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acc: Adjust generalition of parity acceptance

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According to https://github.com/adl/hoaf/issues/46

* src/twa/acc.cc (parity): Adjust generation.
* src/tests/hoaparse.test, wrap/python/tests/accparse.ipynb:
Adjust existing test cases.
* wrap/python/tests/accparse2.py: New test cases.
This commit is contained in:
Alexandre Duret-Lutz 2015-05-24 00:00:36 +02:00
parent 05ef316c23
commit 5d7f4464ea
4 changed files with 37 additions and 32 deletions
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22
src/twa/acc.cc
View file

@ -517,8 +517,16 @@ namespace spot
acc_cond::acc_code
acc_cond::acc_code::parity(bool max, bool odd, unsigned sets)
{
acc_cond::acc_code res;
if (max)
res = odd ? t() : f();
else
res = (sets & 1) == odd ? t() : f();
if (sets == 0)
return f();
return res;
// When you look at something like
// acc-name: parity min even 5
// Acceptance: 5 Inf(0) | (Fin(1) & (Inf(2) | (Fin(3) & Inf(4))))
@ -526,10 +534,6 @@ namespace spot
int start = max ? 0 : sets - 1;
int inc = max ? 1 : -1;
int end = max ? sets : -1;
// Do not start with a Fin term, the right-most term is always Inf.
if ((start & 1) != odd)
start += inc;
acc_cond::acc_code res = f();
for (int i = start; i != end; i += inc)
{
if ((i & 1) == odd)
@ -623,12 +627,10 @@ namespace spot
unsigned sets = num_;
if (sets == 0)
{
max = false;
odd = false;
return is_false();
max = true;
odd = is_true();
return true;
}
if (is_true())
return false;
acc_cond::mark_t u_inf;
acc_cond::mark_t u_fin;
std::tie(u_inf, u_fin) = code_.used_inf_fin_sets();