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Parser Test 2 (Something a bit more ambitious, maybe?)

Posted 01-03-2013 at 01:36 AM by rainbowsally

Parser Test 2 (Something a bit more ambitious, maybe?)

Here's test2.

Features:

Lots of custom parser funcs in order to create a parser for algebraic expressions. See 'expr' 'times', and all that good stuff in the source file 'src/test2.cpp' below.

This is the output from a session.

Code:

Input some math expressions and maybe we can identify them.
Type 'quit' to end
3b + 5 * 4e-5 / (2 * 5) + 4
<--------------------------->

...

rainbowsally

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Parser Test 1

Posted 01-02-2013 at 08:24 PM by rainbowsally
Updated 01-02-2013 at 08:26 PM by rainbowsally

Tags computer mad science, debugger, mc2, parsing, simple c

Parser Test 1

------------------------------------

See the previous blog entry: "Playing with parsing" here.
http://www.linuxquestions.org/questi...wsally-615861/
to grab the files we need to include for these tests and a working mc2 definitions file for those who have mc2. Type "mc2 -init" first time. After that "make update" will add/remove files from the makefile.

[Note that we can link OR include...

rainbowsally

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Playing with parsing

Posted 01-02-2013 at 07:46 PM by rainbowsally
Updated 08-06-2014 at 08:36 AM by rainbowsally (typo correction)

Tags computer mad science, debugger, mc2, parsing, simple c

Playing with parsing

Today's features:

Creating an extensible mid-level parser that makes sense in C.
Looking at BNF-like syntax and C syntax similarities.
Tossing flex as far as we can throw it. While its still burning.

The file set here isn't 'finalized' in any way but it's been stable for a few days. These examples are therefor not about THIS set of functions but about parsing in general, although this file set will very likely be part of the mc2 parsing system...

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https problem in transparent proxy

Posted 01-02-2013 at 04:21 AM by nandhapswan

I have configured squid as transparent proxy. But my users can not access the sites having https. Logically I should use iptables to redirect all the traffic.

The quick response will highly appreciated.

--
Regards,
Nantha....

nandhapswan

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haskell: get lines and handle end of file

Posted 01-01-2013 at 02:23 AM by hydraMax (Bits and Pixels)
Updated 01-01-2013 at 02:27 AM by hydraMax

Tags haskell

I thought I'd post this convenience function, since I didn't see an obvious one in base:

Code:

import Prelude hiding (catch)
import Control.Exception
import System.IO.Error hiding (catch)

readl f = catch (getLine >>= return . Just)
                (\e -> if (isEOFErrorType . ioeGetErrorType) e
                         then return Nothing
                         else ioError e)
          >>= \a -> case a of

...

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