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 = ""
76 self.common_base = """
77 export default class CommonBase {
79 ptrs_to: object[] = []; // new LinkedList(); TODO: build linked list implementation
80 protected constructor(ptr: number) { this.ptr = ptr; }
81 public _test_only_get_ptr(): number { return this.ptr; }
82 protected finalize() {
83 // TODO: finalize myself
88 self.c_file_pfx = """#include <rust_types.h>
90 #include <stdatomic.h>
91 #include <lightning.h>
93 // These should be provided...somehow...
94 void *memset(void *s, int c, size_t n);
95 void *memcpy(void *dest, const void *src, size_t n);
96 int memcmp(const void *s1, const void *s2, size_t n);
98 void __attribute__((noreturn)) abort(void);
99 void assert(bool expression);
103 self.c_file_pfx = self.c_file_pfx + """
104 void *malloc(size_t size);
105 void free(void *ptr);
107 #define MALLOC(a, _) malloc(a)
108 #define FREE(p) if ((long)(p) > 1024) { free(p); }
109 #define DO_ASSERT(a) (void)(a)
113 self.c_file_pfx = self.c_file_pfx + """
114 // Always run a, then assert it is true:
115 #define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
116 // Assert a is true or do nothing
117 #define CHECK(a) DO_ASSERT(a)
119 // Running a leak check across all the allocations and frees of the JDK is a mess,
120 // so instead we implement our own naive leak checker here, relying on the -wrap
121 // linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated
122 // and free'd in Rust or C across the generated bindings shared library.
125 typedef struct allocation {
126 struct allocation* next;
128 const char* struct_name;
130 static allocation* allocation_ll = NULL;
132 void* __real_malloc(size_t len);
133 void* __real_calloc(size_t nmemb, size_t len);
134 static void new_allocation(void* res, const char* struct_name) {
135 allocation* new_alloc = __real_malloc(sizeof(allocation));
136 new_alloc->ptr = res;
137 new_alloc->struct_name = struct_name;
138 new_alloc->next = allocation_ll;
139 allocation_ll = new_alloc;
141 static void* MALLOC(size_t len, const char* struct_name) {
142 void* res = __real_malloc(len);
143 new_allocation(res, struct_name);
146 void __real_free(void* ptr);
147 static void alloc_freed(void* ptr) {
148 allocation* p = NULL;
149 allocation* it = allocation_ll;
150 while (it->ptr != ptr) {
151 p = it; it = it->next;
153 //XXX: fprintf(stderr, "Tried to free unknown pointer %p\\n", ptr);
154 return; // addrsan should catch malloc-unknown and print more info than we have
157 if (p) { p->next = it->next; } else { allocation_ll = it->next; }
158 DO_ASSERT(it->ptr == ptr);
161 static void FREE(void* ptr) {
162 if ((long)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys
167 void* __wrap_malloc(size_t len) {
168 void* res = __real_malloc(len);
169 new_allocation(res, "malloc call");
172 void* __wrap_calloc(size_t nmemb, size_t len) {
173 void* res = __real_calloc(nmemb, len);
174 new_allocation(res, "calloc call");
177 void __wrap_free(void* ptr) {
178 if (ptr == NULL) return;
183 void* __real_realloc(void* ptr, size_t newlen);
184 void* __wrap_realloc(void* ptr, size_t len) {
185 if (ptr != NULL) alloc_freed(ptr);
186 void* res = __real_realloc(ptr, len);
187 new_allocation(res, "realloc call");
190 void __wrap_reallocarray(void* ptr, size_t new_sz) {
191 // Rust doesn't seem to use reallocarray currently
195 void __attribute__((destructor)) check_leaks() {
196 for (allocation* a = allocation_ll; a != NULL; a = a->next) {
197 //XXX: fprintf(stderr, "%s %p remains\\n", a->struct_name, a->ptr);
199 DO_ASSERT(allocation_ll == NULL);
202 self.c_file_pfx = self.c_file_pfx + """
203 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
204 _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec<u8> and [u8] need to have been mapped identically");
205 _Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
206 _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
208 _Static_assert(sizeof(void*) == 4, "Pointers mut be 32 bits");
210 typedef struct int64_tArray { uint32_t *len; /* len + 1 is data */ } int64_tArray;
211 typedef struct uint32_tArray { uint32_t *len; /* len + 1 is data */ } uint32_tArray;
212 typedef struct ptrArray { uint32_t *len; /* len + 1 is data */ } ptrArray;
213 typedef struct int8_tArray { uint32_t *len; /* len + 1 is data */ } int8_tArray;
214 typedef struct jstring {} jstring;
216 jstring conv_owned_string(const char* _src) { jstring a; return a; }
218 typedef bool jboolean;
222 self.hu_struct_file_prefix = f"""
223 import CommonBase from './CommonBase';
224 import * as bindings from '../bindings' // TODO: figure out location
227 self.c_fn_ty_pfx = ""
228 self.c_fn_name_pfx = ""
229 self.c_fn_args_pfx = "void* ctx_TODO"
230 self.file_ext = ".ts"
231 self.ptr_c_ty = "uint32_t"
232 self.ptr_native_ty = "uint32_t"
233 self.result_c_ty = "uint32_t"
234 self.owned_str_to_c_call = ("conv_owned_string(", ")")
235 self.ptr_arr = "ptrArray"
236 self.get_native_arr_len_call = ("*", ".len")
238 def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
240 def create_native_arr_call(self, arr_len, ty_info):
241 if ty_info.c_ty == "int8_tArray":
242 return "{ .len = MALLOC(" + arr_len + " + sizeof(uint32_t), \"Native " + ty_info.c_ty + " Bytes\") }"
243 elif ty_info.c_ty == "int64_tArray":
244 return "{ .len = MALLOC(" + arr_len + " * sizeof(int64_t) + sizeof(uint32_t), \"Native " + ty_info.c_ty + " Bytes\") }"
245 elif ty_info.c_ty == "uint32_tArray":
246 return "{ .len = MALLOC(" + arr_len + " * sizeof(int32_t) + sizeof(uint32_t), \"Native " + ty_info.c_ty + " Bytes\") }"
247 elif ty_info.c_ty == "ptrArray":
248 assert ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array")
249 return "{ .len = MALLOC(" + arr_len + " * sizeof(int32_t) + sizeof(uint32_t), \"Native Object Bytes\") }"
251 print("Need to create arr!", ty_info.c_ty)
253 def set_native_arr_contents(self, arr_name, arr_len, ty_info):
254 if ty_info.c_ty == "int8_tArray":
255 return ("memcpy(" + arr_name + ".len + 1, ", ", " + arr_len + ")")
258 def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy):
259 if ty_info.c_ty == "int8_tArray":
261 return "memcpy(" + dest_name + ", " + arr_name + ".len + 1, " + arr_len + ")"
263 return "(int8_t*)(" + arr_name + ".len + 1)"
265 return "(" + ty_info.subty.c_ty + "*)(" + arr_name + ".len + 1)"
266 def get_native_arr_elem(self, arr_name, idxc, ty_info):
267 assert False # Only called if above is None
268 def get_native_arr_ptr_call(self, ty_info):
269 if ty_info.subty is not None:
270 return "(" + ty_info.subty.c_ty + "*)(", ".len + 1)"
271 return "(" + ty_info.c_ty + "*)(", ".len + 1)"
272 def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access):
274 def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info):
275 if ty_info.c_ty == "int8_tArray":
281 def wasm_import_header(self, target):
282 if target == Target.NODEJS:
284 import * as fs from 'fs';
285 const source = fs.readFileSync('./ldk.wasm');
287 const memory = new WebAssembly.Memory({initial: 256});
288 const wasmModule = new WebAssembly.Module(source);
290 const imports: any = {};
293 imports.env.memoryBase = 0;
294 imports.env.memory = memory;
295 imports.env.tableBase = 0;
296 imports.env.table = new WebAssembly.Table({initial: 4, element: 'anyfunc'});
298 imports.env["abort"] = function () {
299 console.error("ABORT");
302 const wasmInstance = await WebAssembly.instantiate(wasmModule, imports)
303 const wasm = wasmInstance.exports;
307 const nextMultipleOfFour = (value: number) => {
308 return Math.ceil(value / 4) * 4;
311 const encodeArray = (inputArray) => {
312 // TODO: (matt) is this correct, or should it go back to length * 4?
313 // const cArrayPointer = wasm.wasm_malloc(inputArray.length * 4);
314 const cArrayPointer = wasm.wasm_malloc(nextMultipleOfFour(inputArray.length));
316 const arrayMemoryView = new Uint32Array(memory.buffer, cArrayPointer, inputArray.length);
317 arrayMemoryView.set(inputArray);
318 return cArrayPointer;
321 const decodeArray = (arrayPointer, free = true) => {
322 const arraySizeViewer = new Uint32Array(
323 memory.buffer, // value
324 arrayPointer, // offset
327 const arraySize = arraySizeViewer[0];
328 const actualArrayViewer = new Uint32Array(
329 memory.buffer, // value
330 arrayPointer, // offset
333 const actualArray = actualArrayViewer.slice(1, arraySize + 1);
335 // wasm.free_array(arrayPointer);
336 wasm.wasm_free(arrayPointer); // TODO: check if passing *void still captures remaining values
341 const encodeString = (string) => {
342 // make malloc count divisible by 4
343 const memoryNeed = nextMultipleOfFour(string.length + 1);
344 const stringPointer = wasm.wasm_malloc(memoryNeed);
345 const stringMemoryView = new Uint8Array(
346 memory.buffer, // value
347 stringPointer, // offset
348 string.length + 1 // length
350 for (let i = 0; i < string.length; i++) {
351 stringMemoryView[i] = string.charCodeAt(i);
353 stringMemoryView[string.length] = 0;
354 return stringPointer;
357 const decodeString = (stringPointer, free = true) => {
358 const memoryView = new Uint8Array(memory.buffer, stringPointer);
362 while (memoryView[cursor] !== 0) {
363 result += String.fromCharCode(memoryView[cursor]);
368 wasm.wasm_free(stringPointer);
379 def native_c_unitary_enum_map(self, struct_name, variants):
380 out_c = "static inline " + struct_name + " " + struct_name + "_from_js(int32_t ord) {\n"
381 out_c = out_c + "\tswitch (ord) {\n"
384 out_typescript_enum_fields = ""
387 out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var)
389 out_typescript_enum_fields += f"{var},\n\t\t\t\t"
390 out_c = out_c + "\t}\n"
391 out_c = out_c + "\tabort();\n"
392 out_c = out_c + "}\n"
394 out_c = out_c + "static inline int32_t " + struct_name + "_to_js(" + struct_name + " val) {\n"
395 out_c = out_c + "\tswitch (val) {\n"
398 out_c = out_c + "\t\tcase " + var + ": return %d;\n" % ord_v
400 out_c = out_c + "\t\tdefault: abort();\n"
401 out_c = out_c + "\t}\n"
402 out_c = out_c + "}\n"
404 out_typescript_enum = f"""
405 export enum {struct_name} {{
406 {out_typescript_enum_fields}
410 return (out_c, out_typescript_enum, "")
412 def c_unitary_enum_to_native_call(self, ty_info):
413 return (ty_info.rust_obj + "_to_js(", ")")
414 def native_unitary_enum_to_c_call(self, ty_info):
415 return (ty_info.rust_obj + "_from_js(", ")")
417 def c_complex_enum_pass_ty(self, struct_name):
420 def c_constr_native_complex_enum(self, struct_name, variant, c_params):
421 ret = "0 /* " + struct_name + " - " + variant + " */"
422 for param in c_params:
423 ret = ret + "; (void) " + param
426 def native_c_map_trait(self, struct_name, field_var_conversions, field_function_lines):
427 out_typescript_bindings = "\n\n\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: START\n\n"
429 constructor_arguments = ""
430 super_instantiator = ""
431 pointer_to_adder = ""
432 impl_constructor_arguments = ""
433 for var in field_var_conversions:
434 if isinstance(var, ConvInfo):
435 constructor_arguments += f", {first_to_lower(var.arg_name)}?: {var.java_hu_ty}"
436 impl_constructor_arguments += f", {var.arg_name}: {var.java_hu_ty}"
437 if var.from_hu_conv is not None:
438 super_instantiator += ", " + var.from_hu_conv[0]
439 if var.from_hu_conv[1] != "":
440 pointer_to_adder += var.from_hu_conv[1] + ";\n"
442 super_instantiator += ", " + first_to_lower(var.arg_name)
444 constructor_arguments += f", {first_to_lower(var[1])}?: bindings.{var[0]}"
445 super_instantiator += ", " + first_to_lower(var[1])
446 pointer_to_adder += "this.ptrs_to.push(" + first_to_lower(var[1]) + ");\n"
447 impl_constructor_arguments += f", {first_to_lower(var[1])}_impl: {var[0].replace('LDK', '')}.{var[0].replace('LDK', '')}Interface"
449 # BUILD INTERFACE METHODS
450 out_java_interface = ""
451 out_interface_implementation_overrides = ""
453 for fn_line in field_function_lines:
454 java_method_descriptor = ""
455 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
456 out_java_interface += fn_line.fn_name + "("
457 out_interface_implementation_overrides += f"{fn_line.fn_name} ("
459 for idx, arg_conv_info in enumerate(fn_line.args_ty):
461 out_java_interface += ", "
462 out_interface_implementation_overrides += ", "
463 out_java_interface += f"{arg_conv_info.arg_name}: {arg_conv_info.java_hu_ty}"
464 out_interface_implementation_overrides += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
465 java_method_descriptor += arg_conv_info.java_fn_ty_arg
466 out_java_interface += f"): {fn_line.ret_ty_info.java_hu_ty};\n\t\t\t\t"
467 java_method_descriptor += ")" + fn_line.ret_ty_info.java_fn_ty_arg
468 java_methods.append((fn_line.fn_name, java_method_descriptor))
470 out_interface_implementation_overrides += f"): {fn_line.ret_ty_info.java_ty} {{\n"
472 interface_method_override_inset = "\t\t\t\t\t\t"
473 interface_implementation_inset = "\t\t\t\t\t\t\t"
474 for arg_info in fn_line.args_ty:
475 if arg_info.to_hu_conv is not None:
476 out_interface_implementation_overrides += interface_implementation_inset + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n"
478 if fn_line.ret_ty_info.java_ty != "void":
479 out_interface_implementation_overrides += interface_implementation_inset + fn_line.ret_ty_info.java_hu_ty + " ret = arg." + fn_line.fn_name + "("
481 out_interface_implementation_overrides += f"{interface_implementation_inset}arg." + fn_line.fn_name + "("
483 for idx, arg_info in enumerate(fn_line.args_ty):
485 out_interface_implementation_overrides += ", "
486 if arg_info.to_hu_conv_name is not None:
487 out_interface_implementation_overrides += arg_info.to_hu_conv_name
489 out_interface_implementation_overrides += arg_info.arg_name
491 out_interface_implementation_overrides += ");\n"
492 if fn_line.ret_ty_info.java_ty != "void":
493 if fn_line.ret_ty_info.from_hu_conv is not None:
494 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"
495 if fn_line.ret_ty_info.from_hu_conv[1] != "":
496 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"
497 #if fn_line.ret_ty_info.rust_obj in result_types:
498 # XXX: We need to handle this in conversion logic so that its cross-language!
499 # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead
500 # out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\tret.ptr = 0;\n"
501 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\treturn result;\n"
503 out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\treturn ret;\n"
504 out_interface_implementation_overrides += f"{interface_method_override_inset}}},\n\n{interface_method_override_inset}"
506 trait_constructor_arguments = ""
507 for var in field_var_conversions:
508 if isinstance(var, ConvInfo):
509 trait_constructor_arguments += ", " + var.arg_name
511 trait_constructor_arguments += ", " + var[1] + ".new_impl(" + var[1] + "_impl).bindings_instance"
513 out_typescript_human = f"""
514 {self.hu_struct_file_prefix}
516 export class {struct_name.replace("LDK","")} extends CommonBase {{
518 bindings_instance?: bindings.{struct_name};
520 constructor(ptr?: number, arg?: bindings.{struct_name}{constructor_arguments}) {{
521 if (Number.isFinite(ptr)) {{
523 this.bindings_instance = null;
525 // TODO: private constructor instantiation
526 super(bindings.{struct_name}_new(arg{super_instantiator}));
527 this.ptrs_to.push(arg);
532 protected finalize() {{
533 if (this.ptr != 0) {{
534 bindings.{struct_name.replace("LDK","")}_free(this.ptr);
539 static new_impl(arg: {struct_name.replace("LDK", "")}Interface{impl_constructor_arguments}): {struct_name.replace("LDK", "")} {{
540 const impl_holder: {struct_name}Holder = new {struct_name}Holder();
541 let structImplementation = <bindings.{struct_name}>{{
542 // todo: in-line interface filling
543 {out_interface_implementation_overrides}
545 impl_holder.held = new {struct_name.replace("LDK", "")} (null, structImplementation{trait_constructor_arguments});
549 export interface {struct_name.replace("LDK", "")}Interface {{
553 class {struct_name}Holder {{
554 held: {struct_name.replace("LDK", "")};
558 out_typescript_bindings += "\t\texport interface " + struct_name + " {\n"
560 for fn_line in field_function_lines:
561 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
562 out_typescript_bindings += f"\t\t\t{fn_line.fn_name} ("
564 for idx, arg_conv_info in enumerate(fn_line.args_ty):
566 out_typescript_bindings = out_typescript_bindings + ", "
567 out_typescript_bindings += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
569 out_typescript_bindings += f"): {fn_line.ret_ty_info.java_ty};\n"
571 out_typescript_bindings = out_typescript_bindings + "\t\t}\n\n"
573 out_typescript_bindings += f"\t\texport function {struct_name}_new(impl: {struct_name}"
574 for var in field_var_conversions:
575 if isinstance(var, ConvInfo):
576 out_typescript_bindings += f", {var.arg_name}: {var.java_ty}"
578 out_typescript_bindings += f", {var[1]}: {var[0]}"
580 out_typescript_bindings += f"""): number {{
581 throw new Error('unimplemented'); // TODO: bind to WASM
585 out_typescript_bindings += '\n// OUT_TYPESCRIPT_BINDINGS :: MAP_TRAIT :: END\n\n\n'
587 # Now that we've written out our java code (and created java_meths), generate C
588 out_c = "typedef struct " + struct_name + "_JCalls {\n"
589 out_c = out_c + "\tatomic_size_t refcnt;\n"
590 out_c = out_c + "\t// TODO: Object pointer o;\n"
591 for var in field_var_conversions:
592 if isinstance(var, ConvInfo):
593 # We're a regular ol' field
597 out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n"
598 for fn in field_function_lines:
599 if fn.fn_name != "free" and fn.fn_name != "clone":
600 out_c = out_c + "\t// TODO: Some kind of method pointer " + fn.fn_name + "_meth;\n"
601 out_c = out_c + "} " + struct_name + "_JCalls;\n"
603 for fn_line in field_function_lines:
604 if fn_line.fn_name == "free":
605 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
606 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
607 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
608 out_c = out_c + "\t\t// TODO: do any release required for j_calls->o (refcnt-- in java, but may be redundant)\n"
609 out_c = out_c + "\t\tFREE(j_calls);\n"
610 out_c = out_c + "\t}\n}\n"
612 for idx, fn_line in enumerate(field_function_lines):
613 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
614 assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == ""
615 out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_jcall("
616 if fn_line.self_is_const:
617 out_c = out_c + "const void* this_arg"
619 out_c = out_c + "void* this_arg"
621 for idx, arg in enumerate(fn_line.args_ty):
622 out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1]
624 out_c = out_c + ") {\n"
625 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
627 for arg_info in fn_line.args_ty:
628 if arg_info.ret_conv is not None:
629 out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t')
630 out_c = out_c + arg_info.arg_name
631 out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n"
633 out_c = out_c + "\t//TODO: jobject obj = get object we can call against on j_calls->o\n"
634 if fn_line.ret_ty_info.c_ty.endswith("Array"):
635 out_c = out_c + "\t" + fn_line.ret_ty_info.c_ty + " arg; // TODO: Call " + fn_line.fn_name + " on j_calls with instance obj, returning an object"
636 elif fn_line.ret_ty_info.java_ty == "void":
637 out_c = out_c + "\treturn; //TODO: Call " + fn_line.fn_name + " on j_calls with instance obj"
638 elif not fn_line.ret_ty_info.passed_as_ptr:
639 out_c = out_c + "\treturn 0; //TODO: Call " + fn_line.fn_name + " on j_calls with instance obj, returning " + fn_line.ret_ty_info.java_ty
641 out_c = out_c + "\t" + fn_line.ret_ty_info.rust_obj + "* ret; // TODO: Call " + fn_line.fn_name + " on j_calls with instance obj, returning a pointer"
643 for idx, arg_info in enumerate(fn_line.args_ty):
644 if arg_info.ret_conv is not None:
645 out_c = out_c + ", " + arg_info.ret_conv_name
647 out_c = out_c + ", " + arg_info.arg_name
648 out_c = out_c + ");\n"
649 if fn_line.ret_ty_info.arg_conv is not None:
650 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"
652 out_c = out_c + "}\n"
654 # Write out a clone function whether we need one or not, as we use them in moving to rust
655 out_c = out_c + "static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n"
656 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
657 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n"
658 for var in field_var_conversions:
659 if not isinstance(var, ConvInfo):
660 out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n"
661 out_c = out_c + "\treturn (void*) this_arg;\n"
662 out_c = out_c + "}\n"
664 out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (" + self.c_fn_args_pfx + ", /*TODO: JS Object Reference */void* o"
665 for var in field_var_conversions:
666 if isinstance(var, ConvInfo):
667 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
669 out_c = out_c + ", /*TODO: JS Object Reference */void* " + var[1]
670 out_c = out_c + ") {\n"
672 out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n"
673 out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n"
674 out_c = out_c + "\t//TODO: Assign calls->o from o\n"
676 for (fn_name, java_meth_descr) in java_meths:
677 if fn_name != "free" and fn_name != "clone":
678 out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n"
679 out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n"
681 for var in field_var_conversions:
682 if isinstance(var, ConvInfo) and var.arg_conv is not None:
683 out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n"
684 out_c = out_c + "\n\t" + struct_name + " ret = {\n"
685 out_c = out_c + "\t\t.this_arg = (void*) calls,\n"
686 for fn_line in field_function_lines:
687 if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
688 out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_jcall,\n"
689 elif fn_line.fn_name == "free":
690 out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n"
692 out_c = out_c + "\t\t.clone = " + struct_name + "_JCalls_clone,\n"
693 for var in field_var_conversions:
694 if isinstance(var, ConvInfo):
695 if var.arg_conv_name is not None:
696 out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n"
697 out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n"
699 out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n"
700 out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n"
702 out_c = out_c + "\t\t." + var[1] + " = " + var[0] + "_init(NULL, " + var[1] + "),\n"
703 out_c = out_c + "\t};\n"
704 for var in field_var_conversions:
705 if not isinstance(var, ConvInfo):
706 out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n"
707 out_c = out_c + "\treturn ret;\n"
708 out_c = out_c + "}\n"
710 out_c = out_c + self.c_fn_ty_pfx + "long " + self.c_fn_name_pfx + struct_name.replace("_", "_1") + "_1new (" + self.c_fn_args_pfx + ", /*TODO: JS Object Reference */void* o"
711 for var in field_var_conversions:
712 if isinstance(var, ConvInfo):
713 out_c = out_c + ", " + var.c_ty + " " + var.arg_name
715 out_c = out_c + ", /*TODO: JS Object Reference */ void* " + var[1]
716 out_c = out_c + ") {\n"
717 out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n"
718 out_c = out_c + "\t*res_ptr = " + struct_name + "_init(NULL, o"
719 for var in field_var_conversions:
720 if isinstance(var, ConvInfo):
721 out_c = out_c + ", " + var.arg_name
723 out_c = out_c + ", " + var[1]
724 out_c = out_c + ");\n"
725 out_c = out_c + "\treturn (long)res_ptr;\n"
726 out_c = out_c + "}\n"
728 return (out_typescript_bindings, out_typescript_human, out_c)
730 def trait_struct_inc_refcnt(self, ty_info):
733 def map_complex_enum(self, struct_name, variant_list, camel_to_snake):
734 java_hu_type = struct_name.replace("LDK", "")
740 out_java_enum += (self.hu_struct_file_prefix)
741 out_java_enum += ("export default class " + java_hu_type + " extends CommonBase {\n")
742 out_java_enum += ("\tprotected constructor(_dummy: object, ptr: number) { super(ptr); }\n")
743 out_java_enum += ("\tprotected finalize() {\n")
744 out_java_enum += ("\t\tsuper.finalize();\n")
745 out_java_enum += ("\t\tif (this.ptr != 0) { bindings." + java_hu_type + "_free(this.ptr); }\n")
746 out_java_enum += ("\t}\n")
747 out_java_enum += f"\tstatic constr_from_ptr(ptr: number): {java_hu_type} {{\n"
748 out_java_enum += (f"\t\tconst raw_val: bindings.{struct_name} = bindings." + struct_name + "_ref_from_ptr(ptr);\n")
749 java_hu_subclasses = ""
751 out_java += ("\tpublic static class " + struct_name + " {\n")
752 out_java += ("\t\tprivate " + struct_name + "() {}\n")
753 for var in variant_list:
754 out_java += ("\t\texport class " + var.var_name + " extends " + struct_name + " {\n")
755 java_hu_subclasses = java_hu_subclasses + "export class " + var.var_name + " extends " + java_hu_type + " {\n"
756 out_java_enum += ("\t\tif (raw_val instanceof bindings." + struct_name + "." + var.var_name + ") {\n")
757 out_java_enum += ("\t\t\treturn new " + var.var_name + "(this.ptr, raw_val);\n")
758 init_meth_params = ""
761 for idx, field_ty in enumerate(var.fields):
762 out_java += ("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.arg_name + ";\n")
763 java_hu_subclasses = java_hu_subclasses + "\tpublic " + field_ty.arg_name + f": {field_ty.java_hu_ty};\n"
764 if field_ty.to_hu_conv is not None:
765 hu_conv_body = hu_conv_body + "\t\tconst " + field_ty.arg_name + f": {field_ty.java_ty} = obj." + field_ty.arg_name + ";\n"
766 hu_conv_body = hu_conv_body + "\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n"
767 hu_conv_body = hu_conv_body + "\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n"
769 hu_conv_body = hu_conv_body + "\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n"
771 init_meth_params = init_meth_params + ", "
772 init_meth_params = init_meth_params + field_ty.java_ty + " " + field_ty.arg_name
773 init_meth_body = init_meth_body + "this." + field_ty.arg_name + " = " + field_ty.arg_name + "; "
774 out_java += ("\t\t\t" + var.var_name + "(" + init_meth_params + ") { ")
775 out_java += (init_meth_body)
777 out_java += ("\t\t}\n")
778 out_java_enum += ("\t\t}\n")
779 java_hu_subclasses = java_hu_subclasses + "\tprivate constructor(ptr: number, obj: bindings." + struct_name + "." + var.var_name + ") {\n\t\tsuper(null, ptr);\n"
780 java_hu_subclasses = java_hu_subclasses + hu_conv_body
781 java_hu_subclasses = java_hu_subclasses + "\t}\n}\n"
782 out_java += ("\t\tstatic native void init();\n")
783 out_java += ("\t}\n")
784 out_java_enum += ("\t\tthrow new Error('oops, this should be unreachable'); // Unreachable without extending the (internal) bindings interface\n\t}\n\n")
785 out_java += ("\tstatic { " + struct_name + ".init(); }\n")
786 out_java += ("\tpublic static native " + struct_name + " " + struct_name + "_ref_from_ptr(long ptr);\n");
788 out_c += (self.c_fn_ty_pfx + self.c_complex_enum_pass_ty(struct_name) + " " + self.c_fn_name_pfx + struct_name.replace("_", "_1") + "_1ref_1from_1ptr (" + self.c_fn_args_pfx + ", " + self.ptr_c_ty + " ptr) {\n")
789 out_c += ("\t" + struct_name + " *obj = (" + struct_name + "*)ptr;\n")
790 out_c += ("\tswitch(obj->tag) {\n")
791 for var in variant_list:
792 out_c += ("\t\tcase " + struct_name + "_" + var.var_name + ": {\n")
794 for idx, field_map in enumerate(var.fields):
795 if field_map.ret_conv is not None:
796 out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
797 out_c += ("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
798 out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n")
799 c_params.append(field_map.ret_conv_name)
801 c_params.append("obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name)
802 out_c += ("\t\t\treturn " + self.c_constr_native_complex_enum(struct_name, var.var_name, c_params) + ";\n")
804 out_c += ("\t\tdefault: abort();\n")
805 out_c += ("\t}\n}\n")
806 out_java_enum += ("}\n")
807 out_java_enum += (java_hu_subclasses)
808 return (out_java, out_java_enum, out_c)
810 def map_opaque_struct(self, struct_name):
813 if struct_name.startswith("LDKLocked"):
814 implementations += "implements AutoCloseable "
820 protected finalize() {
824 out_opaque_struct_human = f"""
825 {self.hu_struct_file_prefix}
827 export default class {struct_name.replace("LDK","")} extends CommonBase {implementations}{{
828 constructor(_dummy: object, ptr: number) {{
833 if (this.ptr != 0) {{
834 bindings.{struct_name.replace("LDK","")}_free(this.ptr);
838 return out_opaque_struct_human
840 def map_function(self, argument_types, c_call_string, is_free, method_name, return_type_info, struct_meth, default_constructor_args, takes_self, args_known, has_out_java_struct: bool, type_mapping_generator):
843 out_java_struct = None
845 out_java += ("\tpublic static native ")
846 out_c += (self.c_fn_ty_pfx)
847 out_c += (return_type_info.c_ty)
848 out_java += (return_type_info.java_ty)
849 if return_type_info.ret_conv is not None:
850 ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv
851 out_java += (" " + method_name + "(")
852 out_c += (" " + self.c_fn_name_pfx + method_name.replace('_', '_1') + "(" + self.c_fn_args_pfx)
854 method_argument_string = ""
855 native_call_argument_string = ""
856 for idx, arg_conv_info in enumerate(argument_types):
858 method_argument_string += (", ")
859 native_call_argument_string += ', '
860 if arg_conv_info.c_ty != "void":
862 if arg_conv_info.c_ty != "void":
863 out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name)
864 needs_encoding = arg_conv_info.c_ty in self.wasm_encoding_map
865 native_argument = arg_conv_info.arg_name
867 converter = self.wasm_encoding_map[arg_conv_info.c_ty]
868 native_argument = f"{converter}({arg_conv_info.arg_name})"
869 method_argument_string += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}"
870 native_call_argument_string += native_argument
872 needs_decoding = return_type_info.c_ty in self.wasm_decoding_map
873 return_value = 'nativeResponseValue'
875 converter = self.wasm_decoding_map[return_type_info.c_ty]
876 return_value = f"{converter}(nativeResponseValue)"
878 out_java = f"""\texport function {method_name}({method_argument_string}): {return_type_info.java_ty} {{
879 const nativeResponseValue = wasm.{method_name}({native_call_argument_string});
880 return {return_value};
886 if has_out_java_struct:
889 out_java_struct += ("\t// Skipped " + method_name + "\n")
890 has_out_java_struct = False
892 meth_n = method_name[len(struct_meth) + 1:]
895 "\tpublic static " + return_type_info.java_hu_ty + " constructor_" + meth_n + "(")
897 out_java_struct += ("\tpublic " + return_type_info.java_hu_ty + " " + meth_n + "(")
898 for idx, arg in enumerate(argument_types):
900 if not takes_self or idx > 1:
901 out_java_struct += (", ")
904 if arg.java_ty != "void":
905 if arg.arg_name in default_constructor_args:
906 for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]):
908 out_java_struct += (", ")
910 explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name)
912 out_java_struct += (arg.java_hu_ty + " " + arg.arg_name)
915 if out_java_struct is not None:
916 out_java_struct += (") {\n")
917 for info in argument_types:
918 if info.arg_conv is not None:
919 out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
920 if return_type_info.ret_conv is not None:
921 out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t'))
922 elif return_type_info.c_ty != "void":
923 out_c += ("\t" + return_type_info.c_ty + " ret_val = ")
926 if c_call_string is None:
927 out_c += (method_name + "(")
929 out_c += (c_call_string)
930 for idx, info in enumerate(argument_types):
931 if info.arg_conv_name is not None:
934 elif c_call_string is not None:
936 out_c += (info.arg_conv_name)
938 if return_type_info.ret_conv is not None:
939 out_c += (ret_conv_sfx.replace('\n', '\n\t'))
942 for info in argument_types:
943 if info.arg_conv_cleanup is not None:
944 out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
945 if return_type_info.ret_conv is not None:
946 out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";")
947 elif return_type_info.c_ty != "void":
948 out_c += ("\n\treturn ret_val;")
951 if has_out_java_struct:
952 out_java_struct += ("\t\t")
953 if return_type_info.java_ty != "void":
954 out_java_struct += (return_type_info.java_ty + " ret = ")
955 out_java_struct += ("bindings." + method_name + "(")
956 for idx, info in enumerate(argument_types):
958 out_java_struct += (", ")
959 if idx == 0 and takes_self:
960 out_java_struct += ("this.ptr")
961 elif info.arg_name in default_constructor_args:
962 out_java_struct += ("bindings." + info.java_hu_ty + "_new(")
963 for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]):
965 out_java_struct += (", ")
966 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
967 if explode_arg.from_hu_conv is not None:
969 explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name))
971 out_java_struct += (expl_arg_name)
972 out_java_struct += (")")
973 elif info.from_hu_conv is not None:
974 out_java_struct += (info.from_hu_conv[0])
976 out_java_struct += (info.arg_name)
977 out_java_struct += (");\n")
978 if return_type_info.to_hu_conv is not None:
980 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this",
981 return_type_info.to_hu_conv_name) + "\n")
983 out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n")
985 for idx, info in enumerate(argument_types):
986 if idx == 0 and takes_self:
988 elif info.arg_name in default_constructor_args:
989 for explode_arg in default_constructor_args[info.arg_name]:
990 expl_arg_name = info.arg_name + "_" + explode_arg.arg_name
991 if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name:
992 out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name,
993 expl_arg_name).replace(
994 "this", return_type_info.to_hu_conv_name) + ";\n")
995 elif info.from_hu_conv is not None and info.from_hu_conv[1] != "":
996 if not takes_self and return_type_info.to_hu_conv_name is not None:
998 "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name) + ";\n")
1000 out_java_struct += ("\t\t" + info.from_hu_conv[1] + ";\n")
1002 if return_type_info.to_hu_conv_name is not None:
1003 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
1004 elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth:
1005 out_java_struct += ("\t\treturn ret;\n")
1006 out_java_struct += ("\t}\n\n")
1008 return (out_java, out_c, out_java_struct)