packed, cppclass, fused, namespace are keywords (in some contexts)

[aldanor]

Example:

cdef packed struct Foo:
    pass

cdef extern from "foo.h" namespace "my::namespace":
    cdef cppclass A:
        pass

ctypedef fused int_or_float:
    int
    float

Looks like GitHub's syntax highlighter correctly picks it up (except namespace) :)

[petervaro]

@aldanor can you help me collecting all the valid cpp keywords/statements/types/etc which needed to be highlighted in cython? like for example: I found that the new statement is also valid in cython:

cdef Rectangle *rec = new Rectangle(1, 2, 3, 4)

---

Several examples and details could be found here.

[aldanor]

Alright, here's the list of Cython keywords and builtins that don't get highlighted (looking at the latest Cython v0.21) and their classification (similar keywords):

packed  # (same as public)
namespace # (same as extern)
cppclass # (same as class)
StandardError # (same as Exception)
xrange  # (same as range)
Py_ssize_t  # (standard type, used quite often)

That's just off the top of my head, maybe there's more...

Would also be nice to highlight standard C types from stdint which are used in Cython quite often:

int8_t, int16_t, ..., float32_t, .... etc

https://github.com/cython/cython/blob/master/Cython/Includes/libc/stdint.pxd

Some miscellaneous flaws I've noticed in highlighting:

x.readonly = 1

readonly shouldn't be highlighted since it's a wrong context (same thing with public, readonly, cdef, api etc -- note that types work fine so x.int or x.struct wouldn't get highlighted).

cdef object[int, ndim=1, mode="c"] buf1d = array(shape=(10,), itemsize=sizeof(int), format='i', mode='c')
cdef np.ndarray[dtype_t, ndim=3] a

ndim, mode etc should be highlighted the same way as keyword arguments to a function.