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Alexandre Duret-Lutz
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452
lbtt/src/FormulaWriter.h
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452
lbtt/src/FormulaWriter.h
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/*
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* Copyright (C) 1999, 2000, 2001, 2002
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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 FORMULAWRITER_H
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#define FORMULAWRITER_H
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#include "Exception.h"
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namespace Ltl
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{
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class LtlFormula;
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class Atom;
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/******************************************************************************
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*
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* A function template class for writing the formula to a stream.
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*
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*****************************************************************************/
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template<class TrueWriter, class FalseWriter, class AtomWriter,
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class NotWriter, class NextWriter, class FinallyWriter,
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class GloballyWriter, class AndWriter, class OrWriter,
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class ImplyWriter, class EquivWriter, class XorWriter,
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class UntilWriter, class ReleaseWriter, class WeakUntilWriter,
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class StrongReleaseWriter, class BeforeWriter>
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class FormulaWriter
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{
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public:
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FormulaWriter(Exceptional_ostream& stream); /* Constructor. */
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~FormulaWriter(); /* Destructor. */
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void operator() /* Implements the write */
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(const LtlFormula* f, int operand); /* operation. */
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private:
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Exceptional_ostream& estream; /* Output stream. */
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FormulaWriter(const FormulaWriter&); /* Prevent copying and */
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FormulaWriter& operator=(const FormulaWriter&); /* assignment of
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* FormulaWriter
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* objects.
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*/
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};
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/******************************************************************************
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*
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* Class for printing atomic propositions.
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*
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*****************************************************************************/
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class AtomWriter
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{
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public:
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static void write /* Implements the write */
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(Exceptional_ostream& estream, /* operation. */
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long int atom_id);
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};
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/******************************************************************************
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*
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* Template class for printing Boolean constants.
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*
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*****************************************************************************/
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template<const char* symbol>
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class ConstantWriter
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{
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public:
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static void write(Exceptional_ostream& estream); /* Implements the write */
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}; /* operation. */
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/******************************************************************************
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*
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* Template class for printing unary operators.
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*
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*****************************************************************************/
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template<const char* symbol>
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class UnaryOperatorWriter
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{
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public:
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static void write /* Implements the write */
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(Exceptional_ostream& estream, int operand); /* operation. */
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};
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/******************************************************************************
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*
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* Template class for printing binary operators in prefix notation.
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*
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*****************************************************************************/
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template<const char* symbol>
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class BinaryOperatorPrefixWriter
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{
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public:
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static void write /* Implements the write */
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(Exceptional_ostream& estream, int operand); /* operation. */
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};
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/******************************************************************************
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*
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* Template class for printing binary operators in infix notation.
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*
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*****************************************************************************/
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template<const char* symbol>
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class BinaryOperatorInfixWriter
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{
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public:
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static void write /* Implements the write */
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(Exceptional_ostream& estream, int operand); /* operation. */
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};
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/******************************************************************************
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*
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* Inline function definitions for template class FormulaWriter.
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*
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*****************************************************************************/
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/* ========================================================================= */
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template<class TrueWriter, class FalseWriter, class AtomWriter,
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class NotWriter, class NextWriter, class FinallyWriter,
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class GloballyWriter, class AndWriter, class OrWriter,
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class ImplyWriter, class EquivWriter, class XorWriter,
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class UntilWriter, class ReleaseWriter, class WeakUntilWriter,
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class StrongReleaseWriter, class BeforeWriter>
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inline FormulaWriter<TrueWriter, FalseWriter, AtomWriter, NotWriter,
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NextWriter, FinallyWriter, GloballyWriter, AndWriter,
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OrWriter, ImplyWriter, EquivWriter, XorWriter,
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UntilWriter, ReleaseWriter, WeakUntilWriter,
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StrongReleaseWriter, BeforeWriter>::
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FormulaWriter(Exceptional_ostream& stream) :
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estream(stream)
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/* ----------------------------------------------------------------------------
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*
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* Description: Constructor for class FormulaWriter.
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*
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* Arguments: stream -- A reference to an exception-aware output
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* stream.
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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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template<class TrueWriter, class FalseWriter, class AtomWriter,
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class NotWriter, class NextWriter, class FinallyWriter,
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class GloballyWriter, class AndWriter, class OrWriter,
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class ImplyWriter, class EquivWriter, class XorWriter,
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class UntilWriter, class ReleaseWriter, class WeakUntilWriter,
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class StrongReleaseWriter, class BeforeWriter>
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inline FormulaWriter<TrueWriter, FalseWriter, AtomWriter, NotWriter,
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NextWriter, FinallyWriter, GloballyWriter, AndWriter,
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OrWriter, ImplyWriter, EquivWriter, XorWriter,
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UntilWriter, ReleaseWriter, WeakUntilWriter,
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StrongReleaseWriter, BeforeWriter>::
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~FormulaWriter()
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/* ----------------------------------------------------------------------------
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*
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* Description: Destructor for class FormulaWriter.
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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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*
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* Inline function definitions for class AtomWriter.
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*
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*****************************************************************************/
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/* ========================================================================= */
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inline void AtomWriter::write
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(Exceptional_ostream& estream, long int atom_id)
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/* ----------------------------------------------------------------------------
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*
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* Description: Writes an atomic proposition into a stream.
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*
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* Arguments: estream -- A reference to an exception-aware output stream.
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* atom_id -- Numeric identifier of the proposition.
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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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estream << 'p' << atom_id;
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}
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/******************************************************************************
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*
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* Inline function definitions for template class ConstantWriter.
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*
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*****************************************************************************/
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/* ========================================================================= */
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template<const char* symbol>
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inline void ConstantWriter<symbol>::write(Exceptional_ostream& estream)
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/* ----------------------------------------------------------------------------
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*
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* Description: Writes a Boolean constant into a stream.
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*
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* Arguments: estream -- A reference to an exception-aware output stream.
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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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estream << symbol;
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}
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/******************************************************************************
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*
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* Inline function definitions for template class UnaryOperatorWriter.
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*
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*****************************************************************************/
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/* ========================================================================= */
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template<const char* symbol>
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inline void UnaryOperatorWriter<symbol>::write
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(Exceptional_ostream& estream, int operand)
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/* ----------------------------------------------------------------------------
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*
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* Description: Writes an unary operator symbol into a stream.
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*
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* Arguments: estream -- A reference to an exception-aware output stream.
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* operand -- Identifies the state of the depth-first search
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* that manages the writing. The operator will be
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* written to the stream if and only if `operand'
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* has the value 0.
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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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if (operand == 0)
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estream << symbol << ' ';
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}
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/******************************************************************************
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*
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* Inline function definitions for template class BinaryOperatorPrefixWriter.
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*
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*****************************************************************************/
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/* ========================================================================= */
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template<const char* symbol>
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inline void BinaryOperatorPrefixWriter<symbol>::write
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(Exceptional_ostream& estream, int operand)
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/* ----------------------------------------------------------------------------
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*
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* Description: Writes a binary operator symbol into a stream.
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*
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* Arguments: estream -- A reference to an exception-aware output stream.
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* operand -- Identifies the state of the depth-first search
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* that manages thel writing. This value is used to
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* decide what to write to the stream.
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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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if (operand == 0)
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estream << symbol << ' ';
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else if (operand == 1)
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estream << ' ';
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}
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/******************************************************************************
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*
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* Inline function definitions for template class BinaryOperatorInfixWriter.
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*
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*****************************************************************************/
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/* ========================================================================= */
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template<const char* symbol>
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inline void BinaryOperatorInfixWriter<symbol>::write
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(Exceptional_ostream& estream, int operand)
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/* ----------------------------------------------------------------------------
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*
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* Description: Writes a binary operator symbol into a stream.
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*
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* Arguments: estream -- A reference to an exception-aware output stream.
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* operand -- Identifies the state of the depth-first search
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* that manages the writing. This value is
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* used to decide what to write to the stream.
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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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if (operand == 0)
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estream << '(';
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else if (operand == 1)
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estream << ' ' << symbol << ' ';
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else
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estream << ')';
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}
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/******************************************************************************
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*
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* Function definitions for template class FormulaWriter.
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*
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*****************************************************************************/
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/* ========================================================================= */
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template<class TrueWriter, class FalseWriter, class AtomWriter,
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class NotWriter, class NextWriter, class FinallyWriter,
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class GloballyWriter, class AndWriter, class OrWriter,
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class ImplyWriter, class EquivWriter, class XorWriter,
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class UntilWriter, class ReleaseWriter, class WeakUntilWriter,
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class StrongReleaseWriter, class BeforeWriter>
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void FormulaWriter<TrueWriter, FalseWriter, AtomWriter, NotWriter, NextWriter,
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FinallyWriter, GloballyWriter, AndWriter, OrWriter,
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ImplyWriter, EquivWriter, XorWriter, UntilWriter,
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ReleaseWriter, WeakUntilWriter, StrongReleaseWriter,
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BeforeWriter>::
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operator()(const LtlFormula* f, int operand)
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/* ----------------------------------------------------------------------------
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*
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* Description: Implements the formula writing operation.
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*
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* Arguments: f -- A pointer to a constant LtlFormula.
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* operand -- Used for checking when to write certain `extra'
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* symbols (parentheses or spaces) to the stream.
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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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switch (f->what())
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{
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case LTL_ATOM :
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AtomWriter::write(estream, static_cast<const Atom*>(f)->getId());
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break;
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case LTL_TRUE :
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TrueWriter::write(estream);
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break;
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case LTL_FALSE :
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FalseWriter::write(estream);
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break;
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case LTL_NEGATION :
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NotWriter::write(estream, operand);
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break;
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case LTL_NEXT :
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NextWriter::write(estream, operand);
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break;
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case LTL_FINALLY :
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FinallyWriter::write(estream, operand);
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break;
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case LTL_GLOBALLY :
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GloballyWriter::write(estream, operand);
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break;
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case LTL_CONJUNCTION :
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AndWriter::write(estream, operand);
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break;
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case LTL_DISJUNCTION :
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OrWriter::write(estream, operand);
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break;
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case LTL_IMPLICATION :
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ImplyWriter::write(estream, operand);
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break;
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case LTL_EQUIVALENCE :
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EquivWriter::write(estream, operand);
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break;
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case LTL_XOR :
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XorWriter::write(estream, operand);
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break;
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case LTL_UNTIL :
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UntilWriter::write(estream, operand);
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break;
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case LTL_V :
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ReleaseWriter::write(estream, operand);
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break;
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case LTL_WEAK_UNTIL :
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WeakUntilWriter::write(estream, operand);
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break;
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case LTL_STRONG_RELEASE :
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StrongReleaseWriter::write(estream, operand);
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break;
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default : /* LTL_BEFORE */
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BeforeWriter::write(estream, operand);
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break;
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}
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}
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}
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#endif /* !FORMULAWRITER_H */
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