fix decimal context leak
[awesomized/ext-ion] / ion_private.h
index b349ead9156c148d1f72b4d6d46d7df5f68615c7..e34a78e0e03d85a031e91255eaae1985f5918421 100644 (file)
 #include "php.h"
 #include "ext/date/php_date.h"
 
-typedef struct php_ion_global_serializer php_ion_global_serializer;
-typedef struct php_ion_global_unserializer php_ion_global_unserializer;
+typedef struct php_ion_serializer {
+       ION_WRITER *writer;
+       ION_WRITER_OPTIONS *options;
+       smart_str *buffer;
+
+       zend_string *call_custom;
+       zend_bool call_magic;
+
+       uint32_t level;
+       HashTable *ids;
+       HashTable *tmp;
+} php_ion_serializer;
+
+typedef struct php_ion_annotaions {
+       uint8_t backref:1;
+       uint8_t makeref:1;
+       uint8_t object_prop:1;
+       uint8_t object_type;
+       zend_string *object_class;
+       zend_string *property_class;
+} php_ion_annotations;
+
+typedef struct php_ion_unserializer {
+       ION_READER *reader;
+       ION_READER_OPTIONS *options;
+       ION_TYPE type;
+
+       zend_string *call_custom;
+       zend_bool call_magic;
+
+       uint32_t level;
+       HashTable *ids;
+       HashTable *tmp;
+       HashTable *addref;
+
+       php_ion_annotations annotations;
+} php_ion_unserializer;
 
 ZEND_BEGIN_MODULE_GLOBALS(ion)
 
-       struct php_ion_global_serializer {
-               HashTable ids;
-               HashTable tmp;
-               uint64_t level;
-       } serializer;
+       php_ion_serializer serializer;
+       php_ion_unserializer unserializer;
 
-       struct php_ion_global_unserializer {
-               HashTable ids;
-               HashTable tmp;
-               HashTable addref;
-               uint64_t level;
-       } unserializer;
+       struct {
+               HashTable serializer[2];
+               HashTable unserializer[3];
+       } _ht;
 
 ZEND_END_MODULE_GLOBALS(ion);
 
@@ -45,39 +75,43 @@ ZEND_DECLARE_MODULE_GLOBALS(ion);
 
 static inline void php_ion_globals_serializer_init(void)
 {
-       php_ion_global_serializer *s = &php_ion_globals.serializer;
+       php_ion_serializer *s = &php_ion_globals.serializer;
+       HashTable *h = php_ion_globals._ht.serializer;
 
-       zend_hash_init(&s->tmp, 0, NULL, ZVAL_PTR_DTOR, 0);
-       zend_hash_init(&s->ids, 0, NULL, NULL, 0);
+       zend_hash_init(s->tmp = &h[0], 0, NULL, ZVAL_PTR_DTOR, 0);
+       zend_hash_init(s->ids = &h[1], 0, NULL, NULL, 0);
 }
 
-static inline void php_ion_globals_serializer_step(void)
+static inline uint32_t php_ion_globals_serializer_step(void)
 {
-       php_ion_global_serializer *s = &php_ion_globals.serializer;
+       php_ion_serializer *s = &php_ion_globals.serializer;
+       uint32_t level;
 
-       if (!s->level++) {
-               zend_hash_clean(&s->ids);
-               zend_hash_clean(&s->tmp);
+       if (!(level = s->level++)) {
+               zend_hash_clean(s->ids);
+               zend_hash_clean(s->tmp);
        }
+       return level;
 }
 
-static inline void php_ion_globals_serializer_exit(void)
+static inline uint32_t php_ion_globals_serializer_exit(void)
 {
-       php_ion_global_serializer *s = &php_ion_globals.serializer;
+       php_ion_serializer *s = &php_ion_globals.serializer;
 
        ZEND_ASSERT(s->level);
        if (!--s->level) {
-               zend_hash_clean(&s->ids);
-               zend_hash_clean(&s->tmp);
+               zend_hash_clean(s->ids);
+               zend_hash_clean(s->tmp);
        }
+       return s->level;
 }
 
 static inline void php_ion_globals_serializer_dtor(void)
 {
-       php_ion_global_serializer *s = &php_ion_globals.serializer;
+       php_ion_serializer *s = &php_ion_globals.serializer;
 
-       zend_hash_destroy(&s->tmp);
-       zend_hash_destroy(&s->ids);
+       zend_hash_destroy(s->tmp);
+       zend_hash_destroy(s->ids);
 }
 
 void ZVAL_ADDREF(zval *zv)
@@ -90,44 +124,44 @@ void ZVAL_ADDREF(zval *zv)
 }
 static inline void php_ion_globals_unserializer_init(void)
 {
-       php_ion_global_unserializer *s = &php_ion_globals.unserializer;
-
-       zend_hash_init(&s->tmp, 0, NULL, ZVAL_PTR_DTOR, 0);
-       zend_hash_init(&s->ids, 0, NULL, NULL, 0);
-       zend_hash_init(&s->addref, 0, NULL, ZVAL_ADDREF, 0);
+       php_ion_unserializer *s = &php_ion_globals.unserializer;
+       HashTable *h = php_ion_globals._ht.unserializer;
 
+       zend_hash_init(s->tmp = &h[0], 0, NULL, ZVAL_PTR_DTOR, 0);
+       zend_hash_init(s->ids = &h[1], 0, NULL, NULL, 0);
+       zend_hash_init(s->addref = &h[2], 0, NULL, ZVAL_ADDREF, 0);
 }
 
 static inline void php_ion_globals_unserializer_step(void)
 {
-       php_ion_global_unserializer *s = &php_ion_globals.unserializer;
+       php_ion_unserializer *s = &php_ion_globals.unserializer;
 
        if (!s->level++) {
-               zend_hash_clean(&s->addref);
-               zend_hash_clean(&s->ids);
-               zend_hash_clean(&s->tmp);
+               zend_hash_clean(s->addref);
+               zend_hash_clean(s->ids);
+               zend_hash_clean(s->tmp);
        }
 }
 
 static inline void php_ion_globals_unserializer_exit(void)
 {
-       php_ion_global_unserializer *s = &php_ion_globals.unserializer;
+       php_ion_unserializer *s = &php_ion_globals.unserializer;
 
        ZEND_ASSERT(s->level);
        if (!--s->level) {
-               zend_hash_clean(&s->addref);
-               zend_hash_clean(&s->ids);
-               zend_hash_clean(&s->tmp);
+               zend_hash_clean(s->addref);
+               zend_hash_clean(s->ids);
+               zend_hash_clean(s->tmp);
        }
 }
 
 static inline void php_ion_globals_unserializer_dtor(void)
 {
-       php_ion_global_unserializer *s = &php_ion_globals.unserializer;
+       php_ion_unserializer *s = &php_ion_globals.unserializer;
 
-       zend_hash_destroy(&s->addref);
-       zend_hash_destroy(&s->ids);
-       zend_hash_destroy(&s->tmp);
+       zend_hash_destroy(s->addref);
+       zend_hash_destroy(s->ids);
+       zend_hash_destroy(s->tmp);
 }
 
 static zend_class_entry
@@ -136,8 +170,6 @@ static zend_class_entry
        *ce_Collection,
        *ce_Decimal,
        *ce_Decimal_Context,
-       *ce_PHP_Serializer,
-       *ce_PHP_Unserializer,
        *ce_Reader,
        *ce_Reader_Options,
        *ce_Reader_Reader,
@@ -145,13 +177,18 @@ static zend_class_entry
        *ce_Reader_Stream,
        *ce_Reader_Buffer_Reader,
        *ce_Reader_Stream_Reader,
+       *ce_Serializer,
+       *ce_Serializer_PHP,
        *ce_Symbol,
        *ce_Symbol_ImportLocation,
        *ce_Symbol_System,
        *ce_Symbol_System_SID,
        *ce_Symbol_Table,
        *ce_Timestamp,
+       *ce_Timestamp_Precision,
        *ce_Type,
+       *ce_Unserializer,
+       *ce_Unserializer_PHP,
        *ce_Writer,
        *ce_Writer_Options,
        *ce_Writer_Buffer,
@@ -160,44 +197,31 @@ static zend_class_entry
        *ce_Writer_Stream_Writer,
        *ce_Writer_Writer
        ;
-static zend_object_handlers
-       oh_catalog,
-       oh_decimal,
-       oh_decimal_ctx,
-       oh_reader_options,
-       oh_reader,
-       oh_symbol,
-       oh_symbol_iloc,
-       oh_symbol_table,
-       oh_timestamp,
-       oh_type,
-       oh_writer_options,
-       oh_writer
-       ;
 
-#define php_ion_decl(type, name, ...) \
-       static zend_object *create_ion_ ## name(zend_class_entry *ce) \
+#define php_ion_decl(type, cname, ...) \
+       static zend_object_handlers oh_ ## cname; \
+       static inline zend_object *create_ion_ ## cname(zend_class_entry *ce) \
        { \
-               if (!ce) ce = ce_ ## name; \
+               if (!ce) ce = ce_ ## cname; \
                php_ion_ ## type *o = ecalloc(1, sizeof(*o) + zend_object_properties_size(ce)); \
                zend_object_std_init(&o->std, ce); \
                object_properties_init(&o->std, ce); \
-               o->std.handlers = &oh_ ## type; \
+               o->std.handlers = &oh_ ## cname; \
                return &o->std; \
        } \
-       static void free_ion_ ## name(zend_object *std) \
+       static inline void free_ion_ ## cname(zend_object *std) \
        { \
                php_ion_ ## type *obj = php_ion_obj(type, std); \
                __VA_ARGS__; \
                zend_object_std_dtor(std); \
                (void) obj; \
        }
-#define php_ion_register(type, name, ...) do { \
-       ce_ ## name = register_class_ion_ ## name(__VA_ARGS__); \
-       ce_ ## name ->create_object = create_ion_ ## name; \
-       memcpy(&oh_ ## type, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); \
-       oh_ ## type .offset = offsetof(php_ion_ ## type, std); \
-       oh_ ## type .free_obj = free_ion_ ## name; \
+#define php_ion_register(type, cname, ...) do { \
+       ce_ ## cname = register_class_ion_ ## cname(__VA_ARGS__); \
+       ce_ ## cname ->create_object = create_ion_ ## cname; \
+       memcpy(&oh_ ## cname, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); \
+       oh_ ## cname .offset = offsetof(php_ion_ ## type, std); \
+       oh_ ## cname .free_obj = free_ion_ ## cname; \
 } while (0)
 
 #define php_ion_obj(type, obj) \
@@ -241,8 +265,8 @@ static inline ION_STRING *ion_string_from_cstr(ION_STRING *is, const char *s, si
 
 static inline ION_STRING *ion_string_from_zend(ION_STRING *is, const zend_string *zs)
 {
-       is->length = ZSTR_LEN(zs);
-       is->value = (BYTE *) ZSTR_VAL(zs);
+       is->length = zs ? zs->len : 0;
+       is->value = (BYTE *) (zs ? zs->val : NULL);
        return is;
 }
 
@@ -263,6 +287,8 @@ typedef struct php_ion_type {
        zend_object std;
 } php_ion_type;
 
+php_ion_decl(type, Type);
+
 #define RETURN_IONTYPE(typ) do { \
        zend_object *__zo = php_ion_type_fetch(typ); \
        if (UNEXPECTED(!__zo)) { \
@@ -301,6 +327,8 @@ static inline void php_ion_symbol_iloc_dtor(php_ion_symbol_iloc *obj)
        zend_string_release(obj->name);
 }
 
+php_ion_decl(symbol_iloc, Symbol_ImportLocation, php_ion_symbol_iloc_dtor(obj));
+
 typedef struct php_ion_symbol {
        ION_SYMBOL sym;
        zend_string *value;
@@ -311,7 +339,11 @@ static inline void php_ion_symbol_ctor(php_ion_symbol *obj)
 {
        zend_update_property_long(obj->std.ce, &obj->std, ZEND_STRL("sid"),
                obj->sym.sid);
-       zend_update_property_str(obj->std.ce, &obj->std, ZEND_STRL("value"), obj->value);
+       if (obj->value) {
+               zend_update_property_str(obj->std.ce, &obj->std, ZEND_STRL("value"), obj->value);
+       } else{
+               zend_update_property_null(obj->std.ce, &obj->std, ZEND_STRL("value"));
+       }
        ion_string_from_zend(&obj->sym.value, obj->value);
        if (obj->iloc) {
                update_property_obj(&obj->std, ZEND_STRL("importLocation"), obj->iloc);
@@ -323,7 +355,9 @@ static inline void php_ion_symbol_ctor(php_ion_symbol *obj)
 
 static inline void php_ion_symbol_dtor(php_ion_symbol *obj)
 {
-       zend_string_release(obj->value);
+       if (obj->value) {
+               zend_string_release(obj->value);
+       }
 }
 
 static inline void php_ion_symbol_zval(ION_SYMBOL *sym_ptr, zval *return_value)
@@ -348,33 +382,46 @@ static inline void php_ion_symbol_zval(ION_SYMBOL *sym_ptr, zval *return_value)
        php_ion_symbol_ctor(sym);
 }
 
+php_ion_decl(symbol, Symbol, php_ion_symbol_dtor(obj));
+
 typedef struct php_ion_symbol_table {
        zend_object std;
 } php_ion_symbol_table;
 
+php_ion_decl(symbol_table, Symbol_Table);
+
 typedef struct php_ion_decimal_ctx {
        decContext ctx;
        zend_object std;
 } php_ion_decimal_ctx;
 
-typedef struct php_ion_decimal {
-       ION_DECIMAL dec;
-       zend_object *ctx, std;
-} php_ion_decimal;
+static inline void php_ion_decimal_ctx_ctor(php_ion_decimal_ctx *obj) {
+       zval tmp, *zbits = zend_read_property(obj->std.ce, &obj->std, ZEND_STRL("bits"), 1, &tmp);
 
-static inline void php_ion_decimal_ctor(php_ion_decimal *obj)
-{
-       if (obj->ctx) {
-               update_property_obj(&obj->std, ZEND_STRL("context"), obj->ctx);
+       int bits = 128;
+       if (zbits != &EG(uninitialized_zval)) {
+               bits = Z_LVAL_P(zbits);
        } else {
-               zend_update_property_null(obj->std.ce, &obj->std, ZEND_STRL("context"));
+               zend_update_property_long(obj->std.ce, &obj->std, ZEND_STRL("bits"), bits);
+       }
+       switch (bits) {
+       case 32:
+       case 64:
+       case 128:
+               decContextDefault(&obj->ctx, bits);
+               break;
+       default:
+               zend_throw_exception_ex(spl_ce_InvalidArgumentException, IERR_INVALID_ARG,
+                               "Decimal context only allows 32, 64 or 128 bits");
        }
 }
 
-static inline void php_ion_decimal_dtor(php_ion_decimal *obj)
-{
-       ion_decimal_free(&obj->dec);
-}
+php_ion_decl(decimal_ctx, Decimal_Context);
+
+typedef struct php_ion_decimal {
+       ION_DECIMAL dec;
+       zend_object *ctx, std;
+} php_ion_decimal;
 
 static inline zend_string *php_ion_decimal_to_string(ION_DECIMAL *dec)
 {
@@ -383,44 +430,48 @@ static inline zend_string *php_ion_decimal_to_string(ION_DECIMAL *dec)
        return zend_string_truncate(zstr, strlen(zstr->val), 0);
 }
 
-static zend_array *php_ion_decimal_get_props_for(zend_object *object, zend_prop_purpose purpose)
+static inline void php_ion_decimal_to_int(ION_DECIMAL *dec, decContext *ctx, zend_long *l)
 {
-       php_ion_decimal *obj = php_ion_obj(decimal, object);
-
-       switch (purpose) {
-               case ZEND_PROP_PURPOSE_DEBUG:
-                       zend_array *arr = zend_new_array(1);
-                       zval *zv = zend_hash_str_add_empty_element(arr, ZEND_STRL("value"));
-                       ZVAL_STR(zv, php_ion_decimal_to_string(&obj->dec));
-                       return arr;
-
-               default:
-                       return zend_std_get_properties_for(object, purpose);
-       }
+       ION_INT *ii = NULL;
+       ION_CHECK(ion_int_alloc(NULL, &ii));
+       ION_CHECK(ion_decimal_to_ion_int(dec, ctx, ii), ion_int_free(ii));
+       int64_t i64;
+       ION_CHECK(ion_int_to_int64(ii, &i64), ion_int_free(ii));
+       *l = i64;
+       ion_int_free(ii);
 }
 
-typedef php_date_obj php_ion_timestamp;
-
-static inline void php_ion_timestamp_ctor(php_ion_timestamp *obj, zend_long precision, zend_string *fmt, zend_string *dt, zval *tz)
+static inline void php_ion_decimal_ctor(php_ion_decimal *obj)
 {
-       if (!obj->time) {
-               php_date_initialize(obj, dt ? dt->val : "now", dt ? dt->len : 3, fmt ? fmt->val : NULL, tz, PHP_DATE_INIT_CTOR);
+       if (!obj->ctx) {
+               zval zdc;
+               object_init_ex(&zdc, ce_Decimal_Context);
+               obj->ctx = Z_OBJ(zdc);
+               php_ion_decimal_ctx_ctor(php_ion_obj(decimal_ctx, obj->ctx));
+               GC_DELREF(obj->ctx);
        }
-       zend_update_property_long(obj->std.ce, &obj->std, ZEND_STRL("precision"), precision);
-       if (fmt) {
-               zend_update_property_str(obj->std.ce, &obj->std, ZEND_STRL("format"), fmt);
+       update_property_obj(&obj->std, ZEND_STRL("context"), obj->ctx);
+
+       if (ion_decimal_is_integer(&obj->dec)) {
+               zend_long l;
+               php_ion_decimal_to_int(&obj->dec, &php_ion_obj(decimal_ctx, obj->ctx)->ctx, &l);
+               zend_update_property_long(obj->std.ce, &obj->std, ZEND_STRL("number"), l);
        } else {
-               zend_update_property_stringl(obj->std.ce, &obj->std, ZEND_STRL("format"), ZEND_STRL("c"));
+               zend_string *zstr = php_ion_decimal_to_string(&obj->dec);
+               zend_update_property_str(obj->std.ce, &obj->std, ZEND_STRL("number"), zstr);
+               zend_string_release(zstr);
        }
 }
 
-static inline void php_ion_timestamp_dtor(php_ion_timestamp *obj)
+static inline void php_ion_decimal_dtor(php_ion_decimal *obj)
 {
-       if (obj->time) {
-               timelib_time_dtor(obj->time);
-       }
+       ion_decimal_free(&obj->dec);
 }
 
+php_ion_decl(decimal, Decimal, php_ion_decimal_dtor(obj));
+
+typedef php_date_obj php_ion_timestamp;
+
 static inline zend_long php_usec_from_ion(const decQuad *frac, decContext *ctx)
 {
        decQuad microsecs, result;
@@ -434,6 +485,26 @@ static inline decQuad *ion_ts_frac_from_usec(decQuad *frac, zend_long usec, decC
        return decQuadDivide(frac, decQuadFromInt32(&us, usec), decQuadFromInt32(&microsecs, 1000000), ctx);
 }
 
+static inline zend_string *php_dt_format_from_precision(uint8_t precision)
+{
+       switch (precision) {
+       case ION_TS_FRAC:
+               return zend_string_init(ZEND_STRL("c"), 0);
+       case ION_TS_SEC:
+               return zend_string_init(ZEND_STRL("Y-m-d\\TH:i:sP"), 0);
+       case ION_TS_MIN:
+               return zend_string_init(ZEND_STRL("Y-m-d\\TH:iP"), 0);
+       case ION_TS_DAY:
+               return zend_string_init(ZEND_STRL("Y-m-d\\T"), 0);
+       case ION_TS_MONTH:
+               return zend_string_init(ZEND_STRL("Y-m\\T"), 0);
+       case ION_TS_YEAR:
+               return zend_string_init(ZEND_STRL("Y\\T"), 0);
+       default:
+               return zend_string_init(ZEND_STRL("c"), 0);
+       }
+}
+
 static inline timelib_time* php_time_from_ion(const ION_TIMESTAMP *ts, decContext *ctx, zend_string **fmt)
 {
        timelib_time *time = timelib_time_ctor();
@@ -441,34 +512,30 @@ static inline timelib_time* php_time_from_ion(const ION_TIMESTAMP *ts, decContex
        switch (ts->precision) {
        case ION_TS_FRAC:
                time->us = php_usec_from_ion(&ts->fraction, ctx);
-               if (fmt) *fmt = zend_string_init(ZEND_STRL("c"), 0);
                /* fallthrough */
        case ION_TS_SEC:
                time->s = ts->seconds;
-               if (fmt && !*fmt) *fmt = zend_string_init(ZEND_STRL("Y-m-d\\TH:i:sP"), 0);
                /* fallthrough */
        case ION_TS_MIN:
                time->i = ts->minutes;
                time->h = ts->hours;
-               if (fmt && !*fmt) *fmt = zend_string_init(ZEND_STRL("Y-m-d\\TH:iP"), 0);
                /* fallthrough */
        case ION_TS_DAY:
                time->d = ts->day;
-               if (fmt && !*fmt) *fmt = zend_string_init(ZEND_STRL("Y-m-d\\T"), 0);
                /* fallthrough */
        case ION_TS_MONTH:
                time->m = ts->month;
-               if (fmt && !*fmt) *fmt = zend_string_init(ZEND_STRL("Y-m\\T"), 0);
                /* fallthrough */
        case ION_TS_YEAR:
                time->y = ts->year;
-               if (fmt && !*fmt) *fmt = zend_string_init(ZEND_STRL("Y\\T"), 0);
                /* fallthrough */
        default:
-               if (fmt && !*fmt) *fmt = zend_string_init(ZEND_STRL("c"), 0);
                time->z = ts->tz_offset * 60;
        }
 
+       if (fmt) {
+               *fmt = php_dt_format_from_precision(ts->precision);
+       }
        return time;
 }
 
@@ -509,16 +576,41 @@ static inline ION_TIMESTAMP *ion_timestamp_from_php(ION_TIMESTAMP *buf, php_ion_
        return buf;
 }
 
+static inline void php_ion_timestamp_ctor(php_ion_timestamp *obj, zend_long precision, zend_string *fmt, zend_string *dt, zval *tz)
+{
+       if (!obj->time) {
+               php_date_initialize(obj, dt ? dt->val : "", dt ? dt->len : 0, fmt ? fmt->val : NULL, tz, PHP_DATE_INIT_CTOR);
+       }
+       zend_update_property_long(obj->std.ce, &obj->std, ZEND_STRL("precision"), precision);
+
+       fmt = php_dt_format_from_precision(precision);
+       zend_update_property_str(obj->std.ce, &obj->std, ZEND_STRL("format"), fmt);
+       zend_string_release(fmt);
+}
+
+static inline void php_ion_timestamp_dtor(php_ion_timestamp *obj)
+{
+       if (obj->time) {
+               timelib_time_dtor(obj->time);
+       }
+}
+
+php_ion_decl(timestamp, Timestamp, php_ion_timestamp_dtor(obj));
+
 typedef struct php_ion_catalog {
        ION_CATALOG *cat;
        zend_object std;
 } php_ion_catalog;
 
+php_ion_decl(catalog, Catalog);
+
 typedef struct php_ion_reader_options {
        ION_READER_OPTIONS opt;
        zend_object *cat, *dec_ctx, *cb, std;
 } php_ion_reader_options;
 
+php_ion_decl(reader_options, Reader_Options);
+
 typedef struct php_ion_reader {
        ION_READER *reader;
        ION_TYPE state;
@@ -533,14 +625,10 @@ typedef struct php_ion_reader {
                        ION_STRING buf;
                } stream;
        };
-       struct {
-               zend_bool call_magic_unserialize;
-               zend_string *custom_unserialize;
-       } php;
        zend_object *opt, std;
 } php_ion_reader;
 
-static iERR php_ion_reader_stream_handler(struct _ion_user_stream *user)
+static inline iERR php_ion_reader_stream_handler(struct _ion_user_stream *user)
 {
        php_ion_reader *reader = (php_ion_reader *) user->handler_state;
        size_t remaining = 0, spare = reader->stream.buf.length;
@@ -566,7 +654,7 @@ static iERR php_ion_reader_stream_handler(struct _ion_user_stream *user)
        return IERR_READ_ERROR;
 }
 
-static iERR on_context_change(void *context, ION_COLLECTION *imports)
+static inline iERR on_context_change(void *context, ION_COLLECTION *imports)
 {
        if (context) {
                php_ion_reader *obj = php_ion_obj(reader, context);
@@ -628,11 +716,15 @@ static inline void php_ion_reader_dtor(php_ion_reader *obj)
        }
 }
 
+php_ion_decl(reader, Reader_Reader, php_ion_reader_dtor(obj));
+
 typedef struct php_ion_writer_options {
        ION_WRITER_OPTIONS opt;
        zend_object *cat, *dec_ctx, *col, std;
 } php_ion_writer_options;
 
+php_ion_decl(writer_options, Writer_Options);
+
 typedef struct php_ion_writer {
        ION_WRITER *writer;
        enum {
@@ -649,15 +741,11 @@ typedef struct php_ion_writer {
                        php_stream *ptr;
                } stream;
        };
-       struct {
-               zend_bool call_magic_serialize;
-               zend_string *custom_serialize;
-       } php;
        zend_object *opt, std;
 
 } php_ion_writer;
 
-static iERR php_ion_writer_stream_handler(struct _ion_user_stream *user)
+static inline iERR php_ion_writer_stream_handler(struct _ion_user_stream *user)
 {
        php_ion_writer *writer = (php_ion_writer *) user->handler_state;
 
@@ -734,7 +822,7 @@ static inline void php_ion_writer_buffer_grow(php_ion_writer *obj)
        NEW_REF_STR();
 }
 
-static iERR php_ion_writer_buffer_handler(struct _ion_user_stream *user)
+static inline iERR php_ion_writer_buffer_handler(struct _ion_user_stream *user)
 {
        php_ion_writer *writer = (php_ion_writer *) user->handler_state;
 
@@ -784,20 +872,57 @@ static inline void php_ion_writer_dtor(php_ion_writer *obj)
                        zend_list_delete(obj->stream.ptr->res);
                }
        } else {
-               smart_str_0(&obj->buffer.str);
-               zend_string_release(obj->buffer.str.s);
+               if (obj->buffer.str.s) {
+                       smart_str_0(&obj->buffer.str);
+                       zend_string_release(obj->buffer.str.s);
+               }
                zval_ptr_dtor(&obj->buffer.val);
        }
-       if (obj->php.custom_serialize) {
-               zend_string_release(obj->php.custom_serialize);
+}
+
+php_ion_decl(writer, Writer_Writer, php_ion_writer_dtor(obj));
+
+typedef struct php_ion_serializer_php {
+       php_ion_serializer serializer;
+       zend_object *opt, std;
+} php_ion_serializer_php;
+
+static inline void php_ion_serializer_php_ctor(php_ion_serializer_php *ser_obj)
+{
+       php_ion_serializer *global_ser = &php_ion_globals.serializer;
+       ser_obj->serializer.ids = global_ser->ids;
+       ser_obj->serializer.tmp = global_ser->tmp;
+
+       zend_update_property_bool(ser_obj->std.ce, &ser_obj->std, ZEND_STRL("callMagicSerialize"),
+                       ser_obj->serializer.call_magic);
+       if (ser_obj->serializer.call_custom) {
+               zend_update_property_str(ser_obj->std.ce, &ser_obj->std, ZEND_STRL("callCustomSerialize"),
+                               ser_obj->serializer.call_custom);
+               ser_obj->serializer.call_custom = zend_string_tolower(ser_obj->serializer.call_custom);
+       } else {
+               zend_update_property_null(ser_obj->std.ce, &ser_obj->std, ZEND_STRL("callCustomSerialize"));
+       }
+       if (ser_obj->opt) {
+               php_ion_writer_options *o_woptions = php_ion_obj(writer_options, ser_obj->opt);
+               ser_obj->serializer.options = &o_woptions->opt;
+               update_property_obj(&ser_obj->std, ZEND_STRL("writerOptions"), ser_obj->opt);
+       } else {
+               zend_update_property_null(ser_obj->std.ce, &ser_obj->std, ZEND_STRL("writerOptions"));
        }
 }
 
-static inline void php_ion_serialize_zval(php_ion_writer *, zval *);
+static inline void php_ion_serializer_php_dtor(php_ion_serializer_php *obj)
+{
+       if (obj->serializer.call_custom) {
+               zend_string_release(obj->serializer.call_custom);
+       }
+}
+
+static inline void php_ion_serialize_zval(php_ion_serializer *, zval *);
 
-static inline void php_ion_serialize_struct(php_ion_writer *obj, zend_array *arr)
+static inline void php_ion_serialize_struct(php_ion_serializer *ser, zend_array *arr, bool props)
 {
-       ION_CHECK(ion_writer_start_container(obj->writer, tid_STRUCT));
+       ION_CHECK(ion_writer_start_container(ser->writer, tid_STRUCT));
 
        zval *v;
        zend_ulong h;
@@ -805,43 +930,52 @@ static inline void php_ion_serialize_struct(php_ion_writer *obj, zend_array *arr
        if (arr) ZEND_HASH_FOREACH_KEY_VAL_IND(arr, h, k, v)
                ION_STRING is;
                if (k) {
-                       ION_CHECK(ion_writer_write_field_name(obj->writer, ion_string_from_zend(&is, k)));
+                       size_t prop_len;
+                       const char *class_name, *prop_name;
+                       if (props && (SUCCESS == zend_unmangle_property_name_ex(k, &class_name, &prop_name, &prop_len)) && class_name) {
+                               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, ZEND_STRL("p"))));
+                               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, class_name, prop_name - class_name - 1)));
+                       } else {
+                               prop_name = k->val;
+                               prop_len = k->len;
+                       }
+                       ION_CHECK(ion_writer_write_field_name(ser->writer, ion_string_from_cstr(&is, prop_name, prop_len)));
                } else {
                        char buf[MAX_LENGTH_OF_LONG + 1], *end = buf + sizeof(buf) - 1;
                        char *ptr = zend_print_long_to_buf(end, (zend_long) h);
-                       ION_CHECK(ion_writer_write_field_name(obj->writer, ion_string_from_cstr(&is, ptr, end - ptr)));
+                       ION_CHECK(ion_writer_write_field_name(ser->writer, ion_string_from_cstr(&is, ptr, end - ptr)));
                }
 
-               php_ion_serialize_zval(obj, v);
+               php_ion_serialize_zval(ser, v);
                ION_CATCH();
        ZEND_HASH_FOREACH_END();
 
-       ION_CHECK(ion_writer_finish_container(obj->writer));
+       ION_CHECK(ion_writer_finish_container(ser->writer));
 }
 
-static inline void php_ion_serialize_list(php_ion_writer *obj, zend_array *arr)
+static inline void php_ion_serialize_list(php_ion_serializer *ser, zend_array *arr)
 {
-       ION_CHECK(ion_writer_start_container(obj->writer, tid_LIST));
+       ION_CHECK(ion_writer_start_container(ser->writer, tid_LIST));
 
        zval *v;
        ZEND_HASH_FOREACH_VAL_IND(arr, v)
-               php_ion_serialize_zval(obj, v);
+               php_ion_serialize_zval(ser, v);
                ION_CATCH();
        ZEND_HASH_FOREACH_END();
 
-       ION_CHECK(ion_writer_finish_container(obj->writer));
+       ION_CHECK(ion_writer_finish_container(ser->writer));
 }
 
-static inline void php_ion_serialize_array(php_ion_writer *obj, zend_array *arr)
+static inline void php_ion_serialize_array(php_ion_serializer *ser, zend_array *arr)
 {
        if (zend_array_is_list(arr)) {
-               php_ion_serialize_list(obj, arr);
+               php_ion_serialize_list(ser, arr);
        } else {
-               php_ion_serialize_struct(obj, arr);
+               php_ion_serialize_struct(ser, arr, false);
        }
 }
 
-static inline void php_ion_serialize_object_iface(php_ion_writer *obj, zend_object *zobject)
+static inline void php_ion_serialize_object_iface(php_ion_serializer *ser, zend_object *zobject)
 {
        uint8_t *buf;
        size_t len;
@@ -850,9 +984,9 @@ static inline void php_ion_serialize_object_iface(php_ion_writer *obj, zend_obje
        ZVAL_OBJ(&tmp, zobject);
        if (SUCCESS == zobject->ce->serialize(&tmp, &buf, &len, NULL)) {
                ION_STRING is;
-               ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_cstr(&is, ZEND_STRL("S"))));
-               ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_zend(&is, zobject->ce->name)));
-               ION_CHECK(ion_writer_write_string(obj->writer, ion_string_from_cstr(&is, (char *) buf, len)));
+               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, ZEND_STRL("S"))));
+               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_zend(&is, zobject->ce->name)));
+               ION_CHECK(ion_writer_write_string(ser->writer, ion_string_from_cstr(&is, (char *) buf, len)));
                efree(buf);
        } else if (!EG(exception)){
                zend_throw_exception_ex(spl_ce_UnexpectedValueException, IERR_INTERNAL_ERROR,
@@ -860,19 +994,19 @@ static inline void php_ion_serialize_object_iface(php_ion_writer *obj, zend_obje
        }
 }
 
-static inline void php_ion_serialize_object_magic(php_ion_writer *obj, zend_object *zobject, zend_function *fn)
+static inline void php_ion_serialize_object_magic(php_ion_serializer *ser, zend_object *zobject, zend_function *fn)
 {
        zval rv;
 
        ZVAL_NULL(&rv);
-       zend_call_method_with_0_params(zobject, zobject->ce, fn ? &fn : &zobject->ce->__serialize, "", &rv);
+       zend_call_known_instance_method_with_0_params(fn ? fn : zobject->ce->__serialize, zobject, &rv);
        ION_CATCH();
 
        if (IS_ARRAY == Z_TYPE(rv)) {
                ION_STRING is;
-               ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_cstr(&is, fn ? "C" : "O", 1)));
-               ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_zend(&is, zobject->ce->name)));
-               php_ion_serialize_zval(obj, &rv);
+               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, fn ? "C" : "O", 1)));
+               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_zend(&is, zobject->ce->name)));
+               php_ion_serialize_zval(ser, &rv);
                zval_ptr_dtor(&rv);
        } else {
                zend_throw_exception_ex(spl_ce_UnexpectedValueException, IERR_INTERNAL_ERROR,
@@ -885,40 +1019,41 @@ static inline void php_ion_serialize_object_magic(php_ion_writer *obj, zend_obje
 static inline zend_string *fq_enum_case(zend_object *zobject)
 {
        zval *cn = zend_enum_fetch_case_name(zobject);
-       zend_string *en = zend_string_alloc(zobject->ce->name->len + Z_STRLEN_P(cn) + strlen("\\"), 0);
+       zend_string *en = zend_string_alloc(zobject->ce->name->len + Z_STRLEN_P(cn) + strlen("::"), 0);
        memcpy(en->val, zobject->ce->name->val, zobject->ce->name->len);
-       en->val[zobject->ce->name->len] = '\\';
-       memcpy(&en->val[zobject->ce->name->len + 1], Z_STRVAL_P(cn), Z_STRLEN_P(cn));
+       en->val[zobject->ce->name->len] = ':';
+       en->val[zobject->ce->name->len + 1] = ':';
+       memcpy(&en->val[zobject->ce->name->len + 2], Z_STRVAL_P(cn), Z_STRLEN_P(cn));
        en->val[en->len] = 0;
        return en;
 }
 
-static inline void php_ion_serialize_object_enum(php_ion_writer *obj, zend_object *zobject)
+static inline void php_ion_serialize_object_enum(php_ion_serializer *ser, zend_object *zobject)
 {
        ION_STRING is;
-       ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_cstr(&is, ZEND_STRL("E"))));
+       ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, ZEND_STRL("E"))));
 
-       zend_string *en = fq_enum_case(zobject);
-       ION_CHECK(ion_writer_write_string(obj->writer, ion_string_from_zend(&is, en)));
-       zend_string_release(en);
+       ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_zend(&is, zobject->ce->name)));
+       zval *z_cname = zend_enum_fetch_case_name(zobject);
+       ION_CHECK(ion_writer_write_symbol(ser->writer, ion_string_from_zend(&is, Z_STR_P(z_cname))));
 }
 
-static inline void php_ion_serialize_object_std(php_ion_writer *obj, zend_object *zobject)
+static inline void php_ion_serialize_object_std(php_ion_serializer *ser, zend_object *zobject)
 {
        ION_STRING is;
 
        if (zobject->ce != zend_standard_class_def) {
-               ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_cstr(&is, ZEND_STRL("c"))));
-               ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_zend(&is, zobject->ce->name)));
+               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, ZEND_STRL("c"))));
+               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_zend(&is, zobject->ce->name)));
        } else {
-               ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_cstr(&is, ZEND_STRL("o"))));
+               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, ZEND_STRL("o"))));
        }
 
        zval zobj;
        ZVAL_OBJ(&zobj, zobject);
        HashTable *props = zend_get_properties_for(&zobj, ZEND_PROP_PURPOSE_SERIALIZE);
        if (props) {
-               php_ion_serialize_struct(obj, props);
+               php_ion_serialize_struct(ser, props, true);
                zend_release_properties(props);
        } else {
                zend_throw_exception_ex(spl_ce_UnexpectedValueException, IERR_INTERNAL_ERROR,
@@ -927,28 +1062,25 @@ static inline void php_ion_serialize_object_std(php_ion_writer *obj, zend_object
        }
 }
 
-static inline bool can_call_magic_serialize(php_ion_writer *obj, zend_class_entry *ce)
+static inline bool can_call_magic_serialize(php_ion_serializer *ser, zend_class_entry *ce)
 {
-       if (ce->__serialize && obj->php.call_magic_serialize) {
-               return true;
-       }
-       return false;
+       return ce->__serialize && ser->call_magic;
 }
 
-static inline bool can_call_iface_serialize(php_ion_writer *obj, zend_class_entry *ce)
+static inline bool can_call_iface_serialize(php_ion_serializer *, zend_class_entry *ce)
 {
        return !!ce->serialize;
 }
 
-static inline bool can_call_custom_serialize(php_ion_writer *obj, zend_object *zobject, zend_function **fn)
+static inline bool can_call_custom_serialize(php_ion_serializer *ser, zend_object *zobject, zend_function **fn)
 {
-       if (obj->php.custom_serialize) {
-               return !!((*fn = zend_hash_find_ptr(&zobject->ce->function_table, obj->php.custom_serialize)));
+       if (ser->call_custom) {
+               return !!(*fn = zend_hash_find_ptr(&zobject->ce->function_table, ser->call_custom));
        }
        return false;
 }
 
-static inline void php_ion_serialize_object(php_ion_writer *obj, zend_object *zobject)
+static inline void php_ion_serialize_object(php_ion_serializer *ser, zend_object *zobject)
 {
        zend_function *fn;
        zend_class_entry *ce = zobject->ce;
@@ -960,210 +1092,313 @@ static inline void php_ion_serialize_object(php_ion_writer *obj, zend_object *zo
                return;
        }
 
-       if (can_call_magic_serialize(obj, ce)) {
-               php_ion_serialize_object_magic(obj, zobject, NULL);
-       } else if (can_call_iface_serialize(obj, ce)) {
-               php_ion_serialize_object_iface(obj, zobject);
-       } else if (can_call_custom_serialize(obj, zobject, &fn)) {
-               php_ion_serialize_object_magic(obj, zobject, fn);
+       if (can_call_magic_serialize(ser, ce)) {
+               php_ion_serialize_object_magic(ser, zobject, NULL);
+       } else if (can_call_iface_serialize(ser, ce)) {
+               php_ion_serialize_object_iface(ser, zobject);
+       } else if (can_call_custom_serialize(ser, zobject, &fn)) {
+               php_ion_serialize_object_magic(ser, zobject, fn);
        } else if (zobject->ce->ce_flags & ZEND_ACC_ENUM) {
-               php_ion_serialize_object_enum(obj, zobject);
+               php_ion_serialize_object_enum(ser, zobject);
        } else if (ce == ce_Symbol) {
-               ION_CHECK(ion_writer_write_ion_symbol(obj->writer, &php_ion_obj(symbol, zobject)->sym));
+               ION_CHECK(ion_writer_write_ion_symbol(ser->writer, &php_ion_obj(symbol, zobject)->sym));
        } else if (ce == ce_Decimal) {
-               ION_CHECK(ion_writer_write_ion_decimal(obj->writer, &php_ion_obj(decimal, zobject)->dec));
+               ION_CHECK(ion_writer_write_ion_decimal(ser->writer, &php_ion_obj(decimal, zobject)->dec));
        } else if (ce == ce_Timestamp) {
                ION_TIMESTAMP its;
                php_ion_timestamp *pts = php_ion_obj(timestamp, zobject);
-               php_ion_writer_options *opt = php_ion_obj(writer_options, obj->opt);
-               decContext *ctx = opt ? opt->opt.decimal_context : NULL;
-               ION_CHECK(ion_writer_write_timestamp(obj->writer, ion_timestamp_from_php(&its, pts, ctx)));
+               decContext *ctx = ser->options ? ser->options->decimal_context : NULL;
+               ION_CHECK(ion_writer_write_timestamp(ser->writer, ion_timestamp_from_php(&its, pts, ctx)));
        } else {
-               php_ion_serialize_object_std(obj, zobject);
+               php_ion_serialize_object_std(ser, zobject);
        }
 }
 
-static inline void php_ion_serialize_refcounted(php_ion_writer *obj, zval *zv)
+static inline void php_ion_serialize_refcounted(php_ion_serializer *ser, zval *zv)
 {
        zend_ulong idx = (zend_ulong) (uintptr_t) Z_COUNTED_P(zv);
 
        ION_STRING is;
-       if (zend_hash_index_exists(&php_ion_globals.serializer.ids, idx)) {
-               zval *num = zend_hash_index_find(&php_ion_globals.serializer.ids, idx);
+       if (zend_hash_index_exists(ser->ids, idx)) {
+               zval *num = zend_hash_index_find(ser->ids, idx);
 
-               ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_cstr(&is, ZEND_STRL("r"))));
-               ION_CHECK(ion_writer_write_int64(obj->writer, Z_LVAL_P(num)));
+               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, ZEND_STRL("r"))));
+               ION_CHECK(ion_writer_write_int64(ser->writer, Z_LVAL_P(num)));
        } else {
                zval num;
 
-               ZVAL_LONG(&num, zend_hash_num_elements(&php_ion_globals.serializer.ids));
-               zend_hash_index_add(&php_ion_globals.serializer.ids, idx, &num);
+               ZVAL_LONG(&num, zend_hash_num_elements(ser->ids));
+               zend_hash_index_add(ser->ids, idx, &num);
 
                Z_TRY_ADDREF_P(zv);
-               zend_hash_next_index_insert(&php_ion_globals.serializer.tmp, zv);
+               zend_hash_next_index_insert(ser->tmp, zv);
 
                switch (Z_TYPE_P(zv)) {
                case IS_STRING:
-                       ION_CHECK(ion_writer_write_string(obj->writer, ion_string_from_zend(&is, Z_STR_P(zv))));
+                       ION_CHECK(ion_writer_write_string(ser->writer, ion_string_from_zend(&is, Z_STR_P(zv))));
                        break;
 
                case IS_ARRAY:
-                       php_ion_serialize_array(obj, Z_ARRVAL_P(zv));
+                       php_ion_serialize_array(ser, Z_ARRVAL_P(zv));
                        break;
 
                case IS_OBJECT:
-                       php_ion_serialize_object(obj, Z_OBJ_P(zv));
+                       php_ion_serialize_object(ser, Z_OBJ_P(zv));
                        break;
 
                case IS_REFERENCE:
-                       ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_cstr(&is, ZEND_STRL("R"))));
-                       php_ion_serialize_zval(obj, Z_REFVAL_P(zv));
+                       ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, ZEND_STRL("R"))));
+                       php_ion_serialize_zval(ser, Z_REFVAL_P(zv));
                        break;
                }
        }
 }
 
-static inline void php_ion_serialize_zval(php_ion_writer *obj, zval *zv)
+static inline void php_ion_serialize_zval(php_ion_serializer *ser, zval *zv)
 {
-       OBJ_CHECK(obj);
+       OBJ_CHECK(ser);
 
        switch (Z_TYPE_P(zv)) {
        case IS_NULL:
-               ION_CHECK(ion_writer_write_null(obj->writer));
+               ION_CHECK(ion_writer_write_null(ser->writer));
                break;
        case IS_TRUE:
-               ION_CHECK(ion_writer_write_bool(obj->writer, TRUE));
+               ION_CHECK(ion_writer_write_bool(ser->writer, TRUE));
                break;
        case IS_FALSE:
-               ION_CHECK(ion_writer_write_bool(obj->writer, FALSE));
+               ION_CHECK(ion_writer_write_bool(ser->writer, FALSE));
                break;
        case IS_LONG:
-               ION_CHECK(ion_writer_write_int64(obj->writer, Z_LVAL_P(zv)));
+               ION_CHECK(ion_writer_write_int64(ser->writer, Z_LVAL_P(zv)));
                break;
        case IS_DOUBLE:
-               ION_CHECK(ion_writer_write_double(obj->writer, Z_DVAL_P(zv)));
+               ION_CHECK(ion_writer_write_double(ser->writer, Z_DVAL_P(zv)));
                break;
        case IS_STRING:
        case IS_ARRAY:
        case IS_OBJECT:
        case IS_REFERENCE:
-               php_ion_serialize_refcounted(obj, zv);
+               php_ion_serialize_refcounted(ser, zv);
                break;
        default:
                zend_throw_exception_ex(spl_ce_InvalidArgumentException, IERR_INVALID_ARG,
-                               "Failed to serialize value of type %s", zend_zval_get_legacy_type(zv)->val);
+                               "Failed to serialize value of type %s", zend_zval_type_name(zv));
        }
 }
 
-void php_ion_serialize(php_ion_writer *obj, zval *zv, zval *return_value)
+php_ion_decl(serializer_php, Serializer_PHP, php_ion_serializer_php_dtor(obj));
+
+void php_ion_serialize(php_ion_serializer *ser, zval *zv, zval *return_value)
 {
-       zval zwriter;
+       zend_object *zo_opt = NULL, *zo_ser = NULL;
 
-       if (obj) {
-               ZVAL_OBJ_COPY(&zwriter, &obj->std);
-       } else {
-               object_init_ex(&zwriter, ce_Writer_Buffer_Writer);
-               obj = php_ion_obj(writer, Z_OBJ(zwriter));
-               obj->type = BUFFER_WRITER;
-               php_ion_writer_ctor(obj);
+       if (!ser) {
+               zo_ser = create_ion_Serializer_PHP(NULL);
+               php_ion_serializer_php *o_ser = php_ion_obj(serializer_php, zo_ser);
+               PTR_CHECK(o_ser);
+               o_ser->serializer.call_magic = true;
+               php_ion_serializer_php_ctor(o_ser);
+               ION_CATCH();
+               ser = &o_ser->serializer;
        }
 
-       php_ion_globals_serializer_step();
+       zend_object *zo_writer = create_ion_Writer_Writer(ce_Writer_Buffer_Writer);
+       php_ion_writer *writer = php_ion_obj(writer, zo_writer);
+       writer->type = BUFFER_WRITER;
 
-       /* start off with a global PHP annotation instead of repeating it all over the place */
-       ION_STRING is;
-       ION_CHECK(ion_writer_add_annotation(obj->writer, ion_string_from_cstr(&is, ZEND_STRL("PHP"))));
+       if (ser->options) {
+               zo_opt = writer->opt = create_ion_Writer_Options(NULL);
+               php_ion_obj(writer_options, writer->opt)->opt = *ser->options;
+       }
 
-       php_ion_serialize_zval(obj, zv);
-
-       /* make sure to flush when done, else str.s might not contain everything until the writer is closed */
-       ion_writer_flush(obj->writer, NULL);
-       RETVAL_STR_COPY(obj->buffer.str.s);
+       php_ion_writer_ctor(writer);
+       ser->writer = writer->writer;
+       ser->buffer = &writer->buffer.str;
 
+       /* start off with a global PHP annotation instead of repeating it all over the place */
+       if (0 == php_ion_globals_serializer_step()) {
+               ION_STRING is;
+               ION_CHECK(ion_writer_add_annotation(ser->writer, ion_string_from_cstr(&is, ZEND_STRL("PHP"))),
+                               if (zo_ser) OBJ_RELEASE(zo_ser));
+       }
+       php_ion_serialize_zval(ser, zv);
        php_ion_globals_serializer_exit();
 
-       zval_ptr_dtor(&zwriter);
+       /* make sure to flush when done, else str.s might not contain everything until the writer is closed */
+       ion_writer_flush(ser->writer, NULL);
+       RETVAL_STR_COPY(ser->buffer->s);
+
+       OBJ_RELEASE(zo_writer);
+       if (zo_opt) {
+               OBJ_RELEASE(zo_opt);
+       }
+       if (zo_ser) {
+               OBJ_RELEASE(zo_ser);
+       }
 }
 
-static inline void php_ion_unserialize_zval(php_ion_reader *obj, zval *return_value, ION_TYPE *typ);
+typedef struct php_ion_unserializer_php {
+       php_ion_unserializer unserializer;
+       zend_object *opt, std;
+} php_ion_unserializer_php;
 
-static inline bool can_call_magic_unserialize(php_ion_reader *obj, zend_class_entry *ce)
+static inline void php_ion_unserializer_php_ctor(php_ion_unserializer_php *ser_obj)
 {
-       if (ce->__unserialize && obj->php.call_magic_unserialize) {
-               return true;
+       php_ion_unserializer *global_ser = &php_ion_globals.unserializer;
+       ser_obj->unserializer.ids = global_ser->ids;
+       ser_obj->unserializer.tmp = global_ser->tmp;
+       ser_obj->unserializer.addref = global_ser->addref;
+
+       zend_update_property_bool(ser_obj->std.ce, &ser_obj->std, ZEND_STRL("callMagicSerialize"),
+                       ser_obj->unserializer.call_magic);
+       if (ser_obj->unserializer.call_custom) {
+               zend_update_property_str(ser_obj->std.ce, &ser_obj->std, ZEND_STRL("callCustomSerialize"),
+                               ser_obj->unserializer.call_custom);
+               ser_obj->unserializer.call_custom = zend_string_tolower(ser_obj->unserializer.call_custom);
+       } else {
+               zend_update_property_null(ser_obj->std.ce, &ser_obj->std, ZEND_STRL("callCustomSerialize"));
        }
-       return false;
+       if (ser_obj->opt) {
+               php_ion_reader_options *o_roptions = php_ion_obj(reader_options, ser_obj->opt);
+               ser_obj->unserializer.options = &o_roptions->opt;
+               update_property_obj(&ser_obj->std, ZEND_STRL("readerOptions"), ser_obj->opt);
+       } else {
+               zend_update_property_null(ser_obj->std.ce, &ser_obj->std, ZEND_STRL("readerOptions"));
+       }
+}
+
+static inline void php_ion_unserializer_php_dtor(php_ion_unserializer_php *obj)
+{
+       if (obj->unserializer.call_custom) {
+               zend_string_release(obj->unserializer.call_custom);
+       }
+}
+
+static inline void php_ion_unserialize_zval(php_ion_unserializer *ser, zval *return_value, ION_TYPE *typ);
+
+static inline bool can_call_magic_unserialize(php_ion_unserializer *ser, zend_class_entry *ce)
+{
+       return (ce && ce->__unserialize && ser->call_magic);
 }
 
-static inline bool can_call_iface_unserialize(php_ion_reader *obj, zend_class_entry *ce)
+static inline bool can_call_iface_unserialize(php_ion_unserializer *ser, zend_class_entry *ce)
 {
-       return !!ce->unserialize;
+       return (ce && ce->unserialize);
 }
 
-static inline bool can_call_custom_unserialize(php_ion_reader *obj, zend_object *zobject, zend_function **fn)
+static inline bool can_call_custom_unserialize(php_ion_unserializer *ser, zend_object *zobject, zend_function **fn)
 {
-       if (obj->php.custom_unserialize) {
-               return !!((*fn = zend_hash_find_ptr(&zobject->ce->function_table, obj->php.custom_unserialize)));
+       if (ser->call_custom) {
+               return !!(*fn = zend_hash_find_ptr(&zobject->ce->function_table, ser->call_custom));
        }
        return false;
 }
 
-static inline zval *php_ion_unserialize_class(php_ion_reader *obj, zend_string *class_name, zval *return_value)
+static inline zval *php_ion_unserialize_class(php_ion_unserializer *ser, zval *return_value)
 {
-       zend_class_entry *ce = zend_lookup_class(class_name);
+       zend_class_entry *ce = zend_lookup_class(ser->annotations.object_class);
 
        if (ce) {
                object_init_ex(return_value, ce);
-               return zend_hash_next_index_insert(&php_ion_globals.unserializer.ids, return_value);
+               return zend_hash_next_index_insert(ser->ids, return_value);
        }
 
        zend_throw_exception_ex(spl_ce_RuntimeException, IERR_IMPORT_NOT_FOUND,
-                       "Could not find class %s", class_name->val);
+                       "Could not find class %s", ser->annotations.object_class->val);
        return NULL;
 }
 
-static inline void php_ion_unserialize_object_iface(php_ion_reader *obj, zend_string *class_name, zval *return_value)
+static inline void php_ion_unserialize_object_enum(php_ion_unserializer *ser, zval *return_value)
 {
-       ZEND_ASSERT(Z_TYPE_P(return_value) == IS_STRING);
-       zend_string *s = Z_STR_P(return_value);
-
-       zval *backref = php_ion_unserialize_class(obj, class_name, return_value);
+       zend_string *zs_case = zval_get_string(return_value);
        ION_CATCH();
 
-       zend_class_entry *ce = Z_OBJCE_P(return_value);
-       if (can_call_iface_unserialize(obj, ce)) {
+       zend_class_entry *ce = zend_lookup_class(ser->annotations.object_class);
+       if (!ce || !(ce->ce_flags & ZEND_ACC_ENUM)) {
+               zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_TOKEN,
+                               "Not a valid enum: %s", ser->annotations.object_class->val);
+               return;
+       }
+       if (!zend_hash_exists(CE_CONSTANTS_TABLE(ce), zs_case)) {
+               zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_TOKEN,
+                               "Not a valid enum case: %s::%s", ser->annotations.object_class->val, zs_case->val);
+               return;
+       }
+       RETVAL_OBJ_COPY(zend_enum_get_case(ce, zs_case));
+       zend_hash_next_index_insert(ser->ids, return_value);
+       zend_string_release(zs_case);
+}
+
+static inline void php_ion_unserialize_object_iface(php_ion_unserializer *ser, zval *return_value)
+{
+       zend_class_entry *ce = zend_lookup_class(ser->annotations.object_class);
+       if (can_call_iface_unserialize(ser, ce)) {
+               zend_string *s = zval_get_string(return_value);
+               ZVAL_NULL(return_value);
+               zval *backref = zend_hash_next_index_insert(ser->ids, return_value);
                if (SUCCESS == ce->unserialize(backref, ce, (BYTE *) s->val, s->len, NULL)) {
-                       // remove all this Serializable crap in PHP-9
-                       zval_ptr_dtor(return_value);
-                       ZVAL_COPY_VALUE(return_value, backref);
+                       RETVAL_ZVAL(backref, 0, 0);
                } else if (!EG(exception)) {
                        zend_throw_exception_ex(spl_ce_UnexpectedValueException, IERR_INTERNAL_ERROR,
                                        "Failed to unserialize class %s", ce->name->val);
                }
+               zend_string_release(s);
        } else {
                zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_TOKEN,
-                               "Class %s does not implement Serializable", class_name->val);
+                               "Class %s does not implement Serializable", ser->annotations.object_class->val);
+       }
+}
+
+static void php_ion_unserialize_props(php_ion_unserializer *ser, zval *return_value)
+{
+       zend_hash_next_index_insert(ser->ids, return_value);
+
+       ION_CHECK(ion_reader_step_in(ser->reader));
+
+       while (true) {
+               ION_TYPE typ;
+               ION_CHECK(ion_reader_next(ser->reader, &typ));
+
+               if (typ == tid_EOF) {
+                       break;
+               }
+
+               ION_STRING is;
+               ION_CHECK(ion_reader_get_field_name(ser->reader, &is));
+               zend_string *key = zend_string_from_ion(&is);
+
+               zval zvalue;
+               php_ion_unserialize_zval(ser, &zvalue, &typ);
+               ION_CATCH(zend_string_release(key));
+
+               zend_class_entry *ce = Z_OBJCE_P(return_value);
+               if (ser->annotations.object_prop && ser->annotations.property_class->val[0] != '*') {
+                       ce = zend_lookup_class(ser->annotations.property_class);
+               }
+               zend_update_property_ex(ce, Z_OBJ_P(return_value), key, &zvalue);
+               zval_ptr_dtor(&zvalue);
+               zend_string_release(key);
        }
 
-       zend_string_release(s);
+       ION_CHECK(ion_reader_step_out(ser->reader));
 }
 
-static inline void php_ion_unserialize_hash(php_ion_reader *obj, zval *return_value)
+static inline void php_ion_unserialize_hash(php_ion_unserializer *ser, zval *return_value)
 {
-       zend_hash_next_index_insert(&php_ion_globals.unserializer.ids, return_value);
+       zend_hash_next_index_insert(ser->ids, return_value);
 
-       ION_CHECK(ion_reader_step_in(obj->reader));
+       ION_CHECK(ion_reader_step_in(ser->reader));
 
        while (true) {
                ION_TYPE typ;
-               ION_CHECK(ion_reader_next(obj->reader, &typ));
+               ION_CHECK(ion_reader_next(ser->reader, &typ));
 
                ION_STRING name;
-               ION_CHECK(ion_reader_get_field_name(obj->reader, &name));
+               ION_CHECK(ion_reader_get_field_name(ser->reader, &name));
                zend_string *key = zend_string_from_ion(&name);
 
                zval zvalue;
-               php_ion_unserialize_zval(obj, &zvalue, &typ);
+               php_ion_unserialize_zval(ser, &zvalue, &typ);
                ION_CATCH(zend_string_release(key));
 
                if (typ == tid_EOF) {
@@ -1171,94 +1406,112 @@ static inline void php_ion_unserialize_hash(php_ion_reader *obj, zval *return_va
                        break;
                }
 
-               add_assoc_zval_ex(return_value, key->val, key->len, &zvalue);
+               zend_symtable_update(HASH_OF(return_value), key, &zvalue);
+
                zend_string_release(key);
        }
 
-       ION_CHECK(ion_reader_step_out(obj->reader));
+       ION_CHECK(ion_reader_step_out(ser->reader));
 }
 
-static inline void verify_unserializer(php_ion_reader *obj, uint8_t object_type,
-               zend_string *class_name, zend_object *zobject, zend_function **fn)
+static inline void verify_unserializer(php_ion_unserializer *ser, zend_object *zobject, zend_function **fn)
 {
-       switch (object_type) {
+       switch (ser->annotations.object_type) {
+       case 'c':
+               *fn = NULL;
+               break;
+
        case 'C':
-               if (!can_call_custom_unserialize(obj, zobject, fn)) {
+               if (!can_call_custom_unserialize(ser, zobject, fn)) {
                        zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_TOKEN,
-                                       "Could not find custom serializer method of %s", class_name->val);
+                                       "Could not find custom serializer method of %s", ser->annotations.object_class->val);
                }
                break;
 
        case 'O':
-               if (!can_call_magic_unserialize(obj, zobject->ce)) {
+               if (!can_call_magic_unserialize(ser, zobject->ce)) {
                        zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_TOKEN,
-                                       "Could not find method %s::__serialize()", class_name->val);
+                                       "Could not find method %s::__unserialize()", ser->annotations.object_class->val);
                }
                *fn = zobject->ce->__unserialize;
                break;
 
        default:
                zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_TOKEN,
-                               "Invalid object type %c", object_type);
+                               "Invalid object type %c", ser->annotations.object_type);
        }
 }
-static inline void php_ion_unserialize_object(php_ion_reader *obj, uint8_t object_type, zend_string *class_name, zval *return_value)
+
+static inline void php_ion_unserialize_object(php_ion_unserializer *ser, zval *return_value)
 {
        // backup possible backref to array returned by magic/custom __serialize()
-       zval zarr;
-       ZVAL_COPY_VALUE(&zarr, return_value);
-       zend_hash_next_index_insert(&php_ion_globals.unserializer.tmp, &zarr);
+       zval *input = zend_hash_next_index_insert(ser->tmp, return_value);
 
-       php_ion_unserialize_class(obj, class_name, return_value);
+       php_ion_unserialize_class(ser, return_value);
        ION_CATCH();
 
-       zend_object *zobject = Z_OBJ_P(return_value);
        zend_function *fn = NULL;
-       verify_unserializer(obj, object_type, class_name, zobject, &fn);
+       zend_object *zobject = Z_OBJ_P(return_value);
+       verify_unserializer(ser, zobject, &fn);
        ION_CATCH();
 
-       if (Z_TYPE(zarr) != IS_ARRAY) {
-               ZEND_ASSERT(Z_TYPE(zarr) != IS_OBJECT);
-               array_init(&zarr);
-               zend_hash_next_index_insert(&php_ion_globals.unserializer.tmp, &zarr);
-               php_ion_unserialize_hash(obj, &zarr);
-               ION_CATCH();
+       // plain object
+       if (!fn) {
+               php_ion_unserialize_props(ser, return_value);
+               return;
        }
 
+       // magic object
+       if (Z_TYPE_P(input) != IS_ARRAY) {
+               zval_ptr_dtor(input);
+               array_init(input);
+               zend_hash_real_init_mixed(Z_ARRVAL_P(input));
+               php_ion_unserialize_hash(ser, input);
+               ION_CATCH();
+       }
        zval rv;
        ZVAL_NULL(&rv);
-       zend_call_method_with_1_params(zobject, zobject->ce, &fn, "", &rv, &zarr);
+       zend_call_method_with_1_params(zobject, zobject->ce, &fn, "", &rv, input);
        zval_ptr_dtor(&rv);
 }
 
-static inline void php_ion_unserialize_struct(php_ion_reader *obj, uint8_t object_type, zend_string *class_name, zval *return_value)
+static inline void php_ion_unserialize_struct(php_ion_unserializer *ser, zval *return_value)
 {
-       if (class_name) {
-               php_ion_unserialize_object(obj, object_type, class_name, return_value);
-       } else if (!object_type) {
+       if (ser->annotations.object_class) {
+               switch (ser->annotations.object_type) {
+               case 'S':
+                       php_ion_unserialize_object_iface(ser, return_value);
+                       break;
+               case 'E':
+                       php_ion_unserialize_object_enum(ser, return_value);
+                       break;
+               default:
+                       php_ion_unserialize_object(ser, return_value);
+               }
+       } else if (!ser->annotations.object_type) {
                array_init(return_value);
-               php_ion_unserialize_hash(obj, return_value);
-       } else if (object_type == 'o') {
+               php_ion_unserialize_hash(ser, return_value);
+       } else if (ser->annotations.object_type == 'o') {
                object_init(return_value);
-               php_ion_unserialize_hash(obj, return_value);
+               php_ion_unserialize_hash(ser, return_value);
        } else {
                zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_TOKEN,
-                               "Invalid object type %c", object_type);
+                               "Invalid object annotation %c::", ser->annotations.object_type);
        }
 }
 
-static inline void php_ion_unserialize_list(php_ion_reader *obj, zval *return_value)
+static inline void php_ion_unserialize_list(php_ion_unserializer *ser, zval *return_value)
 {
-       ION_CHECK(ion_reader_step_in(obj->reader));
+       ION_CHECK(ion_reader_step_in(ser->reader));
        array_init(return_value);
-       zend_hash_next_index_insert(&php_ion_globals.unserializer.ids, return_value);
+       zend_hash_next_index_insert(ser->ids, return_value);
 
        while (true) {
                ION_TYPE typ;
-               ION_CHECK(ion_reader_next(obj->reader, &typ));
+               ION_CHECK(ion_reader_next(ser->reader, &typ));
 
                zval next;
-               php_ion_unserialize_zval(obj, &next, &typ);
+               php_ion_unserialize_zval(ser, &next, &typ);
                ION_CATCH();
 
                if (typ == tid_EOF) {
@@ -1268,15 +1521,15 @@ static inline void php_ion_unserialize_list(php_ion_reader *obj, zval *return_va
                zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &next);
        }
 
-       ION_CHECK(ion_reader_step_out(obj->reader));
+       ION_CHECK(ion_reader_step_out(ser->reader));
 }
 
-static inline void php_ion_unserialize_lob(php_ion_reader *obj, zval *return_value)
+static inline void php_ion_reader_read_lob(ION_READER *reader, zval *return_value)
 {
        zend_string *zstr = zend_string_alloc(0x1000, 0);
 again:
        SIZE read = 0;
-       iERR err = ion_reader_read_lob_bytes(obj->reader, (BYTE *) zstr->val, zstr->len, &read);
+       iERR err = ion_reader_read_lob_bytes(reader, (BYTE *) zstr->val, zstr->len, &read);
        if (err == IERR_BUFFER_TOO_SMALL) {
                zstr = zend_string_extend(zstr, zstr->len << 2, 0);
                goto again;
@@ -1288,20 +1541,16 @@ again:
        RETURN_STR(zstr);
 }
 
-static inline void php_ion_unserialize_timestamp(php_ion_reader *obj, zval *return_value)
+static inline void php_ion_reader_read_timestamp(ION_READER *reader, ION_READER_OPTIONS *opt, zval *return_value)
 {
        ION_TIMESTAMP ts;
-       ION_CHECK(ion_reader_read_timestamp(obj->reader, &ts));
-
-       decContext *ctx = NULL;
-       if (obj->opt) {
-               ctx = php_ion_obj(reader_options, obj->opt)->opt.decimal_context;
-       }
+       ION_CHECK(ion_reader_read_timestamp(reader, &ts));
 
        object_init_ex(return_value, ce_Timestamp);
        php_ion_timestamp *ts_obj = php_ion_obj(timestamp, Z_OBJ_P(return_value));
 
        zend_string *fmt = NULL;
+       decContext *ctx = opt ? opt->decimal_context : NULL;
        ts_obj->time = php_time_from_ion(&ts, ctx, &fmt);
        php_ion_timestamp_ctor(ts_obj, ts.precision, fmt, NULL, NULL);
        zend_string_release(fmt);
@@ -1309,11 +1558,11 @@ static inline void php_ion_unserialize_timestamp(php_ion_reader *obj, zval *retu
        OBJ_CHECK(ts_obj);
 }
 
-static inline void php_ion_unserialize_int(php_ion_reader *obj, zval *return_value)
+static inline void php_ion_reader_read_int(ION_READER *reader, zval *return_value)
 {
        ION_INT *num = NULL;
-       ION_CHECK(ion_int_alloc(obj->reader, &num));
-       ION_CHECK(ion_reader_read_ion_int(obj->reader, num));
+       ION_CHECK(ion_int_alloc(reader, &num));
+       ION_CHECK(ion_reader_read_ion_int(reader, num));
 
        // TODO: SIZEOF_ZEND_LONG == 4
        int64_t i64;
@@ -1340,70 +1589,123 @@ static inline void php_ion_unserialize_int(php_ion_reader *obj, zval *return_val
        }
 }
 
-static inline void php_ion_unserialize_backref(php_ion_reader *obj, zval *return_value)
+static inline void php_ion_unserialize_backref(php_ion_unserializer *ser, zval *return_value)
 {
-       php_ion_global_unserializer *u = &php_ion_globals.unserializer;
-       zval *backref = zend_hash_index_find(&u->ids, Z_LVAL_P(return_value));
+       zval *backref = zend_hash_index_find(ser->ids, Z_LVAL_P(return_value));
 
        if (backref) {
                ZVAL_COPY_VALUE(return_value, backref);
-               zend_hash_next_index_insert(&u->addref, return_value);
+               zend_hash_next_index_insert(ser->addref, return_value);
        } else {
                zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INTERNAL_ERROR,
-                               "Could not find backref %ld", Z_LVAL_P(return_value));
+                               "Could not find back reference %ld", Z_LVAL_P(return_value));
        }
 }
 
-static inline void php_ion_unserialize_zval(php_ion_reader *obj, zval *return_value, ION_TYPE *typ)
+static inline void php_ion_unserialize_annotations(php_ion_unserializer *ser)
 {
-       ION_TYPE typ_tmp;
-       if (!typ) {
-               typ = &typ_tmp;
-               ION_CHECK(ion_reader_next(obj->reader, typ));
-       }
+       memset(&ser->annotations, 0, sizeof(ser->annotations));
 
-       // process any annotations
-       bool backref = false;
-       uint8_t object_type = 0;
-       zend_string *object_class = NULL;
        int32_t ann_cnt;
-       ION_CHECK(ion_reader_get_annotation_count(obj->reader, &ann_cnt));
+       ION_CHECK(ion_reader_get_annotation_count(ser->reader, &ann_cnt));
        for (int32_t i = 0; i < ann_cnt; ++i) {
                ION_STRING ann_str;
-               ION_CHECK(ion_reader_get_an_annotation(obj->reader, i, &ann_str));
+               ION_CHECK(ion_reader_get_an_annotation(ser->reader, i, &ann_str));
+
                switch (*ann_str.value) {
                case 'R':
-                       ZVAL_MAKE_REF(return_value);
-                       ZVAL_DEREF(return_value);
-                       zend_hash_next_index_insert(&php_ion_globals.unserializer.addref, return_value);
+                       if (ser->annotations.makeref) {
+                               zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_SYNTAX,
+                                               "Invalid multiple reference annotations");
+                               return;
+                       }
+                       ser->annotations.makeref = true;
                        break;
 
                case 'r':
-                       // ints
-                       backref = true;
+                       if (ser->annotations.backref) {
+                               zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_SYNTAX,
+                                               "Invalid multiple back reference annotations");
+                               return;
+                       }
+                       ser->annotations.backref = true;
                        break;
 
-               case 'S':
-               case 'E':
-                       // strings
-                       object_type = *ann_str.value;
+               case 'p':
+                       if (ser->annotations.object_prop) {
+                               zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_SYNTAX,
+                                               "Invalid multiple object property annotations");
+                               return;
+                       }
+                       ser->annotations.object_prop = true;
+
+                       ION_STRING prop_class;
+                       ION_CHECK(ion_reader_get_an_annotation(ser->reader, ++i, &prop_class));
+                       ser->annotations.property_class = zend_string_from_ion(&prop_class);
+
+                       zval zptmp;
+                       ZVAL_STR(&zptmp, ser->annotations.property_class);
+                       zend_hash_next_index_insert(ser->tmp, &zptmp);
                        break;
 
+               case 'E':
+               case 'S':
                case 'O':
                case 'C':
                case 'o':
                case 'c':
-                       // structs
-                       ION_STRING class_name;
-                       ION_CHECK(ion_reader_get_an_annotation(obj->reader, ++i, &class_name));
-                       object_class = zend_string_from_ion(&class_name);
-                       object_type = *ann_str.value;
+                       if (ser->annotations.object_type) {
+                               zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_SYNTAX,
+                                               "Invalid multiple object type annotations: %c::%c",
+                                               ser->annotations.object_type, *ann_str.value);
+                               return;
+                       }
+                       if ('o' != (ser->annotations.object_type = *ann_str.value)) {
+                               ION_STRING class_name;
+                               ION_CHECK(ion_reader_get_an_annotation(ser->reader, ++i, &class_name));
+                               ser->annotations.object_class = zend_string_from_ion(&class_name);
+
+                               zval zctmp;
+                               ZVAL_STR(&zctmp, ser->annotations.object_class);
+                               zend_hash_next_index_insert(ser->tmp, &zctmp);
+                       }
                        break;
                }
+
+               // sanity checks
+               if (ser->annotations.object_type && ser->annotations.object_type != 'o' && !ser->annotations.object_class) {
+                       zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_SYNTAX,
+                                       "Invalid object annotation without class name: %c::", ser->annotations.object_type);
+                       return;
+               }
+               if (ser->annotations.object_type == 'o' && ser->annotations.object_class) {
+                       zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_SYNTAX,
+                                       "Invalid object annotation with class name: o::%s", ser->annotations.object_class->val);
+                       return;
+               }
+       }
+}
+
+static inline void php_ion_unserialize_zval(php_ion_unserializer *ser, zval *return_value, ION_TYPE *typ)
+{
+       if (typ) {
+               memcpy(&ser->type, typ, sizeof(ser->type));
+       } else {
+               typ = &ser->type;
+               ION_CHECK(ion_reader_next(ser->reader, typ));
+       }
+
+       php_ion_unserialize_annotations(ser);
+       ION_CATCH();
+
+       if (ser->annotations.makeref) {
+               ZVAL_MAKE_REF(return_value);
+               zend_hash_next_index_insert(ser->ids, return_value);
+               ZVAL_DEREF(return_value);
        }
 
        BOOL bval;
-       ION_CHECK(ion_reader_is_null(obj->reader, &bval));
+       ION_CHECK(ion_reader_is_null(ser->reader, &bval));
        if (bval) {
                goto read_null;
        }
@@ -1411,103 +1713,91 @@ static inline void php_ion_unserialize_zval(php_ion_reader *obj, zval *return_va
        switch (ION_TYPE_INT(*typ)) {
        case tid_NULL_INT:
 read_null: ;
-               ION_CHECK(ion_reader_read_null(obj->reader, typ));
+               ION_CHECK(ion_reader_read_null(ser->reader, typ));
                RETURN_NULL();
 
        case tid_BOOL_INT:
-               ION_CHECK(ion_reader_read_bool(obj->reader, &bval));
+               ION_CHECK(ion_reader_read_bool(ser->reader, &bval));
                RETURN_BOOL(bval);
 
        case tid_INT_INT:
-               php_ion_unserialize_int(obj, return_value);
-               if (backref) {
+               php_ion_reader_read_int(ser->reader, return_value);
+               if (ser->annotations.backref) {
                        ION_CATCH();
-                       php_ion_unserialize_backref(obj, return_value);
-                       switch (object_type) {
-                       case 0:
-                               break;
-                       case 'S':
-                       case 'E':
-                               ION_CATCH();
-                               goto from_backref_to_string;
-                       case 'c':
-                       case 'C':
-                       case 'o':
-                       case 'O':
-                               ION_CATCH();
-                               goto from_backref_to_struct;
-                       default:
-                               ZEND_ASSERT(0);
+                       php_ion_unserialize_backref(ser, return_value);
+               }
+               if (ser->annotations.object_type) {
+                       if (!ser->annotations.backref) {
+                               zend_throw_exception_ex(spl_ce_RuntimeException, IERR_INVALID_SYNTAX,
+                                               "Invalid object type annotation: %c::" ZEND_LONG_FMT,
+                                               ser->annotations.object_type, Z_LVAL_P(return_value));
+                               return;
                        }
+                       goto unserialize_struct;
                }
                return;
 
        case tid_FLOAT_INT:
                double d;
-               ION_CHECK(ion_reader_read_double(obj->reader, &d));
+               ION_CHECK(ion_reader_read_double(ser->reader, &d));
                RETURN_DOUBLE(d);
 
        case tid_DECIMAL_INT:
                object_init_ex(return_value, ce_Decimal);
                php_ion_decimal *dec = php_ion_obj(decimal, Z_OBJ_P(return_value));
-               ION_CHECK(ion_reader_read_ion_decimal(obj->reader, &dec->dec));
+               ION_CHECK(ion_reader_read_ion_decimal(ser->reader, &dec->dec));
                php_ion_decimal_ctor(dec);
-               zend_hash_next_index_insert(&php_ion_globals.unserializer.ids, return_value);
+               zend_hash_next_index_insert(ser->ids, return_value);
                return;
 
        case tid_TIMESTAMP_INT:
-               php_ion_unserialize_timestamp(obj, return_value);
-               zend_hash_next_index_insert(&php_ion_globals.unserializer.ids, return_value);
+               php_ion_reader_read_timestamp(ser->reader, ser->options, return_value);
+               zend_hash_next_index_insert(ser->ids, return_value);
                return;
 
        case tid_SYMBOL_INT:
                ION_SYMBOL sym;
-               ION_CHECK(ion_reader_read_ion_symbol(obj->reader, &sym));
+               ION_CHECK(ion_reader_read_ion_symbol(ser->reader, &sym));
                php_ion_symbol_zval(&sym, return_value);
-               zend_hash_next_index_insert(&php_ion_globals.unserializer.ids, return_value);
+               if (ser->annotations.object_type) {
+                       zend_hash_next_index_insert(ser->tmp, return_value);
+                       goto unserialize_struct;
+               }
+               zend_hash_next_index_insert(ser->ids, return_value);
                return;
 
        case tid_STRING_INT:
                ION_STRING str;
-               ION_CHECK(ion_reader_read_string(obj->reader, &str));
+               ION_CHECK(ion_reader_read_string(ser->reader, &str));
                RETVAL_STRINGL((char *) str.value, str.length);
-               if (object_type) {
-from_backref_to_string: ;
-                       zend_hash_next_index_insert(&php_ion_globals.unserializer.tmp, return_value);
-                       switch (object_type) {
-                       case 'S':
-                               php_ion_unserialize_object_iface(obj, object_class, return_value);
-                               return;
-                       case 'E':
-                               // TODO
-                               return;
-                       default:
-                               ZEND_ASSERT(0);
-                       }
+               if (ser->annotations.object_type) {
+                       zend_hash_next_index_insert(ser->tmp, return_value);
+                       goto unserialize_struct;
                }
-               zend_hash_next_index_insert(&php_ion_globals.unserializer.ids, return_value);
+               zend_hash_next_index_insert(ser->ids, return_value);
                return;
 
        case tid_CLOB_INT:
        case tid_BLOB_INT:
-               php_ion_unserialize_lob(obj, return_value);
-               zend_hash_next_index_insert(&php_ion_globals.unserializer.ids, return_value);
+               php_ion_reader_read_lob(ser->reader, return_value);
+               if (ser->annotations.object_type) {
+                       zend_hash_next_index_insert(ser->tmp, return_value);
+                       goto unserialize_struct;
+               }
+               zend_hash_next_index_insert(ser->ids, return_value);
                return;
 
        case tid_LIST_INT:
        case tid_SEXP_INT: // FIXME
-               php_ion_unserialize_list(obj, return_value);
-               if (!object_type) {
+               php_ion_unserialize_list(ser, return_value);
+               if (!ser->annotations.object_type) {
                        return;
                }
                /* fall through */
 
        case tid_STRUCT_INT:
-from_backref_to_struct: ;
-               php_ion_unserialize_struct(obj, object_type, object_class, return_value);
-               if (object_class) {
-                       zend_string_release(object_class);
-               }
+unserialize_struct: ;
+               php_ion_unserialize_struct(ser, return_value);
                return;
 
        case tid_none_INT:
@@ -1521,23 +1811,61 @@ from_backref_to_struct: ;
        }
 }
 
-void php_ion_unserialize(php_ion_reader *obj, zend_string *zstr, zval *return_value)
+php_ion_decl(unserializer_php, Unserializer_PHP, php_ion_unserializer_php_dtor(obj));
+
+void php_ion_unserialize(php_ion_unserializer *ser, zval *zdata, zval *return_value)
 {
-       zval zreader;
+       zend_object *zo_opt = NULL, *zo_ser = NULL;
 
-       if (obj) {
-               ZVAL_OBJ_COPY(&zreader, &obj->std);
-       } else {
-               object_init_ex(&zreader, ce_Reader_Buffer_Reader);
-               obj = php_ion_obj(reader, Z_OBJ(zreader));
-               obj->type = BUFFER_READER;
-               obj->buffer = zend_string_copy(zstr);
-               php_ion_reader_ctor(obj);
+       if (!ser) {
+               zo_ser = create_ion_Unserializer_PHP(NULL);
+               php_ion_unserializer_php *o_ser = php_ion_obj(unserializer_php, zo_ser);
+               PTR_CHECK(o_ser);
+               o_ser->unserializer.call_magic = true;
+               php_ion_unserializer_php_ctor(o_ser);
+               ION_CATCH();
+               ser = &o_ser->unserializer;
+       }
+
+       zend_object *zo_reader;
+       php_ion_reader *reader;
+       ZVAL_DEREF(zdata);
+       switch (Z_TYPE_P(zdata)) {
+       case IS_STRING:
+               zo_reader = create_ion_Reader_Reader(ce_Reader_Buffer_Reader);
+               reader = php_ion_obj(reader, zo_reader);
+               reader->type = BUFFER_READER;
+               reader->buffer = zend_string_copy(Z_STR_P(zdata));
+               break;
+
+       case IS_RESOURCE:
+               zo_reader = create_ion_Reader_Reader(ce_Reader_Stream_Reader);
+               reader = php_ion_obj(reader, zo_reader);
+               reader->type = STREAM_READER;
+               php_stream_from_zval_no_verify(reader->stream.ptr, zdata);
+               break;
+
+       default:
+               ZEND_ASSERT(!IS_STRING && !IS_RESOURCE);
+       }
+
+       if (ser->options) {
+               zo_opt = reader->opt = create_ion_Reader_Options(NULL);
+               php_ion_obj(reader_options, reader->opt)->opt = *ser->options;
        }
 
+       php_ion_reader_ctor(reader);
+       ser->reader = reader->reader;
+
        php_ion_globals_unserializer_step();
-       php_ion_unserialize_zval(obj, return_value, NULL);
+       php_ion_unserialize_zval(ser, return_value, NULL);
        php_ion_globals_unserializer_exit();
 
-       zval_ptr_dtor(&zreader);
+       OBJ_RELEASE(zo_reader);
+       if (zo_opt)  {
+               OBJ_RELEASE(zo_opt);
+       }
+       if (zo_ser) {
+               OBJ_RELEASE(zo_ser);
+       }
 }