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Fix the associativity of ->, <->, U, R, W, and M wrt the PSL standard.

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* src/ltlparse/ltlparse.yy: Make all the above operators
right-associative.  Also let `:' have precedence over `;'.
* src/ltltest/reduccmp.test: Adjust for the `:' precedence.
* doc/tl/tl.tex, NEWS: Document this.
This commit is contained in:
Alexandre Duret-Lutz 2012-04-28 16:13:24 +02:00
parent 807dcefba4
commit ce437cd499
4 changed files with 43 additions and 45 deletions
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NEWS
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@ -36,7 +36,9 @@ New in spot 0.8.3a:
configured and built. This helps on systems (such as MinGW)
where LBTT cannot be built. The test-suite will skip any
LBTT-based test if LBTT is missing.
* Interface chances:
* Interface changes:
- Operators ->, <->, U, W, R, and M are no parsed as
right-associative to better match the PSL standard.
- The new entry point for LTL/PSL simplifications is the function
ltl_simplifier::simplify() declared in src/ltlvisit/simplify.hh.
The ltl_simplifier class implements a cache.