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genbindings.py
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#!/usr/bin/env python3
import os, sys, re, subprocess
if len(sys.argv) < 8:
print("USAGE: /path/to/lightning.h /path/to/bindings/output /path/to/bindings/ /path/to/bindings/output.c debug lang target-tuple")
sys.exit(1)
if sys.argv[5] == "false":
DEBUG = False
elif sys.argv[5] == "true":
DEBUG = True
else:
print("debug should be true or false and indicates whether to track allocations and ensure we don't leak")
sys.exit(1)
target = None
if sys.argv[6] == "java" or sys.argv[6] == "android":
import java_strings
from java_strings import Consts
target = java_strings.Target.JAVA
if sys.argv[6] == "android":
target = java_strings.Target.ANDROID
if "apple" in sys.argv[8]:
target = java_strings.Target.MACOS
elif sys.argv[6] == "typescript":
import typescript_strings
from typescript_strings import Consts
target = typescript_strings.Target.NODEJS
if len(sys.argv) == 8 and sys.argv[7] == 'browser':
target = typescript_strings.Target.BROWSER
elif sys.argv[6].startswith("c_sharp"):
import csharp_strings
from csharp_strings import Consts
if sys.argv[6] == "c_sharp-win":
target = csharp_strings.Target.WINDOWS
elif sys.argv[6] == "c_sharp-darwin":
target = csharp_strings.Target.PTHREAD
elif sys.argv[6] == "c_sharp-linux":
target = csharp_strings.Target.LINUX
else:
assert False
elif sys.argv[6] == "python":
import python_strings
from python_strings import Consts
target = python_strings.Target.PYTHON
else:
print("Only java, typescript, python, or c_sharp can be set for lang")
sys.exit(1)
consts = Consts(DEBUG, target=target, outdir=sys.argv[4])
local_git_version = os.getenv("LDK_GARBAGECOLLECTED_GIT_OVERRIDE")
if local_git_version is None:
local_git_version = subprocess.check_output(["git", "describe", '--tag', '--dirty']).decode("utf-8").strip()
from bindingstypes import *
c_file = ""
def write_c(s):
global c_file
c_file += s
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("_")
def doc_to_field_nullable(doc):
if doc is None:
return False
for line in doc.splitlines():
if "Note that this (or a relevant inner pointer) may be NULL or all-0s to represent None" in line:
return True
return False
def doc_to_params_ret_nullable(doc):
if doc is None:
return (set(), False)
params = set()
ret_null = False
for line in doc.splitlines():
if "may be NULL or all-0s to represent None" not in line:
continue
if "Note that the return value" in line:
ret_null = True
elif "Note that " in line:
param = line.split("Note that ")[1].split(" ")[0]
params.add(param)
return (params, ret_null)
unitary_enums = set()
# Map from enum name to "contains trait object"
complex_enums = {}
opaque_structs = set()
trait_structs = {}
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:]
nonnull_ptr = "NONNULL_PTR" in fn_arg
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("LDKThirtyTwoU16s"):
fn_arg = "uint16_t (*" + fn_arg[17:] + ")[32]"
assert var_is_arr_regex.match(fn_arg[9:])
rust_obj = "LDKThirtyTwoU16s"
arr_access = "data"
elif fn_arg.startswith("LDKU128"):
if fn_arg == "LDKU128":
fn_arg = "LDKU128 arg"
if fn_arg.startswith("LDKU128*") or fn_arg.startswith("LDKU128 *"):
fn_arg = "uint8_t (" + fn_arg[8:] + ")[16]"
else:
fn_arg = "uint8_t (*" + fn_arg[8:] + ")[16]"
assert var_is_arr_regex.match(fn_arg[8:])
rust_obj = "LDKU128"
arr_access = "le_bytes"
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("LDKTweakedPublicKey"):
fn_arg = "uint8_t (*" + fn_arg[21:] + ")[32]"
assert var_is_arr_regex.match(fn_arg[8:])
rust_obj = "LDKTweakedPublicKey"
arr_access = "x_coordinate"
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("LDKECDSASignature"):
fn_arg = "uint8_t (*" + fn_arg[18:] + ")[64]"
assert var_is_arr_regex.match(fn_arg[8:])
rust_obj = "LDKECDSASignature"
arr_access = "compact_form"
elif fn_arg.startswith("LDKSchnorrSignature"):
fn_arg = "uint8_t (*" + fn_arg[20:] + ")[64]"
assert var_is_arr_regex.match(fn_arg[8:])
rust_obj = "LDKSchnorrSignature"
arr_access = "compact_form"
elif fn_arg.startswith("LDKRecoverableSignature"):
fn_arg = "uint8_t (*" + fn_arg[24:] + ")[68]"
assert var_is_arr_regex.match(fn_arg[8:])
rust_obj = "LDKRecoverableSignature"
arr_access = "serialized_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("LDKTwentyBytes"):
fn_arg = "uint8_t (*" + fn_arg[15:] + ")[20]"
assert var_is_arr_regex.match(fn_arg[8:])
rust_obj = "LDKTwentyBytes"
arr_access = "data"
elif fn_arg.startswith("LDKTwelveBytes"):
fn_arg = "uint8_t (*" + fn_arg[15:] + ")[12]"
assert var_is_arr_regex.match(fn_arg[8:])
rust_obj = "LDKTwelveBytes"
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 ") or fn_arg == "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("LDKTransactionOutputs "):
fn_arg = "C2Tuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ"
rust_obj = "C2Tuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ"
elif fn_arg.startswith("LDKWitness ") or fn_arg == "LDKWitness":
if len(fn_arg) > 12 and fn_arg[11] == "*":
fn_arg = "uint8_t (" + fn_arg[11:] + ")[datalen]"
else:
fn_arg = "uint8_t (*" + fn_arg[11:] + ")[datalen]"
rust_obj = "LDKWitness"
assert var_is_arr_regex.match(fn_arg[8:])
arr_access = "data"
elif fn_arg.startswith("LDKCVec_"):
is_ptr = False
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"
elif tyn[0] == "u32Z":
new_arg = "uint32_t"
elif tyn[0] == "u16Z":
new_arg = "uint16_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
java_ty = consts.java_arr_ty_str(res.java_ty)
is_trait = res.rust_obj in trait_structs
if res.is_native_primitive or res.passed_as_ptr:
java_hu_ty = res.java_hu_ty + "[]"
if res.is_native_primitive and res.c_ty in consts.c_type_map:
if len(consts.c_type_map[res.c_ty]) > 2:
java_hu_ty = consts.c_type_map[res.c_ty][2]
return TypeInfo(rust_obj=fn_arg.split(" ")[0], java_ty=java_ty, java_hu_ty=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,
nonnull_ptr=nonnull_ptr, is_const=is_const, is_trait = is_trait,
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=java_ty, java_hu_ty=res.java_hu_ty + "[]",
java_fn_ty_arg="[" + res.java_fn_ty_arg, c_ty=consts.ptr_arr, passed_as_ptr=False, is_ptr=is_ptr,
nonnull_ptr=nonnull_ptr, is_const=is_const, is_trait = is_trait,
var_name=res.var_name, arr_len="datalen", arr_access="data", subty=res, is_native_primitive=False)
is_primitive = False
contains_trait = False
arr_len = None
mapped_type = []
java_type_plural = None
arr_ty = 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 = consts.c_type_map['bool'][0]
c_ty = "jboolean"
fn_ty_arg = "Z"
arr_ty = "bool"
fn_arg = fn_arg[4:].strip()
is_primitive = True
elif fn_arg.startswith("uint8_t"):
mapped_type = consts.c_type_map['uint8_t']
java_ty = mapped_type[0]
c_ty = "uint8_t"
fn_ty_arg = "B"
arr_ty = "uint8_t"
fn_arg = fn_arg[7:].strip()
is_primitive = True
elif fn_arg.startswith("LDKU5") or fn_arg.startswith("LDKWitnessVersion"):
java_ty = consts.c_type_map['uint8_t'][0]
if fn_arg.startswith("LDKU5"):
java_hu_ty = "UInt5"
rust_obj = "LDKU5"
fn_arg = fn_arg[6:].strip()
else:
java_hu_ty = "WitnessVersion"
rust_obj = "LDKWitnessVersion"
fn_arg = fn_arg[18:].strip()
c_ty = "uint8_t"
arr_ty = "uint8_t"
fn_ty_arg = "B"
elif fn_arg.startswith("uint16_t"):
mapped_type = consts.c_type_map['uint16_t']
java_ty = mapped_type[0]
c_ty = "uint16_t"
arr_ty = "uint16_t"
fn_ty_arg = "S"
fn_arg = fn_arg[8:].strip()
is_primitive = True
elif fn_arg.startswith("uint32_t"):
mapped_type = consts.c_type_map['uint32_t']
java_ty = mapped_type[0]
c_ty = "uint32_t"
arr_ty = "uint32_t"
fn_ty_arg = "I"
fn_arg = fn_arg[8:].strip()
is_primitive = True
elif fn_arg.startswith("int64_t"):
mapped_type = consts.c_type_map['int64_t']
java_ty = mapped_type[0]
c_ty = "int64_t"
arr_ty = "int64_t"
fn_ty_arg = "J"
fn_arg = fn_arg[7:].strip()
is_primitive = True
elif fn_arg.startswith("double"):
mapped_type = consts.c_type_map['double']
java_ty = mapped_type[0]
c_ty = "double"
arr_ty = "double"
fn_ty_arg = "D"
fn_arg = fn_arg[6:].strip()
is_primitive = True
elif fn_arg.startswith("uint64_t") or fn_arg.startswith("uintptr_t"):
# TODO: uintptr_t is arch-dependent :(
mapped_type = consts.c_type_map['uint64_t']
java_ty = mapped_type[0]
fn_ty_arg = "J"
if fn_arg.startswith("uint64_t"):
c_ty = "uint64_t"
arr_ty = "uint64_t"
fn_arg = fn_arg[8:].strip()
else:
java_ty = consts.usize_native_ty
c_ty = consts.usize_c_ty
arr_ty = "uintptr_t"
rust_obj = "uintptr_t"
fn_arg = fn_arg[9:].strip()
is_primitive = True
elif is_const and fn_arg.startswith("char *"):
java_ty = consts.java_type_map["String"]
java_hu_ty = consts.java_hu_type_map["String"]
c_ty = "const char*"
arr_ty = "LDKStr"
fn_ty_arg = "Ljava/lang/String;"
fn_arg = fn_arg[6:].strip()
elif fn_arg.startswith("LDKStr"):
rust_obj = "LDKStr"
arr_ty = "LDKStr"
java_ty = consts.java_type_map["String"]
java_hu_ty = consts.java_hu_type_map["String"]
c_ty = "jstring"
fn_ty_arg = "Ljava/lang/String;"
fn_arg = fn_arg[6:].strip()
arr_access = "chars"
arr_len = "len"
elif fn_arg.startswith("LDKError ") or fn_arg == "LDKError":
java_ty = consts.c_type_map['uint32_t'][0]
java_hu_ty = "UnqualifiedError"
rust_obj = "LDKError"
c_ty = "uint32_t"
arr_ty = "uint32_t"
fn_ty_arg = "I"
fn_arg = fn_arg[8:].strip()
else:
ma = var_ty_regex.match(fn_arg)
arr_ty = ma.group(1).strip()
if ma.group(1).strip() in unitary_enums:
assert ma.group(1).strip().startswith("LDK")
java_ty = ma.group(1).strip()[3:]
java_hu_ty = java_ty
c_ty = consts.unitary_enum_c_ty
fn_ty_arg = "Lorg/ldk/enums/" + java_ty + ";"
fn_arg = ma.group(2).strip()
rust_obj = ma.group(1).strip()
else:
c_ty = consts.ptr_c_ty
java_ty = consts.ptr_native_ty
java_hu_ty = ma.group(1).strip()
java_hu_ty = java_hu_ty.replace("LDKCOption", "Option")
java_hu_ty = java_hu_ty.replace("LDKCResult", "Result")
java_hu_ty = java_hu_ty.replace("LDKC2Tuple", "TwoTuple")
java_hu_ty = java_hu_ty.replace("LDKC3Tuple", "ThreeTuple")
java_hu_ty = java_hu_ty.replace("LDKC4Tuple", "FourTuple")
java_hu_ty = java_hu_ty.replace("LDK", "")
fn_ty_arg = "J"
fn_arg = ma.group(2).strip()
rust_obj = ma.group(1).strip()
if rust_obj in trait_structs:
contains_trait = True
elif rust_obj in complex_enums:
contains_trait = complex_enums[rust_obj]
take_by_ptr = True
if fn_arg.startswith(" *") or fn_arg.startswith("*"):
fn_arg = fn_arg.replace("*", "").strip()
is_ptr = True
c_ty = consts.ptr_c_ty
java_ty = consts.ptr_native_ty
fn_ty_arg = "J"
var_is_arr = var_is_arr_regex.match(fn_arg)
subty = None
is_trait = rust_obj in trait_structs
if var_is_arr is not None or ret_arr_len is not None:
assert(not take_by_ptr)
assert(not is_ptr)
# is there a special case for plurals?
if len(mapped_type) == 3:
java_ty = mapped_type[1]
java_hu_ty = mapped_type[2]
else:
java_ty = java_ty + "[]"
java_hu_ty = java_ty
if rust_obj == "LDKU128":
java_hu_ty = consts.u128_native_ty
c_ty = c_ty + "Array"
subty = java_c_types(arr_ty, None)
if subty is None:
assert java_c_types_none_allowed
return None
if is_ptr:
subty.pass_by_ref = True
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_hu_ty, java_fn_ty_arg="[" + fn_ty_arg, c_ty=c_ty, is_const=is_const,
passed_as_ptr=False, is_ptr=False, nonnull_ptr=nonnull_ptr, var_name="arg", subty=subty,
arr_len=var_is_arr.group(2), arr_access=arr_access, is_native_primitive=False,
is_trait=is_trait, contains_trait=contains_trait)
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, is_const=is_const,
passed_as_ptr=False, is_ptr=False, nonnull_ptr=nonnull_ptr, var_name=var_is_arr.group(1), subty=subty,
arr_len=var_is_arr.group(2), arr_access=arr_access, is_native_primitive=False,
is_trait=is_trait, contains_trait=contains_trait)
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_const=is_const, is_ptr=is_ptr, nonnull_ptr=nonnull_ptr, var_name=fn_arg, arr_len=arr_len, arr_access=arr_access, is_native_primitive=is_primitive,
contains_trait=contains_trait, subty=subty, is_trait=is_trait)
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 = {}
from gen_type_mapping import TypeMappingGenerator
type_mapping_generator = TypeMappingGenerator(java_c_types, consts, opaque_structs, clone_fns, unitary_enums, trait_structs, complex_enums, result_types, tuple_types)
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 not rty.is_native_primitive 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\n")
write_c("static inline void* untag_ptr(uint64_t ptr) {\n")
write_c("\tif (ptr < 4096) return (void*)ptr;\n")
write_c("\tif (sizeof(void*) == 4) {\n")
write_c("\t\t// For 32-bit systems, store pointers as 64-bit ints and use the 31st bit\n")
write_c("\t\treturn (void*)(uintptr_t)ptr;\n")
write_c("\t} else {\n")
write_c("\t\t// For 64-bit systems, assume the top byte is used for tagging, then\n")
write_c("\t\t// use bit 9 ^ bit 10.\n")
write_c("\t\tuint64_t tenth_bit = (((uintptr_t)ptr) & (1ULL << 54)) >> 54;\n")
write_c("\t\tuintptr_t p = (ptr & ~(1ULL << 55)) | (tenth_bit << 55);\n")
write_c("#ifdef LDK_DEBUG_BUILD\n")
write_c("\t\t// On debug builds we also use the 11th bit as a debug flag\n")
write_c("\t\tuintptr_t eleventh_bit = (((uintptr_t)ptr) & (1ULL << 53)) >> 53;\n")
write_c("\t\tCHECK(tenth_bit != eleventh_bit);\n")
write_c("\t\tp ^= 1ULL << 53;\n")
write_c("#endif\n")
write_c("\t\treturn (void*)p;\n")
write_c("\t}\n")
write_c("}\n")
write_c("static inline bool ptr_is_owned(uint64_t ptr) {\n")
write_c("\tif(ptr < 4096) return true;\n")
write_c("\tif (sizeof(void*) == 4) {\n")
write_c("\t\treturn ptr & (1ULL << 32);\n")
write_c("\t} else {\n")
write_c("\t\tuintptr_t ninth_bit = (((uintptr_t)ptr) & (1ULL << 55)) >> 55;\n")
write_c("\t\tuintptr_t tenth_bit = (((uintptr_t)ptr) & (1ULL << 54)) >> 54;\n")
write_c("#ifdef LDK_DEBUG_BUILD\n")
write_c("\t\t// On debug builds we also use the 11th bit as a debug flag\n")
write_c("\t\tuintptr_t eleventh_bit = (((uintptr_t)ptr) & (1ULL << 53)) >> 53;\n")
write_c("\t\tCHECK(tenth_bit != eleventh_bit);\n")
write_c("#endif\n")
write_c("\t\treturn (ninth_bit ^ tenth_bit) ? true : false;\n")
write_c("\t}\n")
write_c("}\n")
write_c("static inline uint64_t tag_ptr(const void* ptr, bool is_owned) {\n")
write_c("\tif ((uintptr_t)ptr < 4096) return (uint64_t)ptr;\n")
write_c("\tif (sizeof(void*) == 4) {\n")
write_c("\t\treturn (((uint64_t)ptr) | ((is_owned ? 1ULL : 0) << 32));\n")
write_c("\t} else {\n")
write_c("\t\tCHECK(sizeof(uintptr_t) == 8);\n")
write_c("\t\tuintptr_t tenth_bit = (((uintptr_t)ptr) & (1ULL << 54)) >> 54;\n")
write_c("\t\tuintptr_t t = (((uintptr_t)ptr) | (((is_owned ? 1ULL : 0ULL) ^ tenth_bit) << 55));\n")
write_c("#ifdef LDK_DEBUG_BUILD\n")
write_c("\t\tuintptr_t ninth_bit = (((uintptr_t)ptr) & (1ULL << 55)) >> 55;\n")
write_c("\t\tuintptr_t eleventh_bit = (((uintptr_t)ptr) & (1ULL << 53)) >> 53;\n")
write_c("\t\tCHECK(ninth_bit == tenth_bit);\n")
write_c("\t\tCHECK(ninth_bit == eleventh_bit);\n")
write_c("\t\tt ^= 1ULL << 53;\n")
write_c("#endif\n")
write_c("\t\tCHECK(ptr_is_owned(t) == is_owned);\n")
write_c("\t\tCHECK(untag_ptr(t) == ptr);\n")
#write_c("\t\tCHECK(untag_ptr((uintptr_t)untag_ptr(t)) == ptr);\n")
write_c("\t\treturn t;\n")
write_c("\t}\n")
write_c("}\n\n")
java_c_types_none_allowed = False # C structs created by cbindgen are declared in dependency order
with open(f"{sys.argv[3]}/structs/UtilMethods{consts.file_ext}", "a") as util:
util.write(consts.util_fn_pfx)
with open(sys.argv[1]) as in_h, open(f"{sys.argv[2]}/bindings{consts.file_ext}", "w") as out_java:
# Map a top-level function
def map_fn(line, re_match, ret_arr_len, c_call_string, doc_comment):
map_fn_with_ref_option(line, re_match, ret_arr_len, c_call_string, doc_comment, False)
def map_fn_with_ref_option(line, re_match, ret_arr_len, c_call_string, doc_comment, force_holds_ref):
method_return_type = re_match.group(1)
method_name = re_match.group(2)
method_comma_separated_arguments = re_match.group(3)
method_arguments = method_comma_separated_arguments.split(',')
if method_name.startswith("__"):
return
is_free = method_name.endswith("_free")
if method_name.startswith("COption") or method_name.startswith("CResult"):
struct_meth = method_name.rsplit("Z", 1)[0][1:] + "Z"
expected_struct = "LDKC" + struct_meth
struct_meth_name = method_name[len(struct_meth) + 1:].strip("_")
elif method_name.startswith("C2Tuple") or method_name.startswith("C3Tuple") or method_name.startswith("C4Tuple"):
tuple_name = method_name.rsplit("Z", 1)[0][2:] + "Z"
if method_name.startswith("C2Tuple"):
struct_meth = "Two" + tuple_name
expected_struct = "LDKC2" + tuple_name
elif method_name.startswith("C3Tuple"):
struct_meth = "Three" + tuple_name
expected_struct = "LDKC3" + tuple_name
else:
struct_meth = "Four" + tuple_name
expected_struct = "LDKC4" + tuple_name
struct_meth_name = method_name[len(tuple_name) + 2:].strip("_")
else:
struct_meth = method_name.split("_")[0]
expected_struct = "LDK" + struct_meth
struct_meth_name = method_name[len(struct_meth) + 1 if len(struct_meth) != 0 else 0:].strip("_")
(params_nullable, ret_nullable) = doc_to_params_ret_nullable(doc_comment)
if ret_nullable:
return_type_info = type_mapping_generator.map_nullable_type(method_return_type.strip() + " ret", True, ret_arr_len, False, force_holds_ref)
else:
return_type_info = type_mapping_generator.map_type(method_return_type.strip() + " ret", True, ret_arr_len, False, force_holds_ref)
if method_name.endswith("_clone") and expected_struct not in unitary_enums:
# LDKWitness is mapped as an array, so no need to implement clone
if expected_struct == "LDKWitness":
return
meth_line = "uint64_t " + expected_struct.replace("LDK", "") + "_clone_ptr(" + expected_struct + " *NONNULL_PTR arg)"
write_c("static inline " + meth_line + " {\n")
write_c("\t" + return_type_info.ret_conv[0].replace("\n", "\n\t"))
write_c(method_name + "(arg)")
write_c(return_type_info.ret_conv[1].replace("\n", "\n\t"))
write_c("\n\treturn " + return_type_info.ret_conv_name + ";\n}\n")
map_fn(meth_line + ";\n", re.compile("(uint64_t) ([A-Za-z_0-9]*)\((.*)\)").match(meth_line), None, None, None)
argument_types = []
default_constructor_args = {}
takes_self = False
takes_self_ptr = False
for argument_index, argument in enumerate(method_arguments):
arg_ty = type_mapping_generator.java_c_types(argument, None)
argument_conversion_info = None
if argument_index == 0 and arg_ty.java_hu_ty == struct_meth:
argument_conversion_info = type_mapping_generator.map_type_with_info(arg_ty, False, None, is_free, True, False)
takes_self = True
if argument_conversion_info.ty_info.is_ptr:
takes_self_ptr = True
elif arg_ty.var_name in params_nullable:
argument_conversion_info = type_mapping_generator.map_type_with_info(arg_ty, False, None, is_free, True, True)
if argument_conversion_info.arg_conv is not None and "WARNING" in argument_conversion_info.arg_conv:
arg_ty_info = java_c_types(argument, None)
print("WARNING: Remapping argument " + arg_ty_info.var_name + " of function " + method_name + " to a reference")
print(" The argument appears to require a move, or not clonable, and is nullable.")
print(" Normally for arguments that require a move and are not clonable, we split")
print(" the argument into the type's constructor's arguments and just use those to")
print(" construct a new object on the fly.")
print(" However, because the object is nullable, doing so would mean we can no")
print(" longer allow the user to pass null, as we now have an argument list instead.")
print(" Thus, we blindly assume its really an Option<&Type> instead of an Option<Type>.")
print(" It may or may not actually be a reference, but its the simplest mapping option")
print(" and also the only use of this code today.")
arg_ty_info.requires_clone = False
argument_conversion_info = type_mapping_generator.map_type_with_info(arg_ty_info, False, None, is_free, True, True)
assert argument_conversion_info.nullable
assert argument_conversion_info.arg_conv is not None and "WARNING" not in argument_conversion_info.arg_conv
else:
argument_conversion_info = type_mapping_generator.map_type_with_info(arg_ty, False, None, is_free, True, False)
if argument_conversion_info.arg_conv is not None and "WARNING" in argument_conversion_info.arg_conv:
if argument_conversion_info.rust_obj in constructor_fns:
assert not is_free
for explode_idx, explode_arg in enumerate(constructor_fns[argument_conversion_info.rust_obj].split(',')):
explode_arg_conv = type_mapping_generator.map_type(explode_arg, False, None, False, True)
if explode_idx == 0 and explode_arg_conv.c_ty == "void":
continue # (void) is C lingo for "no arguments)
if explode_arg_conv.c_ty == "void":
assert False
if not argument_conversion_info.arg_name in default_constructor_args:
default_constructor_args[argument_conversion_info.arg_name] = []
default_constructor_args[argument_conversion_info.arg_name].append(explode_arg_conv)
argument_types.append(argument_conversion_info)
if not takes_self and return_type_info.java_hu_ty != struct_meth:
if not return_type_info.java_hu_ty.startswith("Result_" + struct_meth):
struct_meth_name = method_name
struct_meth = ""
expected_struct = ""
impl_on_struct = (expected_struct in opaque_structs or expected_struct in trait_structs or
expected_struct in complex_enums or expected_struct in complex_enums or
expected_struct in result_types or expected_struct in tuple_types) and not is_free
impl_on_utils = not impl_on_struct and (not is_free and not method_name.endswith("_clone") and
not method_name.startswith("TxOut") and not method_name.startswith("TxIn") and
not method_name.startswith("BigEndianScalar") and not method_name.startswith("WitnessProgram") and
not method_name.startswith("Address") and
not method_name.startswith("_") and
method_name != "check_platform" and method_name != "Result_read" and
not expected_struct in unitary_enums and
((not method_name.startswith("C2Tuple_") and not method_name.startswith("C3Tuple_") and not method_name.startswith("C4Tuple_"))
or method_name.endswith("_read")))
# If we're adding a static method, and it returns a primitive or an array of primitives,
# and a variable conversion adds a reference on the return type (via `this`), skip the
# variable's conversion reference-add (as we obviously cannot need a reference).
if impl_on_utils and (return_type_info.is_native_primitive or
(return_type_info.ty_info.subty is not None and return_type_info.ty_info.subty.is_native_primitive)):
for arg in argument_types:
if arg.from_hu_conv is not None and arg.from_hu_conv[1] != "":
if "this" in arg.from_hu_conv[1]:
arg.from_hu_conv = (arg.from_hu_conv[0], "")
out_java.write("\t// " + line)
args_known = True # We no longer ever set this to false
(out_java_delta, out_c_delta, out_java_struct_delta) = \
consts.map_function(argument_types, c_call_string, method_name, struct_meth_name, return_type_info, struct_meth, default_constructor_args, takes_self, takes_self_ptr, args_known, type_mapping_generator, doc_comment)
out_java.write(out_java_delta)
if is_free:
assert len(argument_types) == 1
assert return_type_info.c_ty == "void"
write_c(consts.c_fn_ty_pfx + "void " + consts.c_fn_name_define_pfx(method_name, True) + argument_types[0].c_ty + " " + argument_types[0].ty_info.var_name + ") {\n")
if argument_types[0].ty_info.passed_as_ptr and not argument_types[0].ty_info.rust_obj in opaque_structs:
write_c("\tif (!ptr_is_owned(" + argument_types[0].ty_info.var_name + ")) return;\n")
for info in argument_types:
if info.arg_conv is not None:
write_c("\t" + info.arg_conv.replace('\n', "\n\t") + "\n")
assert c_call_string is None
write_c("\t" + method_name + "(")
if argument_types[0].arg_conv_name is not None:
write_c(argument_types[0].arg_conv_name)
write_c(");")
for info in argument_types:
if info.arg_conv_cleanup is not None:
write_c("\n\t" + info.arg_conv_cleanup.replace("\n", "\n\t"))
write_c("\n}\n\n")
else:
write_c(out_c_delta)
out_java_struct = None
if impl_on_struct:
out_java_struct = open(f"{sys.argv[3]}/structs/{struct_meth}{consts.file_ext}", "a")
out_java_struct.write(out_java_struct_delta)
elif impl_on_utils:
out_java_struct = open(f"{sys.argv[3]}/structs/UtilMethods{consts.file_ext}", "a")
for line in out_java_struct_delta.splitlines():
out_java_struct.write(line + "\n")
def map_unitary_enum(struct_name, field_lines, enum_doc_comment):
assert struct_name.startswith("LDK")
with open(f"{sys.argv[3]}/enums/{struct_name[3:]}{consts.file_ext}", "w") as out_java_enum:
unitary_enums.add(struct_name)
for idx, (struct_line, _) in enumerate(field_lines):
if idx == 0:
assert(struct_line == "typedef enum %s {" % struct_name)
elif idx == len(field_lines) - 3:
assert(struct_line.endswith("_Sentinel,"))
elif idx == len(field_lines) - 2:
assert(struct_line == "} %s;" % struct_name)
elif idx == len(field_lines) - 1:
assert(struct_line == "")
assert struct_name.startswith("LDK")
(c_out, native_file_out, native_out) = consts.native_c_unitary_enum_map(struct_name[3:], [(x.strip().strip(","), y) for x, y in field_lines[1:-3]], enum_doc_comment)
write_c(c_out)
out_java_enum.write(native_file_out)
out_java.write(native_out)
def map_complex_enum(struct_name, union_enum_items, inline_enum_variants, enum_doc_comment):
java_hu_type = struct_name.replace("LDK", "").replace("COption", "Option")
enum_variants = []
tag_field_lines = union_enum_items["field_lines"]
contains_trait = False
for idx, (struct_line, variant_docs) in enumerate(tag_field_lines):
if idx == 0:
assert(struct_line == "typedef enum %s_Tag {" % struct_name)
elif idx == len(tag_field_lines) - 3:
assert(struct_line.endswith("_Sentinel,"))
elif idx == len(tag_field_lines) - 2:
assert(struct_line == "} %s_Tag;" % struct_name)
elif idx == len(tag_field_lines) - 1:
assert(struct_line == "")
else:
variant_name = struct_line.strip(' ,')[len(struct_name) + 1:]
fields = []
if "LDK" + variant_name in union_enum_items:
enum_var_lines = union_enum_items["LDK" + variant_name]
for idx, (field, field_docs) in enumerate(enum_var_lines):
if idx != 0 and idx < len(enum_var_lines) - 2 and field.strip() != "":
field_ty = type_mapping_generator.java_c_types(field.strip(' ;'), None)
contains_trait |= field_ty.contains_trait
if field_docs is not None and doc_to_field_nullable(field_docs):
field_conv = type_mapping_generator.map_type_with_info(field_ty, False, None, False, True, True)
else:
field_conv = type_mapping_generator.map_type_with_info(field_ty, False, None, False, True, False)
fields.append((field_conv, field_docs))
enum_variants.append(ComplexEnumVariantInfo(variant_name, variant_docs, fields, False))
elif camel_to_snake(variant_name) in inline_enum_variants:
# TODO: If we ever have a rust enum Variant(Option<Struct>) we need to pipe
# docs through to there, and then potentially mark the field nullable.
(variant_info, variant_field_docs) = inline_enum_variants[camel_to_snake(variant_name)]
variant_ty_text = variant_info + " " + camel_to_snake(variant_name)
variant_ty_info = type_mapping_generator.java_c_types(variant_ty_text, None)
if variant_field_docs is not None and doc_to_field_nullable(variant_field_docs):
mapped = type_mapping_generator.map_type_with_info(variant_ty_info, False, None, False, True, True)
else:
mapped = type_mapping_generator.map_type_with_info(variant_ty_info, False, None, False, True, False)
contains_trait |= mapped.ty_info.contains_trait
fields.append((mapped, None))
enum_variants.append(ComplexEnumVariantInfo(variant_name, variant_docs, fields, True))
else:
enum_variants.append(ComplexEnumVariantInfo(variant_name, variant_docs, fields, True))
complex_enums[struct_name] = contains_trait
with open(f"{sys.argv[3]}/structs/{java_hu_type}{consts.file_ext}", "w") as out_java_enum:
(out_java_addendum, out_java_enum_addendum, out_c_addendum) = consts.map_complex_enum(struct_name, enum_variants, camel_to_snake, enum_doc_comment)
out_java_enum.write(out_java_enum_addendum)
out_java.write(out_java_addendum)
write_c(out_c_addendum)
def map_trait(struct_name, field_var_lines, trait_fn_lines, trait_doc_comment):
with open(f"{sys.argv[3]}/structs/{struct_name.replace('LDK', '')}{consts.file_ext}", "w") as out_java_trait:
field_var_convs = []
flattened_field_var_convs = []
for var_line in field_var_lines:
if var_line.group(1) in trait_structs:
field_var_convs.append((var_line.group(1), var_line.group(2), trait_structs[var_line.group(1)]))
flattened_field_var_convs.append((var_line.group(1), var_line.group(2), var_line.group(2)))
for field_var in trait_structs[var_line.group(1)]:
if isinstance(field_var, ConvInfo):
flattened_field_var_convs.append(field_var)
else:
path = var_line.group(2)
if len(field_var) > 2:
path = var_line.group(2) + "." + field_var[2]
flattened_field_var_convs.append((field_var[0], field_var[1], path))
else:
mapped = type_mapping_generator.map_type(var_line.group(1) + " " + var_line.group(2), False, None, False, False)
field_var_convs.append(mapped)
flattened_field_var_convs.append(mapped)
trait_structs[struct_name] = flattened_field_var_convs
field_fns = []
for fn_docs, fn_line in trait_fn_lines:
if fn_line == "cloned":
ret_ty_info = type_mapping_generator.map_type("void", True, None, False, False)
field_fns.append(TraitMethInfo("cloned", False, ret_ty_info, [], fn_docs))
else:
(nullable_params, ret_nullable) = doc_to_params_ret_nullable(fn_docs)
if ret_nullable:
ret_ty_info = type_mapping_generator.map_nullable_type(fn_line.group(2).strip() + " ret", True, None, False, False)
ret_ty_info.nullable = True
else:
ret_ty_info = type_mapping_generator.map_type(fn_line.group(2).strip() + " ret", True, None, False, False)
is_const = fn_line.group(4) is not None
arg_tys = []
for idx, arg in enumerate(fn_line.group(5).split(',')):
if arg == "":
continue
arg_ty_info = type_mapping_generator.java_c_types(arg, None)
if arg_ty_info.var_name in nullable_params:
# Types that are actually null instead of all-0s aren't yet handled on the Java side:
arg_conv_info = type_mapping_generator.map_type_with_info(arg_ty_info, True, None, False, False, True)
else:
arg_conv_info = type_mapping_generator.map_type_with_info(arg_ty_info, True, None, False, False, False)
arg_tys.append(arg_conv_info)
field_fns.append(TraitMethInfo(fn_line.group(3), is_const, ret_ty_info, arg_tys, fn_docs))
(out_java_addendum, out_java_trait_addendum, out_c_addendum) = consts.native_c_map_trait(struct_name, field_var_convs, flattened_field_var_convs, field_fns, trait_doc_comment)
write_c(out_c_addendum)
out_java_trait.write(out_java_trait_addendum)
out_java.write(out_java_addendum)
for fn_docs, fn_line in trait_fn_lines:
if fn_line == "cloned":
continue
# 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) != "eq" and not is_log:
dummy_line = fn_line.group(2) + struct_name.replace("LDK", "") + "_" + fn_line.group(3) + " " + struct_name + " *NONNULL_PTR 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", fn_docs)
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 + " *NONNULL_PTR 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", fn_docs)
def map_result(struct_name, res_ty, err_ty):
result_types.add(struct_name)
human_ty = struct_name.replace("LDKCResult", "Result")
res_map = type_mapping_generator.map_type(res_ty + " res", True, None, False, True)
err_map = type_mapping_generator.map_type(err_ty + " err", True, None, False, True)
java_hu_struct = consts.map_result(struct_name, res_map, err_map)
create_getter(struct_name, res_ty, "ok", ("*", "->contents.result"), ("", "->result_ok"))
create_getter(struct_name, err_ty, "err", ("*", "->contents.err"), ("!", "->result_ok"))
with open(f"{sys.argv[3]}/structs/{human_ty}{consts.file_ext}", "w") as out_java_struct:
out_java_struct.write(java_hu_struct)
def create_getter(struct_name, field_decl, field_name, accessor, check_sfx):
field_ty = java_c_types(field_decl + " " + field_name, None)
ptr_fn_defn = field_decl + " *" + struct_name.replace("LDK", "") + "_get_" + field_name + "(" + struct_name + " *NONNULL_PTR owner)"
owned_fn_defn = field_decl + " " + struct_name.replace("LDK", "") + "_get_" + field_name + "(" + struct_name + " *NONNULL_PTR owner)"
holds_ref = False
if field_ty.rust_obj is not None and field_ty.rust_obj in opaque_structs:
fn_defn = owned_fn_defn
write_c("static inline " + fn_defn + "{\n")
write_c("\t" + field_ty.rust_obj + " ret = " + accessor[0] + "owner" + accessor[1] + ";\n")
write_c("\tret.is_owned = false;\n")
write_c("\treturn ret;\n")
elif field_ty.rust_obj is not None and field_ty.rust_obj.replace("LDK", "") + "_clone" in clone_fns:
fn_defn = owned_fn_defn
write_c("static inline " + fn_defn + "{\n")
if check_sfx is not None:
write_c("CHECK(" + check_sfx[0] + "owner" + check_sfx[1] + ");\n")
write_c("\treturn " + field_ty.rust_obj.replace("LDK", "") + "_clone(&" + accessor[0] + "owner" + accessor[1] + ");\n")
elif field_ty.arr_len is not None or field_ty.is_native_primitive or field_ty.rust_obj in unitary_enums:
fn_defn = owned_fn_defn
write_c("static inline " + fn_defn + "{\n")
if check_sfx is not None:
write_c("CHECK(" + check_sfx[0] + "owner" + check_sfx[1] + ");\n")
write_c("\treturn " + accessor[0] + "owner" + accessor[1] + ";\n")
holds_ref = True
else:
fn_defn = ptr_fn_defn
write_c("static inline " + fn_defn + "{\n")
if check_sfx is not None:
write_c("CHECK(" + check_sfx[0] + "owner" + check_sfx[1] + ");\n")
write_c("\treturn &" + accessor[0] + "owner" + accessor[1] + ";\n")
holds_ref = True
write_c("}\n")
dummy_line = fn_defn + ";\n"
map_fn_with_ref_option(dummy_line, reg_fn_regex.match(dummy_line), None, None, "", holds_ref)
def map_tuple(struct_name, field_lines):
human_ty = struct_name.replace("LDKC2Tuple", "TwoTuple").replace("LDKC3Tuple", "ThreeTuple").replace("LDKC4Tuple", "FourTuple")
with open(f"{sys.argv[3]}/structs/{human_ty}{consts.file_ext}", "w") as out_java_struct:
out_java_struct.write(consts.map_tuple(struct_name))
ty_list = []
for idx, (line, _) in enumerate(field_lines):
if idx != 0 and idx < len(field_lines) - 2:
ty_list.append(java_c_types(line.strip(';'), None))
tuple_types[struct_name] = (ty_list, struct_name)
# Map virtual getter functions
for idx, (line, _) in enumerate(field_lines):
if idx != 0 and idx < len(field_lines) - 2:
field_name = chr(ord('a') + idx - 1)
assert line.endswith(" " + field_name + ";")
create_getter(struct_name, line[:-3].strip(), field_name, ("", "->" + field_name), None)
out_java.write(consts.bindings_header)
with open(f"{sys.argv[2]}/version{consts.file_ext}", "w") as out_java_version:
out_java_version.write(consts.bindings_version_file.replace('<git_version_ldk_garbagecollected>', local_git_version))
with open(f"{sys.argv[3]}/structs/CommonBase{consts.file_ext}", "w") as out_java_struct:
out_java_struct.write(consts.common_base)
block_comment = None
last_block_comment = None
cur_block_obj = None
const_val_regex = re.compile("^extern const ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$")
line_indicates_result_regex = re.compile("^ union (LDKCResult_[A-Za-z_0-9]*Ptr) contents;$")
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(" struct LDKCVec_MessageSendEventZ (*get_and_clear_pending_msg_events)(const void *this_arg);"))
assert(line_indicates_trait_regex.match(" struct LDKCVec_u8Z (*write)(const void *this_arg);"))
line_indicates_trait_clone_regex = re.compile("^ void \(\*cloned\)\(struct ([A-Za-z0-9])* \*NONNULL_PTR new_[A-Za-z0-9]*\);$")
assert(line_indicates_trait_clone_regex.match(" void (*cloned)(struct LDKSign *NONNULL_PTR new_Sign);"))
line_field_var_regex = re.compile("^ struct ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$")
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 LDKCVec_u8Z {"))
assert(struct_name_regex.match("typedef enum LDKNetwork {"))
union_enum_items = {}
result_ptr_struct_items = {}
for line in in_h:
if block_comment is not None:
if line.endswith("*/\n"):
last_block_comment = block_comment.strip("\n")
block_comment = None
else:
block_comment = block_comment + line.strip(" /*")
elif cur_block_obj is not None:
cur_block_obj = cur_block_obj + line
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 = []
last_struct_block_comment = None