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Subject: [boost] [spirit] [lex] semantic actions to handle and manipulate eoi
From: Andreas Pokorny (andreas.pokorny_at_[hidden])
Date: 2013-05-12 07:48:36


I want to replace a flex lexer with boost.spirit.lex. We implemented an
include-like functionality inside the lexer semantic actions:

include { BEGIN(incl) }
<EOF> { leaveCurrentFile(); popScannerState(); }
<incl> {
".+" { openNewFile(); pushScannerState(); BEGIN(INITIAL); }

Is there a way to do that in lexertl?
I thought about extending the spirit file_iterator but found that unwieldy.
So I now consider adding a semantic actions that are allowed to change
lex::_eoi and the ability to have a eoi token or just a semantic action to
handle eoi.

Is that a reasonable way of implementing that?


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