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// Enumerated type class -*- c++ -*-
#ifndef ENUMTYPE_H_
# define ENUMTYPE_H_
# ifdef __GNUC__
# pragma interface
# endif // __GNUC__
# include <map>
# include "Type.h"
/** @file EnumType.h
* Enumerated data type
*/
/* Copyright 1998-2001 Marko Mkel (msmakela@tcs.hut.fi).
This file is part of MARIA, a reachability analyzer and model checker
for high-level Petri nets.
MARIA 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, or (at your option)
any later version.
MARIA 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.
The GNU General Public License is often shipped with GNU software, and
is generally kept in a file called COPYING or LICENSE. If you do not
have a copy of the license, write to the Free Software Foundation,
59 Temple Place, Suite 330, Boston, MA 02111 USA. */
/** Enumerated type */
class EnumType : public Type
{
public:
/** Constructor */
EnumType ();
/** Copy constructor */
EnumType (const class EnumType& old);
private:
/** Assignment operator */
class EnumType& operator= (const class EnumType& old);
public:
/** Destructor */
~EnumType ();
/** Copy the Type */
class Type* copy () const { return new class EnumType (*this); }
/** Add an enumeration symbol
* @param name name of the symbol
* @param value numeric value of the symbol
*/
void addEnumeration (char* name, card_t value);
/** Add an enumeration symbol
* @param name name of the symbol
*/
void addEnumeration (char* name) { addEnumeration (name, myNextValue); }
/** Get the value of an enumeration symbol
* @param name name of the symbol
* @return pointer to the value, or NULL if not found
*/
const card_t* getValue (const char* name) const;
/** Get the first enumeration value */
card_t getFirstEnum () const;
/** Get the last enumeration value */
card_t getLastEnum () const;
/** Determine whether the given value exists in the enumeration
* @param value the enumeration value
* @return true if the value exists in the enumeration
*/
bool hasValue (card_t value) const;
/** Get the name of an enumeration constant
* @param value numeric value of the constant
* @return the name, or NULL if not found
*/
const char* getEnumName (card_t value) const;
/** Determine the kind of the type */
enum Kind getKind () const { return tEnum; }
/** Get the first value of this type */
class Value& getFirstValue () const;
/** Get the last value of this type */
class Value& getLastValue () const;
/** See if the type is assignable to another type
* @param type the type this type should be assignable to
* @return true if this type is assignable to the type
*/
bool isAssignable (const class Type& type) const { return &type == this; }
/** Determine whether a value is compatible with the constraints of this type
* @param value value to check
* @return true if the value passes the constraint check
*/
bool isConstrained (const class Value& value) const;
/** Get the number of possible values for this type */
card_t do_getNumValues () const;
/** Convert a value of this type to a number
* @param value value to be converted
* @return number between 0 and getNumValues () - 1
*/
card_t convert (const class Value& value) const;
/** Convert a number to a value of this type
* @param number number between 0 and getNumValues () - 1
* @return the corresponding value
*/
class Value* convert (card_t number) const;
# ifdef EXPR_COMPILE
/** Generate a C type declaration
* @param out output stream for the declarations
* @param indent indentation level
*/
void compileDefinition (class StringBuffer& out,
unsigned indent) const;
/** Emit code for converting an unconstrained value to a number
* @param out output stream
* @param indent indentation level
* @param value value to be converted
* @param number number to be computed
* @param add flag: add to number instead of assigning
*/
void do_compileConversion (class StringBuffer& out,
unsigned indent,
const char* value,
const char* number,
bool add) const;
# endif // EXPR_COMPILE
/** Display the type definition
* @param printer the printer object
*/
void display (const class Printer& printer) const;
private:
/** Map of enumeration symbol names to enumeration symbol values */
typedef std::map<char*,card_t,struct ltstr> EnumMap;
/** Enumeration symbols */
EnumMap myEnums;
typedef std::map<card_t,const char*> ReverseMap;
/** Reverse map from constants to symbols */
ReverseMap myReverseMap;
/** Default value for next enumeration symbol that is declared */
card_t myNextValue;
};
#endif // ENUMTYPE_H_
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