1 from bindingstypes import ConvInfo
3 class TypeMappingGenerator:
5 def __init__(self, java_c_types, consts, opaque_structs, clone_fns, unitary_enums, trait_structs, complex_enums, result_types, tuple_types):
6 # trick our way around circular imports
7 self.java_c_types = java_c_types
9 self.opaque_structs = opaque_structs
10 self.clone_fns = clone_fns
11 self.unitary_enums = unitary_enums
12 self.trait_structs = trait_structs
13 self.complex_enums = complex_enums
14 self.result_types = result_types
15 self.tuple_types = tuple_types
17 def map_type(self, fn_arg, print_void, ret_arr_len, is_free, holds_ref):
18 ty_info = self.java_c_types(fn_arg, ret_arr_len)
19 mapped_info = self.map_type_with_info(ty_info, print_void, ret_arr_len, is_free, holds_ref, False)
22 def map_nullable_type(self, fn_arg, print_void, ret_arr_len, is_free, holds_ref):
23 ty_info = self.java_c_types(fn_arg, ret_arr_len)
24 mapped_info = self.map_type_with_info(ty_info, print_void, ret_arr_len, is_free, holds_ref, True)
27 def map_type_with_info(self, ty_info, print_void, ret_arr_len, is_free, holds_ref, is_nullable):
28 mapped_info = self._do_map_type_with_info(ty_info, print_void, ret_arr_len, is_free, holds_ref, is_nullable)
30 mapped_info.nullable = True
33 def _do_map_type_with_info(self, ty_info, print_void, ret_arr_len, is_free, holds_ref, is_nullable):
34 if ty_info.c_ty == "void":
36 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
37 arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None,
38 ret_conv = None, ret_conv_name = None, to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
39 if ty_info.c_ty.endswith("Array"):
40 arr_len = ty_info.arr_len
41 if arr_len is not None:
42 arr_name = ty_info.var_name
46 if ty_info.c_ty == "int8_tArray" or ty_info.c_ty == "int16_tArray":
47 (set_pfx, set_sfx) = self.consts.set_native_arr_contents(arr_name + "_arr", arr_len, ty_info)
48 ret_conv = (ty_info.c_ty + " " + arr_name + "_arr = " + self.consts.create_native_arr_call(arr_len, ty_info) + ";\n" + set_pfx, "")
49 arg_conv_cleanup = None
50 if not arr_len.isdigit():
51 arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n"
52 arg_conv = arg_conv + arr_name + "_ref." + arr_len + " = " + self.consts.get_native_arr_len_call[0] + arr_name + self.consts.get_native_arr_len_call[1] + ";\n"
53 if (not ty_info.is_ptr or not holds_ref) and (ty_info.rust_obj != "LDKu8slice" and ty_info.rust_obj != "LDKu16slice"):
54 arg_conv = arg_conv + arr_name + "_ref." + ty_info.arr_access + " = MALLOC(" + arr_name + "_ref." + arr_len + ", \"" + ty_info.rust_obj + " Bytes\");\n"
55 arg_conv = arg_conv + self.consts.get_native_arr_contents(arr_name, arr_name + "_ref." + ty_info.arr_access, arr_name + "_ref." + arr_len, ty_info, True) + ";"
57 arg_conv = arg_conv + arr_name + "_ref." + ty_info.arr_access + " = " + self.consts.get_native_arr_contents(arr_name, "NO_DEST", arr_name + "_ref." + arr_len, ty_info, False) + ";"
58 arg_conv_cleanup = self.consts.cleanup_native_arr_ref_contents(arr_name, arr_name + "_ref." + ty_info.arr_access, arr_name + "_ref." + arr_len, ty_info)
59 if ty_info.rust_obj == "LDKTransaction" or ty_info.rust_obj == "LDKWitness":
60 arg_conv = arg_conv + "\n" + arr_name + "_ref.data_is_owned = " + str(holds_ref).lower() + ";"
61 ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "")
62 ret_conv = (ret_conv[0], ";\n" + ty_info.c_ty + " " + arr_name + "_arr = " + self.consts.create_native_arr_call(arr_name + "_var." + arr_len, ty_info) + ";\n")
63 (pfx, sfx) = self.consts.set_native_arr_contents(arr_name + "_arr", arr_name + "_var." + arr_len, ty_info)
64 ret_conv = (ret_conv[0], ret_conv[1] + pfx + arr_name + "_var." + ty_info.arr_access + sfx + ";")
65 if not holds_ref and (ty_info.rust_obj != "LDKu8slice" and ty_info.rust_obj != "LDKu16slice"):
66 ret_conv = (ret_conv[0], ret_conv[1] + "\n" + ty_info.rust_obj.replace("LDK", "") + "_free(" + arr_name + "_var);")
67 from_hu_conv = self.consts.primitive_arr_from_hu(ty_info, None, arr_name)
68 to_hu_conv = self.consts.primitive_arr_to_hu(ty_info, None, arr_name, arr_name + "_conv")
69 elif ty_info.rust_obj is not None:
70 arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n"
71 arg_conv = arg_conv + "CHECK(" + self.consts.get_native_arr_len_call[0] + arr_name + self.consts.get_native_arr_len_call[1] + " == " + arr_len + ");\n"
72 arg_conv = arg_conv + self.consts.get_native_arr_contents(arr_name, arr_name + "_ref." + ty_info.arr_access, arr_len, ty_info, True) + ";"
73 ret_conv = (ret_conv[0], "." + ty_info.arr_access + set_sfx + ";")
74 from_hu_conv = self.consts.primitive_arr_from_hu(ty_info, arr_len, arr_name)
75 to_hu_conv = self.consts.primitive_arr_to_hu(ty_info, None, arr_name, arr_name + "_conv")
77 # Note that we just blindly assume we should be using unsigned integers here.
78 arg_conv = "u" + ty_info.subty.c_ty + " " + arr_name + "_arr[" + arr_len + "];\n"
79 arg_conv = arg_conv + "CHECK(" + self.consts.get_native_arr_len_call[0] + arr_name + self.consts.get_native_arr_len_call[1] + " == " + arr_len + ");\n"
80 arg_conv = arg_conv + self.consts.get_native_arr_contents(arr_name, arr_name + "_arr", arr_len, ty_info, True) + ";\n"
81 arg_conv = arg_conv + "u" + ty_info.subty.c_ty + " (*" + arr_name + "_ref)[" + arr_len + "] = &" + arr_name + "_arr;"
82 ret_conv = (ret_conv[0] + "*", set_sfx + ";")
83 from_hu_conv = self.consts.primitive_arr_from_hu(ty_info, arr_len, arr_name)
84 to_hu_conv = self.consts.primitive_arr_to_hu(ty_info, None, arr_name, arr_name + "_conv")
85 to_hu_conv_name = None
86 if to_hu_conv is not None:
87 to_hu_conv_name = arr_name + "_conv"
88 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
89 arg_conv = arg_conv, arg_conv_name = arr_name + "_ref", arg_conv_cleanup = arg_conv_cleanup,
90 ret_conv = ret_conv, ret_conv_name = arr_name + "_arr",
91 to_hu_conv = to_hu_conv, to_hu_conv_name = to_hu_conv_name,
92 from_hu_conv = from_hu_conv)
94 assert not arr_len.isdigit() # fixed length arrays not implemented
95 assert ty_info.java_hu_ty[len(ty_info.java_hu_ty) - 2:] == "[]"
98 conv_name = arr_name + "_conv_" + str(len(ty_info.java_hu_ty))
99 idxc = chr(ord('a') + (len(ty_info.java_hu_ty) % 26))
100 ty_info.subty.var_name = conv_name
101 #XXX: We'd really prefer to only ever set to False, avoiding lots of clone, but need smarter free logic
102 #if ty_info.is_ptr or holds_ref:
103 # ty_info.subty.requires_clone = False
104 ty_info.subty.requires_clone = not ty_info.is_ptr or not holds_ref
105 if not ty_info.subty.is_native_primitive and ty_info.subty.rust_obj == "LDKChannelMonitor":
106 # We take a Vec of references to ChannelMonitors as input to ChannelManagerReadArgs, if we clone them,
107 # we end up freeing the clones after creating the ChannelManagerReadArgs before calling the read
108 # function itself, resulting in a segfault. Thus, we manually check and ensure we don't clone for
109 # ChannelMonitors inside of vecs.
110 ty_info.subty.requires_clone = False
111 subty = self.map_type_with_info(ty_info.subty, False, None, is_free, holds_ref, False)
112 arg_conv = ty_info.rust_obj + " " + arr_name + "_constr;\n"
116 arg_conv += ty_info.rust_obj + " *" + arr_name + "_ptr = NULL;\n"
117 arg_conv += "if (" + self.consts.is_arr_some_check[0] + arr_name + self.consts.is_arr_some_check[1] + ") {\n"
118 arg_conv += pf + arr_name + "_constr." + arr_len + " = " + self.consts.get_native_arr_len_call[0] + arr_name + self.consts.get_native_arr_len_call[1] + ";\n"
119 arg_conv += pf + "if (" + arr_name + "_constr." + arr_len + " > 0)\n"
120 if subty.is_native_primitive:
123 szof = subty.rust_obj
124 arg_conv += pf + "\t" + arr_name + "_constr." + ty_info.arr_access + " = MALLOC(" + arr_name + "_constr." + arr_len + " * sizeof(" + szof + "), \"" + ty_info.rust_obj + " Elements\");\n"
125 arg_conv += pf + "else\n"
126 arg_conv += pf + "\t" + arr_name + "_constr." + ty_info.arr_access + " = NULL;\n"
127 get_arr = self.consts.get_native_arr_contents(arr_name, "NO_DEST", arr_name + "_constr." + arr_len, ty_info, False)
129 arg_conv += pf + subty.c_ty + "* " + arr_name + "_vals = " + get_arr + ";\n"
130 arg_conv += pf + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_constr." + arr_len + "; " + idxc + "++) {\n"
132 arg_conv += pf + "\t" + subty.c_ty + " " + conv_name + " = " + arr_name + "_vals[" + idxc + "];"
133 if subty.arg_conv is not None:
134 arg_conv += "\n\t" + pf + subty.arg_conv.replace("\n", "\n\t" + pf)
136 arg_conv += pf + "\t" + subty.c_ty + " " + conv_name + " = " + self.consts.get_native_arr_elem(arr_name, idxc, ty_info) + ";\n"
137 arg_conv += pf + "\t" + subty.arg_conv.replace("\n", "\n\t" + pf)
138 arg_conv += "\n\t" + pf + arr_name + "_constr." + ty_info.arr_access + "[" + idxc + "] = " + subty.arg_conv_name + ";\n" + pf + "}"
140 cleanup = self.consts.cleanup_native_arr_ref_contents(arr_name, arr_name + "_vals", arr_name + "_constr." + arr_len, ty_info)
141 if cleanup is not None:
142 arg_conv += "\n" + pf + cleanup + ";"
144 arg_conv_name = arr_name + "_ptr"
146 arg_conv_name = arr_name + "_constr"
147 arg_conv_cleanup = None
149 arg_conv_cleanup = "if (" + arr_name + "_ptr != NULL) { FREE(" + arr_name + "_constr." + ty_info.arr_access + "); }"
151 arg_conv += "\n\t" + arr_name + "_ptr = &" + arr_name + "_constr;\n}"
154 ret_conv = (ty_info.rust_obj + " *" + arr_name + "_var_ptr = ", "")
156 ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "")
157 if subty.ret_conv is None:
158 ret_conv = ("DUMMY", "DUMMY")
160 ret_conv = (ret_conv[0], ";\n" + ty_info.c_ty + " " + arr_name + "_arr = NULL;\n")
163 ret_conv = (ret_conv[0], ret_conv[1] + "if (" + arr_name + " != NULL) {\n")
164 ret_conv = (ret_conv[0], ret_conv[1] + "\t" + ty_info.rust_obj + " " + arr_name + "_var = *" + arr_name + "_var_ptr;\n")
166 ret_conv = (ret_conv[0], ret_conv[1] + indent + arr_name + "_arr = " + self.consts.create_native_arr_call(arr_name + "_var." + arr_len, ty_info) + ";\n")
167 get_ptr_call = self.consts.get_native_arr_ptr_call(ty_info)
168 if get_ptr_call is not None:
169 ret_conv = (ret_conv[0], ret_conv[1] + indent + subty.c_ty + " *" + arr_name + "_arr_ptr = " + get_ptr_call[0] + arr_name + "_arr" + get_ptr_call[1] + ";\n")
170 ret_conv = (ret_conv[0], ret_conv[1] + indent + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_var." + arr_len + "; " + idxc + "++) {\n")
171 ret_conv = (ret_conv[0], ret_conv[1] + indent + "\t" + subty.ret_conv[0].replace("\n", "\n\t" + indent))
172 ret_conv = (ret_conv[0], ret_conv[1] + indent + arr_name + "_var." + ty_info.arr_access + "[" + idxc + "]" + subty.ret_conv[1].replace("\n", "\n\t" + indent) + "\n")
173 if get_ptr_call is not None:
174 ret_conv = (ret_conv[0], ret_conv[1] + indent + "\t" + arr_name + "_arr_ptr[" + idxc + "] = " + subty.ret_conv_name + ";\n" + indent + "}\n")
176 ret_conv = (ret_conv[0], ret_conv[1] + indent + "\t" + self.consts.get_native_arr_entry_call(ty_info, arr_name + "_arr", idxc, subty.ret_conv_name) + ";\n" + indent + "}\n")
177 cleanup = self.consts.release_native_arr_ptr_call(ty_info, arr_name + "_arr", arr_name + "_arr_ptr")
178 if cleanup is not None:
179 ret_conv = (ret_conv[0], ret_conv[1] + indent + cleanup + ";")
180 if not holds_ref and not is_nullable:
181 # XXX: The commented if's are a bit smarter freeing, but we need to be a nudge smarter still
182 # Note that we don't drop the full vec here - we're passing ownership to java (or have cloned) or free'd by now!
183 ret_conv = (ret_conv[0], ret_conv[1] + "\n" + indent + "FREE(" + arr_name + "_var." + ty_info.arr_access + ");")
184 #if subty.rust_obj is not None and subty.rust_obj in self.opaque_structs:
185 # ret_conv = (ret_conv[0], ret_conv[1] + "\nFREE(" + arr_name + "_var." + ty_info.arr_access + ");")
187 # ret_conv = (ret_conv[0], ret_conv[1] + "\n" + ty_info.rust_obj.replace("LDK", "") + "_free(" + arr_name + "_var);")
189 ret_conv = (ret_conv[0], ret_conv[1] + "\n}")
191 if subty.to_hu_conv is not None:
192 to_hu_conv = self.consts.var_decl_statement(self.consts.c_type_map["uint32_t"][0], conv_name + "_len", self.consts.get_java_arr_len(arr_name)) + ";\n"
193 to_hu_conv += self.consts.var_decl_statement(ty_info.java_hu_ty, conv_name + "_arr", self.consts.constr_hu_array(ty_info, conv_name + "_len"))
197 to_hu_conv += "if (" + arr_name + " != null) {\n"
199 to_hu_conv += pfx + self.consts.for_n_in_range(idxc, "0", conv_name + "_len") + "\n"
201 to_hu_conv += pfx + "\t" + self.consts.var_decl_statement(subty.java_ty, conv_name, self.consts.get_java_arr_elem(subty, arr_name, idxc)) + ";\n"
202 to_hu_conv += pfx + "\t" + subty.to_hu_conv.replace("\n", "\n\t" + pfx) + "\n"
203 to_hu_conv += pfx + "\t" + conv_name + "_arr[" + idxc + "] = " + subty.to_hu_conv_name + ";\n"
204 to_hu_conv += pfx + "}"
207 cleanup = self.consts.cleanup_converted_native_array(ty_info, arr_name)
208 if cleanup is not None:
209 to_hu_conv += "\n" + cleanup
210 to_hu_conv_name = conv_name + "_arr"
212 to_hu_conv = self.consts.primitive_arr_to_hu(ty_info, None, arr_name, arr_name + "_conv")
213 if to_hu_conv is not None:
214 to_hu_conv_name = arr_name + "_conv"
216 to_hu_conv_name = None
217 from_hu_conv = self.consts.primitive_arr_from_hu(ty_info, None, arr_name)
218 if subty.from_hu_conv is not None:
220 if subty.from_hu_conv[1] != "":
221 iterator = self.consts.for_n_in_arr(conv_name, arr_name, subty)
223 hu_conv_b = "if (" + arr_name + " != null) { " + iterator[0] + subty.from_hu_conv[1] + ";" + iterator[1] + " }"
225 hu_conv_b = iterator[0] + subty.from_hu_conv[1] + ";" + iterator[1]
226 if from_hu_conv is not None:
227 arr_conv = self.consts.primitive_arr_from_hu(ty_info, None, self.consts.map_hu_array_elems(arr_name, conv_name, ty_info, subty))
228 assert arr_conv[1] == ""
229 from_hu_conv = (arr_conv[0], hu_conv_b)
231 from_hu_conv = (self.consts.map_hu_array_elems(arr_name, conv_name, ty_info, subty), hu_conv_b)
233 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
234 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = arg_conv_cleanup,
235 ret_conv = ret_conv, ret_conv_name = arr_name + "_arr", to_hu_conv = to_hu_conv, to_hu_conv_name = to_hu_conv_name, from_hu_conv = from_hu_conv)
236 elif ty_info.java_fn_ty_arg == "Ljava/lang/String;":
237 assert not is_nullable
239 arg_conv = "LDKStr " + ty_info.var_name + "_conv = " + self.consts.str_ref_to_c_call(ty_info.var_name) + ";"
240 arg_conv_name = ty_info.var_name + "_conv"
242 arg_conv = "LDKStr dummy = { .chars = NULL, .len = 0, .chars_is_owned = false };"
243 arg_conv_name = "dummy"
244 if ty_info.arr_access is None:
246 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
247 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = None,
248 ret_conv = ("const char* " + ty_info.var_name + "_str = ",
249 ";\njstring " + ty_info.var_name + "_conv = " + self.consts.str_ref_to_native_call(ty_info.var_name + "_str", "strlen(" + ty_info.var_name + "_str)") + ";"),
250 ret_conv_name = ty_info.var_name + "_conv",
251 to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
255 free_str = "\nStr_free(" + ty_info.var_name + "_str);"
256 to_hu_conv = self.consts.str_to_hu_conv(ty_info.var_name)
257 to_hu_conv_name = None
258 if to_hu_conv is not None:
259 to_hu_conv_name = ty_info.var_name + "_conv"
260 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
261 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = None,
262 ret_conv = ("LDKStr " + ty_info.var_name + "_str = ",
263 ";\njstring " + ty_info.var_name + "_conv = " + self.consts.str_ref_to_native_call(ty_info.var_name + "_str." + ty_info.arr_access, ty_info.var_name + "_str." + ty_info.arr_len) + ";" + free_str),
264 ret_conv_name = ty_info.var_name + "_conv",
265 to_hu_conv=to_hu_conv, to_hu_conv_name=to_hu_conv_name,
266 from_hu_conv = self.consts.str_from_hu_conv(ty_info.var_name))
267 elif ty_info.var_name == "" and not print_void:
268 # We don't have a parameter name, and want one, just call it arg
269 if not ty_info.is_native_primitive:
270 assert(not is_free or ty_info.rust_obj not in self.opaque_structs)
271 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
272 arg_conv = ty_info.rust_obj + " arg_conv = *(" + ty_info.rust_obj + "*)untag_ptr(arg);\nFREE(untag_ptr(arg));",
273 arg_conv_name = "arg_conv", arg_conv_cleanup = None,
274 ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 7", to_hu_conv_name = None, from_hu_conv = None)
277 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
278 arg_conv = None, arg_conv_name = "arg", arg_conv_cleanup = None,
279 ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 8", to_hu_conv_name = None, from_hu_conv = None)
280 elif ty_info.is_native_primitive and ty_info.c_ty != "void":
281 assert not is_nullable
282 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
283 arg_conv = None, arg_conv_name = ty_info.var_name, arg_conv_cleanup = None,
284 ret_conv = (ty_info.c_ty + " " + ty_info.var_name + "_conv = ", ";"), ret_conv_name = ty_info.var_name + "_conv",
285 to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
286 elif ty_info.c_ty == "void":
287 assert ty_info.is_native_primitive
288 assert not is_nullable
289 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
290 arg_conv = None, arg_conv_name = ty_info.var_name, arg_conv_cleanup = None,
291 ret_conv = None, ret_conv_name = ty_info.var_name,
292 to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
294 if ty_info.var_name == "":
295 ty_info.var_name = "ret"
297 if ty_info.rust_obj in self.opaque_structs:
298 from_hu_conv = (ty_info.var_name + " == null ? " + self.consts.native_zero_ptr + " : " + self.consts.get_ptr(ty_info.var_name), self.consts.add_ref("this", ty_info.var_name))
299 opaque_arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv;\n"
300 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.inner = untag_ptr(" + ty_info.var_name + ");\n"
301 opaque_arg_conv += ty_info.var_name + "_conv.is_owned = ptr_is_owned(" + ty_info.var_name + ");\n"
302 opaque_arg_conv += "CHECK_INNER_FIELD_ACCESS_OR_NULL(" + ty_info.var_name + "_conv);"
304 if not is_free and (not ty_info.is_ptr or not holds_ref or ty_info.requires_clone == True) and ty_info.requires_clone != False:
305 if (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
306 # 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.
307 # arg_conv is used when converting a function argument from java normally (with holds_ref set),
308 # and when converting a java value being returned from a trait method (with holds_ref unset).
309 # In the second case, we need to clone before returning to C (as once we return the GC can free the object),
310 # whereas in the first we prefer to clone in C to avoid additional Java code as much as possible.
312 opaque_arg_conv += "\n" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&" + ty_info.var_name + "_conv);"
314 from_hu_conv = (ty_info.var_name + " == null ? " + self.consts.native_zero_ptr + " : " + ty_info.var_name + ".clone_ptr()", "")
315 elif ty_info.passed_as_ptr:
316 opaque_arg_conv += "\n// WARNING: we need a move here but no clone is available for " + ty_info.rust_obj + "\n"
317 # TODO: Once we support features cloning (which just isn't in C yet), we can make this a compile error instead!
318 from_hu_conv = (from_hu_conv[0], from_hu_conv[1] + ";\n" +
319 "// Due to rust's strict-ownership memory model, in some cases we need to \"move\"\n" +
320 "// an object to pass exclusive ownership to the function being called.\n" +
321 "// In most cases, we avoid this being visible in GC'd languages by cloning the object\n" +
322 "// at the FFI layer, creating a new object which Rust can claim ownership of\n" +
323 "// However, in some cases (eg here), there is no way to clone an object, and thus\n" +
324 "// we actually have to pass full ownership to Rust.\n" +
325 "// Thus, after this call, " + ty_info.var_name + " is reset to null and is now a dummy object.\n" + self.consts.set_null_skip_free(ty_info.var_name))
327 opaque_arg_conv += "\n" + ty_info.var_name + "_conv.is_owned = false;"
329 opaque_ret_conv_suf = ";\n"
330 opaque_ret_conv_suf += self.consts.ptr_c_ty + " " + ty_info.var_name + "_ref = 0;\n"
331 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
332 opaque_ret_conv_suf += ty_info.var_name + "_var = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&" + ty_info.var_name + "_var);\n"
333 elif not holds_ref and ty_info.is_ptr:
334 opaque_ret_conv_suf += "// WARNING: we may need a move here but no clone is available for " + ty_info.rust_obj + "\n"
336 opaque_ret_conv_suf += "CHECK_INNER_FIELD_ACCESS_OR_NULL(" + ty_info.var_name + "_var);\n"
338 opaque_ret_conv_suf += ty_info.var_name + "_ref = tag_ptr(" + ty_info.var_name + "_var.inner, false);"
340 opaque_ret_conv_suf += ty_info.var_name + "_ref = tag_ptr(" + ty_info.var_name + "_var.inner, " + ty_info.var_name + "_var.is_owned);"
343 if not ty_info.is_ptr or holds_ref:
344 to_hu_conv_sfx = "\n" + self.consts.add_ref(ty_info.var_name + "_hu_conv", "this") + ";"
345 qualified_hu_ty = self.consts.fully_qualified_hu_ty_path(ty_info)
347 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
348 arg_conv = opaque_arg_conv, arg_conv_name = "&" + ty_info.var_name + "_conv", arg_conv_cleanup = None,
349 ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = *", opaque_ret_conv_suf),
350 ret_conv_name = ty_info.var_name + "_ref",
351 to_hu_conv = self.consts.to_hu_conv_templates['ptr'].replace('{human_type}', qualified_hu_ty).replace('{var_name}', ty_info.var_name) + to_hu_conv_sfx,
352 to_hu_conv_name = ty_info.var_name + "_hu_conv",
353 from_hu_conv = from_hu_conv)
355 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
356 arg_conv = opaque_arg_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
357 ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = ", opaque_ret_conv_suf),
358 ret_conv_name = ty_info.var_name + "_ref",
359 to_hu_conv = self.consts.to_hu_conv_templates['default'].replace('{human_type}', qualified_hu_ty).replace('{var_name}', ty_info.var_name) + to_hu_conv_sfx,
360 to_hu_conv_name = ty_info.var_name + "_hu_conv",
361 from_hu_conv = from_hu_conv)
363 assert not is_nullable
364 if not ty_info.is_ptr:
365 if ty_info.rust_obj in self.unitary_enums:
366 (ret_pfx, ret_sfx) = self.consts.c_unitary_enum_to_native_call(ty_info)
367 (arg_pfx, arg_sfx) = self.consts.native_unitary_enum_to_c_call(ty_info)
368 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
369 arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = " + arg_pfx + ty_info.var_name + arg_sfx + ";",
370 arg_conv_name = ty_info.var_name + "_conv",
371 arg_conv_cleanup = None,
372 ret_conv = (ty_info.c_ty + " " + ty_info.var_name + "_conv = " + ret_pfx, ret_sfx + ";"),
373 ret_conv_name = ty_info.var_name + "_conv", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
374 base_conv = "void* " + ty_info.var_name + "_ptr = untag_ptr(" + ty_info.var_name + ");\n"
375 base_conv += "CHECK_ACCESS(" + ty_info.var_name + "_ptr);\n"
376 base_conv += ty_info.rust_obj + " " + ty_info.var_name + "_conv = *(" + ty_info.rust_obj + "*)(" + ty_info.var_name + "_ptr);"
378 if ty_info.rust_obj in self.trait_structs:
379 ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_ret = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*" + ty_info.var_name + "_ret = ", ";")
381 if (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
382 ret_conv = (ret_conv[0] + ty_info.rust_obj.replace("LDK", "") + "_clone(&", ");")
384 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")
385 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)"))
387 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
388 if needs_full_clone and (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
389 # arg_conv is used when converting a function argument from java normally (with holds_ref set),
390 # and when converting a java value being returned from a trait method (with holds_ref unset).
391 # In the second case, we need to clone before returning to C (as once we return the GC can free the object),
392 # whereas in the first we prefer to clone in C to avoid additional Java code as much as possible.
394 base_conv += "\n" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&" + ty_info.var_name + "_conv);"
396 from_hu_conv = (ty_info.var_name + ".clone_ptr()", "")
397 base_conv += "\n" + "FREE(untag_ptr(" + ty_info.var_name + "));"
399 base_conv = base_conv + self.consts.trait_struct_inc_refcnt(ty_info)
401 base_conv += "// WARNING: we may need a move here but no clone is available for " + ty_info.rust_obj + "\n"
403 base_conv = base_conv + "\n" + "FREE(untag_ptr(" + ty_info.var_name + "));"
404 if from_hu_conv is None:
405 from_hu_conv = (self.consts.get_ptr(ty_info.var_name), "")
406 from_hu_conv = (from_hu_conv[0], self.consts.add_ref("this", ty_info.var_name))
407 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
408 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
409 ret_conv = ret_conv, ret_conv_name = "tag_ptr(" + ty_info.var_name + "_ret, true)",
410 to_hu_conv = self.consts.var_decl_statement(ty_info.java_hu_ty, "ret_hu_conv", "new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ")") + ";\n" + self.consts.add_ref("ret_hu_conv", "this") + ";",
411 to_hu_conv_name = "ret_hu_conv", from_hu_conv = from_hu_conv)
412 needs_full_clone = not is_free and (not ty_info.is_ptr or ty_info.requires_clone == True) and ty_info.requires_clone != False
414 if "res" in ty_info.var_name: # XXX: This is a stupid hack
415 needs_full_clone = False
416 if needs_full_clone and (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
417 # arg_conv is used when converting a function argument from java normally (with holds_ref set),
418 # and when converting a java value being returned from a trait method (with holds_ref unset).
419 # In the second case, we need to clone before returning to C (as once we return the GC can free the object),
420 # whereas in the first we prefer to clone in C to avoid additional Java code as much as possible.
422 base_conv += "\n" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone((" + ty_info.rust_obj + "*)untag_ptr(" + ty_info.var_name + "));"
424 from_hu_conv = (ty_info.var_name + " == null ? " + self.consts.native_zero_ptr + " : " + ty_info.var_name + ".clone_ptr()", "")
425 base_conv += "\n" + "FREE(untag_ptr(" + ty_info.var_name + "));"
426 elif needs_full_clone:
427 base_conv = base_conv + "\n// WARNING: we may need a move here but no clone is available for " + ty_info.rust_obj
428 if not needs_full_clone and ty_info.rust_obj != "LDKu8slice" and (not holds_ref or is_free):
429 # Don't bother free'ing slices passed in - Rust doesn't auto-free the
430 # underlying unlike Vecs, and it gives Java more freedom.
431 base_conv = base_conv + "\nFREE(untag_ptr(" + ty_info.var_name + "));"
432 if ty_info.rust_obj in self.complex_enums:
433 if needs_full_clone and (ty_info.rust_obj.replace("LDK", "") + "_clone") not in self.clone_fns:
434 # We really need a full clone here, but for now we just implement
435 # a manual clone explicitly for Option<Trait>s
436 if ty_info.contains_trait:
437 assert ty_info.rust_obj.startswith("LDKCOption") # We don't support contained traits for anything else yet
438 optional_ty = ty_info.rust_obj[11:-1]
439 assert "LDK" + optional_ty in self.trait_structs # We don't support contained traits for anything else yet
440 base_conv += "\nif (" + ty_info.var_name + "_conv.tag == " + ty_info.rust_obj + "_Some) {"
441 base_conv += "\n\t// Manually implement clone for Java trait instances"
442 optional_ty_info = self.java_c_types("LDK" + optional_ty + " " + ty_info.var_name, None)
443 base_conv += self.consts.trait_struct_inc_refcnt(optional_ty_info).\
444 replace("\n", "\n\t").replace(ty_info.var_name + "_conv", ty_info.var_name + "_conv.some")
446 ret_conv = (self.consts.ptr_c_ty + " " + ty_info.var_name + "_ref = tag_ptr(&", ", false);")
448 ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_copy = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n", "")
449 ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", "")
450 ret_conv = (ret_conv[0], ";\n" + self.consts.ptr_c_ty + " " + ty_info.var_name + "_ref = tag_ptr(" + ty_info.var_name + "_copy, true);")
451 if from_hu_conv is None:
452 from_hu_conv = (self.consts.get_ptr(ty_info.var_name), "")
453 from_hu_conv = (from_hu_conv[0], self.consts.add_ref("this", ty_info.var_name))
454 fully_qualified_ty = self.consts.fully_qualified_hu_ty_path(ty_info)
455 to_hu_call = fully_qualified_ty + ".constr_from_ptr(" + ty_info.var_name + ")"
456 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
457 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
458 ret_conv = ret_conv, ret_conv_name = ty_info.var_name + "_ref",
459 to_hu_conv = self.consts.var_decl_statement(fully_qualified_ty, ty_info.var_name + "_hu_conv", to_hu_call) + ";\n" + self.consts.add_ref(ty_info.var_name + "_hu_conv", "this") + ";",
460 to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = from_hu_conv)
461 if ty_info.rust_obj in self.result_types:
463 # If we're trying to return a ref, we have to clone.
464 # We just blindly assume its implemented and let the compiler fail if its not.
465 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 = ", ";")
466 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);")
468 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 = ", ";")
469 if from_hu_conv is None:
470 from_hu_conv = (ty_info.var_name + " != null ? " + self.consts.get_ptr(ty_info.var_name) + " : " + self.consts.native_zero_ptr, "")
471 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
472 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
473 ret_conv = ret_conv, ret_conv_name = "tag_ptr(" + ty_info.var_name + "_conv, true)",
474 to_hu_conv = self.consts.var_decl_statement(ty_info.java_hu_ty, ty_info.var_name + "_hu_conv", ty_info.java_hu_ty + ".constr_from_ptr(" + ty_info.var_name + ")") + ";",
475 to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = from_hu_conv)
476 if ty_info.rust_obj in self.tuple_types:
477 ret_conv_name = "tag_ptr(" + ty_info.var_name + "_conv, "
479 # If we're trying to return a ref, we have to clone.
480 if (ty_info.rust_obj.replace("LDK", "") + "_clone") not in self.clone_fns:
481 ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_conv = &", "")
482 ret_conv = (ret_conv[0], ";\n// WARNING: we really need to clone here, but no clone is available for " + ty_info.rust_obj)
483 ret_conv_name += "false)"
485 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 = ", ";")
486 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);")
487 ret_conv_name += "true)"
489 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 = ", ";")
490 ret_conv_name += "true)"
491 if not ty_info.is_ptr or holds_ref:
492 to_hu_conv_sfx = "\n" + self.consts.add_ref(ty_info.var_name + "_hu_conv", "this") + ";"
495 if from_hu_conv is None:
496 from_hu_conv = (ty_info.var_name + " != null ? " + self.consts.get_ptr(ty_info.var_name) + " : " + self.consts.native_zero_ptr, "")
497 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
498 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
499 ret_conv = ret_conv, ret_conv_name = ret_conv_name,
500 to_hu_conv = self.consts.var_decl_statement(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,
501 to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = from_hu_conv)
503 # The manually-defined types - TxIn, TxOut, BigEndianScalar, U5, and Error
504 if ty_info.rust_obj == "LDKError":
505 assert from_hu_conv is None
506 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
507 arg_conv = "", arg_conv_name = "(LDKError){ ._dummy = 0 }", arg_conv_cleanup = None,
508 ret_conv = ("/*", "*/"), ret_conv_name = "0",
509 to_hu_conv = self.consts.var_decl_statement(ty_info.java_hu_ty, ty_info.var_name + "_conv", "new " + ty_info.java_hu_ty + "(" + ty_info.var_name + ")") + ";",
510 to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = ("0", ""))
512 if ty_info.rust_obj == "LDKU5" or ty_info.rust_obj == "LDKWitnessVersion":
513 assert from_hu_conv is None
514 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
515 arg_conv = "", arg_conv_name = "(" + ty_info.rust_obj + "){ ._0 = " + ty_info.var_name + " }", arg_conv_cleanup = None,
516 ret_conv = ("uint8_t " + ty_info.var_name + "_val = ", "._0;"), ret_conv_name = ty_info.var_name + "_val",
517 to_hu_conv = self.consts.var_decl_statement(ty_info.java_hu_ty, ty_info.var_name + "_conv", "new " + ty_info.java_hu_ty + "(" + ty_info.var_name + ")") + ";",
518 to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (ty_info.var_name + ".getVal()", ""))
520 assert ty_info.rust_obj == "LDKTxOut" or ty_info.rust_obj == "LDKTxIn" or ty_info.rust_obj == "LDKBigEndianScalar"
521 if not ty_info.is_ptr and not holds_ref:
522 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 = ", ";")
523 ret_conv_name = "tag_ptr(" + ty_info.var_name + "_ref, true)"
525 ret_conv = (ty_info.rust_obj + "* " + ty_info.var_name + "_ref = &", ";")
526 ret_conv_name = "tag_ptr(" + ty_info.var_name + "_ref, false)"
527 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
528 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
529 ret_conv = ret_conv, ret_conv_name = ret_conv_name,
530 to_hu_conv = self.consts.var_decl_statement(ty_info.java_hu_ty, ty_info.var_name + "_conv", "new " +ty_info.java_hu_ty + "(null, " + ty_info.var_name + ")") + ";",
531 to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (self.consts.get_ptr(ty_info.var_name), ""))
534 if ty_info.rust_obj in self.complex_enums:
535 ret_conv = (self.consts.ptr_c_ty + " ref_" + ty_info.var_name + " = tag_ptr(", ", false); // WARNING: We should clone here!")
536 from_hu_sfx = self.consts.add_ref("this", ty_info.var_name)
537 if ty_info.rust_obj.replace("LDK", "") + "_clone" in self.clone_fns:
538 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"
539 ret_conv_pfx += "*ret_" + ty_info.var_name + " = " + ty_info.rust_obj.replace("LDK", "") + "_clone("
540 ret_conv_sfx = ");\n" + self.consts.ptr_c_ty + " ref_" + ty_info.var_name + " = tag_ptr(ret_" + ty_info.var_name + ", true);"
541 ret_conv = (ret_conv_pfx, ret_conv_sfx)
543 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
544 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)untag_ptr(" + ty_info.var_name + ");",
545 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
546 ret_conv = ret_conv, ret_conv_name = "ref_" + ty_info.var_name,
547 to_hu_conv = self.consts.var_decl_statement(ty_info.java_hu_ty, ty_info.var_name + "_hu_conv", ty_info.java_hu_ty + ".constr_from_ptr(" + ty_info.var_name + ")") + ";",
548 to_hu_conv_name = ty_info.var_name + "_hu_conv",
549 from_hu_conv = (ty_info.var_name + " == null ? " + self.consts.native_zero_ptr + " : " + self.consts.get_ptr(ty_info.var_name), from_hu_sfx))
550 elif ty_info.rust_obj in self.trait_structs:
551 if ty_info.nonnull_ptr:
552 arg_conv = "void* " + ty_info.var_name + "_ptr = untag_ptr(" + ty_info.var_name + ");\n"
553 arg_conv += "if (ptr_is_owned(" + ty_info.var_name + ")) { CHECK_ACCESS(" + ty_info.var_name + "_ptr); }\n"
554 arg_conv += ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + "_ptr;"
555 arg_conv_name = ty_info.var_name + "_conv"
556 from_hu_conv_pfx = self.consts.get_ptr(ty_info.var_name)
558 # We map Option<Trait> as *mut Trait, which we can differentiate from &Trait by the NONNULL_PTR annotation.
559 # We handle the Option<Trait> case here.
560 arg_conv = ty_info.rust_obj + " *" + ty_info.var_name + "_conv_ptr = NULL;\n"
561 arg_conv += "if (" + ty_info.var_name + " != 0) {\n"
562 arg_conv += "\t" + ty_info.rust_obj + " " + ty_info.var_name + "_conv;\n"
563 arg_conv += "void* " + ty_info.var_name + "_ptr = untag_ptr(" + ty_info.var_name + ");\n"
564 arg_conv += "CHECK_ACCESS(" + ty_info.var_name + "_ptr);\n"
565 arg_conv += "\t" + ty_info.var_name + "_conv = *(" + ty_info.rust_obj + "*)" + ty_info.var_name + "_ptr;"
566 arg_conv += self.consts.trait_struct_inc_refcnt(ty_info).replace("\n", "\n\t")
567 arg_conv += "\n\t" + ty_info.var_name + "_conv_ptr = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n"
568 arg_conv += "\t*" + ty_info.var_name + "_conv_ptr = " + ty_info.var_name + "_conv;\n"
570 arg_conv_name = ty_info.var_name + "_conv_ptr"
571 from_hu_conv_pfx = ty_info.var_name + " == null ? " + self.consts.native_zero_ptr + " : " + self.consts.get_ptr(ty_info.var_name)
572 if ty_info.rust_obj.replace("LDK", "") + "_clone" in self.clone_fns:
573 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
574 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = None,
575 ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_clone = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n" +
576 "*" + ty_info.var_name + "_clone = " + ty_info.rust_obj.replace("LDK", "") + "_clone(", ");"),
577 ret_conv_name = "tag_ptr(" + ty_info.var_name + "_clone, true)",
578 to_hu_conv = self.consts.var_decl_statement(ty_info.java_hu_ty, "ret_hu_conv", "new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ")") + ";\n" + self.consts.add_ref("ret_hu_conv", "this") + ";",
579 to_hu_conv_name = "ret_hu_conv", from_hu_conv = (from_hu_conv_pfx, ""))
581 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
582 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = None,
583 ret_conv = ("// WARNING: This object doesn't live past this scope, needs clone!\n" + self.consts.ptr_c_ty + " ret_" + ty_info.var_name + " = tag_ptr(", ", false);"),
584 ret_conv_name = "ret_" + ty_info.var_name,
585 to_hu_conv = self.consts.var_decl_statement(ty_info.java_hu_ty, "ret_hu_conv", "new " + ty_info.java_hu_ty + "(null, " + ty_info.var_name + ")") + ";\n" + self.consts.add_ref("ret_hu_conv", "this") + ";",
586 to_hu_conv_name = "ret_hu_conv", from_hu_conv = (from_hu_conv_pfx, self.consts.add_ref("this", ty_info.var_name)))
587 ret_conv = (self.consts.ptr_c_ty + " ret_" + ty_info.var_name + " = tag_ptr(", ", true);")
589 ret_conv = (ret_conv[0], ", false);")
590 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
591 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)untag_ptr(" + ty_info.var_name + ");",
592 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
593 ret_conv = ret_conv, ret_conv_name = "ret_" + ty_info.var_name,
594 to_hu_conv = "TODO 3", to_hu_conv_name = None, from_hu_conv = None) # its a pointer, no conv needed
595 assert False # We should have handled every case by now.