9123e56ff9
* src/ltlast/atomic_prop.hh: Declare instance_count(). * src/ltlast/binop.hh, src/ltlast/unop.hh, src/ltlast/multop.hh: Likewise. Also, really inherit for ref_formula this time. * src/ltlast/atomic_prop.cc, src/ltlast/binop.cc, src/ltlast/unop.cc, src/ltlast/multop.cc: On destruction, suppress the instance from the instance map. Implement instance_count(). * src/ltlast/formula.cc, src/ltlast/formula.hh, src/ltlast/ref_formula.cc, src/ltlast/ref_formula.hh: Add virtual destructors. * src/ltlparse/ltlparse.yy: Recover from binary operators with missing right hand operand (the point is just to destroy the the left hand operand). * src/ltltest/equals.cc, src/ltltest/readltl.cc, src/ltltest/tostring.cc: Destroy used formulae. Make sure instance_count()s are null are the end. * src/ltltest/parseerr.test: Adjust expected result, now that the parser lnows about missing right hand operands. * src/ltlvisit/destroy.hh, src/ltlvisit/destroy.cc, src/ltlvisit/postfix.hh, src/ltlvisit/postfix.cc: New files. * src/ltlvisit/Makefile.am (libltlvisit_la_SOURCES): Add them. * src/ltlvisit/lunabbrev.cc (Xor, Equiv): Clone formulae occurring twice in the rewritten expression.
31 lines
371 B
C++
31 lines
371 B
C++
#include "refformula.hh"
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#include <cassert>
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namespace spot
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{
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namespace ltl
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{
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ref_formula::ref_formula()
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: ref_count_(0)
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{
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}
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ref_formula::~ref_formula()
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{
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}
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void
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ref_formula::ref_()
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{
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++ref_count_;
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}
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bool
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ref_formula::unref_()
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{
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assert(ref_count_ > 0);
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return !--ref_count_;
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}
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}
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}
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