From: Matt Corallo Date: Wed, 18 Jan 2023 18:43:57 +0000 (+0000) Subject: [Python] Add python bindings hooks X-Git-Tag: v0.0.115.0~10 X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=f8f3544e5c1e8ed55b15b54cd0f3c85a7f2c3e14;p=ldk-java [Python] Add python bindings hooks --- diff --git a/genbindings.py b/genbindings.py index 10416ab9..4ce0240c 100755 --- a/genbindings.py +++ b/genbindings.py @@ -30,8 +30,12 @@ elif sys.argv[6] == "c_sharp": import csharp_strings from csharp_strings import Consts target = csharp_strings.Target.CSHARP +elif sys.argv[6] == "python": + import python_strings + from python_strings import Consts + target = python_strings.Target.PYTHON else: - print("Only java, typescript, or c_sharp can be set for lang") + print("Only java, typescript, python, or c_sharp can be set for lang") sys.exit(1) diff --git a/genbindings.sh b/genbindings.sh index ed326fcc..e2952f73 100755 --- a/genbindings.sh +++ b/genbindings.sh @@ -121,9 +121,74 @@ if [ "$2" = "c_sharp" ]; then $COMPILE $LINK -o liblightningjni_debug$LDK_TARGET_SUFFIX.so -g -fsanitize=address -shared-libasan -rdynamic -I"$1"/lightning-c-bindings/include/ $2 c_sharp/bindings.c "$1"/lightning-c-bindings/target/$LDK_TARGET/debug/libldk.a -lm else $COMPILE -o bindings.o -c -flto -O3 -I"$1"/lightning-c-bindings/include/ $2 c_sharp/bindings.c - $COMPILE $LINK -o liblightningjni_release$LDK_TARGET_SUFFIX.so -Wl,--version-script=c_sharp/libcode.version -flto -O3 -Wl,--lto-O3 -Wl,-O3 -Wl,--version-script=c_sharp/libcode.version -I"$1"/lightning-c-bindings/include/ $2 bindings.o "$1"/lightning-c-bindings/target/$LDK_TARGET/release/libldk.a -lm + $COMPILE $LINK -o liblightningjni_release$LDK_TARGET_SUFFIX.so -flto -O3 -Wl,--lto-O3 -Wl,-O3 -Wl,--version-script=c_sharp/libcode.version -I"$1"/lightning-c-bindings/include/ $2 bindings.o "$1"/lightning-c-bindings/target/$LDK_TARGET/release/libldk.a -lm llvm-strip liblightningjni_release$LDK_TARGET_SUFFIX.so fi +elif [ "$2" = "python" ]; then + TARGET_STRING="$LDK_TARGET" + if [ "$TARGET_STRING" = "" ]; then + # We assume clang-style $CC --version here, but worst-case we just get an empty suffix + TARGET_STRING="$($CC --version | grep Target | awk '{ print $2 }')" + fi + case "$TARGET_STRING" in + "x86_64-pc-linux"*) + LDK_TARGET_SUFFIX="_Linux-amd64" + LDK_JAR_TARGET=true + ;; + "x86_64-apple-darwin"*) + LDK_TARGET_SUFFIX="_MacOSX-x86_64" + LDK_JAR_TARGET=true + ;; + "aarch64-apple-darwin"*) + LDK_TARGET_CPU="apple-a14" + LDK_TARGET_SUFFIX="_MacOSX-aarch64" + LDK_JAR_TARGET=true + ;; + *) + LDK_TARGET_SUFFIX="_${TARGET_STRING}" + esac + if [ "$LDK_TARGET_CPU" = "" ]; then + LDK_TARGET_CPU="sandybridge" + fi + + echo "Creating Python bindings..." + mkdir -p python/src/{enums,structs,impl} + rm -f python/src/{enums,structs,impl}/*.py + ./genbindings.py "./lightning.h" python/src/impl python/src python/ $DEBUG_ARG python $4 + rm -f python/bindings.c + if [ "$3" = "true" ]; then + echo "#define LDK_DEBUG_BUILD" > python/bindings.c + elif [ "$3" = "leaks" ]; then + # For leak checking we use release libldk which doesn't expose + # __unmangle_inner_ptr, but the C code expects to be able to call it. + echo "#define __unmangle_inner_ptr(a) (a)" > python/bindings.c + fi + echo "#define LDKCVec_C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZZ LDKCVec_TransactionOutputsZ" >> python/bindings.c + echo "#define CVec_C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZZ_free CVec_TransactionOutputsZ_free" >> python/bindings.c + cat python/bindings.c.body >> python/bindings.c + + IS_MAC=false + [ "$($CC --version | grep apple-darwin)" != "" ] && IS_MAC=true + IS_APPLE_CLANG=false + [ "$($CC --version | grep "Apple clang version")" != "" ] && IS_APPLE_CLANG=true + + echo "Building Python bindings..." + COMPILE="$COMMON_COMPILE -mcpu=$LDK_TARGET_CPU -Isrc/main/jni -pthread -fPIC" + LINK="-ldl -shared" + [ "$IS_MAC" = "false" ] && LINK="$LINK -Wl,--no-undefined" + [ "$IS_MAC" = "true" ] && COMPILE="$COMPILE -mmacosx-version-min=10.9" + [ "$IS_MAC" = "true" -a "$IS_APPLE_CLANG" = "false" ] && LINK="$LINK -fuse-ld=lld" + [ "$IS_MAC" = "true" -a "$IS_APPLE_CLANG" = "false" ] && echo "WARNING: Need at least upstream clang 13!" + [ "$IS_MAC" = "false" -a "$3" != "false" ] && LINK="$LINK -Wl,-wrap,calloc -Wl,-wrap,realloc -Wl,-wrap,malloc -Wl,-wrap,free" + + exit 0 # Sadly compilation doesn't currently work + if [ "$3" = "true" ]; then + $COMPILE $LINK -o liblightningpython_debug$LDK_TARGET_SUFFIX.so -g -fsanitize=address -shared-libasan -rdynamic -I"$1"/lightning-c-bindings/include/ $2 c_sharp/bindings.c "$1"/lightning-c-bindings/target/$LDK_TARGET/debug/libldk.a -lm + else + $COMPILE -o bindings.o -c -flto -O3 -I"$1"/lightning-c-bindings/include/ $2 c_sharp/bindings.c + $COMPILE $LINK -o liblightningpython_release$LDK_TARGET_SUFFIX.so -Wl,--version-script=python/libcode.version -flto -O3 -Wl,--lto-O3 -Wl,-O3 -I"$1"/lightning-c-bindings/include/ $2 bindings.o "$1"/lightning-c-bindings/target/$LDK_TARGET/release/libldk.a -lm + llvm-strip liblightningpython_release$LDK_TARGET_SUFFIX.so + fi elif [ "$2" = "wasm" ]; then echo "Creating TS bindings..." mkdir -p ts/{enums,structs} diff --git a/python_strings.py b/python_strings.py new file mode 100644 index 00000000..752b3015 --- /dev/null +++ b/python_strings.py @@ -0,0 +1,1588 @@ +from bindingstypes import ConvInfo +from enum import Enum + +def first_to_lower(string: str) -> str: + first = string[0] + return first.lower() + string[1:] + + +class Target(Enum): + PYTHON = 1, + +class Consts: + def __init__(self, DEBUG: bool, target: Target, outdir: str, **kwargs): + self.outdir = outdir + self.struct_file_suffixes = {} + self.function_ptr_counter = 0 + self.function_ptrs = {} + self.c_type_map = dict( + bool = ['bool', 'bool', 'XXX'], + uint8_t = ['int', 'int', 'Uint8Array'], + uint16_t = ['int', 'int', 'Uint16Array'], + uint32_t = ['int', 'int', 'Uint32Array'], + uint64_t = ['int', 'int', 'BigUint64Array'], + ) + self.java_type_map = dict( + String = "number" + ) + self.java_hu_type_map = dict( + String = "string" + ) + + self.to_hu_conv_templates = dict( + ptr = 'const {var_name}_hu_conv: {human_type} = new {human_type}(null, {var_name});', + default = 'const {var_name}_hu_conv: {human_type} = new {human_type}(null, {var_name});', + ) + + self.bindings_header = """ +import * as version from './version.mjs'; +import { UInt5, WitnessVersion } from './structs/CommonBase.mjs'; + +const imports: any = {}; +imports.env = {}; + +var js_objs: Array> = []; +var js_invoke: Function; +var getRandomValues: Function; + +imports.wasi_snapshot_preview1 = { + "fd_write": (fd: number, iovec_array_ptr: number, iovec_array_len: number, bytes_written_ptr: number) => { + // This should generally only be used to print panic messages + const ptr_len_view = new Uint32Array(wasm.memory.buffer, iovec_array_ptr, iovec_array_len * 2); + var bytes_written = 0; + for (var i = 0; i < iovec_array_len; i++) { + const bytes_view = new Uint8Array(wasm.memory.buffer, ptr_len_view[i*2], ptr_len_view[i*2+1]); + console.log("[fd " + fd + "]: " + String.fromCharCode(...bytes_view)); + bytes_written += ptr_len_view[i*2+1]!; + } + const written_view = new Uint32Array(wasm.memory.buffer, bytes_written_ptr, 1); + written_view[0] = bytes_written; + return 0; + }, + "fd_close": (_fd: number) => { + // This is not generally called, but may be referenced in debug builds + console.log("wasi_snapshot_preview1:fd_close"); + return 58; // Not Supported + }, + "fd_seek": (_fd: number, _offset: bigint, _whence: number, _new_offset: number) => { + // This is not generally called, but may be referenced in debug builds + console.log("wasi_snapshot_preview1:fd_seek"); + return 58; // Not Supported + }, + "random_get": (buf_ptr: number, buf_len: number) => { + const buf = new Uint8Array(wasm.memory.buffer, buf_ptr, buf_len); + getRandomValues(buf); + return 0; + }, + "environ_sizes_get": (environ_var_count_ptr: number, environ_len_ptr: number) => { + // This is called before fd_write to format + print panic messages + const out_count_view = new Uint32Array(wasm.memory.buffer, environ_var_count_ptr, 1); + out_count_view[0] = 0; + const out_len_view = new Uint32Array(wasm.memory.buffer, environ_len_ptr, 1); + out_len_view[0] = 0; + return 0; + }, + "environ_get": (_environ_ptr: number, _environ_buf_ptr: number) => { + // This is called before fd_write to format + print panic messages, + // but only if we have variables in environ_sizes_get, so shouldn't ever actually happen! + console.log("wasi_snapshot_preview1:environ_get"); + return 58; // Note supported - we said there were 0 environment entries! + }, + "proc_exit" : () => { + console.log("wasi_snapshot_preview1:proc_exit"); + }, +}; + +var wasm: any = null; +let isWasmInitialized: boolean = false; + +async function finishInitializeWasm(wasmInstance: WebAssembly.Instance) { + if (typeof crypto === "undefined") { + var crypto_import = (await import('crypto')).webcrypto; + getRandomValues = crypto_import.getRandomValues.bind(crypto_import); + } else { + getRandomValues = crypto.getRandomValues.bind(crypto); + } + + wasm = wasmInstance.exports; + if (!wasm.test_bigint_pass_deadbeef0badf00d(BigInt("0xdeadbeef0badf00d"))) { + throw new Error(\"Currently need BigInt-as-u64 support, try ----experimental-wasm-bigint"); + } + + if (decodeString(wasm.TS_get_lib_version_string()) !== version.get_ldk_java_bindings_version()) + throw new Error(\"Compiled LDK library and LDK class files do not match\"); + // Fetching the LDK versions from C also checks that the header and binaries match + const c_bindings_ver: number = wasm.TS_get_ldk_c_bindings_version(); + const ldk_ver: number = wasm.TS_get_ldk_version(); + if (c_bindings_ver == 0) + throw new Error(\"LDK version did not match the header we built against\"); + if (ldk_ver == 0) + throw new Error(\"LDK C bindings version did not match the header we built against\"); + const c_bindings_version: string = decodeString(c_bindings_ver) + const ldk_version: string = decodeString(ldk_ver); + console.log(\"Loaded LDK-Java Bindings with LDK \" + ldk_version + \" and LDK-C-Bindings \" + c_bindings_version); + + isWasmInitialized = true; +} + +const fn_list = ["uuuuuu", "buuuuu", "bbuuuu", "bbbuuu", "bbbbuu", + "bbbbbb", "ubuubu", "ubuuuu", "ubbuuu", "uubuuu", "uububu", "ububuu"]; + +/* @internal */ +export async function initializeWasmFromUint8Array(wasmBinary: Uint8Array) { + for (const fn of fn_list) { imports.env["js_invoke_function_" + fn] = js_invoke; } + const { instance: wasmInstance } = await WebAssembly.instantiate(wasmBinary, imports); + await finishInitializeWasm(wasmInstance); +} + +/* @internal */ +export async function initializeWasmFetch(uri: string) { + for (const fn of fn_list) { imports.env["js_invoke_function_" + fn] = js_invoke; } + const stream = fetch(uri); + const { instance: wasmInstance } = await WebAssembly.instantiateStreaming(stream, imports); + await finishInitializeWasm(wasmInstance); +}""" + + self.bindings_header += """ +// WASM CODEC + +/* @internal */ +export function uint5ArrToBytes(inputArray: Array): Uint8Array { + const arr = new Uint8Array(inputArray.length); + for (var i = 0; i < inputArray.length; i++) { + arr[i] = inputArray[i]!.getVal(); + } + return arr; +} + +/* @internal */ +export function WitnessVersionArrToBytes(inputArray: Array): Uint8Array { + const arr = new Uint8Array(inputArray.length); + for (var i = 0; i < inputArray.length; i++) { + arr[i] = inputArray[i]!.getVal(); + } + return arr; +} + + + +/* @internal */ +export function encodeUint128 (inputVal: bigint): number { + if (inputVal >= 0x10000000000000000000000000000000n) throw "U128s cannot exceed 128 bits"; + const cArrayPointer = wasm.TS_malloc(16 + 8); + const arrayLengthView = new BigUint64Array(wasm.memory.buffer, cArrayPointer, 1); + arrayLengthView[0] = BigInt(16); + const arrayMemoryView = new Uint8Array(wasm.memory.buffer, cArrayPointer + 8, 16); + for (var i = 0; i < 16; i++) arrayMemoryView[i] = Number((inputVal >> BigInt(i)*8n) & 0xffn); + return cArrayPointer; +} +/* @internal */ +export function encodeUint8Array (inputArray: Uint8Array|null): number { + if (inputArray == null) return 0; + const cArrayPointer = wasm.TS_malloc(inputArray.length + 8); + const arrayLengthView = new BigUint64Array(wasm.memory.buffer, cArrayPointer, 1); + arrayLengthView[0] = BigInt(inputArray.length); + const arrayMemoryView = new Uint8Array(wasm.memory.buffer, cArrayPointer + 8, inputArray.length); + arrayMemoryView.set(inputArray); + return cArrayPointer; +} +/* @internal */ +export function encodeUint32Array (inputArray: Uint32Array|Array|null): number { + if (inputArray == null) return 0; + const cArrayPointer = wasm.TS_malloc((inputArray.length + 2) * 4); + const arrayLengthView = new BigUint64Array(wasm.memory.buffer, cArrayPointer, 1); + arrayLengthView[0] = BigInt(inputArray.length); + const arrayMemoryView = new Uint32Array(wasm.memory.buffer, cArrayPointer + 8, inputArray.length); + arrayMemoryView.set(inputArray); + return cArrayPointer; +} +/* @internal */ +export function encodeUint64Array (inputArray: BigUint64Array|Array|null): number { + if (inputArray == null) return 0; + const cArrayPointer = wasm.TS_malloc((inputArray.length + 1) * 8); + const arrayMemoryView = new BigUint64Array(wasm.memory.buffer, cArrayPointer, inputArray.length + 1); + arrayMemoryView[0] = BigInt(inputArray.length); + arrayMemoryView.set(inputArray, 1); + return cArrayPointer; +} + +/* @internal */ +export function check_arr_len(arr: Uint8Array|null, len: number): Uint8Array|null { + if (arr !== null && arr.length != len) { throw new Error("Expected array of length " + len + " got " + arr.length); } + return arr; +} + +/* @internal */ +export function getArrayLength(arrayPointer: number): number { + const arraySizeViewer = new BigUint64Array(wasm.memory.buffer, arrayPointer, 1); + const len = arraySizeViewer[0]!; + if (len >= (2n ** 32n)) throw new Error("Bogus Array Size"); + return Number(len % (2n ** 32n)); +} +/* @internal */ +export function decodeUint128 (arrayPointer: number, free = true): bigint { + const arraySize = getArrayLength(arrayPointer); + if (arraySize != 16) throw "Need 16 bytes for a uint128"; + const actualArrayViewer = new Uint8Array(wasm.memory.buffer, arrayPointer + 8, arraySize); + var val = 0n; + for (var i = 0; i < 16; i++) { + val <<= 8n; + val |= BigInt(actualArrayViewer[i]!); + } + if (free) { + wasm.TS_free(arrayPointer); + } + return val; +} +/* @internal */ +export function decodeUint8Array (arrayPointer: number, free = true): Uint8Array { + const arraySize = getArrayLength(arrayPointer); + const actualArrayViewer = new Uint8Array(wasm.memory.buffer, arrayPointer + 8, arraySize); + // Clone the contents, TODO: In the future we should wrap the Viewer in a class that + // will free the underlying memory when it becomes unreachable instead of copying here. + // Note that doing so may have edge-case interactions with memory resizing (invalidating the buffer). + const actualArray = actualArrayViewer.slice(0, arraySize); + if (free) { + wasm.TS_free(arrayPointer); + } + return actualArray; +} +const decodeUint32Array = (arrayPointer: number, free = true) => { + const arraySize = getArrayLength(arrayPointer); + const actualArrayViewer = new Uint32Array( + wasm.memory.buffer, // value + arrayPointer + 8, // offset (ignoring length bytes) + arraySize // uint32 count + ); + // Clone the contents, TODO: In the future we should wrap the Viewer in a class that + // will free the underlying memory when it becomes unreachable instead of copying here. + const actualArray = actualArrayViewer.slice(0, arraySize); + if (free) { + wasm.TS_free(arrayPointer); + } + return actualArray; +} +/* @internal */ +export function decodeUint64Array (arrayPointer: number, free = true): bigint[] { + const arraySize = getArrayLength(arrayPointer); + const actualArrayViewer = new BigUint64Array( + wasm.memory.buffer, // value + arrayPointer + 8, // offset (ignoring length bytes) + arraySize // uint32 count + ); + // Clone the contents, TODO: In the future we should wrap the Viewer in a class that + // will free the underlying memory when it becomes unreachable instead of copying here. + const actualArray = new Array(arraySize); + for (var i = 0; i < arraySize; i++) actualArray[i] = actualArrayViewer[i]; + if (free) { + wasm.TS_free(arrayPointer); + } + return actualArray; +} + +export function freeWasmMemory(pointer: number) { wasm.TS_free(pointer); } + +/* @internal */ +export function getU64ArrayElem(arrayPointer: number, idx: number): bigint { + const actualArrayViewer = new BigUint64Array(wasm.memory.buffer, arrayPointer + 8, idx + 1); + return actualArrayViewer[idx]!; +} + +/* @internal */ +export function getU32ArrayElem(arrayPointer: number, idx: number): number { + const actualArrayViewer = new Uint32Array(wasm.memory.buffer, arrayPointer + 8, idx + 1); + return actualArrayViewer[idx]!; +} + +/* @internal */ +export function getU8ArrayElem(arrayPointer: number, idx: number): number { + const actualArrayViewer = new Uint8Array(wasm.memory.buffer, arrayPointer + 8, idx + 1); + return actualArrayViewer[idx]!; +} + + +/* @internal */ +export function encodeString(str: string): number { + const charArray = new TextEncoder().encode(str); + return encodeUint8Array(charArray); +} + +/* @internal */ +export function decodeString(stringPointer: number, free = true): string { + const arraySize = getArrayLength(stringPointer); + const memoryView = new Uint8Array(wasm.memory.buffer, stringPointer + 8, arraySize); + const result = new TextDecoder("utf-8").decode(memoryView); + + if (free) { + wasm.TS_free(stringPointer); + } + + return result; +} +""" + if DEBUG: + self.bindings_header += """ +/* @internal */ +export function getRemainingAllocationCount(): number { + return wasm.TS_allocs_remaining(); +} +/* @internal */ +export function debugPrintRemainingAllocs() { + wasm.TS_print_leaks(); +} +""" + else: + self.bindings_header += "\n/* @internal */ export function getRemainingAllocationCount(): number { return 0; }\n" + self.bindings_header += "/* @internal */ export function debugPrintRemainingAllocs() { }\n" + + with open(outdir + "/index.py", 'a') as index: + index.write("""import { initializeWasmFetch, initializeWasmFromUint8Array } from './bindings.mjs'; +/** Initializes the WASM backend by calling `fetch()` on the given URI - Browser only */ +export async function initializeWasmWebFetch(uri: string) { + await initializeWasmFetch(uri); +} +/** Initializes the WASM backend given a Uint8Array of the .wasm binary file - Browser or Node.JS */ +export async function initializeWasmFromBinary(bin: Uint8Array) { + await initializeWasmFromUint8Array(bin); +} + +""") + + self.bindings_version_file = """export function get_ldk_java_bindings_version(): String { + return ""; +}""" + + self.common_base = """ +function freer(f: () => void) { f() } +const finalizer = new FinalizationRegistry(freer); +function get_freeer(ptr: bigint, free_fn: (ptr: bigint) => void) { + return () => { + free_fn(ptr); + } +} + +export class UInt5 { + public constructor(private val: number) { + if (val > 32 || val < 0) throw new Error("UInt5 value is out of range"); + } + public getVal(): number { + return this.val; + } +} + +export class WitnessVersion { + public constructor(private val: number) { + if (val > 16 || val < 0) throw new Error("WitnessVersion value is out of range"); + } + public getVal(): number { + return this.val; + } +} + +export class UnqualifiedError { + public constructor(_val: number) {} +} +""" + + self.txout_defn = """export class TxOut extends CommonBase { + /** The script_pubkey in this output */ + public script_pubkey: Uint8Array; + /** The value, in satoshis, of this output */ + public value: bigint; + + /* @internal */ + public constructor(_dummy: null, ptr: bigint) { + super(ptr, bindings.TxOut_free); + this.script_pubkey = bindings.decodeUint8Array(bindings.TxOut_get_script_pubkey(ptr)); + this.value = bindings.TxOut_get_value(ptr); + } + public static constructor_new(value: bigint, script_pubkey: Uint8Array): TxOut { + return new TxOut(null, bindings.TxOut_new(bindings.encodeUint8Array(script_pubkey), value)); + } +}""" + self.obj_defined(["TxOut"], "structs") + + self.scalar_defn = """export class BigEndianScalar extends CommonBase { + /** The bytes of the scalar value, in big endian */ + public scalar_bytes: Uint8Array; + + /* @internal */ + public constructor(_dummy: null, ptr: bigint) { + super(ptr, bindings.BigEndianScalar_free); + this.scalar_bytes = bindings.decodeUint8Array(bindings.BigEndianScalar_get_bytes(ptr)); + } + public static constructor_new(scalar_bytes: Uint8Array): BigEndianScalar { + return new BigEndianScalar(null, bindings.BigEndianScalar_new(bindings.encodeUint8Array(scalar_bytes))); + } +}""" + self.obj_defined(["BigEndianScalar"], "structs") + + self.c_file_pfx = """#include "js-wasm.h" +#include +#include + +// These should be provided...somehow... +void *memset(void *s, int c, size_t n); +void *memcpy(void *dest, const void *src, size_t n); +int memcmp(const void *s1, const void *s2, size_t n); + +extern void __attribute__((noreturn)) abort(void); +static inline void assert(bool expression) { + if (!expression) { abort(); } +} + +uint32_t __attribute__((export_name("test_bigint_pass_deadbeef0badf00d"))) test_bigint_pass_deadbeef0badf00d(uint64_t val) { + return val == 0xdeadbeef0badf00dULL; +} + +""" + + if not DEBUG: + self.c_file_pfx += """ +void *malloc(size_t size); +void free(void *ptr); + +#define MALLOC(a, _) malloc(a) +#define do_MALLOC(a, _b, _c) malloc(a) +#define FREE(p) if ((unsigned long)(p) > 4096) { free(p); } +#define DO_ASSERT(a) (void)(a) +#define CHECK(a) +#define CHECK_ACCESS(p) +#define CHECK_INNER_FIELD_ACCESS_OR_NULL(v) +""" + else: + self.c_file_pfx += """ +extern int snprintf(char *str, size_t size, const char *format, ...); +typedef int32_t ssize_t; +ssize_t write(int fd, const void *buf, size_t count); +#define DEBUG_PRINT(...) do { \\ + char debug_str[1024]; \\ + int s_len = snprintf(debug_str, 1023, __VA_ARGS__); \\ + write(2, debug_str, s_len); \\ +} while (0); + +// Always run a, then assert it is true: +#define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0) +// Assert a is true or do nothing +#define CHECK(a) DO_ASSERT(a) + +// Running a leak check across all the allocations and frees of the JDK is a mess, +// so instead we implement our own naive leak checker here, relying on the -wrap +// linker option to wrap malloc/calloc/realloc/free, tracking everyhing allocated +// and free'd in Rust or C across the generated bindings shared library. + +#define BT_MAX 128 +typedef struct allocation { + struct allocation* next; + void* ptr; + const char* struct_name; + int lineno; +} allocation; +static allocation* allocation_ll = NULL; +static allocation* freed_ll = NULL; + +extern void* __real_malloc(size_t len); +extern void* __real_calloc(size_t nmemb, size_t len); +extern void* __real_aligned_alloc(size_t alignment, size_t size); +static void new_allocation(void* res, const char* struct_name, int lineno) { + allocation* new_alloc = __real_malloc(sizeof(allocation)); + new_alloc->ptr = res; + new_alloc->struct_name = struct_name; + new_alloc->next = allocation_ll; + new_alloc->lineno = lineno; + allocation_ll = new_alloc; +} +static void* do_MALLOC(size_t len, const char* struct_name, int lineno) { + void* res = __real_malloc(len); + new_allocation(res, struct_name, lineno); + return res; +} +#define MALLOC(len, struct_name) do_MALLOC(len, struct_name, __LINE__) + +void __real_free(void* ptr); +static void alloc_freed(void* ptr, int lineno) { + allocation* p = NULL; + allocation* it = allocation_ll; + while (it->ptr != ptr) { + p = it; it = it->next; + if (it == NULL) { + p = NULL; + it = freed_ll; + while (it && it->ptr != ptr) { p = it; it = it->next; } + if (it == NULL) { + DEBUG_PRINT("Tried to free unknown pointer %p at line %d.\\n", ptr, lineno); + } else { + DEBUG_PRINT("Tried to free unknown pointer %p at line %d.\\n Possibly double-free from %s, allocated on line %d.", ptr, lineno, it->struct_name, it->lineno); + } + abort(); + } + } + if (p) { p->next = it->next; } else { allocation_ll = it->next; } + DO_ASSERT(it->ptr == ptr); + it->next = freed_ll; + freed_ll = it; +} +static void do_FREE(void* ptr, int lineno) { + if ((unsigned long)ptr <= 4096) return; // Rust loves to create pointers to the NULL page for dummys + alloc_freed(ptr, lineno); + __real_free(ptr); +} +#define FREE(ptr) do_FREE(ptr, __LINE__) + +static void CHECK_ACCESS(const void* ptr) { + allocation* it = allocation_ll; + while (it->ptr != ptr) { + it = it->next; + if (it == NULL) { + return; // addrsan should catch malloc-unknown and print more info than we have + } + } +} +#define CHECK_INNER_FIELD_ACCESS_OR_NULL(v) \\ + if (v.is_owned && v.inner != NULL) { \\ + const void *p = __unmangle_inner_ptr(v.inner); \\ + if (p != NULL) { \\ + CHECK_ACCESS(p); \\ + } \\ + } + +void* __wrap_malloc(size_t len) { + void* res = __real_malloc(len); + new_allocation(res, "malloc call", 0); + return res; +} +void* __wrap_calloc(size_t nmemb, size_t len) { + void* res = __real_calloc(nmemb, len); + new_allocation(res, "calloc call", 0); + return res; +} +void* __wrap_aligned_alloc(size_t alignment, size_t size) { + void* res = __real_aligned_alloc(alignment, size); + new_allocation(res, "aligned_alloc call", 0); + return res; +} +void __wrap_free(void* ptr) { + if (ptr == NULL) return; + alloc_freed(ptr, 0); + __real_free(ptr); +} + +void* __real_realloc(void* ptr, size_t newlen); +void* __wrap_realloc(void* ptr, size_t len) { + if (ptr != NULL) alloc_freed(ptr, 0); + void* res = __real_realloc(ptr, len); + new_allocation(res, "realloc call", 0); + return res; +} +void __wrap_reallocarray(void* ptr, size_t new_sz) { + // Rust doesn't seem to use reallocarray currently + DO_ASSERT(false); +} + +uint32_t __attribute__((export_name("TS_allocs_remaining"))) allocs_remaining() { + uint32_t count = 0; + for (allocation* a = allocation_ll; a != NULL; a = a->next) { + count++; + } + return count; +} +void __attribute__((export_name("TS_print_leaks"))) print_leaks() { + for (allocation* a = allocation_ll; a != NULL; a = a->next) { + DEBUG_PRINT("%s %p remains. Allocated on line %d\\n", a->struct_name, a->ptr, a->lineno); + } +} +""" + self.c_file_pfx = self.c_file_pfx + """ +// We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed) +_Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKu8slice), "Vec and [u8] need to have been mapped identically"); +_Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec and [u8] need to have been mapped identically"); +_Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec and [u8] need to have been mapped identically"); + +_Static_assert(sizeof(void*) == 4, "Pointers mut be 32 bits"); + +#define DECL_ARR_TYPE(ty, name) \\ + struct name##array { \\ + uint64_t arr_len; /* uint32_t would suffice but we want to align uint64_ts as well */ \\ + ty elems[]; \\ + }; \\ + typedef struct name##array * name##Array; \\ + static inline name##Array init_##name##Array(size_t arr_len, int lineno) { \\ + name##Array arr = (name##Array)do_MALLOC(arr_len * sizeof(ty) + sizeof(uint64_t), #name" array init", lineno); \\ + arr->arr_len = arr_len; \\ + return arr; \\ + } + +DECL_ARR_TYPE(int64_t, int64_t); +DECL_ARR_TYPE(uint64_t, uint64_t); +DECL_ARR_TYPE(int8_t, int8_t); +DECL_ARR_TYPE(uint32_t, uint32_t); +DECL_ARR_TYPE(void*, ptr); +DECL_ARR_TYPE(char, char); +typedef charArray jstring; + +static inline jstring str_ref_to_ts(const char* chars, size_t len) { + charArray arr = init_charArray(len, __LINE__); + memcpy(arr->elems, chars, len); + return arr; +} +static inline LDKStr str_ref_to_owned_c(const jstring str) { + char* newchars = MALLOC(str->arr_len + 1, "String chars"); + memcpy(newchars, str->elems, str->arr_len); + newchars[str->arr_len] = 0; + LDKStr res = { + .chars = newchars, + .len = str->arr_len, + .chars_is_owned = true + }; + return res; +} + +typedef bool jboolean; + +uint32_t __attribute__((export_name("TS_malloc"))) TS_malloc(uint32_t size) { + return (uint32_t)MALLOC(size, "JS-Called malloc"); +} +void __attribute__((export_name("TS_free"))) TS_free(uint32_t ptr) { + FREE((void*)ptr); +} + +jstring __attribute__((export_name("TS_get_ldk_c_bindings_version"))) TS_get_ldk_c_bindings_version() { + const char *res = check_get_ldk_bindings_version(); + if (res == NULL) return NULL; + return str_ref_to_ts(res, strlen(res)); +} +jstring __attribute__((export_name("TS_get_ldk_version"))) get_ldk_version() { + const char *res = check_get_ldk_version(); + if (res == NULL) return NULL; + return str_ref_to_ts(res, strlen(res)); +} +#include "version.c" +""" + + self.c_version_file = """jstring __attribute__((export_name("TS_get_lib_version_string"))) TS_get_lib_version_string() { + return str_ref_to_ts("", strlen("")); +}""" + + self.hu_struct_file_prefix = """ +import { CommonBase, UInt5, WitnessVersion, UnqualifiedError } from './CommonBase.mjs'; +import * as bindings from '../bindings.mjs' + +""" + self.hu_struct_file_suffix = "" + self.util_fn_pfx = self.hu_struct_file_prefix + "\nexport class UtilMethods extends CommonBase {\n" + self.util_fn_sfx = "}" + self.c_fn_ty_pfx = "" + self.file_ext = ".py" + self.ptr_c_ty = "uint64_t" + self.ptr_native_ty = "bigint" + self.u128_native_ty = "bigint" + self.usize_c_ty = "uint32_t" + self.usize_native_ty = "number" + self.native_zero_ptr = "0n" + self.result_c_ty = "uint32_t" + self.ptr_arr = "ptrArray" + self.is_arr_some_check = ("", " != 0") + self.get_native_arr_len_call = ("", "->arr_len") + + def bindings_footer(self): + return "" + + def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var): + return None + def create_native_arr_call(self, arr_len, ty_info): + if ty_info.c_ty == "ptrArray": + assert ty_info.rust_obj == "LDKCVec_U5Z" or (ty_info.subty is not None and ty_info.subty.c_ty.endswith("Array")) + return "init_" + ty_info.c_ty + "(" + arr_len + ", __LINE__)" + def set_native_arr_contents(self, arr_name, arr_len, ty_info): + if ty_info.c_ty == "int8_tArray": + return ("memcpy(" + arr_name + "->elems, ", ", " + arr_len + ")") + else: + assert False + def get_native_arr_contents(self, arr_name, dest_name, arr_len, ty_info, copy): + if ty_info.c_ty == "int8_tArray": + if copy: + return "memcpy(" + dest_name + ", " + arr_name + "->elems, " + arr_len + "); FREE(" + arr_name + ")" + assert not copy + if ty_info.c_ty == "ptrArray": + return "(void*) " + arr_name + "->elems" + else: + return arr_name + "->elems" + def get_native_arr_elem(self, arr_name, idxc, ty_info): + assert False # Only called if above is None + def get_native_arr_ptr_call(self, ty_info): + if ty_info.subty is not None: + return "(" + ty_info.subty.c_ty + "*)(((uint8_t*)", ") + 8)" + return "(" + ty_info.c_ty + "*)(((uint8_t*)", ") + 8)" + def get_native_arr_entry_call(self, ty_info, arr_name, idxc, entry_access): + return None + def cleanup_native_arr_ref_contents(self, arr_name, dest_name, arr_len, ty_info): + if ty_info.c_ty == "int8_tArray": + return "FREE(" + arr_name + ");" + else: + return "FREE(" + arr_name + ")" + + def map_hu_array_elems(self, arr_name, conv_name, arr_ty, elem_ty): + if elem_ty.rust_obj == "LDKU5": + return arr_name + " != null ? bindings.uint5ArrToBytes(" + arr_name + ") : null" + assert elem_ty.c_ty == "uint64_t" or elem_ty.c_ty.endswith("Array") + return arr_name + " != null ? " + arr_name + ".map(" + conv_name + " => " + elem_ty.from_hu_conv[0] + ") : null" + + def str_ref_to_native_call(self, var_name, str_len): + return "str_ref_to_ts(" + var_name + ", " + str_len + ")" + def str_ref_to_c_call(self, var_name): + return "str_ref_to_owned_c(" + var_name + ")" + def str_to_hu_conv(self, var_name): + return "const " + var_name + "_conv: string = bindings.decodeString(" + var_name + ");" + def str_from_hu_conv(self, var_name): + return ("bindings.encodeString(" + var_name + ")", "") + + def c_fn_name_define_pfx(self, fn_name, have_args): + return " __attribute__((export_name(\"TS_" + fn_name + "\"))) TS_" + fn_name + "(" + + def init_str(self): + return "" + + def get_java_arr_len(self, arr_name): + return "bindings.getArrayLength(" + arr_name + ")" + def get_java_arr_elem(self, elem_ty, arr_name, idx): + if elem_ty.c_ty.endswith("Array") or elem_ty.c_ty == "uintptr_t": + return "bindings.getU32ArrayElem(" + arr_name + ", " + idx + ")" + elif elem_ty.c_ty == "uint64_t": + return "bindings.getU64ArrayElem(" + arr_name + ", " + idx + ")" + elif elem_ty.rust_obj == "LDKU5": + return "bindings.getU8ArrayElem(" + arr_name + ", " + idx + ")" + else: + assert False + def constr_hu_array(self, ty_info, arr_len): + return "new Array(" + arr_len + ").fill(null)" + def cleanup_converted_native_array(self, ty_info, arr_name): + return "bindings.freeWasmMemory(" + arr_name + ")" + + def primitive_arr_from_hu(self, arr_ty, fixed_len, arr_name): + mapped_ty = arr_ty.subty + inner = arr_name + if arr_ty.rust_obj == "LDKU128": + return ("bindings.encodeUint128(" + inner + ")", "") + if fixed_len is not None: + assert mapped_ty.c_ty == "int8_t" + inner = "bindings.check_arr_len(" + arr_name + ", " + fixed_len + ")" + if mapped_ty.c_ty.endswith("Array"): + return ("bindings.encodeUint32Array(" + inner + ")", "") + elif mapped_ty.c_ty == "uint8_t" or mapped_ty.c_ty == "int8_t": + return ("bindings.encodeUint8Array(" + inner + ")", "") + elif mapped_ty.c_ty == "uint32_t": + return ("bindings.encodeUint32Array(" + inner + ")", "") + elif mapped_ty.c_ty == "int64_t" or mapped_ty.c_ty == "uint64_t": + return ("bindings.encodeUint64Array(" + inner + ")", "") + else: + print(mapped_ty.c_ty) + assert False + + def primitive_arr_to_hu(self, arr_ty, fixed_len, arr_name, conv_name): + mapped_ty = arr_ty.subty + if arr_ty.rust_obj == "LDKU128": + return "const " + conv_name + ": bigint = bindings.decodeUint128(" + arr_name + ");" + elif mapped_ty.c_ty == "uint8_t" or mapped_ty.c_ty == "int8_t": + return "const " + conv_name + ": Uint8Array = bindings.decodeUint8Array(" + arr_name + ");" + elif mapped_ty.c_ty == "uint64_t" or mapped_ty.c_ty == "int64_t": + return "const " + conv_name + ": bigint[] = bindings.decodeUint64Array(" + arr_name + ");" + else: + assert False + + def var_decl_statement(self, ty_string, var_name, statement): + return "const " + var_name + ": " + ty_string + " = " + statement + + def java_arr_ty_str(self, elem_ty_str): + return "number" + + def for_n_in_range(self, n, minimum, maximum): + return "for (var " + n + " = " + minimum + "; " + n + " < " + maximum + "; " + n + "++) {" + def for_n_in_arr(self, n, arr_name, arr_elem_ty): + return (arr_name + ".forEach((" + n + ": " + arr_elem_ty.java_hu_ty + ") => { ", " })") + + def get_ptr(self, var): + return "CommonBase.get_ptr_of(" + var + ")" + def set_null_skip_free(self, var): + return "CommonBase.set_null_skip_free(" + var + ");" + + def add_ref(self, holder, referent): + return "CommonBase.add_ref_from(" + holder + ", " + referent + ")" + + def obj_defined(self, struct_names, folder): + with open(self.outdir + "/index.py", 'a') as index: + index.write(f"export * from './{folder}/{struct_names[0]}.mjs';\n") + with open(self.outdir + "/imports.py.part", 'a') as imports: + imports.write(f"import {{ {', '.join(struct_names)} }} from '../{folder}/{struct_names[0]}.mjs';\n") + + def fully_qualified_hu_ty_path(self, ty): + return ty.java_hu_ty + + def native_c_unitary_enum_map(self, struct_name, variants, enum_doc_comment): + out_c = "static inline LDK" + struct_name + " LDK" + struct_name + "_from_js(int32_t ord) {\n" + out_c = out_c + "\tswitch (ord) {\n" + ord_v = 0 + + out_typescript_enum_fields = "" + + for var, var_docs in variants: + out_c = out_c + "\t\tcase %d: return %s;\n" % (ord_v, var) + ord_v = ord_v + 1 + if var_docs is not None: + var_docs_repld = var_docs.replace("\n", "\n\t") + out_typescript_enum_fields += f"/**\n\t * {var_docs_repld}\n\t */\n" + out_typescript_enum_fields += f"\t{var},\n\t" + out_c = out_c + "\t}\n" + out_c = out_c + "\tabort();\n" + out_c = out_c + "}\n" + + out_c = out_c + "static inline int32_t LDK" + struct_name + "_to_js(LDK" + struct_name + " val) {\n" + out_c = out_c + "\tswitch (val) {\n" + ord_v = 0 + for var, _ in variants: + out_c = out_c + "\t\tcase " + var + ": return %d;\n" % ord_v + ord_v = ord_v + 1 + out_c = out_c + "\t\tdefault: abort();\n" + out_c = out_c + "\t}\n" + out_c = out_c + "}\n" + + # Note that this is *not* marked /* @internal */ as we re-expose it directly in enums/ + enum_comment_formatted = enum_doc_comment.replace("\n", "\n * ") + out_typescript = f""" +/** + * {enum_comment_formatted} + */ +export enum {struct_name} {{ + {out_typescript_enum_fields} +}} +""" + out_typescript_enum = f"export {{ {struct_name} }} from \"../bindings.mjs\";" + self.obj_defined([struct_name], "enums") + return (out_c, out_typescript_enum, out_typescript) + + def c_unitary_enum_to_native_call(self, ty_info): + return (ty_info.rust_obj + "_to_js(", ")") + def native_unitary_enum_to_c_call(self, ty_info): + return (ty_info.rust_obj + "_from_js(", ")") + + def native_c_map_trait(self, struct_name, field_var_conversions, flattened_field_var_conversions, field_function_lines, trait_doc_comment): + out_typescript_bindings = "" + super_instantiator = "" + bindings_instantiator = "" + pointer_to_adder = "" + impl_constructor_arguments = "" + for var in flattened_field_var_conversions: + if isinstance(var, ConvInfo): + impl_constructor_arguments += f", {var.arg_name}: {var.java_hu_ty}" + super_instantiator += first_to_lower(var.arg_name) + ", " + if var.from_hu_conv is not None: + bindings_instantiator += ", " + var.from_hu_conv[0] + if var.from_hu_conv[1] != "": + pointer_to_adder += "\t\t\t" + var.from_hu_conv[1] + ";\n" + else: + bindings_instantiator += ", " + first_to_lower(var.arg_name) + else: + bindings_instantiator += ", " + first_to_lower(var[1]) + ".instance_idx!" + super_instantiator += first_to_lower(var[1]) + "_impl, " + pointer_to_adder += "\t\timpl_holder.held.ptrs_to.push(" + first_to_lower(var[1]) + ");\n" + impl_constructor_arguments += f", {first_to_lower(var[1])}_impl: {var[0].replace('LDK', '')}Interface" + + super_constructor_statements = "" + trait_constructor_arguments = "" + for var in field_var_conversions: + if isinstance(var, ConvInfo): + trait_constructor_arguments += ", " + var.arg_name + else: + super_constructor_statements += "\t\tconst " + first_to_lower(var[1]) + " = " + var[1] + ".new_impl(" + super_instantiator + ");\n" + trait_constructor_arguments += ", " + first_to_lower(var[1]) + ".instance_idx!" + for suparg in var[2]: + if isinstance(suparg, ConvInfo): + trait_constructor_arguments += ", " + suparg.arg_name + else: + trait_constructor_arguments += ", " + suparg[1] + + # BUILD INTERFACE METHODS + out_java_interface = "" + out_interface_implementation_overrides = "" + java_methods = [] + for fn_line in field_function_lines: + java_method_descriptor = "" + if fn_line.fn_name != "free" and fn_line.fn_name != "cloned": + out_java_interface += "\t/**" + fn_line.docs.replace("\n", "\n\t * ") + "\n\t */\n" + out_java_interface += "\t" + fn_line.fn_name + "(" + out_interface_implementation_overrides += f"\t\t\t{fn_line.fn_name} (" + + for idx, arg_conv_info in enumerate(fn_line.args_ty): + if idx >= 1: + out_java_interface += ", " + out_interface_implementation_overrides += ", " + out_java_interface += f"{arg_conv_info.arg_name}: {arg_conv_info.java_hu_ty}" + out_interface_implementation_overrides += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}" + java_method_descriptor += arg_conv_info.java_fn_ty_arg + out_java_interface += f"): {fn_line.ret_ty_info.java_hu_ty};\n" + java_method_descriptor += ")" + fn_line.ret_ty_info.java_fn_ty_arg + java_methods.append((fn_line.fn_name, java_method_descriptor)) + + out_interface_implementation_overrides += f"): {fn_line.ret_ty_info.java_ty} {{\n" + + for arg_info in fn_line.args_ty: + if arg_info.to_hu_conv is not None: + out_interface_implementation_overrides += "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n" + + if fn_line.ret_ty_info.java_ty != "void": + out_interface_implementation_overrides += "\t\t\t\tconst ret: " + fn_line.ret_ty_info.java_hu_ty + " = arg." + fn_line.fn_name + "(" + else: + out_interface_implementation_overrides += f"\t\t\t\targ." + fn_line.fn_name + "(" + + for idx, arg_info in enumerate(fn_line.args_ty): + if idx != 0: + out_interface_implementation_overrides += ", " + if arg_info.to_hu_conv_name is not None: + out_interface_implementation_overrides += arg_info.to_hu_conv_name + else: + out_interface_implementation_overrides += arg_info.arg_name + + out_interface_implementation_overrides += ");\n" + if fn_line.ret_ty_info.java_ty != "void": + if fn_line.ret_ty_info.from_hu_conv is not None: + 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" + if fn_line.ret_ty_info.from_hu_conv[1] != "": + 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" + #if fn_line.ret_ty_info.rust_obj in result_types: + # XXX: We need to handle this in conversion logic so that its cross-language! + # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead + # out_interface_implementation_overrides = out_interface_implementation_overrides + "\t\t\t\tret.ptr = 0;\n" + out_interface_implementation_overrides += "\t\t\t\treturn result;\n" + else: + out_interface_implementation_overrides += "\t\t\t\treturn ret;\n" + out_interface_implementation_overrides += f"\t\t\t}},\n" + + formatted_trait_docs = trait_doc_comment.replace("\n", "\n * ") + out_typescript_human = f""" +{self.hu_struct_file_prefix} + +/** An implementation of {struct_name.replace("LDK","")} */ +export interface {struct_name.replace("LDK", "")}Interface {{ +{out_java_interface}}} + +class {struct_name}Holder {{ + held: {struct_name.replace("LDK", "")}|null = null; +}} + +/** + * {formatted_trait_docs} + */ +export class {struct_name.replace("LDK","")} extends CommonBase {{ + /* @internal */ + public bindings_instance: bindings.{struct_name}|null; + + /* @internal */ + public instance_idx?: number; + + /* @internal */ + constructor(_dummy: null, ptr: bigint) {{ + super(ptr, bindings.{struct_name.replace("LDK","")}_free); + this.bindings_instance = null; + }} + + /** Creates a new instance of {struct_name.replace("LDK","")} from a given implementation */ + public static new_impl(arg: {struct_name.replace("LDK", "")}Interface{impl_constructor_arguments}): {struct_name.replace("LDK", "")} {{ + const impl_holder: {struct_name}Holder = new {struct_name}Holder(); + let structImplementation = {{ +{out_interface_implementation_overrides} }} as bindings.{struct_name}; +{super_constructor_statements} const ptr_idx: [bigint, number] = bindings.{struct_name}_new(structImplementation{bindings_instantiator}); + + impl_holder.held = new {struct_name.replace("LDK", "")}(null, ptr_idx[0]); + impl_holder.held.instance_idx = ptr_idx[1]; + impl_holder.held.bindings_instance = structImplementation; +{pointer_to_adder} return impl_holder.held!; + }} + +""" + self.obj_defined([struct_name.replace("LDK", ""), struct_name.replace("LDK", "") + "Interface"], "structs") + + out_typescript_bindings += "/* @internal */\nexport interface " + struct_name + " {\n" + java_meths = [] + for fn_line in field_function_lines: + if fn_line.fn_name != "free" and fn_line.fn_name != "cloned": + out_typescript_bindings += f"\t{fn_line.fn_name} (" + + for idx, arg_conv_info in enumerate(fn_line.args_ty): + if idx >= 1: + out_typescript_bindings = out_typescript_bindings + ", " + out_typescript_bindings += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}" + + out_typescript_bindings += f"): {fn_line.ret_ty_info.java_ty};\n" + + out_typescript_bindings += "}\n\n" + + c_call_extra_args = "" + out_typescript_bindings += f"/* @internal */\nexport function {struct_name}_new(impl: {struct_name}" + for var in flattened_field_var_conversions: + if isinstance(var, ConvInfo): + out_typescript_bindings += f", {var.arg_name}: {var.java_ty}" + c_call_extra_args += f", {var.arg_name}" + else: + out_typescript_bindings += f", {var[1]}: number" + c_call_extra_args += f", {var[1]}" + + + out_typescript_bindings += f"""): [bigint, number] {{ + if(!isWasmInitialized) {{ + throw new Error("initializeWasm() must be awaited first!"); + }} + var new_obj_idx = js_objs.length; + for (var i = 0; i < js_objs.length; i++) {{ + if (js_objs[i] == null || js_objs[i] == undefined) {{ new_obj_idx = i; break; }} + }} + js_objs[i] = new WeakRef(impl); + return [wasm.TS_{struct_name}_new(i{c_call_extra_args}), i]; +}} +""" + + # Now that we've written out our java code (and created java_meths), generate C + out_c = "typedef struct " + struct_name + "_JCalls {\n" + out_c += "\tatomic_size_t refcnt;\n" + out_c += "\tuint32_t instance_ptr;\n" + for var in flattened_field_var_conversions: + if isinstance(var, ConvInfo): + # We're a regular ol' field + pass + else: + # We're a supertrait + out_c = out_c + "\t" + var[0] + "_JCalls* " + var[1] + ";\n" + out_c = out_c + "} " + struct_name + "_JCalls;\n" + + for fn_line in field_function_lines: + if fn_line.fn_name == "free": + out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n" + out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n" + out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n" + out_c = out_c + "\t\tFREE(j_calls);\n" + out_c = out_c + "\t}\n}\n" + + for idx, fn_line in enumerate(field_function_lines): + if fn_line.fn_name != "free" and fn_line.fn_name != "cloned": + assert fn_line.ret_ty_info.ty_info.get_full_rust_ty()[1] == "" + out_c = out_c + fn_line.ret_ty_info.ty_info.get_full_rust_ty()[0] + " " + fn_line.fn_name + "_" + struct_name + "_jcall(" + if fn_line.self_is_const: + out_c = out_c + "const void* this_arg" + else: + out_c = out_c + "void* this_arg" + + for idx, arg in enumerate(fn_line.args_ty): + out_c = out_c + ", " + arg.ty_info.get_full_rust_ty()[0] + " " + arg.arg_name + arg.ty_info.get_full_rust_ty()[1] + + out_c = out_c + ") {\n" + out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n" + + for arg_info in fn_line.args_ty: + if arg_info.ret_conv is not None: + out_c = out_c + "\t" + arg_info.ret_conv[0].replace('\n', '\n\t') + out_c = out_c + arg_info.arg_name + out_c = out_c + arg_info.ret_conv[1].replace('\n', '\n\t') + "\n" + + fn_suffix = "" + assert len(fn_line.args_ty) < 7 + for arg_info in fn_line.args_ty: + if arg_info.c_ty == "uint64_t" or arg_info.c_ty == "int64_t": + fn_suffix += "b" + else: + fn_suffix += "u" + for i in range(0, 6 - len(fn_line.args_ty)): + fn_suffix += "u" + if fn_line.ret_ty_info.c_ty.endswith("Array"): + out_c += "\t" + fn_line.ret_ty_info.c_ty + " ret = (" + fn_line.ret_ty_info.c_ty + ")" + out_c += "js_invoke_function_" + fn_suffix + "(j_calls->instance_ptr, " + str(self.function_ptr_counter) + elif fn_line.ret_ty_info.java_ty == "void": + out_c = out_c + "\tjs_invoke_function_" + fn_suffix + "(j_calls->instance_ptr, " + str(self.function_ptr_counter) + elif fn_line.ret_ty_info.java_hu_ty == "string": + out_c += "\tjstring ret = (jstring)js_invoke_function_" + fn_suffix + "(j_calls->instance_ptr, " + str(self.function_ptr_counter) + elif fn_line.ret_ty_info.arg_conv is None: + out_c += "\treturn js_invoke_function_" + fn_suffix + "(j_calls->instance_ptr, " + str(self.function_ptr_counter) + else: + out_c += "\tuint64_t ret = js_invoke_function_" + fn_suffix + "(j_calls->instance_ptr, " + str(self.function_ptr_counter) + + self.function_ptrs[self.function_ptr_counter] = (struct_name, fn_line.fn_name) + self.function_ptr_counter += 1 + + for idx, arg_info in enumerate(fn_line.args_ty): + if arg_info.ret_conv is not None: + if arg_info.c_ty.endswith("Array"): + out_c += ", (uint32_t)" + arg_info.ret_conv_name + else: + out_c += ", " + arg_info.ret_conv_name + else: + assert False # TODO: Would we need some conversion here? + out_c += ", (uint32_t)" + arg_info.arg_name + for i in range(0, 6 - len(fn_line.args_ty)): + out_c += ", 0" + out_c = out_c + ");\n" + if fn_line.ret_ty_info.arg_conv is not None: + 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" + + out_c = out_c + "}\n" + + # Write out a clone function whether we need one or not, as we use them in moving to rust + out_c = out_c + "static void " + struct_name + "_JCalls_cloned(" + struct_name + "* new_obj) {\n" + out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) new_obj->this_arg;\n" + out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n" + for var in field_var_conversions: + if not isinstance(var, ConvInfo): + out_c = out_c + "\tatomic_fetch_add_explicit(&j_calls->" + var[1] + "->refcnt, 1, memory_order_release);\n" + out_c = out_c + "}\n" + + out_c = out_c + "static inline " + struct_name + " " + struct_name + "_init (JSValue o" + for var in flattened_field_var_conversions: + if isinstance(var, ConvInfo): + out_c = out_c + ", " + var.c_ty + " " + var.arg_name + else: + out_c = out_c + ", JSValue " + var[1] + out_c = out_c + ") {\n" + + out_c = out_c + "\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n" + out_c = out_c + "\tatomic_init(&calls->refcnt, 1);\n" + out_c = out_c + "\tcalls->instance_ptr = o;\n" + + for (fn_name, java_meth_descr) in java_meths: + if fn_name != "free" and fn_name != "cloned": + out_c = out_c + "\tcalls->" + fn_name + "_meth = (*env)->GetMethodID(env, c, \"" + fn_name + "\", \"" + java_meth_descr + "\");\n" + out_c = out_c + "\tCHECK(calls->" + fn_name + "_meth != NULL);\n" + + for var in flattened_field_var_conversions: + if isinstance(var, ConvInfo) and var.arg_conv is not None: + out_c = out_c + "\n\t" + var.arg_conv.replace("\n", "\n\t") +"\n" + out_c = out_c + "\n\t" + struct_name + " ret = {\n" + out_c = out_c + "\t\t.this_arg = (void*) calls,\n" + for fn_line in field_function_lines: + if fn_line.fn_name != "free" and fn_line.fn_name != "cloned": + out_c = out_c + "\t\t." + fn_line.fn_name + " = " + fn_line.fn_name + "_" + struct_name + "_jcall,\n" + elif fn_line.fn_name == "free": + out_c = out_c + "\t\t.free = " + struct_name + "_JCalls_free,\n" + else: + out_c = out_c + "\t\t.cloned = " + struct_name + "_JCalls_cloned,\n" + for var in field_var_conversions: + if isinstance(var, ConvInfo): + if var.arg_conv_name is not None: + out_c = out_c + "\t\t." + var.arg_name + " = " + var.arg_conv_name + ",\n" + out_c = out_c + "\t\t.set_" + var.arg_name + " = NULL,\n" + else: + out_c = out_c + "\t\t." + var.var_name + " = " + var.var_name + ",\n" + out_c = out_c + "\t\t.set_" + var.var_name + " = NULL,\n" + else: + out_c += "\t\t." + var[1] + " = " + var[0] + "_init(" + var[1] + for suparg in var[2]: + if isinstance(suparg, ConvInfo): + out_c += ", " + suparg.arg_name + else: + out_c += ", " + suparg[1] + out_c += "),\n" + out_c = out_c + "\t};\n" + for var in flattened_field_var_conversions: + if not isinstance(var, ConvInfo): + out_c = out_c + "\tcalls->" + var[1] + " = ret." + var[1] + ".this_arg;\n" + out_c = out_c + "\treturn ret;\n" + out_c = out_c + "}\n" + + out_c = out_c + self.c_fn_ty_pfx + "uint64_t " + self.c_fn_name_define_pfx(struct_name + "_new", True) + "JSValue o" + for var in flattened_field_var_conversions: + if isinstance(var, ConvInfo): + out_c = out_c + ", " + var.c_ty + " " + var.arg_name + else: + out_c = out_c + ", JSValue " + var[1] + out_c = out_c + ") {\n" + out_c = out_c + "\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n" + out_c = out_c + "\t*res_ptr = " + struct_name + "_init(o" + for var in flattened_field_var_conversions: + if isinstance(var, ConvInfo): + out_c = out_c + ", " + var.arg_name + else: + out_c = out_c + ", " + var[1] + out_c = out_c + ");\n" + out_c = out_c + "\treturn tag_ptr(res_ptr, true);\n" + out_c = out_c + "}\n" + + return (out_typescript_bindings, out_typescript_human, out_c) + + def trait_struct_inc_refcnt(self, ty_info): + base_conv = "\nif (" + ty_info.var_name + "_conv.free == " + ty_info.rust_obj + "_JCalls_free) {\n" + base_conv = base_conv + "\t// If this_arg is a JCalls struct, then we need to increment the refcnt in it.\n" + base_conv = base_conv + "\t" + ty_info.rust_obj + "_JCalls_cloned(&" + ty_info.var_name + "_conv);\n}" + return base_conv + + def map_complex_enum(self, struct_name, variant_list, camel_to_snake, enum_doc_comment): + bindings_type = struct_name.replace("LDK", "") + java_hu_type = struct_name.replace("LDK", "").replace("COption", "Option") + + out_java_enum = "" + out_java = "" + out_c = "" + + out_java_enum += (self.hu_struct_file_prefix) + + java_hu_class = "/**\n * " + enum_doc_comment.replace("\n", "\n * ") + "\n */\n" + java_hu_class += "export class " + java_hu_type + " extends CommonBase {\n" + java_hu_class += "\tprotected constructor(_dummy: null, ptr: bigint) { super(ptr, bindings." + bindings_type + "_free); }\n" + java_hu_class += "\t/* @internal */\n" + java_hu_class += f"\tpublic static constr_from_ptr(ptr: bigint): {java_hu_type} {{\n" + java_hu_class += f"\t\tconst raw_ty: number = bindings." + struct_name + "_ty_from_ptr(ptr);\n" + 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" + out_c += "\t" + struct_name + " *obj = (" + struct_name + "*)untag_ptr(ptr);\n" + out_c += "\tswitch(obj->tag) {\n" + java_hu_class += "\t\tswitch (raw_ty) {\n" + java_hu_subclasses = "" + + out_java += "/* @internal */\nexport class " + struct_name + " {\n" + out_java += "\tprotected constructor() {}\n" + var_idx = 0 + for var in variant_list: + java_hu_subclasses += "/** A " + java_hu_type + " of type " + var.var_name + " */\n" + java_hu_subclasses += "export class " + java_hu_type + "_" + var.var_name + " extends " + java_hu_type + " {\n" + java_hu_class += f"\t\t\tcase {var_idx}: " + java_hu_class += "return new " + java_hu_type + "_" + var.var_name + "(ptr);\n" + out_c += f"\t\tcase {struct_name}_{var.var_name}: return {var_idx};\n" + hu_conv_body = "" + for idx, (field_ty, field_docs) in enumerate(var.fields): + if field_docs is not None: + java_hu_subclasses += "\t/**\n\t * " + field_docs.replace("\n", "\n\t * ") + "\n\t */\n" + java_hu_subclasses += "\tpublic " + field_ty.arg_name + f": {field_ty.java_hu_ty};\n" + if field_ty.to_hu_conv is not None: + 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" + hu_conv_body += f"\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n" + hu_conv_body += f"\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n" + else: + hu_conv_body += f"\t\tthis.{field_ty.arg_name} = bindings.{struct_name}_{var.var_name}_get_{field_ty.arg_name}(ptr);\n" + java_hu_subclasses += "\t/* @internal */\n" + java_hu_subclasses += "\tpublic constructor(ptr: bigint) {\n\t\tsuper(null, ptr);\n" + java_hu_subclasses = java_hu_subclasses + hu_conv_body + java_hu_subclasses = java_hu_subclasses + "\t}\n}\n" + var_idx += 1 + out_java += "}\n" + 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" + out_java += self.fn_call_body(struct_name + "_ty_from_ptr", "uint32_t", "number", "ptr: bigint", "ptr") + out_c += ("\t\tdefault: abort();\n") + out_c += ("\t}\n}\n") + + for var in variant_list: + for idx, (field_map, _) in enumerate(var.fields): + fn_name = f"{struct_name}_{var.var_name}_get_{field_map.arg_name}" + 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" + out_c += "\t" + struct_name + " *obj = (" + struct_name + "*)untag_ptr(ptr);\n" + out_c += f"\tassert(obj->tag == {struct_name}_{var.var_name});\n" + if field_map.ret_conv is not None: + out_c += ("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t")) + if var.tuple_variant: + out_c += "obj->" + camel_to_snake(var.var_name) + else: + out_c += "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name + out_c += (field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n") + out_c += "\treturn " + field_map.ret_conv_name + ";\n" + else: + if var.tuple_variant: + out_c += "\treturn " + "obj->" + camel_to_snake(var.var_name) + ";\n" + else: + out_c += "\treturn " + "obj->" + camel_to_snake(var.var_name) + "." + field_map.arg_name + ";\n" + out_c += "}\n" + out_java += self.fn_call_body(fn_name, field_map.c_ty, field_map.java_ty, "ptr: bigint", "ptr") + out_java_enum += java_hu_class + self.struct_file_suffixes[java_hu_type] = java_hu_subclasses + self.obj_defined([java_hu_type], "structs") + return (out_java, out_java_enum, out_c) + + def map_opaque_struct(self, struct_name, struct_doc_comment): + method_header = "" + + hu_name = struct_name.replace("LDKC2Tuple", "TwoTuple").replace("LDKC3Tuple", "ThreeTuple").replace("LDK", "") + out_opaque_struct_human = f"{self.hu_struct_file_prefix}" + extra_docs = "" + extra_body = "" + if struct_name.startswith("LDKLocked") or struct_name.startswith("LDKReadOnly"): + extra_docs = "\n\tThis type represents a lock and MUST BE MANUALLY FREE'd!" # XXX: There's a thing for this + constructor_body = 'super(ptr, () => { throw new Error("Locks must be manually freed with free()"); });' + extra_body = f""" + /** Releases this lock */ + public free() {{ + bindings.{struct_name.replace("LDK","")}_free(this.ptr); + CommonBase.set_null_skip_free(this); + }}""" + formatted_doc_comment = struct_doc_comment.replace("\n", "\n\t") + out_opaque_struct_human += f""" +class {hu_name} {{ + \"\"\"{extra_docs} + {formatted_doc_comment} + \"\"\" + def __init__(_dummy: null, ptr: int): + self.ptr = ptr + + def __del__(self): + bindings.{struct_name.replace("LDK","")}_free(self.ptr) +{extra_body} + +""" + self.obj_defined([hu_name], "structs") + return out_opaque_struct_human + + def map_tuple(self, struct_name): + return self.map_opaque_struct(struct_name, "A Tuple") + + def map_result(self, struct_name, res_map, err_map): + human_ty = struct_name.replace("LDKCResult", "Result") + + suffixes = f"export class {human_ty}_OK extends {human_ty} {{\n" + if res_map.java_hu_ty != "void": + suffixes += "\tpublic res: " + res_map.java_hu_ty + ";\n" + suffixes += f""" + /* @internal */ + public constructor(_dummy: null, ptr: bigint) {{ + super(_dummy, ptr); +""" + if res_map.java_hu_ty == "void": + pass + elif res_map.to_hu_conv is not None: + suffixes += "\t\tconst res: " + res_map.java_ty + " = bindings." + struct_name.replace("LDK", "") + "_get_ok(ptr);\n" + suffixes += "\t\t" + res_map.to_hu_conv.replace("\n", "\n\t\t") + suffixes += "\n\t\tthis.res = " + res_map.to_hu_conv_name + ";\n" + else: + suffixes += "\t\tthis.res = bindings." + struct_name.replace("LDK", "") + "_get_ok(ptr);\n" + suffixes += "\t}\n}\n" + + suffixes += f"export class {human_ty}_Err extends {human_ty} {{\n" + if err_map.java_hu_ty != "void": + suffixes += "\tpublic err: " + err_map.java_hu_ty + ";\n" + suffixes += f""" + /* @internal */ + public constructor(_dummy: null, ptr: bigint) {{ + super(_dummy, ptr); +""" + if err_map.java_hu_ty == "void": + pass + elif err_map.to_hu_conv is not None: + suffixes += "\t\tconst err: " + err_map.java_ty + " = bindings." + struct_name.replace("LDK", "") + "_get_err(ptr);\n" + suffixes += "\t\t" + err_map.to_hu_conv.replace("\n", "\n\t\t") + suffixes += "\n\t\tthis.err = " + err_map.to_hu_conv_name + ";\n" + else: + suffixes += "\t\tthis.err = bindings." + struct_name.replace("LDK", "") + "_get_err(ptr);\n" + suffixes += "\t}\n}" + + self.struct_file_suffixes[human_ty] = suffixes + self.obj_defined([human_ty], "structs") + + return f"""{self.hu_struct_file_prefix} + +export class {human_ty} extends CommonBase {{ + protected constructor(_dummy: null, ptr: bigint) {{ + super(ptr, bindings.{struct_name.replace("LDK","")}_free); + }} + /* @internal */ + public static constr_from_ptr(ptr: bigint): {human_ty} {{ + if (bindings.{struct_name.replace("LDK", "")}_is_ok(ptr)) {{ + return new {human_ty}_OK(null, ptr); + }} else {{ + return new {human_ty}_Err(null, ptr); + }} + }} +""" + + def fn_call_body(self, method_name, return_c_ty, return_java_ty, method_argument_string, native_call_argument_string): + has_return_value = return_c_ty != 'void' + return_statement = 'return nativeResponseValue;' + if not has_return_value: + return_statement = '// debug statements here' + + return f"""/* @internal */ +export function {method_name}({method_argument_string}): {return_java_ty} {{ + if(!isWasmInitialized) {{ + throw new Error("initializeWasm() must be awaited first!"); + }} + const nativeResponseValue = wasm.TS_{method_name}({native_call_argument_string}); + {return_statement} +}} +""" + 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): + out_java = "" + out_c = "" + out_java_struct = None + + out_java += ("\t") + out_c += (self.c_fn_ty_pfx) + out_c += (return_type_info.c_ty) + out_java += (return_type_info.java_ty) + if return_type_info.ret_conv is not None: + ret_conv_pfx, ret_conv_sfx = return_type_info.ret_conv + out_java += (" " + method_name + "(") + out_c += (" " + self.c_fn_name_define_pfx(method_name, True)) + + method_argument_string = "" + native_call_argument_string = "" + for idx, arg_conv_info in enumerate(argument_types): + if idx != 0: + method_argument_string += (", ") + native_call_argument_string += ', ' + out_c += (", ") + if arg_conv_info.c_ty != "void": + out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name) + method_argument_string += f"{arg_conv_info.arg_name}: {arg_conv_info.java_ty}" + native_call_argument_string += arg_conv_info.arg_name + 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) + + out_java_struct = "" + if doc_comment is not None: + out_java_struct = "\t/**\n\t * " + doc_comment.replace("\n", "\n\t * ") + "\n\t */\n" + + if not args_known: + out_java_struct += ("\t// Skipped " + method_name + "\n") + else: + if not takes_self: + out_java_struct += ( + "\tpublic static constructor_" + meth_n + "(") + else: + out_java_struct += ("\tpublic " + meth_n + "(") + for idx, arg in enumerate(argument_types): + if idx != 0: + if not takes_self or idx > 1: + out_java_struct += (", ") + elif takes_self: + continue + if arg.java_ty != "void": + if arg.arg_name in default_constructor_args: + for explode_idx, explode_arg in enumerate(default_constructor_args[arg.arg_name]): + if explode_idx != 0: + out_java_struct += (", ") + out_java_struct += arg.arg_name + "_" + explode_arg.arg_name + ": " + explode_arg.java_hu_ty + else: + out_java_struct += arg.arg_name + ": " + arg.java_hu_ty + if arg.nullable: + out_java_struct += "|null" + + out_c += (") {\n") + if out_java_struct is not None: + out_java_struct += "): " + return_type_info.java_hu_ty + " {\n" + for info in argument_types: + if info.arg_conv is not None: + out_c += ("\t" + info.arg_conv.replace('\n', "\n\t") + "\n") + if return_type_info.ret_conv is not None: + out_c += ("\t" + ret_conv_pfx.replace('\n', '\n\t')) + elif return_type_info.c_ty != "void": + out_c += ("\t" + return_type_info.c_ty + " ret_val = ") + else: + out_c += ("\t") + if c_call_string is None: + out_c += (method_name + "(") + else: + out_c += (c_call_string) + for idx, info in enumerate(argument_types): + if info.arg_conv_name is not None: + if idx != 0: + out_c += (", ") + elif c_call_string is not None: + continue + out_c += (info.arg_conv_name) + out_c += (")") + if return_type_info.ret_conv is not None: + out_c += (ret_conv_sfx.replace('\n', '\n\t')) + else: + out_c += (";") + for info in argument_types: + if info.arg_conv_cleanup is not None: + out_c += ("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t")) + if return_type_info.ret_conv is not None: + out_c += ("\n\treturn " + return_type_info.ret_conv_name + ";") + elif return_type_info.c_ty != "void": + out_c += ("\n\treturn ret_val;") + out_c += ("\n}\n\n") + + if args_known: + out_java_struct += ("\t\t") + if return_type_info.java_ty != "void": + out_java_struct += "const ret: " + return_type_info.java_ty + " = " + out_java_struct += ("bindings." + method_name + "(") + for idx, info in enumerate(argument_types): + if idx != 0: + out_java_struct += (", ") + if idx == 0 and takes_self: + out_java_struct += ("this.ptr") + elif info.arg_name in default_constructor_args: + out_java_struct += ("bindings." + info.java_hu_ty + "_new(") + for explode_idx, explode_arg in enumerate(default_constructor_args[info.arg_name]): + if explode_idx != 0: + out_java_struct += (", ") + expl_arg_name = info.arg_name + "_" + explode_arg.arg_name + if explode_arg.from_hu_conv is not None: + out_java_struct += ( + explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name)) + else: + out_java_struct += (expl_arg_name) + out_java_struct += (")") + elif info.from_hu_conv is not None: + out_java_struct += (info.from_hu_conv[0]) + else: + out_java_struct += (info.arg_name) + out_java_struct += (");\n") + if return_type_info.to_hu_conv is not None: + if not takes_self: + out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t").replace("this", + return_type_info.to_hu_conv_name) + "\n") + else: + out_java_struct += ("\t\t" + return_type_info.to_hu_conv.replace("\n", "\n\t\t") + "\n") + + for idx, info in enumerate(argument_types): + if idx == 0 and takes_self: + pass + elif info.arg_name in default_constructor_args: + for explode_arg in default_constructor_args[info.arg_name]: + expl_arg_name = info.arg_name + "_" + explode_arg.arg_name + if explode_arg.from_hu_conv is not None and return_type_info.to_hu_conv_name: + out_java_struct += ("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name, + expl_arg_name).replace( + "this", return_type_info.to_hu_conv_name) + ";\n") + elif info.from_hu_conv is not None and info.from_hu_conv[1] != "": + if not takes_self and return_type_info.to_hu_conv_name is not None: + out_java_struct += ( + "\t\t" + info.from_hu_conv[1].replace("this", return_type_info.to_hu_conv_name).replace("\n", "\n\t\t") + ";\n") + else: + out_java_struct += ("\t\t" + info.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n") + + if return_type_info.to_hu_conv_name is not None: + out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n") + elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth: + out_java_struct += ("\t\treturn ret;\n") + out_java_struct += ("\t}\n\n") + + return (out_java, out_c, out_java_struct) + + def cleanup(self): + for struct in self.struct_file_suffixes: + with open(self.outdir + "/structs/" + struct + self.file_ext, "a") as src: + src.write(self.struct_file_suffixes[struct]) + + with open(self.outdir + "/bindings.py", "a") as bindings: + bindings.write(""" + +js_invoke = function(obj_ptr: number, fn_id: number, arg1: bigint|number, arg2: bigint|number, arg3: bigint|number, arg4: bigint|number, arg5: bigint|number, arg6: bigint|number, arg7: bigint|number, arg8: bigint|number, arg9: bigint|number, arg10: bigint|number) { + const weak: WeakRef|undefined = js_objs[obj_ptr]; + if (weak == null || weak == undefined) { + console.error("Got function call on unknown/free'd JS object!"); + throw new Error("Got function call on unknown/free'd JS object!"); + } + const obj = weak.deref(); + if (obj == null || obj == undefined) { + console.error("Got function call on GC'd JS object!"); + throw new Error("Got function call on GC'd JS object!"); + } + var fn; +""") + bindings.write("\tswitch (fn_id) {\n") + for f in self.function_ptrs: + bindings.write(f"\t\tcase {str(f)}: fn = Object.getOwnPropertyDescriptor(obj, \"{self.function_ptrs[f][1]}\"); break;\n") + + bindings.write("""\t\tdefault: + console.error("Got unknown function call from C!"); + throw new Error("Got unknown function call from C!"); + } + if (fn == null || fn == undefined) { + console.error("Got function call on incorrect JS object!"); + throw new Error("Got function call on incorrect JS object!"); + } + const ret = fn.value.bind(obj)(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10); + if (ret === undefined || ret === null) return BigInt(0); + return BigInt(ret); +}""")