2 // report.cs: report errors and warnings.
4 // Author: Miguel de Icaza (miguel@ximian.com)
5 // Marek Safar (marek.safar@seznam.cz)
7 // (C) 2001 Ximian, Inc. (http://www.ximian.com)
13 using System.Collections;
14 using System.Collections.Specialized;
15 using System.Diagnostics;
16 using System.Reflection;
17 using System.Reflection.Emit;
19 namespace Mono.CSharp {
22 /// This class is used to report errors and warnings t te user.
26 /// Errors encountered so far
28 static public int Errors;
31 /// Warnings encountered so far
33 static public int Warnings;
36 /// Whether errors should be throw an exception
38 static public bool Fatal;
41 /// Whether warnings should be considered errors
43 static public bool WarningsAreErrors;
46 /// Whether to dump a stack trace on errors.
48 static public bool Stacktrace;
50 static public TextWriter Stderr = Console.Error;
53 // If the 'expected' error code is reported then the
54 // compilation succeeds.
56 // Used for the test suite to excercise the error codes
58 static int expected_error = 0;
61 // Keeps track of the warnings that we are ignoring
63 public static Hashtable warning_ignore_table;
65 static Hashtable warning_regions_table;
68 /// List of symbols related to reported error/warning. You have to fill it before error/warning is reported.
70 static StringCollection extra_information = new StringCollection ();
73 // IF YOU ADD A NEW WARNING YOU HAVE TO ADD ITS ID HERE
75 public static readonly int[] AllWarnings = new int[] {
77 105, 108, 109, 114, 162, 164, 168, 169, 183, 184, 197,
78 219, 251, 252, 253, 282,
79 419, 420, 429, 436, 440, 465,
80 612, 618, 626, 628, 642, 649, 652, 658, 659, 660, 661, 665, 672,
82 1522, 1570, 1571, 1572, 1573, 1574, 1580, 1581, 1584, 1587, 1589, 1590, 1591, 1592,
83 1616, 1633, 1634, 1635, 1691, 1692,
87 3005, 3012, 3019, 3021, 3022, 3023, 3026, 3027,
88 // gmcs warnings start here
94 // Just to be sure that binary search is working
95 Array.Sort (AllWarnings);
98 public static void Reset ()
100 Errors = Warnings = 0;
101 WarningsAreErrors = false;
102 warning_ignore_table = null;
103 warning_regions_table = null;
106 abstract class AbstractMessage {
108 static void Check (int code)
110 if (code == expected_error) {
111 Environment.Exit (0);
115 public abstract bool IsWarning { get; }
117 public abstract string MessageType { get; }
119 public virtual void Print (int code, string location, string text)
124 StringBuilder msg = new StringBuilder ();
125 if (location.Length != 0) {
126 msg.Append (location);
129 msg.AppendFormat ("{0} CS{1:0000}: {2}", MessageType, code, text);
130 Stderr.WriteLine (msg.ToString ());
132 foreach (string s in extra_information)
133 Stderr.WriteLine (s + MessageType);
135 extra_information.Clear ();
138 Console.WriteLine (FriendlyStackTrace (new StackTrace (true)));
141 if (!IsWarning || WarningsAreErrors)
142 throw new Exception (text);
148 public virtual void Print (int code, Location location, string text)
150 if (location.IsNull) {
151 Print (code, "", text);
154 Print (code, location.ToString (), text);
158 sealed class WarningMessage : AbstractMessage {
159 Location loc = Location.Null;
162 public WarningMessage (int level)
167 public override bool IsWarning {
171 bool IsEnabled (int code)
173 if (RootContext.WarningLevel < Level)
176 if (warning_ignore_table != null) {
177 if (warning_ignore_table.Contains (code)) {
182 if (warning_regions_table == null || loc.Equals (Location.Null))
185 WarningRegions regions = (WarningRegions)warning_regions_table [loc.Name];
189 return regions.IsWarningEnabled (code, loc.Row);
192 public override void Print(int code, string location, string text)
194 if (!IsEnabled (code)) {
195 extra_information.Clear ();
199 if (WarningsAreErrors) {
200 new ErrorMessage ().Print (code, location, text);
205 base.Print (code, location, text);
208 public override void Print(int code, Location location, string text)
211 base.Print (code, location, text);
214 public override string MessageType {
221 sealed class ErrorMessage : AbstractMessage {
223 public override void Print(int code, string location, string text)
226 base.Print (code, location, text);
229 public override bool IsWarning {
230 get { return false; }
233 public override string MessageType {
241 public static void FeatureIsNotStandardized (Location loc, string feature)
243 Report.Error (1644, loc, "Feature `{0}' cannot be used because it is not part of the standardized ISO C# language specification", feature);
246 public static string FriendlyStackTrace (Exception e)
248 return FriendlyStackTrace (new StackTrace (e, true));
251 static string FriendlyStackTrace (StackTrace t)
253 StringBuilder sb = new StringBuilder ();
255 bool foundUserCode = false;
257 for (int i = 0; i < t.FrameCount; i++) {
258 StackFrame f = t.GetFrame (i);
259 MethodBase mb = f.GetMethod ();
261 if (!foundUserCode && mb.ReflectedType == typeof (Report))
264 foundUserCode = true;
268 if (f.GetFileLineNumber () > 0)
269 sb.AppendFormat ("(at {0}:{1}) ", f.GetFileName (), f.GetFileLineNumber ());
271 sb.AppendFormat ("{0}.{1} (", mb.ReflectedType.Name, mb.Name);
274 foreach (ParameterInfo pi in mb.GetParameters ()) {
279 sb.Append (TypeManager.CSharpName (pi.ParameterType));
284 return sb.ToString ();
287 public static void StackTrace ()
289 Console.WriteLine (FriendlyStackTrace (new StackTrace (true)));
292 public static bool IsValidWarning (int code)
294 return Array.BinarySearch (AllWarnings, code) >= 0;
297 static public void RuntimeMissingSupport (Location loc, string feature)
299 Report.Error (-88, loc, "Your .NET Runtime does not support `{0}'. Please use the latest Mono runtime instead.", feature);
303 /// In most error cases is very useful to have information about symbol that caused the error.
304 /// Call this method before you call Report.Error when it makes sense.
306 static public void SymbolRelatedToPreviousError (Location loc, string symbol)
308 SymbolRelatedToPreviousError (loc.ToString (), symbol);
311 static public void SymbolRelatedToPreviousError (MemberInfo mi)
313 TypeContainer temp_ds = TypeManager.LookupGenericTypeContainer (mi.DeclaringType);
314 if (temp_ds == null) {
315 SymbolRelatedToPreviousError (mi.DeclaringType.Assembly.Location, TypeManager.GetFullNameSignature (mi));
317 MethodBase mb = mi as MethodBase;
319 while (mb.Mono_IsInflatedMethod)
320 mb = mb.GetGenericMethodDefinition ();
321 IMethodData md = TypeManager.GetMethod (mb);
322 SymbolRelatedToPreviousError (md.Location, md.GetSignatureForError ());
326 MemberCore mc = temp_ds.GetDefinition (mi.Name);
327 SymbolRelatedToPreviousError (mc);
331 static public void SymbolRelatedToPreviousError (MemberCore mc)
333 SymbolRelatedToPreviousError (mc.Location, mc.GetSignatureForError ());
336 static public void SymbolRelatedToPreviousError (Type type)
338 if (type.IsGenericInstance)
339 type = type.GetGenericTypeDefinition ();
341 if (type.IsGenericParameter) {
342 TypeParameter tp = TypeManager.LookupTypeParameter (type);
344 SymbolRelatedToPreviousError (tp.Location, "");
349 if (type is TypeBuilder) {
350 DeclSpace temp_ds = TypeManager.LookupDeclSpace (type);
351 SymbolRelatedToPreviousError (temp_ds.Location, TypeManager.CSharpName (type));
352 } else if (type.HasElementType) {
353 SymbolRelatedToPreviousError (type.GetElementType ());
355 SymbolRelatedToPreviousError (type.Assembly.Location, TypeManager.CSharpName (type));
359 static void SymbolRelatedToPreviousError (string loc, string symbol)
361 extra_information.Add (String.Format ("{0}: `{1}', name of symbol related to previous ", loc, symbol));
364 public static void ExtraInformation (Location loc, string msg)
366 extra_information.Add (String.Format ("{0} {1}", loc, msg));
369 public static WarningRegions RegisterWarningRegion (Location location)
371 if (warning_regions_table == null)
372 warning_regions_table = new Hashtable ();
374 WarningRegions regions = (WarningRegions)warning_regions_table [location.Name];
375 if (regions == null) {
376 regions = new WarningRegions ();
377 warning_regions_table.Add (location.Name, regions);
382 static public void Warning (int code, int level, Location loc, string format, params string[] args)
384 WarningMessage w = new WarningMessage (level);
385 w.Print (code, loc, String.Format (format, args));
388 static public void Warning (int code, int level, string format, params string[] args)
390 Warning (code, level, Location.Null, String.Format (format, args));
393 static public void Error (int code, string format, params string[] args)
395 Error (code, Location.Null, String.Format (format, args));
398 static public void Error (int code, Location loc, string format, params string[] args)
400 Error (code, loc, String.Format (format, args));
403 static void Error (int code, Location loc, string error)
405 new ErrorMessage ().Print (code, loc, error);
408 static public void SetIgnoreWarning (int code)
410 if (warning_ignore_table == null)
411 warning_ignore_table = new Hashtable ();
413 warning_ignore_table [code] = true;
416 static public int ExpectedError {
418 expected_error = value;
421 return expected_error;
425 public static int DebugFlags = 0;
427 [Conditional ("MCS_DEBUG")]
428 static public void Debug (string message, params object[] args)
430 Debug (4, message, args);
433 [Conditional ("MCS_DEBUG")]
434 static public void Debug (int category, string message, params object[] args)
436 if ((category & DebugFlags) == 0)
439 StringBuilder sb = new StringBuilder (message);
441 if ((args != null) && (args.Length > 0)) {
445 foreach (object arg in args) {
452 else if (arg is ICollection)
453 sb.Append (PrintCollection ((ICollection) arg));
459 Console.WriteLine (sb.ToString ());
462 static public string PrintCollection (ICollection collection)
464 StringBuilder sb = new StringBuilder ();
466 sb.Append (collection.GetType ());
470 foreach (object o in collection) {
479 return sb.ToString ();
483 public enum TimerType {
493 public enum CounterType {
502 static DateTime[] timer_start;
503 static TimeSpan[] timers;
504 static long[] timer_counters;
505 static long[] counters;
509 timer_start = new DateTime [(int) TimerType.CountTimers];
510 timers = new TimeSpan [(int) TimerType.CountTimers];
511 timer_counters = new long [(int) TimerType.CountTimers];
512 counters = new long [(int) CounterType.CountCounters];
514 for (int i = 0; i < (int) TimerType.CountTimers; i++) {
515 timer_start [i] = DateTime.Now;
516 timers [i] = TimeSpan.Zero;
520 [Conditional("TIMER")]
521 static public void IncrementCounter (CounterType which)
523 ++counters [(int) which];
526 [Conditional("TIMER")]
527 static public void StartTimer (TimerType which)
529 timer_start [(int) which] = DateTime.Now;
532 [Conditional("TIMER")]
533 static public void StopTimer (TimerType which)
535 timers [(int) which] += DateTime.Now - timer_start [(int) which];
536 ++timer_counters [(int) which];
539 [Conditional("TIMER")]
540 static public void ShowTimers ()
542 ShowTimer (TimerType.FindMembers, "- FindMembers timer");
543 ShowTimer (TimerType.TcFindMembers, "- TypeContainer.FindMembers timer");
544 ShowTimer (TimerType.MemberLookup, "- MemberLookup timer");
545 ShowTimer (TimerType.CachedLookup, "- CachedLookup timer");
546 ShowTimer (TimerType.CacheInit, "- Cache init");
547 ShowTimer (TimerType.MiscTimer, "- Misc timer");
549 ShowCounter (CounterType.FindMembers, "- Find members");
550 ShowCounter (CounterType.MemberCache, "- Member cache");
551 ShowCounter (CounterType.MiscCounter, "- Misc counter");
554 static public void ShowCounter (CounterType which, string msg)
556 Console.WriteLine ("{0} {1}", counters [(int) which], msg);
559 static public void ShowTimer (TimerType which, string msg)
562 "[{0:00}:{1:000}] {2} (used {3} times)",
563 (int) timers [(int) which].TotalSeconds,
564 timers [(int) which].Milliseconds, msg,
565 timer_counters [(int) which]);
569 public class InternalErrorException : Exception {
570 public InternalErrorException ()
571 : base ("Internal error")
575 public InternalErrorException (string message)
582 /// Handles #pragma warning
584 public class WarningRegions {
586 abstract class PragmaCmd
590 protected PragmaCmd (int line)
595 public abstract bool IsEnabled (int code, bool previous);
598 class Disable : PragmaCmd
601 public Disable (int line, int code)
607 public override bool IsEnabled (int code, bool previous)
609 return this.code == code ? false : previous;
613 class DisableAll : PragmaCmd
615 public DisableAll (int line)
618 public override bool IsEnabled(int code, bool previous)
624 class Enable : PragmaCmd
627 public Enable (int line, int code)
633 public override bool IsEnabled(int code, bool previous)
635 return this.code == code ? true : previous;
639 class EnableAll : PragmaCmd
641 public EnableAll (int line)
644 public override bool IsEnabled(int code, bool previous)
651 ArrayList regions = new ArrayList ();
653 public void WarningDisable (int line)
655 regions.Add (new DisableAll (line));
658 public void WarningDisable (Location location, int code)
660 if (CheckWarningCode (code, location))
661 regions.Add (new Disable (location.Row, code));
664 public void WarningEnable (int line)
666 regions.Add (new EnableAll (line));
669 public void WarningEnable (Location location, int code)
671 if (CheckWarningCode (code, location))
672 regions.Add (new Enable (location.Row, code));
675 public bool IsWarningEnabled (int code, int src_line)
678 foreach (PragmaCmd pragma in regions) {
679 if (src_line < pragma.Line)
682 result = pragma.IsEnabled (code, result);
687 bool CheckWarningCode (int code, Location loc)
689 if (Report.IsValidWarning (code))
692 Report.Warning (1691, 1, loc, "`{0}' is not a valid warning number", code.ToString ());