_ Git - ldk-java/blob - genbindings.py

   1 #!/usr/bin/env python3
   2 import sys, re
   3
   4 if len(sys.argv) != 4:
   5     print("USAGE: /path/to/lightning.h /path/to/bindings/output.java /path/to/bindings/output.c")
   6     sys.exit(1)
   7
   8 class TypeInfo:
   9     def __init__(self, rust_obj, java_ty, java_fn_ty_arg, c_ty, passed_as_ptr, is_ptr, var_name, arr_len):
  10         self.rust_obj = rust_obj
  11         self.java_ty = java_ty
  12         self.java_fn_ty_arg = java_fn_ty_arg
  13         self.c_ty = c_ty
  14         self.passed_as_ptr = passed_as_ptr
  15         self.is_ptr = is_ptr
  16         self.var_name = var_name
  17         self.arr_len = arr_len
  18
  19 class ConvInfo:
  20     def __init__(self, ty_info, arg_name, arg_conv, arg_conv_name, ret_conv, ret_conv_name):
  21         assert(ty_info.c_ty is not None)
  22         assert(ty_info.java_ty is not None)
  23         assert(arg_name is not None)
  24         self.c_ty = ty_info.c_ty
  25         self.java_ty = ty_info.java_ty
  26         self.java_fn_ty_arg = ty_info.java_fn_ty_arg
  27         self.arg_name = arg_name
  28         self.arg_conv = arg_conv
  29         self.arg_conv_name = arg_conv_name
  30         self.ret_conv = ret_conv
  31         self.ret_conv_name = ret_conv_name
  32
  33     def print_ty(self):
  34         out_c.write(self.c_ty)
  35         out_java.write(self.java_ty)
  36
  37     def print_name(self):
  38         if self.arg_name != "":
  39             out_java.write(" " + self.arg_name)
  40             out_c.write(" " + self.arg_name)
  41         else:
  42             out_java.write(" arg")
  43             out_c.write(" arg")
  44
  45 with open(sys.argv[1]) as in_h, open(sys.argv[2], "w") as out_java, open(sys.argv[3], "w") as out_c:
  46     opaque_structs = set()
  47
  48     var_is_arr_regex = re.compile("\(\*([A-za-z_]*)\)\[([0-9]*)\]")
  49     var_ty_regex = re.compile("([A-za-z_0-9]*)(.*)")
  50     def java_c_types(fn_arg, ret_arr_len):
  51         fn_arg = fn_arg.strip()
  52         if fn_arg.startswith("MUST_USE_RES "):
  53             fn_arg = fn_arg[13:]
  54         is_const = False
  55         if fn_arg.startswith("const "):
  56             fn_arg = fn_arg[6:]
  57             is_const = True
  58
  59         is_ptr = False
  60         take_by_ptr = False
  61         rust_obj = None
  62         if fn_arg.startswith("void"):
  63             java_ty = "void"
  64             c_ty = "void"
  65             fn_ty_arg = "V"
  66             fn_arg = fn_arg[4:].strip()
  67         elif fn_arg.startswith("bool"):
  68             java_ty = "boolean"
  69             c_ty = "jboolean"
  70             fn_ty_arg = "Z"
  71             fn_arg = fn_arg[4:].strip()
  72         elif fn_arg.startswith("uint8_t"):
  73             java_ty = "byte"
  74             c_ty = "jbyte"
  75             fn_ty_arg = "B"
  76             fn_arg = fn_arg[7:].strip()
  77         elif fn_arg.startswith("uint16_t"):
  78             java_ty = "short"
  79             c_ty = "jshort"
  80             fn_ty_arg = "S"
  81             fn_arg = fn_arg[8:].strip()
  82         elif fn_arg.startswith("uint32_t"):
  83             java_ty = "int"
  84             c_ty = "jint"
  85             fn_ty_arg = "I"
  86             fn_arg = fn_arg[8:].strip()
  87         elif fn_arg.startswith("uint64_t"):
  88             java_ty = "long"
  89             c_ty = "jlong"
  90             fn_ty_arg = "J"
  91             fn_arg = fn_arg[8:].strip()
  92         elif is_const and fn_arg.startswith("char *"):
  93             java_ty = "String"
  94             c_ty = "const char*"
  95             fn_ty_arg = "Ljava/lang/String;"
  96             fn_arg = fn_arg[6:].strip()
  97         else:
  98             ma = var_ty_regex.match(fn_arg)
  99             java_ty = "long"
 100             c_ty = "jlong"
 101             fn_ty_arg = "J"
 102             fn_arg = ma.group(2).strip()
 103             rust_obj = ma.group(1).strip()
 104             take_by_ptr = True
 105
 106         if fn_arg.startswith(" *") or fn_arg.startswith("*"):
 107             fn_arg = fn_arg.replace("*", "").strip()
 108             is_ptr = True
 109             c_ty = "jlong"
 110             java_ty = "long"
 111
 112         var_is_arr = var_is_arr_regex.match(fn_arg)
 113         if var_is_arr is not None or ret_arr_len is not None:
 114             assert(not take_by_ptr)
 115             #assert(not passed_as_ptr)
 116             java_ty = java_ty + "[]"
 117             c_ty = c_ty + "Array"
 118             if var_is_arr is not None:
 119                 return TypeInfo(rust_obj=None, java_ty=java_ty, java_fn_ty_arg="[" + fn_ty_arg, c_ty=c_ty, passed_as_ptr=is_ptr,
 120                     is_ptr=False, var_name=var_is_arr.group(1), arr_len=var_is_arr.group(2))
 121         return TypeInfo(rust_obj=rust_obj, java_ty=java_ty, java_fn_ty_arg=fn_ty_arg, c_ty=c_ty, passed_as_ptr=is_ptr or take_by_ptr,
 122             is_ptr=is_ptr, var_name=fn_arg, arr_len=None)
 123
 124     def map_type(fn_arg, print_void, ret_arr_len, is_free):
 125         ty_info = java_c_types(fn_arg, ret_arr_len)
 126
 127         if ty_info.c_ty == "void":
 128             if not print_void:
 129                 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 130                     arg_conv = None, arg_conv_name = None, ret_conv = None, ret_conv_name = None)
 131
 132         if ty_info.c_ty.endswith("Array"):
 133             arr_len = ty_info.arr_len
 134             if arr_len is not None:
 135                 arr_name = ty_info.var_name
 136             else:
 137                 arr_name = "ret"
 138                 arr_len = ret_arr_len
 139             assert(ty_info.c_ty == "jbyteArray")
 140             return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 141                 arg_conv = "unsigned char " + arr_name + "_arr[" + arr_len + "];\n" +
 142                     "(*_env)->GetByteArrayRegion (_env, """ + arr_name + ", 0, " + arr_len + ", " + arr_name + "_arr);\n" +
 143                     "unsigned char (*""" + arr_name + "_ref)[" + arr_len + "] = &" + arr_name + "_arr;",
 144                 arg_conv_name = arr_name + "_ref",
 145                 ret_conv = ("jbyteArray " + arr_name + "_arr = (*_env)->NewByteArray(_env, " + arr_len + ");\n" +
 146                     "(*_env)->SetByteArrayRegion(_env, " + arr_name + "_arr, 0, " + arr_len + ", *",
 147                     ");"),
 148                 ret_conv_name = arr_name + "_arr")
 149         elif ty_info.var_name != "":
 150             # If we have a parameter name, print it (noting that it may indicate its a pointer)
 151             if ty_info.rust_obj is not None:
 152                 assert(ty_info.passed_as_ptr)
 153                 if not ty_info.is_ptr:
 154                     base_conv = ty_info.rust_obj + " " + ty_info.var_name + "_conv = *(" + ty_info.rust_obj + "*)" + ty_info.var_name + ";\nfree((void*)" + ty_info.var_name + ");";
 155                     if ty_info.rust_obj in opaque_structs:
 156                         return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 157                             arg_conv = base_conv + "\n" + ty_info.var_name + "_conv._underlying_ref = false;",
 158                             arg_conv_name = ty_info.var_name + "_conv",
 159                             ret_conv = None, ret_conv_name = None)
 160                     return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 161                         arg_conv = base_conv, arg_conv_name = ty_info.var_name + "_conv",
 162                         ret_conv = None, ret_conv_name = None)
 163                 else:
 164                     assert(not is_free)
 165                     return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 166                         arg_conv = ty_info.rust_obj + "* " + ty_info.var_name + "_conv = (" + ty_info.rust_obj + "*)" + ty_info.var_name + ";",
 167                         arg_conv_name = ty_info.var_name + "_conv",
 168                         ret_conv = None, ret_conv_name = None)
 169             elif ty_info.is_ptr:
 170                 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 171                     arg_conv = None, arg_conv_name = ty_info.var_name, ret_conv = None, ret_conv_name = None)
 172             else:
 173                 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 174                     arg_conv = None, arg_conv_name = ty_info.var_name, ret_conv = None, ret_conv_name = None)
 175         elif not print_void:
 176             # We don't have a parameter name, and want one, just call it arg
 177             if ty_info.rust_obj is not None:
 178                 assert(not is_free or ty_info.rust_obj not in opaque_structs);
 179                 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 180                     arg_conv = ty_info.rust_obj + " arg_conv = *(" + ty_info.rust_obj + "*)arg;\nfree((void*)arg);",
 181                     arg_conv_name = "arg_conv",
 182                     ret_conv = None, ret_conv_name = None)
 183             else:
 184                 assert(not is_free)
 185                 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 186                     arg_conv = None, arg_conv_name = "arg", ret_conv = None, ret_conv_name = None)
 187         else:
 188             # We don't have a parameter name, and don't want one (cause we're returning)
 189             if ty_info.rust_obj is not None:
 190                 if not ty_info.is_ptr:
 191                     if ty_info.rust_obj in opaque_structs:
 192                         # If we're returning a newly-allocated struct, we don't want Rust to ever
 193                         # free, instead relying on the Java GC to lose the ref. We undo this in
 194                         # any _free function.
 195                         # To avoid any issues, we first assert that the incoming object is non-ref.
 196                         return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 197                             ret_conv = (ty_info.rust_obj + "* ret = malloc(sizeof(" + ty_info.rust_obj + "));\n*ret = ", ";\nassert(!ret->_underlying_ref);\nret->_underlying_ref = true;"),
 198                             ret_conv_name = "(long)ret",
 199                             arg_conv = None, arg_conv_name = None)
 200                     else:
 201                         return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 202                             ret_conv = (ty_info.rust_obj + "* ret = malloc(sizeof(" + ty_info.rust_obj + "));\n*ret = ", ";"),
 203                             ret_conv_name = "(long)ret",
 204                             arg_conv = None, arg_conv_name = None)
 205                 else:
 206                     return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 207                         ret_conv = ("long ret = (long)", ";"), ret_conv_name = "ret",
 208                         arg_conv = None, arg_conv_name = None)
 209             else:
 210                 return ConvInfo(ty_info = ty_info, arg_name = ty_info.var_name,
 211                     arg_conv = None, arg_conv_name = None, ret_conv = None, ret_conv_name = None)
 212
 213     def map_fn(re_match, ret_arr_len):
 214         out_java.write("\t/// " + line)
 215         out_java.write("\tpublic static native ")
 216         out_c.write("JNIEXPORT ")
 217
 218         ret_info = map_type(re_match.group(1), True, ret_arr_len, False)
 219         ret_info.print_ty()
 220         if ret_info.ret_conv is not None:
 221             ret_conv_pfx, ret_conv_sfx = ret_info.ret_conv
 222
 223         out_java.write(" " + re_match.group(2) + "(")
 224         out_c.write(" JNICALL Java_org_ldk_impl_bindings_" + re_match.group(2).replace('_', '_1') + "(JNIEnv * _env, jclass _b")
 225
 226         arg_names = []
 227         for idx, arg in enumerate(re_match.group(3).split(',')):
 228             if idx != 0:
 229                 out_java.write(", ")
 230             if arg != "void":
 231                 out_c.write(", ")
 232             arg_conv_info = map_type(arg, False, None, re_match.group(2).endswith("_free"))
 233             if arg_conv_info.c_ty != "void":
 234                 arg_conv_info.print_ty()
 235                 arg_conv_info.print_name()
 236             arg_names.append(arg_conv_info)
 237
 238         out_java.write(");\n")
 239         out_c.write(") {\n")
 240
 241         for info in arg_names:
 242             if info.arg_conv is not None:
 243                 out_c.write("\t" + info.arg_conv.replace('\n', "\n\t") + "\n");
 244
 245         if ret_info.ret_conv is not None:
 246             out_c.write("\t" + ret_conv_pfx.replace('\n', '\n\t'));
 247         else:
 248             out_c.write("\treturn ");
 249
 250         out_c.write(re_match.group(2) + "(")
 251         for idx, info in enumerate(arg_names):
 252             if info.arg_conv_name is not None:
 253                 if idx != 0:
 254                     out_c.write(", ")
 255                 out_c.write(info.arg_conv_name)
 256         out_c.write(")")
 257         if ret_info.ret_conv is not None:
 258             out_c.write(ret_conv_sfx.replace('\n', '\n\t'))
 259             out_c.write("\n\treturn " + ret_info.ret_conv_name + ";")
 260         else:
 261             out_c.write(";")
 262         out_c.write("\n}\n\n")
 263
 264     out_java.write("""package org.ldk.impl;
 265
 266 public class bindings {
 267         static {
 268                 System.loadLibrary(\"lightningjni\");
 269         }
 270
 271 """)
 272     out_c.write("#include \"org_ldk_impl_bindings.h\"\n")
 273     out_c.write("#include <rust_types.h>\n")
 274     out_c.write("#include <lightning.h>\n")
 275     out_c.write("#include <assert.h>\n\n")
 276     out_c.write("#include <string.h>\n\n")
 277
 278     in_block_comment = False
 279     in_block_enum = False
 280     cur_block_struct = None
 281     in_block_union = False
 282
 283     fn_ptr_regex = re.compile("^extern const ([A-Za-z_0-9\* ]*) \(\*(.*)\)\((.*)\);$")
 284     fn_ret_arr_regex = re.compile("(.*) \(\*(.*)\((.*)\)\)\[([0-9]*)\];$")
 285     reg_fn_regex = re.compile("([A-Za-z_0-9\* ]* \*?)([a-zA-Z_0-9]*)\((.*)\);$")
 286     const_val_regex = re.compile("^extern const ([A-Za-z_0-9]*) ([A-Za-z_0-9]*);$")
 287
 288     line_indicates_opaque_regex = re.compile("^   bool _underlying_ref;$")
 289     line_indicates_trait_regex = re.compile("^   ([A-Za-z_0-9]* \*?)\(\*([A-Za-z_0-9]*)\)\((const )?void \*this_arg(.*)\);$")
 290     assert(line_indicates_trait_regex.match("   uintptr_t (*send_data)(void *this_arg, LDKu8slice data, bool resume_read);"))
 291     assert(line_indicates_trait_regex.match("   LDKCVec_MessageSendEventZ (*get_and_clear_pending_msg_events)(const void *this_arg);"))
 292     assert(line_indicates_trait_regex.match("   void *(*clone)(const void *this_arg);"))
 293     struct_name_regex = re.compile("^typedef struct (MUST_USE_STRUCT )?(LDK[A-Za-z_0-9]*) {$")
 294     assert(struct_name_regex.match("typedef struct LDKCVecTempl_u8 {"))
 295
 296     for line in in_h:
 297         if in_block_comment:
 298             #out_java.write("\t" + line)
 299             if line.endswith("*/\n"):
 300                 in_block_comment = False
 301         elif cur_block_struct is not None:
 302             cur_block_struct  = cur_block_struct + line
 303             if line.startswith("} "):
 304                 field_lines = []
 305                 struct_name = None
 306                 struct_lines = cur_block_struct.split("\n")
 307                 is_opaque = False
 308                 trait_fn_lines = []
 309
 310                 for idx, struct_line in enumerate(struct_lines):
 311                     if struct_line.strip().startswith("/*"):
 312                         in_block_comment = True
 313                     if in_block_comment:
 314                         if struct_line.endswith("*/"):
 315                             in_block_comment = False
 316                     else:
 317                         struct_name_match = struct_name_regex.match(struct_line)
 318                         if struct_name_match is not None:
 319                             struct_name = struct_name_match.group(2)
 320                         if line_indicates_opaque_regex.match(struct_line):
 321                             is_opaque = True
 322                         trait_fn_match = line_indicates_trait_regex.match(struct_line)
 323                         if trait_fn_match is not None:
 324                             trait_fn_lines.append(trait_fn_match)
 325                         field_lines.append(struct_line)
 326
 327                 assert(struct_name is not None)
 328                 assert(len(trait_fn_lines) == 0 or not is_opaque)
 329                 if is_opaque:
 330                     opaque_structs.add(struct_name)
 331                 if len(trait_fn_lines) > 0:
 332                     out_c.write("typedef struct " + struct_name + "_JCalls {\n")
 333                     out_c.write("\tJNIEnv *env;\n")
 334                     out_c.write("\tjobject o;\n")
 335                     for fn_line in trait_fn_lines:
 336                         if fn_line.group(2) != "free" and fn_line.group(2) != "clone":
 337                             out_c.write("\tjmethodID " + fn_line.group(2) + "_meth;\n")
 338                     out_c.write("} " + struct_name + "_JCalls;\n")
 339
 340                     out_java.write("\tpublic interface " + struct_name + " {\n")
 341                     java_meths = []
 342                     for fn_line in trait_fn_lines:
 343                         java_meth_descr = "("
 344                         if fn_line.group(2) != "free" and fn_line.group(2) != "clone":
 345                             ret_ty_info = java_c_types(fn_line.group(1), None)
 346
 347                             out_java.write("\t\t " + ret_ty_info.java_ty + " " + fn_line.group(2) + "(")
 348                             is_const = fn_line.group(3) is not None
 349                             out_c.write(fn_line.group(1) + fn_line.group(2) + "_jcall(")
 350                             if is_const:
 351                                 out_c.write("const void* this_arg")
 352                             else:
 353                                 out_c.write("void* this_arg")
 354
 355                             arg_names = []
 356                             for idx, arg in enumerate(fn_line.group(4).split(',')):
 357                                 if arg == "":
 358                                     continue
 359                                 if idx >= 2:
 360                                     out_java.write(", ")
 361                                 out_c.write(", ")
 362                                 arg_conv_info = map_type(arg, True, None, False)
 363                                 out_c.write(arg.strip())
 364                                 out_java.write(arg_conv_info.java_ty + " " + arg_conv_info.arg_name)
 365                                 arg_names.append(arg_conv_info)
 366                                 java_meth_descr = java_meth_descr + arg_conv_info.java_fn_ty_arg
 367                             java_meth_descr = java_meth_descr + ")" + ret_ty_info.java_fn_ty_arg
 368                             java_meths.append(java_meth_descr)
 369
 370                             out_java.write(");\n")
 371                             out_c.write(") {\n")
 372                             out_c.write("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n")
 373
 374                             for arg_info in arg_names:
 375                                 if arg_info.ret_conv is not None:
 376                                     out_c.write("\t" + arg_info.ret_conv[0].replace('\n', '\n\t').replace("_env", "j_calls->env"));
 377                                     out_c.write(arg_info.arg_name)
 378                                     out_c.write(arg_info.ret_conv[1].replace('\n', '\n\t').replace("_env", "j_calls->env") + "\n")
 379
 380                             if not ret_ty_info.passed_as_ptr:
 381                                 out_c.write("\treturn (*j_calls->env)->Call" + ret_ty_info.java_ty.title() + "Method(j_calls->env, j_calls->o, j_calls->" + fn_line.group(2) + "_meth")
 382                             else:
 383                                 out_c.write("\t" + fn_line.group(1).strip() + "* ret = (" + fn_line.group(1).strip() + "*)(*j_calls->env)->CallLongMethod(j_calls->env, j_calls->o, j_calls->" + fn_line.group(2) + "_meth");
 384
 385                             for arg_info in arg_names:
 386                                 if arg_info.ret_conv is not None:
 387                                     out_c.write(", " + arg_info.ret_conv_name)
 388                                 else:
 389                                     out_c.write(", " + arg_info.arg_name)
 390                             out_c.write(");\n");
 391
 392                             if ret_ty_info.passed_as_ptr:
 393                                 out_c.write("\t" + fn_line.group(1).strip() + " res = *ret;\n")
 394                                 out_c.write("\tfree(ret);\n")
 395                                 out_c.write("\treturn res;\n")
 396                             out_c.write("}\n")
 397                         elif fn_line.group(2) == "free":
 398                             out_c.write("void " + struct_name + "_JCalls_free(void* this_arg) {\n")
 399                             out_c.write("\t" + struct_name + "_JCalls *j_calls = (" + struct_name + "_JCalls*) this_arg;\n")
 400                             out_c.write("\t(*j_calls->env)->DeleteGlobalRef(j_calls->env, j_calls->o);\n")
 401                             out_c.write("\tfree(j_calls);\n")
 402                             out_c.write("}\n")
 403                         elif fn_line.group(2) == "clone":
 404                             out_c.write("void* " + struct_name + "_JCalls_clone(const void* this_arg) {\n")
 405                             out_c.write("\t" + struct_name + "_JCalls *ret = malloc(sizeof(" + struct_name + "_JCalls));\n")
 406                             out_c.write("\tmemcpy(ret, this_arg, sizeof(" + struct_name + "_JCalls));\n")
 407                             out_c.write("\treturn ret;\n")
 408                             out_c.write("}\n")
 409                     out_java.write("\t}\n")
 410                     out_java.write("\tpublic static native long " + struct_name + "_new(" + struct_name + " impl);\n")
 411
 412                     out_c.write("JNIEXPORT long JNICALL Java_org_ldk_impl_bindings_" + struct_name.replace("_", "_1") + "_1new (JNIEnv * env, jclass _a, jobject o) {\n")
 413                     out_c.write("\tjclass c = (*env)->GetObjectClass(env, o);\n")
 414                     out_c.write("\tassert(c != NULL);\n")
 415                     out_c.write("\t" + struct_name + "_JCalls *calls = malloc(sizeof(" + struct_name + "_JCalls));\n")
 416                     out_c.write("\tcalls->env = env;\n")
 417                     out_c.write("\tcalls->o = (*env)->NewGlobalRef(env, o);\n")
 418                     for (fn_line, java_meth_descr) in zip(trait_fn_lines, java_meths):
 419                         if fn_line.group(2) != "free" and fn_line.group(2) != "clone":
 420                             out_c.write("\tcalls->" + fn_line.group(2) + "_meth = (*env)->GetMethodID(env, c, \"" + fn_line.group(2) + "\", \"" + java_meth_descr + "\");\n")
 421                             out_c.write("\tassert(calls->" + fn_line.group(2) + "_meth != NULL);\n")
 422                     out_c.write("\n\t" + struct_name + " *ret = malloc(sizeof(" + struct_name + "));\n")
 423                     out_c.write("\tret->this_arg = (void*) calls;\n")
 424                     for fn_line in trait_fn_lines:
 425                         if fn_line.group(2) != "free" and fn_line.group(2) != "clone":
 426                             out_c.write("\tret->" + fn_line.group(2) + " = " + fn_line.group(2) + "_jcall;\n")
 427                         elif fn_line.group(2) == "free":
 428                             out_c.write("\tret->free = " + struct_name + "_JCalls_free;\n")
 429                         else:
 430                             out_c.write("\tret->clone = " + struct_name + "_JCalls_clone;\n")
 431                     out_c.write("\treturn (long)ret;\n")
 432                     out_c.write("}\n\n")
 433
 434                     #out_java.write("/* " + "\n".join(field_lines) + "*/\n")
 435                 cur_block_struct = None
 436         elif in_block_union:
 437             if line.startswith("} "):
 438                 in_block_union = False
 439         elif in_block_enum:
 440             if line.startswith("} "):
 441                 in_block_enum = False
 442         else:
 443             fn_ptr = fn_ptr_regex.match(line)
 444             fn_ret_arr = fn_ret_arr_regex.match(line)
 445             reg_fn = reg_fn_regex.match(line)
 446             const_val = const_val_regex.match(line)
 447
 448             if line.startswith("#include <"):
 449                 pass
 450             elif line.startswith("/*"):
 451                 #out_java.write("\t" + line)
 452                 if not line.endswith("*/\n"):
 453                     in_block_comment = True
 454             elif line.startswith("typedef enum "):
 455                 in_block_enum = True
 456             elif line.startswith("typedef struct "):
 457                 cur_block_struct = line
 458             elif line.startswith("typedef union "):
 459                 in_block_union = True
 460             elif line.startswith("typedef "):
 461                 pass
 462             elif fn_ptr is not None:
 463                 map_fn(fn_ptr, None)
 464             elif fn_ret_arr is not None:
 465                 map_fn(fn_ret_arr, fn_ret_arr.group(4))
 466             elif reg_fn is not None:
 467                 map_fn(reg_fn, None)
 468             elif const_val_regex is not None:
 469                 # TODO Map const variables
 470                 pass
 471             else:
 472                 assert(line == "\n")
 473
 474     out_java.write("}\n")