Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1 | //===-- Mangled.cpp ---------------------------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include <cxxabi.h> |
| 11 | |
Greg Clayton | e33bdd3 | 2010-09-03 23:26:12 +0000 | [diff] [blame] | 12 | #include "llvm/ADT/DenseMap.h" |
| 13 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 14 | #include "lldb/Core/ConstString.h" |
| 15 | #include "lldb/Core/Mangled.h" |
Greg Clayton | 3bc52d0 | 2010-11-14 22:13:40 +0000 | [diff] [blame] | 16 | #include "lldb/Core/RegularExpression.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 17 | #include "lldb/Core/Stream.h" |
| 18 | #include "lldb/Core/Timer.h" |
Eli Friedman | a408326 | 2010-06-09 08:50:27 +0000 | [diff] [blame] | 19 | #include <ctype.h> |
| 20 | #include <string.h> |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 21 | |
| 22 | using namespace lldb_private; |
| 23 | |
| 24 | #pragma mark Mangled |
| 25 | //---------------------------------------------------------------------- |
| 26 | // Default constructor |
| 27 | //---------------------------------------------------------------------- |
| 28 | Mangled::Mangled () : |
| 29 | m_mangled(), |
| 30 | m_demangled() |
| 31 | { |
| 32 | } |
| 33 | |
| 34 | //---------------------------------------------------------------------- |
| 35 | // Constructor with an optional string and a boolean indicating if it is |
| 36 | // the mangled version. |
| 37 | //---------------------------------------------------------------------- |
| 38 | Mangled::Mangled (const char *s, bool mangled) : |
| 39 | m_mangled(), |
| 40 | m_demangled() |
| 41 | { |
| 42 | if (s && s[0]) |
| 43 | { |
| 44 | SetValue(s, mangled); |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | //---------------------------------------------------------------------- |
| 49 | // Destructor |
| 50 | //---------------------------------------------------------------------- |
| 51 | Mangled::~Mangled () |
| 52 | { |
| 53 | } |
| 54 | |
| 55 | //---------------------------------------------------------------------- |
| 56 | // Convert to pointer operator. This allows code to check any Mangled |
| 57 | // objects to see if they contain anything valid using code such as: |
| 58 | // |
| 59 | // Mangled mangled(...); |
| 60 | // if (mangled) |
| 61 | // { ... |
| 62 | //---------------------------------------------------------------------- |
| 63 | Mangled::operator void* () const |
| 64 | { |
| 65 | return (m_mangled) ? const_cast<Mangled*>(this) : NULL; |
| 66 | } |
| 67 | |
| 68 | //---------------------------------------------------------------------- |
| 69 | // Logical NOT operator. This allows code to check any Mangled |
| 70 | // objects to see if they are invalid using code such as: |
| 71 | // |
| 72 | // Mangled mangled(...); |
| 73 | // if (!file_spec) |
| 74 | // { ... |
| 75 | //---------------------------------------------------------------------- |
| 76 | bool |
| 77 | Mangled::operator! () const |
| 78 | { |
| 79 | return !m_mangled; |
| 80 | } |
| 81 | |
| 82 | //---------------------------------------------------------------------- |
| 83 | // Clear the mangled and demangled values. |
| 84 | //---------------------------------------------------------------------- |
| 85 | void |
| 86 | Mangled::Clear () |
| 87 | { |
| 88 | m_mangled.Clear(); |
| 89 | m_demangled.Clear(); |
| 90 | } |
| 91 | |
| 92 | |
| 93 | //---------------------------------------------------------------------- |
| 94 | // Compare the the string values. |
| 95 | //---------------------------------------------------------------------- |
| 96 | int |
| 97 | Mangled::Compare (const Mangled& a, const Mangled& b) |
| 98 | { |
Jim Ingham | beea052 | 2010-09-15 00:13:44 +0000 | [diff] [blame] | 99 | return ConstString::Compare(a.GetName(ePreferMangled), a.GetName(ePreferMangled)); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | |
| 103 | |
| 104 | //---------------------------------------------------------------------- |
| 105 | // Set the string value in this objects. If "mangled" is true, then |
| 106 | // the mangled named is set with the new value in "s", else the |
| 107 | // demangled name is set. |
| 108 | //---------------------------------------------------------------------- |
| 109 | void |
| 110 | Mangled::SetValue (const char *s, bool mangled) |
| 111 | { |
| 112 | m_mangled.Clear(); |
| 113 | m_demangled.Clear(); |
| 114 | |
| 115 | if (s) |
| 116 | { |
| 117 | if (mangled) |
| 118 | m_mangled.SetCString (s); |
| 119 | else |
| 120 | m_demangled.SetCString(s); |
| 121 | } |
| 122 | } |
| 123 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 124 | //---------------------------------------------------------------------- |
| 125 | // Generate the demangled name on demand using this accessor. Code in |
| 126 | // this class will need to use this accessor if it wishes to decode |
| 127 | // the demangled name. The result is cached and will be kept until a |
| 128 | // new string value is supplied to this object, or until the end of the |
| 129 | // object's lifetime. |
| 130 | //---------------------------------------------------------------------- |
| 131 | const ConstString& |
| 132 | Mangled::GetDemangledName () const |
| 133 | { |
| 134 | // Check to make sure we have a valid mangled name and that we |
| 135 | // haven't already decoded our mangled name. |
| 136 | if (m_mangled && !m_demangled) |
| 137 | { |
| 138 | // We need to generate and cache the demangled name. |
| 139 | Timer scoped_timer (__PRETTY_FUNCTION__, |
| 140 | "Mangled::GetDemangledName (m_mangled = %s)", |
| 141 | m_mangled.GetCString()); |
| 142 | |
| 143 | // We already know mangled is valid from the above check, |
| 144 | // lets just make sure it isn't empty... |
| 145 | const char * mangled = m_mangled.AsCString(); |
Jason Molenda | 6983cda | 2010-12-15 04:20:25 +0000 | [diff] [blame] | 146 | // Don't bother running anything that doesn't start with _Z through the demangler |
| 147 | if (mangled[0] != '\0' && mangled[0] == '_' && mangled[1] == 'Z') |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 148 | { |
Greg Clayton | e33bdd3 | 2010-09-03 23:26:12 +0000 | [diff] [blame] | 149 | // Since demangling can be a costly, and since all names that go |
| 150 | // into a ConstString (like our m_mangled and m_demangled members) |
| 151 | // end up being unique "const char *" values, we can use a DenseMap |
| 152 | // to speed up our lookup. We do this because often our symbol table |
| 153 | // and our debug information both have the mangled names which they |
| 154 | // would each need to demangle. Also, with GCC we end up with the one |
| 155 | // definition rule where a lot of STL code produces symbols that are |
| 156 | // in multiple compile units and the mangled names end up being in |
| 157 | // the same binary multiple times. The performance win isn't huge, |
| 158 | // but we showed a 20% improvement on darwin. |
| 159 | typedef llvm::DenseMap<const char *, const char *> MangledToDemangledMap; |
| 160 | static MangledToDemangledMap g_mangled_to_demangled; |
Benjamin Kramer | 7d25348 | 2010-06-22 15:28:29 +0000 | [diff] [blame] | 161 | |
Greg Clayton | e33bdd3 | 2010-09-03 23:26:12 +0000 | [diff] [blame] | 162 | // Check our mangled string pointer to demangled string pointer map first |
| 163 | MangledToDemangledMap::const_iterator pos = g_mangled_to_demangled.find (mangled); |
| 164 | if (pos != g_mangled_to_demangled.end()) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 165 | { |
Greg Clayton | e33bdd3 | 2010-09-03 23:26:12 +0000 | [diff] [blame] | 166 | // We have already demangled this string, we can just use our saved result! |
| 167 | m_demangled.SetCString(pos->second); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 168 | } |
| 169 | else |
| 170 | { |
Greg Clayton | e33bdd3 | 2010-09-03 23:26:12 +0000 | [diff] [blame] | 171 | // We didn't already mangle this name, demangle it and if all goes well |
| 172 | // add it to our map. |
| 173 | char *demangled_name = abi::__cxa_demangle (mangled, NULL, NULL, NULL); |
| 174 | |
| 175 | if (demangled_name) |
| 176 | { |
| 177 | m_demangled.SetCString (demangled_name); |
| 178 | // Now that the name has been uniqued, add the uniqued C string |
| 179 | // pointer from m_mangled as the key to the uniqued C string |
| 180 | // pointer in m_demangled. |
| 181 | g_mangled_to_demangled.insert (std::make_pair (mangled, m_demangled.GetCString())); |
| 182 | free (demangled_name); |
| 183 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 184 | } |
| 185 | } |
Jason Molenda | 5d1ff14 | 2010-12-15 04:27:04 +0000 | [diff] [blame^] | 186 | if (!m_demangled) |
| 187 | { |
| 188 | // Set the demangled string to the empty string to indicate we |
| 189 | // tried to parse it once and failed. |
| 190 | m_demangled.SetCString(""); |
| 191 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | return m_demangled; |
| 195 | } |
| 196 | |
Greg Clayton | 3bc52d0 | 2010-11-14 22:13:40 +0000 | [diff] [blame] | 197 | |
| 198 | bool |
| 199 | Mangled::NameMatches (const RegularExpression& regex) const |
| 200 | { |
| 201 | if (m_mangled && regex.Execute (m_mangled.AsCString())) |
| 202 | return true; |
| 203 | |
| 204 | if (GetDemangledName() && regex.Execute (m_demangled.AsCString())) |
| 205 | return true; |
| 206 | return false; |
| 207 | } |
| 208 | |
| 209 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 210 | //---------------------------------------------------------------------- |
| 211 | // Mangled name get accessor |
| 212 | //---------------------------------------------------------------------- |
| 213 | ConstString& |
| 214 | Mangled::GetMangledName () |
| 215 | { |
| 216 | return m_mangled; |
| 217 | } |
| 218 | |
| 219 | //---------------------------------------------------------------------- |
| 220 | // Mangled name const get accessor |
| 221 | //---------------------------------------------------------------------- |
| 222 | const ConstString& |
| 223 | Mangled::GetMangledName () const |
| 224 | { |
| 225 | return m_mangled; |
| 226 | } |
| 227 | |
| 228 | //---------------------------------------------------------------------- |
| 229 | // Get the demangled name if there is one, else return the mangled name. |
| 230 | //---------------------------------------------------------------------- |
| 231 | const ConstString& |
Jim Ingham | 17454cf | 2010-09-14 22:03:00 +0000 | [diff] [blame] | 232 | Mangled::GetName (Mangled::NamePreference preference) const |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 233 | { |
Greg Clayton | 251de2a | 2010-09-14 23:44:49 +0000 | [diff] [blame] | 234 | if (preference == ePreferDemangled) |
Jim Ingham | 17454cf | 2010-09-14 22:03:00 +0000 | [diff] [blame] | 235 | { |
Greg Clayton | 0298782 | 2010-09-14 23:48:44 +0000 | [diff] [blame] | 236 | // Call the accessor to make sure we get a demangled name in case |
| 237 | // it hasn't been demangled yet... |
| 238 | if (GetDemangledName()) |
| 239 | return m_demangled; |
Greg Clayton | 251de2a | 2010-09-14 23:44:49 +0000 | [diff] [blame] | 240 | return m_mangled; |
| 241 | } |
| 242 | else |
| 243 | { |
Greg Clayton | 0298782 | 2010-09-14 23:48:44 +0000 | [diff] [blame] | 244 | if (m_mangled) |
| 245 | return m_mangled; |
| 246 | return GetDemangledName(); |
Jim Ingham | 17454cf | 2010-09-14 22:03:00 +0000 | [diff] [blame] | 247 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | //---------------------------------------------------------------------- |
| 251 | // Generate the tokens from the demangled name. |
| 252 | // |
| 253 | // Returns the number of tokens that were parsed. |
| 254 | //---------------------------------------------------------------------- |
| 255 | size_t |
| 256 | Mangled::GetTokens (Mangled::TokenList &tokens) const |
| 257 | { |
| 258 | tokens.Clear(); |
| 259 | const ConstString& demangled = GetDemangledName(); |
| 260 | if (demangled && !demangled.IsEmpty()) |
| 261 | tokens.Parse(demangled.AsCString()); |
| 262 | |
| 263 | return tokens.Size(); |
| 264 | } |
| 265 | |
| 266 | //---------------------------------------------------------------------- |
| 267 | // Dump a Mangled object to stream "s". We don't force our |
| 268 | // demangled name to be computed currently (we don't use the accessor). |
| 269 | //---------------------------------------------------------------------- |
| 270 | void |
| 271 | Mangled::Dump (Stream *s) const |
| 272 | { |
| 273 | if (m_mangled) |
| 274 | { |
| 275 | *s << ", mangled = " << m_mangled; |
| 276 | } |
| 277 | if (m_demangled) |
| 278 | { |
| 279 | const char * demangled = m_demangled.AsCString(); |
| 280 | s->Printf(", demangled = %s", demangled[0] ? demangled : "<error>"); |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | //---------------------------------------------------------------------- |
| 285 | // Dumps a debug version of this string with extra object and state |
| 286 | // information to stream "s". |
| 287 | //---------------------------------------------------------------------- |
| 288 | void |
| 289 | Mangled::DumpDebug (Stream *s) const |
| 290 | { |
| 291 | s->Printf("%*p: Mangled mangled = ", (int)sizeof(void*) * 2, this); |
| 292 | m_mangled.DumpDebug(s); |
| 293 | s->Printf(", demangled = "); |
| 294 | m_demangled.DumpDebug(s); |
| 295 | } |
| 296 | |
| 297 | //---------------------------------------------------------------------- |
| 298 | // Return the size in byte that this object takes in memory. The size |
| 299 | // includes the size of the objects it owns, and not the strings that |
| 300 | // it references because they are shared strings. |
| 301 | //---------------------------------------------------------------------- |
| 302 | size_t |
| 303 | Mangled::MemorySize () const |
| 304 | { |
| 305 | return m_mangled.MemorySize() + m_demangled.MemorySize(); |
| 306 | } |
| 307 | |
| 308 | //---------------------------------------------------------------------- |
| 309 | // Dump OBJ to the supplied stream S. |
| 310 | //---------------------------------------------------------------------- |
| 311 | Stream& |
| 312 | operator << (Stream& s, const Mangled& obj) |
| 313 | { |
| 314 | if (obj.GetMangledName()) |
| 315 | s << "mangled = '" << obj.GetMangledName() << "'"; |
| 316 | |
| 317 | const ConstString& demangled = obj.GetDemangledName(); |
| 318 | if (demangled) |
| 319 | s << ", demangled = '" << demangled << '\''; |
| 320 | else |
| 321 | s << ", demangled = <error>"; |
| 322 | return s; |
| 323 | } |
| 324 | |
| 325 | |
| 326 | |
| 327 | |
| 328 | #pragma mark Mangled::Token |
| 329 | |
| 330 | //-------------------------------------------------------------- |
| 331 | // Default constructor |
| 332 | //-------------------------------------------------------------- |
| 333 | Mangled::Token::Token () : |
| 334 | type(eInvalid), |
| 335 | value() |
| 336 | { |
| 337 | } |
| 338 | |
| 339 | //-------------------------------------------------------------- |
| 340 | // Equal to operator |
| 341 | //-------------------------------------------------------------- |
| 342 | bool |
| 343 | Mangled::Token::operator== (const Token& rhs) const |
| 344 | { |
| 345 | return type == rhs.type && value == rhs.value; |
| 346 | } |
| 347 | |
| 348 | //-------------------------------------------------------------- |
| 349 | // Dump the token to a stream "s" |
| 350 | //-------------------------------------------------------------- |
| 351 | void |
| 352 | Mangled::Token::Dump (Stream *s) const |
| 353 | { |
| 354 | switch (type) |
| 355 | { |
| 356 | case eInvalid: s->PutCString("invalid "); break; |
| 357 | case eNameSpace: s->PutCString("namespace "); break; |
| 358 | case eMethodName: s->PutCString("method "); break; |
| 359 | case eType: s->PutCString("type "); break; |
| 360 | case eTemplate: s->PutCString("template "); break; |
| 361 | case eTemplateBeg: s->PutCString("template < "); break; |
| 362 | case eTemplateEnd: s->PutCString("template > "); break; |
| 363 | case eParamsBeg: s->PutCString("params ( "); break; |
| 364 | case eParamsEnd: s->PutCString("params ) "); break; |
| 365 | case eQualifier: s->PutCString("qualifier "); break; |
| 366 | case eError: s->PutCString("ERROR "); break; |
| 367 | default: |
| 368 | s->Printf("type = %i", type); |
| 369 | break; |
| 370 | } |
| 371 | value.DumpDebug(s); |
| 372 | } |
| 373 | |
| 374 | //-------------------------------------------------------------- |
| 375 | // Returns true if this token is a wildcard |
| 376 | //-------------------------------------------------------------- |
| 377 | bool |
| 378 | Mangled::Token::IsWildcard () const |
| 379 | { |
| 380 | static ConstString g_wildcard_str("*"); |
| 381 | return value == g_wildcard_str; |
| 382 | } |
| 383 | |
| 384 | |
| 385 | //---------------------------------------------------------------------- |
| 386 | // Dump "obj" to the supplied stream "s" |
| 387 | //---------------------------------------------------------------------- |
| 388 | Stream& |
| 389 | lldb_private::operator << (Stream& s, const Mangled::Token& obj) |
| 390 | { |
| 391 | obj.Dump(&s); |
| 392 | return s; |
| 393 | } |
| 394 | |
| 395 | |
| 396 | #pragma mark Mangled::TokenList |
| 397 | //---------------------------------------------------------------------- |
| 398 | // Mangled::TokenList |
| 399 | //---------------------------------------------------------------------- |
| 400 | |
| 401 | //-------------------------------------------------------------- |
| 402 | // Default constructor. If demangled is non-NULL and not-empty |
| 403 | // the token list will parse up the demangled string it is |
| 404 | // given, else the object will initialize an empty token list. |
| 405 | //-------------------------------------------------------------- |
| 406 | Mangled::TokenList::TokenList (const char *demangled) : |
| 407 | m_tokens() |
| 408 | { |
| 409 | if (demangled && demangled[0]) |
| 410 | { |
| 411 | Parse(demangled); |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | //---------------------------------------------------------------------- |
| 416 | // Destructor |
| 417 | //---------------------------------------------------------------------- |
| 418 | Mangled::TokenList::~TokenList () |
| 419 | { |
| 420 | } |
| 421 | |
| 422 | //---------------------------------------------------------------------- |
| 423 | // Parses "demangled" into tokens. This allows complex |
| 424 | // comparisons to be done. Comparisons can include wildcards at |
| 425 | // the namespace, method name, template, and template and |
| 426 | // parameter type levels. |
| 427 | // |
| 428 | // Example queries include: |
| 429 | // "std::basic_string<*>" // Find all std::basic_string variants |
| 430 | // "std::basic_string<*>::erase(*)" // Find all std::basic_string::erase variants with any number of parameters |
| 431 | // "*::clear()" // Find all functions with a method name of |
| 432 | // // "clear" that are in any namespace that |
| 433 | // // have no parameters |
| 434 | // "::printf" // Find the printf function in the global namespace |
| 435 | // "printf" // Ditto |
| 436 | // "foo::*(int)" // Find all functions in the class or namespace "foo" that take a single integer argument |
| 437 | // |
| 438 | // Returns the number of tokens that were decoded, or zero when |
| 439 | // we fail. |
| 440 | //---------------------------------------------------------------------- |
| 441 | size_t |
| 442 | Mangled::TokenList::Parse (const char *s) |
| 443 | { |
| 444 | m_tokens.clear(); |
| 445 | |
| 446 | Token token; |
| 447 | token.type = eNameSpace; |
| 448 | |
| 449 | TokenType max_type = eInvalid; |
| 450 | const char *p = s; |
| 451 | size_t span = 0; |
| 452 | size_t sep_size = 0; |
| 453 | |
| 454 | while (*p != '\0') |
| 455 | { |
| 456 | p = p + span + sep_size; |
| 457 | while (isspace(*p)) |
| 458 | ++p; |
| 459 | |
| 460 | if (*p == '\0') |
| 461 | break; |
| 462 | |
| 463 | span = strcspn(p, ":<>(),"); |
| 464 | sep_size = 1; |
| 465 | token.type = eInvalid; |
| 466 | switch (p[span]) |
| 467 | { |
| 468 | case '\0': |
| 469 | break; |
| 470 | |
| 471 | case ':': |
| 472 | if (p[span+1] == ':') |
| 473 | { |
| 474 | sep_size = 2; |
| 475 | if (span > 0) |
| 476 | { |
| 477 | token.type = eNameSpace; |
| 478 | token.value.SetCStringWithLength (p, span); |
| 479 | m_tokens.push_back(token); |
| 480 | } |
| 481 | else |
| 482 | continue; |
| 483 | } |
| 484 | break; |
| 485 | |
| 486 | case '(': |
| 487 | if (span > 0) |
| 488 | { |
| 489 | token.type = eMethodName; |
| 490 | token.value.SetCStringWithLength (p, span); |
| 491 | m_tokens.push_back(token); |
| 492 | } |
| 493 | |
| 494 | token.type = eParamsBeg; |
| 495 | token.value.Clear(); |
| 496 | m_tokens.push_back(token); |
| 497 | break; |
| 498 | |
| 499 | case ',': |
| 500 | if (span > 0) |
| 501 | { |
| 502 | token.type = eType; |
| 503 | token.value.SetCStringWithLength (p, span); |
| 504 | m_tokens.push_back(token); |
| 505 | } |
| 506 | else |
| 507 | { |
| 508 | continue; |
| 509 | } |
| 510 | break; |
| 511 | |
| 512 | case ')': |
| 513 | if (span > 0) |
| 514 | { |
| 515 | token.type = eType; |
| 516 | token.value.SetCStringWithLength (p, span); |
| 517 | m_tokens.push_back(token); |
| 518 | } |
| 519 | |
| 520 | token.type = eParamsEnd; |
| 521 | token.value.Clear(); |
| 522 | m_tokens.push_back(token); |
| 523 | break; |
| 524 | |
| 525 | case '<': |
| 526 | if (span > 0) |
| 527 | { |
| 528 | token.type = eTemplate; |
| 529 | token.value.SetCStringWithLength (p, span); |
| 530 | m_tokens.push_back(token); |
| 531 | } |
| 532 | |
| 533 | token.type = eTemplateBeg; |
| 534 | token.value.Clear(); |
| 535 | m_tokens.push_back(token); |
| 536 | break; |
| 537 | |
| 538 | case '>': |
| 539 | if (span > 0) |
| 540 | { |
| 541 | token.type = eType; |
| 542 | token.value.SetCStringWithLength (p, span); |
| 543 | m_tokens.push_back(token); |
| 544 | } |
| 545 | |
| 546 | token.type = eTemplateEnd; |
| 547 | token.value.Clear(); |
| 548 | m_tokens.push_back(token); |
| 549 | break; |
| 550 | } |
| 551 | |
| 552 | if (max_type < token.type) |
| 553 | max_type = token.type; |
| 554 | |
| 555 | if (token.type == eInvalid) |
| 556 | { |
| 557 | if (max_type >= eParamsEnd) |
| 558 | { |
| 559 | token.type = eQualifier; |
| 560 | token.value.SetCString(p); |
| 561 | m_tokens.push_back(token); |
| 562 | } |
| 563 | else if (max_type >= eParamsBeg) |
| 564 | { |
| 565 | token.type = eType; |
| 566 | token.value.SetCString(p); |
| 567 | m_tokens.push_back(token); |
| 568 | } |
| 569 | else |
| 570 | { |
| 571 | token.type = eMethodName; |
| 572 | token.value.SetCString(p); |
| 573 | m_tokens.push_back(token); |
| 574 | } |
| 575 | break; |
| 576 | } |
| 577 | } |
| 578 | return m_tokens.size(); |
| 579 | } |
| 580 | |
| 581 | |
| 582 | //---------------------------------------------------------------------- |
| 583 | // Clear the token list. |
| 584 | //---------------------------------------------------------------------- |
| 585 | void |
| 586 | Mangled::TokenList::Clear () |
| 587 | { |
| 588 | m_tokens.clear(); |
| 589 | } |
| 590 | |
| 591 | //---------------------------------------------------------------------- |
| 592 | // Dump the token list to the stream "s" |
| 593 | //---------------------------------------------------------------------- |
| 594 | void |
| 595 | Mangled::TokenList::Dump (Stream *s) const |
| 596 | { |
| 597 | collection::const_iterator pos; |
| 598 | collection::const_iterator beg = m_tokens.begin(); |
| 599 | collection::const_iterator end = m_tokens.end(); |
| 600 | for (pos = beg; pos != end; ++pos) |
| 601 | { |
| 602 | s->Indent("token["); |
| 603 | *s << (uint32_t)std::distance(beg, pos) << "] = " << *pos << "\n"; |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | //---------------------------------------------------------------------- |
| 608 | // Find the first token in the list that has "token_type" as its |
| 609 | // type |
| 610 | //---------------------------------------------------------------------- |
| 611 | const Mangled::Token * |
| 612 | Mangled::TokenList::Find (TokenType token_type) const |
| 613 | { |
| 614 | collection::const_iterator pos; |
| 615 | collection::const_iterator beg = m_tokens.begin(); |
| 616 | collection::const_iterator end = m_tokens.end(); |
| 617 | for (pos = beg; pos != end; ++pos) |
| 618 | { |
| 619 | if (pos->type == token_type) |
| 620 | return &(*pos); |
| 621 | } |
| 622 | return NULL; |
| 623 | } |
| 624 | |
| 625 | //---------------------------------------------------------------------- |
| 626 | // Return the token at index "idx", or NULL if the index is |
| 627 | // out of range. |
| 628 | //---------------------------------------------------------------------- |
| 629 | const Mangled::Token * |
| 630 | Mangled::TokenList::GetTokenAtIndex (uint32_t idx) const |
| 631 | { |
| 632 | if (idx < m_tokens.size()) |
| 633 | return &m_tokens[idx]; |
| 634 | return NULL; |
| 635 | } |
| 636 | |
| 637 | |
| 638 | //---------------------------------------------------------------------- |
| 639 | // Given a token list, see if it matches this object's tokens. |
| 640 | // "token_list" can contain wild card values to enable powerful |
| 641 | // matching. Matching the std::string::erase(*) example that was |
| 642 | // tokenized above we could use a token list such as: |
| 643 | // |
| 644 | // token name |
| 645 | // ----------- ---------------------------------------- |
| 646 | // eNameSpace "std" |
| 647 | // eTemplate "basic_string" |
| 648 | // eTemplateBeg |
| 649 | // eInvalid "*" |
| 650 | // eTemplateEnd |
| 651 | // eMethodName "erase" |
| 652 | // eParamsBeg |
| 653 | // eInvalid "*" |
| 654 | // eParamsEnd |
| 655 | // |
| 656 | // Returns true if it "token_list" matches this object's tokens, |
| 657 | // false otherwise. |
| 658 | //---------------------------------------------------------------------- |
| 659 | bool |
| 660 | Mangled::TokenList::MatchesQuery (const Mangled::TokenList &match) const |
| 661 | { |
| 662 | size_t match_count = 0; |
| 663 | collection::const_iterator pos; |
| 664 | collection::const_iterator pos_end = m_tokens.end(); |
| 665 | |
| 666 | collection::const_iterator match_pos; |
| 667 | collection::const_iterator match_pos_end = match.m_tokens.end(); |
| 668 | collection::const_iterator match_wildcard_pos = match_pos_end; |
| 669 | collection::const_iterator match_next_pos = match_pos_end; |
| 670 | |
| 671 | size_t template_scope_depth = 0; |
| 672 | |
| 673 | for (pos = m_tokens.begin(), match_pos = match.m_tokens.begin(); |
| 674 | pos != pos_end && match_pos != match_pos_end; |
| 675 | ++match_pos) |
| 676 | { |
| 677 | match_next_pos = match_pos + 1; |
| 678 | // Is this a wildcard? |
| 679 | if (match_pos->IsWildcard()) |
| 680 | { |
| 681 | if (match_wildcard_pos != match_pos_end) |
| 682 | return false; // Can't have two wildcards in effect at once. |
| 683 | |
| 684 | match_wildcard_pos = match_pos; |
| 685 | // Are we at the end of the MATCH token list? |
| 686 | if (match_next_pos == match_pos_end) |
| 687 | { |
| 688 | // There is nothing more to match, return if we have any matches so far... |
| 689 | return match_count > 0; |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | if (match_pos->type == eInvalid || match_pos->type == eError) |
| 694 | { |
| 695 | return false; |
| 696 | } |
| 697 | else |
| 698 | { |
| 699 | if (match_pos->type == eTemplateBeg) |
| 700 | { |
| 701 | ++template_scope_depth; |
| 702 | } |
| 703 | else if (match_pos->type == eTemplateEnd) |
| 704 | { |
| 705 | assert(template_scope_depth > 0); |
| 706 | --template_scope_depth; |
| 707 | } |
| 708 | |
| 709 | // Do we have a wildcard going right now? |
| 710 | if (match_wildcard_pos == match_pos_end) |
| 711 | { |
| 712 | // No wildcard matching right now, just check and see if things match |
| 713 | if (*pos == *match_pos) |
| 714 | ++match_count; |
| 715 | else |
| 716 | return false; |
| 717 | } |
| 718 | else |
| 719 | { |
| 720 | // We have a wildcard match going |
| 721 | |
| 722 | // For template types we need to make sure to match the template depths... |
| 723 | const size_t start_wildcard_template_scope_depth = template_scope_depth; |
| 724 | size_t curr_wildcard_template_scope_depth = template_scope_depth; |
| 725 | while (pos != pos_end) |
| 726 | { |
| 727 | if (match_wildcard_pos->type == eNameSpace && pos->type == eParamsBeg) |
| 728 | return false; |
| 729 | |
| 730 | if (start_wildcard_template_scope_depth == curr_wildcard_template_scope_depth) |
| 731 | { |
| 732 | if (*pos == *match_next_pos) |
| 733 | { |
| 734 | ++match_count; |
| 735 | match_pos = match_next_pos; |
| 736 | match_wildcard_pos = match_pos_end; |
| 737 | break; |
| 738 | } |
| 739 | } |
| 740 | if (pos->type == eTemplateBeg) |
| 741 | ++curr_wildcard_template_scope_depth; |
| 742 | else if (pos->type == eTemplateEnd) |
| 743 | --curr_wildcard_template_scope_depth; |
| 744 | |
| 745 | |
| 746 | ++pos; |
| 747 | } |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | if (pos != pos_end) |
| 752 | ++pos; |
| 753 | } |
| 754 | if (match_pos != match_pos_end) |
| 755 | return false; |
| 756 | |
| 757 | return match_count > 0; |
| 758 | } |
| 759 | |
| 760 | |
| 761 | //---------------------------------------------------------------------- |
| 762 | // Return the number of tokens in the token collection |
| 763 | //---------------------------------------------------------------------- |
| 764 | size_t |
| 765 | Mangled::TokenList::Size () const |
| 766 | { |
| 767 | return m_tokens.size(); |
| 768 | } |
| 769 | |
| 770 | |
| 771 | //---------------------------------------------------------------------- |
| 772 | // Stream out the tokens |
| 773 | //---------------------------------------------------------------------- |
| 774 | Stream& |
| 775 | lldb_private::operator << (Stream& s, const Mangled::TokenList& obj) |
| 776 | { |
| 777 | obj.Dump(&s); |
| 778 | return s; |
| 779 | } |