From: Matthijs Kooijman <m.kooijman@student.utwente.nl>
Date: Mon, 22 Jun 2009 12:23:58 +0000 (+0200)
Subject: Add error message to mkConcSm for unsupported expressions.
X-Git-Url: https://git.stderr.nl/gitweb?a=commitdiff_plain;ds=sidebyside;h=81bbc7b720fe914d5655bd6a125925d54a62c5af;hp=-c;p=matthijs%2Fmaster-project%2Fc%CE%BBash.git

Add error message to mkConcSm for unsupported expressions.

Previously, there was only a cryptic message from ghc, now it also
mentions the unsupported expression.
---

81bbc7b720fe914d5655bd6a125925d54a62c5af
diff --git a/VHDL.hs b/VHDL.hs
index 229ba5c..a450c04 100644
--- a/VHDL.hs
+++ b/VHDL.hs
@@ -350,6 +350,7 @@ mkConcSm (bndr, (Case (Var scrut) b ty [(_, _, Var false), (con, _, Var true)]))
     return $ mkCondAssign (Left bndr) cond_expr true_expr false_expr
 mkConcSm (_, (Case (Var _) _ _ alts)) = error "VHDL.mkConcSm Not in normal form: Case statement with more than two alternatives"
 mkConcSm (_, Case _ _ _ _) = error "VHDL.mkConcSm Not in normal form: Case statement has does not have a simple variable as scrutinee"
+mkConcSm (bndr, expr) = error $ "VHDL.mkConcSM Unsupported binding in let expression: " ++ pprString bndr ++ " = " ++ pprString expr
 
 -- Create an unconditional assignment statement
 mkUncondAssign ::