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, 2008, 2009, 2010 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 char *
 164 ada_demangle (const char *mangled, int options);
 165
 166 enum gnu_v3_ctor_kinds {
 167   gnu_v3_complete_object_ctor = 1,
 168   gnu_v3_base_object_ctor,
 169   gnu_v3_complete_object_allocating_ctor
 170 };
 171
 172 /* Return non-zero iff NAME is the mangled form of a constructor name
 173    in the G++ V3 ABI demangling style.  Specifically, return an `enum
 174    gnu_v3_ctor_kinds' value indicating what kind of constructor
 175    it is.  */
 176 extern enum gnu_v3_ctor_kinds
 177         is_gnu_v3_mangled_ctor (const char *name);
 178
 179
 180 enum gnu_v3_dtor_kinds {
 181   gnu_v3_deleting_dtor = 1,
 182   gnu_v3_complete_object_dtor,
 183   gnu_v3_base_object_dtor
 184 };
 185
 186 /* Return non-zero iff NAME is the mangled form of a destructor name
 187    in the G++ V3 ABI demangling style.  Specifically, return an `enum
 188    gnu_v3_dtor_kinds' value, indicating what kind of destructor
 189    it is.  */
 190 extern enum gnu_v3_dtor_kinds
 191         is_gnu_v3_mangled_dtor (const char *name);
 192
 193 /* The V3 demangler works in two passes.  The first pass builds a tree
 194    representation of the mangled name, and the second pass turns the
 195    tree representation into a demangled string.  Here we define an
 196    interface to permit a caller to build their own tree
 197    representation, which they can pass to the demangler to get a
 198    demangled string.  This can be used to canonicalize user input into
 199    something which the demangler might output.  It could also be used
 200    by other demanglers in the future.  */
 201
 202 /* These are the component types which may be found in the tree.  Many
 203    component types have one or two subtrees, referred to as left and
 204    right (a component type with only one subtree puts it in the left
 205    subtree).  */
 206
 207 enum demangle_component_type
 208 {
 209   /* A name, with a length and a pointer to a string.  */
 210   DEMANGLE_COMPONENT_NAME,
 211   /* A qualified name.  The left subtree is a class or namespace or
 212      some such thing, and the right subtree is a name qualified by
 213      that class.  */
 214   DEMANGLE_COMPONENT_QUAL_NAME,
 215   /* A local name.  The left subtree describes a function, and the
 216      right subtree is a name which is local to that function.  */
 217   DEMANGLE_COMPONENT_LOCAL_NAME,
 218   /* A typed name.  The left subtree is a name, and the right subtree
 219      describes that name as a function.  */
 220   DEMANGLE_COMPONENT_TYPED_NAME,
 221   /* A template.  The left subtree is a template name, and the right
 222      subtree is a template argument list.  */
 223   DEMANGLE_COMPONENT_TEMPLATE,
 224   /* A template parameter.  This holds a number, which is the template
 225      parameter index.  */
 226   DEMANGLE_COMPONENT_TEMPLATE_PARAM,
 227   /* A function parameter.  This holds a number, which is the index.  */
 228   DEMANGLE_COMPONENT_FUNCTION_PARAM,
 229   /* A constructor.  This holds a name and the kind of
 230      constructor.  */
 231   DEMANGLE_COMPONENT_CTOR,
 232   /* A destructor.  This holds a name and the kind of destructor.  */
 233   DEMANGLE_COMPONENT_DTOR,
 234   /* A vtable.  This has one subtree, the type for which this is a
 235      vtable.  */
 236   DEMANGLE_COMPONENT_VTABLE,
 237   /* A VTT structure.  This has one subtree, the type for which this
 238      is a VTT.  */
 239   DEMANGLE_COMPONENT_VTT,
 240   /* A construction vtable.  The left subtree is the type for which
 241      this is a vtable, and the right subtree is the derived type for
 242      which this vtable is built.  */
 243   DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE,
 244   /* A typeinfo structure.  This has one subtree, the type for which
 245      this is the tpeinfo structure.  */
 246   DEMANGLE_COMPONENT_TYPEINFO,
 247   /* A typeinfo name.  This has one subtree, the type for which this
 248      is the typeinfo name.  */
 249   DEMANGLE_COMPONENT_TYPEINFO_NAME,
 250   /* A typeinfo function.  This has one subtree, the type for which
 251      this is the tpyeinfo function.  */
 252   DEMANGLE_COMPONENT_TYPEINFO_FN,
 253   /* A thunk.  This has one subtree, the name for which this is a
 254      thunk.  */
 255   DEMANGLE_COMPONENT_THUNK,
 256   /* A virtual thunk.  This has one subtree, the name for which this
 257      is a virtual thunk.  */
 258   DEMANGLE_COMPONENT_VIRTUAL_THUNK,
 259   /* A covariant thunk.  This has one subtree, the name for which this
 260      is a covariant thunk.  */
 261   DEMANGLE_COMPONENT_COVARIANT_THUNK,
 262   /* A Java class.  This has one subtree, the type.  */
 263   DEMANGLE_COMPONENT_JAVA_CLASS,
 264   /* A guard variable.  This has one subtree, the name for which this
 265      is a guard variable.  */
 266   DEMANGLE_COMPONENT_GUARD,
 267   /* A reference temporary.  This has one subtree, the name for which
 268      this is a temporary.  */
 269   DEMANGLE_COMPONENT_REFTEMP,
 270   /* A hidden alias.  This has one subtree, the encoding for which it
 271      is providing alternative linkage.  */
 272   DEMANGLE_COMPONENT_HIDDEN_ALIAS,
 273   /* A standard substitution.  This holds the name of the
 274      substitution.  */
 275   DEMANGLE_COMPONENT_SUB_STD,
 276   /* The restrict qualifier.  The one subtree is the type which is
 277      being qualified.  */
 278   DEMANGLE_COMPONENT_RESTRICT,
 279   /* The volatile qualifier.  The one subtree is the type which is
 280      being qualified.  */
 281   DEMANGLE_COMPONENT_VOLATILE,
 282   /* The const qualifier.  The one subtree is the type which is being
 283      qualified.  */
 284   DEMANGLE_COMPONENT_CONST,
 285   /* The restrict qualifier modifying a member function.  The one
 286      subtree is the type which is being qualified.  */
 287   DEMANGLE_COMPONENT_RESTRICT_THIS,
 288   /* The volatile qualifier modifying a member function.  The one
 289      subtree is the type which is being qualified.  */
 290   DEMANGLE_COMPONENT_VOLATILE_THIS,
 291   /* The const qualifier modifying a member function.  The one subtree
 292      is the type which is being qualified.  */
 293   DEMANGLE_COMPONENT_CONST_THIS,
 294   /* A vendor qualifier.  The left subtree is the type which is being
 295      qualified, and the right subtree is the name of the
 296      qualifier.  */
 297   DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL,
 298   /* A pointer.  The one subtree is the type which is being pointed
 299      to.  */
 300   DEMANGLE_COMPONENT_POINTER,
 301   /* A reference.  The one subtree is the type which is being
 302      referenced.  */
 303   DEMANGLE_COMPONENT_REFERENCE,
 304   /* C++0x: An rvalue reference.  The one subtree is the type which is
 305      being referenced.  */
 306   DEMANGLE_COMPONENT_RVALUE_REFERENCE,
 307   /* A complex type.  The one subtree is the base type.  */
 308   DEMANGLE_COMPONENT_COMPLEX,
 309   /* An imaginary type.  The one subtree is the base type.  */
 310   DEMANGLE_COMPONENT_IMAGINARY,
 311   /* A builtin type.  This holds the builtin type information.  */
 312   DEMANGLE_COMPONENT_BUILTIN_TYPE,
 313   /* A vendor's builtin type.  This holds the name of the type.  */
 314   DEMANGLE_COMPONENT_VENDOR_TYPE,
 315   /* A function type.  The left subtree is the return type.  The right
 316      subtree is a list of ARGLIST nodes.  Either or both may be
 317      NULL.  */
 318   DEMANGLE_COMPONENT_FUNCTION_TYPE,
 319   /* An array type.  The left subtree is the dimension, which may be
 320      NULL, or a string (represented as DEMANGLE_COMPONENT_NAME), or an
 321      expression.  The right subtree is the element type.  */
 322   DEMANGLE_COMPONENT_ARRAY_TYPE,
 323   /* A pointer to member type.  The left subtree is the class type,
 324      and the right subtree is the member type.  CV-qualifiers appear
 325      on the latter.  */
 326   DEMANGLE_COMPONENT_PTRMEM_TYPE,
 327   /* A fixed-point type.  */
 328   DEMANGLE_COMPONENT_FIXED_TYPE,
 329   /* A vector type.  The left subtree is the number of elements,
 330      the right subtree is the element type.  */
 331   DEMANGLE_COMPONENT_VECTOR_TYPE,
 332   /* An argument list.  The left subtree is the current argument, and
 333      the right subtree is either NULL or another ARGLIST node.  */
 334   DEMANGLE_COMPONENT_ARGLIST,
 335   /* A template argument list.  The left subtree is the current
 336      template argument, and the right subtree is either NULL or
 337      another TEMPLATE_ARGLIST node.  */
 338   DEMANGLE_COMPONENT_TEMPLATE_ARGLIST,
 339   /* An operator.  This holds information about a standard
 340      operator.  */
 341   DEMANGLE_COMPONENT_OPERATOR,
 342   /* An extended operator.  This holds the number of arguments, and
 343      the name of the extended operator.  */
 344   DEMANGLE_COMPONENT_EXTENDED_OPERATOR,
 345   /* A typecast, represented as a unary operator.  The one subtree is
 346      the type to which the argument should be cast.  */
 347   DEMANGLE_COMPONENT_CAST,
 348   /* A unary expression.  The left subtree is the operator, and the
 349      right subtree is the single argument.  */
 350   DEMANGLE_COMPONENT_UNARY,
 351   /* A binary expression.  The left subtree is the operator, and the
 352      right subtree is a BINARY_ARGS.  */
 353   DEMANGLE_COMPONENT_BINARY,
 354   /* Arguments to a binary expression.  The left subtree is the first
 355      argument, and the right subtree is the second argument.  */
 356   DEMANGLE_COMPONENT_BINARY_ARGS,
 357   /* A trinary expression.  The left subtree is the operator, and the
 358      right subtree is a TRINARY_ARG1.  */
 359   DEMANGLE_COMPONENT_TRINARY,
 360   /* Arguments to a trinary expression.  The left subtree is the first
 361      argument, and the right subtree is a TRINARY_ARG2.  */
 362   DEMANGLE_COMPONENT_TRINARY_ARG1,
 363   /* More arguments to a trinary expression.  The left subtree is the
 364      second argument, and the right subtree is the third argument.  */
 365   DEMANGLE_COMPONENT_TRINARY_ARG2,
 366   /* A literal.  The left subtree is the type, and the right subtree
 367      is the value, represented as a DEMANGLE_COMPONENT_NAME.  */
 368   DEMANGLE_COMPONENT_LITERAL,
 369   /* A negative literal.  Like LITERAL, but the value is negated.
 370      This is a minor hack: the NAME used for LITERAL points directly
 371      to the mangled string, but since negative numbers are mangled
 372      using 'n' instead of '-', we want a way to indicate a negative
 373      number which involves neither modifying the mangled string nor
 374      allocating a new copy of the literal in memory.  */
 375   DEMANGLE_COMPONENT_LITERAL_NEG,
 376   /* A libgcj compiled resource.  The left subtree is the name of the
 377      resource.  */
 378   DEMANGLE_COMPONENT_JAVA_RESOURCE,
 379   /* A name formed by the concatenation of two parts.  The left
 380      subtree is the first part and the right subtree the second.  */
 381   DEMANGLE_COMPONENT_COMPOUND_NAME,
 382   /* A name formed by a single character.  */
 383   DEMANGLE_COMPONENT_CHARACTER,
 384   /* A number.  */
 385   DEMANGLE_COMPONENT_NUMBER,
 386   /* A decltype type.  */
 387   DEMANGLE_COMPONENT_DECLTYPE,
 388   /* Global constructors keyed to name.  */
 389   DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS,
 390   /* Global destructors keyed to name.  */
 391   DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS,
 392   /* A lambda closure type.  */
 393   DEMANGLE_COMPONENT_LAMBDA,
 394   /* A default argument scope.  */
 395   DEMANGLE_COMPONENT_DEFAULT_ARG,
 396   /* An unnamed type.  */
 397   DEMANGLE_COMPONENT_UNNAMED_TYPE,
 398   /* A pack expansion.  */
 399   DEMANGLE_COMPONENT_PACK_EXPANSION
 400 };
 401
 402 /* Types which are only used internally.  */
 403
 404 struct demangle_operator_info;
 405 struct demangle_builtin_type_info;
 406
 407 /* A node in the tree representation is an instance of a struct
 408    demangle_component.  Note that the field names of the struct are
 409    not well protected against macros defined by the file including
 410    this one.  We can fix this if it ever becomes a problem.  */
 411
 412 struct demangle_component
 413 {
 414   /* The type of this component.  */
 415   enum demangle_component_type type;
 416
 417   union
 418   {
 419     /* For DEMANGLE_COMPONENT_NAME.  */
 420     struct
 421     {
 422       /* A pointer to the name (which need not NULL terminated) and
 423          its length.  */
 424       const char *s;
 425       int len;
 426     } s_name;
 427
 428     /* For DEMANGLE_COMPONENT_OPERATOR.  */
 429     struct
 430     {
 431       /* Operator.  */
 432       const struct demangle_operator_info *op;
 433     } s_operator;
 434
 435     /* For DEMANGLE_COMPONENT_EXTENDED_OPERATOR.  */
 436     struct
 437     {
 438       /* Number of arguments.  */
 439       int args;
 440       /* Name.  */
 441       struct demangle_component *name;
 442     } s_extended_operator;
 443
 444     /* For DEMANGLE_COMPONENT_FIXED_TYPE.  */
 445     struct
 446     {
 447       /* The length, indicated by a C integer type name.  */
 448       struct demangle_component *length;
 449       /* _Accum or _Fract?  */
 450       short accum;
 451       /* Saturating or not?  */
 452       short sat;
 453     } s_fixed;
 454
 455     /* For DEMANGLE_COMPONENT_CTOR.  */
 456     struct
 457     {
 458       /* Kind of constructor.  */
 459       enum gnu_v3_ctor_kinds kind;
 460       /* Name.  */
 461       struct demangle_component *name;
 462     } s_ctor;
 463
 464     /* For DEMANGLE_COMPONENT_DTOR.  */
 465     struct
 466     {
 467       /* Kind of destructor.  */
 468       enum gnu_v3_dtor_kinds kind;
 469       /* Name.  */
 470       struct demangle_component *name;
 471     } s_dtor;
 472
 473     /* For DEMANGLE_COMPONENT_BUILTIN_TYPE.  */
 474     struct
 475     {
 476       /* Builtin type.  */
 477       const struct demangle_builtin_type_info *type;
 478     } s_builtin;
 479
 480     /* For DEMANGLE_COMPONENT_SUB_STD.  */
 481     struct
 482     {
 483       /* Standard substitution string.  */
 484       const char* string;
 485       /* Length of string.  */
 486       int len;
 487     } s_string;
 488
 489     /* For DEMANGLE_COMPONENT_*_PARAM.  */
 490     struct
 491     {
 492       /* Parameter index.  */
 493       long number;
 494     } s_number;
 495
 496     /* For DEMANGLE_COMPONENT_CHARACTER.  */
 497     struct
 498     {
 499       int character;
 500     } s_character;
 501
 502     /* For other types.  */
 503     struct
 504     {
 505       /* Left (or only) subtree.  */
 506       struct demangle_component *left;
 507       /* Right subtree.  */
 508       struct demangle_component *right;
 509     } s_binary;
 510
 511     struct
 512     {
 513       /* subtree, same place as d_left.  */
 514       struct demangle_component *sub;
 515       /* integer.  */
 516       int num;
 517     } s_unary_num;
 518
 519   } u;
 520 };
 521
 522 /* People building mangled trees are expected to allocate instances of
 523    struct demangle_component themselves.  They can then call one of
 524    the following functions to fill them in.  */
 525
 526 /* Fill in most component types with a left subtree and a right
 527    subtree.  Returns non-zero on success, zero on failure, such as an
 528    unrecognized or inappropriate component type.  */
 529
 530 extern int
 531 cplus_demangle_fill_component (struct demangle_component *fill,
 532                                enum demangle_component_type,
 533                                struct demangle_component *left,
 534                                struct demangle_component *right);
 535
 536 /* Fill in a DEMANGLE_COMPONENT_NAME.  Returns non-zero on success,
 537    zero for bad arguments.  */
 538
 539 extern int
 540 cplus_demangle_fill_name (struct demangle_component *fill,
 541                           const char *, int);
 542
 543 /* Fill in a DEMANGLE_COMPONENT_BUILTIN_TYPE, using the name of the
 544    builtin type (e.g., "int", etc.).  Returns non-zero on success,
 545    zero if the type is not recognized.  */
 546
 547 extern int
 548 cplus_demangle_fill_builtin_type (struct demangle_component *fill,
 549                                   const char *type_name);
 550
 551 /* Fill in a DEMANGLE_COMPONENT_OPERATOR, using the name of the
 552    operator and the number of arguments which it takes (the latter is
 553    used to disambiguate operators which can be both binary and unary,
 554    such as '-').  Returns non-zero on success, zero if the operator is
 555    not recognized.  */
 556
 557 extern int
 558 cplus_demangle_fill_operator (struct demangle_component *fill,
 559                               const char *opname, int args);
 560
 561 /* Fill in a DEMANGLE_COMPONENT_EXTENDED_OPERATOR, providing the
 562    number of arguments and the name.  Returns non-zero on success,
 563    zero for bad arguments.  */
 564
 565 extern int
 566 cplus_demangle_fill_extended_operator (struct demangle_component *fill,
 567                                        int numargs,
 568                                        struct demangle_component *nm);
 569
 570 /* Fill in a DEMANGLE_COMPONENT_CTOR.  Returns non-zero on success,
 571    zero for bad arguments.  */
 572
 573 extern int
 574 cplus_demangle_fill_ctor (struct demangle_component *fill,
 575                           enum gnu_v3_ctor_kinds kind,
 576                           struct demangle_component *name);
 577
 578 /* Fill in a DEMANGLE_COMPONENT_DTOR.  Returns non-zero on success,
 579    zero for bad arguments.  */
 580
 581 extern int
 582 cplus_demangle_fill_dtor (struct demangle_component *fill,
 583                           enum gnu_v3_dtor_kinds kind,
 584                           struct demangle_component *name);
 585
 586 /* This function translates a mangled name into a struct
 587    demangle_component tree.  The first argument is the mangled name.
 588    The second argument is DMGL_* options.  This returns a pointer to a
 589    tree on success, or NULL on failure.  On success, the third
 590    argument is set to a block of memory allocated by malloc.  This
 591    block should be passed to free when the tree is no longer
 592    needed.  */
 593
 594 extern struct demangle_component *
 595 cplus_demangle_v3_components (const char *mangled, int options, void **mem);
 596
 597 /* This function takes a struct demangle_component tree and returns
 598    the corresponding demangled string.  The first argument is DMGL_*
 599    options.  The second is the tree to demangle.  The third is a guess
 600    at the length of the demangled string, used to initially allocate
 601    the return buffer.  The fourth is a pointer to a size_t.  On
 602    success, this function returns a buffer allocated by malloc(), and
 603    sets the size_t pointed to by the fourth argument to the size of
 604    the allocated buffer (not the length of the returned string).  On
 605    failure, this function returns NULL, and sets the size_t pointed to
 606    by the fourth argument to 0 for an invalid tree, or to 1 for a
 607    memory allocation error.  */
 608
 609 extern char *
 610 cplus_demangle_print (int options,
 611                       const struct demangle_component *tree,
 612                       int estimated_length,
 613                       size_t *p_allocated_size);
 614
 615 /* This function takes a struct demangle_component tree and passes back
 616    a demangled string in one or more calls to a callback function.
 617    The first argument is DMGL_* options.  The second is the tree to
 618    demangle.  The third is a pointer to a callback function; on each call
 619    this receives an element of the demangled string, its length, and an
 620    opaque value.  The fourth is the opaque value passed to the callback.
 621    The callback is called once or more to return the full demangled
 622    string.  The demangled element string is always nul-terminated, though
 623    its length is also provided for convenience.  In contrast to
 624    cplus_demangle_print(), this function does not allocate heap memory
 625    to grow output strings (except perhaps where alloca() is implemented
 626    by malloc()), and so is normally safe for use where the heap has been
 627    corrupted.  On success, this function returns 1; on failure, 0.  */
 628
 629 extern int
 630 cplus_demangle_print_callback (int options,
 631                                const struct demangle_component *tree,
 632                                demangle_callbackref callback, void *opaque);
 633
 634 #ifdef __cplusplus
 635 }
 636 #endif /* __cplusplus */
 637
 638 #endif  /* DEMANGLE_H */