Make instanceof useful for more things #6694
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This is for the RFC being drafted at https://wiki.php.net/rfc/instanceof_improvements
nikic
reviewed
Feb 15, 2021
| zend_uchar t = zend_lookup_builtin_type_by_name(Z_STR(class_node.u.constant)); | ||
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| if (t == IS_NULL || t == _IS_BOOL || t == IS_LONG || t == IS_STRING || t == IS_DOUBLE || t == IS_OBJECT) { | ||
| zend_compile_func_typecheck_impl(result, obj_ast, t); |
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Needs a zval_ptr_dtor_nogc(&class_node.u.constant) to avoid leaking.
nikic
reviewed
Feb 15, 2021
| } | ||
| } | ||
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| opline = zend_emit_op_tmp(result, ZEND_INSTANCEOF, &obj_node, NULL); |
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ZEND_INSTANCEOF would have to be adjusted to make sure that you get the same behavior with a dynamic type name.
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See also https://wiki.php.net/rfc/variable_syntax_tweaks#arbitrary_expression_support_for_new_and_instanceof for currently allowed syntax and the note in "Future Scope" on potential complications with omitted parentheses. |
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@MaxSem Are you planning on pursuing an RFC for this? |
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No, since then I noticed an RFC for |
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Thanks, I closed the corresponding RFC as well. |
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This is for the RFC being drafted at https://wiki.php.net/rfc/instanceof_improvements