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'
295 self.util_fn_pfx = self.hu_struct_file_prefix + "\nexport class UtilMethods extends CommonBase {\n"
296 self.util_fn_sfx = "}"
297 self.c_fn_ty_pfx = ""
298 self.file_ext = ".mts"
299 self.ptr_c_ty = "uint32_t"
300 self.ptr_native_ty = "number"
301 self.result_c_ty = "uint32_t"
302 self.ptr_arr = "ptrArray"
303 self.is_arr_some_check = ("", " != 0")
304 self.get_native_arr_len_call = ("", "->arr_len")
306 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
308 def create_native_arr_call(self, arr_len, ty_info):
309 if ty_info.c_ty == "ptrArray":
310 assert ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array")
311 return "init_" + ty_info.c_ty + "(" + arr_len + ")"
312 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
313 if ty_info.c_ty == "int8_tArray":
314 return ("memcpy(" + arr_name + "->elems, ", ", " + arr_len + ")")
317 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
318 if ty_info.c_ty == "int8_tArray":
320 return "memcpy(" + dest_name + ", " + arr_name + "->elems, " + arr_len + ")"
321 if ty_info.c_ty == "ptrArray":
322 return "(void*) " + arr_name + "->elems"
325 return arr_name + "->elems"
326 def get_native_arr_elem(self, arr_name, idxc, ty_info):
327 assert False # Only called if above is None
328 def get_native_arr_ptr_call(self, ty_info):
329 if ty_info.subty is not None:
330 return "(" + ty_info.subty.c_ty + "*)(((uint8_t*)", ") + 4)"
331 return "(" + ty_info.c_ty + "*)(((uint8_t*)", ") + 4)"
332 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
334 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
335 if ty_info.c_ty == "int8_tArray":
340 def map_hu_array_elems(self, arr_name, conv_name, arr_ty, elem_ty):
341 assert elem_ty.c_ty == "uint32_t" or elem_ty.c_ty.endswith("Array")
342 return arr_name + " != null ? " + arr_name + ".map(" + conv_name + " => " + elem_ty.from_hu_conv[0] + ") : null"
344 def str_ref_to_native_call(self, var_name, str_len):
345 return "str_ref_to_ts(" + var_name + ", " + str_len + ")"
346 def str_ref_to_c_call(self, var_name):
347 return "str_ref_to_owned_c(" + var_name + ")"
348 def str_to_hu_conv(self, var_name):
349 return "const " + var_name + "_conv: string = bindings.decodeString(" + var_name + ");"
350 def str_from_hu_conv(self, var_name):
351 return ("bindings.encodeString(" + var_name + ")", "")
353 def c_fn_name_define_pfx(self, fn_name, have_args):
354 return " __attribute__((export_name(\"TS_" + fn_name + "\"))) TS_" + fn_name + "("
356 def wasm_import_header(self, target):
358 const imports: any = {};
361 var js_objs: Array<WeakRef<object>> = [];
362 var js_invoke: Function;
364 imports.wasi_snapshot_preview1 = {
365 "fd_write": (fd: number, iovec_array_ptr: number, iovec_array_len: number) => {
366 // This should generally only be used to print panic messages
367 console.log("FD_WRITE to " + fd + " in " + iovec_array_len + " chunks.");
368 const ptr_len_view = new Uint32Array(wasm.memory.buffer, iovec_array_ptr, iovec_array_len * 2);
369 for (var i = 0; i < iovec_array_len; i++) {
370 const bytes_view = new Uint8Array(wasm.memory.buffer, ptr_len_view[i*2], ptr_len_view[i*2+1]);
371 console.log(String.fromCharCode(...bytes_view));
375 "random_get": (buf_ptr: number, buf_len: number) => {
376 const buf = new Uint8Array(wasm.memory.buffer, buf_ptr, buf_len);
377 crypto.getRandomValues(buf);
380 "environ_sizes_get": (environ_var_count_ptr: number, environ_len_ptr: number) => {
381 // This is called before fd_write to format + print panic messages
382 console.log("wasi_snapshot_preview1:environ_sizes_get");
383 const out_count_view = new Uint32Array(wasm.memory.buffer, environ_var_count_ptr, 1);
384 out_count_view[0] = 1;
385 const out_len_view = new Uint32Array(wasm.memory.buffer, environ_len_ptr, 1);
386 out_len_view[0] = "RUST_BACKTRACE=1".length + 1; // Note that string must be NULL-terminated
389 "environ_get": (environ_ptr: number, environ_buf_ptr: number) => {
390 // This is called before fd_write to format + print panic messages
391 console.log("wasi_snapshot_preview1:environ_get");
392 const out_ptrs = new Uint32Array(wasm.memory.buffer, environ_ptr, 2);
393 out_ptrs[0] = environ_buf_ptr;
394 out_ptrs[1] = "RUST_BACKTRACE=1".length;
395 const out_environ = new Uint8Array(wasm.memory.buffer, environ_buf_ptr, out_ptrs[1]);
396 for (var i = 0; i < out_ptrs[1]; i++) { out_environ[i] = "RUST_BACKTRACE=1".codePointAt(i); }
397 out_environ[out_ptrs[1]] = 0;
400 "proc_exit" : () => {
401 console.log("wasi_snapshot_preview1:proc_exit");
405 var wasm: any = null;
406 let isWasmInitialized: boolean = false;
409 if target == Target.NODEJS:
410 res += """import * as fs from 'fs';
411 import { webcrypto as crypto } from 'crypto';
412 export async function initializeWasm(path: string) {
413 const source = fs.readFileSync(path);
414 imports.env["js_invoke_function"] = js_invoke;
415 const { instance: wasmInstance } = await WebAssembly.instantiate(source, imports);
416 wasm = wasmInstance.exports;
417 if (!wasm.test_bigint_pass_deadbeef0badf00d(BigInt("0xdeadbeef0badf00d"))) {
418 throw new Error(\"Currently need BigInt-as-u64 support, try ----experimental-wasm-bigint");
420 isWasmInitialized = true;
425 export async function initializeWasm(uri: string) {
426 const stream = fetch(uri);
427 imports.env["js_invoke_function"] = js_invoke;
428 const { instance: wasmInstance } = await WebAssembly.instantiateStreaming(stream, imports);
429 wasm = wasmInstance.exports;
430 if (!wasm.test_bigint_pass_deadbeef0badf00d(BigInt("0xdeadbeef0badf00d"))) {
431 throw new Error(\"Currently need BigInt-as-u64 support, try ----experimental-wasm-bigint");
433 isWasmInitialized = true;
443 const nextMultipleOfFour = (value: number) => {
444 return Math.ceil(value / 4) * 4;
447 export function encodeUint8Array (inputArray: Uint8Array): number {
448 const cArrayPointer = wasm.TS_malloc(inputArray.length + 4);
449 const arrayLengthView = new Uint32Array(wasm.memory.buffer, cArrayPointer, 1);
450 arrayLengthView[0] = inputArray.length;
451 const arrayMemoryView = new Uint8Array(wasm.memory.buffer, cArrayPointer + 4, inputArray.length);
452 arrayMemoryView.set(inputArray);
453 return cArrayPointer;
455 export function encodeUint32Array (inputArray: Uint32Array|Array<number>): number {
456 const cArrayPointer = wasm.TS_malloc((inputArray.length + 1) * 4);
457 const arrayMemoryView = new Uint32Array(wasm.memory.buffer, cArrayPointer, inputArray.length);
458 arrayMemoryView.set(inputArray, 1);
459 arrayMemoryView[0] = inputArray.length;
460 return cArrayPointer;
462 export function encodeUint64Array (inputArray: BigUint64Array|Array<bigint>): number {
463 const cArrayPointer = wasm.TS_malloc(inputArray.length * 8 + 1);
464 const arrayLengthView = new Uint32Array(wasm.memory.buffer, cArrayPointer, 1);
465 arrayLengthView[0] = inputArray.length;
466 const arrayMemoryView = new BigUint64Array(wasm.memory.buffer, cArrayPointer + 4, inputArray.length);
467 arrayMemoryView.set(inputArray);
468 return cArrayPointer;
471 export function check_arr_len(arr: Uint8Array, len: number): Uint8Array {
472 if (arr.length != len) { throw new Error("Expected array of length " + len + "got " + arr.length); }
476 export function getArrayLength(arrayPointer: number): number {
477 const arraySizeViewer = new Uint32Array(wasm.memory.buffer, arrayPointer, 1);
478 return arraySizeViewer[0];
480 export function decodeUint8Array (arrayPointer: number, free = true): Uint8Array {
481 const arraySize = getArrayLength(arrayPointer);
482 const actualArrayViewer = new Uint8Array(wasm.memory.buffer, arrayPointer + 4, arraySize);
483 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
484 // will free the underlying memory when it becomes unreachable instead of copying here.
485 // Note that doing so may have edge-case interactions with memory resizing (invalidating the buffer).
486 const actualArray = actualArrayViewer.slice(0, arraySize);
488 wasm.TS_free(arrayPointer);
492 const decodeUint32Array = (arrayPointer: number, free = true) => {
493 const arraySize = getArrayLength(arrayPointer);
494 const actualArrayViewer = new Uint32Array(
495 wasm.memory.buffer, // value
496 arrayPointer + 4, // offset (ignoring length bytes)
497 arraySize // uint32 count
499 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
500 // will free the underlying memory when it becomes unreachable instead of copying here.
501 const actualArray = actualArrayViewer.slice(0, arraySize);
503 wasm.TS_free(arrayPointer);
508 export function getU32ArrayElem(arrayPointer: number, idx: number): number {
509 const actualArrayViewer = new Uint32Array(wasm.memory.buffer, arrayPointer + 4, idx + 1);
510 return actualArrayViewer[idx];
513 export function encodeString(str: string): number {
514 const charArray = new TextEncoder().encode(str);
515 return encodeUint8Array(charArray);
518 export function decodeString(stringPointer: number, free = true): string {
519 const arraySize = getArrayLength(stringPointer);
520 const memoryView = new Uint8Array(wasm.memory.buffer, stringPointer + 4, arraySize);
521 const result = new TextDecoder("utf-8").decode(memoryView);
524 wasm.TS_free(stringPointer);
534 def get_java_arr_len(self, arr_name):
535 return "bindings.getArrayLength(" + arr_name + ")"
536 def get_java_arr_elem(self, elem_ty, arr_name, idx):
537 if elem_ty.c_ty == "uint32_t" or elem_ty.c_ty == "uintptr_t" or elem_ty.c_ty.endswith("Array"):
538 return "bindings.getU32ArrayElem(" + arr_name + ", " + idx + ")"
541 def constr_hu_array(self, ty_info, arr_len):
542 return "new Array(" + arr_len + ").fill(null)"
544 def primitive_arr_from_hu(self, mapped_ty, fixed_len, arr_name):
546 if fixed_len is not None:
547 assert mapped_ty.c_ty == "int8_t"
548 inner = "bindings.check_arr_len(" + arr_name + ", " + fixed_len + ")"
549 if mapped_ty.c_ty.endswith("Array"):
550 return ("bindings.encodeUint32Array(" + inner + ")", "")
551 elif mapped_ty.c_ty == "uint8_t" or mapped_ty.c_ty == "int8_t":
552 return ("bindings.encodeUint8Array(" + inner + ")", "")
553 elif mapped_ty.c_ty == "uint32_t":
554 return ("bindings.encodeUint32Array(" + inner + ")", "")
555 elif mapped_ty.c_ty == "int64_t":
556 return ("bindings.encodeUint64Array(" + inner + ")", "")
558 print(mapped_ty.c_ty)
561 def primitive_arr_to_hu(self, mapped_ty, fixed_len, arr_name, conv_name):
562 assert mapped_ty.c_ty == "uint8_t" or mapped_ty.c_ty == "int8_t"
563 return "const " + conv_name + ": Uint8Array = bindings.decodeUint8Array(" + arr_name + ");"
565 def var_decl_statement(self, ty_string, var_name, statement):
566 return "const " + var_name + ": " + ty_string + " = " + statement
568 def java_arr_ty_str(self, elem_ty_str):
571 def for_n_in_range(self, n, minimum, maximum):
572 return "for (var " + n + " = " + minimum + "; " + n + " < " + maximum + "; " + n + "++) {"
573 def for_n_in_arr(self, n, arr_name, arr_elem_ty):
574 return (arr_name + ".forEach((" + n + ": " + arr_elem_ty.java_hu_ty + ") => { ", " })")
576 def get_ptr(self, var):
577 return "CommonBase.get_ptr_of(" + var + ")"
578 def set_null_skip_free(self, var):
579 return "CommonBase.set_null_skip_free(" + var + ");"
581 def add_ref(self, holder, referent):
582 return "CommonBase.add_ref_from(" + holder + ", " + referent + ")"
584 def obj_defined(self, struct_names, folder):
585 with open(self.outdir + "/index.mts", 'a') as index:
586 index.write(f"export * from './{folder}/{struct_names[0]}.mjs';\n")
587 with open(self.outdir + "/imports.mts.part", 'a') as imports:
588 imports.write(f"import {{ {', '.join(struct_names)} }} from '../{folder}/{struct_names[0]}.mjs';\n")
590 def native_c_unitary_enum_map(self, struct_name, variants, enum_doc_comment):
591 out_c = "static inline LDK" + struct_name + " LDK" + struct_name + "_from_js(int32_t ord) {\n"
592 out_c = out_c + "\tswitch (ord) {\n"
595 out_typescript_enum_fields = ""
597 for var, var_docs in variants:
598 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
600 if var_docs is not None:
601 out_typescript_enum_fields += f"/**\n * {var_docs}\n */\n"
602 out_typescript_enum_fields += f"{var},\n\t\t\t\t"
603 out_c = out_c + "\t}\n"
604 out_c = out_c + "\tabort();\n"
605 out_c = out_c + "}\n"
607 out_c = out_c + "static inline int32_t LDK" + struct_name + "_to_js(LDK" + struct_name + " val) {\n"
608 out_c = out_c + "\tswitch (val) {\n"
610 for var, _ in variants:
611 out_c = out_c + "\t\tcase " + var + ": return %d;\n" % ord_v
613 out_c = out_c + "\t\tdefault: abort();\n"
614 out_c = out_c + "\t}\n"
615 out_c = out_c + "}\n"
617 out_typescript = f"""
618 export enum {struct_name} {{
619 {out_typescript_enum_fields}
622 out_typescript_enum = f"export {{ {struct_name} }} from \"../bindings.mjs\";"
623 self.obj_defined([struct_name], "enums")
624 return (out_c, out_typescript_enum, out_typescript)
626 def c_unitary_enum_to_native_call(self, ty_info):
627 return (ty_info.rust_obj + "_to_js(", ")")
628 def native_unitary_enum_to_c_call(self, ty_info):
629 return (ty_info.rust_obj + "_from_js(", ")")
631 def native_c_map_trait(self, struct_name, field_var_conversions, flattened_field_var_conversions, field_function_lines, trait_doc_comment):
632 out_typescript_bindings = "\n\n\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: START\n\n"
634 super_instantiator = ""
635 bindings_instantiator = ""
636 pointer_to_adder = ""
637 impl_constructor_arguments = ""
638 for var in flattened_field_var_conversions:
639 if isinstance(var, ConvInfo):
640 impl_constructor_arguments += f", {var.arg_name}: {var.java_hu_ty}"
641 super_instantiator += first_to_lower(var.arg_name) + ", "
642 if var.from_hu_conv is not None:
643 bindings_instantiator += ", " + var.from_hu_conv[0]
644 if var.from_hu_conv[1] != "":
645 pointer_to_adder += "\t\t\t" + var.from_hu_conv[1] + ";\n"
647 bindings_instantiator += ", " + first_to_lower(var.arg_name)
649 bindings_instantiator += ", " + first_to_lower(var[1]) + ".bindings_instance"
650 super_instantiator += first_to_lower(var[1]) + "_impl, "
651 pointer_to_adder += "\t\timpl_holder.held.ptrs_to.push(" + first_to_lower(var[1]) + ");\n"
652 impl_constructor_arguments += f", {first_to_lower(var[1])}_impl: {var[0].replace('LDK', '')}Interface"
654 super_constructor_statements = ""
655 trait_constructor_arguments = ""
656 for var in field_var_conversions:
657 if isinstance(var, ConvInfo):
658 trait_constructor_arguments += ", " + var.arg_name
660 super_constructor_statements += "\t\tconst " + first_to_lower(var[1]) + " = " + var[1] + ".new_impl(" + super_instantiator + ");\n"
661 trait_constructor_arguments += ", " + first_to_lower(var[1]) + ".bindings_instance"
662 for suparg in var[2]:
663 if isinstance(suparg, ConvInfo):
664 trait_constructor_arguments += ", " + suparg.arg_name
666 trait_constructor_arguments += ", " + suparg[1]
668 # BUILD INTERFACE METHODS
669 out_java_interface = ""
670 out_interface_implementation_overrides = ""
672 for fn_line in field_function_lines:
673 java_method_descriptor = ""
674 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
675 out_java_interface += "\t" + fn_line.fn_name + "("
676 out_interface_implementation_overrides += f"\t\t\t{fn_line.fn_name} ("
678 for idx, arg_conv_info in enumerate(fn_line.args_ty):
680 out_java_interface += ", "
681 out_interface_implementation_overrides += ", "
682 out_java_interface += f"{arg_conv_info.arg_name}: {arg_conv_info.java_hu_ty}"
683 out_interface_implementation_overrides += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
684 java_method_descriptor += arg_conv_info.java_fn_ty_arg
685 out_java_interface += f"): {fn_line.ret_ty_info.java_hu_ty};\n"
686 java_method_descriptor += ")" + fn_line.ret_ty_info.java_fn_ty_arg
687 java_methods.append((fn_line.fn_name, java_method_descriptor))
689 out_interface_implementation_overrides += f"): {fn_line.ret_ty_info.java_ty} {{\n"
691 for arg_info in fn_line.args_ty:
692 if arg_info.to_hu_conv is not None:
693 out_interface_implementation_overrides += "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
695 if fn_line.ret_ty_info.java_ty != "void":
696 out_interface_implementation_overrides += "\t\t\t\tconst ret: " + fn_line.ret_ty_info.java_hu_ty + " = arg." + fn_line.fn_name + "("
698 out_interface_implementation_overrides += f"\t\t\t\targ." + fn_line.fn_name + "("
700 for idx, arg_info in enumerate(fn_line.args_ty):
702 out_interface_implementation_overrides += ", "
703 if arg_info.to_hu_conv_name is not None:
704 out_interface_implementation_overrides += arg_info.to_hu_conv_name
706 out_interface_implementation_overrides += arg_info.arg_name
708 out_interface_implementation_overrides += ");\n"
709 if fn_line.ret_ty_info.java_ty != "void":
710 if fn_line.ret_ty_info.from_hu_conv is not None:
711 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"
712 if fn_line.ret_ty_info.from_hu_conv[1] != "":
713 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"
714 #if fn_line.ret_ty_info.rust_obj in result_types:
715 # XXX: We need to handle this in conversion logic so that its cross-language!
716 # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead
717 # out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\tret.ptr = 0;\n"
718 out_interface_implementation_overrides += "\t\t\t\treturn result;\n"
720 out_interface_implementation_overrides += "\t\t\t\treturn ret;\n"
721 out_interface_implementation_overrides += f"\t\t\t}},\n"
723 out_typescript_human = f"""
724 {self.hu_struct_file_prefix}
726 export interface {struct_name.replace("LDK", "")}Interface {{
727 {out_java_interface}}}
729 class {struct_name}Holder {{
730 held: {struct_name.replace("LDK", "")};
733 export class {struct_name.replace("LDK","")} extends CommonBase {{
735 public bindings_instance?: bindings.{struct_name};
738 constructor(_dummy: object, ptr: number) {{
739 super(ptr, bindings.{struct_name.replace("LDK","")}_free);
740 this.bindings_instance = null;
743 static new_impl(arg: {struct_name.replace("LDK", "")}Interface{impl_constructor_arguments}): {struct_name.replace("LDK", "")} {{
744 const impl_holder: {struct_name}Holder = new {struct_name}Holder();
745 let structImplementation = {{
746 {out_interface_implementation_overrides} }} as bindings.{struct_name};
747 {super_constructor_statements} const ptr: number = bindings.{struct_name}_new(structImplementation{bindings_instantiator});
749 impl_holder.held = new {struct_name.replace("LDK", "")}(null, ptr);
750 impl_holder.held.bindings_instance = structImplementation;
751 {pointer_to_adder} return impl_holder.held;
754 self.obj_defined([struct_name.replace("LDK", ""), struct_name.replace("LDK", "") + "Interface"], "structs")
756 out_typescript_bindings += "export interface " + struct_name + " {\n"
758 for fn_line in field_function_lines:
759 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
760 out_typescript_bindings += f"\t{fn_line.fn_name} ("
762 for idx, arg_conv_info in enumerate(fn_line.args_ty):
764 out_typescript_bindings = out_typescript_bindings + ", "
765 out_typescript_bindings += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
767 out_typescript_bindings += f"): {fn_line.ret_ty_info.java_ty};\n"
769 out_typescript_bindings += "}\n\n"
771 out_typescript_bindings += f"export function {struct_name}_new(impl: {struct_name}"
772 for var in flattened_field_var_conversions:
773 if isinstance(var, ConvInfo):
774 out_typescript_bindings += f", {var.arg_name}: {var.java_ty}"
776 out_typescript_bindings += f", {var[1]}: {var[0]}"
778 out_typescript_bindings += f"""): number {{
779 if(!isWasmInitialized) {{
780 throw new Error("initializeWasm() must be awaited first!");
782 var new_obj_idx = js_objs.length;
783 for (var i = 0; i < js_objs.length; i++) {{
784 if (js_objs[i] == null || js_objs[i] == undefined) {{ new_obj_idx = i; break; }}
786 js_objs[i] = new WeakRef(impl);
787 return wasm.TS_{struct_name}_new(i);
791 out_typescript_bindings += '\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: END\n\n\n'
793 # Now that we've written out our java code (and created java_meths), generate C
794 out_c = "typedef struct " + struct_name + "_JCalls {\n"
795 out_c += "\tatomic_size_t refcnt;\n"
796 out_c += "\tuint32_t instance_ptr;\n"
797 for var in flattened_field_var_conversions:
798 if isinstance(var, ConvInfo):
799 # We're a regular ol' field
803 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
804 out_c = out_c + "} " + struct_name + "_JCalls;\n"
806 for fn_line in field_function_lines:
807 if fn_line.fn_name == "free":
808 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
809 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
810 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
811 out_c = out_c + "\t\tFREE(j_calls);\n"
812 out_c = out_c + "\t}\n}\n"
814 for idx, fn_line in enumerate(field_function_lines):
815 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
816 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
817 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_" + struct_name + "_jcall("
818 if fn_line.self_is_const:
819 out_c = out_c + "const void* this_arg"
821 out_c = out_c + "void* this_arg"
823 for idx, arg in enumerate(fn_line.args_ty):
824 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
826 out_c = out_c + ") {\n"
827 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
829 for arg_info in fn_line.args_ty:
830 if arg_info.ret_conv is not None:
831 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
832 out_c = out_c + arg_info.arg_name
833 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
835 if fn_line.ret_ty_info.c_ty.endswith("Array"):
836 out_c += "\t" + fn_line.ret_ty_info.c_ty + " ret = (" + fn_line.ret_ty_info.c_ty + ")"
837 out_c += "js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
838 elif fn_line.ret_ty_info.java_ty == "void":
839 out_c = out_c + "\tjs_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
840 elif fn_line.ret_ty_info.java_hu_ty == "string":
841 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)
842 elif not fn_line.ret_ty_info.passed_as_ptr:
843 out_c = out_c + "\treturn js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->instance_ptr, " + str(self.function_ptr_counter)
845 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)
847 self.function_ptrs[self.function_ptr_counter] = (struct_name, fn_line.fn_name)
848 self.function_ptr_counter += 1
850 for idx, arg_info in enumerate(fn_line.args_ty):
851 if arg_info.ret_conv is not None:
852 out_c = out_c + ", (uint32_t)" + arg_info.ret_conv_name
854 out_c = out_c + ", (uint32_t)" + arg_info.arg_name
855 out_c = out_c + ");\n"
856 if fn_line.ret_ty_info.arg_conv is not None:
857 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"
859 out_c = out_c + "}\n"
861 # Write out a clone function whether we need one or not, as we use them in moving to rust
862 out_c = out_c + "static void " + struct_name + "_JCalls_cloned(" + struct_name + "* new_obj) {\n"
863 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) new_obj->this_arg;\n"
864 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
865 for var in field_var_conversions:
866 if not isinstance(var, ConvInfo):
867 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
868 out_c = out_c + "}\n"
870 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (JSValue o"
871 for var in flattened_field_var_conversions:
872 if isinstance(var, ConvInfo):
873 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
875 out_c = out_c + ", JSValue " + var[1]
876 out_c = out_c + ") {\n"
878 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
879 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
880 out_c = out_c + "\tcalls->instance_ptr = o;\n"
882 for (fn_name, java_meth_descr) in java_meths:
883 if fn_name != "free" and fn_name != "cloned":
884 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
885 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
887 for var in flattened_field_var_conversions:
888 if isinstance(var, ConvInfo) and var.arg_conv is not None:
889 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
890 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
891 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
892 for fn_line in field_function_lines:
893 if fn_line.fn_name != "free" and fn_line.fn_name != "cloned":
894 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_" + struct_name + "_jcall,\n"
895 elif fn_line.fn_name == "free":
896 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
898 out_c = out_c + "\t\t.cloned = " + struct_name + "_JCalls_cloned,\n"
899 for var in field_var_conversions:
900 if isinstance(var, ConvInfo):
901 if var.arg_conv_name is not None:
902 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
903 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
905 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
906 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
908 out_c += "\t\t." + var[1] + " = " + var[0] + "_init(" + var[1]
909 for suparg in var[2]:
910 if isinstance(suparg, ConvInfo):
911 out_c += ", " + suparg.arg_name
913 out_c += ", " + suparg[1]
915 out_c = out_c + "\t};\n"
916 for var in flattened_field_var_conversions:
917 if not isinstance(var, ConvInfo):
918 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
919 out_c = out_c + "\treturn ret;\n"
920 out_c = out_c + "}\n"
922 out_c = out_c + self.c_fn_ty_pfx + "long " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "JSValue o"
923 for var in flattened_field_var_conversions:
924 if isinstance(var, ConvInfo):
925 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
927 out_c = out_c + ", JSValue " + var[1]
928 out_c = out_c + ") {\n"
929 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
930 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(o"
931 for var in flattened_field_var_conversions:
932 if isinstance(var, ConvInfo):
933 out_c = out_c + ", " + var.arg_name
935 out_c = out_c + ", " + var[1]
936 out_c = out_c + ");\n"
937 out_c = out_c + "\treturn (long)res_ptr;\n"
938 out_c = out_c + "}\n"
940 return (out_typescript_bindings, out_typescript_human, out_c)
942 def trait_struct_inc_refcnt(self, ty_info):
945 def map_complex_enum(self, struct_name, variant_list, camel_to_snake, enum_doc_comment):
946 bindings_type = struct_name.replace("LDK", "")
947 java_hu_type = struct_name.replace("LDK", "").replace("COption", "Option")
953 out_java_enum += (self.hu_struct_file_prefix)
956 java_hu_class += "export class " + java_hu_type + " extends CommonBase {\n"
957 java_hu_class += "\tprotected constructor(_dummy: object, ptr: number) { super(ptr, bindings." + bindings_type + "_free); }\n"
958 java_hu_class += "\t/* @internal */\n"
959 java_hu_class += f"\tpublic static constr_from_ptr(ptr: number): {java_hu_type} {{\n"
960 java_hu_class += f"\t\tconst raw_ty: number = bindings." + struct_name + "_ty_from_ptr(ptr);\n"
961 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"
962 out_c += "\t" + struct_name + " *obj = (" + struct_name + "*)(ptr & ~1);\n"
963 out_c += "\tswitch(obj->tag) {\n"
964 java_hu_class += "\t\tswitch (raw_ty) {\n"
965 java_hu_subclasses = ""
967 out_java += "export class " + struct_name + " {\n"
968 out_java += "\tprotected constructor() {}\n"
970 for var in variant_list:
971 java_hu_subclasses = java_hu_subclasses + "export class " + java_hu_type + "_" + var.var_name + " extends " + java_hu_type + " {\n"
972 java_hu_class += f"\t\t\tcase {var_idx}: "
973 java_hu_class += "return new " + java_hu_type + "_" + var.var_name + "(ptr);\n"
974 out_c += f"\t\tcase {struct_name}_{var.var_name}: return {var_idx};\n"
976 for idx, (field_ty, field_docs) in enumerate(var.fields):
977 java_hu_subclasses = java_hu_subclasses + "\tpublic " + field_ty.arg_name + f": {field_ty.java_hu_ty};\n"
978 if field_ty.to_hu_conv is not None:
979 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"
980 hu_conv_body += f"\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
981 hu_conv_body += f"\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
983 hu_conv_body += f"\t\tthis.{field_ty.arg_name} = bindings.{struct_name}_{var.var_name}_get_{field_ty.arg_name}(ptr);\n"
984 java_hu_subclasses += "\t/* @internal */\n"
985 java_hu_subclasses += "\tpublic constructor(ptr: number) {\n\t\tsuper(null, ptr);\n"
986 java_hu_subclasses = java_hu_subclasses + hu_conv_body
987 java_hu_subclasses = java_hu_subclasses + "\t}\n}\n"
990 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"
991 out_java += self.fn_call_body(struct_name + "_ty_from_ptr", "uint32_t", "number", "ptr: number", "ptr")
992 out_c += ("\t\tdefault: abort();\n")
993 out_c += ("\t}\n}\n")
995 for var in variant_list:
996 for idx, (field_map, _) in enumerate(var.fields):
997 fn_name = f"{struct_name}_{var.var_name}_get_{field_map.arg_name}"
998 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"
999 out_c += "\t" + struct_name + " *obj = (" + struct_name + "*)(ptr & ~1);\n"
1000 out_c += f"\tassert(obj->tag == {struct_name}_{var.var_name});\n"
1001 if field_map.ret_conv is not None:
1002 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
1003 if var.tuple_variant:
1004 out_c += "obj->" + camel_to_snake(var.var_name)
1006 out_c += "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name
1007 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
1008 out_c += "\treturn " + field_map.ret_conv_name + ";\n"
1010 if var.tuple_variant:
1011 out_c += "\treturn " + "obj->" + camel_to_snake(var.var_name) + ";\n"
1013 out_c += "\treturn " + "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name + ";\n"
1015 out_java += self.fn_call_body(fn_name, field_map.c_ty, field_map.java_ty, "ptr: number", "ptr")
1016 out_java_enum += java_hu_class
1017 self.struct_file_suffixes[java_hu_type] = java_hu_subclasses
1018 self.obj_defined([java_hu_type], "structs")
1019 return (out_java, out_java_enum, out_c)
1021 def map_opaque_struct(self, struct_name, struct_doc_comment):
1022 implementations = ""
1025 hu_name = struct_name.replace("LDKC2Tuple", "TwoTuple").replace("LDKC3Tuple", "ThreeTuple").replace("LDK", "")
1026 out_opaque_struct_human = f"{self.hu_struct_file_prefix}"
1027 if struct_name.startswith("LDKLocked"):
1028 out_opaque_struct_human += "/** XXX: DO NOT USE THIS - it remains locked until the GC runs (if that ever happens */"
1029 out_opaque_struct_human += f"""
1030 export class {hu_name} extends CommonBase {implementations}{{
1032 public constructor(_dummy: object, ptr: number) {{
1033 super(ptr, bindings.{struct_name.replace("LDK","")}_free);
1037 self.obj_defined([hu_name], "structs")
1038 return out_opaque_struct_human
1040 def map_tuple(self, struct_name):
1041 return self.map_opaque_struct(struct_name, "A Tuple")
1043 def map_result(self, struct_name, res_map, err_map):
1044 human_ty = struct_name.replace("LDKCResult", "Result")
1046 suffixes = f"export class {human_ty}_OK extends {human_ty} {{\n"
1047 if res_map.java_hu_ty != "void":
1048 suffixes += "\tpublic res: " + res_map.java_hu_ty + ";\n"
1051 public constructor(_dummy: object, ptr: number) {{
1054 if res_map.java_hu_ty == "void":
1056 elif res_map.to_hu_conv is not None:
1057 suffixes += "\t\tconst res: " + res_map.java_ty + " = bindings." + struct_name.replace("LDK", "") + "_get_ok(ptr);\n"
1058 suffixes += "\t\t" + res_map.to_hu_conv.replace("\n", "\n\t\t")
1059 suffixes += "\n\t\tthis.res = " + res_map.to_hu_conv_name + ";\n"
1061 suffixes += "\t\tthis.res = bindings." + struct_name.replace("LDK", "") + "_get_ok(ptr);\n"
1062 suffixes += "\t}\n}\n"
1064 suffixes += f"export class {human_ty}_Err extends {human_ty} {{\n"
1065 if err_map.java_hu_ty != "void":
1066 suffixes += "\tpublic err: " + err_map.java_hu_ty + ";\n"
1069 public constructor(_dummy: object, ptr: number) {{
1072 if err_map.java_hu_ty == "void":
1074 elif err_map.to_hu_conv is not None:
1075 suffixes += "\t\tconst err: " + err_map.java_ty + " = bindings." + struct_name.replace("LDK", "") + "_get_err(ptr);\n"
1076 suffixes += "\t\t" + err_map.to_hu_conv.replace("\n", "\n\t\t")
1077 suffixes += "\n\t\tthis.err = " + err_map.to_hu_conv_name + ";\n"
1079 suffixes += "\t\tthis.err = bindings." + struct_name.replace("LDK", "") + "_get_err(ptr);\n"
1080 suffixes += "\t}\n}"
1082 self.struct_file_suffixes[human_ty] = suffixes
1083 self.obj_defined([human_ty], "structs")
1085 return f"""{self.hu_struct_file_prefix}
1087 export class {human_ty} extends CommonBase {{
1088 protected constructor(_dummy: object, ptr: number) {{
1089 super(ptr, bindings.{struct_name.replace("LDK","")}_free);
1092 public static constr_from_ptr(ptr: number): {human_ty} {{
1093 if (bindings.{struct_name.replace("LDK", "")}_is_ok(ptr)) {{
1094 return new {human_ty}_OK(null, ptr);
1096 return new {human_ty}_Err(null, ptr);
1101 def fn_call_body(self, method_name, return_c_ty, return_java_ty, method_argument_string, native_call_argument_string):
1102 has_return_value = return_c_ty != 'void'
1103 return_statement = 'return nativeResponseValue;'
1104 if not has_return_value:
1105 return_statement = '// debug statements here'
1107 return f"""export function {method_name}({method_argument_string}): {return_java_ty} {{
1108 if(!isWasmInitialized) {{
1109 throw new Error("initializeWasm() must be awaited first!");
1111 const nativeResponseValue = wasm.TS_{method_name}({native_call_argument_string});
1115 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):
1118 out_java_struct = None
1121 out_c += (self.c_fn_ty_pfx)
1122 out_c += (return_type_info.c_ty)
1123 out_java += (return_type_info.java_ty)
1124 if return_type_info.ret_conv is not None:
1125 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
1126 out_java += (" " + method_name + "(")
1127 out_c += (" " + self.c_fn_name_define_pfx(method_name, True))
1129 method_argument_string = ""
1130 native_call_argument_string = ""
1131 for idx, arg_conv_info in enumerate(argument_types):
1133 method_argument_string += (", ")
1134 native_call_argument_string += ', '
1136 if arg_conv_info.c_ty != "void":
1137 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
1138 method_argument_string += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
1139 native_call_argument_string += arg_conv_info.arg_name
1140 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)
1142 out_java_struct = ""
1144 out_java_struct += ("\t// Skipped " + method_name + "\n")
1147 out_java_struct += (
1148 "\tpublic static constructor_" + meth_n + "(")
1150 out_java_struct += ("\tpublic " + meth_n + "(")
1151 for idx, arg in enumerate(argument_types):
1153 if not takes_self or idx > 1:
1154 out_java_struct += (", ")
1157 if arg.java_ty != "void":
1158 if arg.arg_name in default_constructor_args:
1159 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
1160 if explode_idx != 0:
1161 out_java_struct += (", ")
1162 out_java_struct += arg.arg_name + "_" + explode_arg.arg_name + ": " + explode_arg.java_hu_ty
1164 out_java_struct += arg.arg_name + ": " + arg.java_hu_ty
1167 if out_java_struct is not None:
1168 out_java_struct += "): " + return_type_info.java_hu_ty + " {\n"
1169 for info in argument_types:
1170 if info.arg_conv is not None:
1171 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
1172 if return_type_info.ret_conv is not None:
1173 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
1174 elif return_type_info.c_ty != "void":
1175 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
1178 if c_call_string is None:
1179 out_c += (method_name + "(")
1181 out_c += (c_call_string)
1182 for idx, info in enumerate(argument_types):
1183 if info.arg_conv_name is not None:
1186 elif c_call_string is not None:
1188 out_c += (info.arg_conv_name)
1190 if return_type_info.ret_conv is not None:
1191 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
1194 for info in argument_types:
1195 if info.arg_conv_cleanup is not None:
1196 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
1197 if return_type_info.ret_conv is not None:
1198 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
1199 elif return_type_info.c_ty != "void":
1200 out_c += ("\n\treturn ret_val;")
1201 out_c += ("\n}\n\n")
1204 out_java_struct += ("\t\t")
1205 if return_type_info.java_ty != "void":
1206 out_java_struct += "const ret: " + return_type_info.java_ty + " = "
1207 out_java_struct += ("bindings." + method_name + "(")
1208 for idx, info in enumerate(argument_types):
1210 out_java_struct += (", ")
1211 if idx == 0 and takes_self:
1212 out_java_struct += ("this.ptr")
1213 elif info.arg_name in default_constructor_args:
1214 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
1215 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
1216 if explode_idx != 0:
1217 out_java_struct += (", ")
1218 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1219 if explode_arg.from_hu_conv is not None:
1220 out_java_struct += (
1221 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
1223 out_java_struct += (expl_arg_name)
1224 out_java_struct += (")")
1225 elif info.from_hu_conv is not None:
1226 out_java_struct += (info.from_hu_conv[0])
1228 out_java_struct += (info.arg_name)
1229 out_java_struct += (");\n")
1230 if return_type_info.to_hu_conv is not None:
1232 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
1233 return_type_info.to_hu_conv_name) + "\n")
1235 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
1237 for idx, info in enumerate(argument_types):
1238 if idx == 0 and takes_self:
1240 elif info.arg_name in default_constructor_args:
1241 for explode_arg in default_constructor_args[info.arg_name]:
1242 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1243 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
1244 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
1245 expl_arg_name).replace(
1246 "this", return_type_info.to_hu_conv_name) + ";\n")
1247 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
1248 if not takes_self and return_type_info.to_hu_conv_name is not None:
1249 out_java_struct += (
1250 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name).replace("\n", "\n\t\t") + ";\n")
1252 out_java_struct += ("\t\t" + info.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n")
1254 if return_type_info.to_hu_conv_name is not None:
1255 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
1256 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
1257 out_java_struct += ("\t\treturn ret;\n")
1258 out_java_struct += ("\t}\n\n")
1260 return (out_java, out_c, out_java_struct)
1263 for struct in self.struct_file_suffixes:
1264 with open(self.outdir + "/structs/" + struct + self.file_ext, "a") as src:
1265 src.write(self.struct_file_suffixes[struct])
1267 with open(self.outdir + "/bindings.mts", "a") as bindings:
1270 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) {
1271 const weak: WeakRef<object> = js_objs[obj_ptr];
1272 if (weak == null || weak == undefined) {
1273 console.error("Got function call on unknown/free'd JS object!");
1274 throw new Error("Got function call on unknown/free'd JS object!");
1276 const obj: object = weak.deref();
1277 if (obj == null || obj == undefined) {
1278 console.error("Got function call on GC'd JS object!");
1279 throw new Error("Got function call on GC'd JS object!");
1283 bindings.write("\tswitch (fn_id) {\n")
1284 for f in self.function_ptrs:
1285 bindings.write(f"\t\tcase {str(f)}: fn = Object.getOwnPropertyDescriptor(obj, \"{self.function_ptrs[f][1]}\"); break;\n")
1287 bindings.write("""\t\tdefault:
1288 console.error("Got unknown function call from C!");
1289 throw new Error("Got unknown function call from C!");
1291 if (fn == null || fn == undefined) {
1292 console.error("Got function call on incorrect JS object!");
1293 throw new Error("Got function call on incorrect JS object!");
1295 return fn.value.bind(obj)(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10);