* NEWS: Reorganize recent entries.
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Alexandre Duret-Lutz
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1 changed files with 75 additions and 40 deletions
115
NEWS
115
NEWS
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@ -23,10 +23,10 @@ New in spot 2.5.3.dev (not yet released)
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of a chain of many products, as in
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"autfilt -B --product 1.hoa ... --product n.hoa in.hoa"
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then it will automatically degeneralize the intermediate
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product to avoid exceeding the number of supported
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products to avoid exceeding the number of supported
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acceptance sets.
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- genltl learned to generate four new families of formulas:
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- genltl learned to generate four new families of LTL formulas:
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--sejk-f=RANGE[,RANGE] f(0,j)=(GFa0 U X^j(b)), f(i,j)=(GFai U
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G(f(i-1,j)))
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--sejk-j=RANGE (GFa1&...&GFan) -> (GFb1&...&GFbn)
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@ -37,46 +37,50 @@ New in spot 2.5.3.dev (not yet released)
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- genltl --ms-example can now take a two-range argument,
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(as --sejk-f above).
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Build:
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- ./configure --enable-max-accsets=N let you specify a maximum
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number of acceptance sets that Spot should support. The default
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is still 32, but this limit is no longer hardcoded. Larger values
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will cost additional memory and time.
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Library:
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- print_dot(), used print automata in GraphViz's format, underwent
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several changes:
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* option "a", for printing the acceptance condition, is now
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enabled by default. Option "A", introduced in Spot 2.4, can be
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used to hide the acceptance condition in case you do not want
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it. This change of course affects the --dot option of all the
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command-line tools, as well as the various way to display
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automata using the Python bindings.
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* when option "1" is used to hide state names and force the
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display of state numbers, the actual state names is now moved to
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the "tooltip" field of the state. The SVG files produced by
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"dot -Tsvg" will show those as popups. This is also done for
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state labels of Kripke structures.
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* the output digraph is now named using the name of the automaton
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if available, or the empty string otherwise. (Previous versions
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used to call all digraphs "G".) This name appears as a tooltip
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in SVG figures when the mouse is over the acceptance condition.
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* a new option "u" hides "true states" behind "exiting
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transitions". This can be used to display alternating automata
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in a way many people expect.
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* a new option "K" cancels the effect of "k" (which uses state
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labels whenever possible). This is most useful when one want to
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force transition-labeling of a Kripke structure, where "k" is
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usually the default.
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- spot::twa_graph::merge_states() is a new method that merges states
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with the exact same outgoing edges. As it performs no reordering of
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the edges, it is better to call it when you know that the edges in
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the twa_graph are sorted (e.g. after a call to merge_edges()).
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- You can now specify to Spot the number of acceptance marks you
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wish to use. This is a compile-time option, accessible through
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option --enable-max-accsets of the configure script. The default
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is still 32, but this limit is no longer hardcoded.
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- Option "a" of print_dot(), for printing the acceptance condition,
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is now enabled by default. Option "A", introduced in Spot 2.4,
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can be used to hide the acceptance condition in case you do not
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want it. This change of course affects the --dot option of all
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the command-line tools, as well as the various way to display
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automata using the Python bindings.
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- When option "1" is passed to print_dot() to hide state names
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and force the display of state numbers, the actual state names
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is now moved to the "tooltip" field of the state. The SVG
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files produced by "dot -Tsvg" will show those as popups.
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This is also done for state labels of kripke structures.
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- print_dot() will now name the output digraph using the name of the
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automaton if available, or the empty string otherwise. (Previous
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versions used to call all digraphs "G".) This name appears as a
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tooltip in SVG figures when the mouse is over the acceptance
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condition.
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- print_dot() has a new option "u" to hide "true states" behind
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"exiting transitions". This can be used to display alternating
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automata in a way many people expect.
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- print_dot() has a new option "K" to cancel the effect of "k"
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(which uses state labels whenever possible). This is most useful
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when one want to force transition-labeling of a Kripke structure,
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where "k" is usually the default.
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- cleanup_parity() and cleanup_parity_here() are smarter and now
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remove from the acceptance condition the parity colors that are
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not used in the automaton.
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@ -116,15 +120,11 @@ New in spot 2.5.3.dev (not yet released)
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They are most welcome in Python, since we used to redefine
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them every now and them.
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- spot::product() and spot::product_or() learned so produce an
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- spot::product() and spot::product_or() learned to produce an
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automaton with a simpler acceptance condition if one of the
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argument is a weak automaton. In this case the resulting
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acceptance condition is (usually) that of the other argument.
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- spot::parity_product() and spot::parity_product_or() were dropped.
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The code was buggy, hard to maintain, and these functions do not
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seem to be used.
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- spot::remove_alternation() was slightly improved on very-weak
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alternating automata: the labeling of the outgoing transitions in
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the resulting TGBA makes it more likely that simulation-based
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@ -151,6 +151,41 @@ New in spot 2.5.3.dev (not yet released)
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- the option --allow-dups of randltl now works properly
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Deprecation notice:
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- The type spot::acc_cond::mark_t has been overhauled and uses
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a custom bit-vector to represent acceptance sets instead of
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storing everything in a "unsigned int". This change is
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to accomodate configure's --enable-max-accsets=N option and
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has several effect:
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* The following shortcuts are deprecated:
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acc_cond::mark_t m1 = 0U;
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acc_cond::mark_t m2 = -1U;
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instead, use:
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acc_cond::mark_t m1 = {};
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acc_cond::mark_t m2 = acc_cond::mark_t::all();
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* acc_cond::mark_t::value_t is deprecated. It is now only
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defined when --enable-max-accsets=32 (the default) and
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equal to "unsigned" for backward compatibility reasons.
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Backward incompatibilities:
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- Functions spot::parity_product() and spot::parity_product_or()
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were removed. The code was unused, hard to maintain, and bogus.
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- The output of print_dot() now include the acceptance condition.
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Add option "A" (supported since version 2.4) to cancel that.
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- Because genltl now supports LTL pattern with two argumens, using
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--format=%L may output two comma-separated integer. This is an
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issue if you used to produce CSV files using for instance:
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genltl --format='%F,%L,%f' ...
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Make sure to quote %L to protect the potential commas:
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genltl --format='%F,"%L",%f' ...
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New in spot 2.5.3 (2018-04-20)
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Bugs fixed:
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