| 1 | /* |
|---|---|
| 2 | * Copyright (C) 2007-2010 Júlio Vilmar Gesser. |
| 3 | * Copyright (C) 2011, 2013-2020 The JavaParser Team. |
| 4 | * |
| 5 | * This file is part of JavaParser. |
| 6 | * |
| 7 | * JavaParser can be used either under the terms of |
| 8 | * a) the GNU Lesser General Public License as published by |
| 9 | * the Free Software Foundation, either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * b) the terms of the Apache License |
| 12 | * |
| 13 | * You should have received a copy of both licenses in LICENCE.LGPL and |
| 14 | * LICENCE.APACHE. Please refer to those files for details. |
| 15 | * |
| 16 | * JavaParser is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU Lesser General Public License for more details. |
| 20 | */ |
| 21 | |
| 22 | package com.github.javaparser; |
| 23 | |
| 24 | import java.util.Comparator; |
| 25 | import java.util.Optional; |
| 26 | |
| 27 | import static com.github.javaparser.utils.Utils.SYSTEM_EOL; |
| 28 | import static com.github.javaparser.utils.Utils.assertNotNull; |
| 29 | |
| 30 | /** |
| 31 | * A problem that was encountered during parsing. |
| 32 | */ |
| 33 | public class Problem { |
| 34 | private final String message; |
| 35 | private final TokenRange location; |
| 36 | private final Throwable cause; |
| 37 | |
| 38 | public Problem(String message, TokenRange location, Throwable cause) { |
| 39 | assertNotNull(message); |
| 40 | |
| 41 | this.message = message; |
| 42 | this.location = location; |
| 43 | this.cause = cause; |
| 44 | } |
| 45 | |
| 46 | @Override |
| 47 | public String toString() { |
| 48 | final StringBuilder str = new StringBuilder(getVerboseMessage()); |
| 49 | if (cause != null) { |
| 50 | str.append(SYSTEM_EOL).append("Problem stacktrace : ").append(SYSTEM_EOL); |
| 51 | for (int i = 0; i < cause.getStackTrace().length; i++) { |
| 52 | StackTraceElement ste = cause.getStackTrace()[i]; |
| 53 | str.append(" ").append(ste.toString()); |
| 54 | if (i + 1 != cause.getStackTrace().length) |
| 55 | str.append(SYSTEM_EOL); |
| 56 | } |
| 57 | } |
| 58 | return str.toString(); |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * @return the message that was passed into the constructor. |
| 63 | */ |
| 64 | public String getMessage() { |
| 65 | return message; |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * @return the message plus location information. |
| 70 | */ |
| 71 | public String getVerboseMessage() { |
| 72 | return getLocation().map(l -> l.getBegin().getRange().map(r -> r.begin.toString()).orElse("(line ?,col ?)") + " " + message).orElse(message); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * @return the location that was passed into the constructor. |
| 77 | */ |
| 78 | public Optional<TokenRange> getLocation() { |
| 79 | return Optional.ofNullable(location); |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * @return the cause that was passed into the constructor. |
| 84 | */ |
| 85 | public Optional<Throwable> getCause() { |
| 86 | return Optional.ofNullable(cause); |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Sorts problems on position. |
| 91 | */ |
| 92 | public static Comparator<Problem> PROBLEM_BY_BEGIN_POSITION = (a, b) -> { |
| 93 | final Optional<Position> aBegin= a.getLocation().flatMap(l -> l.getBegin().getRange().map(r -> r.begin)); |
| 94 | final Optional<Position> bBegin = b.getLocation().flatMap(l -> l.getBegin().getRange().map(r -> r.begin)); |
| 95 | |
| 96 | if (aBegin.isPresent() && bBegin.isPresent()) { |
| 97 | return aBegin.get().compareTo(bBegin.get()); |
| 98 | } |
| 99 | if (a.getLocation().isPresent() || b.getLocation().isPresent()) { |
| 100 | if (a.getLocation().isPresent()) { |
| 101 | return 1; |
| 102 | } |
| 103 | return -1; |
| 104 | } |
| 105 | return 0; |
| 106 | }; |
| 107 | |
| 108 | |
| 109 | } |
| 110 |
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