+ 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")
+ out_c.write("static jclass " + struct_name + "_" + var_name + "_class = NULL;\n")
+ out_c.write("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");
+
+ out_c.write("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:]
+ out_c.write("\t" + struct_name + "_" + var_name + "_class =\n")
+ out_c.write("\t\t(*env)->NewGlobalRef(env, (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + struct_name + "$" + var_name + ";\"));\n")
+ out_c.write("\tCHECK(" + struct_name + "_" + var_name + "_class != NULL);\n")
+ out_c.write("\t" + struct_name + "_" + var_name + "_meth = (*env)->GetMethodID(env, " + struct_name + "_" + var_name + "_class, \"<init>\", \"(" + init_meth_jty_strs[var_name] + ")V\");\n")
+ out_c.write("\tCHECK(" + struct_name + "_" + var_name + "_meth != NULL);\n")
+ out_c.write("}\n")
+ out_c.write("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1ref_1from_1ptr (JNIEnv * _env, jclass _c, jlong ptr) {\n")
+ out_c.write("\t" + struct_name + " *obj = (" + struct_name + "*)ptr;\n")
+ out_c.write("\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:]
+ out_c.write("\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:
+ out_c.write("\t\t\t" + field_map.ret_conv[0].replace("\n", "\n\t\t\t"))
+ out_c.write("obj->" + camel_to_snake(var_name) + "." + field_map.arg_name)
+ out_c.write(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
+ out_c.write("\t\t\treturn (*_env)->NewObject(_env, " + struct_name + "_" + var_name + "_class, " + struct_name + "_" + var_name + "_meth" + c_params_text + ");\n")
+ out_c.write("\t\t}\n")
+ out_c.write("\t\tdefault: abort();\n")
+ out_c.write("\t}\n}\n")
+ out_java_enum.write("}\n")
+
+ def map_trait(struct_name, field_var_lines, trait_fn_lines):
+ with open(sys.argv[3] + "/structs/" + struct_name.replace("LDK","") + ".java", "w") as out_java_trait:
+ out_c.write("typedef struct " + struct_name + "_JCalls {\n")
+ out_c.write("\tatomic_size_t refcnt;\n")
+ out_c.write("\tJavaVM *vm;\n")
+ out_c.write("\tjweak o;\n")
+ field_var_convs = []
+ 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")
+ 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(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")
+
+ 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_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")
+
+ java_trait_constr = "\tpublic " + struct_name.replace("LDK", "") + "(" + 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)
+ else:
+ 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\tthis(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(2) != "free" and fn_line.group(2) != "clone":
+ ret_ty_info = map_type(fn_line.group(1), True, None, False, False)
+
+ out_java.write("\t\t " + ret_ty_info.java_ty + " " + fn_line.group(2) + "(")
+ java_trait_constr = java_trait_constr + "\t\t\t@Override public " + ret_ty_info.java_ty + " " + fn_line.group(2) + "("
+ out_java_trait.write("\t\t" + ret_ty_info.java_hu_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")
+ else:
+ out_c.write("void* this_arg")
+
+ arg_names = []
+ for idx, arg in enumerate(fn_line.group(4).split(',')):
+ if arg == "":
+ continue
+ if idx >= 2:
+ out_java.write(", ")
+ java_trait_constr = java_trait_constr + ", "
+ out_java_trait.write(", ")
+ out_c.write(", ")
+ arg_conv_info = map_type(arg, True, None, False, False)
+ out_c.write(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(java_meth_descr)
+
+ out_java.write(");\n")
+ out_java_trait.write(");\n")
+ java_trait_constr = java_trait_constr + ") {\n"
+ out_c.write(") {\n")
+ out_c.write("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n")
+ out_c.write("\tJNIEnv *_env;\n")
+ out_c.write("\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:
+ out_c.write("\t" + arg_info.ret_conv[0].replace('\n', '\n\t'));
+ out_c.write(arg_info.arg_name)
+ out_c.write(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"
+
+ out_c.write("\tjobject obj = (*_env)->NewLocalRef(_env, j_calls->o);\n\tCHECK(obj != NULL);\n")
+ if ret_ty_info.c_ty.endswith("Array"):
+ out_c.write("\t" + ret_ty_info.c_ty + " arg = (*_env)->CallObjectMethod(_env, obj, j_calls->" + fn_line.group(2) + "_meth")
+ elif not ret_ty_info.passed_as_ptr:
+ out_c.write("\treturn (*_env)->Call" + ret_ty_info.java_ty.title() + "Method(_env, obj, j_calls->" + fn_line.group(2) + "_meth")
+ else:
+ out_c.write("\t" + fn_line.group(1).strip() + "* ret = (" + fn_line.group(1).strip() + "*)(*_env)->CallLongMethod(_env, obj, j_calls->" + fn_line.group(2) + "_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(2) + "("
+ else:
+ java_trait_constr = java_trait_constr + "\t\t\t\targ." + fn_line.group(2) + "("
+
+ for idx, arg_info in enumerate(arg_names):
+ if arg_info.ret_conv is not None:
+ out_c.write(", " + arg_info.ret_conv_name)
+ else:
+ out_c.write(", " + 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
+ out_c.write(");\n");
+ if ret_ty_info.arg_conv is not None:
+ out_c.write("\t" + ret_ty_info.arg_conv.replace("\n", "\n\t") + "\n\treturn " + ret_ty_info.arg_conv_name + ";\n")
+
+ out_c.write("}\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//TODO: May need to call: " + ret_ty_info.from_hu_conv[1] + ";\n"
+ if is_common_base_ext(ret_ty_info.rust_obj):
+ 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(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\tJNIEnv *env;\n")
+ out_c.write("\t\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_8) == JNI_OK);\n")
+ out_c.write("\t\t(*env)->DeleteWeakGlobalRef(env, j_calls->o);\n")
+ out_c.write("\t\tFREE(j_calls);\n")
+ out_c.write("\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 + ", new " + var_line.group(2) + "(" + var_line.group(2) + ").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}\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 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))
+ out_c.write(", jobject " + var_line.group(2))
+ else:
+ out_java.write(", " + field_var_convs[idx].java_ty + " " + var_line.group(2))
+ out_c.write(", " + field_var_convs[idx].c_ty + " " + 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("\tCHECK(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("\tDO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);\n")
+ out_c.write("\tcalls->o = (*env)->NewWeakGlobalRef(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("\tCHECK(calls->" + fn_line.group(2) + "_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:
+ out_c.write("\n\t" + field_var_convs[idx].arg_conv.replace("\n", "\n\t") +"\n")
+ out_c.write("\n\t" + struct_name + " ret = {\n")
+ out_c.write("\t\t.this_arg = (void*) calls,\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")
+ else:
+ clone_fns.add(struct_name + "_clone")
+ out_c.write("\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:
+ out_c.write("\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:
+ out_c.write("\t\t." + var_line.group(2) + " = " + field_var_convs[idx].arg_conv_name + ",\n")
+ out_c.write("\t\t.set_" + var_line.group(2) + " = NULL,\n")
+ else:
+ out_c.write("\t\t." + var_line.group(2) + " = " + var_line.group(2) + ",\n")
+ out_c.write("\t\t.set_" + var_line.group(2) + " = NULL,\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 idx, var_line in enumerate(field_var_lines):
+ if var_line.group(1) in trait_structs:
+ out_c.write(", jobject " + var_line.group(2))
+ else:
+ out_c.write(", " + field_var_convs[idx].c_ty + " " + 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:
+ out_c.write(", " + var_line.group(2))
+ out_c.write(");\n")
+ out_c.write("\treturn (long)res_ptr;\n")
+ out_c.write("}\n")
+
+ out_java.write("\tpublic static native " + struct_name + " " + struct_name + "_get_obj_from_jcalls(long val);\n")
+ out_c.write("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1get_1obj_1from_1jcalls (JNIEnv * env, jclass _a, jlong val) {\n")
+ out_c.write("\tjobject ret = (*env)->NewLocalRef(env, ((" + struct_name + "_JCalls*)val)->o);\n")
+ out_c.write("\tCHECK(ret != NULL);\n")
+ out_c.write("\treturn ret;\n")
+ out_c.write("}\n")
+
+ for fn_line in trait_fn_lines:
+ # For now, just disable enabling the _call_log - we don't know how to inverse-map String
+ is_log = fn_line.group(2) == "log" and struct_name == "LDKLogger"
+ if fn_line.group(2) != "free" and fn_line.group(2) != "clone" and fn_line.group(2) != "eq" and not is_log:
+ dummy_line = fn_line.group(1) + struct_name.replace("LDK", "") + "_" + fn_line.group(2) + " " + struct_name + "* this_arg" + fn_line.group(4) + "\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(2) + ")(this_arg_conv->this_arg")
+ for idx, var_line in enumerate(field_var_lines):
+ if var_line.group(1) not in trait_structs:
+ out_c.write(var_line.group(1) + " " + struct_name + "_set_get_" + var_line.group(2) + "(" + struct_name + "* this_arg) {\n")
+ out_c.write("\tif (this_arg->set_" + var_line.group(2) + " != NULL)\n")
+ out_c.write("\t\tthis_arg->set_" + var_line.group(2) + "(this_arg);\n")
+ out_c.write("\treturn this_arg->" + var_line.group(2) + ";\n")
+ out_c.write("}\n")
+ dummy_line = var_line.group(1) + " " + struct_name.replace("LDK", "") + "_get_" + var_line.group(2) + " " + struct_name + "* this_arg" + fn_line.group(4) + "\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")
+
+ out_c.write("""#include \"org_ldk_impl_bindings.h\"
+#include <rust_types.h>
+#include <lightning.h>
+#include <string.h>
+#include <stdatomic.h>
+""")
+
+ if sys.argv[5] == "false":
+ out_c.write("#define MALLOC(a, _) malloc(a)\n")
+ out_c.write("#define FREE(p) if ((long)(p) > 1024) { free(p); }\n")
+ out_c.write("#define DO_ASSERT(a) (void)(a)\n")
+ out_c.write("#define CHECK(a)\n")
+ else:
+ out_c.write("""#include <assert.h>
+// 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 <threads.h>
+#include <execinfo.h>
+#include <unistd.h>
+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) {
+ alloc_freed(ptr);
+ __real_free(ptr);
+}
+
+void* __real_realloc(void* ptr, size_t newlen);
+void* __wrap_realloc(void* ptr, size_t len) {
+ 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);
+}
+""")