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Message-ID: <6ff764650705130858s7bbc2263sc3d99ed9e8a4760c@mail.gmail.com>
Date: Sun, 13 May 2007 11:58:32 -0400
From: "Isaac Freeman" <memotype@gmail.com>
To: caml-list@yquem.inria.fr
Subject: camlp4 and streams
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X-Spam: no; 0.00; camlp:01 camlp:01 expr:01 expr:01 ocaml:01 ocamlc:01 -pp:01 cmo:01 mlast:01 cmo:01 uncaught:01 pcaml:01 exception:01 preprocessor:01 expression:02 

Hello,

I am having some problems using streams in my camlp4 extentions. The code:

EXTEND
  expr: LEVEL "expr1"
    [[ "yield"; e1 = expr LEVEL "simple";
       "continue"; e2 = expr LEVEL "simple" ->
          <:expr< [< $e1$; $e2$ >] >> ]];
END;;

produces the error:

isaac@lappy:~/stuff/ocaml$ ocamlc -pp "camlp4o pa_extend.cmo
q_MLast.cmo" -I +camlp4 -c gen-syntax.ml
File "gen-syntax.ml", line 8, characters 18-20:
While expanding quotation "expr":
Parse error: illegal begin of expression
Uncaught exception: Pcaml.Qerror("expr", 1, _)
Preprocessor error

However, when I change the stream into a list, it works fine, so I'm
sure there is just some technicality in using streams here that I'm
not accounting for properly. Any ideas?

Thanks,
Isaac

-- 
James "Isaac" Freeman
memotype (at) gmail.com