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)
22 def map_type_with_info(self, ty_info, print_void, ret_arr_len, is_free, holds_ref):
23 if ty_info.c_ty == "void":
25 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
26 arg_conv = None, arg_conv_name = None, arg_conv_cleanup = None,
27 ret_conv = None, ret_conv_name = None, to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
28 if ty_info.c_ty.endswith("Array"):
29 arr_len = ty_info.arr_len
30 if arr_len is not None:
31 arr_name = ty_info.var_name
35 if ty_info.c_ty == "int8_tArray":
36 (set_pfx, set_sfx) = self.consts.set_native_arr_contents(arr_name + "_arr", arr_len, ty_info)
37 ret_conv = ("int8_tArray " + arr_name + "_arr = " + self.consts.create_native_arr_call(arr_len, ty_info) + ";\n" + set_pfx, "")
38 arg_conv_cleanup = None
39 if not arr_len.isdigit():
40 arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n"
41 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"
42 if (not ty_info.is_ptr or not holds_ref) and ty_info.rust_obj != "LDKu8slice":
43 arg_conv = arg_conv + arr_name + "_ref." + ty_info.arr_access + " = MALLOC(" + arr_name + "_ref." + arr_len + ", \"" + ty_info.rust_obj + " Bytes\");\n"
44 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) + ";"
46 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) + ";"
47 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)
48 if ty_info.rust_obj == "LDKTransaction":
49 arg_conv = arg_conv + "\n" + arr_name + "_ref.data_is_owned = " + str(holds_ref).lower() + ";"
50 ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "")
51 ret_conv = (ret_conv[0], ";\nint8_tArray " + arr_name + "_arr = " + self.consts.create_native_arr_call(arr_name + "_var." + arr_len, ty_info) + ";\n")
52 (pfx, sfx) = self.consts.set_native_arr_contents(arr_name + "_arr", arr_name + "_var." + arr_len, ty_info)
53 ret_conv = (ret_conv[0], ret_conv[1] + pfx + arr_name + "_var." + ty_info.arr_access + sfx + ";")
54 if not holds_ref and ty_info.rust_obj != "LDKu8slice":
55 ret_conv = (ret_conv[0], ret_conv[1] + "\n" + ty_info.rust_obj.replace("LDK", "") + "_free(" + arr_name + "_var);")
56 elif ty_info.rust_obj is not None:
57 arg_conv = ty_info.rust_obj + " " + arr_name + "_ref;\n"
58 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"
59 arg_conv = arg_conv + self.consts.get_native_arr_contents(arr_name, arr_name + "_ref." + ty_info.arr_access, arr_len, ty_info, True) + ";"
60 ret_conv = (ret_conv[0], "." + ty_info.arr_access + set_sfx + ";")
62 arg_conv = "unsigned char " + arr_name + "_arr[" + arr_len + "];\n"
63 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"
64 arg_conv = arg_conv + self.consts.get_native_arr_contents(arr_name, arr_name + "_arr", arr_len, ty_info, True) + ";\n"
65 arg_conv = arg_conv + "unsigned char (*" + arr_name + "_ref)[" + arr_len + "] = &" + arr_name + "_arr;"
66 ret_conv = (ret_conv[0] + "*", set_sfx + ";")
67 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
68 arg_conv = arg_conv, arg_conv_name = arr_name + "_ref", arg_conv_cleanup = arg_conv_cleanup,
69 ret_conv = ret_conv, ret_conv_name = arr_name + "_arr", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
71 assert not arr_len.isdigit() # fixed length arrays not implemented
72 assert ty_info.java_ty[len(ty_info.java_ty) - 2:] == "[]"
75 conv_name = arr_name + "_conv_" + str(len(ty_info.java_hu_ty))
76 idxc = chr(ord('a') + (len(ty_info.java_hu_ty) % 26))
77 ty_info.subty.var_name = conv_name
78 #XXX: We'd really prefer to only ever set to False, avoiding lots of clone, but need smarter free logic
79 #if ty_info.is_ptr or holds_ref:
80 # ty_info.subty.requires_clone = False
81 ty_info.subty.requires_clone = not ty_info.is_ptr or not holds_ref
82 if not ty_info.subty.is_native_primitive and ty_info.subty.rust_obj == "LDKChannelMonitor":
83 # We take a Vec of references to ChannelMonitors as input to ChannelManagerReadArgs, if we clone them,
84 # we end up freeing the clones after creating the ChannelManagerReadArgs before calling the read
85 # function itself, resulting in a segfault. Thus, we manually check and ensure we don't clone for
86 # ChannelMonitors inside of vecs.
87 ty_info.subty.requires_clone = False
88 subty = self.map_type_with_info(ty_info.subty, False, None, is_free, holds_ref)
89 arg_conv = ty_info.rust_obj + " " + arr_name + "_constr;\n"
93 arg_conv += ty_info.rust_obj + " *" + arr_name + "_ptr = NULL;\n"
94 arg_conv += "if (" + self.consts.is_arr_some_check[0] + arr_name + self.consts.is_arr_some_check[1] + ") {\n"
95 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"
96 arg_conv += pf + "if (" + arr_name + "_constr." + arr_len + " > 0)\n"
97 if subty.is_native_primitive:
100 szof = subty.rust_obj
101 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"
102 arg_conv += pf + "else\n"
103 arg_conv += pf + "\t" + arr_name + "_constr." + ty_info.arr_access + " = NULL;\n"
104 get_arr = self.consts.get_native_arr_contents(arr_name, "NO_DEST", arr_name + "_constr." + arr_len, ty_info, False)
106 arg_conv += pf + subty.c_ty + "* " + arr_name + "_vals = " + get_arr + ";\n"
107 arg_conv += pf + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_constr." + arr_len + "; " + idxc + "++) {\n"
109 arg_conv += pf + "\t" + subty.c_ty + " " + conv_name + " = " + arr_name + "_vals[" + idxc + "];"
110 if subty.arg_conv is not None:
111 arg_conv += "\n\t" + pf + subty.arg_conv.replace("\n", "\n\t" + pf)
113 arg_conv += pf + "\t" + subty.c_ty + " " + conv_name + " = " + self.consts.get_native_arr_elem(arr_name, idxc, ty_info) + ";\n"
114 arg_conv += pf + "\t" + subty.arg_conv.replace("\n", "\n\t" + pf)
115 arg_conv += "\n\t" + pf + arr_name + "_constr." + ty_info.arr_access + "[" + idxc + "] = " + subty.arg_conv_name + ";\n" + pf + "}"
117 cleanup = self.consts.cleanup_native_arr_ref_contents(arr_name, arr_name + "_vals", arr_name + "_constr." + arr_len, ty_info)
118 if cleanup is not None:
119 arg_conv += "\n" + pf + cleanup + ";"
121 arg_conv_name = arr_name + "_ptr"
123 arg_conv_name = arr_name + "_constr"
124 arg_conv_cleanup = None
126 arg_conv_cleanup = "if (" + arr_name + "_ptr != NULL) { FREE(" + arr_name + "_constr." + ty_info.arr_access + "); }"
128 arg_conv += "\n\t" + arr_name + "_ptr = &" + arr_name + "_constr;\n}"
130 ret_conv = (ty_info.rust_obj + " " + arr_name + "_var = ", "")
131 if subty.ret_conv is None:
132 ret_conv = ("DUMMY", "DUMMY")
134 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")
135 get_ptr_call = self.consts.get_native_arr_ptr_call(ty_info)
136 if get_ptr_call is not None:
137 ret_conv = (ret_conv[0], ret_conv[1] + subty.c_ty + " *" + arr_name + "_arr_ptr = " + get_ptr_call[0] + arr_name + "_arr" + get_ptr_call[1] + ";\n")
138 ret_conv = (ret_conv[0], ret_conv[1] + "for (size_t " + idxc + " = 0; " + idxc + " < " + arr_name + "_var." + arr_len + "; " + idxc + "++) {\n")
139 ret_conv = (ret_conv[0], ret_conv[1] + "\t" + subty.ret_conv[0].replace("\n", "\n\t"))
140 ret_conv = (ret_conv[0], ret_conv[1] + arr_name + "_var." + ty_info.arr_access + "[" + idxc + "]" + subty.ret_conv[1].replace("\n", "\n\t"))
141 if get_ptr_call is not None:
142 ret_conv = (ret_conv[0], ret_conv[1] + "\n\t" + arr_name + "_arr_ptr[" + idxc + "] = " + subty.ret_conv_name + ";\n}")
144 ret_conv = (ret_conv[0], ret_conv[1] + "\n\t" + self.consts.get_native_arr_entry_call(ty_info, arr_name + "_arr", idxc, subty.ret_conv_name) + ";\n}")
145 cleanup = self.consts.release_native_arr_ptr_call(ty_info, arr_name + "_arr", arr_name + "_arr_ptr")
146 if cleanup is not None:
147 ret_conv = (ret_conv[0], ret_conv[1] + "\n" + cleanup + ";")
149 # XXX: The commented if's are a bit smarter freeing, but we need to be a nudge smarter still
150 # Note that we don't drop the full vec here - we're passing ownership to java (or have cloned) or free'd by now!
151 ret_conv = (ret_conv[0], ret_conv[1] + "\nFREE(" + arr_name + "_var." + ty_info.arr_access + ");")
152 #if subty.rust_obj is not None and subty.rust_obj in self.opaque_structs:
153 # ret_conv = (ret_conv[0], ret_conv[1] + "\nFREE(" + arr_name + "_var." + ty_info.arr_access + ");")
155 # ret_conv = (ret_conv[0], ret_conv[1] + "\n" + ty_info.rust_obj.replace("LDK", "") + "_free(" + arr_name + "_var);")
158 to_hu_conv_name = None
159 if subty.to_hu_conv is not None:
160 to_hu_conv = ty_info.java_hu_ty + " " + conv_name + "_arr = new " + ty_info.subty.java_hu_ty.split("<")[0] + "[" + arr_name + ".length];\n"
161 to_hu_conv = to_hu_conv + "for (int " + idxc + " = 0; " + idxc + " < " + arr_name + ".length; " + idxc + "++) {\n"
162 to_hu_conv = to_hu_conv + "\t" + subty.java_ty + " " + conv_name + " = " + arr_name + "[" + idxc + "];\n"
163 to_hu_conv = to_hu_conv + "\t" + subty.to_hu_conv.replace("\n", "\n\t") + "\n"
164 to_hu_conv = to_hu_conv + "\t" + conv_name + "_arr[" + idxc + "] = " + subty.to_hu_conv_name + ";\n}"
165 to_hu_conv_name = conv_name + "_arr"
167 if subty.from_hu_conv is not None:
168 if subty.java_ty == "long" and subty.java_hu_ty != "long":
169 from_hu_conv = (arr_name + " != null ? Arrays.stream(" + arr_name + ").mapToLong(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray() : null", "/* TODO 2 " + subty.java_hu_ty + " */")
170 elif subty.java_ty == "long":
171 from_hu_conv = (arr_name + " != null ? Arrays.stream(" + arr_name + ").map(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray() : null", "/* TODO 2 " + subty.java_hu_ty + " */")
173 from_hu_conv = (arr_name + " != null ? Arrays.stream(" + arr_name + ").map(" + conv_name + " -> " + subty.from_hu_conv[0] + ").toArray(" + ty_info.java_ty + "::new) : null", "/* TODO 2 " + subty.java_hu_ty + " */")
175 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
176 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = arg_conv_cleanup,
177 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)
178 elif ty_info.java_ty == "String":
180 arg_conv = "LDKStr " + ty_info.var_name + "_conv = " + self.consts.str_ref_to_c_call(ty_info.var_name) + ";"
181 arg_conv_name = ty_info.var_name + "_conv"
183 arg_conv = "LDKStr dummy = { .chars = NULL, .len = 0, .chars_is_owned = false };"
184 arg_conv_name = "dummy"
185 if ty_info.arr_access is None:
186 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
187 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = None,
188 ret_conv = ("const char* " + ty_info.var_name + "_str = ",
189 ";\njstring " + ty_info.var_name + "_conv = " + self.consts.str_ref_to_native_call(ty_info.var_name + "_str", "strlen(" + ty_info.var_name + "_str)") + ";"),
190 ret_conv_name = ty_info.var_name + "_conv",
191 to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
195 free_str = "\nStr_free(" + ty_info.var_name + "_str);"
196 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
197 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = None,
198 ret_conv = ("LDKStr " + ty_info.var_name + "_str = ",
199 ";\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),
200 ret_conv_name = ty_info.var_name + "_conv", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
201 elif ty_info.var_name == "" and not print_void:
202 # We don't have a parameter name, and want one, just call it arg
203 if not ty_info.is_native_primitive:
204 assert(not is_free or ty_info.rust_obj not in self.opaque_structs)
205 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
206 arg_conv = ty_info.rust_obj + " arg_conv = *(" + ty_info.rust_obj + "*)arg;\nFREE((void*)arg);",
207 arg_conv_name = "arg_conv", arg_conv_cleanup = None,
208 ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 7", to_hu_conv_name = None, from_hu_conv = None)
211 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
212 arg_conv = None, arg_conv_name = "arg", arg_conv_cleanup = None,
213 ret_conv = None, ret_conv_name = None, to_hu_conv = "TODO 8", to_hu_conv_name = None, from_hu_conv = None)
214 elif ty_info.is_native_primitive:
215 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
216 arg_conv = None, arg_conv_name = ty_info.var_name, arg_conv_cleanup = None,
217 ret_conv = None, ret_conv_name = None, to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
219 if ty_info.var_name == "":
220 ty_info.var_name = "ret"
222 if ty_info.rust_obj in self.opaque_structs:
223 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")")
224 opaque_arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv;\n"
225 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.inner = (void*)(" + ty_info.var_name + " & (~1));\n"
226 if ty_info.is_ptr and holds_ref:
227 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.is_owned = false;"
229 opaque_arg_conv = opaque_arg_conv + ty_info.var_name + "_conv.is_owned = (" + ty_info.var_name + " & 1) || (" + ty_info.var_name + " == 0);"
230 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:
231 if (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
232 # 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.
233 opaque_arg_conv = opaque_arg_conv + "\n" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&" + ty_info.var_name + "_conv);"
234 elif ty_info.passed_as_ptr:
235 opaque_arg_conv = opaque_arg_conv + "\n// Warning: we need a move here but no clone is available for " + ty_info.rust_obj
236 # TODO: Once we support features cloning (which just isn't in C yet), we can make this a compile error instead!
237 from_hu_conv = (from_hu_conv[0], from_hu_conv[1] + ";\n" +
238 "// Due to rust's strict-ownership memory model, in some cases we need to \"move\"\n" +
239 "// an object to pass exclusive ownership to the function being called.\n" +
240 "// In most cases, we avoid this being visible in GC'd languages by cloning the object\n" +
241 "// at the FFI layer, creating a new object which Rust can claim ownership of\n" +
242 "// However, in some cases (eg here), there is no way to clone an object, and thus\n" +
243 "// we actually have to pass full ownership to Rust.\n" +
244 "// 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")
246 opaque_ret_conv_suf = ";\n"
247 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
248 opaque_ret_conv_suf = opaque_ret_conv_suf + ty_info.var_name + "_var = " + ty_info.rust_obj.replace("LDK", "") + "_clone(" + ty_info.var_name + ");\n"
249 elif not holds_ref and ty_info.is_ptr:
250 opaque_ret_conv_suf = opaque_ret_conv_suf + "// Warning: we may need a move here but no clone is available for " + ty_info.rust_obj + "\n"
252 opaque_ret_conv_suf = opaque_ret_conv_suf + "CHECK((((uint64_t)" + ty_info.var_name + "_var.inner) & 1) == 0); // We rely on a free low bit, malloc guarantees this.\n"
253 opaque_ret_conv_suf = opaque_ret_conv_suf + "CHECK((((uint64_t)&" + ty_info.var_name + "_var) & 1) == 0); // We rely on a free low bit, pointer alignment guarantees this.\n"
255 opaque_ret_conv_suf = opaque_ret_conv_suf + "uint64_t " + ty_info.var_name + "_ref = (uint64_t)" + ty_info.var_name + "_var.inner & ~1;"
257 opaque_ret_conv_suf = opaque_ret_conv_suf + "uint64_t " + ty_info.var_name + "_ref = (uint64_t)" + ty_info.var_name + "_var.inner;\n"
258 opaque_ret_conv_suf = opaque_ret_conv_suf + "if (" + ty_info.var_name + "_var.is_owned) {\n"
259 opaque_ret_conv_suf = opaque_ret_conv_suf + "\t" + ty_info.var_name + "_ref |= 1;\n"
260 opaque_ret_conv_suf = opaque_ret_conv_suf + "}"
263 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
264 arg_conv = opaque_arg_conv, arg_conv_name = "&" + ty_info.var_name + "_conv", arg_conv_cleanup = None,
265 ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = *", opaque_ret_conv_suf),
266 ret_conv_name = ty_info.var_name + "_ref",
267 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),
268 to_hu_conv_name = ty_info.var_name + "_hu_conv",
269 from_hu_conv = from_hu_conv)
271 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
272 arg_conv = opaque_arg_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
273 ret_conv = (ty_info.rust_obj + " " + ty_info.var_name + "_var = ", opaque_ret_conv_suf),
274 ret_conv_name = ty_info.var_name + "_ref",
275 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);",
276 to_hu_conv_name = ty_info.var_name + "_hu_conv",
277 from_hu_conv = from_hu_conv)
279 if not ty_info.is_ptr:
280 if ty_info.rust_obj in self.unitary_enums:
281 (ret_pfx, ret_sfx) = self.consts.c_unitary_enum_to_native_call(ty_info)
282 (arg_pfx, arg_sfx) = self.consts.native_unitary_enum_to_c_call(ty_info)
283 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
284 arg_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = " + arg_pfx + ty_info.var_name + arg_sfx + ";",
285 arg_conv_name = ty_info.var_name + "_conv",
286 arg_conv_cleanup = None,
287 ret_conv = (ty_info.c_ty + " " + ty_info.var_name + "_conv = " + ret_pfx, ret_sfx + ";"),
288 ret_conv_name = ty_info.var_name + "_conv", to_hu_conv = None, to_hu_conv_name = None, from_hu_conv = None)
289 base_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = *(" + ty_info.rust_obj + "*)(((uint64_t)" + ty_info.var_name + ") & ~1);"
290 if ty_info.rust_obj in self.trait_structs:
291 ret_conv = (ty_info.rust_obj + "* ret = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n*ret = ", ";")
293 if (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
294 ret_conv = (ret_conv[0] + ty_info.rust_obj.replace("LDK", "") + "_clone(&", ");")
296 ret_conv = (ret_conv[0], "; // Warning: We likely need to clone here, but no clone is available for " + ty_info.rust_obj)
298 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
299 if needs_full_clone and (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
300 base_conv = base_conv + "\n" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&" + ty_info.var_name + "_conv);"
302 base_conv = base_conv + self.consts.trait_struct_inc_refcnt(ty_info)
304 base_conv = base_conv + "// Warning: we may need a move here but no clone is available for " + ty_info.rust_obj + "\n"
306 base_conv = base_conv + "\n" + "FREE((void*)" + ty_info.var_name + ");"
307 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
308 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
309 ret_conv = ret_conv, ret_conv_name = "(uint64_t)ret",
310 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);",
311 to_hu_conv_name = "ret_hu_conv",
312 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
313 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
315 if "res" in ty_info.var_name: # XXX: This is a stupid hack
316 needs_full_clone = False
317 if needs_full_clone and (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
318 base_conv = base_conv + "\n" + ty_info.var_name + "_conv = " + ty_info.rust_obj.replace("LDK", "") + "_clone((" + ty_info.rust_obj + "*)(((uint64_t)" + ty_info.var_name + ") & ~1));"
319 elif needs_full_clone:
320 base_conv = base_conv + "\n// Warning: we may need a move here but no clone is available for " + ty_info.rust_obj
321 if not needs_full_clone and ty_info.rust_obj != "LDKu8slice" and (not holds_ref or is_free):
322 # Don't bother free'ing slices passed in - Rust doesn't auto-free the
323 # underlying unlike Vecs, and it gives Java more freedom.
324 base_conv = base_conv + "\nFREE((void*)" + ty_info.var_name + ");"
325 if ty_info.rust_obj in self.complex_enums:
326 ret_conv = ("uint64_t " + ty_info.var_name + "_ref = ((uint64_t)&", ") | 1;")
328 ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_copy = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n", "")
329 if ty_info.requires_clone == True: # Set in object array mapping
330 if (ty_info.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns:
331 ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = " + ty_info.rust_obj.replace("LDK", "") + "_clone(&", ");\n")
333 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")
335 ret_conv = (ret_conv[0] + "*" + ty_info.var_name + "_copy = ", ";\n")
336 ret_conv = (ret_conv[0], ret_conv[1] + "uint64_t " + ty_info.var_name + "_ref = (uint64_t)" + ty_info.var_name + "_copy;")
337 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
338 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
339 ret_conv = ret_conv, ret_conv_name = ty_info.var_name + "_ref",
340 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 + ");\n" + ty_info.var_name + "_hu_conv.ptrs_to.add(this);",
341 to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + ".ptr", ""))
342 if ty_info.rust_obj in self.result_types:
344 # If we're trying to return a ref, we have to clone.
345 # We just blindly assume its implemented and let the compiler fail if its not.
346 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 = ", ";")
347 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);")
349 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 = ", ";")
350 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
351 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
352 ret_conv = ret_conv, ret_conv_name = "(uint64_t)" + ty_info.var_name + "_conv",
353 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 + ");",
354 to_hu_conv_name = ty_info.var_name + "_hu_conv", from_hu_conv = (ty_info.var_name + " != null ? " + ty_info.var_name + ".ptr : 0", ""))
355 if ty_info.rust_obj in self.tuple_types:
356 from_hu_conv_sfx = ""
357 from_hu_conv = "bindings." + self.tuple_types[ty_info.rust_obj][1].replace("LDK", "") + "_new("
359 to_hu_conv_sfx = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " + ty_info.java_hu_ty + "("
361 for idx, conv in enumerate(self.tuple_types[ty_info.rust_obj][0]):
363 to_hu_conv_sfx = to_hu_conv_sfx + ", "
364 from_hu_conv = from_hu_conv + ", "
365 conv.var_name = ty_info.var_name + "_" + chr(idx + ord("a"))
366 conv_map = self.map_type_with_info(conv, False, None, is_free, holds_ref)
367 to_hu_conv_pfx = to_hu_conv_pfx + conv.java_ty + " " + ty_info.var_name + "_" + chr(idx + ord("a")) + " = "
368 if not conv.is_native_primitive and (conv_map.rust_obj.replace("LDK", "") + "_clone") in self.clone_fns and conv_map.rust_obj == "LDKTxOut":
369 to_hu_conv_pfx = to_hu_conv_pfx + "bindings." + conv_map.rust_obj.replace("LDK", "") + "_clone("
370 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 + ")"
371 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
372 to_hu_conv_pfx = to_hu_conv_pfx + ")"
373 to_hu_conv_pfx = to_hu_conv_pfx + ";\n"
374 if conv_map.to_hu_conv is not None:
375 to_hu_conv_pfx = to_hu_conv_pfx + conv_map.to_hu_conv + ";\n"
376 to_hu_conv_sfx = to_hu_conv_sfx + conv_map.to_hu_conv_name
377 if to_hu_conv_refs is not None:
378 if conv_map.c_ty.endswith("Array"):
379 to_hu_conv_refs = None
381 to_hu_conv_refs = to_hu_conv_refs + "\n" + conv_map.to_hu_conv_name + ".ptrs_to.add(" + ty_info.var_name + "_conv);"
383 to_hu_conv_sfx = to_hu_conv_sfx + ty_info.var_name + "_" + chr(idx + ord("a"))
384 if conv_map.from_hu_conv is not None:
385 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")))
386 if conv_map.from_hu_conv[1] != "":
387 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")))
389 from_hu_conv = from_hu_conv + ty_info.var_name + "." + chr(idx + ord("a"))
391 if to_hu_conv_refs is None:
392 to_hu_conv = to_hu_conv_pfx + to_hu_conv_sfx + ");\n// Warning: We may not free the C tuple object!"
394 to_hu_conv = to_hu_conv_pfx + to_hu_conv_sfx + ", () -> {\n"
395 to_hu_conv = to_hu_conv + "\tbindings." + ty_info.rust_obj.replace("LDK", "") + "_free(" + ty_info.var_name + ");\n"
396 to_hu_conv = to_hu_conv + "});" + to_hu_conv_refs
397 if not ty_info.is_ptr and not holds_ref:
398 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 = ", ";")
399 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
400 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
402 ret_conv_name = "(uint64_t)" + ty_info.var_name + "_ref",
403 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))
404 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
405 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
406 ret_conv = ("uint64_t " + ty_info.var_name + "_ref = (uint64_t)(&", ") | 1;"), ret_conv_name = ty_info.var_name + "_ref",
407 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))
409 # The manually-defined types - TxOut and u5
410 if ty_info.rust_obj == "LDKu5":
411 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
412 arg_conv = "", arg_conv_name = "(LDKu5){ ._0 = " + ty_info.var_name + " }", arg_conv_cleanup = None,
413 ret_conv = ("uint8_t " + ty_info.var_name + "_val = ", "._0;"), ret_conv_name = ty_info.var_name + "_val",
414 to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " + ty_info.java_hu_ty + "(" + ty_info.var_name + ");",
415 to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (ty_info.var_name + ".getVal()", ""))
417 assert ty_info.rust_obj == "LDKTxOut"
418 if not ty_info.is_ptr and not holds_ref:
419 ret_conv = ("LDKTxOut* " + ty_info.var_name + "_ref = MALLOC(sizeof(LDKTxOut), \"LDKTxOut\");\n*" + ty_info.var_name + "_ref = ", ";")
421 ret_conv = ("uint64_t " + ty_info.var_name + "_ref = ((uint64_t)&", ") | 1;")
422 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
423 arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
424 ret_conv = ret_conv, ret_conv_name = "(uint64_t)" + ty_info.var_name + "_ref",
425 to_hu_conv = ty_info.java_hu_ty + " " + ty_info.var_name + "_conv = new " +ty_info.java_hu_ty + "(null, " + ty_info.var_name + ");",
426 to_hu_conv_name = ty_info.var_name + "_conv", from_hu_conv = (ty_info.var_name + ".ptr", ""))
429 if ty_info.rust_obj in self.complex_enums:
430 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
431 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
432 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
433 ret_conv = ("uint64_t ret_" + ty_info.var_name + " = (uint64_t)", ";"), ret_conv_name = "ret_" + ty_info.var_name,
434 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 + ");",
435 to_hu_conv_name = ty_info.var_name + "_hu_conv",
436 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr & ~1", "this.ptrs_to.add(" + ty_info.var_name + ")"))
437 elif ty_info.rust_obj in self.trait_structs:
438 if ty_info.nonnull_ptr:
439 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)(((uint64_t)" + ty_info.var_name + ") & ~1);"
440 arg_conv_name = ty_info.var_name + "_conv"
442 # We map Option<Trait> as *mut Trait, which we can differentiate from &Trait by the NONNULL_PTR annotation.
443 # We handle the Option<Trait> case here.
444 arg_conv = ty_info.rust_obj + " *" + ty_info.var_name + "_conv_ptr = NULL;\n"
445 arg_conv += "if (" + ty_info.var_name + " != 0) {\n"
446 arg_conv += "\t" + ty_info.rust_obj + " " + ty_info.var_name + "_conv;\n"
447 arg_conv += "\t" + ty_info.var_name + "_conv = *(" + ty_info.rust_obj + "*)(((uint64_t)" + ty_info.var_name + ") & ~1);"
448 arg_conv += self.consts.trait_struct_inc_refcnt(ty_info).replace("\n", "\n\t")
449 arg_conv += "\n\t" + ty_info.var_name + "_conv_ptr = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n"
450 arg_conv += "\t*" + ty_info.var_name + "_conv_ptr = " + ty_info.var_name + "_conv;\n"
452 arg_conv_name = ty_info.var_name + "_conv_ptr"
453 if ty_info.rust_obj.replace("LDK", "") + "_clone" in self.clone_fns:
454 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
455 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = None,
456 ret_conv = (ty_info.rust_obj + " *" + ty_info.var_name + "_clone = MALLOC(sizeof(" + ty_info.rust_obj + "), \"" + ty_info.rust_obj + "\");\n" +
457 "*" + ty_info.var_name + "_clone = " + ty_info.rust_obj.replace("LDK", "") + "_clone(", ");"),
458 ret_conv_name = "(uint64_t)" + ty_info.var_name + "_clone",
459 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);",
460 to_hu_conv_name = "ret_hu_conv",
461 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
463 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
464 arg_conv = arg_conv, arg_conv_name = arg_conv_name, arg_conv_cleanup = None,
465 ret_conv = ("uint64_t ret_" + ty_info.var_name + " = (uint64_t)", ";"), ret_conv_name = "ret_" + ty_info.var_name,
466 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);",
467 to_hu_conv_name = "ret_hu_conv",
468 from_hu_conv = (ty_info.var_name + " == null ? 0 : " + ty_info.var_name + ".ptr", "this.ptrs_to.add(" + ty_info.var_name + ")"))
469 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
470 arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)(" + ty_info.var_name + " & ~1);",
471 arg_conv_name = ty_info.var_name + "_conv", arg_conv_cleanup = None,
472 ret_conv = ("uint64_t ret_" + ty_info.var_name + " = (uint64_t)", ";"), ret_conv_name = "ret_" + ty_info.var_name,
473 to_hu_conv = "TODO 3", to_hu_conv_name = None, from_hu_conv = None) # its a pointer, no conv needed
474 assert False # We should have handled every case by now.