Drop requires_clone ret_conv cloning in complex enums
[ldk-java] / gen_type_mapping.py
index bf9c78b83458ff9f94b654afcd4603aab5135793..250619d3d2a113941f8c732555ed7c36bb209c78 100644 (file)
@@ -240,6 +240,7 @@ class TypeMappingGenerator:
                     if (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
                         # 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);"
+                        from_hu_conv = (from_hu_conv[0], "")
                     elif ty_info.passed_as_ptr:
                         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!
@@ -268,12 +269,15 @@ class TypeMappingGenerator:
                     opaque_ret_conv_suf = opaque_ret_conv_suf + "\t" + ty_info.var_name + "_ref |= 1;\n"
                     opaque_ret_conv_suf = opaque_ret_conv_suf + "}"
 
+                to_hu_conv_sfx = ""
+                if not ty_info.is_ptr or holds_ref:
+                    to_hu_conv_sfx = "\n" + ty_info.var_name + "_hu_conv.ptrs_to.add(this);"
                 if ty_info.is_ptr:
                     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['ptr'].replace('{human_type}', ty_info.java_hu_ty).replace('{var_name}', ty_info.var_name),
+                        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_sfx,
                         to_hu_conv_name = ty_info.var_name + "_hu_conv",
                         from_hu_conv = from_hu_conv)
                 else:
@@ -281,7 +285,7 @@ class TypeMappingGenerator:
                         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) + "\n" + ty_info.var_name + "_hu_conv.ptrs_to.add(this);",
+                        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_sfx,
                         to_hu_conv_name = ty_info.var_name + "_hu_conv",
                         from_hu_conv = from_hu_conv)
 
@@ -302,7 +306,8 @@ class TypeMappingGenerator:
                         if (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
                             ret_conv = (ret_conv[0] + ty_info.rust_obj.replace("LDK", "") + "_clone(&", ");")
                         else:
-                            ret_conv = (ret_conv[0], "; // Warning: We likely need to clone here, but no clone is available for " + ty_info.rust_obj)
+                            ret_conv = (ret_conv[0], ";\n// Warning: We likely need to clone here, but no clone is available, so we just do it for Java instances")
+                            ret_conv = (ret_conv[0], ret_conv[1] + "" + self.consts.trait_struct_inc_refcnt(ty_info).replace(ty_info.var_name + "_conv", "(*" + ty_info.var_name + "_ret)"))
                     if not is_free:
                         needs_full_clone = 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
                         if needs_full_clone and (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
@@ -332,17 +337,23 @@ class TypeMappingGenerator:
                     # underlying unlike Vecs, and it gives Java more freedom.
                     base_conv = base_conv + "\nFREE((void*)" + ty_info.var_name + ");"
                 if ty_info.rust_obj in self.complex_enums:
+                    if needs_full_clone and (ty_info.rust_obj.replace("LDK", "") + "_clone") not in self.clone_fns:
+                        # We really need a full clone here, but for now we just implement
+                        # a manual clone explicitly for Option<Trait>s
+                        if ty_info.rust_obj.startswith("LDKCOption"):
+                            optional_ty = ty_info.rust_obj[11:-1]
+                            if "LDK" + optional_ty in self.trait_structs:
+                                base_conv += "\nif (" + ty_info.var_name + "_conv.tag == " + ty_info.rust_obj + "_Some) {"
+                                base_conv += "\n\t// Manually implement clone for Java trait instances"
+                                optional_ty_info = self.java_c_types("LDK" + optional_ty + " " + ty_info.var_name, None)
+                                base_conv += self.consts.trait_struct_inc_refcnt(optional_ty_info).\
+                                    replace("\n", "\n\t").replace(ty_info.var_name + "_conv", ty_info.var_name + "_conv.some")
+                                base_conv += "\n}"
                     ret_conv = ("uint64_t " + ty_info.var_name + "_ref = ((uint64_t)&", ") | 1;")
                     if not holds_ref:
                         ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_copy = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n", "")
-                        if ty_info.requires_clone == True: # Set in object array mapping
-                            if (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
-                                ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&", ");\n")
-                            else:
-                                ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", "; // Warning: We likely need to clone here, but no clone is available for " + ty_inf.rust_obj + "\n")
-                        else:
-                            ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", ";\n")
-                        ret_conv = (ret_conv[0], ret_conv[1] + "uint64_t " + ty_info.var_name + "_ref = (uint64_t)" + ty_info.var_name + "_copy;")
+                        ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", "")
+                        ret_conv = (ret_conv[0], ";\nuint64_t " + ty_info.var_name + "_ref = (uint64_t)" + ty_info.var_name + "_copy;")
                     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, ret_conv_name = ty_info.var_name + "_ref",
@@ -362,60 +373,27 @@ class TypeMappingGenerator:
                         to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = " + ty_info.java_hu_ty + ".constr_from_ptr(" + ty_info.var_name + ");",
                         to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + " != null ? " + ty_info.var_name + ".ptr : 0", ""))
                 if ty_info.rust_obj in self.tuple_types:
-                    from_hu_conv_sfx = ""
-                    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 + "("
-                    to_hu_conv_refs = ""
-                    for idx, conv in enumerate(self.tuple_types[ty_info.rust_obj][0]):
-                        if idx != 0:
-                            to_hu_conv_sfx = to_hu_conv_sfx + ", "
-                            from_hu_conv = from_hu_conv + ", "
-                        conv.var_name = ty_info.var_name + "_" + chr(idx + ord("a"))
-                        conv_map = self.map_type_with_info(conv, False, None, is_free, holds_ref)
-                        to_hu_conv_pfx = to_hu_conv_pfx + conv.java_ty + " " + ty_info.var_name + "_" + chr(idx + ord("a")) + " = "
-                        if not conv.is_native_primitive and (conv_map.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns and conv_map.rust_obj == "LDKTxOut":
-                            to_hu_conv_pfx = to_hu_conv_pfx + "bindings." + conv_map.rust_obj.replace("LDK", "") + "_clone("
-                        to_hu_conv_pfx = to_hu_conv_pfx + "bindings." + self.tuple_types[ty_info.rust_obj][1] + "_get_" + chr(idx + ord("a")) + "(" + ty_info.var_name + ")"
-                        if not conv.is_native_primitive and (conv_map.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns and conv_map.rust_obj == "LDKTxOut": # XXX
-                            to_hu_conv_pfx = to_hu_conv_pfx + ")"
-                        to_hu_conv_pfx = to_hu_conv_pfx + ";\n"
-                        if conv_map.to_hu_conv is not None:
-                            to_hu_conv_pfx = to_hu_conv_pfx + conv_map.to_hu_conv + ";\n"
-                            to_hu_conv_sfx = to_hu_conv_sfx + conv_map.to_hu_conv_name
-                            if to_hu_conv_refs is not None:
-                                if conv_map.c_ty.endswith("Array"):
-                                    to_hu_conv_refs = None
-                                else:
-                                    to_hu_conv_refs = to_hu_conv_refs + "\n" + conv_map.to_hu_conv_name + ".ptrs_to.add(" + ty_info.var_name + "_conv);"
-                        else:
-                            to_hu_conv_sfx = to_hu_conv_sfx + ty_info.var_name + "_" + chr(idx + ord("a"))
-                        if conv_map.from_hu_conv is not None:
-                            from_hu_conv = from_hu_conv + conv_map.from_hu_conv[0].replace(ty_info.var_name + "_" + chr(idx + ord("a")), ty_info.var_name + "." + chr(idx + ord("a")))
-                            if conv_map.from_hu_conv[1] != "":
-                                from_hu_conv_sfx = from_hu_conv_sfx + conv_map.from_hu_conv[1].replace(conv.var_name, ty_info.var_name + "." + chr(idx + ord("a")))
-                                if idx != len(self.tuple_types[ty_info.rust_obj][0]) - 1:
-                                    from_hu_conv_sfx += "; "
+                    ret_conv_name = "((uint64_t)" + ty_info.var_name + "_conv)"
+                    if holds_ref:
+                        # If we're trying to return a ref, we have to clone.
+                        # We just blindly assume its implemented and let the compiler fail if its not.
+                        ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_conv = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*" + ty_info.var_name + "_conv = ", ";")
+                        if (ty_info.rust_obj.replace("LDK", "") + "_clone") not in self.clone_fns:
+                            ret_conv = (ret_conv[0], ret_conv[1] + "\n// Warning: we really need to clone here, but no clone is available for " + ty_info.rust_obj)
+                            ret_conv_name += " | 1"
                         else:
-                            from_hu_conv = from_hu_conv + ty_info.var_name + "." + chr(idx + ord("a"))
-
-                    if to_hu_conv_refs is None:
-                        to_hu_conv = to_hu_conv_pfx + to_hu_conv_sfx + ");\n// Warning: We may not free the C tuple object!"
+                            ret_conv = (ret_conv[0], ret_conv[1] + "\n*" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(" + ty_info.var_name + "_conv);")
                     else:
-                        to_hu_conv = to_hu_conv_pfx + to_hu_conv_sfx + ", () -> {\n"
-                        to_hu_conv = to_hu_conv + "\tbindings." + ty_info.rust_obj.replace("LDK", "") + "_free(" + ty_info.var_name + ");\n"
-                        to_hu_conv = to_hu_conv + "});" + to_hu_conv_refs
-                    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 = ", ";")
-                        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,
-                            ret_conv_name = "(uint64_t)" + ty_info.var_name + "_ref",
-                            to_hu_conv = to_hu_conv, to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (from_hu_conv + ")", from_hu_conv_sfx))
+                        ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_conv = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*" + ty_info.var_name + "_conv = ", ";")
+                    if not ty_info.is_ptr or holds_ref:
+                        to_hu_conv_sfx = "\n" + ty_info.var_name + "_hu_conv.ptrs_to.add(this);"
+                    else:
+                        to_hu_conv_sfx = ""
                     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 = ("uint64_t " + ty_info.var_name + "_ref = (uint64_t)(&", ") | 1;"), ret_conv_name = ty_info.var_name + "_ref",
-                        to_hu_conv = to_hu_conv, to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (from_hu_conv + ")", from_hu_conv_sfx))
+                        ret_conv = ret_conv, ret_conv_name = ret_conv_name,
+                        to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");" + to_hu_conv_sfx,
+                        to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + " != null ? " + ty_info.var_name + ".ptr : 0", ""))
 
                 # The manually-defined types - TxOut and u5
                 if ty_info.rust_obj == "LDKu5":
@@ -439,17 +417,19 @@ class TypeMappingGenerator:
                 assert(not is_free)
                 if ty_info.rust_obj in self.complex_enums:
                     ret_conv = ("uint64_t ret_" + ty_info.var_name + " = (uint64_t)", " | 1; // Warning: We should clone here!")
+                    from_hu_sfx = "this.ptrs_to.add(" + ty_info.var_name + ")"
                     if ty_info.rust_obj.replace("LDK", "") + "_clone" in self.clone_fns:
                         ret_conv_pfx = ty_info.rust_obj + " *ret_" + ty_info.var_name + " = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + " ret conversion\");\n"
                         ret_conv_pfx += "*ret_" + ty_info.var_name + " = " + ty_info.rust_obj.replace("LDK", "") + "_clone("
                         ret_conv = (ret_conv_pfx, ");")
+                        from_hu_sfx = ""
                     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", arg_conv_cleanup = None,
                         ret_conv = ret_conv, ret_conv_name = "(uint64_t)ret_" + ty_info.var_name,
                         to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_hu_conv = " + ty_info.java_hu_ty + ".constr_from_ptr(" + 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 = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", from_hu_sfx))
                 elif ty_info.rust_obj in self.trait_structs:
                     if ty_info.nonnull_ptr:
                         arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)(((uint64_t)" + ty_info.var_name + ") & ~1);"
@@ -474,7 +454,7 @@ class TypeMappingGenerator:
                             ret_conv_name = "(uint64_t)" + ty_info.var_name + "_clone",
                             to_hu_conv = ty_info.java_hu_ty + " ret_hu_conv = new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");\nret_hu_conv.ptrs_to.add(this);",
                             to_hu_conv_name = "ret_hu_conv",
-                            from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
+                            from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", ""))
                     else:
                         return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
                             arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = None,