From 3c62b3b5ac8ab53b4133281e389bf990d9a30ead Mon Sep 17 00:00:00 2001 From: Marcus Boerger Date: Wed, 22 Oct 2003 19:59:58 +0000 Subject: [PATCH] Expand Interface C API. In short: zend_class_entry->interface_gets_implemented() allows to modify the class entry of a class when an interface gets implemented. --- Zend/zend.h | 1 + Zend/zend_API.c | 45 +++++++++++++++++++++++++-------------- Zend/zend_API.h | 2 ++ Zend/zend_compile.c | 52 ++++++++++++++++++++++++++++++++++----------- Zend/zend_compile.h | 6 +++--- Zend/zend_execute.c | 2 +- 6 files changed, 76 insertions(+), 32 deletions(-) diff --git a/Zend/zend.h b/Zend/zend.h index 4317f75373..f63ab21a2a 100644 --- a/Zend/zend.h +++ b/Zend/zend.h @@ -338,6 +338,7 @@ struct _zend_class_entry { /* handlers */ zend_object_value (*create_object)(zend_class_entry *class_type TSRMLS_DC); zend_object_iterator *(*get_iterator)(zend_class_entry *ce, zval *object TSRMLS_DC); + int (*interface_gets_implemented)(zend_class_entry *iface, zend_class_entry *class_type TSRMLS_DC); /* a class implements this interface */ zend_class_entry **interfaces; zend_uint num_interfaces; diff --git a/Zend/zend_API.c b/Zend/zend_API.c index d5d8676292..f9a868ddda 100644 --- a/Zend/zend_API.c +++ b/Zend/zend_API.c @@ -1419,6 +1419,26 @@ int zend_next_free_module(void) return ++module_count; } +static zend_class_entry *do_register_internal_class(zend_class_entry *orig_class_entry, zend_uint ce_flags TSRMLS_DC) +{ + zend_class_entry *class_entry = malloc(sizeof(zend_class_entry)); + char *lowercase_name = malloc(orig_class_entry->name_length + 1); + *class_entry = *orig_class_entry; + + class_entry->type = ZEND_INTERNAL_CLASS; + zend_initialize_class_data(class_entry, 0 TSRMLS_CC); + class_entry->ce_flags = ce_flags; + + if (class_entry->builtin_functions) { + zend_register_functions(class_entry, class_entry->builtin_functions, &class_entry->function_table, MODULE_PERSISTENT TSRMLS_CC); + } + + zend_str_tolower_copy(lowercase_name, orig_class_entry->name, class_entry->name_length); + zend_hash_update(CG(class_table), lowercase_name, class_entry->name_length+1, &class_entry, sizeof(zend_class_entry *), NULL); + free(lowercase_name); + return class_entry; +} + /* If parent_ce is not NULL then it inherits from parent_ce * If parent_ce is NULL and parent_name isn't then it looks for the parent and inherits from it * If both parent_ce and parent_name are NULL it does a regular class registration @@ -1440,7 +1460,7 @@ ZEND_API zend_class_entry *zend_register_internal_class_ex(zend_class_entry *cla register_class = zend_register_internal_class(class_entry TSRMLS_CC); if (parent_ce) { - zend_do_inheritance(register_class, parent_ce); + zend_do_inheritance(register_class, parent_ce TSRMLS_CC); } return register_class; } @@ -1460,28 +1480,21 @@ ZEND_API void zend_class_implements(zend_class_entry *class_entry TSRMLS_DC, int while (num_interfaces--) { interface_entry = va_arg(interface_list, zend_class_entry *); class_entry->interfaces[class_entry->num_interfaces++] = interface_entry; - zend_do_implement_interface(class_entry, interface_entry); + zend_do_implement_interface(class_entry, interface_entry TSRMLS_CC); } va_end(interface_list); } +/* A class that contains at least one abstract method automatically becomes an abstract class. + */ ZEND_API zend_class_entry *zend_register_internal_class(zend_class_entry *orig_class_entry TSRMLS_DC) { - zend_class_entry *class_entry = malloc(sizeof(zend_class_entry)); - char *lowercase_name = malloc(orig_class_entry->name_length + 1); - *class_entry = *orig_class_entry; - - class_entry->type = ZEND_INTERNAL_CLASS; - zend_initialize_class_data(class_entry, 0 TSRMLS_CC); - - if (class_entry->builtin_functions) { - zend_register_functions(class_entry, class_entry->builtin_functions, &class_entry->function_table, MODULE_PERSISTENT TSRMLS_CC); - } + return do_register_internal_class(orig_class_entry, 0 TSRMLS_CC); +} - zend_str_tolower_copy(lowercase_name, orig_class_entry->name, class_entry->name_length); - zend_hash_update(CG(class_table), lowercase_name, class_entry->name_length+1, &class_entry, sizeof(zend_class_entry *), NULL); - free(lowercase_name); - return class_entry; +ZEND_API zend_class_entry *zend_register_internal_interface(zend_class_entry *orig_class_entry TSRMLS_DC) +{ + return do_register_internal_class(orig_class_entry, ZEND_ACC_ABSTRACT|ZEND_ACC_INTERFACE TSRMLS_CC); } ZEND_API int zend_set_hash_symbol(zval *symbol, char *name, int name_length, diff --git a/Zend/zend_API.h b/Zend/zend_API.h index d7b9a44390..0b079bbfb8 100644 --- a/Zend/zend_API.h +++ b/Zend/zend_API.h @@ -121,6 +121,7 @@ typedef struct _zend_function_entry { class_container.destructor = NULL; \ class_container.clone = NULL; \ class_container.create_object = NULL; \ + class_container.interface_gets_implemented = NULL; \ class_container.__call = handle_fcall; \ class_container.__get = handle_propget; \ class_container.__set = handle_propset; \ @@ -160,6 +161,7 @@ ZEND_API int zend_register_module(zend_module_entry *module_entry); ZEND_API zend_class_entry *zend_register_internal_class(zend_class_entry *class_entry TSRMLS_DC); ZEND_API zend_class_entry *zend_register_internal_class_ex(zend_class_entry *class_entry, zend_class_entry *parent_ce, char *parent_name TSRMLS_DC); +ZEND_API zend_class_entry *zend_register_internal_interface(zend_class_entry *orig_class_entry TSRMLS_DC); ZEND_API void zend_class_implements(zend_class_entry *class_entry TSRMLS_DC, int num_interfaces, ...); ZEND_API int zend_disable_function(char *function_name, uint function_name_length TSRMLS_DC); diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c index f0e73b3e07..bd3d16c0b5 100644 --- a/Zend/zend_compile.c +++ b/Zend/zend_compile.c @@ -1832,18 +1832,45 @@ static zend_bool do_inherit_property_access_check(HashTable *target_ht, zend_pro } -ZEND_API void zend_do_inherit_interfaces(zend_class_entry *ce, zend_class_entry *ce2) +static inline void do_implement_interface(zend_class_entry *ce, zend_class_entry *iface TSRMLS_DC) { - int num = ce2->num_interfaces; + if (!(ce->ce_flags & ZEND_ACC_ABSTRACT) && iface->interface_gets_implemented && iface->interface_gets_implemented(iface, ce TSRMLS_CC) == FAILURE) { + zend_error(E_CORE_ERROR, "Class %s could not implement interface %s", ce->name, iface->name); + } +} - if (num) { + +ZEND_API void zend_do_inherit_interfaces(zend_class_entry *ce, zend_class_entry *iface TSRMLS_DC) +{ + /* expects interface to be contained in ce's interface list already */ + int i, ce_num, if_num = iface->num_interfaces; + zend_class_entry *entry; + + if (if_num) { + ce_num = ce->num_interfaces; if (ce->type == ZEND_INTERNAL_CLASS) { - ce->interfaces = (zend_class_entry **) realloc(ce->interfaces, sizeof(zend_class_entry *) * (ce->num_interfaces + num)); + ce->interfaces = (zend_class_entry **) realloc(ce->interfaces, sizeof(zend_class_entry *) * (ce_num + if_num)); } else { - ce->interfaces = (zend_class_entry **) erealloc(ce->interfaces, sizeof(zend_class_entry *) * (ce->num_interfaces + num)); + ce->interfaces = (zend_class_entry **) erealloc(ce->interfaces, sizeof(zend_class_entry *) * (ce_num + if_num)); + } + + /* only have every interface ones - this holds for the list we append too, what makes the test a bit faster */ + while (if_num--) { + entry = iface->interfaces[if_num]; + for (i = 0; i < ce_num; ++i) { + if (ce->interfaces[i] == entry) { + break; + } + } + if (i == ce_num) { + ce->interfaces[ce->num_interfaces++] = entry; + } + } + + /* and now call the implementing handlers */ + while (ce_num < ce->num_interfaces) { + do_implement_interface(ce, ce->interfaces[ce_num++] TSRMLS_CC); } - memcpy(&ce->interfaces[ce->num_interfaces], ce2->interfaces, num * sizeof(zend_class_entry*)); - ce->num_interfaces += num; } } @@ -1855,7 +1882,7 @@ static void inherit_sttaic_prop(zval **p) } -void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce) +void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce TSRMLS_DC) { if ((ce->ce_flags & ZEND_ACC_INTERFACE) && !(parent_ce->ce_flags & ZEND_ACC_INTERFACE)) { @@ -1867,7 +1894,7 @@ void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce) ce->parent = parent_ce; /* Inherit interfaces */ - zend_do_inherit_interfaces(ce, parent_ce); + zend_do_inherit_interfaces(ce, parent_ce TSRMLS_CC); /* Inherit properties */ zend_hash_merge(&ce->default_properties, &parent_ce->default_properties, (void (*)(void *)) zval_add_ref, NULL, sizeof(zval *), 0); @@ -1880,12 +1907,13 @@ void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce) } -ZEND_API void zend_do_implement_interface(zend_class_entry *ce, zend_class_entry *iface) +ZEND_API void zend_do_implement_interface(zend_class_entry *ce, zend_class_entry *iface TSRMLS_DC) { zend_hash_merge(&ce->constants_table, &iface->constants_table, (void (*)(void *)) zval_add_ref, NULL, sizeof(zval *), 0); zend_hash_merge_ex(&ce->function_table, &iface->function_table, (copy_ctor_func_t) do_inherit_method, sizeof(zend_function), (merge_checker_func_t) do_inherit_method_check, ce); - zend_do_inherit_interfaces(ce, iface); + do_implement_interface(ce, iface TSRMLS_CC); + zend_do_inherit_interfaces(ce, iface TSRMLS_CC); } @@ -1955,7 +1983,7 @@ ZEND_API zend_class_entry *do_bind_inherited_class(zend_op *opline, HashTable *f ce = *pce; } - zend_do_inheritance(ce, parent_ce); + zend_do_inheritance(ce, parent_ce TSRMLS_CC); ce->refcount++; diff --git a/Zend/zend_compile.h b/Zend/zend_compile.h index 16c0141f17..43f9524025 100644 --- a/Zend/zend_compile.h +++ b/Zend/zend_compile.h @@ -356,11 +356,11 @@ void zend_do_throw(znode *expr TSRMLS_DC); ZEND_API int do_bind_function(zend_op *opline, HashTable *function_table, HashTable *class_table, int compile_time); ZEND_API zend_class_entry *do_bind_class(zend_op *opline, HashTable *function_table, HashTable *class_table TSRMLS_DC); ZEND_API zend_class_entry *do_bind_inherited_class(zend_op *opline, HashTable *function_table, HashTable *class_table, zend_class_entry *parent_ce TSRMLS_DC); -ZEND_API void zend_do_inherit_interfaces(zend_class_entry *ce, zend_class_entry *ce2); -ZEND_API void zend_do_implement_interface(zend_class_entry *ce, zend_class_entry *iface); +ZEND_API void zend_do_inherit_interfaces(zend_class_entry *ce, zend_class_entry *iface TSRMLS_DC); +ZEND_API void zend_do_implement_interface(zend_class_entry *ce, zend_class_entry *iface TSRMLS_DC); void zend_do_implements_interface(znode *interface_znode TSRMLS_DC); -void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce); +void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce TSRMLS_DC); void zend_do_early_binding(TSRMLS_D); void zend_do_pass_param(znode *param, zend_uchar op, int offset TSRMLS_DC); diff --git a/Zend/zend_execute.c b/Zend/zend_execute.c index fae7e65de3..1bbd28108d 100644 --- a/Zend/zend_execute.c +++ b/Zend/zend_execute.c @@ -4010,7 +4010,7 @@ int zend_add_interface_handler(ZEND_OPCODE_HANDLER_ARGS) ce->interfaces[EX(opline)->extended_value] = iface; - zend_do_implement_interface(ce, iface); + zend_do_implement_interface(ce, iface TSRMLS_CC); NEXT_OPCODE(); } -- 2.40.0