mirror of
https://github.com/php/php-src.git
synced 2026-03-24 16:22:37 +01:00
134089372b
Previously only an error was thrown when return occured after yield. Also returns before the first yield would fail for by-ref generators. Now the error message is handled in pass_two, so all returns are checked.
660 lines
17 KiB
C
660 lines
17 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2012 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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/* $Id$ */
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#include <stdio.h>
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#include "zend.h"
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#include "zend_alloc.h"
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#include "zend_compile.h"
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#include "zend_extensions.h"
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#include "zend_API.h"
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#include "zend_vm.h"
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static void zend_extension_op_array_ctor_handler(zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
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{
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if (extension->op_array_ctor) {
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extension->op_array_ctor(op_array);
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}
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}
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static void zend_extension_op_array_dtor_handler(zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
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{
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if (extension->op_array_dtor) {
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extension->op_array_dtor(op_array);
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}
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}
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static void op_array_alloc_ops(zend_op_array *op_array, zend_uint size)
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{
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op_array->opcodes = erealloc(op_array->opcodes, size * sizeof(zend_op));
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}
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void init_op_array(zend_op_array *op_array, zend_uchar type, int initial_ops_size TSRMLS_DC)
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{
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op_array->type = type;
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if (CG(interactive)) {
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/* We must avoid a realloc() on the op_array in interactive mode, since pointers to constants
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* will become invalid
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*/
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initial_ops_size = INITIAL_INTERACTIVE_OP_ARRAY_SIZE;
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}
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op_array->refcount = (zend_uint *) emalloc(sizeof(zend_uint));
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*op_array->refcount = 1;
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op_array->last = 0;
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op_array->opcodes = NULL;
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op_array_alloc_ops(op_array, initial_ops_size);
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op_array->last_var = 0;
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op_array->vars = NULL;
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op_array->T = 0;
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op_array->function_name = NULL;
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op_array->filename = zend_get_compiled_filename(TSRMLS_C);
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op_array->doc_comment = NULL;
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op_array->doc_comment_len = 0;
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op_array->arg_info = NULL;
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op_array->num_args = 0;
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op_array->required_num_args = 0;
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op_array->scope = NULL;
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op_array->brk_cont_array = NULL;
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op_array->try_catch_array = NULL;
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op_array->last_brk_cont = 0;
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op_array->static_variables = NULL;
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op_array->last_try_catch = 0;
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op_array->this_var = -1;
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op_array->fn_flags = CG(interactive)?ZEND_ACC_INTERACTIVE:0;
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op_array->early_binding = -1;
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op_array->last_literal = 0;
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op_array->literals = NULL;
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op_array->run_time_cache = NULL;
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op_array->last_cache_slot = 0;
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memset(op_array->reserved, 0, ZEND_MAX_RESERVED_RESOURCES * sizeof(void*));
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zend_llist_apply_with_argument(&zend_extensions, (llist_apply_with_arg_func_t) zend_extension_op_array_ctor_handler, op_array TSRMLS_CC);
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}
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ZEND_API void destroy_zend_function(zend_function *function TSRMLS_DC)
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{
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switch (function->type) {
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case ZEND_USER_FUNCTION:
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destroy_op_array((zend_op_array *) function TSRMLS_CC);
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break;
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case ZEND_INTERNAL_FUNCTION:
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/* do nothing */
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break;
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}
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}
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ZEND_API void zend_function_dtor(zend_function *function)
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{
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TSRMLS_FETCH();
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destroy_zend_function(function TSRMLS_CC);
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}
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static void zend_cleanup_op_array_data(zend_op_array *op_array)
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{
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if (op_array->static_variables) {
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zend_hash_clean(op_array->static_variables);
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}
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}
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ZEND_API int zend_cleanup_function_data(zend_function *function TSRMLS_DC)
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{
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if (function->type == ZEND_USER_FUNCTION) {
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zend_cleanup_op_array_data((zend_op_array *) function);
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return ZEND_HASH_APPLY_KEEP;
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} else {
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return ZEND_HASH_APPLY_STOP;
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}
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}
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ZEND_API int zend_cleanup_function_data_full(zend_function *function TSRMLS_DC)
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{
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if (function->type == ZEND_USER_FUNCTION) {
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zend_cleanup_op_array_data((zend_op_array *) function);
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}
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return 0;
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}
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static inline void cleanup_user_class_data(zend_class_entry *ce TSRMLS_DC)
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{
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/* Clean all parts that can contain run-time data */
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/* Note that only run-time accessed data need to be cleaned up, pre-defined data can
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not contain objects and thus are not probelmatic */
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if (ce->ce_flags & ZEND_HAS_STATIC_IN_METHODS) {
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zend_hash_apply(&ce->function_table, (apply_func_t) zend_cleanup_function_data_full TSRMLS_CC);
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}
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if (ce->static_members_table) {
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int i;
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for (i = 0; i < ce->default_static_members_count; i++) {
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if (ce->static_members_table[i]) {
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zval_ptr_dtor(&ce->static_members_table[i]);
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ce->static_members_table[i] = NULL;
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}
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}
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ce->static_members_table = NULL;
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}
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}
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static inline void cleanup_internal_class_data(zend_class_entry *ce TSRMLS_DC)
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{
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if (CE_STATIC_MEMBERS(ce)) {
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int i;
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for (i = 0; i < ce->default_static_members_count; i++) {
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zval_ptr_dtor(&CE_STATIC_MEMBERS(ce)[i]);
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}
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efree(CE_STATIC_MEMBERS(ce));
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#ifdef ZTS
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CG(static_members_table)[(zend_intptr_t)(ce->static_members_table)] = NULL;
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#else
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ce->static_members_table = NULL;
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#endif
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}
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}
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ZEND_API void zend_cleanup_internal_class_data(zend_class_entry *ce TSRMLS_DC)
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{
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cleanup_internal_class_data(ce TSRMLS_CC);
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}
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ZEND_API int zend_cleanup_user_class_data(zend_class_entry **pce TSRMLS_DC)
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{
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if ((*pce)->type == ZEND_USER_CLASS) {
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cleanup_user_class_data(*pce TSRMLS_CC);
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return ZEND_HASH_APPLY_KEEP;
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} else {
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return ZEND_HASH_APPLY_STOP;
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}
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}
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ZEND_API int zend_cleanup_class_data(zend_class_entry **pce TSRMLS_DC)
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{
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if ((*pce)->type == ZEND_USER_CLASS) {
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cleanup_user_class_data(*pce TSRMLS_CC);
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} else {
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cleanup_internal_class_data(*pce TSRMLS_CC);
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}
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return 0;
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}
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void _destroy_zend_class_traits_info(zend_class_entry *ce)
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{
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if (ce->num_traits > 0 && ce->traits) {
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efree(ce->traits);
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}
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if (ce->trait_aliases) {
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size_t i = 0;
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while (ce->trait_aliases[i]) {
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if (ce->trait_aliases[i]->trait_method) {
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if (ce->trait_aliases[i]->trait_method->method_name) {
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efree((char*)ce->trait_aliases[i]->trait_method->method_name);
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}
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if (ce->trait_aliases[i]->trait_method->class_name) {
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efree((char*)ce->trait_aliases[i]->trait_method->class_name);
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}
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efree(ce->trait_aliases[i]->trait_method);
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}
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if (ce->trait_aliases[i]->alias) {
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efree((char*)ce->trait_aliases[i]->alias);
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}
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efree(ce->trait_aliases[i]);
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i++;
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}
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efree(ce->trait_aliases);
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}
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if (ce->trait_precedences) {
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size_t i = 0;
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while (ce->trait_precedences[i]) {
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efree((char*)ce->trait_precedences[i]->trait_method->method_name);
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efree((char*)ce->trait_precedences[i]->trait_method->class_name);
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efree(ce->trait_precedences[i]->trait_method);
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if (ce->trait_precedences[i]->exclude_from_classes) {
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efree(ce->trait_precedences[i]->exclude_from_classes);
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}
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efree(ce->trait_precedences[i]);
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i++;
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}
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efree(ce->trait_precedences);
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}
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}
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ZEND_API void destroy_zend_class(zend_class_entry **pce)
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{
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zend_class_entry *ce = *pce;
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if (--ce->refcount > 0) {
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return;
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}
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switch (ce->type) {
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case ZEND_USER_CLASS:
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if (ce->default_properties_table) {
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int i;
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for (i = 0; i < ce->default_properties_count; i++) {
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if (ce->default_properties_table[i]) {
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zval_ptr_dtor(&ce->default_properties_table[i]);
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}
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}
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efree(ce->default_properties_table);
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}
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if (ce->default_static_members_table) {
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int i;
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for (i = 0; i < ce->default_static_members_count; i++) {
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if (ce->default_static_members_table[i]) {
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zval_ptr_dtor(&ce->default_static_members_table[i]);
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}
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}
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efree(ce->default_static_members_table);
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}
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zend_hash_destroy(&ce->properties_info);
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str_efree(ce->name);
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zend_hash_destroy(&ce->function_table);
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zend_hash_destroy(&ce->constants_table);
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if (ce->num_interfaces > 0 && ce->interfaces) {
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efree(ce->interfaces);
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}
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if (ce->info.user.doc_comment) {
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efree((char*)ce->info.user.doc_comment);
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}
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_destroy_zend_class_traits_info(ce);
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efree(ce);
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break;
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case ZEND_INTERNAL_CLASS:
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if (ce->default_properties_table) {
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int i;
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for (i = 0; i < ce->default_properties_count; i++) {
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if (ce->default_properties_table[i]) {
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zval_internal_ptr_dtor(&ce->default_properties_table[i]);
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}
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}
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free(ce->default_properties_table);
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}
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if (ce->default_static_members_table) {
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int i;
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for (i = 0; i < ce->default_static_members_count; i++) {
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zval_internal_ptr_dtor(&ce->default_static_members_table[i]);
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}
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free(ce->default_static_members_table);
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}
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zend_hash_destroy(&ce->properties_info);
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str_free(ce->name);
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zend_hash_destroy(&ce->function_table);
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zend_hash_destroy(&ce->constants_table);
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if (ce->num_interfaces > 0) {
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free(ce->interfaces);
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}
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free(ce);
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break;
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}
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}
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void zend_class_add_ref(zend_class_entry **ce)
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{
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(*ce)->refcount++;
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}
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ZEND_API void destroy_op_array(zend_op_array *op_array TSRMLS_DC)
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{
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zend_literal *literal = op_array->literals;
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zend_literal *end;
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zend_uint i;
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if (op_array->static_variables) {
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zend_hash_destroy(op_array->static_variables);
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FREE_HASHTABLE(op_array->static_variables);
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}
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if (op_array->run_time_cache) {
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efree(op_array->run_time_cache);
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}
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if (--(*op_array->refcount)>0) {
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return;
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}
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efree(op_array->refcount);
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if (op_array->vars) {
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i = op_array->last_var;
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while (i > 0) {
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i--;
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str_efree(op_array->vars[i].name);
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}
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efree(op_array->vars);
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}
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if (literal) {
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end = literal + op_array->last_literal;
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while (literal < end) {
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zval_dtor(&literal->constant);
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literal++;
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}
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efree(op_array->literals);
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}
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efree(op_array->opcodes);
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if (op_array->function_name) {
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efree((char*)op_array->function_name);
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}
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if (op_array->doc_comment) {
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efree((char*)op_array->doc_comment);
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}
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if (op_array->brk_cont_array) {
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efree(op_array->brk_cont_array);
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}
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if (op_array->try_catch_array) {
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efree(op_array->try_catch_array);
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}
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if (op_array->fn_flags & ZEND_ACC_DONE_PASS_TWO) {
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zend_llist_apply_with_argument(&zend_extensions, (llist_apply_with_arg_func_t) zend_extension_op_array_dtor_handler, op_array TSRMLS_CC);
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}
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if (op_array->arg_info) {
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for (i=0; i<op_array->num_args; i++) {
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str_efree(op_array->arg_info[i].name);
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if (op_array->arg_info[i].class_name) {
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str_efree(op_array->arg_info[i].class_name);
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}
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}
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efree(op_array->arg_info);
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}
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}
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void init_op(zend_op *op TSRMLS_DC)
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{
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memset(op, 0, sizeof(zend_op));
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op->lineno = CG(zend_lineno);
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SET_UNUSED(op->result);
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}
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zend_op *get_next_op(zend_op_array *op_array TSRMLS_DC)
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{
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zend_uint next_op_num = op_array->last++;
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zend_op *next_op;
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if (next_op_num >= CG(context).opcodes_size) {
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if (op_array->fn_flags & ZEND_ACC_INTERACTIVE) {
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/* we messed up */
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zend_printf("Ran out of opcode space!\n"
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"You should probably consider writing this huge script into a file!\n");
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zend_bailout();
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}
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CG(context).opcodes_size *= 4;
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op_array_alloc_ops(op_array, CG(context).opcodes_size);
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}
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next_op = &(op_array->opcodes[next_op_num]);
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init_op(next_op TSRMLS_CC);
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return next_op;
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}
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int get_next_op_number(zend_op_array *op_array)
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{
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return op_array->last;
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}
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zend_brk_cont_element *get_next_brk_cont_element(zend_op_array *op_array)
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{
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op_array->last_brk_cont++;
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op_array->brk_cont_array = erealloc(op_array->brk_cont_array, sizeof(zend_brk_cont_element)*op_array->last_brk_cont);
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return &op_array->brk_cont_array[op_array->last_brk_cont-1];
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}
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static void zend_update_extended_info(zend_op_array *op_array TSRMLS_DC)
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{
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zend_op *opline = op_array->opcodes, *end=opline+op_array->last;
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while (opline<end) {
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if (opline->opcode == ZEND_EXT_STMT) {
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if (opline+1<end) {
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if ((opline+1)->opcode == ZEND_EXT_STMT) {
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opline->opcode = ZEND_NOP;
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opline++;
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continue;
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}
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if (opline+1<end) {
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opline->lineno = (opline+1)->lineno;
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}
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} else {
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opline->opcode = ZEND_NOP;
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}
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}
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opline++;
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}
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}
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static void zend_extension_op_array_handler(zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
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{
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if (extension->op_array_handler) {
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extension->op_array_handler(op_array);
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}
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}
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ZEND_API int pass_two(zend_op_array *op_array TSRMLS_DC)
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{
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zend_op *opline, *end;
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if (op_array->type!=ZEND_USER_FUNCTION && op_array->type!=ZEND_EVAL_CODE) {
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return 0;
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}
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if (CG(compiler_options) & ZEND_COMPILE_EXTENDED_INFO) {
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zend_update_extended_info(op_array TSRMLS_CC);
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}
|
|
if (CG(compiler_options) & ZEND_COMPILE_HANDLE_OP_ARRAY) {
|
|
zend_llist_apply_with_argument(&zend_extensions, (llist_apply_with_arg_func_t) zend_extension_op_array_handler, op_array TSRMLS_CC);
|
|
}
|
|
|
|
if (!(op_array->fn_flags & ZEND_ACC_INTERACTIVE) && CG(context).vars_size != op_array->last_var) {
|
|
op_array->vars = (zend_compiled_variable *) erealloc(op_array->vars, sizeof(zend_compiled_variable)*op_array->last_var);
|
|
CG(context).vars_size = op_array->last_var;
|
|
}
|
|
if (!(op_array->fn_flags & ZEND_ACC_INTERACTIVE) && CG(context).opcodes_size != op_array->last) {
|
|
op_array->opcodes = (zend_op *) erealloc(op_array->opcodes, sizeof(zend_op)*op_array->last);
|
|
CG(context).opcodes_size = op_array->last;
|
|
}
|
|
if (!(op_array->fn_flags & ZEND_ACC_INTERACTIVE) && CG(context).literals_size != op_array->last_literal) {
|
|
op_array->literals = (zend_literal*)erealloc(op_array->literals, sizeof(zend_literal) * op_array->last_literal);
|
|
CG(context).literals_size = op_array->last_literal;
|
|
}
|
|
|
|
opline = op_array->opcodes;
|
|
end = opline + op_array->last;
|
|
while (opline < end) {
|
|
if (opline->op1_type == IS_CONST) {
|
|
opline->op1.zv = &op_array->literals[opline->op1.constant].constant;
|
|
}
|
|
if (opline->op2_type == IS_CONST) {
|
|
opline->op2.zv = &op_array->literals[opline->op2.constant].constant;
|
|
}
|
|
switch (opline->opcode) {
|
|
case ZEND_GOTO:
|
|
if (Z_TYPE_P(opline->op2.zv) != IS_LONG) {
|
|
zend_resolve_goto_label(op_array, opline, 1 TSRMLS_CC);
|
|
}
|
|
/* break omitted intentionally */
|
|
case ZEND_JMP:
|
|
opline->op1.jmp_addr = &op_array->opcodes[opline->op1.opline_num];
|
|
break;
|
|
case ZEND_JMPZ:
|
|
case ZEND_JMPNZ:
|
|
case ZEND_JMPZ_EX:
|
|
case ZEND_JMPNZ_EX:
|
|
case ZEND_JMP_SET:
|
|
case ZEND_JMP_SET_VAR:
|
|
opline->op2.jmp_addr = &op_array->opcodes[opline->op2.opline_num];
|
|
break;
|
|
case ZEND_RETURN:
|
|
case ZEND_RETURN_BY_REF:
|
|
if (op_array->fn_flags & ZEND_ACC_GENERATOR) {
|
|
if (opline->op1_type != IS_CONST || Z_TYPE_P(opline->op1.zv) != IS_NULL) {
|
|
CG(zend_lineno) = opline->lineno;
|
|
zend_error(E_COMPILE_ERROR, "Generators cannot return values using \"return\"");
|
|
}
|
|
if (opline->opcode == ZEND_RETURN_BY_REF) {
|
|
opline->opcode = ZEND_RETURN;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
ZEND_VM_SET_OPCODE_HANDLER(opline);
|
|
opline++;
|
|
}
|
|
|
|
op_array->fn_flags |= ZEND_ACC_DONE_PASS_TWO;
|
|
return 0;
|
|
}
|
|
|
|
int print_class(zend_class_entry *class_entry TSRMLS_DC)
|
|
{
|
|
printf("Class %s:\n", class_entry->name);
|
|
zend_hash_apply(&class_entry->function_table, (apply_func_t) pass_two TSRMLS_CC);
|
|
printf("End of class %s.\n\n", class_entry->name);
|
|
return 0;
|
|
}
|
|
|
|
ZEND_API unary_op_type get_unary_op(int opcode)
|
|
{
|
|
switch (opcode) {
|
|
case ZEND_BW_NOT:
|
|
return (unary_op_type) bitwise_not_function;
|
|
break;
|
|
case ZEND_BOOL_NOT:
|
|
return (unary_op_type) boolean_not_function;
|
|
break;
|
|
default:
|
|
return (unary_op_type) NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
ZEND_API binary_op_type get_binary_op(int opcode)
|
|
{
|
|
switch (opcode) {
|
|
case ZEND_ADD:
|
|
case ZEND_ASSIGN_ADD:
|
|
return (binary_op_type) add_function;
|
|
break;
|
|
case ZEND_SUB:
|
|
case ZEND_ASSIGN_SUB:
|
|
return (binary_op_type) sub_function;
|
|
break;
|
|
case ZEND_MUL:
|
|
case ZEND_ASSIGN_MUL:
|
|
return (binary_op_type) mul_function;
|
|
break;
|
|
case ZEND_DIV:
|
|
case ZEND_ASSIGN_DIV:
|
|
return (binary_op_type) div_function;
|
|
break;
|
|
case ZEND_MOD:
|
|
case ZEND_ASSIGN_MOD:
|
|
return (binary_op_type) mod_function;
|
|
break;
|
|
case ZEND_SL:
|
|
case ZEND_ASSIGN_SL:
|
|
return (binary_op_type) shift_left_function;
|
|
break;
|
|
case ZEND_SR:
|
|
case ZEND_ASSIGN_SR:
|
|
return (binary_op_type) shift_right_function;
|
|
break;
|
|
case ZEND_CONCAT:
|
|
case ZEND_ASSIGN_CONCAT:
|
|
return (binary_op_type) concat_function;
|
|
break;
|
|
case ZEND_IS_IDENTICAL:
|
|
return (binary_op_type) is_identical_function;
|
|
break;
|
|
case ZEND_IS_NOT_IDENTICAL:
|
|
return (binary_op_type) is_not_identical_function;
|
|
break;
|
|
case ZEND_IS_EQUAL:
|
|
return (binary_op_type) is_equal_function;
|
|
break;
|
|
case ZEND_IS_NOT_EQUAL:
|
|
return (binary_op_type) is_not_equal_function;
|
|
break;
|
|
case ZEND_IS_SMALLER:
|
|
return (binary_op_type) is_smaller_function;
|
|
break;
|
|
case ZEND_IS_SMALLER_OR_EQUAL:
|
|
return (binary_op_type) is_smaller_or_equal_function;
|
|
break;
|
|
case ZEND_BW_OR:
|
|
case ZEND_ASSIGN_BW_OR:
|
|
return (binary_op_type) bitwise_or_function;
|
|
break;
|
|
case ZEND_BW_AND:
|
|
case ZEND_ASSIGN_BW_AND:
|
|
return (binary_op_type) bitwise_and_function;
|
|
break;
|
|
case ZEND_BW_XOR:
|
|
case ZEND_ASSIGN_BW_XOR:
|
|
return (binary_op_type) bitwise_xor_function;
|
|
break;
|
|
case ZEND_BOOL_XOR:
|
|
return (binary_op_type) boolean_xor_function;
|
|
break;
|
|
default:
|
|
return (binary_op_type) NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*/
|