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teds.c
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teds.c
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/*
+----------------------------------------------------------------------+
| teds extension for PHP |
| See COPYING file for further copyright information |
+----------------------------------------------------------------------+
| Author: Tyson Andre <[email protected]> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "php.h"
#if PHP_VERSION_ID < 80000
#error PHP versions prior to php 8.0 are not supported
#endif
#if PHP_VERSION_ID < 80100
#define RETURN_COPY_DEREF(zv) do { ZVAL_COPY_DEREF(return_value, zv); return; } while (0)
#endif
#include <ctype.h>
#include "zend_interfaces.h"
#include "zend_types.h"
#include "zend_smart_str.h"
#include "zend_strtod_int.h" /* WORDS_BIGENDIAN */
#include "ext/spl/spl_iterators.h"
#include "ext/standard/php_string.h"
#include "ext/standard/info.h"
#include "teds_bitvector.h"
#include "teds_deque.h"
#include "teds_cachediterable.h"
#if PHP_VERSION_ID >= 80100
#include "teds_emptycollection.h"
#endif
#include "teds_exceptions.h"
#include "teds_lowmemoryvector.h"
#include "teds_immutableiterable.h"
#include "teds_immutablesequence.h"
#include "teds_immutablesortedstringset.h"
#include "teds_intvector.h"
#include "teds_interfaces.h"
#include "teds_mutableiterable.h"
#include "teds_stricttreemap.h"
#include "teds_stricttreeset.h"
#include "teds_strictheap.h"
#include "teds_strictsortedvectormap.h"
#include "teds_strictsortedvectorset.h"
#include "teds_stricthashmap.h"
#include "teds_stricthashset.h"
#include "teds_vector.h"
#include "teds.h"
#include "teds_arginfo.h"
#include "php_teds.h"
#if PHP_VERSION_ID >= 80100
#include "zend_enum.h"
#endif
#define TEDS_STR_DEFS \
X(found)
#define TEDS_STR(x) teds_str_ ## str
#define X(str) \
static zend_string *TEDS_STR(str);
TEDS_STR_DEFS
#undef X
#ifndef ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE
#define ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(pass_by_ref, name, type_hint, allow_null, default_value) \
ZEND_ARG_TYPE_INFO(pass_by_ref, name, type_hint, allow_null)
#endif
/* For compatibility with older PHP versions */
#ifndef ZEND_PARSE_PARAMETERS_NONE
#define ZEND_PARSE_PARAMETERS_NONE() \
ZEND_PARSE_PARAMETERS_START(0, 0) \
ZEND_PARSE_PARAMETERS_END()
#endif
/* Copied from array_reduce implementation in https://github.com/php/php-src/blob/master/ext/standard/array.c */
static zend_always_inline void teds_array_reduce(HashTable *htbl, zend_fcall_info fci, zend_fcall_info_cache fci_cache, zval* return_value) /* {{{ */
{
zval args[2];
zval *operand;
zval retval;
if (zend_hash_num_elements(htbl) == 0) {
return;
}
fci.retval = &retval;
fci.param_count = 2;
ZEND_HASH_FOREACH_VAL(htbl, operand) {
ZVAL_COPY_VALUE(&args[0], return_value);
ZVAL_COPY(&args[1], operand);
fci.params = args;
if (zend_call_function(&fci, &fci_cache) == SUCCESS && Z_TYPE(retval) != IS_UNDEF) {
zval_ptr_dtor(&args[1]);
zval_ptr_dtor(&args[0]);
ZVAL_COPY_VALUE(return_value, &retval);
if (UNEXPECTED(Z_ISREF_P(return_value))) {
zend_unwrap_reference(return_value);
}
} else {
zval_ptr_dtor(&args[1]);
zval_ptr_dtor(&args[0]);
RETURN_NULL();
}
} ZEND_HASH_FOREACH_END();
}
/* }}} */
typedef struct {
zend_fcall_info fci;
zend_fcall_info_cache fcc;
zval args[2];
} traversable_reduce_data;
static int teds_traversable_reduce_elem(zend_object_iterator *iter, void *puser) /* {{{ */
{
traversable_reduce_data *reduce_data = puser;
zend_fcall_info *fci = &reduce_data->fci;
ZEND_ASSERT(ZEND_FCI_INITIALIZED(*fci));
zval *operand = iter->funcs->get_current_data(iter);
if (UNEXPECTED(!operand || EG(exception))) {
return ZEND_HASH_APPLY_STOP;
}
ZVAL_DEREF(operand);
ZVAL_COPY_VALUE(&reduce_data->args[0], fci->retval);
ZVAL_COPY(&reduce_data->args[1], operand);
ZVAL_NULL(fci->retval);
int result = zend_call_function(&reduce_data->fci, &reduce_data->fcc);
zval_ptr_dtor(operand);
zval_ptr_dtor(&reduce_data->args[0]);
if (UNEXPECTED(result == FAILURE || EG(exception))) {
return ZEND_HASH_APPLY_STOP;
}
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
static zend_always_inline void teds_traversable_reduce(zval *obj, zend_fcall_info fci, zend_fcall_info_cache fci_cache, zval* return_value) /* {{{ */
{
traversable_reduce_data reduce_data;
reduce_data.fci = fci;
reduce_data.fci.retval = return_value;
reduce_data.fci.param_count = 2;
reduce_data.fci.params = reduce_data.args;
reduce_data.fcc = fci_cache;
spl_iterator_apply(obj, teds_traversable_reduce_elem, (void*)&reduce_data);
}
/* }}} */
static inline void php_array_until(zval *return_value, HashTable *htbl, zend_fcall_info fci, zend_fcall_info_cache fci_cache, int stop_value, int negate) /* {{{ */
{
zval args[1];
bool have_callback = 0;
zval *operand;
zval retval;
int result;
if (zend_hash_num_elements(htbl) == 0) {
RETURN_BOOL(!stop_value ^ negate);
}
if (ZEND_FCI_INITIALIZED(fci)) {
have_callback = 1;
fci.retval = &retval;
fci.param_count = 1;
fci.params = args;
}
ZEND_HASH_FOREACH_VAL(htbl, operand) {
if (have_callback) {
ZVAL_COPY(&args[0], operand);
/* Treat the operand like an array of size 1 */
result = zend_call_function(&fci, &fci_cache);
zval_ptr_dtor(operand);
if (result == FAILURE) {
return;
}
const bool retval_true = zend_is_true(&retval);
zval_ptr_dtor(&retval);
/* The user-provided callback rarely returns refcounted values. */
if (retval_true == stop_value) {
RETURN_BOOL(stop_value ^ negate);
}
} else {
if (zend_is_true(operand) == stop_value) {
RETURN_BOOL(stop_value ^ negate);
}
}
} ZEND_HASH_FOREACH_END();
RETURN_BOOL(!stop_value ^ negate);
}
/* }}} */
typedef struct {
int stop_value;
int result;
zend_long has_callback;
zend_fcall_info fci;
zend_fcall_info_cache fcc;
bool found;
} php_iterator_until_info;
static int teds_traversable_func_until(zend_object_iterator *iter, void *puser) /* {{{ */
{
zend_fcall_info fci;
zval retval;
php_iterator_until_info *until_info = (php_iterator_until_info*) puser;
int result;
bool stop;
fci = until_info->fci;
if (ZEND_FCI_INITIALIZED(fci)) {
zval *operand = iter->funcs->get_current_data(iter);
if (UNEXPECTED(!operand || EG(exception))) {
until_info->result = FAILURE;
return ZEND_HASH_APPLY_STOP;
}
ZVAL_DEREF(operand);
fci.retval = &retval;
fci.param_count = 1;
/* Use the operand like an array of size 1 */
fci.params = operand;
fci.retval = &retval;
Z_TRY_ADDREF_P(operand);
result = zend_call_function(&fci, &until_info->fcc);
zval_ptr_dtor(operand);
if (result == FAILURE) {
until_info->result = FAILURE;
return ZEND_HASH_APPLY_STOP;
}
stop = zend_is_true(&retval) == until_info->stop_value;
zval_ptr_dtor(&retval);
} else {
zval *operand = iter->funcs->get_current_data(iter);
if (UNEXPECTED(!operand || EG(exception))) {
return ZEND_HASH_APPLY_STOP;
}
ZVAL_DEREF(operand);
stop = zend_is_true(operand) == until_info->stop_value;
zval_ptr_dtor(operand);
}
if (stop) {
until_info->found = true;
return ZEND_HASH_APPLY_STOP;
}
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
typedef struct {
zval target;
int result;
bool found;
} php_traversable_search_info;
static int teds_traversable_func_search_value(zend_object_iterator *iter, void *puser) /* {{{ */
{
php_traversable_search_info *search_info = (php_traversable_search_info*) puser;
zval *operand = iter->funcs->get_current_data(iter);
if (UNEXPECTED(!operand || EG(exception))) {
search_info->result = FAILURE;
return ZEND_HASH_APPLY_STOP;
}
ZVAL_DEREF(operand);
bool stop = fast_is_identical_function(operand, &search_info->target);
if (stop) {
search_info->found = true;
return ZEND_HASH_APPLY_STOP;
}
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
static inline void teds_iterable_until(INTERNAL_FUNCTION_PARAMETERS, int stop_value, int negate) /* {{{ */
{
zval *input;
zend_fcall_info fci = empty_fcall_info;
zend_fcall_info_cache fci_cache = empty_fcall_info_cache;
ZEND_PARSE_PARAMETERS_START(1, 2)
Z_PARAM_ITERABLE(input)
Z_PARAM_OPTIONAL
Z_PARAM_FUNC_OR_NULL(fci, fci_cache)
ZEND_PARSE_PARAMETERS_END();
switch (Z_TYPE_P(input)) {
case IS_ARRAY:
php_array_until(return_value, Z_ARRVAL_P(input), fci, fci_cache, stop_value, negate);
return;
case IS_OBJECT: {
ZEND_ASSERT(instanceof_function(Z_OBJCE_P(input), zend_ce_traversable));
php_iterator_until_info until_info;
until_info.fci = fci;
until_info.fcc = fci_cache;
until_info.stop_value = stop_value;
until_info.result = SUCCESS;
until_info.found = false;
if (spl_iterator_apply(input, teds_traversable_func_until, (void*)&until_info) == SUCCESS && until_info.result == SUCCESS) {
RETURN_BOOL(!(until_info.found ^ stop_value ^ negate));
}
return;
}
EMPTY_SWITCH_DEFAULT_CASE();
}
}
/* Determines whether the predicate holds for all elements in the array */
PHP_FUNCTION(Teds_all)
{
teds_iterable_until(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0, 0);
}
/* }}} */
/* {{{ Determines whether the predicate holds for at least one element in the array */
PHP_FUNCTION(Teds_any)
{
teds_iterable_until(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1, 0);
}
/* }}} */
/* {{{ Determines whether the predicate holds for no elements of the array */
PHP_FUNCTION(Teds_none)
{
teds_iterable_until(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1, 1);
}
/* }}} */
/* Determines whether the predicate holds for all elements in the array */
PHP_FUNCTION(Teds_includes_value)
{
zval *input;
zval *value;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_ITERABLE(input)
Z_PARAM_ZVAL(value)
ZEND_PARSE_PARAMETERS_END();
switch (Z_TYPE_P(input)) {
case IS_ARRAY: {
zval *entry;
ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(input), entry) {
ZVAL_DEREF(entry);
if (fast_is_identical_function(value, entry)) {
RETURN_TRUE;
}
} ZEND_HASH_FOREACH_END();
RETURN_FALSE;
return;
}
case IS_OBJECT: {
ZEND_ASSERT(instanceof_function(Z_OBJCE_P(input), zend_ce_traversable));
php_traversable_search_info search_info;
search_info.result = SUCCESS;
search_info.found = false;
ZVAL_COPY_VALUE(&search_info.target, value);
if (spl_iterator_apply(input, teds_traversable_func_search_value, (void*)&search_info) == SUCCESS && search_info.result == SUCCESS) {
RETURN_BOOL(search_info.found);
}
return;
}
EMPTY_SWITCH_DEFAULT_CASE();
}
}
/* }}} */
/* {{{ folds values */
PHP_FUNCTION(Teds_fold)
{
zval *input;
zend_fcall_info fci;
zend_fcall_info_cache fci_cache;
zval *initial = NULL;
ZEND_PARSE_PARAMETERS_START(3, 3)
Z_PARAM_ITERABLE(input)
Z_PARAM_FUNC(fci, fci_cache)
Z_PARAM_ZVAL(initial)
ZEND_PARSE_PARAMETERS_END();
ZVAL_COPY(return_value, initial);
switch (Z_TYPE_P(input)) {
case IS_ARRAY:
teds_array_reduce(Z_ARRVAL_P(input), fci, fci_cache, return_value);
return;
case IS_OBJECT: {
ZEND_ASSERT(instanceof_function(Z_OBJCE_P(input), zend_ce_traversable));
teds_traversable_reduce(input, fci, fci_cache, return_value);
return;
}
EMPTY_SWITCH_DEFAULT_CASE();
}
}
/* }}} */
static inline zend_array* teds_move_zend_array_from_entries(teds_stricthashset_entries *array) {
const size_t size = array->nNumOfElements;
ZEND_ASSERT(size > 0);
/* Traversable can have more elements than HT_MAX_SIZE */
HashTable *result = teds_new_array_check_overflow(size);
zend_hash_real_init_packed(result);
ZEND_HASH_FILL_PACKED(result) {
zval *val;
ZEND_ASSERT(array->nNumOfElements == array->nNumUsed);
/* Because there are no removals, we can guarantee there are no gaps (IS_UNDEF) to skip over.
* Surprisingly, this is faster enough than TEDS_STRICTHASHSET_FOREACH_VAL to notice.
* See benchmarks/unique_values.php */
TEDS_STRICTHASHSET_FOREACH_VAL_ASSERT_NO_GAPS(array, val) {
ZEND_HASH_FILL_ADD(val);
} TEDS_STRICTHASHSET_FOREACH_END();
} ZEND_HASH_FILL_END();
teds_stricthashset_entries_release(array);
return result;
}
/* Check if this is the hash table of a PHP array satisfying array_is_list() where none of the top level array values are references. */
static zend_always_inline bool teds_is_list_of_non_references(HashTable *ht) {
zend_long n;
zend_string *str;
zval *val;
zend_long i = 0;
ZEND_HASH_FOREACH_KEY_VAL(ht, n, str, val) {
if (n != i || str != NULL || Z_TYPE_P(val) == IS_REFERENCE) {
return false;
}
i++;
} ZEND_HASH_FOREACH_END();
return true;
}
static inline void teds_array_unique_values(HashTable *ht, zval *return_value)
{
const uint32_t ht_size = zend_hash_num_elements(ht);
if (ht_size <= 1) {
if (ht_size == 0) {
RETURN_EMPTY_ARRAY();
}
HashPosition start = 0;
zval *value = zend_hash_get_current_data_ex(ht, &start);
ZEND_ASSERT(value != NULL);
if (UNEXPECTED(Z_TYPE_P(value) == IS_REFERENCE)) {
ZVAL_DEREF(value);
} else {
zend_string *str_index;
zend_ulong num_index;
if (zend_hash_get_current_key_ex(ht, &str_index, &num_index, &start) == HASH_KEY_IS_LONG && num_index == 0) {
/* The input array is already a single-element list of non-references of size 1 */
GC_TRY_ADDREF(ht);
RETURN_ARR(ht);
}
}
HashTable *result = zend_new_array(1);
Z_TRY_ADDREF_P(value);
zend_hash_next_index_insert(result, value);
RETURN_ARR(result);
}
teds_stricthashset_entries array;
teds_stricthashset_entries_init_from_array(&array, ht);
if (UNEXPECTED(EG(exception))) {
RETURN_THROWS();
}
ZEND_ASSERT(array.nNumOfElements <= ht_size);
if (ht_size == array.nNumOfElements && teds_is_list_of_non_references(ht)) {
/* Save memory by returning the original list when it's safe to do so. */
GC_TRY_ADDREF(ht);
teds_stricthashset_entries_dtor(&array);
RETURN_ARR(ht);
}
RETURN_ARR(teds_move_zend_array_from_entries(&array));
}
static inline void teds_traversable_unique_values(zend_object *obj, zval *return_value)
{
teds_stricthashset_entries array;
teds_stricthashset_entries_init_from_traversable(&array, obj);
if (UNEXPECTED(EG(exception))) {
RETURN_THROWS();
}
if (teds_stricthashset_entries_empty_capacity(&array)) {
RETURN_EMPTY_ARRAY();
}
RETVAL_ARR(teds_move_zend_array_from_entries(&array));
}
/* {{{ extracts unique values from an iterable with a hash table */
PHP_FUNCTION(Teds_unique_values)
{
zval *iterable;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_ITERABLE(iterable)
ZEND_PARSE_PARAMETERS_END();
switch (Z_TYPE_P(iterable)) {
case IS_ARRAY:
teds_array_unique_values(Z_ARRVAL_P(iterable), return_value);
return;
case IS_OBJECT: {
ZEND_ASSERT(instanceof_function(Z_OBJCE_P(iterable), zend_ce_traversable));
teds_traversable_unique_values(Z_OBJ_P(iterable), return_value);
return;
}
EMPTY_SWITCH_DEFAULT_CASE();
}
}
/* }}} */
static HashTable *teds_binary_search_create_result(bool found, zval *key, zval *value)
{
zend_array *return_ht = zend_new_array(3);
{
zval tmp;
ZVAL_BOOL(&tmp, found);
zend_hash_add_new(return_ht, TEDS_STR(found), &tmp);
}
/* Caller should increment references */
zend_hash_add_new(return_ht, ZSTR_KNOWN(ZEND_STR_KEY), key);
ZVAL_DEREF(value);
Z_TRY_ADDREF_P(value);
zend_hash_add_new(return_ht, ZSTR_KNOWN(ZEND_STR_VALUE), value);
return return_ht;
}
#if PHP_VERSION_ID >= 80200
static zend_always_inline HashTable *teds_binary_search_for_zvals(HashTable *ht, zval *target, const bool use_key, const bool have_callback, zend_fcall_info *fci, zend_fcall_info_cache *fci_cache, zval *const args, zval *const retval)
{
zval *const orig_start = ht->arPacked;
zval *start = orig_start;
zval *end = start + ht->nNumUsed;
zval *largest_smaller_zval_ptr = NULL;
packed_search_start:
while (start < end) {
zval *const mid_orig = start + (end - start) / 2;
zval *mid = mid_orig; /* mid <= start, mid < end */
while (Z_TYPE_P(mid) == IS_UNDEF) {
mid++;
if (mid >= end) {
end = mid_orig;
goto packed_search_start;
}
}
zend_long comparison_result;
if (have_callback) {
ZVAL_COPY(&args[0], target);
zval operator;
if (use_key) {
ZVAL_LONG(&operator, mid - orig_start);
} else {
ZVAL_COPY_DEREF(&operator, mid);
}
ZVAL_COPY_VALUE(&args[1], &operator);
zend_result result = zend_call_function(fci, fci_cache);
zval_ptr_dtor(&operator);
zval_ptr_dtor(target);
if (UNEXPECTED(result == FAILURE)) {
return NULL;
}
comparison_result = zval_get_long(retval);
zval_ptr_dtor(retval);
} else {
if (use_key) {
zval key_zv;
ZVAL_LONG(&key_zv, mid - orig_start);
comparison_result = zend_compare(target, &key_zv);
} else {
comparison_result = zend_compare(target, mid);
}
}
if (UNEXPECTED(EG(exception))) {
return NULL;
}
if (comparison_result == 0) {
zval tmp;
ZVAL_LONG(&tmp, mid - orig_start);
return teds_binary_search_create_result(true, &tmp, mid);
}
if (comparison_result > 0) {
largest_smaller_zval_ptr = mid;
start = mid + 1;
} else {
end = mid_orig;
}
}
if (largest_smaller_zval_ptr == NULL) {
return NULL;
}
zval tmp;
ZVAL_LONG(&tmp, largest_smaller_zval_ptr - orig_start);
return teds_binary_search_create_result(false, &tmp, largest_smaller_zval_ptr);
}
#endif
static zend_always_inline HashTable *teds_binary_search_for_bucket(HashTable *ht, zval *target, const bool use_key, const bool have_callback, zend_fcall_info *fci, zend_fcall_info_cache *fci_cache, zval *const args, zval *const retval)
{
Bucket *start = ht->arData;
Bucket *end = start + ht->nNumUsed;
Bucket *largest_smaller_bucket = NULL;
bucket_search_start:
while (start < end) {
Bucket *const mid_orig = start + (end - start) / 2;
Bucket *mid = mid_orig; /* mid <= start, mid < end */
while (Z_TYPE(mid->val) == IS_UNDEF) {
mid++;
if (mid >= end) {
end = mid_orig;
goto bucket_search_start;
}
}
zend_long comparison_result;
if (have_callback) {
ZVAL_COPY(&args[0], target);
zval operator;
if (use_key) {
if (mid->key) {
zend_string_addref(mid->key);
ZVAL_STR(&operator, mid->key);
} else {
ZVAL_LONG(&operator, mid->h);
}
} else {
ZVAL_COPY_DEREF(&operator, &mid->val);
}
ZVAL_COPY_VALUE(&args[1], &operator);
zend_result result = zend_call_function(fci, fci_cache);
zval_ptr_dtor(&operator);
zval_ptr_dtor(target);
if (UNEXPECTED(result == FAILURE)) {
return NULL;
}
comparison_result = zval_get_long(retval);
zval_ptr_dtor(retval);
} else {
if (use_key) {
zval key_zv;
if (mid->key) {
ZVAL_STR(&key_zv, mid->key);
} else {
ZVAL_LONG(&key_zv, mid->h);
}
comparison_result = zend_compare(target, &key_zv);
} else {
comparison_result = zend_compare(target, &mid->val);
}
}
if (UNEXPECTED(EG(exception))) {
return NULL;
}
if (comparison_result == 0) {
zval tmp;
if (mid->key) {
zend_string_addref(mid->key);
ZVAL_STR(&tmp, mid->key);
} else {
ZVAL_LONG(&tmp, mid->h);
}
return teds_binary_search_create_result(true, &tmp, &mid->val);
}
if (comparison_result > 0) {
largest_smaller_bucket = mid;
start = mid + 1;
} else {
end = mid_orig;
}
}
if (largest_smaller_bucket == NULL) {
return NULL;
}
zval tmp;
if (largest_smaller_bucket->key) {
zend_string_addref(largest_smaller_bucket->key);
ZVAL_STR(&tmp, largest_smaller_bucket->key);
} else {
ZVAL_LONG(&tmp, largest_smaller_bucket->h);
}
return teds_binary_search_create_result(false, &tmp, &largest_smaller_bucket->val);
}
/* Perform a binary search on a sorted array (Assumed to be sorted by value and/or key, depending on $flags) */
PHP_FUNCTION(Teds_binary_search)
{
HashTable *ht;
zend_fcall_info fci = empty_fcall_info;
zend_fcall_info_cache fci_cache = empty_fcall_info_cache;
zval *target;
zend_bool use_key = false;
ZEND_PARSE_PARAMETERS_START(2, 4)
Z_PARAM_ARRAY_HT(ht)
Z_PARAM_ZVAL(target)
Z_PARAM_OPTIONAL
Z_PARAM_FUNC_OR_NULL(fci, fci_cache)
Z_PARAM_BOOL(use_key)
ZEND_PARSE_PARAMETERS_END();
if (zend_hash_num_elements(ht) > 0) {
bool have_callback = false;
zval retval;
zval args[2];
if (ZEND_FCI_INITIALIZED(fci)) {
have_callback = true;
fci.retval = &retval;
fci.param_count = 2;
fci.params = args;
}
HashTable *return_ht;
#if PHP_VERSION_ID >= 80200
if (HT_IS_PACKED(ht)) {
return_ht = teds_binary_search_for_zvals(ht, target, use_key, have_callback, &fci, &fci_cache, args, &retval);
}
else
#endif
{
return_ht = teds_binary_search_for_bucket(ht, target, use_key, have_callback, &fci, &fci_cache, args, &retval);
}
if (return_ht != NULL) {
RETURN_ARR(return_ht);
}
if (UNEXPECTED(EG(exception))) {
RETURN_THROWS();
}
}
zval tmp;
ZVAL_NULL(&tmp);
RETURN_ARR(teds_binary_search_create_result(false, &tmp, &tmp));
}
/* }}} */
// Source: php_array_find from php-src/ext/standard/array.c
static zend_always_inline void teds_array_find(HashTable *htbl, zend_fcall_info fci, zend_fcall_info_cache fci_cache, zval* return_value, zval *default_value) /* {{{ */
{
zval retval;
zval *operand;
if (zend_hash_num_elements(htbl) > 0) {
fci.retval = &retval;
fci.param_count = 1;
ZEND_HASH_FOREACH_VAL(htbl, operand) {
fci.params = operand;
Z_TRY_ADDREF_P(operand);
if (zend_call_function(&fci, &fci_cache) == SUCCESS) {
bool found = zend_is_true(&retval);
if (found) {
ZVAL_COPY_VALUE(return_value, operand);
return;
} else {
zval_ptr_dtor(operand);
}
} else {
zval_ptr_dtor(operand);
return;
}
} ZEND_HASH_FOREACH_END();
}
if (default_value) {
ZVAL_COPY(return_value, default_value);
} else {
ZVAL_NULL(return_value);
}
}
/* }}} */
typedef struct {
zend_fcall_info fci;
zend_fcall_info_cache fcc;
zval *return_value;
bool found;
} traversable_find_data;
static int teds_traversable_find_elem(zend_object_iterator *iter, void *puser) /* {{{ */
{
zval retval;
traversable_find_data *find_data = puser;
zend_fcall_info *fci = &find_data->fci;
ZEND_ASSERT(ZEND_FCI_INITIALIZED(*fci));
zval *operand = iter->funcs->get_current_data(iter);
if (UNEXPECTED(!operand || EG(exception))) {
return ZEND_HASH_APPLY_STOP;
}
ZVAL_DEREF(operand);
// Treat this as a 1-element array.
fci->params = operand;
fci->retval = &retval;
Z_TRY_ADDREF_P(operand);
int result = zend_call_function(&find_data->fci, &find_data->fcc);
if (UNEXPECTED(result == FAILURE || EG(exception))) {
return ZEND_HASH_APPLY_STOP;
}
fci->retval = &retval;
bool found = zend_is_true(&retval);
zval_ptr_dtor(&retval);
if (UNEXPECTED(EG(exception))) {
return ZEND_HASH_APPLY_STOP;
}
if (found) {
ZVAL_COPY_VALUE(find_data->return_value, operand);
find_data->found = 1;
return ZEND_HASH_APPLY_STOP;
}
zval_ptr_dtor(operand);
return ZEND_HASH_APPLY_KEEP;
}
static zend_always_inline void teds_traversable_find(zval *obj, zend_fcall_info fci, zend_fcall_info_cache fci_cache, zval* return_value, zval *default_value) /* {{{ */
{
traversable_find_data find_data;
find_data.fci = fci;
find_data.fci.param_count = 1;
find_data.fcc = fci_cache;
find_data.return_value = return_value;
find_data.found = 0;
if (spl_iterator_apply(obj, teds_traversable_find_elem, (void*)&find_data) != SUCCESS || EG(exception)) {
return;
}
if (find_data.found) {
return;
}
if (default_value) {
ZVAL_COPY(return_value, default_value);
} else {
ZVAL_NULL(return_value);
}
}
/* }}} */
/* {{{ Finds the first value or returns the default */
PHP_FUNCTION(Teds_find)
{
zval *input;
zend_fcall_info fci;
zend_fcall_info_cache fci_cache;
zval *default_value = NULL;
ZEND_PARSE_PARAMETERS_START(2, 3)
Z_PARAM_ITERABLE(input)
Z_PARAM_FUNC(fci, fci_cache)
Z_PARAM_OPTIONAL
Z_PARAM_ZVAL(default_value)
ZEND_PARSE_PARAMETERS_END();
switch (Z_TYPE_P(input)) {
case IS_ARRAY:
teds_array_find(Z_ARRVAL_P(input), fci, fci_cache, return_value, default_value);
return;
case IS_OBJECT: {
teds_traversable_find(input, fci, fci_cache, return_value, default_value);
return;
}
EMPTY_SWITCH_DEFAULT_CASE();
}
}
/* }}} */
/* {{{ Get the value of the first element of the array */
PHP_FUNCTION(Teds_array_value_first)
{
HashTable *target_hash;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_ARRAY_HT(target_hash)
ZEND_PARSE_PARAMETERS_END();
if (zend_hash_num_elements(target_hash) == 0) {
RETURN_NULL();
}
HashPosition pos = 0;
RETURN_COPY_DEREF(zend_hash_get_current_data_ex(target_hash, &pos));
}
/* }}} */
/* {{{ Get the value of the last element of the array */
PHP_FUNCTION(Teds_array_value_last)
{
HashTable *target_hash;
HashPosition pos;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_ARRAY_HT(target_hash)
ZEND_PARSE_PARAMETERS_END();
if (zend_hash_num_elements(target_hash) == 0) {
RETURN_NULL();
}
zend_hash_internal_pointer_end_ex(target_hash, &pos);
RETURN_COPY_DEREF(zend_hash_get_current_data_ex(target_hash, &pos));
}
/* }}} */
#define SPACESHIP_OP(n1, n2) ((n1) < (n2) ? -1 : (n1) > (n2) ? 1 : 0)
int teds_stable_compare_wrap(const void *v1, const void *v2) {
return teds_stable_compare(v1, v2);
}
zend_long teds_stable_compare(const zval *v1, const zval *v2) {
ZVAL_DEREF(v1);
ZVAL_DEREF(v2);
const zend_uchar t1 = Z_TYPE_P(v1);
const zend_uchar t2 = Z_TYPE_P(v2);
if (t1 != t2) {
if (((1 << t1) | (1 << t2)) & ~((1 << IS_LONG) | (1 << IS_DOUBLE))) {
/* At least one type is not a long or a double. */
return t1 < t2 ? -1 : 1;
}
if (t1 == IS_DOUBLE) {
ZEND_ASSERT(t2 == IS_LONG);
zend_long i2 = Z_LVAL_P(v2);
/* Windows long double is an alias of double. */
double n1 = Z_DVAL_P(v1);
double n2 = i2;
if (n1 != n2) {
return n1 < n2 ? -1 : 1;
}
if (EXPECTED(i2 == (zend_long)n1)) {
/* long before double */
return 1;
}
if (i2 > 0) {
zend_ulong i1 = (zend_ulong)n1;
return i1 < (zend_ulong) i2 ? -1 : 1;
} else {
zend_ulong i1 = (zend_ulong)-n1;
return i1 < (zend_ulong) -i2 ? 1 : -1;
}
} else {
ZEND_ASSERT(t1 == IS_LONG);
ZEND_ASSERT(t2 == IS_DOUBLE);
zend_long i1 = Z_LVAL_P(v1);
double n1 = i1;
double n2 = Z_DVAL_P(v2);
if (n1 != n2) {
return n2 < n1 ? 1 : -1;
}
if (EXPECTED(i1 == (zend_long)n2)) {
return -1;
}
if (i1 > 0) {
zend_ulong i2 = (zend_ulong)n2;
return ((zend_ulong)i1) < i2 ? -1 : 1;
} else {
zend_ulong i2 = (zend_ulong)-n2;
return ((zend_ulong)-i1) < i2 ? 1 : -1;
}
}
}
switch (t1) {
case IS_NULL:
case IS_FALSE:
case IS_TRUE:
return 0;
case IS_LONG:
return SPACESHIP_OP(Z_LVAL_P(v1), Z_LVAL_P(v2));
case IS_DOUBLE: {
double n1 = Z_DVAL_P(v1);
double n2 = Z_DVAL_P(v2);
if (n1 == n2) {
return 0;
}
if (UNEXPECTED(teds_is_nan(n2))) {
/* Treat INF as smaller than NAN */
return teds_is_nan(n1) ? 0 : -1;
}