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python: make it possible to modify edges during iteration

Browse source 
Reported by Laurent Xu.

* python/spot/impl.i: Fix the iterator to return pointers instead of
references.  Because references are ultimately copied.
* tests/python/automata.ipynb: Add test cases.
* NEWS: Mention it.
This commit is contained in:
Alexandre Duret-Lutz 2016-07-29 16:09:54 +02:00
parent 09c6393942
commit d271dfd592
3 changed files with 215 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

3
NEWS
View file

@ -165,6 +165,9 @@ New in spot 2.0.3a (not yet released)
* Bindings for randomize() were added.
* Iterating over edges via "aut.out(s)" or "aut.edges()"
now allows modifying the edge fields.
* Under IPython the spot.ltsmin module now offers a
%%pml magic to define promela models, compile them
with spins, and dynamically load them. This is

10
python/spot/impl.i
View file

@ -163,14 +163,16 @@ using namespace spot;
%}
// Swig come with iterators that implement a decrement method.
// This is not supported in our "successor" iterators.
// Swig come with iterators that implement a decrement method. This
// is not supported in our "successor" iterators. Also we want
// iterators to return pointers so that data can be modified during
// iteration.
%fragment("ForwardIterator_T","header",fragment="SwigPyIterator_T") {
namespace swig
{
template<typename OutIterator,
typename ValueType =
typename std::iterator_traits<OutIterator>::value_type,
typename std::iterator_traits<OutIterator>::pointer,
typename FromOper = from_oper<ValueType> >
class ForwardIterator_T : public SwigPyIterator_T<OutIterator>
{
@ -191,7 +193,7 @@ namespace swig
if (base::current == end) {
throw stop_iteration();
} else {
return from(static_cast<const value_type&>(*(base::current)));
return from(static_cast<value_type>(&*(base::current)));
}
}

234
tests/python/automata.ipynb
View file

@ -18,7 +18,7 @@
"version": "3.4.3+"
},
"name": "",
"signature": "sha256:29d335e40a65f0ca04a3b2b07bfcbf92f794407b413644546d957487dcbf4bb1"
"signature": "sha256:91af67353e0a35fefd672b53bd005af28720c0c7a8dfc922ce70fa8f3ef6a42e"
},
"nbformat": 3,
"nbformat_minor": 0,
@ -178,7 +178,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f09a8369240> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc0c24900> >"
]
}
],
@ -317,7 +317,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a13dd5f8>"
"<IPython.core.display.SVG at 0x7f5fc18bd1d0>"
]
}
],
@ -470,7 +470,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a074abe0>"
"<IPython.core.display.SVG at 0x7f5fc013a710>"
]
}
],
@ -570,7 +570,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f09a8323fc0> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc866e1b0> >"
]
}
],
@ -640,7 +640,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f09a8323e70> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc866e060> >"
]
}
],
@ -716,7 +716,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f09a8323f00> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc866e0f0> >"
]
}
],
@ -839,7 +839,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a0773da0>"
"<IPython.core.display.SVG at 0x7f5fc013a908>"
]
}
],
@ -1029,7 +1029,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f098bfe96d8>"
"<IPython.core.display.SVG at 0x7f5fc0101978>"
]
}
],
@ -1176,7 +1176,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f09a8323f30> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc866e300> >"
]
}
],
@ -1277,7 +1277,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f098bff3210> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc866e2d0> >"
]
}
],
@ -1395,7 +1395,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f098bff3240> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc866e120> >"
]
}
],
@ -1494,7 +1494,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f098bff3270> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc866e330> >"
]
}
],
@ -1964,7 +1964,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f09a8323ed0> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc866e2a0> >"
]
}
],
@ -2161,7 +2161,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a0703dd8>"
"<IPython.core.display.SVG at 0x7f5fc00cd3c8>"
]
},
{
@ -2286,7 +2286,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a0734198>"
"<IPython.core.display.SVG at 0x7f5fc00d38d0>"
]
},
{
@ -2428,7 +2428,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a06db400>"
"<IPython.core.display.SVG at 0x7f5fc014cb38>"
]
},
{
@ -2579,7 +2579,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f098bff33f0> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc0b98ae0> >"
]
}
],
@ -2735,7 +2735,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f09a8323c60> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc0b98fc0> >"
]
}
],
@ -2805,7 +2805,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f098bff31b0> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc0b98ae0> >"
]
}
],
@ -2877,7 +2877,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a06980f0>"
"<IPython.core.display.SVG at 0x7f5fc00e4a20>"
]
},
{
@ -2930,7 +2930,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a0682358>"
"<IPython.core.display.SVG at 0x7f5fc010f828>"
]
},
{
@ -3042,7 +3042,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a0742908>"
"<IPython.core.display.SVG at 0x7f5fc01223c8>"
]
},
{
@ -3154,7 +3154,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a0742828>"
"<IPython.core.display.SVG at 0x7f5fc00fcc88>"
]
}
],
@ -3232,7 +3232,7 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f09a82ac5d0> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc866e390> >"
]
},
{
@ -3315,7 +3315,7 @@
"</svg>"
],
"text": [
"<IPython.core.display.SVG at 0x7f09a06db4a8>"
"<IPython.core.display.SVG at 0x7f5fc00c0cf8>"
]
}
],
@ -3332,7 +3332,7 @@
"cell_type": "code",
"collapsed": false,
"input": [
"spot.translate('FGa', 'generic', 'deterministic')"
"aut = spot.translate('FGa', 'generic', 'deterministic'); aut"
],
"language": "python",
"metadata": {},
@ -3400,11 +3400,189 @@
"</svg>\n"
],
"text": [
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f09a82ac480> >"
"<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f5fc85824e0> >"
]
}
],
"prompt_number": 26
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Adding an automatic proposition to all edges"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import buddy\n",
"b = buddy.bdd_ithvar(aut.register_ap('b'))\n",
"for e in aut.edges():\n",
" e.cond &= b\n",
"aut"
],
"language": "python",
"metadata": {},
"outputs": [
{
"metadata": {},
"output_type": "pyout",
"prompt_number": 27,
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},
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"metadata": {},
"source": [
"Adding an atomic proposition to the edge between 0 and 1:"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"c = buddy.bdd_ithvar(aut.register_ap('c'))\n",
"for e in aut.out(0):\n",
" if e.dst == 1:\n",
" e.cond &= c\n",
"aut"
],
"language": "python",
"metadata": {},
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