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- Subject: Re: Lua incremental parser
- From: KHMan <keinhong@...>
- Date: Sat, 25 Jul 2009 00:29:25 +0800
V S P wrote:
(http://metalua.luaforge.net/) would error out when given incorrect Lua
syntax, may be modifying/relaxing its internals is
the right approach for you (perhaps creating another 'token' type
indicating possibly incorrect syntax )
I have thought about doing this for SciTE once upon a time, by
modifying code from Yueliang.
You will need to get the parser, flatten all the parts, use state
variables and a state stack instead. Something like that. We need
to be able to snapshot the parser state plus the lexer state
properly, say, at each start-of-line. Then, if the editor request
to refresh line 42 onwards, we can do a table lookup, copy over
the state information, then resume the parser. I guess it will run
at most 100-200KB/sec, but that's par for Lua-based text processing.
On Fri, 24 Jul 2009 10:25 -0300, "Luís Eduardo Jason Santos"
I need to write a lua-based Parser that can build and repair a Lua AST
for the LuaEclipse project.
Although is relatively easy to create parsers with LPEG,
error-detection and 'online' matching is a pain.
Besides, I am not familiar with all the issues of this particular
problem, so I am looking for examples.
Therefore, I wonder if anyone has ever written an incremental parser
for Lua that I could use as a reference.
Interesting papers on the subject are welcome too.
Thanks in advance!
Luís Eduardo Jason Santos
Kein-Hong Man (esq.)
Kuala Lumpur, Malaysia