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/*
* Copyright 2001-2012 Adrian Thurston <thurston@complang.org>
*/
/* This file is part of Colm.
*
* Colm 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.
*
* Colm 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 Colm; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _KEYOPS_H
#define _KEYOPS_H
#include <fstream>
#include <climits>
enum MarkType
{
MarkNone = 0,
MarkMark
};
typedef unsigned long long Size;
struct Key
{
private:
long key;
public:
friend inline Key operator+(const Key key1, const Key key2);
friend inline Key operator-(const Key key1, const Key key2);
friend inline bool operator<( const Key key1, const Key key2 );
friend inline bool operator<=( const Key key1, const Key key2 );
friend inline bool operator>( const Key key1, const Key key2 );
friend inline bool operator>=( const Key key1, const Key key2 );
friend inline bool operator==( const Key key1, const Key key2 );
friend inline bool operator!=( const Key key1, const Key key2 );
friend struct KeyOps;
Key( ) {}
Key( const Key &key ) : key(key.key) {}
Key( long key ) : key(key) {}
/* Returns the value used to represent the key. This value must be
* interpreted based on signedness. */
long getVal() const { return key; };
/* Returns the key casted to a long long. This form of the key does not
* require and signedness interpretation. */
long long getLongLong() const;
bool isUpper() const { return ( 'A' <= key && key <= 'Z' ); }
bool isLower() const { return ( 'a' <= key && key <= 'z' ); }
bool isPrintable() const { return ( 32 <= key && key < 127 ); }
Key toUpper() const
{ return Key( 'A' + ( key - 'a' ) ); }
Key toLower() const
{ return Key( 'a' + ( key - 'A' ) ); }
void operator+=( const Key other )
{ key += other.key; }
void operator-=( const Key other )
{ key -= other.key; }
void operator|=( const Key other )
{ key |= other.key; }
/* Decrement. Needed only for ranges. */
inline void decrement();
inline void increment();
};
struct HostType
{
const char *data1;
const char *data2;
long long minVal;
long long maxVal;
unsigned int size;
};
struct HostLang
{
HostType *hostTypes;
int numHostTypes;
HostType *defaultAlphType;
bool explicitUnsigned;
};
extern HostLang *hostLang;
extern HostLang hostLangC;
/* An abstraction of the key operators that manages key operations such as
* comparison and increment according the signedness of the key. */
struct KeyOps
{
/* Default to signed alphabet. */
KeyOps() : alphType(0) {}
Key minKey, maxKey;
HostType *alphType;
void setAlphType( HostType *alphType )
{
this->alphType = alphType;
minKey = (long) alphType->minVal;
maxKey = (long) alphType->maxVal;
}
/* Compute the distance between two keys. */
Size span( Key key1, Key key2 )
{
return (unsigned long long)( (long long)key2.key - (long long)key1.key + 1) ;
}
Size alphSize()
{ return span( minKey, maxKey ); }
};
inline bool operator<( const Key key1, const Key key2 )
{
return key1.key < key2.key;
}
inline bool operator<=( const Key key1, const Key key2 )
{
return key1.key <= key2.key;
}
inline bool operator>( const Key key1, const Key key2 )
{
return key1.key > key2.key;
}
inline bool operator>=( const Key key1, const Key key2 )
{
return key1.key >= key2.key;
}
inline bool operator==( const Key key1, const Key key2 )
{
return key1.key == key2.key;
}
inline bool operator!=( const Key key1, const Key key2 )
{
return key1.key != key2.key;
}
/* Decrement. Needed only for ranges. */
inline void Key::decrement()
{
key = key - 1;
}
/* Increment. Needed only for ranges. */
inline void Key::increment()
{
key = key + 1;
}
inline long long Key::getLongLong() const
{
return (long long) key;
}
inline Key operator+(const Key key1, const Key key2)
{
return Key( key1.key + key2.key );
}
inline Key operator-(const Key key1, const Key key2)
{
return Key( key1.key - key2.key );
}
const char *findFileExtension( const char *stemFile );
char *fileNameFromStem( const char *stemFile, const char *suffix );
#endif /* _KEYOPS_H */
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