X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=genbindings.py;h=fef5ef93c2e4b0b6ec8f205513e6e2ca2c7cab06;hb=dcc0209b7f867a6956ebdb9a94e9e4a3f5399102;hp=78bb2ad875d8761006b612b13758df3254f1202a;hpb=8ce0ca412929b53499fece65584c7ec065a1972f;p=ldk-java diff --git a/genbindings.py b/genbindings.py index 78bb2ad8..fef5ef93 100755 --- a/genbindings.py +++ b/genbindings.py @@ -1,145 +1,524 @@ #!/usr/bin/env python3 import sys, re -if len(sys.argv) != 5: - print("USAGE: /path/to/lightning.h /path/to/bindings/output.java /path/to/bindings/output.c debug") +if len(sys.argv) != 6: + print("USAGE: /path/to/lightning.h /path/to/bindings/output.java /path/to/bindings/ /path/to/bindings/output.c debug") print("debug should be true or false and indicates whether to track allocations and ensure we don't leak") sys.exit(1) +hu_struct_file_prefix = """package org.ldk.structs; + +import org.ldk.impl.bindings; +import org.ldk.enums.*; +import org.ldk.util.*; +import java.util.Arrays; + +@SuppressWarnings("unchecked") // We correctly assign various generic arrays +""" + +c_file_pfx = """#include \"org_ldk_impl_bindings.h\" +#include +#include +#include +#include +""" + +if sys.argv[5] == "false": + c_file_pfx = c_file_pfx + """#define MALLOC(a, _) malloc(a) +#define FREE(p) if ((long)(p) > 1024) { free(p); } +#define DO_ASSERT(a) (void)(a) +#define CHECK(a) +""" +else: + c_file_pfx = c_file_pfx + """#include +// 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. +#include +#include +#include +static mtx_t allocation_mtx; + +void __attribute__((constructor)) init_mtx() { + DO_ASSERT(mtx_init(&allocation_mtx, mtx_plain) == thrd_success); +} + +#define BT_MAX 128 +typedef struct allocation { + struct allocation* next; + void* ptr; + const char* struct_name; + void* bt[BT_MAX]; + int bt_len; +} allocation; +static allocation* allocation_ll = NULL; + +void* __real_malloc(size_t len); +void* __real_calloc(size_t nmemb, size_t len); +static void new_allocation(void* res, const char* struct_name) { + allocation* new_alloc = __real_malloc(sizeof(allocation)); + new_alloc->ptr = res; + new_alloc->struct_name = struct_name; + new_alloc->bt_len = backtrace(new_alloc->bt, BT_MAX); + DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success); + new_alloc->next = allocation_ll; + allocation_ll = new_alloc; + DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success); +} +static void* MALLOC(size_t len, const char* struct_name) { + void* res = __real_malloc(len); + new_allocation(res, struct_name); + return res; +} +void __real_free(void* ptr); +static void alloc_freed(void* ptr) { + allocation* p = NULL; + DO_ASSERT(mtx_lock(&allocation_mtx) == thrd_success); + allocation* it = allocation_ll; + while (it->ptr != ptr) { + p = it; it = it->next; + if (it == NULL) { + fprintf(stderr, "Tried to free unknown pointer %p at:\\n", ptr); + void* bt[BT_MAX]; + int bt_len = backtrace(bt, BT_MAX); + backtrace_symbols_fd(bt, bt_len, STDERR_FILENO); + fprintf(stderr, "\\n\\n"); + DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success); + return; // addrsan should catch malloc-unknown and print more info than we have + } + } + if (p) { p->next = it->next; } else { allocation_ll = it->next; } + DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success); + DO_ASSERT(it->ptr == ptr); + __real_free(it); +} +static void FREE(void* ptr) { + if ((long)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys + alloc_freed(ptr); + __real_free(ptr); +} + +void* __wrap_malloc(size_t len) { + void* res = __real_malloc(len); + new_allocation(res, "malloc call"); + return res; +} +void* __wrap_calloc(size_t nmemb, size_t len) { + void* res = __real_calloc(nmemb, len); + new_allocation(res, "calloc call"); + return res; +} +void __wrap_free(void* ptr) { + if (ptr == NULL) return; + alloc_freed(ptr); + __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); + void* res = __real_realloc(ptr, len); + new_allocation(res, "realloc call"); + return res; +} +void __wrap_reallocarray(void* ptr, size_t new_sz) { + // Rust doesn't seem to use reallocarray currently + assert(false); +} + +void __attribute__((destructor)) check_leaks() { + for (allocation* a = allocation_ll; a != NULL; a = a->next) { + fprintf(stderr, "%s %p remains:\\n", a->struct_name, a->ptr); + backtrace_symbols_fd(a->bt, a->bt_len, STDERR_FILENO); + fprintf(stderr, "\\n\\n"); + } + DO_ASSERT(allocation_ll == NULL); +} +""" + +c_file = "" +def write_c(s): + global c_file + c_file += s + class TypeInfo: - def __init__(self, rust_obj, java_ty, java_fn_ty_arg, c_ty, passed_as_ptr, is_ptr, var_name, arr_len): + def __init__(self, is_native_primitive, rust_obj, java_ty, java_fn_ty_arg, java_hu_ty, c_ty, passed_as_ptr, is_ptr, var_name, arr_len, arr_access, subty=None): + self.is_native_primitive = is_native_primitive self.rust_obj = rust_obj self.java_ty = java_ty + self.java_hu_ty = java_hu_ty self.java_fn_ty_arg = java_fn_ty_arg self.c_ty = c_ty self.passed_as_ptr = passed_as_ptr self.is_ptr = is_ptr self.var_name = var_name self.arr_len = arr_len + self.arr_access = arr_access + self.subty = subty + self.pass_by_ref = is_ptr + self.requires_clone = None class ConvInfo: - def __init__(self, ty_info, arg_name, arg_conv, arg_conv_name, ret_conv, ret_conv_name): + def __init__(self, ty_info, arg_name, arg_conv, arg_conv_name, arg_conv_cleanup, ret_conv, ret_conv_name, to_hu_conv, to_hu_conv_name, from_hu_conv): assert(ty_info.c_ty is not None) assert(ty_info.java_ty is not None) assert(arg_name is not None) + self.passed_as_ptr = ty_info.passed_as_ptr + self.rust_obj = ty_info.rust_obj self.c_ty = ty_info.c_ty self.java_ty = ty_info.java_ty + self.java_hu_ty = ty_info.java_hu_ty self.java_fn_ty_arg = ty_info.java_fn_ty_arg + self.is_native_primitive = ty_info.is_native_primitive self.arg_name = arg_name self.arg_conv = arg_conv self.arg_conv_name = arg_conv_name + self.arg_conv_cleanup = arg_conv_cleanup self.ret_conv = ret_conv self.ret_conv_name = ret_conv_name + self.to_hu_conv = to_hu_conv + self.to_hu_conv_name = to_hu_conv_name + self.from_hu_conv = from_hu_conv def print_ty(self): - out_c.write(self.c_ty) + write_c(self.c_ty) out_java.write(self.java_ty) def print_name(self): if self.arg_name != "": out_java.write(" " + self.arg_name) - out_c.write(" " + self.arg_name) + write_c(" " + self.arg_name) else: out_java.write(" arg") - out_c.write(" arg") - -with open(sys.argv[1]) as in_h, open(sys.argv[2], "w") as out_java, open(sys.argv[3], "w") as out_c: - opaque_structs = set() - trait_structs = set() - unitary_enums = set() - - var_is_arr_regex = re.compile("\(\*([A-za-z_]*)\)\[([0-9]*)\]") - var_ty_regex = re.compile("([A-za-z_0-9]*)(.*)") - def java_c_types(fn_arg, ret_arr_len): - fn_arg = fn_arg.strip() - if fn_arg.startswith("MUST_USE_RES "): - fn_arg = fn_arg[13:] - is_const = False - if fn_arg.startswith("const "): - fn_arg = fn_arg[6:] - is_const = True + write_c(" arg") + +def camel_to_snake(s): + # Convert camel case to snake case, in a way that appears to match cbindgen + con = "_" + ret = "" + lastchar = "" + lastund = False + for char in s: + if lastchar.isupper(): + if not char.isupper() and not lastund: + ret = ret + "_" + lastund = True + else: + lastund = False + ret = ret + lastchar.lower() + else: + ret = ret + lastchar + if char.isupper() and not lastund: + ret = ret + "_" + lastund = True + else: + lastund = False + lastchar = char + if char.isnumeric(): + lastund = True + return (ret + lastchar.lower()).strip("_") + +unitary_enums = set() +complex_enums = set() +opaque_structs = set() +trait_structs = set() +result_types = set() +tuple_types = {} + +var_is_arr_regex = re.compile("\(\*([A-za-z0-9_]*)\)\[([a-z0-9]*)\]") +var_ty_regex = re.compile("([A-za-z_0-9]*)(.*)") +java_c_types_none_allowed = True # Unset when we do the real pass that populates the above sets +def java_c_types(fn_arg, ret_arr_len): + fn_arg = fn_arg.strip() + if fn_arg.startswith("MUST_USE_RES "): + fn_arg = fn_arg[13:] + is_const = False + if fn_arg.startswith("const "): + fn_arg = fn_arg[6:] + is_const = True + if fn_arg.startswith("struct "): + fn_arg = fn_arg[7:] + if fn_arg.startswith("enum "): + fn_arg = fn_arg[5:] + fn_arg = fn_arg.replace("NONNULL_PTR", "") + is_ptr = False + take_by_ptr = False + rust_obj = None + arr_access = None + java_hu_ty = None + if fn_arg.startswith("LDKThirtyTwoBytes"): + fn_arg = "uint8_t (*" + fn_arg[18:] + ")[32]" + assert var_is_arr_regex.match(fn_arg[8:]) + rust_obj = "LDKThirtyTwoBytes" + arr_access = "data" + elif fn_arg.startswith("LDKPublicKey"): + fn_arg = "uint8_t (*" + fn_arg[13:] + ")[33]" + assert var_is_arr_regex.match(fn_arg[8:]) + rust_obj = "LDKPublicKey" + arr_access = "compressed_form" + elif fn_arg.startswith("LDKSecretKey"): + fn_arg = "uint8_t (*" + fn_arg[13:] + ")[32]" + assert var_is_arr_regex.match(fn_arg[8:]) + rust_obj = "LDKSecretKey" + arr_access = "bytes" + elif fn_arg.startswith("LDKSignature"): + fn_arg = "uint8_t (*" + fn_arg[13:] + ")[64]" + assert var_is_arr_regex.match(fn_arg[8:]) + rust_obj = "LDKSignature" + arr_access = "compact_form" + elif fn_arg.startswith("LDKThreeBytes"): + fn_arg = "uint8_t (*" + fn_arg[14:] + ")[3]" + assert var_is_arr_regex.match(fn_arg[8:]) + rust_obj = "LDKThreeBytes" + arr_access = "data" + elif fn_arg.startswith("LDKFourBytes"): + fn_arg = "uint8_t (*" + fn_arg[13:] + ")[4]" + assert var_is_arr_regex.match(fn_arg[8:]) + rust_obj = "LDKFourBytes" + arr_access = "data" + elif fn_arg.startswith("LDKSixteenBytes"): + fn_arg = "uint8_t (*" + fn_arg[16:] + ")[16]" + assert var_is_arr_regex.match(fn_arg[8:]) + rust_obj = "LDKSixteenBytes" + arr_access = "data" + elif fn_arg.startswith("LDKTenBytes"): + fn_arg = "uint8_t (*" + fn_arg[12:] + ")[10]" + assert var_is_arr_regex.match(fn_arg[8:]) + rust_obj = "LDKTenBytes" + arr_access = "data" + elif fn_arg.startswith("LDKu8slice"): + fn_arg = "uint8_t (*" + fn_arg[11:] + ")[datalen]" + assert var_is_arr_regex.match(fn_arg[8:]) + rust_obj = "LDKu8slice" + arr_access = "data" + elif fn_arg.startswith("LDKCVec_u8Z"): + fn_arg = "uint8_t (*" + fn_arg[12:] + ")[datalen]" + rust_obj = "LDKCVec_u8Z" + assert var_is_arr_regex.match(fn_arg[8:]) + arr_access = "data" + elif fn_arg.startswith("LDKTransaction"): + fn_arg = "uint8_t (*" + fn_arg[15:] + ")[datalen]" + rust_obj = "LDKTransaction" + assert var_is_arr_regex.match(fn_arg[8:]) + arr_access = "data" + elif fn_arg.startswith("LDKCVec_"): is_ptr = False - take_by_ptr = False - rust_obj = None - if fn_arg.startswith("void"): - java_ty = "void" - c_ty = "void" - fn_ty_arg = "V" - fn_arg = fn_arg[4:].strip() - elif fn_arg.startswith("bool"): - java_ty = "boolean" - c_ty = "jboolean" - fn_ty_arg = "Z" - fn_arg = fn_arg[4:].strip() - elif fn_arg.startswith("uint8_t"): - java_ty = "byte" - c_ty = "jbyte" - fn_ty_arg = "B" - fn_arg = fn_arg[7:].strip() - elif fn_arg.startswith("uint16_t"): - java_ty = "short" - c_ty = "jshort" - fn_ty_arg = "S" - fn_arg = fn_arg[8:].strip() - elif fn_arg.startswith("uint32_t"): - java_ty = "int" - c_ty = "jint" - fn_ty_arg = "I" + if "*" in fn_arg: + fn_arg = fn_arg.replace("*", "") + is_ptr = True + + tyn = fn_arg[8:].split(" ") + assert tyn[0].endswith("Z") + if tyn[0] == "u64Z": + new_arg = "uint64_t" + else: + new_arg = "LDK" + tyn[0][:-1] + for a in tyn[1:]: + new_arg = new_arg + " " + a + res = java_c_types(new_arg, ret_arr_len) + if res is None: + assert java_c_types_none_allowed + return None + if is_ptr: + res.pass_by_ref = True + if res.is_native_primitive or res.passed_as_ptr: + return TypeInfo(rust_obj=fn_arg.split(" ")[0], java_ty=res.java_ty + "[]", java_hu_ty=res.java_hu_ty + "[]", + java_fn_ty_arg="[" + res.java_fn_ty_arg, c_ty=res.c_ty + "Array", passed_as_ptr=False, is_ptr=is_ptr, + var_name=res.var_name, arr_len="datalen", arr_access="data", subty=res, is_native_primitive=False) + else: + return TypeInfo(rust_obj=fn_arg.split(" ")[0], java_ty=res.java_ty + "[]", java_hu_ty=res.java_hu_ty + "[]", + java_fn_ty_arg="[" + res.java_fn_ty_arg, c_ty="jobjectArray", passed_as_ptr=False, is_ptr=is_ptr, + var_name=res.var_name, arr_len="datalen", arr_access="data", subty=res, is_native_primitive=False) + + is_primitive = False + arr_len = None + if fn_arg.startswith("void"): + java_ty = "void" + c_ty = "void" + fn_ty_arg = "V" + fn_arg = fn_arg[4:].strip() + is_primitive = True + elif fn_arg.startswith("bool"): + java_ty = "boolean" + c_ty = "jboolean" + fn_ty_arg = "Z" + fn_arg = fn_arg[4:].strip() + is_primitive = True + elif fn_arg.startswith("uint8_t"): + java_ty = "byte" + c_ty = "jbyte" + fn_ty_arg = "B" + fn_arg = fn_arg[7:].strip() + is_primitive = True + elif fn_arg.startswith("uint16_t"): + java_ty = "short" + c_ty = "jshort" + fn_ty_arg = "S" + fn_arg = fn_arg[8:].strip() + is_primitive = True + elif fn_arg.startswith("uint32_t"): + java_ty = "int" + c_ty = "jint" + fn_ty_arg = "I" + fn_arg = fn_arg[8:].strip() + is_primitive = True + elif fn_arg.startswith("uint64_t") or fn_arg.startswith("uintptr_t"): + java_ty = "long" + c_ty = "jlong" + fn_ty_arg = "J" + if fn_arg.startswith("uint64_t"): fn_arg = fn_arg[8:].strip() - elif fn_arg.startswith("uint64_t"): + else: + fn_arg = fn_arg[9:].strip() + is_primitive = True + elif is_const and fn_arg.startswith("char *"): + java_ty = "String" + c_ty = "const char*" + fn_ty_arg = "Ljava/lang/String;" + fn_arg = fn_arg[6:].strip() + elif fn_arg.startswith("LDKStr"): + java_ty = "String" + c_ty = "jstring" + fn_ty_arg = "Ljava/lang/String;" + fn_arg = fn_arg[6:].strip() + arr_access = "chars" + arr_len = "len" + else: + ma = var_ty_regex.match(fn_arg) + if ma.group(1).strip() in unitary_enums: + java_ty = ma.group(1).strip() + c_ty = "jclass" + fn_ty_arg = "Lorg/ldk/enums/" + ma.group(1).strip() + ";" + fn_arg = ma.group(2).strip() + rust_obj = ma.group(1).strip() + take_by_ptr = True + elif ma.group(1).strip().startswith("LDKC2Tuple"): java_ty = "long" + java_hu_ty = "TwoTuple<" + if not ma.group(1).strip() in tuple_types: + assert java_c_types_none_allowed + return None + for idx, ty_info in enumerate(tuple_types[ma.group(1).strip()][0]): + if idx != 0: + java_hu_ty = java_hu_ty + ", " + if ty_info.is_native_primitive: + if ty_info.java_hu_ty == "int": + java_hu_ty = java_hu_ty + "Integer" # Java concrete integer type is Integer, not Int + else: + java_hu_ty = java_hu_ty + ty_info.java_hu_ty.title() # If we're a primitive, capitalize the first letter + else: + java_hu_ty = java_hu_ty + ty_info.java_hu_ty + java_hu_ty = java_hu_ty + ">" c_ty = "jlong" fn_ty_arg = "J" - fn_arg = fn_arg[8:].strip() - elif is_const and fn_arg.startswith("char *"): - java_ty = "String" - c_ty = "const char*" - fn_ty_arg = "Ljava/lang/String;" - fn_arg = fn_arg[6:].strip() - else: - ma = var_ty_regex.match(fn_arg) - if ma.group(1).strip() in unitary_enums: - java_ty = ma.group(1).strip() - c_ty = "jclass" - fn_ty_arg = "Lorg/ldk/impl/bindings$" + ma.group(1).strip() + ";" - fn_arg = ma.group(2).strip() - rust_obj = ma.group(1).strip() - take_by_ptr = True - else: - java_ty = "long" - c_ty = "jlong" - fn_ty_arg = "J" - fn_arg = ma.group(2).strip() - rust_obj = ma.group(1).strip() - take_by_ptr = True - - if fn_arg.startswith(" *") or fn_arg.startswith("*"): - fn_arg = fn_arg.replace("*", "").strip() - is_ptr = True + fn_arg = ma.group(2).strip() + rust_obj = ma.group(1).strip() + take_by_ptr = True + elif ma.group(1).strip().startswith("LDKC3Tuple"): + java_ty = "long" + java_hu_ty = "ThreeTuple<" + if not ma.group(1).strip() in tuple_types: + assert java_c_types_none_allowed + return None + for idx, ty_info in enumerate(tuple_types[ma.group(1).strip()][0]): + if idx != 0: + java_hu_ty = java_hu_ty + ", " + if ty_info.is_native_primitive: + if ty_info.java_hu_ty == "int": + java_hu_ty = java_hu_ty + "Integer" # Java concrete integer type is Integer, not Int + else: + java_hu_ty = java_hu_ty + ty_info.java_hu_ty.title() # If we're a primitive, capitalize the first letter + else: + java_hu_ty = java_hu_ty + ty_info.java_hu_ty + java_hu_ty = java_hu_ty + ">" c_ty = "jlong" + fn_ty_arg = "J" + fn_arg = ma.group(2).strip() + rust_obj = ma.group(1).strip() + take_by_ptr = True + else: java_ty = "long" + java_hu_ty = ma.group(1).strip().replace("LDKCResult", "Result").replace("LDK", "") + c_ty = "jlong" + fn_ty_arg = "J" + fn_arg = ma.group(2).strip() + rust_obj = ma.group(1).strip() + take_by_ptr = True + + if fn_arg.startswith(" *") or fn_arg.startswith("*"): + fn_arg = fn_arg.replace("*", "").strip() + is_ptr = True + c_ty = "jlong" + java_ty = "long" + fn_ty_arg = "J" + is_primitive = False - var_is_arr = var_is_arr_regex.match(fn_arg) - if var_is_arr is not None or ret_arr_len is not None: - assert(not take_by_ptr) - assert(not is_ptr) - java_ty = java_ty + "[]" - c_ty = c_ty + "Array" - if var_is_arr is not None: - return TypeInfo(rust_obj=None, java_ty=java_ty, java_fn_ty_arg="[" + fn_ty_arg, c_ty=c_ty, - passed_as_ptr=False, is_ptr=False, var_name=var_is_arr.group(1), arr_len=var_is_arr.group(2)) - return TypeInfo(rust_obj=rust_obj, java_ty=java_ty, java_fn_ty_arg=fn_ty_arg, c_ty=c_ty, passed_as_ptr=is_ptr or take_by_ptr, - is_ptr=is_ptr, var_name=fn_arg, arr_len=None) - - def map_type(fn_arg, print_void, ret_arr_len, is_free): + var_is_arr = var_is_arr_regex.match(fn_arg) + if var_is_arr is not None or ret_arr_len is not None: + assert(not take_by_ptr) + assert(not is_ptr) + java_ty = java_ty + "[]" + c_ty = c_ty + "Array" + if var_is_arr is not None: + if var_is_arr.group(1) == "": + return TypeInfo(rust_obj=rust_obj, java_ty=java_ty, java_hu_ty=java_ty, java_fn_ty_arg="[" + fn_ty_arg, c_ty=c_ty, + passed_as_ptr=False, is_ptr=False, var_name="arg", arr_len=var_is_arr.group(2), arr_access=arr_access, is_native_primitive=False) + return TypeInfo(rust_obj=rust_obj, java_ty=java_ty, java_hu_ty=java_ty, java_fn_ty_arg="[" + fn_ty_arg, c_ty=c_ty, + passed_as_ptr=False, is_ptr=False, var_name=var_is_arr.group(1), arr_len=var_is_arr.group(2), arr_access=arr_access, is_native_primitive=False) + + if java_hu_ty is None: + java_hu_ty = java_ty + return TypeInfo(rust_obj=rust_obj, java_ty=java_ty, java_hu_ty=java_hu_ty, java_fn_ty_arg=fn_ty_arg, c_ty=c_ty, passed_as_ptr=is_ptr or take_by_ptr, + is_ptr=is_ptr, var_name=fn_arg, arr_len=arr_len, arr_access=arr_access, is_native_primitive=is_primitive) + +fn_ptr_regex = re.compile("^extern const ([A-Za-z_0-9\* ]*) \(\*(.*)\)\((.*)\);$") +fn_ret_arr_regex = re.compile("(.*) \(\*(.*)\((.*)\)\)\[([0-9]*)\];$") +reg_fn_regex = re.compile("([A-Za-z_0-9\* ]* \*?)([a-zA-Z_0-9]*)\((.*)\);$") +clone_fns = set() +constructor_fns = {} +c_array_class_caches = set() +with open(sys.argv[1]) as in_h: + for line in in_h: + reg_fn = reg_fn_regex.match(line) + if reg_fn is not None: + if reg_fn.group(2).endswith("_clone"): + clone_fns.add(reg_fn.group(2)) + else: + rty = java_c_types(reg_fn.group(1), None) + if rty is not None and rty.rust_obj is not None and reg_fn.group(2) == rty.java_hu_ty + "_new": + constructor_fns[rty.rust_obj] = reg_fn.group(3) + continue + arr_fn = fn_ret_arr_regex.match(line) + if arr_fn is not None: + if arr_fn.group(2).endswith("_clone"): + clone_fns.add(arr_fn.group(2)) + # No object constructors return arrays, as then they wouldn't be an object constructor + continue + +# Define some manual clones... +clone_fns.add("ThirtyTwoBytes_clone") +write_c("static inline struct LDKThirtyTwoBytes ThirtyTwoBytes_clone(const struct LDKThirtyTwoBytes *orig) { struct LDKThirtyTwoBytes ret; memcpy(ret.data, orig->data, 32); return ret; }\n") + +java_c_types_none_allowed = False # C structs created by cbindgen are declared in dependency order + +with open(sys.argv[1]) as in_h, open(sys.argv[2], "w") as out_java: + def map_type(fn_arg, print_void, ret_arr_len, is_free, holds_ref): ty_info = java_c_types(fn_arg, ret_arr_len) + return map_type_with_info(ty_info, print_void, ret_arr_len, is_free, holds_ref) + def map_type_with_info(ty_info, print_void, ret_arr_len, is_free, holds_ref): if ty_info.c_ty == "void": if not print_void: return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = None, arg_conv_name = None, ret_conv = None, ret_conv_name = None) - + arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None, + ret_conv = None, ret_conv_name = None, to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None) if ty_info.c_ty.endswith("Array"): arr_len = ty_info.arr_len if arr_len is not None: @@ -147,395 +526,1315 @@ with open(sys.argv[1]) as in_h, open(sys.argv[2], "w") as out_java, open(sys.arg else: arr_name = "ret" arr_len = ret_arr_len - assert(ty_info.c_ty == "jbyteArray") - return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = "unsigned char " + arr_name + "_arr[" + arr_len + "];\n" + - "(*_env)->GetByteArrayRegion (_env, """ + arr_name + ", 0, " + arr_len + ", " + arr_name + "_arr);\n" + - "unsigned char (*""" + arr_name + "_ref)[" + arr_len + "] = &" + arr_name + "_arr;", - arg_conv_name = arr_name + "_ref", - ret_conv = ("jbyteArray " + arr_name + "_arr = (*_env)->NewByteArray(_env, " + arr_len + ");\n" + - "(*_env)->SetByteArrayRegion(_env, " + arr_name + "_arr, 0, " + arr_len + ", *", - ");"), - ret_conv_name = arr_name + "_arr") - elif ty_info.var_name != "": - # If we have a parameter name, print it (noting that it may indicate its a pointer) - if ty_info.rust_obj is not None: - assert(ty_info.passed_as_ptr) - if not ty_info.is_ptr: - if ty_info.rust_obj in unitary_enums: - return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = " + ty_info.rust_obj + "_from_java(_env, " + ty_info.var_name + ");", - arg_conv_name = ty_info.var_name + "_conv", - ret_conv = ("jclass " + ty_info.var_name + "_conv = " + ty_info.rust_obj + "_to_java(_env, ", ");"), - ret_conv_name = ty_info.var_name + "_conv") - base_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = *(" + ty_info.rust_obj + "*)" + ty_info.var_name + ";"; - if ty_info.rust_obj in trait_structs: - if not is_free: - base_conv = base_conv + "\n" + ty_info.rust_obj + "_JCalls_clone(" + ty_info.var_name + "_conv.this_arg);" - else: - base_conv = base_conv + "\n" + "FREE((void*)" + ty_info.var_name + ");" - return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = base_conv, - arg_conv_name = ty_info.var_name + "_conv", - ret_conv = None, ret_conv_name = None) - base_conv = base_conv + "\nFREE((void*)" + ty_info.var_name + ");"; - if ty_info.rust_obj in opaque_structs: - return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = base_conv + "\n" + ty_info.var_name + "_conv._underlying_ref = false;", - arg_conv_name = ty_info.var_name + "_conv", - ret_conv = None, ret_conv_name = None) + if ty_info.c_ty == "jbyteArray": + ret_conv = ("jbyteArray " + arr_name + "_arr = (*_env)->NewByteArray(_env, " + arr_len + ");\n" + "(*_env)->SetByteArrayRegion(_env, " + arr_name + "_arr, 0, " + arr_len + ", ", "") + arg_conv_cleanup = None + if not arr_len.isdigit(): + arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n" + arg_conv = arg_conv + arr_name + "_ref." + arr_len + " = (*_env)->GetArrayLength (_env, " + arr_name + ");\n" + if (not ty_info.is_ptr or not holds_ref) and ty_info.rust_obj != "LDKu8slice": + arg_conv = arg_conv + arr_name + "_ref." + ty_info.arr_access + " = MALLOC(" + arr_name + "_ref." + arr_len + ", \"" + ty_info.rust_obj + " Bytes\");\n" + arg_conv = arg_conv + "(*_env)->GetByteArrayRegion(_env, " + arr_name + ", 0, " + arr_name + "_ref." + arr_len + ", " + arr_name + "_ref." + ty_info.arr_access + ");" + else: + arg_conv = arg_conv + arr_name + "_ref." + ty_info.arr_access + " = (*_env)->GetByteArrayElements (_env, " + arr_name + ", NULL);" + arg_conv_cleanup = "(*_env)->ReleaseByteArrayElements(_env, " + arr_name + ", (int8_t*)" + arr_name + "_ref." + ty_info.arr_access + ", 0);" + if ty_info.rust_obj == "LDKTransaction": + arg_conv = arg_conv + "\n" + arr_name + "_ref.data_is_owned = " + str(holds_ref).lower() + ";" + ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "") + ret_conv = (ret_conv[0], ";\njbyteArray " + arr_name + "_arr = (*_env)->NewByteArray(_env, " + arr_name + "_var." + arr_len + ");\n") + ret_conv = (ret_conv[0], ret_conv[1] + "(*_env)->SetByteArrayRegion(_env, " + arr_name + "_arr, 0, " + arr_name + "_var." + arr_len + ", " + arr_name + "_var." + ty_info.arr_access + ");") + if not holds_ref and ty_info.rust_obj != "LDKu8slice": + ret_conv = (ret_conv[0], ret_conv[1] + "\n" + ty_info.rust_obj.replace("LDK", "") + "_free(" + arr_name + "_var);") + elif ty_info.rust_obj is not None: + arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n" + arg_conv = arg_conv + "CHECK((*_env)->GetArrayLength (_env, " + arr_name + ") == " + arr_len + ");\n" + arg_conv = arg_conv + "(*_env)->GetByteArrayRegion (_env, " + arr_name + ", 0, " + arr_len + ", " + arr_name + "_ref." + ty_info.arr_access + ");" + ret_conv = (ret_conv[0], "." + ty_info.arr_access + ");") + else: + arg_conv = "unsigned char " + arr_name + "_arr[" + arr_len + "];\n" + arg_conv = arg_conv + "CHECK((*_env)->GetArrayLength (_env, " + arr_name + ") == " + arr_len + ");\n" + arg_conv = arg_conv + "(*_env)->GetByteArrayRegion (_env, " + arr_name + ", 0, " + arr_len + ", " + arr_name + "_arr);\n" + "unsigned char (*" + arr_name + "_ref)[" + arr_len + "] = &" + arr_name + "_arr;" + ret_conv = (ret_conv[0] + "*", ");") + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = arg_conv, arg_conv_name = arr_name + "_ref", arg_conv_cleanup = arg_conv_cleanup, + ret_conv = ret_conv, ret_conv_name = arr_name + "_arr", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None) + else: + assert not arr_len.isdigit() # fixed length arrays not implemented + assert ty_info.java_ty[len(ty_info.java_ty) - 2:] == "[]" + conv_name = "arr_conv_" + str(len(ty_info.java_hu_ty)) + idxc = chr(ord('a') + (len(ty_info.java_hu_ty) % 26)) + ty_info.subty.var_name = conv_name + if ty_info.is_ptr or holds_ref: + ty_info.subty.requires_clone = False + subty = map_type_with_info(ty_info.subty, False, None, is_free, holds_ref) + if arr_name == "": + arr_name = "arg" + arg_conv = ty_info.rust_obj + " " + arr_name + "_constr;\n" + arg_conv = arg_conv + arr_name + "_constr." + arr_len + " = (*_env)->GetArrayLength (_env, " + arr_name + ");\n" + arg_conv = arg_conv + "if (" + arr_name + "_constr." + arr_len + " > 0)\n" + if subty.rust_obj is None: + szof = subty.c_ty + else: + szof = subty.rust_obj + arg_conv = arg_conv + "\t" + arr_name + "_constr." + ty_info.arr_access + " = MALLOC(" + arr_name + "_constr." + arr_len + " * sizeof(" + szof + "), \"" + ty_info.rust_obj + " Elements\");\n" + arg_conv = arg_conv + "else\n" + arg_conv = arg_conv + "\t" + arr_name + "_constr." + ty_info.arr_access + " = NULL;\n" + if not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"): + arg_conv = arg_conv + ty_info.java_ty.strip("[]") + "* " + arr_name + "_vals = (*_env)->Get" + ty_info.subty.java_ty.title() + "ArrayElements (_env, " + arr_name + ", NULL);\n" + arg_conv = arg_conv + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_constr." + arr_len + "; " + idxc + "++) {\n" + if not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"): + arg_conv = arg_conv + "\t" + ty_info.java_ty.strip("[]") + " " + conv_name + " = " + arr_name + "_vals[" + idxc + "];" + if subty.arg_conv is not None: + arg_conv = arg_conv + "\n\t" + subty.arg_conv.replace("\n", "\n\t") + else: + arg_conv = arg_conv + "\tjobject " + conv_name + " = (*_env)->GetObjectArrayElement(_env, " + arr_name + ", " + idxc + ");\n" + arg_conv = arg_conv + "\t" + subty.arg_conv.replace("\n", "\n\t") + arg_conv = arg_conv + "\n\t" + arr_name + "_constr." + ty_info.arr_access + "[" + idxc + "] = " + subty.arg_conv_name + ";\n}" + if not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"): + arg_conv = arg_conv + "\n(*_env)->Release" + ty_info.java_ty.strip("[]").title() + "ArrayElements (_env, " + arr_name + ", " + arr_name + "_vals, 0);" + if ty_info.is_ptr: + arg_conv_name = "&" + arr_name + "_constr" + else: + arg_conv_name = arr_name + "_constr" + arg_conv_cleanup = None + if ty_info.is_ptr: + arg_conv_cleanup = "FREE(" + arr_name + "_constr." + ty_info.arr_access + ");" - return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", - ret_conv = None, ret_conv_name = None) + if arr_name == "arg": + arr_name = "ret" + ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "") + if subty.ret_conv is None: + ret_conv = ("DUMMY", "DUMMY") + elif not ty_info.java_ty[:len(ty_info.java_ty) - 2].endswith("[]"): + ret_conv = (ret_conv[0], ";\n" + ty_info.c_ty + " " + arr_name + "_arr = (*_env)->New" + ty_info.java_ty.strip("[]").title() + "Array(_env, " + arr_name + "_var." + arr_len + ");\n") + ret_conv = (ret_conv[0], ret_conv[1] + subty.c_ty + " *" + arr_name + "_arr_ptr = (*_env)->GetPrimitiveArrayCritical(_env, " + arr_name + "_arr, NULL);\n") + ret_conv = (ret_conv[0], ret_conv[1] + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_var." + arr_len + "; " + idxc + "++) {\n") + ret_conv = (ret_conv[0], ret_conv[1] + "\t" + subty.ret_conv[0].replace("\n", "\n\t")) + ret_conv = (ret_conv[0], ret_conv[1] + arr_name + "_var." + ty_info.arr_access + "[" + idxc + "]" + subty.ret_conv[1].replace("\n", "\n\t")) + ret_conv = (ret_conv[0], ret_conv[1] + "\n\t" + arr_name + "_arr_ptr[" + idxc + "] = " + subty.ret_conv_name + ";\n") + ret_conv = (ret_conv[0], ret_conv[1] + "}\n(*_env)->ReleasePrimitiveArrayCritical(_env, " + arr_name + "_arr, " + arr_name + "_arr_ptr, 0);") else: - assert(not is_free) - return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";", - arg_conv_name = ty_info.var_name + "_conv", - ret_conv = None, ret_conv_name = None) - elif ty_info.is_ptr: + assert ty_info.java_fn_ty_arg.startswith("[") + clz_var = ty_info.java_fn_ty_arg[1:].replace("[", "arr_of_") + c_array_class_caches.add(clz_var) + ret_conv = (ret_conv[0], ";\n" + ty_info.c_ty + " " + arr_name + "_arr = (*_env)->NewObjectArray(_env, " + arr_name + "_var." + arr_len + ", " + clz_var + "_clz, NULL);\n") + ret_conv = (ret_conv[0], ret_conv[1] + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_var." + arr_len + "; " + idxc + "++) {\n") + ret_conv = (ret_conv[0], ret_conv[1] + "\t" + subty.ret_conv[0].replace("\n", "\n\t")) + ret_conv = (ret_conv[0], ret_conv[1] + arr_name + "_var." + ty_info.arr_access + "[" + idxc + "]" + subty.ret_conv[1].replace("\n", "\n\t")) + ret_conv = (ret_conv[0], ret_conv[1] + "\n\t(*_env)->SetObjectArrayElement(_env, " + arr_name + "_arr, " + idxc + ", " + subty.ret_conv_name + ");\n") + ret_conv = (ret_conv[0], ret_conv[1] + "}") + if not holds_ref: + # Note that we don't drop the full vec here - we're passing ownership to java (or have cloned) or free'd by now! + ret_conv = (ret_conv[0], ret_conv[1] + "\nFREE(" + arr_name + "_var." + ty_info.arr_access + ");") + + to_hu_conv = None + to_hu_conv_name = None + if subty.to_hu_conv is not None: + to_hu_conv = ty_info.java_hu_ty + " " + conv_name + "_arr = new " + ty_info.subty.java_hu_ty.split("<")[0] + "[" + arr_name + ".length];\n" + to_hu_conv = to_hu_conv + "for (int " + idxc + " = 0; " + idxc + " < " + arr_name + ".length; " + idxc + "++) {\n" + to_hu_conv = to_hu_conv + "\t" + subty.java_ty + " " + conv_name + " = " + arr_name + "[" + idxc + "];\n" + to_hu_conv = to_hu_conv + "\t" + subty.to_hu_conv.replace("\n", "\n\t") + "\n" + to_hu_conv = to_hu_conv + "\t" + conv_name + "_arr[" + idxc + "] = " + subty.to_hu_conv_name + ";\n}" + to_hu_conv_name = conv_name + "_arr" + from_hu_conv = None + if subty.from_hu_conv is not None: + if subty.java_ty == "long" and subty.java_hu_ty != "long": + from_hu_conv = ("Arrays.stream(" + arr_name + ").mapToLong(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray()", "/* TODO 2 " + subty.java_hu_ty + " */") + elif subty.java_ty == "long": + from_hu_conv = ("Arrays.stream(" + arr_name + ").map(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray()", "/* TODO 2 " + subty.java_hu_ty + " */") + else: + from_hu_conv = ("(" + ty_info.java_ty + ")Arrays.stream(" + arr_name + ").map(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray()", "/* TODO 2 " + subty.java_hu_ty + " */") + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = None, arg_conv_name = ty_info.var_name, ret_conv = None, ret_conv_name = None) - elif ty_info.java_ty == "String": + arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = arg_conv_cleanup, + ret_conv = ret_conv, ret_conv_name = arr_name + "_arr", to_hu_conv = to_hu_conv, to_hu_conv_name = to_hu_conv_name, from_hu_conv = from_hu_conv) + elif ty_info.java_ty == "String": + if ty_info.arr_access is None: return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = None, arg_conv_name = None, - ret_conv = ("jstring " + ty_info.var_name + "_conv = (*_env)->NewStringUTF(_env, ", ");"), ret_conv_name = ty_info.var_name + "_conv") + arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None, + ret_conv = ("jstring " + ty_info.var_name + "_conv = (*_env)->NewStringUTF(_env, ", ");"), ret_conv_name = ty_info.var_name + "_conv", + to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None) else: return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = None, arg_conv_name = ty_info.var_name, ret_conv = None, ret_conv_name = None) - elif not print_void: + arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None, + ret_conv = ("LDKStr " + ty_info.var_name + "_str = ", + ";\nchar* " + ty_info.var_name + "_buf = MALLOC(" + ty_info.var_name + "_str." + ty_info.arr_len + " + 1, \"str conv buf\");\n" + + "memcpy(" + ty_info.var_name + "_buf, " + ty_info.var_name + "_str." + ty_info.arr_access + ", " + ty_info.var_name + "_str." + ty_info.arr_len + ");\n" + + ty_info.var_name + "_buf[" + ty_info.var_name + "_str." + ty_info.arr_len + "] = 0;\n" + + "jstring " + ty_info.var_name + "_conv = (*_env)->NewStringUTF(_env, " + ty_info.var_name + "_str." + ty_info.arr_access + ");\n" + + "FREE(" + ty_info.var_name + "_buf);"), + ret_conv_name = ty_info.var_name + "_conv", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None) + elif ty_info.var_name == "" and not print_void: # We don't have a parameter name, and want one, just call it arg if ty_info.rust_obj is not None: - assert(not is_free or ty_info.rust_obj not in opaque_structs); + assert(not is_free or ty_info.rust_obj not in opaque_structs) return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, arg_conv = ty_info.rust_obj + " arg_conv = *(" + ty_info.rust_obj + "*)arg;\nFREE((void*)arg);", - arg_conv_name = "arg_conv", - ret_conv = None, ret_conv_name = None) + arg_conv_name = "arg_conv", arg_conv_cleanup = None, + ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 7", to_hu_conv_name = None, from_hu_conv = None) else: assert(not is_free) return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = None, arg_conv_name = "arg", ret_conv = None, ret_conv_name = None) + arg_conv = None, arg_conv_name = "arg", arg_conv_cleanup = None, + ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 8", to_hu_conv_name = None, from_hu_conv = None) + elif ty_info.rust_obj is None: + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = None, arg_conv_name = ty_info.var_name, arg_conv_cleanup = None, + ret_conv = None, ret_conv_name = None, to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None) else: - # We don't have a parameter name, and don't want one (cause we're returning) - if ty_info.rust_obj is not None: - if not ty_info.is_ptr: - if ty_info.rust_obj in unitary_enums: - return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = ty_info.rust_obj + " ret = " + ty_info.rust_obj + "_from_java(_env, " + ty_info.var_name + ");", - arg_conv_name = "ret", - ret_conv = ("jclass ret = " + ty_info.rust_obj + "_to_java(_env, ", ");"), ret_conv_name = "ret") - if ty_info.rust_obj in opaque_structs: - # If we're returning a newly-allocated struct, we don't want Rust to ever - # free, instead relying on the Java GC to lose the ref. We undo this in - # any _free function. - # To avoid any issues, we first assert that the incoming object is non-ref. - return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - ret_conv = (ty_info.rust_obj + "* ret = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*ret = ", ";\nassert(!ret->_underlying_ref);\nret->_underlying_ref = true;"), - ret_conv_name = "(long)ret", - arg_conv = None, arg_conv_name = None) + if ty_info.var_name == "": + ty_info.var_name = "ret" + + if ty_info.rust_obj in opaque_structs: + opaque_arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv;\n" + opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.inner = (void*)(" + ty_info.var_name + " & (~1));\n" + if ty_info.is_ptr and holds_ref: + opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.is_owned = false;" + else: + opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.is_owned = (" + ty_info.var_name + " & 1) || (" + ty_info.var_name + " == 0);" + if not is_free and (not ty_info.is_ptr or not holds_ref or ty_info.requires_clone == True) and ty_info.requires_clone != False: + if (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns: + # TODO: This is a bit too naive, even with the checks above, we really need to know if rust wants a ref or not, not just if its pass as a ptr. + opaque_arg_conv = opaque_arg_conv + "\nif (" + ty_info.var_name + "_conv.inner != NULL)\n" + opaque_arg_conv = opaque_arg_conv + "\t" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&" + ty_info.var_name + "_conv);" + elif ty_info.passed_as_ptr: + opaque_arg_conv = opaque_arg_conv + "\n// Warning: we may need a move here but can't clone!" + + opaque_ret_conv_suf = ";\n" + if not holds_ref and ty_info.is_ptr and (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns: # is_ptr, not holds_ref implies passing a pointed-to value to java, which needs copied + opaque_ret_conv_suf = opaque_ret_conv_suf + "if (" + ty_info.var_name + "->inner != NULL)\n" + opaque_ret_conv_suf = opaque_ret_conv_suf + "\t" + ty_info.var_name + "_var = " + ty_info.rust_obj.replace("LDK", "") + "_clone(" + ty_info.var_name + ");\n" + elif not holds_ref and ty_info.is_ptr: + opaque_ret_conv_suf = opaque_ret_conv_suf + "// Warning: we may need a move here but can't clone!\n" + + opaque_ret_conv_suf = opaque_ret_conv_suf + "CHECK((((long)" + ty_info.var_name + "_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.\n" + opaque_ret_conv_suf = opaque_ret_conv_suf + "CHECK((((long)&" + ty_info.var_name + "_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.\n" + if holds_ref: + opaque_ret_conv_suf = opaque_ret_conv_suf + "long " + ty_info.var_name + "_ref = (long)" + ty_info.var_name + "_var.inner & ~1;" + else: + opaque_ret_conv_suf = opaque_ret_conv_suf + "long " + ty_info.var_name + "_ref = (long)" + ty_info.var_name + "_var.inner;\n" + opaque_ret_conv_suf = opaque_ret_conv_suf + "if (" + ty_info.var_name + "_var.is_owned) {\n" + opaque_ret_conv_suf = opaque_ret_conv_suf + "\t" + ty_info.var_name + "_ref |= 1;\n" + opaque_ret_conv_suf = opaque_ret_conv_suf + "}" + + if ty_info.is_ptr: + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = opaque_arg_conv, arg_conv_name = "&" + ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = *", opaque_ret_conv_suf), + ret_conv_name = ty_info.var_name + "_ref", + to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");", + to_hu_conv_name = ty_info.var_name + "_hu_conv", + from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")")) + else: + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = opaque_arg_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = ", opaque_ret_conv_suf), + ret_conv_name = ty_info.var_name + "_ref", + to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");", + to_hu_conv_name = ty_info.var_name + "_hu_conv", + from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")")) + + if not ty_info.is_ptr: + if ty_info.rust_obj in unitary_enums: + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = " + ty_info.rust_obj + "_from_java(_env, " + ty_info.var_name + ");", + arg_conv_name = ty_info.var_name + "_conv", + arg_conv_cleanup = None, + ret_conv = ("jclass " + ty_info.var_name + "_conv = " + ty_info.rust_obj + "_to_java(_env, ", ");"), + ret_conv_name = ty_info.var_name + "_conv", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None) + base_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = *(" + ty_info.rust_obj + "*)" + ty_info.var_name + ";" + if ty_info.rust_obj in trait_structs: + if not is_free: + needs_full_clone = not is_free and (not ty_info.is_ptr and not holds_ref or ty_info.requires_clone == True) and ty_info.requires_clone != False + if needs_full_clone and (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns: + base_conv = base_conv + "\n" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(" + ty_info.var_name + ");" + else: + base_conv = 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_clone(" + ty_info.var_name + "_conv.this_arg);\n}" + if needs_full_clone: + base_conv = base_conv + "// Warning: we may need a move here but can't do a full clone!\n" + + else: + base_conv = base_conv + "\n" + "FREE((void*)" + ty_info.var_name + ");" + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = (ty_info.rust_obj + "* ret = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*ret = ", ";"), + ret_conv_name = "(long)ret", + to_hu_conv = ty_info.java_hu_ty + " ret_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");\nret_hu_conv.ptrs_to.add(this);", + to_hu_conv_name = "ret_hu_conv", + from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")")) + if ty_info.rust_obj != "LDKu8slice": + # Don't bother free'ing slices passed in - Rust doesn't auto-free the + # underlying unlike Vecs, and it gives Java more freedom. + base_conv = base_conv + "\nFREE((void*)" + ty_info.var_name + ");"; + if ty_info.rust_obj in complex_enums: + ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";") + if not holds_ref: + ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_copy = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n", "") + if ty_info.requires_clone == True: # Set in object array mapping + if (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns: + ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&", ");\n") + else: + ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", "; // XXX: We likely need to clone here, but no _clone fn is available!\n") + else: + ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", ";\n") + ret_conv = (ret_conv[0], ret_conv[1] + "long " + ty_info.var_name + "_ref = (long)" + ty_info.var_name + "_copy;") + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = ret_conv, ret_conv_name = ty_info.var_name + "_ref", + to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = " + ty_info.java_hu_ty + ".constr_from_ptr(" + ty_info.var_name + ");\n" + ty_info.var_name + "_hu_conv.ptrs_to.add(this);", + to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + ".ptr", "")) + if ty_info.rust_obj in result_types: + if holds_ref: + # If we're trying to return a ref, we have to clone. + # We just blindly assume its implemented and let the compiler fail if its not. + ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_conv = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*" + ty_info.var_name + "_conv = ", ";") + ret_conv = (ret_conv[0], ret_conv[1] + "\n*" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(" + ty_info.var_name + "_conv);") else: + ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_conv = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*" + ty_info.var_name + "_conv = ", ";") + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = ret_conv, ret_conv_name = "(long)" + ty_info.var_name + "_conv", + to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = " + ty_info.java_hu_ty + ".constr_from_ptr(" + ty_info.var_name + ");", + to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + " != null ? " + ty_info.var_name + ".ptr : 0", "")) + if ty_info.rust_obj in tuple_types: + from_hu_conv = "bindings." + tuple_types[ty_info.rust_obj][1].replace("LDK", "") + "_new(" + to_hu_conv_pfx = "" + to_hu_conv_sfx = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " + ty_info.java_hu_ty + "(" + for idx, conv in enumerate(tuple_types[ty_info.rust_obj][0]): + if idx != 0: + to_hu_conv_sfx = to_hu_conv_sfx + ", " + from_hu_conv = from_hu_conv + ", " + conv.var_name = ty_info.var_name + "_" + chr(idx + ord("a")) + conv_map = map_type_with_info(conv, False, None, is_free, holds_ref) + to_hu_conv_pfx = to_hu_conv_pfx + conv.java_ty + " " + ty_info.var_name + "_" + chr(idx + ord("a")) + " = " + "bindings." + tuple_types[ty_info.rust_obj][1] + "_get_" + chr(idx + ord("a")) + "(" + ty_info.var_name + ");\n" + if conv_map.to_hu_conv is not None: + to_hu_conv_pfx = to_hu_conv_pfx + conv_map.to_hu_conv + ";\n" + to_hu_conv_sfx = to_hu_conv_sfx + conv_map.to_hu_conv_name + else: + to_hu_conv_sfx = to_hu_conv_sfx + ty_info.var_name + "_" + chr(idx + ord("a")) + if conv_map.from_hu_conv is not None: + from_hu_conv = from_hu_conv + conv_map.from_hu_conv[0].replace(ty_info.var_name + "_" + chr(idx + ord("a")), ty_info.var_name + "." + chr(idx + ord("a"))) + if conv_map.from_hu_conv[1] != "": + from_hu_conv = from_hu_conv + "/*XXX: " + conv_map.from_hu_conv[1] + "*/" + else: + from_hu_conv = from_hu_conv + ty_info.var_name + "." + chr(idx + ord("a")) + + if not ty_info.is_ptr and not holds_ref: return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - ret_conv = (ty_info.rust_obj + "* ret = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*ret = ", ";"), - ret_conv_name = "(long)ret", - arg_conv = None, arg_conv_name = None) + arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + + ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_ref = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*" + ty_info.var_name + "_ref = ", ";"), + ret_conv_name = "(long)" + ty_info.var_name + "_ref", + to_hu_conv = to_hu_conv_pfx + to_hu_conv_sfx + ");", to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (from_hu_conv + ")", "")) + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";"), ret_conv_name = ty_info.var_name + "_ref", + to_hu_conv = to_hu_conv_pfx + to_hu_conv_sfx + ");", to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (from_hu_conv + ")", "")) + + # The manually-defined types - TxOut and Transaction + assert ty_info.rust_obj == "LDKTxOut" + if not ty_info.is_ptr and not holds_ref: + ret_conv = ("LDKTxOut* " + ty_info.var_name + "_ref = MALLOC(sizeof(LDKTxOut), \"LDKTxOut\");\n*" + ty_info.var_name + "_ref = ", ";") else: + ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";") + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = ret_conv, ret_conv_name = "(long)" + ty_info.var_name + "_ref", + to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " +ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");", + to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (ty_info.var_name + ".ptr", "")) + elif ty_info.is_ptr: + assert(not is_free) + if ty_info.rust_obj in complex_enums: return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - ret_conv = ("long ret = (long)", ";"), ret_conv_name = "ret", - arg_conv = None, arg_conv_name = None) - else: + arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";", + arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = ("long ret_" + ty_info.var_name + " = (long)", ";"), ret_conv_name = "ret_" + ty_info.var_name, + to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = " + ty_info.java_hu_ty + ".constr_from_ptr(" + ty_info.var_name + ");", + to_hu_conv_name = ty_info.var_name + "_hu_conv", + from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")")) + elif ty_info.rust_obj in trait_structs: + if ty_info.rust_obj.replace("LDK", "") + "_clone" in clone_fns: + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";", + arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_clone = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n" + + "*" + ty_info.var_name + "_clone = " + ty_info.rust_obj.replace("LDK", "") + "_clone(", ");"), + ret_conv_name = "(long)" + ty_info.var_name + "_clone", + to_hu_conv = ty_info.java_hu_ty + " ret_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");\nret_hu_conv.ptrs_to.add(this);", + to_hu_conv_name = "ret_hu_conv", + from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")")) + else: + return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, + arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";", + arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = ("long ret_" + ty_info.var_name + " = (long)", ";"), ret_conv_name = "ret_" + ty_info.var_name, + to_hu_conv = ty_info.java_hu_ty + " ret_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");\nret_hu_conv.ptrs_to.add(this);", + to_hu_conv_name = "ret_hu_conv", + from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")")) return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, - arg_conv = None, arg_conv_name = None, ret_conv = None, ret_conv_name = None) + arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";", + arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, + ret_conv = ("long ret_" + ty_info.var_name + " = (long)", ";"), ret_conv_name = "ret_" + ty_info.var_name, + to_hu_conv = "TODO 3", to_hu_conv_name = None, from_hu_conv = None) # its a pointer, no conv needed + assert False # We should have handled every case by now. - def map_fn(re_match, ret_arr_len): - out_java.write("\t/// " + line) + def map_fn(line, re_match, ret_arr_len, c_call_string): + out_java.write("\t// " + line) out_java.write("\tpublic static native ") - out_c.write("JNIEXPORT ") + write_c("JNIEXPORT ") + + is_free = re_match.group(2).endswith("_free") + struct_meth = re_match.group(2).split("_")[0] - ret_info = map_type(re_match.group(1), True, ret_arr_len, False) + ret_info = map_type(re_match.group(1), True, ret_arr_len, False, False) ret_info.print_ty() + if ret_info.ret_conv is not None: ret_conv_pfx, ret_conv_sfx = ret_info.ret_conv out_java.write(" " + re_match.group(2) + "(") - out_c.write(" JNICALL Java_org_ldk_impl_bindings_" + re_match.group(2).replace('_', '_1') + "(JNIEnv * _env, jclass _b") + write_c(" JNICALL Java_org_ldk_impl_bindings_" + re_match.group(2).replace('_', '_1') + "(JNIEnv * _env, jclass _b") arg_names = [] + default_constructor_args = {} + takes_self = False + args_known = True for idx, arg in enumerate(re_match.group(3).split(',')): if idx != 0: out_java.write(", ") if arg != "void": - out_c.write(", ") - arg_conv_info = map_type(arg, False, None, re_match.group(2).endswith("_free")) + write_c(", ") + arg_conv_info = map_type(arg, False, None, is_free, True) if arg_conv_info.c_ty != "void": arg_conv_info.print_ty() arg_conv_info.print_name() + if idx == 0 and arg_conv_info.java_hu_ty == struct_meth: + takes_self = True + if arg_conv_info.arg_conv is not None and "Warning" in arg_conv_info.arg_conv: + if arg_conv_info.rust_obj in constructor_fns: + assert not is_free + for explode_arg in constructor_fns[arg_conv_info.rust_obj].split(','): + explode_arg_conv = map_type(explode_arg, False, None, False, True) + if explode_arg_conv.c_ty == "void": + # We actually want to handle this case, but for now its only used in NetGraphMsgHandler::new() + # which ends up resulting in a redundant constructor - both without arguments for the NetworkGraph. + args_known = False + pass + if not arg_conv_info.arg_name in default_constructor_args: + default_constructor_args[arg_conv_info.arg_name] = [] + default_constructor_args[arg_conv_info.arg_name].append(explode_arg_conv) arg_names.append(arg_conv_info) + out_java_struct = None + if ("LDK" + struct_meth in opaque_structs or "LDK" + struct_meth in trait_structs) and not is_free: + out_java_struct = open(sys.argv[3] + "/structs/" + struct_meth + ".java", "a") + if not args_known: + out_java_struct.write("\t// Skipped " + re_match.group(2) + "\n") + out_java_struct.close() + out_java_struct = None + else: + meth_n = re_match.group(2)[len(struct_meth) + 1:] + if not takes_self: + out_java_struct.write("\tpublic static " + ret_info.java_hu_ty + " constructor_" + meth_n + "(") + else: + out_java_struct.write("\tpublic " + ret_info.java_hu_ty + " " + meth_n + "(") + for idx, arg in enumerate(arg_names): + if idx != 0: + if not takes_self or idx > 1: + out_java_struct.write(", ") + 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.write(", ") + out_java_struct.write(explode_arg.java_hu_ty + " " + arg.arg_name + "_" + explode_arg.arg_name) + else: + out_java_struct.write(arg.java_hu_ty + " " + arg.arg_name) + + out_java.write(");\n") - out_c.write(") {\n") + write_c(") {\n") + if out_java_struct is not None: + out_java_struct.write(") {\n") for info in arg_names: if info.arg_conv is not None: - out_c.write("\t" + info.arg_conv.replace('\n', "\n\t") + "\n"); + write_c("\t" + info.arg_conv.replace('\n', "\n\t") + "\n") if ret_info.ret_conv is not None: - out_c.write("\t" + ret_conv_pfx.replace('\n', '\n\t')); + write_c("\t" + ret_conv_pfx.replace('\n', '\n\t')) + elif ret_info.c_ty != "void": + write_c("\t" + ret_info.c_ty + " ret_val = ") else: - out_c.write("\treturn "); + write_c("\t") - out_c.write(re_match.group(2) + "(") + if c_call_string is None: + write_c(re_match.group(2) + "(") + else: + write_c(c_call_string) for idx, info in enumerate(arg_names): if info.arg_conv_name is not None: if idx != 0: - out_c.write(", ") - out_c.write(info.arg_conv_name) - out_c.write(")") + write_c(", ") + elif c_call_string is not None: + continue + write_c(info.arg_conv_name) + write_c(")") if ret_info.ret_conv is not None: - out_c.write(ret_conv_sfx.replace('\n', '\n\t')) - out_c.write("\n\treturn " + ret_info.ret_conv_name + ";") + write_c(ret_conv_sfx.replace('\n', '\n\t')) else: - out_c.write(";") - out_c.write("\n}\n\n") + write_c(";") + for info in arg_names: + if info.arg_conv_cleanup is not None: + write_c("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t")) + if ret_info.ret_conv is not None: + write_c("\n\treturn " + ret_info.ret_conv_name + ";") + elif ret_info.c_ty != "void": + write_c("\n\treturn ret_val;") + write_c("\n}\n\n") + if out_java_struct is not None: + out_java_struct.write("\t\t") + if ret_info.java_ty != "void": + out_java_struct.write(ret_info.java_ty + " ret = ") + out_java_struct.write("bindings." + re_match.group(2) + "(") + for idx, info in enumerate(arg_names): + if idx != 0: + out_java_struct.write(", ") + if idx == 0 and takes_self: + out_java_struct.write("this.ptr") + elif info.arg_name in default_constructor_args: + out_java_struct.write("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.write(", ") + expl_arg_name = info.arg_name + "_" + explode_arg.arg_name + if explode_arg.from_hu_conv is not None: + out_java_struct.write(explode_arg.from_hu_conv[0].replace(explode_arg.arg_name, expl_arg_name)) + else: + out_java_struct.write(expl_arg_name) + out_java_struct.write(")") + elif info.from_hu_conv is not None: + out_java_struct.write(info.from_hu_conv[0]) + else: + out_java_struct.write(info.arg_name) + out_java_struct.write(");\n") + if ret_info.to_hu_conv is not None: + if not takes_self: + out_java_struct.write("\t\t" + ret_info.to_hu_conv.replace("\n", "\n\t\t").replace("this", ret_info.to_hu_conv_name) + "\n") + else: + out_java_struct.write("\t\t" + ret_info.to_hu_conv.replace("\n", "\n\t\t") + "\n") + + for idx, info in enumerate(arg_names): + 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 ret_info.to_hu_conv_name: + out_java_struct.write("\t\t" + explode_arg.from_hu_conv[1].replace(explode_arg.arg_name, expl_arg_name).replace("this", ret_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 ret_info.to_hu_conv_name is not None: + out_java_struct.write("\t\t" + info.from_hu_conv[1].replace("this", ret_info.to_hu_conv_name) + ";\n") + else: + out_java_struct.write("\t\t" + info.from_hu_conv[1] + ";\n") + + if ret_info.to_hu_conv_name is not None: + out_java_struct.write("\t\treturn " + ret_info.to_hu_conv_name + ";\n") + elif ret_info.java_ty != "void" and ret_info.rust_obj != "LDK" + struct_meth: + out_java_struct.write("\t\treturn ret;\n") + out_java_struct.write("\t}\n\n") + out_java_struct.close() + + def map_unitary_enum(struct_name, field_lines): + with open(sys.argv[3] + "/enums/" + struct_name + ".java", "w") as out_java_enum: + out_java_enum.write("package org.ldk.enums;\n\n") + unitary_enums.add(struct_name) + write_c("static inline " + struct_name + " " + struct_name + "_from_java(JNIEnv *env, jclass val) {\n") + write_c("\tswitch ((*env)->CallIntMethod(env, val, ordinal_meth)) {\n") + ord_v = 0 + for idx, struct_line in enumerate(field_lines): + if idx == 0: + out_java_enum.write("public enum " + struct_name + " {\n") + elif idx == len(field_lines) - 3: + assert(struct_line.endswith("_Sentinel,")) + elif idx == len(field_lines) - 2: + out_java_enum.write("\t; static native void init();\n") + out_java_enum.write("\tstatic { init(); }\n") + out_java_enum.write("}") + out_java.write("\tstatic { " + struct_name + ".values(); /* Force enum statics to run */ }\n") + elif idx == len(field_lines) - 1: + assert(struct_line == "") + else: + out_java_enum.write(struct_line + "\n") + write_c("\t\tcase %d: return %s;\n" % (ord_v, struct_line.strip().strip(","))) + ord_v = ord_v + 1 + write_c("\t}\n") + write_c("\tabort();\n") + write_c("}\n") + + ord_v = 0 + write_c("static jclass " + struct_name + "_class = NULL;\n") + for idx, struct_line in enumerate(field_lines): + if idx > 0 and idx < len(field_lines) - 3: + variant = struct_line.strip().strip(",") + write_c("static jfieldID " + struct_name + "_" + variant + " = NULL;\n") + write_c("JNIEXPORT void JNICALL Java_org_ldk_enums_" + struct_name.replace("_", "_1") + "_init (JNIEnv * env, jclass clz) {\n") + write_c("\t" + struct_name + "_class = (*env)->NewGlobalRef(env, clz);\n") + write_c("\tCHECK(" + struct_name + "_class != NULL);\n") + for idx, struct_line in enumerate(field_lines): + if idx > 0 and idx < len(field_lines) - 3: + variant = struct_line.strip().strip(",") + write_c("\t" + struct_name + "_" + variant + " = (*env)->GetStaticFieldID(env, " + struct_name + "_class, \"" + variant + "\", \"Lorg/ldk/enums/" + struct_name + ";\");\n") + write_c("\tCHECK(" + struct_name + "_" + variant + " != NULL);\n") + write_c("}\n") + write_c("static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\n") + write_c("\tswitch (val) {\n") + for idx, struct_line in enumerate(field_lines): + if idx > 0 and idx < len(field_lines) - 3: + variant = struct_line.strip().strip(",") + write_c("\t\tcase " + variant + ":\n") + write_c("\t\t\treturn (*env)->GetStaticObjectField(env, " + struct_name + "_class, " + struct_name + "_" + variant + ");\n") + ord_v = ord_v + 1 + write_c("\t\tdefault: abort();\n") + write_c("\t}\n") + write_c("}\n\n") + + def map_complex_enum(struct_name, union_enum_items): + java_hu_type = struct_name.replace("LDK", "") + complex_enums.add(struct_name) + with open(sys.argv[3] + "/structs/" + java_hu_type + ".java", "w") as out_java_enum: + out_java_enum.write(hu_struct_file_prefix) + out_java_enum.write("public class " + java_hu_type + " extends CommonBase {\n") + out_java_enum.write("\tprivate " + java_hu_type + "(Object _dummy, long ptr) { super(ptr); }\n") + out_java_enum.write("\t@Override @SuppressWarnings(\"deprecation\")\n") + out_java_enum.write("\tprotected void finalize() throws Throwable {\n") + out_java_enum.write("\t\tsuper.finalize();\n") + out_java_enum.write("\t\tif (ptr != 0) { bindings." + java_hu_type + "_free(ptr); }\n") + out_java_enum.write("\t}\n") + out_java_enum.write("\tstatic " + java_hu_type + " constr_from_ptr(long ptr) {\n") + out_java_enum.write("\t\tbindings." + struct_name + " raw_val = bindings." + struct_name + "_ref_from_ptr(ptr);\n") + java_hu_subclasses = "" + + tag_field_lines = union_enum_items["field_lines"] + init_meth_jty_strs = {} + for idx, struct_line in enumerate(tag_field_lines): + if idx == 0: + out_java.write("\tpublic static class " + struct_name + " {\n") + out_java.write("\t\tprivate " + struct_name + "() {}\n") + elif idx == len(tag_field_lines) - 3: + assert(struct_line.endswith("_Sentinel,")) + elif idx == len(tag_field_lines) - 2: + out_java.write("\t\tstatic native void init();\n") + out_java.write("\t}\n") + elif idx == len(tag_field_lines) - 1: + assert(struct_line == "") + else: + var_name = struct_line.strip(' ,')[len(struct_name) + 1:] + out_java.write("\t\tpublic final static class " + var_name + " extends " + struct_name + " {\n") + java_hu_subclasses = java_hu_subclasses + "\tpublic final static class " + var_name + " extends " + java_hu_type + " {\n" + out_java_enum.write("\t\tif (raw_val.getClass() == bindings." + struct_name + "." + var_name + ".class) {\n") + out_java_enum.write("\t\t\treturn new " + var_name + "(ptr, (bindings." + struct_name + "." + var_name + ")raw_val);\n") + write_c("static jclass " + struct_name + "_" + var_name + "_class = NULL;\n") + write_c("static jmethodID " + struct_name + "_" + var_name + "_meth = NULL;\n") + init_meth_jty_str = "" + init_meth_params = "" + init_meth_body = "" + hu_conv_body = "" + if "LDK" + var_name in union_enum_items: + enum_var_lines = union_enum_items["LDK" + var_name] + for idx, field in enumerate(enum_var_lines): + if idx != 0 and idx < len(enum_var_lines) - 2: + field_ty = map_type(field.strip(' ;'), False, None, False, True) + out_java.write("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.arg_name + ";\n") + java_hu_subclasses = java_hu_subclasses + "\t\tpublic final " + field_ty.java_hu_ty + " " + field_ty.arg_name + ";\n" + if field_ty.to_hu_conv is not None: + hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.java_ty + " " + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n" + hu_conv_body = hu_conv_body + "\t\t\t" + field_ty.to_hu_conv.replace("\n", "\n\t\t\t") + "\n" + hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = " + field_ty.to_hu_conv_name + ";\n" + else: + hu_conv_body = hu_conv_body + "\t\t\tthis." + field_ty.arg_name + " = obj." + field_ty.arg_name + ";\n" + init_meth_jty_str = init_meth_jty_str + field_ty.java_fn_ty_arg + if idx > 1: + init_meth_params = init_meth_params + ", " + init_meth_params = init_meth_params + field_ty.java_ty + " " + field_ty.arg_name + init_meth_body = init_meth_body + "this." + field_ty.arg_name + " = " + field_ty.arg_name + "; " + out_java.write("\t\t\t" + var_name + "(" + init_meth_params + ") { ") + out_java.write(init_meth_body) + out_java.write("}\n") + out_java.write("\t\t}\n") + out_java_enum.write("\t\t}\n") + java_hu_subclasses = java_hu_subclasses + "\t\tprivate " + var_name + "(long ptr, bindings." + struct_name + "." + var_name + " obj) {\n\t\t\tsuper(null, ptr);\n" + java_hu_subclasses = java_hu_subclasses + hu_conv_body + java_hu_subclasses = java_hu_subclasses + "\t\t}\n\t}\n" + init_meth_jty_strs[var_name] = init_meth_jty_str + out_java_enum.write("\t\tassert false; return null; // Unreachable without extending the (internal) bindings interface\n\t}\n\n") + out_java_enum.write(java_hu_subclasses) + out_java.write("\tstatic { " + struct_name + ".init(); }\n") + out_java.write("\tpublic static native " + struct_name + " " + struct_name + "_ref_from_ptr(long ptr);\n"); + + write_c("JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_00024" + struct_name.replace("_", "_1") + "_init (JNIEnv * env, jclass _a) {\n") + for idx, struct_line in enumerate(tag_field_lines): + if idx != 0 and idx < len(tag_field_lines) - 3: + var_name = struct_line.strip(' ,')[len(struct_name) + 1:] + write_c("\t" + struct_name + "_" + var_name + "_class =\n") + write_c("\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + struct_name + "$" + var_name + ";\"));\n") + write_c("\tCHECK(" + struct_name + "_" + var_name + "_class != NULL);\n") + write_c("\t" + struct_name + "_" + var_name + "_meth = (*env)->GetMethodID(env, " + struct_name + "_" + var_name + "_class, \"\", \"(" + init_meth_jty_strs[var_name] + ")V\");\n") + write_c("\tCHECK(" + struct_name + "_" + var_name + "_meth != NULL);\n") + write_c("}\n") + write_c("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {\n") + write_c("\t" + struct_name + " *obj = (" + struct_name + "*)ptr;\n") + write_c("\tswitch(obj->tag) {\n") + for idx, struct_line in enumerate(tag_field_lines): + if idx != 0 and idx < len(tag_field_lines) - 3: + var_name = struct_line.strip(' ,')[len(struct_name) + 1:] + write_c("\t\tcase " + struct_name + "_" + var_name + ": {\n") + c_params_text = "" + if "LDK" + var_name in union_enum_items: + enum_var_lines = union_enum_items["LDK" + var_name] + for idx, field in enumerate(enum_var_lines): + if idx != 0 and idx < len(enum_var_lines) - 2: + field_map = map_type(field.strip(' ;'), False, None, False, True) + if field_map.ret_conv is not None: + write_c("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t")) + write_c("obj->" + camel_to_snake(var_name) + "." + field_map.arg_name) + write_c(field_map.ret_conv[1].replace("\n", "\n\t\t\t") + "\n") + c_params_text = c_params_text + ", " + field_map.ret_conv_name + else: + c_params_text = c_params_text + ", obj->" + camel_to_snake(var_name) + "." + field_map.arg_name + write_c("\t\t\treturn (*_env)->NewObject(_env, " + struct_name + "_" + var_name + "_class, " + struct_name + "_" + var_name + "_meth" + c_params_text + ");\n") + write_c("\t\t}\n") + write_c("\t\tdefault: abort();\n") + write_c("\t}\n}\n") + out_java_enum.write("}\n") def map_trait(struct_name, field_var_lines, trait_fn_lines): - out_c.write("typedef struct " + struct_name + "_JCalls {\n") - out_c.write("\tatomic_size_t refcnt;\n") - out_c.write("\tJNIEnv *env;\n") - out_c.write("\tjobject o;\n") - for var_line in field_var_lines: - if var_line.group(1) in trait_structs: - out_c.write("\t" + var_line.group(1) + "_JCalls* " + var_line.group(2) + ";\n") - for fn_line in trait_fn_lines: - if fn_line.group(2) != "free" and fn_line.group(2) != "clone": - out_c.write("\tjmethodID " + fn_line.group(2) + "_meth;\n") - out_c.write("} " + struct_name + "_JCalls;\n") + with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "w") as out_java_trait: + write_c("typedef struct " + struct_name + "_JCalls {\n") + write_c("\tatomic_size_t refcnt;\n") + write_c("\tJavaVM *vm;\n") + write_c("\tjweak o;\n") + field_var_convs = [] + for var_line in field_var_lines: + if var_line.group(1) in trait_structs: + write_c("\t" + var_line.group(1) + "_JCalls* " + var_line.group(2) + ";\n") + field_var_convs.append(None) + else: + field_var_convs.append(map_type(var_line.group(1) + " " + var_line.group(2), False, None, False, False)) + for fn_line in trait_fn_lines: + if fn_line.group(3) != "free" and fn_line.group(3) != "clone": + write_c("\tjmethodID " + fn_line.group(3) + "_meth;\n") + write_c("} " + struct_name + "_JCalls;\n") - out_java.write("\tpublic interface " + struct_name + " {\n") - java_meths = [] - for fn_line in trait_fn_lines: - java_meth_descr = "(" - if fn_line.group(2) != "free" and fn_line.group(2) != "clone": - ret_ty_info = java_c_types(fn_line.group(1), None) - - out_java.write("\t\t " + ret_ty_info.java_ty + " " + fn_line.group(2) + "(") - is_const = fn_line.group(3) is not None - out_c.write(fn_line.group(1) + fn_line.group(2) + "_jcall(") - if is_const: - out_c.write("const void* this_arg") + out_java_trait.write(hu_struct_file_prefix) + out_java_trait.write("public class " + struct_name.replace("LDK","") + " extends CommonBase {\n") + out_java_trait.write("\tfinal bindings." + struct_name + " bindings_instance;\n") + out_java_trait.write("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }\n") + out_java_trait.write("\tprivate " + struct_name.replace("LDK", "") + "(bindings." + struct_name + " arg") + for idx, var_line in enumerate(field_var_lines): + if var_line.group(1) in trait_structs: + out_java_trait.write(", bindings." + var_line.group(1) + " " + var_line.group(2)) else: - out_c.write("void* this_arg") + out_java_trait.write(", " + field_var_convs[idx].java_hu_ty + " " + var_line.group(2)) + out_java_trait.write(") {\n") + out_java_trait.write("\t\tsuper(bindings." + struct_name + "_new(arg") + for idx, var_line in enumerate(field_var_lines): + if var_line.group(1) in trait_structs: + out_java_trait.write(", " + var_line.group(2)) + elif field_var_convs[idx].from_hu_conv is not None: + out_java_trait.write(", " + field_var_convs[idx].from_hu_conv[0]) + else: + out_java_trait.write(", " + var_line.group(2)) + out_java_trait.write("));\n") + out_java_trait.write("\t\tthis.ptrs_to.add(arg);\n") + for idx, var_line in enumerate(field_var_lines): + if var_line.group(1) in trait_structs: + out_java_trait.write("\t\tthis.ptrs_to.add(" + var_line.group(2) + ");\n") + elif field_var_convs[idx].from_hu_conv is not None and field_var_convs[idx].from_hu_conv[1] != "": + out_java_trait.write("\t\t" + field_var_convs[idx].from_hu_conv[1] + ";\n") + out_java_trait.write("\t\tthis.bindings_instance = arg;\n") + out_java_trait.write("\t}\n") + out_java_trait.write("\t@Override @SuppressWarnings(\"deprecation\")\n") + out_java_trait.write("\tprotected void finalize() throws Throwable {\n") + out_java_trait.write("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); } super.finalize();\n") + out_java_trait.write("\t}\n\n") - arg_names = [] - for idx, arg in enumerate(fn_line.group(4).split(',')): - if arg == "": - continue - if idx >= 2: - out_java.write(", ") - out_c.write(", ") - arg_conv_info = map_type(arg, True, None, False) - out_c.write(arg.strip()) - out_java.write(arg_conv_info.java_ty + " " + arg_conv_info.arg_name) - arg_names.append(arg_conv_info) - java_meth_descr = java_meth_descr + arg_conv_info.java_fn_ty_arg - java_meth_descr = java_meth_descr + ")" + ret_ty_info.java_fn_ty_arg - java_meths.append(java_meth_descr) - - out_java.write(");\n") - out_c.write(") {\n") - out_c.write("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n") - - for arg_info in arg_names: - if arg_info.ret_conv is not None: - out_c.write("\t" + arg_info.ret_conv[0].replace('\n', '\n\t').replace("_env", "j_calls->env")); - out_c.write(arg_info.arg_name) - out_c.write(arg_info.ret_conv[1].replace('\n', '\n\t').replace("_env", "j_calls->env") + "\n") - - if not ret_ty_info.passed_as_ptr: - out_c.write("\treturn (*j_calls->env)->Call" + ret_ty_info.java_ty.title() + "Method(j_calls->env, j_calls->o, j_calls->" + fn_line.group(2) + "_meth") + java_trait_constr = "\tprivate static class " + struct_name + "Holder { " + struct_name.replace("LDK", "") + " held; }\n" + java_trait_constr = java_trait_constr + "\tpublic static " + struct_name.replace("LDK", "") + " new_impl(" + struct_name.replace("LDK", "") + "Interface arg" + for idx, var_line in enumerate(field_var_lines): + if var_line.group(1) in trait_structs: + # Ideally we'd be able to take any instance of the interface, but our C code can only represent + # Java-implemented version, so we require users pass a Java implementation here :/ + java_trait_constr = java_trait_constr + ", " + var_line.group(1).replace("LDK", "") + "." + var_line.group(1).replace("LDK", "") + "Interface " + var_line.group(2) + "_impl" else: - out_c.write("\t" + fn_line.group(1).strip() + "* ret = (" + fn_line.group(1).strip() + "*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->" + fn_line.group(2) + "_meth"); + java_trait_constr = java_trait_constr + ", " + field_var_convs[idx].java_hu_ty + " " + var_line.group(2) + java_trait_constr = java_trait_constr + ") {\n\t\tfinal " + struct_name + "Holder impl_holder = new " + struct_name + "Holder();\n" + java_trait_constr = java_trait_constr + "\t\timpl_holder.held = new " + struct_name.replace("LDK", "") + "(new bindings." + struct_name + "() {\n" + out_java_trait.write("\tpublic static interface " + struct_name.replace("LDK", "") + "Interface {\n") + out_java.write("\tpublic interface " + struct_name + " {\n") + java_meths = [] + for fn_line in trait_fn_lines: + java_meth_descr = "(" + if fn_line.group(3) != "free" and fn_line.group(3) != "clone": + ret_ty_info = map_type(fn_line.group(2), True, None, False, False) - for arg_info in arg_names: - if arg_info.ret_conv is not None: - out_c.write(", " + arg_info.ret_conv_name) + out_java.write("\t\t " + ret_ty_info.java_ty + " " + fn_line.group(3) + "(") + java_trait_constr = java_trait_constr + "\t\t\t@Override public " + ret_ty_info.java_ty + " " + fn_line.group(3) + "(" + out_java_trait.write("\t\t" + ret_ty_info.java_hu_ty + " " + fn_line.group(3) + "(") + is_const = fn_line.group(4) is not None + write_c(fn_line.group(2) + fn_line.group(3) + "_jcall(") + if is_const: + write_c("const void* this_arg") else: - out_c.write(", " + arg_info.arg_name) - out_c.write(");\n"); - - if ret_ty_info.passed_as_ptr: - out_c.write("\t" + fn_line.group(1).strip() + " res = *ret;\n") - out_c.write("\tFREE(ret);\n") - out_c.write("\treturn res;\n") - out_c.write("}\n") - elif fn_line.group(2) == "free": - out_c.write("static void " + struct_name + "_JCalls_free(void* this_arg) {\n") - out_c.write("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n") - out_c.write("\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n") - out_c.write("\t\t(*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);\n") - out_c.write("\t\tFREE(j_calls);\n") - out_c.write("\t}\n}\n") - - # Write out a clone function whether we need one or not, as we use them in moving to rust - out_c.write("static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n") - out_c.write("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n") - out_c.write("\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n") - for var_line in field_var_lines: - if var_line.group(1) in trait_structs: - out_c.write("\tatomic_fetch_add_explicit(&j_calls->" + var_line.group(2) + "->refcnt, 1, memory_order_release);\n") - out_c.write("\treturn (void*) this_arg;\n") - out_c.write("}\n") - - out_java.write("\t}\n") - - out_java.write("\tpublic static native long " + struct_name + "_new(" + struct_name + " impl") - out_c.write("static inline " + struct_name + " " + struct_name + "_init (JNIEnv * env, jclass _a, jobject o") - for var_line in field_var_lines: - if var_line.group(1) in trait_structs: - out_java.write(", " + var_line.group(1) + " " + var_line.group(2)) - out_c.write(", jobject " + var_line.group(2)) - out_java.write(");\n") - out_c.write(") {\n") - - out_c.write("\tjclass c = (*env)->GetObjectClass(env, o);\n") - out_c.write("\tassert(c != NULL);\n") - out_c.write("\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n") - out_c.write("\tatomic_init(&calls->refcnt, 1);\n") - out_c.write("\tcalls->env = env;\n") - out_c.write("\tcalls->o = (*env)->NewGlobalRef(env, o);\n") - for (fn_line, java_meth_descr) in zip(trait_fn_lines, java_meths): - if fn_line.group(2) != "free" and fn_line.group(2) != "clone": - out_c.write("\tcalls->" + fn_line.group(2) + "_meth = (*env)->GetMethodID(env, c, \"" + fn_line.group(2) + "\", \"" + java_meth_descr + "\");\n") - out_c.write("\tassert(calls->" + fn_line.group(2) + "_meth != NULL);\n") - out_c.write("\n\t" + struct_name + " ret = {\n") - out_c.write("\t\t.this_arg = (void*) calls,\n") + write_c("void* this_arg") + + arg_names = [] + for idx, arg in enumerate(fn_line.group(5).split(',')): + if arg == "": + continue + if idx >= 2: + out_java.write(", ") + java_trait_constr = java_trait_constr + ", " + out_java_trait.write(", ") + write_c(", ") + arg_conv_info = map_type(arg, True, None, False, False) + write_c(arg.strip()) + out_java.write(arg_conv_info.java_ty + " " + arg_conv_info.arg_name) + out_java_trait.write(arg_conv_info.java_hu_ty + " " + arg_conv_info.arg_name) + java_trait_constr = java_trait_constr + arg_conv_info.java_ty + " " + arg_conv_info.arg_name + arg_names.append(arg_conv_info) + java_meth_descr = java_meth_descr + arg_conv_info.java_fn_ty_arg + java_meth_descr = java_meth_descr + ")" + ret_ty_info.java_fn_ty_arg + java_meths.append((fn_line, java_meth_descr)) + + out_java.write(");\n") + out_java_trait.write(");\n") + java_trait_constr = java_trait_constr + ") {\n" + write_c(") {\n") + write_c("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n") + write_c("\tJNIEnv *_env;\n") + write_c("\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&_env, JNI_VERSION_1_8) == JNI_OK);\n") + + for arg_info in arg_names: + if arg_info.ret_conv is not None: + write_c("\t" + arg_info.ret_conv[0].replace('\n', '\n\t')); + write_c(arg_info.arg_name) + write_c(arg_info.ret_conv[1].replace('\n', '\n\t') + "\n") + if arg_info.to_hu_conv is not None: + java_trait_constr = java_trait_constr + "\t\t\t\t" + arg_info.to_hu_conv.replace("\n", "\n\t\t\t\t") + "\n" + + write_c("\tjobject obj = (*_env)->NewLocalRef(_env, j_calls->o);\n\tCHECK(obj != NULL);\n") + if ret_ty_info.c_ty.endswith("Array"): + write_c("\t" + ret_ty_info.c_ty + " arg = (*_env)->CallObjectMethod(_env, obj, j_calls->" + fn_line.group(3) + "_meth") + elif not ret_ty_info.passed_as_ptr: + write_c("\treturn (*_env)->Call" + ret_ty_info.java_ty.title() + "Method(_env, obj, j_calls->" + fn_line.group(3) + "_meth") + else: + write_c("\t" + fn_line.group(2).strip() + "* ret = (" + fn_line.group(2).strip() + "*)(*_env)->CallLongMethod(_env, obj, j_calls->" + fn_line.group(3) + "_meth"); + if ret_ty_info.java_ty != "void": + java_trait_constr = java_trait_constr + "\t\t\t\t" + ret_ty_info.java_hu_ty + " ret = arg." + fn_line.group(3) + "(" + else: + java_trait_constr = java_trait_constr + "\t\t\t\targ." + fn_line.group(3) + "(" + + for idx, arg_info in enumerate(arg_names): + if arg_info.ret_conv is not None: + write_c(", " + arg_info.ret_conv_name) + else: + write_c(", " + arg_info.arg_name) + if idx != 0: + java_trait_constr = java_trait_constr + ", " + if arg_info.to_hu_conv_name is not None: + java_trait_constr = java_trait_constr + arg_info.to_hu_conv_name + else: + java_trait_constr = java_trait_constr + arg_info.arg_name + write_c(");\n"); + if ret_ty_info.arg_conv is not None: + write_c("\t" + ret_ty_info.arg_conv.replace("\n", "\n\t") + "\n\treturn " + ret_ty_info.arg_conv_name + ";\n") + + write_c("}\n") + java_trait_constr = java_trait_constr + ");\n" + if ret_ty_info.java_ty != "void": + if ret_ty_info.from_hu_conv is not None: + java_trait_constr = java_trait_constr + "\t\t\t\t" + ret_ty_info.java_ty + " result = " + ret_ty_info.from_hu_conv[0] + ";\n" + if ret_ty_info.from_hu_conv[1] != "": + java_trait_constr = java_trait_constr + "\t\t\t\t" + ret_ty_info.from_hu_conv[1].replace("this", "impl_holder.held") + ";\n" + if ret_ty_info.rust_obj in result_types: + # Avoid double-free by breaking the result - we should learn to clone these and then we can be safe instead + java_trait_constr = java_trait_constr + "\t\t\t\tret.ptr = 0;\n" + java_trait_constr = java_trait_constr + "\t\t\t\treturn result;\n" + else: + java_trait_constr = java_trait_constr + "\t\t\t\treturn ret;\n" + java_trait_constr = java_trait_constr + "\t\t\t}\n" + elif fn_line.group(3) == "free": + write_c("static void " + struct_name + "_JCalls_free(void* this_arg) {\n") + write_c("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n") + write_c("\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n") + write_c("\t\tJNIEnv *env;\n") + write_c("\t\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);\n") + write_c("\t\t(*env)->DeleteWeakGlobalRef(env, j_calls->o);\n") + write_c("\t\tFREE(j_calls);\n") + write_c("\t}\n}\n") + java_trait_constr = java_trait_constr + "\t\t}" + for var_line in field_var_lines: + if var_line.group(1) in trait_structs: + java_trait_constr = java_trait_constr + ", " + var_line.group(2) + ".new_impl(" + var_line.group(2) + "_impl).bindings_instance" + else: + java_trait_constr = java_trait_constr + ", " + var_line.group(2) + out_java_trait.write("\t}\n") + out_java_trait.write(java_trait_constr + ");\n\t\treturn impl_holder.held;\n\t}\n") + + # Write out a clone function whether we need one or not, as we use them in moving to rust + write_c("static void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n") + write_c("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n") + write_c("\tatomic_fetch_add_explicit(&j_calls->refcnt, 1, memory_order_release);\n") + for var_line in field_var_lines: + if var_line.group(1) in trait_structs: + write_c("\tatomic_fetch_add_explicit(&j_calls->" + var_line.group(2) + "->refcnt, 1, memory_order_release);\n") + write_c("\treturn (void*) this_arg;\n") + write_c("}\n") + + out_java.write("\t}\n") + + out_java.write("\tpublic static native long " + struct_name + "_new(" + struct_name + " impl") + write_c("static inline " + struct_name + " " + struct_name + "_init (JNIEnv * env, jclass _a, jobject o") + for idx, var_line in enumerate(field_var_lines): + if var_line.group(1) in trait_structs: + out_java.write(", " + var_line.group(1) + " " + var_line.group(2)) + write_c(", jobject " + var_line.group(2)) + else: + out_java.write(", " + field_var_convs[idx].java_ty + " " + var_line.group(2)) + write_c(", " + field_var_convs[idx].c_ty + " " + var_line.group(2)) + out_java.write(");\n") + write_c(") {\n") + + write_c("\tjclass c = (*env)->GetObjectClass(env, o);\n") + write_c("\tCHECK(c != NULL);\n") + write_c("\t" + struct_name + "_JCalls *calls = MALLOC(sizeof(" + struct_name + "_JCalls), \"" + struct_name + "_JCalls\");\n") + write_c("\tatomic_init(&calls->refcnt, 1);\n") + write_c("\tDO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);\n") + write_c("\tcalls->o = (*env)->NewWeakGlobalRef(env, o);\n") + for (fn_line, java_meth_descr) in java_meths: + if fn_line.group(3) != "free" and fn_line.group(3) != "clone": + write_c("\tcalls->" + fn_line.group(3) + "_meth = (*env)->GetMethodID(env, c, \"" + fn_line.group(3) + "\", \"" + java_meth_descr + "\");\n") + write_c("\tCHECK(calls->" + fn_line.group(3) + "_meth != NULL);\n") + for idx, var_line in enumerate(field_var_lines): + if field_var_convs[idx] is not None and field_var_convs[idx].arg_conv is not None: + write_c("\n\t" + field_var_convs[idx].arg_conv.replace("\n", "\n\t") +"\n") + write_c("\n\t" + struct_name + " ret = {\n") + write_c("\t\t.this_arg = (void*) calls,\n") + for fn_line in trait_fn_lines: + if fn_line.group(3) != "free" and fn_line.group(3) != "clone": + write_c("\t\t." + fn_line.group(3) + " = " + fn_line.group(3) + "_jcall,\n") + elif fn_line.group(3) == "free": + write_c("\t\t.free = " + struct_name + "_JCalls_free,\n") + else: + write_c("\t\t.clone = " + struct_name + "_JCalls_clone,\n") + for idx, var_line in enumerate(field_var_lines): + if var_line.group(1) in trait_structs: + write_c("\t\t." + var_line.group(2) + " = " + var_line.group(1) + "_init(env, _a, " + var_line.group(2) + "),\n") + elif field_var_convs[idx].arg_conv_name is not None: + write_c("\t\t." + var_line.group(2) + " = " + field_var_convs[idx].arg_conv_name + ",\n") + write_c("\t\t.set_" + var_line.group(2) + " = NULL,\n") + else: + write_c("\t\t." + var_line.group(2) + " = " + var_line.group(2) + ",\n") + write_c("\t\t.set_" + var_line.group(2) + " = NULL,\n") + write_c("\t};\n") + for var_line in field_var_lines: + if var_line.group(1) in trait_structs: + write_c("\tcalls->" + var_line.group(2) + " = ret." + var_line.group(2) + ".this_arg;\n") + write_c("\treturn ret;\n") + write_c("}\n") + + write_c("JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new (JNIEnv * env, jclass _a, jobject o") + for idx, var_line in enumerate(field_var_lines): + if var_line.group(1) in trait_structs: + write_c(", jobject " + var_line.group(2)) + else: + write_c(", " + field_var_convs[idx].c_ty + " " + var_line.group(2)) + write_c(") {\n") + write_c("\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n") + write_c("\t*res_ptr = " + struct_name + "_init(env, _a, o") + for var_line in field_var_lines: + write_c(", " + var_line.group(2)) + write_c(");\n") + write_c("\treturn (long)res_ptr;\n") + write_c("}\n") + + out_java.write("\tpublic static native " + struct_name + " " + struct_name + "_get_obj_from_jcalls(long val);\n") + write_c("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {\n") + write_c("\tjobject ret = (*env)->NewLocalRef(env, ((" + struct_name + "_JCalls*)val)->o);\n") + write_c("\tCHECK(ret != NULL);\n") + write_c("\treturn ret;\n") + write_c("}\n") + for fn_line in trait_fn_lines: - if fn_line.group(2) != "free" and fn_line.group(2) != "clone": - out_c.write("\t\t." + fn_line.group(2) + " = " + fn_line.group(2) + "_jcall,\n") - elif fn_line.group(2) == "free": - out_c.write("\t\t.free = " + struct_name + "_JCalls_free,\n") + # For now, just disable enabling the _call_log - we don't know how to inverse-map String + is_log = fn_line.group(3) == "log" and struct_name == "LDKLogger" + if fn_line.group(3) != "free" and fn_line.group(3) != "clone" and fn_line.group(3) != "eq" and not is_log: + dummy_line = fn_line.group(2) + struct_name.replace("LDK", "") + "_" + fn_line.group(3) + " " + struct_name + "* this_arg" + fn_line.group(5) + "\n" + map_fn(dummy_line, re.compile("([A-Za-z_0-9]*) *([A-Za-z_0-9]*) *(.*)").match(dummy_line), None, "(this_arg_conv->" + fn_line.group(3) + ")(this_arg_conv->this_arg") + for idx, var_line in enumerate(field_var_lines): + if var_line.group(1) not in trait_structs: + write_c(var_line.group(1) + " " + struct_name + "_set_get_" + var_line.group(2) + "(" + struct_name + "* this_arg) {\n") + write_c("\tif (this_arg->set_" + var_line.group(2) + " != NULL)\n") + write_c("\t\tthis_arg->set_" + var_line.group(2) + "(this_arg);\n") + write_c("\treturn this_arg->" + var_line.group(2) + ";\n") + write_c("}\n") + dummy_line = var_line.group(1) + " " + struct_name.replace("LDK", "") + "_get_" + var_line.group(2) + " " + struct_name + "* this_arg" + fn_line.group(5) + "\n" + map_fn(dummy_line, re.compile("([A-Za-z_0-9]*) *([A-Za-z_0-9]*) *(.*)").match(dummy_line), None, struct_name + "_set_get_" + var_line.group(2) + "(this_arg_conv") + + def map_result(struct_name, res_ty, err_ty): + result_types.add(struct_name) + human_ty = struct_name.replace("LDKCResult", "Result") + with open(sys.argv[3] + "/structs/" + human_ty + ".java", "w") as out_java_struct: + out_java_struct.write(hu_struct_file_prefix) + out_java_struct.write("public class " + human_ty + " extends CommonBase {\n") + out_java_struct.write("\tprivate " + human_ty + "(Object _dummy, long ptr) { super(ptr); }\n") + out_java_struct.write("\tprotected void finalize() throws Throwable {\n") + out_java_struct.write("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); } super.finalize();\n") + out_java_struct.write("\t}\n\n") + out_java_struct.write("\tstatic " + human_ty + " constr_from_ptr(long ptr) {\n") + out_java_struct.write("\t\tif (bindings." + struct_name + "_result_ok(ptr)) {\n") + out_java_struct.write("\t\t\treturn new " + human_ty + "_OK(null, ptr);\n") + out_java_struct.write("\t\t} else {\n") + out_java_struct.write("\t\t\treturn new " + human_ty + "_Err(null, ptr);\n") + out_java_struct.write("\t\t}\n") + out_java_struct.write("\t}\n") + + res_map = map_type(res_ty + " res", True, None, False, True) + err_map = map_type(err_ty + " err", True, None, False, True) + can_clone = True + if not res_map.is_native_primitive and (res_map.rust_obj.replace("LDK", "") + "_clone" not in clone_fns): + can_clone = False + if not err_map.is_native_primitive and (err_map.rust_obj.replace("LDK", "") + "_clone" not in clone_fns): + can_clone = False + + out_java.write("\tpublic static native boolean " + struct_name + "_result_ok(long arg);\n") + write_c("JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {\n") + write_c("\treturn ((" + struct_name + "*)arg)->result_ok;\n") + write_c("}\n") + + out_java.write("\tpublic static native " + res_map.java_ty + " " + struct_name + "_get_ok(long arg);\n") + write_c("JNIEXPORT " + res_map.c_ty + " JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1get_1ok (JNIEnv * _env, jclass _a, jlong arg) {\n") + write_c("\t" + struct_name + " *val = (" + struct_name + "*)arg;\n") + write_c("\tCHECK(val->result_ok);\n\t") + out_java_struct.write("\tpublic static final class " + human_ty + "_OK extends " + human_ty + " {\n") + if res_map.ret_conv is not None: + write_c(res_map.ret_conv[0].replace("\n", "\n\t") + "(*val->contents.result)") + write_c(res_map.ret_conv[1].replace("\n", "\n\t") + "\n\treturn " + res_map.ret_conv_name) else: - out_c.write("\t\t.clone = " + struct_name + "_JCalls_clone,\n") - for var_line in field_var_lines: - if var_line.group(1) in trait_structs: - out_c.write("\t\t." + var_line.group(2) + " = " + var_line.group(1) + "_init(env, _a, " + var_line.group(2) + "),\n") - out_c.write("\t};\n") - for var_line in field_var_lines: - if var_line.group(1) in trait_structs: - out_c.write("\tcalls->" + var_line.group(2) + " = ret." + var_line.group(2) + ".this_arg;\n") - out_c.write("\treturn ret;\n") - out_c.write("}\n") - - out_c.write("JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new (JNIEnv * env, jclass _a, jobject o") - for var_line in field_var_lines: - if var_line.group(1) in trait_structs: - out_c.write(", jobject " + var_line.group(2)) - out_c.write(") {\n") - out_c.write("\t" + struct_name + " *res_ptr = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n") - out_c.write("\t*res_ptr = " + struct_name + "_init(env, _a, o") - for var_line in field_var_lines: - if var_line.group(1) in trait_structs: - out_c.write(", " + var_line.group(2)) - out_c.write(");\n") - out_c.write("\treturn (long)res_ptr;\n") - out_c.write("}\n") + write_c("return *val->contents.result") + write_c(";\n}\n") + if res_map.java_hu_ty != "void": + out_java_struct.write("\t\tpublic final " + res_map.java_hu_ty + " res;\n") + out_java_struct.write("\t\tprivate " + human_ty + "_OK(Object _dummy, long ptr) {\n") + out_java_struct.write("\t\t\tsuper(_dummy, ptr);\n") + if res_map.java_hu_ty == "void": + pass + elif res_map.to_hu_conv is not None: + out_java_struct.write("\t\t\t" + res_map.java_ty + " res = bindings." + struct_name + "_get_ok(ptr);\n") + out_java_struct.write("\t\t\t" + res_map.to_hu_conv.replace("\n", "\n\t\t\t")) + out_java_struct.write("\n\t\t\tthis.res = " + res_map.to_hu_conv_name + ";\n") + else: + out_java_struct.write("\t\t\tthis.res = bindings." + struct_name + "_get_ok(ptr);\n") + out_java_struct.write("\t\t}\n") + if struct_name.startswith("LDKCResult_None"): + out_java_struct.write("\t\tpublic " + human_ty + "_OK() {\n\t\t\tthis(null, bindings.C" + human_ty + "_ok());\n") + else: + out_java_struct.write("\t\tpublic " + human_ty + "_OK(" + res_map.java_hu_ty + " res) {\n") + if res_map.from_hu_conv is not None: + out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_ok(" + res_map.from_hu_conv[0] + "));\n") + if res_map.from_hu_conv[1] != "": + out_java_struct.write("\t\t\t" + res_map.from_hu_conv[1] + ";\n") + else: + out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_ok(res));\n") + out_java_struct.write("\t\t}\n\t}\n\n") + out_java.write("\tpublic static native " + err_map.java_ty + " " + struct_name + "_get_err(long arg);\n") + write_c("JNIEXPORT " + err_map.c_ty + " JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1get_1err (JNIEnv * _env, jclass _a, jlong arg) {\n") + write_c("\t" + struct_name + " *val = (" + struct_name + "*)arg;\n") + write_c("\tCHECK(!val->result_ok);\n\t") + out_java_struct.write("\tpublic static final class " + human_ty + "_Err extends " + human_ty + " {\n") + if err_map.ret_conv is not None: + write_c(err_map.ret_conv[0].replace("\n", "\n\t") + "(*val->contents.err)") + write_c(err_map.ret_conv[1].replace("\n", "\n\t") + "\n\treturn " + err_map.ret_conv_name) + else: + write_c("return *val->contents.err") + write_c(";\n}\n") + + if err_map.java_hu_ty != "void": + out_java_struct.write("\t\tpublic final " + err_map.java_hu_ty + " err;\n") + out_java_struct.write("\t\tprivate " + human_ty + "_Err(Object _dummy, long ptr) {\n") + out_java_struct.write("\t\t\tsuper(_dummy, ptr);\n") + if err_map.java_hu_ty == "void": + pass + elif err_map.to_hu_conv is not None: + out_java_struct.write("\t\t\t" + err_map.java_ty + " err = bindings." + struct_name + "_get_err(ptr);\n") + out_java_struct.write("\t\t\t" + err_map.to_hu_conv.replace("\n", "\n\t\t\t")) + out_java_struct.write("\n\t\t\tthis.err = " + err_map.to_hu_conv_name + ";\n") + else: + out_java_struct.write("\t\t\tthis.err = bindings." + struct_name + "_get_err(ptr);\n") + out_java_struct.write("\t\t}\n") + + if struct_name.endswith("NoneZ"): + out_java_struct.write("\t\tpublic " + human_ty + "_Err() {\n\t\t\tthis(null, bindings.C" + human_ty + "_err());\n") + else: + out_java_struct.write("\t\tpublic " + human_ty + "_Err(" + err_map.java_hu_ty + " err) {\n") + if err_map.from_hu_conv is not None: + out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_err(" + err_map.from_hu_conv[0] + "));\n") + if err_map.from_hu_conv[1] != "": + out_java_struct.write("\t\t\t" + err_map.from_hu_conv[1] + ";\n") + else: + out_java_struct.write("\t\t\tthis(null, bindings.C" + human_ty + "_err(err));\n") + out_java_struct.write("\t\t}\n\t}\n}\n") + + if can_clone: + clone_fns.add(struct_name.replace("LDK", "") + "_clone") + write_c("static inline " + struct_name + " " + struct_name.replace("LDK", "") + "_clone(const " + struct_name + " *orig) {\n") + write_c("\t" + struct_name + " res = { .result_ok = orig->result_ok };\n") + write_c("\tif (orig->result_ok) {\n") + if res_map.c_ty == "void": + write_c("\t\tres.contents.result = NULL;\n") + else: + if res_map.is_native_primitive: + write_c("\t\t" + res_map.c_ty + "* contents = MALLOC(sizeof(" + res_map.c_ty + "), \"" + res_map.c_ty + " result OK clone\");\n") + write_c("\t\t*contents = *orig->contents.result;\n") + else: + write_c("\t\t" + res_map.rust_obj + "* contents = MALLOC(sizeof(" + res_map.rust_obj + "), \"" + res_map.rust_obj + " result OK clone\");\n") + write_c("\t\t*contents = " + res_map.rust_obj.replace("LDK", "") + "_clone(orig->contents.result);\n") + write_c("\t\tres.contents.result = contents;\n") + write_c("\t} else {\n") + if err_map.c_ty == "void": + write_c("\t\tres.contents.err = NULL;\n") + else: + if err_map.is_native_primitive: + write_c("\t\t" + err_map.c_ty + "* contents = MALLOC(sizeof(" + err_map.c_ty + "), \"" + err_map.c_ty + " result Err clone\");\n") + write_c("\t\t*contents = *orig->contents.err;\n") + else: + write_c("\t\t" + err_map.rust_obj + "* contents = MALLOC(sizeof(" + err_map.rust_obj + "), \"" + err_map.rust_obj + " result Err clone\");\n") + write_c("\t\t*contents = " + err_map.rust_obj.replace("LDK", "") + "_clone(orig->contents.err);\n") + write_c("\t\tres.contents.err = contents;\n") + write_c("\t}\n\treturn res;\n}\n") + + def map_tuple(struct_name, field_lines): + out_java.write("\tpublic static native long " + struct_name + "_new(") + write_c("JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new(JNIEnv *_env, jclass _b") + ty_list = [] + for idx, line in enumerate(field_lines): + if idx != 0 and idx < len(field_lines) - 2: + ty_info = java_c_types(line.strip(';'), None) + if idx != 1: + out_java.write(", ") + e = chr(ord('a') + idx - 1) + out_java.write(ty_info.java_ty + " " + e) + write_c(", " + ty_info.c_ty + " " + e) + ty_list.append(ty_info) + tuple_types[struct_name] = (ty_list, struct_name) + out_java.write(");\n") + write_c(") {\n") + write_c("\t" + struct_name + "* ret = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n") + can_clone = True + clone_str = "static inline " + struct_name + " " + struct_name.replace("LDK", "") + "_clone(const " + struct_name + " *orig) {\n" + clone_str = clone_str + "\t" + struct_name + " ret = {\n" + for idx, line in enumerate(field_lines): + if idx != 0 and idx < len(field_lines) - 2: + ty_info = map_type(line.strip(';'), False, None, False, False) + e = chr(ord('a') + idx - 1) + if ty_info.arg_conv is not None: + write_c("\t" + ty_info.arg_conv.replace("\n", "\n\t")) + write_c("\n\tret->" + e + " = " + ty_info.arg_conv_name + ";\n") + else: + write_c("\tret->" + e + " = " + e + ";\n") + if ty_info.arg_conv_cleanup is not None: + write_c("\t//TODO: Really need to call " + ty_info.arg_conv_cleanup + " here\n") + if not ty_info.is_native_primitive and (ty_info.rust_obj.replace("LDK", "") + "_clone") not in clone_fns: + can_clone = False + elif can_clone and ty_info.is_native_primitive: + clone_str = clone_str + "\t\t." + chr(ord('a') + idx - 1) + " = orig->" + chr(ord('a') + idx - 1) + ",\n" + elif can_clone: + clone_str = clone_str + "\t\t." + chr(ord('a') + idx - 1) + " = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&orig->" + chr(ord('a') + idx - 1) + "),\n" + write_c("\treturn (long)ret;\n") + write_c("}\n") + + if can_clone: + clone_fns.add(struct_name.replace("LDK", "") + "_clone") + write_c(clone_str) + write_c("\t};\n\treturn ret;\n}\n") + + for idx, ty_info in enumerate(ty_list): + e = chr(ord('a') + idx) + out_java.write("\tpublic static native " + ty_info.java_ty + " " + struct_name + "_get_" + e + "(long ptr);\n") + write_c("JNIEXPORT " + ty_info.c_ty + " JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1get_1" + e + "(JNIEnv *_env, jclass _b, jlong ptr) {\n") + write_c("\t" + struct_name + " *tuple = (" + struct_name + "*)ptr;\n") + conv_info = map_type_with_info(ty_info, False, None, False, True) + if conv_info.ret_conv is not None: + write_c("\t" + conv_info.ret_conv[0].replace("\n", "\n\t") + "tuple->" + e + conv_info.ret_conv[1].replace("\n", "\n\t") + "\n") + write_c("\treturn " + conv_info.ret_conv_name + ";\n") + else: + write_c("\treturn tuple->" + e + ";\n") + write_c("}\n") out_java.write("""package org.ldk.impl; +import org.ldk.enums.*; public class bindings { - static native void init(java.lang.Class c); + public static class VecOrSliceDef { + public long dataptr; + public long datalen; + public long stride; + public VecOrSliceDef(long dataptr, long datalen, long stride) { + this.dataptr = dataptr; this.datalen = datalen; this.stride = stride; + } + } static { System.loadLibrary(\"lightningjni\"); - init(java.lang.Enum.class); + init(java.lang.Enum.class, VecOrSliceDef.class); + init_class_cache(); } + static native void init(java.lang.Class c, java.lang.Class slicedef); + static native void init_class_cache(); + + public static native boolean deref_bool(long ptr); + public static native long deref_long(long ptr); + public static native void free_heap_ptr(long ptr); + public static native byte[] read_bytes(long ptr, long len); + public static native byte[] get_u8_slice_bytes(long slice_ptr); + public static native long bytes_to_u8_vec(byte[] bytes); + public static native long new_txpointer_copy_data(byte[] txdata); + public static native void txpointer_free(long ptr); + public static native byte[] txpointer_get_buffer(long ptr); + public static native long vec_slice_len(long vec); + public static native long new_empty_slice_vec(); """) - out_c.write("#include \"org_ldk_impl_bindings.h\"\n") - out_c.write("#include \n") - out_c.write("#include \n") - out_c.write("#include \n") - out_c.write("#include \n") - out_c.write("#include \n\n") - - out_c.write("jmethodID ordinal_meth = NULL;\n") - out_c.write("JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class) {\n") - out_c.write("\tordinal_meth = (*env)->GetMethodID(env, enum_class, \"ordinal\", \"()I\");\n") - out_c.write("\tassert(ordinal_meth != NULL);\n") - out_c.write("}\n\n") - - if sys.argv[4] == "false": - out_c.write("#define MALLOC(a, _) malloc(a)\n") - out_c.write("#define FREE free\n\n") - else: - out_c.write("#include \n") - out_c.write("static mtx_t allocation_mtx;\n\n") - out_c.write("void __attribute__((constructor)) init_mtx() {\n") - out_c.write("\tassert(mtx_init(&allocation_mtx, mtx_plain) == thrd_success);\n") - out_c.write("}\n\n") - out_c.write("typedef struct allocation {\n") - out_c.write("\tstruct allocation* next;\n") - out_c.write("\tvoid* ptr;\n") - out_c.write("\tconst char* struct_name;\n") - out_c.write("} allocation;\n") - out_c.write("static allocation* allocation_ll = NULL;\n\n") - out_c.write("void* MALLOC(size_t len, const char* struct_name) {\n") - out_c.write("\tvoid* res = malloc(len);\n") - out_c.write("\tallocation* new_alloc = malloc(sizeof(allocation));\n") - out_c.write("\tnew_alloc->ptr = res;\n") - out_c.write("\tnew_alloc->struct_name = struct_name;\n") - out_c.write("\tassert(mtx_lock(&allocation_mtx) == thrd_success);\n") - out_c.write("\tnew_alloc->next = allocation_ll;\n") - out_c.write("\tallocation_ll = new_alloc;\n") - out_c.write("\tassert(mtx_unlock(&allocation_mtx) == thrd_success);\n") - out_c.write("\treturn res;\n") - out_c.write("}\n\n") - out_c.write("void FREE(void* ptr) {\n") - out_c.write("\tallocation* p = NULL;\n") - out_c.write("\tassert(mtx_lock(&allocation_mtx) == thrd_success);\n") - out_c.write("\tallocation* it = allocation_ll;\n") - out_c.write("\twhile (it->ptr != ptr) { p = it; it = it->next; }\n") - out_c.write("\tif (p) { p->next = it->next; } else { allocation_ll = it->next; }\n") - out_c.write("\tassert(mtx_unlock(&allocation_mtx) == thrd_success);\n") - out_c.write("\tassert(it->ptr == ptr);\n") - out_c.write("\tfree(it);\n") - out_c.write("\tfree(ptr);\n") - out_c.write("}\n\n") - out_c.write("void __attribute__((destructor)) check_leaks() {\n") - out_c.write("\tfor (allocation* a = allocation_ll; a != NULL; a = a->next) { fprintf(stderr, \"%s %p remains\\n\", a->struct_name, a->ptr); }\n") - out_c.write("\tassert(allocation_ll == NULL);\n") - out_c.write("}\n\n") - - # XXX: Temporarily write out a manual SecretKey_new() for testing, we should auto-gen this kind of thing - out_java.write("\tpublic static native long LDKSecretKey_new();\n\n") # TODO: rm me - out_c.write("JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_LDKSecretKey_1new(JNIEnv * _env, jclass _b) {\n") # TODO: rm me - out_c.write("\tLDKSecretKey* key = (LDKSecretKey*)MALLOC(sizeof(LDKSecretKey), \"LDKSecretKey\");\n") # TODO: rm me - out_c.write("\treturn (long)key;\n") # TODO: rm me - out_c.write("}\n") # TODO: rm me + write_c(""" +static jmethodID ordinal_meth = NULL; +static jmethodID slicedef_meth = NULL; +static jclass slicedef_cls = NULL; +JNIEXPORT void Java_org_ldk_impl_bindings_init(JNIEnv * env, jclass _b, jclass enum_class, jclass slicedef_class) { + ordinal_meth = (*env)->GetMethodID(env, enum_class, "ordinal", "()I"); + CHECK(ordinal_meth != NULL); + slicedef_meth = (*env)->GetMethodID(env, slicedef_class, "", "(JJJ)V"); + CHECK(slicedef_meth != NULL); + slicedef_cls = (*env)->NewGlobalRef(env, slicedef_class); + CHECK(slicedef_cls != NULL); +} + +JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_deref_1bool (JNIEnv * env, jclass _a, jlong ptr) { + return *((bool*)ptr); +} +JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_deref_1long (JNIEnv * env, jclass _a, jlong ptr) { + return *((long*)ptr); +} +JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_free_1heap_1ptr (JNIEnv * env, jclass _a, jlong ptr) { + FREE((void*)ptr); +} +JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_read_1bytes (JNIEnv * _env, jclass _b, jlong ptr, jlong len) { + jbyteArray ret_arr = (*_env)->NewByteArray(_env, len); + (*_env)->SetByteArrayRegion(_env, ret_arr, 0, len, (unsigned char*)ptr); + return ret_arr; +} +JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes (JNIEnv * _env, jclass _b, jlong slice_ptr) { + LDKu8slice *slice = (LDKu8slice*)slice_ptr; + jbyteArray ret_arr = (*_env)->NewByteArray(_env, slice->datalen); + (*_env)->SetByteArrayRegion(_env, ret_arr, 0, slice->datalen, slice->data); + return ret_arr; +} +JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_bytes_1to_1u8_1vec (JNIEnv * _env, jclass _b, jbyteArray bytes) { + LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "LDKCVec_u8"); + vec->datalen = (*_env)->GetArrayLength(_env, bytes); + vec->data = (uint8_t*)MALLOC(vec->datalen, "LDKCVec_u8Z Bytes"); + (*_env)->GetByteArrayRegion (_env, bytes, 0, vec->datalen, vec->data); + return (long)vec; +} +JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_txpointer_1get_1buffer (JNIEnv * env, jclass _b, jlong ptr) { + LDKTransaction *txdata = (LDKTransaction*)ptr; + LDKu8slice slice; + slice.data = txdata->data; + slice.datalen = txdata->datalen; + return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (long)&slice); +} +JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data (JNIEnv * env, jclass _b, jbyteArray bytes) { + LDKTransaction *txdata = (LDKTransaction*)MALLOC(sizeof(LDKTransaction), "LDKTransaction"); + txdata->datalen = (*env)->GetArrayLength(env, bytes); + txdata->data = (uint8_t*)MALLOC(txdata->datalen, "Tx Data Bytes"); + txdata->data_is_owned = false; + (*env)->GetByteArrayRegion (env, bytes, 0, txdata->datalen, txdata->data); + return (long)txdata; +} +JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_txpointer_1free (JNIEnv * env, jclass _b, jlong ptr) { + LDKTransaction *tx = (LDKTransaction*)ptr; + tx->data_is_owned = true; + Transaction_free(*tx); + FREE((void*)ptr); +} +JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_vec_1slice_1len (JNIEnv * env, jclass _a, jlong ptr) { + // Check offsets of a few Vec types are all consistent as we're meant to be generic across types + _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_SignatureZ, datalen), "Vec<*> needs to be mapped identically"); + _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_MessageSendEventZ, datalen), "Vec<*> needs to be mapped identically"); + _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_EventZ, datalen), "Vec<*> needs to be mapped identically"); + _Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKCVec_C2Tuple_usizeTransactionZZ, datalen), "Vec<*> needs to be mapped identically"); + LDKCVec_u8Z *vec = (LDKCVec_u8Z*)ptr; + return (long)vec->datalen; +} +JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_new_1empty_1slice_1vec (JNIEnv * _env, jclass _b) { + // Check sizes of a few Vec types are all consistent as we're meant to be generic across types + _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_SignatureZ), "Vec<*> needs to be mapped identically"); + _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_MessageSendEventZ), "Vec<*> needs to be mapped identically"); + _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_EventZ), "Vec<*> needs to be mapped identically"); + _Static_assert(sizeof(LDKCVec_u8Z) == sizeof(LDKCVec_C2Tuple_usizeTransactionZZ), "Vec<*> needs to be mapped identically"); + LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "Empty LDKCVec"); + vec->data = NULL; + vec->datalen = 0; + return (long)vec; +} + +// 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"); + +""") + + with open(sys.argv[3] + "/structs/CommonBase.java", "a") as out_java_struct: + out_java_struct.write("""package org.ldk.structs; +import java.util.LinkedList; +class CommonBase { + long ptr; + LinkedList ptrs_to = new LinkedList(); + protected CommonBase(long ptr) { this.ptr = ptr; } + public long _test_only_get_ptr() { return this.ptr; } +} +""") in_block_comment = False cur_block_obj = None - fn_ptr_regex = re.compile("^extern const ([A-Za-z_0-9\* ]*) \(\*(.*)\)\((.*)\);$") - fn_ret_arr_regex = re.compile("(.*) \(\*(.*)\((.*)\)\)\[([0-9]*)\];$") - reg_fn_regex = re.compile("([A-Za-z_0-9\* ]* \*?)([a-zA-Z_0-9]*)\((.*)\);$") const_val_regex = re.compile("^extern const ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$") - line_indicates_opaque_regex = re.compile("^ bool _underlying_ref;$") - line_indicates_trait_regex = re.compile("^ ([A-Za-z_0-9]* \*?)\(\*([A-Za-z_0-9]*)\)\((const )?void \*this_arg(.*)\);$") + line_indicates_result_regex = re.compile("^ union (LDKCResult_[A-Za-z_0-9]*Ptr) contents;$") + line_indicates_vec_regex = re.compile("^ (struct |enum |union )?([A-Za-z_0-9]*) \*data;$") + line_indicates_opaque_regex = re.compile("^ bool is_owned;$") + line_indicates_trait_regex = re.compile("^ (struct |enum |union )?([A-Za-z_0-9]* \*?)\(\*([A-Za-z_0-9]*)\)\((const )?void \*this_arg(.*)\);$") assert(line_indicates_trait_regex.match(" uintptr_t (*send_data)(void *this_arg, LDKu8slice data, bool resume_read);")) - assert(line_indicates_trait_regex.match(" LDKCVec_MessageSendEventZ (*get_and_clear_pending_msg_events)(const void *this_arg);")) + assert(line_indicates_trait_regex.match(" struct LDKCVec_MessageSendEventZ (*get_and_clear_pending_msg_events)(const void *this_arg);")) assert(line_indicates_trait_regex.match(" void *(*clone)(const void *this_arg);")) - line_field_var_regex = re.compile("^ ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$") - assert(line_field_var_regex.match(" LDKMessageSendEventsProvider MessageSendEventsProvider;")) + assert(line_indicates_trait_regex.match(" struct LDKCVec_u8Z (*write)(const void *this_arg);")) + line_field_var_regex = re.compile("^ struct ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$") + assert(line_field_var_regex.match(" struct LDKMessageSendEventsProvider MessageSendEventsProvider;")) + assert(line_field_var_regex.match(" struct LDKChannelPublicKeys pubkeys;")) struct_name_regex = re.compile("^typedef (struct|enum|union) (MUST_USE_STRUCT )?(LDK[A-Za-z_0-9]*) {$") - assert(struct_name_regex.match("typedef struct LDKCVecTempl_u8 {")) + assert(struct_name_regex.match("typedef struct LDKCVec_u8Z {")) assert(struct_name_regex.match("typedef enum LDKNetwork {")) + union_enum_items = {} + result_ptr_struct_items = {} for line in in_h: if in_block_comment: - #out_java.write("\t" + line) if line.endswith("*/\n"): in_block_comment = False elif cur_block_obj is not None: @@ -543,11 +1842,14 @@ public class bindings { if line.startswith("} "): field_lines = [] struct_name = None + vec_ty = None obj_lines = cur_block_obj.split("\n") is_opaque = False + result_contents = None is_unitary_enum = False is_union_enum = False is_union = False + is_tuple = False trait_fn_lines = [] field_var_lines = [] @@ -570,6 +1872,14 @@ public class bindings { is_union = True if line_indicates_opaque_regex.match(struct_line): is_opaque = True + result_match = line_indicates_result_regex.match(struct_line) + if result_match is not None: + result_contents = result_match.group(1) + vec_ty_match = line_indicates_vec_regex.match(struct_line) + if vec_ty_match is not None and struct_name.startswith("LDKCVec_"): + vec_ty = vec_ty_match.group(2) + elif struct_name.startswith("LDKC2Tuple_") or struct_name.startswith("LDKC3Tuple_"): + is_tuple = True trait_fn_match = line_indicates_trait_regex.match(struct_line) if trait_fn_match is not None: trait_fn_lines.append(trait_fn_match) @@ -579,56 +1889,129 @@ public class bindings { field_lines.append(struct_line) assert(struct_name is not None) - assert(len(trait_fn_lines) == 0 or not (is_opaque or is_unitary_enum or is_union_enum or is_union)) - assert(not is_opaque or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_union)) - assert(not is_unitary_enum or not (len(trait_fn_lines) != 0 or is_opaque or is_union_enum or is_union)) - assert(not is_union_enum or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_opaque or is_union)) - assert(not is_union or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_opaque)) + assert(len(trait_fn_lines) == 0 or not (is_opaque or is_unitary_enum or is_union_enum or is_union or result_contents is not None or vec_ty is not None)) + assert(not is_opaque or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_union or result_contents is not None or vec_ty is not None)) + assert(not is_unitary_enum or not (len(trait_fn_lines) != 0 or is_opaque or is_union_enum or is_union or result_contents is not None or vec_ty is not None)) + assert(not is_union_enum or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_opaque or is_union or result_contents is not None or vec_ty is not None)) + assert(not is_union or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_opaque or result_contents is not None or vec_ty is not None)) + assert(result_contents is None or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_opaque or is_union or vec_ty is not None)) + assert(vec_ty is None or not (len(trait_fn_lines) != 0 or is_unitary_enum or is_union_enum or is_opaque or is_union or result_contents is not None)) + if is_opaque: opaque_structs.add(struct_name) - elif is_unitary_enum: - unitary_enums.add(struct_name) - out_c.write("static inline " + struct_name + " " + struct_name + "_from_java(JNIEnv *env, jclass val) {\n") - out_c.write("\tswitch ((*env)->CallIntMethod(env, val, ordinal_meth)) {\n") - ord_v = 0 - for idx, struct_line in enumerate(field_lines): - if idx == 0: - out_java.write("\tpublic enum " + struct_name + " {\n") - elif idx == len(field_lines) - 3: - assert(struct_line.endswith("_Sentinel,")) - elif idx == len(field_lines) - 2: - out_java.write("\t}\n") - elif idx == len(field_lines) - 1: - assert(struct_line == "") + with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "w") as out_java_struct: + out_java_struct.write(hu_struct_file_prefix) + out_java_struct.write("public class " + struct_name.replace("LDK","") + " extends CommonBase") + if struct_name.startswith("LDKLocked"): + out_java_struct.write(" implements AutoCloseable") + out_java_struct.write(" {\n") + out_java_struct.write("\t" + struct_name.replace("LDK", "") + "(Object _dummy, long ptr) { super(ptr); }\n") + if struct_name.startswith("LDKLocked"): + out_java_struct.write("\t@Override public void close() {\n") else: - out_java.write("\t" + struct_line + "\n") - out_c.write("\t\tcase %d: return %s;\n" % (ord_v, struct_line.strip().strip(","))) - ord_v = ord_v + 1 - out_c.write("\t}\n") - out_c.write("\tassert(false);\n") - out_c.write("}\n") - - ord_v = 0 - out_c.write("static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\n") - out_c.write("\t// TODO: This is pretty inefficient, we really need to cache the field IDs and class\n") - out_c.write("\tjclass enum_class = (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + struct_name + ";\");\n") - out_c.write("\tassert(enum_class != NULL);\n") - out_c.write("\tswitch (val) {\n") - for idx, struct_line in enumerate(field_lines): - if idx > 0 and idx < len(field_lines) - 3: - variant = struct_line.strip().strip(",") - out_c.write("\t\tcase " + variant + ": {\n") - out_c.write("\t\t\tjfieldID field = (*env)->GetStaticFieldID(env, enum_class, \"" + variant + "\", \"Lorg/ldk/impl/bindings$" + struct_name + ";\");\n") - out_c.write("\t\t\tassert(field != NULL);\n") - out_c.write("\t\t\treturn (*env)->GetStaticObjectField(env, enum_class, field);\n") - out_c.write("\t\t}\n") - ord_v = ord_v + 1 - out_c.write("\t\tdefault: assert(false);\n") - out_c.write("\t}\n") - out_c.write("}\n\n") + out_java_struct.write("\t@Override @SuppressWarnings(\"deprecation\")\n") + out_java_struct.write("\tprotected void finalize() throws Throwable {\n") + out_java_struct.write("\t\tsuper.finalize();\n") + out_java_struct.write("\t\tif (ptr != 0) { bindings." + struct_name.replace("LDK","") + "_free(ptr); }\n") + out_java_struct.write("\t}\n\n") + elif result_contents is not None: + assert result_contents in result_ptr_struct_items + res_ty, err_ty = result_ptr_struct_items[result_contents] + map_result(struct_name, res_ty, err_ty) + elif struct_name.startswith("LDKCResult_") and struct_name.endswith("ZPtr"): + for line in field_lines: + if line.endswith("*result;"): + res_ty = line[:-8].strip() + elif line.endswith("*err;"): + err_ty = line[:-5].strip() + result_ptr_struct_items[struct_name] = (res_ty, err_ty) + result_types.add(struct_name[:-3]) + elif is_tuple: + map_tuple(struct_name, field_lines) + elif vec_ty is not None: + if vec_ty in opaque_structs: + out_java.write("\tpublic static native long[] " + struct_name + "_arr_info(long vec_ptr);\n") + write_c("JNIEXPORT jlongArray JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {\n") + else: + out_java.write("\tpublic static native VecOrSliceDef " + struct_name + "_arr_info(long vec_ptr);\n") + write_c("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {\n") + write_c("\t" + struct_name + " *vec = (" + struct_name + "*)ptr;\n") + if vec_ty in opaque_structs: + write_c("\tjlongArray ret = (*env)->NewLongArray(env, vec->datalen);\n") + write_c("\tjlong *ret_elems = (*env)->GetPrimitiveArrayCritical(env, ret, NULL);\n") + write_c("\tfor (size_t i = 0; i < vec->datalen; i++) {\n") + write_c("\t\tCHECK((((long)vec->data[i].inner) & 1) == 0);\n") + write_c("\t\tret_elems[i] = (long)vec->data[i].inner | (vec->data[i].is_owned ? 1 : 0);\n") + write_c("\t}\n") + write_c("\t(*env)->ReleasePrimitiveArrayCritical(env, ret, ret_elems, 0);\n") + write_c("\treturn ret;\n") + else: + write_c("\treturn (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(" + vec_ty + "));\n") + write_c("}\n") + + ty_info = map_type(vec_ty + " arr_elem", False, None, False, False) + if len(ty_info.java_fn_ty_arg) == 1: # ie we're a primitive of some form + out_java.write("\tpublic static native long " + struct_name + "_new(" + ty_info.java_ty + "[] elems);\n") + write_c("JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new(JNIEnv *env, jclass _b, j" + ty_info.java_ty + "Array elems){\n") + write_c("\t" + struct_name + " *ret = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n") + write_c("\tret->datalen = (*env)->GetArrayLength(env, elems);\n") + write_c("\tif (ret->datalen == 0) {\n") + write_c("\t\tret->data = NULL;\n") + write_c("\t} else {\n") + write_c("\t\tret->data = MALLOC(sizeof(" + vec_ty + ") * ret->datalen, \"" + struct_name + " Data\");\n") + write_c("\t\t" + ty_info.c_ty + " *java_elems = (*env)->GetPrimitiveArrayCritical(env, elems, NULL);\n") + write_c("\t\tfor (size_t i = 0; i < ret->datalen; i++) {\n") + if ty_info.arg_conv is not None: + write_c("\t\t\t" + ty_info.c_ty + " arr_elem = java_elems[i];\n") + write_c("\t\t\t" + ty_info.arg_conv.replace("\n", "\n\t\t\t") + "\n") + write_c("\t\t\tret->data[i] = " + ty_info.arg_conv_name + ";\n") + assert ty_info.arg_conv_cleanup is None + else: + write_c("\t\t\tret->data[i] = java_elems[i];\n") + write_c("\t\t}\n") + write_c("\t\t(*env)->ReleasePrimitiveArrayCritical(env, elems, java_elems, 0);\n") + write_c("\t}\n") + write_c("\treturn (long)ret;\n") + write_c("}\n") + + if ty_info.is_native_primitive: + clone_fns.add(struct_name.replace("LDK", "") + "_clone") + write_c("static inline " + struct_name + " " + struct_name.replace("LDK", "") + "_clone(const " + struct_name + " *orig) {\n") + write_c("\t" + struct_name + " ret = { .data = MALLOC(sizeof(" + ty_info.c_ty + ") * orig->datalen, \"" + struct_name + " clone bytes\"), .datalen = orig->datalen };\n") + write_c("\tmemcpy(ret.data, orig->data, sizeof(" + ty_info.c_ty + ") * ret.datalen);\n") + write_c("\treturn ret;\n}\n") + elif (ty_info.rust_obj.replace("LDK", "") + "_clone") in clone_fns: + ty_name = "CVec_" + ty_info.rust_obj.replace("LDK", "") + "Z"; + clone_fns.add(ty_name + "_clone") + write_c("static inline " + struct_name + " " + ty_name + "_clone(const " + struct_name + " *orig) {\n") + write_c("\t" + struct_name + " ret = { .data = MALLOC(sizeof(" + ty_info.rust_obj + ") * orig->datalen, \"" + struct_name + " clone bytes\"), .datalen = orig->datalen };\n") + write_c("\tfor (size_t i = 0; i < ret.datalen; i++) {\n") + write_c("\t\tret.data[i] = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&orig->data[i]);\n") + write_c("\t}\n\treturn ret;\n}\n") + elif is_union_enum: + assert(struct_name.endswith("_Tag")) + struct_name = struct_name[:-4] + union_enum_items[struct_name] = {"field_lines": field_lines} + elif struct_name.endswith("_Body") and struct_name.split("_")[0] in union_enum_items: + enum_var_name = struct_name.split("_") + union_enum_items[enum_var_name[0]][enum_var_name[1]] = field_lines + elif struct_name in union_enum_items: + map_complex_enum(struct_name, union_enum_items[struct_name]) + elif is_unitary_enum: + map_unitary_enum(struct_name, field_lines) elif len(trait_fn_lines) > 0: trait_structs.add(struct_name) map_trait(struct_name, field_var_lines, trait_fn_lines) + elif struct_name == "LDKTxOut": + with open(sys.argv[3] + "/structs/TxOut.java", "w") as out_java_struct: + out_java_struct.write(hu_struct_file_prefix) + out_java_struct.write("public class TxOut extends CommonBase{\n") + out_java_struct.write("\tTxOut(java.lang.Object _dummy, long ptr) { super(ptr); }\n") + out_java_struct.write("\tlong to_c_ptr() { return 0; }\n") + # TODO: TxOut body + out_java_struct.write("}") + else: + pass # Everything remaining is a byte[] or some form cur_block_obj = None else: fn_ptr = fn_ptr_regex.match(line) @@ -648,14 +2031,12 @@ public class bindings { cur_block_obj = line elif line.startswith("typedef union "): cur_block_obj = line - elif line.startswith("typedef "): - pass elif fn_ptr is not None: - map_fn(fn_ptr, None) + map_fn(line, fn_ptr, None, None) elif fn_ret_arr is not None: - map_fn(fn_ret_arr, fn_ret_arr.group(4)) + map_fn(line, fn_ret_arr, fn_ret_arr.group(4), None) elif reg_fn is not None: - map_fn(reg_fn, None) + map_fn(line, reg_fn, None, None) elif const_val_regex is not None: # TODO Map const variables pass @@ -663,3 +2044,22 @@ public class bindings { assert(line == "\n") out_java.write("}\n") + for struct_name in opaque_structs: + with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "a") as out_java_struct: + out_java_struct.write("}\n") + for struct_name in trait_structs: + with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "a") as out_java_struct: + out_java_struct.write("}\n") +with open(sys.argv[4], "w") as out_c: + out_c.write(c_file_pfx) + for ty in c_array_class_caches: + if ty + "_clz" in c_file: + out_c.write("static jclass " + ty + "_clz = NULL;\n") + out_c.write("JNIEXPORT void Java_org_ldk_impl_bindings_init_1class_1cache(JNIEnv * env, jclass _b) {\n") + for ty in c_array_class_caches: + if ty + "_clz" in c_file: + out_c.write("\t" + ty + "_clz = (*env)->FindClass(env, \"" + ty.replace("arr_of_", "[") + "\");\n") + out_c.write("\tCHECK(" + ty + "_clz != NULL);\n") + out_c.write("\t" + ty + "_clz = (*env)->NewGlobalRef(env, " + ty + "_clz);\n") + out_c.write("}\n") + out_c.write(c_file)