Merge pull request #59 from dubiousconst282/fix-infloop

fix: Infinite loop in repl highlighting, single-line comment skipping

Author: furesoft

Source/Silverfly.Repl/ReplPromptCallbacks.cs

@@ -21,7 +21,7 @@ protected override Task<IReadOnlyCollection<FormatSpan>> HighlightCallbackAsync(
 
         var spans = GetKeywordSpans(text, keywords)
             .Concat(brackets)
-            //.Concat(GetNumberSpans(text))
+            .Concat(GetNumberSpans(text))
             .Concat(GetStringsSpans(text))
             .ToList();
 
@@ -121,13 +121,17 @@ private static IEnumerable<FormatSpan> GetNumberSpans(string text)
             {
                 int startIndex = offset;
 
-                while (char.IsDigit(text[offset]))
+                while (offset < text.Length && char.IsDigit(text[offset]))
                 {
                     offset++;
                 }
 
-                yield return new FormatSpan(startIndex, offset, ToAnsi(MessageFormatter.Theme.Number));
+                if (startIndex == 0 || !char.IsLetter(text[startIndex - 1]))
+                {
+                    yield return new FormatSpan(startIndex, offset, ToAnsi(MessageFormatter.Theme.Number));
+                }
             }
+            offset++;
         }
     }
 }

Source/Silverfly/Lexing/IgnoreMatcher/Comments/MultiLineCommentIgnoreMatcher.cs

@@ -29,11 +29,14 @@ public void Advance(Lexer lexer)
     {
         lexer.Advance(start.Name.Length);
 
-        while (!lexer.IsMatch(end))
+        while (lexer.IsNotAtEnd())
         {
+            if (lexer.IsMatch(end))
+            {
+                lexer.Advance(end.Name.Length);
+                break;
+            }
             lexer.Advance();
         }
-
-        lexer.Advance(end.Name.Length);
     }
 }