.ret_conv_name
948 out_c = out_c + ", (uint32_t)" + arg_info.arg_name
949 out_c = out_c + ");\n"
950 if fn_line.ret_ty_info.arg_conv is not None:
951 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"
953 out_c = out_c + "}\n"
955 # Write out a clone function whether we need one or not, as we use them in moving to rust
956 out_c = out_c + "static void " + struct_name + "_JCalls_cloned(" + struct_name + "* new_obj) {\n"
957 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) new_obj->this_arg;\n"
958 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
959 for var in field_var_conversions:
960 if not isinstance(var, ConvInfo):
961 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
962 out_c = out_c + "}\n"
964 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (JSValue o"
965 for var in flattened_field_var_conversions:
966 if isinstance(var, ConvInfo):
967 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
969 out_c = out_c + ", JSValue " + var[1]
970 out_c = out_c + ") {\n"
972 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
973 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
974 out_c = out_c + "\tcalls->instance_ptr = o;\n"
976 for (fn_name, java_meth_descr) in java_meths:
977 if fn_name != "free" and fn_name != "cloned":
978 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
979 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
981 for var in flattened_field_var_conversions:
982 if isinstance(var, ConvInfo) and var.arg_conv is not None:
983 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
984 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
985 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
986 for fn_line in field_function_lines:
987 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
988 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_" + struct_name + "_jcall,\n"
989 elif fn_line.fn_name == "free":
990 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
992 out_c = out_c + "\t\t.cloned = " + struct_name + "_JCalls_cloned,\n"
993 for var in field_var_conversions:
994 if isinstance(var, ConvInfo):
995 if var.arg_conv_name is not None:
996 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
997 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
999 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
1000 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
1002 out_c += "\t\t." + var[1] + " = " + var[0] + "_init(" + var[1]
1003 for suparg in var[2]:
1004 if isinstance(suparg, ConvInfo):
1005 out_c += ", " + suparg.arg_name
1007 out_c += ", " + suparg[1]
1009 out_c = out_c + "\t};\n"
1010 for var in flattened_field_var_conversions:
1011 if not isinstance(var, ConvInfo):
1012 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
1013 out_c = out_c + "\treturn ret;\n"
1014 out_c = out_c + "}\n"
1016 out_c = out_c + self.c_fn_ty_pfx + "long " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "JSValue o"
1017 for var in flattened_field_var_conversions:
1018 if isinstance(var, ConvInfo):
1019 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
1021 out_c = out_c + ", JSValue " + var[1]
1022 out_c = out_c + ") {\n"
1023 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
1024 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(o"
1025 for var in flattened_field_var_conversions:
1026 if isinstance(var, ConvInfo):
1027 out_c = out_c + ", " + var.arg_name
1029 out_c = out_c + ", " + var[1]
1030 out_c = out_c + ");\n"
1031 out_c = out_c + "\treturn (long)res_ptr;\n"
1032 out_c = out_c + "}\n"
1034 return (out_typescript_bindings, out_typescript_human, out_c)
1036 def trait_struct_inc_refcnt(self, ty_info):
1039 def map_complex_enum(self, struct_name, variant_list, camel_to_snake, enum_doc_comment):
1040 bindings_type = struct_name.replace("LDK", "")
1041 java_hu_type = struct_name.replace("LDK", "").replace("COption", "Option")
1047 out_java_enum += (self.hu_struct_file_prefix)
1050 java_hu_class += "export class " + java_hu_type + " extends CommonBase {\n"
1051 java_hu_class += "\tprotected constructor(_dummy: object, ptr: number) { super(ptr, bindings." + bindings_type + "_free); }\n"
1052 java_hu_class += "\t/* @internal */\n"
1053 java_hu_class += f"\tpublic static constr_from_ptr(ptr: number): {java_hu_type} {{\n"
1054 java_hu_class += f"\t\tconst raw_ty: number = bindings." + struct_name + "_ty_from_ptr(ptr);\n"
1055 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"
1056 out_c += "\t" + struct_name + " *obj = (" + struct_name + "*)(ptr & ~1);\n"
1057 out_c += "\tswitch(obj->tag) {\n"
1058 java_hu_class += "\t\tswitch (raw_ty) {\n"
1059 java_hu_subclasses = ""
1061 out_java += "/* @internal */\nexport class " + struct_name + " {\n"
1062 out_java += "\tprotected constructor() {}\n"
1064 for var in variant_list:
1065 java_hu_subclasses = java_hu_subclasses + "export class " + java_hu_type + "_" + var.var_name + " extends " + java_hu_type + " {\n"
1066 java_hu_class += f"\t\t\tcase {var_idx}: "
1067 java_hu_class += "return new " + java_hu_type + "_" + var.var_name + "(ptr);\n"
1068 out_c += f"\t\tcase {struct_name}_{var.var_name}: return {var_idx};\n"
1070 for idx, (field_ty, field_docs) in enumerate(var.fields):
1071 java_hu_subclasses = java_hu_subclasses + "\tpublic " + field_ty.arg_name + f": {field_ty.java_hu_ty};\n"
1072 if field_ty.to_hu_conv is not None:
1073 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"
1074 hu_conv_body += f"\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
1075 hu_conv_body += f"\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
1077 hu_conv_body += f"\t\tthis.{field_ty.arg_name} = bindings.{struct_name}_{var.var_name}_get_{field_ty.arg_name}(ptr);\n"
1078 java_hu_subclasses += "\t/* @internal */\n"
1079 java_hu_subclasses += "\tpublic constructor(ptr: number) {\n\t\tsuper(null, ptr);\n"
1080 java_hu_subclasses = java_hu_subclasses + hu_conv_body
1081 java_hu_subclasses = java_hu_subclasses + "\t}\n}\n"
1084 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"
1085 out_java += self.fn_call_body(struct_name + "_ty_from_ptr", "uint32_t", "number", "ptr: number", "ptr")
1086 out_c += ("\t\tdefault: abort();\n")
1087 out_c += ("\t}\n}\n")
1089 for var in variant_list:
1090 for idx, (field_map, _) in enumerate(var.fields):
1091 fn_name = f"{struct_name}_{var.var_name}_get_{field_map.arg_name}"
1092 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"
1093 out_c += "\t" + struct_name + " *obj = (" + struct_name + "*)(ptr & ~1);\n"
1094 out_c += f"\tassert(obj->tag == {struct_name}_{var.var_name});\n"
1095 if field_map.ret_conv is not None:
1096 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
1097 if var.tuple_variant:
1098 out_c += "obj->" + camel_to_snake(var.var_name)
1100 out_c += "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name
1101 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
1102 out_c += "\treturn " + field_map.ret_conv_name + ";\n"
1104 if var.tuple_variant:
1105 out_c += "\treturn " + "obj->" + camel_to_snake(var.var_name) + ";\n"
1107 out_c += "\treturn " + "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name + ";\n"
1109 out_java += self.fn_call_body(fn_name, field_map.c_ty, field_map.java_ty, "ptr: number", "ptr")
1110 out_java_enum += java_hu_class
1111 self.struct_file_suffixes[java_hu_type] = java_hu_subclasses
1112 self.obj_defined([java_hu_type], "structs")
1113 return (out_java, out_java_enum, out_c)
1115 def map_opaque_struct(self, struct_name, struct_doc_comment):
1116 implementations = ""
1119 hu_name = struct_name.replace("LDKC2Tuple", "TwoTuple").replace("LDKC3Tuple", "ThreeTuple").replace("LDK", "")
1120 out_opaque_struct_human = f"{self.hu_struct_file_prefix}"
1121 if struct_name.startswith("LDKLocked"):
1122 out_opaque_struct_human += "/** XXX: DO NOT USE THIS - it remains locked until the GC runs (if that ever happens */"
1123 out_opaque_struct_human += f"""
1124 export class {hu_name} extends CommonBase {implementations}{{
1126 public constructor(_dummy: object, ptr: number) {{
1127 super(ptr, bindings.{struct_name.replace("LDK","")}_free);
1131 self.obj_defined([hu_name], "structs")
1132 return out_opaque_struct_human
1134 def map_tuple(self, struct_name):
1135 return self.map_opaque_struct(struct_name, "A Tuple")
1137 def map_result(self, struct_name, res_map, err_map):
1138 human_ty = struct_name.replace("LDKCResult", "Result")
1140 suffixes = f"export class {human_ty}_OK extends {human_ty} {{\n"
1141 if res_map.java_hu_ty != "void":
1142 suffixes += "\tpublic res: " + res_map.java_hu_ty + ";\n"
1145 public constructor(_dummy: object, ptr: number) {{
1148 if res_map.java_hu_ty == "void":
1150 elif res_map.to_hu_conv is not None:
1151 suffixes += "\t\tconst res: " + res_map.java_ty + " = bindings." + struct_name.replace("LDK", "") + "_get_ok(ptr);\n"
1152 suffixes += "\t\t" + res_map.to_hu_conv.replace("\n", "\n\t\t")
1153 suffixes += "\n\t\tthis.res = " + res_map.to_hu_conv_name + ";\n"
1155 suffixes += "\t\tthis.res = bindings." + struct_name.replace("LDK", "") + "_get_ok(ptr);\n"
1156 suffixes += "\t}\n}\n"
1158 suffixes += f"export class {human_ty}_Err extends {human_ty} {{\n"
1159 if err_map.java_hu_ty != "void":
1160 suffixes += "\tpublic err: " + err_map.java_hu_ty + ";\n"
1163 public constructor(_dummy: object, ptr: number) {{
1166 if err_map.java_hu_ty == "void":
1168 elif err_map.to_hu_conv is not None:
1169 suffixes += "\t\tconst err: " + err_map.java_ty + " = bindings." + struct_name.replace("LDK", "") + "_get_err(ptr);\n"
1170 suffixes += "\t\t" + err_map.to_hu_conv.replace("\n", "\n\t\t")
1171 suffixes += "\n\t\tthis.err = " + err_map.to_hu_conv_name + ";\n"
1173 suffixes += "\t\tthis.err = bindings." + struct_name.replace("LDK", "") + "_get_err(ptr);\n"
1174 suffixes += "\t}\n}"
1176 self.struct_file_suffixes[human_ty] = suffixes
1177 self.obj_defined([human_ty], "structs")
1179 return f"""{self.hu_struct_file_prefix}
1181 export class {human_ty} extends CommonBase {{
1182 protected constructor(_dummy: object, ptr: number) {{
1183 super(ptr, bindings.{struct_name.replace("LDK","")}_free);
1186 public static constr_from_ptr(ptr: number): {human_ty} {{
1187 if (bindings.{struct_name.replace("LDK", "")}_is_ok(ptr)) {{
1188 return new {human_ty}_OK(null, ptr);
1190 return new {human_ty}_Err(null, ptr);
1195 def fn_call_body(self, method_name, return_c_ty, return_java_ty, method_argument_string, native_call_argument_string):
1196 has_return_value = return_c_ty != 'void'
1197 return_statement = 'return nativeResponseValue;'
1198 if not has_return_value:
1199 return_statement = '// debug statements here'
1201 return f"""/* @internal */
1202 export function {method_name}({method_argument_string}): {return_java_ty} {{
1203 if(!isWasmInitialized) {{
1204 throw new Error("initializeWasm() must be awaited first!");
1206 const nativeResponseValue = wasm.TS_{method_name}({native_call_argument_string});
1210 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):
1213 out_java_struct = None
1216 out_c += (self.c_fn_ty_pfx)
1217 out_c += (return_type_info.c_ty)
1218 out_java += (return_type_info.java_ty)
1219 if return_type_info.ret_conv is not None:
1220 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
1221 out_java += (" " + method_name + "(")
1222 out_c += (" " + self.c_fn_name_define_pfx(method_name, True))
1224 method_argument_string = ""
1225 native_call_argument_string = ""
1226 for idx, arg_conv_info in enumerate(argument_types):
1228 method_argument_string += (", ")
1229 native_call_argument_string += ', '
1231 if arg_conv_info.c_ty != "void":
1232 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
1233 method_argument_string += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
1234 native_call_argument_string += arg_conv_info.arg_name
1235 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)
1237 out_java_struct = ""
1239 out_java_struct += ("\t// Skipped " + method_name + "\n")
1242 out_java_struct += (
1243 "\tpublic static constructor_" + meth_n + "(")
1245 out_java_struct += ("\tpublic " + meth_n + "(")
1246 for idx, arg in enumerate(argument_types):
1248 if not takes_self or idx > 1:
1249 out_java_struct += (", ")
1252 if arg.java_ty != "void":
1253 if arg.arg_name in default_constructor_args:
1254 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
1255 if explode_idx != 0:
1256 out_java_struct += (", ")
1257 out_java_struct += arg.arg_name + "_" + explode_arg.arg_name + ": " + explode_arg.java_hu_ty
1259 out_java_struct += arg.arg_name + ": " + arg.java_hu_ty
1262 if out_java_struct is not None:
1263 out_java_struct += "): " + return_type_info.java_hu_ty + " {\n"
1264 for info in argument_types:
1265 if info.arg_conv is not None:
1266 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
1267 if return_type_info.ret_conv is not None:
1268 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
1269 elif return_type_info.c_ty != "void":
1270 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
1273 if c_call_string is None:
1274 out_c += (method_name + "(")
1276 out_c += (c_call_string)
1277 for idx, info in enumerate(argument_types):
1278 if info.arg_conv_name is not None:
1281 elif c_call_string is not None:
1283 out_c += (info.arg_conv_name)
1285 if return_type_info.ret_conv is not None:
1286 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
1289 for info in argument_types:
1290 if info.arg_conv_cleanup is not None:
1291 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
1292 if return_type_info.ret_conv is not None:
1293 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
1294 elif return_type_info.c_ty != "void":
1295 out_c += ("\n\treturn ret_val;")
1296 out_c += ("\n}\n\n")
1299 out_java_struct += ("\t\t")
1300 if return_type_info.java_ty != "void":
1301 out_java_struct += "const ret: " + return_type_info.java_ty + " = "
1302 out_java_struct += ("bindings." + method_name + "(")
1303 for idx, info in enumerate(argument_types):
1305 out_java_struct += (", ")
1306 if idx == 0 and takes_self:
1307 out_java_struct += ("this.ptr")
1308 elif info.arg_name in default_constructor_args:
1309 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
1310 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
1311 if explode_idx != 0:
1312 out_java_struct += (", ")
1313 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1314 if explode_arg.from_hu_conv is not None:
1315 out_java_struct += (
1316 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
1318 out_java_struct += (expl_arg_name)
1319 out_java_struct += (")")
1320 elif info.from_hu_conv is not None:
1321 out_java_struct += (info.from_hu_conv[0])
1323 out_java_struct += (info.arg_name)
1324 out_java_struct += (");\n")
1325 if return_type_info.to_hu_conv is not None:
1327 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
1328 return_type_info.to_hu_conv_name) + "\n")
1330 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
1332 for idx, info in enumerate(argument_types):
1333 if idx == 0 and takes_self:
1335 elif info.arg_name in default_constructor_args:
1336 for explode_arg in default_constructor_args[info.arg_name]:
1337 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1338 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
1339 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
1340 expl_arg_name).replace(
1341 "this", return_type_info.to_hu_conv_name) + ";\n")
1342 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
1343 if not takes_self and return_type_info.to_hu_conv_name is not None:
1344 out_java_struct += (
1345 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name).replace("\n", "\n\t\t") + ";\n")
1347 out_java_struct += ("\t\t" + info.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n")
1349 if return_type_info.to_hu_conv_name is not None:
1350 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
1351 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
1352 out_java_struct += ("\t\treturn ret;\n")
1353 out_java_struct += ("\t}\n\n")
1355 return (out_java, out_c, out_java_struct)
1358 for struct in self.struct_file_suffixes:
1359 with open(self.outdir + "/structs/" + struct + self.file_ext, "a") as src:
1360 src.write(self.struct_file_suffixes[struct])
1362 with open(self.outdir + "/bindings.mts", "a") as bindings:
1365 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) {
1366 const weak: WeakRef<object> = js_objs[obj_ptr];
1367 if (weak == null || weak == undefined) {
1368 console.error("Got function call on unknown/free'd JS object!");
1369 throw new Error("Got function call on unknown/free'd JS object!");
1371 const obj: object = weak.deref();
1372 if (obj == null || obj == undefined) {
1373 console.error("Got function call on GC'd JS object!");
1374 throw new Error("Got function call on GC'd JS object!");
1378 bindings.write("\tswitch (fn_id) {\n")
1379 for f in self.function_ptrs:
1380 bindings.write(f"\t\tcase {str(f)}: fn = Object.getOwnPropertyDescriptor(obj, \"{self.function_ptrs[f][1]}\"); break;\n")
1382 bindings.write("""\t\tdefault:
1383 console.error("Got unknown function call from C!");
1384 throw new Error("Got unknown function call from C!");
1386 if (fn == null || fn == undefined) {
1387 console.error("Got function call on incorrect JS object!");
1388 throw new Error("Got function call on incorrect JS object!");
1390 return fn.value.bind(obj)(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10);