#!/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/enums/ /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)
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:
+with open(sys.argv[1]) as in_h, open(sys.argv[2], "w") as out_java, open(sys.argv[4], "w") as out_c:
opaque_structs = set()
trait_structs = set()
unitary_enums = set()
+ 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("_")
+
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):
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_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
is_ptr = True
c_ty = "jlong"
java_ty = "long"
+ fn_ty_arg = "J"
var_is_arr = var_is_arr_regex.match(fn_arg)
if var_is_arr is not None or ret_arr_len is not None:
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 + ");";
+ ret_conv = ("CANT PASS TRAIT TO Java?", ""), ret_conv_name = "NO CONV POSSIBLE")
+ if ty_info.rust_obj != "LDKu8slice":
+ # Don't bother free'ing slices passed in - we often pass them Rust -> Rust
+ 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 = base_conv + "\n" + ty_info.var_name + "_conv.is_owned = true;",
arg_conv_name = ty_info.var_name + "_conv",
- ret_conv = None, ret_conv_name = None)
+ ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";"), ret_conv_name = ty_info.var_name + "_ref")
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)
+ ret_conv = ("long " + ty_info.var_name + "_ref = (long)&", ";"), ret_conv_name = ty_info.var_name + "_ref")
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)
+ ret_conv = None, ret_conv_name = None) # its a pointer, no conv needed
elif ty_info.is_ptr:
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)
# 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 = (ty_info.rust_obj + "* ret = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*ret = ", ";\nDO_ASSERT(ret->is_owned);\nret->is_owned = false;"),
ret_conv_name = "(long)ret",
arg_conv = None, arg_conv_name = None)
else:
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)
- 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 ")
else:
out_c.write("\treturn ");
- out_c.write(re_match.group(2) + "(")
+ if c_call_string is None:
+ out_c.write(re_match.group(2) + "(")
+ else:
+ out_c.write(c_call_string)
for idx, info in enumerate(arg_names):
if info.arg_conv_name is not None:
if idx != 0:
out_c.write(", ")
+ elif c_call_string is not None:
+ continue
out_c.write(info.arg_conv_name)
out_c.write(")")
if ret_info.ret_conv is not None:
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("\tJavaVM *vm;\n")
out_c.write("\tjobject o;\n")
for var_line in field_var_lines:
if var_line.group(1) in trait_structs:
out_java.write(");\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').replace("_env", "j_calls->env"));
+ out_c.write("\t" + arg_info.ret_conv[0].replace('\n', '\n\t').replace("_env", "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")
+ out_c.write(arg_info.ret_conv[1].replace('\n', '\n\t').replace("_env", "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")
+ out_c.write("\treturn (*env)->Call" + ret_ty_info.java_ty.title() + "Method(env, j_calls->o, j_calls->" + fn_line.group(2) + "_meth")
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");
+ out_c.write("\t" + fn_line.group(1).strip() + "* ret = (" + fn_line.group(1).strip() + "*)(*env)->CallLongMethod(env, j_calls->o, j_calls->" + fn_line.group(2) + "_meth");
for arg_info in arg_names:
if arg_info.ret_conv is not None:
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\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)->DeleteGlobalRef(env, j_calls->o);\n")
out_c.write("\t\tFREE(j_calls);\n")
out_c.write("\t}\n}\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("\tDO_ASSERT(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("\tDO_ASSERT((*env)->GetJavaVM(env, &calls->vm) == 0);\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("\tDO_ASSERT(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")
for fn_line in trait_fn_lines:
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("\treturn ((" + struct_name + "_JCalls*)val)->o;\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 + "_call_" + fn_line.group(2) + " " + struct_name + "* 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, "(arg_conv->" + fn_line.group(2) + ")(arg_conv->this_arg")
+
+ 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[4] == "false":
+ out_c.write("#define MALLOC(a, _) malloc(a)\n")
+ out_c.write("#define FREE free\n")
+ out_c.write("#define DO_ASSERT(a) (void)(a)\n")
+ else:
+ out_c.write("""#include <assert.h>
+#define DO_ASSERT(a) do { bool _assert_val = (a); assert(_assert_val); } while(0)
+
+#include <threads.h>
+static mtx_t allocation_mtx;
+
+void __attribute__((constructor)) init_mtx() {
+ DO_ASSERT(mtx_init(&allocation_mtx, mtx_plain) == thrd_success);
+}
+
+typedef struct allocation {
+ struct allocation* next;
+ void* ptr;
+ const char* struct_name;
+} allocation;
+static allocation* allocation_ll = NULL;
+
+void* MALLOC(size_t len, const char* struct_name) {
+ void* res = malloc(len);
+ allocation* new_alloc = malloc(sizeof(allocation));
+ new_alloc->ptr = res;
+ new_alloc->struct_name = struct_name;
+ 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);
+ return res;
+}
+
+void FREE(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 (p) { p->next = it->next; } else { allocation_ll = it->next; }
+ DO_ASSERT(mtx_unlock(&allocation_mtx) == thrd_success);
+ DO_ASSERT(it->ptr == ptr);
+ free(it);
+ free(ptr);
+}
+
+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); }
+ DO_ASSERT(allocation_ll == NULL);
+}
+""")
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);
}
+ static native void init(java.lang.Class c, java.lang.Class slicedef);
+
+ 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 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 <rust_types.h>\n")
- out_c.write("#include <lightning.h>\n")
- out_c.write("#include <assert.h>\n")
- out_c.write("#include <string.h>\n")
- out_c.write("#include <stdatomic.h>\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")
+ out_c.write("""
+jmethodID ordinal_meth = NULL;
+jmethodID slicedef_meth = NULL;
+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");
+ DO_ASSERT(ordinal_meth != NULL);
+ slicedef_meth = (*env)->GetMethodID(env, slicedef_class, "<init>", "(JJJ)V");
+ DO_ASSERT(slicedef_meth != NULL);
+ slicedef_cls = (*env)->NewGlobalRef(env, slicedef_class);
+ DO_ASSERT(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); // May be freed by rust, so don't track allocation
+ (*_env)->GetByteArrayRegion (_env, bytes, 0, vec->datalen, vec->data);
+ return (long)vec;
+}
+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<u8> and [u8] need to have been mapped identically");
+_Static_assert(offsetof(LDKCVec_u8Z, data) == offsetof(LDKu8slice, data), "Vec<u8> and [u8] need to have been mapped identically");
+_Static_assert(offsetof(LDKCVec_u8Z, datalen) == offsetof(LDKu8slice, datalen), "Vec<u8> and [u8] need to have been mapped identically");
- 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 <threads.h>\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
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;$")
+ line_indicates_result_regex = re.compile("^ bool result_ok;$")
+ line_indicates_vec_regex = re.compile("^ ([A-Za-z_0-9]*) \*data;$")
+ line_indicates_opaque_regex = re.compile("^ bool is_owned;$")
line_indicates_trait_regex = re.compile("^ ([A-Za-z_0-9]* \*?)\(\*([A-Za-z_0-9]*)\)\((const )?void \*this_arg(.*)\);$")
assert(line_indicates_trait_regex.match(" uintptr_t (*send_data)(void *this_arg, LDKu8slice data, bool resume_read);"))
assert(line_indicates_trait_regex.match(" LDKCVec_MessageSendEventZ (*get_and_clear_pending_msg_events)(const void *this_arg);"))
struct_name_regex = re.compile("^typedef (struct|enum|union) (MUST_USE_STRUCT )?(LDK[A-Za-z_0-9]*) {$")
assert(struct_name_regex.match("typedef struct LDKCVecTempl_u8 {"))
assert(struct_name_regex.match("typedef enum LDKNetwork {"))
+ struct_alias_regex = re.compile("^typedef (LDK[A-Za-z_0-9]*) (LDK[A-Za-z_0-9]*);$")
+ assert(struct_alias_regex.match("typedef LDKCResultTempl_bool__PeerHandleError LDKCResult_boolPeerHandleErrorZ;"))
+ result_templ_structs = set()
+ union_enum_items = {}
for line in in_h:
if in_block_comment:
#out_java.write("\t" + line)
if line.startswith("} "):
field_lines = []
struct_name = None
+ vec_ty = None
obj_lines = cur_block_obj.split("\n")
is_opaque = False
+ is_result = False
is_unitary_enum = False
is_union_enum = False
is_union = False
in_block_comment = False
else:
struct_name_match = struct_name_regex.match(struct_line)
+ vec_ty_match = line_indicates_vec_regex.match(struct_line)
if struct_name_match is not None:
struct_name = struct_name_match.group(3)
if struct_name_match.group(1) == "enum":
is_union = True
if line_indicates_opaque_regex.match(struct_line):
is_opaque = True
+ elif line_indicates_result_regex.match(struct_line):
+ is_result = True
+ elif vec_ty_match is not None and struct_name.startswith("LDKCVecTempl_"):
+ vec_ty = vec_ty_match.group(1)
trait_fn_match = line_indicates_trait_regex.match(struct_line)
if trait_fn_match is not None:
trait_fn_lines.append(trait_fn_match)
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 is_result 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 is_result 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 is_result 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 is_result 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 is_result or vec_ty is not None))
+ assert(not is_result 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 is_result))
+
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):
+ out_java.write("\tpublic static native long " + struct_name + "_optional_none();\n")
+ out_c.write("JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1optional_1none (JNIEnv * env, jclass _a) {\n")
+ out_c.write("\t" + struct_name + " *ret = MALLOC(sizeof(" + struct_name + "), \"" + struct_name + "\");\n")
+ out_c.write("\tret->inner = NULL;\n")
+ out_c.write("\treturn (long)ret;\n")
+ out_c.write("}\n")
+ elif is_result:
+ result_templ_structs.add(struct_name)
+ elif vec_ty is not None:
+ out_java.write("\tpublic static native VecOrSliceDef " + struct_name + "_arr_info(long vec_ptr);\n")
+ out_c.write("JNIEXPORT jobject JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1arr_1info(JNIEnv *env, jclass _b, jlong ptr) {\n")
+ out_c.write("\t" + struct_name + " *vec = (" + struct_name + "*)ptr;\n")
+ out_c.write("\treturn (*env)->NewObject(env, slicedef_cls, slicedef_meth, (long)vec->data, (long)vec->datalen, sizeof(" + vec_ty + "));\n")
+ out_c.write("}\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:
+ tag_field_lines = union_enum_items[struct_name]["field_lines"]
+ init_meth_jty_strs = {}
+ for idx, struct_line in enumerate(tag_field_lines):
if idx == 0:
- out_java.write("\tpublic enum " + struct_name + " {\n")
- elif idx == len(field_lines) - 3:
+ 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(field_lines) - 2:
+ elif idx == len(tag_field_lines) - 2:
+ out_java.write("\t\tstatic native void init();\n")
out_java.write("\t}\n")
- elif idx == len(field_lines) - 1:
+ elif idx == len(tag_field_lines) - 1:
assert(struct_line == "")
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")
+ var_name = struct_line.strip(' ,')[len(struct_name) + 1:]
+ out_java.write("\t\tpublic final static class " + var_name + " extends " + struct_name + " {\n")
+ out_c.write("jclass " + struct_name + "_" + var_name + "_class = NULL;\n")
+ out_c.write("jmethodID " + struct_name + "_" + var_name + "_meth = NULL;\n")
+ init_meth_jty_str = ""
+ init_meth_params = ""
+ init_meth_body = ""
+ if "LDK" + var_name in union_enum_items[struct_name]:
+ enum_var_lines = union_enum_items[struct_name]["LDK" + var_name]
+ for idx, field in enumerate(enum_var_lines):
+ if idx != 0 and idx < len(enum_var_lines) - 2:
+ field_ty = java_c_types(field.strip(' ;'), None)
+ out_java.write("\t\t\tpublic " + field_ty.java_ty + " " + field_ty.var_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.var_name
+ init_meth_body = init_meth_body + "this." + field_ty.var_name + " = " + field_ty.var_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")
+ init_meth_jty_strs[var_name] = init_meth_jty_str
+ 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 + "$" + var_name + ";\"));\n")
+ out_c.write("\tDO_ASSERT(" + struct_name + "_" + var_name + "_class != NULL);\n")
+ out_c.write("\t" + struct_name + "_" + var_name + "_meth = (*env)->GetMethodID(env, " + struct_name + "_" + var_name + "_class, \"<init>\", \"(" + init_meth_jty_strs[var_name] + ")V\");\n")
+ out_c.write("\tDO_ASSERT(" + struct_name + "_" + var_name + "_meth != NULL);\n")
out_c.write("}\n")
-
- ord_v = 0
- out_c.write("static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\n")
- out_c.write("\t// TODO: This is pretty inefficient, we really need to cache the field IDs and class\n")
- out_c.write("\tjclass enum_class = (*env)->FindClass(env, \"Lorg/ldk/impl/bindings$" + 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_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")
+ out_c.write("\t\t\treturn (*env)->NewObject(env, " + struct_name + "_" + var_name + "_class, " + struct_name + "_" + var_name + "_meth")
+ if "LDK" + var_name in union_enum_items[struct_name]:
+ enum_var_lines = union_enum_items[struct_name]["LDK" + var_name]
+ out_c.write(",\n\t\t\t\t")
+ for idx, field in enumerate(enum_var_lines):
+ if idx != 0 and idx < len(enum_var_lines) - 2:
+ field_ty = java_c_types(field.strip(' ;'), None)
+ if idx >= 2:
+ out_c.write(", ")
+ if field_ty.is_ptr:
+ out_c.write("(long)")
+ elif field_ty.passed_as_ptr or field_ty.arr_len is not None:
+ out_c.write("(long)&")
+ out_c.write("obj->" + camel_to_snake(var_name) + "." + field_ty.var_name)
+ out_c.write("\n\t\t\t")
+ out_c.write(");\n")
+ out_c.write("\t\tdefault: abort();\n")
+ out_c.write("\t}\n}\n")
+ elif is_unitary_enum:
+ with open(sys.argv[3] + "/" + struct_name + ".java", "w") as out_java_enum:
+ out_java_enum.write("package org.ldk.enums;\n\n")
+ 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_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")
+ 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("\tabort();\n")
+ out_c.write("}\n")
+
+ ord_v = 0
+ out_c.write("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(",")
+ out_c.write("static jfieldID " + struct_name + "_" + variant + " = NULL;\n")
+ out_c.write("JNIEXPORT void JNICALL Java_org_ldk_enums_" + struct_name.replace("_", "_1") + "_init (JNIEnv * env, jclass clz) {\n")
+ out_c.write("\t" + struct_name + "_class = (*env)->NewGlobalRef(env, clz);\n")
+ out_c.write("\tDO_ASSERT(" + 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(",")
+ out_c.write("\t" + struct_name + "_" + variant + " = (*env)->GetStaticFieldID(env, " + struct_name + "_class, \"" + variant + "\", \"Lorg/ldk/enums/" + struct_name + ";\");\n")
+ out_c.write("\tDO_ASSERT(" + struct_name + "_" + variant + " != NULL);\n")
+ out_c.write("}\n")
+ out_c.write("static inline jclass " + struct_name + "_to_java(JNIEnv *env, " + struct_name + " val) {\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\treturn (*env)->GetStaticObjectField(env, " + struct_name + "_class, " + struct_name + "_" + variant + ");\n")
+ ord_v = ord_v + 1
+ out_c.write("\t\tdefault: abort();\n")
+ out_c.write("\t}\n")
+ out_c.write("}\n\n")
elif len(trait_fn_lines) > 0:
trait_structs.add(struct_name)
map_trait(struct_name, field_var_lines, trait_fn_lines)
elif line.startswith("typedef union "):
cur_block_obj = line
elif line.startswith("typedef "):
+ alias_match = struct_alias_regex.match(line)
+ if alias_match.group(1) in result_templ_structs:
+ out_java.write("\tpublic static native boolean " + alias_match.group(2) + "_result_ok(long arg);\n")
+ out_java.write("\tpublic static native long " + alias_match.group(2) + "_get_inner(long arg);\n")
+ out_c.write("JNIEXPORT jboolean JNICALL Java_org_ldk_impl_bindings_" + alias_match.group(2).replace("_", "_1") + "_1result_1ok (JNIEnv * env, jclass _a, jlong arg) {\n")
+ out_c.write("\treturn ((" + alias_match.group(2) + "*)arg)->result_ok;\n")
+ out_c.write("}\n")
+ out_c.write("JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_" + alias_match.group(2).replace("_", "_1") + "_1get_1inner (JNIEnv * env, jclass _a, jlong arg) {\n")
+ out_c.write("\tif (((" + alias_match.group(2) + "*)arg)->result_ok) {\n")
+ out_c.write("\t\treturn (long)((" + alias_match.group(2) + "*)arg)->contents.result;\n")
+ out_c.write("\t} else {\n")
+ out_c.write("\t\treturn (long)((" + alias_match.group(2) + "*)arg)->contents.err;\n")
+ out_c.write("\t}\n}\n")
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
projects / ldk-java / blobdiff