libiberty/cp-demangle.h

   1 /* Internal demangler interface for g++ V3 ABI.
   2    Copyright (C) 2003-2017 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 provides some definitions shared by cp-demangle.c and
  32    cp-demint.c.  It should not be included by any other files.  */
  33
  34 /* Information we keep for operators.  */
  35
  36 struct demangle_operator_info
  37 {
  38   /* Mangled name.  */
  39   const char *code;
  40   /* Real name.  */
  41   const char *name;
  42   /* Length of real name.  */
  43   int len;
  44   /* Number of arguments.  */
  45   int args;
  46 };
  47
  48 /* How to print the value of a builtin type.  */
  49
  50 enum d_builtin_type_print
  51 {
  52   /* Print as (type)val.  */
  53   D_PRINT_DEFAULT,
  54   /* Print as integer.  */
  55   D_PRINT_INT,
  56   /* Print as unsigned integer, with trailing "u".  */
  57   D_PRINT_UNSIGNED,
  58   /* Print as long, with trailing "l".  */
  59   D_PRINT_LONG,
  60   /* Print as unsigned long, with trailing "ul".  */
  61   D_PRINT_UNSIGNED_LONG,
  62   /* Print as long long, with trailing "ll".  */
  63   D_PRINT_LONG_LONG,
  64   /* Print as unsigned long long, with trailing "ull".  */
  65   D_PRINT_UNSIGNED_LONG_LONG,
  66   /* Print as bool.  */
  67   D_PRINT_BOOL,
  68   /* Print as float--put value in square brackets.  */
  69   D_PRINT_FLOAT,
  70   /* Print in usual way, but here to detect void.  */
  71   D_PRINT_VOID
  72 };
  73
  74 /* Information we keep for a builtin type.  */
  75
  76 struct demangle_builtin_type_info
  77 {
  78   /* Type name.  */
  79   const char *name;
  80   /* Length of type name.  */
  81   int len;
  82   /* Type name when using Java.  */
  83   const char *java_name;
  84   /* Length of java name.  */
  85   int java_len;
  86   /* How to print a value of this type.  */
  87   enum d_builtin_type_print print;
  88 };
  89
  90 /* The information structure we pass around.  */
  91
  92 struct d_info
  93 {
  94   /* The string we are demangling.  */
  95   const char *s;
  96   /* The end of the string we are demangling.  */
  97   const char *send;
  98   /* The options passed to the demangler.  */
  99   int options;
 100   /* The next character in the string to consider.  */
 101   const char *n;
 102   /* The array of components.  */
 103   struct demangle_component *comps;
 104   /* The index of the next available component.  */
 105   int next_comp;
 106   /* The number of available component structures.  */
 107   int num_comps;
 108   /* The array of substitutions.  */
 109   struct demangle_component **subs;
 110   /* The index of the next substitution.  */
 111   int next_sub;
 112   /* The number of available entries in the subs array.  */
 113   int num_subs;
 114   /* The number of substitutions which we actually made from the subs
 115      array, plus the number of template parameter references we
 116      saw.  */
 117   int did_subs;
 118   /* The last name we saw, for constructors and destructors.  */
 119   struct demangle_component *last_name;
 120   /* A running total of the length of large expansions from the
 121      mangled name to the demangled name, such as standard
 122      substitutions and builtin types.  */
 123   int expansion;
 124   /* Non-zero if we are parsing an expression.  */
 125   int is_expression;
 126   /* Non-zero if we are parsing the type operand of a conversion
 127      operator, but not when in an expression.  */
 128   int is_conversion;
 129 };
 130
 131 /* To avoid running past the ending '\0', don't:
 132    - call d_peek_next_char if d_peek_char returned '\0'
 133    - call d_advance with an 'i' that is too large
 134    - call d_check_char(di, '\0')
 135    Everything else is safe.  */
 136 #define d_peek_char(di) (*((di)->n))
 137 #ifndef CHECK_DEMANGLER
 138 #  define d_peek_next_char(di) ((di)->n[1])
 139 #  define d_advance(di, i) ((di)->n += (i))
 140 #endif
 141 #define d_check_char(di, c) (d_peek_char(di) == c ? ((di)->n++, 1) : 0)
 142 #define d_next_char(di) (d_peek_char(di) == '\0' ? '\0' : *((di)->n++))
 143 #define d_str(di) ((di)->n)
 144
 145 #ifdef CHECK_DEMANGLER
 146 static inline char
 147 d_peek_next_char (const struct d_info *di)
 148 {
 149   if (!di->n[0])
 150     abort ();
 151   return di->n[1];
 152 }
 153
 154 static inline void
 155 d_advance (struct d_info *di, int i)
 156 {
 157   if (i < 0)
 158     abort ();
 159   while (i--)
 160     {
 161       if (!di->n[0])
 162         abort ();
 163       di->n++;
 164     }
 165 }
 166 #endif
 167
 168 /* Functions and arrays in cp-demangle.c which are referenced by
 169    functions in cp-demint.c.  */
 170 #ifdef IN_GLIBCPP_V3
 171 #define CP_STATIC_IF_GLIBCPP_V3 static
 172 #else
 173 #define CP_STATIC_IF_GLIBCPP_V3 extern
 174 #endif
 175
 176 #ifndef IN_GLIBCPP_V3
 177 extern const struct demangle_operator_info cplus_demangle_operators[];
 178 #endif
 179
 180 #define D_BUILTIN_TYPE_COUNT (33)
 181
 182 CP_STATIC_IF_GLIBCPP_V3
 183 const struct demangle_builtin_type_info
 184 cplus_demangle_builtin_types[D_BUILTIN_TYPE_COUNT];
 185
 186 CP_STATIC_IF_GLIBCPP_V3
 187 struct demangle_component *
 188 cplus_demangle_mangled_name (struct d_info *, int);
 189
 190 CP_STATIC_IF_GLIBCPP_V3
 191 struct demangle_component *
 192 cplus_demangle_type (struct d_info *);
 193
 194 extern void
 195 cplus_demangle_init_info (const char *, int, size_t, struct d_info *);
 196
 197 /* cp-demangle.c needs to define this a little differently */
 198 #undef CP_STATIC_IF_GLIBCPP_V3