Initial revision
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Alexandre Duret-Lutz
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10 changed files with 6728 additions and 0 deletions
98
lbtt/src/BuchiProduct.cc
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98
lbtt/src/BuchiProduct.cc
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/*
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* Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004
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* Heikki Tauriainen <Heikki.Tauriainen@hut.fi>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "BuchiProduct.h"
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namespace Graph
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{
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/******************************************************************************
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*
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* Static member definitions for class BuchiProduct.
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*
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*****************************************************************************/
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map< ::Ltl::LtlFormula*, BuchiProduct::SatisfiabilityMapping,
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less< ::Ltl::LtlFormula*>, ALLOC(BuchiProduct::SatisfiabilityMapping) >
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BuchiProduct::sat_cache;
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/******************************************************************************
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*
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* Function definitions for class BuchiProduct.
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*
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*****************************************************************************/
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/* ========================================================================= */
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bool BuchiProduct::synchronizable
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(const Graph<GraphEdgeContainer>::Edge& transition_1,
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const Graph<GraphEdgeContainer>::Edge& transition_2)
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/* ----------------------------------------------------------------------------
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*
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* Description: Tests whether two transitions of two Büchi automata are
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* synchronizable by checking whether the conjunction of their
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* guard formulas is satisfiable.
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*
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* Arguments: transition_1, -- Constant references to the transitions.
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* transition_2
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*
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* Returns: true iff the transitions are synchronizable. The result is
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* also stored into `this->sat_cache' for later reference.
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*
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* ------------------------------------------------------------------------- */
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{
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using ::Ltl::LtlFormula;
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using ::Ltl::And;
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LtlFormula* guard_1 = &static_cast<const BuchiAutomaton::BuchiTransition&>
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(transition_1).guard();
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LtlFormula* guard_2 = &static_cast<const BuchiAutomaton::BuchiTransition&>
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(transition_2).guard();
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if (guard_2 > guard_1)
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{
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LtlFormula* swap_guard = guard_2;
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guard_2 = guard_1;
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guard_1 = swap_guard;
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}
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map<LtlFormula*, SatisfiabilityMapping, less<LtlFormula*>,
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ALLOC(SatisfiabilityMapping) >::iterator
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sat_cache_element = sat_cache.find(guard_1);
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if (sat_cache_element == sat_cache.end())
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sat_cache_element = sat_cache.insert
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(make_pair(guard_1, SatisfiabilityMapping())).first;
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else
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{
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SatisfiabilityMapping::const_iterator sat_result
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= sat_cache_element->second.find(guard_2);
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if (sat_result != sat_cache_element->second.end())
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return sat_result->second;
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}
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LtlFormula* f = &And::construct(*guard_1, *guard_2);
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const bool result = f->satisfiable();
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LtlFormula::destruct(f);
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sat_cache_element->second.insert(make_pair(guard_2, result));
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return result;
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}
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}
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512
lbtt/src/BuchiProduct.h
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lbtt/src/BuchiProduct.h
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/*
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* Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004
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* Heikki Tauriainen <Heikki.Tauriainen@hut.fi>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef BUCHIPRODUCT_H
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#define BUCHIPRODUCT_H
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#include <config.h>
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#include <deque>
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#include <iostream>
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#include <map>
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#include <string>
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#include <vector>
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#include "BitArray.h"
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#include "BuchiAutomaton.h"
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#include "EdgeContainer.h"
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#include "Graph.h"
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#include "LtlFormula.h"
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using namespace std;
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namespace Graph
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{
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/******************************************************************************
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*
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* A class with operations for checking the intersection of two Büchi automata
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* (represented as two BuchiAutomaton objects) for emptiness.
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*
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*****************************************************************************/
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class BuchiProduct
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{
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public:
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BuchiProduct /* Constructor. */
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(const Graph<GraphEdgeContainer>& a1,
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const Graph<GraphEdgeContainer>& a2);
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/* default copy constructor */
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~BuchiProduct(); /* Destructor. */
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/* default assignment operator */
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bool empty() const; /* Tells whether the
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* intersection of the
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* Büchi automata
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* associated with the
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* product object is
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* (trivially) empty.
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*/
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unsigned long int numberOfAcceptanceSets() const; /* Tells the number of
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* acceptance sets in the
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* intersection of the
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* automata associated with
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* the object.
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*/
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const BuchiAutomaton::BuchiState& firstComponent /* Mappings between an */
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(const Graph<GraphEdgeContainer>::size_type /* intersection state */
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state_id) const; /* identifier and states */
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const BuchiAutomaton::BuchiState& secondComponent /* of the underlying */
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(const Graph<GraphEdgeContainer>::size_type /* automata. */
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state_id) const;
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void mergeAcceptanceInformation /* Merges the acceptance */
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(const Graph<GraphEdgeContainer>::Node& state1, /* sets associated with */
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const Graph<GraphEdgeContainer>::Node& state2, /* a pair of states into */
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BitArray& acceptance_sets) const; /* a collection of sets. */
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void mergeAcceptanceInformation /* Merges the acceptance */
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(const Graph<GraphEdgeContainer>::Edge& /* sets associated with */
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transition1, /* a pair of */
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const Graph<GraphEdgeContainer>::Edge& /* transitions into a */
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transition2, /* collection of sets. */
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BitArray& acceptance_sets) const;
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void validateEdgeIterators /* Ensures that a pair */
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(const Graph<GraphEdgeContainer>::Node& /* of transition */
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state_1, /* iterators points to a */
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const Graph<GraphEdgeContainer>::Node& /* transition beginning */
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state_2, /* from a given state in */
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GraphEdgeContainer::const_iterator& /* the intersection of */
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transition_1, /* two Büchi automata. */
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GraphEdgeContainer::const_iterator&
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transition_2);
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void incrementEdgeIterators /* Updates a pair of */
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(const Graph<GraphEdgeContainer>::Node& /* transition iterators */
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state_1, /* to make them point to */
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const Graph<GraphEdgeContainer>::Node& /* the "next" transition */
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state_2, /* starting from a given */
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GraphEdgeContainer::const_iterator& /* state in the */
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transition_1, /* intersection of two */
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GraphEdgeContainer::const_iterator& /* Büchi automata. */
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transition_2);
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static void clearSatisfiabilityCache(); /* Clears information about
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* the satisfiability of
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* the guards of product
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* transitions.
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*/
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private:
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void mergeAcceptanceInformation /* Bitwise or between */
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(const BitArray& sets1, const BitArray& sets2, /* two "component" */
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BitArray& result) const; /* acceptance set
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* vectors and a result
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* vector.
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*/
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bool synchronizable /* Tests whether a pair */
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(const Graph<GraphEdgeContainer>::Edge& /* of transitions of two */
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transition_1, /* Büchi automata is */
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const Graph<GraphEdgeContainer>::Edge& /* synchronizable. */
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transition_2);
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const BuchiAutomaton& automaton_1; /* Automata associated */
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const BuchiAutomaton& automaton_2; /* with the BuchiProduct */
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/* object. */
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const unsigned long int /* Number of acceptance */
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number_of_acceptance_sets; /* sets in the
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* intersection of the
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* automata.
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*/
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typedef map< ::Ltl::LtlFormula*, bool, /* Type definition for */
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less< ::Ltl::LtlFormula*>, /* storing information */
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ALLOC(bool) > /* about the */
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SatisfiabilityMapping; /* satisfiability of the
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* guards of product
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* transitions.
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*/
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static map< ::Ltl::LtlFormula*, /* Result cache for */
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SatisfiabilityMapping, /* satisfiability tests. */
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less< ::Ltl::LtlFormula*>,
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ALLOC(SatisfiabilityMapping) >
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sat_cache;
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};
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/******************************************************************************
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*
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* Inline function definitions for class BuchiProduct.
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*
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*****************************************************************************/
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/* ========================================================================= */
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inline BuchiProduct::BuchiProduct
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(const Graph<GraphEdgeContainer>& a1, const Graph<GraphEdgeContainer>& a2) :
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automaton_1(static_cast<const BuchiAutomaton&>(a1)),
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automaton_2(static_cast<const BuchiAutomaton&>(a2)),
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number_of_acceptance_sets(static_cast<const BuchiAutomaton&>(a1)
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.numberOfAcceptanceSets()
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+ static_cast<const BuchiAutomaton&>(a2)
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.numberOfAcceptanceSets())
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/* ----------------------------------------------------------------------------
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*
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* Description: Constructor for class BuchiProduct. Initializes a new object
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* with operations for checking the emptiness of two Büchi
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* automata.
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*
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* Arguments: a1, a2 -- Constant references to two
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* Graph<GraphEdgeContainer> objects, assumed to be
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* BüchiAutomaton objects to which to apply the
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* operations.
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*
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* Returns: Nothing.
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*
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* ------------------------------------------------------------------------- */
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{
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}
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/* ========================================================================= */
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inline BuchiProduct::~BuchiProduct()
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/* ----------------------------------------------------------------------------
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*
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* Description: Destructor for class BuchiProduct.
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*
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* Arguments: None.
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*
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* Returns: Nothing.
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*
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* ------------------------------------------------------------------------- */
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{
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}
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/* ========================================================================= */
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inline bool BuchiProduct::empty() const
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/* ----------------------------------------------------------------------------
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*
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* Description: Tells whether the intersection of the Büchi automata
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* associated with a BuchiProduct object is (trivially) empty.
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*
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* Arguments: None.
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*
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* Returns: true iff either of the automata associated with the
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* BuchiProduct object is (trivially) empty (i.e., whether
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* either of the automata has no states).
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*
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* ------------------------------------------------------------------------- */
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{
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return (automaton_1.empty() || automaton_2.empty());
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}
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/* ========================================================================= */
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inline unsigned long int BuchiProduct::numberOfAcceptanceSets() const
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/* ----------------------------------------------------------------------------
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*
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* Description: Tells the number of acceptance sets in the intersection of
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* the two Büchi automata associated with a BuchiProduct object.
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*
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* Arguments: None.
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*
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* Returns: The number of acceptance sets in the intersection.
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*
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* ------------------------------------------------------------------------- */
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{
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return number_of_acceptance_sets;
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}
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/* ========================================================================= */
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inline const BuchiAutomaton::BuchiState& BuchiProduct::firstComponent
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(const Graph<GraphEdgeContainer>::size_type state_id) const
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/* ----------------------------------------------------------------------------
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*
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* Description: Function for accessing states of the "first" component
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* automaton in the intersection of two Büchi automata.
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*
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* Argument: state_id -- Identifier of a state in the component
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* automaton.
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*
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* Returns: A constant reference to a state in the component automaton.
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*
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* ------------------------------------------------------------------------- */
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{
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return automaton_1[state_id];
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}
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/* ========================================================================= */
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inline const BuchiAutomaton::BuchiState& BuchiProduct::secondComponent
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(const Graph<GraphEdgeContainer>::size_type state_id) const
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/* ----------------------------------------------------------------------------
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*
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* Description: Function for accessing states of the "second" component
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* automaton in the intersection of two Büchi automata.
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*
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* Argument: state_id -- Identifier of a state in the component
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* automaton.
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*
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* Returns: A constant reference to a state in the component automaton.
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*
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* ------------------------------------------------------------------------- */
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{
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return automaton_2[state_id];
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}
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/* ========================================================================= */
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inline void BuchiProduct::mergeAcceptanceInformation
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(const Graph<GraphEdgeContainer>::Node& state1,
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const Graph<GraphEdgeContainer>::Node& state2,
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BitArray& acceptance_sets) const
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/* ----------------------------------------------------------------------------
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*
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* Description: Merges the acceptance sets associated with a pair of states
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* of two Büchi automata into a collection of sets.
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*
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* Arguments: state1, state2 -- Constant references to the states of the
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* automata.
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* acceptance_sets -- A reference to a BitArray for storing
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* the result. The BitArray is assumed to
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* have capacity for
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* `this->number_of_acceptance_sets' bits.
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*
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* Returns: Nothing. Let n=`this->automaton_1.numberOfAcceptanceSets()';
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* after the operation, `acceptance_sets[i] = true' holds if
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* either
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* 0 <= i < n and
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* `state1.acceptanceSets().test(i) == true'
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||||||
|
* or 0 <= i - n < `this->automaton_2.numberOfAcceptanceSets()'
|
||||||
|
* and `state2.acceptanceSets().test(i - n) == true'.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
mergeAcceptanceInformation
|
||||||
|
(static_cast<const BuchiAutomaton::BuchiState&>(state1).acceptanceSets(),
|
||||||
|
static_cast<const BuchiAutomaton::BuchiState&>(state2).acceptanceSets(),
|
||||||
|
acceptance_sets);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void BuchiProduct::mergeAcceptanceInformation
|
||||||
|
(const Graph<GraphEdgeContainer>::Edge& transition1,
|
||||||
|
const Graph<GraphEdgeContainer>::Edge& transition2,
|
||||||
|
BitArray& acceptance_sets) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Merges the acceptance sets associated with a pair of
|
||||||
|
* transitions of two Büchi automata into a collection of
|
||||||
|
* acceptance sets.
|
||||||
|
*
|
||||||
|
* Arguments: transition1, -- Constant references to the transitions
|
||||||
|
* transition2 of the automata.
|
||||||
|
* acceptance_sets -- A reference to a BitArray for storing
|
||||||
|
* the result. The BitArray is assumed to
|
||||||
|
* have capacity for
|
||||||
|
* `this->number_of_acceptance_sets' bits.
|
||||||
|
*
|
||||||
|
* Returns: Nothing. Let n=`this->automaton_1.numberOfAcceptanceSets()';
|
||||||
|
* after the operation, `acceptance_sets[i] = true' holds if
|
||||||
|
* either
|
||||||
|
* 0 <= i < n and
|
||||||
|
* `transition1.acceptanceSets().test(i) == true'
|
||||||
|
* or 0 <= i - n < `this->automaton_2.numberOfAcceptanceSets()'
|
||||||
|
* and `transition2.acceptanceSets().test(i - n) == true'.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
mergeAcceptanceInformation
|
||||||
|
(static_cast<const BuchiAutomaton::BuchiTransition&>(transition1)
|
||||||
|
.acceptanceSets(),
|
||||||
|
static_cast<const BuchiAutomaton::BuchiTransition&>(transition2)
|
||||||
|
.acceptanceSets(),
|
||||||
|
acceptance_sets);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void BuchiProduct::mergeAcceptanceInformation
|
||||||
|
(const BitArray& sets1, const BitArray& sets2, BitArray& result) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Bitwise or between two acceptance set vectors and a result
|
||||||
|
* vector.
|
||||||
|
*
|
||||||
|
* Arguments: sets1, -- Constant references to two BitArrays having (at
|
||||||
|
* sets2 least) capacities
|
||||||
|
* `automaton_1.numberOfAcceptanceSets()' and
|
||||||
|
* `automaton_2.numberOfAcceptanceSets()',
|
||||||
|
* respectively.
|
||||||
|
* result -- A BitArray for storing the result, assumed to
|
||||||
|
* have room for at least
|
||||||
|
* `this->number_of_acceptance_sets' bits.
|
||||||
|
*
|
||||||
|
* Returns: Nothing. Let n=`this->automaton_1.numberOfAcceptanceSets()';
|
||||||
|
* after the operation, `result[i] = true' holds if
|
||||||
|
* either
|
||||||
|
* 0 <= i < n and `sets1[i] == true'
|
||||||
|
* or 0 <= i - n < `this->automaton_2.numberOfAcceptanceSets()'
|
||||||
|
* and `sets2[i - n] == true'.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
const unsigned long int shift
|
||||||
|
= automaton_1.numberOfAcceptanceSets();
|
||||||
|
unsigned long int acceptance_set;
|
||||||
|
for (acceptance_set = 0; acceptance_set < shift; ++acceptance_set)
|
||||||
|
{
|
||||||
|
if (sets1[acceptance_set])
|
||||||
|
result.setBit(acceptance_set);
|
||||||
|
}
|
||||||
|
for ( ; acceptance_set < number_of_acceptance_sets; ++acceptance_set)
|
||||||
|
{
|
||||||
|
if (sets2[acceptance_set - shift])
|
||||||
|
result.setBit(acceptance_set);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void BuchiProduct::validateEdgeIterators
|
||||||
|
(const Graph<GraphEdgeContainer>::Node& state_1,
|
||||||
|
const Graph<GraphEdgeContainer>::Node& state_2,
|
||||||
|
GraphEdgeContainer::const_iterator& transition_1,
|
||||||
|
GraphEdgeContainer::const_iterator& transition_2)
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Checks whether a pair of transition iterators corresponds to
|
||||||
|
* a transition beginning from a state in the intersection of
|
||||||
|
* two Büchi automata; if this is not the case, increments the
|
||||||
|
* iterators to make them point to a valid transition beginning
|
||||||
|
* from the state in the intersection (or to the "end" of the
|
||||||
|
* collection of transitions beginning from the state if no
|
||||||
|
* valid transition can be found by incrementing the iterators).
|
||||||
|
*
|
||||||
|
* Arguments: state_1, -- These variables determine the state in
|
||||||
|
* state_2 the intersection automaton; `state_1' and
|
||||||
|
* `state_2' should both be references to
|
||||||
|
* BuchiAutomaton::BuchiState objects.
|
||||||
|
* transition_1, -- References to the transition iterators.
|
||||||
|
* transition_2 Initially, `transition_1' and
|
||||||
|
* `transition_2' should point to two
|
||||||
|
* transitions starting from `state_1' and
|
||||||
|
* `state_2', respectively.
|
||||||
|
*
|
||||||
|
* Returns: Nothing. Upon return, `transition_1' and `transition_2' will
|
||||||
|
* either equal `state_1.edges().end()' and
|
||||||
|
* `state_2.edges().end()', respectively, or they will point to
|
||||||
|
* a pair of transitions beginning from `state_1' and `state_2'
|
||||||
|
* such that this pair of transitions corresponds to a
|
||||||
|
* transition starting from the intersection state determined by
|
||||||
|
* `state_1' and `state_2'.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
const GraphEdgeContainer& transitions_1 = state_1.edges();
|
||||||
|
const GraphEdgeContainer& transitions_2 = state_2.edges();
|
||||||
|
|
||||||
|
if (transition_1 == transitions_1.end())
|
||||||
|
{
|
||||||
|
transition_2 = transitions_2.end();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
if (transition_2 == transitions_2.end())
|
||||||
|
{
|
||||||
|
transition_1 = transitions_1.end();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!synchronizable(**transition_1, **transition_2))
|
||||||
|
incrementEdgeIterators(state_1, state_2, transition_1, transition_2);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void BuchiProduct::incrementEdgeIterators
|
||||||
|
(const Graph<GraphEdgeContainer>::Node& state_1,
|
||||||
|
const Graph<GraphEdgeContainer>::Node& state_2,
|
||||||
|
GraphEdgeContainer::const_iterator& transition_1,
|
||||||
|
GraphEdgeContainer::const_iterator& transition_2)
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Increments a pair of transition iterators to point to the
|
||||||
|
* "next" transition beginning from a state in the intersection
|
||||||
|
* of two Büchi automata. If no "next" transition exists, makes
|
||||||
|
* the iterators point to the "end" of the collection of
|
||||||
|
* transitions beginning from the state.
|
||||||
|
*
|
||||||
|
* Arguments: state_1, -- These variables determine the state in
|
||||||
|
* state_2 the intersection automaton; `state_1' and
|
||||||
|
* `state_2' should both be references to
|
||||||
|
* BuchiAutomaton::BuchiState objects.
|
||||||
|
* transition_1, -- References to the transition iterators.
|
||||||
|
* transition_2 Initially, `transition_1' and
|
||||||
|
* `transition_2' should point to two
|
||||||
|
* transitions starting from `state_1' and
|
||||||
|
* `state_2', respectively.
|
||||||
|
*
|
||||||
|
* Returns: Nothing. Upon return, `transition_1' and `transition_2' will
|
||||||
|
* either equal `state_1.edges().end()' and
|
||||||
|
* `state_2.edges().end()', respectively, or they will point to
|
||||||
|
* a pair of transitions beginning from `state_1' and `state_2'
|
||||||
|
* such that this pair of transitions corresponds to a
|
||||||
|
* transition starting from the intersection state determined by
|
||||||
|
* `state_1' and `state_2'.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
const GraphEdgeContainer& transitions_1 = state_1.edges();
|
||||||
|
const GraphEdgeContainer& transitions_2 = state_2.edges();
|
||||||
|
|
||||||
|
do
|
||||||
|
{
|
||||||
|
++transition_2;
|
||||||
|
if (transition_2 == transitions_2.end())
|
||||||
|
{
|
||||||
|
++transition_1;
|
||||||
|
if (transition_1 == transitions_1.end())
|
||||||
|
return;
|
||||||
|
transition_2 = transitions_2.begin();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
while (!synchronizable(**transition_1, **transition_2));
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void BuchiProduct::clearSatisfiabilityCache()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Clears information about the satisfiability of the guard
|
||||||
|
* formulas of product transitions.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
sat_cache.clear();
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* !BUCHIPRODUCT_H */
|
||||||
187
lbtt/src/IntervalList.cc
Normal file
187
lbtt/src/IntervalList.cc
Normal file
|
|
@ -0,0 +1,187 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2004
|
||||||
|
* Heikki Tauriainen <Heikki.Tauriainen@hut.fi>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "IntervalList.h"
|
||||||
|
#include "StringUtil.h"
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Function definitions for class IntervalList.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
void IntervalList::merge(unsigned long int min, unsigned long int max)
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Merges a new interval with a list of intervals.
|
||||||
|
*
|
||||||
|
* Arguments: min, max -- Upper and lower bound of the new interval.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
if (min > max)
|
||||||
|
return;
|
||||||
|
|
||||||
|
list<Interval, ALLOC(Interval) >::iterator interval;
|
||||||
|
for (interval = intervals.begin();
|
||||||
|
interval != intervals.end() && interval->second + 1 < min;
|
||||||
|
++interval)
|
||||||
|
;
|
||||||
|
|
||||||
|
if (interval == intervals.end())
|
||||||
|
{
|
||||||
|
intervals.insert(interval, make_pair(min, max));
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (interval->first <= min && max <= interval->second)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (max + 1 < interval->first)
|
||||||
|
{
|
||||||
|
intervals.insert(interval, make_pair(min, max));
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (min < interval->first)
|
||||||
|
interval->first = min;
|
||||||
|
|
||||||
|
if (interval->second < max)
|
||||||
|
{
|
||||||
|
interval->second = max;
|
||||||
|
list<Interval, ALLOC(Interval) >::iterator interval2 = interval;
|
||||||
|
++interval2;
|
||||||
|
while (interval2 != intervals.end()
|
||||||
|
&& interval2->first <= interval->second + 1)
|
||||||
|
{
|
||||||
|
if (interval->second < interval2->second)
|
||||||
|
interval->second = interval2->second;
|
||||||
|
list<Interval, ALLOC(Interval) >::iterator interval_to_erase = interval2;
|
||||||
|
++interval2;
|
||||||
|
intervals.erase(interval_to_erase);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
void IntervalList::remove(unsigned long int min, unsigned long int max)
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Removes a closed interval from an interval list.
|
||||||
|
*
|
||||||
|
* Arguments: min, max -- Bounds for the interval to remove.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
if (min > max)
|
||||||
|
return;
|
||||||
|
|
||||||
|
list<Interval, ALLOC(Interval) >::iterator interval;
|
||||||
|
for (interval = intervals.begin();
|
||||||
|
interval != intervals.end() && interval->second < min;
|
||||||
|
++interval)
|
||||||
|
;
|
||||||
|
|
||||||
|
while (interval != intervals.end())
|
||||||
|
{
|
||||||
|
if (max < interval->first) /* min <= max < imin <= imax */
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (interval->first < min)
|
||||||
|
{
|
||||||
|
if (max < interval->second) /* imin < min <= max < imax */
|
||||||
|
{
|
||||||
|
intervals.insert(interval, make_pair(interval->first, min - 1));
|
||||||
|
interval->first = max + 1;
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
interval->second = min - 1; /* imin < min <= imax <= max */
|
||||||
|
++interval;
|
||||||
|
}
|
||||||
|
else if (max < interval->second) /* min <= imin <= max < imax */
|
||||||
|
{
|
||||||
|
interval->first = max + 1;
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
else /* min <= imin <= imax <= max */
|
||||||
|
{
|
||||||
|
list<Interval, ALLOC(Interval) >::iterator interval_to_erase = interval;
|
||||||
|
++interval;
|
||||||
|
intervals.erase(interval_to_erase);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
bool IntervalList::covers(unsigned long int min, unsigned long int max) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Test whether an interval list covers a given interval.
|
||||||
|
*
|
||||||
|
* Arguments: min, max -- Upper and lower bound for the interval to test.
|
||||||
|
*
|
||||||
|
* Returns: True if the IntervalList covers the given interval.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
if (min > max)
|
||||||
|
return true; /* empty interval is always covered */
|
||||||
|
|
||||||
|
list<Interval, ALLOC(Interval) >::const_iterator interval;
|
||||||
|
for (interval = intervals.begin();
|
||||||
|
interval != intervals.end() && min > interval->second;
|
||||||
|
++interval)
|
||||||
|
;
|
||||||
|
|
||||||
|
if (interval == intervals.end())
|
||||||
|
return false;
|
||||||
|
|
||||||
|
return (min >= interval->first && max <= interval->second);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
string IntervalList::toString() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Converts the interval list to a string.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: A string listing the intervals in the interval list.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
string s;
|
||||||
|
for (list<Interval, ALLOC(Interval) >::const_iterator
|
||||||
|
interval = intervals.begin();
|
||||||
|
interval != intervals.end();
|
||||||
|
++interval)
|
||||||
|
{
|
||||||
|
if (interval != intervals.begin())
|
||||||
|
s += ',';
|
||||||
|
s += StringUtil::toString(interval->first) + "..."
|
||||||
|
+ StringUtil::toString(interval->second);
|
||||||
|
}
|
||||||
|
return s;
|
||||||
|
}
|
||||||
499
lbtt/src/IntervalList.h
Normal file
499
lbtt/src/IntervalList.h
Normal file
|
|
@ -0,0 +1,499 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2004
|
||||||
|
* Heikki Tauriainen <Heikki.Tauriainen@hut.fi>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef INTERVALLIST_H
|
||||||
|
#define INTERVALLIST_H
|
||||||
|
|
||||||
|
#include <config.h>
|
||||||
|
#include <list>
|
||||||
|
#include <string>
|
||||||
|
#include <utility>
|
||||||
|
#include "LbttAlloc.h"
|
||||||
|
|
||||||
|
using namespace std;
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* The IntervalList class represents a list of disjoint closed intervals
|
||||||
|
* formed from pairs of unsigned long integers. The class supports merging
|
||||||
|
* a new interval with a list of intervals, removing an interval from a list
|
||||||
|
* of intervals and checking whether the interval list covers a given element
|
||||||
|
* (or a given interval). The elements of the intervals can also be accessed
|
||||||
|
* in increasing order via IntervalList::const_iterator.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
class IntervalList
|
||||||
|
{
|
||||||
|
private:
|
||||||
|
typedef pair<unsigned long int,
|
||||||
|
unsigned long int>
|
||||||
|
Interval;
|
||||||
|
|
||||||
|
public:
|
||||||
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
||||||
|
|
||||||
|
class const_iterator /* A class for iterating */
|
||||||
|
{ /* over the elements of */
|
||||||
|
/* an IntervalList. */
|
||||||
|
public:
|
||||||
|
const_iterator(); /* Constructor. */
|
||||||
|
|
||||||
|
/* default copy constructor */
|
||||||
|
|
||||||
|
~const_iterator(); /* Destructor. */
|
||||||
|
|
||||||
|
/* default assignment operator */
|
||||||
|
|
||||||
|
bool operator==(const const_iterator& it) /* Comparison operators. */
|
||||||
|
const;
|
||||||
|
|
||||||
|
bool operator!=(const const_iterator& it)
|
||||||
|
const;
|
||||||
|
|
||||||
|
unsigned long int operator*() const; /* Dereference operator. */
|
||||||
|
|
||||||
|
unsigned long int operator++(); /* Prefix increment. */
|
||||||
|
|
||||||
|
unsigned long int operator++(int); /* Postfix increment. */
|
||||||
|
|
||||||
|
private:
|
||||||
|
const list<Interval, ALLOC(Interval) >* /* The interval list */
|
||||||
|
interval_list; /* associated with the */
|
||||||
|
/* iterator. */
|
||||||
|
|
||||||
|
list<Interval, ALLOC(Interval) > /* An iterator pointing */
|
||||||
|
::const_iterator interval; /* at the current */
|
||||||
|
/* interval list. */
|
||||||
|
|
||||||
|
unsigned long int element; /* Element currently
|
||||||
|
* pointed to by the
|
||||||
|
* iterator.
|
||||||
|
*/
|
||||||
|
|
||||||
|
friend class IntervalList;
|
||||||
|
};
|
||||||
|
|
||||||
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
||||||
|
|
||||||
|
IntervalList(); /* Constructor. */
|
||||||
|
|
||||||
|
~IntervalList(); /* Destructor. */
|
||||||
|
|
||||||
|
/* default copy constructor */
|
||||||
|
|
||||||
|
/* default assignment operator */
|
||||||
|
|
||||||
|
void merge(unsigned long int element); /* Merges a point interval
|
||||||
|
* with the list of
|
||||||
|
* intervals.
|
||||||
|
*/
|
||||||
|
|
||||||
|
void merge /* Merges a new interval */
|
||||||
|
(unsigned long int min, unsigned long int max); /* with the list of
|
||||||
|
* intervals.
|
||||||
|
*/
|
||||||
|
|
||||||
|
void remove(unsigned long int element); /* Removes an element from
|
||||||
|
* the list of intervals.
|
||||||
|
*/
|
||||||
|
|
||||||
|
void remove /* Removes an interval */
|
||||||
|
(unsigned long int min, unsigned long int max); /* from the list of
|
||||||
|
* intervals.
|
||||||
|
*/
|
||||||
|
|
||||||
|
bool covers(unsigned long int element) const; /* Tests whether the
|
||||||
|
* interval list covers an
|
||||||
|
* element.
|
||||||
|
*/
|
||||||
|
|
||||||
|
bool covers /* Tests whether the */
|
||||||
|
(unsigned long int min, unsigned long int max) /* interval list covers */
|
||||||
|
const; /* an interval. */
|
||||||
|
|
||||||
|
const_iterator begin() const; /* Returns an iterator to
|
||||||
|
* the beginning of the
|
||||||
|
* interval list.
|
||||||
|
*/
|
||||||
|
|
||||||
|
const_iterator end() const; /* Returns an iterator to
|
||||||
|
* the end of the interval
|
||||||
|
* list.
|
||||||
|
*/
|
||||||
|
|
||||||
|
typedef const_iterator iterator; /* The interval list
|
||||||
|
* cannot be modified with
|
||||||
|
* iterators.
|
||||||
|
*/
|
||||||
|
|
||||||
|
typedef list<Interval, ALLOC(Interval) > /* Size type. */
|
||||||
|
::size_type size_type;
|
||||||
|
|
||||||
|
size_type size() const; /* Tell the number of
|
||||||
|
* disjoint intervals in
|
||||||
|
* the interval list.
|
||||||
|
*/
|
||||||
|
|
||||||
|
size_type max_size() const; /* Tell the maximum
|
||||||
|
* allowable number of
|
||||||
|
* disjoint intervals in
|
||||||
|
* the interval list.
|
||||||
|
*/
|
||||||
|
|
||||||
|
bool empty() const; /* Tell whether the
|
||||||
|
* interval list is empty.
|
||||||
|
*/
|
||||||
|
|
||||||
|
void clear(); /* Makes the interval list
|
||||||
|
* empty.
|
||||||
|
*/
|
||||||
|
|
||||||
|
string toString() const; /* Converts the interval
|
||||||
|
* list to a string.
|
||||||
|
*/
|
||||||
|
|
||||||
|
private:
|
||||||
|
list<Interval, ALLOC(Interval) > intervals; /* List of intervals. */
|
||||||
|
|
||||||
|
friend class const_iterator;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Inline function definitions for class IntervalList.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline IntervalList::IntervalList()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Constructor for class IntervalList. Creates an empty list of
|
||||||
|
* intervals.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline IntervalList::~IntervalList()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Destructor for class IntervalList.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void IntervalList::merge(unsigned long int element)
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Merges an element (a point interval) with an IntervalList.
|
||||||
|
*
|
||||||
|
* Arguments: element -- Element to merge.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
merge(element, element);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline bool IntervalList::covers(unsigned long int element) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Tests whether an interval list covers an element.
|
||||||
|
*
|
||||||
|
* Arguments: element -- Element to test.
|
||||||
|
*
|
||||||
|
* Returns: True if the IntervalList covers the element.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return covers(element, element);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline IntervalList::size_type IntervalList::size() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Tells the number of disjoint intervals in an IntervalList.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Number of disjoint intervals in the IntervalList.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return intervals.size();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline IntervalList::size_type IntervalList::max_size() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Tells the maximum allowable number of disjoint intervals in
|
||||||
|
* an IntervalList.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Maximum allowable number of disjoint intervals in the
|
||||||
|
* IntervalList.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return intervals.max_size();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline bool IntervalList::empty() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Tells whether an IntervalList is empty.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: True if the IntervalList is empty.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return intervals.empty();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void IntervalList::clear()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Makes an IntervalList empty.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
intervals.clear();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline IntervalList::const_iterator IntervalList::begin() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Returns an IntervalList::const_iterator pointing to the
|
||||||
|
* beginning of an IntervalList.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: An IntervalList::const_iterator pointing to the beginning of
|
||||||
|
* the IntervalList.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
const_iterator it;
|
||||||
|
it.interval_list = &this->intervals;
|
||||||
|
it.interval = intervals.begin();
|
||||||
|
if (it.interval != intervals.end())
|
||||||
|
it.element = it.interval->first;
|
||||||
|
else
|
||||||
|
it.element = 0;
|
||||||
|
return it;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline IntervalList::const_iterator IntervalList::end() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Returns an IntervalList::const_iterator pointing to the end
|
||||||
|
* of an IntervalList.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: An IntervalList::const_iterator pointing to the end of the
|
||||||
|
* IntervalList.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
const_iterator it;
|
||||||
|
it.interval_list = &this->intervals;
|
||||||
|
it.interval = intervals.end();
|
||||||
|
it.element = 0;
|
||||||
|
return it;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Inline function definitions for class IntervalList::const_iterator.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline IntervalList::const_iterator::const_iterator()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Constructor for class IntervalList::const_iterator.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline IntervalList::const_iterator::~const_iterator()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Destructor for class IntervalList::const_iterator.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline bool IntervalList::const_iterator::operator==
|
||||||
|
(const const_iterator& it) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Equality test for two IntervalList::const_iterators. Two
|
||||||
|
* IntervalList::const_iterators are equal if and only if they
|
||||||
|
* point to the same interval of an interval list and the same
|
||||||
|
* element in the interval.
|
||||||
|
*
|
||||||
|
* Argument: it -- A constant reference to another
|
||||||
|
* IntervalList::const_iterator.
|
||||||
|
*
|
||||||
|
* Returns: Result of the equality test (a truth value).
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return (interval_list == it.interval_list && interval == it.interval
|
||||||
|
&& element == it.element);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline bool IntervalList::const_iterator::operator!=
|
||||||
|
(const const_iterator& it) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Inequality test for two IntervalList::const_iterators. Two
|
||||||
|
* IntervalList::const_iterators are not equal if and only if
|
||||||
|
* they point to different intervals of an interval list or to
|
||||||
|
* different elements of the same interval in the list.
|
||||||
|
*
|
||||||
|
* Argument: it -- A constant reference to another
|
||||||
|
* IntervalList::const_iterator.
|
||||||
|
*
|
||||||
|
* Returns: Result of the inequality test (a truth value).
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return (interval_list != it.interval_list || interval != it.interval
|
||||||
|
|| element != it.element);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline unsigned long int IntervalList::const_iterator::operator*() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Dereferencing operator for IntervalList::const_iterator.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: The element currently pointed to by the iterator.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return element;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline unsigned long int IntervalList::const_iterator::operator++()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Prefix increment operator for IntervalList::const_iterator.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: The element following the "current" element in the interval
|
||||||
|
* list.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
if (element == interval->second)
|
||||||
|
{
|
||||||
|
++interval;
|
||||||
|
if (interval != interval_list->end())
|
||||||
|
element = interval->first;
|
||||||
|
else
|
||||||
|
element = 0;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
++element;
|
||||||
|
|
||||||
|
return element;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline unsigned long int IntervalList::const_iterator::operator++(int)
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Postfix increment operator for IntervalList::const_iterator.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: The "current" element in the interval list.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
unsigned long int current_element = element;
|
||||||
|
if (element == interval->second)
|
||||||
|
{
|
||||||
|
++interval;
|
||||||
|
if (interval != interval_list->end())
|
||||||
|
element = interval->first;
|
||||||
|
else
|
||||||
|
element = 0;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
++element;
|
||||||
|
|
||||||
|
return current_element;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* INTERVALLIST_H */
|
||||||
610
lbtt/src/Ltl-parse.yy
Normal file
610
lbtt/src/Ltl-parse.yy
Normal file
|
|
@ -0,0 +1,610 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2004
|
||||||
|
* Heikki Tauriainen <Heikki.Tauriainen@hut.fi>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
%{
|
||||||
|
#include <config.h>
|
||||||
|
#include <cctype>
|
||||||
|
#include <climits>
|
||||||
|
#include <cstring>
|
||||||
|
#include <istream>
|
||||||
|
#include <set>
|
||||||
|
#include "Exception.h"
|
||||||
|
#include "LbttAlloc.h"
|
||||||
|
#include "LtlFormula.h"
|
||||||
|
|
||||||
|
using namespace Ltl;
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Variables and functions used for parsing an LTL formula.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
static Exceptional_istream* estream; /* Pointer to input stream.
|
||||||
|
*/
|
||||||
|
|
||||||
|
static LtlFormula* result; /* This variable stores the
|
||||||
|
* result after a call to
|
||||||
|
* ltl_parse.
|
||||||
|
*/
|
||||||
|
|
||||||
|
static std::set<LtlFormula*, less<LtlFormula*>, /* Intermediate results. */
|
||||||
|
ALLOC(LtlFormula*) > /* (This set is used */
|
||||||
|
intermediate_results; /* for keeping track of
|
||||||
|
* the subformulas of a
|
||||||
|
* partially constructed
|
||||||
|
* formula in case the
|
||||||
|
* memory allocated for
|
||||||
|
* the subformulas needs
|
||||||
|
* to be freed because
|
||||||
|
* of a parse error.)
|
||||||
|
*/
|
||||||
|
|
||||||
|
static int ltl_lex(); /* The lexical scanner. */
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Function for reporting parse errors.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
static void ltl_error(const char*)
|
||||||
|
{
|
||||||
|
throw LtlFormula::ParseErrorException("error parsing LTL formula");
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Function for updating the set of intermediate results.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
inline LtlFormula* newFormula(LtlFormula& f)
|
||||||
|
{
|
||||||
|
intermediate_results.insert(&f);
|
||||||
|
return &f;
|
||||||
|
}
|
||||||
|
|
||||||
|
%}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
%name-prefix="ltl_"
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Declarations for terminal and nonterminal symbols used in the grammar rules
|
||||||
|
* below.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
%union {
|
||||||
|
class LtlFormula* formula;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Uninterpreted symbols. */
|
||||||
|
|
||||||
|
%token LTLPARSE_LPAR LTLPARSE_RPAR LTLPARSE_FALSE LTLPARSE_TRUE
|
||||||
|
LTLPARSE_UNKNOWN
|
||||||
|
|
||||||
|
/* Atomic propositions. */
|
||||||
|
|
||||||
|
%token <formula> LTLPARSE_ATOM
|
||||||
|
|
||||||
|
/* Operators. */
|
||||||
|
|
||||||
|
%nonassoc LTLPARSE_UNTIL LTLPARSE_RELEASE LTLPARSE_WEAK_UNTIL
|
||||||
|
LTLPARSE_STRONG_RELEASE LTLPARSE_BEFORE
|
||||||
|
%left LTLPARSE_IMPLY LTLPARSE_EQUIV LTLPARSE_XOR
|
||||||
|
%left LTLPARSE_OR
|
||||||
|
%left LTLPARSE_AND
|
||||||
|
%nonassoc LTLPARSE_NOT LTLPARSE_NEXT LTLPARSE_FINALLY LTLPARSE_GLOBALLY
|
||||||
|
%nonassoc LTLPARSE_EQUALS
|
||||||
|
|
||||||
|
/* Compound formulas. */
|
||||||
|
|
||||||
|
%type <formula> formula atomic_formula unary_formula prefix_op_formula
|
||||||
|
binary_formula prefix_b_formula infix_b_formula
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Grammar rule definitions.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
%%
|
||||||
|
|
||||||
|
ltl_formula: formula
|
||||||
|
{ result = $1; }
|
||||||
|
;
|
||||||
|
|
||||||
|
formula: atomic_formula
|
||||||
|
{ $$ = $1; }
|
||||||
|
|
||||||
|
| unary_formula
|
||||||
|
{ $$ = $1; }
|
||||||
|
|
||||||
|
| binary_formula
|
||||||
|
{ $$ = $1; }
|
||||||
|
|
||||||
|
| LTLPARSE_LPAR formula LTLPARSE_RPAR
|
||||||
|
{ $$ = $2; }
|
||||||
|
;
|
||||||
|
|
||||||
|
atomic_formula: LTLPARSE_ATOM
|
||||||
|
{ $$ = $1; }
|
||||||
|
|
||||||
|
| LTLPARSE_ATOM LTLPARSE_EQUALS LTLPARSE_FALSE
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
$$ = newFormula(Not::construct($1));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_ATOM LTLPARSE_EQUALS LTLPARSE_TRUE
|
||||||
|
{ $$ = $1; }
|
||||||
|
|
||||||
|
| LTLPARSE_FALSE
|
||||||
|
{ $$ = newFormula(False::construct()); }
|
||||||
|
|
||||||
|
| LTLPARSE_TRUE
|
||||||
|
{ $$ = newFormula(True::construct()); }
|
||||||
|
;
|
||||||
|
|
||||||
|
unary_formula: LTLPARSE_NOT formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
$$ = newFormula(Not::construct($2));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_NEXT formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
$$ = newFormula(Next::construct($2));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_FINALLY formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
$$ = newFormula(Finally::construct($2));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_GLOBALLY formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
$$ = newFormula(Globally::construct($2));
|
||||||
|
}
|
||||||
|
;
|
||||||
|
|
||||||
|
prefix_op_formula: atomic_formula
|
||||||
|
{ $$ = $1; }
|
||||||
|
|
||||||
|
| unary_formula
|
||||||
|
{ $$ = $1; }
|
||||||
|
|
||||||
|
| prefix_b_formula
|
||||||
|
{ $$ = $1; }
|
||||||
|
|
||||||
|
| LTLPARSE_LPAR formula LTLPARSE_RPAR
|
||||||
|
{ $$ = $2; }
|
||||||
|
;
|
||||||
|
|
||||||
|
binary_formula: prefix_b_formula
|
||||||
|
{ $$ = $1; }
|
||||||
|
| infix_b_formula
|
||||||
|
{ $$ = $1; }
|
||||||
|
;
|
||||||
|
|
||||||
|
prefix_b_formula: LTLPARSE_AND prefix_op_formula prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(And::construct($2, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_OR prefix_op_formula prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Or::construct($2, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_IMPLY prefix_op_formula prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Imply::construct($2, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_EQUIV prefix_op_formula prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Equiv::construct($2, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_XOR prefix_op_formula prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Xor::construct($2, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_UNTIL prefix_op_formula prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Until::construct($2, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_RELEASE prefix_op_formula prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(V::construct($2, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_WEAK_UNTIL prefix_op_formula prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(WeakUntil::construct($2, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_STRONG_RELEASE prefix_op_formula
|
||||||
|
prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(StrongRelease::construct($2, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| LTLPARSE_BEFORE prefix_op_formula prefix_op_formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($2);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Before::construct($2, $3));
|
||||||
|
}
|
||||||
|
;
|
||||||
|
|
||||||
|
infix_b_formula: formula LTLPARSE_AND formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(And::construct($1, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| formula LTLPARSE_OR formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Or::construct($1, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| formula LTLPARSE_IMPLY formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Imply::construct($1, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| formula LTLPARSE_EQUIV formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Equiv::construct($1, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| formula LTLPARSE_XOR formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Xor::construct($1, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| formula LTLPARSE_UNTIL formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Until::construct($1, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| formula LTLPARSE_RELEASE formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(V::construct($1, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| formula LTLPARSE_WEAK_UNTIL formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(WeakUntil::construct($1, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| formula LTLPARSE_STRONG_RELEASE formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(StrongRelease::construct($1, $3));
|
||||||
|
}
|
||||||
|
|
||||||
|
| formula LTLPARSE_BEFORE formula
|
||||||
|
{
|
||||||
|
intermediate_results.erase($1);
|
||||||
|
intermediate_results.erase($3);
|
||||||
|
$$ = newFormula(Before::construct($1, $3));
|
||||||
|
}
|
||||||
|
;
|
||||||
|
|
||||||
|
%%
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Helper function for reading lexical tokens from a stream.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
static inline size_t matchCharactersFromStream
|
||||||
|
(istream& stream, char* chars)
|
||||||
|
{
|
||||||
|
size_t num_matched;
|
||||||
|
for (num_matched = 0; *chars != '\0' && stream.peek() == *chars; ++chars)
|
||||||
|
{
|
||||||
|
stream.ignore(1);
|
||||||
|
++num_matched;
|
||||||
|
}
|
||||||
|
return num_matched;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Main interface to the parser.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
namespace Ltl
|
||||||
|
{
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
LtlFormula* parseFormula(istream& stream)
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Parses an LTL formula from a stream. The formula should be
|
||||||
|
* in one of the formats used by the tools lbtt 1.0.x (both
|
||||||
|
* prefix and infix form), Spin/Temporal Massage Parlor/LTL2BA,
|
||||||
|
* LTL2AUT or Wring 1.1.0 (actually, the grammar is basically
|
||||||
|
* a combination of the grammars of the above tools with the
|
||||||
|
* exception that propositions should always be written in the
|
||||||
|
* form `pN' for some integer N; in principle, it is possible to
|
||||||
|
* use a mixed syntax for the formula). The input should be
|
||||||
|
* terminated with a newline.
|
||||||
|
*
|
||||||
|
* Argument: stream -- A reference to the input stream.
|
||||||
|
*
|
||||||
|
* Returns: A pointer to the formula. The function throws an
|
||||||
|
* LtlFormula::ParseErrorException if the syntax is incorrect,
|
||||||
|
* or an IOException in case of an end-of-file or another I/O
|
||||||
|
* error.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
Exceptional_istream es(&stream, ios::badbit | ios::failbit | ios::eofbit);
|
||||||
|
estream = &es;
|
||||||
|
intermediate_results.clear();
|
||||||
|
|
||||||
|
try
|
||||||
|
{
|
||||||
|
ltl_parse();
|
||||||
|
}
|
||||||
|
catch (...)
|
||||||
|
{
|
||||||
|
for (std::set<LtlFormula*, less<LtlFormula*>, ALLOC(LtlFormula*) >
|
||||||
|
::const_iterator f = intermediate_results.begin();
|
||||||
|
f != intermediate_results.end();
|
||||||
|
++f)
|
||||||
|
LtlFormula::destruct(*f);
|
||||||
|
throw;
|
||||||
|
}
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* The lexical scanner.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
static int ltl_lex()
|
||||||
|
{
|
||||||
|
char c;
|
||||||
|
std::istream& stream = static_cast<istream&>(*estream);
|
||||||
|
|
||||||
|
do
|
||||||
|
{
|
||||||
|
estream->get(c);
|
||||||
|
}
|
||||||
|
while (isspace(c) && c != '\n');
|
||||||
|
|
||||||
|
switch (c)
|
||||||
|
{
|
||||||
|
case '\n' : return 0;
|
||||||
|
|
||||||
|
case '(' :
|
||||||
|
return (matchCharactersFromStream(stream, ")") == 1
|
||||||
|
? LTLPARSE_NEXT
|
||||||
|
: LTLPARSE_LPAR);
|
||||||
|
|
||||||
|
case ')' : return LTLPARSE_RPAR;
|
||||||
|
|
||||||
|
case 'f' :
|
||||||
|
switch (matchCharactersFromStream(stream, "alse"))
|
||||||
|
{
|
||||||
|
case 0 : case 4 :
|
||||||
|
return LTLPARSE_FALSE;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
return LTLPARSE_UNKNOWN;
|
||||||
|
|
||||||
|
case '0' : return LTLPARSE_FALSE;
|
||||||
|
|
||||||
|
case 't' :
|
||||||
|
switch (matchCharactersFromStream(stream, "rue"))
|
||||||
|
{
|
||||||
|
case 0 : case 3 :
|
||||||
|
return LTLPARSE_TRUE;
|
||||||
|
default :
|
||||||
|
return LTLPARSE_UNKNOWN;
|
||||||
|
}
|
||||||
|
|
||||||
|
case 'T' :
|
||||||
|
return (matchCharactersFromStream(stream, "RUE") == 3
|
||||||
|
? LTLPARSE_TRUE
|
||||||
|
: LTLPARSE_UNKNOWN);
|
||||||
|
|
||||||
|
case '1' : return LTLPARSE_TRUE;
|
||||||
|
|
||||||
|
case '!' : case '~' : return LTLPARSE_NOT;
|
||||||
|
|
||||||
|
case '&' :
|
||||||
|
matchCharactersFromStream(stream, "&");
|
||||||
|
return LTLPARSE_AND;
|
||||||
|
|
||||||
|
case '/' :
|
||||||
|
return (matchCharactersFromStream(stream, "\\") == 1
|
||||||
|
? LTLPARSE_AND
|
||||||
|
: LTLPARSE_UNKNOWN);
|
||||||
|
|
||||||
|
case '*' : return LTLPARSE_AND;
|
||||||
|
|
||||||
|
case '|' :
|
||||||
|
matchCharactersFromStream(stream, "|");
|
||||||
|
return LTLPARSE_OR;
|
||||||
|
|
||||||
|
case '\\' :
|
||||||
|
return (matchCharactersFromStream(stream, "/") == 1
|
||||||
|
? LTLPARSE_OR
|
||||||
|
: LTLPARSE_UNKNOWN);
|
||||||
|
|
||||||
|
case '+' : return LTLPARSE_OR;
|
||||||
|
|
||||||
|
case '=' :
|
||||||
|
return (matchCharactersFromStream(stream, ">") == 1
|
||||||
|
? LTLPARSE_IMPLY
|
||||||
|
: LTLPARSE_EQUALS);
|
||||||
|
|
||||||
|
case '-' :
|
||||||
|
return (matchCharactersFromStream(stream, ">") == 1
|
||||||
|
? LTLPARSE_IMPLY
|
||||||
|
: LTLPARSE_UNKNOWN);
|
||||||
|
|
||||||
|
case 'i' : return LTLPARSE_IMPLY;
|
||||||
|
|
||||||
|
case '<' :
|
||||||
|
if (matchCharactersFromStream(stream, ">") == 1)
|
||||||
|
return LTLPARSE_FINALLY;
|
||||||
|
return (matchCharactersFromStream(stream, "->") == 2
|
||||||
|
|| matchCharactersFromStream(stream, "=>") == 2
|
||||||
|
? LTLPARSE_EQUIV
|
||||||
|
: LTLPARSE_UNKNOWN);
|
||||||
|
|
||||||
|
case 'e' : return LTLPARSE_EQUIV;
|
||||||
|
|
||||||
|
case 'x' :
|
||||||
|
return (matchCharactersFromStream(stream, "or") == 2
|
||||||
|
? LTLPARSE_XOR
|
||||||
|
: LTLPARSE_UNKNOWN);
|
||||||
|
|
||||||
|
case '^' : return LTLPARSE_XOR;
|
||||||
|
|
||||||
|
case 'X' : return LTLPARSE_NEXT;
|
||||||
|
|
||||||
|
case 'U' : return LTLPARSE_UNTIL;
|
||||||
|
|
||||||
|
case 'V' : case 'R' : return LTLPARSE_RELEASE;
|
||||||
|
|
||||||
|
case 'W' : return LTLPARSE_WEAK_UNTIL;
|
||||||
|
|
||||||
|
case 'M' : return LTLPARSE_STRONG_RELEASE;
|
||||||
|
|
||||||
|
case 'B' : return LTLPARSE_BEFORE;
|
||||||
|
|
||||||
|
case 'F' :
|
||||||
|
switch (matchCharactersFromStream(stream, "ALSE"))
|
||||||
|
{
|
||||||
|
case 0 :
|
||||||
|
return LTLPARSE_FINALLY;
|
||||||
|
case 4 :
|
||||||
|
return LTLPARSE_FALSE;
|
||||||
|
default :
|
||||||
|
return LTLPARSE_UNKNOWN;
|
||||||
|
}
|
||||||
|
|
||||||
|
case '[' :
|
||||||
|
return (matchCharactersFromStream(stream, "]") == 1
|
||||||
|
? LTLPARSE_GLOBALLY
|
||||||
|
: LTLPARSE_UNKNOWN);
|
||||||
|
|
||||||
|
case 'G' : return LTLPARSE_GLOBALLY;
|
||||||
|
|
||||||
|
case 'p' :
|
||||||
|
{
|
||||||
|
long int id = 0;
|
||||||
|
bool id_ok = false;
|
||||||
|
int ch = stream.peek();
|
||||||
|
while (ch >= '0' && ch <= '9')
|
||||||
|
{
|
||||||
|
id_ok = true;
|
||||||
|
estream->get(c);
|
||||||
|
if (LONG_MAX / 10 < id)
|
||||||
|
throw LtlFormula::ParseErrorException
|
||||||
|
("error parsing LTL formula (proposition identifier out of "
|
||||||
|
"range)");
|
||||||
|
id *= 10;
|
||||||
|
id += (c - '0');
|
||||||
|
ch = stream.peek();
|
||||||
|
}
|
||||||
|
|
||||||
|
if (id_ok)
|
||||||
|
{
|
||||||
|
ltl_lval.formula = newFormula(Atom::construct(id));
|
||||||
|
return LTLPARSE_ATOM;
|
||||||
|
}
|
||||||
|
return LTLPARSE_UNKNOWN;
|
||||||
|
}
|
||||||
|
|
||||||
|
default : return LTLPARSE_UNKNOWN;
|
||||||
|
}
|
||||||
|
}
|
||||||
2936
lbtt/src/Product.h
Normal file
2936
lbtt/src/Product.h
Normal file
File diff suppressed because it is too large
Load diff
1174
lbtt/src/SccCollection.h
Normal file
1174
lbtt/src/SccCollection.h
Normal file
File diff suppressed because it is too large
Load diff
430
lbtt/src/StateSpaceProduct.h
Normal file
430
lbtt/src/StateSpaceProduct.h
Normal file
|
|
@ -0,0 +1,430 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004
|
||||||
|
* Heikki Tauriainen <Heikki.Tauriainen@hut.fi>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef STATESPACEPRODUCT_H
|
||||||
|
#define STATESPACEPRODUCT_H
|
||||||
|
|
||||||
|
#include <config.h>
|
||||||
|
#include "BitArray.h"
|
||||||
|
#include "BuchiAutomaton.h"
|
||||||
|
#include "EdgeContainer.h"
|
||||||
|
#include "Graph.h"
|
||||||
|
#include "StateSpace.h"
|
||||||
|
|
||||||
|
using namespace std;
|
||||||
|
|
||||||
|
namespace Graph
|
||||||
|
{
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* A class with operations for checking the product of a Büchi automaton and
|
||||||
|
* a state space for emptiness.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
class StateSpaceProduct
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
StateSpaceProduct /* Constructor. */
|
||||||
|
(const Graph<GraphEdgeContainer>& a,
|
||||||
|
const Graph<GraphEdgeContainer>& s);
|
||||||
|
|
||||||
|
/* default copy constructor */
|
||||||
|
|
||||||
|
~StateSpaceProduct(); /* Destructor. */
|
||||||
|
|
||||||
|
/* default assignment operator */
|
||||||
|
|
||||||
|
bool empty() const; /* Tells whether the
|
||||||
|
* product of a Büchi
|
||||||
|
* automaton and a state
|
||||||
|
* space is (trivially)
|
||||||
|
* empty.
|
||||||
|
*/
|
||||||
|
|
||||||
|
unsigned long int numberOfAcceptanceSets() const; /* Tells the number of
|
||||||
|
* acceptance sets in a
|
||||||
|
* Büchi automaton in its
|
||||||
|
* product with a state
|
||||||
|
* space.
|
||||||
|
*/
|
||||||
|
|
||||||
|
const BuchiAutomaton::BuchiState& firstComponent /* Mappings between a */
|
||||||
|
(const Graph<GraphEdgeContainer>::size_type /* product state */
|
||||||
|
state_id) const; /* identifier and */
|
||||||
|
const StateSpace::State& secondComponent /* states of the Büchi */
|
||||||
|
(const Graph<GraphEdgeContainer>::size_type /* automaton and the */
|
||||||
|
state_id) const; /* state space forming
|
||||||
|
* the product.
|
||||||
|
*/
|
||||||
|
|
||||||
|
void mergeAcceptanceInformation /* Merges the acceptance */
|
||||||
|
(const Graph<GraphEdgeContainer>::Node& state, /* sets associated with */
|
||||||
|
const Graph<GraphEdgeContainer>::Node&, /* a state in the Büchi */
|
||||||
|
BitArray& acceptance_sets) const; /* automaton into a
|
||||||
|
* collection of sets.
|
||||||
|
*/
|
||||||
|
|
||||||
|
void mergeAcceptanceInformation /* Merges the acceptance */
|
||||||
|
(const Graph<GraphEdgeContainer>::Edge& /* sets associated with */
|
||||||
|
buchi_transition, /* a transition in the */
|
||||||
|
const Graph<GraphEdgeContainer>::Edge&, /* Büchi automaton into */
|
||||||
|
BitArray& acceptance_sets) const; /* a collection of sets. */
|
||||||
|
|
||||||
|
void validateEdgeIterators /* Ensures that a pair */
|
||||||
|
(const Graph<GraphEdgeContainer>::Node& /* of transition */
|
||||||
|
buchi_state, /* iterators points to a */
|
||||||
|
const Graph<GraphEdgeContainer>::Node& /* transition beginning */
|
||||||
|
system_state, /* from a given state in */
|
||||||
|
GraphEdgeContainer::const_iterator& /* the product of a */
|
||||||
|
buchi_transition, /* Büchi automaton and */
|
||||||
|
GraphEdgeContainer::const_iterator& /* a state space. */
|
||||||
|
system_transition) const;
|
||||||
|
|
||||||
|
void incrementEdgeIterators /* Updates a pair of */
|
||||||
|
(const Graph<GraphEdgeContainer>::Node& /* transition iterators */
|
||||||
|
buchi_state, /* to make them point to */
|
||||||
|
const Graph<GraphEdgeContainer>::Node& /* the "next" transition */
|
||||||
|
system_state, /* starting from a given */
|
||||||
|
GraphEdgeContainer::const_iterator& /* state in the product */
|
||||||
|
buchi_transition, /* of a Büchi automaton */
|
||||||
|
GraphEdgeContainer::const_iterator& /* and a state space. */
|
||||||
|
system_transition) const;
|
||||||
|
|
||||||
|
private:
|
||||||
|
const BuchiAutomaton& buchi_automaton; /* Büchi automaton
|
||||||
|
* associated with the
|
||||||
|
* product.
|
||||||
|
*/
|
||||||
|
|
||||||
|
const StateSpace& statespace; /* State space associated
|
||||||
|
* with the product.
|
||||||
|
*/
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Inline function definitions for class StateSpaceProduct.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline StateSpaceProduct::StateSpaceProduct
|
||||||
|
(const Graph<GraphEdgeContainer>& a, const Graph<GraphEdgeContainer>& s) :
|
||||||
|
buchi_automaton(static_cast<const BuchiAutomaton&>(a)),
|
||||||
|
statespace(static_cast<const StateSpace&>(s))
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Constructor for class StateSpaceProduct. Initializes a new
|
||||||
|
* object with operations for checking the emptiness of the
|
||||||
|
* product of a Büchi automaton and a state space.
|
||||||
|
*
|
||||||
|
* Arguments: a -- A constant reference to a Graph<GraphEdgeContainer>
|
||||||
|
* object, assumed to be a BuchiAutomaton.
|
||||||
|
* s -- A constant reference to a Graph<GraphEdgeContainer>
|
||||||
|
* object, assumed to be a StateSpace.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline StateSpaceProduct::~StateSpaceProduct()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Destructor for class StateSpaceProduct.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline bool StateSpaceProduct::empty() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Tells whether the product of `this->buchi_automaton' and
|
||||||
|
* `this->statespace' is (trivially) empty.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: true iff either the Büchi automaton or the state space has
|
||||||
|
* no states.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return (buchi_automaton.empty() || statespace.empty());
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline unsigned long int StateSpaceProduct::numberOfAcceptanceSets() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Tells the number of acceptance sets in the Büchi automaton
|
||||||
|
* associated with a StateSpaceProduct object.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: The number of acceptance sets in the automaton.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return buchi_automaton.numberOfAcceptanceSets();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline const BuchiAutomaton::BuchiState& StateSpaceProduct::firstComponent
|
||||||
|
(const Graph<GraphEdgeContainer>::size_type state_id) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Function for accessing states in the Büchi automaton
|
||||||
|
* associated with a StateSpaceProduct object.
|
||||||
|
*
|
||||||
|
* Argument: state_id -- Identifier of a state in the automaton.
|
||||||
|
*
|
||||||
|
* Returns: A constant reference to a state in the automaton.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return buchi_automaton[state_id];
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline const StateSpace::State& StateSpaceProduct::secondComponent
|
||||||
|
(const Graph<GraphEdgeContainer>::size_type state_id) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Function for accessing states in the state space associated
|
||||||
|
* with a StateSpaceProduct object.
|
||||||
|
*
|
||||||
|
* Argument: state_id -- Identifier of a state in the state space.
|
||||||
|
*
|
||||||
|
* Returns: A constant reference to a state in the state space.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return statespace[state_id];
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void StateSpaceProduct::mergeAcceptanceInformation
|
||||||
|
(const Graph<GraphEdgeContainer>::Node& state,
|
||||||
|
const Graph<GraphEdgeContainer>::Node&, BitArray& acceptance_sets) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Merges the acceptance sets associated with a state of a Büchi
|
||||||
|
* automaton into a collection of sets.
|
||||||
|
*
|
||||||
|
* Arguments: state -- A constant reference to a state in the
|
||||||
|
* automaton.
|
||||||
|
* acceptance_sets -- A reference to a BitArray for storing
|
||||||
|
* the result. The BitArray should have
|
||||||
|
* capacity for (at least)
|
||||||
|
* `this->buchi_automaton
|
||||||
|
* .numberOfAcceptanceSets()' bits.
|
||||||
|
* (The second argument is needed to allow the class
|
||||||
|
* StateSpaceProduct to be used for instantiating the Product
|
||||||
|
* template; see file Product.h.)
|
||||||
|
*
|
||||||
|
* Returns: Nothing. After the operation, `acceptance_sets[i] == true'
|
||||||
|
* holds if `state.acceptanceSets().test(i) == true' for all
|
||||||
|
* 0 <= i < `this->buchi_automaton.numberOfAcceptanceSets()'.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
acceptance_sets.bitwiseOr
|
||||||
|
(static_cast<const BuchiAutomaton::BuchiState&>(state).acceptanceSets(),
|
||||||
|
numberOfAcceptanceSets());
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void StateSpaceProduct::mergeAcceptanceInformation
|
||||||
|
(const Graph<GraphEdgeContainer>::Edge& buchi_transition,
|
||||||
|
const Graph<GraphEdgeContainer>::Edge&, BitArray& acceptance_sets) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Merges the acceptance sets associated with a transition of a
|
||||||
|
* Büchi automaton into a collection of sets.
|
||||||
|
*
|
||||||
|
* Arguments: transition -- A constant reference to a transition in
|
||||||
|
* the automaton.
|
||||||
|
* acceptance_sets -- A reference to a BitArray for storing
|
||||||
|
* the result. The BitArray should have
|
||||||
|
* capacity for (at least)
|
||||||
|
* `this->buchi_automaton
|
||||||
|
* .numberOfAcceptanceSets()' bits.
|
||||||
|
* (The second argument is needed to allow the class
|
||||||
|
* StateSpaceProduct to be used for instantiating the Product
|
||||||
|
* template; see file Product.h.)
|
||||||
|
*
|
||||||
|
* Returns: Nothing. After the operation, `acceptance_sets[i] == true'
|
||||||
|
* holds if `transition.acceptanceSets().test(i) == true' for
|
||||||
|
* all
|
||||||
|
* 0 <= i < `this->buchi_automaton.numberOfAcceptanceSets()'.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
acceptance_sets.bitwiseOr
|
||||||
|
(static_cast<const BuchiAutomaton::BuchiTransition&>(buchi_transition)
|
||||||
|
.acceptanceSets(),
|
||||||
|
numberOfAcceptanceSets());
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void StateSpaceProduct::validateEdgeIterators
|
||||||
|
(const Graph<GraphEdgeContainer>::Node& buchi_state,
|
||||||
|
const Graph<GraphEdgeContainer>::Node& system_state,
|
||||||
|
GraphEdgeContainer::const_iterator& buchi_transition,
|
||||||
|
GraphEdgeContainer::const_iterator& system_transition) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Checks whether a pair of transition iterators corresponds to
|
||||||
|
* a transition beginning from a state in the product of a Büchi
|
||||||
|
* automaton and a state space; if this is not the case, makes
|
||||||
|
* the iterators point to a valid transition beginning from the
|
||||||
|
* product state (or to the "end" of the collection of
|
||||||
|
* transitions beginning from the product state if no valid
|
||||||
|
* transition can be found by incrementing the iterators).
|
||||||
|
*
|
||||||
|
* Arguments: buchi_state, -- These variables determine the state
|
||||||
|
* system_state, in the product; `buchi_state' and
|
||||||
|
* `system_state' should be references to
|
||||||
|
* states in `this->buchi_automaton' and
|
||||||
|
* `this->statespace', respectively.
|
||||||
|
* buchi_transition, -- References to the transition
|
||||||
|
* system_transition iterators. It is assumed that
|
||||||
|
* `buchi_transition' and
|
||||||
|
* `system_transition' initially point to
|
||||||
|
* two transitions starting from
|
||||||
|
* `buchi_state' and `system_state',
|
||||||
|
* respectively.
|
||||||
|
*
|
||||||
|
* Returns: Nothing. Upon return, `buchi_transition' and
|
||||||
|
* `system_transition' will either equal
|
||||||
|
* `buchi_state.edges().end()' and `system_state.edges().end()',
|
||||||
|
* respectively, or they will point to a pair of transitions
|
||||||
|
* beginning from `buchi_state' and `system_state' such that
|
||||||
|
* this pair of transitions corresponds to a transition starting
|
||||||
|
* from the product state determined by `buchi_state' and
|
||||||
|
* `system_state'.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
const GraphEdgeContainer& buchi_transitions = buchi_state.edges();
|
||||||
|
const GraphEdgeContainer& system_transitions = system_state.edges();
|
||||||
|
|
||||||
|
if (buchi_transition == buchi_transitions.end())
|
||||||
|
{
|
||||||
|
system_transition = system_transitions.end();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
if (system_transition == system_transitions.end())
|
||||||
|
{
|
||||||
|
buchi_transition = buchi_transitions.end();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
while (!static_cast<const BuchiAutomaton::BuchiTransition*>
|
||||||
|
(*buchi_transition)->enabled
|
||||||
|
(static_cast<const StateSpace::State&>(system_state)
|
||||||
|
.positiveAtoms(),
|
||||||
|
statespace.numberOfPropositions()))
|
||||||
|
{
|
||||||
|
++buchi_transition;
|
||||||
|
if (buchi_transition == buchi_transitions.end())
|
||||||
|
{
|
||||||
|
system_transition = system_transitions.end();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
system_transition = system_transitions.begin();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void StateSpaceProduct::incrementEdgeIterators
|
||||||
|
(const Graph<GraphEdgeContainer>::Node& buchi_state,
|
||||||
|
const Graph<GraphEdgeContainer>::Node& system_state,
|
||||||
|
GraphEdgeContainer::const_iterator& buchi_transition,
|
||||||
|
GraphEdgeContainer::const_iterator& system_transition) const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Increments a pair of transition iterators to point to the
|
||||||
|
* "next" transition beginning from a state in the product of a
|
||||||
|
* Büchi automaton and a state space. If no "next" transition
|
||||||
|
* exists, makes the iterators point to the "end" of the
|
||||||
|
* collection of transitions beginning from the product state.
|
||||||
|
*
|
||||||
|
* Arguments: buchi_state, -- These variables determine the state
|
||||||
|
* system_state, in the product; `buchi_state' and
|
||||||
|
* `system_state' should be references to
|
||||||
|
* states in `this->buchi_automaton' and
|
||||||
|
* `this->statespace', respectively.
|
||||||
|
* buchi_transition, -- References to the transition
|
||||||
|
* system_transition iterators. It is assumed that
|
||||||
|
* `buchi_transition' and
|
||||||
|
* `system_transition' initially point to
|
||||||
|
* two transitions starting from
|
||||||
|
* `buchi_state' and `system_state',
|
||||||
|
* respectively.
|
||||||
|
*
|
||||||
|
* Returns: Nothing. Upon return, `buchi_transition' and
|
||||||
|
* `system_transition' will either equal
|
||||||
|
* `buchi_state.edges().end()' and `system_state.edges().end()',
|
||||||
|
* respectively, or they will point to a pair of transitions
|
||||||
|
* beginning from `buchi_state' and `system_state' such that
|
||||||
|
* this pair of transitions corresponds to a transition starting
|
||||||
|
* from the product state determined by `buchi_state' and
|
||||||
|
* `system_state'.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
const GraphEdgeContainer& buchi_transitions = buchi_state.edges();
|
||||||
|
const GraphEdgeContainer& system_transitions = system_state.edges();
|
||||||
|
|
||||||
|
++system_transition;
|
||||||
|
if (system_transition == system_transitions.end())
|
||||||
|
{
|
||||||
|
do
|
||||||
|
{
|
||||||
|
++buchi_transition;
|
||||||
|
if (buchi_transition == buchi_transitions.end())
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
while (!static_cast<const BuchiAutomaton::BuchiTransition*>
|
||||||
|
(*buchi_transition)->enabled
|
||||||
|
(static_cast<const StateSpace::State&>(system_state)
|
||||||
|
.positiveAtoms(),
|
||||||
|
statespace.numberOfPropositions()));
|
||||||
|
|
||||||
|
system_transition = system_transitions.begin();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* !STATESPACEPRODUCT_H */
|
||||||
125
lbtt/src/TempFsysName.cc
Normal file
125
lbtt/src/TempFsysName.cc
Normal file
|
|
@ -0,0 +1,125 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2004
|
||||||
|
* Heikki Tauriainen <Heikki.Tauriainen@hut.fi>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <config.h>
|
||||||
|
#include <cstdio>
|
||||||
|
#include <cstdlib>
|
||||||
|
#include <cstring>
|
||||||
|
#include <sys/stat.h>
|
||||||
|
#include <sys/types.h>
|
||||||
|
#ifdef HAVE_FCNTL_H
|
||||||
|
#include <fcntl.h>
|
||||||
|
#endif /* HAVE_FCNTL_H */
|
||||||
|
#include <string>
|
||||||
|
#include "Exception.h"
|
||||||
|
#include "StringUtil.h"
|
||||||
|
#include "TempFsysName.h"
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Number of generated temporary names.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
unsigned long int TempFsysName::number_of_allocated_names = 0;
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Function definitions for class TempFsysName.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
const char* TempFsysName::allocate
|
||||||
|
(const char* prefix, const NameType t, const bool literal)
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Associates a TempFsysName object with a temporary name. (As
|
||||||
|
* a side effect, the function actually creates an empty
|
||||||
|
* temporary file or a directory to reserve the name in the file
|
||||||
|
* system. The file or directory should never be removed
|
||||||
|
* explicitly; it is removed automatically when the TempFsysName
|
||||||
|
* object is destroyed or another call is made to
|
||||||
|
* `this->allocate'.)
|
||||||
|
*
|
||||||
|
* Arguments: prefix -- Pointer to a C-style string containing a prefix
|
||||||
|
* for the temporary name (empty by default). If
|
||||||
|
* `literal == true', `prefix' (if nonempty) is
|
||||||
|
* assumed to contain the full path for the
|
||||||
|
* temporary file or directory; otherwise the
|
||||||
|
* function will reserve a temporary name in the
|
||||||
|
* `P_tmpdir' directory. This name will consist
|
||||||
|
* of the value of `prefix' (if nonempty), followed
|
||||||
|
* by the current value of
|
||||||
|
* `TempFsysName::number_of_allocated_names' and
|
||||||
|
* the current process id, separated by dots.
|
||||||
|
* t -- Determines the type of the name (file or a
|
||||||
|
* directory).
|
||||||
|
* literal -- See above.
|
||||||
|
*
|
||||||
|
* Returns: A pointer to a constant C-style string containing the
|
||||||
|
* temporary name. The function throws an IOException if the
|
||||||
|
* name allocation or the file or directory creation fails.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
releaseName();
|
||||||
|
|
||||||
|
using ::StringUtil::toString;
|
||||||
|
string tempname;
|
||||||
|
|
||||||
|
try
|
||||||
|
{
|
||||||
|
if (!literal || strlen(prefix) == 0)
|
||||||
|
{
|
||||||
|
tempname = toString(P_tmpdir) + "/";
|
||||||
|
if (strlen(prefix))
|
||||||
|
tempname += string(prefix) + ".";
|
||||||
|
tempname += toString(number_of_allocated_names) + "."
|
||||||
|
+ toString(getpid());
|
||||||
|
++number_of_allocated_names;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
tempname = prefix;
|
||||||
|
|
||||||
|
name = new char[tempname.length() + 1];
|
||||||
|
strcpy(name, tempname.c_str());
|
||||||
|
}
|
||||||
|
catch (const bad_alloc&)
|
||||||
|
{
|
||||||
|
name = 0;
|
||||||
|
throw IOException
|
||||||
|
("unable to allocate a temporary name in the file system");
|
||||||
|
}
|
||||||
|
|
||||||
|
type = t;
|
||||||
|
if (t == FILE)
|
||||||
|
{
|
||||||
|
int fd = open(name, O_RDWR | O_CREAT | O_EXCL, S_IREAD | S_IWRITE);
|
||||||
|
if (fd == -1)
|
||||||
|
throw IOException("unable to create a temporary file");
|
||||||
|
close(fd);
|
||||||
|
}
|
||||||
|
else if (mkdir(name, S_IRWXU) == -1)
|
||||||
|
throw IOException("unable to create a temporary directory");
|
||||||
|
|
||||||
|
return name;
|
||||||
|
}
|
||||||
157
lbtt/src/TempFsysName.h
Normal file
157
lbtt/src/TempFsysName.h
Normal file
|
|
@ -0,0 +1,157 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2004
|
||||||
|
* Heikki Tauriainen <Heikki.Tauriainen@hut.fi>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef TEMPFSYSNAME_H
|
||||||
|
#define TEMPFSYSNAME_H
|
||||||
|
|
||||||
|
#include <config.h>
|
||||||
|
#include <cstdio>
|
||||||
|
#ifdef HAVE_UNISTD_H
|
||||||
|
#include <unistd.h>
|
||||||
|
#endif /* HAVE_UNISTD_H */
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* A class for temporary file system names.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
class TempFsysName
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
TempFsysName(); /* Constructor. */
|
||||||
|
|
||||||
|
~TempFsysName(); /* Destructor. */
|
||||||
|
|
||||||
|
enum NameType { FILE, DIRECTORY }; /* Types of temporary
|
||||||
|
* file system names.
|
||||||
|
*/
|
||||||
|
|
||||||
|
const char* allocate /* Allocates a name */
|
||||||
|
(const char* prefix = "", /* in the file system. */
|
||||||
|
const NameType t = FILE,
|
||||||
|
const bool literal = false);
|
||||||
|
|
||||||
|
const char* get() const; /* Tells the name. */
|
||||||
|
|
||||||
|
private:
|
||||||
|
TempFsysName(const TempFsysName&); /* Prevent copying and */
|
||||||
|
TempFsysName& operator=(const TempFsysName&); /* assignment of
|
||||||
|
* TempFsysName objects.
|
||||||
|
*/
|
||||||
|
|
||||||
|
void releaseName(); /* Frees a name in the file
|
||||||
|
* system.
|
||||||
|
*/
|
||||||
|
|
||||||
|
char* name; /* Temporary name. */
|
||||||
|
|
||||||
|
NameType type; /* Tells whether the name
|
||||||
|
* refers to a file or a
|
||||||
|
* directory.
|
||||||
|
*/
|
||||||
|
|
||||||
|
static unsigned long int /* Counter for the */
|
||||||
|
number_of_allocated_names; /* number of generated
|
||||||
|
* temporary names.
|
||||||
|
*/
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*
|
||||||
|
* Inline function definitions for class TempFsysName.
|
||||||
|
*
|
||||||
|
*****************************************************************************/
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline TempFsysName::TempFsysName() : name(static_cast<char*>(0))
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Constructor for class TempFsysName.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline TempFsysName::~TempFsysName()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Destructor for class TempFsysName.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
releaseName();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline const char* TempFsysName::get() const
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Tells the name associated with the TempFsysName object.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: A pointer to a constant C-style string containing the name
|
||||||
|
* associated with the TempFsysName object. If the TempFsysName
|
||||||
|
* object has not yet been (successfully) associated with a file
|
||||||
|
* using TempFsysName::allocate, this pointer has the value 0.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
return name;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ========================================================================= */
|
||||||
|
inline void TempFsysName::releaseName()
|
||||||
|
/* ----------------------------------------------------------------------------
|
||||||
|
*
|
||||||
|
* Description: Deallocates the memory reserved for `this->name' and frees
|
||||||
|
* the name also in the file system by removing the file or
|
||||||
|
* directory associated with the object. If the name
|
||||||
|
* is associated with a directory, the directory is assumed to
|
||||||
|
* be empty.
|
||||||
|
*
|
||||||
|
* Arguments: None.
|
||||||
|
*
|
||||||
|
* Returns: Nothing.
|
||||||
|
*
|
||||||
|
* ------------------------------------------------------------------------- */
|
||||||
|
{
|
||||||
|
if (name == static_cast<char*>(0))
|
||||||
|
return;
|
||||||
|
if (type == FILE)
|
||||||
|
remove(name);
|
||||||
|
else
|
||||||
|
rmdir(name);
|
||||||
|
delete[] name;
|
||||||
|
name = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* !TEMPFSYSNAME_H */
|
||||||
Loading…
Add table
Add a link
Reference in a new issue