Known subclasses: reven2.types._array.Array, reven2.types._integer.Integer, reven2.types._pointer.Pointer, reven2.types._primitive.Primitive, reven2.types._primitive.PrimitiveBool, reven2.types._string.CString

An abstract class whose instances represent a type. Refer to the module documentation for details.

Implementers must provide the _construct_type method.

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 is_context_sensitive Whether the context argument needed by some methods actually has an effect.
Method _construct_type Return the underlying construct instance
def parse(self, buf, context=None):

Parses the value of an instance of this type from a raw buffer, possibly depending on the context.

Information

ParameterscontextThe context object. See package documentation.
def size_bytes(self, context=None):

The minimal number of bytes necessary to hold an instance of this type, possibly depending on the context.

Information

ReturnsAn integer.
def is_context_sensitive(self):

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

API Documentation for reven2, generated by pydoctor at 2019-09-11 11:57:21.