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* php-object.cpp

* Copyright (C) Roger P. Gee

* This unit provides the generic class registration for classes we wish to

* provide to PHP userspace. The classes' methods and handlers are defined in

* their own separate compilation units.

#include "php-object.h"

#include "php-type.h"

using namespace php_git2;

// Provide generic versions of the custom zend_object derivation create/free

// handlers.

template<typename StorageType>

static zend_object* php_create_object_handler(zend_class_entry* ce)

{

using php_object_t = php_zend_object<StorageType>;

php_object_t* object;

// TODO Update to use zend_object_alloc().

const size_t nbytes = sizeof(php_object_t) + zend_object_properties_size(ce);

object = new(emalloc(nbytes)) php_object_t(ce);

return &object->std;

}

template<typename StorageType>

static zend_object* php_clone_object_handler(zend_object* zobj)

{

zend_object* newObject;

zend_object* oldObject;

oldObject = zobj;

newObject = php_create_object_handler<StorageType>(oldObject->ce);

zend_objects_clone_members(newObject,oldObject);

return newObject;

}

template<typename StorageType>

static void php_free_object(zend_object* zo)

{

using php_object_t = php_zend_object<StorageType>;

php_object_t::get_wrapper(zo)->~php_object_t();

}

template<typename StorageType>

static void php_init_object_handlers(zend_class_entry* ce)

{

using php_object_t = php_zend_object<StorageType>;

const zend_object_handlers* stdhandlers = zend_get_std_object_handlers();

// Store class entry for later global lookup and set create_object function.

php_git2::class_entry[StorageType::get_type()] = ce;

ce->create_object = &php_create_object_handler<StorageType>;

// Initialize handlers.

memcpy(&php_object_t::handlers,stdhandlers,sizeof(zend_object_handlers));

php_object_t::handlers.offset = php_object_t::offset();

php_object_t::handlers.clone_obj = php_clone_object_handler<StorageType>;

php_object_t::handlers.free_obj = &php_free_object<StorageType>;

php_object_t::init(ce);

}

// Define the global list of class entry structure references.

zend_class_entry* php_git2::class_entry[_php_git2_obj_top_];

// Define handlers for any type.

template<typename StorageType>

zend_object_handlers php_git2::php_zend_object<StorageType>::handlers;

// This function registers all classes. It should be called by the MINIT startup

// function.

void php_git2::php_git2_register_classes()

{

zend_class_entry ce, *pce;

// abstract class GitODBBackend

INIT_CLASS_ENTRY(ce,"GitODBBackend",odb_backend_methods);

pce = zend_register_internal_class(&ce);

pce->ce_flags |= ZEND_ACC_EXPLICIT_ABSTRACT_CLASS;

php_init_object_handlers<php_odb_backend_object>(pce);

// final class GitODBBackend_Internal extends GitODBBackend

INIT_CLASS_ENTRY(ce,"GitODBBackend_Internal",odb_backend_internal_methods);

pce = zend_register_internal_class_ex(&ce,

php_git2::class_entry[php_git2_odb_backend_obj]);

pce->ce_flags |= ZEND_ACC_FINAL;

php_init_object_handlers<php_odb_backend_internal_object>(pce);

// abstract class GitODBWritepack

INIT_CLASS_ENTRY(ce,"GitODBWritepack",odb_writepack_methods);

pce = zend_register_internal_class(&ce);

pce->ce_flags |= ZEND_ACC_EXPLICIT_ABSTRACT_CLASS;

php_init_object_handlers<php_odb_writepack_object>(pce);

// final class GitODBWritepack_Internal extends GitODBWritepack

INIT_CLASS_ENTRY(ce,"GitODBWritepack_Internal",odb_writepack_internal_methods);

pce = zend_register_internal_class_ex(&ce,

php_git2::class_entry[php_git2_odb_writepack_obj]);

pce->ce_flags |= ZEND_ACC_FINAL;

php_init_object_handlers<php_odb_writepack_internal_object>(pce);

// abstract class GitODBStream

INIT_CLASS_ENTRY(ce,"GitODBStream",odb_stream_methods);

pce = zend_register_internal_class(&ce);

pce->ce_flags |= ZEND_ACC_EXPLICIT_ABSTRACT_CLASS;

php_init_object_handlers<php_odb_stream_object>(pce);

// final class GitODBStream_Internal extends GitODBStream

INIT_CLASS_ENTRY(ce,"GitODBStream_Internal",odb_stream_internal_methods);

pce = zend_register_internal_class_ex(&ce,

php_git2::class_entry[php_git2_odb_stream_obj]);

pce->ce_flags |= ZEND_ACC_FINAL;

php_init_object_handlers<php_odb_stream_internal_object>(pce);

// final class GitWritestream

INIT_CLASS_ENTRY(ce,"GitWritestream",writestream_methods);

pce = zend_register_internal_class(&ce);

pce->ce_flags |= ZEND_ACC_FINAL;

php_init_object_handlers<php_writestream_object>(pce);

// abstract class GitConfigBackend

INIT_CLASS_ENTRY(ce,"GitConfigBackend",config_backend_methods);

pce = zend_register_internal_class(&ce);

pce->ce_flags |= ZEND_ACC_EXPLICIT_ABSTRACT_CLASS;

php_init_object_handlers<php_config_backend_object>(pce);

// abstract class GitRefDBBackend

INIT_CLASS_ENTRY(ce,"GitRefDBBackend",refdb_backend_methods);

pce = zend_register_internal_class(&ce);

pce->ce_flags |= ZEND_ACC_EXPLICIT_ABSTRACT_CLASS;

php_init_object_handlers<php_refdb_backend_object>(pce);

// final class GitRefDBBackend_Internal extends GitRefDBBackend

INIT_CLASS_ENTRY(ce,"GitRefDBBackend_Internal",refdb_backend_internal_methods);

pce = zend_register_internal_class_ex(&ce,

php_git2::class_entry[php_git2_refdb_backend_obj]);

pce->ce_flags |= ZEND_ACC_FINAL;

php_init_object_handlers<php_refdb_backend_internal_object>(pce);

// final class GitClosure

INIT_CLASS_ENTRY(ce,"GitClosure",closure_methods);

pce = zend_register_internal_class(&ce);

pce->ce_flags |= ZEND_ACC_FINAL;

php_init_object_handlers<php_closure_object>(pce);

}

// Provide implementations for generic make function.

void php_git2::php_git2_make_object(zval* zp,php_git2_object_t type)

{

object_init_ex(zp,php_git2::class_entry[type]);

}

// Helpers

bool php_git2::is_method_overridden(zend_class_entry* ce,const char* method,int len)

{

zval* func;

zend_function* fbc;

func = zend_hash_str_find(&ce->function_table,method,len);

if (func == nullptr) {

return false;

}

fbc = Z_FUNC_P(func);

// The method is overridden if the prototype is defined.

return (fbc->common.prototype != NULL);

}

zend_function* php_git2::not_allowed_get_constructor(zend_object* object)

{

zend_throw_error(

nullptr,

"Instantiation of '%s' is not allowed",

ZSTR_VAL(object->ce->name));

return nullptr;

}

zend_function* php_git2::disallow_base_get_constructor(zend_object* object)

{

if (!object->ce->parent) {

return not_allowed_get_constructor(object);

}

return object->ce->constructor;

}

* Local Variables:

* indent-tabs-mode:nil

* tab-width:4

* End:

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