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Move the handling of ALLCHARS (-k'*') into the Positions class.

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This commit is contained in:
Bruno Haible
2003-04-07 09:50:11 +00:00
parent ec3d1127fa
commit 2535f34494
14 changed files with 398 additions and 241 deletions
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44
src/positions.h
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@@ -57,10 +57,12 @@ public:
Positions& operator= (const Positions& src);
/* Accessors. */
bool is_useall () const;
int operator[] (unsigned int index) const;
unsigned int get_size () const;
/* Write access. */
void set_useall (bool useall);
int * pointer ();
void set_size (unsigned int size);
@@ -68,6 +70,17 @@ public:
Returns true if there are no duplicates, false otherwise. */
bool sort ();
/* Creates an iterator, returning the positions in descending order. */
PositionIterator iterator () const;
/* Creates an iterator, returning the positions in descending order,
that apply to strings of length <= maxlen. */
PositionIterator iterator (int maxlen) const;
/* Creates an iterator, returning the positions in ascending order. */
PositionReverseIterator reviterator () const;
/* Creates an iterator, returning the positions in ascending order,
that apply to strings of length <= maxlen. */
PositionReverseIterator reviterator (int maxlen) const;
/* Set operations. Assumes the array is in reverse order. */
bool contains (int pos) const;
void add (int pos);
@@ -77,6 +90,8 @@ public:
void print () const;
private:
/* The special case denoted by '*'. */
bool _useall;
/* Number of positions. */
unsigned int _size;
/* Array of positions. 0 for the first char, 1 for the second char etc.,
@@ -88,9 +103,10 @@ private:
class PositionIterator
{
friend class Positions;
public:
/* Initializes an iterator through POSITIONS. */
PositionIterator (Positions const& positions);
/* Copy constructor. */
PositionIterator (const PositionIterator& src);
/* End of iteration marker. */
enum { EOS = -2 };
@@ -98,7 +114,16 @@ public:
/* Retrieves the next position, or EOS past the end. */
int next ();
/* Returns the number of remaining positions, i.e. how often next() will
return a value != EOS. */
unsigned int remaining () const;
private:
/* Initializes an iterator through POSITIONS. */
PositionIterator (Positions const& positions);
/* Initializes an iterator through POSITIONS, ignoring positions >= maxlen. */
PositionIterator (Positions const& positions, int maxlen);
const Positions& _set;
unsigned int _index;
};
@@ -108,9 +133,10 @@ private:
class PositionReverseIterator
{
friend class Positions;
public:
/* Initializes an iterator through POSITIONS. */
PositionReverseIterator (Positions const& positions);
/* Copy constructor. */
PositionReverseIterator (const PositionReverseIterator& src);
/* End of iteration marker. */
enum { EOS = -2 };
@@ -118,9 +144,19 @@ public:
/* Retrieves the next position, or EOS past the end. */
int next ();
/* Returns the number of remaining positions, i.e. how often next() will
return a value != EOS. */
unsigned int remaining () const;
private:
/* Initializes an iterator through POSITIONS. */
PositionReverseIterator (Positions const& positions);
/* Initializes an iterator through POSITIONS, ignoring positions >= maxlen. */
PositionReverseIterator (Positions const& positions, int maxlen);
const Positions& _set;
unsigned int _index;
unsigned int _minindex;
};
#ifdef __OPTIMIZE__