Update gen_stubs.php to generate C enums from internal enums, when the stub is annotated with @generate-c-enums. Enum values can be compared to the result of zend_enum_fetch_case_id(zend_object*).
The generated enums are added to separate files named {$extensionName}_decl.h, so that it's possible to include these from anywhere. _arginfo.h files would generate warnings if we tried to include them in a compilation unit that doesn't call the register_{$class} functions, for instance.
Introduce Z_PARAM_ENUM().
* Make ZEND_AST_CONST_ENUM_INIT a 4-children node
* Store enum case id in ZEND_AST_CONST_ENUM_INIT
* Store enum case id in instance
* Expose enum case_id internally
* Generate C enum for internal enums
* Introduce Z_PARAM_ENUM()
* Port extensions
* uri: Add `UriError`
* uri: Throw `UriError` for unexpected failures in uri_parser_rfc3986
This is a follow-up for php/php-src#19779 which updated the error *messages*
for the non-syntax errors, but did not update the exception class, still
implying it's related to invalid URIs.
Given that we don't know ourselves if these are reachable in practice, they are
cannot be meaningfully handled by a user of PHP. Thus this should be a `Error`
according to our exception policy.
* uri: Throw `UriError` when unable to recompose URIs
* uri: Throw `UriError` when unable to read component
* NEWS
