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#ifndef INC_CharBuffer_hpp__
#define INC_CharBuffer_hpp__
/* ANTLR Translator Generator
* Project led by Terence Parr at http://www.jGuru.com
* Software rights: http://www.antlr.org/license.html
*
* $Id$
*/
#include <antlr/config.hpp>
#include <istream>
#include <antlr/InputBuffer.hpp>
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif
/**A Stream of characters fed to the lexer from a InputStream that can
* be rewound via mark()/rewind() methods.
* <p>
* A dynamic array is used to buffer up all the input characters. Normally,
* "k" characters are stored in the buffer. More characters may be stored
* during guess mode (testing syntactic predicate), or when LT(i>k) is
* referenced.
* Consumption of characters is deferred. In other words, reading the next
* character is not done by consume(), but deferred until needed by LA or LT.
* <p>
*
* @see antlr.CharQueue
*/
class ANTLR_API CharBuffer : public InputBuffer {
public:
/// Create a character buffer
CharBuffer( ANTLR_USE_NAMESPACE(std)istream& input );
/// Get the next character from the stream
int getChar();
protected:
// character source
ANTLR_USE_NAMESPACE(std)istream& input;
private:
// NOTE: Unimplemented
CharBuffer(const CharBuffer& other);
CharBuffer& operator=(const CharBuffer& other);
};
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif
#endif //INC_CharBuffer_hpp__
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