kakoune/src/buffer.hh

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2011-09-02 18:51:20 +02:00
#ifndef buffer_hh_INCLUDED
#define buffer_hh_INCLUDED
#include <string>
#include <vector>
namespace Kakoune
{
class Buffer;
typedef int BufferPos;
typedef int BufferSize;
typedef char BufferChar;
typedef std::basic_string<BufferChar> BufferString;
struct LineAndColumn
{
BufferPos line;
BufferPos column;
LineAndColumn(BufferPos line = 0, BufferPos column = 0)
: line(line), column(column) {}
};
class BufferIterator
{
public:
typedef BufferChar value_type;
typedef BufferSize difference_type;
typedef const value_type* pointer;
typedef const value_type& reference;
typedef std::bidirectional_iterator_tag iterator_category;
BufferIterator() : m_buffer(NULL), m_position(0) {}
BufferIterator(const Buffer& buffer, BufferPos position);
BufferIterator& operator=(const BufferIterator& iterator);
bool operator== (const BufferIterator& iterator) const;
bool operator!= (const BufferIterator& iterator) const;
bool operator< (const BufferIterator& iterator) const;
bool operator<= (const BufferIterator& iterator) const;
BufferChar operator* () const;
BufferSize operator- (const BufferIterator& iterator) const;
BufferIterator operator+ (BufferSize size) const;
BufferIterator operator- (BufferSize size) const;
BufferIterator& operator+= (BufferSize size);
BufferIterator& operator-= (BufferSize size);
BufferIterator& operator++ ();
BufferIterator& operator-- ();
bool is_begin() const;
bool is_end() const;
private:
const Buffer* m_buffer;
BufferPos m_position;
friend class Buffer;
};
class Buffer
{
public:
Buffer(const std::string& name);
void erase(const BufferIterator& begin,
const BufferIterator& end);
void insert(const BufferIterator& position,
const BufferString& string);
BufferString string(const BufferIterator& begin,
const BufferIterator& end) const;
BufferIterator begin() const;
BufferIterator end() const;
BufferSize length() const;
BufferIterator iterator_at(const LineAndColumn& line_and_column) const;
LineAndColumn line_and_column_at(const BufferIterator& iterator) const;
LineAndColumn clamp(const LineAndColumn& line_and_column) const;
const std::string& name() const { return m_name; }
const BufferString& content() const { return m_content; }
private:
BufferChar at(BufferPos position) const;
friend class BufferIterator;
std::vector<BufferPos> m_lines;
void compute_lines();
BufferPos line_at(const BufferIterator& iterator) const;
BufferSize line_length(BufferPos line) const;
BufferString m_content;
std::string m_name;
};
}
#endif // buffer_hh_INCLUDED