ghc command line evaluation
Pedro Miguel Duarte
pedromiguel.duarte at gmail.com
Wed Apr 5 14:32:00 EDT 2006
I am writing a Java program with a call to a Haskell module M.hs,
in order to evaluate some expression expr.
A very simple idea, which I got somewhere in the net, is to create a
Process object p which executes a GHC command-line instruction:
Process p = Runtime.getRuntime();
p.exec( " ghc M.hs -e \"expr\" " );
This would be very simple, if it worked...
My problem is that expressions i want to evaluate involve
strings, and GHC command-line 'ghc' misinterprets some special symbols when
it parses double quoted strings.
ghc -e " reverse \"2<3\" " gives an error!
Thus any one know a simple way around this?
The only one obvious to me is to create a temporary
Haskell module M_tmp.hs, with the expression to be evaluated,
which is then executed through a command-line instruction
ghc M_tmp.hs -e main
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Glasgow-haskell-users