gee/lazy.c

   1 /* lazy.c generated by valac 0.18.0, the Vala compiler
   2  * generated from lazy.vala, do not modify */
   3
   4 /* lazy.vala
   5  *
   6  * Copyright (C) 2011  Maciej Piechotka
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
  21  *
  22  * Author:
  23  *      Maciej Piechotka <uzytkownik2@gmail.com>
  24  */
  25
  26 #include <glib.h>
  27 #include <glib-object.h>
  28 #include <gobject/gvaluecollector.h>
  29
  30
  31 #define GEE_TYPE_LAZY (gee_lazy_get_type ())
  32 #define GEE_LAZY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEE_TYPE_LAZY, GeeLazy))
  33 #define GEE_LAZY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GEE_TYPE_LAZY, GeeLazyClass))
  34 #define GEE_IS_LAZY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEE_TYPE_LAZY))
  35 #define GEE_IS_LAZY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GEE_TYPE_LAZY))
  36 #define GEE_LAZY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GEE_TYPE_LAZY, GeeLazyClass))
  37
  38 typedef struct _GeeLazy GeeLazy;
  39 typedef struct _GeeLazyClass GeeLazyClass;
  40 typedef struct _GeeLazyPrivate GeeLazyPrivate;
  41 #define _g_destroy_func0(var) (((var == NULL) || (g_destroy_func == NULL)) ? NULL : (var = (g_destroy_func (var), NULL)))
  42 typedef struct _GeeParamSpecLazy GeeParamSpecLazy;
  43
  44 typedef gpointer (*GeeLazyFunc) (void* user_data);
  45 struct _GeeLazy {
  46         GTypeInstance parent_instance;
  47         volatile int ref_count;
  48         GeeLazyPrivate * priv;
  49 };
  50
  51 struct _GeeLazyClass {
  52         GTypeClass parent_class;
  53         void (*finalize) (GeeLazy *self);
  54 };
  55
  56 struct _GeeLazyPrivate {
  57         GType g_type;
  58         GBoxedCopyFunc g_dup_func;
  59         GDestroyNotify g_destroy_func;
  60         GeeLazyFunc _func;
  61         gpointer _func_target;
  62         GDestroyNotify _func_target_destroy_notify;
  63         gpointer _value;
  64 };
  65
  66 struct _GeeParamSpecLazy {
  67         GParamSpec parent_instance;
  68 };
  69
  70
  71 static gpointer gee_lazy_parent_class = NULL;
  72
  73 gpointer gee_lazy_ref (gpointer instance);
  74 void gee_lazy_unref (gpointer instance);
  75 GParamSpec* gee_param_spec_lazy (const gchar* name, const gchar* nick, const gchar* blurb, GType object_type, GParamFlags flags);
  76 void gee_value_set_lazy (GValue* value, gpointer v_object);
  77 void gee_value_take_lazy (GValue* value, gpointer v_object);
  78 gpointer gee_value_get_lazy (const GValue* value);
  79 GType gee_lazy_get_type (void) G_GNUC_CONST;
  80 #define GEE_LAZY_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GEE_TYPE_LAZY, GeeLazyPrivate))
  81 enum  {
  82         GEE_LAZY_DUMMY_PROPERTY
  83 };
  84 GeeLazy* gee_lazy_new (GType g_type, GBoxedCopyFunc g_dup_func, GDestroyNotify g_destroy_func, GeeLazyFunc func, void* func_target, GDestroyNotify func_target_destroy_notify);
  85 GeeLazy* gee_lazy_construct (GType object_type, GType g_type, GBoxedCopyFunc g_dup_func, GDestroyNotify g_destroy_func, GeeLazyFunc func, void* func_target, GDestroyNotify func_target_destroy_notify);
  86 GeeLazy* gee_lazy_new_from_value (GType g_type, GBoxedCopyFunc g_dup_func, GDestroyNotify g_destroy_func, gconstpointer item);
  87 GeeLazy* gee_lazy_construct_from_value (GType object_type, GType g_type, GBoxedCopyFunc g_dup_func, GDestroyNotify g_destroy_func, gconstpointer item);
  88 void gee_lazy_eval (GeeLazy* self);
  89 gpointer gee_lazy_get (GeeLazy* self);
  90 gconstpointer gee_lazy_get_value (GeeLazy* self);
  91 static void gee_lazy_finalize (GeeLazy* obj);
  92
  93
  94 GeeLazy* gee_lazy_construct (GType object_type, GType g_type, GBoxedCopyFunc g_dup_func, GDestroyNotify g_destroy_func, GeeLazyFunc func, void* func_target, GDestroyNotify func_target_destroy_notify) {
  95         GeeLazy* self = NULL;
  96         GeeLazyFunc _tmp0_;
  97         void* _tmp0__target;
  98         GDestroyNotify _tmp0__target_destroy_notify;
  99         self = (GeeLazy*) g_type_create_instance (object_type);
 100         self->priv->g_type = g_type;
 101         self->priv->g_dup_func = g_dup_func;
 102         self->priv->g_destroy_func = g_destroy_func;
 103         _tmp0_ = func;
 104         _tmp0__target = func_target;
 105         _tmp0__target_destroy_notify = func_target_destroy_notify;
 106         func_target_destroy_notify = NULL;
 107         (self->priv->_func_target_destroy_notify == NULL) ? NULL : (self->priv->_func_target_destroy_notify (self->priv->_func_target), NULL);
 108         self->priv->_func = NULL;
 109         self->priv->_func_target = NULL;
 110         self->priv->_func_target_destroy_notify = NULL;
 111         self->priv->_func = _tmp0_;
 112         self->priv->_func_target = _tmp0__target;
 113         self->priv->_func_target_destroy_notify = _tmp0__target_destroy_notify;
 114         (func_target_destroy_notify == NULL) ? NULL : (func_target_destroy_notify (func_target), NULL);
 115         func = NULL;
 116         func_target = NULL;
 117         func_target_destroy_notify = NULL;
 118         return self;
 119 }
 120
 121
 122 GeeLazy* gee_lazy_new (GType g_type, GBoxedCopyFunc g_dup_func, GDestroyNotify g_destroy_func, GeeLazyFunc func, void* func_target, GDestroyNotify func_target_destroy_notify) {
 123         return gee_lazy_construct (GEE_TYPE_LAZY, g_type, g_dup_func, g_destroy_func, func, func_target, func_target_destroy_notify);
 124 }
 125
 126
 127 GeeLazy* gee_lazy_construct_from_value (GType object_type, GType g_type, GBoxedCopyFunc g_dup_func, GDestroyNotify g_destroy_func, gconstpointer item) {
 128         GeeLazy* self = NULL;
 129         gconstpointer _tmp0_;
 130         gpointer _tmp1_;
 131         self = (GeeLazy*) g_type_create_instance (object_type);
 132         self->priv->g_type = g_type;
 133         self->priv->g_dup_func = g_dup_func;
 134         self->priv->g_destroy_func = g_destroy_func;
 135         _tmp0_ = item;
 136         _tmp1_ = ((_tmp0_ != NULL) && (g_dup_func != NULL)) ? g_dup_func ((gpointer) _tmp0_) : ((gpointer) _tmp0_);
 137         _g_destroy_func0 (self->priv->_value);
 138         self->priv->_value = _tmp1_;
 139         return self;
 140 }
 141
 142
 143 GeeLazy* gee_lazy_new_from_value (GType g_type, GBoxedCopyFunc g_dup_func, GDestroyNotify g_destroy_func, gconstpointer item) {
 144         return gee_lazy_construct_from_value (GEE_TYPE_LAZY, g_type, g_dup_func, g_destroy_func, item);
 145 }
 146
 147
 148 void gee_lazy_eval (GeeLazy* self) {
 149         GeeLazyFunc _tmp0_;
 150         void* _tmp0__target;
 151         g_return_if_fail (self != NULL);
 152         _tmp0_ = self->priv->_func;
 153         _tmp0__target = self->priv->_func_target;
 154         if (_tmp0_ != NULL) {
 155                 GeeLazyFunc _tmp1_;
 156                 void* _tmp1__target;
 157                 gpointer _tmp2_ = NULL;
 158                 _tmp1_ = self->priv->_func;
 159                 _tmp1__target = self->priv->_func_target;
 160                 _tmp2_ = _tmp1_ (_tmp1__target);
 161                 ((self->priv->_value == NULL) || (self->priv->g_destroy_func == NULL)) ? NULL : (self->priv->_value = (self->priv->g_destroy_func (self->priv->_value), NULL));
 162                 self->priv->_value = _tmp2_;
 163                 (self->priv->_func_target_destroy_notify == NULL) ? NULL : (self->priv->_func_target_destroy_notify (self->priv->_func_target), NULL);
 164                 self->priv->_func = NULL;
 165                 self->priv->_func_target = NULL;
 166                 self->priv->_func_target_destroy_notify = NULL;
 167                 self->priv->_func = NULL;
 168                 self->priv->_func_target = NULL;
 169                 self->priv->_func_target_destroy_notify = NULL;
 170         }
 171 }
 172
 173
 174 gpointer gee_lazy_get (GeeLazy* self) {
 175         gpointer result = NULL;
 176         gconstpointer _tmp0_;
 177         gpointer _tmp1_;
 178         g_return_val_if_fail (self != NULL, NULL);
 179         gee_lazy_eval (self);
 180         _tmp0_ = self->priv->_value;
 181         _tmp1_ = ((_tmp0_ != NULL) && (self->priv->g_dup_func != NULL)) ? self->priv->g_dup_func ((gpointer) _tmp0_) : ((gpointer) _tmp0_);
 182         result = _tmp1_;
 183         return result;
 184 }
 185
 186
 187 gconstpointer gee_lazy_get_value (GeeLazy* self) {
 188         gconstpointer result;
 189         gconstpointer _tmp0_;
 190         g_return_val_if_fail (self != NULL, NULL);
 191         gee_lazy_eval (self);
 192         _tmp0_ = self->priv->_value;
 193         result = _tmp0_;
 194         return result;
 195 }
 196
 197
 198 static void gee_value_lazy_init (GValue* value) {
 199         value->data[0].v_pointer = NULL;
 200 }
 201
 202
 203 static void gee_value_lazy_free_value (GValue* value) {
 204         if (value->data[0].v_pointer) {
 205                 gee_lazy_unref (value->data[0].v_pointer);
 206         }
 207 }
 208
 209
 210 static void gee_value_lazy_copy_value (const GValue* src_value, GValue* dest_value) {
 211         if (src_value->data[0].v_pointer) {
 212                 dest_value->data[0].v_pointer = gee_lazy_ref (src_value->data[0].v_pointer);
 213         } else {
 214                 dest_value->data[0].v_pointer = NULL;
 215         }
 216 }
 217
 218
 219 static gpointer gee_value_lazy_peek_pointer (const GValue* value) {
 220         return value->data[0].v_pointer;
 221 }
 222
 223
 224 static gchar* gee_value_lazy_collect_value (GValue* value, guint n_collect_values, GTypeCValue* collect_values, guint collect_flags) {
 225         if (collect_values[0].v_pointer) {
 226                 GeeLazy* object;
 227                 object = collect_values[0].v_pointer;
 228                 if (object->parent_instance.g_class == NULL) {
 229                         return g_strconcat ("invalid unclassed object pointer for value type `", G_VALUE_TYPE_NAME (value), "'", NULL);
 230                 } else if (!g_value_type_compatible (G_TYPE_FROM_INSTANCE (object), G_VALUE_TYPE (value))) {
 231                         return g_strconcat ("invalid object type `", g_type_name (G_TYPE_FROM_INSTANCE (object)), "' for value type `", G_VALUE_TYPE_NAME (value), "'", NULL);
 232                 }
 233                 value->data[0].v_pointer = gee_lazy_ref (object);
 234         } else {
 235                 value->data[0].v_pointer = NULL;
 236         }
 237         return NULL;
 238 }
 239
 240
 241 static gchar* gee_value_lazy_lcopy_value (const GValue* value, guint n_collect_values, GTypeCValue* collect_values, guint collect_flags) {
 242         GeeLazy** object_p;
 243         object_p = collect_values[0].v_pointer;
 244         if (!object_p) {
 245                 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
 246         }
 247         if (!value->data[0].v_pointer) {
 248                 *object_p = NULL;
 249         } else if (collect_flags & G_VALUE_NOCOPY_CONTENTS) {
 250                 *object_p = value->data[0].v_pointer;
 251         } else {
 252                 *object_p = gee_lazy_ref (value->data[0].v_pointer);
 253         }
 254         return NULL;
 255 }
 256
 257
 258 GParamSpec* gee_param_spec_lazy (const gchar* name, const gchar* nick, const gchar* blurb, GType object_type, GParamFlags flags) {
 259         GeeParamSpecLazy* spec;
 260         g_return_val_if_fail (g_type_is_a (object_type, GEE_TYPE_LAZY), NULL);
 261         spec = g_param_spec_internal (G_TYPE_PARAM_OBJECT, name, nick, blurb, flags);
 262         G_PARAM_SPEC (spec)->value_type = object_type;
 263         return G_PARAM_SPEC (spec);
 264 }
 265
 266
 267 gpointer gee_value_get_lazy (const GValue* value) {
 268         g_return_val_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, GEE_TYPE_LAZY), NULL);
 269         return value->data[0].v_pointer;
 270 }
 271
 272
 273 void gee_value_set_lazy (GValue* value, gpointer v_object) {
 274         GeeLazy* old;
 275         g_return_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, GEE_TYPE_LAZY));
 276         old = value->data[0].v_pointer;
 277         if (v_object) {
 278                 g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (v_object, GEE_TYPE_LAZY));
 279                 g_return_if_fail (g_value_type_compatible (G_TYPE_FROM_INSTANCE (v_object), G_VALUE_TYPE (value)));
 280                 value->data[0].v_pointer = v_object;
 281                 gee_lazy_ref (value->data[0].v_pointer);
 282         } else {
 283                 value->data[0].v_pointer = NULL;
 284         }
 285         if (old) {
 286                 gee_lazy_unref (old);
 287         }
 288 }
 289
 290
 291 void gee_value_take_lazy (GValue* value, gpointer v_object) {
 292         GeeLazy* old;
 293         g_return_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, GEE_TYPE_LAZY));
 294         old = value->data[0].v_pointer;
 295         if (v_object) {
 296                 g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (v_object, GEE_TYPE_LAZY));
 297                 g_return_if_fail (g_value_type_compatible (G_TYPE_FROM_INSTANCE (v_object), G_VALUE_TYPE (value)));
 298                 value->data[0].v_pointer = v_object;
 299         } else {
 300                 value->data[0].v_pointer = NULL;
 301         }
 302         if (old) {
 303                 gee_lazy_unref (old);
 304         }
 305 }
 306
 307
 308 static void gee_lazy_class_init (GeeLazyClass * klass) {
 309         gee_lazy_parent_class = g_type_class_peek_parent (klass);
 310         GEE_LAZY_CLASS (klass)->finalize = gee_lazy_finalize;
 311         g_type_class_add_private (klass, sizeof (GeeLazyPrivate));
 312 }
 313
 314
 315 static void gee_lazy_instance_init (GeeLazy * self) {
 316         self->priv = GEE_LAZY_GET_PRIVATE (self);
 317         self->ref_count = 1;
 318 }
 319
 320
 321 static void gee_lazy_finalize (GeeLazy* obj) {
 322         GeeLazy * self;
 323         self = G_TYPE_CHECK_INSTANCE_CAST (obj, GEE_TYPE_LAZY, GeeLazy);
 324         (self->priv->_func_target_destroy_notify == NULL) ? NULL : (self->priv->_func_target_destroy_notify (self->priv->_func_target), NULL);
 325         self->priv->_func = NULL;
 326         self->priv->_func_target = NULL;
 327         self->priv->_func_target_destroy_notify = NULL;
 328         ((self->priv->_value == NULL) || (self->priv->g_destroy_func == NULL)) ? NULL : (self->priv->_value = (self->priv->g_destroy_func (self->priv->_value), NULL));
 329 }
 330
 331
 332 /**
 333  * Represents a lazy value. I.e. value that is computed on demand.
 334  */
 335 GType gee_lazy_get_type (void) {
 336         static volatile gsize gee_lazy_type_id__volatile = 0;
 337         if (g_once_init_enter (&gee_lazy_type_id__volatile)) {
 338                 static const GTypeValueTable g_define_type_value_table = { gee_value_lazy_init, gee_value_lazy_free_value, gee_value_lazy_copy_value, gee_value_lazy_peek_pointer, "p", gee_value_lazy_collect_value, "p", gee_value_lazy_lcopy_value };
 339                 static const GTypeInfo g_define_type_info = { sizeof (GeeLazyClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) gee_lazy_class_init, (GClassFinalizeFunc) NULL, NULL, sizeof (GeeLazy), 0, (GInstanceInitFunc) gee_lazy_instance_init, &g_define_type_value_table };
 340                 static const GTypeFundamentalInfo g_define_type_fundamental_info = { (G_TYPE_FLAG_CLASSED | G_TYPE_FLAG_INSTANTIATABLE | G_TYPE_FLAG_DERIVABLE | G_TYPE_FLAG_DEEP_DERIVABLE) };
 341                 GType gee_lazy_type_id;
 342                 gee_lazy_type_id = g_type_register_fundamental (g_type_fundamental_next (), "GeeLazy", &g_define_type_info, &g_define_type_fundamental_info, 0);
 343                 g_once_init_leave (&gee_lazy_type_id__volatile, gee_lazy_type_id);
 344         }
 345         return gee_lazy_type_id__volatile;
 346 }
 347
 348
 349 gpointer gee_lazy_ref (gpointer instance) {
 350         GeeLazy* self;
 351         self = instance;
 352         g_atomic_int_inc (&self->ref_count);
 353         return instance;
 354 }
 355
 356
 357 void gee_lazy_unref (gpointer instance) {
 358         GeeLazy* self;
 359         self = instance;
 360         if (g_atomic_int_dec_and_test (&self->ref_count)) {
 361                 GEE_LAZY_GET_CLASS (self)->finalize (self);
 362                 g_type_free_instance ((GTypeInstance *) self);
 363         }
 364 }
 365
 366
 367