meta: update clang-format config

.clang-format

@@ -45,7 +45,7 @@ SpacesBeforeTrailingComments: 3
 TabWidth: 8
 UseTab: AlignWithSpaces
 BreakAfterReturnType: Automatic
-PenaltyBreakAssignment: 1000000
+PenaltyBreakAssignment: 0
 PenaltyReturnTypeOnItsOwnLine: 100000000
 PenaltyExcessCharacter: 10000000
 PenaltyBreakOpenParenthesis: 0

fx.cmdline/arg.c

@@ -1,6 +1,6 @@
 #include "command.h"
 
-#include <fx/cmd.h>
+#include <fx/cmdline/cmd.h>
 #include <fx/string.h>
 #include <stdlib.h>
 #include <string.h>

fx.cmdline/arglist.c

@@ -1,6 +1,6 @@
 #include "command.h"
 
-#include <fx/cmd.h>
+#include <fx/cmdline/cmd.h>
 #include <fx/misc.h>
 #include <fx/string.h>
 #include <fx/term/print.h>

fx.cmdline/command.c

@@ -1,7 +1,7 @@
 #include "command.h"
 
 #include <fx/bst.h>
-#include <fx/cmd.h>
+#include <fx/cmdline/cmd.h>
 #include <fx/string.h>
 #include <fx/term/print.h>
 #include <fx/term/tty.h>

fx.cmdline/command.h

@@ -2,7 +2,7 @@
 #define _FX_COMMAND_H_
 
 #include <fx/bst.h>
-#include <fx/cmd.h>
+#include <fx/cmdline/cmd.h>
 #include <fx/queue.h>
 #include <fx/string.h>
 

fx.cmdline/option.c

@@ -1,6 +1,6 @@
 #include "command.h"
 
-#include <fx/cmd.h>
+#include <fx/cmdline/cmd.h>
 #include <fx/string.h>
 #include <stdlib.h>
 #include <string.h>

fx.cmdline/test/example.c

@@ -1,4 +1,4 @@
-#include <fx/cmd.h>
+#include <fx/cmdline/cmd.h>
 #include <stdio.h>
 
 enum {
@@ -27,16 +27,24 @@ const char *text
 	  "great pleasure.";
 
 static int test_command(
-	const fx_command *self, const fx_arglist *opt, const fx_array *args)
+	const fx_command *self,
+	const fx_arglist *opt,
+	const fx_array *args)
 {
 	printf("Hello, world!\n");
 
 	fx_arglist_iterator it;
 	fx_arglist_iterator_begin(
-		opt, FX_COMMAND_INVALID_ID, FX_COMMAND_INVALID_ID, &it);
+		opt,
+		FX_COMMAND_INVALID_ID,
+		FX_COMMAND_INVALID_ID,
+		&it);
 	while (fx_arglist_iterator_is_valid(&it)) {
-		printf("opt:%u,arg:%u,i:%zu,value: %s\n", it.opt_id,
+		printf("opt:%u,arg:%u,i:%zu,value: %s\n",
-		       it.value->val_id, it.i, it.value->val_str);
+		       it.opt_id,
+		       it.value->val_id,
+		       it.i,
+		       it.value->val_str);
 
 		fx_arglist_iterator_next(&it);
 	}

fx.collections/array.c

@@ -17,7 +17,7 @@ struct fx_array_p {
 };
 
 struct fx_array_iterator_p {
-	fx_array *_a;
+	const fx_array *_a;
 	struct fx_array_p *_a_p;
 
 	/** The index of the current value */
@@ -170,9 +170,7 @@ static fx_value array_get(struct fx_array_p *array, size_t at)
 		return FX_VALUE_EMPTY;
 	}
 
-	fx_value result;
+	return fx_value_copy_return(array->ar_data[at]);
-	fx_value_copy(&result, &array->ar_data[at]);
-	return result;
 }
 
 static size_t array_get_size(const struct fx_array_p *array)
@@ -373,7 +371,7 @@ static fx_status array_to_string(
 
 /*** ITERATOR FUNCTIONS *******************************************************/
 
-static fx_iterator *iterable_begin(fx_object *obj)
+static const fx_iterator *iterable_begin(const fx_object *obj)
 {
 	fx_array_iterator *it_obj = fx_object_create(FX_TYPE_ARRAY_ITERATOR);
 	struct fx_array_iterator_p *it = fx_object_get_private(
@@ -437,7 +435,7 @@ static enum fx_status iterator_erase(fx_iterator *obj)
 	return FX_SUCCESS;
 }
 
-static fx_value iterator_get_value(const fx_iterator *obj)
+static const fx_value *iterator_get_value(const fx_iterator *obj)
 {
 	struct fx_array_iterator_p *it = fx_object_get_private(
 		obj,
@@ -445,10 +443,10 @@ static fx_value iterator_get_value(const fx_iterator *obj)
 	struct fx_array_p *array = it->_a_p;
 
 	if (it->i >= array->ar_len) {
-		return FX_VALUE_EMPTY;
+		return NULL;
 	}
 
-	return *it->value;
+	return it->value;
 }
 
 static enum fx_status iterator_is_valid(const fx_iterator *obj)

fx.collections/hashmap.c

@@ -32,8 +32,9 @@ struct fx_hashmap_p {
 struct fx_hashmap_iterator_p {
 	size_t i;
 	fx_hashmap_item item;
+	fx_value item_value;
 
-	fx_hashmap *_h;
+	const fx_hashmap *_h;
 	struct fx_hashmap_p *_h_p;
 	fx_bst_node *_cbn;
 	fx_queue_entry *_cqe;
@@ -420,7 +421,7 @@ bool fx_hashmap_is_empty(const fx_hashmap *hashmap)
 	FX_CLASS_DISPATCH_STATIC_0(FX_TYPE_HASHMAP, hashmap_is_empty, hashmap);
 }
 
-fx_iterator *fx_hashmap_begin(fx_hashmap *hashmap)
+const fx_iterator *fx_hashmap_begin(const fx_hashmap *hashmap)
 {
 	fx_hashmap_iterator *it_obj = fx_object_create(
 		FX_TYPE_HASHMAP_ITERATOR);
@@ -617,12 +618,13 @@ static enum fx_status iterator_erase(fx_iterator *obj)
 	return FX_SUCCESS;
 }
 
-static fx_value iterator_get_value(const fx_iterator *obj)
+static const fx_value *iterator_get_value(const fx_iterator *obj)
 {
 	struct fx_hashmap_iterator_p *it = fx_object_get_private(
 		obj,
 		FX_TYPE_HASHMAP_ITERATOR);
-	return FX_POINTER(&it->item);
+	it->item_value = FX_POINTER(&it->item);
+	return &it->item_value;
 }
 
 /*** CLASS DEFINITION *********************************************************/
@@ -635,7 +637,6 @@ FX_TYPE_CLASS_BEGIN(fx_hashmap)
 
 	FX_TYPE_VTABLE_INTERFACE_BEGIN(fx_iterable, FX_TYPE_ITERABLE)
 		FX_INTERFACE_ENTRY(it_begin) = fx_hashmap_begin;
-		FX_INTERFACE_ENTRY(it_cbegin) = fx_hashmap_cbegin;
 	FX_TYPE_VTABLE_INTERFACE_END(fx_iterable, FX_TYPE_ITERABLE)
 FX_TYPE_CLASS_END(fx_hashmap)
 

fx.collections/hashtable.c

@@ -1,3 +1,4 @@
+#include <assert.h>
 #include <fx/collections/hashtable.h>
 #include <fx/misc.h>
 #include <fx/reflection/property.h>
@@ -47,8 +48,9 @@ struct fx_hashtable_p {
 struct fx_hashtable_iterator_p {
 	size_t i;
 	fx_hashtable_item *item;
+	fx_value item_value;
 
-	fx_hashtable *_h;
+	const fx_hashtable *_h;
 	struct fx_hashtable_p *_h_p;
 };
 
@@ -67,12 +69,14 @@ static fx_status convert_key_to_index(
 	}
 
 	size_t index = hash % table_size, i = 1;
-	while (table[index].i_item && i < table_size) {
+	bool index_found = false;
+	while (table[index].i_item && i <= table_size) {
 		const struct fx_hashtable_item_p *item = fx_object_get_private(
 			table[index].i_item,
 			FX_TYPE_HASHTABLE_ITEM);
 		int cmp = fx_value_compare(&item->i_key, v);
 		if (cmp == 0) {
+			index_found = true;
 			break;
 		}
 
@@ -80,11 +84,16 @@ static fx_status convert_key_to_index(
 		i++;
 	}
 
+	if (!index_found) {
+		return FX_ERR_NO_ENTRY;
+	}
+
+	assert(index < table_size);
 	*out_index = index;
 	return FX_SUCCESS;
 }
 
-static fx_status find_key(
+static fx_status allocate_index_for_key(
 	const fx_value *v,
 	struct table_item *table,
 	size_t table_size,
@@ -96,15 +105,21 @@ static fx_status find_key(
 		return status;
 	}
 
-	bool found = false;
+	size_t index = hash % table_size;
-	size_t index = hash % table_size, i = 1;
+	bool ok = false;
-	while (table[index].i_item && i < table_size) {
+
+	for (size_t i = 1; i < table_size; i++) {
+		if (!table[index].i_item) {
+			ok = true;
+			break;
+		}
+
 		const struct fx_hashtable_item_p *item = fx_object_get_private(
 			table[index].i_item,
 			FX_TYPE_HASHTABLE_ITEM);
 		int cmp = fx_value_compare(&item->i_key, v);
 		if (cmp == 0) {
-			found = true;
+			ok = true;
 			break;
 		}
 
@@ -112,10 +127,11 @@ static fx_status find_key(
 		i++;
 	}
 
-	if (!found) {
+	if (!ok) {
-		return FX_ERR_NO_ENTRY;
+		return FX_ERR_NO_SPACE;
 	}
 
+	assert(index < table_size);
 	*out_index = index;
 	return FX_SUCCESS;
 }
@@ -126,10 +142,9 @@ static fx_status add_item_to_table(
 	size_t table_capacity)
 {
 	size_t index = 0;
-	struct fx_hashtable_item_p *item_p = fx_object_get_private(
+	struct fx_hashtable_item_p *item_p
-		item,
+		= fx_object_get_private(item, FX_TYPE_HASHTABLE_ITEM);
-		FX_TYPE_HASHTABLE_ITEM);
+	fx_status status = allocate_index_for_key(
-	fx_status status = convert_key_to_index(
 		&item_p->i_key,
 		table,
 		table_capacity,
@@ -231,26 +246,43 @@ static fx_status hashtable_put(
 		if (!FX_OK(status)) {
 			return status;
 		}
+
+		capacity = primes[hashtable->t_max_index];
 	}
 
 	size_t index = 0;
-	status = convert_key_to_index(
+	do {
+		status = allocate_index_for_key(
 			key,
 			hashtable->t_items,
 			capacity,
 			&index);
+		if (status == FX_ERR_NO_SPACE) {
+			status = resize_table(
+				hashtable,
+				hashtable->t_max_index + 1);
 			if (!FX_OK(status)) {
 				return status;
 			}
 
+			capacity = primes[hashtable->t_max_index];
+			continue;
+		}
+
+		if (!FX_OK(status)) {
+			return status;
+		}
+
+		break;
+	} while (1);
+
 	fx_hashtable_item *item = fx_object_create(FX_TYPE_HASHTABLE_ITEM);
 	if (!item) {
 		return FX_ERR_NO_MEMORY;
 	}
 
-	struct fx_hashtable_item_p *item_p = fx_object_get_private(
+	struct fx_hashtable_item_p *item_p
-		item,
+		= fx_object_get_private(item, FX_TYPE_HASHTABLE_ITEM);
-		FX_TYPE_HASHTABLE_ITEM);
 	fx_value_copy(&item_p->i_key, key);
 	fx_value_copy(&item_p->i_value, value);
 
@@ -279,9 +311,8 @@ static const fx_value *hashtable_get(
 		return NULL;
 	}
 
-	const struct fx_hashtable_item_p *item_p = fx_object_get_private(
+	const struct fx_hashtable_item_p *item_p
-		item,
+		= fx_object_get_private(item, FX_TYPE_HASHTABLE_ITEM);
-		FX_TYPE_HASHTABLE_ITEM);
 	return &item_p->i_value;
 }
 
@@ -295,14 +326,16 @@ static bool hashtable_is_empty(const struct fx_hashtable_p *hashtable)
 	return hashtable->t_count == 0;
 }
 
-static fx_value hashtable_item_get_key(const struct fx_hashtable_item_p *item)
+static const fx_value *hashtable_item_get_key(
+	const struct fx_hashtable_item_p *item)
 {
-	return item->i_key;
+	return &item->i_key;
 }
 
-static fx_value hashtable_item_get_value(const struct fx_hashtable_item_p *item)
+static const fx_value *hashtable_item_get_value(
+	const struct fx_hashtable_item_p *item)
 {
-	return item->i_value;
+	return &item->i_value;
 }
 
 /*** PUBLIC FUNCTIONS *********************************************************/
@@ -347,7 +380,7 @@ bool fx_hashtable_is_empty(const fx_hashtable *hashtable)
 		hashtable);
 }
 
-fx_value fx_hashtable_item_get_key(const fx_hashtable_item *item)
+const fx_value *fx_hashtable_item_get_key(const fx_hashtable_item *item)
 {
 	FX_CLASS_DISPATCH_STATIC_0(
 		FX_TYPE_HASHTABLE_ITEM,
@@ -355,7 +388,7 @@ fx_value fx_hashtable_item_get_key(const fx_hashtable_item *item)
 		item);
 }
 
-fx_value fx_hashtable_item_get_value(const fx_hashtable_item *item)
+const fx_value *fx_hashtable_item_get_value(const fx_hashtable_item *item)
 {
 	FX_CLASS_DISPATCH_STATIC_0(
 		FX_TYPE_HASHTABLE_ITEM,
@@ -363,13 +396,12 @@ fx_value fx_hashtable_item_get_value(const fx_hashtable_item *item)
 		item);
 }
 
-fx_iterator *fx_hashtable_begin(fx_hashtable *hashtable)
+const fx_iterator *fx_hashtable_begin(const fx_hashtable *hashtable)
 {
-	fx_hashtable_iterator *it_obj = fx_object_create(
+	fx_hashtable_iterator *it_obj
-		FX_TYPE_HASHTABLE_ITERATOR);
+		= fx_object_create(FX_TYPE_HASHTABLE_ITERATOR);
-	struct fx_hashtable_iterator_p *it = fx_object_get_private(
+	struct fx_hashtable_iterator_p *it
-		it_obj,
+		= fx_object_get_private(it_obj, FX_TYPE_HASHTABLE_ITERATOR);
-		FX_TYPE_HASHTABLE_ITERATOR);
 
 	it->_h = hashtable;
 	it->_h_p = fx_object_get_private(hashtable, FX_TYPE_HASHTABLE);
@@ -387,6 +419,7 @@ fx_iterator *fx_hashtable_begin(fx_hashtable *hashtable)
 		it->i++;
 	}
 
+	it->item_value = FX_VALUE_OBJECT_REF(table[it->i].i_item);
 	return it_obj;
 }
 
@@ -405,6 +438,30 @@ static void hashtable_init(fx_object *obj, void *priv)
 static void hashtable_fini(fx_object *obj, void *priv)
 {
 	struct fx_hashtable_p *map = priv;
+
+	size_t capacity = primes[map->t_max_index];
+	size_t nr_destroyed = 0;
+	for (size_t i = 0; i < capacity; i++) {
+		if (map->t_items[i].i_item) {
+			nr_destroyed++;
+			fx_hashtable_item_unref(map->t_items[i].i_item);
+		}
+	}
+
+	free(map->t_items);
+}
+
+static void hashtable_item_fini(fx_object *obj, void *priv)
+{
+	struct fx_hashtable_item_p *item = priv;
+	fx_value_unset(&item->i_key);
+	fx_value_unset(&item->i_value);
+}
+
+static void hashtable_iterator_fini(fx_object *obj, void *priv)
+{
+	struct fx_hashtable_iterator_p *it = priv;
+	fx_value_unset(&it->item_value);
 }
 
 static fx_status to_string(
@@ -412,9 +469,8 @@ static fx_status to_string(
 	fx_stream *out,
 	const char *format)
 {
-	struct fx_hashtable_p *hashtable = fx_object_get_private(
+	struct fx_hashtable_p *hashtable
-		obj->v_object,
+		= fx_object_get_private(obj->v_object, FX_TYPE_HASHTABLE);
-		FX_TYPE_HASHTABLE);
 
 	if (!hashtable->t_count) {
 		fx_stream_write_cstr(out, "{}", NULL);
@@ -434,9 +490,8 @@ static fx_status to_string(
 		}
 
 		nr_written++;
-		struct fx_hashtable_item_p *item_p = fx_object_get_private(
+		struct fx_hashtable_item_p *item_p
-			item,
+			= fx_object_get_private(item, FX_TYPE_HASHTABLE_ITEM);
-			FX_TYPE_HASHTABLE_ITEM);
 
 		const char *cstr = NULL;
 		fx_value_get_cstr(&item_p->i_key, &cstr);
@@ -487,9 +542,8 @@ static fx_status get_key(
 		return FX_ERR_NOT_SUPPORTED;
 	}
 
-	struct fx_hashtable_item_p *item_p = fx_object_get_private(
+	struct fx_hashtable_item_p *item_p
-		item,
+		= fx_object_get_private(item, FX_TYPE_HASHTABLE_ITEM);
-		FX_TYPE_HASHTABLE_ITEM);
 	fx_value_copy(out, &item_p->i_key);
 
 	return FX_SUCCESS;
@@ -506,9 +560,8 @@ static fx_status get_value(
 		return FX_ERR_NOT_SUPPORTED;
 	}
 
-	struct fx_hashtable_item_p *item_p = fx_object_get_private(
+	struct fx_hashtable_item_p *item_p
-		item,
+		= fx_object_get_private(item, FX_TYPE_HASHTABLE_ITEM);
-		FX_TYPE_HASHTABLE_ITEM);
 	fx_value_copy(out, &item_p->i_value);
 
 	return FX_SUCCESS;
@@ -518,9 +571,10 @@ static fx_status get_value(
 
 static enum fx_status iterator_move_next(const fx_iterator *obj)
 {
-	struct fx_hashtable_iterator_p *it = fx_object_get_private(
+	struct fx_hashtable_iterator_p *it
-		obj,
+		= fx_object_get_private(obj, FX_TYPE_HASHTABLE_ITERATOR);
-		FX_TYPE_HASHTABLE_ITERATOR);
+
+	fx_value_unset(&it->item_value);
 	struct table_item *table = it->_h_p->t_items;
 	size_t capacity = primes[it->_h_p->t_max_index];
 
@@ -533,14 +587,14 @@ static enum fx_status iterator_move_next(const fx_iterator *obj)
 		return FX_ERR_NO_DATA;
 	}
 
+	it->item_value = FX_VALUE_OBJECT_REF(table[it->i].i_item);
 	return FX_SUCCESS;
 }
 
 static enum fx_status iterator_erase(fx_iterator *obj)
 {
-	struct fx_hashtable_iterator_p *it = fx_object_get_private(
+	struct fx_hashtable_iterator_p *it
-		obj,
+		= fx_object_get_private(obj, FX_TYPE_HASHTABLE_ITERATOR);
-		FX_TYPE_HASHTABLE_ITERATOR);
 
 	struct table_item *table = it->_h_p->t_items;
 	size_t capacity = primes[it->_h_p->t_max_index];
@@ -562,19 +616,18 @@ static enum fx_status iterator_erase(fx_iterator *obj)
 	return FX_SUCCESS;
 }
 
-static fx_value iterator_get_value(const fx_iterator *obj)
+static const fx_value *iterator_get_value(const fx_iterator *obj)
 {
-	struct fx_hashtable_iterator_p *it = fx_object_get_private(
+	struct fx_hashtable_iterator_p *it
-		obj,
+		= fx_object_get_private(obj, FX_TYPE_HASHTABLE_ITERATOR);
-		FX_TYPE_HASHTABLE_ITERATOR);
 	struct table_item *table = it->_h_p->t_items;
 	size_t capacity = primes[it->_h_p->t_max_index];
 
 	if (table[it->i].i_item) {
-		return FX_VALUE_OBJECT(table[it->i].i_item);
+		return &it->item_value;
 	}
 
-	return FX_VALUE_EMPTY;
+	return NULL;
 }
 
 /*** CLASS DEFINITION *********************************************************/
@@ -619,6 +672,7 @@ FX_TYPE_DEFINITION_BEGIN(fx_hashtable_iterator)
 	FX_TYPE_EXTENDS(FX_TYPE_ITERATOR);
 	FX_TYPE_CLASS(fx_hashtable_iterator_class);
 	FX_TYPE_INSTANCE_PRIVATE(struct fx_hashtable_iterator_p);
+	FX_TYPE_INSTANCE_FINI(hashtable_iterator_fini);
 FX_TYPE_DEFINITION_END(fx_hashtable_iterator)
 
 // ---- fx_hashtable_item DEFINITION
@@ -637,4 +691,5 @@ FX_TYPE_DEFINITION_BEGIN(fx_hashtable_item)
 	FX_TYPE_EXTENDS(FX_TYPE_OBJECT);
 	FX_TYPE_CLASS(fx_hashtable_item_class);
 	FX_TYPE_INSTANCE_PRIVATE(struct fx_hashtable_item_p);
+	FX_TYPE_INSTANCE_FINI(hashtable_item_fini);
 FX_TYPE_DEFINITION_END(fx_hashtable_item)

fx.collections/include/fx/collections/hashmap.h

@@ -83,7 +83,7 @@ FX_API bool fx_hashmap_has_key(
 FX_API size_t fx_hashmap_get_size(const fx_hashmap *hashmap);
 FX_API bool fx_hashmap_is_empty(const fx_hashmap *hashmap);
 
-FX_API fx_iterator *fx_hashmap_begin(fx_hashmap *hashmap);
+FX_API const fx_iterator *fx_hashmap_begin(const fx_hashmap *hashmap);
 FX_API const fx_iterator *fx_hashmap_cbegin(const fx_hashmap *hashmap);
 
 FX_DECLS_END;

fx.collections/include/fx/collections/hashtable.h

@@ -45,10 +45,11 @@ FX_API const fx_value *fx_hashtable_get(
 FX_API size_t fx_hashtable_get_count(const fx_hashtable *hashtable);
 FX_API bool fx_hashtable_is_empty(const fx_hashtable *hashtable);
 
-FX_API fx_iterator *fx_hashtable_begin(fx_hashtable *hashtable);
+FX_API const fx_iterator *fx_hashtable_begin(const fx_hashtable *hashtable);
 
-FX_API fx_value fx_hashtable_item_get_key(const fx_hashtable_item *item);
+FX_API const fx_value *fx_hashtable_item_get_key(const fx_hashtable_item *item);
-FX_API fx_value fx_hashtable_item_get_value(const fx_hashtable_item *item);
+FX_API const fx_value *fx_hashtable_item_get_value(
+	const fx_hashtable_item *item);
 
 FX_DECLS_END;
 

fx.collections/include/fx/collections/list.h

@@ -59,8 +59,7 @@ FX_API void fx_list_delete_all(fx_list *q);
 
 FX_API void *fx_list_entry_value(const fx_list_entry *entry);
 
-FX_API fx_iterator *fx_list_begin(fx_list *q);
+FX_API const fx_iterator *fx_list_begin(const fx_list *q);
-FX_API const fx_iterator *fx_list_cbegin(const fx_list *q);
 
 FX_DECLS_END;
 

fx.collections/list.c

@@ -23,6 +23,7 @@ struct fx_list_iterator_p {
 
 	size_t i;
 	void *item;
+	fx_value item_value;
 	fx_list_entry *entry;
 };
 
@@ -401,27 +402,7 @@ void *fx_list_entry_value(const struct fx_list_entry *entry)
 	return entry ? entry->e_data : NULL;
 }
 
-fx_iterator *fx_list_begin(fx_list *q)
+const fx_iterator *fx_list_begin(const fx_list *q)
-{
-	fx_list_iterator *it_obj = fx_object_create(FX_TYPE_LIST_ITERATOR);
-	struct fx_list_iterator_p *it = fx_object_get_private(
-		it_obj,
-		FX_TYPE_LIST_ITERATOR);
-
-	it->_q = q;
-	it->_q_p = fx_object_get_private(q, FX_TYPE_LIST);
-	it->_q_entry = fx_queue_first(&it->_q_p->l_queue);
-
-	it->i = 0;
-	it->entry = fx_unbox(struct fx_list_entry, it->_q_entry, e_entry);
-	if (it->entry) {
-		it->item = it->entry->e_data;
-	}
-
-	return 0;
-}
-
-const fx_iterator *fx_list_cbegin(const fx_list *q)
 {
 	fx_list_iterator *it_obj = fx_object_create(FX_TYPE_LIST_ITERATOR);
 	struct fx_list_iterator_p *it = fx_object_get_private(
@@ -508,13 +489,14 @@ static enum fx_status iterator_erase(fx_iterator *obj)
 	return FX_SUCCESS;
 }
 
-static fx_value iterator_get_value(const fx_iterator *obj)
+static const fx_value *iterator_get_value(const fx_iterator *obj)
 {
 	struct fx_list_iterator_p *it = fx_object_get_private(
 		obj,
 		FX_TYPE_LIST_ITERATOR);
 
-	return FX_POINTER(it->item);
+	it->item_value = FX_POINTER(it->item);
+	return &it->item_value;
 }
 
 /*** CLASS DEFINITION *********************************************************/
@@ -527,7 +509,6 @@ FX_TYPE_CLASS_BEGIN(fx_list)
 
 	FX_TYPE_VTABLE_INTERFACE_BEGIN(fx_iterable, FX_TYPE_ITERABLE)
 		FX_INTERFACE_ENTRY(it_begin) = fx_list_begin;
-		FX_INTERFACE_ENTRY(it_cbegin) = fx_list_cbegin;
 	FX_TYPE_VTABLE_INTERFACE_END(fx_iterable, FX_TYPE_ITERABLE)
 FX_TYPE_CLASS_END(fx_list)
 

fx.collections/test/hashtables.c

@@ -19,13 +19,13 @@ int main(void)
 		printf("no value\n");
 	}
 
-	fx_iterator *it = fx_hashtable_begin(ht);
+	const fx_iterator *it = fx_hashtable_begin(ht);
 	fx_foreach(val, it)
 	{
 		fx_hashtable_item *item = NULL;
-		fx_value_get_object(&val, &item);
+		fx_value_get_object(val, &item);
 		printf("item %p\n", item);
-		fx_value key, value;
+		const fx_value *key, *value;
 		key = fx_hashtable_item_get_key(item);
 		value = fx_hashtable_item_get_value(item);
 
@@ -34,10 +34,10 @@ int main(void)
 		fx_foreach(prop_val, prop_it)
 		{
 			fx_property *prop;
-			fx_value_get_object(&prop_val, &prop);
+			fx_value_get_object(prop_val, &prop);
 			printf("%s = ", fx_property_get_name(prop));
 			fx_value value = FX_VALUE_EMPTY;
-			fx_property_get_value(prop, &val, &value);
+			fx_property_get_value(prop, val, &value);
 			fx_value_to_string(&value, fx_stdout, NULL);
 			printf("\n");
 		}

fx.io/sys/apple/directory.c

@@ -35,6 +35,7 @@ struct fx_directory_iterator_p {
 	fx_directory *root;
 
 	fx_directory_entry entry;
+	fx_value entry_value;
 };
 
 /*** PRIVATE FUNCTIONS ********************************************************/
@@ -375,8 +376,6 @@ fx_result fx_directory_open_temp(fx_directory **out)
 
 		fx_path_unlink(rpath);
 		fx_path_unref(rpath);
-
-		return status;
 	}
 }
 
@@ -512,6 +511,8 @@ static void update_iterator_data(struct fx_directory_iterator_p *it)
 	fx_path *path = fx_path_create_from_cstr(
 		ent->fts_path + fx_path_length(it->_p->d_path_abs) + 1);
 
+	fx_value_unset(&it->entry_value);
+	it->entry_value = FX_POINTER(&it->entry);
 	it->entry.filename = ent->fts_name;
 	it->entry.filepath = path;
 
@@ -619,12 +620,7 @@ fx_iterator *fx_directory_begin(
 	return it_obj;
 }
 
-static fx_iterator *iterator_begin(fx_object *obj)
+static const fx_iterator *iterator_begin(const fx_object *obj)
-{
-	return fx_directory_begin(obj, FX_DIRECTORY_ITERATE_PARENT_FIRST);
-}
-
-static const fx_iterator *iterator_cbegin(const fx_object *obj)
 {
 	return fx_directory_begin(
 		(fx_object *)obj,
@@ -698,13 +694,13 @@ static enum fx_status iterator_erase(fx_iterator *obj)
 	return iterator_move_next(obj);
 }
 
-static fx_value iterator_get_value(const fx_iterator *obj)
+static const fx_value *iterator_get_value(const fx_iterator *obj)
 {
 	struct fx_directory_iterator_p *it = fx_object_get_private(
 		obj,
 		FX_TYPE_DIRECTORY_ITERATOR);
 
-	return FX_POINTER(&it->entry);
+	return &it->entry_value;
 }
 
 /*** CLASS DEFINITION *********************************************************/
@@ -717,7 +713,6 @@ FX_TYPE_CLASS_BEGIN(fx_directory)
 
 	FX_TYPE_VTABLE_INTERFACE_BEGIN(fx_iterable, FX_TYPE_ITERABLE)
 		FX_INTERFACE_ENTRY(it_begin) = iterator_begin;
-		FX_INTERFACE_ENTRY(it_cbegin) = iterator_cbegin;
 	FX_TYPE_VTABLE_INTERFACE_END(fx_iterable, FX_TYPE_ITERABLE)
 FX_TYPE_CLASS_END(fx_directory)
 

fx.io/test/tree.c

@@ -26,7 +26,7 @@ int main(int argc, const char **argv)
 	fx_foreach(val, it)
 	{
 		fx_directory_entry *entry = NULL;
-		fx_value_get_pointer(&val, (void **)&entry);
+		fx_value_get_pointer(val, (void **)&entry);
 		printf("%s\n", fx_path_ptr(entry->filepath));
 	}
 

fx.reflection/assembly.c

@@ -71,10 +71,12 @@ struct fx_assembly_p {
 
 struct fx_assembly_iterator_p {
 	fx_namemap_entry *it_cur;
+	fx_value it_value;
 };
 
 struct fx_assembly_type_iterator_p {
 	struct type *it_item;
+	fx_value it_value;
 };
 
 /*** PRIVATE FUNCTIONS ********************************************************/
@@ -165,11 +167,11 @@ static struct map_item *map_item_next(struct map_item *item)
 	struct map_bucket *bucket = item->i_entry.e_bucket;
 	struct map_entry *next_item = NULL;
 	if (bucket) {
-		struct fx_queue_entry *q_item = fx_queue_next(
+		struct fx_queue_entry *q_item
-			&item->i_entry.e_entry);
+			= fx_queue_next(&item->i_entry.e_entry);
 		if (!q_item) {
-			struct fx_bst_node *node = fx_bst_next(
+			struct fx_bst_node *node
-				&bucket->b_entry.e_node);
+				= fx_bst_next(&bucket->b_entry.e_node);
 			next_item = fx_unbox(struct map_entry, node, e_node);
 		} else {
 			next_item = fx_unbox(struct map_entry, q_item, e_entry);
@@ -185,8 +187,8 @@ static struct map_item *map_item_next(struct map_item *item)
 
 	if (next_item->e_type == MAP_ENTRY_BUCKET) {
 		bucket = (struct map_bucket *)next_item;
-		struct fx_queue_entry *q_item = fx_queue_first(
+		struct fx_queue_entry *q_item
-			&bucket->b_items);
+			= fx_queue_first(&bucket->b_items);
 		next_item = fx_unbox(struct map_entry, q_item, e_entry);
 	}
 
@@ -255,10 +257,8 @@ static void assembly_dump(struct fx_assembly_p *assembly)
 
 	fx_bst_node *cur_node = fx_bst_first(&assembly->a_types.m_entries);
 	while (cur_node) {
-		struct map_entry *entry = fx_unbox(
+		struct map_entry *entry
-			struct map_entry,
+			= fx_unbox(struct map_entry, cur_node, e_node);
-			cur_node,
-			e_node);
 		switch (entry->e_type) {
 		case MAP_ENTRY_ITEM: {
 			struct map_item *item = (struct map_item *)entry;
@@ -268,8 +268,8 @@ static void assembly_dump(struct fx_assembly_p *assembly)
 
 		case MAP_ENTRY_BUCKET: {
 			struct map_bucket *bucket = (struct map_bucket *)entry;
-			fx_queue_entry *cur_qentry = fx_queue_first(
+			fx_queue_entry *cur_qentry
-				&bucket->b_items);
+				= fx_queue_first(&bucket->b_items);
 			while (cur_qentry) {
 				struct map_item *item = fx_unbox(
 					struct map_item,
@@ -289,8 +289,8 @@ static void assembly_dump(struct fx_assembly_p *assembly)
 
 static fx_iterator *assembly_get_types(const struct fx_assembly_p *assembly)
 {
-	fx_assembly_type_iterator *it = fx_object_create(
+	fx_assembly_type_iterator *it
-		fx_assembly_type_iterator_get_type());
+		= fx_object_create(fx_assembly_type_iterator_get_type());
 	if (!it) {
 		return NULL;
 	}
@@ -299,12 +299,15 @@ static fx_iterator *assembly_get_types(const struct fx_assembly_p *assembly)
 		it,
 		fx_assembly_type_iterator_get_type());
 	struct map_item *item = map_first_item(&assembly->a_types);
-	if (item) {
+	if (!item) {
-		it_p->it_item = fx_unbox(struct type, item, e_map_item);
-	} else {
 		fx_iterator_set_status(it, FX_ERR_NO_DATA);
+		return it;
 	}
 
+	it_p->it_item = fx_unbox(struct type, item, e_map_item);
+	const fx_type *ty = fx_type_get_by_id(it_p->it_item->e_type);
+	it_p->it_value = FX_VALUE_OBJECT_REF(ty);
+
 	return it;
 }
 
@@ -341,20 +344,25 @@ static void assembly_get_version(
 
 fx_iterator *fx_assembly_get_all(void)
 {
-	fx_assembly_iterator *it = fx_object_create(
+	fx_assembly_iterator *it
-		fx_assembly_iterator_get_type());
+		= fx_object_create(fx_assembly_iterator_get_type());
 	if (!it) {
 		return NULL;
 	}
 
-	struct fx_assembly_iterator_p *it_p = fx_object_get_private(
+	struct fx_assembly_iterator_p *it_p
-		it,
+		= fx_object_get_private(it, fx_assembly_iterator_get_type());
-		fx_assembly_iterator_get_type());
 	it_p->it_cur = fx_namemap_first(&assembly_map);
 	if (!it_p->it_cur) {
 		fx_iterator_set_status(it, FX_ERR_NO_DATA);
+		return it;
 	}
 
+	struct fx_assembly_p *assembly
+		= fx_unbox(struct fx_assembly_p, it_p->it_cur, a_entry);
+
+	it_p->it_value = FX_VALUE_OBJECT_REF(assembly->a_self);
+
 	return it;
 }
 
@@ -365,10 +373,8 @@ const fx_assembly *fx_assembly_get_by_name(const char *name)
 		return NULL;
 	}
 
-	struct fx_assembly_p *assembly = fx_unbox(
+	struct fx_assembly_p *assembly
-		struct fx_assembly_p,
+		= fx_unbox(struct fx_assembly_p, entry, a_entry);
-		entry,
-		a_entry);
 	return assembly->a_self;
 }
 
@@ -483,51 +489,61 @@ static enum fx_status type_iterator_move_next(const fx_iterator *obj)
 		return FX_ERR_NO_DATA;
 	}
 
+	fx_value_unset(&it->it_value);
 	struct map_item *next = map_item_next(&it->it_item->e_map_item);
 	it->it_item = fx_unbox(struct type, next, e_map_item);
-	return it->it_item ? FX_SUCCESS : FX_ERR_NO_DATA;
+	if (!it->it_item) {
+		return FX_ERR_NO_DATA;
 	}
 
-static fx_value type_iterator_get_value(const fx_iterator *obj)
+	const fx_type *ty = fx_type_get_by_id(it->it_item->e_type);
+	it->it_value = FX_VALUE_OBJECT_REF(ty);
+
+	return FX_SUCCESS;
+}
+
+static const fx_value *type_iterator_get_value(const fx_iterator *obj)
 {
 	struct fx_assembly_type_iterator_p *it = fx_object_get_private(
 		obj,
 		fx_assembly_type_iterator_get_type());
 	if (!it->it_item) {
-		return FX_VALUE_EMPTY;
+		return NULL;
 	}
 
-	const fx_type *ty = fx_type_get_by_id(it->it_item->e_type);
+	return &it->it_value;
-	return FX_VALUE_OBJECT(ty);
 }
 
 static enum fx_status assembly_iterator_move_next(const fx_iterator *obj)
 {
-	struct fx_assembly_iterator_p *it = fx_object_get_private(
+	struct fx_assembly_iterator_p *it
-		obj,
+		= fx_object_get_private(obj, fx_assembly_iterator_get_type());
-		fx_assembly_iterator_get_type());
 	if (!it->it_cur) {
 		return FX_ERR_NO_DATA;
 	}
 
+	fx_value_unset(&it->it_value);
 	it->it_cur = fx_namemap_next(&assembly_map, it->it_cur);
-	return it->it_cur ? FX_SUCCESS : FX_ERR_NO_DATA;
-}
-
-static fx_value assembly_iterator_get_value(const fx_iterator *obj)
-{
-	struct fx_assembly_iterator_p *it = fx_object_get_private(
-		obj,
-		fx_assembly_iterator_get_type());
 	if (!it->it_cur) {
-		return FX_VALUE_EMPTY;
+		return FX_ERR_NO_DATA;
 	}
 
-	struct fx_assembly_p *assembly = fx_unbox(
+	struct fx_assembly_p *assembly
-		struct fx_assembly_p,
+		= fx_unbox(struct fx_assembly_p, it->it_cur, a_entry);
-		it->it_cur,
+
-		a_entry);
+	it->it_value = FX_VALUE_OBJECT_REF(assembly->a_self);
-	return FX_VALUE_OBJECT(assembly->a_self);
+	return FX_SUCCESS;
+}
+
+static const fx_value *assembly_iterator_get_value(const fx_iterator *obj)
+{
+	struct fx_assembly_iterator_p *it
+		= fx_object_get_private(obj, fx_assembly_iterator_get_type());
+	if (!it->it_cur) {
+		return NULL;
+	}
+
+	return &it->it_value;
 }
 
 /*** CLASS DEFINITION *********************************************************/

fx.reflection/type.c

@@ -31,12 +31,14 @@ struct fx_type_p {
 struct fx_type_function_iterator_p {
 	struct fx_namemap *it_src;
 	struct fx_namemap_entry *it_cur;
+	fx_value it_value;
 };
 
 struct fx_type_property_iterator_p {
 	const fx_type_info *it_cur_type;
 	struct fx_namemap *it_src;
 	struct fx_namemap_entry *it_cur;
+	fx_value it_value;
 };
 
 /*** PRIVATE FUNCTIONS ********************************************************/
@@ -77,8 +79,8 @@ const fx_function *type_get_function(
 
 fx_iterator *type_get_functions(const struct fx_type_p *ty)
 {
-	fx_type_function_iterator *it_obj = fx_object_create(
+	fx_type_function_iterator *it_obj
-		FX_REFLECTION_TYPE_TYPE_FUNCTION_ITERATOR);
+		= fx_object_create(FX_REFLECTION_TYPE_TYPE_FUNCTION_ITERATOR);
 	struct fx_type_function_iterator_p *it = fx_object_get_private(
 		it_obj,
 		FX_REFLECTION_TYPE_TYPE_FUNCTION_ITERATOR);
@@ -95,9 +97,8 @@ const fx_property *type_get_property(
 {
 	struct fx_type_info *cur = ty->ty_info;
 	while (cur) {
-		const fx_property *prop = fx_type_info_get_property_by_name(
+		const fx_property *prop
-			cur,
+			= fx_type_info_get_property_by_name(cur, name);
-			name);
 		if (prop) {
 			return prop;
 		}
@@ -114,8 +115,8 @@ const fx_property *type_get_property(
 
 static fx_iterator *type_get_properties(const struct fx_type_p *ty)
 {
-	fx_type_property_iterator *it_obj = fx_object_create(
+	fx_type_property_iterator *it_obj
-		FX_REFLECTION_TYPE_TYPE_PROPERTY_ITERATOR);
+		= fx_object_create(FX_REFLECTION_TYPE_TYPE_PROPERTY_ITERATOR);
 	struct fx_type_property_iterator_p *it = fx_object_get_private(
 		it_obj,
 		FX_REFLECTION_TYPE_TYPE_PROPERTY_ITERATOR);
@@ -129,8 +130,9 @@ static fx_iterator *type_get_properties(const struct fx_type_p *ty)
 			break;
 		}
 
-		const struct fx_type_info *next_type = fx_type_info_get_by_id(
+		const struct fx_type_info *next_type
-			&it->it_cur_type->ty_parent_id);
+			= fx_type_info_get_by_id(&it->it_cur_type
+		                                          ->ty_parent_id);
 		if (!next_type) {
 			break;
 		}
@@ -143,6 +145,10 @@ static fx_iterator *type_get_properties(const struct fx_type_p *ty)
 		fx_iterator_set_status(it_obj, FX_ERR_NO_DATA);
 	}
 
+	struct fx_type_property *prop
+		= fx_unbox(struct fx_type_property, it->it_cur, p_entry);
+	it->it_value = FX_VALUE_OBJECT_REF(prop->p_prop);
+
 	return it_obj;
 }
 
@@ -176,9 +182,8 @@ fx_type *__fx_type_create(struct fx_type_info *type_info)
 		return NULL;
 	}
 
-	struct fx_type_p *p = fx_object_get_private(
+	struct fx_type_p *p
-		out,
+		= fx_object_get_private(out, FX_REFLECTION_TYPE_TYPE);
-		FX_REFLECTION_TYPE_TYPE);
 	p->ty_info = type_info;
 
 	return out;
@@ -300,25 +305,29 @@ static enum fx_status function_iterator_move_next(const fx_iterator *obj)
 		return FX_ERR_NO_DATA;
 	}
 
+	fx_value_unset(&it->it_value);
 	it->it_cur = fx_namemap_next(it->it_src, it->it_cur);
-	return it->it_cur ? FX_SUCCESS : FX_ERR_NO_DATA;
+	if (!it->it_cur) {
+		return FX_ERR_NO_DATA;
 	}
 
-static fx_value function_iterator_get_value(const fx_iterator *obj)
+	struct fx_type_function *func
+		= fx_unbox(struct fx_type_function, it->it_cur, f_entry);
+	it->it_value = FX_VALUE_OBJECT_REF(func->f_func);
+
+	return FX_SUCCESS;
+}
+
+static const fx_value *function_iterator_get_value(const fx_iterator *obj)
 {
 	struct fx_type_function_iterator_p *it = fx_object_get_private(
 		obj,
 		FX_REFLECTION_TYPE_TYPE_FUNCTION_ITERATOR);
 	if (!it->it_cur) {
-		return FX_VALUE_EMPTY;
+		return NULL;
 	}
 
-	struct fx_type_function *func = fx_unbox(
+	return &it->it_value;
-		struct fx_type_function,
-		it->it_cur,
-		f_entry);
-
-	return FX_VALUE_OBJECT(func->f_func);
 }
 
 static enum fx_status property_iterator_move_next(const fx_iterator *obj)
@@ -337,8 +346,9 @@ static enum fx_status property_iterator_move_next(const fx_iterator *obj)
 			return FX_ERR_NO_DATA;
 		}
 
-		const struct fx_type_info *next_type = fx_type_info_get_by_id(
+		const struct fx_type_info *next_type
-			&it->it_cur_type->ty_parent_id);
+			= fx_type_info_get_by_id(&it->it_cur_type
+		                                          ->ty_parent_id);
 		if (!next_type) {
 			return FX_ERR_NO_DATA;
 		}
@@ -347,24 +357,30 @@ static enum fx_status property_iterator_move_next(const fx_iterator *obj)
 		it->it_cur = fx_namemap_first(&it->it_cur_type->ty_properties);
 	}
 
-	return it->it_cur ? FX_SUCCESS : FX_ERR_NO_DATA;
+	if (!it->it_cur) {
+		return FX_ERR_NO_DATA;
 	}
 
-static fx_value property_iterator_get_value(const fx_iterator *obj)
+	struct fx_type_property *prop
+		= fx_unbox(struct fx_type_property, it->it_cur, p_entry);
+	it->it_value = FX_VALUE_OBJECT_REF(prop->p_prop);
+
+	return FX_SUCCESS;
+}
+
+static const fx_value *property_iterator_get_value(const fx_iterator *obj)
 {
 	struct fx_type_property_iterator_p *it = fx_object_get_private(
 		obj,
 		FX_REFLECTION_TYPE_TYPE_PROPERTY_ITERATOR);
 	if (!it->it_cur) {
-		return FX_VALUE_EMPTY;
+		return NULL;
 	}
 
-	struct fx_type_property *prop = fx_unbox(
+	struct fx_type_property *prop
-		struct fx_type_property,
+		= fx_unbox(struct fx_type_property, it->it_cur, p_entry);
-		it->it_cur,
-		p_entry);
 
-	return FX_VALUE_OBJECT(prop->p_prop);
+	return &it->it_value;
 }
 
 /*** CLASS DEFINITION *********************************************************/

fx.serial/bitcode.c

@@ -5,7 +5,7 @@
 
 static struct fx_error *bitcode_serialise(
 	fx_serial_ctx *serial,
-	fx_object *src,
+	const fx_value *src,
 	fx_stream *dest,
 	enum fx_serial_flags flags)
 {
@@ -15,7 +15,7 @@ static struct fx_error *bitcode_serialise(
 static struct fx_error *bitcode_deserialise(
 	fx_serial_ctx *serial,
 	fx_stream *src,
-	fx_object **dest,
+	fx_value *dest,
 	enum fx_serial_flags flags)
 {
 	return FX_RESULT_ERR(NOT_SUPPORTED);

fx.serial/ctx.c

@@ -44,7 +44,7 @@ FX_TYPE_DEFINITION_END(fx_serial_ctx)
 
 fx_result fx_serial_ctx_serialise(
 	fx_serial_ctx *ctx,
-	fx_object *src,
+	const fx_value *src,
 	fx_stream *dest,
 	enum fx_serial_flags flags)
 {
@@ -62,7 +62,7 @@ fx_result fx_serial_ctx_serialise(
 fx_result fx_serial_ctx_deserialise(
 	fx_serial_ctx *ctx,
 	fx_stream *src,
-	fx_object **dest,
+	fx_value *dest,
 	enum fx_serial_flags flags)
 {
 	FX_CLASS_DISPATCH_VIRTUAL(

fx.serial/include/fx/serial/ctx.h

@@ -6,6 +6,7 @@
 #include <fx/object.h>
 #include <fx/status.h>
 #include <fx/stream.h>
+#include <fx/value.h>
 
 FX_DECLS_BEGIN;
 
@@ -21,13 +22,13 @@ FX_DECLARE_TYPE(fx_serial_ctx);
 FX_TYPE_CLASS_DECLARATION_BEGIN(fx_serial_ctx)
 	fx_result (*s_serialise)(
 		fx_serial_ctx *,
-		fx_object *,
+		const fx_value *,
 		fx_stream *,
 		fx_serial_flags);
 	fx_result (*s_deserialise)(
 		fx_serial_ctx *,
 		fx_stream *,
-		fx_object **,
+		fx_value *,
 		fx_serial_flags);
 FX_TYPE_CLASS_DECLARATION_END(fx_serial_ctx)
 
@@ -39,14 +40,14 @@ FX_API fx_type_id fx_serial_ctx_get_type(void);
 
 FX_API fx_result fx_serial_ctx_serialise(
 	fx_serial_ctx *ctx,
-	fx_object *src,
+	const fx_value *src,
 	fx_stream *dest,
 	fx_serial_flags flags);
 
 FX_API fx_result fx_serial_ctx_deserialise(
 	fx_serial_ctx *ctx,
 	fx_stream *src,
-	fx_object **dest,
+	fx_value *dest,
 	fx_serial_flags flags);
 
 FX_DECLS_END;

fx.serial/test/toml-decode.c

@@ -1,24 +1,26 @@
 #include <fx/bool.h>
 #include <fx/collections/array.h>
-#include <fx/collections/datetime.h>
+#include <fx/collections/hashtable.h>
+#include <fx/datetime.h>
 #include <fx/float.h>
 #include <fx/int.h>
 #include <fx/serial/ctx.h>
 #include <fx/serial/toml.h>
 #include <fx/string.h>
 #include <inttypes.h>
+#include <math.h>
 
-void write_tagged_value(fx_object *data);
+void write_tagged_value(const fx_value *data);
 
 void write_raw_string(const fx_string *data)
 {
 	fx_stream_write_cstr(fx_stdout, "\"", NULL);
 
-	const fx_iterator *it = fx_iterator_cbegin(data);
+	const fx_iterator *it = fx_iterator_begin(data);
 	fx_foreach(val, it)
 	{
 		fx_wchar c;
-		fx_value_get_wchar(&val, &c);
+		fx_value_get_wchar(val, &c);
 		if (c >= 0x10000) {
 			c -= 0x10000;
 			long hi = 0xD800 | ((c >> 10) & 0x3FF);
@@ -54,75 +56,49 @@ void write_tagged_string(fx_string *data)
 	fx_stream_write_cstr(fx_stdout, " }", NULL);
 }
 
-void write_tagged_integer(fx_int *data)
+void write_tagged_integer(const fx_value *data)
 {
-#if 0
 	fx_stream_write_cstr(
 		fx_stdout,
 		"{ \"type\": \"integer\", \"value\": \"",
 		NULL);
-
+	fx_stream_write_fmt(fx_stdout, NULL, "%lld", data->v_i64, NULL);
-	if (fx_int_is_inf_positive(data)) {
-		fx_stream_write_cstr(fx_stdout, "inf", NULL);
-	} else if (fx_int_is_inf_negative(data)) {
-		fx_stream_write_cstr(fx_stdout, "-inf", NULL);
-	} else if (fx_int_is_nan_positive(data)) {
-		fx_stream_write_cstr(fx_stdout, "nan", NULL);
-	} else if (fx_int_is_nan_negative(data)) {
-		fx_stream_write_cstr(fx_stdout, "-nan", NULL);
-	} else {
-		fx_stream_write_fmt(
-			fx_stdout,
-			NULL,
-			"%lld",
-			fx_int_get_value(data),
-			NULL);
-	}
-
 	fx_stream_write_cstr(fx_stdout, "\" }", NULL);
-#endif
 }
 
-void write_tagged_float(fx_double *data)
+void write_tagged_float(const fx_value *data)
 {
-#if 0
 	fx_stream_write_cstr(
 		fx_stdout,
 		"{ \"type\": \"float\", \"value\": \"",
 		NULL);
 
-	if (fx_double_is_inf_positive(data)) {
+	double d = data->v_double;
+	if (d == INFINITY) {
 		fx_stream_write_cstr(fx_stdout, "inf", NULL);
-	} else if (fx_double_is_inf_negative(data)) {
+	} else if (d == -INFINITY) {
 		fx_stream_write_cstr(fx_stdout, "-inf", NULL);
-	} else if (fx_double_is_nan_positive(data)) {
+	} else if (d == NAN) {
 		fx_stream_write_cstr(fx_stdout, "nan", NULL);
-	} else if (fx_double_is_nan_negative(data)) {
+	} else if (d == -NAN) {
 		fx_stream_write_cstr(fx_stdout, "-nan", NULL);
+	} else if (d <= 1e-9 || d >= 1e9) {
+		fx_stream_write_fmt(fx_stdout, NULL, "%g", d, NULL);
 	} else {
-		double v = fx_double_get_value(data);
+		fx_stream_write_fmt(fx_stdout, NULL, "%.9lf", d, NULL);
-		if ((v <= 0.00000001 && v > 0) || (v >= -0.00000001 && v < 0)
-		    || (v >= 1000000000) || (v <= -1000000000)) {
-			fx_stream_write_fmt(fx_stdout, NULL, "%.15e", v, NULL);
-		} else {
-			fx_stream_write_fmt(fx_stdout, NULL, "%.15f", v, NULL);
-		}
 	}
 
 	fx_stream_write_cstr(fx_stdout, "\" }", NULL);
-#endif
 }
 
-void write_tagged_bool(fx_bool *data)
+void write_tagged_bool(const fx_value *data)
 {
-#if 0
 	fx_stream_write_fmt(
 		fx_stdout,
 		NULL,
 		"{ \"type\": \"bool\", \"value\": \"%s\" }",
-		fx_bool_get_value(data) ? "true" : "false",
+		data->v_bool ? "true" : "false",
 		NULL);
-#endif
 }
 
 void write_tagged_datetime(fx_datetime *data)
@@ -152,75 +128,78 @@ void write_tagged_datetime(fx_datetime *data)
 
 	fx_stream_write_cstr(fx_stdout, "\", \"value\": \"", NULL);
 
-	fx_string *new_data = fx_string_create();
+	fx_stringstream *new_data = fx_stringstream_create();
 	fx_datetime_to_string(data, FX_DATETIME_FORMAT_RFC3339, new_data);
-	fx_stream_write_cstr(fx_stdout, fx_string_get_cstr(new_data), NULL);
+	fx_stream_write_cstr(fx_stdout, fx_stringstream_ptr(new_data), NULL);
 
 	fx_stream_write_cstr(fx_stdout, "\" }", NULL);
 
-	fx_string_unref(new_data);
+	fx_stringstream_unref(new_data);
 }
 
-#if 0
+void write_tagged_hashtable(fx_hashtable *data)
-void write_tagged_dict(fx_dict *data)
 {
 	fx_stream_write_cstr(fx_stdout, "{ ", NULL);
 
 	int i = 0;
 
-	fx_iterator *it = fx_iterator_begin(data);
+	const fx_iterator *it = fx_iterator_begin(data);
-	fx_foreach(fx_dict_item *, item, it)
+	fx_foreach(v, it)
 	{
+		fx_hashtable_item *item;
+		fx_value_get_object(v, &item);
 		if (i++ > 0) {
 			fx_stream_write_cstr(fx_stdout, ", ", NULL);
 		}
 
-		write_raw_string(item->key);
+		const fx_value *key = fx_hashtable_item_get_key(item);
+		const fx_value *value = fx_hashtable_item_get_value(item);
+		fx_string *key_str;
+		fx_value_get_object(key, &key_str);
+		write_raw_string(key_str);
 		fx_stream_write_cstr(fx_stdout, ": ", NULL);
-		write_tagged_value(item->value);
+		write_tagged_value(value);
 	}
 	fx_iterator_unref(it);
 
 	fx_stream_write_cstr(fx_stdout, " }", NULL);
 }
-#endif
 
 void write_tagged_array(fx_array *data)
 {
 	fx_stream_write_cstr(fx_stdout, "[ ", NULL);
 
 	int i = 0;
-	fx_iterator *it = fx_iterator_begin(data);
+	const fx_iterator *it = fx_iterator_begin(data);
 	fx_foreach(val, it)
 	{
-		fx_object *obj;
-		fx_value_get_object(&val, &obj);
 		if (i++ > 0) {
 			fx_stream_write_cstr(fx_stdout, ", ", NULL);
 		}
 
-		write_tagged_value(obj);
+		write_tagged_value(val);
 	}
 	fx_iterator_unref(it);
 
 	fx_stream_write_cstr(fx_stdout, " ]", NULL);
 }
 
-void write_tagged_value(fx_object *data)
+void write_tagged_value(const fx_value *data)
 {
-#if 0
+	if (fx_value_is_type(data, FX_TYPE_HASHTABLE)) {
-	if (fx_object_is_type(data, FX_TYPE_DICT)) {
+		write_tagged_hashtable(data->v_object);
-		write_tagged_dict(data);
+	} else if (fx_value_is_type(data, FX_TYPE_ARRAY)) {
-	} else
+		write_tagged_array(data->v_object);
-#endif
+	} else if (fx_value_is_type(data, FX_TYPE_STRING)) {
-	if (fx_object_is_type(data, FX_TYPE_ARRAY)) {
+		write_tagged_string(data->v_object);
-		write_tagged_array(data);
+	} else if (fx_value_is_type(data, FX_TYPE_DATETIME)) {
-	} else if (fx_object_is_type(data, FX_TYPE_STRING)) {
+		write_tagged_datetime(data->v_object);
-		write_tagged_string(data);
+	} else if (fx_value_is_type(data, FX_TYPE_BOOL)) {
-	} else if (fx_object_is_type(data, FX_TYPE_DATETIME)) {
-		write_tagged_datetime(data);
-	} else if (fx_object_is_type(data, FX_TYPE_BOOL)) {
 		write_tagged_bool(data);
+	} else if (fx_value_is_type(data, FX_TYPE_I64)) {
+		write_tagged_integer(data);
+	} else if (fx_value_is_type(data, FX_TYPE_DOUBLE)) {
+		write_tagged_float(data);
 	}
 }
 
@@ -231,19 +210,18 @@ int main(void)
 
 	fx_serial_ctx *ctx = fx_toml_serial_ctx_create();
 
-	fx_object *data;
+	fx_value data;
 	fx_result result = fx_serial_ctx_deserialise(ctx, src, &data, 0);
 	if (fx_result_is_error(result)) {
-		fx_throw(result);
+		return 1;
-		return -1;
 	}
 
-	write_tagged_value(data);
+	write_tagged_value(&data);
 
 	fx_stream_write_char(fx_stdout, '\n');
 
 	fx_serial_ctx_unref(ctx);
-	fx_object_unref(data);
+	fx_value_unset(&data);
 
 	return 0;
 }

fx.serial/toml.c

@@ -1,8 +1,8 @@
 #include <fx/bool.h>
 #include <fx/collections/array.h>
-#include <fx/collections/datetime.h>
 #include <fx/collections/hashmap.h>
 #include <fx/collections/hashtable.h>
+#include <fx/datetime.h>
 #include <fx/error.h>
 #include <fx/float.h>
 #include <fx/int.h>
@@ -11,6 +11,7 @@
 #include <fx/status.h>
 #include <fx/string.h>
 #include <fx/stringstream.h>
+#include <math.h>
 #include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
@@ -116,9 +117,9 @@ struct ctx {
 	fx_stream *ctx_src;
 	fx_string *ctx_wordbuf;
 	fx_string *ctx_linebuf;
-	fx_iterator *ctx_linebuf_ptr;
+	const fx_iterator *ctx_linebuf_ptr;
 	fx_result ctx_result;
-	fx_hashmap *ctx_objects_flags;
+	fx_hashtable *ctx_objects_flags;
 
 	fx_queue ctx_tokens;
 };
@@ -132,29 +133,18 @@ static void ctx_set_object_flags(
 		return;
 	}
 
-	fx_hashmap_key key = {
+	fx_value ptr = FX_POINTER(obj);
-		.key_data = obj,
+	const fx_value *old_value
-		.key_size = sizeof(fx_object *),
+		= fx_hashtable_get(ctx->ctx_objects_flags, &ptr);
-		.key_flags = FX_HASHMAP_KEY_F_INTVALUE,
-	};
-
-	const fx_hashmap_value *old_value = fx_hashmap_get(
-		ctx->ctx_objects_flags,
-		&key);
 
 	enum object_flags new_flags = 0;
 	if (old_value) {
-		new_flags = (enum object_flags)(uintptr_t)old_value->value_data;
+		new_flags = (enum object_flags)old_value->v_i32;
 	}
 
 	new_flags |= flags;
 
-	fx_hashmap_value value = {
+	fx_hashtable_put(ctx->ctx_objects_flags, &ptr, &FX_I32(new_flags));
-		.value_data = (void *)new_flags,
-		.value_size = sizeof new_flags,
-	};
-
-	fx_hashmap_put(ctx->ctx_objects_flags, &key, &value);
 }
 
 static void ctx_clear_object_flags(
@@ -166,29 +156,18 @@ static void ctx_clear_object_flags(
 		return;
 	}
 
-	fx_hashmap_key key = {
+	fx_value ptr = FX_POINTER(obj);
-		.key_data = obj,
+	const fx_value *old_value
-		.key_size = sizeof(fx_object *),
+		= fx_hashtable_get(ctx->ctx_objects_flags, &ptr);
-		.key_flags = FX_HASHMAP_KEY_F_INTVALUE,
-	};
-
-	const fx_hashmap_value *old_value = fx_hashmap_get(
-		ctx->ctx_objects_flags,
-		&key);
 
 	enum object_flags new_flags = 0;
 	if (old_value) {
-		new_flags = (enum object_flags)(uintptr_t)old_value->value_data;
+		new_flags = (enum object_flags)old_value->v_i32;
 	}
 
 	new_flags &= ~mask;
 
-	fx_hashmap_value value = {
+	fx_hashtable_put(ctx->ctx_objects_flags, &ptr, &FX_I32(new_flags));
-		.value_data = (void *)new_flags,
-		.value_size = sizeof new_flags,
-	};
-
-	fx_hashmap_put(ctx->ctx_objects_flags, &key, &value);
 }
 
 static enum object_flags ctx_get_object_flags(struct ctx *ctx, fx_object *obj)
@@ -197,17 +176,13 @@ static enum object_flags ctx_get_object_flags(struct ctx *ctx, fx_object *obj)
 		return 0;
 	}
 
-	fx_hashmap_key key = {
+	fx_value ptr = FX_POINTER(obj);
-		.key_data = obj,
+	const fx_value *old_value
-		.key_size = sizeof(fx_object *),
+		= fx_hashtable_get(ctx->ctx_objects_flags, &ptr);
-		.key_flags = FX_HASHMAP_KEY_F_INTVALUE,
-	};
 
-	const fx_hashmap_value *value = fx_hashmap_get(
+	enum object_flags new_flags = 0;
-		ctx->ctx_objects_flags,
+	if (old_value) {
-		&key);
+		return (enum object_flags)old_value->v_i32;
-	if (value) {
-		return (enum object_flags)(uintptr_t)value->value_data;
 	}
 
 	return 0;
@@ -297,7 +272,7 @@ static fx_wchar advance_char(struct ctx *ctx)
 
 	const char *s = fx_string_get_cstr(ctx->ctx_linebuf);
 
-	fx_wchar c = fx_iterator_get_value(ctx->ctx_linebuf_ptr).v_int;
+	fx_wchar c = fx_iterator_get_value(ctx->ctx_linebuf_ptr)->v_wchar;
 
 	if (!is_valid_char(c)) {
 		ctx->ctx_result = FX_RESULT_ERR(BAD_FORMAT);
@@ -330,7 +305,7 @@ static fx_wchar peek_char(struct ctx *ctx)
 
 	const char *s = fx_string_get_cstr(ctx->ctx_linebuf);
 
-	fx_wchar c = fx_iterator_get_value(ctx->ctx_linebuf_ptr).v_int;
+	fx_wchar c = fx_iterator_get_value(ctx->ctx_linebuf_ptr)->v_wchar;
 
 	if (!is_valid_char(c)) {
 		ctx->ctx_result = FX_RESULT_ERR(BAD_FORMAT);
@@ -929,7 +904,7 @@ static void split_word(struct ctx *ctx, fx_string *wordbuf)
 	fx_foreach(tokv, it)
 	{
 		const char *tok = NULL;
-		fx_value_get_cstr(&tokv, &tok);
+		fx_value_get_cstr(tokv, &tok);
 
 		if (i > 0) {
 			enqueue_token(ctx, TOK_DOT);
@@ -1032,11 +1007,11 @@ static void read_word(struct ctx *ctx)
 		return;
 	}
 
-	fx_iterator *it = fx_iterator_begin(wordbuf);
+	const fx_iterator *it = fx_iterator_begin(wordbuf);
 	fx_foreach(cv, it)
 	{
 		fx_wchar c = FX_WCHAR_INVALID;
-		fx_value_get_wchar(&cv, &c);
+		fx_value_get_wchar(cv, &c);
 		/* only allow ASCII numbers/letters here */
 		bool ok = isalnum(c) || c == '_' || c == '-' || c == '.';
 		if (!ok) {
@@ -1184,8 +1159,8 @@ static void read_string(struct ctx *ctx, bool squote)
 				}
 
 				if (c != '\n') {
-					ctx->ctx_result = FX_RESULT_ERR(
+					ctx->ctx_result
-						BAD_FORMAT);
+						= FX_RESULT_ERR(BAD_FORMAT);
 					fail = true;
 					break;
 				}
@@ -1230,18 +1205,16 @@ static void read_string(struct ctx *ctx, bool squote)
 			case 'U':
 				c = read_unicode_sequence(ctx);
 				if (c == FX_WCHAR_INVALID) {
-					ctx->ctx_result = FX_RESULT_ERR(
+					ctx->ctx_result
-						BAD_FORMAT);
+						= FX_RESULT_ERR(BAD_FORMAT);
 					fail = true;
 					break;
 				}
 
-				ctx->ctx_result = FX_OK(fx_string_append_wc(
+				ctx->ctx_result
-							  str,
+					= FX_OK(fx_string_append_wc(str, c))
-							  c))
 				                ? FX_SUCCESS
-				                        : FX_RESULT_ERR(
+				                : FX_RESULT_ERR(BAD_FORMAT);
-								  BAD_FORMAT);
 				fail = !FX_OK(ctx->ctx_result);
 				break;
 			default:
@@ -1482,14 +1455,24 @@ static fx_result advance_token(struct ctx *ctx)
 
 start:
 	c = peek_char(ctx);
-	while (isspace(c) && c != '\n' && c != '\r') {
+
-		advance_char(ctx);
+	if (c <= 0) {
-		c = peek_char(ctx);
+		if (fx_error_get_status_code(ctx->ctx_result)
+		    == FX_ERR_NO_DATA) {
+			ctx->ctx_flags |= CTX_EOF;
 		}
 
-	if (c == -1) {
+		return ctx->ctx_result;
-		ctx->ctx_flags |= CTX_EOF;
+	}
-		return FX_RESULT_ERR(NO_DATA);
+
+	if (c <= 31 && c != '\n' && c != '\r' && c != '\t') {
+		ctx->ctx_result = FX_RESULT_ERR(BAD_FORMAT);
+		return ctx->ctx_result;
+	}
+
+	while (fx_wchar_is_space(c) && c != '\n' && c != '\r') {
+		advance_char(ctx);
+		c = peek_char(ctx);
 	}
 
 #if 1
@@ -1559,7 +1542,7 @@ static void ctx_cleanup(struct ctx *ctx)
 	}
 
 	if (ctx->ctx_objects_flags) {
-		fx_hashmap_unref(ctx->ctx_objects_flags);
+		fx_hashtable_unref(ctx->ctx_objects_flags);
 		ctx->ctx_objects_flags = NULL;
 	}
 }
@@ -1571,14 +1554,14 @@ static fx_result ctx_init(struct ctx *ctx)
 	ctx->ctx_linebuf = fx_string_create();
 	ctx->ctx_wordbuf = fx_string_create();
 
-	ctx->ctx_objects_flags = fx_hashmap_create(NULL, NULL);
+	ctx->ctx_objects_flags = fx_hashtable_create();
 
 	return FX_RESULT_SUCCESS;
 }
 
 static fx_result toml_serialise(
 	fx_serial_ctx *serial,
-	fx_object *src,
+	const fx_value *src,
 	fx_stream *dest,
 	enum fx_serial_flags flags)
 {
@@ -1672,20 +1655,20 @@ static void print_token(struct token *tok)
 	}
 }
 
-static fx_result parse_value(struct ctx *ctx, fx_object **result);
+static fx_result parse_value(struct ctx *ctx, fx_value *result);
 static fx_result parse_key_value_pair(struct ctx *ctx, fx_hashtable *container);
 
-static fx_result parse_timestamp(struct ctx *ctx, fx_object **result)
+static fx_result parse_timestamp(struct ctx *ctx, fx_value *result)
 {
 	struct token *tok = peek_token(ctx);
 	fx_datetime *dt = tok->tok_value.time;
 	tok->tok_value.time = NULL;
 
-	*result = (dt);
+	*result = FX_VALUE_OBJECT(dt);
 	return FX_RESULT_SUCCESS;
 }
 
-static fx_result parse_string(struct ctx *ctx, fx_object **result)
+static fx_result parse_string(struct ctx *ctx, fx_value *result)
 {
 	struct token *tok = peek_token(ctx);
 	fx_string *str = fx_string_duplicate(tok->tok_str);
@@ -1693,81 +1676,48 @@ static fx_result parse_string(struct ctx *ctx, fx_object **result)
 		return FX_RESULT_ERR(NO_MEMORY);
 	}
 
-	*result = (str);
+	*result = FX_VALUE_OBJECT(str);
 	return FX_RESULT_SUCCESS;
 }
 
-static fx_result parse_int(struct ctx *ctx, fx_object **result)
+static fx_result parse_int(struct ctx *ctx, fx_value *result)
 {
-#if 0
 	struct token *tok = peek_token(ctx);
-	fx_int *val = fx_int_create(tok->tok_value.i.v);
+	*result = FX_I64(tok->tok_value.i.v);
-	if (!val) {
-		return FX_RESULT_ERR(NO_MEMORY);
-	}
-
-	if (tok->tok_value.i.inf) {
-		if (tok->tok_value.i.v >= 0) {
-			fx_int_set_value_inf(val);
-		} else {
-			fx_int_set_value_inf_negative(val);
-		}
-	} else if (tok->tok_value.i.nan) {
-		if (tok->tok_value.i.v >= 0) {
-			fx_int_set_value_nan(val);
-		} else {
-			fx_int_set_value_nan_negative(val);
-		}
-	}
-
-	*result = (val);
-#endif
 	return FX_RESULT_SUCCESS;
 }
 
-static fx_result parse_float(struct ctx *ctx, fx_object **result)
+static fx_result parse_float(struct ctx *ctx, fx_value *result)
 {
-#if 0
 	struct token *tok = peek_token(ctx);
-	fx_double *val = fx_double_create(tok->tok_value.f.v);
-	if (!val) {
-		return FX_RESULT_ERR(NO_MEMORY);
-	}
 
 	if (tok->tok_value.f.inf) {
 		if (tok->tok_value.f.v >= 0) {
-			fx_double_set_value_inf(val);
+			*result = FX_DOUBLE(INFINITY);
 		} else {
-			fx_double_set_value_inf_negative(val);
+			*result = FX_DOUBLE(-INFINITY);
 		}
 	} else if (tok->tok_value.f.nan) {
 		if (tok->tok_value.f.v >= 0) {
-			fx_double_set_value_nan(val);
+			*result = FX_DOUBLE(NAN);
 		} else {
-			fx_double_set_value_nan_negative(val);
+			*result = FX_DOUBLE(-NAN);
 		}
+	} else {
+		*result = FX_DOUBLE(tok->tok_value.f.v);
 	}
 
-	*result = (val);
-#endif
 	return FX_RESULT_SUCCESS;
 }
 
-static fx_result parse_bool(struct ctx *ctx, fx_object **result)
+static fx_result parse_bool(struct ctx *ctx, fx_value *result)
 {
-#if 0
 	struct token *tok = peek_token(ctx);
-	fx_bool *val = fx_bool_create(tok->tok_value.b);
+	*result = FX_BOOL(tok->tok_value.b);
-	if (!val) {
-		return FX_RESULT_ERR(NO_MEMORY);
-	}
-
-	*result = (val);
-#endif
 	return FX_RESULT_SUCCESS;
 }
 
-static fx_result parse_table_inline(struct ctx *ctx, fx_object **result)
+static fx_result parse_table_inline(struct ctx *ctx, fx_value *result)
 {
 	DISABLE_EXTENDED_LEXING(ctx);
 
@@ -1780,7 +1730,7 @@ static fx_result parse_table_inline(struct ctx *ctx, fx_object **result)
 
 	struct token *tok = peek_token(ctx);
 	if (tok && tok->tok_type == TOK_RIGHT_BRACE) {
-		*result = (table);
+		*result = FX_VALUE_OBJECT(table);
 		return FX_RESULT_SUCCESS;
 	}
 
@@ -1814,7 +1764,7 @@ static fx_result parse_table_inline(struct ctx *ctx, fx_object **result)
 		}
 	}
 
-	*result = (table);
+	*result = FX_VALUE_OBJECT(table);
 	return FX_RESULT_SUCCESS;
 }
 
@@ -1828,7 +1778,7 @@ static void skip_newlines(struct ctx *ctx)
 	}
 }
 
-static fx_result parse_array_inline(struct ctx *ctx, fx_object **result)
+static fx_result parse_array_inline(struct ctx *ctx, fx_value *result)
 {
 	bool done = false;
 	ENABLE_EXTENDED_LEXING(ctx);
@@ -1865,16 +1815,15 @@ static fx_result parse_array_inline(struct ctx *ctx, fx_object **result)
 			break;
 		}
 
-		fx_object *value;
+		fx_value value;
 		fx_result status = parse_value(ctx, &value);
 		if (!FX_OK(status)) {
 			fx_array_unref(array);
 			return status;
 		}
 
-#if 0
+		fx_array_push_back(array, value);
-		fx_array_append(array, FX_RV(value));
+		fx_value_unset(&value);
-#endif
 		ENABLE_EXTENDED_LEXING(ctx);
 
 		advance_token(ctx);
@@ -1897,11 +1846,11 @@ static fx_result parse_array_inline(struct ctx *ctx, fx_object **result)
 	}
 
 	DISABLE_EXTENDED_LEXING(ctx);
-	*result = (array);
+	*result = FX_VALUE_OBJECT(array);
 	return FX_RESULT_SUCCESS;
 }
 
-static fx_result parse_value(struct ctx *ctx, fx_object **result)
+static fx_result parse_value(struct ctx *ctx, fx_value *result)
 {
 
 	struct token *tok = peek_token(ctx);
@@ -1948,9 +1897,13 @@ static fx_result parse_key_value_pair(struct ctx *ctx, fx_hashtable *container)
 	}
 
 	while (tok && tok->tok_type == TOK_DOT) {
-		const fx_value *child = fx_hashtable_get(
+		const fx_value *child
-			container,
+			= fx_hashtable_get(container, &FX_VALUE_OBJECT(key));
-			&FX_VALUE_OBJECT(key));
+		if (child && !fx_value_is_type(child, FX_TYPE_HASHTABLE)) {
+			fx_string_unref(key);
+			return FX_RESULT_ERR(BAD_FORMAT);
+		}
+
 		fx_hashmap *subtable = NULL;
 		fx_value_get_object(child, &subtable);
 		if (!subtable) {
@@ -1959,18 +1912,13 @@ static fx_result parse_key_value_pair(struct ctx *ctx, fx_hashtable *container)
 				container,
 				&FX_VALUE_OBJECT(key),
 				&FX_VALUE_OBJECT(subtable));
-		} else if (
-			subtable
-			&& !fx_object_is_type(subtable, FX_TYPE_HASHTABLE)) {
-			free(key);
-			return FX_RESULT_ERR(BAD_FORMAT);
 		}
 
 #if 1
 		enum object_flags flags = ctx_get_object_flags(ctx, subtable);
 		if (flags
 		    & (OBJECT_KV_END_DEFINED | OBJECT_HEADER_END_DEFINED)) {
-			free(key);
+			fx_string_unref(key);
 			return FX_RESULT_ERR(BAD_FORMAT);
 		}
 #endif
@@ -1980,7 +1928,7 @@ static fx_result parse_key_value_pair(struct ctx *ctx, fx_hashtable *container)
 		advance_token(ctx);
 		tok = peek_token(ctx);
 		if (!IS_VALID_KEY_COMPONENT(tok)) {
-			free(key);
+			fx_string_unref(key);
 			return FX_RESULT_ERR(BAD_FORMAT);
 		}
 
@@ -2010,7 +1958,7 @@ static fx_result parse_key_value_pair(struct ctx *ctx, fx_hashtable *container)
 	ENABLE_EXTENDED_LEXING(ctx);
 	advance_token(ctx);
 
-	fx_object *value = NULL;
+	fx_value value = FX_VALUE_EMPTY;
 	fx_result result = parse_value(ctx, &value);
 
 	DISABLE_EXTENDED_LEXING(ctx);
@@ -2025,17 +1973,17 @@ static fx_result parse_key_value_pair(struct ctx *ctx, fx_hashtable *container)
 		return fx_result_propagate(result);
 	}
 
-	fx_hashtable_put(
+	fx_hashtable_put(container, &FX_VALUE_OBJECT(key), &value);
-		container,
-		&FX_VALUE_OBJECT(key),
-		&FX_VALUE_OBJECT(value));
-	fx_object_unref(value);
 
-	if (fx_object_is_type(value, FX_TYPE_HASHTABLE)
+	if (fx_value_is_type(&value, FX_TYPE_HASHTABLE)
-	    || fx_object_is_type(value, FX_TYPE_ARRAY)) {
+	    || fx_value_is_type(&value, FX_TYPE_ARRAY)) {
-		ctx_set_object_flags(ctx, value, OBJECT_KV_END_DEFINED);
+		ctx_set_object_flags(
+			ctx,
+			value.v_object,
+			OBJECT_KV_END_DEFINED);
 	}
 
+	fx_value_unset(&value);
 	return FX_RESULT_SUCCESS;
 }
 
@@ -2062,26 +2010,24 @@ static fx_result parse_table_header(
 	}
 
 	while (tok && tok->tok_type == TOK_DOT) {
-		const fx_value *value = fx_hashtable_get(
+		const fx_value *value
-			container,
+			= fx_hashtable_get(container, &FX_VALUE_OBJECT(key));
-			&FX_VALUE_OBJECT(key));
 		fx_object *subtable = NULL;
 		fx_value_get_object(value, &subtable);
 		enum object_flags flags = ctx_get_object_flags(ctx, subtable);
-		if (!subtable) {
+		if (!value) {
 			subtable = (fx_hashtable_create());
 			fx_hashtable_put(
 				container,
 				&FX_VALUE_OBJECT(key),
 				&FX_VALUE_OBJECT(subtable));
 			fx_object_unref(subtable);
-		} else if (fx_object_is_type(subtable, FX_TYPE_ARRAY)) {
+		} else if (fx_value_is_type(value, FX_TYPE_ARRAY)) {
-#if 0
+			value = fx_array_get_ref(
-			subtable = fx_array_at(
 				subtable,
-				fx_array_size(subtable) - 1);
+				fx_array_get_size(subtable) - 1);
-#endif
+			fx_value_get_object(value, &subtable);
-		} else if (!fx_object_is_type(subtable, FX_TYPE_HASHTABLE)) {
+		} else if (!fx_value_is_type(value, FX_TYPE_HASHTABLE)) {
 			return FX_RESULT_ERR(BAD_FORMAT);
 		}
 
@@ -2112,9 +2058,12 @@ static fx_result parse_table_header(
 		return FX_RESULT_ERR(BAD_FORMAT);
 	}
 
-	const fx_value *child = fx_hashtable_get(
+	const fx_value *child
-		container,
+		= fx_hashtable_get(container, &FX_VALUE_OBJECT(key));
-		&FX_VALUE_OBJECT(key));
+	if (child && !fx_value_is_type(child, FX_TYPE_HASHTABLE)) {
+		return FX_RESULT_ERR(BAD_FORMAT);
+	}
+
 	fx_hashtable *new_table = NULL;
 	fx_value_get_object(child, &new_table);
 
@@ -2122,7 +2071,7 @@ static fx_result parse_table_header(
 		new_table = fx_hashtable_create();
 
 		if (!new_table) {
-			free(key);
+			fx_string_unref(key);
 			return FX_RESULT_ERR(NO_MEMORY);
 		}
 
@@ -2175,26 +2124,29 @@ static fx_result parse_array_header(
 	}
 
 	while (tok && tok->tok_type == TOK_DOT) {
-		const fx_value *child = fx_hashtable_get(
+		const fx_value *child
-			container,
+			= fx_hashtable_get(container, &FX_VALUE_OBJECT(key));
-			&FX_VALUE_OBJECT(key));
 		fx_object *sub_dict = NULL;
 		fx_value_get_object(child, &sub_dict);
 
-		if (!sub_dict) {
+		enum object_flags flags = ctx_get_object_flags(ctx, (sub_dict));
+		if (flags & OBJECT_KV_END_DEFINED) {
+			return FX_RESULT_ERR(BAD_FORMAT);
+		}
+
+		if (!child) {
 			sub_dict = (fx_hashtable_create());
 			fx_hashtable_put(
 				container,
 				&FX_VALUE_OBJECT(key),
 				&FX_VALUE_OBJECT(sub_dict));
 			fx_hashtable_unref(sub_dict);
-		} else if (fx_object_is_type(sub_dict, FX_TYPE_ARRAY)) {
+		} else if (fx_value_is_type(child, FX_TYPE_ARRAY)) {
-#if 0
+			child = fx_array_get_ref(
-			sub_dict = fx_array_at(
 				sub_dict,
-				fx_array_size(sub_dict) - 1);
+				fx_array_get_size(sub_dict) - 1);
-#endif
+			sub_dict = child->v_object;
-		} else if (!fx_object_is_type(sub_dict, FX_TYPE_HASHTABLE)) {
+		} else if (!fx_value_is_type(child, FX_TYPE_HASHTABLE)) {
 			return FX_RESULT_ERR(BAD_FORMAT);
 		}
 
@@ -2219,9 +2171,12 @@ static fx_result parse_array_header(
 		return FX_RESULT_ERR(BAD_FORMAT);
 	}
 
-	const fx_value *child = fx_hashtable_get(
+	const fx_value *child
-		container,
+		= fx_hashtable_get(container, &FX_VALUE_OBJECT(key));
-		&FX_VALUE_OBJECT(key));
+	if (child && !fx_value_is_type(child, FX_TYPE_ARRAY)) {
+		return FX_RESULT_ERR(BAD_FORMAT);
+	}
+
 	fx_array *array = NULL;
 	fx_value_get_object(child, &array);
 
@@ -2234,11 +2189,11 @@ static fx_result parse_array_header(
 	} else if (!fx_object_is_type(array, FX_TYPE_ARRAY)) {
 		return FX_RESULT_ERR(BAD_FORMAT);
 	}
-	free(key);
+	fx_string_unref(key);
 
 	enum object_flags flags = ctx_get_object_flags(ctx, (array));
 	if (flags & OBJECT_KV_END_DEFINED) {
-		return FX_RESULT_ERR(NO_MEMORY);
+		return FX_RESULT_ERR(BAD_FORMAT);
 	}
 
 	fx_hashtable *new_table = fx_hashtable_create();
@@ -2246,9 +2201,7 @@ static fx_result parse_array_header(
 		return FX_RESULT_ERR(NO_MEMORY);
 	}
 
-#if 0
+	fx_array_push_back(array, FX_VALUE_OBJECT(new_table));
-	fx_array_append(array, FX_RV(new_table));
-#endif
 
 	advance_token(ctx);
 	*new_container = new_table;
@@ -2330,7 +2283,7 @@ static fx_result parse_root(struct ctx *ctx, fx_hashtable **out)
 static fx_result toml_deserialise(
 	fx_serial_ctx *serial,
 	fx_stream *src,
-	fx_object **dest,
+	fx_value *dest,
 	enum fx_serial_flags flags)
 {
 	struct ctx ctx = {0};
@@ -2351,7 +2304,7 @@ static fx_result toml_deserialise(
 	}
 
 	if (ctx.ctx_flags & CTX_EOF) {
-		*dest = (fx_hashtable_create());
+		*dest = FX_VALUE_OBJECT(fx_hashtable_create());
 		return FX_RESULT_SUCCESS;
 	}
 
@@ -2361,7 +2314,7 @@ static fx_result toml_deserialise(
 		return fx_result_propagate(ctx.ctx_result);
 	}
 
-	*dest = (data);
+	*dest = FX_VALUE_OBJECT(data);
 #if 0
 	ctx.ctx_flags
 		= CTX_ENABLE_NUMBERS | CTX_ENABLE_TIMESTAMPS | CTX_ENABLE_BOOLS;

fx/datetime.c

@@ -1,4 +1,4 @@
-#include <fx/collections/datetime.h>
+#include <fx/datetime.h>
 #include <fx/stream.h>
 #include <fx/string.h>
 #include <fx/value.h>
@@ -339,7 +339,7 @@ static enum fx_status encode_rfc3339(
 			dt->dt_sec);
 
 		if (dt->dt_msec > 0) {
-			fx_stream_write_fmt(out, NULL, ".%04ld", dt->dt_msec);
+			fx_stream_write_fmt(out, NULL, ".%03ld", dt->dt_msec);
 		}
 
 		if (!dt->dt_localtime) {
@@ -572,9 +572,8 @@ static fx_status _datetime_to_string(
 	fx_stream *out,
 	const char *format)
 {
-	struct fx_datetime_p *dt = fx_object_get_private(
+	struct fx_datetime_p *dt
-		obj->v_object,
+		= fx_object_get_private(obj->v_object, FX_TYPE_DATETIME);
-		FX_TYPE_DATETIME);
 
 	if (dt->dt_has_date) {
 		fx_stream_write_fmt(

fx/float/double.c

@@ -94,6 +94,7 @@ FX_TYPE_DEFINITION_BEGIN(fx_double)
 	FX_TYPE_EXTENDS(FX_TYPE_VALUE_TYPE);
 	FX_TYPE_IMPLEMENTS(FX_TYPE_CONVERTIBLE);
 	FX_TYPE_IMPLEMENTS(FX_TYPE_OPERABLE);
+	FX_TYPE_IMPLEMENTS(FX_TYPE_COMPARABLE);
 	FX_TYPE_NAME("fx.double");
 	FX_TYPE_CLASS(fx_double_class);
 	FX_TYPE_INSTANCE_PRIVATE(double);

fx/include/fx/iterator.h

@@ -10,15 +10,10 @@
 FX_DECLS_BEGIN;
 
 #define fx_foreach(var, iterator)                                              \
-	for (fx_value var = fx_iterator_get_value(iterator);                   \
+	for (const fx_value *var = fx_iterator_get_value(iterator);            \
 	     FX_OK(fx_iterator_get_status(iterator));                          \
 	     fx_iterator_move_next(iterator),                                  \
 	                    var = fx_iterator_get_value(iterator))
-#define fx_foreach_ptr(type, var, iterator)                                    \
-	for (type *var = (type *)fx_iterator_get_value(iterator).v_ptr;        \
-	     FX_OK(fx_iterator_get_status(iterator));                          \
-	     fx_iterator_move_next(iterator),                                  \
-	          var = (type *)fx_iterator_get_value(iterator).v_ptr)
 
 #define FX_ITERATOR_VALUE_INT(v)     ((fx_iterator_value) {.v_int = (v)})
 #define FX_ITERATOR_VALUE_PTR(v)     ((fx_iterator_value) {.v_ptr = (v)})
@@ -36,12 +31,11 @@ FX_DECLARE_TYPE(fx_iterable);
 FX_TYPE_CLASS_DECLARATION_BEGIN(fx_iterator)
 	fx_status (*it_move_next)(const fx_iterator *);
 	fx_status (*it_erase)(fx_iterator *);
-	fx_value (*it_get_value)(const fx_iterator *);
+	const fx_value *(*it_get_value)(const fx_iterator *);
 FX_TYPE_CLASS_DECLARATION_END(fx_iterator)
 
 FX_TYPE_CLASS_DECLARATION_BEGIN(fx_iterable)
-	fx_iterator *(*it_begin)(fx_iterable *);
+	const fx_iterator *(*it_begin)(const fx_iterable *);
-	const fx_iterator *(*it_cbegin)(const fx_iterable *);
 FX_TYPE_CLASS_DECLARATION_END(fx_iterable)
 
 FX_API fx_type_id fx_iterator_get_type(void);
@@ -56,15 +50,14 @@ static inline void fx_iterator_unref(const fx_iterator *p)
 	fx_object_unref((fx_object *)p);
 }
 
-FX_API fx_iterator *fx_iterator_begin(fx_iterable *it);
+FX_API const fx_iterator *fx_iterator_begin(const fx_iterable *it);
-FX_API const fx_iterator *fx_iterator_cbegin(const fx_iterable *it);
 
 FX_API fx_status fx_iterator_get_status(const fx_iterator *it);
 FX_API fx_status
 fx_iterator_set_status(const fx_iterator *it, fx_status status);
 
 FX_API fx_status fx_iterator_move_next(const fx_iterator *it);
-FX_API fx_value fx_iterator_get_value(const fx_iterator *it);
+FX_API const fx_value *fx_iterator_get_value(const fx_iterator *it);
 FX_API fx_status fx_iterator_erase(fx_iterator *it);
 static inline bool fx_iterator_is_valid(const fx_iterator *it)
 {

fx/include/fx/namemap.h

@@ -26,7 +26,10 @@ typedef struct fx_namemap_entry {
 	const char *e_name;
 } fx_namemap_entry;
 
-FX_API fx_status fx_namemap_cleanup(fx_namemap *map);
+typedef void (*fx_namemap_cleanup_callback)(fx_namemap_entry *);
+
+FX_API fx_status
+fx_namemap_cleanup(fx_namemap *map, fx_namemap_cleanup_callback callback);
 
 FX_API fx_status
 fx_namemap_put(fx_namemap *map, const char *name, fx_namemap_entry *entry);

fx/include/fx/value.h

@@ -45,6 +45,11 @@
 #define FX_WSTR(v)      __FX_VALUE_CREATE(WSTR, v_wstr, v)
 #define FX_CSTR(v)      __FX_VALUE_CREATE(CSTR, v_cstr, v)
 #define FX_POINTER(v)   __FX_VALUE_CREATE(POINTER, v_pointer, v)
+#define FX_VALUE_OBJECT_REF(v)                                                 \
+	((fx_value) {                                                          \
+		.v_type = fx_object_query_type((fx_object *)v),                \
+		.v_object = fx_object_ref((fx_object *)(v)),                   \
+	})
 #define FX_VALUE_OBJECT(v)                                                     \
 	((fx_value) {                                                          \
 		.v_type = fx_object_query_type((fx_object *)v),                \

fx/iterator.c

@@ -23,7 +23,7 @@ static enum fx_status iterator_set_status(
 
 /*** PUBLIC FUNCTIONS *********************************************************/
 
-fx_iterator *fx_iterator_begin(fx_iterable *it)
+const fx_iterator *fx_iterator_begin(const fx_iterable *it)
 {
 	FX_CLASS_DISPATCH_VIRTUAL_0(
 		fx_iterable,
@@ -33,16 +33,6 @@ fx_iterator *fx_iterator_begin(fx_iterable *it)
 		it);
 }
 
-const fx_iterator *fx_iterator_cbegin(const fx_iterable *it)
-{
-	FX_CLASS_DISPATCH_VIRTUAL_0(
-		fx_iterable,
-		FX_TYPE_ITERABLE,
-		NULL,
-		it_cbegin,
-		it);
-}
-
 enum fx_status fx_iterator_get_status(const fx_iterator *it)
 {
 	FX_CLASS_DISPATCH_STATIC_0(FX_TYPE_ITERATOR, iterator_get_status, it);
@@ -74,12 +64,12 @@ enum fx_status fx_iterator_move_next(const fx_iterator *it)
 	return status;
 }
 
-fx_value fx_iterator_get_value(const fx_iterator *it)
+const fx_value *fx_iterator_get_value(const fx_iterator *it)
 {
 	FX_CLASS_DISPATCH_VIRTUAL_0(
 		fx_iterator,
 		FX_TYPE_ITERATOR,
-		FX_VALUE_EMPTY,
+		NULL,
 		it_get_value,
 		it);
 }

fx/namemap.c

@@ -45,8 +45,50 @@ static struct map_bucket *map_item_convert_to_bucket(
 	return bucket;
 }
 
-enum fx_status fx_namemap_cleanup(struct fx_namemap *map)
+static void cleanup_bucket(
+	struct map_bucket *bucket,
+	fx_namemap_cleanup_callback callback)
 {
+	fx_queue_entry *cur = fx_queue_pop_front(&bucket->b_items);
+	while (cur) {
+		struct __fx_namemap_entry *entry
+			= fx_unbox(struct __fx_namemap_entry, cur, e_entry);
+		struct fx_namemap_entry *item
+			= (struct fx_namemap_entry *)entry;
+		if (callback) {
+			callback(item);
+		}
+
+		cur = fx_queue_pop_front(&bucket->b_items);
+	}
+
+	free(bucket);
+}
+
+enum fx_status fx_namemap_cleanup(
+	struct fx_namemap *map,
+	fx_namemap_cleanup_callback callback)
+{
+	fx_bst_node *cur_node = fx_bst_first(&map->m_entries);
+	while (cur_node) {
+		struct __fx_namemap_entry *entry
+			= fx_unbox(struct __fx_namemap_entry, cur_node, e_node);
+		fx_bst_delete(&map->m_entries, cur_node);
+
+		if (entry->e_flags == MAP_ENTRY_BUCKET) {
+			struct map_bucket *bucket = (struct map_bucket *)entry;
+			cleanup_bucket(bucket, callback);
+		} else {
+			struct fx_namemap_entry *item
+				= (struct fx_namemap_entry *)entry;
+			if (callback) {
+				callback(item);
+			}
+		}
+
+		cur_node = fx_bst_first(&map->m_entries);
+	}
+
 	return FX_SUCCESS;
 }
 
@@ -137,10 +179,8 @@ fx_namemap_entry *fx_namemap_get(const fx_namemap *map, const char *name)
 struct fx_namemap_entry *fx_namemap_first(const struct fx_namemap *map)
 {
 	struct fx_bst_node *first = fx_bst_first(&map->m_entries);
-	struct __fx_namemap_entry *entry = fx_unbox(
+	struct __fx_namemap_entry *entry
-		struct __fx_namemap_entry,
+		= fx_unbox(struct __fx_namemap_entry, first, e_node);
-		first,
-		e_node);
 	if (!entry) {
 		return NULL;
 	}
@@ -158,10 +198,8 @@ struct fx_namemap_entry *fx_namemap_first(const struct fx_namemap *map)
 struct fx_namemap_entry *fx_namemap_last(const struct fx_namemap *map)
 {
 	struct fx_bst_node *last = fx_bst_last(&map->m_entries);
-	struct __fx_namemap_entry *entry = fx_unbox(
+	struct __fx_namemap_entry *entry
-		struct __fx_namemap_entry,
+		= fx_unbox(struct __fx_namemap_entry, last, e_node);
-		last,
-		e_node);
 	if (entry->e_flags == MAP_ENTRY_ITEM) {
 		return (struct fx_namemap_entry *)entry;
 	}
@@ -179,11 +217,11 @@ struct fx_namemap_entry *fx_namemap_next(
 	struct map_bucket *bucket = entry->e_opaque.e_bucket;
 	struct __fx_namemap_entry *next_entry = NULL;
 	if (bucket) {
-		struct fx_queue_entry *q_entry = fx_queue_next(
+		struct fx_queue_entry *q_entry
-			&entry->e_opaque.e_entry);
+			= fx_queue_next(&entry->e_opaque.e_entry);
 		if (!q_entry) {
-			struct fx_bst_node *node = fx_bst_next(
+			struct fx_bst_node *node
-				&bucket->b_entry.e_node);
+				= fx_bst_next(&bucket->b_entry.e_node);
 			next_entry = fx_unbox(
 				struct __fx_namemap_entry,
 				node,
@@ -205,12 +243,10 @@ struct fx_namemap_entry *fx_namemap_next(
 
 	if (next_entry->e_flags == MAP_ENTRY_BUCKET) {
 		bucket = (struct map_bucket *)next_entry;
-		struct fx_queue_entry *q_entry = fx_queue_first(
+		struct fx_queue_entry *q_entry
-			&bucket->b_items);
+			= fx_queue_first(&bucket->b_items);
-		next_entry = fx_unbox(
+		next_entry
-			struct __fx_namemap_entry,
+			= fx_unbox(struct __fx_namemap_entry, q_entry, e_entry);
-			q_entry,
-			e_entry);
 	}
 
 	return (struct fx_namemap_entry *)next_entry;
@@ -223,11 +259,11 @@ struct fx_namemap_entry *fx_namemap_prev(
 	struct map_bucket *bucket = entry->e_opaque.e_bucket;
 	struct __fx_namemap_entry *prev_entry = NULL;
 	if (bucket) {
-		struct fx_queue_entry *q_entry = fx_queue_prev(
+		struct fx_queue_entry *q_entry
-			&entry->e_opaque.e_entry);
+			= fx_queue_prev(&entry->e_opaque.e_entry);
 		if (!q_entry) {
-			struct fx_bst_node *node = fx_bst_prev(
+			struct fx_bst_node *node
-				&bucket->b_entry.e_node);
+				= fx_bst_prev(&bucket->b_entry.e_node);
 			prev_entry = fx_unbox(
 				struct __fx_namemap_entry,
 				node,
@@ -249,12 +285,10 @@ struct fx_namemap_entry *fx_namemap_prev(
 
 	if (prev_entry->e_flags == MAP_ENTRY_BUCKET) {
 		bucket = (struct map_bucket *)prev_entry;
-		struct fx_queue_entry *q_entry = fx_queue_last(
+		struct fx_queue_entry *q_entry
-			&bucket->b_items);
+			= fx_queue_last(&bucket->b_items);
-		prev_entry = fx_unbox(
+		prev_entry
-			struct __fx_namemap_entry,
+			= fx_unbox(struct __fx_namemap_entry, q_entry, e_entry);
-			q_entry,
-			e_entry);
 	}
 
 	return (struct fx_namemap_entry *)prev_entry;

fx/object.c

@@ -41,16 +41,14 @@ fx_result fx_object_instantiate(
 	out->obj_type = type;
 	out->obj_ref = 1;
 
-	struct fx_queue_entry *entry = fx_queue_first(
+	struct fx_queue_entry *entry
-		&type->ty_class_hierarchy);
+		= fx_queue_first(&type->ty_class_hierarchy);
 	while (entry) {
-		struct fx_type_component *comp = fx_unbox(
+		struct fx_type_component *comp
-			struct fx_type_component,
+			= fx_unbox(struct fx_type_component, entry, c_entry);
-			entry,
-			c_entry);
 		const struct fx_type_info *class_info = comp->c_type;
-		void *private_data = (char *)out
+		void *private_data
-		                   + comp->c_instance_private_data_offset;
+			= (char *)out + comp->c_instance_private_data_offset;
 
 		if (class_info->ty_instance_init) {
 			class_info->ty_instance_init(out, private_data);
@@ -90,7 +88,7 @@ fx_status fx_object_to_string(
 	fx_stream *out,
 	const char *format)
 {
-	fx_value value = FX_VALUE_OBJECT(p);
+	fx_value value = FX_VALUE_OBJECT_REF(p);
 	fx_object_class *iface = fx_object_get_interface(p, FX_TYPE_OBJECT);
 	if (iface && iface->to_string) {
 		return iface->to_string(&value, out, format);
@@ -102,13 +100,16 @@ fx_status fx_object_to_string(
 
 bool fx_object_is_type(const struct _fx_object *p, fx_type_id type)
 {
+	if (!p) {
+		return false;
+	}
+
 	if (fx_type_id_compare(&p->obj_type->ty_id, type) == 0) {
 		return true;
 	}
 
-	struct fx_type_component *comp = fx_type_get_component(
+	struct fx_type_component *comp
-		&p->obj_type->ty_components,
+		= fx_type_get_component(&p->obj_type->ty_components, type);
-		type);
 
 	return comp != NULL;
 }
@@ -125,9 +126,8 @@ void *fx_object_get_private(const struct _fx_object *object, fx_type_id type)
 		return (char *)object + object->obj_main_priv_offset;
 	}
 
-	struct fx_type_component *comp = fx_type_get_component(
+	struct fx_type_component *comp
-		&object->obj_type->ty_components,
+		= fx_type_get_component(&object->obj_type->ty_components, type);
-		type);
 	if (!comp) {
 		return NULL;
 	}
@@ -143,9 +143,8 @@ void *fx_object_get_protected(const struct _fx_object *object, fx_type_id type)
 
 	assert(object->obj_magic == FX_OBJECT_MAGIC);
 
-	struct fx_type_component *comp = fx_type_get_component(
+	struct fx_type_component *comp
-		&object->obj_type->ty_components,
+		= fx_type_get_component(&object->obj_type->ty_components, type);
-		type);
 	if (!comp) {
 		return NULL;
 	}
@@ -177,9 +176,8 @@ enum fx_status fx_object_get_data(
 
 	assert(object->obj_magic == FX_OBJECT_MAGIC);
 
-	struct fx_type_component *comp = fx_type_get_component(
+	struct fx_type_component *comp
-		&object->obj_type->ty_components,
+		= fx_type_get_component(&object->obj_type->ty_components, type);
-		type);
 	if (!comp) {
 		return FX_ERR_INVALID_ARGUMENT;
 	}
@@ -218,14 +216,12 @@ void fx_object_unref(struct _fx_object *p)
 
 	struct fx_queue_entry *cur = fx_queue_last(&type->ty_class_hierarchy);
 	while (cur) {
-		struct fx_type_component *comp = fx_unbox(
+		struct fx_type_component *comp
-			struct fx_type_component,
+			= fx_unbox(struct fx_type_component, cur, c_entry);
-			cur,
-			c_entry);
 
 		const struct fx_type_info *class_info = comp->c_type;
-		void *private_data = (char *)p
+		void *private_data
-		                   + comp->c_instance_private_data_offset;
+			= (char *)p + comp->c_instance_private_data_offset;
 
 		if (class_info->ty_instance_fini) {
 			class_info->ty_instance_fini(p, private_data);

fx/pointer.c

@@ -1,17 +1,51 @@
+#include <fx/comparable.h>
 #include <fx/pointer.h>
 #include <fx/value-type.h>
+#include <fx/value.h>
+
+static fx_status hash(const fx_value *v, uint64_t *out_hash)
+{
+	*out_hash = (uint64_t)v->v_pointer;
+	return FX_SUCCESS;
+}
+
+static i32 compare(const fx_value *left, const fx_value *right)
+{
+	void *left_v = left->v_pointer;
+	void *right_v = 0;
+	if (!FX_OK(fx_value_get_pointer(right, &right_v))) {
+		return -1;
+	}
+
+	uintptr_t left_p = (uintptr_t)left_v;
+	uintptr_t right_p = (uintptr_t)right_v;
+
+	if (left_p < right_p) {
+		return -1;
+	} else if (left_p > right_p) {
+		return 1;
+	} else {
+		return 0;
+	}
+}
 
 /*** CLASS DEFINITION *********************************************************/
 
 FX_TYPE_CLASS_BEGIN(fx_pointer)
 	FX_TYPE_VTABLE_INTERFACE_BEGIN(fx_object, FX_TYPE_OBJECT)
 		FX_INTERFACE_ENTRY(to_string) = NULL;
+		FX_INTERFACE_ENTRY(hash) = hash;
 	FX_TYPE_VTABLE_INTERFACE_END(fx_object, FX_TYPE_OBJECT)
+
+	FX_TYPE_VTABLE_INTERFACE_BEGIN(fx_comparable, FX_TYPE_COMPARABLE)
+		FX_INTERFACE_ENTRY(c_compare) = compare;
+	FX_TYPE_VTABLE_INTERFACE_END(fx_comparable, FX_TYPE_COMPARABLE)
 FX_TYPE_CLASS_END(fx_pointer)
 
 FX_TYPE_DEFINITION_BEGIN(fx_pointer)
 	__FX_VALUE_TYPE_ID(POINTER);
 	FX_TYPE_EXTENDS(FX_TYPE_VALUE_TYPE);
+	FX_TYPE_IMPLEMENTS(FX_TYPE_COMPARABLE);
 	FX_TYPE_NAME("fx.pointer");
 	FX_TYPE_CLASS(fx_pointer_class);
 	FX_TYPE_INSTANCE_PRIVATE(void *);

fx/printf.c

@@ -101,7 +101,7 @@
 // Default precision for the floating point conversion specifiers (the C
 // standard sets this at 6)
 #ifndef PRINTF_DEFAULT_FLOAT_PRECISION
-#define PRINTF_DEFAULT_FLOAT_PRECISION 6
+#define PRINTF_DEFAULT_FLOAT_PRECISION 13
 #endif
 
 // Default choice of type to use for internal floating-point computations
@@ -623,8 +623,8 @@ static void print_integer(
 	} else {
 		do {
 			const char digit = (char)(value % base);
-			buf[len++] = (char)(digit < 10
+			buf[len++]
-			                            ? '0' + digit
+				= (char)(digit < 10 ? '0' + digit
 			                            : (flags & FLAGS_UPPERCASE
 			                                       ? 'A'
 			                                       : 'a')
@@ -698,15 +698,14 @@ static struct floating_point_components get_components(
 	number_.is_negative = get_sign_bit(number);
 	floating_point_t abs_number = (number_.is_negative) ? -number : number;
 	number_.integral = (int_fast64_t)abs_number;
-	floating_point_t scaled_remainder = (abs_number
+	floating_point_t scaled_remainder
-	                                     - (floating_point_t)
+		= (abs_number - (floating_point_t)number_.integral)
-	                                               number_.integral)
 	        * powers_of_10[precision];
 	number_.fractional = (int_fast64_t)
 		scaled_remainder;   // for precision == 0U, this will be 0
 
-	floating_point_t remainder = scaled_remainder
+	floating_point_t remainder
-	                           - (floating_point_t)number_.fractional;
+		= scaled_remainder - (floating_point_t)number_.fractional;
 	const floating_point_t one_half = (floating_point_t)0.5;
 
 	if (remainder > one_half) {
@@ -779,18 +778,18 @@ static struct scaling_factor update_normalization(
 		result.raw_factor = sf.raw_factor * extra_multiplicative_factor;
 	} else {
 		int factor_exp2 = get_exp2(get_bit_access(sf.raw_factor));
-		int extra_factor_exp2 = get_exp2(
+		int extra_factor_exp2
-			get_bit_access(extra_multiplicative_factor));
+			= get_exp2(get_bit_access(extra_multiplicative_factor));
 
 		// Divide the larger-exponent raw raw_factor by the smaller
 		if (PRINTF_ABS(factor_exp2) > PRINTF_ABS(extra_factor_exp2)) {
 			result.multiply = false;
-			result.raw_factor = sf.raw_factor
+			result.raw_factor
-			                  / extra_multiplicative_factor;
+				= sf.raw_factor / extra_multiplicative_factor;
 		} else {
 			result.multiply = true;
-			result.raw_factor = extra_multiplicative_factor
+			result.raw_factor
-			                  / sf.raw_factor;
+				= extra_multiplicative_factor / sf.raw_factor;
 		}
 	}
 	return result;
@@ -818,25 +817,24 @@ static struct floating_point_components get_normalized_components(
 		return get_components(negative ? -scaled : scaled, precision);
 	}
 	components.integral = (int_fast64_t)scaled;
-	floating_point_t remainder = non_normalized
+	floating_point_t remainder
+		= non_normalized
 	        - unapply_scaling(
-					     (floating_point_t)
+			  (floating_point_t)components.integral,
-						     components.integral,
 			  normalization);
 	floating_point_t prec_power_of_10 = powers_of_10[precision];
-	struct scaling_factor account_for_precision = update_normalization(
+	struct scaling_factor account_for_precision
-		normalization,
+		= update_normalization(normalization, prec_power_of_10);
-		prec_power_of_10);
+	floating_point_t scaled_remainder
-	floating_point_t scaled_remainder = apply_scaling(
+		= apply_scaling(remainder, account_for_precision);
-		remainder,
-		account_for_precision);
 	floating_point_t rounding_threshold = 0.5;
 
 	components.fractional = (int_fast64_t)
 		scaled_remainder;   // when precision == 0, the assigned value
 	                            // should be 0
-	scaled_remainder -= (floating_point_t)components
+	scaled_remainder
-	                            .fractional;   // when precision == 0, this
+		-= (floating_point_t)
+	                   components.fractional;   // when precision == 0, this
 	                                            // will not change
 	                                            // scaled_remainder
 
@@ -960,9 +958,8 @@ static void print_decimal_number(
 	char *buf,
 	printf_size_t len)
 {
-	struct floating_point_components value_ = get_components(
+	struct floating_point_components value_
-		number,
+		= get_components(number, precision);
-		precision);
 	print_broken_up_decimal(
 		value_,
 		output,
@@ -1105,9 +1102,9 @@ static void print_exponential_number(
 		abs_exp10_covered_by_powers_table
 			= PRINTF_ABS(floored_exp10)
 		        < PRINTF_MAX_PRECOMPUTED_POWER_OF_10;
-		normalization.raw_factor = abs_exp10_covered_by_powers_table
+		normalization.raw_factor
-		                                 ? powers_of_10[PRINTF_ABS(
+			= abs_exp10_covered_by_powers_table
-							   floored_exp10)]
+		                ? powers_of_10[PRINTF_ABS(floored_exp10)]
 		                : p10;
 	}
 
@@ -1120,9 +1117,8 @@ static void print_exponential_number(
 
 	bool fall_back_to_decimal_only_mode = false;
 	if (flags & FLAGS_ADAPT_EXP) {
-		int required_significant_digits = (precision == 0)
+		int required_significant_digits
-		                                        ? 1
+			= (precision == 0) ? 1 : (int)precision;
-		                                        : (int)precision;
 		// Should we want to fall-back to "%f" mode, and only print the
 		// decimal part?
 		fall_back_to_decimal_only_mode
@@ -1133,10 +1129,10 @@ static void print_exponential_number(
 		// "%g" mode, "precision" is the number of _significant digits_,
 		// and this is when we "translate" the precision value to an
 		// actual number of decimal digits.
-		int precision_ = fall_back_to_decimal_only_mode
+		int precision_
+			= fall_back_to_decimal_only_mode
 		                ? (int)precision - 1 - floored_exp10
-		                       : (int)precision
+		                : (int)precision - 1;   // the presence of the
-		                                 - 1;   // the presence of the
 		                                        // exponent ensures only
 		                                        // one significant digit
 		                                        // comes before the
@@ -1573,9 +1569,8 @@ static inline void format_string_loop(
 
 				if (flags & FLAGS_LONG_LONG) {
 #if PRINTF_SUPPORT_LONG_LONG
-					const long long value = va_arg(
+					const long long value
-						args,
+						= va_arg(args, long long);
-						long long);
 					print_integer(
 						output,
 						ABS_FOR_PRINTING(value),

fx/string.c

@@ -68,6 +68,7 @@ struct fx_string_iterator_p {
 	const char *string_value;
 	size_t string_length;
 	size_t string_codepoints;
+	fx_value value;
 };
 
 /*** PRIVATE FUNCTIONS ********************************************************/
@@ -293,9 +294,8 @@ static fx_string *string_duplicate(const struct fx_string_p *str)
 		return NULL;
 	}
 
-	struct fx_string_p *new_str_p = fx_object_get_private(
+	struct fx_string_p *new_str_p
-		new_str,
+		= fx_object_get_private(new_str, FX_TYPE_STRING);
-		FX_TYPE_STRING);
 
 	string_change_capacity(new_str_p, str->s_len);
 	const char *src = string_ptr(str);
@@ -397,9 +397,8 @@ static enum fx_status replace_utf8(
 	}
 
 	size_t new_data_nr_bytes = strlen(new_data);
-	size_t new_data_nr_codepoints = fx_wchar_utf8_codepoint_count(
+	size_t new_data_nr_codepoints
-		new_data,
+		= fx_wchar_utf8_codepoint_count(new_data, new_data_nr_bytes);
-		new_data_nr_bytes);
 	if (new_data_nr_codepoints == 0) {
 		/* new_data is not a valid utf-8 string */
 		return FX_ERR_INVALID_ARGUMENT;
@@ -417,8 +416,8 @@ static enum fx_status replace_utf8(
 		return status;
 	}
 
-	size_t new_total_bytes = str->s_len - old_data_nr_bytes
+	size_t new_total_bytes
-	                       + new_data_nr_bytes;
+		= str->s_len - old_data_nr_bytes + new_data_nr_bytes;
 	if (new_total_bytes > str->s_max) {
 		status = string_reserve(str, new_total_bytes);
 	}
@@ -747,9 +746,8 @@ static enum fx_status string_insert_wstr_ansi(
 		at = dest->s_len;
 	}
 
-	size_t utf8_encoded_size = fx_wchar_utf8_string_encoded_size(
+	size_t utf8_encoded_size
-		src,
+		= fx_wchar_utf8_string_encoded_size(src, nr_codepoints);
-		nr_codepoints);
 	if (utf8_encoded_size == 0) {
 		return FX_ERR_INVALID_ARGUMENT;
 	}
@@ -796,9 +794,8 @@ static enum fx_status string_insert_wstr_utf8(
 		codepoint_offset = dest->s_codepoints;
 	}
 
-	size_t utf8_encoded_size = fx_wchar_utf8_string_encoded_size(
+	size_t utf8_encoded_size
-		src,
+		= fx_wchar_utf8_string_encoded_size(src, nr_codepoints);
-		nr_codepoints);
 	if (utf8_encoded_size == 0) {
 		return FX_ERR_INVALID_ARGUMENT;
 	}
@@ -1041,9 +1038,8 @@ static fx_iterator *string_tokenise(
 	}
 
 	fx_string_iterator *it_obj = fx_object_create(FX_TYPE_STRING_ITERATOR);
-	struct fx_string_iterator_p *it = fx_object_get_private(
+	struct fx_string_iterator_p *it
-		it_obj,
+		= fx_object_get_private(it_obj, FX_TYPE_STRING_ITERATOR);
-		FX_TYPE_STRING_ITERATOR);
 
 	it->_m = ITERATOR_MODE_TOKENS;
 	it->_d = delims;
@@ -1152,9 +1148,8 @@ static fx_string *string_substr(
 	}
 
 	fx_string *newstr = fx_string_create();
-	struct fx_string_p *newstr_p = fx_object_get_private(
+	struct fx_string_p *newstr_p
-		newstr,
+		= fx_object_get_private(newstr, FX_TYPE_STRING);
-		FX_TYPE_STRING);
 	string_reserve(newstr_p, len);
 
 	const char *src = string_ptr(str) + start;
@@ -1304,12 +1299,10 @@ enum fx_status fx_string_insert_s(
 	const fx_string *src,
 	size_t at)
 {
-	struct fx_string_p *dest_p = fx_object_get_private(
+	struct fx_string_p *dest_p
-		dest,
+		= fx_object_get_private(dest, FX_TYPE_STRING);
-		FX_TYPE_STRING);
+	const struct fx_string_p *src_p
-	const struct fx_string_p *src_p = fx_object_get_private(
+		= fx_object_get_private(src, FX_TYPE_STRING);
-		src,
-		FX_TYPE_STRING);
 	return string_insert_s(dest_p, src_p, at);
 }
 
@@ -1318,9 +1311,8 @@ enum fx_status fx_string_insert_cstr(
 	const char *src,
 	size_t at)
 {
-	struct fx_string_p *dest_p = fx_object_get_private(
+	struct fx_string_p *dest_p
-		dest,
+		= fx_object_get_private(dest, FX_TYPE_STRING);
-		FX_TYPE_STRING);
 	return string_insert_cstr(dest_p, src, strlen(src), at);
 }
 
@@ -1329,9 +1321,8 @@ enum fx_status fx_string_insert_wstr(
 	const fx_wchar *src,
 	size_t at)
 {
-	struct fx_string_p *dest_p = fx_object_get_private(
+	struct fx_string_p *dest_p
-		dest,
+		= fx_object_get_private(dest, FX_TYPE_STRING);
-		FX_TYPE_STRING);
 	return string_insert_wstr(dest_p, src, fx_wstrlen(src), at);
 }
 
@@ -1341,9 +1332,8 @@ enum fx_status fx_string_insert_cstrf(
 	const char *format,
 	...)
 {
-	struct fx_string_p *dest_p = fx_object_get_private(
+	struct fx_string_p *dest_p
-		dest,
+		= fx_object_get_private(dest, FX_TYPE_STRING);
-		FX_TYPE_STRING);
 
 	va_list arg;
 	va_start(arg, format);
@@ -1370,9 +1360,8 @@ enum fx_status fx_string_insert_cstrn(
 
 enum fx_status fx_string_append_cstrf(fx_string *dest, const char *format, ...)
 {
-	struct fx_string_p *dest_p = fx_object_get_private(
+	struct fx_string_p *dest_p
-		dest,
+		= fx_object_get_private(dest, FX_TYPE_STRING);
-		FX_TYPE_STRING);
 
 	va_list arg;
 	va_start(arg, format);
@@ -1384,9 +1373,8 @@ enum fx_status fx_string_append_cstrf(fx_string *dest, const char *format, ...)
 
 enum fx_status fx_string_prepend_cstrf(fx_string *dest, const char *format, ...)
 {
-	struct fx_string_p *dest_p = fx_object_get_private(
+	struct fx_string_p *dest_p
-		dest,
+		= fx_object_get_private(dest, FX_TYPE_STRING);
-		FX_TYPE_STRING);
 
 	va_list arg;
 	va_start(arg, format);
@@ -1539,9 +1527,8 @@ static fx_status string_to_string(
 	fx_stream *out,
 	const char *format)
 {
-	struct fx_string_p *str = fx_object_get_private(
+	struct fx_string_p *str
-		obj->v_object,
+		= fx_object_get_private(obj->v_object, FX_TYPE_STRING);
-		FX_TYPE_STRING);
 	const char *s = string_ptr(str);
 	for (size_t i = 0; i < str->s_len; i++) {
 		fx_stream_write_char(out, s[i]);
@@ -1552,9 +1539,8 @@ static fx_status string_to_string(
 
 static fx_status string_hash(const fx_value *v, uint64_t *out_hash)
 {
-	struct fx_string_p *str = fx_object_get_private(
+	struct fx_string_p *str
-		v->v_object,
+		= fx_object_get_private(v->v_object, FX_TYPE_STRING);
-		FX_TYPE_STRING);
 	const char *s = string_ptr(str);
 	*out_hash = fx_hash_cstr(s);
 	return FX_SUCCESS;
@@ -1570,7 +1556,9 @@ static i32 compare(const fx_value *left, const fx_value *right)
 		return -1;
 	}
 
-	return strcmp(left_cstr, right_cstr);
+	int result = strcmp(left_cstr, right_cstr);
+
+	return result;
 }
 
 static fx_status get_length(
@@ -1588,9 +1576,8 @@ static fx_status get_length(
 
 static void iterator_fini(fx_iterator *obj)
 {
-	struct fx_string_iterator_p *it = fx_object_get_private(
+	struct fx_string_iterator_p *it
-		obj,
+		= fx_object_get_private(obj, FX_TYPE_STRING_ITERATOR);
-		FX_TYPE_STRING_ITERATOR);
 	if (it->_tmp) {
 		fx_string_unref(it->_tmp);
 	}
@@ -1598,12 +1585,11 @@ static void iterator_fini(fx_iterator *obj)
 	memset(it, 0x0, sizeof *it);
 }
 
-static fx_iterator *iterator_begin(fx_object *obj)
+static const fx_iterator *iterator_begin(const fx_object *obj)
 {
 	fx_string_iterator *it_obj = fx_object_create(FX_TYPE_STRING_ITERATOR);
-	struct fx_string_iterator_p *it = fx_object_get_private(
+	struct fx_string_iterator_p *it
-		it_obj,
+		= fx_object_get_private(it_obj, FX_TYPE_STRING_ITERATOR);
-		FX_TYPE_STRING_ITERATOR);
 	struct fx_string_p *p = fx_object_get_private(obj, FX_TYPE_STRING);
 
 	if (!p->s_len) {
@@ -1623,11 +1609,6 @@ static fx_iterator *iterator_begin(fx_object *obj)
 	return it_obj;
 }
 
-static const fx_iterator *iterator_cbegin(const fx_object *obj)
-{
-	return iterator_begin((fx_object *)obj);
-}
-
 static enum fx_status chars_iterator_move_next(struct fx_string_iterator_p *it)
 {
 	if (!it->_s_p) {
@@ -1676,9 +1657,8 @@ static enum fx_status tokens_iterator_move_next(struct fx_string_iterator_p *it)
 
 static enum fx_status iterator_move_next(const fx_iterator *obj)
 {
-	struct fx_string_iterator_p *it = fx_object_get_private(
+	struct fx_string_iterator_p *it
-		obj,
+		= fx_object_get_private(obj, FX_TYPE_STRING_ITERATOR);
-		FX_TYPE_STRING_ITERATOR);
 
 	switch (it->_m) {
 	case ITERATOR_MODE_CHARS:
@@ -1690,21 +1670,22 @@ static enum fx_status iterator_move_next(const fx_iterator *obj)
 	}
 }
 
-static fx_value chars_iterator_get_value(struct fx_string_iterator_p *it)
+static fx_value *chars_iterator_get_value(struct fx_string_iterator_p *it)
 {
-	return FX_U32(it->char_value);
+	it->value = FX_WCHAR(it->char_value);
+	return &it->value;
 }
 
-static fx_value tokens_iterator_get_value(struct fx_string_iterator_p *it)
+static fx_value *tokens_iterator_get_value(struct fx_string_iterator_p *it)
 {
-	return FX_CSTR(it->string_value);
+	it->value = FX_CSTR(it->string_value);
+	return &it->value;
 }
 
-static fx_value iterator_get_value(const fx_iterator *obj)
+static const fx_value *iterator_get_value(const fx_iterator *obj)
 {
-	struct fx_string_iterator_p *it = fx_object_get_private(
+	struct fx_string_iterator_p *it
-		obj,
+		= fx_object_get_private(obj, FX_TYPE_STRING_ITERATOR);
-		FX_TYPE_STRING_ITERATOR);
 
 	switch (it->_m) {
 	case ITERATOR_MODE_CHARS:
@@ -1712,7 +1693,7 @@ static fx_value iterator_get_value(const fx_iterator *obj)
 	case ITERATOR_MODE_TOKENS:
 		return tokens_iterator_get_value(it);
 	default:
-		return FX_VALUE_EMPTY;
+		return NULL;
 	}
 }
 
@@ -1720,8 +1701,8 @@ static fx_status add(const fx_value *l, const fx_value *r, fx_value *out)
 {
 	fx_string *left = l->v_object;
 	fx_string *right = r->v_object;
-	fx_string *result = fx_string_create_from_cstr(
+	fx_string *result
-		fx_string_get_cstr(left));
+		= fx_string_create_from_cstr(fx_string_get_cstr(left));
 	if (!result) {
 		return FX_ERR_NO_MEMORY;
 	}
@@ -1775,7 +1756,6 @@ FX_TYPE_CLASS_BEGIN(fx_string)
 
 	FX_TYPE_VTABLE_INTERFACE_BEGIN(fx_iterable, FX_TYPE_ITERABLE)
 		FX_INTERFACE_ENTRY(it_begin) = iterator_begin;
-		FX_INTERFACE_ENTRY(it_cbegin) = iterator_cbegin;
 	FX_TYPE_VTABLE_INTERFACE_END(fx_iterable, FX_TYPE_ITERABLE)
 
 	FX_TYPE_VTABLE_INTERFACE_BEGIN(fx_operable, FX_TYPE_OPERABLE)

fx/test/unicode-strings.c

@@ -20,7 +20,7 @@ int main(void)
 	fx_foreach(val, it)
 	{
 		const char *tok = NULL;
-		fx_value_get_cstr(&val, &tok);
+		fx_value_get_cstr(val, &tok);
 		printf("%s\n", tok);
 	}
 	fx_iterator_unref(it);

fx/value.c

@@ -126,9 +126,8 @@ int fx_value_compare(const fx_value *left, const fx_value *right)
 		return FX_ERR_NOT_SUPPORTED;
 	}
 
-	fx_comparable_class *comparable = fx_class_get_interface(
+	fx_comparable_class *comparable
-		c,
+		= fx_class_get_interface(c, FX_TYPE_COMPARABLE);
-		FX_TYPE_COMPARABLE);
 	if (!comparable || !comparable->c_compare) {
 		return FX_ERR_NOT_SUPPORTED;
 	}
@@ -181,8 +180,8 @@ static fx_status value_change_string(fx_value *in, fx_value *out)
 		return status;
 	}
 
-	fx_string *result = fx_string_create_from_cstr(
+	fx_string *result
-		fx_stringstream_ptr(strm));
+		= fx_string_create_from_cstr(fx_stringstream_ptr(strm));
 	fx_stringstream_unref(strm);
 
 	if (!result) {
@@ -212,9 +211,8 @@ fx_status fx_value_change_type(
 		return FX_ERR_NOT_SUPPORTED;
 	}
 
-	fx_convertible_class *convertible = fx_class_get_interface(
+	fx_convertible_class *convertible
-		c,
+		= fx_class_get_interface(c, FX_TYPE_CONVERTIBLE);
-		FX_TYPE_CONVERTIBLE);
 	if (!convertible) {
 		return FX_ERR_NOT_SUPPORTED;
 	}
@@ -375,17 +373,15 @@ fx_status fx_value_change_type(
 			return FX_ERR_NOT_SUPPORTED;                           \
 		}                                                              \
                                                                                \
-		fx_convertible_class *convertible = fx_class_get_interface(    \
+		fx_convertible_class *convertible                              \
-			c,                                                     \
+			= fx_class_get_interface(c, FX_TYPE_CONVERTIBLE);      \
-			FX_TYPE_CONVERTIBLE);                                  \
+		if (!convertible || !convertible->c_to_##fx_type_name) {       \
-		if (!convertible) {                                            \
 			return FX_ERR_NOT_SUPPORTED;                           \
 		}                                                              \
                                                                                \
 		c_type_name result;                                            \
-		fx_status status = convertible->c_to_##fx_type_name(           \
+		fx_status status                                               \
-			v,                                                     \
+			= convertible->c_to_##fx_type_name(v, &result);        \
-			&result);                                              \
 		if (!FX_OK(status)) {                                          \
 			return status;                                         \
 		}                                                              \
@@ -657,9 +653,8 @@ FX_API fx_type_id fx_value_get_common_type(const fx_value *a, const fx_value *b)
 			return FX_ERR_NOT_SUPPORTED;                           \
 		}                                                              \
                                                                                \
-		fx_operable_class *operable = fx_class_get_interface(          \
+		fx_operable_class *operable                                    \
-			c,                                                     \
+			= fx_class_get_interface(c, FX_TYPE_OPERABLE);         \
-			FX_TYPE_OPERABLE);                                     \
 		if (!operable || !operable->op_##name) {                       \
 			return FX_ERR_NOT_SUPPORTED;                           \
 		}                                                              \
@@ -674,9 +669,8 @@ FX_API fx_type_id fx_value_get_common_type(const fx_value *a, const fx_value *b)
 			return FX_ERR_NOT_SUPPORTED;                           \
 		}                                                              \
                                                                                \
-		fx_operable_class *operable = fx_class_get_interface(          \
+		fx_operable_class *operable                                    \
-			c,                                                     \
+			= fx_class_get_interface(c, FX_TYPE_OPERABLE);         \
-			FX_TYPE_OPERABLE);                                     \
 		if (!operable || !operable->op_##name) {                       \
 			return FX_ERR_NOT_SUPPORTED;                           \
 		}                                                              \
@@ -695,9 +689,8 @@ FX_API fx_type_id fx_value_get_common_type(const fx_value *a, const fx_value *b)
 			return FX_ERR_NOT_SUPPORTED;                           \
 		}                                                              \
                                                                                \
-		fx_operable_class *operable = fx_class_get_interface(          \
+		fx_operable_class *operable                                    \
-			c,                                                     \
+			= fx_class_get_interface(c, FX_TYPE_OPERABLE);         \
-			FX_TYPE_OPERABLE);                                     \
 		if (!operable || !operable->op_##name) {                       \
 			return FX_ERR_NOT_SUPPORTED;                           \
 		}                                                              \