2 // report.cs: report errors and warnings.
4 // Author: Miguel de Icaza (miguel@ximian.com)
6 // (C) 2001 Ximian, Inc. (http://www.ximian.com)
10 // FIXME: currently our class library does not support custom number format strings
14 using System.Collections;
15 using System.Collections.Specialized;
16 using System.Diagnostics;
17 using System.Reflection;
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;
51 // If the 'expected' error code is reported then the
52 // compilation succeeds.
54 // Used for the test suite to excercise the error codes
56 static int expected_error = 0;
59 // Keeps track of the warnings that we are ignoring
61 static Hashtable warning_ignore_table;
64 /// List of symbols related to reported error/warning. You have to fill it before error/warning is reported.
66 static StringCollection related_symbols = new StringCollection ();
69 public WarningData (int level, string text) {
74 public bool IsEnabled ()
76 return RootContext.WarningLevel >= Level;
79 public string Format (params object[] args)
81 return String.Format (Message, args);
84 readonly string Message;
88 static string GetErrorMsg (int error_no)
91 case 0122: return "'{0}' is inaccessible due to its protection level";
92 case 0134: return "Cannot use qualified namespace names in nested namespace declarations";
93 case 0145: return "A const field requires a value to be provided";
94 case 0160: return "A previous catch clause already catches all exceptions of this or a super type '{0}'";
95 case 0210: return "You must provide an initializer in a fixed or using statement declaration";
96 case 0243: return "Conditional not valid on '{0}' because it is an override method";
97 case 0247: return "Cannot use a negative size with stackalloc";
98 case 0415: return "The 'IndexerName' attribute is valid only on an indexer that is not an explicit interface member declaration";
99 case 0553: return "'{0}' : user defined conversion to/from base class";
100 case 0554: return "'{0}' : user defined conversion to/from derived class";
101 case 0577: return "Conditional not valid on '{0}' because it is a destructor, operator, or explicit interface implementation";
102 case 0578: return "Conditional not valid on '{0}' because its return type is not void";
103 case 0582: return "Conditional not valid on interface members";
104 case 0592: return "Attribute '{0}' is not valid on this declaration type. It is valid on {1} declarations only.";
105 case 0601: return "The DllImport attribute must be specified on a method marked `static' and `extern'";
106 case 0609: return "Cannot set the 'IndexerName' attribute on an indexer marked override";
107 case 0610: return "Field or property cannot be of type '{0}'";
108 case 0619: return "'{0}' is obsolete: '{1}'";
109 case 0626: return "Method, operator, or accessor '{0}' is marked external and has no attributes on it. Consider adding a DllImport attribute to specify the external implementation";
110 case 0629: return "Conditional member '{0}' cannot implement interface member";
111 case 0633: return "The argument to the 'IndexerName' attribute must be a valid identifier";
112 case 0657: return "'{0}' is not a valid attribute location for this declaration. Valid attribute locations for this declaration are '{1}'";
113 case 1555: return "Could not find '{0}' specified for Main method";
114 case 1556: return "'{0}' specified for Main method must be a valid class or struct";
115 case 1618: return "Cannot create delegate with '{0}' because it has a Conditional attribute";
116 case 1667: return "'{0}' is not valid on property or event accessors. It is valid on '{1}' declarations only";
117 case 1669: return "__arglist is not valid in this context";
118 case 3000: return "Methods with variable arguments are not CLS-compliant";
119 case 3001: return "Argument type '{0}' is not CLS-compliant";
120 case 3002: return "Return type of '{0}' is not CLS-compliant";
121 case 3003: return "Type of '{0}' is not CLS-compliant";
122 case 3005: return "Identifier '{0}' differing only in case is not CLS-compliant";
123 case 3006: return "Overloaded method '{0}' differing only in ref or out, or in array rank, is not CLS-compliant";
124 case 3008: return "Identifier '{0}' is not CLS-compliant";
125 case 3009: return "'{0}': base type '{1}' is not CLS-compliant";
126 case 3010: return "'{0}': CLS-compliant interfaces must have only CLS-compliant members";
127 case 3011: return "'{0}': only CLS-compliant members can be abstract";
128 case 3013: return "Added modules must be marked with the CLSCompliant attribute to match the assembly";
129 case 3014: return "'{0}' cannot be marked as CLS-compliant because the assembly does not have a CLSCompliant attribute";
130 case 3015: return "'{0}' has no accessible constructors which use only CLS-compliant types";
131 case 3016: return "Arrays as attribute arguments are not CLS-compliant";
133 throw new InternalErrorException (String.Format ("Missing error '{0}' text", error_no));
136 static WarningData GetWarningMsg (int warn_no)
139 case -24: return new WarningData (1, "The Microsoft Runtime cannot set this marshal info. Please use the Mono runtime instead.");
140 case -28: return new WarningData (1, "The Microsoft .NET Runtime 1.x does not permit setting custom attributes on the return type");
141 case 0612: return new WarningData (1, "'{0}' is obsolete");
142 case 0618: return new WarningData (2, "'{0}' is obsolete: '{1}'");
143 case 0672: return new WarningData (1, "Member '{0}' overrides obsolete member. Add the Obsolete attribute to '{0}'");
144 case 3012: return new WarningData (1, "You must specify the CLSCompliant attribute on the assembly, not the module, to enable CLS compliance checking");
145 case 3019: return new WarningData (2, "CLS compliance checking will not be performed on '{0}' because it is private or internal");
148 throw new InternalErrorException (String.Format ("Wrong warning number '{0}'", warn_no));
151 static void Check (int code)
153 if (code == expected_error){
155 throw new Exception ();
157 Environment.Exit (0);
161 public static string FriendlyStackTrace (Exception e)
163 return FriendlyStackTrace (new StackTrace (e, true));
166 static string FriendlyStackTrace (StackTrace t)
168 StringBuilder sb = new StringBuilder ();
170 bool foundUserCode = false;
172 for (int i = 0; i < t.FrameCount; i++) {
173 StackFrame f = t.GetFrame (i);
174 MethodBase mb = f.GetMethod ();
176 if (!foundUserCode && mb.ReflectedType == typeof (Report))
179 foundUserCode = true;
183 if (f.GetFileLineNumber () > 0)
184 sb.AppendFormat ("(at {0}:{1}) ", f.GetFileName (), f.GetFileLineNumber ());
186 sb.AppendFormat ("{0}.{1} (", mb.ReflectedType.Name, mb.Name);
189 foreach (ParameterInfo pi in mb.GetParameters ()) {
194 sb.Append (TypeManager.CSharpName (pi.ParameterType));
199 return sb.ToString ();
202 [Obsolete ("Use SymbolRelatedToPreviousError for better error description")]
203 static public void LocationOfPreviousError (Location loc)
205 Console.WriteLine (String.Format ("{0}({1}) (Location of symbol related to previous error)", loc.Name, loc.Row));
209 /// In most error cases is very useful to have information about symbol that caused the error.
210 /// Call this method before you call Report.Error when it makes sense.
212 static public void SymbolRelatedToPreviousError (Location loc, string symbol)
214 SymbolRelatedToPreviousError (String.Format ("{0}({1})", loc.Name, loc.Row), symbol);
217 static public void SymbolRelatedToPreviousError (MemberInfo mi)
219 DeclSpace temp_ds = TypeManager.LookupDeclSpace (mi.DeclaringType);
220 if (temp_ds == null) {
221 SymbolRelatedToPreviousError (mi.DeclaringType.Assembly.Location, TypeManager.GetFullNameSignature (mi));
223 string name = String.Concat (temp_ds.Name, ".", mi.Name);
224 MemberCore mc = temp_ds.GetDefinition (name) as MemberCore;
225 SymbolRelatedToPreviousError (mc.Location, mc.GetSignatureForError ());
229 static public void SymbolRelatedToPreviousError (Type type)
231 SymbolRelatedToPreviousError (type.Assembly.Location, TypeManager.CSharpName (type));
234 static void SymbolRelatedToPreviousError (string loc, string symbol)
236 related_symbols.Add (String.Format ("{0}: ('{1}' name of symbol related to previous error)", loc, symbol));
239 static public void RealError (string msg)
242 Console.WriteLine (msg);
244 foreach (string s in related_symbols)
245 Console.WriteLine (s);
246 related_symbols.Clear ();
249 Console.WriteLine (FriendlyStackTrace (new StackTrace (true)));
252 throw new Exception (msg);
257 /// Method reports warning message. Only one reason why exist Warning and Report methods is beter code readability.
259 static public void Warning_T (int code, Location loc, params object[] args)
261 WarningData warning = GetWarningMsg (code);
262 if (warning.IsEnabled ())
263 Warning (code, loc, warning.Format (args));
265 related_symbols.Clear ();
269 /// Reports error message.
271 static public void Error_T (int code, Location loc, params object[] args)
273 Error_T (code, String.Format ("{0}({1})", loc.Name, loc.Row), args);
276 static public void Error_T (int code, string location, params object[] args)
278 string errorText = String.Format (GetErrorMsg (code), args);
279 PrintError (code, location, errorText);
282 static void PrintError (int code, string l, string text)
287 string msg = String.Format ("{0} error CS{1:0000}: {2}", l, code, text);
292 static public void Error (int code, Location l, string text)
297 string msg = String.Format (
298 "{0}({1}) error CS{2:0000}: {3}", l.Name, l.Row, code, text);
299 // "{0}({1}) error CS{2}: {3}", l.Name, l.Row, code, text);
305 static public void Warning (int code, Location l, string text)
310 if (warning_ignore_table != null){
311 if (warning_ignore_table.Contains (code)) {
312 related_symbols.Clear ();
317 if (WarningsAreErrors)
318 Error (code, l, text);
322 if (Location.IsNull (l))
325 row = l.Row.ToString ();
327 Console.WriteLine (String.Format (
328 "{0}({1}) warning CS{2:0000}: {3}",
329 // "{0}({1}) warning CS{2}: {3}",
330 l.Name, row, code, text));
333 foreach (string s in related_symbols)
334 Console.WriteLine (s);
335 related_symbols.Clear ();
340 Console.WriteLine (new StackTrace ().ToString ());
344 static public void Warning (int code, string text)
346 Warning (code, Location.Null, text);
349 static public void Warning (int code, int level, string text)
351 if (RootContext.WarningLevel >= level)
352 Warning (code, Location.Null, text);
355 static public void Warning (int code, int level, Location l, string text)
357 if (RootContext.WarningLevel >= level)
358 Warning (code, l, text);
361 static public void Error (int code, string text)
366 string msg = String.Format ("error CS{0:0000}: {1}", code, text);
367 // string msg = String.Format ("error CS{0}: {1}", code, text);
373 static public void Error (int code, Location loc, string format, params object[] args)
375 Error (code, loc, String.Format (format, args));
378 static public void Warning (int code, Location loc, string format, params object[] args)
380 Warning (code, loc, String.Format (format, args));
383 static public void Warning (int code, string format, params object[] args)
385 Warning (code, String.Format (format, args));
388 static public void Message (Message m)
390 if (m is ErrorMessage)
391 Error (m.code, m.text);
393 Warning (m.code, m.text);
396 static public void SetIgnoreWarning (int code)
398 if (warning_ignore_table == null)
399 warning_ignore_table = new Hashtable ();
401 warning_ignore_table [code] = true;
404 static public int ExpectedError {
406 expected_error = value;
409 return expected_error;
413 public static int DebugFlags = 0;
415 [Conditional ("MCS_DEBUG")]
416 static public void Debug (string message, params object[] args)
418 Debug (4, message, args);
421 [Conditional ("MCS_DEBUG")]
422 static public void Debug (int category, string message, params object[] args)
424 if ((category & DebugFlags) == 0)
427 StringBuilder sb = new StringBuilder (message);
429 if ((args != null) && (args.Length > 0)) {
433 foreach (object arg in args) {
440 else if (arg is ICollection)
441 sb.Append (PrintCollection ((ICollection) arg));
447 Console.WriteLine (sb.ToString ());
450 static public string PrintCollection (ICollection collection)
452 StringBuilder sb = new StringBuilder ();
454 sb.Append (collection.GetType ());
458 foreach (object o in collection) {
467 return sb.ToString ();
471 public class Message {
475 public Message (int code, string text)
482 public class WarningMessage : Message {
483 public WarningMessage (int code, string text) : base (code, text)
488 public class ErrorMessage : Message {
489 public ErrorMessage (int code, string text) : base (code, text)
494 // For compatibility reasons with old code.
496 public static void report_error (string error)
498 Console.Write ("ERROR: ");
499 Console.WriteLine (error);
503 public enum TimerType {
513 public enum CounterType {
522 static DateTime[] timer_start;
523 static TimeSpan[] timers;
524 static long[] timer_counters;
525 static long[] counters;
529 timer_start = new DateTime [(int) TimerType.CountTimers];
530 timers = new TimeSpan [(int) TimerType.CountTimers];
531 timer_counters = new long [(int) TimerType.CountTimers];
532 counters = new long [(int) CounterType.CountCounters];
534 for (int i = 0; i < (int) TimerType.CountTimers; i++) {
535 timer_start [i] = DateTime.Now;
536 timers [i] = TimeSpan.Zero;
540 [Conditional("TIMER")]
541 static public void IncrementCounter (CounterType which)
543 ++counters [(int) which];
546 [Conditional("TIMER")]
547 static public void StartTimer (TimerType which)
549 timer_start [(int) which] = DateTime.Now;
552 [Conditional("TIMER")]
553 static public void StopTimer (TimerType which)
555 timers [(int) which] += DateTime.Now - timer_start [(int) which];
556 ++timer_counters [(int) which];
559 [Conditional("TIMER")]
560 static public void ShowTimers ()
562 ShowTimer (TimerType.FindMembers, "- FindMembers timer");
563 ShowTimer (TimerType.TcFindMembers, "- TypeContainer.FindMembers timer");
564 ShowTimer (TimerType.MemberLookup, "- MemberLookup timer");
565 ShowTimer (TimerType.CachedLookup, "- CachedLookup timer");
566 ShowTimer (TimerType.CacheInit, "- Cache init");
567 ShowTimer (TimerType.MiscTimer, "- Misc timer");
569 ShowCounter (CounterType.FindMembers, "- Find members");
570 ShowCounter (CounterType.MemberCache, "- Member cache");
571 ShowCounter (CounterType.MiscCounter, "- Misc counter");
574 static public void ShowCounter (CounterType which, string msg)
576 Console.WriteLine ("{0} {1}", counters [(int) which], msg);
579 static public void ShowTimer (TimerType which, string msg)
582 "[{0:00}:{1:000}] {2} (used {3} times)",
583 (int) timers [(int) which].TotalSeconds,
584 timers [(int) which].Milliseconds, msg,
585 timer_counters [(int) which]);
589 public class InternalErrorException : Exception {
590 public InternalErrorException ()
591 : base ("Internal error")
595 public InternalErrorException (string message)