Recursive Descent Parser code adapted to the new Grammar code and
GObjectified.
git-archimport-id: cascardo@tlscascardo--private/libgrammatic--dev--0.1--patch-6
-rdp_t* rdp_new (nextcb cb, gpointer data, gint value)
+ symbol_t* symbol;
+ gpointer attrib;
+};
- rdp_t* parser;
-
- parser = g_malloc (sizeof (rdp_t));
- parser->cb = cb;
- parser->data = data;
- parser->start = symbol_new (FALSE, value);
-
- parser->rules = NULL;
-
- parser->buffer = g_list_append (NULL, NULL);
+gpointer leaf_new (gpointer data)
+{
+ return g_node_new (data);
+}
+gpointer tree_new (rule_t* rule)
+{
+ return g_node_new (rule);
+}
+gpointer tree_add (gpointer tree, gpointer data)
+{
+ return g_node_append (tree, data);
-void rdp_delete (rdp_t* parser)
+void tree_delete (gpointer tree)
+ g_node_destroy (tree);
+}
- g_free (parser->start);
- g_free (parser);
+static void rdp_init (GTypeInstance* instance, gpointer g_class)
+{
+ Rdp* self = RDP(instance);
+ self->cb = NULL;
+ self->data = NULL;
+ self->buffer = NULL;
+ self->start = NULL;
+}
+static void rdp_finalize (GObject* obj)
+{
+ RdpClass* klass;
+ GObject* parent_class;
+ Rdp* self;
+ self = RDP(obj);
+ g_free (self->start);
+ klass = RDP_GET_CLASS(obj);
+ parent_class = g_type_class_peek_parent (klass);
+ G_OBJECT_CLASS(parent_class)->finalize (obj);
-gpointer leaf_new (gpointer data)
+static void rdp_class_init (RdpClass* klass)
- return g_node_new (data);
+ GObjectClass* gobj_class = G_OBJECT_CLASS(klass);
+ gobj_class->finalize = rdp_finalize;
-gpointer tree_new (rule_t* rule)
- return g_node_new (rule);
+ static GType type = 0;
+ if (type == 0)
+ {
+ static const GTypeInfo info =
+ {
+ sizeof (RdpClass),
+ NULL,
+ NULL,
+ (GClassInitFunc)rdp_class_init,
+ NULL,
+ NULL,
+ sizeof (Rdp),
+ 0,
+ rdp_init
+ };
+ type = g_type_register_static (GRAMMAR_TYPE, "RdpType", &info, 0);
+ }
+ return type;
-gpointer tree_add (gpointer tree, gpointer data)
+Rdp* rdp_new (nextcb cb, gpointer data, gint value)
- return g_node_append (tree, data);
+
+ Rdp* parser;
+
+ parser = g_object_new (RDP_TYPE, NULL);
+
+ parser->cb = cb;
+ parser->data = data;
+ parser->start = symbol_new (FALSE, value);
+
+ parser->buffer = g_list_append (NULL, NULL);
+
+ return parser;
+
-void tree_delete (gpointer tree)
+void rdp_delete (Rdp* parser)
+
+ g_object_unref (parser);
+
-symbol_t* buffer_next (rdp_t* parser, gpointer* attrib)
+symbol_t* buffer_next (Rdp* parser, gpointer* attrib)
-gboolean rdp_step (rdp_t* parser, symbol_t* symbol, gpointer* attrib)
+gboolean rdp_step (Rdp* parser, symbol_t* symbol, gpointer* attrib)
- for (l = g_list_first (parser->rules); l != NULL; l = g_list_next (l))
+ for (l = grammar_get_rules (parser, symbol); l != NULL; l = g_list_next (l))
rule = (rule_t*) l->data;
rule = (rule_t*) l->data;
- if (symbol == NULL || symbol_equal (symbol, rule->left))
- {
-
- GList* m;
- *attrib = tree_new (rule);
+ *attrib = tree_new (symbol_copy (symbol));
- for (m = g_list_first (rule->right); m != NULL; m = g_list_next (m))
- {
+ m = grammar_get_rule (rule);
+ /*
+ if (m == NULL)
+ {
+ tree_add (*attrib, leaf_new (g_string_new ("")));
+ return TRUE;
+ }
+ */
- s = (symbol_t*) m->data;
- if (!rdp_step (parser, s, &attr))
- {
- parser->buffer = buffer;
- break;
- }
- tree_add (*attrib, attr);
+ s = (symbol_t*) m->data;
+ if (!rdp_step (parser, s, &attr))
+ {
+ parser->buffer = buffer;
+ break;
- if (m == NULL)
- return TRUE;
- else
- tree_delete (*attrib);
+ tree_add (*attrib, attr);
+
+ m = g_list_next (m);
+ if (m == NULL)
+ return TRUE;
+ else
+ tree_delete (*attrib);
+
-gpointer rdp_build (rdp_t* parser)
+gpointer rdp_build (Rdp* parser)
#ifndef RDP_H
#define RDP_H
#ifndef RDP_H
#define RDP_H
-typedef struct
-{
- symbol_t* symbol;
- gpointer attrib;
-} buffer_t;
+#define RDP_TYPE (rdp_get_type ())
+#define RDP(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+ RDP_TYPE, Rdp))
+#define RDP_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), \
+ RDP_TYPE, RdpClass))
+#define IS_RDP(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+ RDP_TYPE))
+#define IS_RDP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), \
+ RDP_TYPE))
+#define RDP_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), \
+ RDP_TYPE, RdpClass))
+
+
+typedef struct _buffer buffer_t;
nextcb cb;
gpointer data;
nextcb cb;
gpointer data;
GList* buffer;
symbol_t* start;
GList* buffer;
symbol_t* start;
+} Rdp;
+
+typedef struct
+{
+ GrammarClass parent;
+} RdpClass;
+
+GType rdp_get_type ();
-rdp_t* rdp_new (nextcb, gpointer, gint);
-void rdp_delete (rdp_t*);
-gpointer rdp_build (rdp_t*);
+Rdp* rdp_new (nextcb, gpointer, gint);
+void rdp_delete (Rdp*);
+gpointer rdp_build (Rdp*);