summaryrefslogtreecommitdiff
path: root/attoconf/classy.py
blob: 33c9c40317a4793dfc190889d64736f7059a23ea (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
#   Copyright 2013-2015 Ben Longbons <b.r.longbons@gmail.com>
#
#   This file is part of attoconf.
#
#   attoconf is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   attoconf is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with attoconf.  If not, see <http://www.gnu.org/licenses/>.



from .core import Project, Build

class PolymorphicSlotMergerMetaclass(type):

    def __new__(meta, name, bases, dct):
        if '__slots__' not in dct:
            s = ()
            for b in bases:
                s2 = b.__dict__.get('_merge_slots_', ())
                if isinstance(s2, str):
                    s2 = (s2,)
                s += s2
            s += dct.get('_merge_slots_', ())
            dct['__slots__'] = s
        else:
            assert dct['__slots__'] == ()
        return type.__new__(meta, name, bases, dct)

    # TODO: remove *args for 1.0
    def __call__(cls, *args, **kwargs):
        instance = type.__call__(cls, *args, **kwargs)
        if 'package' in kwargs or not isinstance(instance,
                __import__('attoconf.lib.install', fromlist=['Install']).Install):
            instance._do_jiggle()
        return instance


# TODO: remove this for 1.0
def add_slots(cls):
    return cls

class ClassyProject(Project, metaclass=PolymorphicSlotMergerMetaclass):
    ''' A more convenient, objectish, way of setting up a project.
    '''
    __slots__ = ()
    _merge_slots_ = ()

    def __init__(self, srcdir):
        super(ClassyProject, self).__init__(srcdir)

    # TODO: remove this for 1.0
    def jiggle(self):
        pass

    def _do_jiggle(self):
        self.order.append(None)
        self.general()
        self.order.append(None)
        self.paths()
        self.order.append(None)
        self.arches()
        self.order.append(None)
        self.vars()
        self.order.append(None)
        self.features()
        self.order.append(None)
        self.packages()
        self.order.append(None)

        if 0:
            self.tests()
            self.order.append(None)
        self.post()
        self.order.append(None)

    def general(self):
        ''' Registration hook for general options (usually unneeded).
        '''
        self.add_help('General:', hidden=False)
        self.add_alias('--help', ['--help=default'],
                help='display standard help, then exit', hidden=False)
        self.add_option('--help', init='none',
                type=self.do_help, check=None,
                help='just display some kind of help instead of configuring', hidden=False,
                help_var='KIND')
        self.help.add_option('--help=hidden',
                help='display help you should never ever ever care about',
                hidden=False)

    def paths(self):
        ''' Registration hook for path-related options.
            (--prefix, --bindir, etc)

            Probably only used by attoconf.lib.install.
        '''

    def arches(self):
        ''' Registration hook for arch-related options.
            (--build, --host, and sometimes --target)

            Typically this changes the prefix of the compiler.
        '''

    def vars(self):
        ''' Environment variables (usually capital, don't start with a --).

            Usually there is one or two of these for every program needed.
        '''
        self.add_help('Environment Variables:', hidden=False)

    def features(self):
        ''' Customizations for this package (--enable-*).
        '''
        self.add_help('Optional Features:', hidden=False)
        # TODO add '--disable-option-checking'
        self.help.add_option('--disable-FEATURE',
                help='do not include FEATURE (same as --enable-FEATURE=no)',
                hidden=False)
        self.help.add_option('--enable-FEATURE',
                help='include FEATURE (same as --enable-FEATURE=yes)',
                hidden=False)

    def packages(self):
        ''' Settings related to dependencies (--with-*).
        '''
        self.add_help('Optional Packages:', hidden=False)
        self.help.add_option('--with-PACKAGE',
                help='use PACKAGE (same as --with-PACKAGE=yes)',
                hidden=False)
        self.help.add_option('--without-PACKAGE',
                help='do not use PACKAGE (same as --with-PACKAGE=no)',
                hidden=False)

    if 0: # not sure if really needed
        def tests(self):
            ''' Late tests, but still before post.

            '''

    def post(self):
        ''' Special hook for things that need to be done at the very end.

            attoconf.post.make
        '''

    # okay, no more registration hooks
    def build(self, bindir):
        return Build(self, bindir)