| 1 | /* |
| 2 | * declarations.c |
| 3 | * |
| 4 | * BabelTrace - Converter |
| 5 | * |
| 6 | * Types registry. |
| 7 | * |
| 8 | * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 9 | * |
| 10 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 11 | * of this software and associated documentation files (the "Software"), to deal |
| 12 | * in the Software without restriction, including without limitation the rights |
| 13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 14 | * copies of the Software, and to permit persons to whom the Software is |
| 15 | * furnished to do so, subject to the following conditions: |
| 16 | * |
| 17 | * The above copyright notice and this permission notice shall be included in |
| 18 | * all copies or substantial portions of the Software. |
| 19 | */ |
| 20 | |
| 21 | #include <babeltrace/format.h> |
| 22 | #include <glib.h> |
| 23 | #include <errno.h> |
| 24 | |
| 25 | static |
| 26 | struct definition * |
| 27 | lookup_typedef_declaration_scope(GQuark declaration_name, |
| 28 | struct declaration_scope *scope) |
| 29 | { |
| 30 | return g_hash_table_lookup(scope->typedef_declarations, |
| 31 | (gconstpointer) (unsigned long) declaration_name); |
| 32 | } |
| 33 | |
| 34 | struct definition *lookup_typedef_declaration(GQuark declaration_name, |
| 35 | struct declaration_scope *scope) |
| 36 | { |
| 37 | struct definition *definition; |
| 38 | |
| 39 | while (scope) { |
| 40 | definition = lookup_typedef_declaration_scope(declaration_name, |
| 41 | scope); |
| 42 | if (definition) |
| 43 | return definition; |
| 44 | scope = scope->parent_scope; |
| 45 | } |
| 46 | return NULL; |
| 47 | } |
| 48 | |
| 49 | int register_typedef_declaration(GQuark name, struct declaration *declaration, |
| 50 | struct declaration_scope *scope) |
| 51 | { |
| 52 | if (!name) |
| 53 | return -EPERM; |
| 54 | |
| 55 | /* Only lookup in local scope */ |
| 56 | if (lookup_typedef_declaration_scope(name, scope)) |
| 57 | return -EEXIST; |
| 58 | |
| 59 | g_hash_table_insert(scope->typedef_declarations, |
| 60 | (gpointer) (unsigned long) name, |
| 61 | declaration); |
| 62 | declaration_ref(declaration); |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | static |
| 67 | struct definition * |
| 68 | lookup_field_definition_scope(GQuark field_name, |
| 69 | struct definition_scope *scope) |
| 70 | { |
| 71 | return g_hash_table_lookup(scope->definitions, |
| 72 | (gconstpointer) (unsigned long) field_name); |
| 73 | } |
| 74 | |
| 75 | struct definition * |
| 76 | lookup_field_definition(GQuark field_name, |
| 77 | struct definition_scope *scope) |
| 78 | { |
| 79 | struct definition *definition; |
| 80 | |
| 81 | while (scope) { |
| 82 | definition = lookup_field_definition_scope(field_name, scope); |
| 83 | if (definition) |
| 84 | return definition; |
| 85 | scope = scope->parent_scope; |
| 86 | } |
| 87 | return NULL; |
| 88 | } |
| 89 | |
| 90 | int register_field_definition(GQuark field_name, struct definition *definition, |
| 91 | struct definition_scope *scope) |
| 92 | { |
| 93 | if (!field_name) |
| 94 | return -EPERM; |
| 95 | |
| 96 | /* Only lookup in local scope */ |
| 97 | if (lookup_field_definition_scope(field_name, scope)) |
| 98 | return -EEXIST; |
| 99 | |
| 100 | g_hash_table_insert(scope->definitions, |
| 101 | (gpointer) (unsigned long) field_name, |
| 102 | definition); |
| 103 | definition_ref(definition); |
| 104 | return 0; |
| 105 | } |
| 106 | |
| 107 | void declaration_ref(struct declaration *declaration) |
| 108 | { |
| 109 | declaration->ref++; |
| 110 | } |
| 111 | |
| 112 | void declaration_unref(struct declaration *declaration) |
| 113 | { |
| 114 | if (!--declaration->ref) |
| 115 | declaration->declaration_free(declaration); |
| 116 | } |
| 117 | |
| 118 | void definition_ref(struct definition *definition) |
| 119 | { |
| 120 | definition->ref++; |
| 121 | } |
| 122 | |
| 123 | void definition_unref(struct definition *definition) |
| 124 | { |
| 125 | if (!--definition->ref) |
| 126 | definition->declaration->definition_free(definition); |
| 127 | } |
| 128 | |
| 129 | struct declaration_scope * |
| 130 | new_declaration_scope(struct declaration_scope *parent_scope) |
| 131 | { |
| 132 | struct declaration_scope *scope = g_new(struct declaration_scope, 1); |
| 133 | |
| 134 | scope->typedef_declarations = g_hash_table_new_full(g_direct_hash, |
| 135 | g_direct_equal, NULL, |
| 136 | (GDestroyNotify) definition_unref); |
| 137 | scope->struct_declarations = g_hash_table_new_full(g_direct_hash, |
| 138 | g_direct_equal, NULL, |
| 139 | (GDestroyNotify) declaration_unref); |
| 140 | scope->variant_declarations = g_hash_table_new_full(g_direct_hash, |
| 141 | g_direct_equal, NULL, |
| 142 | (GDestroyNotify) declaration_unref); |
| 143 | scope->enum_declarations = g_hash_table_new_full(g_direct_hash, |
| 144 | g_direct_equal, NULL, |
| 145 | (GDestroyNotify) declaration_unref); |
| 146 | scope->parent_scope = parent_scope; |
| 147 | return scope; |
| 148 | } |
| 149 | |
| 150 | void free_declaration_scope(struct declaration_scope *scope) |
| 151 | { |
| 152 | g_hash_table_destroy(scope->enum_declarations); |
| 153 | g_hash_table_destroy(scope->variant_declarations); |
| 154 | g_hash_table_destroy(scope->struct_declarations); |
| 155 | g_hash_table_destroy(scope->typedef_declarations); |
| 156 | g_free(scope); |
| 157 | } |
| 158 | |
| 159 | static |
| 160 | struct declaration_struct *lookup_struct_declaration_scope(GQuark struct_name, |
| 161 | struct declaration_scope *scope) |
| 162 | { |
| 163 | return g_hash_table_lookup(scope->struct_declarations, |
| 164 | (gconstpointer) (unsigned long) struct_name); |
| 165 | } |
| 166 | |
| 167 | struct declaration_struct *lookup_struct_declaration(GQuark struct_name, |
| 168 | struct declaration_scope *scope) |
| 169 | { |
| 170 | struct declaration_struct *declaration; |
| 171 | |
| 172 | while (scope) { |
| 173 | declaration = lookup_struct_declaration_scope(struct_name, scope); |
| 174 | if (declaration) |
| 175 | return declaration; |
| 176 | scope = scope->parent_scope; |
| 177 | } |
| 178 | return NULL; |
| 179 | } |
| 180 | |
| 181 | int register_struct_declaration(GQuark struct_name, |
| 182 | struct declaration_struct *struct_declaration, |
| 183 | struct declaration_scope *scope) |
| 184 | { |
| 185 | if (!struct_name) |
| 186 | return -EPERM; |
| 187 | |
| 188 | /* Only lookup in local scope */ |
| 189 | if (lookup_struct_declaration_scope(struct_name, scope)) |
| 190 | return -EEXIST; |
| 191 | |
| 192 | g_hash_table_insert(scope->struct_declarations, |
| 193 | (gpointer) (unsigned long) struct_name, |
| 194 | struct_declaration); |
| 195 | declaration_ref(&struct_declaration->p); |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | static |
| 200 | struct declaration_variant * |
| 201 | lookup_variant_declaration_scope(GQuark variant_name, |
| 202 | struct declaration_scope *scope) |
| 203 | { |
| 204 | return g_hash_table_lookup(scope->variant_declarations, |
| 205 | (gconstpointer) (unsigned long) variant_name); |
| 206 | } |
| 207 | |
| 208 | struct declaration_variant * |
| 209 | lookup_variant_declaration(GQuark variant_name, |
| 210 | struct declaration_scope *scope) |
| 211 | { |
| 212 | struct declaration_variant *declaration; |
| 213 | |
| 214 | while (scope) { |
| 215 | declaration = lookup_variant_declaration_scope(variant_name, scope); |
| 216 | if (declaration) |
| 217 | return declaration; |
| 218 | scope = scope->parent_scope; |
| 219 | } |
| 220 | return NULL; |
| 221 | } |
| 222 | |
| 223 | int register_variant_declaration(GQuark variant_name, |
| 224 | struct declaration_variant *variant_declaration, |
| 225 | struct declaration_scope *scope) |
| 226 | { |
| 227 | if (!variant_name) |
| 228 | return -EPERM; |
| 229 | |
| 230 | /* Only lookup in local scope */ |
| 231 | if (lookup_variant_declaration_scope(variant_name, scope)) |
| 232 | return -EEXIST; |
| 233 | |
| 234 | g_hash_table_insert(scope->variant_declarations, |
| 235 | (gpointer) (unsigned long) variant_name, |
| 236 | variant_declaration); |
| 237 | declaration_ref(&variant_declaration->p); |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | static |
| 242 | struct declaration_enum * |
| 243 | lookup_enum_declaration_scope(GQuark enum_name, |
| 244 | struct declaration_scope *scope) |
| 245 | { |
| 246 | return g_hash_table_lookup(scope->enum_declarations, |
| 247 | (gconstpointer) (unsigned long) enum_name); |
| 248 | } |
| 249 | |
| 250 | struct declaration_enum * |
| 251 | lookup_enum_declaration(GQuark enum_name, |
| 252 | struct declaration_scope *scope) |
| 253 | { |
| 254 | struct declaration_enum *declaration; |
| 255 | |
| 256 | while (scope) { |
| 257 | declaration = lookup_enum_declaration_scope(enum_name, scope); |
| 258 | if (declaration) |
| 259 | return declaration; |
| 260 | scope = scope->parent_scope; |
| 261 | } |
| 262 | return NULL; |
| 263 | } |
| 264 | |
| 265 | int register_enum_declaration(GQuark enum_name, |
| 266 | struct declaration_enum *enum_declaration, |
| 267 | struct declaration_scope *scope) |
| 268 | { |
| 269 | if (!enum_name) |
| 270 | return -EPERM; |
| 271 | |
| 272 | /* Only lookup in local scope */ |
| 273 | if (lookup_enum_declaration_scope(enum_name, scope)) |
| 274 | return -EEXIST; |
| 275 | |
| 276 | g_hash_table_insert(scope->enum_declarations, |
| 277 | (gpointer) (unsigned long) enum_name, |
| 278 | enum_declaration); |
| 279 | declaration_ref(&enum_declaration->p); |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | struct definition_scope * |
| 284 | new_definition_scope(struct definition_scope *parent_scope) |
| 285 | { |
| 286 | struct definition_scope *scope = g_new(struct definition_scope, 1); |
| 287 | |
| 288 | scope->definitions = g_hash_table_new_full(g_direct_hash, |
| 289 | g_direct_equal, NULL, |
| 290 | (GDestroyNotify) definition_unref); |
| 291 | scope->parent_scope = parent_scope; |
| 292 | return scope; |
| 293 | } |
| 294 | |
| 295 | void free_definition_scope(struct definition_scope *scope) |
| 296 | { |
| 297 | g_hash_table_destroy(scope->definitions); |
| 298 | g_free(scope); |
| 299 | } |