reven2.types._enum.Enumeration

class documentation

class Enumeration(_Type):

A user-defined, named type that represents a list of named values, like enums in C.

Method	`__eq__`	Compares the instance for equality with an object.
Method	`__hash__`	Returns the hash for this value.
Method	`__init__`	Initializes a new instance of this class from its integer type used to represent it, its name, its mangled name if available, and all its items.
Method	`__ne__`	Compares the instance for equality with an object.
Method	`__str__`	Returns the nicely printable string representation of this instance.
Method	`description`	The short description of this type.
Method	`is_context_sensitive`	Whether the context argument needed by some methods actually has an effect.
Method	`item`	Get an item of the enumeration by its name.
Method	`items`	An iterator over the items in the enumeration, in the order of declaration.
Property	`mangled_name`	The mangled name of this enumeration, if available.
Property	`name`	The name of this enumeration.
Property	`underlying_type`	The integer type that serves as representation for this enumeration.
Method	`_construct_type`	Return the underlying `construct` instance
Method	`_decode`	Undocumented
Method	`_encode`	Undocumented
Instance Variable	`_items`	Undocumented
Instance Variable	`_mangled_name`	Undocumented
Instance Variable	`_name`	Undocumented
Instance Variable	`_underlying_type`	Undocumented

Inherited from Type:

Method	`parse`	Parses the value of an instance of this type from a raw buffer, possibly depending on the context.
Method	`size_bytes`	The minimal number of bytes necessary to hold an instance of this type, possibly depending on the context.
Method	`to_bytes`	Build a byte buffer from a value of this type.
Method	`_resolve`	Uses the resolver to return a resolved version of the type, if possible.

def __eq__(self, o):

Compares the instance for equality with an object.

if the object is not an Enumeration, it will never be equal to this instance.

Parameters
o:`object`	Undocumented
Returns
`bool`	Undocumented

def __hash__(self):

Returns the hash for this value.

Returns
`int`	Undocumented

def __init__(self, underlying_type, name, mangled_name, items):

Initializes a new instance of this class from its integer type used to represent it, its name, its mangled name if available, and all its items.

Parameters
underlying_type:`_Integer`	Undocumented
name:`str`	Undocumented
mangled_name:`_Optional[str]`	Undocumented
items:`_Iterable[Item]`	Undocumented

def __ne__(self, o):

Compares the instance for equality with an object.

if the object is not an Enumeration, it will never be equal to this instance.

Parameters
o:`object`	Undocumented
Returns
`bool`	Undocumented

def __str__(self):

Returns the nicely printable string representation of this instance.

Returns
`str`	Undocumented

def description(self):

overrides reven2.types._type.Type.description

The short description of this type.

For named types, it is the name of the type. For other types, it is generally __str__.

Returns
`str`	Undocumented

def is_context_sensitive(self):

overrides reven2.types._type.Type.is_context_sensitive

Whether the context argument needed by some methods actually has an effect.

Types that return False to this method are context-insensitive types. You can safely pass any object as context parameter (including None) to the methods of such type.

Note that the context-sensitivity of a type may change in the future.

Examples

Getting the size of a type without needing a context for context-insensitive types: >>> types.U32.is_context_sensitive() False >>> types.U32.size_bytes(context=None) 4 >>> array32_12 = types.Array(types.U32, 12) >>> array32_12.is_context_sensitive() False >>> array32_12.size_bytes() # context=None by default 48

Context-sensitive types may raise errors when attempting to get the size without a context: >>> types.USize.is_context_sensitive() True >>> types.USize.size_bytes(context=None) ValueError: Please provide a context when using a context-sensitive type

Returns
`bool`	Undocumented

def item(self, key):

Get an item of the enumeration by its name.

Information

Parameters
key:`str`	Undocumented
Returns
`Item`	Undocumented
Raises
`KeyError`	if there is no item of this name in the enumeration.

def items(self):

An iterator over the items in the enumeration, in the order of declaration.

Returns
`_Iterator[Item]`	Undocumented

@property
mangled_name: _Optional[str] =

The mangled name of this enumeration, if available.

@property
name: str =

The name of this enumeration.

@property
underlying_type: _Integer =

The integer type that serves as representation for this enumeration.

def _construct_type(self, context=None):

overrides reven2.types._type.Type._construct_type

Return the underlying construct instance

Parameters
context:`_Optional[Context]`	Undocumented
Returns
`_construct.core.Construct`	Undocumented

def _decode(self, value, _):

Undocumented

Parameters
value:`int`	Undocumented
_	Undocumented
Returns
`EnumerationInstance`	Undocumented

def _encode(self, value, _):

Undocumented

Parameters
value:`EnumerationInstance`	Undocumented
_	Undocumented
Returns
`int`	Undocumented

_items =

Undocumented

_mangled_name =

Undocumented

_name =

Undocumented

_underlying_type =

Undocumented