Function gravity::gnode_variable_create

pub unsafe extern "C" fn gnode_variable_create(
    token: gtoken_s, 
    identifier: *const c_char, 
    annotation_type: *const c_char, 
    storage_specifier: gtoken_t, 
    expr: *mut gnode_t, 
    decl: *mut gnode_t
) -> *mut gnode_t