Handle methods taking non-ref self by using standard conversion
[ldk-java] / java_strings.py
index 1987c10e58db6d3915cdf7e2ba7f8fe1aafb1a2f..223b544d440b32f6427d0a77cf394eb4ed04420b 100644 (file)
@@ -126,7 +126,7 @@ void __attribute__((constructor)) spawn_stderr_redirection() {
 
         if not DEBUG:
             self.c_file_pfx = self.c_file_pfx + """#define MALLOC(a, _) malloc(a)
-#define FREE(p) if ((long)(p) > 1024) { free(p); }
+#define FREE(p) if ((uint64_t)(p) > 1024) { free(p); }
 #define DO_ASSERT(a) (void)(a)
 #define CHECK(a)
 """
@@ -256,7 +256,7 @@ static void alloc_freed(void* 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
+       if ((uint64_t)ptr < 1024) return; // Rust loves to create pointers to the NULL page for dummys
        alloc_freed(ptr);
        __real_free(ptr);
 }
@@ -345,14 +345,14 @@ JNIEXPORT int64_t impl_bindings_bytes_1to_1u8_1vec (JNIEnv * env, jclass _b, jby
        vec->datalen = (*env)->GetArrayLength(env, bytes);
        vec->data = (uint8_t*)MALLOC(vec->datalen, "LDKCVec_u8Z Bytes");
        (*env)->GetByteArrayRegion (env, bytes, 0, vec->datalen, vec->data);
-       return (long)vec;
+       return (uint64_t)vec;
 }
 JNIEXPORT jbyteArray JNICALL Java_org_ldk_impl_bindings_txpointer_1get_1buffer (JNIEnv * env, jclass _b, jlong ptr) {
        LDKTransaction *txdata = (LDKTransaction*)ptr;
        LDKu8slice slice;
        slice.data = txdata->data;
        slice.datalen = txdata->datalen;
-       return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (long)&slice);
+       return Java_org_ldk_impl_bindings_get_1u8_1slice_1bytes(env, _b, (uint64_t)&slice);
 }
 JNIEXPORT int64_t JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data (JNIEnv * env, jclass _b, jbyteArray bytes) {
        LDKTransaction *txdata = (LDKTransaction*)MALLOC(sizeof(LDKTransaction), "LDKTransaction");
@@ -360,7 +360,7 @@ JNIEXPORT int64_t JNICALL Java_org_ldk_impl_bindings_new_1txpointer_1copy_1data
        txdata->data = (uint8_t*)MALLOC(txdata->datalen, "Tx Data Bytes");
        txdata->data_is_owned = false;
        (*env)->GetByteArrayRegion (env, bytes, 0, txdata->datalen, txdata->data);
-       return (long)txdata;
+       return (uint64_t)txdata;
 }
 JNIEXPORT void JNICALL Java_org_ldk_impl_bindings_txpointer_1free (JNIEnv * env, jclass _b, jlong ptr) {
        LDKTransaction *tx = (LDKTransaction*)ptr;
@@ -375,7 +375,7 @@ JNIEXPORT jlong JNICALL Java_org_ldk_impl_bindings_vec_1slice_1len (JNIEnv * env
        _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;
+       return (uint64_t)vec->datalen;
 }
 JNIEXPORT int64_t 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
@@ -386,7 +386,7 @@ JNIEXPORT int64_t JNICALL Java_org_ldk_impl_bindings_new_1empty_1slice_1vec (JNI
        LDKCVec_u8Z *vec = (LDKCVec_u8Z*)MALLOC(sizeof(LDKCVec_u8Z), "Empty LDKCVec");
        vec->data = NULL;
        vec->datalen = 0;
-       return (long)vec;
+       return (uint64_t)vec;
 }
 
 // We assume that CVec_u8Z and u8slice are the same size and layout (and thus pointers to the two can be mixed)
@@ -453,6 +453,21 @@ import java.util.Arrays;
         self.ptr_arr = "jobjectArray"
         self.get_native_arr_len_call = ("(*env)->GetArrayLength(env, ", ")")
 
+    def construct_jenv(self):
+        res =  "JNIEnv *env;\n"
+        res += "jint get_jenv_res = (*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_6);\n"
+        res += "if (get_jenv_res == JNI_EDETACHED) {\n"
+        res += "\tDO_ASSERT((*j_calls->vm)->AttachCurrentThread(j_calls->vm, (void**)&env, NULL) == JNI_OK);\n"
+        res += "} else {\n"
+        res += "\tDO_ASSERT(get_jenv_res == JNI_OK);\n"
+        res += "}\n"
+        return res
+    def deconstruct_jenv(self):
+        res = "if (get_jenv_res == JNI_EDETACHED) {\n"
+        res += "\tDO_ASSERT((*j_calls->vm)->DetachCurrentThread(j_calls->vm) == JNI_OK);\n"
+        res += "}\n"
+        return res
+
     def release_native_arr_ptr_call(self, ty_info, arr_var, arr_ptr_var):
         if ty_info.subty is None or not ty_info.subty.c_ty.endswith("Array"):
             return "(*env)->ReleasePrimitiveArrayCritical(env, " + arr_var + ", " + arr_ptr_var + ", 0)"
@@ -761,9 +776,9 @@ import java.util.Arrays;
                 out_c = out_c + "static void " + struct_name + "_JCalls_free(void* this_arg) {\n"
                 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
                 out_c = out_c + "\tif (atomic_fetch_sub_explicit(&j_calls->refcnt, 1, memory_order_acquire) == 1) {\n"
-                out_c = out_c + "\t\tJNIEnv *env;\n"
-                out_c = out_c + "\t\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_6) == JNI_OK);\n"
+                out_c += "\t\t" + self.construct_jenv().replace("\n", "\n\t\t").strip() + "\n"
                 out_c = out_c + "\t\t(*env)->DeleteWeakGlobalRef(env, j_calls->o);\n"
+                out_c += "\t\t" + self.deconstruct_jenv().replace("\n", "\n\t\t").strip() + "\n"
                 out_c = out_c + "\t\tFREE(j_calls);\n"
                 out_c = out_c + "\t}\n}\n"
 
@@ -781,8 +796,7 @@ import java.util.Arrays;
 
                 out_c = out_c + ") {\n"
                 out_c = out_c + "\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n"
-                out_c = out_c + "\tJNIEnv *env;\n"
-                out_c = out_c + "\tDO_ASSERT((*j_calls->vm)->GetEnv(j_calls->vm, (void**)&env, JNI_VERSION_1_6) == JNI_OK);\n"
+                out_c += "\t" + self.construct_jenv().replace("\n", "\n\t").strip() + "\n"
 
                 for arg_info in fn_line.args_ty:
                     if arg_info.ret_conv is not None:
@@ -793,8 +807,10 @@ import java.util.Arrays;
                 out_c = out_c + "\tjobject obj = (*env)->NewLocalRef(env, j_calls->o);\n\tCHECK(obj != NULL);\n"
                 if fn_line.ret_ty_info.c_ty.endswith("Array"):
                     out_c = out_c + "\t" + fn_line.ret_ty_info.c_ty + " ret = (*env)->CallObjectMethod(env, obj, j_calls->" + fn_line.fn_name + "_meth"
+                elif fn_line.ret_ty_info.c_ty == "void":
+                    out_c += "\t(*env)->Call" + fn_line.ret_ty_info.java_ty.title() + "Method(env, obj, j_calls->" + fn_line.fn_name + "_meth"
                 elif not fn_line.ret_ty_info.passed_as_ptr:
-                    out_c = out_c + "\treturn (*env)->Call" + fn_line.ret_ty_info.java_ty.title() + "Method(env, obj, j_calls->" + fn_line.fn_name + "_meth"
+                    out_c += "\t" + fn_line.ret_ty_info.c_ty + " ret = (*env)->Call" + fn_line.ret_ty_info.java_ty.title() + "Method(env, obj, j_calls->" + fn_line.fn_name + "_meth"
                 else:
                     out_c = out_c + "\t" + fn_line.ret_ty_info.rust_obj + "* ret = (" + fn_line.ret_ty_info.rust_obj + "*)(*env)->CallLongMethod(env, obj, j_calls->" + fn_line.fn_name + "_meth"
 
@@ -805,7 +821,13 @@ import java.util.Arrays;
                         out_c = out_c + ", " + arg_info.arg_name
                 out_c = out_c + ");\n"
                 if fn_line.ret_ty_info.arg_conv is not None:
-                    out_c = out_c + "\t" + fn_line.ret_ty_info.arg_conv.replace("\n", "\n\t") + "\n\treturn " + fn_line.ret_ty_info.arg_conv_name + ";\n"
+                    out_c += "\t" + fn_line.ret_ty_info.arg_conv.replace("\n", "\n\t") + "\n"
+                    out_c += "\t" + self.deconstruct_jenv().replace("\n", "\n\t").strip() + "\n"
+                    out_c += "\treturn " + fn_line.ret_ty_info.arg_conv_name + ";\n"
+                else:
+                    out_c += "\t" + self.deconstruct_jenv().replace("\n", "\n\t").strip() + "\n"
+                    if not fn_line.ret_ty_info.passed_as_ptr and fn_line.ret_ty_info.c_ty != "void":
+                        out_c += "\treturn ret;\n"
 
                 out_c = out_c + "}\n"
 
@@ -889,7 +911,7 @@ import java.util.Arrays;
             else:
                 out_c = out_c + ", " + var[1]
         out_c = out_c + ");\n"
-        out_c = out_c + "\treturn (long)res_ptr;\n"
+        out_c = out_c + "\treturn (uint64_t)res_ptr;\n"
         out_c = out_c + "}\n"
 
         return (out_java, out_java_trait, out_c)
@@ -1012,7 +1034,7 @@ import java.util.Arrays;
         return out_opaque_struct_human
 
 
-    def map_function(self, argument_types, c_call_string, method_name, return_type_info, struct_meth, default_constructor_args, takes_self, args_known, type_mapping_generator, doc_comment):
+    def map_function(self, argument_types, c_call_string, method_name, return_type_info, struct_meth, default_constructor_args, takes_self, takes_self_as_ref, args_known, type_mapping_generator, doc_comment):
         out_java = ""
         out_c = ""
         out_java_struct = None
@@ -1043,14 +1065,18 @@ import java.util.Arrays;
             if doc_comment is not None:
                 out_java_struct += "\t/**\n\t * " + doc_comment.replace("\n", "\n\t * ") + "\n\t */\n"
             if not takes_self:
-                out_java_struct += (
-                    "\tpublic static " + return_type_info.java_hu_ty + " constructor_" + meth_n + "(")
+                if meth_n == "new":
+                    out_java_struct += "\tpublic static " + return_type_info.java_hu_ty + " of("
+                elif meth_n == "default":
+                    out_java_struct += "\tpublic static " + return_type_info.java_hu_ty + " with_default("
+                else:
+                    out_java_struct += "\tpublic static " + return_type_info.java_hu_ty + " " + meth_n + "("
             else:
                 out_java_struct += ("\tpublic " + return_type_info.java_hu_ty + " " + meth_n + "(")
             for idx, arg in enumerate(argument_types):
                 if idx != 0:
                     if not takes_self or idx > 1:
-                        out_java_struct += (", ")
+                        out_java_struct += ", "
                 elif takes_self:
                     continue
                 if arg.java_ty != "void":
@@ -1151,6 +1177,8 @@ import java.util.Arrays;
                     else:
                         out_java_struct += ("\t\t" + info.from_hu_conv[1].replace("\n", "\n\t\t") + ";\n")
 
+            if takes_self and not takes_self_as_ref:
+                out_java_struct += "\t\t" + argument_types[0].from_hu_conv[1].replace("\n", "\n\t\t").replace("this_arg", "this") + ";\n"
             if return_type_info.to_hu_conv_name is not None:
                 out_java_struct += ("\t\treturn " + return_type_info.to_hu_conv_name + ";\n")
             elif return_type_info.java_ty != "void" and return_type_info.rust_obj != "LDK" + struct_meth: