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/**
* Object.cpp
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2014 Copernica BV
*/
#include "includes.h"
/**
* Set up namespace
*/
namespace Php {
/**
* Constructor to create a new instance of a builtin class
*
* @param name Name of the class to instantiate
* @param base Implementation of the class
*/
Object::Object(const char *name, Base *base) : Value(Type::Object)
{
// does the object already have a handle?
if (base->implementation())
{
// the object is already instantiated, we can assign it to this object
operator=(Value(base));
}
else
{
// we need the tsrm_ls variable
TSRMLS_FETCH();
// this is a brand new object that should be allocated, the C++ instance
// is already there (created by the extension) but it is not yet stored
// in PHP, find out the classname first (we use the FatalError class
// here because this function is called from C++ context, and zend_error()
// would cause a longjmp() which does not clean up C++ objects created
// by the extension).
auto *entry = zend_fetch_class(name, ::strlen(name), ZEND_FETCH_CLASS_SILENT TSRMLS_CC);
if (!entry) throw FatalError(std::string("Unknown class name ") + name);
// construct an implementation (this will also set the implementation
// member in the base object)
new ObjectImpl(entry, base TSRMLS_CC);
// now we can store it
operator=(Value(base));
// install the object handlers
Z_OBJVAL_P(_val).handlers = ClassImpl::objectHandlers(entry);
}
}
/**
* Copy constructor is valid if the passed in object is also an object,
* or when it is a string holding a classname
* @param that An other object
*/
Object::Object(const Value &value) : Value(Type::Object)
{
// when a string is passed in, we are going to make a new instance of the
// passed in string
if (value.isString())
{
// instantiate the object
if (instantiate(value)) call("__construct");
}
else
{
// this simply copies the other object
operator=(value);
}
}
/**
* Internal method to instantiate an object
* @param name Name of the class to instantiate
* @return bool True if there is a __construct function
*/
bool Object::instantiate(const char *name)
{
// we need the tsrm_ls variable
TSRMLS_FETCH();
// convert the name into a class_entry (we use the FatalError class
// here because this function is called from C++ context, and zend_error()
// would cause a longjmp() which does not clean up C++ objects created
// by the extension).
auto *entry = zend_fetch_class(name, ::strlen(name), ZEND_FETCH_CLASS_SILENT TSRMLS_CC);
if (!entry) throw FatalError(std::string("Unknown class name ") + name);
// initiate the zval (which was already allocated in the base constructor)
object_init_ex(_val, entry);
// @todo should we call methods like allocating hashtables, copying and
// initializing properties, et cetera????? In all example you always
// see such complicated and next-to-impossible-to-understand
// sequences of functions being called, but this object_init_ex
// also seems to work...
// @todo is this a memory leak? the base class first initializes a stdClass,
// and then we overwrite it with a specific class
// return whether there is a __construct function
return zend_hash_exists(&entry->function_table, "__construct", 12);
}
/**
* End namespace
*/
}
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