mirror of
https://github.com/php/php-src.git
synced 2024-12-13 03:44:17 +08:00
1637 lines
59 KiB
C
1637 lines
59 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
|
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| Copyright (c) 1998-2015 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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#include "zend.h"
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#include "zend_API.h"
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#include "zend_compile.h"
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#include "zend_execute.h"
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#include "zend_inheritance.h"
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#include "zend_smart_str.h"
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static void ptr_dtor(zval *zv) /* {{{ */
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{
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efree(Z_PTR_P(zv));
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}
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/* }}} */
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static zend_property_info *zend_duplicate_property_info(zend_property_info *property_info) /* {{{ */
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{
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zend_property_info* new_property_info;
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new_property_info = zend_arena_alloc(&CG(arena), sizeof(zend_property_info));
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memcpy(new_property_info, property_info, sizeof(zend_property_info));
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zend_string_addref(new_property_info->name);
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if (new_property_info->doc_comment) {
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zend_string_addref(new_property_info->doc_comment);
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}
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return new_property_info;
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}
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/* }}} */
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static zend_property_info *zend_duplicate_property_info_internal(zend_property_info *property_info) /* {{{ */
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{
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zend_property_info* new_property_info = pemalloc(sizeof(zend_property_info), 1);
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memcpy(new_property_info, property_info, sizeof(zend_property_info));
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zend_string_addref(new_property_info->name);
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return new_property_info;
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}
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/* }}} */
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|
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static void do_inherit_parent_constructor(zend_class_entry *ce) /* {{{ */
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{
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zend_function *function, *new_function;
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|
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if (!ce->parent) {
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return;
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}
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|
|
/* You cannot change create_object */
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ce->create_object = ce->parent->create_object;
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|
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/* Inherit special functions if needed */
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if (!ce->get_iterator) {
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ce->get_iterator = ce->parent->get_iterator;
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}
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if (!ce->iterator_funcs.funcs) {
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ce->iterator_funcs.funcs = ce->parent->iterator_funcs.funcs;
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}
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if (!ce->__get) {
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ce->__get = ce->parent->__get;
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}
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if (!ce->__set) {
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ce->__set = ce->parent->__set;
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}
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if (!ce->__unset) {
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ce->__unset = ce->parent->__unset;
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}
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if (!ce->__isset) {
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ce->__isset = ce->parent->__isset;
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}
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if (!ce->__call) {
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ce->__call = ce->parent->__call;
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}
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if (!ce->__callstatic) {
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ce->__callstatic = ce->parent->__callstatic;
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}
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if (!ce->__tostring) {
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ce->__tostring = ce->parent->__tostring;
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}
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if (!ce->clone) {
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ce->clone = ce->parent->clone;
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}
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if(!ce->serialize) {
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ce->serialize = ce->parent->serialize;
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}
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if(!ce->unserialize) {
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ce->unserialize = ce->parent->unserialize;
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}
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if (!ce->destructor) {
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ce->destructor = ce->parent->destructor;
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}
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if (!ce->__debugInfo) {
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ce->__debugInfo = ce->parent->__debugInfo;
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}
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if (ce->constructor) {
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if (ce->parent->constructor && ce->parent->constructor->common.fn_flags & ZEND_ACC_FINAL) {
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zend_error(E_ERROR, "Cannot override final %s::%s() with %s::%s()",
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ce->parent->name->val, ce->parent->constructor->common.function_name->val,
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ce->name->val, ce->constructor->common.function_name->val
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);
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}
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return;
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}
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if ((function = zend_hash_str_find_ptr(&ce->parent->function_table, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME)-1)) != NULL) {
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/* inherit parent's constructor */
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if (function->type == ZEND_INTERNAL_FUNCTION) {
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if (ce->type & ZEND_INTERNAL_CLASS) {
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new_function = pemalloc(sizeof(zend_internal_function), 1);
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memcpy(new_function, function, sizeof(zend_internal_function));
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} else {
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new_function = zend_arena_alloc(&CG(arena), sizeof(zend_internal_function));
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memcpy(new_function, function, sizeof(zend_internal_function));
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new_function->common.fn_flags |= ZEND_ACC_ARENA_ALLOCATED;
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}
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} else {
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new_function = zend_arena_alloc(&CG(arena), sizeof(zend_op_array));
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memcpy(new_function, function, sizeof(zend_op_array));
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}
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zend_hash_str_update_ptr(&ce->function_table, ZEND_CONSTRUCTOR_FUNC_NAME, sizeof(ZEND_CONSTRUCTOR_FUNC_NAME)-1, new_function);
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function_add_ref(new_function);
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} else {
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/* Don't inherit the old style constructor if we already have the new style constructor */
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zend_string *lc_class_name;
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zend_string *lc_parent_class_name;
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lc_class_name = zend_string_tolower(ce->name);
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if (!zend_hash_exists(&ce->function_table, lc_class_name)) {
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lc_parent_class_name = zend_string_tolower(ce->parent->name);
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if (!zend_hash_exists(&ce->function_table, lc_parent_class_name) &&
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(function = zend_hash_find_ptr(&ce->parent->function_table, lc_parent_class_name)) != NULL) {
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if (function->common.fn_flags & ZEND_ACC_CTOR) {
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/* inherit parent's constructor */
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if (function->type == ZEND_INTERNAL_FUNCTION) {
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if (ce->type & ZEND_INTERNAL_CLASS) {
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new_function = pemalloc(sizeof(zend_internal_function), 1);
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memcpy(new_function, function, sizeof(zend_internal_function));
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} else {
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new_function = zend_arena_alloc(&CG(arena), sizeof(zend_internal_function));
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memcpy(new_function, function, sizeof(zend_internal_function));
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new_function->common.fn_flags |= ZEND_ACC_ARENA_ALLOCATED;
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}
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} else {
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new_function = zend_arena_alloc(&CG(arena), sizeof(zend_op_array));
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memcpy(new_function, function, sizeof(zend_op_array));
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}
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zend_hash_update_ptr(&ce->function_table, lc_parent_class_name, new_function);
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function_add_ref(new_function);
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}
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}
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zend_string_release(lc_parent_class_name);
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}
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zend_string_release(lc_class_name);
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}
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ce->constructor = ce->parent->constructor;
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}
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/* }}} */
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char *zend_visibility_string(uint32_t fn_flags) /* {{{ */
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{
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if (fn_flags & ZEND_ACC_PRIVATE) {
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return "private";
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}
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if (fn_flags & ZEND_ACC_PROTECTED) {
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return "protected";
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}
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if (fn_flags & ZEND_ACC_PUBLIC) {
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return "public";
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}
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return "";
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}
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/* }}} */
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static zend_function *do_inherit_method(zend_function *old_function, zend_class_entry *ce) /* {{{ */
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{
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zend_function *new_function;
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if (old_function->type == ZEND_INTERNAL_FUNCTION) {
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if (ce->type & ZEND_INTERNAL_CLASS) {
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new_function = pemalloc(sizeof(zend_internal_function), 1);
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memcpy(new_function, old_function, sizeof(zend_internal_function));
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} else {
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new_function = zend_arena_alloc(&CG(arena), sizeof(zend_internal_function));
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memcpy(new_function, old_function, sizeof(zend_internal_function));
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new_function->common.fn_flags |= ZEND_ACC_ARENA_ALLOCATED;
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}
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} else {
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new_function = zend_arena_alloc(&CG(arena), sizeof(zend_op_array));
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memcpy(new_function, old_function, sizeof(zend_op_array));
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}
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/* The class entry of the derived function intentionally remains the same
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* as that of the parent class. That allows us to know in which context
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* we're running, and handle private method calls properly.
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*/
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function_add_ref(new_function);
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return new_function;
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}
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/* }}} */
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static int zend_do_perform_type_hint_check(const zend_function *fe, zend_arg_info *fe_arg_info, const zend_function *proto, zend_arg_info *proto_arg_info) /* {{{ */
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{
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if (ZEND_LOG_XOR(fe_arg_info->class_name, proto_arg_info->class_name)) {
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/* Only one has a type hint and the other one doesn't */
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return 0;
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}
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if (fe_arg_info->class_name) {
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zend_string *fe_class_name, *proto_class_name;
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const char *class_name;
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if (fe->type == ZEND_INTERNAL_FUNCTION) {
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fe_class_name = NULL;
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class_name = ((zend_internal_arg_info*)fe_arg_info)->class_name;
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} else {
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fe_class_name = fe_arg_info->class_name;
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class_name = fe_arg_info->class_name->val;
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}
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if (!strcasecmp(class_name, "parent") && proto->common.scope) {
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fe_class_name = zend_string_copy(proto->common.scope->name);
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} else if (!strcasecmp(class_name, "self") && fe->common.scope) {
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fe_class_name = zend_string_copy(fe->common.scope->name);
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} else if (fe_class_name) {
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zend_string_addref(fe_class_name);
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} else {
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fe_class_name = zend_string_init(class_name, strlen(class_name), 0);
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}
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if (proto->type == ZEND_INTERNAL_FUNCTION) {
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proto_class_name = NULL;
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class_name = ((zend_internal_arg_info*)proto_arg_info)->class_name;
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} else {
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proto_class_name = proto_arg_info->class_name;
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class_name = proto_arg_info->class_name->val;
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}
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if (!strcasecmp(class_name, "parent") && proto->common.scope && proto->common.scope->parent) {
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proto_class_name = zend_string_copy(proto->common.scope->parent->name);
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} else if (!strcasecmp(class_name, "self") && proto->common.scope) {
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proto_class_name = zend_string_copy(proto->common.scope->name);
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} else if (proto_class_name) {
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zend_string_addref(proto_class_name);
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} else {
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proto_class_name = zend_string_init(class_name, strlen(class_name), 0);
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}
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if (strcasecmp(fe_class_name->val, proto_class_name->val) != 0) {
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const char *colon;
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if (fe->common.type != ZEND_USER_FUNCTION) {
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zend_string_release(proto_class_name);
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zend_string_release(fe_class_name);
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return 0;
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} else if (strchr(proto_class_name->val, '\\') != NULL ||
|
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(colon = zend_memrchr(fe_class_name->val, '\\', fe_class_name->len)) == NULL ||
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strcasecmp(colon+1, proto_class_name->val) != 0) {
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zend_class_entry *fe_ce, *proto_ce;
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fe_ce = zend_lookup_class(fe_class_name);
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proto_ce = zend_lookup_class(proto_class_name);
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|
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/* Check for class alias */
|
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if (!fe_ce || !proto_ce ||
|
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fe_ce->type == ZEND_INTERNAL_CLASS ||
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proto_ce->type == ZEND_INTERNAL_CLASS ||
|
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fe_ce != proto_ce) {
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zend_string_release(proto_class_name);
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zend_string_release(fe_class_name);
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return 0;
|
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}
|
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}
|
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}
|
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zend_string_release(proto_class_name);
|
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zend_string_release(fe_class_name);
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}
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|
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if (fe_arg_info->type_hint != proto_arg_info->type_hint) {
|
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/* Incompatible type hint */
|
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return 0;
|
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}
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|
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return 1;
|
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}
|
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/* }}} */
|
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|
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static zend_bool zend_do_perform_implementation_check(const zend_function *fe, const zend_function *proto) /* {{{ */
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{
|
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uint32_t i, num_args;
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|
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/* If it's a user function then arg_info == NULL means we don't have any parameters but
|
|
* we still need to do the arg number checks. We are only willing to ignore this for internal
|
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* functions because extensions don't always define arg_info.
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*/
|
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if (!proto || (!proto->common.arg_info && proto->common.type != ZEND_USER_FUNCTION)) {
|
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return 1;
|
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}
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|
|
/* Checks for constructors only if they are declared in an interface,
|
|
* or explicitly marked as abstract
|
|
*/
|
|
if ((fe->common.fn_flags & ZEND_ACC_CTOR)
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&& ((proto->common.scope->ce_flags & ZEND_ACC_INTERFACE) == 0
|
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&& (proto->common.fn_flags & ZEND_ACC_ABSTRACT) == 0)) {
|
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return 1;
|
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}
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|
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/* If both methods are private do not enforce a signature */
|
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if ((fe->common.fn_flags & ZEND_ACC_PRIVATE) && (proto->common.fn_flags & ZEND_ACC_PRIVATE)) {
|
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return 1;
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}
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|
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/* check number of arguments */
|
|
if (proto->common.required_num_args < fe->common.required_num_args
|
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|| proto->common.num_args > fe->common.num_args) {
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return 0;
|
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}
|
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|
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/* by-ref constraints on return values are covariant */
|
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if ((proto->common.fn_flags & ZEND_ACC_RETURN_REFERENCE)
|
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&& !(fe->common.fn_flags & ZEND_ACC_RETURN_REFERENCE)) {
|
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return 0;
|
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}
|
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|
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if ((proto->common.fn_flags & ZEND_ACC_VARIADIC)
|
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&& !(fe->common.fn_flags & ZEND_ACC_VARIADIC)) {
|
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return 0;
|
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}
|
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|
|
/* For variadic functions any additional (optional) arguments that were added must be
|
|
* checked against the signature of the variadic argument, so in this case we have to
|
|
* go through all the parameters of the function and not just those present in the
|
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* prototype. */
|
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num_args = proto->common.num_args;
|
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if (proto->common.fn_flags & ZEND_ACC_VARIADIC) {
|
|
num_args++;
|
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if (fe->common.num_args >= proto->common.num_args) {
|
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num_args = fe->common.num_args;
|
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if (fe->common.fn_flags & ZEND_ACC_VARIADIC) {
|
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num_args++;
|
|
}
|
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}
|
|
}
|
|
|
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for (i = 0; i < num_args; i++) {
|
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zend_arg_info *fe_arg_info = &fe->common.arg_info[i];
|
|
|
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zend_arg_info *proto_arg_info;
|
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if (i < proto->common.num_args) {
|
|
proto_arg_info = &proto->common.arg_info[i];
|
|
} else {
|
|
proto_arg_info = &proto->common.arg_info[proto->common.num_args];
|
|
}
|
|
|
|
if (!zend_do_perform_type_hint_check(fe, fe_arg_info, proto, proto_arg_info)) {
|
|
return 0;
|
|
}
|
|
|
|
/* by-ref constraints on arguments are invariant */
|
|
if (fe_arg_info->pass_by_reference != proto_arg_info->pass_by_reference) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* check return type compataibility */
|
|
if ((proto->common.fn_flags | fe->common.fn_flags) & ZEND_ACC_HAS_RETURN_TYPE) {
|
|
if ((proto->common.fn_flags ^ fe->common.fn_flags) & ZEND_ACC_HAS_RETURN_TYPE) {
|
|
return 0;
|
|
}
|
|
if (!zend_do_perform_type_hint_check(fe, fe->common.arg_info - 1, proto, proto->common.arg_info - 1)) {
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_append_type_hint(smart_str *str, zend_function *fptr, zend_arg_info *arg_info, int return_hint) /* {{{ */
|
|
{
|
|
if (arg_info->class_name) {
|
|
const char *class_name;
|
|
size_t class_name_len;
|
|
|
|
if (fptr->type == ZEND_INTERNAL_FUNCTION) {
|
|
class_name = ((zend_internal_arg_info*)arg_info)->class_name;
|
|
class_name_len = strlen(class_name);
|
|
} else {
|
|
class_name = arg_info->class_name->val;
|
|
class_name_len = arg_info->class_name->len;
|
|
}
|
|
|
|
if (!strcasecmp(class_name, "self") && fptr->common.scope) {
|
|
class_name = fptr->common.scope->name->val;
|
|
class_name_len = fptr->common.scope->name->len;
|
|
} else if (!strcasecmp(class_name, "parent") && fptr->common.scope && fptr->common.scope->parent) {
|
|
class_name = fptr->common.scope->parent->name->val;
|
|
class_name_len = fptr->common.scope->parent->name->len;
|
|
}
|
|
|
|
smart_str_appendl(str, class_name, class_name_len);
|
|
if (!return_hint) {
|
|
smart_str_appendc(str, ' ');
|
|
}
|
|
} else if (arg_info->type_hint) {
|
|
const char *type_name = zend_get_type_by_const(arg_info->type_hint);
|
|
smart_str_appends(str, type_name);
|
|
if (!return_hint) {
|
|
smart_str_appendc(str, ' ');
|
|
}
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_string *zend_get_function_declaration(zend_function *fptr) /* {{{ */
|
|
{
|
|
smart_str str = {0};
|
|
|
|
if (fptr->op_array.fn_flags & ZEND_ACC_RETURN_REFERENCE) {
|
|
smart_str_appends(&str, "& ");
|
|
}
|
|
|
|
if (fptr->common.scope) {
|
|
smart_str_append(&str, fptr->common.scope->name);
|
|
smart_str_appends(&str, "::");
|
|
}
|
|
|
|
smart_str_append(&str, fptr->common.function_name);
|
|
smart_str_appendc(&str, '(');
|
|
|
|
if (fptr->common.arg_info) {
|
|
uint32_t i, num_args, required;
|
|
zend_arg_info *arg_info = fptr->common.arg_info;
|
|
|
|
required = fptr->common.required_num_args;
|
|
num_args = fptr->common.num_args;
|
|
if (fptr->common.fn_flags & ZEND_ACC_VARIADIC) {
|
|
num_args++;
|
|
}
|
|
for (i = 0; i < num_args;) {
|
|
zend_append_type_hint(&str, fptr, arg_info, 0);
|
|
|
|
if (arg_info->pass_by_reference) {
|
|
smart_str_appendc(&str, '&');
|
|
}
|
|
|
|
if (arg_info->is_variadic) {
|
|
smart_str_appends(&str, "...");
|
|
}
|
|
|
|
smart_str_appendc(&str, '$');
|
|
|
|
if (arg_info->name) {
|
|
if (fptr->type == ZEND_INTERNAL_FUNCTION) {
|
|
smart_str_appends(&str, ((zend_internal_arg_info*)arg_info)->name);
|
|
} else {
|
|
smart_str_appendl(&str, arg_info->name->val, arg_info->name->len);
|
|
}
|
|
} else {
|
|
smart_str_appends(&str, "param");
|
|
smart_str_append_unsigned(&str, i);
|
|
}
|
|
|
|
if (i >= required && !arg_info->is_variadic) {
|
|
smart_str_appends(&str, " = ");
|
|
if (fptr->type == ZEND_USER_FUNCTION) {
|
|
zend_op *precv = NULL;
|
|
{
|
|
uint32_t idx = i;
|
|
zend_op *op = fptr->op_array.opcodes;
|
|
zend_op *end = op + fptr->op_array.last;
|
|
|
|
++idx;
|
|
while (op < end) {
|
|
if ((op->opcode == ZEND_RECV || op->opcode == ZEND_RECV_INIT)
|
|
&& op->op1.num == (zend_ulong)idx)
|
|
{
|
|
precv = op;
|
|
}
|
|
++op;
|
|
}
|
|
}
|
|
if (precv && precv->opcode == ZEND_RECV_INIT && precv->op2_type != IS_UNUSED) {
|
|
zval *zv = RT_CONSTANT(&fptr->op_array, precv->op2);
|
|
|
|
if (Z_TYPE_P(zv) == IS_CONSTANT) {
|
|
smart_str_append(&str, Z_STR_P(zv));
|
|
} else if (Z_TYPE_P(zv) == IS_FALSE) {
|
|
smart_str_appends(&str, "false");
|
|
} else if (Z_TYPE_P(zv) == IS_TRUE) {
|
|
smart_str_appends(&str, "true");
|
|
} else if (Z_TYPE_P(zv) == IS_NULL) {
|
|
smart_str_appends(&str, "NULL");
|
|
} else if (Z_TYPE_P(zv) == IS_STRING) {
|
|
smart_str_appendc(&str, '\'');
|
|
smart_str_appendl(&str, Z_STRVAL_P(zv), MIN(Z_STRLEN_P(zv), 10));
|
|
if (Z_STRLEN_P(zv) > 10) {
|
|
smart_str_appends(&str, "...");
|
|
}
|
|
smart_str_appendc(&str, '\'');
|
|
} else if (Z_TYPE_P(zv) == IS_ARRAY) {
|
|
smart_str_appends(&str, "Array");
|
|
} else if (Z_TYPE_P(zv) == IS_CONSTANT_AST) {
|
|
smart_str_appends(&str, "<expression>");
|
|
} else {
|
|
zend_string *zv_str = zval_get_string(zv);
|
|
smart_str_append(&str, zv_str);
|
|
zend_string_release(zv_str);
|
|
}
|
|
}
|
|
} else {
|
|
smart_str_appends(&str, "NULL");
|
|
}
|
|
}
|
|
|
|
if (++i < num_args) {
|
|
smart_str_appends(&str, ", ");
|
|
}
|
|
arg_info++;
|
|
}
|
|
}
|
|
|
|
smart_str_appendc(&str, ')');
|
|
|
|
if (fptr->common.fn_flags & ZEND_ACC_HAS_RETURN_TYPE) {
|
|
smart_str_appends(&str, ": ");
|
|
zend_append_type_hint(&str, fptr, fptr->common.arg_info - 1, 1);
|
|
}
|
|
smart_str_0(&str);
|
|
|
|
return str.s;
|
|
}
|
|
/* }}} */
|
|
|
|
static void do_inheritance_check_on_method(zend_function *child, zend_function *parent) /* {{{ */
|
|
{
|
|
uint32_t child_flags;
|
|
uint32_t parent_flags = parent->common.fn_flags;
|
|
|
|
if ((parent->common.scope->ce_flags & ZEND_ACC_INTERFACE) == 0
|
|
&& parent->common.fn_flags & ZEND_ACC_ABSTRACT
|
|
&& parent->common.scope != (child->common.prototype ? child->common.prototype->common.scope : child->common.scope)
|
|
&& child->common.fn_flags & (ZEND_ACC_ABSTRACT|ZEND_ACC_IMPLEMENTED_ABSTRACT)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Can't inherit abstract function %s::%s() (previously declared abstract in %s)",
|
|
parent->common.scope->name->val,
|
|
child->common.function_name->val,
|
|
child->common.prototype ? child->common.prototype->common.scope->name->val : child->common.scope->name->val);
|
|
}
|
|
|
|
if (parent_flags & ZEND_ACC_FINAL) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Cannot override final method %s::%s()", ZEND_FN_SCOPE_NAME(parent), child->common.function_name->val);
|
|
}
|
|
|
|
child_flags = child->common.fn_flags;
|
|
/* You cannot change from static to non static and vice versa.
|
|
*/
|
|
if ((child_flags & ZEND_ACC_STATIC) != (parent_flags & ZEND_ACC_STATIC)) {
|
|
if (child->common.fn_flags & ZEND_ACC_STATIC) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Cannot make non static method %s::%s() static in class %s", ZEND_FN_SCOPE_NAME(parent), child->common.function_name->val, ZEND_FN_SCOPE_NAME(child));
|
|
} else {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Cannot make static method %s::%s() non static in class %s", ZEND_FN_SCOPE_NAME(parent), child->common.function_name->val, ZEND_FN_SCOPE_NAME(child));
|
|
}
|
|
}
|
|
|
|
/* Disallow making an inherited method abstract. */
|
|
if ((child_flags & ZEND_ACC_ABSTRACT) && !(parent_flags & ZEND_ACC_ABSTRACT)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Cannot make non abstract method %s::%s() abstract in class %s", ZEND_FN_SCOPE_NAME(parent), child->common.function_name->val, ZEND_FN_SCOPE_NAME(child));
|
|
}
|
|
|
|
if (parent_flags & ZEND_ACC_CHANGED) {
|
|
child->common.fn_flags |= ZEND_ACC_CHANGED;
|
|
} else {
|
|
/* Prevent derived classes from restricting access that was available in parent classes
|
|
*/
|
|
if ((child_flags & ZEND_ACC_PPP_MASK) > (parent_flags & ZEND_ACC_PPP_MASK)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Access level to %s::%s() must be %s (as in class %s)%s", ZEND_FN_SCOPE_NAME(child), child->common.function_name->val, zend_visibility_string(parent_flags), ZEND_FN_SCOPE_NAME(parent), (parent_flags&ZEND_ACC_PUBLIC) ? "" : " or weaker");
|
|
} else if (((child_flags & ZEND_ACC_PPP_MASK) < (parent_flags & ZEND_ACC_PPP_MASK))
|
|
&& ((parent_flags & ZEND_ACC_PPP_MASK) & ZEND_ACC_PRIVATE)) {
|
|
child->common.fn_flags |= ZEND_ACC_CHANGED;
|
|
}
|
|
}
|
|
|
|
if (parent_flags & ZEND_ACC_PRIVATE) {
|
|
child->common.prototype = NULL;
|
|
} else if (parent_flags & ZEND_ACC_ABSTRACT) {
|
|
child->common.fn_flags |= ZEND_ACC_IMPLEMENTED_ABSTRACT;
|
|
child->common.prototype = parent;
|
|
} else if (!(parent->common.fn_flags & ZEND_ACC_CTOR) || (parent->common.prototype && (parent->common.prototype->common.scope->ce_flags & ZEND_ACC_INTERFACE))) {
|
|
/* ctors only have a prototype if it comes from an interface */
|
|
child->common.prototype = parent->common.prototype ? parent->common.prototype : parent;
|
|
}
|
|
|
|
if (child->common.prototype && (
|
|
child->common.prototype->common.fn_flags & (ZEND_ACC_ABSTRACT | ZEND_ACC_HAS_RETURN_TYPE)
|
|
)) {
|
|
if (!zend_do_perform_implementation_check(child, child->common.prototype)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Declaration of %s::%s() must be compatible with %s", ZEND_FN_SCOPE_NAME(child), child->common.function_name->val, zend_get_function_declaration(child->common.prototype)->val);
|
|
}
|
|
} else if (EG(error_reporting) & E_STRICT || Z_TYPE(EG(user_error_handler)) != IS_UNDEF) { /* Check E_STRICT (or custom error handler) before the check so that we save some time */
|
|
if (!zend_do_perform_implementation_check(child, parent)) {
|
|
zend_string *method_prototype = zend_get_function_declaration(parent);
|
|
zend_error(E_STRICT, "Declaration of %s::%s() should be compatible with %s", ZEND_FN_SCOPE_NAME(child), child->common.function_name->val, method_prototype->val);
|
|
zend_string_free(method_prototype);
|
|
}
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_bool do_inherit_method_check(HashTable *child_function_table, zend_function *parent, zend_string *key, zend_class_entry *child_ce) /* {{{ */
|
|
{
|
|
uint32_t parent_flags = parent->common.fn_flags;
|
|
zend_function *child;
|
|
|
|
if ((child = zend_hash_find_ptr(child_function_table, key)) == NULL) {
|
|
if (parent_flags & (ZEND_ACC_ABSTRACT)) {
|
|
child_ce->ce_flags |= ZEND_ACC_IMPLICIT_ABSTRACT_CLASS;
|
|
}
|
|
return 1; /* method doesn't exist in child, copy from parent */
|
|
}
|
|
|
|
do_inheritance_check_on_method(child, parent);
|
|
|
|
return 0;
|
|
}
|
|
/* }}} */
|
|
|
|
static void do_inherit_property(zend_property_info *parent_info, zend_string *key, zend_class_entry *ce) /* {{{ */
|
|
{
|
|
zend_property_info *child_info = zend_hash_find_ptr(&ce->properties_info, key);
|
|
zend_class_entry *parent_ce = ce->parent;
|
|
|
|
if (UNEXPECTED(child_info)) {
|
|
if (parent_info->flags & (ZEND_ACC_PRIVATE|ZEND_ACC_SHADOW)) {
|
|
child_info->flags |= ZEND_ACC_CHANGED;
|
|
} else {
|
|
if ((parent_info->flags & ZEND_ACC_STATIC) != (child_info->flags & ZEND_ACC_STATIC)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Cannot redeclare %s%s::$%s as %s%s::$%s",
|
|
(parent_info->flags & ZEND_ACC_STATIC) ? "static " : "non static ", parent_ce->name->val, key->val,
|
|
(child_info->flags & ZEND_ACC_STATIC) ? "static " : "non static ", ce->name->val, key->val);
|
|
}
|
|
|
|
if (parent_info->flags & ZEND_ACC_CHANGED) {
|
|
child_info->flags |= ZEND_ACC_CHANGED;
|
|
}
|
|
|
|
if ((child_info->flags & ZEND_ACC_PPP_MASK) > (parent_info->flags & ZEND_ACC_PPP_MASK)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Access level to %s::$%s must be %s (as in class %s)%s", ce->name->val, key->val, zend_visibility_string(parent_info->flags), parent_ce->name->val, (parent_info->flags&ZEND_ACC_PUBLIC) ? "" : " or weaker");
|
|
} else if ((child_info->flags & ZEND_ACC_STATIC) == 0) {
|
|
int parent_num = OBJ_PROP_TO_NUM(parent_info->offset);
|
|
int child_num = OBJ_PROP_TO_NUM(child_info->offset);
|
|
|
|
zval_ptr_dtor(&(ce->default_properties_table[parent_num]));
|
|
ce->default_properties_table[parent_num] = ce->default_properties_table[child_num];
|
|
ZVAL_UNDEF(&ce->default_properties_table[child_num]);
|
|
child_info->offset = parent_info->offset;
|
|
}
|
|
}
|
|
} else {
|
|
if (parent_info->flags & (ZEND_ACC_PRIVATE|ZEND_ACC_SHADOW)) {
|
|
if(ce->type & ZEND_INTERNAL_CLASS) {
|
|
child_info = zend_duplicate_property_info_internal(parent_info);
|
|
} else {
|
|
child_info = zend_duplicate_property_info(parent_info);
|
|
}
|
|
child_info->flags &= ~ZEND_ACC_PRIVATE; /* it's not private anymore */
|
|
child_info->flags |= ZEND_ACC_SHADOW; /* but it's a shadow of private */
|
|
} else {
|
|
if (ce->type & ZEND_INTERNAL_CLASS) {
|
|
child_info = zend_duplicate_property_info_internal(parent_info);
|
|
} else {
|
|
child_info = parent_info;
|
|
}
|
|
}
|
|
zend_string_addref(key);
|
|
_zend_hash_append_ptr(&ce->properties_info, key, child_info);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static inline void do_implement_interface(zend_class_entry *ce, zend_class_entry *iface) /* {{{ */
|
|
{
|
|
if (!(ce->ce_flags & ZEND_ACC_INTERFACE) && iface->interface_gets_implemented && iface->interface_gets_implemented(iface, ce) == FAILURE) {
|
|
zend_error(E_CORE_ERROR, "Class %s could not implement interface %s", ce->name->val, iface->name->val);
|
|
}
|
|
if (ce == iface) {
|
|
zend_error(E_ERROR, "Interface %s cannot implement itself", ce->name->val);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_do_inherit_interfaces(zend_class_entry *ce, const zend_class_entry *iface) /* {{{ */
|
|
{
|
|
/* expects interface to be contained in ce's interface list already */
|
|
uint32_t i, ce_num, if_num = iface->num_interfaces;
|
|
zend_class_entry *entry;
|
|
|
|
if (if_num==0) {
|
|
return;
|
|
}
|
|
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 + if_num));
|
|
} else {
|
|
ce->interfaces = (zend_class_entry **) erealloc(ce->interfaces, sizeof(zend_class_entry *) * (ce_num + if_num));
|
|
}
|
|
|
|
/* Inherit the interfaces, only if they're not already inherited by the class */
|
|
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++]);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
#ifdef ZTS
|
|
# define zval_property_ctor(parent_ce, ce) \
|
|
(((parent_ce)->type != (ce)->type) ? ZVAL_COPY_CTOR : zval_add_ref)
|
|
#else
|
|
# define zval_property_ctor(parent_ce, ce) \
|
|
zval_add_ref
|
|
#endif
|
|
|
|
static void do_inherit_class_constant(zend_string *name, zval *zv, zend_class_entry *ce, zend_class_entry *parent_ce) /* {{{ */
|
|
{
|
|
if (!Z_ISREF_P(zv)) {
|
|
if (parent_ce->type == ZEND_INTERNAL_CLASS) {
|
|
ZVAL_NEW_PERSISTENT_REF(zv, zv);
|
|
} else {
|
|
ZVAL_NEW_REF(zv, zv);
|
|
}
|
|
}
|
|
if (Z_CONSTANT_P(Z_REFVAL_P(zv))) {
|
|
ce->ce_flags &= ~ZEND_ACC_CONSTANTS_UPDATED;
|
|
}
|
|
if (zend_hash_add(&ce->constants_table, name, zv)) {
|
|
Z_ADDREF_P(zv);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce) /* {{{ */
|
|
{
|
|
zend_property_info *property_info;
|
|
zend_function *func;
|
|
zend_string *key;
|
|
zval *zv;
|
|
|
|
if (ce->ce_flags & ZEND_ACC_INTERFACE) {
|
|
/* Interface can only inherit other interfaces */
|
|
if (!(parent_ce->ce_flags & ZEND_ACC_INTERFACE)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Interface %s may not inherit from class (%s)", ce->name->val, parent_ce->name->val);
|
|
}
|
|
} else {
|
|
/* Class declaration must not extend traits or interfaces */
|
|
if (parent_ce->ce_flags & ZEND_ACC_INTERFACE) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Class %s cannot extend from interface %s", ce->name->val, parent_ce->name->val);
|
|
} else if (parent_ce->ce_flags & ZEND_ACC_TRAIT) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Class %s cannot extend from trait %s", ce->name->val, parent_ce->name->val);
|
|
}
|
|
|
|
/* Class must not extend a final class */
|
|
if (parent_ce->ce_flags & ZEND_ACC_FINAL) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Class %s may not inherit from final class (%s)", ce->name->val, parent_ce->name->val);
|
|
}
|
|
}
|
|
|
|
ce->parent = parent_ce;
|
|
|
|
/* Copy serialize/unserialize callbacks */
|
|
if (!ce->serialize) {
|
|
ce->serialize = parent_ce->serialize;
|
|
}
|
|
if (!ce->unserialize) {
|
|
ce->unserialize = parent_ce->unserialize;
|
|
}
|
|
|
|
/* Inherit interfaces */
|
|
zend_do_inherit_interfaces(ce, parent_ce);
|
|
|
|
/* Inherit properties */
|
|
if (parent_ce->default_properties_count) {
|
|
int i = ce->default_properties_count + parent_ce->default_properties_count;
|
|
|
|
ce->default_properties_table = perealloc(ce->default_properties_table, sizeof(zval) * i, ce->type == ZEND_INTERNAL_CLASS);
|
|
if (ce->default_properties_count) {
|
|
while (i-- > parent_ce->default_properties_count) {
|
|
ce->default_properties_table[i] = ce->default_properties_table[i - parent_ce->default_properties_count];
|
|
}
|
|
}
|
|
for (i = 0; i < parent_ce->default_properties_count; i++) {
|
|
#ifdef ZTS
|
|
if (parent_ce->type != ce->type) {
|
|
ZVAL_DUP(&ce->default_properties_table[i], &parent_ce->default_properties_table[i]);
|
|
if (Z_OPT_CONSTANT(ce->default_properties_table[i])) {
|
|
ce->ce_flags &= ~ZEND_ACC_CONSTANTS_UPDATED;
|
|
}
|
|
continue;
|
|
}
|
|
#endif
|
|
|
|
ZVAL_COPY(&ce->default_properties_table[i], &parent_ce->default_properties_table[i]);
|
|
if (Z_OPT_CONSTANT(ce->default_properties_table[i])) {
|
|
ce->ce_flags &= ~ZEND_ACC_CONSTANTS_UPDATED;
|
|
}
|
|
}
|
|
ce->default_properties_count += parent_ce->default_properties_count;
|
|
}
|
|
|
|
if (parent_ce->type != ce->type) {
|
|
/* User class extends internal class */
|
|
zend_update_class_constants(parent_ce );
|
|
if (parent_ce->default_static_members_count) {
|
|
int i = ce->default_static_members_count + parent_ce->default_static_members_count;
|
|
|
|
ce->default_static_members_table = erealloc(ce->default_static_members_table, sizeof(zval) * i);
|
|
if (ce->default_static_members_count) {
|
|
while (i-- > parent_ce->default_static_members_count) {
|
|
ce->default_static_members_table[i] = ce->default_static_members_table[i - parent_ce->default_static_members_count];
|
|
}
|
|
}
|
|
for (i = 0; i < parent_ce->default_static_members_count; i++) {
|
|
ZVAL_MAKE_REF(&CE_STATIC_MEMBERS(parent_ce)[i]);
|
|
ce->default_static_members_table[i] = CE_STATIC_MEMBERS(parent_ce)[i];
|
|
Z_ADDREF(ce->default_static_members_table[i]);
|
|
if (Z_CONSTANT_P(Z_REFVAL(ce->default_static_members_table[i]))) {
|
|
ce->ce_flags &= ~ZEND_ACC_CONSTANTS_UPDATED;
|
|
}
|
|
}
|
|
ce->default_static_members_count += parent_ce->default_static_members_count;
|
|
ce->static_members_table = ce->default_static_members_table;
|
|
}
|
|
} else {
|
|
if (parent_ce->default_static_members_count) {
|
|
int i = ce->default_static_members_count + parent_ce->default_static_members_count;
|
|
|
|
ce->default_static_members_table = perealloc(ce->default_static_members_table, sizeof(zval) * i, ce->type == ZEND_INTERNAL_CLASS);
|
|
if (ce->default_static_members_count) {
|
|
while (i-- > parent_ce->default_static_members_count) {
|
|
ce->default_static_members_table[i] = ce->default_static_members_table[i - parent_ce->default_static_members_count];
|
|
}
|
|
}
|
|
for (i = 0; i < parent_ce->default_static_members_count; i++) {
|
|
ZVAL_MAKE_REF(&parent_ce->default_static_members_table[i]);
|
|
ce->default_static_members_table[i] = parent_ce->default_static_members_table[i];
|
|
Z_ADDREF(ce->default_static_members_table[i]);
|
|
if (Z_CONSTANT_P(Z_REFVAL(ce->default_static_members_table[i]))) {
|
|
ce->ce_flags &= ~ZEND_ACC_CONSTANTS_UPDATED;
|
|
}
|
|
}
|
|
ce->default_static_members_count += parent_ce->default_static_members_count;
|
|
if (ce->type == ZEND_USER_CLASS) {
|
|
ce->static_members_table = ce->default_static_members_table;
|
|
}
|
|
}
|
|
}
|
|
|
|
ZEND_HASH_FOREACH_PTR(&ce->properties_info, property_info) {
|
|
if (property_info->ce == ce) {
|
|
if (property_info->flags & ZEND_ACC_STATIC) {
|
|
property_info->offset += parent_ce->default_static_members_count;
|
|
} else {
|
|
property_info->offset += parent_ce->default_properties_count * sizeof(zval);
|
|
}
|
|
}
|
|
} ZEND_HASH_FOREACH_END();
|
|
|
|
zend_hash_extend(&ce->properties_info,
|
|
zend_hash_num_elements(&ce->properties_info) +
|
|
zend_hash_num_elements(&parent_ce->properties_info), 0);
|
|
|
|
ZEND_HASH_FOREACH_STR_KEY_PTR(&parent_ce->properties_info, key, property_info) {
|
|
do_inherit_property(property_info, key, ce);
|
|
} ZEND_HASH_FOREACH_END();
|
|
|
|
ZEND_HASH_FOREACH_STR_KEY_VAL(&parent_ce->constants_table, key, zv) {
|
|
do_inherit_class_constant(key, zv, ce, parent_ce);
|
|
} ZEND_HASH_FOREACH_END();
|
|
|
|
ZEND_HASH_FOREACH_STR_KEY_PTR(&parent_ce->function_table, key, func) {
|
|
if (do_inherit_method_check(&ce->function_table, func, key, ce)) {
|
|
zend_function *new_func = do_inherit_method(func, ce);
|
|
zend_hash_add_new_ptr(&ce->function_table, key, new_func);
|
|
}
|
|
} ZEND_HASH_FOREACH_END();
|
|
|
|
do_inherit_parent_constructor(ce);
|
|
|
|
if (ce->ce_flags & ZEND_ACC_IMPLICIT_ABSTRACT_CLASS && ce->type == ZEND_INTERNAL_CLASS) {
|
|
ce->ce_flags |= ZEND_ACC_EXPLICIT_ABSTRACT_CLASS;
|
|
} else if (!(ce->ce_flags & (ZEND_ACC_IMPLEMENT_INTERFACES|ZEND_ACC_IMPLEMENT_TRAITS))) {
|
|
/* The verification will be done in runtime by ZEND_VERIFY_ABSTRACT_CLASS */
|
|
zend_verify_abstract_class(ce);
|
|
}
|
|
ce->ce_flags |= parent_ce->ce_flags & (ZEND_HAS_STATIC_IN_METHODS | ZEND_ACC_USE_GUARDS);
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_bool do_inherit_constant_check(HashTable *child_constants_table, zval *parent_constant, zend_string *name, const zend_class_entry *iface) /* {{{ */
|
|
{
|
|
zval *old_constant;
|
|
|
|
if ((old_constant = zend_hash_find(child_constants_table, name)) != NULL) {
|
|
if (!Z_ISREF_P(old_constant) ||
|
|
!Z_ISREF_P(parent_constant) ||
|
|
Z_REFVAL_P(old_constant) != Z_REFVAL_P(parent_constant)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Cannot inherit previously-inherited or override constant %s from interface %s", name->val, iface->name->val);
|
|
}
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
/* }}} */
|
|
|
|
static void do_inherit_iface_constant(zend_string *name, zval *zv, zend_class_entry *ce, zend_class_entry *iface) /* {{{ */
|
|
{
|
|
if (do_inherit_constant_check(&ce->constants_table, zv, name, iface)) {
|
|
ZVAL_MAKE_REF(zv);
|
|
Z_ADDREF_P(zv);
|
|
if (Z_CONSTANT_P(Z_REFVAL_P(zv))) {
|
|
ce->ce_flags &= ~ZEND_ACC_CONSTANTS_UPDATED;
|
|
}
|
|
zend_hash_update(&ce->constants_table, name, zv);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_do_implement_interface(zend_class_entry *ce, zend_class_entry *iface) /* {{{ */
|
|
{
|
|
uint32_t i, ignore = 0;
|
|
uint32_t current_iface_num = ce->num_interfaces;
|
|
uint32_t parent_iface_num = ce->parent ? ce->parent->num_interfaces : 0;
|
|
zend_function *func;
|
|
zend_string *key;
|
|
zval *zv;
|
|
|
|
for (i = 0; i < ce->num_interfaces; i++) {
|
|
if (ce->interfaces[i] == NULL) {
|
|
memmove(ce->interfaces + i, ce->interfaces + i + 1, sizeof(zend_class_entry*) * (--ce->num_interfaces - i));
|
|
i--;
|
|
} else if (ce->interfaces[i] == iface) {
|
|
if (i < parent_iface_num) {
|
|
ignore = 1;
|
|
} else {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Class %s cannot implement previously implemented interface %s", ce->name->val, iface->name->val);
|
|
}
|
|
}
|
|
}
|
|
if (ignore) {
|
|
/* Check for attempt to redeclare interface constants */
|
|
ZEND_HASH_FOREACH_STR_KEY_VAL(&ce->constants_table, key, zv) {
|
|
do_inherit_constant_check(&iface->constants_table, zv, key, iface);
|
|
} ZEND_HASH_FOREACH_END();
|
|
} else {
|
|
if (ce->num_interfaces >= current_iface_num) {
|
|
if (ce->type == ZEND_INTERNAL_CLASS) {
|
|
ce->interfaces = (zend_class_entry **) realloc(ce->interfaces, sizeof(zend_class_entry *) * (++current_iface_num));
|
|
} else {
|
|
ce->interfaces = (zend_class_entry **) erealloc(ce->interfaces, sizeof(zend_class_entry *) * (++current_iface_num));
|
|
}
|
|
}
|
|
ce->interfaces[ce->num_interfaces++] = iface;
|
|
|
|
ZEND_HASH_FOREACH_STR_KEY_VAL(&iface->constants_table, key, zv) {
|
|
do_inherit_iface_constant(key, zv, ce, iface);
|
|
} ZEND_HASH_FOREACH_END();
|
|
|
|
ZEND_HASH_FOREACH_STR_KEY_PTR(&iface->function_table, key, func) {
|
|
if (do_inherit_method_check(&ce->function_table, func, key, ce)) {
|
|
zend_function *new_func = do_inherit_method(func, ce);
|
|
zend_hash_add_new_ptr(&ce->function_table, key, new_func);
|
|
}
|
|
} ZEND_HASH_FOREACH_END();
|
|
|
|
do_implement_interface(ce, iface);
|
|
zend_do_inherit_interfaces(ce, iface);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_do_implement_trait(zend_class_entry *ce, zend_class_entry *trait) /* {{{ */
|
|
{
|
|
uint32_t i, ignore = 0;
|
|
uint32_t current_trait_num = ce->num_traits;
|
|
uint32_t parent_trait_num = ce->parent ? ce->parent->num_traits : 0;
|
|
|
|
for (i = 0; i < ce->num_traits; i++) {
|
|
if (ce->traits[i] == NULL) {
|
|
memmove(ce->traits + i, ce->traits + i + 1, sizeof(zend_class_entry*) * (--ce->num_traits - i));
|
|
i--;
|
|
} else if (ce->traits[i] == trait) {
|
|
if (i < parent_trait_num) {
|
|
ignore = 1;
|
|
}
|
|
}
|
|
}
|
|
if (!ignore) {
|
|
if (ce->num_traits >= current_trait_num) {
|
|
if (ce->type == ZEND_INTERNAL_CLASS) {
|
|
ce->traits = (zend_class_entry **) realloc(ce->traits, sizeof(zend_class_entry *) * (++current_trait_num));
|
|
} else {
|
|
ce->traits = (zend_class_entry **) erealloc(ce->traits, sizeof(zend_class_entry *) * (++current_trait_num));
|
|
}
|
|
}
|
|
ce->traits[ce->num_traits++] = trait;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_bool zend_traits_method_compatibility_check(zend_function *fn, zend_function *other_fn) /* {{{ */
|
|
{
|
|
uint32_t fn_flags = fn->common.scope->ce_flags;
|
|
uint32_t other_flags = other_fn->common.scope->ce_flags;
|
|
|
|
return zend_do_perform_implementation_check(fn, other_fn)
|
|
&& ((other_fn->common.scope->ce_flags & ZEND_ACC_INTERFACE) || zend_do_perform_implementation_check(other_fn, fn))
|
|
&& ((fn_flags & (ZEND_ACC_FINAL|ZEND_ACC_STATIC)) ==
|
|
(other_flags & (ZEND_ACC_FINAL|ZEND_ACC_STATIC))); /* equal final and static qualifier */
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_add_magic_methods(zend_class_entry* ce, zend_string* mname, zend_function* fe) /* {{{ */
|
|
{
|
|
if (!strncmp(mname->val, ZEND_CLONE_FUNC_NAME, mname->len)) {
|
|
ce->clone = fe; fe->common.fn_flags |= ZEND_ACC_CLONE;
|
|
} else if (!strncmp(mname->val, ZEND_CONSTRUCTOR_FUNC_NAME, mname->len)) {
|
|
if (ce->constructor && (!ce->parent || ce->constructor != ce->parent->constructor)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "%s has colliding constructor definitions coming from traits", ce->name->val);
|
|
}
|
|
ce->constructor = fe; fe->common.fn_flags |= ZEND_ACC_CTOR;
|
|
} else if (!strncmp(mname->val, ZEND_DESTRUCTOR_FUNC_NAME, mname->len)) {
|
|
ce->destructor = fe; fe->common.fn_flags |= ZEND_ACC_DTOR;
|
|
} else if (!strncmp(mname->val, ZEND_GET_FUNC_NAME, mname->len)) {
|
|
ce->__get = fe;
|
|
ce->ce_flags |= ZEND_ACC_USE_GUARDS;
|
|
} else if (!strncmp(mname->val, ZEND_SET_FUNC_NAME, mname->len)) {
|
|
ce->__set = fe;
|
|
ce->ce_flags |= ZEND_ACC_USE_GUARDS;
|
|
} else if (!strncmp(mname->val, ZEND_CALL_FUNC_NAME, mname->len)) {
|
|
ce->__call = fe;
|
|
} else if (!strncmp(mname->val, ZEND_UNSET_FUNC_NAME, mname->len)) {
|
|
ce->__unset = fe;
|
|
ce->ce_flags |= ZEND_ACC_USE_GUARDS;
|
|
} else if (!strncmp(mname->val, ZEND_ISSET_FUNC_NAME, mname->len)) {
|
|
ce->__isset = fe;
|
|
ce->ce_flags |= ZEND_ACC_USE_GUARDS;
|
|
} else if (!strncmp(mname->val, ZEND_CALLSTATIC_FUNC_NAME, mname->len)) {
|
|
ce->__callstatic = fe;
|
|
} else if (!strncmp(mname->val, ZEND_TOSTRING_FUNC_NAME, mname->len)) {
|
|
ce->__tostring = fe;
|
|
} else if (!strncmp(mname->val, ZEND_DEBUGINFO_FUNC_NAME, mname->len)) {
|
|
ce->__debugInfo = fe;
|
|
} else if (ce->name->len == mname->len) {
|
|
zend_string *lowercase_name = zend_string_tolower(ce->name);
|
|
lowercase_name = zend_new_interned_string(lowercase_name);
|
|
if (!memcmp(mname->val, lowercase_name->val, mname->len)) {
|
|
if (ce->constructor && (!ce->parent || ce->constructor != ce->parent->constructor)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "%s has colliding constructor definitions coming from traits", ce->name->val);
|
|
}
|
|
ce->constructor = fe;
|
|
fe->common.fn_flags |= ZEND_ACC_CTOR;
|
|
}
|
|
zend_string_release(lowercase_name);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_add_trait_method(zend_class_entry *ce, const char *name, zend_string *key, zend_function *fn, HashTable **overriden) /* {{{ */
|
|
{
|
|
zend_function *existing_fn = NULL;
|
|
zend_function *new_fn;
|
|
|
|
if ((existing_fn = zend_hash_find_ptr(&ce->function_table, key)) != NULL) {
|
|
if (existing_fn->common.scope == ce) {
|
|
/* members from the current class override trait methods */
|
|
/* use temporary *overriden HashTable to detect hidden conflict */
|
|
if (*overriden) {
|
|
if ((existing_fn = zend_hash_find_ptr(*overriden, key)) != NULL) {
|
|
if (existing_fn->common.fn_flags & ZEND_ACC_ABSTRACT) {
|
|
/* Make sure the trait method is compatible with previosly declared abstract method */
|
|
if (!zend_traits_method_compatibility_check(fn, existing_fn)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Declaration of %s must be compatible with %s",
|
|
zend_get_function_declaration(fn)->val,
|
|
zend_get_function_declaration(existing_fn)->val);
|
|
}
|
|
} else if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) {
|
|
/* Make sure the abstract declaration is compatible with previous declaration */
|
|
if (!zend_traits_method_compatibility_check(existing_fn, fn)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Declaration of %s must be compatible with %s",
|
|
zend_get_function_declaration(fn)->val,
|
|
zend_get_function_declaration(existing_fn)->val);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
} else {
|
|
ALLOC_HASHTABLE(*overriden);
|
|
zend_hash_init_ex(*overriden, 8, NULL, ptr_dtor, 0, 0);
|
|
}
|
|
zend_hash_update_mem(*overriden, key, fn, sizeof(zend_function));
|
|
return;
|
|
} else if (existing_fn->common.fn_flags & ZEND_ACC_ABSTRACT) {
|
|
/* Make sure the trait method is compatible with previosly declared abstract method */
|
|
if (!zend_traits_method_compatibility_check(fn, existing_fn)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Declaration of %s must be compatible with %s",
|
|
zend_get_function_declaration(fn)->val,
|
|
zend_get_function_declaration(existing_fn)->val);
|
|
}
|
|
} else if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) {
|
|
/* Make sure the abstract declaration is compatible with previous declaration */
|
|
if (!zend_traits_method_compatibility_check(existing_fn, fn)) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Declaration of %s must be compatible with %s",
|
|
zend_get_function_declaration(fn)->val,
|
|
zend_get_function_declaration(existing_fn)->val);
|
|
}
|
|
return;
|
|
} else if (existing_fn->common.scope->ce_flags & ZEND_ACC_TRAIT) {
|
|
/* two traits can't define the same non-abstract method */
|
|
#if 1
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Trait method %s has not been applied, because there are collisions with other trait methods on %s",
|
|
name, ce->name->val);
|
|
#else /* TODO: better error message */
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Trait method %s::%s has not been applied as %s::%s, because of collision with %s::%s",
|
|
fn->common.scope->name->val, fn->common.function_name->val,
|
|
ce->name->val, name,
|
|
existing_fn->common.scope->name->val, existing_fn->common.function_name->val);
|
|
#endif
|
|
} else {
|
|
/* inherited members are overridden by members inserted by traits */
|
|
/* check whether the trait method fulfills the inheritance requirements */
|
|
do_inheritance_check_on_method(fn, existing_fn);
|
|
}
|
|
}
|
|
|
|
function_add_ref(fn);
|
|
new_fn = zend_arena_alloc(&CG(arena), sizeof(zend_op_array));
|
|
memcpy(new_fn, fn, sizeof(zend_op_array));
|
|
fn = zend_hash_update_ptr(&ce->function_table, key, new_fn);
|
|
zend_add_magic_methods(ce, key, fn);
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_fixup_trait_method(zend_function *fn, zend_class_entry *ce) /* {{{ */
|
|
{
|
|
if ((fn->common.scope->ce_flags & ZEND_ACC_TRAIT) == ZEND_ACC_TRAIT) {
|
|
|
|
fn->common.scope = ce;
|
|
|
|
if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) {
|
|
ce->ce_flags |= ZEND_ACC_IMPLICIT_ABSTRACT_CLASS;
|
|
}
|
|
if (fn->op_array.static_variables) {
|
|
ce->ce_flags |= ZEND_HAS_STATIC_IN_METHODS;
|
|
}
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static int zend_traits_copy_functions(zend_string *fnname, zend_function *fn, zend_class_entry *ce, HashTable **overriden, HashTable *exclude_table) /* {{{ */
|
|
{
|
|
zend_trait_alias *alias, **alias_ptr;
|
|
zend_string *lcname;
|
|
zend_function fn_copy;
|
|
|
|
/* apply aliases which are qualified with a class name, there should not be any ambiguity */
|
|
if (ce->trait_aliases) {
|
|
alias_ptr = ce->trait_aliases;
|
|
alias = *alias_ptr;
|
|
while (alias) {
|
|
/* Scope unset or equal to the function we compare to, and the alias applies to fn */
|
|
if (alias->alias != NULL
|
|
&& (!alias->trait_method->ce || fn->common.scope == alias->trait_method->ce)
|
|
&& alias->trait_method->method_name->len == fnname->len
|
|
&& (zend_binary_strcasecmp(alias->trait_method->method_name->val, alias->trait_method->method_name->len, fnname->val, fnname->len) == 0)) {
|
|
fn_copy = *fn;
|
|
|
|
/* if it is 0, no modifieres has been changed */
|
|
if (alias->modifiers) {
|
|
fn_copy.common.fn_flags = alias->modifiers | (fn->common.fn_flags ^ (fn->common.fn_flags & ZEND_ACC_PPP_MASK));
|
|
}
|
|
|
|
lcname = zend_string_tolower(alias->alias);
|
|
zend_add_trait_method(ce, alias->alias->val, lcname, &fn_copy, overriden);
|
|
zend_string_release(lcname);
|
|
|
|
/* Record the trait from which this alias was resolved. */
|
|
if (!alias->trait_method->ce) {
|
|
alias->trait_method->ce = fn->common.scope;
|
|
}
|
|
}
|
|
alias_ptr++;
|
|
alias = *alias_ptr;
|
|
}
|
|
}
|
|
|
|
if (exclude_table == NULL || zend_hash_find(exclude_table, fnname) == NULL) {
|
|
/* is not in hashtable, thus, function is not to be excluded */
|
|
fn_copy = *fn;
|
|
|
|
/* apply aliases which have not alias name, just setting visibility */
|
|
if (ce->trait_aliases) {
|
|
alias_ptr = ce->trait_aliases;
|
|
alias = *alias_ptr;
|
|
while (alias) {
|
|
/* Scope unset or equal to the function we compare to, and the alias applies to fn */
|
|
if (alias->alias == NULL && alias->modifiers != 0
|
|
&& (!alias->trait_method->ce || fn->common.scope == alias->trait_method->ce)
|
|
&& (alias->trait_method->method_name->len == fnname->len)
|
|
&& (zend_binary_strcasecmp(alias->trait_method->method_name->val, alias->trait_method->method_name->len, fnname->val, fnname->len) == 0)) {
|
|
|
|
fn_copy.common.fn_flags = alias->modifiers | (fn->common.fn_flags ^ (fn->common.fn_flags & ZEND_ACC_PPP_MASK));
|
|
|
|
/** Record the trait from which this alias was resolved. */
|
|
if (!alias->trait_method->ce) {
|
|
alias->trait_method->ce = fn->common.scope;
|
|
}
|
|
}
|
|
alias_ptr++;
|
|
alias = *alias_ptr;
|
|
}
|
|
}
|
|
|
|
zend_add_trait_method(ce, fn->common.function_name->val, fnname, &fn_copy, overriden);
|
|
}
|
|
|
|
return ZEND_HASH_APPLY_KEEP;
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_check_trait_usage(zend_class_entry *ce, zend_class_entry *trait) /* {{{ */
|
|
{
|
|
uint32_t i;
|
|
|
|
if ((trait->ce_flags & ZEND_ACC_TRAIT) != ZEND_ACC_TRAIT) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Class %s is not a trait, Only traits may be used in 'as' and 'insteadof' statements", trait->name->val);
|
|
}
|
|
|
|
for (i = 0; i < ce->num_traits; i++) {
|
|
if (ce->traits[i] == trait) {
|
|
return;
|
|
}
|
|
}
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Required Trait %s wasn't added to %s", trait->name->val, ce->name->val);
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_traits_init_trait_structures(zend_class_entry *ce) /* {{{ */
|
|
{
|
|
size_t i, j = 0;
|
|
zend_trait_precedence *cur_precedence;
|
|
zend_trait_method_reference *cur_method_ref;
|
|
zend_string *lcname;
|
|
zend_bool method_exists;
|
|
|
|
/* resolve class references */
|
|
if (ce->trait_precedences) {
|
|
i = 0;
|
|
while ((cur_precedence = ce->trait_precedences[i])) {
|
|
/** Resolve classes for all precedence operations. */
|
|
if (cur_precedence->exclude_from_classes) {
|
|
cur_method_ref = cur_precedence->trait_method;
|
|
if (!(cur_precedence->trait_method->ce = zend_fetch_class(cur_method_ref->class_name,
|
|
ZEND_FETCH_CLASS_TRAIT|ZEND_FETCH_CLASS_NO_AUTOLOAD))) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Could not find trait %s", cur_method_ref->class_name->val);
|
|
}
|
|
zend_check_trait_usage(ce, cur_precedence->trait_method->ce);
|
|
|
|
/** Ensure that the preferred method is actually available. */
|
|
lcname = zend_string_tolower(cur_method_ref->method_name);
|
|
method_exists = zend_hash_exists(&cur_method_ref->ce->function_table,
|
|
lcname);
|
|
zend_string_release(lcname);
|
|
if (!method_exists) {
|
|
zend_error_noreturn(E_COMPILE_ERROR,
|
|
"A precedence rule was defined for %s::%s but this method does not exist",
|
|
cur_method_ref->ce->name->val,
|
|
cur_method_ref->method_name->val);
|
|
}
|
|
|
|
/** With the other traits, we are more permissive.
|
|
We do not give errors for those. This allows to be more
|
|
defensive in such definitions.
|
|
However, we want to make sure that the insteadof declaration
|
|
is consistent in itself.
|
|
*/
|
|
j = 0;
|
|
while (cur_precedence->exclude_from_classes[j].class_name) {
|
|
zend_string* class_name = cur_precedence->exclude_from_classes[j].class_name;
|
|
|
|
if (!(cur_precedence->exclude_from_classes[j].ce = zend_fetch_class(class_name, ZEND_FETCH_CLASS_TRAIT |ZEND_FETCH_CLASS_NO_AUTOLOAD))) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Could not find trait %s", class_name->val);
|
|
}
|
|
zend_check_trait_usage(ce, cur_precedence->exclude_from_classes[j].ce);
|
|
|
|
/* make sure that the trait method is not from a class mentioned in
|
|
exclude_from_classes, for consistency */
|
|
if (cur_precedence->trait_method->ce == cur_precedence->exclude_from_classes[j].ce) {
|
|
zend_error_noreturn(E_COMPILE_ERROR,
|
|
"Inconsistent insteadof definition. "
|
|
"The method %s is to be used from %s, but %s is also on the exclude list",
|
|
cur_method_ref->method_name->val,
|
|
cur_precedence->trait_method->ce->name->val,
|
|
cur_precedence->trait_method->ce->name->val);
|
|
}
|
|
|
|
zend_string_release(class_name);
|
|
j++;
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
|
|
if (ce->trait_aliases) {
|
|
i = 0;
|
|
while (ce->trait_aliases[i]) {
|
|
/** For all aliases with an explicit class name, resolve the class now. */
|
|
if (ce->trait_aliases[i]->trait_method->class_name) {
|
|
cur_method_ref = ce->trait_aliases[i]->trait_method;
|
|
if (!(cur_method_ref->ce = zend_fetch_class(cur_method_ref->class_name, ZEND_FETCH_CLASS_TRAIT|ZEND_FETCH_CLASS_NO_AUTOLOAD))) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Could not find trait %s", cur_method_ref->class_name->val);
|
|
}
|
|
zend_check_trait_usage(ce, cur_method_ref->ce);
|
|
|
|
/** And, ensure that the referenced method is resolvable, too. */
|
|
lcname = zend_string_tolower(cur_method_ref->method_name);
|
|
method_exists = zend_hash_exists(&cur_method_ref->ce->function_table,
|
|
lcname);
|
|
zend_string_release(lcname);
|
|
|
|
if (!method_exists) {
|
|
zend_error_noreturn(E_COMPILE_ERROR, "An alias was defined for %s::%s but this method does not exist", cur_method_ref->ce->name->val, cur_method_ref->method_name->val);
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_traits_compile_exclude_table(HashTable* exclude_table, zend_trait_precedence **precedences, zend_class_entry *trait) /* {{{ */
|
|
{
|
|
size_t i = 0, j;
|
|
|
|
if (!precedences) {
|
|
return;
|
|
}
|
|
while (precedences[i]) {
|
|
if (precedences[i]->exclude_from_classes) {
|
|
j = 0;
|
|
while (precedences[i]->exclude_from_classes[j].ce) {
|
|
if (precedences[i]->exclude_from_classes[j].ce == trait) {
|
|
zend_string *lcname =
|
|
zend_string_tolower(precedences[i]->trait_method->method_name);
|
|
if (zend_hash_add_empty_element(exclude_table, lcname) == NULL) {
|
|
zend_string_release(lcname);
|
|
zend_error_noreturn(E_COMPILE_ERROR, "Failed to evaluate a trait precedence (%s). Method of trait %s was defined to be excluded multiple times", precedences[i]->trait_method->method_name->val, trait->name->val);
|
|
}
|
|
zend_string_release(lcname);
|
|
}
|
|
++j;
|
|
}
|
|
}
|
|
++i;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_do_traits_method_binding(zend_class_entry *ce) /* {{{ */
|
|
{
|
|
uint32_t i;
|
|
HashTable *overriden = NULL;
|
|
zend_string *key;
|
|
zend_function *fn;
|
|
|
|
for (i = 0; i < ce->num_traits; i++) {
|
|
if (ce->trait_precedences) {
|
|
HashTable exclude_table;
|
|
|
|
/* TODO: revisit this start size, may be its not optimal */
|
|
zend_hash_init_ex(&exclude_table, 8, NULL, NULL, 0, 0);
|
|
|
|
zend_traits_compile_exclude_table(&exclude_table, ce->trait_precedences, ce->traits[i]);
|
|
|
|
/* copies functions, applies defined aliasing, and excludes unused trait methods */
|
|
ZEND_HASH_FOREACH_STR_KEY_PTR(&ce->traits[i]->function_table, key, fn) {
|
|
zend_traits_copy_functions(key, fn, ce, &overriden, &exclude_table);
|
|
} ZEND_HASH_FOREACH_END();
|
|
|
|
zend_hash_destroy(&exclude_table);
|
|
} else {
|
|
ZEND_HASH_FOREACH_STR_KEY_PTR(&ce->traits[i]->function_table, key, fn) {
|
|
zend_traits_copy_functions(key, fn, ce, &overriden, NULL);
|
|
} ZEND_HASH_FOREACH_END();
|
|
}
|
|
}
|
|
|
|
ZEND_HASH_FOREACH_PTR(&ce->function_table, fn) {
|
|
zend_fixup_trait_method(fn, ce);
|
|
} ZEND_HASH_FOREACH_END();
|
|
|
|
if (overriden) {
|
|
zend_hash_destroy(overriden);
|
|
FREE_HASHTABLE(overriden);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_class_entry* find_first_definition(zend_class_entry *ce, size_t current_trait, zend_string *prop_name, zend_class_entry *coliding_ce) /* {{{ */
|
|
{
|
|
size_t i;
|
|
|
|
if (coliding_ce == ce) {
|
|
for (i = 0; i < current_trait; i++) {
|
|
if (zend_hash_exists(&ce->traits[i]->properties_info, prop_name)) {
|
|
return ce->traits[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
return coliding_ce;
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_do_traits_property_binding(zend_class_entry *ce) /* {{{ */
|
|
{
|
|
size_t i;
|
|
zend_property_info *property_info;
|
|
zend_property_info *coliding_prop;
|
|
zval compare_result;
|
|
zend_string* prop_name;
|
|
const char* class_name_unused;
|
|
zend_bool not_compatible;
|
|
zval* prop_value;
|
|
uint32_t flags;
|
|
zend_string *doc_comment;
|
|
|
|
/* In the following steps the properties are inserted into the property table
|
|
* for that, a very strict approach is applied:
|
|
* - check for compatibility, if not compatible with any property in class -> fatal
|
|
* - if compatible, then strict notice
|
|
*/
|
|
for (i = 0; i < ce->num_traits; i++) {
|
|
ZEND_HASH_FOREACH_PTR(&ce->traits[i]->properties_info, property_info) {
|
|
/* first get the unmangeld name if necessary,
|
|
* then check whether the property is already there
|
|
*/
|
|
flags = property_info->flags;
|
|
if ((flags & ZEND_ACC_PPP_MASK) == ZEND_ACC_PUBLIC) {
|
|
prop_name = zend_string_copy(property_info->name);
|
|
} else {
|
|
const char *pname;
|
|
size_t pname_len;
|
|
|
|
/* for private and protected we need to unmangle the names */
|
|
zend_unmangle_property_name_ex(property_info->name,
|
|
&class_name_unused, &pname, &pname_len);
|
|
prop_name = zend_string_init(pname, pname_len, 0);
|
|
}
|
|
|
|
/* next: check for conflicts with current class */
|
|
if ((coliding_prop = zend_hash_find_ptr(&ce->properties_info, prop_name)) != NULL) {
|
|
if (coliding_prop->flags & ZEND_ACC_SHADOW) {
|
|
zend_string_release(coliding_prop->name);
|
|
if (coliding_prop->doc_comment) {
|
|
zend_string_release(coliding_prop->doc_comment);
|
|
}
|
|
zend_hash_del(&ce->properties_info, prop_name);
|
|
flags |= ZEND_ACC_CHANGED;
|
|
} else {
|
|
if ((coliding_prop->flags & (ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC))
|
|
== (flags & (ZEND_ACC_PPP_MASK | ZEND_ACC_STATIC))) {
|
|
/* flags are identical, now the value needs to be checked */
|
|
if (flags & ZEND_ACC_STATIC) {
|
|
not_compatible = (FAILURE == compare_function(&compare_result,
|
|
&ce->default_static_members_table[coliding_prop->offset],
|
|
&ce->traits[i]->default_static_members_table[property_info->offset]))
|
|
|| (Z_LVAL(compare_result) != 0);
|
|
} else {
|
|
not_compatible = (FAILURE == compare_function(&compare_result,
|
|
&ce->default_properties_table[OBJ_PROP_TO_NUM(coliding_prop->offset)],
|
|
&ce->traits[i]->default_properties_table[OBJ_PROP_TO_NUM(property_info->offset)]))
|
|
|| (Z_LVAL(compare_result) != 0);
|
|
}
|
|
} else {
|
|
/* the flags are not identical, thus, we assume properties are not compatible */
|
|
not_compatible = 1;
|
|
}
|
|
|
|
if (not_compatible) {
|
|
zend_error_noreturn(E_COMPILE_ERROR,
|
|
"%s and %s define the same property ($%s) in the composition of %s. However, the definition differs and is considered incompatible. Class was composed",
|
|
find_first_definition(ce, i, prop_name, coliding_prop->ce)->name->val,
|
|
property_info->ce->name->val,
|
|
prop_name->val,
|
|
ce->name->val);
|
|
} else {
|
|
zend_error(E_STRICT,
|
|
"%s and %s define the same property ($%s) in the composition of %s. This might be incompatible, to improve maintainability consider using accessor methods in traits instead. Class was composed",
|
|
find_first_definition(ce, i, prop_name, coliding_prop->ce)->name->val,
|
|
property_info->ce->name->val,
|
|
prop_name->val,
|
|
ce->name->val);
|
|
zend_string_release(prop_name);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* property not found, so lets add it */
|
|
if (flags & ZEND_ACC_STATIC) {
|
|
prop_value = &ce->traits[i]->default_static_members_table[property_info->offset];
|
|
} else {
|
|
prop_value = &ce->traits[i]->default_properties_table[OBJ_PROP_TO_NUM(property_info->offset)];
|
|
}
|
|
if (Z_REFCOUNTED_P(prop_value)) Z_ADDREF_P(prop_value);
|
|
|
|
doc_comment = property_info->doc_comment ? zend_string_copy(property_info->doc_comment) : NULL;
|
|
zend_declare_property_ex(ce, prop_name,
|
|
prop_value, flags,
|
|
doc_comment);
|
|
zend_string_release(prop_name);
|
|
} ZEND_HASH_FOREACH_END();
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_do_check_for_inconsistent_traits_aliasing(zend_class_entry *ce) /* {{{ */
|
|
{
|
|
int i = 0;
|
|
zend_trait_alias* cur_alias;
|
|
zend_string* lc_method_name;
|
|
|
|
if (ce->trait_aliases) {
|
|
while (ce->trait_aliases[i]) {
|
|
cur_alias = ce->trait_aliases[i];
|
|
/** The trait for this alias has not been resolved, this means, this
|
|
alias was not applied. Abort with an error. */
|
|
if (!cur_alias->trait_method->ce) {
|
|
if (cur_alias->alias) {
|
|
/** Plain old inconsistency/typo/bug */
|
|
zend_error_noreturn(E_COMPILE_ERROR,
|
|
"An alias (%s) was defined for method %s(), but this method does not exist",
|
|
cur_alias->alias->val,
|
|
cur_alias->trait_method->method_name->val);
|
|
} else {
|
|
/** Here are two possible cases:
|
|
1) this is an attempt to modifiy the visibility
|
|
of a method introduce as part of another alias.
|
|
Since that seems to violate the DRY principle,
|
|
we check against it and abort.
|
|
2) it is just a plain old inconsitency/typo/bug
|
|
as in the case where alias is set. */
|
|
|
|
lc_method_name = zend_string_tolower(
|
|
cur_alias->trait_method->method_name);
|
|
if (zend_hash_exists(&ce->function_table,
|
|
lc_method_name)) {
|
|
zend_string_release(lc_method_name);
|
|
zend_error_noreturn(E_COMPILE_ERROR,
|
|
"The modifiers for the trait alias %s() need to be changed in the same statement in which the alias is defined. Error",
|
|
cur_alias->trait_method->method_name->val);
|
|
} else {
|
|
zend_string_release(lc_method_name);
|
|
zend_error_noreturn(E_COMPILE_ERROR,
|
|
"The modifiers of the trait method %s() are changed, but this method does not exist. Error",
|
|
cur_alias->trait_method->method_name->val);
|
|
|
|
}
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_do_bind_traits(zend_class_entry *ce) /* {{{ */
|
|
{
|
|
|
|
if (ce->num_traits <= 0) {
|
|
return;
|
|
}
|
|
|
|
/* complete initialization of trait strutures in ce */
|
|
zend_traits_init_trait_structures(ce);
|
|
|
|
/* first care about all methods to be flattened into the class */
|
|
zend_do_traits_method_binding(ce);
|
|
|
|
/* Aliases which have not been applied indicate typos/bugs. */
|
|
zend_do_check_for_inconsistent_traits_aliasing(ce);
|
|
|
|
/* then flatten the properties into it, to, mostly to notfiy developer about problems */
|
|
zend_do_traits_property_binding(ce);
|
|
|
|
/* verify that all abstract methods from traits have been implemented */
|
|
zend_verify_abstract_class(ce);
|
|
|
|
/* now everything should be fine and an added ZEND_ACC_IMPLICIT_ABSTRACT_CLASS should be removed */
|
|
if (ce->ce_flags & ZEND_ACC_IMPLICIT_ABSTRACT_CLASS) {
|
|
ce->ce_flags -= ZEND_ACC_IMPLICIT_ABSTRACT_CLASS;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*/
|