1 from bindingstypes import ConvInfo
4 def first_to_lower(string: str) -> str:
6 return first.lower() + string[1:]
14 def __init__(self, DEBUG: bool, target: Target, **kwargs):
16 self.c_type_map = dict(
17 uint8_t = ['number', 'Uint8Array'],
18 uint16_t = ['number', 'Uint16Array'],
19 uint32_t = ['number', 'Uint32Array'],
20 uint64_t = ['number'],
23 self.wasm_decoding_map = dict(
24 int8_tArray = 'decodeArray'
27 self.wasm_encoding_map = dict(
28 int8_tArray = 'encodeArray',
31 self.to_hu_conv_templates = dict(
32 ptr = 'const {var_name}_hu_conv: {human_type} = new {human_type}(null, {var_name});',
33 default = 'const {var_name}_hu_conv: {human_type} = new {human_type}(null, {var_name});',
36 self.bindings_header = self.wasm_import_header(target) + """
37 export class VecOrSliceDef {
38 public dataptr: number;
39 public datalen: number;
40 public stride: number;
41 public constructor(dataptr: number, datalen: number, stride: number) {
42 this.dataptr = dataptr;
43 this.datalen = datalen;
51 System.loadLibrary(\"lightningjni\");
52 init(java.lang.Enum.class, VecOrSliceDef.class);
56 static native void init(java.lang.Class c, java.lang.Class slicedef);
57 static native void init_class_cache();
59 public static native boolean deref_bool(long ptr);
60 public static native long deref_long(long ptr);
61 public static native void free_heap_ptr(long ptr);
62 public static native byte[] read_bytes(long ptr, long len);
63 public static native byte[] get_u8_slice_bytes(long slice_ptr);
64 public static native long bytes_to_u8_vec(byte[] bytes);
65 public static native long new_txpointer_copy_data(byte[] txdata);
66 public static native void txpointer_free(long ptr);
67 public static native byte[] txpointer_get_buffer(long ptr);
68 public static native long vec_slice_len(long vec);
69 public static native long new_empty_slice_vec();
74 self.bindings_footer = """
75 export async function initializeWasm(allowDoubleInitialization: boolean = false): Promise<void> {
76 if(isWasmInitialized && !allowDoubleInitialization) {
79 const wasmInstance = await WebAssembly.instantiate(wasmModule, imports)
80 wasm = wasmInstance.exports;
81 isWasmInitialized = true;
88 self.common_base = """
89 export default class CommonBase {
91 ptrs_to: object[] = []; // new LinkedList(); TODO: build linked list implementation
92 protected constructor(ptr: number) { this.ptr = ptr; }
93 public _test_only_get_ptr(): number { return this.ptr; }
94 protected finalize() {
95 // TODO: finalize myself
100 self.c_file_pfx = """#include <rust_types.h>
102 #include <stdatomic.h>
103 #include <lightning.h>
105 // These should be provided...somehow...
106 void *memset(void *s, int c, size_t n);
107 void *memcpy(void *dest, const void *src, size_t n);
108 int memcmp(const void *s1, const void *s2, size_t n);
110 void __attribute__((noreturn)) abort(void);
111 static inline void assert(bool expression) {
112 if (!expression) { abort(); }
117 self.c_file_pfx = self.c_file_pfx + """
118 void *malloc(size_t size);
119 void free(void *ptr);
121 #define MALLOC(a, _) malloc(a)
122 #define FREE(p) if ((long)(p) > 1024) { free(p); }
123 #define DO_ASSERT(a) (void)(a)
127 self.c_file_pfx = self.c_file_pfx + """
128 // Always run a, then assert it is true:
129 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
130 // Assert a is true or do nothing
131 #define CHECK(a) DO_ASSERT(a)
133 // Running a leak check across all the allocations and frees of the JDK is a mess,
134 // so instead we implement our own naive leak checker here, relying on the -wrap
135 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
136 // and free'd in Rust or C across the generated bindings shared library.
139 typedef struct allocation {
140 struct allocation* next;
142 const char* struct_name;
144 static allocation* allocation_ll = NULL;
146 void* __real_malloc(size_t len);
147 void* __real_calloc(size_t nmemb, size_t len);
148 static void new_allocation(void* res, const char* struct_name) {
149 allocation* new_alloc = __real_malloc(sizeof(allocation));
150 new_alloc->ptr = res;
151 new_alloc->struct_name = struct_name;
152 new_alloc->next = allocation_ll;
153 allocation_ll = new_alloc;
155 static void* MALLOC(size_t len, const char* struct_name) {
156 void* res = __real_malloc(len);
157 new_allocation(res, struct_name);
160 void __real_free(void* ptr);
161 static void alloc_freed(void* ptr) {
162 allocation* p = NULL;
163 allocation* it = allocation_ll;
164 while (it->ptr != ptr) {
165 p = it; it = it->next;
167 //XXX: fprintf(stderr, "Tried to free unknown pointer %p\\n", ptr);
168 return; // addrsan should catch malloc-unknown and print more info than we have
171 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
172 DO_ASSERT(it->ptr == ptr);
175 static void FREE(void* ptr) {
176 if ((long)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys
181 void* __wrap_malloc(size_t len) {
182 void* res = __real_malloc(len);
183 new_allocation(res, "malloc call");
186 void* __wrap_calloc(size_t nmemb, size_t len) {
187 void* res = __real_calloc(nmemb, len);
188 new_allocation(res, "calloc call");
191 void __wrap_free(void* ptr) {
192 if (ptr == NULL) return;
197 void* __real_realloc(void* ptr, size_t newlen);
198 void* __wrap_realloc(void* ptr, size_t len) {
199 if (ptr != NULL) alloc_freed(ptr);
200 void* res = __real_realloc(ptr, len);
201 new_allocation(res, "realloc call");
204 void __wrap_reallocarray(void* ptr, size_t new_sz) {
205 // Rust doesn't seem to use reallocarray currently
209 void __attribute__((destructor)) check_leaks() {
210 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
211 //XXX: fprintf(stderr, "%s %p remains\\n", a->struct_name, a->ptr);
213 DO_ASSERT(allocation_ll == NULL);
216 self.c_file_pfx = self.c_file_pfx + """
217 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
218 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
219 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
220 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
222 _Static_assert(sizeof(void*) == 4, "Pointers mut be 32 bits");
224 typedef uint32_t int64_tArray;
225 typedef uint32_t int8_tArray;
226 typedef uint32_t uint32_tArray;
227 typedef uint32_t ptrArray;
228 typedef uint32_t jstring;
230 static inline uint32_t init_arr(size_t arr_len, size_t elem_size, const char *type_desc) {
231 uint32_t *elems = (uint32_t*)MALLOC(arr_len * elem_size + 4, type_desc);
233 return (uint32_t)elems;
236 jstring str_ref_to_ts(const char* chars, size_t len) {
237 char* err_buf = MALLOC(len + 4, "str conv buf");
238 *((uint32_t*)err_buf) = len;
239 memcpy(err_buf + 4, chars, len);
240 return (uint32_t) err_buf;
243 typedef bool jboolean;
245 uint32_t __attribute__((visibility("default"))) TS_malloc(uint32_t size) {
246 return (uint32_t)MALLOC(size, "JS-Called malloc");
248 void __attribute__((visibility("default"))) TS_free(uint32_t ptr) {
253 self.hu_struct_file_prefix = f"""
254 import CommonBase from './CommonBase';
255 import * as bindings from '../bindings' // TODO: figure out location
258 self.c_fn_ty_pfx = ""
259 self.file_ext = ".ts"
260 self.ptr_c_ty = "uint32_t"
261 self.ptr_native_ty = "number"
262 self.result_c_ty = "uint32_t"
263 self.ptr_arr = "ptrArray"
264 self.get_native_arr_len_call = ("*((uint32_t*)", ")")
266 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
268 def create_native_arr_call(self, arr_len, ty_info):
269 if ty_info.c_ty == "int8_tArray":
270 return "init_arr(" + arr_len + ", sizeof(uint8_t), \"Native int8_tArray Bytes\")"
271 elif ty_info.c_ty == "int64_tArray":
272 return "init_arr(" + arr_len + ", sizeof(uint64_t), \"Native int64_tArray Bytes\")"
273 elif ty_info.c_ty == "uint32_tArray":
274 return "init_arr(" + arr_len + ", sizeof(uint32_t), \"Native uint32_tArray Bytes\")"
275 elif ty_info.c_ty == "ptrArray":
276 assert ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array")
277 return "init_arr(" + arr_len + ", sizeof(uint32_t), \"Native ptrArray Bytes\")"
279 print("Need to create arr!", ty_info.c_ty)
281 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
282 if ty_info.c_ty == "int8_tArray":
283 return ("memcpy((uint8_t*)(" + arr_name + " + 4), ", ", " + arr_len + ")")
286 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
287 if ty_info.c_ty == "int8_tArray":
289 return "memcpy(" + dest_name + ", (uint8_t*)(" + arr_name + " + 4), " + arr_len + ")"
291 return "(int8_t*)(" + arr_name + " + 4)"
293 return "(" + ty_info.subty.c_ty + "*)(" + arr_name + " + 4)"
294 def get_native_arr_elem(self, arr_name, idxc, ty_info):
295 assert False # Only called if above is None
296 def get_native_arr_ptr_call(self, ty_info):
297 if ty_info.subty is not None:
298 return "(" + ty_info.subty.c_ty + "*)(", " + 4)"
299 return "(" + ty_info.c_ty + "*)(", " + 4)"
300 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
302 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
303 if ty_info.c_ty == "int8_tArray":
308 def str_ref_to_c_call(self, var_name, str_len):
309 return "str_ref_to_ts(" + var_name + ", " + str_len + ")"
311 def c_fn_name_define_pfx(self, fn_name, have_args):
312 return " __attribute__((visibility(\"default\"))) TS_" + fn_name + "("
314 def wasm_import_header(self, target):
315 if target == Target.NODEJS:
317 import * as fs from 'fs';
318 const source = fs.readFileSync('./ldk.wasm');
320 const memory = new WebAssembly.Memory({initial: 256});
321 const wasmModule = new WebAssembly.Module(source);
323 const imports: any = {};
326 imports.env.memoryBase = 0;
327 imports.env.memory = memory;
328 imports.env.tableBase = 0;
329 imports.env.table = new WebAssembly.Table({initial: 4, element: 'anyfunc'});
331 imports.env["abort"] = function () {
332 console.error("ABORT");
336 let isWasmInitialized: boolean = false;
341 const nextMultipleOfFour = (value: number) => {
342 return Math.ceil(value / 4) * 4;
345 const encodeUint8Array = (inputArray) => {
346 const cArrayPointer = wasm.TS_malloc(inputArray.length + 4);
347 const arrayLengthView = new Uint32Array(memory.buffer, cArrayPointer, 1);
348 arrayLengthView[0] = inputArray.length;
349 const arrayMemoryView = new Uint8Array(memory.buffer, cArrayPointer + 4, inputArray.length);
350 arrayMemoryView.set(inputArray);
351 return cArrayPointer;
354 const encodeUint32Array = (inputArray) => {
355 const cArrayPointer = wasm.TS_malloc((inputArray.length + 1) * 4);
356 const arrayMemoryView = new Uint32Array(memory.buffer, cArrayPointer, inputArray.length);
357 arrayMemoryView.set(inputArray, 1);
358 arrayMemoryView[0] = inputArray.length;
359 return cArrayPointer;
362 const getArrayLength = (arrayPointer) => {
363 const arraySizeViewer = new Uint32Array(
364 memory.buffer, // value
365 arrayPointer, // offset
368 return arraySizeViewer[0];
370 const decodeUint8Array = (arrayPointer, free = true) => {
371 const arraySize = getArrayLength(arrayPointer);
372 const actualArrayViewer = new Uint8Array(
373 memory.buffer, // value
374 arrayPointer + 4, // offset (ignoring length bytes)
375 arraySize // uint8 count
377 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
378 // will free the underlying memory when it becomes unreachable instead of copying here.
379 const actualArray = actualArrayViewer.slice(0, arraySize);
381 wasm.TS_free(arrayPointer);
385 const decodeUint32Array = (arrayPointer, free = true) => {
386 const arraySize = getArrayLength(arrayPointer);
387 const actualArrayViewer = new Uint32Array(
388 memory.buffer, // value
389 arrayPointer + 4, // offset (ignoring length bytes)
390 arraySize // uint32 count
392 // Clone the contents, TODO: In the future we should wrap the Viewer in a class that
393 // will free the underlying memory when it becomes unreachable instead of copying here.
394 const actualArray = actualArrayViewer.slice(0, arraySize);
396 wasm.TS_free(arrayPointer);
401 const encodeString = (string) => {
402 // make malloc count divisible by 4
403 const memoryNeed = nextMultipleOfFour(string.length + 1);
404 const stringPointer = wasm.TS_malloc(memoryNeed);
405 const stringMemoryView = new Uint8Array(
406 memory.buffer, // value
407 stringPointer, // offset
408 string.length + 1 // length
410 for (let i = 0; i < string.length; i++) {
411 stringMemoryView[i] = string.charCodeAt(i);
413 stringMemoryView[string.length] = 0;
414 return stringPointer;
417 const decodeString = (stringPointer, free = true) => {
418 const memoryView = new Uint8Array(memory.buffer, stringPointer);
422 while (memoryView[cursor] !== 0) {
423 result += String.fromCharCode(memoryView[cursor]);
428 wasm.wasm_free(stringPointer);
439 def native_c_unitary_enum_map(self, struct_name, variants, enum_doc_comment):
440 out_c = "static inline " + struct_name + " " + struct_name + "_from_js(int32_t ord) {\n"
441 out_c = out_c + "\tswitch (ord) {\n"
444 out_typescript_enum_fields = ""
447 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
449 out_typescript_enum_fields += f"{var},\n\t\t\t\t"
450 out_c = out_c + "\t}\n"
451 out_c = out_c + "\tabort();\n"
452 out_c = out_c + "}\n"
454 out_c = out_c + "static inline int32_t " + struct_name + "_to_js(" + struct_name + " val) {\n"
455 out_c = out_c + "\tswitch (val) {\n"
458 out_c = out_c + "\t\tcase " + var + ": return %d;\n" % ord_v
460 out_c = out_c + "\t\tdefault: abort();\n"
461 out_c = out_c + "\t}\n"
462 out_c = out_c + "}\n"
464 out_typescript_enum = f"""
465 export enum {struct_name} {{
466 {out_typescript_enum_fields}
470 return (out_c, out_typescript_enum, "")
472 def c_unitary_enum_to_native_call(self, ty_info):
473 return (ty_info.rust_obj + "_to_js(", ")")
474 def native_unitary_enum_to_c_call(self, ty_info):
475 return (ty_info.rust_obj + "_from_js(", ")")
477 def c_complex_enum_pass_ty(self, struct_name):
480 def c_constr_native_complex_enum(self, struct_name, variant, c_params):
481 ret = "0 /* " + struct_name + " - " + variant + " */"
482 for param in c_params:
483 ret = ret + "; (void) " + param
486 def native_c_map_trait(self, struct_name, field_var_conversions, field_function_lines, trait_doc_comment):
487 out_typescript_bindings = "\n\n\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: START\n\n"
489 constructor_arguments = ""
490 super_instantiator = ""
491 pointer_to_adder = ""
492 impl_constructor_arguments = ""
493 for var in field_var_conversions:
494 if isinstance(var, ConvInfo):
495 constructor_arguments += f", {first_to_lower(var.arg_name)}?: {var.java_hu_ty}"
496 impl_constructor_arguments += f", {var.arg_name}: {var.java_hu_ty}"
497 if var.from_hu_conv is not None:
498 super_instantiator += ", " + var.from_hu_conv[0]
499 if var.from_hu_conv[1] != "":
500 pointer_to_adder += var.from_hu_conv[1] + ";\n"
502 super_instantiator += ", " + first_to_lower(var.arg_name)
504 constructor_arguments += f", {first_to_lower(var[1])}?: bindings.{var[0]}"
505 super_instantiator += ", " + first_to_lower(var[1])
506 pointer_to_adder += "this.ptrs_to.push(" + first_to_lower(var[1]) + ");\n"
507 impl_constructor_arguments += f", {first_to_lower(var[1])}_impl: {var[0].replace('LDK', '')}.{var[0].replace('LDK', '')}Interface"
509 # BUILD INTERFACE METHODS
510 out_java_interface = ""
511 out_interface_implementation_overrides = ""
513 for fn_line in field_function_lines:
514 java_method_descriptor = ""
515 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
516 out_java_interface += fn_line.fn_name + "("
517 out_interface_implementation_overrides += f"{fn_line.fn_name} ("
519 for idx, arg_conv_info in enumerate(fn_line.args_ty):
521 out_java_interface += ", "
522 out_interface_implementation_overrides += ", "
523 out_java_interface += f"{arg_conv_info.arg_name}: {arg_conv_info.java_hu_ty}"
524 out_interface_implementation_overrides += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
525 java_method_descriptor += arg_conv_info.java_fn_ty_arg
526 out_java_interface += f"): {fn_line.ret_ty_info.java_hu_ty};\n\t\t\t\t"
527 java_method_descriptor += ")" + fn_line.ret_ty_info.java_fn_ty_arg
528 java_methods.append((fn_line.fn_name, java_method_descriptor))
530 out_interface_implementation_overrides += f"): {fn_line.ret_ty_info.java_ty} {{\n"
532 interface_method_override_inset = "\t\t\t\t\t\t"
533 interface_implementation_inset = "\t\t\t\t\t\t\t"
534 for arg_info in fn_line.args_ty:
535 if arg_info.to_hu_conv is not None:
536 out_interface_implementation_overrides += interface_implementation_inset + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
538 if fn_line.ret_ty_info.java_ty != "void":
539 out_interface_implementation_overrides += interface_implementation_inset + fn_line.ret_ty_info.java_hu_ty + " ret = arg." + fn_line.fn_name + "("
541 out_interface_implementation_overrides += f"{interface_implementation_inset}arg." + fn_line.fn_name + "("
543 for idx, arg_info in enumerate(fn_line.args_ty):
545 out_interface_implementation_overrides += ", "
546 if arg_info.to_hu_conv_name is not None:
547 out_interface_implementation_overrides += arg_info.to_hu_conv_name
549 out_interface_implementation_overrides += arg_info.arg_name
551 out_interface_implementation_overrides += ");\n"
552 if fn_line.ret_ty_info.java_ty != "void":
553 if fn_line.ret_ty_info.from_hu_conv is not None:
554 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\t" + f"result: {fn_line.ret_ty_info.java_ty} = " + fn_line.ret_ty_info.from_hu_conv[0] + ";\n"
555 if fn_line.ret_ty_info.from_hu_conv[1] != "":
556 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\t" + fn_line.ret_ty_info.from_hu_conv[1].replace("this", "impl_holder.held") + ";\n"
557 #if fn_line.ret_ty_info.rust_obj in result_types:
558 # XXX: We need to handle this in conversion logic so that its cross-language!
559 # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead
560 # out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\tret.ptr = 0;\n"
561 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\treturn result;\n"
563 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\treturn ret;\n"
564 out_interface_implementation_overrides += f"{interface_method_override_inset}}},\n\n{interface_method_override_inset}"
566 trait_constructor_arguments = ""
567 for var in field_var_conversions:
568 if isinstance(var, ConvInfo):
569 trait_constructor_arguments += ", " + var.arg_name
571 trait_constructor_arguments += ", " + var[1] + ".new_impl(" + var[1] + "_impl).bindings_instance"
573 out_typescript_human = f"""
574 {self.hu_struct_file_prefix}
576 export class {struct_name.replace("LDK","")} extends CommonBase {{
578 bindings_instance?: bindings.{struct_name};
580 constructor(ptr?: number, arg?: bindings.{struct_name}{constructor_arguments}) {{
581 if (Number.isFinite(ptr)) {{
583 this.bindings_instance = null;
585 // TODO: private constructor instantiation
586 super(bindings.{struct_name}_new(arg{super_instantiator}));
587 this.ptrs_to.push(arg);
592 protected finalize() {{
593 if (this.ptr != 0) {{
594 bindings.{struct_name.replace("LDK","")}_free(this.ptr);
599 static new_impl(arg: {struct_name.replace("LDK", "")}Interface{impl_constructor_arguments}): {struct_name.replace("LDK", "")} {{
600 const impl_holder: {struct_name}Holder = new {struct_name}Holder();
601 let structImplementation = <bindings.{struct_name}>{{
602 // todo: in-line interface filling
603 {out_interface_implementation_overrides}
605 impl_holder.held = new {struct_name.replace("LDK", "")} (null, structImplementation{trait_constructor_arguments});
609 export interface {struct_name.replace("LDK", "")}Interface {{
613 class {struct_name}Holder {{
614 held: {struct_name.replace("LDK", "")};
618 out_typescript_bindings += "\t\texport interface " + struct_name + " {\n"
620 for fn_line in field_function_lines:
621 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
622 out_typescript_bindings += f"\t\t\t{fn_line.fn_name} ("
624 for idx, arg_conv_info in enumerate(fn_line.args_ty):
626 out_typescript_bindings = out_typescript_bindings + ", "
627 out_typescript_bindings += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
629 out_typescript_bindings += f"): {fn_line.ret_ty_info.java_ty};\n"
631 out_typescript_bindings = out_typescript_bindings + "\t\t}\n\n"
633 out_typescript_bindings += f"\t\texport function {struct_name}_new(impl: {struct_name}"
634 for var in field_var_conversions:
635 if isinstance(var, ConvInfo):
636 out_typescript_bindings += f", {var.arg_name}: {var.java_ty}"
638 out_typescript_bindings += f", {var[1]}: {var[0]}"
640 out_typescript_bindings += f"""): number {{
641 throw new Error('unimplemented'); // TODO: bind to WASM
645 out_typescript_bindings += '\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: END\n\n\n'
647 # Now that we've written out our java code (and created java_meths), generate C
648 out_c = "typedef struct " + struct_name + "_JCalls {\n"
649 out_c = out_c + "\tatomic_size_t refcnt;\n"
650 for var in field_var_conversions:
651 if isinstance(var, ConvInfo):
652 # We're a regular ol' field
656 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
657 for fn in field_function_lines:
658 if fn.fn_name != "free" and fn.fn_name != "clone":
659 out_c = out_c + "\tuint32_t " + fn.fn_name + "_meth;\n"
660 out_c = out_c + "} " + struct_name + "_JCalls;\n"
662 for fn_line in field_function_lines:
663 if fn_line.fn_name == "free":
664 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
665 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
666 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
667 for fn in field_function_lines:
668 if fn.fn_name != "free" and fn.fn_name != "clone":
669 out_c = out_c + "\t\tjs_free(j_calls->" + fn.fn_name + "_meth);\n"
670 out_c = out_c + "\t\tFREE(j_calls);\n"
671 out_c = out_c + "\t}\n}\n"
673 for idx, fn_line in enumerate(field_function_lines):
674 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
675 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
676 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_" + struct_name + "_jcall("
677 if fn_line.self_is_const:
678 out_c = out_c + "const void* this_arg"
680 out_c = out_c + "void* this_arg"
682 for idx, arg in enumerate(fn_line.args_ty):
683 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
685 out_c = out_c + ") {\n"
686 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
688 for arg_info in fn_line.args_ty:
689 if arg_info.ret_conv is not None:
690 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
691 out_c = out_c + arg_info.arg_name
692 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
694 if fn_line.ret_ty_info.c_ty.endswith("Array"):
695 out_c = out_c + "\t" + fn_line.ret_ty_info.c_ty + " ret = js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
696 elif fn_line.ret_ty_info.java_ty == "void":
697 out_c = out_c + "\tjs_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
698 elif not fn_line.ret_ty_info.passed_as_ptr:
699 out_c = out_c + "\treturn js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
701 out_c = out_c + "\t" + fn_line.ret_ty_info.rust_obj + "* ret = (" + fn_line.ret_ty_info.rust_obj + "*)js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
703 for idx, arg_info in enumerate(fn_line.args_ty):
704 if arg_info.ret_conv is not None:
705 out_c = out_c + ", " + arg_info.ret_conv_name
707 out_c = out_c + ", " + arg_info.arg_name
708 out_c = out_c + ");\n"
709 if fn_line.ret_ty_info.arg_conv is not None:
710 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"
712 out_c = out_c + "}\n"
714 # Write out a clone function whether we need one or not, as we use them in moving to rust
715 out_c = out_c + "static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n"
716 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
717 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
718 for var in field_var_conversions:
719 if not isinstance(var, ConvInfo):
720 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
721 out_c = out_c + "\treturn (void*) this_arg;\n"
722 out_c = out_c + "}\n"
724 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (/*TODO: JS Object Reference */void* o"
725 for var in field_var_conversions:
726 if isinstance(var, ConvInfo):
727 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
729 out_c = out_c + ", /*TODO: JS Object Reference */void* " + var[1]
730 out_c = out_c + ") {\n"
732 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
733 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
734 out_c = out_c + "\t//TODO: Assign calls->o from o\n"
736 for (fn_name, java_meth_descr) in java_meths:
737 if fn_name != "free" and fn_name != "clone":
738 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
739 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
741 for var in field_var_conversions:
742 if isinstance(var, ConvInfo) and var.arg_conv is not None:
743 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
744 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
745 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
746 for fn_line in field_function_lines:
747 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
748 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_" + struct_name + "_jcall,\n"
749 elif fn_line.fn_name == "free":
750 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
752 out_c = out_c + "\t\t.clone = " + struct_name + "_JCalls_clone,\n"
753 for var in field_var_conversions:
754 if isinstance(var, ConvInfo):
755 if var.arg_conv_name is not None:
756 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
757 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
759 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
760 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
762 out_c = out_c + "\t\t." + var[1] + " = " + var[0] + "_init(" + var[1] + "),\n"
763 out_c = out_c + "\t};\n"
764 for var in field_var_conversions:
765 if not isinstance(var, ConvInfo):
766 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
767 out_c = out_c + "\treturn ret;\n"
768 out_c = out_c + "}\n"
770 out_c = out_c + self.c_fn_ty_pfx + "long " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "/*TODO: JS Object Reference */void* o"
771 for var in field_var_conversions:
772 if isinstance(var, ConvInfo):
773 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
775 out_c = out_c + ", /*TODO: JS Object Reference */ void* " + var[1]
776 out_c = out_c + ") {\n"
777 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
778 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(o"
779 for var in field_var_conversions:
780 if isinstance(var, ConvInfo):
781 out_c = out_c + ", " + var.arg_name
783 out_c = out_c + ", " + var[1]
784 out_c = out_c + ");\n"
785 out_c = out_c + "\treturn (long)res_ptr;\n"
786 out_c = out_c + "}\n"
788 return (out_typescript_bindings, out_typescript_human, out_c)
790 def trait_struct_inc_refcnt(self, ty_info):
793 def map_complex_enum(self, struct_name, variant_list, camel_to_snake, enum_doc_comment):
794 java_hu_type = struct_name.replace("LDK", "")
800 out_java_enum += (self.hu_struct_file_prefix)
801 out_java_enum += ("export default class " + java_hu_type + " extends CommonBase {\n")
802 out_java_enum += ("\tprotected constructor(_dummy: object, ptr: number) { super(ptr); }\n")
803 out_java_enum += ("\tprotected finalize() {\n")
804 out_java_enum += ("\t\tsuper.finalize();\n")
805 out_java_enum += ("\t\tif (this.ptr != 0) { bindings." + java_hu_type + "_free(this.ptr); }\n")
806 out_java_enum += ("\t}\n")
807 out_java_enum += f"\tstatic constr_from_ptr(ptr: number): {java_hu_type} {{\n"
808 out_java_enum += (f"\t\tconst raw_val: bindings.{struct_name} = bindings." + struct_name + "_ref_from_ptr(ptr);\n")
809 java_hu_subclasses = ""
811 out_java += ("\tpublic static class " + struct_name + " {\n")
812 out_java += ("\t\tprivate " + struct_name + "() {}\n")
813 for var in variant_list:
814 out_java += ("\t\texport class " + var.var_name + " extends " + struct_name + " {\n")
815 java_hu_subclasses = java_hu_subclasses + "export class " + var.var_name + " extends " + java_hu_type + " {\n"
816 out_java_enum += ("\t\tif (raw_val instanceof bindings." + struct_name + "." + var.var_name + ") {\n")
817 out_java_enum += ("\t\t\treturn new " + var.var_name + "(this.ptr, raw_val);\n")
818 init_meth_params = ""
821 for idx, field_ty in enumerate(var.fields):
822 out_java += ("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.arg_name + ";\n")
823 java_hu_subclasses = java_hu_subclasses + "\tpublic " + field_ty.arg_name + f": {field_ty.java_hu_ty};\n"
824 if field_ty.to_hu_conv is not None:
825 hu_conv_body = hu_conv_body + "\t\tconst " + field_ty.arg_name + f": {field_ty.java_ty} = obj." + field_ty.arg_name + ";\n"
826 hu_conv_body = hu_conv_body + "\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
827 hu_conv_body = hu_conv_body + "\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
829 hu_conv_body = hu_conv_body + "\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
831 init_meth_params = init_meth_params + ", "
832 init_meth_params = init_meth_params + field_ty.java_ty + " " + field_ty.arg_name
833 init_meth_body = init_meth_body + "this." + field_ty.arg_name + " = " + field_ty.arg_name + "; "
834 out_java += ("\t\t\t" + var.var_name + "(" + init_meth_params + ") { ")
835 out_java += (init_meth_body)
837 out_java += ("\t\t}\n")
838 out_java_enum += ("\t\t}\n")
839 java_hu_subclasses = java_hu_subclasses + "\tprivate constructor(ptr: number, obj: bindings." + struct_name + "." + var.var_name + ") {\n\t\tsuper(null, ptr);\n"
840 java_hu_subclasses = java_hu_subclasses + hu_conv_body
841 java_hu_subclasses = java_hu_subclasses + "\t}\n}\n"
842 out_java += ("\t\tstatic native void init();\n")
843 out_java += ("\t}\n")
844 out_java_enum += ("\t\tthrow new Error('oops, this should be unreachable'); // Unreachable without extending the (internal) bindings interface\n\t}\n\n")
845 out_java += ("\tstatic { " + struct_name + ".init(); }\n")
846 out_java += ("\tpublic static native " + struct_name + " " + struct_name + "_ref_from_ptr(long ptr);\n");
848 out_c += (self.c_fn_ty_pfx + self.c_complex_enum_pass_ty(struct_name) + self.c_fn_name_define_pfx(struct_name + "_ref_from_ptr", True) + self.ptr_c_ty + " ptr) {\n")
849 out_c += ("\t" + struct_name + " *obj = (" + struct_name + "*)(ptr & ~1);\n")
850 out_c += ("\tswitch(obj->tag) {\n")
851 for var in variant_list:
852 out_c += ("\t\tcase " + struct_name + "_" + var.var_name + ": {\n")
854 for idx, field_map in enumerate(var.fields):
855 if field_map.ret_conv is not None:
856 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
857 if var.tuple_variant:
858 out_c += "obj->" + camel_to_snake(var.var_name)
860 out_c += "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name
861 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
862 c_params.append(field_map.ret_conv_name)
864 if var.tuple_variant:
865 c_params.append("obj->" + camel_to_snake(var.var_name))
867 c_params.append("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
868 out_c += ("\t\t\treturn " + self.c_constr_native_complex_enum(struct_name, var.var_name, c_params) + ";\n")
870 out_c += ("\t\tdefault: abort();\n")
871 out_c += ("\t}\n}\n")
872 out_java_enum += ("}\n")
873 out_java_enum += (java_hu_subclasses)
874 return (out_java, out_java_enum, out_c)
876 def map_opaque_struct(self, struct_name, struct_doc_comment):
879 if struct_name.startswith("LDKLocked"):
880 implementations += "implements AutoCloseable "
886 protected finalize() {
890 out_opaque_struct_human = f"""
891 {self.hu_struct_file_prefix}
893 export default class {struct_name.replace("LDK","")} extends CommonBase {implementations}{{
894 constructor(_dummy: object, ptr: number) {{
899 if (this.ptr != 0) {{
900 bindings.{struct_name.replace("LDK","")}_free(this.ptr);
904 return out_opaque_struct_human
906 def map_function(self, argument_types, c_call_string, method_name, return_type_info, struct_meth, default_constructor_args, takes_self, args_known, type_mapping_generator, doc_comment):
909 out_java_struct = None
911 out_java += ("\tpublic static native ")
912 out_c += (self.c_fn_ty_pfx)
913 out_c += (return_type_info.c_ty)
914 out_java += (return_type_info.java_ty)
915 if return_type_info.ret_conv is not None:
916 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
917 out_java += (" " + method_name + "(")
918 out_c += (" " + self.c_fn_name_define_pfx(method_name, True))
920 method_argument_string = ""
921 native_call_argument_string = ""
922 for idx, arg_conv_info in enumerate(argument_types):
924 method_argument_string += (", ")
925 native_call_argument_string += ', '
927 if arg_conv_info.c_ty != "void":
928 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
929 needs_encoding = arg_conv_info.c_ty in self.wasm_encoding_map
930 native_argument = arg_conv_info.arg_name
932 converter = self.wasm_encoding_map[arg_conv_info.c_ty]
933 native_argument = f"{converter}({arg_conv_info.arg_name})"
934 method_argument_string += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
935 native_call_argument_string += native_argument
937 has_return_value = return_type_info.c_ty != 'void'
938 needs_decoding = return_type_info.c_ty in self.wasm_decoding_map
939 return_statement = 'return nativeResponseValue;'
940 if not has_return_value:
941 return_statement = '// debug statements here'
943 converter = self.wasm_decoding_map[return_type_info.c_ty]
944 return_statement = f"return {converter}(nativeResponseValue);"
946 out_java = f"""\texport function {method_name}({method_argument_string}): {return_type_info.java_ty} {{
947 if(!isWasmInitialized) {{
948 throw new Error("initializeWasm() must be awaited first!");
950 const nativeResponseValue = wasm.{method_name}({native_call_argument_string});
957 out_java_struct += ("\t// Skipped " + method_name + "\n")
959 meth_n = method_name[len(struct_meth) + 1:]
962 "\tpublic static " + return_type_info.java_hu_ty + " constructor_" + meth_n + "(")
964 out_java_struct += ("\tpublic " + return_type_info.java_hu_ty + " " + meth_n + "(")
965 for idx, arg in enumerate(argument_types):
967 if not takes_self or idx > 1:
968 out_java_struct += (", ")
971 if arg.java_ty != "void":
972 if arg.arg_name in default_constructor_args:
973 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
975 out_java_struct += (", ")
977 explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name)
979 out_java_struct += (arg.java_hu_ty + " " + arg.arg_name)
982 if out_java_struct is not None:
983 out_java_struct += (") {\n")
984 for info in argument_types:
985 if info.arg_conv is not None:
986 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
987 if return_type_info.ret_conv is not None:
988 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
989 elif return_type_info.c_ty != "void":
990 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
993 if c_call_string is None:
994 out_c += (method_name + "(")
996 out_c += (c_call_string)
997 for idx, info in enumerate(argument_types):
998 if info.arg_conv_name is not None:
1001 elif c_call_string is not None:
1003 out_c += (info.arg_conv_name)
1005 if return_type_info.ret_conv is not None:
1006 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
1009 for info in argument_types:
1010 if info.arg_conv_cleanup is not None:
1011 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
1012 if return_type_info.ret_conv is not None:
1013 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
1014 elif return_type_info.c_ty != "void":
1015 out_c += ("\n\treturn ret_val;")
1016 out_c += ("\n}\n\n")
1019 out_java_struct += ("\t\t")
1020 if return_type_info.java_ty != "void":
1021 out_java_struct += (return_type_info.java_ty + " ret = ")
1022 out_java_struct += ("bindings." + method_name + "(")
1023 for idx, info in enumerate(argument_types):
1025 out_java_struct += (", ")
1026 if idx == 0 and takes_self:
1027 out_java_struct += ("this.ptr")
1028 elif info.arg_name in default_constructor_args:
1029 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
1030 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
1031 if explode_idx != 0:
1032 out_java_struct += (", ")
1033 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1034 if explode_arg.from_hu_conv is not None:
1035 out_java_struct += (
1036 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
1038 out_java_struct += (expl_arg_name)
1039 out_java_struct += (")")
1040 elif info.from_hu_conv is not None:
1041 out_java_struct += (info.from_hu_conv[0])
1043 out_java_struct += (info.arg_name)
1044 out_java_struct += (");\n")
1045 if return_type_info.to_hu_conv is not None:
1047 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
1048 return_type_info.to_hu_conv_name) + "\n")
1050 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
1052 for idx, info in enumerate(argument_types):
1053 if idx == 0 and takes_self:
1055 elif info.arg_name in default_constructor_args:
1056 for explode_arg in default_constructor_args[info.arg_name]:
1057 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
1058 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
1059 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
1060 expl_arg_name).replace(
1061 "this", return_type_info.to_hu_conv_name) + ";\n")
1062 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
1063 if not takes_self and return_type_info.to_hu_conv_name is not None:
1064 out_java_struct += (
1065 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name).replace("\n", "\n\t\t") + ";\n")
1067 out_java_struct += ("\t\t" + info.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n")
1069 if return_type_info.to_hu_conv_name is not None:
1070 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
1071 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
1072 out_java_struct += ("\t\treturn ret;\n")
1073 out_java_struct += ("\t}\n\n")
1075 return (out_java, out_c, out_java_struct)