Added position to infinite loop exception

ChrisMissal · Jun 19, 2012 · 6c9a60b · 6c9a60b
1 parent 8168ee8
commit 6c9a60b
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/src/Parsley.Test/GrammarTests.cs b/src/Parsley.Test/GrammarTests.cs
@@ -99,7 +99,7 @@ public void ApplyingARuleZeroOrMoreTimes()
 
             Parser<Token> succeedWithoutConsuming = new LambdaParser<Token>(tokens => new Parsed<Token>(null, tokens));
             Action infiniteLoop = () => ZeroOrMore(succeedWithoutConsuming).Parse(new TokenStream(Tokenize("")));
-            infiniteLoop.ShouldThrow<Exception>("Parser encountered a potential infinite loop.");
+            infiniteLoop.ShouldThrow<Exception>("Parser encountered a potential infinite loop at position (1, 1).");
         }
 
         [Fact]
@@ -123,7 +123,7 @@ public void ApplyingARuleOneOrMoreTimes()
 
             Parser<Token> succeedWithoutConsuming = new LambdaParser<Token>(tokens => new Parsed<Token>(null, tokens));
             Action infiniteLoop = () => OneOrMore(succeedWithoutConsuming).Parse(new TokenStream(Tokenize("")));
-            infiniteLoop.ShouldThrow<Exception>("Parser encountered a potential infinite loop.");
+            infiniteLoop.ShouldThrow<Exception>("Parser encountered a potential infinite loop at position (1, 1).");
         }
 
         [Fact]

diff --git a/src/Parsley/Primitives/ZeroOrMoreParser.cs b/src/Parsley/Primitives/ZeroOrMoreParser.cs
@@ -23,7 +23,7 @@ public Reply<IEnumerable<T>> Parse(TokenStream tokens)
             while (reply.Success)
             {
                 if (oldPosition == newPosition)
-                    throw new Exception("Parser encountered a potential infinite loop.");
+                    throw new Exception(string.Format("Parser encountered a potential infinite loop at position {0}.", newPosition));
 
                 list.Add(reply.Value);
                 oldPosition = newPosition;