h/plugins/explain.py

from util import hook
from pycparser.cdecl import explain_c_declaration

@hook.command('explain')
def explain(inp):
    ".explain <c expression> -- gives an explanation of C expression"
    if not inp:
        return explain.__doc__

    try:    
        result = explain_c_declaration(inp.rstrip())
    except e:
        result = str(e)

    return result