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tl: extend F[n:m] and G[n:m] to the case of m=$

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Suggested by Victor Khomenko.

* spot/tl/formula.cc, spot/tl/formula.hh, spot/parsetl/parsetl.yy:
Implement this.
* NEWS, doc/tl/tl.tex: Document it.
* tests/core/sugar.test, tests/python/ltlparse.py: Add some tests.
This commit is contained in:
Alexandre Duret-Lutz 2019-06-02 14:36:07 +02:00
parent 74786324f4
commit 58389bdb80
7 changed files with 57 additions and 16 deletions
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18
tests/core/sugar.test
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@ -30,9 +30,13 @@ G[2:4]a
G[4:2]a
F[2:4]a
F[4:2]a
F[2:$]a
F[2..]a
X [4]a | b
G [2:4] a | b
G [4:2] a | b
G [2:] a | b
G [2..] a | b
F [2:4] a | b
F [4:2]a | F[2:2]b
F[]a|G[]b|X[]c
@ -61,9 +65,13 @@ XX(a & X(a & Xa))
XX(a & X(a & Xa))
XX(a | X(a | Xa))
XX(a | X(a | Xa))
XXFa
XXFa
b | XXXXa
b | XX(a & X(a & Xa))
b | XX(a & X(a & Xa))
b | XXGa
b | XXGa
b | XX(a | X(a | Xa))
XX(a | X(a | Xa)) | XXb
FGa | Gb | XGc
@ -93,7 +101,7 @@ F[3:1]
F[3:1][2:1]
F[a
G[2:4]
G[2:]a
G[2:.]a
G[4]a
G[a
X[2
@ -163,12 +171,12 @@ syntax error, unexpected end of formula
missing right operand for "G[.] operator"
ltlfilt:err.in:6: parse error:
>>> G[2:]a
>>> G[2:.]a
^
syntax error, unexpected closing bracket, expecting $num
syntax error, unexpected $undefined, expecting closing bracket
>>> G[2:]a
^^^^^
>>> G[2:.]a
^^^^^^
treating this G[.] as a simple G
ltlfilt:err.in:7: parse error: