OLD | NEW |
1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library fasta.errors; | 5 library fasta.errors; |
6 | 6 |
7 import 'dart:async' show | 7 import 'dart:async' show |
8 Future; | 8 Future; |
9 | 9 |
10 import 'dart:convert' show | 10 import 'dart:convert' show |
11 JSON; | 11 JSON; |
12 | 12 |
13 import 'dart:io' show | 13 import 'dart:io' show |
14 ContentType, | 14 ContentType, |
15 HttpClient, | 15 HttpClient, |
16 HttpClientRequest, | 16 HttpClientRequest, |
17 SocketException, | 17 SocketException, |
18 stderr; | 18 stderr; |
19 | 19 |
20 import 'colors.dart' show | 20 import 'colors.dart' show |
21 red; | 21 red; |
22 | 22 |
23 import 'util/relativize.dart' show | 23 import 'messages.dart' as messages; |
24 relativizeUri; | |
25 | 24 |
26 const String defaultServerAddress = "http://127.0.0.1:59410/"; | 25 const String defaultServerAddress = "http://127.0.0.1:59410/"; |
27 | 26 |
28 /// Tracks if there has been a crash reported through [reportCrash]. Should be | 27 /// Tracks if there has been a crash reported through [reportCrash]. Should be |
29 /// reset between each compilation by calling [resetCrashReporting]. | 28 /// reset between each compilation by calling [resetCrashReporting]. |
30 bool hasCrashed = false; | 29 bool hasCrashed = false; |
31 | 30 |
32 /// Tracks the first source URI that has been read and is used as a fall-back | 31 /// Tracks the first source URI that has been read and is used as a fall-back |
33 /// for [reportCrash]. Should be reset between each compilation by calling | 32 /// for [reportCrash]. Should be reset between each compilation by calling |
34 /// [resetCrashReporting]. | 33 /// [resetCrashReporting]. |
35 Uri firstSourceUri; | 34 Uri firstSourceUri; |
36 | 35 |
37 /// Used to report an internal error. | 36 /// Used to report an internal error. |
38 /// | 37 /// |
39 /// Internal errors should be avoided as best as possible, but are preferred | 38 /// Internal errors should be avoided as best as possible, but are preferred |
40 /// over assertion failures. Favor error messages that starts with "Internal | 39 /// over assertion failures. Favor error messages that starts with "Internal |
41 /// error: " and a short description that may help a developer debug the issue. | 40 /// error: " and a short description that may help a developer debug the issue. |
42 /// This method should be called instead of using `throw`, as this allows us to | 41 /// This method should be called instead of using `throw`, as this allows us to |
43 /// ensure that there are no throws anywhere in the codebase. | 42 /// ensure that there are no throws anywhere in the codebase. |
44 dynamic internalError(Object error) { | 43 dynamic internalError(Object error, [Uri uri, int charOffset = -1]) { |
45 throw error; | 44 if (uri == null && charOffset == -1) { |
| 45 throw error; |
| 46 } else { |
| 47 throw messages.format( |
| 48 uri, charOffset, "Internal error: ${safeToString(error)}"); |
| 49 } |
46 } | 50 } |
47 | 51 |
48 /// Used to report an error in input. | 52 /// Used to report an error in input. |
49 /// | 53 /// |
50 /// Avoid using this for reporting compile-time errors, instead use | 54 /// Avoid using this for reporting compile-time errors, instead use |
51 /// `LibraryBuilder.addCompileTimeError` for those. | 55 /// `LibraryBuilder.addCompileTimeError` for those. |
52 /// | 56 /// |
53 /// An input error is any error that isn't an internal error. We use the term | 57 /// An input error is any error that isn't an internal error. We use the term |
54 /// "input error" in favor of "user error". This way, if an input error isn't | 58 /// "input error" in favor of "user error". This way, if an input error isn't |
55 /// handled correctly, the user will never see a stack trace that says "user | 59 /// handled correctly, the user will never see a stack trace that says "user |
56 /// error". | 60 /// error". |
57 dynamic inputError(Uri uri, int charOffset, Object error) { | 61 dynamic inputError(Uri uri, int charOffset, Object error) { |
58 throw new InputError(uri, charOffset, error); | 62 throw new InputError(uri, charOffset, error); |
59 } | 63 } |
60 | 64 |
| 65 String colorError(String message) { |
| 66 // TODO(ahe): Colors need to be optional. Doesn't work well in Emacs or on |
| 67 // Windows. |
| 68 return red(message); |
| 69 } |
| 70 |
61 class InputError { | 71 class InputError { |
62 final Uri uri; | 72 final Uri uri; |
63 | 73 |
64 final int charOffset; | 74 final int charOffset; |
65 | 75 |
66 final Object error; | 76 final Object error; |
67 | 77 |
68 InputError(this.uri, int charOffset, this.error) | 78 InputError(this.uri, int charOffset, this.error) |
69 : this.charOffset = charOffset ?? -1; | 79 : this.charOffset = charOffset ?? -1; |
70 | 80 |
71 toString() => "InputError: $error"; | 81 toString() => "InputError: $error"; |
72 | 82 |
73 String format() { | 83 String format() { |
74 // TODO(ahe): Colors need to be optional. Doesn't work well in Emacs or on | 84 return messages.format( |
75 // Windows. | 85 uri, charOffset, colorError("Error: ${safeToString(error)}")); |
76 String message = red("Error: ${safeToString(error)}"); | |
77 if (uri != null) { | |
78 String position = charOffset == -1 ? "" : "$charOffset:"; | |
79 return "${relativizeUri(uri)}:$position $message"; | |
80 } else { | |
81 return message; | |
82 } | |
83 } | 86 } |
84 } | 87 } |
85 | 88 |
86 class Crash { | 89 class Crash { |
87 final Uri uri; | 90 final Uri uri; |
88 | 91 |
89 final int charOffset; | 92 final int charOffset; |
90 | 93 |
91 final Object error; | 94 final Object error; |
92 | 95 |
(...skipping 70 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
163 return new Future.error(error, trace); | 166 return new Future.error(error, trace); |
164 } | 167 } |
165 | 168 |
166 String safeToString(Object object) { | 169 String safeToString(Object object) { |
167 try { | 170 try { |
168 return "$object"; | 171 return "$object"; |
169 } catch (e) { | 172 } catch (e) { |
170 return "Error when converting ${object.runtimeType} to string."; | 173 return "Error when converting ${object.runtimeType} to string."; |
171 } | 174 } |
172 } | 175 } |
OLD | NEW |