include/demangle.h

   1 /* Defs for interface to demanglers.
   2    Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002,
   3    2003, 2004, 2005, 2007 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License
   7    as published by the Free Software Foundation; either version 2, or
   8    (at your option) any later version.
   9
  10    In addition to the permissions in the GNU Library General Public
  11    License, the Free Software Foundation gives you unlimited
  12    permission to link the compiled version of this file into
  13    combinations with other programs, and to distribute those
  14    combinations without any restriction coming from the use of this
  15    file.  (The Library Public License restrictions do apply in other
  16    respects; for example, they cover modification of the file, and
  17    distribution when not linked into a combined executable.)
  18
  19    This program is distributed in the hope that it will be useful, but
  20    WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22    Library General Public License for more details.
  23
  24    You should have received a copy of the GNU Library General Public
  25    License along with this program; if not, write to the Free Software
  26    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  27    02110-1301, USA.  */
  28
  29
  30 #if !defined (DEMANGLE_H)
  31 #define DEMANGLE_H
  32
  33 #include "libiberty.h"
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif /* __cplusplus */
  38
  39 /* Options passed to cplus_demangle (in 2nd parameter). */
  40
  41 #define DMGL_NO_OPTS     0              /* For readability... */
  42 #define DMGL_PARAMS      (1 << 0)       /* Include function args */
  43 #define DMGL_ANSI        (1 << 1)       /* Include const, volatile, etc */
  44 #define DMGL_JAVA        (1 << 2)       /* Demangle as Java rather than C++. */
  45 #define DMGL_VERBOSE     (1 << 3)       /* Include implementation details.  */
  46 #define DMGL_TYPES       (1 << 4)       /* Also try to demangle type encodings.  */
  47 #define DMGL_RET_POSTFIX (1 << 5)       /* Print function return types (when
  48                                            present) after function signature */
  49
  50 #define DMGL_AUTO        (1 << 8)
  51 #define DMGL_GNU         (1 << 9)
  52 #define DMGL_LUCID       (1 << 10)
  53 #define DMGL_ARM         (1 << 11)
  54 #define DMGL_HP          (1 << 12)       /* For the HP aCC compiler;
  55                                             same as ARM except for
  56                                             template arguments, etc. */
  57 #define DMGL_EDG         (1 << 13)
  58 #define DMGL_GNU_V3      (1 << 14)
  59 #define DMGL_GNAT        (1 << 15)
  60
  61 /* If none of these are set, use 'current_demangling_style' as the default. */
  62 #define DMGL_STYLE_MASK (DMGL_AUTO|DMGL_GNU|DMGL_LUCID|DMGL_ARM|DMGL_HP|DMGL_EDG|DMGL_GNU_V3|DMGL_JAVA|DMGL_GNAT)
  63
  64 /* Enumeration of possible demangling styles.
  65
  66    Lucid and ARM styles are still kept logically distinct, even though
  67    they now both behave identically.  The resulting style is actual the
  68    union of both.  I.E. either style recognizes both "__pt__" and "__rf__"
  69    for operator "->", even though the first is lucid style and the second
  70    is ARM style. (FIXME?) */
  71
  72 extern enum demangling_styles
  73 {
  74   no_demangling = -1,
  75   unknown_demangling = 0,
  76   auto_demangling = DMGL_AUTO,
  77   gnu_demangling = DMGL_GNU,
  78   lucid_demangling = DMGL_LUCID,
  79   arm_demangling = DMGL_ARM,
  80   hp_demangling = DMGL_HP,
  81   edg_demangling = DMGL_EDG,
  82   gnu_v3_demangling = DMGL_GNU_V3,
  83   java_demangling = DMGL_JAVA,
  84   gnat_demangling = DMGL_GNAT
  85 } current_demangling_style;
  86
  87 /* Define string names for the various demangling styles. */
  88
  89 #define NO_DEMANGLING_STYLE_STRING            "none"
  90 #define AUTO_DEMANGLING_STYLE_STRING          "auto"
  91 #define GNU_DEMANGLING_STYLE_STRING           "gnu"
  92 #define LUCID_DEMANGLING_STYLE_STRING         "lucid"
  93 #define ARM_DEMANGLING_STYLE_STRING           "arm"
  94 #define HP_DEMANGLING_STYLE_STRING            "hp"
  95 #define EDG_DEMANGLING_STYLE_STRING           "edg"
  96 #define GNU_V3_DEMANGLING_STYLE_STRING        "gnu-v3"
  97 #define JAVA_DEMANGLING_STYLE_STRING          "java"
  98 #define GNAT_DEMANGLING_STYLE_STRING          "gnat"
  99
 100 /* Some macros to test what demangling style is active. */
 101
 102 #define CURRENT_DEMANGLING_STYLE current_demangling_style
 103 #define AUTO_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_AUTO)
 104 #define GNU_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNU)
 105 #define LUCID_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_LUCID)
 106 #define ARM_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_ARM)
 107 #define HP_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_HP)
 108 #define EDG_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_EDG)
 109 #define GNU_V3_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNU_V3)
 110 #define JAVA_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_JAVA)
 111 #define GNAT_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNAT)
 112
 113 /* Provide information about the available demangle styles. This code is
 114    pulled from gdb into libiberty because it is useful to binutils also.  */
 115
 116 extern const struct demangler_engine
 117 {
 118   const char *const demangling_style_name;
 119   const enum demangling_styles demangling_style;
 120   const char *const demangling_style_doc;
 121 } libiberty_demanglers[];
 122
 123 extern char *
 124 cplus_demangle (const char *mangled, int options);
 125
 126 extern int
 127 cplus_demangle_opname (const char *opname, char *result, int options);
 128
 129 extern const char *
 130 cplus_mangle_opname (const char *opname, int options);
 131
 132 /* Note: This sets global state.  FIXME if you care about multi-threading. */
 133
 134 extern void
 135 set_cplus_marker_for_demangling (int ch);
 136
 137 extern enum demangling_styles
 138 cplus_demangle_set_style (enum demangling_styles style);
 139
 140 extern enum demangling_styles
 141 cplus_demangle_name_to_style (const char *name);
 142
 143 /* Callback typedef for allocation-less demangler interfaces. */
 144 typedef void (*demangle_callbackref) (const char *, size_t, void *);
 145
 146 /* V3 ABI demangling entry points, defined in cp-demangle.c.  Callback
 147    variants return non-zero on success, zero on error.  char* variants
 148    return a string allocated by malloc on success, NULL on error.  */
 149 extern int
 150 cplus_demangle_v3_callback (const char *mangled, int options,
 151                             demangle_callbackref callback, void *opaque);
 152
 153 extern char*
 154 cplus_demangle_v3 (const char *mangled, int options);
 155
 156 extern int
 157 java_demangle_v3_callback (const char *mangled,
 158                            demangle_callbackref callback, void *opaque);
 159
 160 extern char*
 161 java_demangle_v3 (const char *mangled);
 162
 163 enum gnu_v3_ctor_kinds {
 164   gnu_v3_complete_object_ctor = 1,
 165   gnu_v3_base_object_ctor,
 166   gnu_v3_complete_object_allocating_ctor
 167 };
 168
 169 /* Return non-zero iff NAME is the mangled form of a constructor name
 170    in the G++ V3 ABI demangling style.  Specifically, return an `enum
 171    gnu_v3_ctor_kinds' value indicating what kind of constructor
 172    it is.  */
 173 extern enum gnu_v3_ctor_kinds
 174         is_gnu_v3_mangled_ctor (const char *name);
 175
 176
 177 enum gnu_v3_dtor_kinds {
 178   gnu_v3_deleting_dtor = 1,
 179   gnu_v3_complete_object_dtor,
 180   gnu_v3_base_object_dtor
 181 };
 182
 183 /* Return non-zero iff NAME is the mangled form of a destructor name
 184    in the G++ V3 ABI demangling style.  Specifically, return an `enum
 185    gnu_v3_dtor_kinds' value, indicating what kind of destructor
 186    it is.  */
 187 extern enum gnu_v3_dtor_kinds
 188         is_gnu_v3_mangled_dtor (const char *name);
 189
 190 /* The V3 demangler works in two passes.  The first pass builds a tree
 191    representation of the mangled name, and the second pass turns the
 192    tree representation into a demangled string.  Here we define an
 193    interface to permit a caller to build their own tree
 194    representation, which they can pass to the demangler to get a
 195    demangled string.  This can be used to canonicalize user input into
 196    something which the demangler might output.  It could also be used
 197    by other demanglers in the future.  */
 198
 199 /* These are the component types which may be found in the tree.  Many
 200    component types have one or two subtrees, referred to as left and
 201    right (a component type with only one subtree puts it in the left
 202    subtree).  */
 203
 204 enum demangle_component_type
 205 {
 206   /* A name, with a length and a pointer to a string.  */
 207   DEMANGLE_COMPONENT_NAME,
 208   /* A qualified name.  The left subtree is a class or namespace or
 209      some such thing, and the right subtree is a name qualified by
 210      that class.  */
 211   DEMANGLE_COMPONENT_QUAL_NAME,
 212   /* A local name.  The left subtree describes a function, and the
 213      right subtree is a name which is local to that function.  */
 214   DEMANGLE_COMPONENT_LOCAL_NAME,
 215   /* A typed name.  The left subtree is a name, and the right subtree
 216      describes that name as a function.  */
 217   DEMANGLE_COMPONENT_TYPED_NAME,
 218   /* A template.  The left subtree is a template name, and the right
 219      subtree is a template argument list.  */
 220   DEMANGLE_COMPONENT_TEMPLATE,
 221   /* A template parameter.  This holds a number, which is the template
 222      parameter index.  */
 223   DEMANGLE_COMPONENT_TEMPLATE_PARAM,
 224   /* A function parameter.  This holds a number, which is the index.  */
 225   DEMANGLE_COMPONENT_FUNCTION_PARAM,
 226   /* A constructor.  This holds a name and the kind of
 227      constructor.  */
 228   DEMANGLE_COMPONENT_CTOR,
 229   /* A destructor.  This holds a name and the kind of destructor.  */
 230   DEMANGLE_COMPONENT_DTOR,
 231   /* A vtable.  This has one subtree, the type for which this is a
 232      vtable.  */
 233   DEMANGLE_COMPONENT_VTABLE,
 234   /* A VTT structure.  This has one subtree, the type for which this
 235      is a VTT.  */
 236   DEMANGLE_COMPONENT_VTT,
 237   /* A construction vtable.  The left subtree is the type for which
 238      this is a vtable, and the right subtree is the derived type for
 239      which this vtable is built.  */
 240   DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE,
 241   /* A typeinfo structure.  This has one subtree, the type for which
 242      this is the tpeinfo structure.  */
 243   DEMANGLE_COMPONENT_TYPEINFO,
 244   /* A typeinfo name.  This has one subtree, the type for which this
 245      is the typeinfo name.  */
 246   DEMANGLE_COMPONENT_TYPEINFO_NAME,
 247   /* A typeinfo function.  This has one subtree, the type for which
 248      this is the tpyeinfo function.  */
 249   DEMANGLE_COMPONENT_TYPEINFO_FN,
 250   /* A thunk.  This has one subtree, the name for which this is a
 251      thunk.  */
 252   DEMANGLE_COMPONENT_THUNK,
 253   /* A virtual thunk.  This has one subtree, the name for which this
 254      is a virtual thunk.  */
 255   DEMANGLE_COMPONENT_VIRTUAL_THUNK,
 256   /* A covariant thunk.  This has one subtree, the name for which this
 257      is a covariant thunk.  */
 258   DEMANGLE_COMPONENT_COVARIANT_THUNK,
 259   /* A Java class.  This has one subtree, the type.  */
 260   DEMANGLE_COMPONENT_JAVA_CLASS,
 261   /* A guard variable.  This has one subtree, the name for which this
 262      is a guard variable.  */
 263   DEMANGLE_COMPONENT_GUARD,
 264   /* A reference temporary.  This has one subtree, the name for which
 265      this is a temporary.  */
 266   DEMANGLE_COMPONENT_REFTEMP,
 267   /* A hidden alias.  This has one subtree, the encoding for which it
 268      is providing alternative linkage.  */
 269   DEMANGLE_COMPONENT_HIDDEN_ALIAS,
 270   /* A standard substitution.  This holds the name of the
 271      substitution.  */
 272   DEMANGLE_COMPONENT_SUB_STD,
 273   /* The restrict qualifier.  The one subtree is the type which is
 274      being qualified.  */
 275   DEMANGLE_COMPONENT_RESTRICT,
 276   /* The volatile qualifier.  The one subtree is the type which is
 277      being qualified.  */
 278   DEMANGLE_COMPONENT_VOLATILE,
 279   /* The const qualifier.  The one subtree is the type which is being
 280      qualified.  */
 281   DEMANGLE_COMPONENT_CONST,
 282   /* The restrict qualifier modifying a member function.  The one
 283      subtree is the type which is being qualified.  */
 284   DEMANGLE_COMPONENT_RESTRICT_THIS,
 285   /* The volatile qualifier modifying a member function.  The one
 286      subtree is the type which is being qualified.  */
 287   DEMANGLE_COMPONENT_VOLATILE_THIS,
 288   /* The const qualifier modifying a member function.  The one subtree
 289      is the type which is being qualified.  */
 290   DEMANGLE_COMPONENT_CONST_THIS,
 291   /* A vendor qualifier.  The left subtree is the type which is being
 292      qualified, and the right subtree is the name of the
 293      qualifier.  */
 294   DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL,
 295   /* A pointer.  The one subtree is the type which is being pointed
 296      to.  */
 297   DEMANGLE_COMPONENT_POINTER,
 298   /* A reference.  The one subtree is the type which is being
 299      referenced.  */
 300   DEMANGLE_COMPONENT_REFERENCE,
 301   /* C++0x: An rvalue reference.  The one subtree is the type which is
 302      being referenced.  */
 303   DEMANGLE_COMPONENT_RVALUE_REFERENCE,
 304   /* A complex type.  The one subtree is the base type.  */
 305   DEMANGLE_COMPONENT_COMPLEX,
 306   /* An imaginary type.  The one subtree is the base type.  */
 307   DEMANGLE_COMPONENT_IMAGINARY,
 308   /* A builtin type.  This holds the builtin type information.  */
 309   DEMANGLE_COMPONENT_BUILTIN_TYPE,
 310   /* A vendor's builtin type.  This holds the name of the type.  */
 311   DEMANGLE_COMPONENT_VENDOR_TYPE,
 312   /* A function type.  The left subtree is the return type.  The right
 313      subtree is a list of ARGLIST nodes.  Either or both may be
 314      NULL.  */
 315   DEMANGLE_COMPONENT_FUNCTION_TYPE,
 316   /* An array type.  The left subtree is the dimension, which may be
 317      NULL, or a string (represented as DEMANGLE_COMPONENT_NAME), or an
 318      expression.  The right subtree is the element type.  */
 319   DEMANGLE_COMPONENT_ARRAY_TYPE,
 320   /* A pointer to member type.  The left subtree is the class type,
 321      and the right subtree is the member type.  CV-qualifiers appear
 322      on the latter.  */
 323   DEMANGLE_COMPONENT_PTRMEM_TYPE,
 324   /* A fixed-point type.  */
 325   DEMANGLE_COMPONENT_FIXED_TYPE,
 326   /* An argument list.  The left subtree is the current argument, and
 327      the right subtree is either NULL or another ARGLIST node.  */
 328   DEMANGLE_COMPONENT_ARGLIST,
 329   /* A template argument list.  The left subtree is the current
 330      template argument, and the right subtree is either NULL or
 331      another TEMPLATE_ARGLIST node.  */
 332   DEMANGLE_COMPONENT_TEMPLATE_ARGLIST,
 333   /* An operator.  This holds information about a standard
 334      operator.  */
 335   DEMANGLE_COMPONENT_OPERATOR,
 336   /* An extended operator.  This holds the number of arguments, and
 337      the name of the extended operator.  */
 338   DEMANGLE_COMPONENT_EXTENDED_OPERATOR,
 339   /* A typecast, represented as a unary operator.  The one subtree is
 340      the type to which the argument should be cast.  */
 341   DEMANGLE_COMPONENT_CAST,
 342   /* A unary expression.  The left subtree is the operator, and the
 343      right subtree is the single argument.  */
 344   DEMANGLE_COMPONENT_UNARY,
 345   /* A binary expression.  The left subtree is the operator, and the
 346      right subtree is a BINARY_ARGS.  */
 347   DEMANGLE_COMPONENT_BINARY,
 348   /* Arguments to a binary expression.  The left subtree is the first
 349      argument, and the right subtree is the second argument.  */
 350   DEMANGLE_COMPONENT_BINARY_ARGS,
 351   /* A trinary expression.  The left subtree is the operator, and the
 352      right subtree is a TRINARY_ARG1.  */
 353   DEMANGLE_COMPONENT_TRINARY,
 354   /* Arguments to a trinary expression.  The left subtree is the first
 355      argument, and the right subtree is a TRINARY_ARG2.  */
 356   DEMANGLE_COMPONENT_TRINARY_ARG1,
 357   /* More arguments to a trinary expression.  The left subtree is the
 358      second argument, and the right subtree is the third argument.  */
 359   DEMANGLE_COMPONENT_TRINARY_ARG2,
 360   /* A literal.  The left subtree is the type, and the right subtree
 361      is the value, represented as a DEMANGLE_COMPONENT_NAME.  */
 362   DEMANGLE_COMPONENT_LITERAL,
 363   /* A negative literal.  Like LITERAL, but the value is negated.
 364      This is a minor hack: the NAME used for LITERAL points directly
 365      to the mangled string, but since negative numbers are mangled
 366      using 'n' instead of '-', we want a way to indicate a negative
 367      number which involves neither modifying the mangled string nor
 368      allocating a new copy of the literal in memory.  */
 369   DEMANGLE_COMPONENT_LITERAL_NEG,
 370   /* A libgcj compiled resource.  The left subtree is the name of the
 371      resource.  */
 372   DEMANGLE_COMPONENT_JAVA_RESOURCE,
 373   /* A name formed by the concatenation of two parts.  The left
 374      subtree is the first part and the right subtree the second.  */
 375   DEMANGLE_COMPONENT_COMPOUND_NAME,
 376   /* A name formed by a single character.  */
 377   DEMANGLE_COMPONENT_CHARACTER,
 378   /* A decltype type.  */
 379   DEMANGLE_COMPONENT_DECLTYPE,
 380   /* A pack expansion.  */
 381   DEMANGLE_COMPONENT_PACK_EXPANSION
 382 };
 383
 384 /* Types which are only used internally.  */
 385
 386 struct demangle_operator_info;
 387 struct demangle_builtin_type_info;
 388
 389 /* A node in the tree representation is an instance of a struct
 390    demangle_component.  Note that the field names of the struct are
 391    not well protected against macros defined by the file including
 392    this one.  We can fix this if it ever becomes a problem.  */
 393
 394 struct demangle_component
 395 {
 396   /* The type of this component.  */
 397   enum demangle_component_type type;
 398
 399   union
 400   {
 401     /* For DEMANGLE_COMPONENT_NAME.  */
 402     struct
 403     {
 404       /* A pointer to the name (which need not NULL terminated) and
 405          its length.  */
 406       const char *s;
 407       int len;
 408     } s_name;
 409
 410     /* For DEMANGLE_COMPONENT_OPERATOR.  */
 411     struct
 412     {
 413       /* Operator.  */
 414       const struct demangle_operator_info *op;
 415     } s_operator;
 416
 417     /* For DEMANGLE_COMPONENT_EXTENDED_OPERATOR.  */
 418     struct
 419     {
 420       /* Number of arguments.  */
 421       int args;
 422       /* Name.  */
 423       struct demangle_component *name;
 424     } s_extended_operator;
 425
 426     /* For DEMANGLE_COMPONENT_FIXED_TYPE.  */
 427     struct
 428     {
 429       /* The length, indicated by a C integer type name.  */
 430       struct demangle_component *length;
 431       /* _Accum or _Fract?  */
 432       short accum;
 433       /* Saturating or not?  */
 434       short sat;
 435     } s_fixed;
 436
 437     /* For DEMANGLE_COMPONENT_CTOR.  */
 438     struct
 439     {
 440       /* Kind of constructor.  */
 441       enum gnu_v3_ctor_kinds kind;
 442       /* Name.  */
 443       struct demangle_component *name;
 444     } s_ctor;
 445
 446     /* For DEMANGLE_COMPONENT_DTOR.  */
 447     struct
 448     {
 449       /* Kind of destructor.  */
 450       enum gnu_v3_dtor_kinds kind;
 451       /* Name.  */
 452       struct demangle_component *name;
 453     } s_dtor;
 454
 455     /* For DEMANGLE_COMPONENT_BUILTIN_TYPE.  */
 456     struct
 457     {
 458       /* Builtin type.  */
 459       const struct demangle_builtin_type_info *type;
 460     } s_builtin;
 461
 462     /* For DEMANGLE_COMPONENT_SUB_STD.  */
 463     struct
 464     {
 465       /* Standard substitution string.  */
 466       const char* string;
 467       /* Length of string.  */
 468       int len;
 469     } s_string;
 470
 471     /* For DEMANGLE_COMPONENT_*_PARAM.  */
 472     struct
 473     {
 474       /* Parameter index.  */
 475       long number;
 476     } s_number;
 477
 478     /* For DEMANGLE_COMPONENT_CHARACTER.  */
 479     struct
 480     {
 481       int character;
 482     } s_character;
 483
 484     /* For other types.  */
 485     struct
 486     {
 487       /* Left (or only) subtree.  */
 488       struct demangle_component *left;
 489       /* Right subtree.  */
 490       struct demangle_component *right;
 491     } s_binary;
 492
 493   } u;
 494 };
 495
 496 /* People building mangled trees are expected to allocate instances of
 497    struct demangle_component themselves.  They can then call one of
 498    the following functions to fill them in.  */
 499
 500 /* Fill in most component types with a left subtree and a right
 501    subtree.  Returns non-zero on success, zero on failure, such as an
 502    unrecognized or inappropriate component type.  */
 503
 504 extern int
 505 cplus_demangle_fill_component (struct demangle_component *fill,
 506                                enum demangle_component_type,
 507                                struct demangle_component *left,
 508                                struct demangle_component *right);
 509
 510 /* Fill in a DEMANGLE_COMPONENT_NAME.  Returns non-zero on success,
 511    zero for bad arguments.  */
 512
 513 extern int
 514 cplus_demangle_fill_name (struct demangle_component *fill,
 515                           const char *, int);
 516
 517 /* Fill in a DEMANGLE_COMPONENT_BUILTIN_TYPE, using the name of the
 518    builtin type (e.g., "int", etc.).  Returns non-zero on success,
 519    zero if the type is not recognized.  */
 520
 521 extern int
 522 cplus_demangle_fill_builtin_type (struct demangle_component *fill,
 523                                   const char *type_name);
 524
 525 /* Fill in a DEMANGLE_COMPONENT_OPERATOR, using the name of the
 526    operator and the number of arguments which it takes (the latter is
 527    used to disambiguate operators which can be both binary and unary,
 528    such as '-').  Returns non-zero on success, zero if the operator is
 529    not recognized.  */
 530
 531 extern int
 532 cplus_demangle_fill_operator (struct demangle_component *fill,
 533                               const char *opname, int args);
 534
 535 /* Fill in a DEMANGLE_COMPONENT_EXTENDED_OPERATOR, providing the
 536    number of arguments and the name.  Returns non-zero on success,
 537    zero for bad arguments.  */
 538
 539 extern int
 540 cplus_demangle_fill_extended_operator (struct demangle_component *fill,
 541                                        int numargs,
 542                                        struct demangle_component *nm);
 543
 544 /* Fill in a DEMANGLE_COMPONENT_CTOR.  Returns non-zero on success,
 545    zero for bad arguments.  */
 546
 547 extern int
 548 cplus_demangle_fill_ctor (struct demangle_component *fill,
 549                           enum gnu_v3_ctor_kinds kind,
 550                           struct demangle_component *name);
 551
 552 /* Fill in a DEMANGLE_COMPONENT_DTOR.  Returns non-zero on success,
 553    zero for bad arguments.  */
 554
 555 extern int
 556 cplus_demangle_fill_dtor (struct demangle_component *fill,
 557                           enum gnu_v3_dtor_kinds kind,
 558                           struct demangle_component *name);
 559
 560 /* This function translates a mangled name into a struct
 561    demangle_component tree.  The first argument is the mangled name.
 562    The second argument is DMGL_* options.  This returns a pointer to a
 563    tree on success, or NULL on failure.  On success, the third
 564    argument is set to a block of memory allocated by malloc.  This
 565    block should be passed to free when the tree is no longer
 566    needed.  */
 567
 568 extern struct demangle_component *
 569 cplus_demangle_v3_components (const char *mangled, int options, void **mem);
 570
 571 /* This function takes a struct demangle_component tree and returns
 572    the corresponding demangled string.  The first argument is DMGL_*
 573    options.  The second is the tree to demangle.  The third is a guess
 574    at the length of the demangled string, used to initially allocate
 575    the return buffer.  The fourth is a pointer to a size_t.  On
 576    success, this function returns a buffer allocated by malloc(), and
 577    sets the size_t pointed to by the fourth argument to the size of
 578    the allocated buffer (not the length of the returned string).  On
 579    failure, this function returns NULL, and sets the size_t pointed to
 580    by the fourth argument to 0 for an invalid tree, or to 1 for a
 581    memory allocation error.  */
 582
 583 extern char *
 584 cplus_demangle_print (int options,
 585                       const struct demangle_component *tree,
 586                       int estimated_length,
 587                       size_t *p_allocated_size);
 588
 589 /* This function takes a struct demangle_component tree and passes back
 590    a demangled string in one or more calls to a callback function.
 591    The first argument is DMGL_* options.  The second is the tree to
 592    demangle.  The third is a pointer to a callback function; on each call
 593    this receives an element of the demangled string, its length, and an
 594    opaque value.  The fourth is the opaque value passed to the callback.
 595    The callback is called once or more to return the full demangled
 596    string.  The demangled element string is always nul-terminated, though
 597    its length is also provided for convenience.  In contrast to
 598    cplus_demangle_print(), this function does not allocate heap memory
 599    to grow output strings (except perhaps where alloca() is implemented
 600    by malloc()), and so is normally safe for use where the heap has been
 601    corrupted.  On success, this function returns 1; on failure, 0.  */
 602
 603 extern int
 604 cplus_demangle_print_callback (int options,
 605                                const struct demangle_component *tree,
 606                                demangle_callbackref callback, void *opaque);
 607
 608 #ifdef __cplusplus
 609 }
 610 #endif /* __cplusplus */
 611
 612 #endif  /* DEMANGLE_H */