Re: [Haskell-cafe] Problem with JHC

According to the paste you gave for the JHC test run: Here is what happens when I try to run it: philip@desktop:~/jhctut$ ./jtree Give me a tree: T AND (L 1, L 2) jtree_code.c:2670: case fell off Aborted You gave it parens not square brackets. -Ross On Nov 11, 2009, at 11:45 AM, Philippos Apolinarius wrote:

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you declared 'T Op [Tree]' so you should give 'T AND [L 1, L 2]' as the tree, right? Hi, Felipe. You are right. This means that I gave the correct input to the program. As you can see, I typed 'T AND [L 1, L 2]'. Therefore, JHC was expected to parse and print it. However, it failed to parse it. The program works perfectly well in GHC. Here is the GHC output:

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philip@desktop:~/jhctut$ ghc tree.hs --make [1 of 1] Compiling Main ( tree.hs, tree.o ) Linking tree ... philip@desktop:~/jhctut$ ./tree Give me a tree: T AND [L 1, L 2] T AND [L 1,L 2]

--- On Wed, 11/11/09, Felipe Lessa wrote:

From: Felipe Lessa Subject: Re: [Haskell-cafe] Problem with JHC To: haskell-cafe@haskell.org Received: Wednesday, November 11, 2009, 6:23 AM

On Wed, Nov 11, 2009 at 04:32:05AM -0800, Philippos Apolinarius wrote:

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data Op = AND | OR | NOT deriving (Show, Read) data Tree= L Int | T Op [Tree] deriving (Show, Read)

Hmm, you see,

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philip@desktop:~/jhctut$ ./jtree Give me a tree: T AND (L 1, L 2)

jtree_code.c:2670: case fell off Aborted

you declared 'T Op [Tree]' so you should give 'T AND [L 1, L 2]' as the tree, right?

-- Felipe. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

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