1 /* Demangler component interface functions. 2 Copyright (C) 2004-2018 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_RVALUE_REFERENCE: 110 case DEMANGLE_COMPONENT_COMPLEX: 111 case DEMANGLE_COMPONENT_IMAGINARY: 112 case DEMANGLE_COMPONENT_VENDOR_TYPE: 113 case DEMANGLE_COMPONENT_CAST: 114 case DEMANGLE_COMPONENT_CONVERSION: 115 if (right != NULL) 116 return 0; 117 break; 118 119 default: 120 /* Other types do not use subtrees. */ 121 return 0; 122 } 123 124 p->type = type; 125 p->u.s_binary.left = left; 126 p->u.s_binary.right = right; 127 p->d_printing = 0; 128 129 return 1; 130 } 131 132 /* Fill in a DEMANGLE_COMPONENT_BUILTIN_TYPE. */ 133 134 int 135 cplus_demangle_fill_builtin_type (struct demangle_component *p, 136 const char *type_name) 137 { 138 int len; 139 unsigned int i; 140 141 if (p == NULL || type_name == NULL) 142 return 0; 143 len = strlen (type_name); 144 for (i = 0; i < D_BUILTIN_TYPE_COUNT; ++i) 145 { 146 if (len == cplus_demangle_builtin_types[i].len 147 && strcmp (type_name, cplus_demangle_builtin_types[i].name) == 0) 148 { 149 p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE; 150 p->u.s_builtin.type = &cplus_demangle_builtin_types[i]; 151 p->d_printing = 0; 152 return 1; 153 } 154 } 155 return 0; 156 } 157 158 /* Fill in a DEMANGLE_COMPONENT_OPERATOR. */ 159 160 int 161 cplus_demangle_fill_operator (struct demangle_component *p, 162 const char *opname, int args) 163 { 164 int len; 165 unsigned int i; 166 167 if (p == NULL || opname == NULL) 168 return 0; 169 len = strlen (opname); 170 for (i = 0; cplus_demangle_operators[i].name != NULL; ++i) 171 { 172 if (len == cplus_demangle_operators[i].len 173 && args == cplus_demangle_operators[i].args 174 && strcmp (opname, cplus_demangle_operators[i].name) == 0) 175 { 176 p->type = DEMANGLE_COMPONENT_OPERATOR; 177 p->u.s_operator.op = &cplus_demangle_operators[i]; 178 p->d_printing = 0; 179 return 1; 180 } 181 } 182 return 0; 183 } 184 185 /* Translate a mangled name into components. */ 186 187 struct demangle_component * 188 cplus_demangle_v3_components (const char *mangled, int options, void **mem) 189 { 190 size_t len; 191 int type; 192 struct d_info di; 193 struct demangle_component *dc; 194 195 len = strlen (mangled); 196 197 if (mangled[0] == '_' && mangled[1] == 'Z') 198 type = 0; 199 else 200 { 201 if ((options & DMGL_TYPES) == 0) 202 return NULL; 203 type = 1; 204 } 205 206 cplus_demangle_init_info (mangled, options, len, &di); 207 208 di.comps = ((struct demangle_component *) 209 malloc (di.num_comps * sizeof (struct demangle_component))); 210 di.subs = ((struct demangle_component **) 211 malloc (di.num_subs * sizeof (struct demangle_component *))); 212 if (di.comps == NULL || di.subs == NULL) 213 { 214 free (di.comps); 215 free (di.subs); 216 return NULL; 217 } 218 219 if (! type) 220 dc = cplus_demangle_mangled_name (&di, 1); 221 else 222 dc = cplus_demangle_type (&di); 223 224 /* If DMGL_PARAMS is set, then if we didn't consume the entire 225 mangled string, then we didn't successfully demangle it. */ 226 if ((options & DMGL_PARAMS) != 0 && d_peek_char (&di) != '\0') 227 dc = NULL; 228 229 free (di.subs); 230 231 if (dc != NULL) 232 *mem = di.comps; 233 else 234 free (di.comps); 235 236 return dc; 237 } 238