1 |
tim |
770 |
/* ANTLR Translator Generator |
2 |
|
|
* Project led by Terence Parr at http://www.jGuru.com |
3 |
|
|
* Software rights: http://www.antlr.org/license.html |
4 |
|
|
* |
5 |
|
|
* $Id: CharBuffer.cpp,v 1.1 2005-12-02 15:38:02 tim Exp $ |
6 |
|
|
*/ |
7 |
|
|
|
8 |
|
|
#include "antlr/CharBuffer.hpp" |
9 |
|
|
#include <iostream> |
10 |
|
|
|
11 |
|
|
//#include <ios> |
12 |
|
|
|
13 |
|
|
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
14 |
|
|
namespace antlr { |
15 |
|
|
#endif |
16 |
|
|
|
17 |
|
|
/* RK: Per default istream does not throw exceptions. This can be |
18 |
|
|
* enabled with: |
19 |
|
|
* stream.exceptions(ios_base::badbit|ios_base::failbit|ios_base::eofbit); |
20 |
|
|
* |
21 |
|
|
* We could try catching the bad/fail stuff. But handling eof via this is |
22 |
|
|
* not a good idea. EOF is best handled as a 'normal' character. |
23 |
|
|
* |
24 |
|
|
* So this does not work yet with gcc... Comment it until I get to a platform |
25 |
|
|
* that does.. |
26 |
|
|
*/ |
27 |
|
|
|
28 |
|
|
/** Create a character buffer. Enable fail and bad exceptions, if supported |
29 |
|
|
* by platform. */ |
30 |
|
|
CharBuffer::CharBuffer(ANTLR_USE_NAMESPACE(std)istream& input_) |
31 |
|
|
: input(input_) |
32 |
|
|
{ |
33 |
|
|
// input.exceptions(ANTLR_USE_NAMESPACE(std)ios_base::badbit| |
34 |
|
|
// ANTLR_USE_NAMESPACE(std)ios_base::failbit); |
35 |
|
|
} |
36 |
|
|
|
37 |
|
|
/** Get the next character from the stream. May throw CharStreamIOException |
38 |
|
|
* when something bad happens (not EOF) (if supported by platform). |
39 |
|
|
*/ |
40 |
|
|
int CharBuffer::getChar() |
41 |
|
|
{ |
42 |
|
|
// try { |
43 |
|
|
return input.get(); |
44 |
|
|
// } |
45 |
|
|
// catch (ANTLR_USE_NAMESPACE(std)ios_base::failure& e) { |
46 |
|
|
// throw CharStreamIOException(e); |
47 |
|
|
// } |
48 |
|
|
} |
49 |
|
|
|
50 |
|
|
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
51 |
|
|
} |
52 |
|
|
#endif |