mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-29 17:17:42 +01:00
54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
// FILE: BufFileInput.h
|
|
// AUTHOR: Alexey Demakov (AVD) demakov@kazbek.ispras.ru
|
|
// CREATION: 26-JAN-1998
|
|
// DESCRIPTION: File Input Stream with lookahead for Scanner
|
|
// Tested under Win32 with ANTLR 1.33 MR10 and MSVC 5.0
|
|
|
|
// Change History:
|
|
//
|
|
// 28-May-1998 Add virtual destructor to release buffer
|
|
// Manfred Kogler (km@cast.uni-linz.ac.at)
|
|
// (1.33MR14)
|
|
|
|
#ifndef BufFileInput_h
|
|
#define BufFileInput_h
|
|
|
|
#include "pcctscfg.h"
|
|
|
|
#include "pccts_stdio.h"
|
|
|
|
PCCTS_NAMESPACE_STD
|
|
|
|
#include "DLexerBase.h"
|
|
|
|
class DllExportPCCTS BufFileInput : public DLGInputStream
|
|
{
|
|
public:
|
|
// constructor
|
|
// f - input stream
|
|
// buf_size - size of buffer (maximal length for string in is_in)
|
|
|
|
BufFileInput(FILE *f, int buf_size = 8 );
|
|
|
|
virtual ~BufFileInput();
|
|
|
|
// gets next char from stream
|
|
|
|
virtual int nextChar( void );
|
|
|
|
// looks in stream and compares next l characters with s
|
|
// returns the result of comparision
|
|
|
|
int lookahead( char* s );
|
|
|
|
private:
|
|
FILE *input; // input stream;
|
|
int* buf; // buffer
|
|
int size; // size of buffer
|
|
int start; // position of the first symbol in buffer
|
|
int len; // count of characters in buffers
|
|
};
|
|
|
|
#endif
|
|
// end of file BufFileInput.h
|