X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=gen_type_mapping.py;h=cba51d51bfddf31ead763cb3d9bec6d7f1a2de30;hb=e9c2970adecaa14b3e83e11eb160a7bcbdae20da;hp=aebd7d015e7cc06b2981152b0fbb5ba544b11008;hpb=1668e21d15257d59a739a188a6e85d6e57f8f2cc;p=ldk-java diff --git a/gen_type_mapping.py b/gen_type_mapping.py index aebd7d01..cba51d51 100644 --- a/gen_type_mapping.py +++ b/gen_type_mapping.py @@ -206,6 +206,7 @@ class TypeMappingGenerator: ty_info.var_name = "ret" if ty_info.rust_obj in self.opaque_structs: + from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")") opaque_arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv;\n" opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.inner = (void*)(" + ty_info.var_name + " & (~1));\n" if ty_info.is_ptr and holds_ref: @@ -217,7 +218,16 @@ class TypeMappingGenerator: # TODO: This is a bit too naive, even with the checks above, we really need to know if rust wants a ref or not, not just if its pass as a ptr. opaque_arg_conv = opaque_arg_conv + "\n" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&" + ty_info.var_name + "_conv);" elif ty_info.passed_as_ptr: - opaque_arg_conv = opaque_arg_conv + "\n// Warning: we may need a move here but no clone is available for " + ty_info.rust_obj + opaque_arg_conv = opaque_arg_conv + "\n// Warning: we need a move here but no clone is available for " + ty_info.rust_obj + # TODO: Once we support features cloning (which just isn't in C yet), we can make this a compile error instead! + from_hu_conv = (from_hu_conv[0], from_hu_conv[1] + ";\n" + + "// Due to rust's strict-ownership memory model, in some cases we need to \"move\"\n" + + "// an object to pass exclusive ownership to the function being called.\n" + + "// In most cases, we avoid this being visible in GC'd languages by cloning the object\n" + + "// at the FFI layer, creating a new object which Rust can claim ownership of\n" + + "// However, in some cases (eg here), there is no way to clone an object, and thus\n" + + "// we actually have to pass full ownership to Rust.\n" + + "// Thus, after this call, " + ty_info.var_name + " is reset to null and is now a dummy object.\n" + ty_info.var_name + ".ptr = 0") opaque_ret_conv_suf = ";\n" if not holds_ref and ty_info.is_ptr and (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns: # is_ptr, not holds_ref implies passing a pointed-to value to java, which needs copied @@ -242,15 +252,15 @@ class TypeMappingGenerator: ret_conv_name = ty_info.var_name + "_ref", to_hu_conv = self.consts.to_hu_conv_templates['ptr'].replace('{human_type}', ty_info.java_hu_ty).replace('{var_name}', ty_info.var_name), to_hu_conv_name = ty_info.var_name + "_hu_conv", - from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")")) + from_hu_conv = from_hu_conv) else: return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, arg_conv = opaque_arg_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = ", opaque_ret_conv_suf), ret_conv_name = ty_info.var_name + "_ref", - to_hu_conv = self.consts.to_hu_conv_templates['default'].replace('{human_type}', ty_info.java_hu_ty).replace('{var_name}', ty_info.var_name), + to_hu_conv = self.consts.to_hu_conv_templates['default'].replace('{human_type}', ty_info.java_hu_ty).replace('{var_name}', ty_info.var_name) + "\n" + ty_info.var_name + "_hu_conv.ptrs_to.add(this);", to_hu_conv_name = ty_info.var_name + "_hu_conv", - from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")")) + from_hu_conv = from_hu_conv) if not ty_info.is_ptr: if ty_info.rust_obj in self.unitary_enums: @@ -333,7 +343,6 @@ class TypeMappingGenerator: from_hu_conv = "bindings." + self.tuple_types[ty_info.rust_obj][1].replace("LDK", "") + "_new(" to_hu_conv_pfx = "" to_hu_conv_sfx = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " + ty_info.java_hu_ty + "(" - clone_ret_str = "" for idx, conv in enumerate(self.tuple_types[ty_info.rust_obj][0]): if idx != 0: to_hu_conv_sfx = to_hu_conv_sfx + ", " @@ -359,17 +368,8 @@ class TypeMappingGenerator: else: from_hu_conv = from_hu_conv + ty_info.var_name + "." + chr(idx + ord("a")) - if conv.is_native_primitive: - pass - elif (conv_map.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns: - accessor = ty_info.var_name + "_ref->" + chr(idx + ord("a")) - clone_ret_str = clone_ret_str + "\n" + accessor + " = " + conv_map.rust_obj.replace("LDK", "") + "_clone(&" + accessor + ");" - else: - clone_ret_str = clone_ret_str + "\n// Warning: We likely need to clone here, but no _clone fn is available for " + conv_map.java_hu_ty if not ty_info.is_ptr and not holds_ref: ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_ref = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*" + ty_info.var_name + "_ref = ", ";") - if not is_free and (not ty_info.is_ptr and not holds_ref or ty_info.requires_clone == True) and ty_info.requires_clone != False: - ret_conv = (ret_conv[0], ret_conv[1] + clone_ret_str) return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name, arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None, ret_conv = ret_conv,