Fix segfault when send()ing to a closed generator

Add support for $generator->send()

Yield now is an expression and the return value is the value passed to
$generator->send(). By default (i.e. if ->next() is called) the value is
NUL

Add support for $generator->send()

Yield now is an expression and the return value is the value passed to
$generator->send(). By default (i.e. if ->next() is called) the value is
NULL.

Unlike in Python ->send() can be run without priming the generator with a
->next() call first.

show more ...

Properly free resources when generator return value not used

To keep things clean two new functions are introduced:

zend_clean_and_cache_symbol_table(HashTable *symbol_table)
ze

Properly free resources when generator return value not used

To keep things clean two new functions are introduced:

zend_clean_and_cache_symbol_table(HashTable *symbol_table)
zend_free_compiled_variables(zval ***CVs, int num)

show more ...

Set EG(current_execute_data)

This fixes several issues. In particular it makes method generators work
properly and also allows generators using a symbol table.

Free loop variables

If the generator is closed before it has finished running, it may happen
that some FREE or SWITCH_FREE opcodes haven't been executed and memory is
leaked.

Free loop variables

If the generator is closed before it has finished running, it may happen
that some FREE or SWITCH_FREE opcodes haven't been executed and memory is
leaked.

This fixes it by walking the brk_cont_array and manually freeing the
variables.

show more ...

Add support for generator methods

Remove wrong dtor call

Close generator on return

Implement return for generators

For generators ZEND_RETURN directly calls ZEND_VM_RETURN(), thus passing
execution back to the caller (zend_generator_resume).

This commit also a

Implement return for generators

For generators ZEND_RETURN directly calls ZEND_VM_RETURN(), thus passing
execution back to the caller (zend_generator_resume).

This commit also adds a check that only return; is used in generators and
not return $value;.

show more ...

Add YIELD opcode implementation

Add way to pass generator object to opcode handlers

The generator zval is put into the return_value_ptr_ptr.

Add support for executing a zend_execute_data

This adds another function execute_ex(), which accepts a zend_execute_data
struct to run (contrary to execute(), which accepts a zend_op_arr

Add support for executing a zend_execute_data

This adds another function execute_ex(), which accepts a zend_execute_data
struct to run (contrary to execute(), which accepts a zend_op_array from
which it initialized the execute_data).

This needs a bit more cleanup.

show more ...

Add dummy Iterator implementation

This simply adds dummy rewind/valid/current/key/next methods to Generator.

Add initial code for suspending execution

This is just some initial code, which is still quite broken (and needs to be
moved so it can be reused.)

Add some boilerplate code for Generator class

The Generator class now uses a zend_generator struct, so it'll be able to
store additional info.

This commit also ensures that Gene

Add some boilerplate code for Generator class

The Generator class now uses a zend_generator struct, so it'll be able to
store additional info.

This commit also ensures that Generator cannot be directly instantiated
and extended. The error tests are now in a separate folder from the
(yet-to-come) functional tests.

show more ...

Add empty Generator class