*
* Types registry.
*
- * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
#include <glib.h>
#include <errno.h>
-/*
- * Type hash table contains the registered types. Type registration is typically
- * performed by a type plugin.
- * TODO: support plugin unload (unregistration of types).
- */
-GHashTable *type_classes;
+static
+struct definition *
+ lookup_type_definition_scope(GQuark type_name, struct type_scope *scope)
+{
+ return g_hash_table_lookup(scope->type_definitions,
+ (gconstpointer) (unsigned long) type_name);
+}
+
+struct definition *lookup_type_definition(GQuark type_name, struct type_scope *scope)
+{
+ struct definition *definition;
+
+ while (scope) {
+ definition = lookup_type_definition_scope(type_name, scope);
+ if (definition)
+ return definition;
+ scope = scope->parent_scope;
+ }
+ return NULL;
+}
+
+int register_type_definition(GQuark name, struct definition *definition,
+ struct type_scope *scope)
+{
+ if (!name)
+ return -EPERM;
+
+ /* Only lookup in local scope */
+ if (lookup_type_definition_scope(name, scope))
+ return -EEXIST;
-struct type_class *lookup_type(GQuark qname)
+ g_hash_table_insert(scope->type_definitions,
+ (gpointer) (unsigned long) name,
+ definition);
+ definition_ref(definition);
+ return 0;
+}
+
+static
+struct definition *
+ lookup_field_definition_scope(GQuark field_name, struct definition_scope *scope)
{
- return g_hash_table_lookup(type_classes,
- (gconstpointer) (unsigned long) qname);
+ return g_hash_table_lookup(scope->definitions,
+ (gconstpointer) (unsigned long) field_name);
}
-static void free_type(struct type_class *type_class)
+struct definition *
+ lookup_field_definition(GQuark field_name, struct definition_scope *scope)
{
- type_class->free(type_class);
+ struct definition *definition;
+
+ while (scope) {
+ definition = lookup_field_definition_scope(field_name, scope);
+ if (definition)
+ return definition;
+ scope = scope->parent_scope;
+ }
+ return NULL;
}
-int register_type(struct type_class *type_class)
+int register_field_definition(GQuark field_name, struct definition *definition,
+ struct definition_scope *scope)
{
- if (lookup_type(type_class->name))
+ if (!field_name)
+ return -EPERM;
+
+ /* Only lookup in local scope */
+ if (lookup_field_definition_scope(field_name, scope))
return -EEXIST;
- g_hash_table_insert(type_classes,
- (gpointer) (unsigned long) type_class->name,
- type_class);
+ g_hash_table_insert(scope->definitions,
+ (gpointer) (unsigned long) field_name,
+ definition);
+ definition_ref(definition);
return 0;
}
-void type_ref(struct type_class *type_class)
+void type_ref(struct type *type)
+{
+ type->ref++;
+}
+
+void type_unref(struct type *type)
+{
+ if (!--type->ref)
+ type->type_free(type);
+}
+
+void definition_ref(struct definition *definition)
+{
+ definition->ref++;
+}
+
+void definition_unref(struct definition *definition)
+{
+ if (!--definition->ref)
+ definition->type->definition_free(definition);
+}
+
+struct type_scope *
+ new_type_scope(struct type_scope *parent_scope)
{
- type_class->ref++;
+ struct type_scope *scope = g_new(struct type_scope, 1);
+
+ scope->type_definitions = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) definition_unref);
+ scope->struct_types = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) type_unref);
+ scope->variant_types = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) type_unref);
+ scope->enum_types = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) type_unref);
+ scope->parent_scope = parent_scope;
+ return scope;
}
-void type_unref(struct type_class *type_class)
+void free_type_scope(struct type_scope *scope)
{
- if (!--type_class->ref)
- free_type(type_class);
+ g_hash_table_destroy(scope->enum_types);
+ g_hash_table_destroy(scope->variant_types);
+ g_hash_table_destroy(scope->struct_types);
+ g_hash_table_destroy(scope->type_definitions);
+ g_free(scope);
}
-int init_types(void)
+static
+struct type_struct *lookup_struct_type_scope(GQuark struct_name,
+ struct type_scope *scope)
{
- type_classes = g_hash_table_new_full(g_direct_hash, g_direct_equal,
- NULL, (GDestroyNotify) free_type);
- if (!type_classes)
- return -ENOMEM;
+ return g_hash_table_lookup(scope->struct_types,
+ (gconstpointer) (unsigned long) struct_name);
+}
+
+struct type_struct *lookup_struct_type(GQuark struct_name,
+ struct type_scope *scope)
+{
+ struct type_struct *type;
+
+ while (scope) {
+ type = lookup_struct_type_scope(struct_name, scope);
+ if (type)
+ return type;
+ scope = scope->parent_scope;
+ }
+ return NULL;
+}
+
+int register_struct_type(GQuark struct_name, struct type_struct *struct_type,
+ struct type_scope *scope)
+{
+ if (!struct_name)
+ return -EPERM;
+
+ /* Only lookup in local scope */
+ if (lookup_struct_type_scope(struct_name, scope))
+ return -EEXIST;
+
+ g_hash_table_insert(scope->struct_types,
+ (gpointer) (unsigned long) struct_name,
+ struct_type);
+ type_ref(&struct_type->p);
return 0;
}
-int finalize_types(void)
+static
+struct type_variant *lookup_variant_type_scope(GQuark variant_name,
+ struct type_scope *scope)
+{
+ return g_hash_table_lookup(scope->variant_types,
+ (gconstpointer) (unsigned long) variant_name);
+}
+
+struct type_variant *lookup_variant_type(GQuark variant_name,
+ struct type_scope *scope)
+{
+ struct type_variant *type;
+
+ while (scope) {
+ type = lookup_variant_type_scope(variant_name, scope);
+ if (type)
+ return type;
+ scope = scope->parent_scope;
+ }
+ return NULL;
+}
+
+int register_variant_type(GQuark variant_name,
+ struct type_variant *variant_type,
+ struct type_scope *scope)
{
- g_hash_table_destroy(type_classes);
+ if (!variant_name)
+ return -EPERM;
+
+ /* Only lookup in local scope */
+ if (lookup_variant_type_scope(variant_name, scope))
+ return -EEXIST;
+
+ g_hash_table_insert(scope->variant_types,
+ (gpointer) (unsigned long) variant_name,
+ variant_type);
+ type_ref(&variant_type->p);
return 0;
}
+
+static
+struct type_enum *lookup_enum_type_scope(GQuark enum_name,
+ struct type_scope *scope)
+{
+ return g_hash_table_lookup(scope->enum_types,
+ (gconstpointer) (unsigned long) enum_name);
+}
+
+struct type_enum *lookup_enum_type(GQuark enum_name,
+ struct type_scope *scope)
+{
+ struct type_enum *type;
+
+ while (scope) {
+ type = lookup_enum_type_scope(enum_name, scope);
+ if (type)
+ return type;
+ scope = scope->parent_scope;
+ }
+ return NULL;
+}
+
+int register_enum_type(GQuark enum_name, struct type_enum *enum_type,
+ struct type_scope *scope)
+{
+ if (!enum_name)
+ return -EPERM;
+
+ /* Only lookup in local scope */
+ if (lookup_enum_type_scope(enum_name, scope))
+ return -EEXIST;
+
+ g_hash_table_insert(scope->enum_types,
+ (gpointer) (unsigned long) enum_name,
+ enum_type);
+ type_ref(&enum_type->p);
+ return 0;
+}
+
+struct definition_scope *
+ new_definition_scope(struct definition_scope *parent_scope)
+{
+ struct definition_scope *scope = g_new(struct definition_scope, 1);
+
+ scope->definitions = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) definition_unref);
+ scope->parent_scope = parent_scope;
+ return scope;
+}
+
+void free_definition_scope(struct definition_scope *scope)
+{
+ g_hash_table_destroy(scope->definitions);
+ g_free(scope);
+}
projects / babeltrace.git / blobdiff