Add JSC stack trace parser to fix last failing tests

Author: sleeuwen

SourceMaps.StackTraces.Tests/StackTraceParserTests.cs

@@ -9,7 +9,7 @@ namespace SourceMaps.StackTraces.Tests
     public class StackTraceParserTests
     {
         [Theory]
-        [MemberData(nameof(SingleLineStackTraceData))]
+        [MemberData(nameof(StackTraceData))]
         public void ParseTests(string stacktrace, List<StackFrame> expected)
         {
             var actual = StackTraceParser.Parse(stacktrace).Frames;
@@ -32,34 +32,6 @@ public void ParseTests(string stacktrace, List<StackFrame> expected)
             }
         }
 
-        public static IEnumerable<object[]> SingleLineStackTraceData()
-        {
-            foreach (var data in StackTraceData())
-            {
-                var stacktrace = (string) data[0];
-                var expected = (List<StackFrame>) data[1];
-
-                var lines = stacktrace.Split('\n');
-                if (expected.Count != lines.Length && expected.Count != lines.Length - 1)
-                    throw new Exception($"Invalid number of stack frames: {stacktrace}");
-
-                var offset = 0;
-                if (expected.Count == lines.Length - 1)
-                    offset = 1;
-
-                for (var i = 0; i+offset < lines.Length; i++)
-                {
-                    var line = lines[i + offset];
-                    var frame = expected[i];
-
-                    if (string.IsNullOrWhiteSpace(line))
-                        throw new Exception($"Invalid stack trace line:{i+offset}\n{stacktrace}");
-
-                    yield return new object[] {line.Trim(), new List<StackFrame> {frame}};
-                }
-            }
-        }
-
         public static IEnumerable<object[]> StackTraceData()
         {
             // Firefox
@@ -139,7 +111,6 @@ at throwErr (https://localhost:5001/dist/site.js:1:45)
                         LineNumber = 43,
                         ColumnNumber = 36,
                     },
-                    null,
                     new StackFrame
                     {
                         File = "C:\\\\project files\\\\spect\\\\src\\\\index.js",
@@ -1381,11 +1352,6 @@ at throwErr (https://localhost:5001/dist/site.js:1:45)
                         Arguments = Array.Empty<string>(), LineNumber = 43, ColumnNumber = 36
                     },
                     new StackFrame
-                    {
-                        File = null, Method = "<anonymous>",
-                        Arguments = Array.Empty<string>(), LineNumber = null, ColumnNumber = null
-                    },
-                    new StackFrame
                     {
                         File = "C:\\\\projects\\\\spect\\\\src\\\\index.js",
                         Method = "(anonymous function).then",

SourceMaps.StackTraces/StackTraceParser.cs

@@ -52,7 +52,8 @@ public static StackTrace Parse(string stacktrace)
                     TryParseChrome(line, out frame) ||
                     TryParseWinJs(line, out frame) ||
                     TryParseGecko(line, out frame) ||
-                    TryParseNode(line, out frame);
+                    TryParseNode(line, out frame) ||
+                    TryParseJsc(line, out frame);
 
                 if (success)
                     result.Append(frame);
@@ -163,5 +164,25 @@ internal static bool TryParseNode(string line, out StackFrame frame)
 
             return true;
         }
+
+        private static readonly Regex JscRe = new Regex(@"^\s*(?:([^@]*)(?:\((.*?)\))?@)?(\S.*?):(\d+)(?::(\d+))?\s*$", RegexOptions.IgnoreCase | RegexOptions.Compiled);
+
+        internal static bool TryParseJsc(string line, out StackFrame frame)
+        {
+            frame = null;
+
+            var match = JscRe.Match(line);
+            if (!match.Success)
+                return false;
+
+            frame = new StackFrame();
+            frame.File = match.Groups[3].Value;
+            frame.Method = !string.IsNullOrEmpty(match.Groups[1].Value) ? match.Groups[1].Value : "<unknown>";
+            frame.Arguments = Array.Empty<string>();
+            frame.LineNumber = int.Parse(match.Groups[4].Value);
+            frame.ColumnNumber = !string.IsNullOrEmpty(match.Groups[5].Value) ? int.Parse(match.Groups[5].Value) : (int?)null;
+
+            return true;
+        }
     }
 }