[antlr-interest] TR : Question (or bug alert) : what's the character to append to the end of a string stream ?

[Anthony Brenelière]

I have the following main function i my program :

CMainApp::CMainApp(char * szCmdLine)
{
	strstream clinebuf;

	clinebuf << szCmdLine << "\377" << ends;
	/*
		i also tried:
	clinebuf << szCmdLine << "\377";
		or
	clinebuf << szCmdLine << "\377\0";
	*/

	cmdLineLexer lexer(clinebuf);  // <- i insert a string stream as
parameter for the lexer
	// TokenBuffer buffer(lexer);
	cmdLineParser parser(lexer);

	parser.parameter_list();

	cin.get();
}

But the lexer throws an an exception because there is no EOF character
at the end of the stream.

When i append an EOF character at the end of the string (lie the
exemple) stream then it does not even work.

My question is: is there something else i should append to my stream to
make my  lexer working ?

If, in the grammar-generated function cmdLineLexer::nextToken(), i
manually replace..

if (LA(1)==EOF_CHAR)
{
	uponEOF();
	_returnToken =
makeToken(ANTLR_USE_NAMESPACE(antlr)Token::EOF_TYPE);
}

..by..

char _c_ = LA(1);
if (_c_==EOF_CHAR)
{
	uponEOF();
	_returnToken =
makeToken(ANTLR_USE_NAMESPACE(antlr)Token::EOF_TYPE);
}

..then it works !!

So is that could be a bug ?


 

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