You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.3 KiB
57 lines
1.3 KiB
#ifndef INC_CharBuffer_h__
|
|
#define INC_CharBuffer_h__
|
|
|
|
/* 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.h>
|
|
|
|
#include <istream>
|
|
|
|
#include <antlr/InputBuffer.h>
|
|
|
|
#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_h__
|