/* Declare constants */
int zephir_declare_class_constant(zend_class_entry *ce, const char *name, size_t name_length, zval *value)
{
if (Z_CONSTANT_P(value)) {
ce->ce_flags &= ~ZEND_ACC_CONSTANTS_UPDATED;
}
ZVAL_NEW_PERSISTENT_REF(value, value);
return zend_hash_str_update(&ce->constants_table, name, name_length, value) ?
SUCCESS : FAILURE;
}
static void zend_try_inline_call(zend_op_array *op_array, zend_op *fcall, zend_op *opline, zend_function *func)
{
if (func->type == ZEND_USER_FUNCTION
&& !(func->op_array.fn_flags & (ZEND_ACC_ABSTRACT|ZEND_ACC_HAS_TYPE_HINTS))
&& fcall->extended_value >= func->op_array.required_num_args
&& func->op_array.opcodes[func->op_array.num_args].opcode == ZEND_RETURN) {
zend_op *ret_opline = func->op_array.opcodes + func->op_array.num_args;
if (ret_opline->op1_type == IS_CONST) {
uint32_t i, num_args = func->op_array.num_args;
num_args += (func->op_array.fn_flags & ZEND_ACC_VARIADIC) != 0;
if (fcall->opcode == ZEND_INIT_METHOD_CALL && fcall->op1_type == IS_UNUSED) {
/* TODO: we can't inlne methods, because $this may be used
* not in object context ???
*/
return;
}
for (i = 0; i < num_args; i++) {
/* Don't inline functions with by-reference arguments. This would require
* correct handling of INDIRECT arguments. */
if (func->op_array.arg_info[i].pass_by_reference) {
return;
}
}
if (fcall->extended_value < func->op_array.num_args) {
/* don't inline funcions with named constants in default arguments */
i = fcall->extended_value;
do {
if (Z_CONSTANT_P(RT_CONSTANT(&func->op_array, func->op_array.opcodes[i].op2))) {
return;
}
i++;
} while (i < func->op_array.num_args);
}
if (RETURN_VALUE_USED(opline)) {
zval zv;
ZVAL_DUP(&zv, RT_CONSTANT(&func->op_array, ret_opline->op1));
opline->opcode = ZEND_QM_ASSIGN;
opline->op1_type = IS_CONST;
opline->op1.constant = zend_optimizer_add_literal(op_array, &zv);
SET_UNUSED(opline->op2);
} else {
MAKE_NOP(opline);
}
zend_delete_call_instructions(opline-1);
}
}
}
ZEND_API zval *zend_get_constant_ex(zend_string *cname, zend_class_entry *scope, zend_ulong flags)
{
zend_constant *c;
const char *colon;
zend_class_entry *ce = NULL;
zend_string *class_name;
const char *name = cname->val;
size_t name_len = cname->len;
/* Skip leading \\ */
if (name[0] == '\\') {
name += 1;
name_len -= 1;
cname = NULL;
}
if ((colon = zend_memrchr(name, ':', name_len)) &&
colon > name && (*(colon - 1) == ':')) {
int class_name_len = colon - name - 1;
size_t const_name_len = name_len - class_name_len - 2;
zend_string *constant_name = zend_string_init(colon + 1, const_name_len, 0);
char *lcname;
zval *ret_constant = NULL;
ALLOCA_FLAG(use_heap)
class_name = zend_string_init(name, class_name_len, 0);
lcname = do_alloca(class_name_len + 1, use_heap);
zend_str_tolower_copy(lcname, name, class_name_len);
if (!scope) {
if (EG(current_execute_data)) {
scope = EG(scope);
} else {
scope = CG(active_class_entry);
}
}
if (class_name_len == sizeof("self")-1 &&
!memcmp(lcname, "self", sizeof("self")-1)) {
if (UNEXPECTED(!scope)) {
zend_error(E_EXCEPTION | E_ERROR, "Cannot access self:: when no class scope is active");
return NULL;
}
ce = scope;
} else if (class_name_len == sizeof("parent")-1 &&
!memcmp(lcname, "parent", sizeof("parent")-1)) {
if (UNEXPECTED(!scope)) {
zend_error(E_EXCEPTION | E_ERROR, "Cannot access parent:: when no class scope is active");
return NULL;
} else if (UNEXPECTED(!scope->parent)) {
zend_error(E_EXCEPTION | E_ERROR, "Cannot access parent:: when current class scope has no parent");
return NULL;
} else {
ce = scope->parent;
}
} else if (class_name_len == sizeof("static")-1 &&
!memcmp(lcname, "static", sizeof("static")-1)) {
ce = zend_get_called_scope(EG(current_execute_data));
if (UNEXPECTED(!ce)) {
zend_error(E_EXCEPTION | E_ERROR, "Cannot access static:: when no class scope is active");
return NULL;
}
} else {
ce = zend_fetch_class(class_name, flags);
}
free_alloca(lcname, use_heap);
if (ce) {
ret_constant = zend_hash_find(&ce->constants_table, constant_name);
if (ret_constant == NULL) {
if ((flags & ZEND_FETCH_CLASS_SILENT) == 0) {
zend_error(E_EXCEPTION | E_ERROR, "Undefined class constant '%s::%s'", class_name->val, constant_name->val);
zend_string_release(class_name);
zend_string_free(constant_name);
return NULL;
}
} else if (Z_ISREF_P(ret_constant)) {
ret_constant = Z_REFVAL_P(ret_constant);
}
}
zend_string_release(class_name);
zend_string_free(constant_name);
if (ret_constant && Z_CONSTANT_P(ret_constant)) {
if (UNEXPECTED(zval_update_constant_ex(ret_constant, 1, ce) != SUCCESS)) {
return NULL;
}
}
return ret_constant;
}
/* non-class constant */
if ((colon = zend_memrchr(name, '\\', name_len)) != NULL) {
/* compound constant name */
int prefix_len = colon - name;
size_t const_name_len = name_len - prefix_len - 1;
const char *constant_name = colon + 1;
char *lcname;
size_t lcname_len;
ALLOCA_FLAG(use_heap)
lcname_len = prefix_len + 1 + const_name_len;
lcname = do_alloca(lcname_len + 1, use_heap);
zend_str_tolower_copy(lcname, name, prefix_len);
/* Check for namespace constant */
lcname[prefix_len] = '\\';
memcpy(lcname + prefix_len + 1, constant_name, const_name_len + 1);
if ((c = zend_hash_str_find_ptr(EG(zend_constants), lcname, lcname_len)) == NULL) {
/* try lowercase */
zend_str_tolower(lcname + prefix_len + 1, const_name_len);
if ((c = zend_hash_str_find_ptr(EG(zend_constants), lcname, lcname_len)) != NULL) {
if ((c->flags & CONST_CS) != 0) {
c = NULL;
}
}
}
free_alloca(lcname, use_heap);
if (c) {
return &c->value;
}
/* name requires runtime resolution, need to check non-namespaced name */
if ((flags & IS_CONSTANT_UNQUALIFIED) != 0) {
return zend_get_constant_str(constant_name, const_name_len);
}
return NULL;
}
if (cname) {
return zend_get_constant(cname);
} else {
return zend_get_constant_str(name, name_len);
}
}
ZEND_API zval *zend_get_constant_ex(zend_string *cname, zend_class_entry *scope, uint32_t flags)
{
zend_constant *c;
const char *colon;
zend_class_entry *ce = NULL;
const char *name = ZSTR_VAL(cname);
size_t name_len = ZSTR_LEN(cname);
/* Skip leading \\ */
if (name[0] == '\\') {
name += 1;
name_len -= 1;
cname = NULL;
}
if ((colon = zend_memrchr(name, ':', name_len)) &&
colon > name && (*(colon - 1) == ':')) {
int class_name_len = colon - name - 1;
size_t const_name_len = name_len - class_name_len - 2;
zend_string *constant_name = zend_string_init(colon + 1, const_name_len, 0);
zend_string *class_name = zend_string_init(name, class_name_len, 0);
zval *ret_constant = NULL;
if (zend_string_equals_literal_ci(class_name, "self")) {
if (UNEXPECTED(!scope)) {
zend_throw_error(NULL, "Cannot access self:: when no class scope is active");
goto failure;
}
ce = scope;
} else if (zend_string_equals_literal_ci(class_name, "parent")) {
if (UNEXPECTED(!scope)) {
zend_throw_error(NULL, "Cannot access parent:: when no class scope is active");
goto failure;
} else if (UNEXPECTED(!scope->parent)) {
zend_throw_error(NULL, "Cannot access parent:: when current class scope has no parent");
goto failure;
} else {
ce = scope->parent;
}
} else if (zend_string_equals_literal_ci(class_name, "static")) {
ce = zend_get_called_scope(EG(current_execute_data));
if (UNEXPECTED(!ce)) {
zend_throw_error(NULL, "Cannot access static:: when no class scope is active");
goto failure;
}
} else {
ce = zend_fetch_class(class_name, flags);
}
if (ce) {
zend_class_constant *c = zend_hash_find_ptr(&ce->constants_table, constant_name);
if (c == NULL) {
if ((flags & ZEND_FETCH_CLASS_SILENT) == 0) {
zend_throw_error(NULL, "Undefined class constant '%s::%s'", ZSTR_VAL(class_name), ZSTR_VAL(constant_name));
goto failure;
}
ret_constant = NULL;
} else {
if (!zend_verify_const_access(c, scope)) {
zend_throw_error(NULL, "Cannot access %s const %s::%s", zend_visibility_string(Z_ACCESS_FLAGS(c->value)), ZSTR_VAL(class_name), ZSTR_VAL(constant_name));
goto failure;
}
ret_constant = &c->value;
}
}
if (ret_constant && Z_CONSTANT_P(ret_constant)) {
if (Z_TYPE_P(ret_constant) == IS_CONSTANT_AST) {
if (IS_CONSTANT_VISITED(ret_constant)) {
zend_throw_error(NULL, "Cannot declare self-referencing constant '%s::%s'", ZSTR_VAL(class_name), ZSTR_VAL(constant_name));
ret_constant = NULL;
goto failure;
}
MARK_CONSTANT_VISITED(ret_constant);
}
if (UNEXPECTED(zval_update_constant_ex(ret_constant, ce) != SUCCESS)) {
RESET_CONSTANT_VISITED(ret_constant);
ret_constant = NULL;
goto failure;
}
RESET_CONSTANT_VISITED(ret_constant);
}
failure:
zend_string_release(class_name);
zend_string_free(constant_name);
return ret_constant;
}
/* non-class constant */
if ((colon = zend_memrchr(name, '\\', name_len)) != NULL) {
/* compound constant name */
int prefix_len = colon - name;
size_t const_name_len = name_len - prefix_len - 1;
const char *constant_name = colon + 1;
char *lcname;
size_t lcname_len;
ALLOCA_FLAG(use_heap)
lcname_len = prefix_len + 1 + const_name_len;
lcname = do_alloca(lcname_len + 1, use_heap);
zend_str_tolower_copy(lcname, name, prefix_len);
/* Check for namespace constant */
lcname[prefix_len] = '\\';
memcpy(lcname + prefix_len + 1, constant_name, const_name_len + 1);
if ((c = zend_hash_str_find_ptr(EG(zend_constants), lcname, lcname_len)) == NULL) {
/* try lowercase */
zend_str_tolower(lcname + prefix_len + 1, const_name_len);
if ((c = zend_hash_str_find_ptr(EG(zend_constants), lcname, lcname_len)) != NULL) {
if ((c->flags & CONST_CS) != 0) {
c = NULL;
}
}
}
free_alloca(lcname, use_heap);
if (c) {
return &c->value;
}
/* name requires runtime resolution, need to check non-namespaced name */
if ((flags & IS_CONSTANT_UNQUALIFIED) != 0) {
return zend_get_constant_str(constant_name, const_name_len);
}
return NULL;
}
if (cname) {
return zend_get_constant(cname);
} else {
return zend_get_constant_str(name, name_len);
}
}
