From: Wolfgang Bangerth <bangerth@math.tamu.edu>
Date: Sat, 26 Jul 2014 12:58:55 +0000 (-0500)
Subject: Improve the wording of an exception.
X-Git-Tag: v8.2.0-rc1~243^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F33%2Fhead;p=dealii.git

Improve the wording of an exception.

I ran into this exception and couldn't figure out what's wrong without looking at the source code.
---

diff --git a/source/base/parsed_function.cc b/source/base/parsed_function.cc
index 14b975a039..47dea746d3 100644
--- a/source/base/parsed_function.cc
+++ b/source/base/parsed_function.cc
@@ -128,7 +128,7 @@ namespace Functions
     constants["pi"] = numbers::PI;
     constants["Pi"] = numbers::PI;
 
-    unsigned int nn = (Utilities::split_string_list(vnames)).size();
+    const unsigned int nn = (Utilities::split_string_list(vnames)).size();
     switch (nn)
       {
       case dim:
@@ -140,7 +140,13 @@ namespace Functions
         function_object.initialize(vnames, expression, constants, true);
         break;
       default:
-        AssertThrow(false, ExcMessage("Not the correct size. Check your code."));
+        AssertThrow(false,
+                    ExcMessage("The list of variables specified is <" + vnames
+                               + "> which is a list of length "
+                               + Utilities::int_to_string(nn)
+                               + " but it has to be a list of length equal to"
+                               + " either dim (for a time-independent function)"
+                               + " or dim+1 (for a time-dependent function)."));
       }
   }