/* {{{ proto Closure Closure::bind(callable old, object to [, mixed scope])
Create a closure from another one and bind to another object and scope */
ZEND_METHOD(Closure, bind)
{
zval *newthis, *zclosure, *scope_arg = NULL;
zend_closure *closure, *new_closure;
zend_class_entry *ce, *called_scope;
if (zend_parse_method_parameters(ZEND_NUM_ARGS(), getThis(), "Oo!|z", &zclosure, zend_ce_closure, &newthis, &scope_arg) == FAILURE) {
return;
}
closure = (zend_closure *)Z_OBJ_P(zclosure);
if (scope_arg != NULL) { /* scope argument was given */
if (Z_TYPE_P(scope_arg) == IS_OBJECT) {
ce = Z_OBJCE_P(scope_arg);
} else if (Z_TYPE_P(scope_arg) == IS_NULL) {
ce = NULL;
} else {
zend_string *class_name = zval_get_string(scope_arg);
if (zend_string_equals_literal(class_name, "static")) {
ce = closure->func.common.scope;
} else if ((ce = zend_lookup_class_ex(class_name, NULL, 1)) == NULL) {
zend_error(E_WARNING, "Class '%s' not found", ZSTR_VAL(class_name));
zend_string_release(class_name);
RETURN_NULL();
}
zend_string_release(class_name);
}
} else { /* scope argument not given; do not change the scope by default */
ce = closure->func.common.scope;
}
if (!zend_valid_closure_binding(closure, newthis, ce)) {
return;
}
if (newthis) {
called_scope = Z_OBJCE_P(newthis);
} else {
called_scope = ce;
}
zend_create_closure(return_value, &closure->func, ce, called_scope, newthis);
new_closure = (zend_closure *) Z_OBJ_P(return_value);
/* Runtime cache relies on bound scope to be immutable, hence we need a separate rt cache in case scope changed */
if (ZEND_USER_CODE(closure->func.type) && (closure->func.common.scope != new_closure->func.common.scope || (closure->func.op_array.fn_flags & ZEND_ACC_NO_RT_ARENA))) {
new_closure->func.op_array.run_time_cache = emalloc(new_closure->func.op_array.cache_size);
memset(new_closure->func.op_array.run_time_cache, 0, new_closure->func.op_array.cache_size);
new_closure->func.op_array.fn_flags |= ZEND_ACC_NO_RT_ARENA;
}
}
/* {{{ proto Closure Closure::bind(callable old, object to [, mixed scope])
Create a closure from another one and bind to another object and scope */
ZEND_METHOD(Closure, bind)
{
zval *newthis, *zclosure, *scope_arg = NULL;
zend_closure *closure;
zend_class_entry *ce, *called_scope;
if (zend_parse_method_parameters(ZEND_NUM_ARGS(), getThis(), "Oo!|z", &zclosure, zend_ce_closure, &newthis, &scope_arg) == FAILURE) {
return;
}
closure = (zend_closure *)Z_OBJ_P(zclosure);
if (scope_arg != NULL) { /* scope argument was given */
if (Z_TYPE_P(scope_arg) == IS_OBJECT) {
ce = Z_OBJCE_P(scope_arg);
} else if (Z_TYPE_P(scope_arg) == IS_NULL) {
ce = NULL;
} else {
zend_string *tmp_class_name;
zend_string *class_name = zval_get_tmp_string(scope_arg, &tmp_class_name);
if (zend_string_equals_literal(class_name, "static")) {
ce = closure->func.common.scope;
} else if ((ce = zend_lookup_class_ex(class_name, NULL, 1)) == NULL) {
zend_error(E_WARNING, "Class '%s' not found", ZSTR_VAL(class_name));
zend_string_release_ex(class_name, 0);
RETURN_NULL();
}
zend_tmp_string_release(tmp_class_name);
}
} else { /* scope argument not given; do not change the scope by default */
ce = closure->func.common.scope;
}
if (!zend_valid_closure_binding(closure, newthis, ce)) {
return;
}
if (newthis) {
called_scope = Z_OBJCE_P(newthis);
} else {
called_scope = ce;
}
zend_create_closure(return_value, &closure->func, ce, called_scope, newthis);
}
/* {{{ proto mixed Closure::call(object to [, mixed parameter] [, mixed ...] )
Call closure, binding to a given object with its class as the scope */
ZEND_METHOD(Closure, call)
{
zval *zclosure, *newthis, closure_result;
zend_closure *closure;
zend_fcall_info fci;
zend_fcall_info_cache fci_cache;
zend_function my_function;
zend_object *newobj;
fci.param_count = 0;
fci.params = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "o*", &newthis, &fci.params, &fci.param_count) == FAILURE) {
return;
}
zclosure = getThis();
closure = (zend_closure *) Z_OBJ_P(zclosure);
newobj = Z_OBJ_P(newthis);
if (!zend_valid_closure_binding(closure, newthis, Z_OBJCE_P(newthis))) {
return;
}
if (closure->func.common.fn_flags & ZEND_ACC_GENERATOR) {
zval new_closure;
zend_create_closure(&new_closure, &closure->func, Z_OBJCE_P(newthis), closure->called_scope, newthis);
closure = (zend_closure *) Z_OBJ(new_closure);
fci_cache.function_handler = &closure->func;
} else {
memcpy(&my_function, &closure->func, closure->func.type == ZEND_USER_FUNCTION ? sizeof(zend_op_array) : sizeof(zend_internal_function));
my_function.common.fn_flags &= ~ZEND_ACC_CLOSURE;
/* use scope of passed object */
my_function.common.scope = Z_OBJCE_P(newthis);
fci_cache.function_handler = &my_function;
/* Runtime cache relies on bound scope to be immutable, hence we need a separate rt cache in case scope changed */
if (ZEND_USER_CODE(my_function.type) && closure->func.common.scope != Z_OBJCE_P(newthis)) {
my_function.op_array.run_time_cache = emalloc(my_function.op_array.cache_size);
memset(my_function.op_array.run_time_cache, 0, my_function.op_array.cache_size);
}
}
fci_cache.called_scope = newobj->ce;
fci_cache.object = fci.object = newobj;
fci.size = sizeof(fci);
ZVAL_COPY_VALUE(&fci.function_name, zclosure);
fci.retval = &closure_result;
fci.no_separation = 1;
if (zend_call_function(&fci, &fci_cache) == SUCCESS && Z_TYPE(closure_result) != IS_UNDEF) {
if (Z_ISREF(closure_result)) {
zend_unwrap_reference(&closure_result);
}
ZVAL_COPY_VALUE(return_value, &closure_result);
}
if (fci_cache.function_handler->common.fn_flags & ZEND_ACC_GENERATOR) {
/* copied upon generator creation */
GC_DELREF(&closure->std);
} else if (ZEND_USER_CODE(my_function.type) && closure->func.common.scope != Z_OBJCE_P(newthis)) {
efree(my_function.op_array.run_time_cache);
}
}
/* {{{ proto mixed Closure::call(object to [, mixed parameter] [, mixed ...] )
Call closure, binding to a given object with its class as the scope */
ZEND_METHOD(Closure, call)
{
zval *zclosure, *newthis, closure_result;
zend_closure *closure;
zend_fcall_info fci;
zend_fcall_info_cache fci_cache;
zval *my_params;
int my_param_count = 0;
zend_function my_function;
zend_object *newobj;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "o*", &newthis, &my_params, &my_param_count) == FAILURE) {
return;
}
zclosure = getThis();
closure = (zend_closure *) Z_OBJ_P(zclosure);
newobj = Z_OBJ_P(newthis);
if (!zend_valid_closure_binding(closure, newthis, Z_OBJCE_P(newthis))) {
return;
}
/* This should never happen as closures will always be callable */
if (zend_fcall_info_init(zclosure, 0, &fci, &fci_cache, NULL, NULL) != SUCCESS) {
ZEND_ASSERT(0);
}
fci.retval = &closure_result;
fci.params = my_params;
fci.param_count = my_param_count;
fci.object = fci_cache.object = newobj;
fci_cache.initialized = 1;
fci_cache.called_scope = Z_OBJCE_P(newthis);
if (fci_cache.function_handler->common.fn_flags & ZEND_ACC_GENERATOR) {
zval new_closure;
zend_create_closure(&new_closure, fci_cache.function_handler, Z_OBJCE_P(newthis), closure->called_scope, newthis);
closure = (zend_closure *) Z_OBJ(new_closure);
fci_cache.function_handler = &closure->func;
} else {
memcpy(&my_function, fci_cache.function_handler, fci_cache.function_handler->type == ZEND_USER_FUNCTION ? sizeof(zend_op_array) : sizeof(zend_internal_function));
/* use scope of passed object */
my_function.common.scope = Z_OBJCE_P(newthis);
fci_cache.function_handler = &my_function;
/* Runtime cache relies on bound scope to be immutable, hence we need a separate rt cache in case scope changed */
if (ZEND_USER_CODE(my_function.type) && closure->func.common.scope != Z_OBJCE_P(newthis)) {
my_function.op_array.run_time_cache = emalloc(my_function.op_array.cache_size);
memset(my_function.op_array.run_time_cache, 0, my_function.op_array.cache_size);
}
}
if (zend_call_function(&fci, &fci_cache) == SUCCESS && Z_TYPE(closure_result) != IS_UNDEF) {
ZVAL_COPY_VALUE(return_value, &closure_result);
}
if (fci_cache.function_handler->common.fn_flags & ZEND_ACC_GENERATOR) {
/* copied upon generator creation */
--GC_REFCOUNT(&closure->std);
} else if (ZEND_USER_CODE(my_function.type) && closure->func.common.scope != Z_OBJCE_P(newthis)) {
efree(my_function.op_array.run_time_cache);
}
}
