Module octypes

Split the type encoding of a method signature into separate, single encodings and the combined encoding.

If necessary, the encoding is extended with the type encoding for the hidden method arguments id/self and SEL/cmd.

Does not handle bitfields, arrays, structs, unions, etc. and strips any offset, size or width specifiers from the encoding.

In the returned 2-tuple (codes, encoding), codes is the list of individual type encodings from item start=0 and encoding the combined type encoding in bytes and both extended if needed.

Example:

>>> split_emcoding2('v*')
>>> (['v', '@', ':', '*'], 'v@:*')

Split a type encoding into separate type encodings.

Does not handle bitfields, arrays, structs, unions, etc. and strips any offset, size or width specifiers from the encoding.

Examples:

>>> split_encoding('^v16@0:8')
>>> ['^v', '@', ':']

>>> split_encoding('{CGSize=dd}40@0:8{PyObject=@}Q32')
>>> ['{CGSize=dd}', '@', ':', '{PyObject=@}', 'Q']

Supported Type Encodings:

• B = bool (C++ bool, C99 _Bool)
• c, C = char, unsigned char
• f, d = float, double
• i, I = int, unsigned int
• l, L = long, unsigned long (32-bit)
• q, Q = long long, unsigned long long
• s, S = short, unsigned short
• t, T = 128-bit int, unsigned int
• v = void
• * = string (char *)
• : = method selector (SEL/cmd)
• # = class
• #"name" = class "name"
• @ = object (instance, statically typed, typed id, etc.)
• @"name" = instance of class "name"
• ^type = pointer to type
• ? = unknown type (among other things, used for function pointers)

Unsupported Type Encodings:

• bW = bit field of width W
• [Ltype] = array of L items of type
• {name=type...} = structure
• (name=type...) = union
• <...> = block

For Objective-C internal use only:

• n, N = in, inout
• o, O = out, bycopy
• r, R = const, byref
• V = oneway

Type encodings may be preceeded by a "name", for example a bit field "name"b1, structure fields {CGsize="width"d"heigth"d}, union items, etc. and all such "name" prefixes are ignored. See also Type Encodings, NSHipster Type Encodings and Digits in type encoding.