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  1. /* Demangler component interface functions.
  2.    Copyright (C) 2004 Free Software Foundation, Inc.
  3.    Written by Ian Lance Taylor <ian@wasabisystems.com>.
  4.  
  5.    This file is part of the libiberty library, which is part of GCC.
  6.  
  7.    This file is free software; you can redistribute it and/or modify
  8.    it under the terms of the GNU General Public License as published by
  9.    the Free Software Foundation; either version 2 of the License, or
  10.    (at your option) any later version.
  11.  
  12.    In addition to the permissions in the GNU General Public License, the
  13.    Free Software Foundation gives you unlimited permission to link the
  14.    compiled version of this file into combinations with other programs,
  15.    and to distribute those combinations without any restriction coming
  16.    from the use of this file.  (The General Public License restrictions
  17.    do apply in other respects; for example, they cover modification of
  18.    the file, and distribution when not linked into a combined
  19.    executable.)
  20.  
  21.    This program is distributed in the hope that it will be useful,
  22.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  23.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24.    GNU General Public License for more details.
  25.  
  26.    You should have received a copy of the GNU General Public License
  27.    along with this program; if not, write to the Free Software
  28.    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  29. */
  30.  
  31. /* This file implements a few interface functions which are provided
  32.    for use with struct demangle_component trees.  These functions are
  33.    declared in demangle.h.  These functions are closely tied to the
  34.    demangler code in cp-demangle.c, and other interface functions can
  35.    be found in that file.  We put these functions in a separate file
  36.    because they are not needed by the demangler, and so we avoid
  37.    having them pulled in by programs which only need the
  38.    demangler.  */
  39.  
  40. #ifdef HAVE_CONFIG_H
  41. #include "config.h"
  42. #endif
  43.  
  44. #ifdef HAVE_STDLIB_H
  45. #include <stdlib.h>
  46. #endif
  47. #ifdef HAVE_STRING_H
  48. #include <string.h>
  49. #endif
  50.  
  51. #include "ansidecl.h"
  52. #include "libiberty.h"
  53. #include "demangle.h"
  54. #include "cp-demangle.h"
  55.  
  56. /* Fill in most component types.  */
  57.  
  58. int
  59. cplus_demangle_fill_component (struct demangle_component *p,
  60.                                enum demangle_component_type type,
  61.                                struct demangle_component *left,
  62.                                 struct demangle_component *right)
  63. {
  64.   if (p == NULL)
  65.     return 0;
  66.   switch (type)
  67.     {
  68.     case DEMANGLE_COMPONENT_QUAL_NAME:
  69.     case DEMANGLE_COMPONENT_LOCAL_NAME:
  70.     case DEMANGLE_COMPONENT_TYPED_NAME:
  71.     case DEMANGLE_COMPONENT_TEMPLATE:
  72.     case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
  73.     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
  74.     case DEMANGLE_COMPONENT_FUNCTION_TYPE:
  75.     case DEMANGLE_COMPONENT_ARRAY_TYPE:
  76.     case DEMANGLE_COMPONENT_PTRMEM_TYPE:
  77.     case DEMANGLE_COMPONENT_ARGLIST:
  78.     case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
  79.     case DEMANGLE_COMPONENT_UNARY:
  80.     case DEMANGLE_COMPONENT_BINARY:
  81.     case DEMANGLE_COMPONENT_BINARY_ARGS:
  82.     case DEMANGLE_COMPONENT_TRINARY:
  83.     case DEMANGLE_COMPONENT_TRINARY_ARG1:
  84.     case DEMANGLE_COMPONENT_TRINARY_ARG2:
  85.     case DEMANGLE_COMPONENT_LITERAL:
  86.     case DEMANGLE_COMPONENT_LITERAL_NEG:
  87.       break;
  88.  
  89.       /* These component types only have one subtree.  */
  90.     case DEMANGLE_COMPONENT_VTABLE:
  91.     case DEMANGLE_COMPONENT_VTT:
  92.     case DEMANGLE_COMPONENT_TYPEINFO:
  93.     case DEMANGLE_COMPONENT_TYPEINFO_NAME:
  94.     case DEMANGLE_COMPONENT_TYPEINFO_FN:
  95.     case DEMANGLE_COMPONENT_THUNK:
  96.     case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
  97.     case DEMANGLE_COMPONENT_COVARIANT_THUNK:
  98.     case DEMANGLE_COMPONENT_JAVA_CLASS:
  99.     case DEMANGLE_COMPONENT_GUARD:
  100.     case DEMANGLE_COMPONENT_REFTEMP:
  101.     case DEMANGLE_COMPONENT_RESTRICT:
  102.     case DEMANGLE_COMPONENT_VOLATILE:
  103.     case DEMANGLE_COMPONENT_CONST:
  104.     case DEMANGLE_COMPONENT_RESTRICT_THIS:
  105.     case DEMANGLE_COMPONENT_VOLATILE_THIS:
  106.     case DEMANGLE_COMPONENT_CONST_THIS:
  107.     case DEMANGLE_COMPONENT_POINTER:
  108.     case DEMANGLE_COMPONENT_REFERENCE:
  109.     case DEMANGLE_COMPONENT_COMPLEX:
  110.     case DEMANGLE_COMPONENT_IMAGINARY:
  111.     case DEMANGLE_COMPONENT_VENDOR_TYPE:
  112.     case DEMANGLE_COMPONENT_CAST:
  113.       if (right != NULL)
  114.         return 0;
  115.       break;
  116.  
  117.     default:
  118.       /* Other types do not use subtrees.  */
  119.       return 0;
  120.     }
  121.  
  122.   p->type = type;
  123.   p->u.s_binary.left = left;
  124.   p->u.s_binary.right = right;
  125.  
  126.   return 1;
  127. }
  128.  
  129. /* Fill in a DEMANGLE_COMPONENT_BUILTIN_TYPE.  */
  130.  
  131. int
  132. cplus_demangle_fill_builtin_type (struct demangle_component *p,
  133.                                   const char *type_name)
  134. {
  135.   int len;
  136.   unsigned int i;
  137.  
  138.   if (p == NULL || type_name == NULL)
  139.     return 0;
  140.   len = strlen (type_name);
  141.   for (i = 0; i < D_BUILTIN_TYPE_COUNT; ++i)
  142.     {
  143.       if (len == cplus_demangle_builtin_types[i].len
  144.           && strcmp (type_name, cplus_demangle_builtin_types[i].name) == 0)
  145.         {
  146.           p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE;
  147.           p->u.s_builtin.type = &cplus_demangle_builtin_types[i];
  148.           return 1;
  149.         }
  150.     }
  151.   return 0;
  152. }
  153.  
  154. /* Fill in a DEMANGLE_COMPONENT_OPERATOR.  */
  155.  
  156. int
  157. cplus_demangle_fill_operator (struct demangle_component *p,
  158.                               const char *opname, int args)
  159. {
  160.   int len;
  161.   unsigned int i;
  162.  
  163.   if (p == NULL || opname == NULL)
  164.     return 0;
  165.   len = strlen (opname);
  166.   for (i = 0; cplus_demangle_operators[i].name != NULL; ++i)
  167.     {
  168.       if (len == cplus_demangle_operators[i].len
  169.           && args == cplus_demangle_operators[i].args
  170.           && strcmp (opname, cplus_demangle_operators[i].name) == 0)
  171.         {
  172.           p->type = DEMANGLE_COMPONENT_OPERATOR;
  173.           p->u.s_operator.op = &cplus_demangle_operators[i];
  174.           return 1;
  175.         }
  176.     }
  177.   return 0;
  178. }
  179.  
  180. /* Translate a mangled name into components.  */
  181.  
  182. struct demangle_component *
  183. cplus_demangle_v3_components (const char *mangled, int options, void **mem)
  184. {
  185.   size_t len;
  186.   int type;
  187.   struct d_info di;
  188.   struct demangle_component *dc;
  189.  
  190.   len = strlen (mangled);
  191.  
  192.   if (mangled[0] == '_' && mangled[1] == 'Z')
  193.     type = 0;
  194.   else
  195.     {
  196.       if ((options & DMGL_TYPES) == 0)
  197.         return NULL;
  198.       type = 1;
  199.     }
  200.  
  201.   cplus_demangle_init_info (mangled, options, len, &di);
  202.  
  203.   di.comps = ((struct demangle_component *)
  204.               malloc (di.num_comps * sizeof (struct demangle_component)));
  205.   di.subs = ((struct demangle_component **)
  206.              malloc (di.num_subs * sizeof (struct demangle_component *)));
  207.   if (di.comps == NULL || di.subs == NULL)
  208.     {
  209.       free (di.comps);
  210.       free (di.subs);
  211.       return NULL;
  212.     }
  213.  
  214.   if (! type)
  215.     dc = cplus_demangle_mangled_name (&di, 1);
  216.   else
  217.     dc = cplus_demangle_type (&di);
  218.  
  219.   /* If DMGL_PARAMS is set, then if we didn't consume the entire
  220.      mangled string, then we didn't successfully demangle it.  */
  221.   if ((options & DMGL_PARAMS) != 0 && d_peek_char (&di) != '\0')
  222.     dc = NULL;
  223.  
  224.   free (di.subs);
  225.  
  226.   if (dc != NULL)
  227.     *mem = di.comps;
  228.   else
  229.     free (di.comps);
  230.  
  231.   return dc;
  232. }
  233.