From 7db4b641ce6abe90dd404459cd5eccb6e67f618c Mon Sep 17 00:00:00 2001
From: krasimir <krasimir@chalmers.se>
Date: Wed, 20 May 2009 21:03:56 +0000
Subject: refactor the PGF.Expr type and the evaluation of abstract expressions

---
 src/PGF/Expr.hs-boot | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 src/PGF/Expr.hs-boot

(limited to 'src/PGF/Expr.hs-boot')

diff --git a/src/PGF/Expr.hs-boot b/src/PGF/Expr.hs-boot
new file mode 100644
index 000000000..0369be173
--- /dev/null
+++ b/src/PGF/Expr.hs-boot
@@ -0,0 +1,13 @@
+module PGF.Expr where
+
+import qualified Text.PrettyPrint as PP
+import qualified Text.ParserCombinators.ReadP as RP
+
+data Expr
+
+instance Eq  Expr
+instance Ord Expr
+
+pFactor :: RP.ReadP Expr
+
+ppExpr :: Int -> Expr -> PP.Doc
-- 
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