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* src/ltlvisit/tostring.cc (is_bare_word): New function.

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(to_string_visitor::visitor(const atomic_prop*)): Use is_bare_word
to better check which atomic proposition need to be quoted.
* src/ltlparse/ltlscan.ll: Do not allow identifiers starting with F_
or G_.
* src/ltltest/equals.test, src/ltltest/tostring.test: More tests.
This commit is contained in:
Alexandre Duret-Lutz 2004-06-23 11:36:03 +00:00
parent 3802528bfd
commit e9fd27e892
5 changed files with 39 additions and 6 deletions
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4
src/ltlparse/ltlscan.ll
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@ -96,10 +96,10 @@ flex_set_buffer(const char* buf)
used by a unary operator (F,G,X), unless this
letter is followed by a digit in which case we assume
it's an ATOMIC_PROP (even though F0 could be seen as Ffalse, we
don't).
don't, because Ffalse is never used in practice).
*/
<INITIAL>[a-zA-EH-WYZ_][a-zA-Z0-9_]* |
<INITIAL>[FGX][0-9_][a-zA-Z0-9_]* |
<INITIAL>[FGX][0-9][a-zA-Z0-9_]* |
/*
However if we have just parsed an atomic proposition, then we
are not expecting another atomic proposition, so we can be stricter